CN116765252B - Sheet metal forming and punching detection tool - Google Patents

Abstract

The invention discloses a sheet metal forming and punching detection tool which comprises a workbench, a punching die, a feeding mechanism and a feeding mechanism, wherein the punching die comprises an upper die plate, a lower die plate, a positioning plate, a first punching device and a second punching device, wherein a guide post and a guide sleeve which are matched with each other are arranged between the upper die plate and the lower die plate, the positioning plate is fixed in the middle of the lower die plate, the first punching device is positioned at the front side of the second punching device, and a positioning hole and a forming hole are formed in the sheet metal part in sequence.

Description

A sheet metal forming punching detection tool

Technical Field

The invention discloses a sheet metal forming punching detection tool and belongs to the technical field of sheet metal production and processing.

Background Art

Sheet metal parts have the characteristics of light weight, high strength, conductivity, low cost, and good mass production performance. They have been widely used in the fields of electronics, communications, automobile industry, medical equipment, etc. For example, sheet metal parts are indispensable components in computer case shells, electronic product shells, and equipment rack shells. During the processing of sheet metal parts, punching is usually performed. Different sheet metal parts have different requirements for the precision of punching. After punching, some sheet metal parts with higher precision requirements need to detect the aperture of the punched hole to determine the quality of the punching of the sheet metal parts. For a sheet metal part shown in Figure 1, in order to detect whether the tolerance of the forming hole 2 meets the requirements, the existing detection method is to use two pins that meet the tolerance requirements, rely on manual operation to pass the two pins with different diameters through the forming hole 2 in turn, and determine whether the forming hole 2 meets the requirements by checking the result that the pin can pass through the forming hole 2. However, the use of this test method not only has low test efficiency, but also has high labor intensity.

Summary of the invention

The purpose of the present invention is to solve the problems in the prior art and to provide a sheet metal forming punching detection tool.

The present invention achieves the above-mentioned purpose through the following technical scheme: a sheet metal forming punching detection tool, including a workbench, a punching die, a feeding mechanism and a feeding mechanism, the punching die includes an upper template, a lower template, a positioning plate, a first punching device and a second punching device, the upper template and the lower template are provided with a guide column and a guide sleeve that cooperate with each other, the positioning plate is fixed to the middle of the lower template, the first punching device is located in front of the second punching device, and the two successively form a positioning hole and a forming hole on the sheet metal part, the upper template is provided with a first detection device and a second detection device on the rear side corresponding to the feeding direction of the second punching device, the first detection device and the second detection device have the same structure, and the two are respectively provided with a first detection axis and a second detection axis, the diameter of the first detection axis The diameter of the second detection axis is equal to the minimum tolerance diameter of the forming hole, the diameter of the second detection axis is greater than the maximum tolerance diameter of the forming hole, the first detection device and the second detection device can output an electrical signal of whether the first detection axis and the second detection axis pass through the forming hole when the upper template and the lower template are molded together, the feeding mechanism includes a guide plate, a conveying roller and a first motor, the guide plate is fixed on the workbench, and one end extends to the side of the positioning plate, the conveying roller is rotatably mounted on the guide plate, the output shaft of the first motor is connected to the conveying roller, the feeding mechanism is installed on the workbench, and can convey the sheet metal on the positioning plate to one side at a certain distance, the punching die is provided with a discharging mechanism on the side away from the feeding mechanism, and the positioning plate is provided with a movable blocking mechanism on the front side of the first punching device.

Preferably, the first punching device includes a first fixed block, a first punching punch, a first spring and a first pressure rod, the first fixed block is fixed on the upper template, the first punching punch and the first pressure rod are installed on the first fixed block, the two ends of the first spring are respectively in contact with the upper template and the first pressure rod, the second punching device includes a second punching punch and a second fixed block, the first detection device and the second detection device also include a third fixed block, an active switch and a second spring, the first detection axis and the second detection axis are installed on the third fixed block, the second spring applies a downward force to the first detection axis and the second detection axis, the active switch connects the circuit and outputs an electrical signal when the first detection axis or the second detection axis cannot pass through the forming hole, the first detection axis and the second detection axis are located on the inner side of the second spring and have a top column for pressing the active switch, and the second punching device, the first detection device and the second detection device are all provided with positioning members that cooperate with the positioning holes.

Preferably, the positioning member includes a third spring and a positioning rod, one end of the positioning rod has a protrusion with the same diameter as the positioning hole, one end of the protrusion has a chamfer, the diameter of the positioning rod close to one end of the protrusion is larger than the diameter of the forming hole, and the third spring applies a downward force to the positioning rod.

Preferably, the active switch includes a pressure piece, a static terminal, a dynamic contact, a fourth spring and a fixed sleeve, the fixed sleeve is fixed to the upper template by bolts, and the fixed sleeve has an installation cavity, one end of the pressure piece is located in the installation cavity, and the other end is located on the outside of the fixed sleeve, two dynamic contacts are provided and are located on the pressure piece, a conductive connecting piece is provided between the two dynamic contacts, two static terminals are provided and are fixed above the corresponding dynamic contacts of the upper template, two ends of the fourth spring respectively contact with the upper template and the pressure piece, and the pressure piece is provided with a protruding column for positioning the fourth spring.

Preferably, the feeding mechanism includes a second motor, a driving disk, a connecting rod, a feeding rod, a base plate, a first guide rail, a second guide rail, a first mounting seat and a horizontal driving member, the second motor and the first guide rail are fixed on the workbench, the driving disk is fixed on the output shaft of the second motor, the two ends of the connecting rod are respectively connected to the driving disk and the base plate, the base plate and the first guide rail are slidably arranged, the second guide rail is fixed on the base plate, the first mounting seat and the second guide rail are slidably arranged, the sliding direction of the base plate is the same as the feeding direction of the sheet metal, the first mounting seat is perpendicular to the sliding direction of the base plate, the first mounting seat, the feeding rod and the horizontal driving member are each provided with two, clamping blocks are arranged at equal intervals on the opposite sides of the two feeding rods, one end of the feeding rod is fixedly connected to the first mounting seat, and the two horizontal driving members drive the two feeding rods to approach or move away from each other.

Preferably, the horizontal driving member includes a guide slide seat, a second mounting seat and a double-rod cylinder, the guide slide seat is fixed on the workbench, two second mounting seats are provided and are slidably arranged with the guide slide seat, the double-rod cylinder is fixedly connected to the two second mounting seats, and the feeding rod is slidably arranged with the second mounting seat.

Preferably, the movable blocking mechanism includes a movable rod, a blocking rod, a fifth spring and a sixth spring. The movable rod is arranged perpendicular to the feeding rod, one end of which is slidably connected to the positioning plate, and the other end contacts the feeding rod. The fifth spring is located at the end of the movable rod away from the feeding rod, and applies a force to the movable rod to contact the feeding rod. Two blocking rods are provided and vertically slidably arranged in the positioning plate. A sink groove is provided on the blocking rod, and one side of the sink groove has an inclined surface that cooperates with the movable rod. The two ends of the sixth spring respectively contact the blocking rod and the lower template.

Preferably, the discharging mechanism includes a discharging plate and a first cylinder, one end of the discharging plate is rotatably connected to the lower template, and the height of the discharging plate is lower than the height of the positioning plate, the cylinder body of the first cylinder is rotatably connected to the workbench, a mounting block and a rotating sleeve are provided in the middle of the discharging plate, the rotating sleeve is rotatably connected to the mounting block, and the piston of the first cylinder is fixedly connected to the rotating sleeve.

Compared with the prior art, the present invention has the following beneficial effects:

By setting a workbench, a punching die, a feeding mechanism and a delivery mechanism, the feeding mechanism automatically transports the sheet metal to the positioning plate, and the feeding mechanism transports the sheet metal in turn at a fixed distance below the first punching device, the second punching device, the first detection device and the second detection device, so that the sheet metal first punches out a positioning hole, and then punches out a forming hole based on the positioning hole, and then tests whether the first detection axis and the second detection axis can pass through the forming hole based on the positioning hole, and outputs an electrical signal of the sheet metal detection result by relying on the connectivity of the active switches in the first detection device and the second detection device, and uses the electrical signal to control the first cylinder to drive the swing of the discharge plate, so as to distinguish qualified sheet metal from waste sheet metal, and the punching and detection of the sheet metal can be continuously and automatically controlled, thereby effectively improving the production and processing efficiency of the sheet metal.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the structure of an example sheet metal part;

FIG2 is a schematic structural diagram of a sheet metal forming punching detection tooling of the present invention;

FIG3 is a schematic structural diagram of a first punching device, a second punching device, a first detection device, and a second detection device in the present invention;

FIG4 is a schematic diagram of the internal structure of the first punching device in the present invention;

FIG5 is a schematic diagram of the internal structure of the second punching device in the present invention;

FIG6 is a schematic diagram of the internal structure of the first detection device in the present invention;

FIG7 is a schematic diagram of the internal structure of the movable switch in the present invention;

FIG8 is a schematic structural diagram of a feeding mechanism in the present invention;

FIG9 is a schematic structural diagram of a movable material blocking mechanism in the present invention;

FIG10 is a schematic structural diagram of a discharging mechanism in the present invention;

FIG11 is a control principle diagram of the first detection device and the second detection device in the present invention;

Figure numerals: 1, sheet metal; 2, forming hole; 3, positioning hole; 4, conveying roller; 5, first motor; 6, guide plate; 7, guide column; 8, upper template; 9, discharge mechanism; 10, guide sleeve; 11, lower template; 12, feeding mechanism; 13, first punching device; 14, second punching device; 15, first detection device; 16, second detection device; 17, first fixing block; 18, first spring; 19, first punching punch; 20, first pressure rod; 21, second punching punch; 22, second fixing block; 23, third spring; 24, positioning rod; 25, protrusion; 26, movable switch; 27, positioning member; 28, second spring; 29, third fixing block; 30, first detection axis; 31, Fixed sleeve; 32. Static terminal; 33. Mounting cavity; 34. Dynamic contact; 35. Boss; 36. Pressing member; 37. Fourth spring; 38. Conductive connecting piece; 39. Driving disk; 40. Linking rod; 41. Second motor; 42. First guide rail; 43. Bottom plate; 44. Second guide rail; 45. First mounting seat; 46. Guide slide seat; 47. Double-rod cylinder; 48. Second mounting seat; 49. Feeding rod; 50. Clamping block; 51. Horizontal driving member; 52. Positioning plate; 53. Movable rod; 54. Sixth spring; 55. Stop rod; 56. Inclined surface; 57. Fifth spring; 58. Discharging plate; 59. First cylinder; 60. Mounting block; 61. Rotating sleeve; 62. Workbench; 63. Top column.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

As shown in Fig. 1 to Fig. 11, a sheet metal forming punching detection tooling includes a workbench 62, a punching die, a feeding mechanism and a feeding mechanism 12. The punching die includes an upper template 8, a lower template 11, a positioning plate 52, a first punching device 13 and a second punching device 14. A guide column 7 and a guide sleeve 10 that cooperate with each other are provided between the upper template 8 and the lower template 11. The positioning plate 52 is fixed to the middle of the lower template 11. The first punching device 13 is located in front of the second punching device 14, and the two successively form a positioning hole 3 and a forming hole 2 on the sheet metal part 1. The upper template 8 has a first detection device 15 and a second detection device 16 on the rear side corresponding to the feeding direction of the second punching device 14. The first detection device 15 and the second detection device 16 have the same structure, and the two are respectively provided with a first detection axis 30 and a second detection axis. The first detection axis 30 The diameter is equal to the minimum tolerance diameter of the forming hole 2, the diameter of the second detection axis is greater than the maximum tolerance diameter of the forming hole 2, the first detection device 15 and the second detection device 16 can output an electrical signal of whether the first detection axis 30 and the second detection axis pass through the forming hole 2 when the upper template 8 and the lower template 11 are molded, the feeding mechanism includes a guide plate 6, a conveying roller 4 and a first motor 5, the guide plate 6 is fixed on the workbench 62, and one end extends to the side of the positioning plate 52, the conveying roller 4 is rotatably installed on the guide plate 6, the output shaft of the first motor 5 is connected to the conveying roller 4, the feeding mechanism 12 is installed on the workbench 62, and can convey the sheet metal 1 on the positioning plate 52 to one side at a certain distance, a discharge mechanism 9 is arranged on the side of the punching die away from the feeding mechanism, and the positioning plate 52 is located on the front side of the first punching device 13 and a movable material blocking mechanism is arranged.

The first punching device 13 includes a first fixed block 17, a first punching punch 19, a first spring 18 and a first pressure rod 20. The first fixed block 17 is fixed on the upper template 8. The first punching punch 19 and the first pressure rod 20 are installed on the first fixed block 17. The two ends of the first spring 18 are respectively in contact with the upper template 8 and the first pressure rod 20. The second punching device 14 includes a second punching punch 21 and a second fixed block 22. The first detection device 15 and the second detection device 16 also include a third fixed block 29, an active switch 26 and a second spring 28. The first detection shaft 30 and the second detection shaft are installed on the third fixed block 29. The second spring 28 applies a downward force to the first detection shaft 30 and the second detection shaft. The active switch 26 connects the circuit and outputs an electrical signal when the first detection shaft 30 or the second detection shaft cannot pass through the forming hole 2. The first detection shaft 30 and the second detection shaft are located on the inner side of the second spring 28 and have a top column 63 for pressing the active switch 26. The second punching device 14, the first detection device 15 and the second detection device 16 are all provided with a fixed The positioning member 27 cooperates with the positioning hole 3, and the positioning member 27 includes a third spring 23 and a positioning rod 24. One end of the positioning rod 24 has a protrusion 25 with the same diameter as the positioning hole 3, and one end of the protrusion 25 has a chamfer. The diameter of the positioning rod 24 near the protrusion 25 is larger than the diameter of the forming hole 2. The third spring 23 applies a downward force to the positioning rod 24. The first punching punch 19 first forms two positioning holes 3 on the sheet metal part 1. When the positioning holes 3 are formed, the first pressing rod 20 first presses the sheet metal part 1, and the first spring 18 and The first pressure rod 20 serves to pre-press the sheet metal part 1 so that the sheet metal part 1 will not move during punching. When punching the forming hole 2, the protrusion 25 on the positioning rod 24 is first inserted into the positioning hole 3, so that the sheet metal part 1 can be positioned, and the positioning rod 24 can pre-press the sheet metal part 1 under the action of the second spring 28. In this way, when punching the forming hole 2, the sheet metal part 1 will not move, and the positioning hole 3 and the forming hole 2 have a definite relative position relationship, thereby facilitating the subsequent detection of the diameter of the forming hole 2.

The movable switch 26 includes a pressing piece 36, a static terminal 32, a dynamic contact 34, a fourth spring 37 and a fixed sleeve 31. The fixed sleeve 31 is fixed to the upper template 8 by bolts, and the fixed sleeve 31 has a mounting cavity 33. One end of the pressing piece 36 is located in the mounting cavity 33, and the other end is located on the outside of the fixed sleeve 31. Two dynamic contacts 34 are provided and are located on the pressing piece 36. A conductive connecting piece 38 is provided between the two dynamic contacts 34. Two static terminals 32 are provided and fixed above the upper template 8 corresponding to the dynamic contacts 34. The two ends of the fourth spring 37 are respectively in contact with the upper template 8 and the pressing piece 36. The pressing piece 36 is provided with a convex column 35 for positioning the fourth spring 37. 2, since the sheet metal 1 will be deformed, the size of the forming hole 2 will be different. Usually, the diameter of the forming hole 2 is detected to be qualified. Since the forming hole 2 generally has a certain tolerance range, the size of the forming hole 2 is qualified within the tolerance range, otherwise it is scrapped. For the convenience of understanding, the standard diameter of the forming hole 2 is taken as 10mm, and the tolerance range is ±0.05mm. In this way, the diameter of the first detection axis 30 is 9.95mm, and the diameter of the second detection axis is 10.06mm. When detecting the forming hole 2, it depends on whether the first detection axis 30 and the second detection axis can pass through the forming hole 2 to control the connectivity of the active switch 26 circuit, thereby outputting an electrical signal to detect whether the diameter of the forming hole 2 meets the requirements.

The specific connection principle of the active switch 26 is as follows: when the first detection shaft 30 and the second detection shaft can both pass through the forming hole 2, it means that the size of the forming hole 2 is ≥10.06mm, that is, the size is unqualified. At this time, the circuits of the active switch 26 at the same position of the first detection device 15 and the second detection device 16 are not connected, so that the first detection shaft 30 and the second detection shaft do not compress the second spring 28, the top column 63 remains stationary, and the circuit of the active switch 26 is in an open state. When the first detection shaft 30 can pass through the forming hole 2, but the second detection shaft cannot pass through the forming hole 2, that is, This means that the size of the forming hole 2 is between 9.95mm and 10.05mm, that is, the size is qualified. At this time, the circuit of the active switch 26 of the first detection device 15 is not connected, and the second detection axis compresses the second spring 28 upward, so that the top column 63 contacts the pressing member 36, and the dynamic contact 34 contacts the static terminal 32. In this way, the circuit of the active switch 26 at the same position of the second detection device 16 is connected. When both the first detection axis 30 and the second detection axis cannot pass through the forming hole 2, it means that the size of the forming hole 2 is ≤9.95mm, that is, the size is unqualified. At this time, the circuits of the active switches 26 at the same position of the first detection device 15 and the second detection device 16 are connected. Therefore, according to the above principle, a control circuit composed of a NOT gate control module and an AND gate control module is used. The input signal of the active switch 26 circuit is 0 when it is not connected, and the input signal is 1 when it is connected. In this way, the situation of the first detection axis 30 and the second detection axis passing through the forming hole 2 can be converted into an electrical signal of the detection result, thereby controlling the activity of the discharging mechanism 9 to distinguish the qualified sheet metal parts 1 from the defective sheet metal parts 1. The specific control principle is shown in Figure 11: the active switch 26 in the first detection device 15 is connected to a NOT gate control module, and the active switch 26 in the second detection device 16 at the same position and the output end of the NOT gate control module are jointly connected to an AND gate control module, and finally the output end of the AND gate control module is electrically connected to the discharging mechanism 9. In addition, in order to ensure the rigidity of the first detection axis 30 and the second detection axis so that they will not bend when detecting the forming hole 2 and affect their detection results, a positioning sleeve is added to the inner side of the third fixed block 29, and the positioning sleeve slides with the first detection axis 30 and the second detection axis so that the two will not swing.

The feeding mechanism 12 includes a second motor 41, a driving disk 39, a connecting rod 40, a feeding rod 49, a bottom plate 43, a first guide rail 42, a second guide rail 44, a first mounting seat 45 and a horizontal driving member 51. The second motor 41 and the first guide rail 42 are fixed on the workbench 62, the driving disk 39 is fixed on the output shaft of the second motor 41, and the two ends of the connecting rod 40 are respectively connected to the driving disk 39 and the bottom plate 43, the bottom plate 43 is slidably arranged with the first guide rail 42, the second guide rail 44 is fixed on the bottom plate 43, the first mounting seat 45 is slidably arranged with the second guide rail 44, the sliding direction of the bottom plate 43 is the same as the feeding direction of the sheet metal part 1, the first mounting seat 45 is perpendicular to the sliding direction of the bottom plate 43, and the first mounting seat 45, the feeding rod 49 and the horizontal driving member 51 are each provided with two. Clamping blocks 50 are arranged at equal intervals on the opposite side of the two feeding rods 49, one end of the feeding rod 49 is fixedly connected to the first mounting seat 45, and two horizontal driving members 51 drive the two feeding rods 49 to move closer to or away from each other. When the second motor 41 drives the driving disk 39 to rotate, the connecting rod 40 is installed in the eccentric position of the driving disk 39. When one end of the connecting rod 40 rotates with the second motor 41, the other end of the connecting rod 40 can drive the bottom plate 43 to slide along the first guide rail 42, so that the feeding rod 49 moves a certain distance along the feeding direction of the sheet metal 1. The horizontal driving member 51 supports the two ends of the feeding rod 49, and the second motor 41 can drive the two feeding rods 49 to move back and forth along the feeding direction of the sheet metal 1, thereby providing power for the feeding of the sheet metal 1.

The horizontal driving member 51 includes a guide slide seat 46, a second mounting seat 48 and a double-rod cylinder 47. The guide slide seat 46 is fixed on the workbench 62. Two second mounting seats 48 are provided and are slidably arranged with the guide slide seat 46. The double-rod cylinder 47 is fixedly connected to the two second mounting seats 48. The feeding rod 49 is slidably arranged with the second mounting seat 48. The same double-rod cylinder 47 can drive the two second mounting seats 48 to move away from or closer to each other along the guide slide seat 46, so that the two feeding rods 49 move synchronously. In this way, the clamping block 50 on the feeding rod 49 can clamp the sheet metal part 1, thereby preparing for the feeding of the sheet metal part 1.

The movable blocking mechanism includes a movable rod 53, a blocking rod 55, a fifth spring 57 and a sixth spring 54. The movable rod 53 is arranged perpendicular to the feeding rod 49, one end of which is slidably connected to the positioning plate 52, and the other end contacts the feeding rod 49. The fifth spring 57 is located at the end of the movable rod 53 away from the feeding rod 49, and applies a force to the movable rod 53 to contact the feeding rod 49. Two blocking rods 55 are provided and vertically slidably arranged in the positioning plate 52. A sink groove is provided on the blocking rod 55, and one side of the sink groove has an inclined surface 56 that cooperates with the movable rod 53. The two ends of the sixth spring 54 contact the blocking rod 55 and the lower template 11 respectively. When the distance between the two feeding rods 49 is at the maximum, the two blocking rods 55 are in the first Under the action of six springs 54, they protrude from the surface of the positioning plate 52, and the two baffles 55 are arranged side by side, so that when the first motor 5 drives the conveying roller 4 to convey the sheet metal part 1, the baffle 55 can position the sheet metal part 1, so that when the clamping block 50 on the feeding rod 49 clamps the sheet metal part 1, the side of the feeding rod 49 pushes the movable rod 53 to move toward the inner side of the positioning plate 52. In this way, the baffle 55 can be driven by the inclined surface 56 to retract into the positioning plate 52, so that after the clamping block 50 clamps the sheet metal part 1, the baffle 55 remains stationary, and then the second motor 41 drives the connecting rod 40 and the bottom plate 43 to move, so that the feeding rod 49 drives the sheet metal part 1 to move backward by the same distance, and the positions of each side edge can be aligned.

The discharging mechanism 9 includes a discharging plate 58 and a first cylinder 59. One end of the discharging plate 58 is rotatably connected to the lower template 11, and the height of the discharging plate 58 is lower than the height of the positioning plate 52. The cylinder body of the first cylinder 59 is rotatably connected to the workbench 62. A mounting block 60 and a rotating sleeve 61 are provided in the middle of the discharging plate 58. The rotating sleeve 61 is rotatably connected to the mounting block 60. The piston of the first cylinder 59 is fixedly connected to the rotating sleeve 61. The first cylinder 59 is electrically connected to the final output end of the door control module, so as to control the first cylinder 59 to drive the discharging plate 58 to swing around one end. By changing the inclination angle of the discharging plate 58, the blanking position of the sheet metal part 1 is changed. Two different receiving boxes can be used to distinguish qualified sheet metal parts 1 and defective sheet metal parts 1. The control is simple and the operation is convenient.

Working principle: put the sheet metal part 1 on the guide plate 6, and rely on the first motor 5 to drive the conveying roller 4 to rotate, so that the sheet metal part 1 moves to the positioning plate 52, and the stop rod 55 positions one side of the sheet metal part 1, and then the second motor 41 drives the driving disk 39 to rotate, so that the linkage rod 40 drives the bottom plate 43 and the feeding rod 49 to move a distance to one side, so that the clamping blocks 50 on the two feeding rods 49 are aligned with the sheet metal part 1, and then the double-rod cylinder 47 drives the two second mounting seats 48 to approach each other and clamp the sheet metal part 1. At the same time, the movable rod 53 retracts the stop rod 55 to the positioning plate 52 under the pressure of the feeding rod 49. When the first motor 5 drives the feeding rod 49 to move, the clamping block 5 0 drives the sheet metal part 1 to move without being blocked by the stop rod 55, and moves the sheet metal part 1 to the next station. Under the clamping and conveying of the feeding rod 49, multiple sheet metal parts 1 pass through the first punching device 13, the second punching device 14, the first detection device 15 and the second detection device 16 in sequence, so that the sheet metal part 1 first punches out the positioning hole 3, and then punches out the forming hole 2 based on the positioning hole 3, and then measures the diameter of the forming hole 2 based on the positioning hole 3 using the first detection axis 30 and the second detection axis, so as to determine whether the diameter of the forming hole 2 meets the tolerance requirements, and output an electrical signal to control the action of the first cylinder 59, so as to distinguish between qualified sheet metal parts 1 and defective sheet metal parts 1.

It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims (7)

1. The utility model provides a sheet metal forming and punching detection tool, includes workstation (62), cut-out press, feed mechanism and feeding mechanism (12), its characterized in that, cut-out press includes cope match-plate pattern (8), lower bolster (11), locating plate (52), first punching device (13) and second punching device (14), have guide pillar (7) and guide pin bushing (10) of mutually supporting between cope match-plate pattern (8) and lower bolster (11), locating plate (52) are fixed at the middle part of lower bolster (11), first punching device (13) are located the front side of second punching device (14), and both sequentially form locating hole (3) and shaping hole (2) on sheet metal component (1), The upper die plate (8) is provided with a first detection device (15) and a second detection device (16) corresponding to the rear side of the second punching device (14) in the feeding direction, the first detection device (15) and the second detection device (16) are identical in structure, a first detection shaft (30) and a second detection shaft are respectively arranged, the diameter of the first detection shaft (30) is equal to the minimum tolerance diameter of the forming hole (2), the diameter of the second detection shaft is larger than the maximum tolerance diameter of the forming hole (2), the first detection device (15) and the second detection device (16) can output an electric signal whether the first detection shaft (30) and the second detection shaft pass through the forming hole (2) or not when the upper die plate (8) and the lower die plate (11) are clamped, The feeding mechanism comprises a material guide plate (6), a conveying roller (4) and a first motor (5), wherein the material guide plate (6) is fixed on a workbench (62), one end of the material guide plate extends to the side face of a positioning plate (52), the conveying roller (4) is rotatably installed on the material guide plate (6), an output shaft of the first motor (5) is connected with the conveying roller (4), the feeding mechanism (12) is installed on the workbench (62) and can convey a sheet metal part (1) on the positioning plate (52) to one side according to a certain distance, a discharging mechanism (9) is arranged on one side, away from the feeding mechanism, of the punching die, the positioning plate (52) is located on the front side of a first punching device (13), the first punching device (13) comprises a first fixed block (17), The first punching male die (19), the first spring (18) and the first pressing rod (20), the first fixing block (17) is fixed on the upper die plate (8), the first punching male die (19) and the first pressing rod (20) are arranged on the first fixing block (17), two ends of the first spring (18) are respectively abutted against the upper die plate (8) and the first pressing rod (20), the second punching device (14) comprises a second punching male die (21) and a second fixing block (22), the first detection device (15) and the second detection device (16) further comprise a third fixing block (29), a movable switch (26) and a second spring (28), the second spring (28) applies downward acting force to the first detection shaft (30) and the second detection shaft, the movable switch (26) is connected with a circuit and outputs an electric signal when the first detection shaft (30) or the second detection shaft cannot pass through the forming hole (2), the inner sides of the first detection shaft (30) and the second detection shaft, which are positioned on the second spring (28), are provided with a jacking column (63) for propping against the movable switch (26), and the second punching device (14), the first detection device (15) and the second detection device (16) are respectively provided with a positioning piece (27) matched with the positioning hole (3).

2. The sheet metal forming and punching detection tool according to claim 1, wherein the positioning piece (27) comprises a third spring (23) and a positioning rod (24), one end of the positioning rod (24) is provided with a protruding portion (25) with the same diameter as the positioning hole (3), one end of the protruding portion (25) is provided with a chamfer, the diameter of one end, close to the protruding portion (25), of the positioning rod (24) is larger than the diameter of the forming hole (2), and the third spring (23) applies downward acting force to the positioning rod (24).

3. The sheet metal forming and punching detection tool according to claim 1, wherein the movable switch (26) comprises a pressing part (36), a static binding post (32), a dynamic contact (34), a fourth spring (37) and a fixed sleeve (31), the fixed sleeve (31) is fixed on the upper die plate (8) through bolts, the fixed sleeve (31) is provided with a mounting cavity (33), one end of the pressing part (36) is located in the mounting cavity (33), the other end of the pressing part is located on the outer side of the fixed sleeve (31), the dynamic contact (34) is provided with two, and is located on the pressing part (36), a conductive connecting sheet (38) is arranged between the two dynamic contact (34), the static binding post (32) is provided with two, and is fixed above the upper die plate (8) corresponding to the dynamic contact (34), two ends of the fourth spring (37) are respectively abutted against the upper die plate (8) and the pressing part (36), and a convex column (35) for positioning the fourth spring (37) is arranged on the pressing part (36).

4. The sheet metal forming and punching detection tool according to claim 2, wherein the feeding mechanism (12) comprises a second motor (41), a driving disc (39), a linkage rod (40), a feeding rod (49), a bottom plate (43), a first guide rail (42), a second guide rail (44), a first mounting seat (45) and a horizontal driving piece (51), the second motor (41) and the first guide rail (42) are fixed on a workbench (62), the driving disc (39) is fixed on an output shaft of the second motor (41), two ends of the linkage rod (40) are respectively connected with the driving disc (39) and the bottom plate (43), the bottom plate (43) and the first guide rail (42) are arranged in a sliding mode, the second guide rail (44) is fixed on the bottom plate (43), the first mounting seat (45) and the second guide rail (44) are arranged in a sliding mode, the sliding direction of the bottom plate (43) is the same as that of a sheet metal piece (1), the first mounting seat (45) and the sliding direction of the bottom plate (43) are perpendicular to the sliding direction of the bottom plate (43), the first mounting seat (45) and the two opposite feeding blocks (49) are arranged on two sides of the feeding rod (49) and the driving piece (50) in a sliding mode, one end of each feeding rod (49) is fixedly connected with the first mounting seat (45), and the two horizontal driving pieces (51) drive the two feeding rods (49) to be close to each other or far away from each other.

5. The sheet metal forming and punching detection tool according to claim 4, wherein the horizontal driving piece (51) comprises a guide sliding seat (46), a second mounting seat (48) and a double-rod air cylinder (47), the guide sliding seat (46) is fixed on a workbench (62), two second mounting seats (48) are arranged and slidably arranged with the guide sliding seat (46), the double-rod air cylinder (47) is fixedly connected with the two second mounting seats (48), and the feeding rod (49) is slidably arranged with the second mounting seats (48).

6. The sheet metal forming and punching detection tool according to claim 4, wherein the movable stop mechanism comprises a movable rod (53), a stop rod (55), a fifth spring (57) and a sixth spring (54), the movable rod (53) is perpendicular to the feeding rod (49), one end of the movable rod is in sliding connection with the positioning plate (52), the other end of the movable rod is in abutting contact with the feeding rod (49), the fifth spring (57) is located at one end, far away from the feeding rod (49), of the movable rod (53) and applies acting force for abutting against the feeding rod (49), the stop rod (55) is provided with two stop rods and vertically and slidably arranged in the positioning plate (52), a sinking groove is formed in the stop rod (55), an inclined surface (56) matched with the movable rod (53) is formed in one side of the sinking groove, and two ends of the sixth spring (54) are in abutting contact with the stop rod (55) and the lower die plate (11) respectively.

7. The sheet metal forming and punching detection tool according to claim 1, wherein the discharging mechanism (9) comprises a discharging plate (58) and a first cylinder (59), one end of the discharging plate (58) is rotationally connected with the lower die plate (11), the height of the discharging plate (58) is lower than that of the positioning plate (52), a cylinder body of the first cylinder (59) is rotationally connected with the workbench (62), an installation block (60) and a rotating sleeve (61) are arranged in the middle of the discharging plate (58), the rotating sleeve (61) is rotationally connected with the installation block (60), and a piston of the first cylinder (59) is fixedly connected with the rotating sleeve (61).