JP2003164932A - Work stocking device and work aligning and loading device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a work stocking device capable of supplying a work fed from a press machine to a downstream line in a superimposed alignment state without stopping driving of the press machine. provide. SOLUTION: A first stock unit 5 for stocking unreeling workpieces from a press machine 1 in a superposed alignment state,
A second stock unit 6 for temporarily stocking a subsequent work when the work is discharged from the first stock unit, and discharging the stock work after discharging the work from the first stock unit to the first stock unit; Work holding means 7 and 8 in which the first and second stock portions 5 and 6 are switched between a posture A for holding the work and a posture B for allowing the passage of the work, respectively. A posture switching mechanism for switching to the holding posture.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work stocking device for stocking works fed from a press in a state of overlapping alignment and supplying a predetermined number of stocked works to a downstream line. The present invention relates to a work aligning and loading device for loading work in a stacked and aligned state onto a pallet, which is equipped with this stock device.

[0002]

2. Description of the Related Art FIG. 1 shows an apparatus for aligning and loading workpieces.
As shown in FIG. 3, the lower window 82 of the press 81
3 and the vacant chamber portion 84 are formed, and a receiving member 86 that sequentially receives and stacks a plurality of products (workpieces) 85 that fall from the dropping window portion 83 after pressing is provided inside the vacant chamber portion 84. A unloading means 87 for intermittently unloading the stacked products 85 is provided, and this is used as a pressing die 88, a belt conveyor 90 is arranged between the die 88 and the bullet 89, and the product is transferred by the conveyor 90. There is a product 85 in which the worker 85 stores the product 85 in the bullet 89.

[0003]

In this work aligning and loading apparatus, when the unloading means 87 unloads the stacked products 85 onto the conveyor 90, the subsequent products 85 falling through the drop window 83 are unloading means 87. It is necessary to complete the reciprocating movement of the carry-out means 87 by the time the subsequent product 85 falls, in order to prevent the product 85 from getting on.

Here, setting the press-molding time of the product 85 in accordance with the time required for the reciprocating movement of the carry-out means 87 leads to a drastic decrease in productivity. When the stacked products 85 are unloaded, the unloading means 87 is used for continuous press molding.
Takes the form of control for stopping the drive of the press machine 81 until the reciprocating movement is completed.

However, even if the driving of the press 81 is temporarily stopped, it still leads to a decrease in productivity, and a complicated control means for that is required. There was a problem. In addition to this, there is a problem in that the worker 91 has a great labor burden when the stacked products 85 are stored in the bullet 89.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a line on the downstream side in a state in which a predetermined number of works are superposed and aligned without stopping the driving of the press machine. To provide a work stocking device capable of supplying the work pieces to the pallet, and a work aligning and loading device equipped with the stocking device so that the works can be automatically and orderly loaded onto the pallet without requiring manual labor. In point.

[0007]

In order to achieve the above-mentioned object, the present invention provides a stock device for works, which stocks works fed out from a press machine in an aligned state of stacking, and stocks a predetermined stock. It is configured to supply a certain number of works to the downstream line.

[0008] Specifically, the first stock section for stocking the pay-out work pieces in an aligned state and the subsequent work piece temporarily stocked when the work pieces are discharged from the first stock section, and the first stock section And a second stock part that discharges the stocked work after discharging the work from the first stock part. The first and second stock parts have a posture for holding the work and a posture for allowing the work to pass, respectively. It is characterized in that it is provided with a work holding means that can be switched and a posture switching mechanism for switching the work holding means to a work holding posture in a contradictory manner (claim 1).

According to the stock device having such a structure,
When the work holding means of the stock portion is in the work holding posture and the work holding means of the second stock portion is in the work passage permitting posture, and when the work is continuously fed from the press machine, the work moves to the second stock portion. After passing, they are sequentially held by the work holding means of the first stock section, and are stocked in the first stock section in an aligned state.

When a predetermined number of works are stocked, the work holding means of the first stock section is switched to the work passing attitude and the work holding means of the second stock section is switched to the work holding attitude. The workpieces stocked in the stock section are supplied to the downstream line in an aligned state of superposition, and for the subsequent workpieces fed from the press machine, this is temporarily held by the workpiece holding means of the second stock section. Will be stocked in.

Next, when the discharge of the work from the first stock portion is completed, the work holding means of the first stock portion is switched to the work holding posture and the work holding means of the second stock portion is switched to the work passing posture. Then, the work temporarily stocked in the second stock section is discharged to the first stock section. After that, by repeating this cycle, a predetermined number of works can be performed without stopping the drive of the press machine. The work pieces are supplied to the line on the downstream side in an aligned state of superposition.

Therefore, according to the work stock device of the present invention, since it is not necessary to stop the driving of the press machine,
Since productivity can be increased, and in addition to this, since control means for temporarily stopping the driving of the press machine is not required, cost reduction of the press-formed product (workpiece) can be expected. it can.

A work aligning and loading apparatus according to the present invention comprises a work stocking apparatus configured as described above, a robot for loading work in a stacked and aligned state on a pallet, and a stacking and aligning apparatus from the stocking apparatus. It is characterized in that it is provided with a line for transporting the workpiece in the state to the workpiece taking-in portion of the robot (claim 3).

According to the above construction, the works fed out from the press are sequentially stocked in the stocking device in the state of being superposed and fed to the downstream line, and the works are taken in by the robot. When the robot is loaded onto the pallets all at once, the robots are transported to the site, and the aligned workpieces are loaded all at once. The loading operation is repeated.

As a result, the workpieces in the stacked and aligned state are loaded neatly on the pallet without any artificial labor, and the noise when loading the workpieces becomes extremely small, and the work environment is reduced. Is improved. Further, since the works are housed in the pallets in an orderly manner, the amount of the works accommodated in the pallets is dramatically increased.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show the overall configuration of a work aligning and loading apparatus.
A stocking device for stocking the unrolled workpieces in an aligned state, a robot for loading the aligned workpieces on a pallet, and a work transfer means for transporting the stocked workpieces to the robot workpiece intake site in the aligned state. A press-formed product (hereinafter, referred to as a work) a pressed by a mold equipped in the press machine 1, for example, is neatly arranged in an overlapping alignment state. It is configured to be loaded into.

In FIG. 3, reference numeral 3 in the drawing denotes a stock device for the work fed out from the mold. The stock device 3 is provided on the mold side so that the stock device 3 can be exchanged together with the mold in a well-prepared manner. I have to.

As shown in FIGS. 4 and 5, the stocking device 3 comprises two stockers 4 and 4 for stocking symmetrically shaped works a separately, and each stocker 4 has a first stocker 1 and a second stocker 4, respectively. Two stock parts 5 and 6 are provided.

The first stocking section 5 is constructed so as to receive the work a taken out from the mold from above and stock the work a in a superposed and aligned state. When a predetermined number of workpieces a are discharged from the 1st stock section 5, the succeeding workpiece a is temporarily stocked, and after the workpiece a is discharged from the 1st stock section 5, the temporarily stocked work a is moved downward. It is configured to be discharged to the first stock portion 5 of.

More specifically, the first and second stock portions 5 and 6 are provided with work holding means 7 and 8 for receiving and holding four points on both sides of the work a in the longitudinal direction and accommodating a predetermined number of works a. The stocker 3 is swingably provided on the frame 10 of the stock device 3 through the support shaft 9 whose axis is oriented in the longitudinal direction of the work a.
A posture switching mechanism 11 for the work holding means 7 and 8 is provided in the.

The posture switching mechanism 11 is provided with a lifter 12 capable of moving up and down on the frame 10 over the upper and lower work holding means 8 and 7, and each lifter 12 is provided.
The upper and lower parts are provided with posture switching operation members 13 and 14, and the operation member 13 on the upper side is configured to allow the work a to pass therewith as the lifter 12 is lifted (see FIG. 4) B. The work holding means 8 at
The operation member 14 on the lower side holds the work a in a position (see FIG. 4) A for holding the work a as the lifter 12 is lifted. The means 7 is switched to the posture B (see FIG. 5) that allows the work a to pass therethrough. In summary, the posture switching mechanism 11 moves up and down in the first and second stock portions 5 and 6. The work holding means 8 and 7 are configured to be switched to the work holding posture A in a contradictory manner.

Returning to FIGS. 1 and 3, reference numerals 15 and 15 in FIG.
Is a robot configured to separately load left and right symmetrically-shaped works a in an aligned state on the pallets 2 and 2, in which a frame 17 is mounted on a fixed base 16 so as to be rotatable about a vertical axis. The boom 18, the arm 19, and the swing frame 20 are pivotally attached to the swing frame 17 in such a manner that they can swing around the horizontal axis, and the swing frame 20 is in an overlapping alignment state. Robot hand 2 for carrying work a
It is equipped with 1.

As shown in FIGS. 6 and 7, the robot hand 21 described above is provided with a member 22 connected to the swing frame 20.
, Four cylinders 24 are provided via a slide mechanism 23 in the horizontal two-dimensional direction, and a cylindrical member 25 is hung on each of the cylinders 24, while a transfer hook 26 for the work a is attached to the lower end portion of the cylindrical member 25. A shaft 27 that is pivotally attached to and is pushed down by a cylinder 24 is inserted into the tubular member 25, the shaft 27 and the hook 26 are connected by a link 28, and a spring 29 for lifting the hook is further provided. With a receiving posture E of the work a
So that the transfer hook 26 of the work a that can be switched between the supply position F and the supply posture F can be made to correspond to the size of the work a.
The work a is configured to be movable in the longitudinal direction and the width direction.

Returning to FIG. 1 to FIG. 3, reference numeral 31 in the drawings denotes a work transfer means (downstream side of the stock device 3) arranged over the stock device 3 and a range farther than the site C where the robot 15 takes in the work a. Of the endless toothed belt 35 to the pair of toothed pulleys 33 and 34 provided with the drive means 32, which is controlled to rotate forward and backward, on one side.
The carriage 36 is attached to the toothed belt 35 in a state where the carriage 36 is wound around and is overhung to a lower portion of the stock device 3.

As shown in FIGS. 8 to 10, the carriage 36 is reciprocally moved along a plate-like rail 37 arranged between the upper and lower belts of the endless toothed belt 35. In the portion that overhangs the lower portion of 3, the storage jigs 38A and 38A for the work a discharged from the first stock portion 5 of the two stockers 4 and 4 are provided.
B, lifter pushing-up means 40 for pushing up the lifter 12 of the posture switching mechanism 11 via the intermediate pushing-up mechanism 39 provided in each of the work holding jigs 38A, 38B, and one work holding jig 38A. And a reciprocating moving means 41 for reciprocating the other work accommodating jig 38B.

The work a housing jigs 38A and 38B are formed by raising the lateral displacement prevention members 43 of the work a at the four corners of the base 42 for receiving the work a. One work housing jig 38A is mounted on the carriage 36. The work is placed on the horizontal base 44, and the other work accommodating jig 38B is provided so as to be movable in the reciprocating direction of the carriage 36 along the horizontal base 44, and the work having a different shape when the die is replaced. In consideration of the necessity of accommodating a, each of the work accommodating jigs 38A and 38B is configured to be easily removable from the carriage 36.

The reciprocating means 41 of the other work accommodating jig 38B comprises a pair of rails 45, 45 on a horizontal base 44.
The slide base 47 is provided on the sliders 46, 46 movable along the rails 45, 45, and the cylinder 48 is connected to the slide base 47. By separating the tool 38B from one work accommodating jig 38A and forming a space G between the work accommodating jigs 32A and 32B,
The work a can be taken in without causing the robot hands 21 and 21 of the single robots 15 and 15 to interfere with each other.

The intermediate push-up mechanism 39 of the lifter 12 is
A lifter push-up rod 51 is provided on the base 42 so as to be able to move up and down in a state where the lifter 12 is raised relative to the lower end of the lifter 12.
And a spring 54 for urging the elevating rod 51 downwardly is provided between the receiving seat 52 and the rod holding member 53 on the upper side. With the lifting rod 51 of the mechanism 39 facing relative to the rod pushing member 55,
Is provided on the frame 56, and an air cylinder 57 for raising and lowering the frame 56 is provided on the fixed base member 1a on the press machine 1 side.

In the work aligning and loading apparatus having the above-mentioned configuration, the attitude switching mechanism 11 switches the work holding means 7 and 8 between the antithetical attitudes A and B via the lifter thrusting means 40 and the intermediate thrusting mechanism 39. Movement, that is, a predetermined number of workpieces a from the first stock section 5
Discharge operation and the work storage jig 3 by the carriage 36
8A and 38B, reciprocating movement operation of the other work accommodating jig 38B while the carriage 36 is moving to the robot 15 side, operation of approach movement opposite thereto, and work by the robot 15. The loading operation of the a into the pallet 2 and the returning operation of the robot 15 to the home position are all controlled by a program, for example.

That is, as shown in FIG. 4, the works a taken out from the mold are sequentially received by the work holding means 7 of the first stock section 5 through the space between the work holding means 8 of the second stock section 6. Then, when a predetermined number of the works a are stocked in the first stock portion 5 in an aligned state of being superposed, the lifter pushing-up means 40 here causes the lifter 12 of the posture switching mechanism 11 via the intermediate pushing-up mechanism 39.
5 to switch the work holding means 7 of the first stock portion 5 to the passage allowance posture B of the work a and the work holding means 8 of the second stock portion 6 to the work holding posture A as shown in FIG. .

By switching between the postures A and B, the first
The predetermined number of workpieces a stocked in the stock section 5 are discharged to the workpiece accommodating jigs 38A and 38B in an aligned state of superposition, and the work holding means 8 of the second stock section 6 is provided with the following workpieces. The work a will be temporarily stocked.

Then, the work a from the first stock section 5
When the discharge of the lifter 12 is completed, the lifting of the lifter 12 by the lifter lifting means 40 is released, the work holding means 7 of the first stock portion 5 is in the work holding posture A, and the work holding means of the second stock portion 6 is Since the work 8 is switched to the passage permitting posture B of the work a, the work a temporarily stocked in the work holding means 8 of the second stock unit 6 is discharged to the first stock unit 5. The above operation is repeated every time a predetermined number of works a are stocked in the first stock section 5.

On the other hand, the jigs 38A and 38B accommodating a predetermined number of works a in a stacked and aligned state are integrated with the carriage 36 provided in the work transfer means 31, and the robot 15 takes in the part a of the work a. During the forward movement, the other workpiece storage jig 3
8B moves in a direction away from one workpiece housing jig 38A.

Then, the carriage 3 to the capturing site C
When the forward movement of 6 is completed, the two robots 15, 15
Picks up the works a having a symmetrical shape and loads them separately on the pallets 2 and 2.

That is, the turning of the frame 17 and the boom 18
And by the swinging motion of the arm 19 and the frame 20,
The robot hand 21 moves from the home position to the work-acquiring site C, where the robot hand 21 descends, and the hook 26 in the posture F switches to the workpiece receiving posture E.
1 and 21 respectively take in the works a and a having a symmetrical shape.

Then, the robot hand 21 is lifted and swung to the position above the pallet 2, and the robot hand 21 descends into the pallet 2, where the hook 26 is in the loading posture of the work a on the pallet 2. The work a, which has been switched to F and is in an overlapping alignment state,
The pallets 2 are loaded at predetermined positions, and after that, the robots 15 are returned to their home positions.

During the loading operation of the works a, the carriage 36 returns to the original position and
During this return movement, the other work accommodating jig 38B approaches the one work accommodating jig 38A, and the above operation is repeatedly performed by the program control, so that the pallet 2 is overlaid. Work a in the aligned state
Will be loaded neatly.

In the above embodiment, the carriage 36 is provided with the reciprocating means 41 so that the robot hands 21 and 21 of the two robots 15 and 15 do not interfere with each other at the loading portion C of the work a. a, a
Although the space G is formed between them, the work a
Are identical in shape, it is possible to change the configuration of the robot hand 21 and take in two sets of aligned workpieces a at once by one robot 15.
The provision of the reciprocating means 41 is not an essential requirement.

Further, the stock device 3 is provided with the two stockers 4 and 4, but it goes without saying that the stocker 3 can be implemented with a configuration of the series stocker 4.

Returning to FIGS. 1 to 3, reference numerals 61 and 61 in FIG.
Is a loading means for loading the workpieces a on the pallet 2A in a bulky manner, and is constituted by arranging a pair of belt conveyors 62, 62 on both sides of the workpiece transfer means 31. As shown in FIG. 11, support mechanisms 64 and 64 having support shafts 63 and 63 are provided on the stock device 3 side of the work transfer means 31, and a conveyor frame 65 is provided.
While swingably supporting the support shaft 63 around the support shaft 63, a pantograph type elevating and lowering support mechanism 66, for example, is arranged at a portion of the work transfer means 31 opposite to the stock device 3 to transfer the belt conveyors 62, 62. The terminal end side is configured to be moved up and down, and a chute 67 for connecting the work a to the pallet 2A is provided on the conveying terminal end side in a continuous manner with the conveyors 62, 62.

In the loading means 61 having the above-described structure, for example, when a trouble occurs in the robot 15, the work transfer means 31, etc., the elevating and lowering support mechanism 66 lifts the transfer end side of the conveyors 62, 62 to move the conveyor 62. , 62 are docked on the chute 67, the stock device 3 is removed, and the works a taken out from the mold are artificially stacked on the conveyors 62, 62, and the works a are dropped on the pallet 2A. The loading means 61 has a loading form of bulk loading, and the loading means 61 includes the robot 15 and the work transfer means 3.
This is a so-called backup means for troubles such as 1, and even with the loading means 61, it is not essential to equip the aligning and loading apparatus according to the present invention with this.

In the above embodiment, the work holding means 7 and 8 of the first and second stock portions 5 and 6 have a pawl structure which rotates around the support shaft 9. It is also possible to use the above-mentioned core as a work holding means 7 and 8 in which stoppers are connected in series, and the stoppers can be configured to be switchable between a passage-permitting attitude of the work a and a work holding attitude. is there.

Further, the work holding means 7 and 8 are constituted by electromagnets, and a current is applied to the electromagnets so that the work a is suspended in a work holding posture, and a current is applied to the electromagnets. The state in which the application is cut off can be carried out as the passage allowable posture of the work a.

Next, a stock device 3 for a work a according to another embodiment will be described with reference to FIG.
The stock device 3 for this work a is the same as the stock device 3 shown in FIGS. 4 and 5 in that it constitutes the first and second stock parts 5 and 6, but the stock device 3 constitutes this stock device 3. , A seesaw member 71 is arranged on both sides of the stock space H of the work a so as to be swingable around a horizontal support shaft 74, and at the upper and lower parts of the seesaw member 71,
Work holding means 7 and 8 that selectively enter the stock space H of the work a as the seesaw member 71 swings are provided, and the work holding means 7 on the lower side that selectively enters the stock space H. And the work holding means 8 on the upper side,
The first and second stock parts 5 and 6 are configured.

In this stocking device 3, for example, a solenoid valve is used as a posture switching mechanism (not shown) to swing the seesaw members 71, 71 to hold the work of the first and second stocking parts 5, 6. The means 7 and 8 are configured to be switched to a posture A for holding the work a and a posture B for allowing the work a to pass therethrough, as shown in FIG.
In the figure, reference numeral 73 in the drawing is a work guide.

[0046]

As described above, according to the present invention, it is possible to supply a predetermined number of works to the downstream line in a superposed and aligned state without stopping the driving of the press machine. Provided are a stocking device and an aligning and loading device for works which can be loaded into a pallet in an orderly and automatic manner without the need for manpower.

[Brief description of drawings]

FIG. 1 is a layout view of an entire work line alignment and loading facility.

FIG. 2 is a plan view of a work aligning and loading device.

FIG. 3 is a side view of a work aligning and loading device.

FIG. 4 is an explanatory diagram showing a state where a work is accommodated in a first stock section.

FIG. 5 is an explanatory view showing a discharge state of a work from the first stock section and a temporary stock state of a succeeding work by the second stock section.

FIG. 6 is a front view of the robot hand.

FIG. 7 is a side view of the robot hand.

FIG. 8 is a configuration diagram of a stock device, a work accommodating jig, and a carriage.

FIG. 9 is a configuration diagram of an intermediate push-up mechanism and lifter push-up means.

FIG. 10 is a plan view of a work storage jig.

FIG. 11 is an end view of the alignment loader.

FIG. 12 is a configuration diagram of a stock device and a work transfer means according to another embodiment.

FIG. 13 is a configuration diagram showing a conventional work aligning and loading device.

[Explanation of symbols]

1 ... Press machine, 2 ... Pallet, 5 ... 1st stock part, 6
... second stock section, 7,8 ... work holding means, 11 ... posture switching mechanism, 12 ... lifter, 13,14 ... operation member, 15 ... robot, 31 ... transport line, a ... work,
A ... Work holding posture, B ... Work passing allowable posture.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hiroharu Kato             Shinmeiko, 3-20 Kinugahara, Toyota City, Aichi Prefecture             Business (72) Inventor Keiji Shibata             1 Toyota Town, Toyota City, Aichi Prefecture Toyota Auto             Car Co., Ltd. (72) Inventor Tsutomu Ono             1 Toyota Town, Toyota City, Aichi Prefecture Toyota Auto             Car Co., Ltd. (72) Inventor Masaki Takeuchi             1 Toyota Town, Toyota City, Aichi Prefecture Toyota Auto             Car Co., Ltd. (72) Inventor Kazuhiro Totsuka             1 Toyota Town, Toyota City, Aichi Prefecture Toyota Auto             Car Co., Ltd. F-term (reference) 3F030 AB02 EA02 EB03                 3F072 AA29 GD03 GD05 GG01 KA01                       KD01 KD28

Claims (3)

[Claims] 1. A work stocking device for stocking works delivered from a press in an aligned state and supplying a stocked predetermined number of works to a downstream line. The first stock part that is stocked in an aligned state of stacking and the work that follows is temporarily stocked when the work is discharged from the first stock part, and the work that is stocked after the work is discharged from the first stock part is first Work holding means, which comprises a second stock portion for discharging to the stock portion, wherein the first and second stock portions are switched between a posture for holding the work and a posture for allowing the work to pass, respectively, and the work holding means. A stock stocking device for a work, comprising: a posture switching mechanism for switching the posture to a work holding posture. 2. A posture switching mechanism is provided for a lifter capable of moving up and down, and the lifter lifts the lifter in a contradictory manner so that the work holding means of the first stock portion is placed in a work-passing posture. 2. The work stock device according to claim 1, further comprising an operation member for switching the work holding means of the two stock portions to a work holding posture. 3. A work aligning and loading device for loading work fed out from a press into a pallet in a stacked alignment state, the work stocking device according to claim 1 or 2, and a stacking device. A robot for loading workpieces in the aligned state on a pallet,
A line for loading and stacking workpieces, the line comprising: a line for transporting superposed workpieces from a stock device to a workpiece intake portion of a robot.