CN216858226U - Powder metallurgy inclined hole forming die - Google Patents

Abstract

The utility model discloses a powder metallurgy inclined hole forming die, which comprises a lower punch seat, an inclined hole core rod, a tie rod, a coupling sleeve, an elastic part and a base. The lower punch seat is provided with a punching groove; the inclined hole core The top end of the rod is obliquely penetrated into the punching groove; the bottom end of the oblique hole mandrel is hinged to the top end of the coupling sleeve, the top end of the pull rod is hinged to the bottom end of the coupling sleeve, and the bottom end of the pull rod is hinged to the bottom end of the coupling sleeve. The end is hinged on the base; one end of the elastic member abuts on the lower punch seat, and the other end of the elastic member abuts on the coupling sleeve, the elastic member is used to provide a drive to drive the inclined hole mandrel close to the punching hole Elastic stress of groove movement. The powder metallurgy oblique hole forming die of the utility model can reduce the resistance of the oblique hole mandrel in the forming process, and the oblique hole mandrel is kept in contact with the upper punch seat under the action of the elastic component.

Description

Powder metallurgy inclined hole forming mold

technical field

The utility model relates to the technical field of powder metallurgy mold fixtures, in particular to a powder metallurgy inclined hole forming mold.

Background technique

At present, powder metallurgy is a process technology for preparing metal powder or using metal powder as raw material, after forming and sintering, to manufacture metal materials, composite materials and various types of products; therefore, during manufacturing, the material powder is first filled between the molds , and then compacted and heated through the mold, and finally the finished product is obtained. When the inclined hole is formed, the inclined hole mandrel can be inserted into the mold through the inclined hole. When the mold is pressed down, the inclined hole mandrel is always pressed in the mold cavity, and the inclined hole mandrel is released from the mold cavity through the lower punching cylinder. , exit the finished product, when the inclined hole mandrel exits, it needs to cooperate with the retraction of the pull rod.

When the inclined hole is formed, the inclined hole mandrel can be inserted into the mold through the inclined hole, and when the mold is pressed down, the inclined hole mandrel is pressed and withdrawn from the finished product. However, the existing oblique hole mandrels are directly pressed and subjected to longitudinal force, and the resistance of the oblique hole mandrel during the retreating process is easy to be too large and cannot be smoothly withdrawn.

Utility model content

In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a powder metallurgy oblique hole forming die, which can reduce the resistance of the oblique hole mandrel during the molding process, and the oblique hole mandrel is maintained under the action of the elastic component. The state in which the punch seat is in contact.

The purpose of this utility model adopts following technical scheme to realize:

The powder metallurgy oblique hole forming die includes a lower punch seat, an oblique hole mandrel, a tie rod, a coupling sleeve, an elastic part and a base. The lower punch seat is provided with a punching groove; the top end of the oblique hole mandrel is inclined through The bottom end of the oblique hole mandrel is hinged to the top end of the coupling sleeve, the top end of the pull rod is hinged to the bottom end of the coupling sleeve, and the bottom end of the pull rod is hinged to the base ; One end of the elastic member abuts on the lower punch seat, and the other end of the elastic member abuts on the coupling sleeve, and the elastic member is used to provide an elastic force that drives the oblique hole mandrel to move close to the punching groove stress.

Further, the bottom end of the inclined hole mandrel is provided with a hinge block, the hinge block passes through the coupling sleeve and is hinged with the coupling sleeve; the bottom end surface of the hinge block is used for abutting with the top end surface of the pull rod.

Further, a penetration cavity is provided in the lower punch seat, the oblique hole mandrel is penetrated into the penetration cavity, and the top end of the oblique hole mandrel protrudes from the top of the penetration cavity and extends into the punching groove; The top end of the tie rod is threaded into the penetrating cavity and is hinged with the coupling sleeve; the bottom end of the tie rod is protruded from the bottom end of the penetrating cavity and is hinged on the base; the elastic component is installed in the penetrating cavity, and the elastic component One end of the elastic member abuts on the coupling sleeve, and the other end of the elastic member abuts on the bottom wall of the penetration cavity.

Further, the bottom wall of the penetration cavity is provided with a positioning seat, the positioning seat is provided with a penetration hole, and the extension direction of the penetration hole is consistent with the extension direction of the oblique hole mandrel; one end of the elastic member abuts on the coupling sleeve, and the other end of the elastic member abuts on the positioning seat.

Further, the powder metallurgy inclined hole forming die also includes an auxiliary pull rod, the end of the pull rod away from the inclined hole mandrel is formed as a mounting end, the mounting end is provided with a mounting hole, and the mounting hole extends along the length direction of the pull rod. One end of the auxiliary pull rod is provided with a connecting column, and the other end of the auxiliary pull rod is connected with the base; the connecting column is used to penetrate into the installation hole.

Further, an end of the auxiliary pull rod is provided with a penetration groove, the installation end is penetrated in the penetration groove, and the connecting post is arranged in the penetration groove and penetrated into the installation hole.

Further, the end of the auxiliary pull rod away from the pull rod is provided with a screw rod, and the base is provided with a threaded hole; the screw rod is screwed into the screw hole.

Further, the end of the auxiliary pull rod is provided with an adjustment rod, one end of the adjustment rod is slidably installed on the end of the auxiliary pull rod, and the other end of the adjustment rod is provided with the screw rod.

Further, the auxiliary pull rod is provided with an adjustment hole, and the adjustment hole extends along the height direction of the auxiliary pull rod; the adjustment rod is provided with an adjustment column, and the adjustment column is slidably installed in the adjustment hole.

Further, the adjustable oblique hole forming die further includes an upper punching seat, the upper punching seat is arranged above the punching groove, and the upper punching seat can move close to or away from the punching groove.

Compared with the prior art, the beneficial effects of the present utility model are:

1. When forming the inclined hole, it can move toward the punching groove through the upper punching seat, and metallurgical powder is arranged in the punching groove. Exit the punching groove. During this process, the oblique hole mandrel is pressed, the oblique hole mandrel and the coupling sleeve rotate relative to each other, and at the same time the coupling sleeve rotates relative to the tie rod, that is, the oblique hole mandrel has a certain swing space to prevent direct downward pressure. The oblique hole mandrel is stuck, so that the tie rod and the oblique hole mandrel move stably during the moving process, and the processing quality of the product is improved.

2. During the compression process of the oblique hole mandrel, the elastic stress provided by the elastic component makes the oblique hole mandrel always have elastic stress protruding toward the punching groove, so it can always keep in contact with the upper punch seat, so that the The inclined hole mandrel is gradually withdrawn, and the quality of the formed inclined hole is good.

Description of drawings

Figure 1 is a schematic structural diagram of the utility model.

In the figure: 10, lower punch seat; 11, punching groove; 20, inclined hole mandrel; 21, hinge block; 30, coupling sleeve; 40, elastic part; 50, tie rod; 51, mounting hole; 60, auxiliary Pull rod; 61, connecting column; 62, adjusting hole; 70, adjusting rod; 71, screw rod; 72, adjusting column; 80, base; 90, upper punch seat.

Detailed ways

Below, in conjunction with accompanying drawing and specific embodiment, the utility model is further described:

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal" and "top" , "bottom", "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that A device or element must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as a limitation of the present invention.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments, and are not intended to limit the present invention.

The powder metallurgy inclined hole forming die as shown in FIG. 1 includes a lower punch seat 10, an inclined hole mandrel 20, a tie rod 50, a coupling sleeve 30, an elastic part 40 and a base 80, and a punching groove is provided on the lower punch seat 10 11 , the top end of the oblique hole mandrel 20 is obliquely penetrated into the punching groove 11 , and the bottom end of the oblique hole mandrel 20 is hinged to the top end of the coupling sleeve 30 . Specifically, the top end of the pull rod 50 is hinged to the bottom end of the coupling sleeve 30 , and the bottom end of the pull rod 50 is hinged to the base 80 , one end of the elastic member 40 abuts on the lower punch seat 10 , and the other end of the elastic member 40 abuts on the base 80 . On the coupling sleeve 30 , the elastic member 40 can provide an elastic stress, and the elastic stress can drive the inclined hole mandrel 20 to move close to the punching groove 11 .

On the basis of the above structure, when using the powder metallurgy inclined hole forming die of the present invention, when forming the inclined hole, the upper punching seat 90 can be moved toward the punching groove 11, and the punching groove 11 is provided with a metallurgical For powder, when the upper punching seat 90 is punching, the oblique hole mandrel 20 is pressed against the oblique hole, and the oblique hole mandrel 20 gradually withdraws from the punching groove 11. After the oblique hole mandrel 20 withdraws, an oblique hole can be formed on the product.

During this process, the oblique hole mandrel 20 is pressed, the oblique hole mandrel 20 and the coupling sleeve 30 rotate relative to each other, and at the same time the coupling sleeve 30 rotates relative to the pull rod 50 , that is, the inclined hole mandrel 20 and the pull rod 50 can be hingedly connected through the coupling sleeve 30 , and the inclined hole mandrel 20 is hinged with the coupling sleeve 30, and the coupling sleeve 30 is hinged with the pull rod 50, so when the inclined hole mandrel 20 is pressed, the inclined hole mandrel 20 and the coupling sleeve 30 have a certain swing space, while the coupling sleeve 30 It can also swing relative to the tie rod 50, so when it is pressed, the swing is more flexible, preventing the jamming of the oblique hole mandrel 20 by directly pressing down, so that the tie rod 50 and the oblique hole mandrel 20 move stably during the movement process, and improve the processing of the product. quality.

Of course, after the inclined hole is formed, the inclined hole mandrel 20 will not completely withdraw from the punching groove, but under the action of the coupling sleeve 30 and the tie rod 50, the inclined hole mandrel 20 is compressed to the bottom of the punching groove. The end face is flush, and then the product can be removed, and then reset.

It should be noted that, during the compression process of the inclined hole mandrel 20, the elastic stress provided by the elastic member 40 makes the inclined hole mandrel 20 always have elastic stress protruding toward the punching groove 11, so that it can always maintain the same The seat 90 is in abutment state, so that the inclined hole mandrel 20 is kept in contact with the end face of the upper punch seat 90 and gradually withdraws, so as to avoid the premature withdrawal of the inclined hole and the collapse of the hole position, and the quality of the formed inclined hole is good.

Further, during assembly, the bottom end of the inclined hole mandrel 20 penetrates into the coupling sleeve 30 and is hinged in the coupling sleeve 30, and similarly, the top end of the pull rod 50 penetrates into the coupling sleeve 30 and is hinged to the coupling sleeve 30. Set of 30. In this way, the oblique hole mandrel 20 and the tie rod 50 are both penetrated into the coupling sleeve 30 and hinged, and the coupling sleeve 30 can limit the swing range of the oblique hole mandrel 20 and prevent the oblique hole mandrel 20 from swinging too much and causing back holes uneasy situation.

More specifically, a hinge block 21 can also be provided at the bottom end of the oblique hole mandrel 20, the hinge block 21 is threaded through the coupling sleeve 30, and the hinge block 21 is hinged with the coupling sleeve 30. Specifically, the bottom end surface of the hinge block 21 can be Contact with the top end surface of the pull rod 50, so that when the inclined hole mandrel 20 is pressed, the force of the inclined hole mandrel 20 can be transmitted to the pull rod 50 through the hinge block 21, and the hinge block 21 presses the pull rod 50, and the force area is relatively Larger, the force is more balanced.

Further, in this embodiment, a penetration cavity can be provided in the lower punch seat 10, the oblique hole mandrel 20 can be penetrated into the penetration cavity, and the top end of the inclined hole mandrel 20 is pierced from the top of the penetration cavity and extended. In addition, the top end of the pull rod 50 penetrates into the penetration cavity and is hinged with the coupling sleeve 30 . On the basis of this structure, the elastic member 40 is installed in the penetration cavity, one end of the elastic member 40 is abutted on the coupling sleeve 30, and the other end of the elastic member 40 is abutted against the bottom wall of the penetration cavity.

In this way, in use, the oblique hole mandrel 20, the coupling sleeve 30, the elastic member 40 and part of the tie rod 50 are all threaded in the penetrating cavity, that is, the linkage installation structure is located in the penetrating cavity, the linkage structure is more stable, and the oblique hole mandrel is The movable range of the 20 and the tie rod 50 can be limited by the penetrating cavity, and the elastic member 40 can reduce the deflection in the penetrating cavity.

It should be noted that the above-mentioned elastic member 40 can be selected as a spring in the prior art, the spring can be sheathed outside the pull rod 50, and the assembly structure of the spring is relatively stable. The spring abuts between the coupling sleeve 30 and the bottom wall of the penetration cavity, and the elastic stress provided by the spring can drive the coupling sleeve 30 to approach the punching groove 11, so that the oblique hole mandrel 20 and the tie rod 50 move to a certain extent, and the synchronization is relatively good. .

Further, a positioning seat can also be provided on the bottom wall of the penetration cavity, and a penetration hole is provided on the positioning seat, and the extension direction of the penetration hole is consistent with the extension direction of the oblique hole mandrel 20. One end of the elastic member 40 abuts on the coupling sleeve 30, and the other end of the elastic member 40 abuts on the positioning seat. The elastic member 40 can be clamped by the coupling sleeve 30 and the positioning seat, and the assembly structure of the elastic member 40 is more stable. In addition, the part of the tie rod 50 pierced from the penetration cavity can be penetrated to the penetration hole, and the tie rod 50 and the inclined hole mandrel 20 can be kept consistent within a certain range through the limitation of the positioning seat.

Further, the powder metallurgy inclined hole forming die also includes an auxiliary pull rod 60 , the end of the pull rod 50 away from the inclined hole mandrel 20 is formed as a mounting end, the mounting end is provided with a mounting hole 51 , and the mounting hole 51 is along the length direction of the pull rod 50 . extension; one end of the auxiliary pull rod 60 is provided with a connecting column 61 , and the other end of the auxiliary pull rod 60 is connected with the base 80 ; the connecting column 61 is used to penetrate into the installation hole 51 .

During assembly, the pull rod 50 can be assembled with the auxiliary pull rod 60, the auxiliary pull rod 60 can increase the pull-back range of the pull rod 50, and the auxiliary pull rod 60 is assembled through the connecting column 61 and the installation hole 51 of the pull rod 50, and the installation hole 51 is along the pull rod. 50 extends in the length direction, so a certain assembly space is reserved. On the one hand, it is used for direct assembly of the connecting column 61 on the auxiliary pull rod 60, which reduces the machining accuracy, and the connecting column 61 has a certain movable space in the installation hole 51. The inclined hole When the mandrel 20 is under pressure, the tie rod 50 also has a certain retracting space to prevent the oblique hole mandrel 20 from being stuck during the retracting process.

More specifically, a penetration groove can be provided at the end of the auxiliary pull rod 60. When assembling the pull rod 50 and the auxiliary pull rod 60, the installation end of the pull rod 50 can be inserted into the penetration groove of the auxiliary pull rod 60. The above connection The post 61 is arranged in the penetration groove and penetrated into the installation hole 51 , that is, the pull rod 50 and the auxiliary pull rod 60 are sleeved with each other, and the assembly structure is more stable.

Further, a screw rod 71 may be provided at the end of the auxiliary pull rod 60 away from the pull rod 50, and a threaded hole is correspondingly provided on the base 80. When the auxiliary pull rod 60 and the base 80 are assembled, the screw rod 71 can be screwed into the threaded hole. In this way, the auxiliary rod 60 can be moved up and down relative to the base 80 through the rotation of the screw 71 in the threaded hole, that is, the auxiliary rod 60 can be extended or retracted relative to the base 80 as a whole, the overall length can be adjusted, and then the connection with it can be adjusted. The overall length of the tie rod 50 correspondingly adjusts the length of the oblique hole mandrel 20 extending into the punching groove 11 , so the depth of the oblique hole formed by the oblique hole mandrel 20 can be adjusted.

It should be noted that, in other cases, a chute can also be provided on the base 80, the end of the auxiliary pull rod 60 can be slidably inserted into the chute of the base 80, and the auxiliary pull rod 60 can slide relative to the chute. When the auxiliary pull rod 60 is adjusted to an appropriate height, the auxiliary pull rod 60 and the chute can be locked by a structure such as a screw.

Further, the end of the auxiliary pull rod 60 is provided with an adjustment rod 70 , one end of the adjustment rod 70 is slidably installed on the end of the auxiliary pull rod 60 , and the other end of the adjustment rod 70 is provided with the above-mentioned screw 71 . The adjusting rod 70 can be processed independently, and the adjusting rod 70 is assembled with the screw rod 71, which is convenient for processing and more convenient for adjustment. In addition, the adjustment rod 70 slides relative to the auxiliary pull rod 60, and the length of the auxiliary pull rod 60 relative to the base 80 can also be adjusted, and the adjustment range is wider.

More specifically, an adjustment hole 62 may be provided on the auxiliary pull rod 60 , the adjustment hole 62 extends along the height direction of the auxiliary pull rod 60 , and an adjustment column 72 is correspondingly provided on the adjustment rod 70 , and the adjustment column 72 is slidably installed in the adjustment hole 62 . Inside. In this way, the adjustment rod 70 can also be adjusted in a small range relative to the auxiliary pull rod 60, so the overall length of the auxiliary pull rod 60 and the pull rod 50 relative to the overall length of the base 80 can be adjusted in two stages, that is, the screw 71 of the adjustment rod 70 can be matched with the thread of the base 80. The first adjustment is realized, and then the second adjustment is realized by sliding the adjustment column 72 and the adjustment hole 62, and the adjustment range is relatively large.

Of course, after the adjustment post 72 and the adjustment hole 62 slide into place, they can be locked by the structure of the adjustment bolt and the nut. On the basis of this structure, the above-mentioned adjusting column 72 can be optionally formed by adjusting bolts in the prior art.

Further, the adjustable oblique hole forming die also includes an upper punch seat 90, which is arranged above the lower punch seat 10, and the upper punch seat 90 can be driven by an oil cylinder or an air cylinder, and can be close to or away from the punching recess. The groove 11 moves, and the upper punching seat 90 can press the inclined hole mandrel 20 after moving close to the punching groove 11 . In this way, when the oblique hole is formed, the upper punching seat 90 can be moved toward the punching groove 11, and metallurgical powder is provided in the punching groove 11. When the upper punching seat 90 is punched, the oblique hole mandrel 20 is pressed against the top. , the oblique hole mandrel 20 is gradually withdrawn from the punching groove 11, and the oblique hole mandrel 20 can form an oblique hole on the product after the oblique hole mandrel 20 is withdrawn.

For those skilled in the art, various other corresponding changes and deformations can be made according to the technical solutions and concepts described above, and all these changes and deformations should fall within the protection scope of the claims of the present invention.

Claims (10)

1. The powder metallurgy inclined hole forming die is characterized by comprising a lower punching seat, an inclined hole core rod, a pull rod, a connecting sleeve, an elastic component and a base, wherein a punching groove is formed in the lower punching seat; the top end of the inclined hole core rod is obliquely connected into the punching groove in a penetrating manner; the bottom end of the inclined hole core rod is hinged to the top end of the connecting sleeve, the top end of the pull rod is hinged to the bottom end of the connecting sleeve, and the bottom end of the pull rod is hinged to the base; one end of the elastic component is abutted against the lower punching seat, the other end of the elastic component is abutted against the connecting sleeve, and the elastic component is used for providing elastic stress for driving the inclined hole core rod to move close to the punching groove.

2. The powder metallurgy inclined hole forming die of claim 1, wherein a hinge block is arranged at the bottom end of the inclined hole core rod and is connected with the connecting sleeve in a penetrating way and hinged with the connecting sleeve; the bottom end face of the hinged block is used for being abutted against the top end face of the pull rod.

3. The powder metallurgy inclined hole forming die of claim 1, wherein a cross-connecting cavity is formed in the lower punching seat, the inclined hole core rod is connected in the cross-connecting cavity in a penetrating mode, and the top end of the inclined hole core rod penetrates out of the top end of the cross-connecting cavity and extends into the punching groove; the top end of the pull rod is connected in the through cavity in a penetrating way and hinged with the connecting sleeve; the bottom end of the pull rod penetrates out of the bottom end of the penetrating cavity and is hinged to the base; the elastic component is installed in the cross connection cavity, one end of the elastic component is abutted to the connecting sleeve, and the other end of the elastic component is abutted to the bottom wall of the cross connection cavity.

4. The powder metallurgy inclined hole forming die of claim 3, wherein a positioning seat is arranged on the bottom wall of the cross-connecting cavity, a cross-connecting hole is arranged on the positioning seat, and the extending direction of the cross-connecting hole is consistent with the extending direction of the inclined hole core rod; the pull rod penetrates through the penetration hole; one end of the elastic component is abutted against the connecting sleeve, and the other end of the elastic component is abutted against the positioning seat.

5. The powder metallurgy inclined hole forming die of any one of claims 1 to 4, further comprising an auxiliary pull rod, wherein the end of the pull rod far away from the inclined hole core rod is formed into a mounting end, the mounting end is provided with a mounting hole, and the mounting hole extends along the length direction of the pull rod; one end of the auxiliary pull rod is provided with a connecting column, and the other end of the auxiliary pull rod is connected with the base; the connecting column is used for penetrating into the mounting hole.

6. The powder metallurgy inclined hole forming die of claim 5, wherein the end of the auxiliary pull rod is provided with a through connecting groove, the mounting end is penetrated in the through connecting groove, and the connecting column is arranged in the through connecting groove and is penetrated in the mounting hole.

7. The forming die for the inclined hole in powder metallurgy according to claim 5, wherein a screw is arranged at the end part of the auxiliary pull rod, which is far away from the pull rod, and a threaded hole is arranged on the base; the screw rod is screwed in the threaded hole.

8. The powder metallurgy inclined hole forming die according to claim 7, wherein an end of the auxiliary pull rod is provided with an adjusting rod, one end of the adjusting rod is slidably mounted at the end of the auxiliary pull rod, and the other end of the adjusting rod is provided with the screw rod.

9. The powder metallurgy inclined hole forming die of claim 8, wherein the auxiliary pull rod is provided with an adjusting hole, and the adjusting hole extends along the height direction of the auxiliary pull rod; the adjusting rod is provided with an adjusting column, and the adjusting column is slidably arranged in the adjusting hole.

10. The powder metallurgy inclined hole forming die according to any one of claims 1 to 4, wherein the adjustable inclined hole forming die further comprises an upper punching seat, the upper punching seat is arranged above the punching groove, and the upper punching seat can move close to or away from the punching groove.

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