A powder forming machine multi-down punch mechanism and a powder forming machine including the mechanism

Abstract

The present invention discloses a multi-down punch mechanism for a powder forming machine, comprising a die plate, a core rod base plate, a fixed punch plate, a floating punch plate, and a base plate. These components are secured by a limiting device to maintain parallel positions. The floating punch plate is movable and fixed to enable reciprocating movement in the direction defined by the limiting device. The relative positions of the floating punch plates are adjustable. The floating punch plates include corresponding position adjustment devices. The number of floating punch plates in the down punch mechanism of the powder forming machine is greater than or equal to three. The powder forming machine of the present invention can be used to produce powder-molded products with more complex structures and a greater number of internal steps than those capable of being pressed by existing powder forming machines. The density of the complex parts pressed is uniform, and the machine is simple and convenient to operate and adjust, reducing labor intensity and improving work efficiency. This can also reduce production costs and conserve materials.

Description

Technical Field

[0001] The present invention relates to a powder forming machine, in particular to a lower five-punch mechanism of a powder forming machine and a powder forming machine comprising the mechanism. Background Art

[0002] Powder forming machines are highly favored by businesses due to their ability to produce high-precision, smooth parts in a single press, along with their wide range of applications, high production efficiency, and material utilization. They are now widely used to press various metal, ceramic, and bakelite powder products. The shapes of pressed products are becoming increasingly complex, with parts featuring multi-stepped, complex shapes, multiple through-holes, and multiple internally stepped blind holes all now possible. With the development of new-generation communication technologies, particularly 5G technology, complex-shaped, thin-walled ceramic products are increasingly being used in 5G equipment, and their shapes are becoming increasingly complex.

[0003] Existing powder forming machines have a maximum of four lower punch mechanisms, including two floating punch plates. Due to the complex structure and great design difficulty of powder forming machines with more than two floating punch plates, there has been no feasible design scheme for multiple lower punch mechanisms. As a result, many parts with complex internal steps cannot be processed by one-piece forming.

[0004] Therefore, technicians in this field are committed to developing a multi-down punch mechanism for a powder forming machine, which has more than two floating punches to ensure uniform density of complex parts pressed products, simple and convenient operation and adjustment, which not only reduces labor intensity, but also improves work efficiency, and can reduce production costs and save materials. Summary of the Invention

[0005] The technical problem to be solved by the present invention is that the existing technology cannot form complex products with multiple stepped blind holes in one piece, and the multi-down punch mechanism with more than two floating punch plates has no feasible technical solution because the mechanism is too complex and the design is difficult.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A multi-down punch mechanism for a powder forming machine includes a female die plate, a core rod base plate, a fixed punch plate, a floating punch plate, and a base plate. These components are secured by a limiting device to maintain parallel positions. The floating punch plate is movable and fixed to enable reciprocating movement in the direction defined by the limiting device. The relative positions of the floating punch plates are adjustable. The floating punch plates include corresponding position adjustment devices to adjust the relative positions of the molds mounted on each punch plate within the mold cavity of the female die plate, thereby enabling the molds to be ejected after product formation, completing product formation and demolding. All punch plates can be independently mounted with molds, thereby forming a complete multi-down punch mechanism. The number of floating punch plates in the powder forming machine down punch mechanism is greater than or equal to three.

[0008] Furthermore, the multi-lower punch mechanism of the powder forming machine is a lower five-punch mechanism; the floating punch plates are the second, third, and fourth lower punch plates, and the fixed punch plates are the first and fifth lower punch plates; the aforementioned components are fixed by a limiting device to maintain a parallel position with each other, wherein the second, third, and fourth lower punch plates are enabled to reciprocate in the direction defined by the limiting device via a motion fixing device; the relative position of the second, third, and fourth lower punch plates is adjustable; the second, third, and fourth lower punch plates include corresponding position adjustment devices to adjust the relative position of the mold mounted on each punch plate within the mold cavity of the female mold plate, and simultaneously enable the mold to be ejected after the product is formed, completing product forming and demolding. The first, second, third, fourth, and fifth lower punch plates can each independently be equipped with a mold, thereby realizing a complete lower five-punch mechanism.

[0009] Furthermore, the limiting device of the multi-lower punch mechanism of the powder forming machine comprises a plurality of main guide posts, each connected at its ends to the female mold plate and the core rod base plate. The movable fixing device comprises a fixed guide post, which is a hollow structure. The main guide posts extend through the hollow structure of the fixed guide posts, allowing the main guide posts to reciprocate along the direction defined by the fixed guide posts. The lower punch plate and the fifth lower punch plate are fixed punch plates. The lower punch plate and the base plate are mounted on the fixed guide posts, and the fifth lower punch plate is mounted on the base plate. The relative position between the lower punch plate and the fifth lower punch plate remains unchanged. The second, third, and fourth lower punch plates are configured to extend through the fixed guide posts.

[0010] Furthermore, the position adjustment device of the multi-down punch mechanism of the powder forming machine is a bevel mechanism, including a demolding rod, a bevel block, a slider and a stop block. The upper part of the demolding rod is connected to the female mold plate, and the lower part is in contact with the top of the bevel block. The other end of the bevel block is a bevel, which is in contact with the slider. The position change of the bevel block is driven by the position change of the demolding rod, which is then converted into a position change of the bevel at the other end of the bevel block, thereby driving the position change of the slider; when the powder forming machine is operating in the forming state, the slider is in contact with the stop block; when the powder forming machine is operating in the demolding state, the slider moves to a position where it is not in contact with the stop block. At this time, the punch plate can move to the demolding position so that the mold can be moved out of the mold cavity.

[0011] Furthermore, the bottom plate of the multi-down punch mechanism of the powder forming machine also includes a block forming adjustment device arranged on the bottom plate, one end of the block is in contact with the slider, and the other end of the block is connected to the block forming adjustment device; by adjusting the block forming adjustment device, the relative distance between the end of the block in contact with the slider and the bottom plate can be adjusted, thereby adjusting the forming position of the corresponding punch plate.

[0012] Preferably, the powder forming machine can adopt a multi-lower punch mechanism arranged in the following manner: a lower punch is installed at the position closest to the female template, and the main pillar passes through a lower punch plate and is fixed on a fixed guide pillar; the second lower punch plate passes through the fixed guide pillar and is located between the lower punch plate and the third lower punch plate, one end of the second lower punch die rod passes through a lower punch plate and is connected to the female template, and the other end contacts the second lower punch inclined block, one end of the second lower punch stop block contacts the second lower punch slider, and the other end passes through the third lower punch plate and the fourth lower punch plate in turn and is connected to the stop block forming adjustment device; the third lower punch plate passes through the fixed guide pillar and is located between the second lower punch plate and the fourth lower punch plate, and the third lower punch plate One end of the punching die rod passes through the lower punch plate and the second lower punch plate in sequence and is connected to the female template, and the other end passes through the fourth lower punch plate and contacts the third lower punch oblique block, one end of the third lower punch stop block contacts the third lower punch slider, and the other end passes through the fourth lower punch plate and is connected to the stop block forming adjustment device; the fourth lower punch plate passes through the fixed guide column and is located between the third lower punch plate and the stop block forming adjustment device, one end of the fourth lower punch die rod passes through the third lower punch plate, the second lower punch plate and the lower punch plate in sequence and is connected to the female template, and the other end contacts the fourth lower punch oblique block, one end of the fourth lower punch stop block contacts the fourth lower punch slider, and the other end is connected to the stop block forming adjustment device;

[0013] Furthermore, the stopper forming adjustment device of the multi-down punch mechanism of the powder forming machine includes an adjusting rod, and the position of the stopper is adjusted by the adjusting rod.

[0014] Furthermore, the stopper forming adjustment device of the multi-down punch mechanism of the powder forming machine includes a bevel ring mechanism, and the position of the stopper is adjusted by adjusting the relative positions of the upper and lower bevel rings.

[0015] Furthermore, the block forming adjustment device of the multi-down punch mechanism of the powder forming machine includes a threaded connection.

[0016] Preferably, the block forming adjustment device of the multi-down punch mechanism of the powder forming machine can be a block forming adjustment plate or a block forming adjustment ring. It can be decided whether to use a block forming adjustment plate, a block forming adjustment ring, or a combination of the two according to different product requirements.

[0017] Furthermore, the multi-down punch mechanism of the powder forming machine also includes a block layout system, including a bottom plate, side blocks, a center block and a block forming adjustment device; the side blocks, the center block and the block forming adjustment device are all mounted on the bottom plate; the center block is arranged near the geometric center of the bottom plate, and the side blocks are arranged around the center block;

[0018] Furthermore, the block forming adjustment device corresponding to the center block is set within the angle range between the geometric center connection line of a group of symmetrically arranged side blocks and the geometric center connection line of another group of symmetrically arranged side blocks.

[0019] Furthermore, the side blocks are two-down punch blocks and three-down punch blocks, and the center block is a four-down punch block; the block forming adjustment devices corresponding to the four-down punch blocks are arranged within the range of the included angle between the geometric center connection line of a group of symmetrically arranged two-down punch blocks and the geometric center connection line of a group of symmetrically arranged three-down punch blocks; the block forming adjustment devices corresponding to the two-down punch blocks and the three-down punch blocks are arranged in a direction parallel to the geometric center connection line of a group of three-down punch blocks;

[0020] Furthermore, the side blocks are two-down punch blocks and three-down punch blocks, and the center block is a four-down punch block; the geometric center connection line of a group of symmetrically arranged two-down punch blocks is at a vertical angle to the geometric center connection line of a group of symmetrically arranged three-down punch blocks, and the block forming adjustment devices corresponding to the four-down punch blocks are set within the aforementioned vertical angle range; the block forming adjustment devices corresponding to the two-down punch blocks and the three-down punch blocks are set in a direction parallel to the geometric center connection line of the group of three-down punch blocks;

[0021] Furthermore, there are two two-down punch blocks, which are symmetrically arranged on both sides of the four-down punch block; there are two three-down punch blocks, which are symmetrically arranged on both sides of the four-down punch block; two two-down punch blocks and two three-down punch blocks are staggered around the four-down punch block;

[0022] The present invention also provides a powder forming machine, the other structures of which are similar to those of the existing powder forming machines, and which includes any one of the above-mentioned multi-down punch mechanisms.

[0023] In summary, the present invention overcomes the difficulties in the design of the multi-down punch mechanism of the powder forming machine, and provides a new practical multi-down punch mechanism design scheme, which includes at least three floating punch plates. The powder forming machine using this design scheme can be used to produce powder forming products with more complex structures and more internal steps than the products that can be pressed by existing powder forming machines. The density of the pressed products of complex parts is uniform, and the operation and adjustment of the machine are simple and convenient, which not only reduces labor intensity, but also improves work efficiency, and can reduce production costs and save materials.

[0024] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a front view of a multi-downstroke mechanism;

[0026] Figure 2 It is a side view of a multi-downstroke mechanism;

[0027] Figure 3 It is a front view of a lower five-stroke mechanism;

[0028] Figure 4It is a side view of a lower five-stroke mechanism;

[0029] Figure 5 It is the position of the main components of the lower five-stroke mechanism when it is in the forming state;

[0030] Figure 6 It is the position of the main components of the lower five-stroke mechanism when it is in the demoulding state;

[0031] Figure 7 It is an enlarged schematic diagram of the block forming adjustment device of the lower five-stroke mechanism;

[0032] Figure 8 It is a block layout scheme for the lower five-stroke mechanism;

[0033] Figure 9 It is a front view of the lower five-stroke mechanism including the block layout scheme;

[0034] Figure 10 It is a side view of the lower five-stroke mechanism including the block layout scheme; DETAILED DESCRIPTION

[0035] The following describes several preferred embodiments of the present invention with reference to the accompanying drawings to make its technical content clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, and the scope of protection of the present invention is not limited to the embodiments mentioned herein.

[0036] In the drawings, components with identical structures are denoted by the same reference numerals, and components with similar structures or functions are denoted by similar reference numerals. The size and thickness of each component shown in the drawings are arbitrary and are not limited by the present invention. For clarity, the thickness of components in some places in the drawings is appropriately exaggerated.

[0037] Example 1:

[0038] like Figure 1 , Figure 2 As shown, the multi-down punch mechanism of the powder forming machine includes a female die plate 3, a core rod base plate 4, a fixed punch plate 1, a floating punch plate 2, and a base plate 5. These components are fixed by a limiter 6 to maintain parallel positions. The floating punch plate 2 is movable by a fixed device 7 to enable reciprocating movement in the direction defined by the limiter 6. The relative positions of the floating punch plates 2 are adjustable. The floating punch plates 2 include corresponding position adjustment devices 8 to adjust the relative positions of the molds mounted on each punch plate within the mold cavity of the female die plate 3, thereby enabling the mold to be ejected after the product is formed, completing product formation and demolding. All punch plates can be independently mounted with molds, thus forming a complete multi-down punch mechanism. The figure only shows the structure of three floating punch plates. In actual designs, the number of floating punch plates can be more than three.

[0039] Example 2:

[0040] like Figure 3 、 Figure 4 As shown: the female template 4 is connected to the core rod bottom plate 3 through the main column 1, the main column 1 passes through the hollow mechanism of the fixed guide column 2 and can move in the direction limited by the fixed guide column 1; a lower punch plate 6 and the bottom plate 5 are installed on the fixed guide column 2; a lower punch plate 6 is installed at the position closest to the female template 3, the main column 1 passes through the lower punch plate 6 and is fixed on the fixed guide column 2, the second lower punch plate 7 passes through the fixed guide column 2, and is located between the lower punch plate 6 and the third lower punch plate 12, one end of the second lower punch die rod 8 passes through the lower punch plate 6 and is connected to the female template 3, and the other end contacts the second lower punch inclined block 9, one end of the second lower punch stop block 9 contacts the second lower punch slider 11, and the other end passes through the third lower punch plate 12 and the fourth lower punch plate 17 in sequence to be connected to the stop block forming adjustment device; the third lower punch plate 12 passes through the fixed guide column 2 , located between the second lower punch plate 7 and the fourth lower punch plate 17, one end of the three-down punching die rod 13 passes through the lower punch plate 6 and the second lower punch plate 7 in sequence and is connected to the female template 3, and the other end passes through the four lower punch plates 17 and contacts the three-down punch oblique block 14, one end of the three-down punch stopper 16 contacts the three-down punch slider 15, and the other end passes through the four lower punch plates 17 and is connected to the stopper forming adjustment device; the four lower punch plates 17 pass through the fixed guide column 2 and are located in the middle of the three lower punch plates 12 and the stopper forming adjustment device, one end 18 of the four-down punching die rod passes through the three lower punch plates 12, the two lower punch plates 7 and the lower punch plate 6 in sequence and is connected to the female template 3, and the other end contacts the four-down punch oblique block 19, one end of the four-down punch stopper 21 contacts the four-down punch slider 20, and the other end is connected to the stopper forming adjustment device.

[0041] like Figure 5 As shown, the mechanism is in the forming state, taking the three-down punch plate indicated in the figure as an example: at this time, the three-down punch die rod 13 is not in contact with the three-down punch inclined block 14, and the three-down punch slider 15 is in contact with the three-down punch stop block 16. At this time, the die in the three-down punch plate enters the female plate 3, forming a component for powder forming;

[0042] like Figure 6 As shown, the mechanism is in the demoulding state, taking the three-down punch plate indicated in the figure as an example: at this time, one end of the three-down punch inclined block 14 is in contact with the three-down punch die rod 13, and the other end of the three-down punch inclined block 14 is an inclined surface, which is in contact with the three-down punch slider 15; when the three-down punch die rod 13 moves toward the direction of the three-down punch slider 15 along the female template 3, the position of the three-down punch inclined block 14 is driven to change, which is then converted into a position change of the inclined surface of the other end of the three-down punch inclined block 14, thereby driving the position of the three-down punch slider 15 to change; until the three-down punch slider 15 moves to a position where it is not in contact with the three-down punch stop block 16, the three-down punch plate 12 can move to the demoulding position so that the mold can be moved out of the mold cavity.

[0043] The figure also includes two lower punching die rods 8, two lower punching oblique blocks 9, two lower punching sliders 10, two lower punching blocks 11, four lower punching die rods 18, four lower punching oblique blocks 19, four lower punching sliders 20, four lower punching blocks 21, which work in conjunction with the two lower punch plates 7 and the four lower punch plates 17, and their working method is the same as that of the three lower punch plates 12.

[0044] like Figure 7 It is a block forming adjustment device, in which the two lower punch block adjusting rods 24 are connected to the two lower punch block adjusting lower plates 29 in a threaded manner, the two lower punch block adjusting upper plates 28 and the two lower punch block adjusting lower plates 29 are in inclined contact, and the two lower punch blocks 11 are connected to the two lower punch block adjusting upper plates 28; by adjusting the two lower punch block adjusting rods 24, the relative contact position between the two lower punch block adjusting upper plates 28 and the two lower punch block adjusting lower plates 29 can be changed, and the position change of the two lower punch block adjusting upper plates 28 is converted into a slope, thereby realizing the position adjustment of the two lower punch blocks 11.

[0045] The three-down block adjustment rod 25 is connected to the three-down block adjustment lower plate 31 in a threaded manner, and the three-down block adjustment upper plate 30 and the two-down block adjustment lower plate 31 are in inclined contact, and the three-down block 16 is connected to the three-down block adjustment upper plate 30; by adjusting the three-down block adjustment rod 25, the relative contact position between the three-down block adjustment upper plate 30 and the three-down block adjustment lower plate 31 can be changed, and the position change of the three-down block adjustment upper plate 30 is converted into the inclined surface, thereby realizing the position adjustment of the three-down block 16.

[0046] The four-down punch block adjustment rod 26 is connected to the gear 32, the gear 32 is connected to the block forming adjustment ring 22, and the four-down punch block 21 is connected to the block forming adjustment ring 22; by adjusting the four-down punch block adjustment rod 26 to drive the gear 32 to rotate, the rotation of the gear 32 drives the position change of the block forming adjustment ring 22, thereby realizing the position adjustment of the four-down punch block 21.

[0047] Example 3:

[0048] like Figure 8 , Figure 9 and Figure 10As shown, a lower five-punch block layout system that can be used in the lower five-punch mechanism of the present invention includes a base plate 1, two lower punch blocks 31, three lower punch blocks 32, four lower punch blocks 21 and a block forming adjustment device 4, as well as a block forming adjustment plate 492. The block forming adjustment device 4 is installed on the block forming adjustment plate 492, and the second lower punch block 31, the third lower punch block 32, the fourth lower punch block 21 and the block forming adjustment plate 492 are all installed on the bottom plate 1; the four lower punch block 21 is arranged at a position close to the geometric center of the bottom plate 1, and the second lower punch block 31 and the third lower punch block 32 are arranged around the four lower punch block 21; the block forming adjustment device 4 corresponding to the four lower punch block 21 is arranged within the angle range of the geometric center connection line of a group of symmetrically arranged two lower punch blocks 31 and the geometric center connection line of a group of symmetrically arranged three lower punch blocks 32; the block forming adjustment device 4 corresponding to the second lower punch block 31 and the third lower punch block 32 is arranged in a direction parallel to the geometric center connection line of a group of symmetrically arranged three lower punch blocks 32;

[0049] Example 4:

[0050] A powder forming machine, the other structures of which are the same as those of the existing powder forming machine, adopts the lower five-punch mechanism in the above embodiment

[0051] The preferred embodiments of the present invention have been described in detail above. It should be understood that numerous modifications and variations based on the concepts of the present invention are possible without inventive effort by those skilled in the art. Therefore, any technical solution that can be derived by one skilled in the art through logical analysis, reasoning, or limited experimentation based on the concepts of the present invention and the prior art should be within the scope of protection defined by the claims.

Claims

1. A powder forming machine, comprising a multi-down punch mechanism for a powder forming machine, comprising a female die plate, a core rod bottom plate, a fixed punch plate, a floating punch plate, a bottom plate, a limiting device, a movable fixing device, and a position adjustment device; the female die plate, core rod bottom plate, fixed punch plate, floating punch plate, and bottom plate are fixed by the limiting device to maintain mutually parallel positions; the female die plate and the core rod bottom plate are connected to the limiting device; the floating punch plate is reciprocatingly movable in a direction defined by the limiting device by the movable fixing device; the relative position between the floating punch plates is adjustable; the floating punch plates are connected to corresponding position adjustment devices to adjust the relative position of the molds mounted on the respective punch plates in the mold cavity on the female die plate; The position adjustment device includes an oblique wedge mechanism, including a demoulding rod, an oblique block, a slider and a stopper. The upper part of the demoulding rod is connected to the female mold plate, and the lower part contacts the top of the oblique block. The other end of the oblique block is an inclined surface, which contacts the slider. The position change of the oblique block is driven by the position change of the demoulding rod, which is then converted into a position change of the oblique surface of the other end of the oblique block, thereby driving the position of the slider to change; the position adjustment device also includes a plurality of stopper forming adjustment devices provided on the bottom plate; one end of the stopper contacts the slider, and the other end of the stopper is connected to the stopper forming adjustment device; by adjusting the stopper forming adjustment device, the relative distance between the end of the stopper in contact with the slider and the bottom plate can be adjusted, thereby adjusting the forming position of the corresponding punch plate; The multi-down punch mechanism is a five-down punch mechanism, the fixed punch plates are a one-down punch plate and a five-down punch bottom plate, and the floating punch plates are three, namely, two-down punch plates, three-down punch plates, and four-down punch plates; It also includes a block layout system of a powder forming machine, including a base plate, two lower punch blocks, three lower punch blocks, four lower punch blocks, a block forming adjustment device, and a block forming adjustment plate; the block forming adjustment device is installed on the block forming adjustment plate, and the two lower punch blocks, three lower punch blocks, four lower punch blocks and the block forming adjustment plate are all installed on the base plate; the four lower punch blocks are arranged at a position close to the geometric center of the base plate, and the two lower punch blocks and the three lower punch blocks are arranged around the four lower punch blocks; the block forming adjustment devices corresponding to the four lower punch blocks are arranged within the angle range of the geometric center connecting line of a group of symmetrically arranged two lower punch blocks and the geometric center connecting line of a group of symmetrically arranged three lower punch blocks; the block forming adjustment devices corresponding to the two lower punch blocks and the three lower punch blocks are arranged in a direction parallel to the geometric center connecting line of a group of symmetrically arranged three lower punch blocks.

2. The powder forming machine according to claim 1, wherein: The stopper shaping adjustment device comprises an adjusting rod, and the position of the stopper is adjusted by the adjusting rod.

3. The powder forming machine according to claim 2, wherein: The stopper forming and adjusting device is connected by thread.

4. The powder forming machine according to claim 3, wherein: The limiting device is a number of main pillars whose two ends are respectively connected to the female template and the core rod bottom plate; the moving fixing device is a fixed guide pillar, which is a hollow mechanism. The main pillar passes through the hollow mechanism of the fixed guide pillar, so that the main pillar can reciprocate along the direction limited by the fixed guide pillar; a lower punch plate and a bottom plate are installed on the fixed guide pillar, and five lower punch plates are installed on the bottom plate, and the relative position between the lower punch plate and the fifth lower punch plate remains unchanged; the fixed guide pillar is set to pass through the second lower punch plate, the third lower punch plate and the fourth lower punch plate.

5. The powder forming machine according to claim 4, wherein: The multi-lower punch mechanism is arranged as follows: a lower punch is installed at the position closest to the female template, and the main pillar passes through the lower punch plate and is fixed on the fixed guide pillar; the second lower punch plate passes through the fixed guide pillar and is located between the lower punch plate and the third lower punch plate, one end of the second lower punch die rod passes through the lower punch plate and is connected to the female template, and the other end contacts the second lower punch inclined block, one end of the second lower punch stop block contacts the second lower punch slider, and the other end passes through the third lower punch plate and the fourth lower punch plate in sequence and is connected to the stop block forming adjustment device; the third lower punch plate passes through the fixed guide pillar and is located between the second lower punch plate and the fourth lower punch plate, and one end of the third lower punch die rod is sequentially connected to the female template. It passes through the lower punch plate and the second lower punch plate and is connected to the female template, and the other end passes through the fourth punch plate and contacts the three-punch oblique block. One end of the three-punch stop block contacts the three-punch slider, and the other end passes through the four-punch plate and is connected to the stop block forming adjustment device; the four-punch plate passes through the fixed guide column and is located in the middle of the three-punch plate and the stop block forming adjustment device. One end of the four-punch die rod passes through the three-punch plate, the two-punch plate and the lower punch plate in sequence and is connected to the female template, and the other end contacts the four-punch oblique block. One end of the four-punch stop block contacts the four-punch slider, and the other end is connected to the stop block forming adjustment device.

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