A type of shrapnel cutting mold

Abstract

This invention discloses a spring-cutting mold, comprising a mounting plate, a support plate, and a deck plate arranged sequentially below the mounting plate. The support plate and the deck plate are movable vertically relative to the mounting plate. The mounting plate has an upper cutting edge in its center, the support plate has an upwardly extending cutter holder in its center, and the deck plate has an upwardly extending punch in its center. The top surface width of the cutter holder is greater than the width of the upper cutting edge, and the cutter holder has a vertically extending channel inside. The top tip of the punch plate is inserted upward into the channel. The top surface width of the punch plate is less than the width of the upper cutting edge, and the top surface of the punch plate has several steps that rise sequentially from left to right. The invention has a reasonable structural design. By using several steps that rise sequentially from left to right on the top surface of the punch plate, it greatly improves the control over the number of spring pieces cut and reduces spring piece waste.

Description

Technical Field

[0001] This invention relates to the field of mold technology, and in particular to a cutting mold for spring sheets. Background Technology

[0002] In the process of manufacturing micro switches, it is often necessary to insert corresponding springs into the housing of the micro switch. Therefore, the factory needs to manufacture a certain number of springs to meet this requirement.

[0003] To improve the efficiency of shrapnel production, see [link / reference]. Figure 1 The factory usually produces a strip (18) first, which has many rectangular frames (19) on it, and each rectangular frame (19) has four spring clips. Figure 1 (not shown in the image), four spring pieces are distributed independently along the width of the strip (18). The two ends of each spring piece are connected to the two sides of the rectangular frame (19). Therefore, the required number of spring pieces need to be cut out for subsequent assembly.

[0004] However, existing stamping dies generally cut all four spring pieces in the rectangular frame (19) from the strip (18) at once, which makes it difficult to control the number of spring pieces cut. For example, if only one spring piece is needed, four spring pieces are cut out at once, which will result in waste of spring pieces. Summary of the Invention

[0005] The purpose of this invention is to provide a cutting mold for spring pieces, so as to solve the technical problem of difficulty in controlling the number of spring pieces to be cut in the prior art.

[0006] To achieve the above objectives, the present invention provides a cutting spring mold, comprising a mounting plate, a support plate and a deck plate arranged sequentially below the mounting plate, the support plate and the deck plate being movable up and down relative to the mounting plate; an upper cutting edge is provided in the middle of the mounting plate, an upwardly extending cutter holder is provided in the middle of the support plate, and an upwardly extending punch is provided in the middle of the deck plate; the top surface width of the cutter holder is greater than the width of the upper cutting edge, the interior of the cutter holder is provided with a channel extending up and down, the top end of the punch is inserted upward into the channel, the top surface width of the punch is less than the width of the upper cutting edge, and the top surface of the punch is provided with several steps that rise sequentially from left to right.

[0007] Furthermore, a lifting plate is provided between the mounting plate and the support plate, and the lifting plate can move up and down relative to the mounting plate; the lifting plate has a through hole extending vertically in the middle, and the top of the knife holder passes through the through hole upward; the bottom surface of the mounting plate has a pre-cutting groove extending front and back, and the pre-cutting groove is located below the upper blade.

[0008] Furthermore, the edge of the deck is provided with several upward-extending guide posts, and the edges of the pallet, the lifting float plate, and the mounting plate are respectively provided with several guide holes. The top of the guide post passes through the guide holes of the pallet, the lifting float plate, and the mounting plate in sequence. The top edges of the deck and the pallet are respectively provided with several height-limiting rings, and the top of the guide post passes through the height-limiting rings of the deck and the pallet in sequence.

[0009] Furthermore, the bottom edge of the mounting plate is provided with a downwardly extending first limiting post, and the edges of the lifting float plate and the pallet are respectively provided with first limiting holes. The bottom end of the first limiting post passes downward through the first limiting holes of the lifting float plate and the pallet and then connects with a first limiting ring. The outer diameter of the first limiting ring is larger than the diameter of the first limiting hole. The bottom edge of the pallet is provided with a downwardly extending second limiting post, and the edge of the deck is provided with a second limiting hole. The second limiting post passes downward through the second limiting hole and then connects with a second limiting ring. The outer diameter of the second limiting ring is larger than the inner diameter of the second limiting hole.

[0010] Furthermore, the mounting plate has several movable cavities, which are respectively located on both sides of the upper blade. The bottom of each movable cavity has a bottom hole, and the top of each movable cavity has a third spring. A floating pin is provided inside each movable cavity. The head of the floating pin is larger than the bottom hole, and the rod of the floating pin passes downward through the bottom hole and connects to the lifting floating plate. The head of the floating pin is connected to the third spring. An annular groove is provided on the side of the rod of the floating pin for placing the material strip.

[0011] Furthermore, a first spring is provided between the lifting float and the pallet, and a second spring is provided between the pallet and the deck. The maximum elastic force that can be generated between the lifting float and the pallet is less than the maximum elastic force that can be generated between the pallet and the deck.

[0012] Furthermore, the top edge of the tool holder has several protruding positioning pins, and the edge of the upper cutting edge is provided with several positioning holes, and the positioning pins and the positioning holes can be positioned and engaged.

[0013] Furthermore, the top surface of the pallet has a downwardly extending first mounting hole in the middle, and the bottom surface of the pallet has an upwardly extending second mounting hole in the middle. The first mounting hole is located at the top of the second mounting hole. The bottom end of the knife holder is installed in the second mounting hole, and the top end of the knife holder is installed in the first mounting hole. The bottom width of the knife holder is greater than the width of the first mounting hole. An anti-detachment plate is detachably installed on the bottom of the pallet.

[0014] Furthermore, the top edge of the tool holder is provided with several downwardly extending third mounting holes, and the bottom edge of the tool holder is provided with several upwardly extending fourth mounting holes. The third mounting holes are located at the top of the fourth mounting holes, the bottom end of the positioning pin is installed in the fourth mounting hole, and the top end of the positioning pin is installed in the third mounting hole; the bottom width of the positioning pin is greater than the width of the third mounting hole.

[0015] Furthermore, the mounting plate has a first opening in the middle, and an upper cutter is provided in the first opening, with the upper cutter edge located on the upper cutter; a limiting platform is provided above the upper cutter edge, and a second opening is provided in the middle of the limiting platform, the width of the second opening being greater than the width of the upper cutter edge and less than the width of the first opening, and the top surface width of the punch being less than the width of the second opening.

[0016] In summary, the technical solution of the present invention has the following beneficial effects: The structure of the present invention is reasonable, and the working principle is as follows: (1) When it is necessary to cut the spring piece on the material strip, the material strip is first placed below the mounting plate; (2) The support plate drives the knife holder to move upward, so that the top surface of the knife holder presses against the material strip, thereby fixing the material strip; (3) The plate drives the punch to move upward, and the punch passes through the channel of the knife holder and cuts with the upper blade; (4) The highest step of the punch cuts the first spring piece in the rectangular frame, and then the robot arm removes the cut first spring piece. When the second spring piece is needed, the punch moves upward a certain distance, so that the second step of the punch cuts against the first spring piece in the rectangular frame. The second spring piece in the rectangular frame is cut, and then the second spring piece is removed by the robot. The cutting principle is the same if the remaining spring pieces in the rectangular frame need to be cut. When the spring pieces no longer need to be cut, the deck drives the punch to retract downwards; (5) When the spring pieces in the rectangular frame are cut, and new spring pieces need to be cut, the deck drives the punch to retract downwards, and then the support plate drives the knife holder to move downwards. Then the material belt is moved back and forth by the external mechanical equipment, and then the support plate drives the knife holder to move upwards again, so that the top surface of the knife holder presses against the new rectangular frame; (6) Then the deck drives the punch to move upwards again and cuts the spring pieces in the rectangular frame one by one. The cutting method of other spring pieces is similar. As can be seen from the above analysis, the present invention has several steps that rise from left to right on the top surface of the punch, so that the punch only cuts one spring piece in the rectangular frame when it rises one step. The punch continues to rise a certain distance before cutting the next spring piece in the rectangular frame, thereby greatly improving the control of the number of spring pieces cut and reducing the waste of spring pieces. Attached Figure Description

[0017] Figure 1 This is an exploded structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the exploded structure of the lower half of the present invention;

[0019] Figure 3 This is an exploded structural diagram of the upper part of the present invention;

[0020] Figure 4 This is a three-dimensional structural diagram of the mounting plate and the upper cutting tool of the present invention.

[0021] Figure 5 This is a three-dimensional structural diagram of the pallet and the knife holder of the present invention when they are in contact;

[0022] Figure 6 This is a three-dimensional structural diagram of the deck and the punch when they are in contact.

[0023] Figure 7 This is a three-dimensional structural diagram of the tool holder, punch, and upper tool of the present invention when they are in conjunction.

[0024] Figure 8 This is a structural schematic diagram of the first state of the present invention;

[0025] Figure 9 This is a structural schematic diagram of the second state of the present invention from the first perspective.

[0026] Figure 10 yes Figure 9 A schematic diagram of the cross-sectional structure viewed along the CC direction.

[0027] Figure 11 This is a structural schematic diagram of the second state of the present invention from a second perspective;

[0028] Figure 12 yes Figure 11 A schematic diagram of the cross-sectional structure viewed along the DD direction.

[0029] Explanation of reference numerals in the attached drawings: 1-Mounting plate, 101-Pre-cut groove, 102-First opening, 103-Moving cavity, 104-Bottom hole; 2-Support plate, 3-Deck; 4-Upper cutter, 401-Upper cutting edge, 402-Positioning hole; 5-Cut holder, 501-Channel; 6-Punch cutter, 601-Step; 7-Lifting floating plate, 701-Through hole; 8-Guide post, 9-Guide hole, 10-Height limiting ring, 11-Second limiting post, 12-Second limiting ring, 13-First spring, 14-Second spring, 15-Positioning pin, 16-Anti-detachment plate, 17-Limiting platform, 18-Material strip, 19-Rectangular frame; 20-Floating pin, 2001-Annular groove. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention, but this does not constitute a limitation on the scope of protection of the present invention.

[0031] In this invention, for clarity, the following description is provided: The observer faces the attached... Figure 8 When conducting observations, the observer's left side is designated as left, the observer's right side as right, the area in front of the observer as front, the area behind the observer as back, the area above the observer as top, and the area below the observer as bottom. It should be noted that the terms "front end," "rear end," "left side," "right side," "middle," "above," and "below" used in this document indicate orientations or positional relationships based on the accompanying drawings. These are merely for the purpose of clearly describing the invention and do not indicate or imply that the structures or components referred to must have a specific orientation or be constructed in a specific orientation; therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," "third," and "fourth" are used only for the purpose of clarity or simplification of description and should not be construed as indicating or implying relative importance or quantity.

[0032] See Figures 1 to 8This embodiment provides a cutting mold for spring strips, including a mounting plate 1. A support plate 2 and a deck plate 3 are sequentially arranged below the mounting plate 1. The support plate 2 and deck plate 3 can move up and down relative to the mounting plate 1. An upper cutting edge 401 is provided in the middle of the mounting plate 1, a cutting block 5 extending upwards is provided in the middle of the support plate 2, and a punch 6 extending upwards is provided in the middle of the deck plate 3. The top surface width of the cutting block 5 is greater than the width of the upper cutting edge 401. Its function is to prevent the cutting block from entering the upper cutting edge, allowing the top surface of the cutting block and the bottom surface of the mounting plate to apply a clamping force to the rectangular frame of the material strip together. The cutting block 5 has a vertically extending channel 501 inside. The top tip of the punch 6 is inserted upwards into the channel 501. The top surface width of the punch 6 is less than the width of the upper cutting edge 401. Its function is to allow the punch to enter the upper cutting edge upwards, thereby enabling the punch to cooperate with the upper cutting edge to cut the spring strip. The top surface of the punch 6 is provided with several steps 601 that rise sequentially from left to right. In actual operation: since the rightmost step is the highest and the leftmost step is the lowest, the rightmost spring piece in the rectangular frame will be cut first and the leftmost spring piece will be cut later during the upward movement of the punch. Working principle: (1) When it is necessary to cut the spring piece on the material strip, the material strip is placed below the mounting plate; (2) The support plate drives the knife holder to move upward, so that the top surface of the knife holder presses against the material strip, thereby fixing the material strip; (3) The plate drives the punch to move upward, and the punch passes through the channel of the knife holder and cuts with the upper blade; (4) The highest step of the punch cuts the first spring piece in the rectangular frame, and then the robot arm is used to remove the cut first spring piece. When the second spring piece is needed, the punch moves upward a distance, so that the second step of the punch cuts the second spring piece in the rectangular frame, and then the robot arm is used to remove the cut first spring piece. The robotic arm then removes the second spring piece. If the remaining spring pieces in the rectangular frame need to be cut, the cutting principle is the same. When the spring pieces no longer need to be cut, the deck drives the punch to retract downwards. (5) When the spring pieces in the rectangular frame are cut, and new spring pieces need to be cut, the deck drives the punch to retract downwards, and then the support plate drives the knife holder to move downwards. Then, the material belt is moved back and forth by external mechanical equipment, and then the support plate drives the knife holder to move upwards again, so that the top surface of the knife holder presses against the new rectangular frame. (6) Then the deck drives the punch to move upwards again and cuts the spring pieces in the rectangular frame one by one. The cutting method of other spring pieces is similar. As can be seen from the above analysis, the present invention has several steps that rise from left to right on the top surface of the punch, so that the punch only cuts one spring piece in the rectangular frame when it rises one step. The punch continues to rise a certain distance before cutting the next spring piece in the rectangular frame, thereby greatly improving the control of the number of spring pieces cut and reducing the waste of spring pieces.

[0033] Specifically, a lifting plate 7 is provided between the mounting plate 1 and the support plate 2. The lifting plate 7 can move up and down relative to the mounting plate 1. The lifting plate 7 has a through hole 701 extending vertically in the middle, and the top of the cutter holder 5 passes through the through hole 701 upward. The bottom surface of the mounting plate 1 has a pre-cutting groove 101 extending front and back. The pre-cutting groove 101 is located below the upper cutter 401. Its function is to lift the material strip, so that the material strip is pre-fixed in the pre-cutting groove, which facilitates the subsequent pressing and fixing of the rectangular frame of the material strip by the cutter holder.

[0034] Specifically, the edge of the deck 3 is provided with several upward-extending guide posts 8, and the edges of the pallet 2, the lifting float 7, and the mounting plate 1 are respectively provided with several guide holes 9. The top of the guide post 8 passes through the guide holes 9 of the pallet 2, the lifting float 7, and the mounting plate 1 in sequence. Its function is to ensure that the movement direction between the deck and the pallet, the lifting float 7, and the mounting plate is consistent through the guiding cooperation of the guide post and the guide hole. Specifically, the top edges of the deck 3 and the pallet 2 are respectively provided with several height limiting rings 10. The top of the guide post 8 passes through the height limiting rings 10 of the deck 3 and the pallet 2 in sequence. Its function is to limit the minimum interval between the pallet and the deck, and between the pallet and the lifting float 7, by setting the height limiting rings.

[0035] Specifically, the bottom edge of the mounting plate 1 is provided with a downwardly extending first limiting post, and the edges of the lifting float plate 7 and the pallet 2 are respectively provided with first limiting holes. The bottom end of the first limiting post passes downward through the first limiting holes of the lifting float plate 7 and the pallet 2 and then connects with a first limiting ring. The outer diameter of the first limiting ring is larger than the diameter of the first limiting hole. Its function is to limit the maximum gap between the mounting plate and the pallet by setting the first limiting post. The bottom edge of the pallet 2 is provided with a downwardly extending second limiting post 11, and the edge of the deck 3 is provided with a second limiting hole. The second limiting post 11 passes downward through the second limiting hole and then connects with a second limiting ring 12. The outer diameter of the second limiting ring 12 is larger than the inner diameter of the second limiting hole. Its function is to limit the maximum gap between the pallet and the deck by setting the second limiting post.

[0036] Specifically, see Figures 9 to 12The mounting plate 1 has several movable cavities 103, which are respectively located on both sides of the upper blade 401, preferably four movable cavities 103, which are respectively located at the four included angles of the upper blade 401. The bottom of the movable cavity 103 has a bottom hole 104, and the top of the movable cavity 103 has a third spring (not shown in the figure). The movable cavity 103 has a floating pin 20, the head of the floating pin 20 is larger than the bottom hole 104, the rod of the floating pin 20 passes downward through the bottom hole 104 and connects to the lifting floating plate 7, and the head of the floating pin 20 is connected to the third spring. The side of the rod of the floating pin 20 has an annular groove 2001, which is used to place the material strip 18. In actual operation: the two sides of the material strip 18 are respectively located in the annular grooves 2001 of the lifting pins 20 on both sides. As the lifting plate 7 is lifted upward by the force below, the lifting pins 20 will also be pushed upward. At this time, the third spring is in a compressed state, and the material strip 18 is also pressed between the lifting plate 7 and the mounting plate 1. When the spring piece in the rectangular frame 19 is cut, the force below the lifting plate 7 is removed, and the third spring pushes the lifting pins 20 downward through the elastic force. The lifting plate 7 is pushed downward by the lifting pins 20. At this time, the third spring is in an unfolded state, and the material strip 18 is no longer pressed between the lifting plate 7 and the mounting plate 1, so that the material strip 18 can move forward and replace the rectangular frame 19 for cutting work. Preferably, the top of the movable cavity 103 is open, but it needs to be covered by the limiting platform 17. This facilitates the insertion of the buoyancy pin 20 into the movable cavity 103 while ensuring that the second spring has a force-bearing point above it. In other words, it is best to place the third spring between the buoyancy pin 20 and the limiting platform 17. More preferably, the top surface of the lifting buoyancy plate 7 is provided with mounting holes for mounting the rod of the buoyancy pin 20.

[0037] Specifically, a first spring 13 is provided between the lifting floating plate 7 and the support plate 2, and a second spring 14 is provided between the support plate 2 and the deck 3. The maximum elastic force that can be generated between the lifting floating plate 7 and the support plate 2 is less than the maximum elastic force that can be generated between the support plate 2 and the deck 3. The significance of this arrangement is that a servo motor can be set below the deck as a drive mechanism to complete the drive of the entire mold. That is to say, when the servo motor below the deck drives the deck to move upward, the lifting floating plate first contacts and engages with the mounting plate to pre-fix the material strip. Then, due to the difference in maximum elastic force, the first spring is compressed first, causing the support plate to move upward, which in turn drives the cutter holder to move upward to fix the rectangular frame of the material strip. Then the second spring is compressed, allowing the punch to cut the spring pieces in the rectangular frame one by one. Specifically, there are two first springs and four second springs.

[0038] Specifically, the top edge of the cutter holder 5 has several positioning pins 15 protruding from it, and the edge of the upper cutter 401 has several positioning holes 402. The positioning pins 15 and the positioning holes 402 can be positioned and engaged. Function: Since the four corners of the rectangular frame of the material strip are provided with positioning holes in actual operation, the positioning pins can be positioned and engaged with the positioning holes of the material strip and the positioning holes of the mounting plate to position the rectangular frame.

[0039] Specifically, the top surface of the tray 2 has a downward-extending first mounting hole in the middle, and the bottom surface of the tray 2 has an upward-extending second mounting hole in the middle. The first mounting hole is located at the top of the second mounting hole. The bottom end of the knife holder 5 is installed in the second mounting hole, and the top end of the knife holder 5 is installed in the first mounting hole. The bottom width of the knife holder 5 is greater than the width of the first mounting hole. The bottom of the tray 2 is detachably equipped with an anti-detachment plate 16. Its function is to open the anti-detachment plate when it is necessary to pull the knife holder out from under the tray or insert it.

[0040] Specifically, the top edge of the tool holder 5 is provided with several downward-extending third mounting holes, and the bottom edge of the tool holder 5 is provided with several upward-extending fourth mounting holes. The third mounting holes are located at the top of the fourth mounting holes, the bottom end of the positioning pin 15 is installed in the fourth mounting hole, and the top end of the positioning pin 15 is installed in the third mounting hole. The bottom width of the positioning pin 15 is greater than the width of the third mounting hole. Its function is to open the anti-dislodgement plate when it is necessary to pull the positioning pin out from under the tool holder or insert it.

[0041] Specifically, the mounting plate 1 has a first opening 102 in the middle, and an upper cutter 4 is provided in the first opening 102. An upper cutting edge 401 is provided on the upper cutter 4. A limiting platform 17 is provided above the upper cutting edge 401. A second opening is provided in the middle of the limiting platform 17. The width of the second opening is greater than the width of the upper cutting edge 401 and less than the width of the first opening 102. The top surface width of the punch 6 is less than the width of the second opening. Function: By setting the limiting platform and its second opening, an external robot arm can enter the upper cutting edge through the second opening to remove the cut piece, while the upper cutter cannot pass through the second opening upwards, thereby restricting the upward movement of the upper cutter.

[0042] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A cutting spring die, comprising a mounting plate (1), characterized in that: Below the mounting plate (1) are arranged a support plate (2) and a deck (3), which can move up and down relative to the mounting plate (1); the mounting plate (1) has an upper cutting edge (401) in the middle, the support plate (2) has an upwardly extending cutter seat (5) in the middle, and the deck (3) has an upwardly extending punch (6) in the middle; the top surface width of the cutter seat (5) is greater than the width of the upper cutting edge (401), the inside of the cutter seat (5) has a channel (501) extending up and down, the top of the punch (6) is inserted into the channel (501) upward, the top surface width of the punch (6) is less than the width of the upper cutting edge (401), and the top surface of the punch (6) has several steps (601) that rise from left to right. A lifting plate (7) is provided between the mounting plate (1) and the support plate (2), and the lifting plate (7) can move up and down relative to the mounting plate (1); the lifting plate (7) has a through hole (701) extending up and down in the middle, and the top of the knife holder (5) passes through the through hole (701) upward; the bottom surface of the mounting plate (1) has a pre-cutting groove (101) extending forward and backward, and the pre-cutting groove (101) is located below the upper knife edge (401); The bottom edge of the mounting plate (1) is provided with a first limiting post extending downwards. The edges of the lifting float plate (7) and the pallet (2) are respectively provided with first limiting holes. The bottom end of the first limiting post passes downwards through the first limiting holes of the lifting float plate (7) and the pallet (2) and is connected to the first limiting ring. The outer diameter of the first limiting ring is greater than the diameter of the first limiting hole. The bottom edge of the pallet (2) is provided with a second limiting post (11) extending downwards. The edge of the deck (3) is provided with a second limiting hole. The second limiting post (11) passes downwards through the second limiting hole and is connected to the second limiting ring (12). The outer diameter of the second limiting ring (12) is greater than the inner diameter of the second limiting hole.

2. The spring-cutting mold according to claim 1, characterized in that: The edge of the deck (3) is provided with several upward-extending guide posts (8), and the edges of the pallet (2), the lifting float plate (7), and the mounting plate (1) are respectively provided with several guide holes (9). The top of the guide post (8) passes upward through the guide holes (9) of the pallet (2), the lifting float plate (7), and the mounting plate (1); the top edges of the deck (3) and the pallet (2) are respectively provided with several height-limiting rings (10), and the top of the guide post (8) passes upward through the height-limiting rings (10) of the deck (3) and the pallet (2).

3. The spring-cutting mold according to claim 1, characterized in that: The mounting plate (1) has several movable cavities (103), which are respectively located on both sides of the upper blade (401). The bottom of each movable cavity (103) has a bottom hole (104), and the top of each movable cavity (103) has a third spring. A floating pin (20) is provided in the movable cavity (103). The head of the floating pin (20) is larger than the bottom hole (104). The rod of the floating pin (20) passes downward through the bottom hole (104) and connects to the lifting floating plate (7). The head of the floating pin (20) is connected to the third spring. The side of the rod of the floating pin (20) has an annular groove (2001), which is used to place the material strip (18).

4. A cutting die for springs according to any one of claims 1 to 3, characterized in that: A first spring (13) is provided between the lifting float (7) and the pallet (2), and a second spring (14) is provided between the pallet (2) and the deck (3). The maximum elastic force that can be generated between the lifting float (7) and the pallet (2) is less than the maximum elastic force that can be generated between the pallet (2) and the deck (3).

5. A cutting die for springs according to any one of claims 1 to 3, characterized in that: The top edge of the blade holder (5) has several positioning pins (15) protruding from it, and the edge of the upper blade (401) has several positioning holes (402). The positioning pins (15) and the positioning holes (402) can be positioned and engaged.

6. The spring-cutting mold according to claim 5, characterized in that: The top surface of the tray (2) is provided with a downwardly extending first mounting hole in the middle, and the bottom surface of the tray (2) is provided with an upwardly extending second mounting hole in the middle. The first mounting hole is located at the top of the second mounting hole. The bottom end of the knife holder (5) is installed in the second mounting hole, and the top end of the knife holder (5) is installed in the first mounting hole. The bottom width of the knife holder (5) is greater than the width of the first mounting hole. The bottom of the tray (2) is detachably equipped with an anti-detachment plate (16).

7. The spring-cutting mold according to claim 6, characterized in that: The top edge of the tool holder (5) is provided with several downwardly extending third mounting holes, and the bottom edge of the tool holder (5) is provided with several upwardly extending fourth mounting holes. The third mounting holes are located at the top of the fourth mounting holes. The bottom end of the positioning pin (15) is installed in the fourth mounting hole, and the top end of the positioning pin (15) is installed in the third mounting hole. The bottom width of the positioning pin (15) is greater than the width of the third mounting hole.

8. A cutting die for springs according to any one of claims 1 to 3, 6 to 7, characterized in that: The mounting plate (1) has a first opening (102) in the middle, and an upper cutter (4) is provided in the first opening (102). The upper cutting edge (401) is provided on the upper cutter (4). A limiting platform (17) is provided above the upper cutting edge (401). A second opening is provided in the middle of the limiting platform (17). The width of the second opening is greater than the width of the upper cutting edge (401) and less than the width of the first opening (102). The top surface width of the punch (6) is less than the width of the second opening.

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