Stamping die and its feeding mechanism

Abstract

The present application provides a stamping die and a feeding mechanism thereof, the feeding mechanism comprising a trapezoidal insert, two sides of which are provided with outer inclined surfaces; a roller, the trapezoidal insert being provided with a cavity for accommodating the roller, a part of the roller being exposed from the outer inclined surfaces; a fork-shaped insert, a side surface of the fork-shaped insert facing the trapezoidal insert being provided with a trapezoidal groove, an inner inclined surface being provided on an inner wall of the trapezoidal groove; a ejector rod, capable of penetrating through the fork-shaped insert and abutting against the trapezoidal insert; the trapezoidal insert and the fork-shaped insert being arranged alternately and in a straight line, the trapezoidal insert and the fork-shaped insert being internally provided with a feeding hole for strip-shaped material to pass through, the arrangement direction of the trapezoidal insert and the fork-shaped insert being perpendicular to the axis direction of the roller; the cavity being provided with a central hole in communication with the feeding hole, the inner inclined surface being capable of contacting and extruding the roller, driving the roller to move and clamping the strip-shaped material from the central hole; an end of the trapezoidal insert facing the bottom surface of the trapezoidal groove of the adjacent fork-shaped insert abutting against the ejector rod. In this way, the strip-shaped material can be stably clamped and fed, and accurate feeding is ensured.

Description

Technical Field

[0001] This invention relates to the field of stamping die technology, and more specifically to stamping dies and their feeding mechanisms. Background Technology

[0002] Applying a layer of silver to the conductive contact area of ​​a conductive copper busbar is a common process in the power and electrical fields to improve contact performance, thereby optimizing conductivity reliability and service life.

[0003] Currently, attaching silver sheets to conductive copper busbars typically involves first stamping the copper busbars, and then attaching the silver sheets using specialized crimping equipment. To improve production efficiency, the applicant intends to integrate the silver sheet crimping process into the stamping process of the product, completing it synchronously. Therefore, a feeding mechanism capable of reliably feeding the silver sheets into the stamping die is required. Traditional feeding mechanisms also suffer from significant compatibility issues; for example, cylinder-driven feeding mechanisms may experience material leakage during a single feed. Furthermore, the connection between the feeding mechanism and the die may lack coordinated control, often resulting in positioning errors due to misalignment between the feeding rhythm and the die closing timing, severely impacting processing consistency. These problems restrict the efficiency and quality stability of large-scale production. Summary of the Invention

[0004] This application is made in view of the aforementioned state of the prior art. The purpose of this application is to provide a stamping die and its feeding mechanism.

[0005] On the one hand, the stamping die feeding mechanism used in this application includes: a trapezoidal insert with external inclined surfaces on both sides;

[0006] The roller, wherein the trapezoidal insert has a cavity for accommodating the roller, and a portion of the roller is exposed from the outer inclined surface;

[0007] The fork-shaped insert has a trapezoidal groove on one side of its surface facing the trapezoidal insert. The inner walls of the trapezoidal groove have inner inclined surfaces, which make the width of the trapezoidal groove gradually increase from the bottom surface of the trapezoidal groove to the opening.

[0008] The push rod can pass through the forked insert and abut against the trapezoidal insert;

[0009] There are two trapezoidal inserts and two fork-shaped inserts. The trapezoidal inserts and fork-shaped inserts are arranged alternately along a straight line. The trapezoidal inserts and fork-shaped inserts have feeding holes for the strip material to pass through. The arrangement direction of the trapezoidal inserts and fork-shaped inserts is perpendicular to the axis of the roller.

[0010] The cavity has a central hole that communicates with the feeding hole, and the inner inclined surface can contact and squeeze the roller, drive the roller to move and clamp the strip material from the central hole;

[0011] The end of the trapezoidal insert facing the bottom surface of the trapezoidal groove of the adjacent fork-shaped insert abuts against the top rod;

[0012] The trapezoidal insert has a receiving cavity at one end away from the adjacent forked insert. The receiving cavity contains a compression spring, and the end of the compression spring away from the trapezoidal insert contacts a push block.

[0013] As a further improvement of the present invention, the outer wall of each trapezoidal insert includes two outer inclined surfaces that are distributed in a mirror symmetry, and each fork-shaped insert includes two inner inclined surfaces that are distributed in a mirror symmetry, wherein the outer inclined surfaces are parallel to the adjacent inner inclined surfaces; each trapezoidal insert is movably equipped with two rollers that are arranged in a mirror symmetry and are parallel to each other.

[0014] As a further improvement of the present invention, there are two top rods, which are symmetrically distributed on both sides of the strip material. The arrangement direction of the trapezoidal inserts and the forked inserts is parallel to the length direction of the top rods. The top rod includes a first round rod segment and a second round rod segment. The diameter of the first round rod segment is larger than the diameter of the second round rod segment. The junction of the first round rod segment and the second round rod segment can abut against a trapezoidal insert, and the end of the second round rod segment away from the first round rod segment can abut against another trapezoidal insert.

[0015] As a further improvement of the present invention, the surface of the roller includes circumferential grooves, each roller includes two circumferential grooves, the two circumferential grooves divide the roller into three cylindrical segments, the cylindrical segment located at the center of the roller can be pressed into contact with the strip material; the push rod can pass through the circumferential grooves without contacting the inner wall of the circumferential grooves; the roller has rotational freedom about its own axis within the cavity.

[0016] As a further improvement of the present invention, the trapezoidal insert includes a first trapezoidal insert and a second trapezoidal insert, the fork-shaped insert includes a first fork-shaped insert and a second fork-shaped insert, and the push block includes a first push block and a second push block. The first fork-shaped insert, the first trapezoidal insert, the first push block, the second fork-shaped insert, the second trapezoidal insert, and the second push block are arranged sequentially along a straight line.

[0017] As a further improvement of the present invention, it also includes a frame block, in which a first slider seat, a second slider seat, and a third slider seat are installed. The first slider seat and the third slider seat have the freedom to reciprocate along the feeding direction within the frame block. The second slider seat is fixedly installed on the frame block. It also includes a first insert knife and a second insert knife driven synchronously. The linear motion direction of the first insert knife is perpendicular to the movement direction of the first slider seat, and the linear motion direction of the second insert knife is perpendicular to the movement direction of the third slider seat. The first insert knife abuts against the first slider seat through an inclined surface, and the second insert knife abuts against the third slider seat through an inclined surface. A first fork-shaped insert, a first trapezoidal insert, and a first push block are installed on the first slider seat. A second fork-shaped insert, a second trapezoidal insert, and a second push block are installed on the second slider seat. The end of the push rod abuts against the third slider seat.

[0018] As a further improvement of the present invention, the end of the first insert includes a first inclined surface, the side of the first insert includes a second inclined surface, and the end of the second insert includes a third inclined surface. The first, second, and third inclined surfaces are all located on the opposing surfaces of the first and second inserts. The first and second inclined surfaces are parallel to each other. The first slider seat includes a fourth inclined surface. When the first insert moves forward, the first and second inclined surfaces can slide and contact the fourth inclined surface successively.

[0019] As a further improvement of the present invention, the third slider seat includes a fifth inclined surface. When the second inserter moves forward, the third inclined surface can slide and contact the fifth inclined surface. When the first inserter and the second inserter move forward synchronously, the first inclined surface contacts the fourth inclined surface first.

[0020] As a further improvement of the present invention, the bottom of the first slider seat is provided with a plurality of arc-shaped grooves, the cross-sectional profile of the arc-shaped grooves is an arc shape, the axis of the arc-shaped grooves is horizontal, and a roller is provided in the arc-shaped grooves, the roller having a degree of rotational freedom about its own axis.

[0021] On the other hand, a stamping die includes the aforementioned feeding mechanism.

[0022] The beneficial technical effects of using the feeding mechanism of this application are:

[0023] The fork-shaped and trapezoidal inserts can approach and separate from each other. By having the inner inclined surface of the fork-shaped insert contact and squeeze the roller inside the cavity of the trapezoidal insert, the roller clamps the strip material through the central hole connected to the feed port. The cooperation between the roller and the inner and outer inclined surfaces allows the clamping force to be applied evenly to the material, avoiding the problem of material leakage in a single feed caused by unstable clamping in traditional feeding mechanisms, and effectively improving the reliability of feeding.

[0024] Both the trapezoidal and fork-shaped inserts have internal feeding holes for strip materials to pass through, and the rollers clamp the material by extrusion without the need for a fixed track gauge. For strip materials of different cross-sectional sizes, as long as they can pass through the feeding holes, the rollers can be adjusted in position to fit and clamp them, eliminating the need for frequent changes to the track assembly, significantly reducing downtime for adjustments, and improving the mechanism's compatibility with strip materials of different specifications.

[0025] By using the push rod to abut against the trapezoidal insert, moving away from the fork-shaped insert, the clamping effect of the roller on the strip material is released, ensuring that it does not interfere with the punching and pressing action of the stamping die on the strip material, improving the coordination with the timing of the die closure, and ensuring processing consistency. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a perspective view in cross-section of one embodiment of the feeding mechanism of the present invention.

[0028] Figure 2 This is an exploded cross-sectional view of one embodiment of the feeding mechanism of the present invention.

[0029] Figure 3 This is a partial perspective view in cross-section of one embodiment of the feeding mechanism of the present invention.

[0030] Figure 4 This is a partial perspective view in cross-section of one embodiment of the feeding mechanism of the present invention.

[0031] Figure 5 This is a partial perspective view in cross-section of one embodiment of the feeding mechanism of the present invention.

[0032] Figure 6 This is a perspective view of the compression spring, trapezoidal insert, roller, and push block in cross-section of one embodiment of the feeding mechanism of the present invention.

[0033] Figure 7 This is a perspective view of the trapezoidal insert and pusher block in cross-section of one embodiment of the feeding mechanism of the present invention.

[0034] Figure 8 This is a perspective view of the first trapezoidal insert and the second trapezoidal insert in cross-section of one embodiment of the feeding mechanism of the present invention.

[0035] Figure 9 This is a perspective view of the first slider seat and the second slider seat in cross-section of one embodiment of the feeding mechanism of the present invention.

[0036] Figure 10 This is a perspective view of the third slider seat, end insert, and transverse stop bar in cross-section of one embodiment of the feeding mechanism of the present invention.

[0037] Figure 11 This is a perspective view of one embodiment of the feeding mechanism of the present invention.

[0038] Figure 12 This is a partial perspective view of one embodiment of the feeding mechanism of the present invention.

[0039] Figure 13 This is a schematic diagram of the feeding mechanism when the stamping die is in the closed state.

[0040] Figure 14 This is a schematic diagram of the feeding mechanism after the stamping die is opened and the second insert cutter separates from the third slide block.

[0041] Figure 15 This is a schematic diagram of the feeding mechanism after the stamping die is opened and the first insert cutter separates from the first slider seat.

[0042] Figure 16 This is a schematic diagram of the feeding mechanism after the first insert cutter engages with the first slider seat during the die closing process of a stamping die.

[0043] Explanation of reference numerals in the attached figures:

[0044] 1-Pressure block; 2-First insert; 201-First ramp; 202-Second ramp; 3-First slider seat; 301-First outwardly protruding slider; 302-First receiving channel; 303-Arch-shaped groove; 304-Fourth ramp; 305-Second return spring; 4-Compression spring; 5-Trapezoidal insert; 51-First trapezoidal insert; 52-Second trapezoidal insert; 501-Cavity; 502-Receiving cavity; 503-First feeding hole; 504-Outer ramp; 505-Connecting hole; 506-First through hole; 507-Central hole; 6-Fork-shaped insert; 61-First fork-shaped insert; 62-Second fork-shaped insert; 601-Inner ramp; 602-Positioning groove; 7-Roller; 701-Cylindrical section; 702-Circumferential groove; 8-Baffle; 9-Second insert; 901-Third ramp; 10-Third slider seat; 1001-Fifth ramp; 1002-First material passage hole; 1003-First return spring; 11-Top rod; 1101-First round rod segment; 1102-Second round rod segment; 12-Strip material; 13-Frame block; 1301-Inlet / outlet; 13011-Guide groove; 14-Second slider seat; 1401-Second outwardly protruding slider; 1402-Second receiving channel; 15-End insert; 16-Transverse baffle; 1601-Second material passage hole; 17-Push block; 171-First push block; 172-Second push block; 1701-Second feeding hole; 1702-Through hole. Detailed Implementation

[0045] Exemplary embodiments of this application are described below with reference to the accompanying drawings. It should be understood that these specific descriptions are for teaching those skilled in the art how to implement this application only, and are not intended to exhaustively describe all possible methods of this application, nor to limit the scope of this application.

[0046] See Figures 1 to 12 The embodiments of this application provide a stamping die feeding mechanism, including: as follows Figure 6 As shown, the trapezoidal insert 5 has outer inclined surfaces 504 on both sides. Figure 6 , Figure 7 As shown, the roller 7 and the trapezoidal insert 5 have a cavity 501 to accommodate the roller 7, and a portion of the roller 7 protrudes from the outer inclined surface 504. The fork-shaped insert 6 has a trapezoidal groove on the side surface facing the trapezoidal insert, as shown... Figure 4 As shown, the inner walls of both sides of the trapezoidal groove have inner inclined surfaces 601, which make the width of the trapezoidal groove gradually increase from the bottom surface to the opening. The push rod 11 can pass through the fork-shaped insert 6 and abut against the trapezoidal insert 5. There are two trapezoidal inserts 5 and two fork-shaped inserts 6, arranged alternately along a straight line. The trapezoidal inserts 5 and fork-shaped inserts 6 have feeding holes for the strip material 12 to pass through. The arrangement direction of the trapezoidal inserts 5 and fork-shaped inserts 6 is perpendicular to the axis of the roller 7. The cavity 501 has a central hole 507 communicating with the feeding hole, as shown... Figure 5 As shown, the inner inclined surface 601 can contact and squeeze the roller 7, causing the roller 7 to move and clamp the strip material 12 from the central hole 507. The end of the trapezoidal insert facing the bottom surface of the trapezoidal groove of the adjacent fork-shaped insert abuts against the top rod 11.

[0047] The strip material 12 can be a front extension of the silver strip that is unwound, extended, and straightened from the silver strip winding. The front extension has a rectangular cross-section, is cut into silver sheets in a stamping die, and is directly pressed into the silver sheet bonding area of ​​the conductive copper busbar in the stamping die.

[0048] To clearly demonstrate the internal structure, Figures 1 to 10 Both are 3D views after partial sectional view, but at the same time Figures 1 to 10 The compression spring 4, roller 7, push rod 11, and strip material 12 were not partially removed. Figure 11 and Figure 12 It is in a partially dissected state. Figure 1 It can be seen as Figure 11 The effect after partial cross-section. To clearly demonstrate the internal structure, Figure 1 , Figure 3 , Figure 5 , Figure 6 , Figure 7 , Figure 8 It is a three-dimensional image after the layers are gradually peeled away.

[0049] The beneficial effects of adopting the above technical solution are as follows: the trapezoidal insert 5 and the fork-shaped insert 6 are arranged alternately and have feeding holes inside. Combined with the inner inclined surface 601 of the fork-shaped insert 6 pressing the roller 7 inside the cavity 501 of the trapezoidal insert 5, the roller 7 can stably clamp the strip material 12 from the central hole 507, avoiding the material leakage problem of traditional mechanisms. The clamping method of the roller 7 does not require a fixed track gauge and is unaffected by the thickness of the strip material 12, adapting to strip materials 12 with different cross-sectional dimensions, reducing downtime for track replacement. By abutting the trapezoidal insert 5 with the push rod 11, moving it away from the fork-shaped insert 6, the clamping effect of the roller 7 on the strip material 12 is released, ensuring that it does not interfere with the punching and pressing action of the stamping die on the strip material 12, improving the coordination with the die closing timing, and ensuring processing consistency.

[0050] In other embodiments of the invention, the outer wall of each trapezoidal insert includes two mirror-symmetrically distributed outer inclined surfaces 504, and each fork-shaped insert includes two mirror-symmetrically distributed inner inclined surfaces 601, with the outer inclined surfaces 504 parallel to the adjacent inner inclined surfaces 601. Each trapezoidal insert is movably fitted with two mirror-symmetrically arranged and parallel rollers 7. The trapezoidal insert includes a first trapezoidal insert 51 and a second trapezoidal insert 52, and the fork-shaped insert includes a first fork-shaped insert 61 and a second fork-shaped insert 62. Figure 5 , Figure 7 As shown, the first forked insert 61, the first trapezoidal insert 51, the second forked insert 62, and the second trapezoidal insert 52 are arranged sequentially along a straight line.

[0051] The beneficial effects of adopting the above technical solution are as follows: the outer inclined surface 504 of the trapezoidal insert 5 and the inner inclined surface 601 of the fork-shaped insert 6 are parallel to each other, which makes the squeezing force of the inner inclined surface 601 on the roller 7 more uniform and avoids the roller 7 from being deviated by force. Each trapezoidal insert 5 is equipped with two symmetrical parallel rollers 7, which can clamp the strip material 12 from both sides in a balanced manner and prevent skewing during feeding. The sequential arrangement of the first fork-shaped insert 61, the first trapezoidal insert 51, the second fork-shaped insert 62, and the second trapezoidal insert 52 makes the feeding path continuous and the position of each component stable, further improving the stability of the feeding process.

[0052] like Figure 5 As shown, in some embodiments of the present invention, there are two push rods 11, symmetrically distributed on both sides of the strip material 12. The arrangement direction of the trapezoidal inserts and forked inserts is parallel to the length direction of the push rods 11. The push rod 11 includes a first round rod segment 1101 and a second round rod segment 1102, wherein the diameter of the first round rod segment 1101 is larger than the diameter of the second round rod segment 1102. The junction of the first round rod segment 1101 and the second round rod segment 1102 can abut against a trapezoidal insert, and the end of the second round rod segment 1102 away from the first round rod segment 1101 can abut against another trapezoidal insert.

[0053] The beneficial effects of adopting the above technical solution are as follows: Two push rods 11 are symmetrically distributed on both sides of the strip material 12, which can balance the trapezoidal inserts 5 from both sides, avoiding the trapezoidal inserts 5 from shifting due to force on one side. The first round rod segment 1101 and the second round rod segment 1102 of the push rod 11 have different diameters. Their junction can stably abut one trapezoidal insert 5, and the end of the second round rod segment 1102 can abut the other trapezoidal insert 5, realizing the synchronous pushing of two trapezoidal inserts 5 by one push rod, ensuring the synchronicity of the release of the pressure between the trapezoidal inserts 5 and the forked inserts 6.

[0054] like Figure 5 As shown, the diameter of the first round rod segment 1101 of the top rod 11 is larger than the diameter of the second round rod segment 1102. At the junction of the first round rod segment 1101 and the second round rod segment 1102, there is a shoulder portion perpendicular to the axis of the top rod 11, i.e., a stepped surface.

[0055] like Figure 6 As shown, in some other embodiments of the invention, the surface of the roller 7 includes circumferential grooves 702, each roller 7 including two circumferential grooves 702, the two circumferential grooves 702 dividing the roller 7 into three cylindrical segments 701, the cylindrical segment 701 located at the center of the roller 7 being able to make compressive contact with the strip material 12. The push rod 11 can pass through the circumferential grooves 702 without contacting the inner wall of the circumferential grooves 702. The roller 7 has rotational freedom about its own axis within the cavity 501.

[0056] The beneficial effects of adopting the above technical solution are as follows: the circumferential groove 702 of the roller 7 can avoid the push rod 11, ensuring that the push rod 11 does not rub against the inner wall of the roller 7 when passing through, and does not interfere with the clamping action of the roller 7. The central cylindrical section 701 separated by the two circumferential grooves 702 can accurately press against the strip material 12. The rotational freedom of the roller 7 in the cavity 501 can convert the sliding friction during feeding into a certain rolling friction, thereby reducing scratches on the surface of the strip material 12 and making feeding smoother.

[0057] like Figure 6 , Figure 8 As shown, in some other embodiments of the present invention, the end of the trapezoidal insert opposite to the adjacent forked insert has a receiving cavity 502, the receiving cavity 502 containing a compression spring 4, and the end of the compression spring 4 opposite to the trapezoidal insert contacting a push block 17. For example... Figure 1 , Figure 2 As shown, the push block 17 is fixed to the slider seat, and the slider seat can abut against the insert knife through the mating inclined surface. The linear motion direction of the insert knife and the linear motion direction of the slider seat are at an angle to each other.

[0058] The beneficial effects of the above technical solution are as follows: the compression spring 4 provides unidirectional elastic potential energy for the movement of the trapezoidal insert 5 towards the fork-shaped insert 6, causing the inner inclined surface 601 of the fork-shaped insert 6 to squeeze the roller 7 and thus clamp the strip material. The push block 17 and the fork-shaped insert 6 are fixed on the slider seat at the same time, and the trapezoidal insert 5 has the freedom to move back and forth along the feeding direction within the slider seat. The slider seat is connected to the inserter by means of the mating inclined surface, which can convert the linear motion of the inserter into the moving power of the slider seat, the push block 17 and the fork-shaped insert 6. When the slider seat drives the fork-shaped insert 6 to move away from the trapezoidal insert 5, the inner inclined surface 601 of the fork-shaped insert 6 releases the squeezing force on the roller 7, and the roller 7 releases the strip material and moves in a straight line relative to the strip material, thereby changing the clamping position on the strip material so that the strip material can be fed to a set length when the slider seat is reset.

[0059] like Figure 1 , Figure 2 , Figure 7 As shown, in some embodiments of the present invention, the pusher block 17 includes a first pusher block 171 and a second pusher block 172. The slider seat includes a first slider seat 3 and a second slider seat 14. The first fork-shaped insert 61, the first trapezoidal insert 51, the first pusher block 171, the second fork-shaped insert 62, the second trapezoidal insert 52, and the second pusher block 172 are arranged sequentially in a straight line. The first fork-shaped insert 61, the first trapezoidal insert 51, and the first pusher block 171 are installed in the first slider seat 3, wherein the first fork-shaped insert 61 and the first pusher block 171 are fixedly installed with respect to the first slider seat 3, and the first trapezoidal insert 51 has the freedom to reciprocate along the feeding direction in the first slider seat 3. The second forked insert 62, the second trapezoidal insert 52, and the second push block 172 are installed inside the second slider seat 14. The second forked insert 62 and the second push block 172 are fixedly installed with the second slider seat 14, while the second trapezoidal insert 52 has the freedom to reciprocate along the feeding direction in the second slider seat 14.

[0060] like Figure 7 As shown, in one embodiment, the first trapezoidal insert 51 has a first through hole 506 through which the second round rod segment 1102 of the push rod 11 moves, and the first push block 171 has a through hole 1702 through which the second round rod segment 1102 of the push rod 11 moves. The second trapezoidal insert 52 does not have a first through hole 506 at the corresponding position. The second trapezoidal insert 52 is solid at the corresponding position and abuts against the shaft end of the second round rod segment 1102.

[0061] like Figure 2 , Figure 3 , Figure 10As shown, in some embodiments of the present invention, one end of the push rod 11 abuts against a third slider seat 10, the third slider seat 10 including a fifth inclined surface 1001. The insert includes a synchronously driven first insert 2 and a second insert 9, the first insert 2 and the second insert 9 together being fixed to a pressure block 1, which is driven by a linear power component. The end of the first insert 2 includes a first inclined surface 201, the side of the first insert 2 includes a second inclined surface 202, and the end of the second insert 9 includes a third inclined surface 901. The first inclined surface 201, the second inclined surface 202, and the third inclined surface 901 are all located on the facing surfaces of the first insert 2 and the second insert 9. The first inclined surface 201 and the second inclined surface 202 are parallel to each other. The first slider seat 3 includes a fourth inclined surface 304. When the first insert 2 extends forward, the first inclined surface 201 and the fourth inclined surface 304 slide into contact, driving the first slider seat 3 to move in the opposite direction to the feeding direction. When the second insert 9 extends forward, the third inclined surface 901 can slide into contact with the fifth inclined surface 1001, thereby driving the third slider seat 10 to move and drive the push rod 11 to press against the trapezoidal insert 5, driving the trapezoidal insert 5 to move away from the corresponding fork-shaped insert 6, thus releasing the roller 7 from clamping the strip material. Figure 1 , Figure 12 As shown, when the first inserter 2 and the second inserter 9 move forward synchronously, the first inclined surface 201 first contacts the fourth inclined surface 304.

[0062] like Figure 1 As shown, in some other embodiments of the invention, the slider seat is enclosed within the frame block 13. For example... Figure 3 As shown, the bottom of the first slider seat 3 has several arc-shaped grooves 303. The cross-sectional profile of the arc-shaped grooves 303 is an arc shape, and the axis of the arc-shaped grooves 303 is horizontal. Rollers are installed inside the arc-shaped grooves 303, and the rollers have rotational freedom around their own axes. The part of the rollers exposed in the arc-shaped grooves 303 rolls and rubs against the frame block 13. In addition, the rollers are hidden in the attached figure to clearly show the arc-shaped grooves 303. In one embodiment, the rollers are solid cylinders. The rollers in the arc-shaped grooves 303 at the bottom of the first slider seat 3 convert the sliding friction between the first slider seat 3 and the frame block 13 into rolling friction, greatly reducing the motion resistance and making the first slider seat 3 move more smoothly. The second slider seat 14 is fixedly connected to the frame block 13.

[0063] like Figure 9 As shown, in one embodiment, the first slider seat 3 has a first protruding slider 301 that protrudes externally. The second slider seat 14 has a second protruding slider 1401 that protrudes externally, and the first and second protruding sliders 301 and 1401 extend in the same direction. Figure 11As shown, the frame block 13 has inlet and outlet ports 1301 on both sides. The inlet and outlet ports 1301 have guide grooves 13011. The first protruding slider 301 and the second protruding slider 1401 can be movably assembled with the guide grooves 13011 and fit together.

[0064] like Figure 9 As shown, in one embodiment, the first slider seat 3 has a recessed first receiving channel 302, and the second slider seat 14 also has a recessed second receiving channel 1402 on the same side. The first receiving channel 302 guides and limits the linear movement of the first trapezoidal insert 51, and the second receiving channel 1402 guides and limits the linear movement of the second trapezoidal insert 52.

[0065] like Figure 7 , Figure 8 As shown, in one embodiment, the cavity 501 of the first trapezoidal insert 51 has a connecting hole 505 that communicates with the first through hole 506, while the corresponding position of the second trapezoidal insert 52 does not have a connecting hole 505.

[0066] like Figure 3 , Figure 10 , Figure 11 As shown, in one embodiment, the discharge port of the frame block 13 is provided with an end insert 15, and the third slider seat 10 is installed in the end insert 15 and has the freedom to reciprocate along the feeding direction. Figure 3 As shown, a baffle 8 is fixedly inserted within the frame block 13, positioned between the third slider seat 10 and the first slider seat 3. A first return spring 1003 is provided between the third slider seat 10 and the baffle 8 to drive the third slider seat 10 back to its original position away from the first slider seat 3. After the third slope surface 901 of the second insert 9 disengages from the fifth slope surface 1001 of the third slider seat 10, the first return spring drives the third slider seat 10 back to its original position, and the transverse stop bar 16 within the end insert block 15 limits the ultimate position of the reset. Figure 3 , Figure 9 As shown, a second return spring 305 is provided between the first protruding slider 301 of the first slider seat 3 and the baffle 8 to drive the first slider seat 3 to reset in a direction away from the third slider seat 10. After the first inclined surface 201 of the first insert 2 disengages from the fourth inclined surface 304 of the first slider seat 3, the second return spring drives the first slider seat 3 to reset. Since the second slider seat 14 is fixedly installed in the frame block 13 by a locking member, when the first slider seat 3 resets to the limit position, the second protruding slider 1401 of the second slider seat 14 forms a blocking limit on the first protruding slider 301.

[0067] like Figure 7 As shown, in one embodiment, the feeding hole includes a first feeding hole 503 penetrating the trapezoidal insert 5 and a second feeding hole 1701 penetrating the pusher block 17. Figure 10As shown, the feeding hole also includes a first material passage hole 1002 penetrating the third slider seat 10 and a second material passage hole 1601 penetrating the transverse baffle 16.

[0068] like Figure 5 As shown, in one embodiment, the top or bottom surface of the fork-shaped insert 6 has a positioning groove 602. The surface of the positioning groove 602 is a concave curved surface, and the cross-sectional profile of the positioning groove 602 is arc-shaped. The surface of the protruding edge selectively positioned with the positioning groove 602 is a convex curved surface, and the cross-sectional profile of the protruding edge is arc-shaped.

[0069] A stamping die includes the feeding mechanism described above. The feeding mechanism is disposed on the side of the stamping die. The feeding mechanism is used to feed silver strip into the stamping die, where it is directly pressed together with conductive copper busbars within the stamping die.

[0070] The beneficial effects of adopting the above technical solution are: the feeding mechanism can coordinate with the mold processing action, reducing positioning errors caused by misalignment between feeding and mold closing timing. It can also adapt to strip materials 12 with different cross-sectional dimensions, expanding the applicability of the mold.

[0071] The working principle of the feeding mechanism is described below with reference to one embodiment of this application:

[0072] by Figures 13-16 Taking the vertical and horizontal directions as an example, the feeding mechanism is installed on the side of the stamping die. The pressure block 1 is linked with the upper die of the stamping die, and the frame block 13 is fixed with the lower die of the stamping die. The horizontal direction to the right in the figure is the feeding direction of the strip material 12.

[0073] like Figure 13 As shown, the stamping die is in a closed state at this time. Under the action of the first inserter 2, the first slider seat 3 is in the left position, and there is a distance b between the right end face of the first slider seat 3 and the left end face of the second slider seat 14. Under the action of the second inserter 9, the third slider seat 10 is in the right position, and there is a distance a between the left end face of the third slider seat 10 and the transverse stop bar 16. In this state, the push rod 11 pushes the first trapezoidal insert 51 on the first slider seat 3 and the second trapezoidal insert 52 on the second slider seat 14 to the right, so that the first trapezoidal insert 51 is disengaged from the first fork-shaped insert 61. The corresponding roller releases the clamping force on the strip material 12, and also makes the second trapezoidal insert 52 disengage from the second fork-shaped insert 62. The corresponding roller releases the clamping force on the strip material 12. Therefore, in this state, the strip material can pass freely through the feeding mechanism. The feeding mechanism does not apply a clamping force to the strip material so as not to interfere with the stamping die's punching action on the strip material.

[0074] like Figure 14As shown, when the stamping die opens, the second insert 9 separates from the third slider seat 10 first. Under the action of the first return spring 1003, the third slider seat 10 returns to the left and abuts against the transverse stop bar 16. At this time, the push rod 11 moves to the left with the third slider seat 10, releasing the pressure on the first trapezoidal insert 51 on the first slider seat 3 and the second trapezoidal insert 52 on the second slider seat 14. Under the action of their respective compression springs 4, the first trapezoidal insert 51 and the first fork-shaped insert 61 are pressed together, and the second trapezoidal insert 52 and the second fork-shaped insert 62 are pressed together. The corresponding rollers apply clamping force to the strip material 12.

[0075] like Figure 15 As shown, when the stamping die continues to open, the first insert 2 disengages upward from the first slide block 3. The first slide block 3 moves to the right under the action of the second return spring 305. During this rightward movement, the first fork-shaped insert 61 and the first trapezoidal insert 51 move synchronously with the first slide block 3. The corresponding compression spring 4 drives the corresponding roller 7 to maintain a clamping force on the strip material 12, thereby causing the strip material 12 to move to the right. Meanwhile, the second slide block 14 remains stationary. The rollers inside the second trapezoidal insert 52 initially exerted a clamping force on the strip material 12, but... When the strip material 12 moves to the right, it will drive the second trapezoidal insert 52 to move to the right against the elastic force of the corresponding compression spring. The second trapezoidal insert 52 will disengage from the second forked insert 62 on its left side, thereby causing the corresponding roller 7 to release the clamping force on the strip material 12 so as not to affect the rightward movement of the strip material 12. This achieves a feeding distance of b to the right of the strip material 12. That is, at this time, the strip material of length b is fed into the stamping die in the open mold state. After the feeding is completed, the roller in the second trapezoidal insert 52 resumes to generate a clamping force on the strip material 12.

[0076] like Figure 16 As shown, after the stamping die changes from open to closed, the first insert 2 first presses down against the first slide block 3, causing the first slide block 3 to move to the left. The first slide block 3 drives the first fork-shaped insert 61 to move to the left simultaneously. At this time, the second slide block is stationary. The rollers in the second trapezoidal insert 52 maintain the clamping force on the strip material 12. If the rollers in the first trapezoidal insert 51 continue to clamp the strip material 12, they will remain in the original position. The first trapezoidal insert 51 and the first fork-shaped insert 61 will separate, and the corresponding rollers will release the clamping force on the strip material 12. Therefore, during the movement of the first slide block 3 to the left, the strip material 12 will remain in the original position and will not move backward with the first slide block 3 to the left. The first slide block 3 will then drive the first fork-shaped insert 61 and the first trapezoidal insert 51 to separate from the strip material 12 and complete the left reset, returning to the left side position for the next feeding.

[0077] When the stamping die continues to close until it is fully closed, it returns to... Figure 13In the indicated state, the third slider seat 10 drives the push rod 11 to press against the first trapezoidal insert 51 on the first slider seat 3 and the second trapezoidal insert 52 on the second slider seat 14 to the right, releasing the clamping effect on the strip material 12. The feeding mechanism does not apply clamping force to the strip material, so as not to interfere with the punching operation of the stamping die on the strip material. The feeding mechanism of this application is compact, low in cost, and accurate in feeding length each time.

[0078] The above embodiments are only for illustrating the technical concept and features of this application. Their purpose is to enable those skilled in the art to understand the content of this application and implement it. They should not be used to limit the scope of protection of this application. All equivalent changes or modifications made in accordance with the spirit and essence of this application should be covered within the scope of protection of this application.

Claims

1. A feeding mechanism for a stamping die, characterized in that, include: Trapezoidal insert with outward bevels on both sides; The roller, wherein the trapezoidal insert has a cavity for accommodating the roller, and a portion of the roller is exposed from the outer inclined surface; The fork-shaped insert has a trapezoidal groove on one side of its surface facing the trapezoidal insert. The inner walls of the trapezoidal groove have inner inclined surfaces, which make the width of the trapezoidal groove gradually increase from the bottom surface of the trapezoidal groove to the opening. The push rod can pass through the forked insert and abut against the trapezoidal insert; There are two trapezoidal inserts and two fork-shaped inserts. The trapezoidal inserts and fork-shaped inserts are arranged alternately along a straight line. The trapezoidal inserts and fork-shaped inserts have feeding holes for the strip material to pass through. The arrangement direction of the trapezoidal inserts and fork-shaped inserts is perpendicular to the axis of the roller. The cavity has a central hole that communicates with the feeding hole, and the inner inclined surface can contact and squeeze the roller, drive the roller to move and clamp the strip material from the central hole; The end of the trapezoidal insert facing the bottom surface of the trapezoidal groove of the adjacent fork-shaped insert abuts against the top rod; The trapezoidal insert has a receiving cavity at one end away from the adjacent forked insert. The receiving cavity contains a compression spring, and the end of the compression spring away from the trapezoidal insert contacts a push block. Each trapezoidal insert has two mirror-symmetrically distributed outer inclined surfaces on its outer wall, and each fork-shaped insert has two mirror-symmetrically distributed inner inclined surfaces, wherein the outer inclined surfaces are parallel to the adjacent inner inclined surfaces. Each trapezoidal insert is equipped with two rollers that are arranged in a mirror-symmetric and parallel manner; There are two top rods, which are symmetrically distributed on both sides of the strip material. The arrangement direction of the trapezoidal inserts and fork-shaped inserts is parallel to the length direction of the top rods. The top rod includes a first round rod segment and a second round rod segment, wherein the diameter of the first round rod segment is larger than the diameter of the second round rod segment; The junction of the first round rod segment and the second round rod segment can abut against a trapezoidal insert, and the end of the second round rod segment away from the first round rod segment can abut against another trapezoidal insert; The trapezoidal insert includes a first trapezoidal insert and a second trapezoidal insert; the fork-shaped insert includes a first fork-shaped insert and a second fork-shaped insert; the push block includes a first push block and a second push block; the first fork-shaped insert, the first trapezoidal insert, the first push block, the second fork-shaped insert, the second trapezoidal insert, and the second push block are arranged sequentially along a straight line. It also includes a frame block, within which a first slider seat, a second slider seat, and a third slider seat are installed. The first and third slider seats have the freedom to reciprocate along the feeding direction within the frame block. The second slider seat is fixedly installed on the frame block. It also includes a first inserter and a second inserter driven synchronously. The linear motion direction of the first inserter is perpendicular to the movement direction of the first slider seat, and the linear motion direction of the second inserter is perpendicular to the movement direction of the third slider seat. The first inserter abuts against the first slider seat via an inclined surface, and the second inserter abuts against the third slider seat via an inclined surface. A first fork-shaped insert, a first trapezoidal insert, and a first push block are installed on the first slider seat, and a second fork-shaped insert, a second trapezoidal insert, and a second push block are installed on the second slider seat. The end of the push rod abuts against the third slider seat.

2. The stamping die feeding mechanism according to claim 1, characterized in that: The surface of the roller includes circumferential grooves, and each roller includes two circumferential grooves. The two circumferential grooves divide the roller into three cylindrical segments. The cylindrical segment located at the center of the roller can be pressed into contact with the strip material. The push rod can pass through the circumferential groove without contacting the inner wall of the circumferential groove; The roller has the degree of rotational freedom to rotate about its own axis within the cavity.

3. The stamping die feeding mechanism according to claim 1, characterized in that: The end of the first insert includes a first slope, the side of the first insert includes a second slope, and the end of the second insert includes a third slope. The first slope, the second slope, and the third slope are all located on the facing surfaces of the first insert and the second insert. The first slope surface and the second slope surface are parallel to each other; The first slider seat includes a fourth inclined surface. When the first inserter moves forward, the first inclined surface and the second inclined surface can slide and contact the fourth inclined surface in sequence.

4. The stamping die feeding mechanism according to claim 3, characterized in that: The third slider seat includes a fifth inclined surface, and when the second inserter moves forward, the third inclined surface can slide and contact the fifth inclined surface. When the first inserter and the second inserter move forward synchronously, the first inclined surface comes into contact with the fourth inclined surface first.

5. The stamping die feeding mechanism according to claim 3, characterized in that: The bottom of the first slider seat has several arc-shaped grooves. The cross-sectional profile of the arc-shaped groove is an arc shape. The axis of the arc-shaped groove is horizontal. A roller is provided in the arc-shaped groove. The roller has a rotational degree of freedom about its own axis.

6. A stamping die, characterized in that, include: The stamping die feeding mechanism according to any one of claims 1 to 5.

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