Electric connection terminal punching die

Abstract

The utility model discloses an electric connection terminal punching die, it includes: punch module, it includes first base and sets up the main punch on first base, and the main punch includes a plurality of parallelly arranged blades, and the blade mouth module includes the second base and sets up the main punch hole on the second base, and the main punch hole includes a plurality of respectively with the blade mouth of the blade on the main punch is adapted to the blade mouth, and the blade mouth module still includes the float block that sets up in the second base, and the float block includes a plurality of respectively with the support strip of blade mouth is opposite, and still be provided with the telescopic drive mechanism that is connected with the float block in the second base, and the telescopic drive mechanism is used for the adaptive drive float block and makes the ascending and descending movement, to make the support strip move up and down in the blade mouth. The above-mentioned punching die can provide additional support for the blade during punching, buffer the impact force and shear force that the blade is subjected to when punching to the bottom, thereby effectively avoiding the blade head from breaking or deforming due to excessive stress, significantly prolonging the service life of the punching die.

Description

Technical Field

[0001] This utility model relates to the field of punching die technology, and in particular to a punching die for electrical connection terminals. Background Technology

[0002] With the miniaturization and high integration of electronic devices, board-to-board connectors, as crucial components for circuit connections, face increasingly stringent requirements for structural design and manufacturing precision. The manufacturing process of board-to-board connectors typically involves punching multiple terminal strips from a terminal strip at once, which serve as the connector's pins. However, due to the miniaturization and high-density demands of modern connectors, the width of a single terminal strip is often very narrow, for example, approximately 0.15 mm, and the spacing between pins is also extremely small, for example, approximately 0.2 mm. These minute dimensions pose significant challenges to the design and manufacture of the punching dies.

[0003] In existing punching die technology, due to the extremely small width of the terminal strip and the pin spacing, the cutting edge and cutter head in the punching die need to be designed to be very narrow and long. However, during the punching process, the cutter head is subjected to significant impact and shearing forces, making it prone to breakage or deformation, affecting the die's service life and punching accuracy. To solve the problem of cutter head breakage, existing technologies typically increase the wall thickness of the cutter head to improve its strength. However, while this method can reduce the risk of cutter head breakage to some extent, the increased wall thickness prevents the die from continuously punching the terminal strip. The actual punching process often requires two intermittent punching operations to complete a section of terminal strip, which not only significantly reduces production efficiency but also leads to inconsistent spacing between the punched terminal strips, affecting product accuracy and consistency. Utility Model Content

[0004] The purpose of this invention is to provide an electrical connection terminal punching die that enables efficient and continuous punching of narrow terminal strips and effectively avoids cutter head breakage.

[0005] To achieve the above objectives, this utility model provides a punching die for electrical connection terminals, comprising: A punch module includes a first base and a main punch disposed on the first base, the main punch including a plurality of blades arranged in parallel; The cutting edge module includes a second base and a main punch hole disposed on the second base. The main punch hole includes a plurality of cutting edges that are respectively adapted to the cutting blades on the main punch head. By means of the cooperation between the main punch head and the main punch hole, when the first base is close to the second base, the terminal punching operation of the terminal strip is performed. The blade module also includes a floating block disposed in the second base. The floating block includes several support bars that are respectively opposite to the blade. The second base is also provided with a telescopic drive mechanism connected to the floating block. The telescopic drive mechanism is used to adaptively drive the floating block to move up and down, so that the support bar moves up and down in the cutting edge, and when the blade enters the cutting edge and moves to the limit cutting position, it abuts against the support bar.

[0006] Preferably, it also includes a guide module located between the punch module and the cutting edge module, which includes a third base and a through slot on the third base that is adapted to the main punch, the through slot being used to receive and guide the main punch toward or away from the main punch hole.

[0007] Preferably, the telescopic drive mechanism includes a supporting base plate and an elastic element. The second base is provided with a receiving groove, the supporting base plate is located in the receiving groove and can move up and down in the receiving groove, the floating block is disposed on the supporting base plate, and the supporting base plate is also provided with guide posts located on both sides of the floating block. The top end of the guide post extends from the top of the second base, and the guide post can slide relative to the second base, so that when the third base approaches the second base, the supporting base plate drives the floating block to move downward by means of the abutment between the third base and the guide post, so as to expose the blade. The elastic element is used to drive the supporting base plate to reset.

[0008] Preferably, the blade module further includes a mounting base connected to the bottom wall of the second base, and the elastic element is disposed in the mounting base.

[0009] Preferably, the second base includes a base and a buckle plate, a fixing block is provided on the base, the main punch hole is provided on the fixing block, and the buckle plate is fastened to the base and the fixing block is sleeved therein.

[0010] Preferably, the third base is provided with a positioning pin, and the second base is provided with a positioning hole that matches the positioning pin.

[0011] Preferably, the punch module further includes a pre-punch connected to the first base, and the second base is provided with a pre-punch hole adapted to the pre-punch. By means of the cooperation between the pre-punch and the pre-punch hole, when the first base is close to the second base, the pre-punch cutting of the terminal strip is performed.

[0012] Preferably, the punch module further includes a material removal punch connected to the first base, and the second base is provided with a material removal hole adapted to the material removal punch. By means of the cooperation between the material removal punch and the material removal hole, when the first base approaches the second base, the waste material removal work of the terminal strip is performed.

[0013] Compared with existing technologies, the electrical connection terminal punching die provided by the above technical solution, by setting a floating block and its support strip in the cutting edge module, and combining it with a telescopic drive mechanism to realize the up and down movement of the support strip in the cutting edge, allows the blade to abut against the support strip when it enters the cutting edge and moves to the limit punching position. This structure can provide additional support force for the blade during the punching process, buffering the impact and shearing forces on the blade when punching to the bottom, thereby effectively preventing the blade head from breaking or deforming due to excessive force, and significantly extending the service life of the punching die. In addition, since the blade can be protected by abutting against the support strip of the floating block during the punching process, there is no need to increase the strength by increasing the blade head wall thickness. Therefore, it avoids the limitation of traditional technologies where continuous punching is not possible due to the increase in blade head wall thickness. This allows the die to complete the continuous processing of the terminal strip in one punching process, eliminating the tedious steps of multiple cross-interval punching, thereby greatly improving production efficiency and improving the accuracy and consistency of the terminal strip spacing. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the punching die in the embodiment of this utility model.

[0015] Figure 2 for Figure 1 Floor plan.

[0016] Figure 3 for Figure 1 The exploded diagram.

[0017] Figure 4 This is a three-dimensional structural diagram of the punch module in the embodiment of this utility model.

[0018] Figure 5 This is a three-dimensional structural diagram of the telescopic drive mechanism in an embodiment of this utility model.

[0019] Figure 6 This is the three-dimensional structure of the blade module in this embodiment of the utility model, wherein the floating block is in a sunken state; Figure 7 This is the three-dimensional structure of the blade module in this embodiment of the utility model, wherein the floating block is in a floating state; Figure 8 This is an exploded view of the blade module in an embodiment of this utility model.

[0020] Figure 9This is a front perspective view of the guide module in an embodiment of this utility model.

[0021] Figure 10 This is a three-dimensional view of the back of the guide module in an embodiment of this utility model. Detailed Implementation

[0022] To explain in detail the technical content, structural features, objectives and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0023] This embodiment discloses an electrical connection terminal punching die, used to punch out multiple terminal strips from a terminal strip at one time to create multiple pins for a board-to-board connector. This punching die effectively solves the problems in the prior art caused by extremely small terminal strip width and pin spacing (e.g., terminal strip width approximately 0.15mm, pin spacing approximately 0.2mm), resulting in easy breakage of the cutting head, low production efficiency, and poor consistency in terminal strip spacing.

[0024] like Figures 1 to 6 The punching die consists of two parts: a punch module 1 and a cutting edge module 2. They can reciprocate in directions that are close to or far from each other during the punching operation to achieve the punching processing of the terminal strip.

[0025] Among them, such as Figure 4 The punch module 1 includes a first base 10 and a main punch 11 disposed on the first base 10. The main punch 11 includes a plurality of parallel blades 110, the width and spacing of each blade 110 being matched with the width of the terminal strip to be punched and the pin spacing.

[0026] like Figure 6 The cutting edge module 2 includes a second base 20 and a main punch hole 21 disposed on the second base 20. The main punch hole 21 has several cutting edges 210 corresponding one-to-one with the blades 110 on the main punch 11. The shape and size of the blades 110 are adapted to the cutting edges 210. With the cooperation of the punch module 1 and the cutting edge module 2, when the first base 10 approaches the second base 20, the blades 110 on the main punch 11 enter the cutting edges 210 within the main punch hole 21, thereby performing a punching operation on the terminal strip to form multiple terminal strips.

[0027] To address the problem of blade 110 breaking due to excessive force during the punching process, such as... Figure 3 and Figures 5 to 7 In this embodiment, a floating block 22 and a telescopic drive mechanism are provided in the blade module 2.

[0028] Specifically, the floating block 22 is disposed in the second base 20 and includes several support bars 220 that are one-to-one with the blades 210. The position and size of each support bar 220 match the corresponding blade 210. A telescopic drive mechanism is connected to the floating block 22 and is used to adaptively drive the floating block 22 to move up and down within the second base 20, thereby causing the support bars 220 to move up and down within the blades 210.

[0029] During the punching process, when the blade 110 enters the cutting edge 210 and moves to the limit punching position (i.e. when the blade 110 completes the cutting of the terminal strip), the end of the blade 110 abuts against the support bar 220, and the support bar 220 provides additional support force for the blade 110.

[0030] With the punching die of the above structure, firstly, since the blade 110 can be supported by the support bar 220 when punching to the bottom, the blade 110 is prevented from directly bearing excessive impact force, which significantly reduces the risk of the blade 110 breaking and extends the service life of the die.

[0031] Secondly, since there is no need to increase the wall thickness of the blade by 110 to improve strength, the mold can continuously punch the terminal strip, avoiding the cumbersome steps of multiple cross-interval punching in traditional technology, thereby improving production efficiency.

[0032] Furthermore, the continuous punching method reduces errors in the processing, ensuring the consistency and precision of the spacing of the terminal strips after punching, thus meeting the precision manufacturing requirements of high-density connectors.

[0033] On the other hand, such as Figure 1 , Figure 9 and Figure 10 In this embodiment, the punching die includes not only the punch module 1 and the cutting edge module 2, but also a guide module 3 located between the punch module 1 and the cutting edge module 2.

[0034] The guide module 3 includes a third base 30 and a through slot 31 disposed on the third base 30. The through slot 31 is adapted to the main punch 11 in the punch module 1 and is used to receive and guide the main punch 11 toward or away from the main punch hole 21 in the cutting edge module 2. Specifically, the shape and size of the through slot 31 correspond one-to-one with the blade 110 on the main punch 11, thereby providing precise guidance for the blade 110 during the punching process.

[0035] In this embodiment, the third base 30 of the guide module 3 is disposed between the first base 10 of the punch module 1 and the second base 20 of the cutting edge module 2, and the through groove 31 penetrates the upper and lower surfaces of the third base 30. When the first base 10 drives the main punch 11 to move downward, the blade 110 on the main punch 11 first enters the through groove 31 of the guide module 3. The through groove 31 provides initial positioning and guidance for the blade 110, ensuring that the blade 110 maintains the correct movement trajectory and posture before entering the main punch hole 21 of the cutting edge module 2. Subsequently, the blade 110 continues to move downward under the guidance of the through groove 31, accurately entering the cutting edge 210 in the main punch hole 21, and cooperating with the cutting edge 210 to complete the punching operation of the terminal strip. After punching is completed, the first base 10 drives the main punch 11 to move upward, and the blade 110 smoothly exits the main punch hole 21 and the through groove 31 under the guidance of the through groove 31, avoiding the blade 110 from deviating or shaking during the return stroke.

[0036] In this embodiment, the through slot 31 of the guide module 3 provides additional guidance and constraint for the blade 110, ensuring that the blade 110 maintains the correct movement trajectory during the punching process. This effectively avoids punching errors or damage to the blade 110 caused by blade deviation, further improving punching accuracy. It is particularly suitable for processing small-sized terminal strips. Secondly, the presence of the guide module 3 reduces the initial deviation of the blade 110 when entering the cutting edge 210, reducing the friction and impact force between the blade 110 and the cutting edge 210, thereby further protecting the blade 110 and extending the service life of the die.

[0037] On the other hand, please refer again to... Figure 3 , Figure 5 and Figure 6 The telescopic drive mechanism includes a support base plate 230 and an elastic element 231. The second base 20 of the blade module 2 is provided with a receiving groove 232. The support base plate 230 is located in the receiving groove 232 and can move up and down in the receiving groove 232.

[0038] The floating block 22 is set on the support base plate 230 and rises and falls synchronously with the movement of the support base plate 230, thereby driving the support bar 220 on the floating block 22 to move up and down within the cutting edge 210.

[0039] In addition, the support base plate 230 is provided with guide posts 233 located on both sides of the floating block 22. The top of the guide post 233 extends from the top of the second base 20, and the guide post 233 can slide relative to the second base 20. When the third base 30 of the guide module 3 approaches the second base 20, the third base 30 abuts against the top of the guide post 233, applying a downward force, which causes the support base plate 230 to drive the floating block 22 to move downward, thereby exposing the cutting edge 210, so that the blade 110 can enter the cutting edge 210 to complete the punching operation.

[0040] The elastic element 231 is used to drive the support base plate 230 to reset. When the third base 30 moves away from the second base 20, the elastic element 231 provides an upward elastic force, pushing the support base plate 230 and the floating block 22 upward, so that the support bar 220 returns to the initial position, thereby pushing the waste material punched out of the terminal strip and still connected to the strip body out of the cutting edge 210, so that the waste material can be removed in the next punching process.

[0041] In this embodiment, the elastic element 231 is preferably a spring. The spring constant can be selected according to the actual punching requirements to ensure that it can provide sufficient restoring force, while allowing the support base plate 230 to move smoothly downward when the third base 30 abuts against the guide post 233.

[0042] In this embodiment, the depth and dimensions of the receiving groove 232 can be designed according to the moving stroke of the floating block 22 and the supporting base plate 230 to ensure that the floating block 22 can fully expose the cutting edge 210 when moving downwards, and that the supporting bar 220 can accurately return to the predetermined position within the cutting edge 210 when resetting. Furthermore, in addition to springs, the elastic element 231 can also be other components with elastic resetting functions, such as gas springs or elastic rubber parts, to meet different process requirements.

[0043] Specifically, the blade module 2 also includes a mounting base 234 connected to the bottom wall of the second base 20, and an elastic element 231 is disposed in the mounting base 234.

[0044] On the other hand, such as Figures 6 to 8 The second base 20 in the blade module 2 includes two parts: a base 200 and a buckle plate 201. A fixing block 202 is provided on the base 200, and a main punch hole 21 is provided on the fixing block 202. The buckle plate 201 is fastened to the base 200, and the fixing block 202 is fitted into it, thereby firmly fixing the fixing block 202 to the base 200, forming a stable second base 20 structure.

[0045] In this embodiment, the base 200 serves as the foundation of the second base 20, providing the main support. It has an installation area for accommodating the fixing block 202. The fixing block 202 is an independent modular component. The main punch 21 and its internal cutting edge 210 are pre-machined onto the fixing block 202, facilitating the precision manufacturing and subsequent maintenance of the cutting edge 210. The snap plate 201 is designed with an open slot, its shape matching the shape of the fixing block 202. The snap plate 201 is connected to the base 200 via a snap-fit ​​mechanism, such as bolts, clips, or other fasteners, securely fitting the fixing block 202 between the snap plate 201 and the base 200, ensuring that the fixing block 202 does not shift or loosen during the punching process.

[0046] In this embodiment, the second base 20 adopts a combined structure of base 200, fixing block 202 and buckle plate 201. The main punch 21 and the cutting edge 210 are set on the independent fixing block 202, which makes the processing and assembly of the cutting edge 210 more convenient. Especially when the cutting edge 210 requires high-precision processing, the fixing block 202 can be manufactured and inspected separately, which improves manufacturing accuracy and efficiency. Secondly, the modular design of the fixing block 202 is easy to disassemble and replace. When the cutting edge 210 is worn or damaged due to long-term use, the fixing block 202 can be replaced simply by removing the buckle plate 201, without having to make extensive adjustments or repairs to the entire second base 20, which significantly reduces maintenance costs and time.

[0047] On the other hand, such as Figure 6 and Figure 10 The guide module 3 has a third base 30 equipped with a positioning pin 32, and the cutting edge module 2 has a second base 20 equipped with a positioning hole 24 that matches the positioning pin 32. During the punching process, when the third base 30 approaches the second base 20, the positioning pin 32 inserts into the positioning hole 24, providing precise guidance and fixation to ensure accurate relative positioning between the third base 30 and the second base 20. Specifically, the number and position of the positioning pins 32 can be designed according to actual needs. For example, two or more positioning pins 32 can be evenly distributed at appropriate positions on the third base 30 to prevent rotation or displacement. The shape, size, and depth of the positioning hole 24 match the positioning pin 32, and are typically cylindrical or tapered to achieve smooth insertion and stable fixation.

[0048] On the other hand, such as Figure 4 and Figure 6 The punch module 1 also includes a pre-punch 12 connected to the first base 10. The second base 20 has a pre-punch hole 25 adapted to the pre-punch 12. With the cooperation of the pre-punch 12 and the pre-punch hole 25, when the first base 10 approaches the second base 20, pre-punching of the terminal strip is performed. The purpose of pre-punching is to perform preliminary punching or positioning cutting on the terminal strip before the final punching by the blade 110 on the main punch 11, so as to facilitate the smooth progress of the subsequent main punching operation, reduce resistance during the main punching, and improve machining accuracy and the service life of the blade 110.

[0049] Specifically, during the punching process, by controlling the reciprocating motion of the punch module 1 and the guide module 3, the pre-punch 12 contacts the front end of the terminal strip and inserts into the pre-punch hole 25 to pre-punch the strip, forming a preliminary hole or cut. At the same time, the main punch 11 punches the rear end of the strip that has been processed by the pre-punch 12.

[0050] On the other hand, the punch module 1 also includes a material removal punch 13 connected to the first base 10, and the second base 20 of the cutting edge module 2 is provided with a material removal hole 26 adapted to the material removal punch 13. With the cooperation of the material removal punch 13 and the material removal hole 26, when the first base 10 approaches the second base 20, the material removal punch 13 enters the material removal hole 26 to perform the waste removal work of the terminal strip.

[0051] The function of the material removal punch 13 is to completely separate the waste generated during the punching process from the terminal strip after the main punching operation is completed.

[0052] During the punching process, by controlling the reciprocating motion of the punch module 1 and the guide module 3, the pre-punch 12 contacts the front end of the terminal strip and inserts into the pre-punch hole 25 to pre-punch the strip, forming a preliminary hole or cut; at the same time, the main punch 11 punches the rear end of the position processed by the pre-punch 12; simultaneously, the material removal punch 13 punches the rear end of the position processed by the main punch 11 to remove the waste strip.

[0053] In summary, as Figures 1 to 10 This utility model discloses a punching die for electrical connection terminals, the main working process of which is as follows: First, the cutting edge module 2 is fixed in place, and the terminal strip is placed on the second base 20. The punch module 1 and the guide module 3 are controlled to move towards the cutting edge module 2 simultaneously until the positioning pin 32 on the third base 30 enters the positioning hole 24 on the second base 20. At this time, the third base 30 presses the guide post 233 into the second base 20. Then, the guide post 233 drives the support base plate 230 to move in the receiving groove 232, so that the floating block 22 moves down, thereby exposing the main punch hole 21.

[0054] Then, the punch module 1 is controlled to continue moving towards the cutting edge module 2 so that the main punch 11 enters the main punch hole 21, while the pre-punch 12 enters the pre-punch hole 25 and the material removal punch 13 enters the material removal hole 26.

[0055] Next, after completing one punching operation, the punch module 1 is moved up one end (e.g., 2mm) so that the main punch 11 exits the main punch hole 21, and at the same time, the pre-punch 12 exits the pre-punch hole 25 and the material removal punch 13 exits the material removal hole 26.

[0056] Then, the control punch module 1 and the guide module 3 continue to move upward simultaneously. As the guide module 3 moves upward, the guide post 233 is released. Under the elastic restoring force of the elastic element 231, the support base plate 230 moves upward, thereby causing the floating block 22 to move upward. As the floating block 22 moves upward, it pushes out the waste material that has been punched into the cutting edge 210, completing one punching operation.

[0057] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the scope of the present utility model application shall still fall within the scope of the present utility model.

Claims

1. A punching die for electrical connection terminals, characterized in that, include: A punch module includes a first base and a main punch disposed on the first base, the main punch including a plurality of blades arranged in parallel; The cutting edge module includes a second base and a main punch hole disposed on the second base. The main punch hole includes a plurality of cutting edges that are respectively adapted to the cutting blades on the main punch head. By means of the cooperation between the main punch head and the main punch hole, when the first base is close to the second base, the terminal punching operation of the terminal strip is performed. The blade module also includes a floating block disposed in the second base. The floating block includes several support bars that are respectively opposite to the blade. The second base is also provided with a telescopic drive mechanism connected to the floating block. The telescopic drive mechanism is used to adaptively drive the floating block to move up and down, so that the support bar moves up and down in the cutting edge, and when the blade enters the cutting edge and moves to the limit cutting position, it abuts against the support bar.

2. The punching die for electrical connection terminals according to claim 1, characterized in that, It also includes a guide module located between the punch module and the cutting edge module, which includes a third base and a through slot on the third base that is adapted to the main punch. The through slot is used to receive and guide the main punch toward or away from the main punch hole.

3. The punching die for electrical connection terminals according to claim 2, characterized in that, The telescopic drive mechanism includes a supporting base plate and an elastic element. The second base is provided with a receiving groove, the supporting base plate is located in the receiving groove and can move up and down in the receiving groove, the floating block is disposed on the supporting base plate, and the supporting base plate is also provided with guide posts located on both sides of the floating block. The top end of the guide post extends from the top of the second base, and the guide post can slide relative to the second base, so that when the third base approaches the second base, the supporting base plate drives the floating block to move downward by means of the abutment between the third base and the guide post, so as to expose the blade. The elastic element is used to drive the supporting base plate to reset.

4. The punching die for electrical connection terminals according to claim 3, characterized in that, The blade module also includes a mounting base connected to the bottom wall of the second base, and the elastic element is disposed in the mounting base.

5. The punching die for electrical connection terminals according to claim 1, characterized in that, The second base includes a base and a buckle plate. A fixing block is provided on the base, and the main punch hole is provided on the fixing block. The buckle plate is fastened to the base and the fixing block is sleeved therein.

6. The punching die for electrical connection terminals according to claim 2, characterized in that, The third base is provided with a positioning pin, and the second base is provided with a positioning hole that matches the positioning pin.

7. The punching die for electrical connection terminals according to claim 2, characterized in that, The punch module also includes a pre-punch connected to the first base. The second base is provided with a pre-punch hole adapted to the pre-punch. By means of the cooperation between the pre-punch and the pre-punch hole, when the first base is close to the second base, the pre-punch cutting of the terminal strip is performed.

8. The punching die for electrical connection terminals according to claim 1, characterized in that, The punch module also includes a material removal punch connected to the first base. The second base is provided with a material removal hole adapted to the material removal punch. By means of the cooperation between the material removal punch and the material removal hole, when the first base approaches the second base, the waste material removal work of the terminal strip is performed.

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