A terminal pin crimping device for an automobile wire harness

Abstract

The utility model relates to crimping device technical field and disclose a kind of automobile wiring harness terminal pin crimping device, including crimping base, the upper end four corners of crimping base are all equipped with support column, the top of support column is equipped with crimping top seat, the bottom of crimping top seat is equipped with crimping carrier, and the upper end of crimping base is equipped with crimping carrier plate;The upper end front side of crimping carrier plate is equipped with die lower plate, and lower die seat is installed on the die lower plate, the bottom of crimping carrier is equipped with die upper plate, and crimping die head is installed on the die upper plate;The device is through the clamping and cooperation of crimping die head and crimping carrier by clamping block and clamping groove, and the inclined convex surface of the two sides of clamping block and the inclined concave surface of the inner wall of clamping groove are adapted, cooperate U-shaped elastic plate in the filling cavity of clamping block, both realize the quick installation and disassembly of die head.

Description

Technical Field

[0001] This utility model relates to the field of crimping device technology, specifically to a crimping device for automotive wiring harness terminal pins. Background Technology

[0002] Automotive wiring harnesses are a core component of automotive circuits, and the crimping quality of terminal pins directly affects the stability and safety of the automotive circuitry. Currently, automotive wiring harness terminal pin crimping devices are widely used in the automotive manufacturing industry, but existing devices still have many shortcomings: the connection between the crimping die head and the crimping carrier often uses bolt fixing methods, which are cumbersome to install and disassemble, and are prone to loosening after long-term use, affecting crimping positioning accuracy. Therefore, improvements to existing technology are needed. Utility Model Content

[0003] The purpose of this invention is to provide an automotive wiring harness terminal pin crimping device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a crimping device for automotive wiring harness terminal pins, comprising a crimping base, support columns installed at the four corners of the upper end of the crimping base, a crimping top seat installed at the top of the support columns, a crimping carrier assembled at the bottom of the crimping top seat, and a crimping plate installed at the upper end of the crimping base; a lower mold plate is assembled on the front side of the upper end of the crimping plate, a lower mold base is installed on the lower mold plate, an upper mold plate is installed at the bottom of the crimping carrier, a crimping mold head is installed on the upper mold plate, a slot is formed at the bottom of the crimping carrier corresponding to the lower mold plate, a locking block is installed at the top of the crimping mold head, the locking block is engaged in the slot, and a buffer assembly is assembled between the crimping base and the crimping top seat.

[0005] Preferably, the outer walls on both sides of the card block are provided with inclined convex surfaces, and the inner walls on both sides of the card slot are provided with inclined concave surfaces, and the inclined convex surfaces and inclined concave surfaces cooperate with each other.

[0006] Preferably, the card block has a filling cavity inside, and a U-shaped elastic plate is installed inside the filling cavity.

[0007] Preferably, an electric push rod is installed at the center of the top of the pressing seat, and the pressing carrier is connected to the drive end of the electric push rod.

[0008] Preferably, the top of the pressing seat is provided with guide holes at the four corners of the electric push rod, and guide rods are installed at the four corners of the top of the pressing carrier corresponding to the guide holes, and the guide rods are inserted into the guide holes.

[0009] Preferably, the buffer assembly includes a buffer spring a installed on the rear side of the lower end of the pressing carrier, and a buffer plate a is installed at the end of the buffer spring a.

[0010] Preferably, the buffer assembly further includes buffer springs b installed on the left and right sides of the pressing carrier, with a positioning cylinder installed at the end of the buffer spring b, and a buffer spring c installed at the top of the pressing base below the positioning cylinder, with a positioning rod installed at the top of the buffer spring c.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: The device uses a pressing mold head and a pressing carrier to engage with each other via a locking block and a locking slot. The convex surfaces on both sides of the locking block are adapted to the concave surfaces on the inner wall of the locking slot. Combined with the U-shaped elastic plate in the filling cavity inside the locking block, this device enables quick installation and removal of the mold head while ensuring a strong connection. At the same time, the oblique engagement structure improves the positioning accuracy of the mold head and prevents offset during the pressing process. Attached Figure Description

[0012] Figure 1 This is the front view of the present invention; Figure 2 This is a side view of the present invention; Figure 3 This is a front view of the present invention; Figure 4 This is a schematic diagram of part A of the present invention.

[0013] In the diagram: 1. Pressing base; 2. Pressing carrier; 3. Sloping convex surface; 4. Sloping concave surface; 5. Support column; 6. Pressing top seat; 7. Electric push rod; 8. Guide rod; 9. Guide hole; 10. Buffer spring a; 11. Mold upper plate; 12. Pressing mold head; 13. Pressing carrier plate; 14. Mold lower plate; 15. Lower mold base; 16. Positioning rod; 17. Buffer plate a; 18. Buffer spring a; 19. Buffer assembly; 20. Buffer spring b; 21. Positioning cylinder; 22. Filling cavity; 23. Slot; 24. Block; 25. Sloping convex surface; 26. Sloping concave surface; 27. U-shaped elastic plate. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figures 1-4As shown, an automotive wiring harness terminal pin crimping device includes a crimping base 1. Support columns 5 are installed at the four corners of the upper end of the crimping base 1. A crimping top seat 6 is installed at the top of each support column 5. A crimping carrier 2 is assembled at the bottom of the crimping top seat 6. A crimping plate 13 is installed at the upper end of the crimping base 1. A lower mold plate 14 is assembled on the front side of the upper end of the crimping plate 13. A lower mold base 15 is installed on the lower mold plate 14. An upper mold plate 11 is installed at the bottom of the crimping carrier 2. A crimping mold head 12 is installed on the upper mold plate 11. A slot 23 is formed at the bottom of the crimping carrier 2 corresponding to the lower mold plate 14. A locking block 24 is installed at the top of the crimping mold head 12 and engages with the slot 23. A buffer assembly 19 is assembled between the crimping base 1 and the crimping top seat 6.

[0016] In the specific implementation process, the crimping base 1, as the basic load-bearing component of the device, forms a stable frame structure with the crimping top seat 6 through the support columns 5 at the four corners, providing rigid support for the entire crimping action. The crimping carrier 2 and the crimping plate 13 respectively support the upper and lower crimping components. The crimping plate 13 is fixed to the upper end of the crimping base 1, providing a stable installation reference for the lower mold plate 14 and the lower mold base 15. The crimping carrier 2 is assembled at the bottom end of the crimping top seat 6 and is used to install the upper mold plate 11 and the crimping mold head 12. It can move up and down with the drive component. The crimping mold head 12 is fixed by the locking block 24 at the top end and the locking groove 23 at the bottom end of the crimping carrier 2, realizing quick assembly. The buffer component 19 is set between the crimping base 1 and the crimping top seat 6 to absorb the impact force generated during the crimping process and protect the device components and terminal pins.

[0017] In some technical solutions, the left and right outer walls of the card block 24 are provided with inclined convex surfaces 3, and the left and right inner walls of the card slot 23 are provided with inclined concave surfaces 4, with the inclined convex surfaces 3 and the inclined concave surfaces 4 cooperating with each other.

[0018] In practical implementation, the inclined convex surfaces 3 on both sides of the locking block 24 and the inclined concave surfaces 4 on the inner wall of the locking groove 23 adopt a complementary tilt angle design. During assembly, the inclined convex surfaces 3 can slide along the inclined concave surfaces 4 to achieve automatic guidance and alignment, completing the locking without precise alignment and improving installation efficiency. At the same time, the inclined mating structure can generate lateral pre-tightening force, making the locking block 24 and the locking groove 23 fit more tightly, effectively limiting the lateral displacement of the pressing die head 12 during the pressing process, avoiding positioning deviations caused by vibration, and further ensuring pressing accuracy.

[0019] In some technical solutions, the card block 24 has a filling cavity 22 inside, and a U-shaped elastic plate 27 is installed inside the filling cavity 22.

[0020] In practical implementation, the filling cavity 22 inside the locking block 24 provides installation space for the U-shaped elastic plate 27, which is made of a metal material with good elastic recovery properties. When the locking block 24 is inserted into the locking groove 23, the inclined convex surface 3 and the inclined concave surface 4 squeeze the locking block 24, causing it to deform slightly. The U-shaped elastic plate 27 is simultaneously compressed and generates a reverse elastic force, causing the locking block 24 to fit tightly with the locking groove 23. During disassembly, applying external force can reset the U-shaped elastic plate 27, causing the locking block 24 to separate from the locking groove 23. This solves the problem of cumbersome disassembly and assembly in traditional fixing methods. At the same time, the elastic pre-tightening force can counteract vibration and loosening during long-term use, extending the service life of the connection structure.

[0021] In some technical solutions, an electric push rod 7 is installed at the center of the top of the pressing seat 6, and the pressing carrier 2 is connected to the drive end of the electric push rod 7.

[0022] In practical implementation, the electric push rod 7 is fixed to the center of the top of the crimping top seat 6 by bolts. Its drive end passes through the crimping top seat 6 and is rigidly connected to the crimping carrier 2. The extension stroke, speed, and output force can be precisely controlled by the electronic control system. During operation, the electric push rod 7 drives the crimping carrier 2 to move up and down vertically, causing the upper mold plate 11 and the crimping mold head 12 to move closer to or away from the lower mold seat 15, realizing the crimping or separation of the terminal pins and the wire harness. Compared with manual or pneumatic drive, the electronic control adjustment method of the electric push rod 7 can achieve precise quantification of crimping parameters, ensuring consistent crimping quality for each set of terminals in mass production, and adapting to the needs of large-scale production of automotive wire harnesses.

[0023] In some technical solutions, the top of the pressing seat 6 is provided with guide holes 9 at the four corners of the electric push rod 7, and guide rods 8 are installed at the four corners of the top of the pressing carrier 2 corresponding to the guide holes 9, and the guide rods 8 are inserted into the guide holes 9.

[0024] In the specific implementation process, the guide rod 8 and the guide hole 9 adopt a clearance fit design. The tolerance between the outer diameter of the guide rod 8 and the inner diameter of the guide hole 9 is controlled within the range of 0.02-0.05mm, ensuring smooth sliding while avoiding offset caused by excessive clearance. When the crimping carrier 2 moves, the guide rods 8 at the four corners slide synchronously along the corresponding guide holes 9 axially, forming a four-point guiding constraint, which strictly limits the lateral swing and torsion of the crimping carrier 2, ensuring that the upper mold plate 11 drives the crimping mold head 12 to accurately align with the crimping position of the lower mold base 15, effectively reducing problems such as terminal pin crimping deformation and poor contact caused by alignment deviation.

[0025] In some technical solutions, the buffer assembly 19 includes a buffer spring a10 installed on the rear side of the lower end of the pressing carrier 2, and a buffer plate a17 is installed at the end of the buffer spring a10.

[0026] In the specific implementation process, the buffer spring a10 is a high-strength compression spring, which is vertically installed on the rear side of the lower end of the crimping carrier 2. The buffer plate a17 is made of wear-resistant rubber or elastic metal plate and is fixed to the lower end of the buffer spring a10. When the crimping carrier 2 moves downward to perform the crimping action, the buffer plate a17 contacts the crimping carrier plate 13 or related limiting structure before the crimping die head 12. The buffer spring a10 is compressed and contracts, absorbing part of the downward impact force through elastic deformation, avoiding hard contact between the crimping carrier 2 and the crimping carrier plate 13, and reducing the impact force on the crimping die head 12 and the lower die base 15, thus protecting the die accuracy and the integrity of the terminal pins.

[0027] In some technical solutions, the buffer assembly 19 also includes buffer springs b20 installed on the left and right sides of the pressing carrier 2. The end of the buffer spring b20 is equipped with a positioning cylinder 21. The top of the pressing base 1 is located at the lower end of the positioning cylinder 21 and a buffer spring c18 is installed. The top of the buffer spring c18 is equipped with a positioning rod 16.

[0028] In practical implementation, the multiple structures of the buffer assembly 19 form a comprehensive buffering system: the buffer springs b20 are horizontally installed on the left and right sides of the pressing carrier 2, which can absorb the lateral impact force generated during the pressing process and prevent the pressing carrier 2 from shifting left or right; the positioning cylinder 21 and the positioning rod 16 adopt a coaxial fit design. When the pressing carrier 2 moves downward, the positioning cylinder 21 is fitted into the outside of the positioning rod 16 to achieve longitudinal positioning and guidance. At the same time, the buffer spring c18 at the bottom is compressed and contracted to further absorb the longitudinal impact force. This dual buffering design of lateral + longitudinal can completely offset the pressing impact force, which not only improves the stability of the pressing process, but also reduces the wear of various components of the device and extends the overall service life.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A crimping device for automotive wiring harness terminal pins, comprising a crimping base (1), characterized in that, Support columns (5) are installed at the four corners of the upper end of the crimping base (1). A crimping top seat (6) is installed at the top of the support column (5). A crimping carrier (2) is assembled at the bottom of the crimping top seat (6). A crimping plate (13) is installed at the upper end of the crimping base (1). The upper front side of the pressing carrier plate (13) is equipped with a mold lower plate (14), and a lower mold base (15) is installed on the mold lower plate (14). The bottom end of the pressing carrier (2) is equipped with a mold upper plate (11), and a pressing mold head (12) is installed on the mold upper plate (11). A slot (23) is opened at the bottom end of the pressing carrier (2) corresponding to the mold lower plate (14). A locking block (24) is installed at the top of the pressing mold head (12). The locking block (24) is locked in the slot (23). A buffer assembly (19) is assembled between the pressing base (1) and the pressing top seat (6).

2. The automotive wiring harness terminal pin crimping device according to claim 1, characterized in that: The left and right outer walls of the card block (24) are provided with inclined convex surfaces (3), and the left and right inner walls of the card slot (23) are provided with inclined concave surfaces (4). The inclined convex surfaces (3) and inclined concave surfaces (4) cooperate with each other.

3. The automotive wiring harness terminal pin crimping device according to claim 2, characterized in that: The card block (24) has a filling cavity (22) inside, and a U-shaped elastic plate (27) is installed inside the filling cavity (22).

4. The automotive wiring harness terminal pin crimping device according to claim 1, characterized in that: An electric push rod (7) is installed at the center of the top of the pressing seat (6), and the pressing carrier (2) is connected to the drive end of the electric push rod (7).

5. The automotive wiring harness terminal pin crimping device according to claim 4, characterized in that: The top of the pressing seat (6) is provided with guide holes (9) at the four corners of the electric push rod (7). The top of the pressing carrier (2) is provided with guide rods (8) at the four corners of the top corresponding to the guide holes (9). The guide rods (8) are inserted into the guide holes (9).

6. The automotive wiring harness terminal pin crimping device according to claim 1, characterized in that: The buffer assembly (19) includes a buffer spring a (10) installed on the rear side of the lower end of the press carrier (2), and a buffer plate a (17) is installed at the end of the buffer spring a (10).

7. The automotive wiring harness terminal pin crimping device according to claim 6, characterized in that: The buffer assembly (19) also includes buffer springs b (20) installed on the left and right sides of the pressing carrier (2). The end of the buffer spring b (20) is equipped with a positioning cylinder (21). The top of the pressing base (1) is located at the lower end of the positioning cylinder (21) and a buffer spring c (18) is installed. The top of the buffer spring c (18) is equipped with a positioning rod (16).

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