Riveting and twisting integrated terminal forming die

Abstract

The utility model discloses a riveting and twisting integrated terminal forming die. The riveting and twisting integrated terminal forming die comprises a lower die and an upper die, the lower die comprises a lower base, a rotating seat and a driving assembly; the rotating seat is arranged on the lower base in a back-and-forth rotating mode, a rotating gear and a rotating core rod are arranged on the rotating seat, the driving assembly comprises a movable seat, a rack and a wedge-shaped block, and the rack is fixed to the movable seat and meshed with the rotating gear; the upper die comprises an upper base, a positioning core rod and a cutting block, and the cutting block is arranged on the upper base and matched with the wedge-shaped block to promote the wedge-shaped block to move transversely and horizontally. The rotary core rod and the positioning core rod are arranged in a matched mode, the wedge-shaped block is promoted to move transversely and horizontally through matching of the cutting block and the wedge-shaped block, the forming die can twist and rivet a reed in the closing process, a terminal can be manufactured and formed through one-step operation, multiple times of operation through multiple devices are not needed, and the forming efficiency is improved. Therefore, the production efficiency is effectively improved, and the productivity is favorably improved.

Description

Technical Field

[0001] The utility model relates to the technology of mold field, in particular to a riveting, pressing and twisting integrated terminal forming mold. Background Art

[0002] A high-current connector is a power connector that has been widely used in various power transmission systems, such as power distribution systems or power supply systems, as a power connection interface. In a power supply system, the waterproof, anti-loosening and anti-vibration functions of the power connector are very important, especially for a moving power supply system. At present, automotive high-current connectors are required to have a compact structure, small size, easy operation, vibration resistance, safe and reliable electrical connection, and 360° shielding. High-current connectors have the ability to withstand high voltage and high current to ensure their long-term safe operation and avoid fire accidents caused by discharge.

[0003] At present, the terminals used in high-current connectors are mainly crown spring terminals, whose main structure includes a spring leaf, an inner bushing and two outer bushings; the spring leaf is cylindrical, with multiple twisted strips in the middle of the spring leaf, multiple lower riveting strips at the lower end of the spring leaf, which are reversely bent upward and riveted into one of the outer bushings, and multiple upper riveting strips at the upper end of the spring leaf, which are reversely bent downward and riveted into the other outer bushing. Therefore, this crown spring terminal needs to be twisted and riveted during the production and assembly process.

[0004] In the prior art, when forming the crown spring type terminal, the inner bushing is first put on the outer side of the middle part of the spring sheet, and then the spring sheet and the inner bushing are placed in a twisting device to twist the spring sheet. After the twisting is completed, the two outer bushings are successively placed in a riveting device to rivet the spring sheet. In this way, the crown spring type terminal needs to be formed by multiple devices and multiple operations. This method makes the production efficiency very low and is not conducive to the improvement of production capacity. Therefore, it is necessary to study a solution to solve the above problems. Utility Model Content

[0005] In view of this, the present invention aims to overcome the deficiencies in the prior art, and its main purpose is to provide a terminal forming die that is a riveted, twisted, and integrated type, which can effectively solve the problem of low production efficiency caused by the existing production method of crown spring type terminals.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A riveting, pressing and twisting integrated terminal forming die, comprising a lower die and an upper die;

[0008] The lower mold includes a lower base, a rotating base and a driving assembly; the rotating base can be rotatably arranged on the lower base, and a rotating gear and a rotating mandrel are provided on the rotating base, the rotating mandrel and the rotating gear are coaxially arranged, the rotating mandrel extends upward from the surface of the lower base, the lower end of the rotating mandrel is provided with a lower flip bushing, and the upper end of the rotating mandrel is convexly provided with a plurality of lower convex ribs, the plurality of lower convex ribs are arranged at intervals in a circumferential circle, each lower convex rib extends up and down, and a lower positioning groove is formed between two adjacent lower convex ribs; the driving assembly can be movably arranged on the lower base horizontally and back and forth, the driving assembly is located on the side of the rotating base, the driving assembly includes a movable seat, a rack and a wedge block, the rack is fixed on the movable seat and meshes with the rotating gear, and the wedge block is fixed on the movable seat and extends upward from the surface of the lower base;

[0009] The upper mold can be movably arranged up and down just above the lower mold, and the upper mold includes an upper base, a positioning core rod and a cutting block. The positioning core rod is arranged on the upper base and extends downward from the bottom surface of the upper base, and the upper end of the positioning core rod is provided with an upper flip bushing. The lower end of the rotating core rod is convexly provided with a plurality of upper ribs, and the plurality of upper ribs are arranged at intervals in a circle, each upper rib extends up and down, and an upper positioning groove is formed between two adjacent upper ribs; the cutting block is arranged on the upper base and cooperates with the wedge block to promote the horizontal movement of the wedge block.

[0010] As a preferred solution, a receiving groove is formed through both sides of the lower base, and a guide groove is opened on the surface of the lower base, which is connected to the receiving groove. The movable seat is located in the receiving groove, and the wedge block extends upward through the guide groove from the surface of the lower base. The wedge block moves back and forth along the guide groove. The structure is simple, the installation is stable, and the operation is smooth.

[0011] As a preferred solution, the movable seat is installed in the accommodating groove so as to slide back and forth horizontally via a guide rail, and the sliding is smooth and stable.

[0012] As a preferred solution, a return spring piece for causing the movable seat to return is connected between one end of the movable seat and the lower base, so that the movable seat returns automatically.

[0013] As a preferred solution, an adjustment spring for adjusting the rotation distance is provided between the return spring piece and the lower base.

[0014] As a preferred solution, guide holes are recessed at each corner of the surface of the lower base, and correspondingly, guide columns are provided at each corner of the bottom surface of the upper base. The guide columns cooperate with the guide holes for insertion and guidance, so that the upper and lower molds can be accurately matched.

[0015] As a preferred solution, an adjustment block for adjusting the position of the positioning core rod is provided on the upper base.

[0016] As a preferred solution, the lower base includes a fixed table and a movable table, a concave cavity is opened in the middle of the fixed table, the movable table is adapted to the concave cavity and can be movably arranged in the concave cavity up and down, the movable table is driven by the ejection spring to move upward, a through hole is opened in the center of the movable table, and the rotating core rod extends upward from bottom to top through the through hole.

[0017] As a preferred solution, the plurality of lower convex ribs are evenly spaced and arranged, and correspondingly, the plurality of upper convex ribs are also evenly spaced and arranged.

[0018] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that:

[0019] By coordinating the rotating mandrel and the positioning mandrel, and utilizing the cutting block and the wedge block to cooperate to promote the lateral horizontal movement of the wedge block, the forming mold can complete the twisting and riveting of the spring during the closing process, and the terminal can be formed in one step without the need to use multiple devices for multiple operations, thereby effectively improving production efficiency and facilitating the improvement of production capacity.

[0020] In order to more clearly illustrate the structural features and functions of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic diagram of a preferred embodiment of the utility model;

[0022] Figure 2 It is a cross-sectional schematic diagram of a preferred embodiment of the utility model;

[0023] Figure 3 It is a partial three-dimensional schematic diagram of a preferred embodiment of the utility model;

[0024] Figure 4 This is a schematic diagram of the first state of the manufacturing process of the preferred embodiment of the utility model;

[0025] Figure 5 This is a schematic diagram of the second state of the manufacturing process of the preferred embodiment of the utility model;

[0026] Figure 6 It is a schematic diagram of the third state of the manufacturing process of the preferred embodiment of the utility model;

[0027] Figure 7 It is a schematic diagram of the fourth state of the manufacturing process of the preferred embodiment of the utility model.

[0028] Description of the accompanying drawings:

[0029] 10. Lower mold 11. Lower base

[0030] 111, receiving groove 112, guide groove

[0031] 113, guide rail 114, fixed platform

[0032] 115, movable table 12, rotating seat

[0033] 121, rotating gear 122, rotating mandrel

[0034] 1221, lower flip bushing 1222, lower rib

[0035] 13. Driving assembly 131. Movable seat

[0036] 132, rack 133, wedge block

[0037] 14. Return spring 15. Adjustment spring

[0038] 101, lower positioning groove 102, concave cavity

[0039] 103, through hole 104, guide hole

[0040] 20. Upper mold 21. Upper base

[0041] 211, guide column 22, positioning mandrel

[0042] 221, upper flip bushing 222, upper rib

[0043] 23. Cutting blocks 24. Adjusting blocks

[0044] 201, upper positioning groove 30, product

[0045] 31. Reed 311. Twisted strip

[0046] 312, lower rivet strip 313, upper rivet strip

[0047] 32. Inner bushing 33. Outer bushing DETAILED DESCRIPTION

[0048] Please refer to Figures 1 to 7 As shown, it shows the specific structure of a riveted and twisted integrated terminal forming mold of a preferred embodiment of the utility model, including a lower mold 10 and an upper mold 20.

[0049] The lower mold 10 includes a lower base 11, a rotating base 12 and a driving assembly 13; the rotating base 12 can be rotatably arranged on the lower base 11, and has a rotating gear 121 and a rotating mandrel 122 on the rotating base 12. The rotating mandrel 122 is coaxially arranged with the rotating gear 121, and the rotating mandrel 122 extends upward from the surface of the lower base 11. The lower end of the rotating mandrel 122 has a lower flip bushing 1221, and the upper end of the rotating mandrel 122 is convexly provided with a plurality of lower ribs 1222, and the plurality of lower ribs 1222 are arranged at intervals in a circumferential circle, and each lower rib 1 222 extend up and down, a lower positioning groove 101 is formed between two adjacent lower ribs 1222, and the multiple lower ribs 1222 are evenly arranged; the driving component 13 can be arranged on the lower base 11 to be movable back and forth horizontally, and the driving component 13 is located on the side of the rotating seat 12. The driving component 13 includes a movable seat 131, a rack 132 and a wedge block 133. The rack 132 is fixed on the movable seat 131 and meshes with the rotating gear 121. The wedge block 133 is fixed on the movable seat 131 and extends upward from the surface of the lower base 11.

[0050] In this embodiment, the two sides of the lower base 11 are penetrated to form a receiving groove 111, and the surface of the lower base 11 is provided with a guide groove 112, which is connected to the receiving groove 111, and the movable seat 131 is located in the receiving groove 111. The wedge block 133 passes through the guide groove 112 and extends upward from the surface of the lower base 11. The wedge block 133 moves back and forth along the guide groove 112, and the structure is simple, the installation is stable, and the operation is smooth. In addition, the movable seat 131 can be installed in the receiving groove 111 by horizontally sliding back and forth through the guide rail 113, and the sliding is smooth and smooth. A return spring 14 that causes the movable seat 131 to return is connected between one end of the movable seat 131 and the lower base 11, so that the movable seat 131 returns automatically. In addition, an adjustment spring 15 for adjusting the rotation distance is arranged between the return spring 14 and the lower base 11.

[0051] Furthermore, the lower base 11 includes a fixed platform 114 and a movable platform 115, a concave cavity 102 is provided in the middle of the fixed platform 114, the movable platform 115 is adapted to the concave cavity 102 and is movably arranged in the concave cavity 102, the movable platform 115 is driven by an ejection spring (not shown) to move upward, a through hole 103 is provided in the center of the movable platform 115, and the rotating mandrel 122 extends upward from bottom to top through the through hole 103. Guide holes 104 are concavely provided at each corner of the surface of the lower base 11.

[0052] The upper mold 20 can be movably arranged up and down just above the lower mold 10, and the upper mold 20 includes an upper base 21, a positioning core rod 22 and a cutting block 23. The positioning core rod 22 is arranged on the upper base 21 and extends downward from the bottom surface of the upper base 21. The upper end of the positioning core rod 22 has an upper flip bushing 221, and the lower end of the rotating core rod 221 is convexly provided with a plurality of upper ribs 222, and the plurality of upper ribs 222 are arranged in a circumferential space, and each upper rib 222 extends up and down, and an upper positioning groove 201 is formed between two adjacent upper ribs 222; the cutting block 23 is arranged on the upper base 21 and cooperates with the wedge block 133 to promote the horizontal movement of the wedge block 133.

[0053] In this embodiment, guide posts 211 are provided at each corner of the bottom surface of the upper base 21. The guide posts 211 cooperate with the guide holes 104 for insertion and guidance, so that the upper mold 20 and the lower mold 10 can be accurately molded. In addition, an adjustment block 24 for adjusting the position of the positioning core rod 22 is provided on the upper base 21, which can be adjusted as needed to meet the needs of use. In addition, the multiple upper ribs 222 are evenly spaced.

[0054] The utility model also discloses a riveted and twisted integrated terminal forming method, which adopts the riveted and twisted integrated terminal forming die, and comprises the following steps:

[0055] (1) Prepare a spring leaf 31, an inner bushing 32 and two outer bushings 33. The spring leaf 31 is cylindrical. The middle of the spring leaf 31 has a plurality of twisted strips 311. The lower end of the spring leaf 31 has a plurality of lower rivet strips 312. The upper end of the spring leaf 31 has an upper rivet strip 313.

[0056] (2) The inner bushing 32 is sleeved on the outside of the middle part of the spring leaf 31 .

[0057] (3) The spring leaf 31 with the inner bushing 32 is installed on the rotating mandrel 122, and the multiple lower rivet strips 312 are respectively clamped in the corresponding lower positioning grooves 101, one of the outer bushings 33 is installed on the upper flip bushing 221, and the other outer bushing 33 is installed on the lower flip bushing 1221.

[0058] (4) The upper mold 20 moves downward to approach the lower mold 10 and closes the mold with the lower mold 10: first, the positioning core rod 22 and the rotating core rod 122 are closed to position the relative position of the spring leaf 31 and the inner bushing 32; then, the mold continues to close, the lower rivet pressure strip 312 and the upper rivet pressure strip 313 touch the lower flip bushing 1221 and the upper flip bushing 221 respectively, so that the lower rivet pressure strip 312 and the upper rivet pressure strip 313 are stretched open to prepare for flipping; then, the mold continues to close, the cutting block 23 collides with the wedge block 133 to drive the wedge block 133 to move to the left, so that the driving assembly 13 drives the rotating seat 12 to rotate, and the rotating core rod 122 rotates with the rotating seat 12 to twist the spring leaf 31. At the same time, the lower rivet pressure strip 312 and the upper rivet pressure strip 313 at the upper and lower ends of the spring leaf 31 are flipped 180° and riveted into the corresponding outer bushing 33 to complete the molding and assembly of the product 30.

[0059] (5) The upper mold 20 moves upward and away from the lower mold 10 to release the lower mold 10. The ejection spring ejects the assembled product 30 and floats it on the rotating core rod 122. At the same time, the drive assembly 13 is reset to take out the product 30.

[0060] The design focus of the utility model is that by coordinating the setting of a rotating core rod and a positioning core rod, and utilizing the cooperation between the cutting block and the wedge block to promote the lateral horizontal movement of the wedge block, the forming mold can complete the twisting and riveting of the spring sheet during the closing process, and the terminal can be formed in one step without using multiple devices for multiple operations, thereby effectively improving production efficiency and facilitating the improvement of production capacity.

[0061] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A riveting and twisting integrated terminal forming die, characterized in that: It includes a lower mold and an upper mold; The lower mold includes a lower base, a rotating base and a driving assembly; the rotating base can be rotatably arranged on the lower base, and a rotating gear and a rotating mandrel are provided on the rotating base, the rotating mandrel and the rotating gear are coaxially arranged, the rotating mandrel extends upward from the surface of the lower base, the lower end of the rotating mandrel is provided with a lower flip bushing, and the upper end of the rotating mandrel is convexly provided with a plurality of lower convex ribs, the plurality of lower convex ribs are arranged at intervals in a circumferential circle, each lower convex rib extends up and down, and a lower positioning groove is formed between two adjacent lower convex ribs; the driving assembly can be movably arranged on the lower base horizontally and back and forth, the driving assembly is located on the side of the rotating base, the driving assembly includes a movable seat, a rack and a wedge block, the rack is fixed on the movable seat and meshes with the rotating gear, and the wedge block is fixed on the movable seat and extends upward from the surface of the lower base; The upper mold can be movably arranged up and down just above the lower mold, and the upper mold includes an upper base, a positioning core rod and a cutting block. The positioning core rod is arranged on the upper base and extends downward from the bottom surface of the upper base, and the upper end of the positioning core rod is provided with an upper flip bushing. The lower end of the rotating core rod is convexly provided with a plurality of upper ribs, and the plurality of upper ribs are arranged at intervals in a circle, each upper rib extends up and down, and an upper positioning groove is formed between two adjacent upper ribs; the cutting block is arranged on the upper base and cooperates with the wedge block to promote the horizontal movement of the wedge block.

2. The riveting and twisting integrated terminal forming die according to claim 1, characterized in that: The two sides of the lower base are penetrated to form a receiving groove, and the surface of the lower base is provided with a guide groove, which is connected to the receiving groove. The movable seat is located in the receiving groove, and the wedge block extends upward through the guide groove to the surface of the lower base, and the wedge block moves back and forth along the guide groove.

3. The riveting, twisting and integrated terminal forming die according to claim 2, characterized in that: The movable seat is installed in the accommodating groove in a horizontally slidable manner back and forth via a guide rail.

4. The riveting, twisting and integrated terminal forming die according to claim 2, characterized in that: A return spring piece for causing the movable seat to return is connected between one end of the movable seat and the lower base.

5. The riveting, twisting and integrated terminal forming die according to claim 4, characterized in that: An adjusting spring for adjusting the rotation distance is arranged between the return spring piece and the lower base.

6. The riveting, twisting and integrated terminal forming die according to claim 1, characterized in that: Guide holes are recessed at each corner of the surface of the lower base, and correspondingly, guide columns are disposed at each corner of the bottom surface of the upper base, and the guide columns cooperate with the guide holes for insertion and guidance.

7. The riveting, twisting and integrated terminal forming die according to claim 1, characterized in that: The upper base is provided with an adjustment block for adjusting the position of the positioning core rod.

8. The riveting, twisting and integrated terminal forming die according to claim 1, characterized in that: The lower base includes a fixed platform and a movable platform. A concave cavity is opened in the middle of the fixed platform. The movable platform is adapted to the concave cavity and can be movably arranged in the concave cavity up and down. The movable platform is driven by an ejection spring to move upward. A through hole is opened in the center of the movable platform. The rotating core rod extends upward from bottom to top through the through hole.

9. The riveting, pressing and twisting integrated terminal forming die according to claim 1, characterized in that: The multiple lower ribs are evenly spaced and arranged, and correspondingly, the multiple upper ribs are also evenly spaced and arranged.

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