A micro rectangular connector pin forming fixture

Abstract

A micro rectangular connector pin forming fixture includes a base module, left and right sliders, a pre-bending module, and an upper pressure module; the base module includes a base, a support block, a slider assembly, a spring assembly, a positioning assembly, and a limit assembly; the left and right sliders are arranged on both sides of the base module and are slidably connected to the base module; the pre-bending module and the upper pressure module are arranged on the upper part of the base module and are plugged into the base module respectively. Through the implementation of the present invention, the integration of pre-bending, cutting, and flattening functions during connector assembly is achieved, effectively reducing the risk of pin damage during fixture replacement. At the same time, by adjusting the compression ratio of the spring assembly and thereby changing the relative distance between the two positioning sliders, the versatility of the fixture for connector products with different core counts in the same series is achieved. In addition, the fixture is simple to operate and highly adaptable. One fixture can be used to assemble products with different core counts and multiple processes, thereby improving the production efficiency of micro rectangular connectors and effectively controlling production costs.

Description

Technical Field

[0001] The invention belongs to the technical field of electric connector manufacturing, and in particular relates to a micro rectangular connector pin forming fixture. Background Art

[0002] During electrical assembly, connector pins are bent and formed according to technical requirements before being soldered to the printed circuit board. The primary assembly steps involve pre-bending, cutting, and flattening the pins. Existing pin forming fixtures only perform a single function and lack integrated tooling. This necessitates the replacement of different fixtures during assembly, which can easily damage and deform the pins. Existing pin forming fixtures require different fixtures for connectors with different pin counts within the same series, preventing universal fixture versatility and increasing production cycles and costs. Summary of the Invention

[0003] In order to solve the above technical problems, the present invention provides a micro rectangular connector pin forming fixture to address the shortcomings of the existing technology. The fixture can complete the three processes of pin pre-bending, cutting and flattening, and achieve the versatility of products with different core numbers in the same series.

[0004] The present invention is achieved through the following technical solutions.

[0005] The present invention provides a micro rectangular connector pin forming fixture, which includes a base module, left and right sliders, a pre-bending module and an upper pressing module; the base module includes a base, a support block, a slider assembly, a spring assembly, a positioning assembly and a limit assembly, the base is provided with a positioning groove along the center line, guide holes are provided on both sides of the positioning groove, the limit assembly is provided on both sides of the base, the support block is fixedly connected to the positioning groove provided in the base through the limit assemblies located on both sides of the base module, a directional column and a spring assembly are provided on the upper part of the support block, the spring assembly is fixedly connected to the slider assembly through the directional column, and the positioning assembly locks the slider assembly, the support block and the base through the positioning hole of the slider assembly; the left and right The slider includes a left slider, a right slider, a left spring assembly, a right spring assembly, a first limiting screw and a second limiting screw, the left slider and the right slider are symmetrically distributed on both sides of the base and are slidably connected to the base, one end of the left spring assembly is fixedly connected to the left slider, and the other end of the left spring assembly is fixedly connected to one side of the base, the first limiting screw passes through the left slider and the left spring assembly in sequence and is locked and connected to the base, one end of the right spring assembly is fixedly connected to the right slider, and the other end of the right spring assembly is fixedly connected to the other side of the base, the second limiting screw passes through the right slider, the right spring assembly and the base in sequence; the pre-bending module includes an upper die seat, a V-shaped tool, a first bevel wedge assembly, a first lock The tightening assembly, the first pin and the first guide column assembly, the first bevel wedge assembly includes two bevels, the two bevels are arranged on both sides of the upper die base relatively, and a rectangular through hole is provided at the center position of the upper surface of the upper die base, the V-shaped tool is installed inside the rectangular through hole of the upper die base and is fixedly connected to the upper die base, the first pin passes through the through holes of the upper die base, the V-shaped tool and the first bevel wedge assembly in sequence to connect the upper die base, the V-shaped tool and the first bevel wedge assembly into one; one end of the first guide column assembly is fixedly connected to the upper die base, and the other end is plugged into the guide hole of the base; the upper pressure module includes an upper pressure block, a cutting knife, a second bevel wedge assembly, a second locking assembly, a spring screw assembly, a second pin, a pre-tightening screw And the second guide column assembly, two rectangular through holes are provided on the upper part of the upper pressure block, the cutting knife is slidably connected to the upper pressure block, one end of the spring screw assembly is fixed to the upper surface of the upper pressure block, and the other end is against the lower end of the cutting knife, the second oblique wedge assembly includes two oblique wedges, and the two oblique wedges are relatively arranged on both sides of the upper pressure block, and a through hole is provided inside the cutting knife. The second pin passes through the second oblique wedge assembly, the upper pressure block and the through holes of the cutting knife in sequence to connect the second oblique wedge assembly, the upper pressure block and the cutting knife into one, the pre-tightening screw is slidably connected to the cutting knife through the pre-tightening force, one end of the second guide column assembly is fixedly connected to the upper pressure block, and the other end of the second guide column assembly is plug-connected with the guide hole of the base.

[0006] Furthermore, the pre-bending module also includes a first locking assembly, which includes four locking screws. The four locking screws of the first locking assembly are distributed on both sides of the upper mold base in pairs of two. Each bevel wedge of the first bevel wedge assembly is locked to the upper mold base through a pair of locking screws distributed on both sides of the upper mold base.

[0007] Furthermore, the upper pressure module also includes a second locking assembly, which includes four locking screws. The four locking screws of the second locking assembly are distributed on both sides of the upper pressure block in pairs of two. Each wedge of the second wedge assembly is locked to the upper pressure block through a pair of locking screws distributed on both sides of the upper pressure block.

[0008] Furthermore, the through hole provided inside the cutting blade is an elliptical through hole.

[0009] Furthermore, a 3° flattened surface is symmetrically provided along the center line between the two rectangular through holes provided at the bottom of the upper pressing block.

[0010] Furthermore, the spring screw assembly includes four spring screws, which are evenly distributed on the upper surface of the upper pressing block.

[0011] Furthermore, a threaded hole is provided on the upper surface of the upper pressing block, and the spring screws of the spring screw assembly are fixed on the upper pressing block through the threaded hole of the upper pressing block.

[0012] Furthermore, there are two guide holes, which are asymmetrically distributed on both sides of the guide groove.

[0013] Furthermore, the first guide column assembly has two guide columns, and the two guide columns are both fixed on the lower end surface of the upper mold base, and the positions correspond to the guide holes.

[0014] Furthermore, the second guide post assembly has two guide posts, and both guide posts are fixed on the lower end surface of the upper pressing block, with positions corresponding to the guide holes.

[0015] The beneficial effects of the present invention are: through the implementation of the present invention, a micro-rectangular connector pin forming fixture is provided, which integrates the pre-bending, cutting and flattening functions during the connector assembly process, realizes the integration of tooling fixtures, improves the production efficiency of connector products, and effectively reduces the risk of pin damage during fixture replacement. At the same time, by adjusting the compression ratio of the spring assembly and thereby changing the relative distance between the two positioning sliders, the versatility of the fixtures for connector products with different core numbers in the same series is achieved. In addition, the fixture is simple to operate and has strong adaptability. One fixture can realize the assembly of products with different core numbers and multiple processes, thereby improving the production efficiency of micro-rectangular connectors and effectively controlling production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1This is a schematic diagram of the fixture structure for the pin forming pre-bending process;

[0017] Figure 2 This is a schematic diagram of the fixture structure for the pin forming, cutting and flattening process;

[0018] Figure 3 It is a schematic diagram of the pre-bending module structure;

[0019] Figure 4 This is the main view of the pre-bent module structure;

[0020] Figure 5 It is a schematic diagram of the upper pressure module structure;

[0021] Figure 6 This is the main view of the upper pressure module structure;

[0022] Figure 7 is a schematic diagram of the base module structure;

[0023] Figure 8 is a schematic diagram of the support block structure;

[0024] Figure 9 It is a schematic diagram of the left and right slider structures;

[0025] Figure 10 It is an axonometric view of the pre-bend knife;

[0026] Figure 11 It is an axonometric view of the cutting knife;

[0027] Figure 12 Schematic diagram of the structure of the micro rectangular connector to be processed according to the present invention;

[0028] In the figure: 1-base module; 2-pre-bending module; 3-left and right sliders; 4-upper pressure module; 5-first bevel wedge assembly; 6-first pin; 7-first locking assembly; 8-upper die base; 9-V-shaped tool; 10-first guide column assembly; 11-second bevel wedge assembly; 12-preload screw; 13-second locking assembly; 14-second pin; 15-cutting knife; 16-spring screw assembly; 17-upper pressure block; 18-second guide column assembly; 19-base; 20-support block; 21-guide hole; 22-limiting assembly; 23-first directional column assembly; 24-first spring assembly; 25-positioning assembly; 26-slider assembly; 27-second directional column assembly; 28-second spring assembly; 29-first limiting screw; 30-left slider; 31-left spring assembly; 32-right spring assembly; 33-right slider; 34-second limiting screw. DETAILED DESCRIPTION

[0029] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0030] Specific implementation method 1: The micro rectangular connector to be processed is as follows: Figure 12 As shown, its pins are located at its upper end, as Figure 1-2 As shown, this embodiment provides a forming fixture for processing the pins of the micro-rectangular connector. The pin forming fixture includes a base module 1, a pre-bending module 2, left and right sliders 3, and an upper pressing module 4. The left and right sliders 3 are arranged on both sides of the base module 1 and are slidably connected to the base module 1. The pre-bending module 2 and the upper pressing module 4 are arranged on the upper part of the base module 1 and are respectively plugged into the base module 1. This embodiment provides a micro-rectangular connector pin forming fixture. The fixture can complete the three processes of pre-bending, cutting, and flattening the pins, optimizing the assembly process and improving the production efficiency of the connector product. The fixture has a simple structural design and is easy to operate. This fixture uses stamping equipment to provide the positive pressure required for each process.

[0031] Specific implementation method 2: refer to Figure 3 、 Figure 4 and Figure 10 Describe this embodiment. This embodiment further limits the pre-bending module 2 described in the specific embodiment 1. In this embodiment, the pre-bending module 2 includes a first bevel wedge assembly 5, a first pin 6, a first locking assembly 7, an upper die base 8 and a V-shaped tool 9. The first locking assembly includes 4 locking screws. The first bevel wedge assembly includes a No. 1 bevel wedge and a No. 2 bevel wedge. The No. 1 bevel wedge and the No. 2 bevel wedge are symmetrically arranged on both sides of the upper die base, and each bevel wedge is locked to the upper die base by 2 locking screws. A rectangular through hole is provided in the center of the upper surface of the upper die base 8. The V-shaped tool 9 is built into the rectangular through hole and is in contact and fixed with the upper die base 8. One end of the first pin 6 passes through the through holes of the first bevel wedge assembly 5, the upper die base 8 and the pre-bending tool 9 in turn, and is fixedly connected to the first bevel wedge assembly 5, the upper die base 8 and the V-shaped tool 9. In this embodiment, the pre-bending module 2 is a mechanism for realizing the pre-bending process of the pin. The stamping equipment applies positive pressure to the upper surface of the upper die base 8, and the tool fixed to the upper die base pre-bends the pin at a certain angle. The pre-bending angle is 110° to ensure the realization of the pre-bending function while avoiding the needle-butting phenomenon. One end of the first guide column assembly 10 of the pre-bending module 2 is fixedly connected to the upper die base 8 by a pre-tightening force, and the other end is plugged into the guide hole of the base module 1.

[0032] Specific implementation method three: refer to Figure 5 、 Figure 6 and Figure 11Explain this embodiment, this embodiment is to further limit the upper pressure module described in the specific embodiment 1. In this embodiment, the upper pressure module 4 includes a second bevel wedge component 12, a pre-tightening screw 12, a second locking component 13, a second pin 14, a cutting knife 15, a spring screw component 16 and an upper pressure block 17. The upper surface of the upper pressure block 17 is provided with two rectangular through holes along the center line. The two blades of the cutting knife 15 are built into the rectangular through holes and are slidably connected to the upper pressure block 17. The spring screw component 16 includes four spring screws, and each spring screw is connected to the lower surface of the cutting knife through the threaded hole of the upper pressure block 17. Surface contact fixation, the second locking assembly 13 includes 4 locking screws, the second bevel wedge assembly 12 includes a No. 3 bevel wedge and a No. 4 bevel wedge, the No. 3 bevel wedge and the No. 4 bevel wedge are symmetrically arranged on both sides of the upper pressure block 17, and each bevel wedge is locked and connected to the upper pressure block 17 by 2 locking screws, an elliptical through hole is provided inside the cutting knife 15, one end of the second pin 14 passes through the through holes of the second bevel wedge assembly 11, the upper pressure block 17 and the cutting knife 15 in turn, and is fixedly connected to the second bevel wedge assembly 11 and the upper pressure block 17, and is plugged into the cutting knife, and the pre-tightening screw 12 is slidably connected to the cutting knife 15 through the pre-tightening force. In this embodiment, the upper pressure module 4 is a mechanism used to implement the pin cutting and flattening process. Positive pressure is applied to the upper surface of the cutting knife 15 through the stamping equipment. The cutting knife 15 compresses the spring screw assembly to slide downward to achieve the cutting of the pin. A 3° flattening surface is symmetrically provided along the center line between the two rectangular through holes at the bottom of the upper pressure block 17 to achieve the flattening of the pin after cutting. The slight excessive bending of the pin can effectively offset the rebound of the pin after bending, ensuring that the upper end face of the pin after bending is level with the upper end face of the shell. The elliptical through hole of the cutting knife 15 is designed to ensure that the cutting knife 14 does not separate from the upper pressure block during the rebound process after cutting. One end of the second guide column assembly 18 of the upper pressure module 4 is fixedly connected to the upper pressure block 17, and the other end is plugged into the guide hole of the base module 1.

[0033] Specific implementation method four: refer to Figure 7 This embodiment further defines the base module 1 described in Specific Embodiment 1. In this embodiment, the base module 1 includes a base 19, a support block 20, a guide hole 21, and a limit assembly 22. The base 19 is provided with a positioning groove along the centerline. The support block 20 is fixed in the base positioning groove by the limit assemblies 22 located on both sides of the base module. The guide holes 21 are respectively plugged into and connected with the first guide column assembly 10 of the pre-bending module 2 and the second guide column assembly 18 of the upper pressure module 4. In this embodiment, the base module 1 serves as a support and clamping mechanism for the connector product. To ensure the positional accuracy of the support block, limit holes symmetrical about the center are provided on both sides of the base. The support block 20 and the base are locked and connected by the limit assembly 22.

[0034] Specific implementation method five: refer to Figure 8 This embodiment further defines the base module 1 described in Specific Embodiment 4. In this embodiment, the support block 20 of the base module 1 includes a first directional post assembly 23, a first spring assembly 24, a positioning assembly 25, a slider assembly 26, a second directional post assembly 27, and a second spring assembly 28. The slider assembly 26 includes two positioning sliders. The first spring assembly 24 is fixedly connected to one positioning slider via the first directional post assembly 23, and the second spring assembly 28 is fixedly connected to the other positioning slider via the second directional post assembly 27. The positioning assembly 25 includes two positioning screws, each of which locks the positioning slider, the support block 20, and the base 19 through a positioning hole. In this embodiment, the support block 20 serves as a support and clamping mechanism for the connector product. By adjusting the compression ratio of the two spring assemblies and changing the relative distance between the two positioning sliders in the slider assembly 26, it is possible to clamp and support products of the same series with different numbers of cores. To ensure the positioning accuracy of the two positioning sliders, the positioning screws 26 are provided to ensure symmetry of the relative distance between the two sliders about the vertical centerline.

[0035] Specific implementation method six: refer to Figure 9 This embodiment further defines the left and right sliders 3 described in the first embodiment. In this embodiment, the left and right sliders include a first limit screw 29, a left slider 30, a left spring assembly 31, a right spring assembly 32, a right slider 33, and a second limit screw 34. The left slider 30 is slidably connected to the base 19 through the left spring assembly 31 and the first limit screw 29, and the right slider 33 is slidably connected to the base 19 through the right spring assembly 32 and the second limit screw 34. In this embodiment, when the left and right sliders are in the working state, the relative distance between the left and right sliders is large, which is convenient for the installation of connector products. During operation, as the pre-bending module 2 and the upper pressure module 4 are pressed downward, the spring components of the left and right sliders are in a compressed state under the action of the wedge component to ensure that the connector pins are located in the pin grooves of the left and right sliders, and play a role in supporting the bending points of the pins, realizing the pre-bending, cutting and flattening processes. In order to avoid damage to the pins during the movement of the left and right sliders, the lower end faces of the pre-bending module and the upper pressure module wedge components and the upper end faces of the left and right sliders are designed at a 15° angle to reduce the impact caused by the contact between the wedge components and the sliders.

Claims

1. A micro rectangular connector pin forming fixture, characterized by: It includes base module, left and right slide blocks, pre-bending module and upper pressing module; The base module includes a base, a support block, a slider assembly, a spring assembly, a positioning assembly and a limit assembly. The base is provided with a positioning groove along the center line, and guide holes are provided on both sides of the positioning groove. The limit assemblies are provided on both sides of the base. The support block is fixedly connected to the positioning groove provided in the base through the limit assemblies located on both sides of the base module. A directional column and a spring assembly are provided on the upper part of the support block. The spring assembly is fixedly connected to the slider assembly through the directional column. The positioning assembly locks the slider assembly, the support block and the base through the positioning hole of the slider assembly; The left and right sliders include a left slider, a right slider, a left spring assembly, a right spring assembly, a first limiting screw, and a second limiting screw, the left slider and the right slider are symmetrically distributed on both sides of the base and are slidably connected to the base, one end of the left spring assembly is fixedly connected to the left slider, and the other end of the left spring assembly is fixedly connected to one side of the base, the first limiting screw sequentially passes through the left slider and the left spring assembly and is locked and connected to the base, one end of the right spring assembly is fixedly connected to the right slider, and the other end of the right spring assembly is fixedly connected to the other side of the base, and the second limiting screw sequentially passes through the right slider, the right spring assembly, and the base and is locked; The pre-bending module includes an upper die base, a V-shaped tool, a first oblique wedge assembly, a first locking assembly, a first pin and a first guide column assembly, the first oblique wedge assembly includes two oblique wedges, and the two oblique wedges are arranged on both sides of the upper die base opposite to each other, a rectangular through hole is provided at the center position of the upper surface of the upper die base, the V-shaped tool is installed inside the rectangular through hole of the upper die base and is fixedly connected to the upper die base, the first pin passes through the through holes of the upper die base, the V-shaped tool and the first oblique wedge assembly in sequence to connect the upper die base, the V-shaped tool and the first oblique wedge assembly into one; one end of the first guide column assembly is fixedly connected to the upper die base, and the other end is plug-connected to the guide hole of the base; The upper pressure module includes an upper pressure block, a cutting knife, a second oblique wedge assembly, a second locking assembly, a spring screw assembly, a second pin, a pre-tightening screw and a second guide column assembly, two rectangular through holes are provided on the upper part of the upper pressure block, the cutting knife is slidably connected to the upper pressure block, one end of the spring screw assembly is fixed to the upper surface of the upper pressure block, and the other end is against the lower end of the cutting knife, the second oblique wedge assembly includes two oblique wedges, and the two oblique wedges are relatively arranged on both sides of the upper pressure block, and a through hole is provided inside the cutting knife, and the second pin passes through the second oblique wedge assembly, the upper pressure block and the through holes of the cutting knife in sequence to connect the second oblique wedge assembly, the upper pressure block and the cutting knife into one, the pre-tightening screw is slidably connected to the cutting knife through the pre-tightening force, one end of the second guide column assembly is fixedly connected to the upper pressure block, and the other end of the second guide column assembly is plugged into the guide hole of the base.

2. The micro rectangular connector pin forming fixture according to claim 1, wherein: The pre-bending module also includes a first locking assembly, which includes four locking screws. The four locking screws of the first locking assembly are distributed on both sides of the upper mold base in pairs of two. Each bevel wedge of the first bevel wedge assembly is locked to the upper mold base through a pair of locking screws distributed on both sides of the upper mold base.

3. The micro rectangular connector pin forming fixture according to claim 1, wherein: The upper pressure module also includes a second locking assembly, which includes four locking screws. The four locking screws of the second locking assembly are distributed on both sides of the upper pressure block in pairs of two. Each wedge of the second wedge assembly is locked to the upper pressure block through a pair of locking screws distributed on both sides of the upper pressure block.

4. The micro rectangular connector pin forming fixture according to claim 1, wherein: The through hole arranged inside the cutting knife is an elliptical through hole.

5. The micro rectangular connector pin forming fixture according to claim 1, wherein: A 3° flattened surface is symmetrically provided along the center line between the two rectangular through holes provided at the bottom of the upper pressing block.

6. The micro rectangular connector pin forming fixture according to claim 1, wherein: The spring screw assembly includes four spring screws, which are evenly distributed on the upper surface of the upper pressing block.

7. The micro rectangular connector pin forming fixture according to claim 6, wherein: The upper surface of the upper pressing block is provided with threaded holes, and the spring screws of the spring screw assembly are all fixed on the upper pressing block through the threaded holes of the upper pressing block.

8. The micro rectangular connector pin forming fixture according to claim 1, wherein: There are two guide holes, which are asymmetrically distributed on both sides of the guide groove.

9. The micro rectangular connector pin forming fixture according to claim 8, wherein: The first guide post assembly has two guide posts, and both guide posts are fixed on the lower end surface of the upper die base, and their positions correspond to the guide holes.

10. The micro rectangular connector pin forming fixture according to claim 8, wherein: The second guide post assembly has two guide posts, and both guide posts are fixed on the lower end surface of the upper pressing block, and the positions thereof correspond to the guide holes.

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