Bending device for special-shaped mini-fit contact pin

Abstract

A bending device for a special-shaped mini-fit contact pin comprises a base plate and a bending tool fixed to the base plate, the bending tool comprises an outer ring fixed to the base plate and a rotating disc which is driven by a driving mechanism to be rotationally matched in the inner circle of the outer ring, a positioning column vertically extending upwards is fixedly arranged on the outer ring, and the positioning column is fixedly arranged on the base plate. A turnover column vertically extending upwards is fixedly arranged on the rotary disc, one side wall of the positioning column is an inclined face and is matched with the inclined angle of the inclined face of the mini-fit base to form a positioning face, the side wall, facing the turnover column, of the positioning column forms a limiting face, and the included angle alpha between the limiting face and the positioning face is 90 degrees. The side wall, facing the positioning column, of the folding column forms a folding face, a spacing distance is formed between the folding face and the limiting face, the starting included angle beta between the folding face and the positioning face is matched with the angle between the contact pin and the inclined face of the mini-fit base, and the ending included angle gamma between the folding face and the positioning face is 90 degrees. The pin bending device is simple in structure, low in manufacturing cost and capable of efficiently and stably bending pins assembled by mini-fit, and product quality is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of electronic processing, and in particular to a bending device for irregularly shaped mini-fit pins. Background Technology

[0002] Mini-fit is a blind-mating connector.

[0003] See Figure 1 This is an irregularly shaped mini-fit. The base of this mini-fit has a flat bottom and a sloping top. Slots are provided on both the bottom and top surfaces, with the bottom of these slots perpendicular to the height of the base. These slots are connected by multiple mounting holes extending along the height direction, arranged in a 2x3 matrix and evenly spaced along the length of the mini-fit base. The two side walls of the mini-fit base are equipped with latches and buckles, extending above the high and low ends of the sloping base, respectively.

[0004] After the Mini-fit base is formed, socket-type terminals need to be installed in the mounting holes of the bottom slot, flush with the bottom of the slot. Pin-type terminals need to be installed in the mounting holes of the top slot, and the pins are required to be at the same height above the slope and be distributed perpendicular to the slope.

[0005] The pre-assembly process involves pre-assembling the pins into the sockets in the slots at the top of the base. Then, a pressing process ensures that the three rows of pins have different insertion depths and consistent heights above the bevel. A bending process is then performed to bend the protruding ends of each pin at an angle, ensuring that the protruding ends of each row of pins are perpendicular to the bevel and have a consistent protrusion height. Currently, manually bending the protruding ends of the pins using self-made tools cannot guarantee a stable bending angle, affecting product quality.

[0006] Therefore, designing a low-cost tooling that can assist manual bending of these irregularly shaped mini-fit pins quickly and stably is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0007] The purpose of this invention is to address the shortcomings of existing technologies by providing a bending device for irregularly shaped mini-fit pins. This device has a simple structure, low manufacturing cost, and can efficiently and stably bend the pins assembled in mini-fit, thus ensuring product quality.

[0008] The technical solution to achieve the purpose of this utility model is: a bending device for irregularly shaped mini-fit pins, including a substrate and a bending fixture fixed on the substrate. The bending fixture includes an outer ring fixed on the substrate and a turntable driven by a driving mechanism to rotate and cooperate in the inner ring of the outer ring. A positioning post extending vertically upward is fixedly provided on the outer ring, and a folding post extending vertically upward is fixedly provided on the turntable. One side wall of the positioning post is inclined and adapts to the inclination angle of the inclined surface of the mini-fit base to form a positioning surface. The side wall of the positioning post facing the folding post forms a limiting surface, and the included angle α between the limiting surface and the positioning surface is 90°. The side wall of the folding post facing the positioning post forms a folding surface and has a gap distance from the limiting surface. The starting included angle β between the folding surface and the positioning surface adapts to the angle of the pin and the inclined surface of the mini-fit base, and the ending included angle γ between the folding surface and the positioning surface is 90°.

[0009] The positioning post has a first clearance notch on its side wall away from the folding post.

[0010] A second clearance notch is provided on the side wall of the folding post away from the positioning post.

[0011] A pressure block is fixedly installed on the outer ring, and the pressure block extends above the turntable to form an axial limit on the turntable.

[0012] A through notch is provided on the side wall of the outer ring, and a drive rod is fixedly provided on the side wall of the turntable. The drive rod extends out of the outer ring through the notch and is hinged to the piston rod of a telescopic cylinder to drive the turntable to rotate.

[0013] The base plate is provided with a first limiting seat and a second limiting seat, located on both sides of the drive rod.

[0014] The above technical solution has the following beneficial effects:

[0015] 1. A bending device for irregularly shaped mini-fit pins includes a substrate and a bending fixture fixed on the substrate. The bending fixture is used to bend the extended ends of the mini-fit pins after press-fitting, ensuring that the extended ends of each pin are perpendicular to the top surface of the mini-fit base, thus obtaining the finished product. The bending fixture includes an outer ring fixed on the substrate and a turntable driven by a driving mechanism to rotate within the inner ring of the outer ring. A vertically upward-extending positioning post is fixedly disposed on the outer ring, and a vertically upward-extending folding post is fixedly disposed on the turntable. That is, the positioning post is fixed in position, and the folding post can rotate around a certain angle in the circumferential direction. One side wall of the positioning post is inclined, and its inclination angle is adapted to the inclined surface of the mini-fit base to form a positioning surface. The side wall of the positioning post facing the folding post forms a limiting surface, and the included angle α between the limiting surface and the positioning surface is 90°. The side wall of the folding post facing the positioning post forms a folding surface, and it has a gap distance from the limiting surface. The starting angle β between the folding surface and the positioning surface is adapted to the angle between the pin and the inclined surface of the mini-fit base. The ending angle γ between the folding surface and the positioning surface is 90°. After being pressed, the pins of the mini-fit intermediate product are sequentially inserted into the gap space between the folding post and the positioning post, and the top surface of the mini-fit intermediate product cooperates with the positioning surface of the positioning post. Through the cooperation of the positioning surface, the limiting surface, and the folding surface, the purpose of mechanically bending the protruding ends of each row of pins to be perpendicular to the top surface of the mini-fit base is achieved, which effectively reduces the intensity of manual labor and ensures product stability.

[0016] 2. A first clearance notch is provided on the side wall of the positioning post away from the folding post, and a second clearance notch is provided on the side wall of the folding post away from the positioning post. When the mini-fit intermediate product mates with the positioning surface through the top surface, and one row of pins is inserted into the gap space between the positioning post and the folding post, the pins on one or both sides of the row of pins are cleared by the first clearance notch and / or the second clearance notch, so as to avoid interference between the mini-fit intermediate product and the positioning post and / or the folding post when bending.

[0017] 3. A pressure block is fixedly installed on the outer ring. The pressure block extends above the turntable and forms an axial limit on the turntable. The turntable is circumferentially limited by the outer ring and axially limited by the pressure block, which ensures that the turntable rotates stably in the outer ring and is easy to install and disassemble, reducing processing costs and usage and maintenance costs.

[0018] 4. The base plate is provided with a first limiting seat and a second limiting seat, located on both sides of the drive rod, corresponding to the start position and end position of the turntable respectively, to ensure the precise rotation angle range of the turntable, thereby ensuring the precise bending angle of the protruding ends of each row of pins, and ensuring the quality of the mini-fit product.

[0019] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the irregular mini-fit structure in the background technology;

[0021] Figure 2 This is a schematic diagram showing the connection between the bending device and the substrate of this utility model;

[0022] Figure 3 This is a schematic diagram of the starting angle structure of the bending device of this utility model;

[0023] Figure 4 This is a schematic diagram of the termination angle structure of the bending device of this utility model;

[0024] Figure 5 This is a diagram showing the initial bending state of the bending device and the mini-fit intermediate product of this utility model.

[0025] Figure 6 This is a diagram showing the bending termination state of the bending device and the mini-fit intermediate product of this utility model.

[0026] In the attached diagram, 1 is the substrate, 3 is the bending fixture, 10 is the outer ring, 11 is the turntable, 12 is the positioning post, 12a is the positioning surface, 12b is the limiting surface, 12c is the first clearance notch, 13 is the folding post, 13a is the folding surface, 13b is the second clearance notch, 14 is the pressure block, 15 is the notch, 16 is the drive rod, 17 is the telescopic cylinder, 18 is the first limiting seat, and 19 is the second limiting seat. Detailed Implementation

[0027] Example

[0028] See Figures 2 to 6This is a specific embodiment of a bending device for irregularly shaped mini-fit pins. The bending device for irregularly shaped mini-fit pins includes a base plate 1 and a bending fixture 3 fixed on the base plate. The bending fixture 3 includes an outer ring 10 fixed on the base plate and a turntable 11 driven by a driving mechanism to rotate and engage in the inner ring of the outer ring. In this embodiment, the top surface of the turntable is lower than the top surface of the outer ring. Specifically, a pressure block 14 is fixedly provided on the outer ring 10. The pressure block 14 extends above the turntable 11 to form an axial limit on the turntable 11. A through notch 15 is provided on the side wall of the outer ring 10. A driving rod 16 is fixedly provided on the side wall of the turntable 11. The driving rod 16 extends out of the outer ring 10 through the notch 15 and is hinged to the piston rod of a telescopic cylinder 17 to drive the turntable to rotate. In order to limit the starting angle and ending angle of the turntable rotation, a first limiting seat 18 and a second limiting seat 19 are provided on the base plate 1, located on both sides of the driving rod 16. A vertically upward-extending positioning post 12 is fixedly installed on the outer ring 10, and a vertically upward-extending folding post 13 is fixedly installed on the turntable 11. Specifically, a part of the positioning post extends to the top of the turntable and is no longer in contact with the turntable, and a part of the folding post extends to the outer ring and is no longer in contact with the outer ring by means of hollowing out. One side wall of the positioning post 12 is inclined and its inclination angle is adapted to that of the inclined surface of the mini-fit base, forming a positioning surface 12a. The side wall of the positioning post 12 facing the folding post 13 forms a limiting surface 12b, and the included angle α between the limiting surface 12b and the positioning surface 12a is 90°. The side wall of the folding post 13 facing the positioning post 12 forms a folding surface 13a, and it has a gap distance from the limiting surface 12b. The starting angle β between the folding surface 13a and the positioning surface 12a is adapted to the angle between the pin and the inclined surface of the mini-fit base. The ending angle γ between the folding surface 13a and the positioning surface 12a is 90°. In this embodiment, a first clearance notch 12c is provided on the side wall of the positioning post 12 away from the folding post 13, and a second clearance notch 13b is provided on the side wall of the folding post 13 away from the positioning post 12.

[0029] Example

[0030] The method for bending the protruding end of the mini-fit intermediate insert using the bending device of Example 1 includes the following steps:

[0031] 1) Take the pressed mini-fit intermediate product (the insertion depth of the three rows of pins is different, the height above the inclined surface of the mini-fit base is the same, and they all extend along the height of the mini-fit base), place it on the outer ring, and the inclined surface is attached to the positioning surface of the positioning post. The first row of pins near the lower end of the inclined surface is inserted into the space between the positioning post and the folding post.

[0032] 2) Control the folding column to rotate from the starting angle to the ending angle, bend the first row of pins so that they are perpendicular to the top surface of the mini-fit base, and then reset the folding column;

[0033] 3) Manually move the intermediate product so that the inclined surface fits against the positioning surface of the positioning post, and the second row of pins is inserted into the space between the positioning post and the folding post. Control the folding post to rotate from the starting angle to the ending angle, bend the second row of pins so that they are perpendicular to the top surface of the mini-fit base, and the folding post is reset.

[0034] 4) Manually move the intermediate product so that the inclined surface fits against the positioning surface of the positioning post, and the third row of pins is inserted into the space between the positioning post and the folding post. Control the folding post to rotate from the starting angle to the ending angle, bend the third row of pins so that they are perpendicular to the top surface of the mini-fit base, and reset the folding post to obtain the finished product.

Claims

1. A bending device for irregularly shaped mini-fit pins, characterized in that: It includes a substrate (1) and a bending fixture (3) fixed on the substrate. The bending fixture (3) includes an outer ring (10) fixed on the substrate and a turntable (11) driven by a driving mechanism to rotate and fit in the inner ring of the outer ring. A vertically extending positioning post (12) is fixedly provided on the outer ring (10), and a vertically extending folding post (13) is fixedly provided on the turntable (11). One side wall of the positioning post (12) is inclined and adapts to the inclined angle of the mini-fit base to form a positioning surface (12a). The positioning post (12) faces the folding surface. The sidewall of the folding column (13) forms a limiting surface (12b), and the angle α between the limiting surface (12b) and the positioning surface (12a) is 90°. The sidewall of the folding column (13) facing the positioning column (12) forms a folding surface (13a), and has a gap distance with the limiting surface (12b). The starting angle β between the folding surface (13a) and the positioning surface (12a) is adapted to the angle of the pin and the inclined surface of the mini-fit base. The ending angle γ between the folding surface (13a) and the positioning surface (12a) is 90°.

2. The bending device for the irregularly shaped mini-fit pin according to claim 1, characterized in that: The positioning post (12) has a first clearance notch (12c) on its side wall away from the folding post (13).

3. The bending device for the irregularly shaped mini-fit pin according to claim 1, characterized in that: The folding post (13) has a second clearance notch (13b) on its side wall away from the positioning post (12).

4. The bending device for the irregularly shaped mini-fit pin according to claim 1, characterized in that: A pressure block (14) is fixedly provided on the outer ring (10), and the pressure block (14) extends above the turntable (11) to form an axial limit on the turntable (11).

5. The bending device for the irregularly shaped mini-fit pin according to claim 1 or 4, characterized in that: The outer ring (10) has a through notch (15) on its side wall, and a drive rod (16) is fixedly installed on the side wall of the turntable (11). The drive rod (16) extends out of the outer ring (10) through the notch (15) and is hinged to the piston rod of a telescopic cylinder (17) to drive the turntable to rotate.

6. The bending device for the irregularly shaped mini-fit pin according to claim 5, characterized in that: The substrate (1) is provided with a first limiting seat (18) and a second limiting seat (19), located on both sides of the drive rod (16).

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