A lower die limiting device and limiting method for PCBA terminal crimping

Abstract

The application relates to a lower die limiting device for PCBA terminal crimping and a limiting method, the limiting device comprises a transverse limiting assembly and a longitudinal limiting assembly, the transverse limiting assembly comprises a first limiting rod and two second limiting rods, the two second limiting rods are perpendicular to the first limiting rod and one end of each second limiting rod is connected with the first limiting rod; the longitudinal limiting assembly comprises limiting blocks rotatably installed on the second limiting rods, the limiting blocks are at least two and are vertically installed on the two second limiting rods respectively; and the lower die is clamped between the two second limiting rods and the limiting blocks. Compared with the prior art, the limiting blocks can rotate around the second limiting rods and can also move along the second limiting rods; through flexible adjustment of the distance between the two movable second limiting rods and the multiple limiting blocks, the limiting of lower dies for PCBA terminal crimping with different sizes can be realized; and the application is suitable for crimping of long strip motherboards and has other advantages.

Description

Technical Field

[0001] This invention relates to PCBA manufacturing tools, and more particularly to a lower mold limiting device and limiting method for PCBA terminal crimping. Background Technology

[0002] Currently, most PCBA pressing processes utilize automated pressing machines. These machines apply pressure to the pressing head to press the connector terminals onto the PCBA. The pressing head of these machines typically has a rectangular flat surface that is larger than the die on the pressing fixture. During the pressing process, simply push the pressing die containing the PCBA directly under the pressing head, operate the pressing machine, and the pressing process is complete.

[0003] For a PCBA that needs to be crimped with multiple terminals, or for the same type of terminal to be crimped onto different PCBAs, each crimping operation requires manually pushing the fixture under the crimping head. It cannot be guaranteed that the terminal being crimped will be exactly under the crimping head each time, making it difficult to control the crimping quality. Since the crimping process is a special process, any abnormal crimping will lead to the scrapping of the entire printed circuit board, seriously affecting production costs.

[0004] In summary, the technical problem that needs to be solved is how to design a device that can accurately press the welding position. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art, which makes it difficult to accurately control the crimping position, and to provide a lower mold limiting device and limiting method for PCBA terminal crimping.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] According to one aspect of the present invention, a lower die limiting device for PCBA terminal crimping is provided, comprising a lateral limiting assembly and a longitudinal limiting assembly. The lateral limiting assembly includes a first limiting rod and two second limiting rods, the two second limiting rods being perpendicular to the first limiting rod and having one end connected to the first limiting rod. The longitudinal limiting assembly includes a limiting block rotatably mounted on the second limiting rods, at least two of which are respectively vertically mounted on the two second limiting rods. The lower die is engaged between the two second limiting rods and the limiting block.

[0008] As a preferred technical solution, one end of the limiting block is provided with a mounting hole, and the limiting block passes through the mounting hole onto the second limiting rod, forming a sliding pair with the second limiting rod.

[0009] As a preferred technical solution, the second limiting component further includes at least four positioning rings, which are sleeved on the second limiting rod, with two positioning rings located on both sides of a limiting block.

[0010] As a preferred technical solution, the positioning ring is fixed to the second limiting rod by screws.

[0011] As a preferred technical solution, one end of the limiting block is connected to the second limiting rod, including a first working position and a second working position; when the limiting block is in the first working position, the end not connected to the second limiting rod is located between the two second limiting rods; when the limiting block is in the first working position, the end not connected to the second limiting rod is located outside the two second limiting rods.

[0012] As a preferred technical solution, the first limiting rod is provided with a sliding groove, and one end of the second limiting rod is provided with a mounting hole. The stud passes through the mounting hole and the sliding groove to fix the second limiting rod on the first limiting rod.

[0013] As a preferred technical solution, the second limiting rod includes a movable bar, a fixed plate, and a movable rod. One end of the movable bar is connected to the first limiting rod, the fixed plate is installed at both ends of the movable bar, and both ends of the movable rod are connected to the fixed plate, with the movable rod parallel to the movable bar.

[0014] As a preferred technical solution, the limiting block is installed on the movable rod.

[0015] As a preferred technical solution, one end of the movable strip is connected to the first limiting rod via a stud.

[0016] According to another aspect of the present invention, a limiting method using a lower die limiting device for PCBA terminal crimping is provided, specifically including the following steps:

[0017] Step S1: Adjust the distance between the two second limit rods to be equal to the width of the lower mold;

[0018] Step S2: The limiting block rotates to the outside of the two second limiting rods, and the lower mold is placed between the two second limiting rods;

[0019] Step S3: The limiting block rotates to the inside of the two second limiting rods, and the lower mold is locked between the two second limiting rods and the limiting block;

[0020] Step S4: The PCBA is placed on the lower mold, and the lower mold is pressed against the limiting block and the second limiting rod on one side of the PCBA to press the terminal on the opposite side of the PCBA; similarly, the terminal on the other side of the PCBA is pressed.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1) The limiting block of the present invention can rotate around the second limiting rod and can also move along the second limiting rod. By flexibly adjusting the distance between the two movable second limiting rods and the multiple limiting blocks, the limiting of the lower mold for PCBA terminal crimping of different sizes can be realized; it is suitable for crimping of long strip motherboards.

[0023] 2) The present invention fixes the limiting block by positioning ring, which can restrict the limiting block to any position of the second limiting rod, and realize convenient crimping of multiple terminals in the longitudinal direction; the switching of the two working positions of the limiting block can realize convenient installation of the lower mold and improve efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a lower mold limiting device for PCBA terminal crimping according to the present invention;

[0025] Figure 2 This is a partial schematic diagram showing the connection between the limiting block and the positioning ring and the second limiting rod of the present invention;

[0026] Figure 3 This is a schematic diagram of the positioning ring structure of the present invention;

[0027] Figure 4 This is a flowchart of a method for limiting the lower mold for PCBA terminal crimping according to the present invention;

[0028] The numbers in the diagram are as follows:

[0029] 1. Lateral limiting assembly; 11. First limiting rod; 12. Second limiting rod; 121. Movable bar; 122. Fixed plate; 123. Movable rod; 14. Slide groove; 13. Stud; 2. Longitudinal limiting assembly; 21. Limiting block; 22. Positioning ring; 23. Screw. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0031] Example 1

[0032] like Figure 1 As shown, the present invention provides a lower mold limiting device for PCBA terminal crimping, including a lateral limiting component 1 and a longitudinal limiting component 2.

[0033] The lateral limiting assembly 1 includes a first limiting rod 11 and two second limiting rods 12. The two second limiting rods 12 are perpendicular to the first limiting rod 11, and one end of each second limiting rod 12 is connected to the first limiting rod 11. The first limiting rod 11 is provided with a sliding groove 14. Each second limiting rod 12 includes a movable bar 121, a fixed plate 122, and a movable rod 123. One end of the movable bar 121 is provided with a mounting hole, and a stud 13 passes through the mounting hole and the sliding groove 14. The movable bar 121 can move within the sliding groove 14 to adjust the distance between the two movable bars 121, thereby achieving lateral limiting of the lower mold. There are two fixed plates 122, which are installed at both ends of the movable plate and are perpendicular to the movable plate. Both ends of the movable rod 123 are connected to the fixed plate 122, and the movable rod 123 is parallel to the movable bar 121. The fixed plate 122 supports the movable rod 123 above the movable bar 121.

[0034] like Figure 2 and Figure 3 As shown, the longitudinal limiting assembly 2 includes multiple limiting blocks 21 and positioning rings 22. One end of each limiting block 21 has a mounting hole, through which it passes onto the movable rod 123. The limiting block 21 can move or rotate along the second limiting rod 12. The positioning rings 22 pass through the movable rod 123 and are installed on both sides of the limiting block 21. Once the position of the limiting block 21 is determined, the positioning rings 22 on both sides are fixed to the movable rod 123 by screws 23, thus fixing the position of the limiting block 21. Multiple sets of limiting blocks 21 and positioning rings 22 are fitted along the movable rod 123, enabling convenient crimping of multiple terminals. The limiting block 21 includes a first working position and a second working position. When the limiting block 21 is in the first working position, it is in a limiting state, and the end not connected to the second limiting rod 12 is located between the two second limiting rods 12, which blocks and limits the lower mold, thereby achieving longitudinal limiting of the lower mold. When the limiting block 21 is in the second working position, it is in an open state, and the end not connected to the second limiting rod 12 is located outside the two second limiting rods 12, which facilitates the installation and removal of the lower mold.

[0035] Example 2

[0036] like Figure 4 As shown, this invention provides a method for limiting the lower mold for PCBA terminal crimping, employing a device for limiting the lower mold for PCBA terminal crimping. The specific process is as follows:

[0037] Two movable bars 121 are mounted to the first limiting rod 11 via studs 13. The spacing between the two movable bars 121 is controlled according to the width of the lower mold and the center distance of multiple terminals to be crimped laterally. The second limiting rod 12 has multiple limiting blocks 21 and positioning rings 22. When the limiting block 21 rotates to the second working position, it is placed into the lower mold. When the limiting block 21 rotates to the first working position, the two positioning rings 22 are fixed to the movable rod 123 by screws 23, thereby restricting the longitudinal movement of the limiting block 21 and thus limiting the lower mold. The PCBA is placed on the lower mold, with the lower mold flush against the left limiting block 21 and the movable rod 123, crimping the terminals on the right side of the PCBA; the lower mold is also flush against the right limiting block 21 and the movable rod 123, crimping the terminals on the left side of the PCBA.

[0038] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A lower die limiting device for PCBA terminal crimping, characterized in that, The device includes a lateral limiting component (1) and a longitudinal limiting component (2). The lateral limiting component (1) includes a first limiting rod (11) and two second limiting rods (12). The two second limiting rods (12) are perpendicular to the first limiting rod (11) and one end is connected to the first limiting rod (11). The longitudinal limiting component (2) includes a limiting block (21) rotatably mounted on the second limiting rod (12). There are at least two limiting blocks (21), which are respectively vertically mounted on the two second limiting rods (12). The lower mold is clamped between the two second limiting rods (12) and the limiting block (21).

2. The lower die limiting device for PCBA terminal crimping according to claim 1, characterized in that, The limiting block (21) has a mounting hole at one end. The limiting block (21) passes through the mounting hole onto the second limiting rod (12) and forms a sliding pair with the second limiting rod (12).

3. The lower die limiting device for PCBA terminal crimping according to claim 1, characterized in that, The second limiting component further includes at least four positioning rings (22), which are sleeved on the second limiting rod (12), with two positioning rings (22) located on both sides of a limiting block (21).

4. The lower die limiting device for PCBA terminal crimping according to claim 3, characterized in that, The positioning ring (22) is fixed to the second limiting rod (12) by screws (23).

5. The lower die limiting device for PCBA terminal crimping according to claim 1, characterized in that, The limiting block (21) is connected to the second limiting rod (12) at one end, including a first working position and a second working position; when the limiting block (21) is in the first working position, the end not connected to the second limiting rod (12) is located between the two second limiting rods (12); when the limiting block (21) is in the first working position, the end not connected to the second limiting rod (12) is located outside the two second limiting rods (12).

6. The lower die limiting device for PCBA terminal crimping according to claim 1, characterized in that, The first limiting rod (11) is provided with a sliding groove (14), and the second limiting rod (12) is provided with a mounting hole at one end. The stud (13) passes through the mounting hole and the sliding groove (14) to fix the second limiting rod (12) on the first limiting rod (11).

7. The lower die limiting device for PCBA terminal crimping according to claim 1, characterized in that, The second limiting rod (12) includes a movable bar (121), a fixed plate (122), and a movable rod (123). One end of the movable bar (121) is connected to the first limiting rod (11). The fixed plate (122) is installed at both ends of the movable bar (121). Both ends of the movable rod (123) are connected to the fixed plate (122), and the movable rod (123) is parallel to the movable bar (121).

8. A lower die limiting device for PCBA terminal crimping according to claim 7, characterized in that, The limiting block (21) is installed on the movable rod (123).

9. A lower die limiting device for PCBA terminal crimping according to claim 7, characterized in that, One end of the movable bar (121) is connected to the first limiting rod (11) via a stud (13).

10. A limiting method using the lower die limiting device for PCBA terminal crimping as described in claim 1, characterized in that, Specifically, the following steps are included: Step S1: Adjust the distance between the two second limit rods (12) to be equal to the width of the lower mold; Step S2, the limiting block (21) is rotated to the outside of the two second limiting rods (12), and the lower mold is placed between the two second limiting rods (12); In step S3, the limiting block (21) rotates to the inside of the two second limiting rods (12), and the lower mold is locked between the two second limiting rods (12) and the limiting block (21); In step S4, the PCBA is placed on the lower mold, and the lower mold is pressed against the limiting block (21) and the second limiting rod (12) on one side of the PCBA to press the terminal on the opposite side of the PCBA; similarly, the terminal on the other side of the PCBA is pressed.

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