Connector multi-lead lossless synchronous cutting device and use method

Abstract

The application discloses a kind of connector multi-lead lossless synchronous cutting device and method, belong to component lead cutting field, reliable clamping to connector lead is realized by designing clamping base, clamping main push block, disc washer etc., locking after clamping to lead is realized by cam locking mechanism to push clamping main push block, guarantee that the root of cutting process lead and connector connecting part are not stressed.Design special cutting knife, reciprocating motion is completed along guide rail by pneumatic cylinder linear motion mechanism control cutting knife, realize the synchronous cutting of all connector leads, greatly improve the efficiency of connector lead cutting, guarantee that all lead cutting height is consistent, simultaneously, the application realizes cutting before machine, avoids the risk of traditional post-machine cutting introduction redundancy and damage printed board.

Description

Technical Field

[0001] This invention belongs to the field of component lead cutting, specifically relating to a non-destructive synchronous cutting device for multiple connector leads and its usage method. Background Technology

[0002] Connectors are widely used in electronic products. Due to the long length of connector leads, the length of the leads extending beyond the printed circuit board after installation is excessive, failing to meet the requirement of aerospace standard QJ165B-2014 "General Technical Requirements for Installation of Aerospace Electronic and Electrical Products" that "the length of the lead extending beyond the board surface after component installation should be 1.5mm ± 0.8mm". Therefore, connector leads need to be trimmed after installation to meet the standard requirements. Traditionally, connector lead trimming involves using kerosene-retaining pliers to cut each lead individually after connector installation and fixation. However, due to the large number of connector leads (commonly 65, 96, and 156 wires), this traditional manual trimming method is inefficient, results in inconsistent cutting heights, and poses a risk of introducing excess material and damaging the printed circuit board due to the cutting process on the PCB assembly. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, the present invention aims to provide a non-destructive synchronous cutting device and method for multi-lead connectors, thereby solving the problems of low efficiency, inconsistent cutting height, and the risk of introducing excess material and damaging the printed circuit board due to cutting on the printed circuit board assembly.

[0004] To achieve the above objectives, the present invention employs the following technical solution:

[0005] A connector multi-lead non-destructive synchronous cutting device includes: a clamping mechanism, a cutting motion mechanism, a housing, a control panel, a PLC controller, a lead wire collection box, and a solenoid valve. The cutting motion mechanism is located at the top inside the housing, and the clamping mechanism is located on the top outside the housing and clamps the connector. The control panel is located on the housing, and the PLC controller and solenoid valve are both installed inside the housing. The control panel, PLC controller, cutting motion mechanism, and solenoid valve are electrically interconnected. The lead wire collection box is located inside the housing and installed directly below the clamping mechanism.

[0006] Preferably, the clamping mechanism includes: a clamping base, a clamping main push block, a locking handle, a locking cam, a locking screw, a clamping intermediate plate, a disc-shaped washer, a guide pin, and a rotation limit pin; the clamping base is fixed on the top of the outer side of the box body on the cutting motion mechanism, the clamping main push block and the clamping intermediate plate are respectively installed on the clamping base through guide pins symmetrically arranged on both sides, and disc-shaped washers are installed between the clamping main push block and the clamping intermediate plate, and between the clamping intermediate plate and the clamping base at the connection parts of the guide pins on both sides; the locking cam is installed on the clamping base by a locking screw, and the locking handle is installed on the locking cam.

[0007] Preferably, the clamping base is provided with a second limiting boss at the clamping part, and the protrusion size of the second limiting boss is determined according to the diameter of the connecting lead wire; the clamping base is provided with a rotation limiting groove at the locking cam mounting part, and the rotation limiting pin is engaged in the rotation limiting groove of the clamping base.

[0008] Preferably, the clamping main push block is provided with a first limiting boss at the clamping part, and the protrusion size of the first limiting boss is determined according to the diameter of the connecting lead.

[0009] Preferably, the locking handle is mounted on the locking cam via a threaded connection.

[0010] Preferably, the cutting motion mechanism includes a base plate, a first cutting guide rail, a second cutting guide rail, a cutting blade, a cutting push block, a cylinder, and a cylinder mounting base; the base plate is fixed to the top of the housing, the cylinder mounting base is fixed to the base plate, the cylinder is fixed to the cylinder mounting base, and the cutting push block is connected to the cylinder shaft on the cylinder and the cutting blade respectively; the first cutting guide rail and the second cutting guide rail are arranged parallel to each other on the base plate, forming the cutting blade's motion guide rail together with the base plate.

[0011] Preferably, the cutting blade is made of cemented carbide steel, and the cutting surface of the blade is set at a specific angle.

[0012] Preferably, the cylinder mounting base is fastened to the base plate by bolts; the cylinder is fastened to the cylinder mounting base by bolts; the cutter pusher is connected to the cylinder shaft and the cutter by bolts respectively; the first cutter guide rail and the second cutter guide rail are fastened to the base plate by bolts.

[0013] This invention also discloses a method for using a connector multi-lead non-destructive synchronous cutting device, comprising:

[0014] S1: Connector insertion clamping mechanism;

[0015] S2: The PLC controller controls the lead wires of the cutting connector for the cutting motion mechanism;

[0016] S3: Lead collection box collects excess material from cutting leads.

[0017] Preferably, the clamping mechanism includes: a clamping base, a clamping main push block, a locking handle, a locking cam, a locking screw, a clamping intermediate plate, a disc-shaped washer, a guide pin, and a rotation limit pin; the cutting motion mechanism includes a base plate, a first cutting guide rail, a second cutting guide rail, a cutting blade, a cutting push block, a cylinder, and a cylinder fixing seat.

[0018] In S1, the connector is installed into the clamping mechanism. The connector leads are respectively inserted between the clamping main push block and the clamping intermediate plate, and between the clamping intermediate plate and the clamping base. The rotating locking cam pushes the clamping main push block forward to achieve reliable clamping of the connector leads.

[0019] In S2, the PLC controller controls the cutting blade to reciprocate linearly along the guide rail via a cylinder, thereby achieving synchronous cutting of all leads of the connector.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1) This invention provides a non-destructive synchronous cutting device for multiple connector leads. By designing a lead clamping mechanism, reliable clamping of the connector leads is achieved, avoiding stress on the lead root during the cutting process. By designing a cutting motion mechanism and a dedicated cutting blade, non-destructive synchronous cutting of multiple connector leads is achieved, significantly improving the efficiency of lead cutting. Furthermore, all leads are cut to the same height, ensuring cutting quality.

[0022] 2) This invention provides a solution for non-destructive cutting of multi-leads of through-hole components. By designing corresponding clamping mechanisms according to the structure of the components, this invention can be applied to non-destructive synchronous cutting of multi-leads of components such as connectors of different sizes, DIP devices, and PGA devices, which greatly improves the efficiency of lead cutting and ensures the cutting quality.

[0023] 3) This invention provides a connector multi-lead non-destructive synchronous cutting device, which realizes the cutting of component leads before they are put into the machine, avoiding the risk of introducing excess material and damaging the printed circuit board. Attached Figure Description

[0024] Figure 1 This is a three-dimensional isometric view of the cutting device of the present invention;

[0025] Figure 2 This is a three-dimensional isometric view of the cutting device (box cut) of the present invention;

[0026] Figure 3 This is a three-dimensional isometric view of the clamping mechanism of the present invention;

[0027] Figure 4 This is a top view of the clamping mechanism of the present invention;

[0028] Figure 5 This is a cross-sectional view of the clamping mechanism of the present invention;

[0029] Figure 6 This is a top view of the clamping base of the present invention;

[0030] Figure 7 This is a three-dimensional isometric view of the locking cam of the present invention.

[0031] Figure 8 This is a three-dimensional isometric view of the cutting motion mechanism of the present invention.

[0032] Wherein: 1-Clamping mechanism; 1-1-Clamping base; 1-1-1-Second limiting boss; 1-1-2-Rotation limiting groove; 1-2-Clamping main push block; 1-2-1-First limiting boss; 1-3-Locking handle; 1-4-Locking cam; 1-5-Plug screw; 1-6-Clamping intermediate plate; 1-7-Disc-shaped gasket; 1-8-Guide pin; 1-9-Rotation limiting pin; 2-Cutting motion mechanism; 2-1-Base plate; 2-2-First cutter guide rail; 2-3-Second cutter guide rail; 2-4-Cutting blade; 2-5-Cutting push block; 2-6-Cylinder; 2-7-Cylinder fixing seat; 3-Box; 4-Control panel; 5-PLC controller; 6-Wire collection box; 7-Solenoid valve; 8-Connector. Detailed Implementation

[0033] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. 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.

[0034] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0035] The present invention will now be described in further detail with reference to the accompanying drawings:

[0036] This invention designs a non-destructive synchronous cutting device for multiple connector leads. It achieves reliable clamping of the connector leads through the design of a clamping base 1-1, a clamping main push block 1-2, and disc-shaped pads 1-7. A cam locking mechanism pushes the clamping main push block 1-2 to lock the leads after clamping, ensuring that the root of the lead is not stressed during the cutting process. A dedicated cutting blade is designed, and a cylinder linear motion mechanism controls the cutting blade 2-4 to reciprocate along the guide rail, achieving synchronous cutting of all connector leads. This significantly improves the efficiency of connector lead cutting and ensures that all leads are cut to a consistent height. Furthermore, this invention enables pre-processing cutting, avoiding the risks of introducing excess material and damaging the printed circuit board associated with traditional post-processing cutting.

[0037] See Figures 1 to 8 The technical solution adopted in this invention includes a clamping mechanism 1, a cutting motion mechanism 2, a housing 3, a control panel 4, a PLC controller 5, and a lead wire collection box 6.

[0038] Connector 8 is mounted on clamping mechanism 1, and the cam locking mechanism of clamping mechanism 1 ensures reliable clamping and locking of connector 8 leads. Clamping mechanism 1 is mounted on cutting motion mechanism 2, and cutting motion mechanism 2 controls cutting blade 2-4 to reciprocate along guide rail through cylinder linear motion mechanism, achieving synchronous cutting of all leads of connector 8. Control panel 4 and PLC controller 5 are installed in housing 3 and are electrically interconnected with cylinder 2-6 and solenoid valve 7 of cutting motion mechanism 2 to achieve electrical control of cutting motion mechanism 2. Lead collection box 6 is inserted into housing 3 in the form of a drawer and installed directly below clamping mechanism 1 to collect excess material from cut leads.

[0039] The clamping mechanism 1 is composed of a clamping base 1-1, a clamping main push block 1-2, a locking handle 1-3, a locking cam 1-4, a plug screw 1-5, a clamping intermediate plate 1-6, a disc-shaped gasket 1-7, a guide pin 1-8, and a rotation limit pin 1-9.

[0040] The clamping main push block 1-2 and the clamping intermediate plate 1-6 are respectively installed on the clamping base 1-1 through the guide pins 1-8 arranged symmetrically on both sides; at the connection parts of the guide pins 1-8 on both sides, disc-shaped gaskets 1-7 are installed between the clamping main push block 1-2 and the clamping intermediate plate 1-6, and between the clamping intermediate plate 1-6 and the clamping base 1-1; the function of the disc-shaped gaskets 1-7 is to open up the gaps between the clamping main push block 1-2 and the clamping intermediate plate 1-6, and between the clamping intermediate plate 1-6 and the clamping base 1-1 before the connector 8 is installed, so as to ensure that the connector 8 can be smoothly installed into the clamping mechanism 1; the locking cam 1-4 is installed on the clamping base 1-1 through the plug screw 1-5, and the locking handle 1-3 is installed on the locking cam 1-4 through the threaded connection. In application, firstly, the connector 8 is installed into the clamping mechanism 1. The connector 8 leads are inserted between the clamping main push block 1-2 and the clamping intermediate plate 1-6, and between the clamping intermediate plate 1-6 and the clamping base 1-1. Rotating the locking cam 1-4 pushes the clamping main push block 1-2 forward to achieve reliable clamping of the connector 8 leads, ensuring that the connection between the connector 8 leads and the body is not stressed during the cutting process, thus achieving non-destructive cutting of the leads.

[0041] The clamping main push block 1-2 is provided with a first limiting boss 1-2-1 at the clamping part. The protrusion size of the first limiting boss 1-2-1 is determined according to the diameter of the connecting lead wire to ensure that the connector 8 lead wire is not damaged after clamping and locking.

[0042] The clamping base 1-1 is provided with a second limiting boss 1-1-1 at the clamping part. The protrusion size of the second limiting boss 1-1-1 is determined according to the diameter of the connecting lead wire to ensure that the connector 8 lead wire is not damaged after clamping and locking.

[0043] The clamping base 1-1 is provided with a rotation limiting groove 1-1-2 at the mounting position of the locking cam 1-4. The bottom of the locking cam 1-4 is fitted with a rotation limiting pin 1-9. After the locking cam 1-4 is installed, the rotation limiting pin 1-9 is engaged in the rotation limiting groove 1-1-2 of the clamping base 1-1, thereby achieving rotational limiting of the locking cam 1-4.

[0044] The cutting motion mechanism 2 comprises a base plate 2-1, a first cutting guide rail 2-2, a second cutting guide rail 2-3, a cutting blade 2-4, a cutting push block 2-5, a cylinder 2-6, and a cylinder mounting base 2-7. The cylinder mounting base 2-7 is bolted to the base plate 2-1; the cylinder 2-6 is bolted to the cylinder mounting base 2-7; the cutting push block 2-5 is bolted to the cylinder shaft and the cutting blade respectively; the first cutting guide rail 2-2 and the second cutting guide rail 2-3 are bolted to the base plate 2-1, together forming the motion guide rail for the cutting blade 2-4. In application, the clamping mechanism 1 is bolted to the base plate 2-1 of the cutting motion mechanism 2. The connector 8 is inserted into the clamping mechanism 1. The rotating locking cam 1-4 pushes the clamping main push block 1-2 forward to achieve reliable clamping of the connector 8 leads. The cylinder 2-6 controls the cutting blade 2-4 to complete the reciprocating linear motion along the guide rail to achieve synchronous cutting of all leads of the connector 8.

[0045] The cutting blades 2-4 are made of cemented carbide steel, and the cutting surface of the blade is set at a certain angle, which realizes the individual cutting of the lead wires during the cutting process, ensuring the stability of the lead wire cutting process, while reducing the wear of the cutting blades and improving the service life of the cutting blades.

[0046] Example

[0047] Taking the lead wire cutting of a 65-pin connector 8 used in a product undertaken by our unit as an example, the original length of the connector 8 lead wire is 15mm, but the actual length required for soldering is 4mm. Therefore, the connector 8 lead wire needs to be cut to meet the standard requirements. In application, firstly, a corresponding clamping mechanism 1 is designed according to the size of the 65-pin connector 8, including a clamping base 1-1 and a second limiting boss 1-1-1, a clamping main push block 1-2 and a first limiting boss 1-2-1, and a clamping intermediate plate 1-3. The connector 8 is then installed into the clamping mechanism 1. Rotating the locking cam 1-4 of the clamping mechanism 1 pushes the clamping main push block 1-2 forward, reliably clamping all the leads of the connector 8 and ensuring that the connection between the connector 8 lead wire and the body is not stressed during the cutting process. Further, the cutting motion mechanism 2 is activated through the control panel 4. The cutting motion mechanism 2, through the cylinder 2-6, drives the cutting blade 2-4 to complete a reciprocating linear motion along the guide rail, achieving non-destructive synchronous cutting of all the leads of the connector 8. The non-destructive synchronous cutting device for multi-lead connectors can achieve synchronous cutting of multi-lead connectors, increasing cutting efficiency by more than 30 times, and ensuring that all leads are cut at the same height, thus guaranteeing cutting consistency and quality.

[0048] Verification has shown that the connector multi-lead non-destructive synchronous cutting device designed using this invention can achieve non-destructive synchronous cutting of multiple connector leads before machine installation, solving the bottleneck problem of traditional manual cutting one lead at a time after machine installation. This significantly improves the quality and efficiency of component lead cutting and avoids the risk of introducing excess material and damaging the printed circuit board. By designing corresponding clamping mechanisms according to the component structure, this invention can be applied to the non-destructive synchronous cutting of multi-lead leads of through-hole components such as connectors of different sizes, DIP devices, and PGA devices, greatly improving the production efficiency and quality of through-hole component lead cutting.

[0049] The above content is only for illustrating the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made to the technical solution based on the technical concept proposed in this invention shall fall within the scope of protection of the claims of this invention.

Claims

1. A non-destructive synchronous cutting device for multi-lead connectors, characterized in that, include: The clamping mechanism (1), the cutting motion mechanism (2), the housing (3), the control panel (4), the PLC controller (5), the lead wire collection box (6), and the solenoid valve (7) are arranged inside the top of the housing (3). The clamping mechanism (1) is located on the top of the outer side of the housing (3) on the cutting motion mechanism (2) for clamping the connector (8). The control panel (4) is located on the housing (3). The PLC controller (5) and the solenoid valve (7) are both installed inside the housing (3). The control panel (4), the PLC controller (5), the cutting motion mechanism (2), and the solenoid valve (7) are electrically interconnected. The lead wire collection box (6) is located inside the housing (3) and installed directly below the clamping mechanism (1). The clamping mechanism (1) includes: a clamping base (1-1), a clamping main push block (1-2), a locking handle (1-3), a locking cam (1-4), a locking screw (1-5), a clamping intermediate plate (1-6), a disc-shaped washer (1-7), a guide pin (1-8), and a rotation limit pin (1-9); the clamping base (1-1) is fixed on the cutting motion mechanism (2) and located on the top of the outer side of the box (3); the clamping main push block (1-2) and the clamping intermediate plate (1-6) are respectively inserted through... Guide pins (1-8) symmetrically arranged on both sides are installed on the clamping base (1-1). Disc-shaped gaskets (1-7) are installed between the clamping main push block (1-2) and the clamping intermediate plate (1-6), and between the clamping intermediate plate (1-6) and the clamping base (1-1) at the connection of the guide pins (1-8) on both sides. The locking cam (1-4) is installed on the clamping base (1-1) by a plug screw (1-5), and the locking handle (1-3) is installed on the locking cam (1-4). The clamping main push block (1-2) is provided with a first limiting boss (1-2-1) at the clamping part, and the protrusion size of the first limiting boss (1-2-1) is determined according to the diameter of the connecting lead wire; the clamping base (1-1) is provided with a second limiting boss (1-1-1) at the clamping part, and the protrusion size of the second limiting boss (1-1-1) is determined according to the diameter of the connecting lead wire; The cutting motion mechanism (2) includes a base plate (2-1), a first cutting guide rail (2-2), a second cutting guide rail (2-3), a cutting blade (2-4), a cutting push block (2-5), a cylinder (2-6), and a cylinder mounting base (2-7). The base plate (2-1) is fixed to the top of the inner side of the housing (3) and has a groove for the extension of multiple leads of the connector. The cylinder mounting base (2-7) is fixed on the base plate (2-1), the cylinder (2-6) is fixed on the cylinder mounting base (2-7), and the cutting push block (2-5) is connected to the cylinder shaft on the cylinder (2-6) and the cutting blade (2-4) respectively. The first cutting guide rail (2-2) and the second cutting guide rail (2-3) are arranged parallel to each other on the base plate (2-1) and together with the base plate (2-1) form the motion guide rail of the cutting blade (2-4).

2. The connector multi-lead non-destructive synchronous cutting device according to claim 1, characterized in that, The clamping base (1-1) has a rotation limiting groove (1-1-2) at the mounting position of the locking cam (1-4), and the rotation limiting pin (1-9) is engaged in the rotation limiting groove (1-1-2) of the clamping base (1-1).

3. The connector multi-lead non-destructive synchronous cutting device according to claim 1, characterized in that, The locking handle (1-3) is installed on the locking cam (1-4) by a threaded connection.

4. The connector multi-lead non-destructive synchronous cutting device according to claim 1, characterized in that, The cutting blade (2-4) is made of cemented carbide steel, and the cutting surface of the blade is set at a specific angle.

5. The connector multi-lead non-destructive synchronous cutting device according to claim 1, characterized in that, The cylinder mounting base (2-7) is fastened to the base plate (2-1) by bolts; the cylinder (2-6) is fastened to the cylinder mounting base (2-7) by bolts; the cutter pusher (2-5) is connected to the cylinder shaft and the cutter (2-4) by bolts respectively; the first cutter guide rail (2-2) and the second cutter guide rail (2-3) are fastened to the base plate (2-1) by bolts.

6. The method of using the connector multi-lead non-destructive synchronous cutting device according to any one of claims 1 to 5, characterized in that, include: S1: Connector (8) is installed into clamping mechanism (1); connector (8) is installed into clamping mechanism (1), connector (8) leads are inserted between clamping main push block (1-2) and clamping intermediate plate (1-6), clamping intermediate plate (1-6) and clamping base (1-1), respectively, and rotating locking cam (1-4) pushes clamping main push block (1-2) forward to achieve reliable clamping of connector (8) leads; S2: The PLC controller (5) controls the cutting blade (2-4) to complete the reciprocating linear motion along the guide rail through the cylinder (2-6), so as to realize the synchronous cutting of all leads of the connector (8); S3: Lead collection box (6) collects excess material from the cut leads.

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