A wire harness terminal riveting device

Abstract

This application relates to a wire harness terminal riveting device, including a crimping device and a base. The base has two spaced-apart limiting blocks. The upper surface of the base has a groove for the limiting blocks to slide in. A first elastic element is disposed within the groove, with one end connected to the bottom surface of the groove and the other end connected to the limiting block. When the first elastic element is in its natural state, the limiting block is partially located above the upper surface of the base, forming a receiving space between the two limiting blocks to accommodate the wire harness terminal. When the first elastic element is compressed, the limiting block moves towards the bottom surface of the groove. This application effectively maintains the wire harness terminal in a properly positioned and non-tilted position before crimping, thereby improving the pass rate of the crimped wire harness terminal.

Description

Technical Field

[0001] This application relates to the field of terminal crimping equipment technology, and in particular to wire harness terminal riveting devices. Background Technology

[0002] A wire harness terminal riveting device is a device that uses mechanical force, pneumatic pressure, or hydraulic pressure to rivet wires and terminals together. Its main function is to achieve a secure connection between the wire and the terminal, ensuring circuit stability and transmission efficiency. The working principle of the wire harness terminal riveting device is primarily based on the physical principles of pressure and deformation. By applying high pressure and intense heat (sometimes only high pressure is needed), the wire and terminal undergo plastic deformation at the interface, thus tightly connecting them. This connection method has high strength and stability and can withstand large loads.

[0003] There are various types of wire harness terminal riveting devices, including manual riveting devices, semi-automatic riveting devices, and fully automatic riveting devices.

[0004] In the prior art, before riveting, wire harness terminals are generally placed on a workbench and then pressed by a hydraulic cylinder to complete the riveting work. However, when the wire harness terminals are placed on the workbench, their position or orientation may be offset, which may affect the subsequent riveting effect. Summary of the Invention

[0005] In order to keep the wire harness terminals in a neat position before pressing, this application provides a wire harness terminal riveting device.

[0006] The wire harness terminal riveting device provided in this application adopts the following technical solution:

[0007] A wire harness terminal riveting device includes a crimping device and a base. The base has two spaced-apart limiting blocks. The upper surface of the base has a groove for the limiting blocks to slide. A first elastic element is provided in the groove. One end of the first elastic element is connected to the bottom surface of the groove, and the other end is connected to the limiting block. When the first elastic element is in its natural state, the limiting block is partially located above the upper surface of the base, and a receiving space for accommodating the wire harness terminal is formed between the two limiting blocks. When the first elastic element is compressed, the limiting block moves toward the bottom surface of the groove.

[0008] Preferably, the base is provided with a sensing device on the upper surface of the accommodating space. When the sensing device comes into contact with the wire harness terminal, the sensing device outputs a sensing signal.

[0009] Preferably, the sensing device is a pressure sensor, and the sensing end of the pressure sensor is flush with the upper surface of the base.

[0010] Preferably, the base is provided with a first transmitting device, which is connected to the sensing device. When the first transmitting device receives the sensing signal, it sends a positioning signal. The crimping device is connected to a first receiving device. When the first receiving device receives the positioning signal, the crimping device starts to perform a crimping action.

[0011] Preferably, it also includes a conveying device, which includes a conveyor belt located on one side of the pressing device, and a base located above the conveyor belt, the base moving horizontally under the drive of the conveyor belt.

[0012] Preferably, the first emitting device is a ray emitter, and the first receiving device is a ray receiver. The first receiving device is located on the side of the crimping device facing the base. When the base moves to the front of the crimping device under the drive of the conveyor belt, the emitted ray hits the first receiving device directly, and at this time the crimping device starts the crimping action.

[0013] Preferably, it also includes a second emitting device and a second receiving device. The second emitting device is a ray emitter, which is located inside the base and connected to the sensing device. When the base is not in contact with the sensing device, the second emitting device emits rays. The second receiving device is a ray receiver, which is located in front of the first receiving device in the conveyor belt's conveying direction. The base passes the second receiving device and then the first receiving device under the drive of the conveyor belt. When the base moves to the front of the second receiving device, the rays from the second emitting device can be directed at the second receiving device.

[0014] Preferably, it also includes a correction device, which includes a drive mechanism and a pusher block. The correction device is signal-connected to the second receiving device. When the second receiving device receives the rays emitted by the second transmitting device, the drive mechanism drives the pusher block to move toward the base to the receiving space to push the wire harness terminals in the receiving space to the bottom.

[0015] Preferably, the push block has a second elastic element and a push head at one end facing the base, and the two ends of the second elastic element are respectively connected to the push head and the push block.

[0016] Preferably, a baffle is provided on one side of the two limiting blocks on the base.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] 1. Ensure the wire harness terminals are properly positioned and not tilted before crimping to improve the pass rate of the crimped wire harness terminals;

[0019] 2. When the wire harness terminals are not in place, the correction device can correct the position of the wire harness terminals. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the wire harness terminals after pressing according to an embodiment of this application;

[0021] Figure 2 This is a schematic diagram of the overall structure of Embodiment 1 of this application;

[0022] Figure 3 This is a schematic diagram of the base structure of Embodiment 1 of this application;

[0023] Figure 4 This is a cross-sectional view of the base of Embodiment 1 of this application;

[0024] Figure 5 This is a schematic diagram of the overall structure of Embodiment 2 of this application;

[0025] Figure 6 This is a schematic diagram of the base structure of Embodiment 2 of this application.

[0026] Explanation of reference numerals in the attached drawings: 1. Pressing device; 2. Base; 3. Limiting block; 4. Slide groove; 5. First elastic element; 6. Sensing device; 7. First transmitting device; 8. First receiving device; 9. Conveyor belt; 10. Second transmitting device; 11. Second receiving device; 13. Correction device; 131. Push block; 14. Second elastic element; 15. Push head; 16. Baffle. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0028] A wire harness terminal consists of two parts: a terminal and a wire harness. The terminal includes a base and integrally formed crimping wings on both sides of the base. Before crimping, the cross-section of the terminal is approximately U-shaped. For example... Figure 1 As shown in the diagram, the wire harness terminal omits the wire harness itself. After normal crimping, the two crimping wings bend towards each other and then contact, with the wingtips bent downwards. The wire harness terminal must be positioned correctly before crimping, forming an upright U-shape. If the terminal is tilted or tilted, it may cause problems such as excessive height difference between the two wingtips, crimping cracks, or wingtips touching the wall. Therefore, ensuring the wire harness terminal remains vertical before crimping is a crucial factor in improving its pass rate. Example 1

[0029] Embodiment 1 of this application discloses a wire harness terminal riveting device. (Refer to...) Figure 2 It includes a crimping device 1 and a base 2. In this embodiment, the base 2 is installed in a fixed position.

[0030] Reference Figure 3 and Figure 4 Two limiting blocks 3 are spaced apart on the base 2. A sliding groove 4 is formed directly below the limiting blocks 3 on the base 2. The limiting blocks 3 are cuboid in shape. The horizontal cross-section of the sliding groove 4 is the same as or slightly larger than the horizontal cross-section of the limiting blocks 3, so that the limiting blocks 3 can slide up and down within the sliding groove 4. The sliding groove 4 also limits the movement of the limiting blocks 3 in the horizontal direction. (Refer to...) Figure 3 The bottom of the slide groove 4 is provided with a first elastic element 5. In this embodiment, the first elastic element 5 is a spring. In other embodiments, the first elastic element 5 can also be other elastic structures, such as a spring sheet or a torsion spring. One end of the first elastic element 5 is fixedly connected to the bottom surface of the slide groove 4 by welding or other means, and the other end is fixedly connected to the bottom surface of the limiting block 3 by welding or other means. When the limiting block 3 is in its natural state, the lower part of the limiting block 3 is located in the slide groove 4, and the upper part of the limiting block 3 is located on the upper surface of the base 2. The natural state refers to the state in which the first elastic element 5 is only limited by the gravity of the limiting block 3. A receiving space for the wire harness terminal is formed between the upper surface of the base 2 and the two limiting blocks 3. The distance between the two limiting blocks 3 depends on the width of the wire harness terminal. The distance between the two limiting blocks 3 is slightly larger than the width on both sides of the wire harness terminal. When the wire harness terminal is placed in the receiving space formed between the two limiting blocks 3, the two sides of the wire harness terminal abut against the opposite surfaces of the two limiting blocks 3 respectively. When the limit block 3 is subjected to downward pressure, the limit block 3 moves toward the bottom surface of the slide groove 4, and the first elastic element 5 is compressed.

[0031] In this embodiment, the crimping device 1 includes a crimping head located directly above the receiving space. When the wire harness terminal is placed in the receiving space, the crimping device 1 is activated, and the crimping head moves downward. After the two sides of the lower end face of the crimping head abut against the upper end face of the limiting block 3, it continues to move downward until the crimping head presses the wire harness terminal into shape. During this process, the two limiting blocks 3 move towards the bottom surface of the slide groove 4 under the push of the crimping head. The inner sides of the two limiting blocks 3 are always in contact with the two sides of the wire harness terminal. Therefore, the wire harness terminal always remains vertically placed before being crimped and will not tilt to one side, thereby giving the wire harness terminal a high yield after crimping.

[0032] Reference Figure 4 A sensing device 6 is provided on the upper surface of the base 2, which is located within the accommodating space. When the sensing device 6 comes into contact with the wiring harness terminal, it outputs a sensing signal. Specifically, the sensing device 6 is installed in a slot on the upper surface of the base 2. In this embodiment, the sensing device 6 is a pressure sensor, with its sensing end flush with the upper surface of the base 2. In other embodiments, the sensing device 6 may also be a contact switch or other device that generates a signal through contact.

[0033] The base 2 also houses a first transmitting device 7, which is connected to the sensing device 6. The first transmitting device 7 receives the sensing signal emitted by the sensing device 6 and sends a positioning signal upon receiving the sensing signal. The crimping device 1 is connected to a first receiving device 8, which receives the positioning signal and controls the crimping device 1 to perform a crimping action upon receiving the positioning signal. The crimping action involves the crimping head moving downwards to crimp the wire harness terminal and then resetting. In this embodiment, the first transmitting device 7 is a ray emitter, signal generator, etc. When the first transmitting device 7 is a ray emitter, the first receiving device 8 is a ray receiver, and the first transmitting device 7 and the first receiving device 8 must be positioned opposite each other. The positioning signal is the ray emitted by the ray emitter. When the ray receiver receives the ray, the crimping device 1 performs the crimping action. When the first transmitting device 7 is a signal generator, the second receiving device 11 is a signal receiver, and the signal transmitter emits a wireless signal as the positioning signal. Example 2

[0034] Reference Figure 5 and Figure 6 Based on Embodiment 1, the wire harness terminal riveting device further includes a conveying device, which includes a conveyor belt 9 located on one side of the crimping device 1. A base 2 is mounted above the conveyor belt 9, and there can be multiple bases 2 on the conveyor belt 9. The conveyor belt 9 can be a horizontal or vertical ring, as long as it can achieve cyclic movement. In the figure, only one conveying surface of the conveyor belt 9 is used to represent the conveyor belt 9. The base 2 moves horizontally, at least when driven by the conveyor belt 9, as it passes the crimping device 1. In this embodiment, the first emitting device 7 is a ray emitter, and the first receiving device 8 is a ray receiver. The first receiving device 8 is located on the front of the crimping device 1. When the base 2 is directly facing the crimping device 1 driven by the conveyor belt 9, the ray emitted by the first emitting device 7 enters the first receiving device 8, the conveyor belt 9 stops, the wire harness terminal is located directly below the crimping head, and the crimping device 1 performs the crimping action. Here, the ray emitted by the first emitting device 7 is not only used to indicate that the wire harness terminal is placed in the receiving space, but also, in conjunction with the first receiving device 8, to indicate that the wire harness terminal is located directly below the crimping head.

[0035] A second emitting device 10 is also provided inside the base 2. The second emitting device 10 is connected to the sensing device 6 and is a ray emitter. When the wire harness terminal is not in contact with the sensing device 6, the second emitting device 10 emits rays. A second receiving device 11 is provided in front of the first receiving device 8 in the conveying direction of the conveyor belt 9. The second receiving device 11 is used to receive the rays emitted by the second emitting device 10. When the rays emitted by the first emitting device 7 and the second emitting device 10 are the same, in order to avoid interference, the emitting ends of the first emitting device 7 and the second emitting device 10 are located on opposite sides of the base 2, so that the rays emitted by the first emitting device 7 and the second emitting device 10 are emitted in opposite directions.

[0036] The second receiving device 11 is connected to a correction device 13, which includes a drive mechanism and a pusher block 131. The correction device 13 is signal-connected to the second receiving device 11. When the second receiving device 11 receives a ray emitted by the second transmitting device 10, it indicates that the wire harness terminal is not in place. The reason for the wire harness terminal not being in place may be that the crimping wings on both sides of the wire harness terminal are tilted outward, causing the maximum width of the wire harness terminal to be greater than the distance between the limiting blocks 3, thus causing the wire harness terminal to get stuck between the two limiting blocks 3 and unable to fall naturally to the bottom of the receiving space. It may also be that the wire harness terminal is tilted, etc. The correction device 13 is located on one side of the conveyor belt 9. When the second receiving device 11 receives a ray emitted by the second transmitting device 10, the conveyor belt is controlled to stop, and the pusher block 131 of the correction device 13 is exactly above the wire harness terminal that is not in place.

[0037] The push block 131 has a second elastic element 14 and a push head 15 at one end facing the base 2. The two ends of the second elastic element 14 are connected to the push head 15 and the push block 131, respectively. The shape of the push head 15 matches the shape of the wire harness terminal, forcing the wire harness terminal to return to its original position when it reaches contact with the sensing device 6 under the push of the push head 15. The second elastic element 14 is a spring, which plays a buffering role to prevent the push head 15 from moving too far downward and damaging the sensing device 6 and other devices.

[0038] Compared to Example 1, Example 2 adds an automatic feeding device for wire harness terminals. Driven by conveyor belt 9, it enables batch automatic pressing of wire harness terminals. Furthermore, when the wire harness terminals are not in place, their positions are corrected without manual intervention, reducing manual intervention and improving work efficiency.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A wire harness terminal riveting device, comprising a crimping device (1) and a base (2), characterized in that: The base (2) is provided with two spaced-apart limiting blocks (3). The upper surface of the base (2) is provided with a sliding groove (4) for the limiting blocks (3) to slide. The sliding groove (4) is provided with a first elastic element (5). One end of the first elastic element (5) is connected to the bottom surface of the sliding groove (4) and the other end is connected to the limiting block (3). When the first elastic element (5) is in its natural state, the limiting block (3) is partially located above the upper surface of the base (2). A receiving space for accommodating wire harness terminals is formed between the two limiting blocks (3). When the first elastic element (5) is compressed, the limiting block (3) moves toward the bottom surface of the sliding groove (4). The base (2) is provided with a sensing device (6) on the upper surface of the accommodating space. When the sensing device (6) contacts the wire harness terminal, the sensing device (6) outputs a sensing signal. The sensing device (6) is a pressure sensor, and the sensing end of the pressure sensor is flush with the upper surface of the base (2). The base (2) is provided with a first transmitting device (7), which is connected to the sensing device (6). When the first transmitting device (7) receives the sensing signal, it sends a positioning signal. The crimping device (1) is connected to a first receiving device (8). When the first receiving device (8) receives the positioning signal, the crimping device (1) starts to perform a crimping action. It also includes a conveying device, so the conveying device includes a conveyor belt (9), the conveyor belt (9) is located on one side of the pressing device (1), the base (2) is located above the conveyor belt (9), and the base (2) moves horizontally under the drive of the conveyor belt (9); The first emitting device (7) is a ray emitter, and the first receiving device (8) is a ray receiver. The first receiving device (8) is located on the side of the crimping device (1) facing the base (2). When the base (2) moves to the front of the crimping device (1) under the drive of the conveyor belt (9), the ray emitted by the first emitting device (7) hits the first receiving device (8) directly, and at this time the crimping device (1) starts the crimping action. It also includes a second emitting device (10) and a second receiving device (11). The second emitting device (10) is a ray emitter. The second emitting device (10) is located inside the base (2) and connected to the sensing device (6). When the wire harness terminal does not contact the sensing device (6), the second emitting device (10) emits rays. The second receiving device (11) is a ray receiver. The second receiving device (11) is located in front of the first receiving device (8) in the conveying direction of the conveyor belt (9). The base (2) passes through the second receiving device (11) and then the first receiving device (8) under the drive of the conveyor belt (9). When the base (2) moves to the front of the second receiving device (11), the rays of the second emitting device (10) can be directed to the second receiving device (11). It also includes a correction device (13), which includes a drive mechanism and a push block (131). The correction device (13) is signal connected to the second receiving device (11). When the second receiving device (11) receives the rays emitted by the second transmitting device (10), the drive mechanism drives the push block (131) to move toward the base (2) to the receiving space to push the wire harness terminals in the receiving space to the bottom. The push block (131) is provided with a second elastic element (14) and a push head (15) at one end facing the base (2), and the two ends of the second elastic element (14) are respectively connected to the push head (15) and the push block (131).

2. The wire harness terminal riveting device according to claim 1, characterized in that: The base (2) is provided with a baffle (16) on one side of the two limiting blocks (3).

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