Guide clamping hand and terminal crimping device

Abstract

The utility model discloses a guiding clamp and a terminal crimping device, and solves the problems that a lead extending into a terminal crimping part is not easy to align, and a guider affects the operation of a stamping head. The utility model discloses a terminal crimping device. A guide clamp is arranged at an opening of a terminal clamp. The guide clamp is closed to form a pipeline. The terminal clamping hand and the guide clamping hand are arranged on the bearing part, and the first driving device is used for driving the bearing part to reciprocate between a crimping position and a first position along the axial direction of the pipeline. And the second driving device is used for driving the guide clamping hand to reciprocate between a crimping position close to the terminal clamping hand and a third position far away from the terminal clamping hand. According to the invention, positioning is provided through the guide clamp when the wire core extends into the terminal, and a position can be reserved through movement after the wire core enters the terminal, so that the punching head tightly presses the wire and the terminal, and the wire pressing work is completed.

Description

Technical Field

[0001] This application relates to the field of terminal wire connection technology, and in particular to a guide gripper and terminal crimping device. Background Technology

[0002] The terminal comprises a crimping portion and an end portion. The crimping portion is used to crimp a wire, and the end portion is the connector for connecting the terminal to other conductors during use. The crimping portion is a cylindrical structure. When connecting the crimping portion to the wire, the wire core needs to be guided into the cylindrical structure, and then crimped to compact the crimping portion and the wire, preventing the wire from falling off. During this process, misalignment of the wire core when guiding it into the cylindrical structure can easily lead to wire bending, affecting production efficiency. One idea is to use a guide; however, the presence of a guide would interfere with the operation of the stamping head due to the need to crimp the wire and the terminal. Utility Model Content

[0003] This application provides a guide gripper and terminal crimping device, which solves the problem that it is not easy to align the wire when it is inserted into the terminal crimping part without a guide, and that setting a guide will affect the operation of the punching head.

[0004] This application provides a terminal crimping device, comprising a guide gripper, a terminal gripper, a first driving device, a second driving device, and a support portion for operation with a punching head. The guide gripper is disposed at the opening of the terminal gripper. The guide gripper closes to form a conduit. The terminal gripper and the guide gripper are disposed on the support portion. The first driving device drives the support portion to reciprocate along the axial direction of the conduit between a crimping position and a first position. The second driving device drives the guide gripper to reciprocate between a crimping position close to the terminal gripper and a third position away from the terminal gripper.

[0005] Preferably, the pipe sequentially includes a guide hole, a blocking part, and a limiting hole along the same axial direction. The guide hole is trumpet-shaped, with the larger opening end away from the terminal clamp and the smaller opening end connected to the blocking part. The blocking part and the limiting hole form a stepped hole. The diameter of the limiting hole is larger than that of the blocking part.

[0006] In one embodiment, the guide gripper is equipped with a third drive device for controlling the opening and closing of the guide gripper; the terminal gripper is equipped with a fourth drive device for controlling the opening and closing of the terminal gripper.

[0007] In one embodiment, the second drive device drives the guide gripper to reciprocate toward or away from the terminal gripper along the pipe axis; or, the second drive device drives the guide gripper to reciprocate toward or away from the terminal gripper perpendicular to the pipe axis.

[0008] In one embodiment, the mechanical combination of the guide gripper and the terminal gripper includes: a near-close state where the terminal gripper and the guide gripper are closed, with the guide gripper in a first position; a near-close state where the terminal gripper and the guide gripper are closed, with the guide gripper in a second position; a far-away state where the terminal gripper is closed, the guide gripper is open, and the guide gripper is in a third position; and a far-away state where the terminal gripper and the guide gripper are open, with the guide gripper in a third position. The first and second positions represent the two ends of the axial movement of the bearing portion driven by the first driving device in the pipe. The second and third positions represent the two ends of the axial movement of the guide gripper driven by the second driving device.

[0009] In one embodiment, this application proposes a guide gripper with two openable arms. The closing surface has a groove to close the guide gripper to form a pipe. The pipe sequentially includes a guide hole, a blocking part, and a limiting hole along the same axis. The guide hole is flared, with the smaller opening end connected to the blocking part. The blocking part and the limiting hole form a stepped hole. The diameter of the limiting hole is larger than that of the blocking part.

[0010] The above-described technical solutions adopted in the embodiments of this application can achieve the following beneficial effects:

[0011] This application uses a guide gripper to provide positioning when the wire core is inserted into the terminal. To avoid obstruction, the guide gripper can also make room for the punch head to press the wire and terminal together after the wire core is inserted into the terminal, thus completing the wire crimping process. The solution of this application improves the working efficiency of the wire crimping machine. Attached Figure Description

[0012] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0013] Figure 1 This is a terminal structure diagram applicable to this application;

[0014] Figure 2 A structural diagram of a terminal crimping device provided in an embodiment of this application;

[0015] Figure 3 A diagram of the guide gripper structure provided in an embodiment of this application;

[0016] Figure 4 This is a structural diagram of the guide gripper and terminal gripper assembly provided in an embodiment of this application;

[0017] Figure 5This is a schematic diagram illustrating the position change of the guide gripper provided in an embodiment of this application;

[0018] Figure 6 The timing diagram of the guide gripper and terminal gripper provided in the embodiments of this application. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] The technical solutions provided by the various embodiments of this application are described in detail below with reference to the accompanying drawings.

[0021] Figure 1 This is a diagram illustrating the terminal structure applicable to this application. The terminal includes a crimping portion and an end portion. The crimping portion is used to crimp a wire, and the end portion is the connector for connecting the terminal to other conductors during use. For example, the end portion of the terminal may be a ring-shaped or fork-shaped metal piece, while the crimping portion is a cylindrical structure. The bare terminal is made of metal; some terminals have an insulating layer covering the outer surface of the crimping portion. The diagram shows some terminals such as the SV fork-type terminal and the RV round terminal; other types of terminals, such as the DBV insert terminal, the PTV pin terminal, and the spring-loaded terminal, are similar.

[0022] Figure 2 The present application provides a structural diagram of a terminal crimping device, which includes a guide gripper 1, a terminal gripper 2, a first driving device 5, a second driving device 4, and a support part 3 that work in conjunction with a punching head.

[0023] The terminal gripper is used to hold the end of the terminal. A guide gripper is provided at the opening of the terminal gripper, and the guide gripper closes to form a channel. Preferably, during guiding operations, the terminal gripper and the guide gripper respectively restrict both ends of the terminal.

[0024] The closing surface of the guide gripper has opposing grooves, which form a channel when the gripper is closed. The opening of the channel on the side away from the terminal gripper is larger than the diameter of the wire. Furthermore, the opening at the end with the larger diameter than the wire is larger than the opening at the other end.

[0025] It should be noted that, Figure 2The dashed lines in the diagram indicate the driving connection relationship. The first driving device drives the support portion to reciprocate along the axial direction of the pipe between a crimping position and a first position. The second driving device drives the guide gripper to reciprocate between a crimping position close to the terminal gripper and a third position away from the terminal gripper. Further, a third driving device 6 is included, which controls the two arms of the guide gripper to close or open. Similarly, the terminal gripper is equipped with a fourth driving device for controlling the opening and closing of the terminal gripper.

[0026] Preferably, the driving device (including a second driving device and a first driving device) is a cylinder structure, which pushes the guide gripper to move closer to or away from the terminal gripper. The cylinder pushes the carrier part to drive the guide gripper and the terminal gripper to move closer to or away from the wire. Alternatively, the driving device is a motor and lead screw structure.

[0027] The terminal clamp and the guide clamp are disposed on the support portion. The terminal clamp is fixedly disposed on the support portion, and its opening direction is directly opposite to the opening of the pipe. For example, the support portion is a plate-shaped structure, and the terminal clamp opening is fixedly disposed on the support portion with its opening facing vertically outward.

[0028] The first driving device can be located on the side of the bearing portion away from the guide gripper, and is used to drive the bearing portion to reciprocate along the axial direction of the pipe. Since the purpose of the reciprocating motion is to move the terminal gripper and guide gripper closer to or away from the wire, the first driving device can only drive the bearing portion to move along the axial direction of the pipe.

[0029] The support unit is fixedly connected to the first driving device, so the support unit is not affected by other driving forces except by the first driving device. For example, the first driving device is fixedly mounted on the equipment frame and pushes the guide gripper and terminal gripper to move.

[0030] Furthermore, the terminal clamp is fixedly mounted on the support and is not affected by other drives. After the second drive device is activated, it only pushes the guide clamp to reciprocate towards or away from the terminal clamp. The guide clamp is connected to the support via the second drive device. For example, one end of the second drive device is fixedly connected to the plate surface of the support where the terminal clamp is mounted, and the other end of the second drive device is fixedly connected to the guide clamp. Because the opening of the guide clamp is away from the second drive device, the pipe opening can be directly opposite the opening of the terminal clamp.

[0031] like Figure 3 As shown, preferably, the pipe includes a guide hole 11, a blocking part 12 and a limiting hole 13 connected sequentially from one end to the other, and these structures can be integrally formed.

[0032] Furthermore, the guide hole has a linear transition from one opening to the other, and when the guide gripper is closed, the guide hole is flared. The end with the larger opening is away from the terminal gripper, and the end with the smaller opening connects to the blocking part.

[0033] For example, the guide hole has an opening larger than the wire diameter on the side away from the terminal gripper, and the other side is close to the diameter of the blocking part. The guide hole is used to ensure that the wire can accurately enter the crimping part during wire feeding; therefore, the opening of the guide hole on the side away from the terminal gripper is larger than the opening of the connecting blocking part.

[0034] Preferably, both the blocking part and the limiting hole are circular holes.

[0035] The inner diameter of the blocking portion, i.e., the inner diameter of the relatively narrow end of the guide hole, is greater than a first threshold and less than a second threshold. For example, the first threshold is the diameter of the wire core, and the second threshold is the inner diameter of the terminal crimping portion. When the processed wire diameter is small, the inner diameter of the blocking portion can also be greater than the outer diameter of the wire insulation.

[0036] The diameter of the limiting hole is larger than that of the blocking part, and the inner diameter of the limiting hole is slightly larger than the outer diameter of the crimping part of the terminal, for accommodating the crimping part of the terminal. The limiting hole's diameter is slightly larger than that of the crimping part of the terminal, so that when the clamp is closed, the crimping part of the terminal enters the limiting hole, facilitating the entry of the wire into the crimping part.

[0037] It should be noted that the wire insulation is stripped off the end of the conductor beforehand using a wire stripper, leaving the conductor core exposed. In actual use, after the conductor core is inserted into the terminal crimping part, the limiting hole should be open and moved away from the crimping part to allow the crimping head to crimp the terminal.

[0038] like Figure 4 As shown, during the guiding operation, the terminal clamp and the guide clamp respectively restrict the two ends of the terminal. When the terminal clamp holds the end of the terminal, the crimping part of the terminal extends into the limiting hole of the guide clamp.

[0039] The closing surface of the terminal gripper is adapted to the shape of the end of the terminal. For example, the end of the terminal is a circular or fork-shaped metal piece, and the closing surface of the terminal gripper is a planar structure.

[0040] When the guide gripper approaches the terminal gripper, the terminal gripper clamps the end of the terminal, and the crimping portion of the terminal enters between the closed surfaces of the guide gripper.

[0041] When the terminal clamp and the guide clamp approach each other, the distance between them ensures that when the terminal clamp holds the end of the terminal, the crimping portion of the terminal enters the limiting hole.

[0042] The terminal crimping device described in this application completes the connection of wires and terminals. It requires changing the working position, and the guide gripper and terminal gripper cooperate to control the opening and closing state.

[0043] like Figure 5 As shown, the working positions include a first position, a second position, and a third position. The second position is the aforementioned crimping position. The first and second positions are the two ends where the first driving device drives the bearing part to move axially along the pipe. The second and third positions are the two ends where the second driving device drives the guide gripper to move.

[0044] like Figure 5 As shown, the second drive device drives the guide gripper to reciprocate between a crimping position close to the terminal gripper and a third position away from the terminal gripper. The second drive device drives the guide gripper away from the terminal gripper to make room for the punch head. It should be noted that since the wire passes through the guide gripper into the terminal, it can only move away from the terminal gripper when the guide gripper is opened.

[0045] In one embodiment, the second drive device drives the guide gripper to reciprocate toward or away from the terminal gripper along the pipe axis. In another embodiment, the second drive device drives the guide gripper to reciprocate toward or away from the terminal gripper perpendicular to the pipe axis.

[0046] The mechanical combination of the guide gripper and the terminal gripper includes: an approach state and a moving away state. When the carrier moves between the first position and the second position, the terminal gripper and the guide gripper are in the approach state and their relative positions remain unchanged; when the guide gripper moves between the second position and the third position, the terminal gripper and the guide gripper are in the moving away state and their relative positions change.

[0047] The approach state specifically includes the following mechanical combinations 1 to 4:

[0048] Mechanical assembly 1: The terminal gripper and guide gripper are in the closed state, and the guide gripper is in the first position;

[0049] At this point, the guide gripper and terminal gripper are in a close proximity state, and the first drive device is not operating, meaning it is not pushing the guide gripper and terminal gripper towards the wire. At this time, the terminal gripper holds the terminal, and the crimping portion of the terminal enters the limiting hole of the guide gripper.

[0050] Mechanical assembly 2: The terminal gripper and guide gripper are in the closed state, and the guide gripper is in the second position;

[0051] At this time, the guide gripper and the terminal gripper are in a close proximity state, such as... Figure 6As shown, in the first period, the first drive device starts operating, pushing the guide gripper and terminal gripper towards the wire to the second position, changing from mechanical assembly 1 to mechanical assembly 2. The second position is the crimping position for the stamping head operation.

[0052] The first drive unit operates, causing the guide gripper and terminal gripper to move axially toward the end of the wire, so that the end of the wire is fed into the guide gripper, and the wire core passes through the blocking part into the crimping part of the terminal located in the limiting hole.

[0053] Mechanical assembly 3: Terminal clamp is closed, guide clamp is open, and guide clamp is in the second position;

[0054] like Figure 6 As shown, in the second time period, the mechanical assembly first changes from mechanical assembly 2 to mechanical assembly 3, with the terminal gripper in a closed state and the guide gripper in an open state. Then, the second drive device operates to move the guide gripper away from the terminal gripper, that is, from the second position to the third position, changing the mechanical assembly from mechanical assembly 3 to mechanical assembly 5 (see below). Then, the second drive device drives the guide gripper to move, and the guide gripper and terminal gripper change from an approaching state to a moving away state.

[0055] Mechanical assembly 4: Terminal clamp open, guide clamp open, guide clamp in the second position.

[0056] like Figure 6 As shown, at the end of the third time period, the guide gripper is then driven to move via the second drive device, and the guide gripper and terminal gripper change from the far-away state to the near-away state. The guide gripper and terminal gripper return to the near-away state and the guide gripper is in the second position, changing from mechanical combination 6 (see below) to mechanical combination 4.

[0057] The remote state includes the following mechanical combinations 5 to 6:

[0058] Mechanical assembly 5: The terminal gripper is in the closed state, the guide gripper is in the open state, and the guide gripper is in the third position.

[0059] Since the second position is the crimping position for the stamping head, the guide gripper needs to move away from the terminal gripper under the drive of the second drive device to make room for the stamping head. The terminal gripper closes to hold the terminal, allowing the stamping head to apply compressive deformation force to the terminal.

[0060] The third position refers to the furthest distance that the guide gripper can reach from the terminal gripper. It should be noted that the third position can be either the guide gripper moving along the conductor axis or the guide gripper being in an open state, with the two halves of the gripper opening away in two directions perpendicular to the conductor axis. No further limitation is made here.

[0061] Mechanical assembly 6: Both the terminal clamp and the guide clamp are in the open position, with the guide clamp in the third position.

[0062] At this point, after the terminal is compressed and deformed by the stamping head, the terminal clamp opens and releases the clamped terminal.

[0063] like Figure 6 As shown, the third time period is divided into four parts. The first part is the stamping interval. During this time period, since there is no obstruction from the guide gripper, the stamping head approaches the crimping part of the terminal from a direction perpendicular to the wire axis, and completes the crimping of the wire and the terminal.

[0064] During the second time period, after the wire and terminal are crimped, the terminal clamp changes from the closed state to the open state, while the guide clamp remains open, and the mechanical assembly 6 is entered.

[0065] The third part is the wire removal section. During this time period, the wire with the terminal is removed from the terminal clamp, and the wire crimping work is completed.

[0066] Next, as Figure 6 As shown, in the fourth part of the third time period, the guide gripper moves from the third position to the second position. At the end of the third time period, the guide gripper and the terminal gripper return to the proximity state, and the guide gripper is located in the second position. During the process of the guide gripper moving from the third position to the second position, the guide gripper is in an open state, changing from mechanical combination 6 to mechanical combination 4.

[0067] Furthermore, such as Figure 6 As shown, the fourth time period includes a feeding zone for loading terminals into the open terminal grippers. After loading, the terminal grippers will close to hold the terminals, changing from mechanical assembly 4 to mechanical assembly 1.

[0068] During the process of changing from mechanical combination 4 to mechanical combination 1, the guide gripper can move from the second position to the first position at any time during the fourth time period. At any time between the end of the feeding interval and the end of the fourth time period, the guide gripper changes from the open state to the closed state, thereby completing the restriction of the terminal crimping part by the guide gripper, such as closing the limiting hole to accommodate the terminal crimping part, and preparing the guide wire for the first time period of the next working cycle.

[0069] It should be noted that, in order to explain the working principle, ​ Different time periods are represented as having the same length, but in reality, the duration of different time periods can be different, and no further restrictions are made here.

[0070] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A terminal crimping device, characterized in that, It includes a guide gripper, a terminal gripper, a first drive device, a second drive device, and a support unit that work in conjunction with the stamping head; A guide gripper is provided at the opening of the terminal gripper; The guide clamp closes to form a pipe; The terminal clamp and the guide clamp are disposed on the bearing portion; The first driving device is used to drive the bearing part to reciprocate between the crimping position and the first position along the axial direction of the pipe; The second driving device is used to drive the guide gripper to reciprocate between a crimping position close to the terminal gripper and a third position away from the terminal gripper.

2. The terminal crimping device according to claim 1, characterized in that, The pipeline sequentially includes a guide hole, a blocking part, and a limiting hole along the same axis; The guide hole is trumpet-shaped, with the larger opening end away from the terminal clamp and the smaller opening end connected to the blocking part. The blocking part and the limiting hole constitute a stepped hole; The diameter of the limiting hole is larger than that of the blocking part.

3. The terminal crimping device according to claim 1, characterized in that, The guide gripper is equipped with a third drive device for controlling the opening and closing of the guide gripper; the terminal gripper is equipped with a fourth drive device for controlling the opening and closing of the terminal gripper.

4. The terminal crimping device according to claim 1, characterized in that, The second drive device drives the guide gripper to reciprocate along the pipe axis, moving closer to or further away from the terminal gripper. or, The second drive device drives the guide gripper to reciprocate towards or away from the terminal gripper in a direction perpendicular to the pipe axis.

5. The terminal crimping device according to any one of claims 1 to 4, characterized in that, The mechanical combination of the guide gripper and the terminal gripper includes the terminal gripper and the guide gripper in a proximity state: The terminal clamp and guide clamp are closed, with the guide clamp in the first position; The terminal clamp and guide clamp are closed, with the guide clamp in the second position; The terminal clamp is closed, the guide clamp is open, and the guide clamp is in the second position; The terminal clamp and guide clamp are open, with the guide clamp in the second position; The first position and the second position are the two ends where the first driving device drives the bearing part to move axially along the pipe.

6. The terminal crimping device according to claim 5, characterized in that, The mechanical combination of the guide gripper and the terminal gripper includes the terminal gripper and the guide gripper in a remote state: The terminal clamp is closed, the guide clamp is open, and the guide clamp is in the third position; The terminal clamp is open, the guide clamp is open, and the guide clamp is in the third position; The second and third positions are the two ends where the second drive device drives the guide gripper to move.

7. A guide gripper, characterized in that, The device is equipped with two openable arms, and the closing surface has a groove to allow the guide gripper to close and form a pipe. The pipe sequentially includes a guide hole, a blocking part, and a limiting hole in the same axial direction. The guide hole is trumpet-shaped, with the smaller opening end connected to the blocking part. The blocking part and the limiting hole form a stepped hole. The diameter of the limiting hole is larger than that of the blocking part.

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