Lever type terminal crimping machine

Abstract

The utility model discloses a lever type terminal crimping machine. The mechanism comprises a supporting assembly, a lever assembly, an upper module, a lower module and a linkage assembly. The supporting assembly is composed of a base and a supporting frame, and the lever assembly is arranged on the supporting plate and comprises a pressing rod, a sliding rod and a connecting rod. The upper die set comprises a guide column, an upper die base, a reset spring and an upper die block. The lower die set is provided with a sliding rail, a lower die base, a lower die block, a limiting block, a positioning pin and a wire clamping assembly. The linkage assembly is composed of a chain wheel, a chain, a sliding sleeve, a guide rod and a compression spring. The crimping machine drives the upper die set through the lever assembly, and then drives the lower die base to crimp the terminal through the linkage assembly. Compared with the prior art, the automobile wire harness terminal crimping tool solves the problems that an operator is easily injured when placing a terminal and time is consumed when the lower die is manually pushed, has the advantages of being safe in operation, high in efficiency, high in crimping precision and reliability and the like, and can be effectively applied to automobile wire harness terminal crimping.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, specifically a lever-type terminal crimping machine. Background Technology

[0002] Automotive wiring harness terminals are connectors used to connect different wires or components in an automotive electrical system. They are usually made of metal, come in various shapes, and can be connected to wires by crimping or other methods. They can also be used with other terminals or electrical equipment interfaces to form a complete circuit.

[0003] In existing technology, when placing terminals, operators must place them in the area between the upper and lower dies. Because the crimping operation may be accidentally triggered or encounter other unforeseen circumstances, once the equipment is started, the operator's hands and other body parts are easily pinched by the upper and lower dies, posing a significant safety risk and seriously threatening the operator's personal safety.

[0004] Although existing technology incorporates a sliding lower die, operators still need to manually push the lower die towards the upper die. This manual operation is not only time-consuming but also increases the duration of a single crimping operation. Utility Model Content

[0005] The purpose of this invention is to provide a lever-type terminal crimping machine to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A lever-type terminal crimping machine includes a support assembly, a lever assembly on the support assembly, an upper module and a lower module on the support assembly, the lever assembly being connected to the support assembly, and a linkage assembly between the upper module and the lower module. The lever assembly drives the upper module to move, and when the upper module moves, the linkage assembly drives the lower module to move, thereby crimping the terminal.

[0008] Preferably, the support assembly includes a base and a support frame, the support frame being fixedly mounted on the base, and a support plate being fixedly mounted on the support frame;

[0009] The lever assembly is mounted on the support plate. The lever assembly includes a pressure rod and a sliding rod that are movably mounted on the support plate. The pressure rod is rotatably mounted, and the sliding rod is slidably mounted. A connecting rod is rotatably mounted between the sliding rod and the pressure rod.

[0010] Preferably, the upper module includes a guide post fixedly mounted on the base, an upper mold base slidably mounted on the guide post, a return spring sleeved on the guide post, the upper mold base being fixedly connected to the slide rod of the lever assembly, and an upper module being fixedly mounted on the upper mold base;

[0011] The lower module includes a slide rail fixedly mounted on the base, a lower mold base slidably mounted on the slide rail, a lower module fixedly mounted on the lower mold base, and a limit block fixedly mounted on the base.

[0012] Preferably, the linkage component includes a sprocket rotatably mounted on a support frame, a chain wound around the sprocket, and one end of the chain being fixedly connected to the upper mold base;

[0013] A sliding sleeve is fixedly installed on the lower mold base, and a guide rod is slidably installed in the sliding sleeve. One end of the guide rod is fixedly connected to the other end of the chain, and a compression spring is sleeved between the guide rod and the sliding sleeve.

[0014] Preferably, a guide rod is fixedly provided on the base, the guide rod passes through the lower mold base, and a return spring is sleeved on the guide rod, the elastic force of the return spring being less than that of the compression spring.

[0015] Preferably, the lower module is further provided with a wire clamping assembly, the wire clamping assembly including a wire support plate fixedly disposed on the lower mold base, and a wire guide plate fixedly disposed on the wire support plate;

[0016] A vertical shaft is fixedly mounted on the lower mold base, and two wire clamping rods are rotatably mounted on the vertical shaft. A torsion spring is sleeved on the vertical shaft, and a trigger rod for triggering the rotation of the wire clamping rods is fixedly mounted on the base.

[0017] Preferably, a guide sleeve is fixedly provided on the upper mold base, and the guide post is sleeved in the guide sleeve.

[0018] Preferably, the lower module further includes a positioning pin fixedly mounted on the lower mold base.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] This application utilizes a lever assembly to move the upper die assembly, which in turn moves the lower die base via a linkage assembly, thus achieving terminal crimping. Operators do not need to manually push the lower die closer to the upper die in the hazardous area between the upper and lower dies; they only need to operate the lever assembly's pressure rod to complete the entire crimping action. This keeps the operator's hands and other body parts away from the potential danger zone of being pinched by the upper and lower dies, effectively preventing pinching accidents caused by equipment mis-triggered or other unforeseen events, greatly improving operational safety and protecting the operator's personal safety.

[0021] 2. The upper and lower die bases are linked via sprockets and chains. When the operator rotates the lever assembly to move the upper die base, the lower die base will automatically move closer to the upper die base under the drive of the chain. This eliminates the need for the operator to manually push the lower die base, reducing the time spent manually pushing the lower die base in a single pressing operation. This makes the entire pressing process more continuous and efficient, thereby improving work efficiency.

[0022] 3. The positioning pins in the lower module can accurately position the terminals, the wire support plate and the wire guide plate can initially position the wires, and the wire clamping assembly can also clamp the wires during the crimping process to prevent wire displacement. These measures ensure that the terminals and wires are accurately positioned during the crimping process, thereby guaranteeing the crimping quality and improving the accuracy and reliability of the crimping. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the overall device of this utility model in its initial state;

[0024] Figure 2 This is a three-dimensional structural diagram of the overall device of this utility model in the pressing state;

[0025] Figure 3 This is a left view of the initial state of this utility model;

[0026] Figure 4 This is a left view of the present invention in the crimping state;

[0027] Figure 5 This is a three-dimensional structural diagram of the linkage component of this utility model;

[0028] Figure 6 This is a three-dimensional structural diagram of the lower module of this utility model;

[0029] Figure 7 This is a three-dimensional structural diagram of the wire clamping assembly of this utility model;

[0030] Figure 8 This is a top view of the initial state of the wire clamping assembly of this utility model;

[0031] Figure 9 This is a top view of the working state of the wire clamping assembly of this utility model.

[0032] In the diagram: 1. Support assembly; 11. Base; 12. Support frame; 13. Support plate; 2. Lever assembly; 21. Pressure rod; 22. Slide rod; 23. Connecting rod; 3. Upper module; 31. Guide post; 32. Upper mold base; 33. Return spring; 34. Upper module; 35. Guide sleeve; 4. Lower module; 41. Slide rail; 42. Lower mold base; 43. Lower module; 44. Limit block; 45. Positioning pin; 46. Guide rod; 47. Return spring; 5. Linkage assembly; 51. Sprocket; 52. Chain; 53. Slide sleeve; 54. Guide rod; 55. Compression spring; 6. Wire clamping assembly; 61. Wire support plate; 62. Guide plate; 63. Vertical shaft; 64. Wire clamping rod; 65. Torsion spring; 66. Trigger rod. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Please see Figure 1-9 This utility model provides a technical solution:

[0035] Example 1:

[0036] A lever-type terminal crimping machine plays a crucial role in the field of electrical wiring connections in automotive manufacturing. The components and working process of this crimping machine are described in detail below.

[0037] Support assembly 1 is the basic structure of the entire crimping machine, consisting of a base 11 and a support frame 12. The base 11 provides a stable support platform for the entire equipment, and the support frame 12 is firmly fixed to the base 11 by welding or bolting. On the top of the support frame 12, a support plate 13 is also fixedly installed by welding or bolting, which provides the mounting base for the subsequent lever assembly 2.

[0038] The lever assembly 2 is mounted on the support plate 13 and mainly includes a pressure rod 21 and a sliding rod 22. The pressure rod 21 is movably mounted on the support plate 13 via a rotating connecting component such as a pivot or pin, allowing the pressure rod 21 to rotate about this connection point. The sliding rod 22 slides on the support plate 13 via a sliding connecting structure such as a sliding cylinder. The sliding rod 22 and the pressure rod 21 are rotatably connected by a connecting rod 23, with both ends of the connecting rod 23 connected to the pressure rod 21 and the sliding rod 22 respectively via pins or similar rotating connecting components, thereby realizing the motion transmission between the two.

[0039] The guide post 31 of the upper module 3 is vertically fixed to the base 11 to ensure its stability. The upper mold base 32 is slidably connected to the guide post 31 through the guide sleeve 35. The guide sleeve 35 is tightly fitted onto the guide post 31, and the guide sleeve 35 is connected to the upper mold base 32 by bolts or other means, ensuring that the upper mold base 32 can slide smoothly up and down along the guide post 31. A return spring 33 is also fitted on the guide post 31. One end of the return spring 33 abuts against the base 11, and the other end contacts the upper mold base 32, providing an upward return force for the upper mold base 32.

[0040] The upper module 34 is fixedly installed at the bottom of the upper mold base 32 by bolts or other suitable fastening methods, and cooperates with the lower module 43 to complete the terminal crimping work.

[0041] The slide rail 41 of the lower module 4 is horizontally fixed on the base 11. The lower mold base 42 is connected to the slide rail 41 through a slider or groove, etc., to achieve smooth sliding of the lower mold base 42 on the slide rail 41. At the bottom of the lower mold base 42, a slider that matches the slide rail 41 is usually provided. The slider is embedded in the groove of the slide rail 41 to ensure the stability of the movement of the lower mold base 42.

[0042] The lower module 43 is also fixedly installed on the top of the lower mold base 42 by bolts or other fastening methods, corresponding to the upper module 34, and is used to place terminals and complete the crimping operation together with the upper module 34.

[0043] The limiting block 44 is fixedly installed on the base 11 and located on the movement path of the lower mold base 42. When the lower mold base 42 slides along the slide rail 41 to a certain position, it will contact the limiting block 44, thereby restricting the movement of the lower mold base 42 to move further closer to the upper mold base 32.

[0044] The lower module 4 also includes a positioning pin 45 fixedly mounted on the lower mold base 42. The positioning pin 45 is used to accurately position the terminal when placing it, ensuring that the terminal is in the correct position during the crimping process. The positioning pin 45 is securely mounted on the lower mold base 42 by means of interference fit or threaded connection.

[0045] A guide rod 46 is vertically fixed on the base 11, and the guide rod 46 passes through the lower mold base 42. The lower mold base 42 has a through hole that matches the guide rod 46, allowing the guide rod 46 to pass through smoothly. A return spring 47 is sleeved on the guide rod 46. One end of the return spring 47 abuts against the base 11, and the other end contacts the lower mold base 42, providing a return force to the lower mold base 42. The force of the return spring 47 is less than that of the compression spring 55 mentioned later.

[0046] The linkage assembly 5 mainly consists of a sprocket 51 and a chain 52. The sprocket 51 is rotatably mounted on the support frame 12 via bearings or other suitable rotating connecting parts, ensuring that the sprocket 51 can rotate flexibly. The chain 52 is wound around the sprocket 51. One end of the chain 52 is fixedly connected to the upper mold base 32 by welding, bolting, or hooking, and the other end is connected to the guide rod 54. A sliding sleeve 53 is fixedly mounted on the lower mold base 42. The sliding sleeve 53 is installed on the lower mold base 42 by welding or bolting. One end of the guide rod 54 is inserted into the sliding sleeve 53 to achieve a sliding connection. A compression spring 55 is sleeved between the guide rod 54 and the sliding sleeve 53. One end of the compression spring 55 abuts against the bottom of the sliding sleeve 53, and the other end contacts the guide rod 54, providing elastic cushioning for the guide rod 54.

[0047] The operator rotates the pressure rod 21 downwards, causing it to rotate around the rotation connection point on the support plate 13. Since the sliding rod 22 and the pressure rod 21 are rotatably connected by the connecting rod 23, the rotation of the pressure rod 21 causes the sliding rod 22 to slide downwards on the support plate 13 via the connecting rod 23.

[0048] The downward sliding of the slide bar 22 causes the upper mold base 32 to move downward along the guide post 31, which is vertically fixed to the base 11. At the same time, the return spring 33, which is sleeved on the guide post 31, is compressed and stores elastic potential energy. When the operator releases the pressure bar 21, the return spring 33 releases its elastic potential energy and pushes the upper mold base 32 upward to reset.

[0049] like Figure 1-4 As shown, during the initial approach: when the upper mold base 32 moves downward, one end of the chain 52 fixedly connected to the upper mold base 32 moves downward accordingly, causing the chain 52 wrapped around the sprocket 51 to rotate, thereby pulling the guide rod 54 connected to the other end of the chain 52. The guide rod 54 is inserted into the sliding sleeve 53 fixed on the lower mold base 42. Due to the pressure of the compression spring 55, the guide rod 54 pulls the lower mold base 42 to slide along the slide rail 41 on the base 11 towards the upper mold base 32. When the lower mold base 42 contacts the limiting block 44 on the base 11, the lower mold base 42 stops moving, and the guide rod 54 compresses the compression spring 55 sleeved on the guide rod 46.

[0050] Subsequent coordination: The upper mold base 32 continues to move downward. At this time, the lower mold base 42 is restricted by the limit block 44 and cannot move further. The guide rod 54 continues to slide in the sliding sleeve 53 under the pull of the chain 52, squeezing the compression spring 55 between the sliding sleeve 53 and the guide rod 54, providing buffer and cooperation for the continued downward movement of the upper mold base 32, until the upper mold base 32 and the lower mold base 42 cooperate to complete the crimping of the terminal and wire.

[0051] Reset: After crimping is completed, release the pressure rod 21. The upper mold base 32 moves upward under the action of the reset spring 33. The reset spring 47 drives the lower mold base 42 to move away from the upper mold base 32 along the slide rail 41, so that the crimping machine returns to the initial state and is ready for the next crimping operation.

[0052] Example 2:

[0053] In Embodiment 2, a wire clamping assembly 6 is added to the lower module 4.

[0054] like Figure 6-9 As shown, the wire clamping assembly 6 includes a wire support plate 61 fixedly mounted on the lower mold base 42. The wire support plate 61 is securely mounted on the lower mold base 42 by welding or bolting. A conductor plate 62 is also fixedly mounted on the wire support plate 61 by welding or bolting, for initial positioning of the conductor. A vertical shaft 63 is also vertically fixed on the lower mold base 42, mounted by interference fit or threaded connection. Two wire clamping rods 64 are rotatably mounted on the vertical shaft 63, symmetrically distributed on both sides of the vertical shaft 63, and rotatably connected to the vertical shaft 63 by bushings or similar rotating connecting components. A torsion spring 65 is sleeved on the vertical shaft 63, one end of which is fixed to the vertical shaft 63, and the other end is connected to the wire clamping rod 64, providing rotational torque for the wire clamping rod 64. A trigger rod 66 for triggering the rotation of the clamp rod 64 is fixedly installed on the base 11. The trigger rod 66 is connected to the base 11 by welding or bolt connection.

[0055] In the initial position, both ends of the clamping rod 64 are in contact with the trigger rod 66 fixed on the base 11. At this time, the torsion spring 65 is in a compressed state, storing elastic potential energy. Due to the blocking effect of the trigger rod 66, the clamping rod 64 is in an open state at the contact position with the wire, and does not contact the wire, so that the operator can place the wire and terminal.

[0056] Preparing to crimp

[0057] When the operator places the wire on the wire plate 62 on the wire support plate 61 for initial positioning, and at the same time places the terminal on the lower mold base 42 to complete the positioning, the operator starts to rotate the pressure rod 21 to start the crimping operation.

[0058] Wire clamping process

[0059] like Figure 9 As shown, with the rotation of the pressure rod 21, the lower die base 42 drives the wire clamping assembly 6 to move closer to the upper die base 32. During this process, the two ends of the wire clamping rod 64 gradually disengage from the trigger rod 66. As the wire clamping rod 64 gradually disengages from the trigger rod 66, the elastic potential energy stored in the torsion spring 65 is released, and the resulting torque drives the wire clamping rod 64 to rotate around the vertical axis 63. Since there are two wire clamping rods 64 and they are symmetrically distributed, they rotate synchronously, thereby clamping the wire placed on the conductor plate 62, preventing the wire from shifting during the crimping process, and ensuring the crimping quality.

[0060] Reset state

[0061] After crimping is completed, the lower die base 42 returns to its initial position. During this process, both ends of the clamping rod 64 contact the trigger rod 66 again. The trigger rod 66 blocks the rotation of the clamping rod 64, causing the clamping rod 64 to overcome the torque of the torsion spring 65 and return to the open state, as shown. Figure 8 As shown, this prepares for the next crimping operation.

[0062] Working principle:

[0063] (I) Preparation Stage

[0064] like Figure 1 and Figure 3 As shown, in the initial state, the upper mold base 32 is in its highest position under the action of the return spring 33. At this time, the return spring 33 is in a pre-compressed state and stores a certain amount of elastic potential energy. At the same time, the return spring 47 is also in a pre-compressed state, and the lower mold base 42 is in a position away from the upper mold base 32 under the action of the return spring 47. For the wire clamping assembly 6 in Embodiment 2, both ends of the wire clamping rod 64 are in contact with the trigger rod 66, the torsion spring 65 is in a compressed state, and the position where the wire clamping rod 64 contacts the wire is in an open state and does not contact the wire.

[0065] (II) Preparation for crimping

[0066] like Figure 6 As shown, when crimping terminals onto wires, the operator first places the terminal in the lower die base 42 and uses the positioning pin 45 to precisely position the terminal, ensuring accurate positioning during the crimping process. Then, the wire is placed through the wire support plate 61, and the wire support plate 62 provides initial positioning for the wire.

[0067] (III) Crimping process

[0068] When the upper mold base 32 and the lower mold base 42 are close together: (e.g.) Figure 2 and Figure 4 As shown, the operator rotates the pressure rod 21 downwards. The pressure rod 21 rotates around the rotation connection point on the support plate 13, driving the slide rod 22 downwards via the connecting rod 23. Since the slide rod 22 is fixedly connected to the upper mold base 32, the downward movement of the slide rod 22 drives the upper mold base 32 downwards along the guide post 31. At the same time, the downward movement of the upper mold base 32 drives the sprocket 51 to rotate via the chain 52, which in turn causes the other end of the chain 52 to pull the guide rod 54. The guide rod 54 drives the lower mold base 42 to move along the slide rail 41 towards the upper mold base 32.

[0069] At the same time, the two ends of the clamping rod 64 disengage from the trigger rod 66, and the clamping rod 64 rotates under the drive of the torsion spring 65, as... Figure 9 As shown, this clamps the wire, preventing it from shifting during the crimping process and ensuring the quality of the crimping.

[0070] When the lower mold base 42 contacts the limit block 44, the lower mold base 42 stops moving. At this time, the upper mold base 32 has not yet reached the working position.

[0071] Crimping stage: As the upper die holder 32 continues to move downwards, the lower die holder 42 is blocked by the limit block 44 and cannot continue to move. At this time, the guide rod 54, driven by the chain 52, compresses the compression spring 55. The upper die holder 32 continues to move downwards and finally cooperates with the lower die holder 42 to crimp and form the terminal and wire.

[0072] (iv) Reset Phase

[0073] After crimping is completed, the operator releases the pressure rod 21. Under the action of the return spring 33, the upper die holder 32 moves upward, driving the lower die holder 42 along the slide rail 41 away from the upper die holder 32 via the chain 52. At the same time, the return spring 47 gradually returns to its original state, assisting the lower die holder 42 in resetting. For the wire clamping assembly 6, the wire clamping rod 64 returns to the open state under the action of the trigger rod 66, preparing for the next crimping operation.

[0074] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lever-type terminal crimping machine, comprising a support assembly (1), a lever assembly (2) disposed on the support assembly (1), and an upper module (3) and a lower module (4) disposed on the support assembly (1), characterized in that: The lever assembly (2) is connected to the support assembly (1). A linkage assembly (5) is provided between the upper module (3) and the lower module (4). The lever assembly (2) drives the upper module (3) to move. When the upper module (3) moves, the linkage assembly (5) drives the lower mold base (42) to move, thereby pressing the terminal.

2. The lever-type terminal crimping machine according to claim 1, characterized in that: The support assembly (1) includes a base (11) and a support frame (12). The support frame (12) is fixedly mounted on the base (11), and a support plate (13) is fixedly mounted on the support frame (12). The lever assembly (2) is mounted on the support plate (13). The lever assembly (2) includes a pressure rod (21) and a slide rod (22) movably mounted on the support plate (13). The pressure rod (21) is rotatably mounted, and the slide rod (22) is slidably mounted. A connecting rod (23) is rotatably mounted between the slide rod (22) and the pressure rod (21).

3. The lever-type terminal crimping machine according to claim 2, characterized in that: The upper module (3) includes a guide post (31) fixedly mounted on the base (11), an upper mold base (32) slidably mounted on the guide post (31), a return spring (33) sleeved on the guide post (31), the upper mold base (32) being fixedly connected to the slide rod (22) of the lever assembly (2), and an upper module (34) fixedly mounted on the upper mold base (32). The lower module (4) includes a slide rail (41) fixedly mounted on the base (11), a lower mold base (42) slidably mounted on the slide rail (41), a lower module (43) fixedly mounted on the lower mold base (42), and a limit block (44) fixedly mounted on the base (11).

4. The lever-type terminal crimping machine according to claim 3, characterized in that: The linkage component (5) includes a sprocket (51) rotatably mounted on the support frame (12), a chain (52) is wound around the sprocket (51), and one end of the chain (52) is fixedly connected to the upper mold base (32); A sliding sleeve (53) is fixedly installed on the lower mold base (42), and a guide rod (54) is slidably installed in the sliding sleeve (53). One end of the guide rod (54) is fixedly connected to the other end of the chain (52), and a compression spring (55) is sleeved between the guide rod (54) and the sliding sleeve (53).

5. A lever-type terminal crimping machine according to claim 3, characterized in that: A guide rod (46) is fixedly installed on the base (11). The guide rod (46) passes through the lower mold base (42). A reset spring (47) is sleeved on the guide rod (46). The elastic force of the reset spring (47) is less than that of the compression spring (55).

6. A lever-type terminal crimping machine according to claim 2, characterized in that: The lower module (4) is also provided with a wire clamping assembly (6), which includes a wire support plate (61) fixedly mounted on the lower mold base (42), and a wire guide plate (62) fixedly mounted on the wire support plate (61). A vertical shaft (63) is fixedly installed on the lower mold base (42), and a wire clamping rod (64) is rotatably installed on the vertical shaft (63). There are two wire clamping rods (64), which are symmetrically arranged on the vertical shaft (63). A torsion spring (65) is sleeved on the vertical shaft (63), and a trigger rod (66) for triggering the rotation of the wire clamping rod (64) is fixedly installed on the base (11).

7. A lever-type terminal crimping machine according to claim 4, characterized in that: A guide sleeve (35) is fixedly provided on the upper mold base (32), and the guide post (31) is sleeved in the guide sleeve (35).

8. A lever-type terminal crimping machine according to claim 3, characterized in that: The lower module (4) also includes a positioning pin (45) fixedly mounted on the lower mold base (42).

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