Crimping die and method for connection of wire harness and contact

Abstract

The invention relates to the related technical field of electrical connection, in particular to a crimping die and method for connection of a wire harness and a contact, and the crimping die comprises a workbench, the surface of the workbench is provided with a replacement mechanism, the upper surface of the workbench is provided with a clamping mechanism, and the lower surface of the workbench is provided with a clamping mechanism. According to the crimping die and method for connecting the wire harness and the contact, through the arrangement of the replacement mechanism, the clamping mechanism and the crimping mechanism, the replacement mechanism realizes rapid, convenient and stable installation and positioning of the die in a normal state, so that the die replacement operation is simple and efficient, the installation requirements of dies of different specifications can be met, and the production efficiency is improved. The clamping mechanism can meet the clamping requirements of wire harnesses and copper bushes with different specifications, materials and machining process requirements, the universality and adaptability of the equipment are improved, the crimping mechanism is easy to operate and high in automation degree, the production efficiency can be improved, and the production cost can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field related to electrical connection, and in particular to a crimping die and method for connecting a wire harness with a contact. Background Art

[0002] Electrical connection in a broad sense refers to the collection of all electrical circuits in electrical products, including power connection components such as power plugs, power terminals, power cords, internal wires, internal connection components, etc., while electrical connection in a narrow sense refers only to all ways of connecting different conductors inside the product. In many electrical equipment and systems, a stable connection between the wiring harness and the contact is crucial to ensure the smooth transmission of current and signals. The wiring harness is usually composed of multiple wires for transmitting current and signals, and the copper block serves as a connecting component to conduct electricity and fix. Therefore, a crimping die and method for connecting the wiring harness and the contact are particularly needed.

[0003] However, the existing connection methods between the wiring harness and the contact, such as welding and screw connection, have certain limitations in practical applications. Although welding can achieve a stronger connection, it is easy to generate thermal stress during the welding process, causing deformation of the contact surface and affecting the smoothness. In addition, welding requires professional equipment and technology, and the operation is relatively complicated. The screw connection method can provide a certain connection strength, but the screws are easy to loosen and may cause poor contact after long-term use. Moreover, the screw connection requires the processing of threaded holes on the bottom surface of the contact, which increases the production cost. Summary of the invention

[0004] The purpose of the present invention is to provide a crimping die and method for connecting a wire harness to a contact, so as to solve the existing connection methods of the wire harness to the contact proposed in the above background technology, such as welding, screw connection, etc. However, these connection methods have certain limitations in practical applications. Although the welding method can achieve a stronger connection, thermal stress is easily generated during the welding process, causing deformation of the contact surface and affecting the smoothness. In addition, welding requires professional equipment and technology, and the operation is relatively complicated. The screw connection method can provide a certain connection strength, but the screws are easy to loosen, which may cause poor contact after long-term use. Moreover, the screw connection requires the processing of threaded holes on the bottom surface of the contact, which increases the problem of production costs.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a crimping die and method for connecting a wire harness to a contact, comprising a workbench, a replacement mechanism is provided on the surface of the workbench, a copper sleeve is provided on the surface of the replacement mechanism, a wire harness is connected to the inner surface of the copper sleeve, a cable is fixedly connected to the outer surface of the wire harness, a heat shrink tube is provided on the outer surface of the cable, a terminal is fixedly connected to one end surface of the cable, a clamping mechanism is provided on the upper surface of the workbench, and a clamping mechanism is provided on the lower surface of the workbench;

[0006] The replacement mechanism includes a block sliding groove, a fixed column, a movable groove, a movable block, a telescopic column, a block, a spring, a sliding groove, a sliding block, a connecting block and a mold. The inner surface of the workbench is provided with a block sliding groove, the inner surface of the block sliding groove is fixedly connected to the fixed column, the inner surface of the fixed column is provided with a movable groove, the inner surface of the movable groove is slidably connected to the movable block, one end surface of the movable block is fixedly connected to the telescopic column, one end surface of the telescopic column is fixedly connected to the block, one side surface of the block is fixedly connected to the spring, the inner surface of the block sliding groove is provided with a sliding groove, the inner surface of the sliding groove is slidably connected to the sliding block, the upper surface of the sliding block is fixedly connected to the connecting block, and one side surface of the connecting block is fixedly connected to the mold.

[0007] Preferably, the fixing columns are provided in multiple groups, and the inner dimension of the stopper sliding groove matches the outer dimension of the stopper.

[0008] Preferably, the inner dimension of the movable groove matches the outer dimension of the movable block, and one end of the spring is fixedly connected to the stopper sliding groove.

[0009] Preferably, the stopper forms a telescopic structure with the stopper sliding groove through a telescopic column and a spring, and the inner dimension of the sliding groove matches the outer dimension of the sliding block.

[0010] Preferably, the clamping mechanism includes a motor, a threaded rod, a connecting plate, a clamping block, a movable plate, a limit plate, a fixed block, a movable plate slot and a limit plate slot, the upper surface of the workbench is fixedly connected to the motor, one end surface of the motor is fixedly connected to the threaded rod, the outer surface of the threaded rod is threadedly connected to the connecting plate, one side surface of the connecting plate is fixedly connected to the clamping block, one side surface of the connecting plate is fixedly connected to the movable plate, one side surface of the movable plate is fixedly connected to the limit plate, the outer surface of the limit plate is slidably connected to the fixed block, the inner surface of the fixed block is provided with a movable plate slot, and the inner surface of the movable plate slot is provided with a limit plate slot.

[0011] Preferably, the connecting plate forms a sliding structure with the motor via a threaded rod, and two groups of clamping blocks are provided.

[0012] Preferably, the movable plates are symmetrically arranged in two groups about the central axis of the connecting plate, and the outer dimensions of the movable plates match the inner dimensions of the movable plate grooves; the limiting plates are symmetrically arranged in two groups about the central axis of the movable plates, and the outer dimensions of the limiting plates match the inner dimensions of the limiting plate grooves.

[0013] Preferably, the crimping mechanism includes a fixed plate, a cylinder, a pushing rod, a crimping plate, a contact placement groove, a limit rod groove and a limit rod. The lower surface of the workbench is fixedly connected to the fixed plate, the upper surface of the fixed plate is fixedly connected to the cylinder, the inner surface of the cylinder is slidably connected to the pushing rod, one end surface of the pushing rod is fixedly connected to the crimping plate, the inner surface of the crimping plate is provided with a contact placement groove, the inner surface of the crimping plate is provided with a limit rod groove, and the inner surface of the limit rod groove is slidably connected to the limit rod.

[0014] Preferably, two groups of limiting rods are symmetrically arranged about the central axis of the crimping plate, and the outer dimensions of the limiting rods match the inner dimensions of the limiting rod grooves.

[0015] A method for using a crimping die for connecting a wire harness to a contact comprises the following steps:

[0016] Step 1: Prepare the wire harness to be crimped, ensure that the cables on the outside are intact, and that the wiring terminals fixed at one end of the cables are of qualified quality and firmly connected;

[0017] Step 2: Select a copper sleeve of appropriate size, tidy up the ends of the wire harness, remove the insulation layer, expose the wire, and then pass the wire harness through the copper sleeve to make the wire harness fit tightly against the copper sleeve;

[0018] Step 3: Confirm that the size of the mold to be installed is compatible with the equipment, push the block, align the connecting block with the block sliding groove, align the sliding block under the connecting block with the sliding groove, and then slowly push the connecting block along the block sliding groove. At the same time, the sliding block slides into the sliding groove. When the mold is completely in the installation position, slowly release the pressure on the block. The block is reset under the elastic force of the spring, thereby jamming the connecting block and completing the positioning and fixing of the mold;

[0019] Step 4: Place the assembled wire harness and copper sleeve in the middle of the mold, start the motor, and move the two sets of clamping blocks toward the mold synchronously. When the clamping blocks approach the mold and touch the wire harness and copper sleeve, they continue to move until sufficient clamping force is applied to them to firmly fix the wire harness and copper sleeve in the mold.

[0020] Step 5: Place the contact in the contact placement groove on the inner surface of the crimping plate, and align the hole of the contact with the end of the wire harness;

[0021] Step 6: Start the cylinder, and the crimping plate will move synchronously toward the clamped wire harness and copper sleeve to complete the crimping;

[0022] Step 7: After the crimping is completed, control the motor to reverse and move the connecting plate in the opposite direction, driving the clamping block to loosen the wire harness and copper sleeve, and take out the crimped wire harness and contact.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: the crimping mold and method for connecting the wiring harness and the contact, through the setting of the replacement mechanism, the clamping mechanism and the crimping mechanism, when in use, under the normal state, the spring is in a naturally stretched state, and when the mold needs to be installed, the block is pushed, and after the block is subjected to force, the telescopic column moves in the moving groove in the fixed column, and at the same time compresses the spring, and the fixed column provides stable guidance and support for the movement of the moving block, ensuring that the block can be smoothly retracted into the block sliding groove, making room for the installation of the connecting block, and then the connecting block is installed along the block sliding groove, the sliding block under the connecting block is aligned with the sliding groove and slides into it, and when the connecting block drives the mold to completely enter the installation position, the block is released, and the block is reset under the elastic force of the spring, The connection block and the mold are now positioned and fixed, and the mold will not be easily displaced during the subsequent work process, which ensures the stability and accuracy of the mold during use, and realizes the fast, convenient and stable installation and positioning of the mold, making the mold replacement operation simple and efficient, and can adapt to the installation requirements of molds of different specifications, improving the versatility and flexibility of the equipment. At the same time, the stable mold installation structure also helps to improve the accuracy and quality of crimping. The inner wall of the mold is precisely processed to ensure a smooth surface to ensure uniform deformation of the contacts during crimping, significantly improving the smoothness of the contact surface, greatly reducing contact resistance, improving conductivity, and ensuring stable operation of the circuit. When it is necessary to clamp the wiring harness and the copper sleeve, start the motor above the workbench, and the motor starts When the connecting plate moves, the clamping block fixedly connected to the mold will also move synchronously. When the clamping block approaches the mold, it will gradually contact and apply clamping force to the mold. The two clamping blocks clamp the mold from different directions, so that the wire harness and copper sleeve placed in the middle of the mold are compressed. The moving plate and the limit plate connected to the other side of the connecting plate will slide in the moving plate groove and the limit plate groove during the movement of the connecting plate, thereby limiting the connecting plate, so that the connecting plate will not deviate or rotate when moving, ensuring that the clamping block can accurately align with the mold and evenly apply clamping force. The speed and direction of rotation can realize the precise adjustment of the clamping force of the clamping block. The flexible clamping force adjustment method enables the clamping mechanism to adapt to the clamping needs of wire harnesses and copper sleeves of different specifications, materials and processing requirements, thereby improving the versatility and adaptability of the equipment. When crimping operation is required, first place the contact in the contact placement slot, and then start the cylinder. The cylinder pushes the push rod, and one end of the push rod is fixedly connected to the crimping plate. Therefore, the movement of the push rod drives the crimping plate to move synchronously, and the crimping plate moves toward the direction of the wire harness and the copper sleeve. When the crimping plate moves, the limit rod slides in the limit rod slot to limit the moving direction and range of the crimping plate, ensuring that the crimping plate can only perform crimping actions along a predetermined straight line trajectory, thereby ensuring the accuracy and stability of crimping.After the crimping is completed, the cylinder works in the reverse direction, pulling the push rod to drive the crimping plate back to the initial position. The crimping mechanism can efficiently and accurately complete the crimping task of the wire harness, copper sleeve and contact. The crimping mechanism is simple to operate and has a high degree of automation, which can improve production efficiency and reduce production costs. This crimping method belongs to non-deformation crimping, which is achieved through interference fit. During crimping, the copper sleeve is deformed and squeezed to achieve the connection between the wire harness and the contact. After the crimping is in place, the crimped wire harness and contact are taken out. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the side appearance structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of the copper sleeve and the wiring harness cooperating with each other in the present invention;

[0026] Figure 3 It is a schematic diagram of the structure of the cylinder and the push rod of the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of the sliding block and the connecting block cooperating with each other in the present invention;

[0028] Figure 5 This is a schematic diagram of the structure of the stopper sliding groove and the stopper cooperating with each other in the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of the movable groove and the movable block cooperating with each other in the present invention;

[0030] Figure 7 This is a schematic diagram of the structure of the threaded rod and the connecting plate cooperating with each other in the present invention;

[0031] Figure 8 It is a schematic diagram of the structure of the cooperation between the limit plate groove and the limit plate of the present invention.

[0032] In the figure: 1, workbench; 2, replacement mechanism; 201, stopper sliding groove; 202, fixed column; 203, moving groove; 204, moving block; 205, telescopic column; 206, stopper; 207, spring; 208, sliding groove; 209, sliding block; 210, connecting block; 211, mold; 3, copper sleeve; 4, wiring harness; 5, cable; 6, heat shrink tube; 7, terminal block; 8, clamping mechanism; 801, motor; 802, threaded rod; 803, connecting plate; 804, clamping block; 805, movable plate; 806, limiting plate; 807, fixed block; 808, movable plate slot; 809, limiting plate slot; 9, crimping mechanism; 901, fixed plate; 902, cylinder; 903, push rod; 904, crimping plate; 905, contact placement slot; 906, limiting rod slot; 907, limiting rod. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Example 1

[0035] See also Figure 1-8 The present invention provides a technical solution: a crimping die and method for connecting a wire harness to a contact, comprising a workbench 1, a replacement mechanism 2 is provided on the surface of the workbench 1, a copper sleeve 3 is provided on the surface of the replacement mechanism 2, a wire harness 4 is connected to the inner surface of the copper sleeve 3, a cable 5 is fixedly connected to the outer surface of the wire harness 4, a heat shrink tube 6 is provided on the outer surface of the cable 5, a terminal 7 is fixedly connected to one end surface of the cable 5, a clamping mechanism 8 is provided on the upper surface of the workbench 1, and a clamping mechanism 8 is provided on the lower surface of the workbench 1;

[0036] The replacement mechanism 2 includes a block sliding groove 201, a fixed column 202, a moving groove 203, a moving block 204, a telescopic column 205, a block 206, a spring 207, a sliding groove 208, a sliding block 209, a connecting block 210 and a mold 211. The inner surface of the workbench 1 is provided with a block sliding groove 201, the inner surface of the block sliding groove 201 is fixedly connected with the fixed column 202, the inner surface of the fixed column 202 is provided with a moving groove 203, the inner surface of the moving groove 203 is slidably connected with the moving block 204, one end surface of the moving block 204 is fixedly connected with the telescopic column 205, and one end surface of the telescopic column 205 is fixedly connected There is a stopper 206, one side surface of the stopper 206 is fixedly connected with a spring 207, the inner side surface of the stopper sliding groove 201 is provided with a sliding groove 208, the inner side surface of the sliding groove 208 is slidably connected with a sliding block 209, the upper surface of the sliding block 209 is fixedly connected with a connecting block 210, and one side surface of the connecting block 210 is fixedly connected with a mold 211. Through the arrangement of the stopper sliding groove 201, the fixed column 202, the movable groove 203, the movable block 204, the telescopic column 205, the stopper 206, the spring 207, the sliding groove 208, the sliding block 209, the connecting block 210 and the mold 211, when in use, in the normal state, The spring 207 is in a naturally extended state. When the mold 211 needs to be installed, the stopper 206 is pushed. After the stopper 206 is stressed, the telescopic column 205 moves in the moving groove 203 in the fixed column 202, and the spring 207 is compressed at the same time. The fixed column 202 provides a stable guide and support for the movement of the moving block 204, ensuring that the stopper 206 can be smoothly retracted into the stopper sliding groove 201, making room for the installation of the connecting block 210, and then the connecting block 210 is installed along the stopper sliding groove 201. The sliding block 209 under the connecting block 210 is aligned with the sliding groove 208 and slides into it. When the connecting block 210 drives the mold 21 After fully entering the installation position, the stopper 206 is released, and the stopper 206 is reset under the elastic force of the spring 207, so as to realize the positioning and fixing of the connecting block 210 and the mold 211. The mold 211 will not be easily displaced in the subsequent working process, thereby ensuring the stability and accuracy of the mold 211 when in use, realizing the fast, convenient and stable installation and positioning of the mold 211, making the replacement operation of the mold 211 simple and efficient, and being able to adapt to the installation requirements of molds 211 of different specifications, thereby improving the versatility and flexibility of the equipment. At the same time, the stable installation structure of the mold 211 is also helpful to improve the accuracy and quality of crimping.

[0037] Furthermore, the fixed column 202 is provided with multiple groups, and the inner dimension of the block sliding groove 201 matches the outer dimension of the block 206. Through the setting of the block sliding groove 201 and the block 206, when in use, the dimensions of the block sliding groove 201 and the block 206 match, ensuring that the block 206 slides smoothly and stably in the block sliding groove 201. When the mold 211 needs to be installed or disassembled and the block 206 is pushed, the appropriate size matching enables the block 206 to be easily extended and retracted in the block sliding groove 201 without generating excessive gaps that cause the block 206 to shake or shift.

[0038] Furthermore, the inner dimension of the movable groove 203 is consistent with the outer dimension of the movable block 204, and one end of the spring 207 is fixedly connected to the block sliding groove 201. Through the setting of the movable groove 203 and the movable block 204, when in use, the dimensions of the movable groove 203 and the movable block 204 are consistent, ensuring the movement accuracy and stability of the movable block 204 in the movable groove 203. The size matching can also reduce friction and wear during the movement process, extend the service life of the movable block 204 and the movable groove 203, and reduce the equipment maintenance cost.

[0039] Furthermore, the stopper 206 forms a telescopic structure with the stopper sliding groove 201 through the telescopic column 205 and the spring 207. The inner size of the sliding groove 208 matches the outer size of the sliding block 209. Through the arrangement of the stopper 206, the telescopic column 205, the spring 207 and the stopper sliding groove 201, when in use, the inner wall of the mold 211 is precisely processed to ensure a smooth surface to ensure uniform deformation of the contacts during crimping. When the mold 211 is installed, when the connecting block 210 and the mold 211 are pushed along the stopper sliding groove 201 and contact the stopper 206, the stopper 206 can be extended and retracted under the thrust of the connecting block 210. Column 205 contracts smoothly into block sliding groove 201 and compresses spring 207 at the same time. When mold 211 is installed in place, spring 207 releases stored energy and pushes block 206 to extend outward through telescopic column 205, thereby realizing rapid positioning and firm fixation of mold 211. During disassembly of mold 211, external force is applied to block 206 to overcome the elastic force of spring 207, so that block 206 retracts, facilitating the removal of connecting block 210 and mold 211. This telescopic structure realizes the automated operation of installation and disassembly of mold 211, greatly improves the efficiency of replacing mold 211, and reduces the complexity and time cost of manual operation.

[0040] Furthermore, the clamping mechanism 8 includes a motor 801, a threaded rod 802, a connecting plate 803, a clamping block 804, a movable plate 805, a limiting plate 806, a fixed block 807, a movable plate slot 808 and a limiting plate slot 809. The upper surface of the workbench 1 is fixedly connected to the motor 801, one end surface of the motor 801 is fixedly connected to the threaded rod 802, the outer surface of the threaded rod 802 is threadedly connected to the connecting plate 803, one side surface of the connecting plate 803 is fixedly connected to the clamping block 804, one side surface of the connecting plate 803 is fixedly connected to the movable plate 805, and one side surface of the movable plate 805 is fixedly connected to the movable plate 805. A limit plate 806 is fixedly connected, and a fixed block 807 is slidably connected to the outer surface of the limit plate 806. A movable plate groove 808 is provided on the inner surface of the fixed block 807, and a limit plate groove 809 is provided on the inner surface of the movable plate groove 808. Through the arrangement of the motor 801, the threaded rod 802, the connecting plate 803, the clamping block 804, the movable plate 805, the limit plate 806, the fixed block 807, the movable plate groove 808 and the limit plate groove 809, when in use, when it is necessary to clamp the wiring harness 4 and the copper sleeve 3, the motor 801 above the workbench 1 is started, and the motor 801 starts to run, driving the threaded rod 802, the connecting plate 803, the clamping block 804, the movable plate 805, the limit plate 806, the fixed block 807, the movable plate groove 808 and the limit plate groove 809. The rod 802 rotates together. When the threaded rod 802 rotates, according to the principle of threaded transmission, the connecting plate 803 will move linearly along the axial direction of the threaded rod 802. As the connecting plate 803 moves, the clamping block 804 fixedly connected on one side thereof also moves synchronously. When the clamping block 804 approaches the mold 211, it will gradually contact and apply a clamping force to the mold 211. The two clamping blocks 804 clamp the mold 211 from different directions, so that the wire harness 4 and the copper sleeve 3 placed in the middle of the mold 211 are pressed tightly. The moving plate 805 and the limit plate 806 connected to the other side of the connecting plate 803 are connected at the same time. During the movement of plate 803, it will slide in the moving plate groove 808 and the limiting plate groove 809, thereby limiting the connecting plate 803, so that the connecting plate 803 will not be offset or rotated during movement, ensuring that the clamping block 804 can be accurately aligned with the mold 211 and evenly apply the clamping force. By controlling the speed and rotation direction of the motor 801, the clamping force of the clamping block 804 can be accurately adjusted. The flexible clamping force adjustment method enables the clamping mechanism 8 to adapt to the clamping requirements of the wiring harness 4 and the copper sleeve 3 of different specifications, materials and processing requirements, thereby improving the versatility and adaptability of the equipment.

[0041] Furthermore, the connecting plate 803 forms a sliding structure with the motor 801 through the threaded rod 802, and two groups of clamping blocks 804 are provided. Through the setting of the connecting plate 803, the threaded rod 802 and the motor 801, when in use, when the motor 801 drives the threaded rod 802 to rotate, the rotational motion can be accurately converted into the linear sliding motion of the connecting plate 803, so that the clamping mechanism 8 can achieve high-precision position control during operation.

[0042] Furthermore, the movable plate 805 is symmetrically arranged in two groups with respect to the central axis of the connecting plate 803, and the outer dimension of the movable plate 805 matches the inner dimension of the movable plate slot 808. The limiting plate 806 is symmetrically arranged in two groups with respect to the central axis of the movable plate 805, and the outer dimension of the limiting plate 806 matches the inner dimension of the limiting plate slot 809. By setting the movable plate 805, the limiting plate 806 and the limiting plate slot 809, when in use, the movable plate 805 is symmetrically arranged with respect to the central axis of the connecting plate 803. Two groups are symmetrically arranged on the central axis. During the clamping process, when the connecting plate 803 moves along the threaded rod 802, the two groups of symmetrical moving plates 805 can evenly share the forces from all directions, so that the connecting plate 803 is more stable when moving. The outer size of the limit plate 806 is consistent with the inner size of the limit plate groove 809, so that the limit plate 806 slides smoothly and accurately in the limit plate groove 809, providing a stable and reliable guiding and limiting effect for the connecting plate 803.

[0043] Furthermore, the crimping mechanism 9 includes a fixed plate 901, a cylinder 902, a push rod 903, a crimping plate 904, a contact placement groove 905, a limit rod groove 906 and a limit rod 907. The lower surface of the workbench 1 is fixedly connected to the fixed plate 901, the upper surface of the fixed plate 901 is fixedly connected to the cylinder 902, the inner surface of the cylinder 902 is slidably connected to the push rod 903, and one end surface of the push rod 903 is fixedly connected to the crimping plate 904, a contact placement groove 905 is provided on the inner surface of the crimping plate 904, a limit rod groove 906 is provided on the inner surface of the crimping plate 904, and a limit rod 907 is slidably connected to the inner surface of the limit rod groove 906. By setting the fixing plate 901, the cylinder 902, the push rod 903, the crimping plate 904, the contact placement groove 905, the limit rod groove 906 and the limit rod 907, when in use, when a crimping operation is required, first place the contact The head is placed in the contact placement groove 905, and then the cylinder 902 is started. The cylinder 902 pushes the push rod 903. One end of the push rod 903 is fixedly connected to the crimping plate 904. Therefore, the movement of the push rod 903 drives the crimping plate 904 to move synchronously, and the crimping plate 904 moves toward the direction of the wiring harness 4 and the copper sleeve 3. When the crimping plate 904 moves, the limit rod 907 slides in the limit rod groove 906, which limits the moving direction and range of the crimping plate 904, ensuring that the crimping plate 904 can only perform crimping action along a predetermined straight line trajectory, thereby ensuring the accuracy and stability of the crimping. After the crimping is completed, the cylinder 902 works in the reverse direction, pulling the push rod 903, and driving the crimping plate 904 back to the initial position. The crimping mechanism 9 can efficiently and accurately complete the crimping task of the wiring harness 4, the copper sleeve 3 and the contact. The crimping mechanism 9 is simple to operate and has a high degree of automation, which can improve production efficiency and reduce production costs.

[0044] Furthermore, two groups of limit rods 907 are symmetrically arranged with respect to the central axis of the crimping plate 904, and the outer dimensions of the limit rods 907 match the inner dimensions of the limit rod grooves 906. Through the arrangement of the limit rods 907, when in use, the two groups of limit rods 907 apply limiting force to the crimping plate 904 from opposite sides at the same time, so that the crimping plate 904 can always maintain a balanced state when being raised or lowered, and will not be lateral deflected or twisted due to uneven force.

[0045] Example 2

[0046] A method for using a crimping die for connecting a wire harness to a contact, using the replacement mechanism, clamping mechanism and crimping mechanism in embodiment 1, and further comprising the following steps:

[0047] Step 1: Prepare the wire harness 4 to be crimped, ensure that the cable 5 on the outside is intact, and that the terminal 7 fixedly connected at one end of the cable 5 is of qualified quality and firmly connected;

[0048] Step 2: Select a copper sleeve 3 of appropriate size, tidy up the end of the wire harness 4, remove the insulation layer, expose the wire, and then pass the wire harness 4 through the copper sleeve 3 to make the wire harness 4 fit tightly with the copper sleeve 3;

[0049] Step 3: Confirm that the size of the mold 211 to be installed is compatible with the equipment, push the stopper 206, align the connecting block 210 with the stopper sliding groove 201, align the sliding block 209 below the connecting block 210 with the sliding groove 208, and then slowly push the connecting block 210 along the stopper sliding groove 201, and at the same time, the sliding block 209 slides into the sliding groove 208. When the mold 211 is completely in the installation position, slowly release the pressure on the stopper 206, and the stopper 206 is reset under the elastic force of the spring 207, thereby clamping the connecting block 210, and completing the positioning and fixing of the mold 211;

[0050] Step 4: Place the assembled wire harness 4 and copper sleeve 3 in the middle of the mold 211, start the motor 801, and move the two sets of clamping blocks 804 toward the mold 211 synchronously. When the clamping blocks 804 approach the mold 211 and contact the wire harness 4 and copper sleeve 3, they continue to move until sufficient clamping force is applied to them, and the wire harness 4 and copper sleeve 3 are tightly fixed in the mold 211.

[0051] Step 5: Place the contact in the contact placement groove 905 on the inner surface of the crimping plate 904, and align the hole of the contact with the end of the wire harness 4;

[0052] Step 6: Start the cylinder 902, and the crimping plate 904 moves synchronously therewith, moving toward the clamped wire harness 4 and copper sleeve 3, completing the crimping;

[0053] Step 7: After the crimping is completed, the motor 801 is controlled to reverse, so that the connecting plate 803 moves in the opposite direction, driving the clamping block 804 to loosen the wire harness 4 and the copper sleeve 3, and taking out the crimped wire harness 4 and the contact.

[0054] With the above structure, the working principle of this case is: under normal conditions, the spring 207 is in a naturally extended state. When the mold 211 needs to be installed, the stopper 206 is pushed. After the stopper 206 is subjected to force, the telescopic column 205 moves in the movable groove 203 in the fixed column 202, and at the same time compresses the spring 207. The fixed column 202 provides stable guidance and support for the movement of the movable block 204, ensuring that the stopper 206 can be smoothly retracted into the stopper sliding groove 201, making room for the installation of the connecting block 210, and then the connecting block 210 is installed along the stopper sliding groove 201, and the sliding block 209 under the connecting block 210 is aligned with the sliding groove 208 and slides into it. When the connecting block 210 drives the mold 211 to fully enter the installation position, the stopper 206 is released. The stopper 206 is reset under the elastic force of the spring 207, so as to realize the positioning and fixation of the connection block 210 and the mold 211. The mold 211 will not be easily displaced in the subsequent working process, which ensures the stability and accuracy of the mold 211 when in use, and realizes the fast, convenient and stable installation and positioning of the mold 211, so that the replacement operation of the mold 211 is simple and efficient, and can adapt to the installation requirements of molds 211 of different specifications, thereby improving the versatility and flexibility of the equipment. At the same time, the stable installation structure of the mold 211 also helps to improve the accuracy and quality of the crimping. The inner wall of the mold 211 is precisely processed to ensure a smooth surface to ensure uniform deformation of the contacts during crimping, significantly improve the smoothness of the contact surface, and greatly reduce the crimping. The contact resistance is improved, and the conductive performance is improved to ensure the stable operation of the circuit. When it is necessary to clamp the wiring harness 4 and the copper sleeve 3, the motor 801 above the workbench 1 is started, and the motor 801 starts to run, driving the fixedly connected threaded rod 802 to rotate together. When the threaded rod 802 rotates, according to the principle of thread transmission, the connecting plate 803 will move linearly along the axial direction of the threaded rod 802. As the connecting plate 803 moves, the clamping block 804 fixedly connected on one side thereof also moves synchronously. When the clamping block 804 approaches the mold 211, it will gradually contact and apply a clamping force to the mold 211. The two clamping blocks 804 clamp the mold 211 from different directions, so that the wiring harness 4 and the copper sleeve 3 placed in the middle of the mold 211 are pressed tightly, and the connecting plate 803 on the other side During the movement of the connecting plate 803, the movable plate 805 and the limiting plate 806 connected to the side will slide in the movable plate groove 808 and the limiting plate groove 809, thereby limiting the connecting plate 803, so that the connecting plate 803 will not deviate or rotate during movement, ensuring that the clamping block 804 can accurately align with the mold 211 and evenly apply the clamping force. By controlling the speed and rotation direction of the motor 801, the clamping force of the clamping block 804 can be accurately adjusted. The flexible clamping force adjustment method enables the clamping mechanism 8 to adapt to the clamping requirements of the wire harness 4 and the copper sleeve 3 of different specifications, materials and processing requirements, thereby improving the versatility and adaptability of the equipment. When crimping operation is required, the contact is first placed in the contact placement groove 905,Then start the cylinder 902, and the cylinder 902 pushes the push rod 903. One end of the push rod 903 is fixedly connected to the crimping plate 904. Therefore, the movement of the push rod 903 drives the crimping plate 904 to move synchronously, and the crimping plate 904 moves toward the wire harness 4 and the copper sleeve 3. When the crimping plate 904 moves, the limit rod 907 slides in the limit rod groove 906, which limits the moving direction and range of the crimping plate 904, ensuring that the crimping plate 904 can only perform crimping action along a predetermined straight line trajectory, thereby ensuring the accuracy and stability of the crimping. After the crimping is completed, the cylinder 902 works in the reverse direction to pull the push rod 903, drives the crimping plate 904 back to the initial position, and the crimping mechanism 9 can efficiently and accurately complete the crimping task of the wire harness 4, the copper sleeve 3 and the contact. The crimping mechanism 9 is simple to operate and has a high degree of automation, which can improve production efficiency and reduce production costs. This crimping method belongs to non-deformation crimping, which is achieved through interference fit. During crimping, the copper sleeve 3 is deformed and squeezed to achieve the connection between the wire harness 4 and the contact. After the crimping is in place, the crimped wire harness 4 and the contact are taken out. The model of the motor 801 is YE2-132S-4, and the model of the cylinder 902 is CP96SDB63-200C.

[0055] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A crimping die and method for connecting a wire harness to a contact, comprising a workbench (1), characterized in that: The surface of the workbench (1) is provided with a replacement mechanism (2), the surface of the replacement mechanism (2) is provided with a copper sleeve (3), the inner surface of the copper sleeve (3) is connected to a wiring harness (4), the outer surface of the wiring harness (4) is fixedly connected to a cable (5), the outer surface of the cable (5) is sleeved with a heat shrink tube (6), one end surface of the cable (5) is fixedly connected to a terminal (7), the upper surface of the workbench (1) is provided with a clamping mechanism (8), and the lower surface of the workbench (1) is provided with a clamping mechanism (8); The replacement mechanism (2) comprises a block sliding groove (201), a fixed column (202), a movable groove (203), a movable block (204), a telescopic column (205), a block (206), a spring (207), a sliding groove (208), a sliding block (209), a connecting block (210) and a mold (211); the inner surface of the workbench (1) is provided with a block sliding groove (201); the inner surface of the block sliding groove (201) is fixedly connected to the fixed column (202); the inner surface of the fixed column (202) is provided with a movable groove (203); the inner surface of the movable groove (203) is slidable A moving block (204) is connected, one end surface of the moving block (204) is fixedly connected to a telescopic column (205), one end surface of the telescopic column (205) is fixedly connected to a stopper (206), one side surface of the stopper (206) is fixedly connected to a spring (207), the inner side surface of the stopper sliding groove (201) is provided with a sliding groove (208), the inner side surface of the sliding groove (208) is slidably connected to a sliding block (209), the upper surface of the sliding block (209) is fixedly connected to a connecting block (210), and one side surface of the connecting block (210) is fixedly connected to a mold (211).

2. A crimping die and method for connecting a wire harness to a contact according to claim 1, characterized in that: The fixing columns (202) are provided in multiple groups, and the inner dimensions of the stopper sliding groove (201) match the outer dimensions of the stopper (206).

3. A crimping die and method for connecting a wire harness to a contact according to claim 1, characterized in that: The inner dimension of the movable groove (203) matches the outer dimension of the movable block (204), and one end of the spring (207) is fixedly connected to the stopper sliding groove (201).

4. A crimping die and method for connecting a wire harness to a contact according to claim 1, characterized in that: The stopper (206) forms a telescopic structure with the stopper sliding groove (201) via a telescopic column (205) and a spring (207), and the inner dimension of the sliding groove (208) matches the outer dimension of the sliding block (209).

5. A crimping die and method for connecting a wire harness to a contact according to claim 1, characterized in that: The clamping mechanism (8) comprises a motor (801), a threaded rod (802), a connecting plate (803), a clamping block (804), a movable plate (805), a limiting plate (806), a fixed block (807), a movable plate slot (808) and a limiting plate slot (809); the upper surface of the workbench (1) is fixedly connected to the motor (801); one end surface of the motor (801) is fixedly connected to the threaded rod (802); the outer surface of the threaded rod (802) is threadedly connected to the connecting plate (803); ), a clamping block (804) is fixedly connected to one side surface of the connecting plate (803), a movable plate (805) is fixedly connected to one side surface of the connecting plate (803), a limiting plate (806) is fixedly connected to one side surface of the movable plate (805), a fixed block (807) is slidably connected to the outer surface of the limiting plate (806), a movable plate groove (808) is provided on the inner surface of the fixed block (807), and a limiting plate groove (809) is provided on the inner surface of the movable plate groove (808).

6. A crimping die and method for connecting a wire harness to a contact according to claim 5, characterized in that: The connecting plate (803) forms a sliding structure with the motor (801) via the threaded rod (802), and two groups of clamping blocks (804) are provided.

7. A crimping die and method for connecting a wire harness to a contact according to claim 5, characterized in that: The movable plates (805) are symmetrically arranged in two groups with respect to the central axis of the connecting plate (803), and the outer dimensions of the movable plates (805) match the inner dimensions of the movable plate slot (808). The limiting plates (806) are symmetrically arranged in two groups with respect to the central axis of the movable plate (805), and the outer dimensions of the limiting plates (806) match the inner dimensions of the limiting plate slot (809).

8. A crimping die and method for connecting a wire harness to a contact according to claim 1, characterized in that: The crimping mechanism (9) comprises a fixed plate (901), a cylinder (902), a push rod (903), a crimping plate (904), a contact placement groove (905), a limit rod groove (906) and a limit rod (907); the lower surface of the workbench (1) is fixedly connected to the fixed plate (901); the upper surface of the fixed plate (901) is fixedly connected to the cylinder (902); the inner surface of the cylinder (902) is slidably connected to the push rod (903); one end surface of the push rod (903) is fixedly connected to the crimping plate (904); the inner surface of the crimping plate (904) is provided with a contact placement groove (905); the inner surface of the crimping plate (904) is provided with a limit rod groove (906); the inner surface of the limit rod groove (906) is slidably connected to the limit rod (907).

9. A crimping die and method for connecting a wire harness to a contact according to claim 8, characterized in that: Two groups of limiting rods (907) are symmetrically arranged with respect to the central axis of the crimping plate (904), and the outer dimensions of the limiting rods (907) match the inner dimensions of the limiting rod grooves (906).

10. A method for using a crimping die for connecting a wire harness to a contact, characterized in that: The crimping die for connecting a wire harness and a contact according to any one of claims 1 to 9 further comprises the following steps: Step 1: Prepare the wire harness (4) to be crimped, ensure that the cable (5) outside is intact, and that the wiring terminal (7) fixedly connected to one end of the cable (5) is of qualified quality and firmly connected; Step 2: Select a copper sleeve (3) of suitable size, tidy up the end of the wire harness (4), remove the insulation layer to expose the wire, and then pass the wire harness (4) through the copper sleeve (3) to make the wire harness (4) fit tightly with the copper sleeve (3); Step 3: Confirm that the size of the mold (211) to be installed is compatible with the equipment, push the stopper (206), align the connecting block (210) with the stopper sliding groove (201), align the sliding block (209) below the connecting block (210) with the sliding groove (208), and then slowly push the connecting block (210) along the stopper sliding groove (201), and at the same time, the sliding block (209) slides into the sliding groove (208). When the mold (211) is completely in the installation position, slowly release the pressure on the stopper (206), and the stopper (206) is reset under the elastic force of the spring (207), thereby clamping the connecting block (210), and completing the positioning and fixing of the mold (211); Step 4: placing the assembled wire harness (4) and copper sleeve (3) in the middle of the mold (211), starting the motor (801), and moving the two sets of clamping blocks (804) toward the mold (211) synchronously. When the clamping blocks (804) approach the mold (211) and contact the wire harness (4) and the copper sleeve (3), they continue to move until sufficient clamping force is applied to them, so that the wire harness (4) and the copper sleeve (3) are tightly fixed in the mold (211); Step 5: Place the contact in the contact placement groove (905) on the inner surface of the crimping plate (904), and align the hole of the contact with the end of the wire harness (4); Step 6: Start the cylinder (902), and the crimping plate (904) moves synchronously therewith, moving toward the clamped wire harness (4) and copper sleeve (3), completing the crimping; Step 7: After the crimping is completed, the motor (801) is controlled to rotate in reverse, so that the connecting plate (803) moves in the opposite direction, driving the clamping block (804) to release the wire harness (4) and the copper sleeve (3), and taking out the crimped wire harness (4) and the contact.

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