An automatic crimping unit for terminal blocks based on intelligent motor manufacturing

Abstract

The present invention relates to a new type of automatic crimping unit for terminal blocks based on intelligent manufacturing of motors. The specifications of the terminals and lead cables used by motors of the same specification are basically completely consistent, so the modular terminal blocks and modular lead cables can be pre-installed and used directly during assembly. Therefore, the present invention is suitable for the crimping of most motor terminal blocks, and can achieve a high degree of automation in the terminal crimping process in motor assembly, thereby reducing installation and transportation time, greatly improving efficiency, and saving costs. The present invention can achieve rapid crimping of motor terminal blocks, greatly saving time in the installation process of the junction box, and improving production efficiency. In the intelligent manufacturing and assembly process of the motor, compared with the traditional terminal crimping, the use of the present invention will significantly improve the degree of automation of motor assembly. The assembly time is shortened by 50%, and the efficiency is improved by more than 30%.

Description

Technical Field

[0001] The invention relates to a novel crimping device for a motor terminal and a lead-in cable, and belongs to the field of motor intelligent manufacturing. Background Art

[0002] In the intelligent manufacturing and installation process of motors, the core pressing, stator assembly, bearing assembly and other processes already have corresponding automatic or semi-automatic equipment to assist in the installation, such as loading and unloading manipulators, CNC bearing end cover press machines, etc. Although robots or special equipment have been added to some installation links, the installation efficiency and speed have not been significantly improved. After research, it was found that due to various factors such as structural position, the crimping of terminal blocks and lead cables has not been automated due to the lack of matching automation equipment and is now completed manually, which directly affects the speed and efficiency of the installation. The motor assembly process is as follows: Figure 1 shown.

[0003] After the winding core is welded with the lead wires and the stator core with windings is pressed into the base, it is necessary to manually insert the terminal at the end of each lead wire, and then use a special motor terminal crimping tool, replace it with a crimping die that matches the wire diameter, and crimp them separately. Figure 1 As shown, the conventional crimping of lead cables and terminal blocks is completed during the process of installing the junction box. The installation is done manually using a motor terminal crimping tool. The process is as follows Figure 2 As shown. The motor terminal crimping tool is a tool for crimping the lead cable and the terminal together to connect them. It is generally composed of a crimping die, a ratchet or a hydraulic device. Existing motor terminal crimping tools are divided into two categories: manual and automatic crimping tools according to the different driving methods. The manual crimping tool is composed of steel jaws and ratchets with good mechanical properties. The mechanical properties of the ratchets are used to complete the crimping. It is suitable for low current occasions of materials such as PVC and polycarbonate. Depending on its specifications and models, it can also be used for crimping copper tube terminals. Automatic crimping tools are divided into two driving modes: hydraulic and pneumatic. With the help of a pressure block, terminals of different specifications can be crimped. At present, there are 6 lead cables for the motor. Based on the current situation in the motor industry, the traditional method is used to complete the crimping of a motor terminal. It requires more than 6 repetitions of the crimping work, which takes a long time to install and has low work efficiency.

[0004] At present, terminal blocks are crimped using manual or automatic tools. Automatic crimping refers to the driving method of the equipment, and the process itself has not been automated. For example, the insertion and crimping of terminal blocks, as well as the transfer of finished lead cables are all done manually. The uncertainty of manual labor can lead to the terminal not being pressed tightly or leaking, resulting in rework and waste of materials. The consistency of the product is difficult to ensure, and the indispensable labor will also lead to a certain degree of cost increase. Summary of the invention

[0005] The purpose of the invention is to realize the fully automatic crimping of the motor terminal and the lead-in cable.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the present invention is to provide an automatic crimping unit for terminal blocks based on intelligent manufacturing of motors, characterized in that before the winding core is pressed into the casing and before the lead-in cable is welded to the winding core, the automatic crimping unit for terminal blocks is used to complete the fully automatic crimping of the motor terminal blocks and the lead-in cable, and the automatic crimping unit for terminal blocks includes an automatic crimping device, which drives the crimping die to open and close, and after the crimping die is closed, the modular terminal blocks composed of N terminal blocks are simultaneously crimped on the modular lead-in cables composed of N lead-in cables to form modular finished lead-out wires; modular semi-finished lead-out wire conveyor belts and modular terminal blocks are respectively provided on the front and rear sides of the crimping die. The sub-conveyor belt, the modular semi-finished product lead-out wire conveyor belt and the modular terminal conveyor belt are respectively provided with positioning plates, the modular terminal blocks and the modular lead-in cables are respectively fixed on the positioning plates on the modular semi-finished product lead-out wire conveyor belt and the modular terminal conveyor belt, the modular semi-finished product lead-out wire conveyor belt and the modular terminal conveyor belt respectively convey the modular lead-in cables and the modular terminal blocks to the position where the opened crimping mold is located, after being conveyed to the position, the modular lead-in cables are inserted into the modular terminal blocks; the finished product lead-out wire conveyor belt is connected to the modular semi-finished product lead-out wire conveyor belt, the modular semi-finished product lead-out wire conveyor belt conveys the crimped modular finished product lead-out wire to the finished product lead-out wire conveyor belt, and the finished product lead-out wire conveyor belt is used to realize the discharge.

[0007] Preferably, a conveyor belt positioning device is provided at a position of the modular semi-finished product lead-out conveyor belt close to the automatic crimping device and at a position of the modular terminal conveyor belt close to the automatic crimping device, respectively, and the conveyor belt positioning device comprises an air pressure positioning module located at the left and right sides of the modular semi-finished product lead-out conveyor belt or the modular terminal conveyor belt and positioning convex strips located at the front and rear sides of the crimping die;

[0008] After the positioning plate is conveyed to the position of the pneumatic positioning module by the modular semi-finished product lead-out line conveyor belt or the modular terminal block conveyor belt, the left and right side edges of the positioning plate are respectively clamped by the pneumatic positioning module on the same side, thereby positioning the position of the positioning plate; a trapezoidal groove is provided in the middle of the left and right side edges of the positioning plate, and the pneumatic positioning module includes a positioning cylinder, and a trapezoidal positioning block adapted to the shape of the trapezoidal groove is provided at the end of the cylinder rod of the positioning cylinder through a floating joint. After the cylinder rod is extended into place, the trapezoidal positioning block is clamped into the trapezoidal groove along the inclined wall of the trapezoidal groove. After the cylinder rod is retracted into place, the trapezoidal positioning block is disengaged from the trapezoidal groove, thereby releasing the positioning of the positioning plate;

[0009] The bottom surface of the positioning plate is provided with a through groove that cooperates with the positioning convex strip. When the positioning plate is conveyed into place by the modular semi-finished product lead-out wire conveyor belt or the modular terminal conveyor belt, the positioning convex strip is inserted into the through groove, thereby positioning the left and right positions of the positioning plate and limiting the forward and backward movement trajectory of the positioning plate.

[0010] Preferably, the crimping die comprises an upper die and a lower die, and the upper die and the lower die are respectively provided with N semicircular holes, each of which has a triangular structure. After the crimping die is closed, the two corresponding semicircular holes on the upper die and the lower die are closed into a circular hole, and at the same time, the two triangular structures in the two semicircular holes are closed into a hexagonal structure, so that the corresponding terminal is uniformly stressed on six sides during crimping through the hexagonal structure;

[0011] The automatic crimping equipment includes a frame, and the upper die and the lower die are both arranged on the frame. The two positioning convex strips are respectively located on the front and rear sides of the lower die and fixed on the frame. The upper die is located above the lower die and is fixed to the hydraulic device fixed on the frame through a floating joint. The upper die is replaced through the floating joint, and the hydraulic device drives the upper die to move up and down, thereby opening and closing the crimping die.

[0012] Preferably, a detection device is provided on the front and rear sides of the rack respectively, and the detection device is used to detect the wire diameter, color, and model information of the modular wiring terminals or the modular connecting cables located on the same side to determine whether the modular wiring terminals match the modular connecting cables.

[0013] Preferably, a lower mold fixing plate is provided on the frame, a sliding groove is opened on the lower mold fixing plate, and the bottom of the lower mold is embedded in the sliding groove; a hydraulic push rod mechanism is provided on the frame, and the left and right positions of the lower mold on the sliding groove are limited by the hydraulic push rod mechanism, so that the semicircular hole of the lower mold is always aligned with the semicircular hole of the upper mold.

[0014] Preferably, the top of the floating joint is fixed to the hydraulic device, and a protruding trapezoidal structure is provided at the bottom of the floating joint; a trapezoidal groove is provided at the top of the upper die, and the trapezoidal structure is embedded in the trapezoidal groove to connect the upper die to the floating joint.

[0015] Preferably, the positioning plate on the modular semi-finished product lead-out line conveyor belt is provided with a lead-in cable fixture for clamping the modular lead-in cable, and the lead-in cable fixture comprises N lead-in cable fixture structures and a fixture base plate; a positioning notch is respectively provided at the front edge and the rear edge of the fixture base plate, and the positioning plate on the modular semi-finished product lead-out line conveyor belt is provided with a positioning block corresponding to the positioning notch, and after the fixture base plate is fixed on the positioning plate, the positioning block is inserted into the positioning notch; each lead-in cable fixture structure comprises a fixed base fixed on the fixture base plate and an annular chuck located at the top of the fixed base, the top of the annular chuck is an inverted V-shaped structure opening, the lead-in cable is inserted into the annular chuck through the inverted V-shaped structure opening, and the inner wall of the annular chuck is evenly distributed with a plurality of anti-slip rubbers along the circumferential direction.

[0016] Preferably, the top inner side and the bottom of the inverted V-shaped structure opening and the transition connection with the main body of the annular clamp form rounded structures respectively.

[0017] Preferably, the positioning plate on the modular terminal conveyor belt is provided with a terminal fixture for clamping the modular terminal; the terminal fixture comprises N terminal fixture structures and a fixture bottom plate 2; a positioning notch 2 is respectively provided on the front edge and the rear edge of the fixture bottom plate 2, and the positioning plate on the modular terminal conveyor belt is provided with a positioning block 2 corresponding to the positioning notch 2. After the fixture bottom plate 2 is fixed on the positioning plate, the positioning block 2 is snapped into the positioning notch 2; each terminal fixture structure The invention comprises a frame structure with a side opening, wherein the wiring terminal is clamped in a corresponding wiring terminal fixture structure via the opening, the frame structure is fixed on a second bottom plate of the fixture, a spring and an end top plate are arranged in the frame structure, the two ends of the spring are respectively against the second bottom plate of the fixture and the end top plate, and the wiring terminal is clamped between the end top plate and the top plate of the frame structure by utilizing the elastic lifting force of the spring; the ends of the end top plate and the top plate of the frame structure are inclined surfaces, and a guide flare is formed by the two inclined surfaces for guiding the wiring terminal to the gap between the end top plate and the top plate.

[0018] Preferably, a positioning protrusion structure is respectively provided on the left and right sides of the end top plate; vertical grooves extending along the height direction of the frame structure are respectively provided on the inner walls on the left and right sides of the frame structure, and the positioning protrusion structure is inserted into the vertical groove on the same side to limit the upward and downward movement trajectory of the end top plate.

[0019] The specifications of the terminals and lead cables used in motors of the same specification are basically completely consistent, so the modular terminal blocks and modular lead cables can be pre-installed and used directly when assembled. Therefore, the present invention is suitable for crimping of most motor terminal blocks, and can realize a high degree of automation of the crimping process of terminal blocks in motor assembly, thereby reducing installation and transportation time, greatly improving efficiency, and saving costs.

[0020] The present invention can realize the rapid crimping of the motor terminal, greatly save time in the installation process of the junction box, and improve production efficiency. In the intelligent manufacturing and assembly process of the motor, compared with the traditional crimping of the terminal, the adoption of the present invention can significantly improve the automation of the motor assembly. The assembly time is shortened by 50% and the efficiency is improved by more than 30%. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Assemble processes for existing motors;

[0022] Figure 2 It is the traditional crimping process for connecting cables and terminals;

[0023] Figure 3 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 4 It is a schematic diagram of the system composition of the present invention;

[0025] Figures 5 to 10 It is a schematic diagram of the action process of the present invention;

[0026] Fig.11 This is a schematic diagram of the cable connection fixture structure;

[0027] Fig.12 It is a structural schematic diagram of the annular chuck;

[0028] Fig.13 It is a structural schematic diagram of a fixture bottom plate;

[0029] Fig.14 It is a structural diagram of automatic crimping equipment;

[0030] Fig.15 It is a schematic diagram of the positioning convex strip structure;

[0031] Fig.16 and Fig.17 It is a schematic diagram of the floating joint structure;

[0032] Fig.18 It is a schematic diagram of the structure of the detection equipment;

[0033] Fig.19 and Fig. 20 Schematic diagram of the crimping die structure

[0034] Fig.21 and Fig. 22 It is a schematic diagram of the hydraulic push rod mechanism;

[0035] Figure 23 to Figure 27 It is a schematic diagram of the structure of the terminal fixture;

[0036] Fig.28 For the improved motor assembly process;

[0037] Fig.29 For the improved junction box assembly process;

[0038] Figure 30 to Figure 32 This is a schematic diagram of the structure of the air pressure positioning module. DETAILED DESCRIPTION

[0039] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the appended claims of the application equally.

[0040] like Figure 3 As shown, a new type of automatic crimping unit for terminal blocks based on intelligent manufacturing of motors provided by the present invention includes a finished lead-out wire conveyor belt 1, a modular semi-finished lead-out wire conveyor belt 2, a positioning plate 3, a modular lead-in cable 4, a conveyor belt positioning device 5, a detection device 6, an automatic crimping device 7, a crimping mold 8, a hydraulic push rod mechanism 9, a modular terminal block 10 and a modular terminal block conveyor belt 11.

[0041] Combination Figure 4 The above-mentioned automatic crimping unit for terminal blocks is controlled by the matching semi-finished product / finished product conveying system, automatic crimping system, and detection system in conjunction with PLC to realize functions such as automatic loading, automatic crimping, automatic discharging, and data uploading of motor lead cables and terminal blocks.

[0042] The conveyor belt positioning device 5 enables the positioning plate 3 to smoothly and without error deliver the modular lead cable 4 and the modular terminal block 10 to the designated position, thereby ensuring the position accuracy of the conveying process. Figure 1 , 5 , 6, 13, 15, the conveyor belt positioning device 5 includes an air pressure positioning module 5-1 located on the left and right sides of the modular semi-finished product lead-out conveyor belt 2 and the modular terminal conveyor belt 11, and a positioning convex strip 5-2 located on the front and rear sides of the crimping mold 8.

[0043] After the positioning plate 3 is conveyed to the location of the pneumatic positioning module 5-1 by the modular semi-finished product lead-out conveyor belt 2 or the modular terminal conveyor belt 11, the front left and right edges of the positioning plate 3 are respectively inserted into the positioning plate 3, thereby positioning the left and right positions and the upper and lower positions of the positioning plate 3, and limiting the forward and backward movement trajectory of the positioning plate 3. A trapezoidal groove 5-3 is provided in the middle of the left and right edges of the positioning plate 3, and the pneumatic positioning module 5-1 includes a positioning cylinder 5-1-2, and the end of the cylinder rod 5-1-3 of the positioning cylinder 5-1-2 is equipped with a corresponding trapezoidal positioning block 5-1-5, and the trapezoidal positioning block 5-1-5 is connected to the cylinder rod 5-1-3 by a floating joint 5-1-4 (standard part). When the positioning plate 3 is conveyed to the designated position by the modular semi-finished product lead-out conveyor belt 2 or the modular terminal conveyor belt 11 (the position is controlled by the distance sensor 5-1-1 of the pneumatic positioning module), the positioning cylinder 5-1-2 is inflated, and the air pressure drives the cylinder rod 5-1-3 to extend, so that the trapezoidal positioning block 5-1-5 connected with the floating joint 5-1-4 is inserted into the trapezoidal groove 5-3 along the inclined wall of the trapezoidal groove 5-3, and the front and rear positions of the positioning plate 3 are positioned. After the terminal crimping is completed, the pneumatic positioning module 5-1 receives the completion signal, the other air chamber of the positioning cylinder 5-1-2 is inflated, the cylinder rod 5-1-3 is retracted, and the conveyor belt continues to flow.

[0044] The bottom surface of the positioning plate 3 is provided with a through groove 5-4 that matches the positioning convex strip 5-2. When the positioning plate 3 is delivered to the position by the modular semi-finished product lead-out conveyor belt 2 or the modular terminal conveyor belt 11, the positioning convex strip 5-2 is inserted into the through groove 5-4, thereby positioning the left and right positions of the positioning plate 3 and limiting the forward and backward movement trajectory of the positioning plate 3.

[0045] Combination Fig.14 , 16 , 17, 19, 20, 21, 22, the crimping die 8 used in the present invention is specially designed into a six-hole side-by-side structure after investigating the manufacturing characteristics of the traditional process of the motor, and is divided into an upper die 8-1 and a lower die 8-2. Because most of the lead wires for the motor are six, six semicircular holes are respectively provided on the upper die 8-1 and the lower die 8-2, and each semicircular hole has a triangular structure. The one-time crimping molding of the six-hole die has better production efficiency than the crimping die with a single hole design in the past. After the crimping die 8 is closed, the two corresponding semicircular holes on the upper die 8-1 and the lower die 8-2 are closed into a circular hole, and at the same time, the two triangular structures in the two semicircular holes are closed into a hexagonal structure. Through the hexagonal structure, the six sides of the terminal can be evenly stressed during crimping, making the crimping more secure and not easy to fall off.

[0046] The automatic crimping device 7 in the present invention includes a frame 7-1, a detection device 6 and a hydraulic device 7-2, and the crimping is controlled by a PLC and a sensor. The detection device 6 and the PLC can control the size of the pressure according to the wire diameter, model, terminal specifications, etc., and the automatic crimping device 7 can greatly improve the efficiency of motor assembly and the product qualification rate. The hydraulic device 7-2 is fixed on the frame 7-1, and the upper mold 8-1 is connected to the hydraulic device 7-2 through the floating joint 8-3. The hydraulic device 7-2 drives the upper mold 8-1 to move up and down, so that the crimping mold 8 is opened and closed. The upper part of the floating joint 8-3 is connected to the hydraulic device 7-2 by a thread, and the lower part uses a protruding trapezoidal structure 8-3-1 to match the trapezoidal groove 8-3-2 of the upper mold 8-1 to form an interlocking. The floating joint 8-3 and the trapezoidal groove 8-3-2 are both rectangular structures, which can make the force applied by the hydraulic device 7-2 evenly distributed on the crimping mold 8, so that the crimped product has good product consistency. At the same time, the convex and concave trapezoidal interlocking structure and threaded connection also make mold replacement simpler and more convenient.

[0047] The lower die 8-2 is located below the upper die 8-1, and the positioning ridges 5-2 mentioned above are respectively located on the front and rear sides of the lower die 8-2 and fixed on the frame 7-1. A lower die fixing plate 7-3 is fixed on the frame 7-1, and a sliding groove is opened on the lower die fixing plate 7-3, and the bottom of the lower die 8-2 is embedded in the sliding groove. The lower die fixing plate 7-3 has six evenly distributed screw holes, and can be connected to the frame 7-1 by screws to achieve the function of fixed connection between the mold and the crimping equipment body. A hydraulic push rod mechanism 9 is also fixed on the frame 7-1. The lower die 8-2 is not constrained from its left and right displacement on the lower die fixing plate 7-3. The lower die 8-2 can cooperate with the sliding groove on the lower die fixing plate 7-3 to slide left and right. The hydraulic push rod mechanism 9 makes the lower die 8-2 and the upper die 8-1 correctly positioned to ensure that the terminal can be crimped normally. The hydraulic push rod mechanism 9 consists of a hydraulic rod and its end top plate. The extension and contraction of the hydraulic rod are controlled by PLC, and both are detachable. Due to the reliability of the hydraulic mechanism, the lower die 8-2 will not have any displacement change after being supported by the top plate, which plays a great role in the normal crimping of the terminal. The lower die 8-2 has a structural design connected to the lower die fixing plate 7-3 on both sides, which is convenient for loading and unloading the lower die 8-2.

[0048] The present invention is a cable fixture specially designed for the automatic crimping unit of the terminal block, which can make the cable connection work better in the automatic crimping unit. Fig.11 , 1213. A cable connection fixture provided by the present invention includes six cable connection fixture structures 12-1 and a fixture bottom plate 12-2. A positioning notch 12-3 is respectively provided on the front side edge and the rear side edge of the fixture bottom plate 12-2, and a positioning block 1 corresponding to the positioning notch 12-3 is provided on the positioning plate 3 on the modular semi-finished lead-out wire conveyor belt 2. After the fixture bottom plate 12-2 is fixed on the positioning plate 3, the positioning block 1 is inserted into the positioning notch 12-3. The fixture bottom plate 12-2 and the positioning plate 3 can be smoothly fixed by the positioning notch 12-3.

[0049] Each cable connection fixture structure 12-1 includes a fixed base 12-1-1 fixed on the fixture bottom plate 12-2 and an annular clamp 12-1-2 located at the top of the fixed base 12-1-1. The top of the annular clamp 12-1-2 is an inverted V-shaped structure opening with an angle of 24°, and the inverted V-shaped structure opening has metal resilience. The inverted V-shaped structure opening is easy to open and close, and the connection cable can be directly pressed into the annular clamp 12-1-2 from the top through the inverted V-shaped structure opening for fixing. The transition connection between the top inner side and the bottom of the inverted V-shaped structure opening and the main part of the annular clamp 12-1-2 forms a chamfered structure with a radius of R2, respectively, to avoid the inner side of the clamp scratching the outer insulation layer of the cable when the cable is pressed in, resulting in leakage and other dangers. There are 7 anti-skid rubbers 12-1-3 with a diameter of 2MM divided equally at 45 degrees inside the annular clamp 12-1-2, which can prevent the cable from axially moving after being pressed into the annular clamp 12-1-2, causing quality problems during the crimping process.

[0050] Combination Figure 23 to Figure 26 The terminal fixture used in the present invention includes six terminal fixture structures 13-1 and a fixture bottom plate 13-2. A positioning notch 13-3 is provided at the front edge and the rear edge of the fixture bottom plate 13-2, respectively. The positioning plate 3 on the modular terminal conveyor belt 11 is provided with a positioning block 13 corresponding to the positioning notch 13-3. After the fixture bottom plate 13-2 is fixed on the positioning plate 3, the positioning block 13 is inserted into the positioning notch 13-3.

[0051] Each terminal fixture structure 13-1 includes a frame structure 13-1-1 with a side opening, and the terminal is clamped in the corresponding terminal fixture structure 13-1 through the opening. The frame structure 13-1-1 is fixed on the fixture bottom plate 13-2. A spring 13-1-2 and an end top plate 13-1-3 are provided in the frame structure 13-1-1. The two ends of the spring 13-1-2 are respectively against the fixture bottom plate 13-2 and the end top plate 13-1-3. The terminal is clamped between the end top plate 13-1-3 and the top plate of the frame structure 13-1-1 by the elastic lifting force of the spring 13-1-2. The ends of the end top plate 13-1-3 and the top plate of the frame structure 13-1-1 are 15° inclined surfaces, and a guide expansion is formed by the two inclined surfaces to guide the terminal to the gap between the end top plate 13-1-3 and the top plate, so that the front end of the terminal can be smoothly inserted.

[0052] A positioning protrusion structure 13-1-4 is provided on the left and right sides of the end top plate 13-1-3 respectively; vertical grooves extending along the height direction of the frame structure 13-1-1 are provided on the inner walls on the left and right sides of the frame structure 13-1-1 respectively, and the positioning protrusion structure 13-1-4 is inserted into the vertical groove on the same side to limit the upward and downward movement trajectory of the end top plate 13-1-3 to prevent the end top plate 13-1-3 from being displaced by the up and down movement.

[0053] The front part of the terminal can be inserted into the gap between the end top plate 13-1-3 and the top plate of the frame structure 13-1-1, and then the end top plate 13-1-3 is elastically lifted by the spring 13-1-2 to press and fix the terminal up and down. The terminal fixture can be used to fix most motor terminals and has a significant effect on improving the assembly efficiency of the junction box.

[0054] Combination Figures 5 to 10 The operation steps of the automatic crimping unit provided by the present invention are as follows:

[0055] First, the modular lead cable 4 and the modular terminal block 10 are respectively fed to the designated position from the modular semi-finished lead wire conveyor belt 2 and the modular terminal block conveyor belt 11. Subsequently, the detection device 6 (e.g., a visual detection system) of the automatic crimping device 7 detects the wire diameter, color, model and other information. After matching, the automatic crimping device 7 starts to crimp. After crimping, the finished lead cable is output via the finished lead wire conveyor belt 1, and the background PLC system automatically uploads the data to the workshop information management system, which specifically includes the following steps:

[0056] Step 1: The modular semi-finished product lead-out wire conveyor belt 2 and the modular terminal conveyor belt 11 respectively convey the modular lead-in cable 4 and the modular terminal 10 to the designated positions, and the positioning device 5 positions them.

[0057] Step 2: The detection device 6 detects the wire diameter, color, model and other information of the cable and terminal.

[0058] Step 3: After the inspection is correct, the crimping die 8 is closed and the automatic crimping device 7 performs the crimping work.

[0059] Step 4: After crimping is completed, the crimping die 8 is opened, and the finished lead-in cable is conveyed to the next process by the finished lead-out wire conveyor belt 1.

[0060] In addition to proposing the above-mentioned new type of automatic crimping unit for terminal blocks based on intelligent motor manufacturing, the present invention also changes the traditional motor assembly process. Fig.28 and Fig.29 As shown, before the winding core is pressed into the casing and the lead-in cable has not yet been welded to the winding core, the six semi-finished lead-in cables of a fixed length are placed in the lead-in cable fixture on the positioning plate 3 to modularize them, forming a modular lead-in cable 4. Then, in conjunction with the modular terminal 10 that has been placed in the terminal fixture, the modular semi-finished lead-out wire conveyor belt 2 and the modular terminal conveyor belt 11 are respectively sent to the front and rear sides of the automatic crimping device 7. After the sensor senses that the modular lead-in cable 4 and the modular terminal 10 have arrived at the specified position, the PLC controls the automatic crimping device 7 to complete the terminal crimping with the corresponding pressure. Before crimping, the detection device (6) detects that if the wire diameter and model do not match, crimping will not be performed, and if they match, crimping will be performed. After crimping is completed, the finished lead wire is sent to the next process via the finished lead wire conveyor belt 1.

Claims

1. An automatic crimping unit for terminal blocks based on intelligent motor manufacturing. It is characterized in that Before the winding core is pressed into the housing and before the lead-in cable is welded to the winding core, the automatic crimping unit for connecting terminals is used to complete the fully automatic crimping of the motor connecting terminals and the lead-in cable. The automatic crimping unit for connecting terminals comprises an automatic crimping device (7). The automatic crimping device (7) drives a crimping die (8) to open and close. After the crimping die (8) is closed, a modular connecting terminal (4) composed of a plurality of connecting terminals is simultaneously crimped onto a modular lead-in cable (10) composed of N lead-in cables to form a modular finished lead-out line. A modular semi-finished lead-out line conveyor belt (2) and a modular connecting terminal conveyor belt (11) are respectively provided on the front and rear sides of the crimping die (8). Positioning plates are respectively provided on the modular semi-finished lead-out line conveyor belt (2) and the modular connecting terminal conveyor belt (11). (3), the modular terminal block (4) and the modular lead-in cable (10) are respectively fixed on the positioning plate (3) on the modular semi-finished product lead-out conveyor belt (2) and the modular terminal block conveyor belt (11), and the modular semi-finished product lead-out conveyor belt (2) and the modular terminal block conveyor belt (11) respectively convey the modular lead-in cable (10) and the modular terminal block (4) to the position where the opened crimping mold (8) is located. After being conveyed to the position, the modular lead-in cable (10) is inserted into the modular terminal block (4); the finished product lead-out conveyor belt (1) is connected to the modular semi-finished product lead-out conveyor belt (2), and the modular semi-finished product lead-out conveyor belt (2) conveys the crimped modular finished product lead-out to the finished product lead-out conveyor belt (1), and the finished product lead-out conveyor belt (1) realizes the discharge; A conveyor belt positioning device (5) is provided at a position of the modular semi-finished product lead-out conveyor belt (2) close to the automatic crimping device (7) and at a position of the modular terminal conveyor belt (11) close to the automatic crimping device (7), respectively. The conveyor belt positioning device (5) comprises an air pressure positioning module (5-1) located on the left and right sides of the modular semi-finished product lead-out conveyor belt (2) or the modular terminal conveyor belt (11) and positioning convex strips (5-2) located on the front and rear sides of the crimping die (8); After the positioning plate (3) is conveyed to the position of the pneumatic positioning module (5-1) by the modular semi-finished product lead-out line conveyor belt (2) or the modular terminal block conveyor belt (11), the left and right side edges of the positioning plate (3) are respectively clamped by the pneumatic positioning module (5-1) on the same side, thereby positioning the position of the positioning plate (3); a trapezoidal groove (5-3) is provided in the middle of the left and right side edges of the positioning plate (3), and the pneumatic positioning module (5-1) includes a positioning cylinder (5-1-2) which is connected to the ladder A trapezoidal positioning block (5-1-5) whose shape is adapted to the trapezoidal groove (5-3) is arranged at the end of the cylinder rod (5-1-3) of the positioning cylinder (5-1-2) through a floating joint (5-1-4); after the cylinder rod (5-1-3) is extended to a position, the trapezoidal positioning block (5-1-5) is inserted into the trapezoidal groove (5-3) along the inclined wall of the trapezoidal groove (5-3); after the cylinder rod (5-1-3) is retracted to a position, the trapezoidal positioning block (5-1-5) is disengaged from the trapezoidal groove (5-3), thereby releasing the positioning of the positioning plate (3); The bottom surface of the positioning plate (3) is provided with a through groove (5-4) that matches the positioning convex strip (5-2); when the positioning plate (3) is transported to a position by the modular semi-finished product lead-out wire conveyor belt (2) or the modular terminal block conveyor belt (11), the positioning convex strip (5-2) is inserted into the through groove (5-4), thereby positioning the left and right positions of the positioning plate (3) and limiting the forward and backward movement trajectory of the positioning plate (3).

2. The automatic crimping unit for connecting terminals based on intelligent manufacturing of motors as claimed in claim 1, It is characterized in that The crimping die (8) comprises an upper die (8-1) and a lower die (8-2), wherein a plurality of semicircular holes are respectively arranged on the upper die (8-1) and the lower die (8-2), and each semicircular hole has a triangular structure. When the crimping die (8) is closed, two corresponding semicircular holes on the upper die (8-1) and the lower die (8-2) are closed into a circular hole, and at the same time, two triangular structures in the two semicircular holes are closed into a hexagonal structure, so that the corresponding wiring terminal is uniformly stressed on six sides during crimping. The automatic crimping device (7) comprises a frame (7-1), an upper die (8-1) and a lower die (8-2) are both arranged on the frame (7-1), two positioning convex strips (5-2) are respectively located on the front and rear sides of the lower die (8-2) and fixed on the frame (7-1), the upper die (8-1) is located above the lower die (8-2) and is fixed to a hydraulic device (7-2) fixed on the frame (7-1) through a second floating joint (8-3), the upper die (8-1) is replaced through the second floating joint (8-3), and the upper die (8-1) is driven by the hydraulic device (7-2) to move up and down, thereby opening and closing the crimping die (8).

3. The automatic crimping unit for connecting terminals based on intelligent manufacturing of motors as claimed in claim 2, It is characterized in that A detection device (6) is provided on the front and rear sides of the rack (7-1), respectively, and the detection device (6) is used to detect the wire diameter, color, and model information of the modular wiring terminal (4) or the modular lead cable (10) located on the same side, so as to determine whether the modular wiring terminal (4) and the modular lead cable (10) match.

4. The automatic crimping unit for connecting terminals based on intelligent manufacturing of motors as claimed in claim 2, It is characterized in that The frame (7-1) is provided with a lower die fixing plate (7-3), the lower die fixing plate (7-3) is provided with a sliding groove, and the bottom of the lower die (8-2) is embedded in the sliding groove; a hydraulic push rod mechanism (9) is provided on the frame (7-1), and the hydraulic push rod mechanism (9) limits the left and right positions of the lower die (8-2) on the sliding groove, so that the semicircular hole of the lower die (8-2) and the semicircular hole of the upper die (8-1) are always aligned.

5. The automatic crimping unit for connecting terminals based on intelligent manufacturing of motors as claimed in claim 4, It is characterized in that The top of the second floating joint (8-3) is fixed to the hydraulic device (7-2), and the bottom of the second floating joint (8-3) is provided with a protruding trapezoidal structure (8-3-1); the top of the upper mold (8-1) is provided with a second trapezoidal groove (8-3-2), and the trapezoidal structure (8-3-1) is embedded in the second trapezoidal groove (8-3-2) so as to connect the upper mold (8-1) to the second floating joint (8-3).

6. The automatic crimping unit for connecting terminals based on intelligent manufacturing of motors as claimed in claim 1, It is characterized in that The positioning plate (3) on the modular semi-finished lead-out line conveyor belt (2) is provided with a lead-out cable fixture for clamping the modular lead-out cable (10), and the lead-out cable fixture comprises a plurality of lead-out cable fixture structures (12-1) and a fixture bottom plate (12-2); a positioning notch (12-3) is respectively provided on the front edge and the rear edge of the fixture bottom plate (12-2), and the positioning plate (3) on the modular semi-finished lead-out line conveyor belt (2) is provided with a positioning block (1) corresponding to the positioning notch (12-3), and the fixture bottom plate (12-2) is fixed After being placed on the positioning plate (3), the positioning block is inserted into the positioning slot (12-3); each cable connection fixture structure (12-1) comprises a fixed base (12-1-1) fixed on the fixture bottom plate (12-2) and an annular clamp (12-1-2) located at the top of the fixed base (12-1-1); the top of the annular clamp (12-1-2) is an inverted V-shaped structural opening; the connection cable is inserted into the annular clamp (12-1-2) through the inverted V-shaped structural opening; and the inner wall of the annular clamp (12-1-2) is evenly distributed with a plurality of anti-slip rubbers (12-1-3) along the circumferential direction.

7. The automatic crimping unit for connecting terminals based on intelligent manufacturing of motors as claimed in claim 6, It is characterized in that The transition connection between the inner side of the top and the bottom of the inverted V-shaped structure opening and the main body of the annular clamp (12-1-2) forms a rounded corner structure respectively.

8. The automatic crimping unit for connecting terminals based on intelligent manufacturing of motors as claimed in claim 1, It is characterized in that The positioning plate (3) on the modular terminal conveyor belt (11) is provided with a terminal fixture for clamping the modular terminal (4); the terminal fixture comprises a plurality of terminal fixture structures (13-1) and a fixture bottom plate (13-2); a second positioning notch (13-3) is respectively provided on the front edge and the rear edge of the fixture bottom plate (13-2); the positioning plate (3) on the modular terminal conveyor belt (11) is provided with a second positioning block corresponding to the second positioning notch (13-3); after the fixture bottom plate (13-2) is fixed on the positioning plate (3), the second positioning block is clamped into the second positioning notch (13-3); each terminal fixture structure (13-1) comprises a frame structure (13-1-1) with a side opening, and the terminal is connected to the frame structure (13-1-1) via the opening. The mouth clamp is installed in the corresponding terminal fixture structure (13-1), the frame structure (13-1-1) is fixed on the fixture bottom plate 2 (13-2), a spring (13-1-2) and an end top plate (13-1-3) are arranged in the frame structure (13-1-1), the two ends of the spring (13-1-2) are respectively against the fixture bottom plate 2 (13-2) and the end top plate (13-1-3), and the terminal clamp is installed between the end top plate (13-1-3) and the top plate of the frame structure (13-1-1) by utilizing the elastic lifting force of the spring (13-1-2); the ends of the end top plate (13-1-3) and the top plate of the frame structure (13-1-1) are inclined surfaces, and a guide flare for guiding the terminal to the gap between the end top plate (13-1-3) and the top plate is formed by the two inclined surfaces.

9. The automatic crimping unit for connecting terminals based on intelligent manufacturing of motors as claimed in claim 8, It is characterized in that A positioning protrusion structure (13-1-4) is respectively provided on the left and right sides of the end top plate (13-1-3); vertical grooves extending along the height direction of the frame structure (13-1-1) are respectively provided on the inner walls on the left and right sides of the frame structure (13-1-1); the positioning protrusion structure (13-1-4) is inserted into the vertical groove on the same side to limit the upward and downward movement trajectory of the end top plate (13-1-3).

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