Full-automatic welding equipment for miniature terminal for automobile

Abstract

The utility model relates to full-automatic welding equipment for a miniature terminal for an automobile, which comprises a discharging mechanism, and a welding control mechanism, a contact shaping and force measuring mechanism and an automatic cutting mechanism which are erected on a rack, a material belt output from the discharging mechanism sequentially penetrates through the welding control mechanism, the contact shaping and force measuring mechanism and the automatic cutting-off mechanism, and the welding control mechanism comprises a material belt clamping, transferring and positioning mechanism for clamping, transferring and positioning the terminal material belt and a silver point feeding mechanism for automatically feeding silver points in a vibration disc mode. The upper electrode assembly and the lower electrode assembly are used for conducting silver spot welding on the terminals, the contact shaping force measuring mechanism is used for conducting shaping machining and welding fastness detection on the welded contacts, and the automatic cutting-off mechanism is used for cutting welded terminal material belts into spare parts one by one; the automatic welding device can achieve efficient welding, welding points are accurate, linkage is good, clamping is reliable, the structure is stable, operation is easy, running is stable, and precision is high.

Description

[Technical field]

[0001] The utility model relates to the technical field of automobile parts, in particular to a fully automatic welding device for automobile micro terminals. [Background Technology]

[0002] This terminal is used in the control units of various toggle and press signal output components in the car. This type of control unit has strict requirements on micro terminals and needs to be tested for various performances (resistance, wear resistance, impact resistance, mechanical strength, salt spray resistance, etc.) in different environments:

[0003] 1. Low temperature -40°C, high temperature 75° / 85° / 95° / 120° working environment;

[0004] 2. Normal temperature: 23±5℃, air pressure: 86-106kPa, humidity: 45%-75% working environment.

[0005] This terminal consists of a terminal body and a round silver contact. The terminal body is 0.7mm thick, the silver contact is φ2.4mm, and the thickness is 0.4mm (if attached Figure 12-1 and attached Figure 12-2 ). Welding strength ≥ 200N, the surface is smooth after welding, no discoloration, no deformation, and no burrs. In addition to high conductivity, this terminal also requires high hardness. This terminal is an important connector and requires a certain degree of rigidity. It is an interference fit assembly with the injection molded housing and needs to be pressed into assembly with rated pressure. The pull-out force after pressing in is > 100N. This terminal is made of copper alloy and has excellent conductivity, which is 25% of red copper. The conductivity of conventional bronze material is 12% of red copper. For resistance welding, the better the conductivity, the more difficult the resistance welding is, and this terminal requires a very high welding strength, so the production of this product faces many difficulties.

[0006] The demand for this terminal is huge, with 20 million pieces needed each year. It is used inside a certain control unit of an automobile. The unit is assembled automatically at high speed, so the consistency of the performance and size of the terminal is very high.

[0007] The traditional welding method is manual welding, and the first choice is to use a stamping die to punch the terminal into individual parts. Then the terminal and the contact are manually welded, and finally the terminal contact is manually shaped. This production method occupies a large area, requires a lot of equipment and personnel, is inefficient, and the quality is difficult to guarantee. It cannot meet the needs of large-scale production.

[0008] In order to improve welding efficiency, after continuous research and development, it was decided to eliminate the backward manual production method. If an automatic production equipment can be provided, it will not only greatly improve production efficiency and quality, but also have the functions of small space occupation, simple operation, and timely feedback of production status, which will be of great significance. [Contents of the utility model]

[0009] The utility model aims to provide a fully automatic welding device for automotive micro terminals with high welding efficiency, precise welding points, good linkage, reliable clamping and stable structure, so as to solve the problems raised in the above-mentioned background technology.

[0010] In order to achieve the above purpose, a fully automatic welding device for automotive micro terminals is designed, including a discharge mechanism 1 and a welding control mechanism 3, a contact shaping force measuring mechanism 4, and an automatic cutting mechanism 5 mounted on a frame 2. The discharge mechanism 1 is used to automatically output the terminal in the form of a material strip, and the material strip 6 output from the discharge mechanism 1 passes through the welding control mechanism 3, the contact shaping force measuring mechanism 4 and the automatic cutting mechanism 5 in sequence. The output end of the discharge mechanism 1 is connected to the welding control mechanism 3, and the welding control mechanism 3 includes a material strip clamping, transferring and positioning mechanism, a silver point feeding mechanism and an upper and lower The electrode assembly, the material strip clamping, transferring and positioning mechanism is used to clamp, transfer and position the terminal material strip, the silver dot feeding mechanism is used to automatically feed the silver dots in the form of a vibrating disk, the upper and lower electrode assemblies are used to weld the terminals and the silver dots, the output end of the welding control mechanism 3 is connected to the contact shaping force measuring mechanism 4, the contact shaping force measuring mechanism 4 is used to shape the contacts after welding and detect the welding strength, the output end of the contact shaping force measuring mechanism 4 is connected to the automatic cutting mechanism 5, the automatic cutting mechanism 5 is used to cut the welded terminal material strips into loose parts one by one.

[0011] Furthermore, the material belt clamping, transferring and positioning mechanism includes a material belt clamping component 101, a material belt transfer component 102 and a material belt positioning component 103, the material belt 6 is placed on the material belt transfer component 102, the material belt transfer component 102 is installed on the clamping and transferring base 104, the material belt transfer component 102 includes a transfer cylinder 105, the material belt 6 is transferred under the drive of the transfer cylinder 105, and a magnetic sensor 106 is installed on the transfer cylinder 105, and the magnetic sensor 106 is used to detect the transfer distance of the material belt 6 to determine whether the material belt 6 is twisted and deformed; the material belt clamping component 101 is arranged above the material belt 6, and the material belt clamping component 101 includes a clamping cylinder 107, and the clamping cylinder 107 is used to press the material belt 6 The material strip positioning assembly 103 includes a material strip guide plate 108, a material pressure plate 109, a positioning plate 110 and a positioning cylinder 111. An inductive sensor 112 is installed on the right side of the material strip guide plate 108. The inductive sensor 112 is used to detect whether there is a material strip. A positioning needle 113 is installed on the positioning plate 110. The positioning needle 113 is used to be inserted into the positioning hole of the material strip 6 to accurately position the material strip 6 during welding. The positioning plate 110 is connected to the piston end of the positioning cylinder 111 through the cylinder connecting plate 114. A magnetic sensor 115 is installed on the positioning cylinder 111. The magnetic sensor 115 is used to detect the transfer distance of the material strip 6 to determine the accuracy of positioning. The magnetic sensor 115 is electrically connected to the positioning cylinder 111.

[0012] Furthermore, the positioning plate 110 is connected to the cylinder connecting plate 114 by an adjusting nut 116, and the adjusting nut 116 is used to fine-tune the lateral position size of the material strip relative to the silver point. A positioning and transfer frame 117 is connected below the material strip guide plate 108, and the positioning and transfer frame 117 is connected to the fixed base 118 by two guide strips 119. An adjusting bolt 120 is installed at the bottom of the positioning and transfer frame 117, and the longitudinal position size of the material strip relative to the silver point is fine-tuned by adjusting the bolt 120.

[0013] Furthermore, the silver dot feeding mechanism includes a vibration plate 201, a direct vibration component 202, a silver pushing component 203 and an optical fiber sensor 204. The output end of the vibration plate 201 is connected to the silver pushing component 203 through the direct vibration component 202. The silver pushing component 203 includes a silver pushing block 205 and a pen-shaped cylinder 206. The silver pushing block 205 is connected to the silver pushing block base 208 through a precision linear guide rail 207. The vibration plate 201 transports the silver dots in the direct vibration component 202 to the silver pushing groove 209 of the silver pushing block 205. The optical fiber sensor 204 is arranged below the silver pushing groove 209. The optical fiber sensor 204 is used to detect Whether the silver dot is in place and exists, the optical fiber sensor 204 is electrically connected to the pen-shaped cylinder 206, the piston end of the pen-shaped cylinder 206 is connected to the silver pushing block 205, and drives the silver pushing block 205 to move forward and backward, a limit block 210 is set at the rear end of one side of the silver pushing block 205, and the front and rear sides of the limit block 210 are respectively provided with a front limit 211 and a rear limit 212. When the limit block 210 hits the front limit 211, the silver dot slides into the silver dot positioning hole 213 on the lower electrode 311, and a magnetic sensor 214 is installed on the other side of the pen-shaped cylinder 206. The magnetic sensor 214 is used to detect whether the silver dot is stuck during the pushing process.

[0014] Furthermore, the upper and lower electrode assemblies include an upper electrode component 314 and a lower electrode component 315, wherein the upper electrode component 314 includes an upper electrode fixing seat 301, a welding upper cylinder 302, a precision pressure regulating valve 303, a pressure sensor 304, an upper electrode cantilever 305 and an upper electrode 306, wherein the upper electrode fixing seat 301 is provided with a welding upper cylinder 302, a precision pressure regulating valve 303 and a pressure sensor 304 are provided on one side of the welding upper cylinder 302, the piston output end of the welding upper cylinder 302 is connected to the upper electrode cantilever 305, and the upper electrode 306 is provided on the other end of the upper electrode cantilever 305; the lower electrode component 315 includes a welding lower Cylinder 307, lower electrode fixing seat 308, lower electrode connecting block 309, precision guide rail 310 and lower electrode 311, the welding lower cylinder 307 is installed on the lower electrode fixing seat 308, the piston output end of the welding lower cylinder 307 is connected to the lower electrode 311 through the lower electrode connecting block 309, and the lower electrode connecting block 309 is connected to the lower electrode fixing seat 308 through the precision guide rail 310; the lower electrode 311 rises upward under the drive of the welding lower cylinder 307, the upper plane of the lower electrode 311 is close to the lower plane of the terminal, and the upper electrode 306 is pressed downward to the upper plane of the material strip under the drive of the welding upper cylinder 302, and discharges to complete the welding.

[0015] Furthermore, the discharging mechanism 1 includes a discharging machine 401, a discharging tray 402, a paper tape recovery tray 403, a torque motor 404 and a tape sensor 405. The output end of the discharging machine 401 is connected to the discharging tray 402, and a terminal tape is wound on the discharging tray 402. A torque motor 404 is installed on one side of the discharging machine 401. A paper tape recovery tray 403 is installed at the output end of the torque motor 404. The paper tape recovery tray 403 is used to recover the tape protective paper. The terminal tape output from the discharging tray 402 passes through the tape sensor 405. The tape sensor 405 is provided with an upper limit and a lower limit. The torque motor 404 and the discharging machine 401 are respectively connected to the tape sensor 405 through lines.

[0016] Furthermore, the contact shaping force measuring mechanism 4 includes a punch 501, a shaping mold 502 and a force measuring component 503. The input side of the shaping mold 502 is provided with a clamping and transferring component 504, and the clamping and transferring component 504 includes a material strip clamping component 101 and a material strip transferring component 102. The clamping and transferring component 504 clamps and transfers the terminal material strip. The output side of the shaping mold 502 is provided with a force measuring component 503. The shaping mold 502 is provided with a shaping upper punch 505 and a shaping lower punch 506 which are arranged symmetrically up and down. The terminal material strip is inserted between the shaping upper punch 505 and the shaping lower punch 506. The punch 505 shapes the contact under the pressure of the punch press 501; the force measuring assembly 503 includes a guide plate 507, a second pressure plate 508, a pressure cylinder 509, a force sensor 510 and a force measuring cylinder 511. The shaped material strip passes through the guide plate 507, the guide plate 507 is installed on the force measuring frame 512, the second pressure plate 508 is arranged above the guide plate 507, the second pressure plate 508 presses the material strip 6 under the push of the pressure cylinder 509, and the end of the force sensor 510 is connected to a force head 513. The force head 513 applies a thrust to the silver point on the terminal driven by the force measuring cylinder 511 to test the welding strength.

[0017] Furthermore, the shaping upper punch 505 and the shaping lower punch 506 are both made of tungsten steel, the punch 501 controls the closing and opening of the punch by a micro cylinder 514, and a micro switch 515 is added to the bottom of the left guide rail of the punch 501, and the micro switch 515 is used to detect the working state of the punch slider.

[0018] Furthermore, the automatic cutting mechanism 5 includes a cutting frame 601, on which a cutting mold 602 and a cutting cylinder 603 are installed. The material strip 6 enters the cutting mold 602 through the material strip clamping assembly 101 and the material strip transfer assembly 102. The cutting mold 602 is connected to the piston end of the cutting cylinder 603, and the material strip 6 is cut into loose parts under the drive of the cutting cylinder 603. A dividing mechanism 604 is arranged below the cutting mold 602. The dividing mechanism 604 is connected to the force sensor 510 through PLC. A qualified product receiving box 605 and a defective product box 606 are arranged below the dividing mechanism 604. A rotatable discharge pipe is installed at the discharge port of the dividing mechanism 604. The dividing mechanism 604 rotates the discharge pipe to the qualified product receiving box 605 or the defective product box 606 under the control of PLC. A waste outlet 607 is opened on the side of the cutting frame 601.

[0019] Compared with the prior art, the utility model has the following advantages:

[0020] (1) The welding process of the material strip and the silver dot of the utility model involves clamping, transferring, positioning and welding. The whole process is pneumatically controlled, and each mechanism is provided with a corresponding sensor. The air source, power supply and signal input module are integrated in the PLC controller to realize the regular and sequential operation of each mechanism;

[0021] (2) The pressure sensors, optical fiber sensors, inductive sensors, and magnetic sensors of each component of the utility model can monitor the status and operation of the welding process in real time, and finally display this information on the operation touch screen, so that faults and problems in operation can be discovered in time, which is convenient for operators to quickly restore and adjust the equipment;

[0022] (3) The contact shaping force measuring mechanism is used to shape the contacts after welding and test the welding strength. After shaping and extrusion, the silver dots have finer grains and denser structures, which improves the mechanical properties and surface roughness of the silver dots, and can achieve a mirror effect of Ra0.4. The product height dimensional accuracy is less than 0.03mm.

[0023] (4) After the silver point of the utility model is shaped, it enters the measurement of welding strength. The presence of silver point can be found by measuring force. When the welding strength is too low, the information is synchronized to the final cutting process to remove defective parts. This process is automatically detected by the equipment, which improves the product quality inspection, especially for mass production, and can achieve 100% detection;

[0024] (5) The automatic cutting mechanism of the utility model cuts the material strip into pieces, realizes fully automatic cutting, and automatically removes defective products. It has the characteristics of simple operation, stable operation, high precision and high efficiency;

[0025] (6) The fully automatic terminal welding equipment of the utility model achieves the effects of high-efficiency welding, precise welding points, good linkage, reliable clamping and stable structure;

[0026] (7) The utility model has a high degree of automation. It can clamp one reel of material (40,000 pieces / reel) and produce continuously for 24 hours. One employee can supervise the production of five devices at the same time, thereby improving production efficiency, reducing costs, and stabilizing product quality. It is worthy of promotion and application. [Drawings]

[0027] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0028] Figure 2 It is a structural schematic diagram of the discharging mechanism of the utility model;

[0029] Figure 3 It is a structural schematic diagram of the welding control mechanism of the utility model;

[0030] Figure 4-1 This is a schematic diagram of the structure of the material strip clamping, moving and positioning of the utility model;

[0031] Figure 4-2 yes Figure 4-1 Schematic diagram of the local structure of the middle material belt positioning;

[0032] Figure 4-3 yes Figure 4-1 A partial enlarged view of the middle A;

[0033] Figure 5 It is a structural schematic diagram of the silver point feeding mechanism of the utility model;

[0034] Figure 6-1 yes Figure 5 Schematic diagram of the structure of the middle push silver component;

[0035] Figure 6-2 yes Figure 6-1 A partial enlarged view of point B in the middle;

[0036] Figure 7 It is a structural schematic diagram of the upper and lower electrode assemblies of the utility model;

[0037] Figure 8 It is a structural schematic diagram of the contact shaping force measuring mechanism of the utility model;

[0038] Figure 9-1 yes Figure 8 Structural diagram of the shaping process;

[0039] Figure 9-2 yes Figure 9-1 A schematic diagram of the side structure of

[0040] Figure 9-3 yes Figure 9-1 A partial enlarged view of point C in the middle;

[0041] Figure 10 is Figure 8 Structural diagram of the force measuring mechanism;

[0042] Fig.11 It is a structural schematic diagram of the automatic cutting mechanism of the utility model;

[0043] Figure 12-1 It is a front structural schematic diagram of the utility model product;

[0044] Figure 12-2 It is a schematic diagram of the top view of the structure of the utility model product;

[0045] In the figure: 1, discharging mechanism 2, frame 3, welding control mechanism 4, contact shaping force measuring mechanism 5, automatic cutting mechanism 6, material belt 7, touch screen 8, precision inverter welding machine 9, silver point 101, material belt clamping assembly 102, material belt transfer assembly 103, material belt positioning assembly 104, clamping and transferring base 105, transfer cylinder 106, magnetic sensor 2 107, clamping cylinder 108, material belt guide plate 109, pressing plate 110, positioning plate 111, positioning cylinder 112, inductance sensor 113, positioning needle 114, gas Cylinder connecting plate 115, magnetic sensor 116, adjusting nut 117, positioning transfer frame 118, fixed base 119, guide bar 120, adjusting bolt 201, vibration plate 202, direct vibration assembly 203, silver pushing assembly 204, optical fiber sensor 205, silver pushing block 206, pen-shaped cylinder 207, precision linear guide 208, silver pushing block base 209, silver pushing groove 210, limit block 211, front limit 212, rear limit 213, silver point positioning hole 214, magnetic sensor 301, upper electrode fixing seat 30 2. Welding upper cylinder 303, precision pressure regulating valve 304, pressure sensor 305, upper electrode cantilever 306, upper electrode 307, welding lower cylinder 308, lower electrode fixing seat 309, lower electrode connecting block 310, precision guide rail 311, lower electrode 312, electric limit bolt 313, magnetic sensor 314, upper electrode component 315, lower electrode component 316, silver dot positioning assembly 401, discharge machine 402, discharge tray 403, paper tape recovery tray 404, torque motor 405, tape sensor 501, punch 5 02, shaping mold 503, force measuring assembly 504, clamping and transferring assembly 505, shaping upper punch 506, shaping lower punch 507, material guide plate 508, material pressing plate 2 509, material pressing cylinder 510, force sensor 511, force measuring cylinder 512, force measuring frame 513, force measuring head 514, micro cylinder 515, micro switch 513, heightening block 601, cutting frame 602, cutting mold 603, cutting cylinder 604, material dividing mechanism 605, qualified product receiving box 606, defective product box 607, waste material outlet. [Specific implementation method]

[0046] The utility model provides a fully automatic welding device for automotive micro terminals, which integrates multiple working procedures in the product production process into one device, designs a unique silver point positioning mechanism and an automatic welding mechanism; adopts a water-cooled precision inverter resistance welding machine, adds a precision pressure regulating valve and a pressure sensor, and accurately controls welding pressure parameters; improves the traditional punching machine, adds a detection sensor, improves efficiency and reduces the failure rate; adds a sensor for feedback of production status in important processes, so that workers can quickly eliminate faults through alarm information.

[0047] As attached Figure 1 As shown, the fully automatic welding equipment for automotive micro terminals is arranged from right to left according to the production and operation direction of the material strip. First, the material strip is rolled out from the unwinding machine, passes through the material strip sensor, and enters the spot welding control mechanism mounted on the frame base. After welding, the material strip passes in front of the precision inverter welding, enters the shaping force measuring mechanism, and finally enters the automatic cutting mechanism. Specifically, the fully automatic welding equipment for automotive micro terminals includes a discharge mechanism 1 and a welding control mechanism 3, a contact shaping force measuring mechanism 4, and an automatic cutting mechanism 5 mounted on the frame 2. The discharge mechanism 1 is used to automatically output the terminal in the form of a material strip. The material strip 6 output from the discharge mechanism 1 passes through the welding control mechanism 3, the contact shaping force measuring mechanism 4, and the automatic cutting mechanism 5 in sequence. The output end of the discharge mechanism 1 is connected to the welding control mechanism 3. The welding control mechanism 3 includes a material strip clamping, transferring, and positioning mechanism, a silver point feeding mechanism, and an upper and lower electric The terminal assembly, the material strip clamping, transferring and positioning mechanism is used to clamp, transfer and position the terminal material strip, the silver dot feeding mechanism is used to automatically feed the silver dots in the form of a vibrating disk, the upper and lower electrode assemblies are used to weld the terminals and the silver dots, the output end of the welding control mechanism 3 is connected to the contact shaping force measuring mechanism 4, the contact shaping force measuring mechanism 4 is used to shape the contacts after welding and detect the welding strength, the output end of the contact shaping force measuring mechanism 4 is connected to the automatic cutting mechanism 5, the automatic cutting mechanism 5 is used to cut the welded terminal material strips into loose parts one by one.

[0048] As attached Figure 2As shown, the unloading process is composed of an unloading machine and a tape sensor. The upper part of the unloading machine is an unloading tray, and the left side is a paper tape recovery tray, which is used to recover the tape protection roll paper. The automatic unloading of the tape is controlled by the unloading sensor. Specifically, the unloading mechanism 1 includes an unloading machine 401, an unloading tray 402, a paper tape recovery tray 403, a torque motor 404 and a tape sensor 405. The output end of the unloading machine 401 is connected to the unloading tray 402, and the terminal tape is wound on the unloading tray 402. The torque motor 404 is installed on one side of the unloading machine 401. The paper tape recovery tray 403 is installed on the output end of the torque motor 404. The paper tape recovery tray 403 is used to recover the tape protection paper. The terminal tape output from the unloading tray 402 passes through the tape sensor 405. The tape sensor 405 is provided with an upper limit and a lower limit. The torque motor 404 and the unloading machine 401 are respectively connected to the tape sensor 405 through lines.

[0049] As attached Figure 3 To Attachment Figure 4-3 As shown in the figure, the fully automatic welding control mechanism is mainly composed of a vibration plate, a direct vibration component, an upper electrode component, a lower electrode component, a silver dot positioning component, a material strip positioning component and a clamping and moving component; the entire welding process of the material strip and the silver dot involves four steps: 1) clamping; 2) transfer; 3) positioning; 4) welding. The entire process is pneumatically controlled. These mechanisms are equipped with corresponding sensors, and the gas source, power supply and signal input modules are integrated into the PLC controller to realize the regular and sequential operation of each mechanism; the pressure sensors, optical fiber sensors, inductive sensors, and magnetic sensors of each component can monitor the status and operation of the welding process in real time, and finally display this information on the operation touch screen, so that faults and problems in operation can be discovered in time, which is convenient for operators to quickly restore and adjust the equipment.

[0050] Specifically, the material belt clamping, transferring and positioning mechanism includes a material belt clamping component 101, a material belt transferring component 102 and a material belt positioning component 103. The material belt 6 is placed on the material belt transferring component 102. The material belt transferring component 102 is installed on a clamping and transferring base 104. The material belt transferring component 102 includes a transfer cylinder 105. The material belt 6 is transferred under the drive of the transfer cylinder 105. A magnetic sensor 106 is installed on the transfer cylinder 105. The magnetic sensor 106 It is used to detect the transfer distance of the material belt 6 to determine whether the material belt 6 is twisted and deformed; the material belt clamping assembly 101 is arranged above the material belt 6, and the material belt clamping assembly 101 includes a clamping cylinder 107, and the clamping cylinder 107 clamps the material belt 6; the material belt positioning assembly 103 includes a material belt guide plate 108, a pressing plate 109, a positioning plate 110 and a positioning cylinder 111, and an inductive sensor 112 is installed on the right side of the material belt guide plate 108. 2 is used to detect whether there is a material strip, a positioning pin 113 is installed on the positioning plate 110, and the positioning pin 113 is used to be inserted into the positioning hole of the material strip 6 to accurately position the material strip 6 during welding, the positioning plate 110 is connected to the piston end of the positioning cylinder 111 through the cylinder connecting plate 114, and a magnetic sensor 115 is installed on the positioning cylinder 111, and the magnetic sensor 115 is used to detect the transfer distance of the material strip 6, and the magnetic sensor 115 is electrically connected to the positioning cylinder 111; the positioning plate 110 is connected to the cylinder connecting plate 114 through an adjusting nut 116, and the adjusting nut 116 is used to fine-tune the horizontal position size of the material strip relative to the silver point, and the positioning transfer frame 117 is connected to the bottom of the material strip guide plate 108, and the positioning transfer frame 117 is connected to the fixed base 118 through two guide strips 119, and the bottom of the positioning transfer frame 117 is installed with an adjusting bolt 120, and the longitudinal position size of the material strip relative to the silver point is fine-tuned by adjusting the bolt 120.

[0051] As attached Figure 5 To Attachment Figure 6-2As shown, the silver dot feeding mechanism includes a vibration plate 201, a direct vibration component 202, a silver pushing component 203 and an optical fiber sensor 204. The output end of the vibration plate 201 is connected to the silver pushing component 203 through the direct vibration component 202. The silver pushing component 203 includes a silver pushing block 205 and a pen-shaped cylinder 206. The silver pushing block 205 is connected to the silver pushing block base 208 through a precision linear guide rail 207. The vibration plate 201 transports the silver dots in the direct vibration component 202 to the silver pushing groove 209 of the silver pushing block 205. The optical fiber sensor 204 is arranged below the silver pushing groove 209. The optical fiber sensor 204 is used to detect the silver dots. Whether the dot is in place, the optical fiber sensor 204 is electrically connected to the pen-shaped cylinder 206, the piston end of the pen-shaped cylinder 206 is connected to the silver pushing block 205, and drives the silver pushing block 205 to move forward and backward, a limit block 210 is set at the rear end of one side of the silver pushing block 205, and the front and rear sides of the limit block 210 are respectively provided with a front limit 211 and a rear limit 212. When the limit block 210 hits the front limit 211, the silver dot slides into the silver dot positioning hole 213 on the lower electrode 311, and a magnetic sensor 214 is installed on the other side of the pen-shaped cylinder 206. The magnetic sensor 214 is used to detect whether the silver dot is stuck during the pushing process.

[0052] As attached Figure 7 As shown, the upper and lower electrode assemblies include an upper electrode component 314 and a lower electrode component 315. The upper electrode component 314 includes an upper electrode fixing seat 301, a welding upper cylinder 302, a precision pressure regulating valve 303, a pressure sensor 304, an upper electrode cantilever 305 and an upper electrode 306. The upper electrode fixing seat 301 is equipped with a welding upper cylinder 302, and a precision pressure regulating valve 303 and a pressure sensor 304 are installed on one side of the welding upper cylinder 302. The piston output end of the welding upper cylinder 302 is connected to the upper electrode cantilever 305, and the upper electrode 306 is installed on the other end of the upper electrode cantilever 305; the lower electrode component 315 includes a welding lower cylinder 307, lower electrode fixing seat 308, lower electrode connecting block 309, precision guide rail 310 and lower electrode 311, the welding lower cylinder 307 is installed on the lower electrode fixing seat 308, the piston output end of the welding lower cylinder 307 is connected to the lower electrode 311 through the lower electrode connecting block 309, and the lower electrode connecting block 309 is connected to the lower electrode fixing seat 308 through the precision guide rail 310; the lower electrode 311 rises upward under the drive of the welding lower cylinder 307, the upper plane of the lower electrode 311 is close to the lower plane of the terminal, and the upper electrode 306 is pressed downward to the upper plane of the material strip under the drive of the welding upper cylinder 302, and discharges to complete the welding.

[0053] As attached Figure 3 To Attachment Figure 7 As shown, the working sequence of the utility model is, when the start button is pressed:

[0054] (1) The material strip is first clamped by the clamping and transferring assembly, and then the material strip is transferred a specified distance. At this time, the terminal to be welded is aligned with the silver point position of the lower electrode to achieve preliminary positioning;

[0055] (2) The three precision pins in the material strip positioning assembly are inserted into the material strip overlap positioning holes to achieve precise positioning of the material strip;

[0056] (3) The clamping cylinder opens the material strip clamp, and the transfer cylinder returns to the initial position to clamp the material strip;

[0057] (4) The silver dots are transported to the silver block slot in the silver dot positioning assembly through the vibrating plate;

[0058] (5) The silver push block in the silver dot positioning assembly pushes the precisely positioned silver dot into the lower electrode positioning hole;

[0059] (6) The lower electrode in the lower electrode assembly rises upward, and the upper surface of the electrode is close to the lower surface of the terminal; the upper electrode is pressed down to the upper surface of the material strip, and discharge completes the welding.

[0060] As attached Figure 8 As shown in Figure 10, the fully automatic shaping and force measurement process of the utility model is mainly to shape the contacts after welding and test the welding strength. After shaping and extrusion, the silver dots have finer grains and denser structures, which improve the mechanical properties and surface roughness of the silver dots, and can achieve a mirror effect of Ra0.4, and the product height dimensional accuracy is less than 0.03mm. After shaping, the silver dots enter the welding strength measurement. The presence of silver dots can be detected by force measurement. When the welding strength is too low, the silver dots are pushed off during force measurement, and the measured data is less than the set value, an alarm message will appear, and the information will be synchronized to the final cutting process to remove defective parts; this process improves product quality inspection through automatic detection by equipment, especially for mass production, 100% detection can be achieved.

[0061] The structure is as follows: the contact shaping force measuring mechanism 4 includes a punch press 501, a shaping mold 502 and a force measuring component 503; a clamping and transferring component 504 is provided on the input side of the shaping mold 502; the clamping and transferring component 504 includes a material strip clamping component 101 and a material strip transferring component 102; the clamping and transferring component 504 clamps and transfers the terminal material strip; a force measuring component 503 is provided on the output side of the shaping mold 502; a shaping upper punch 505 and a shaping lower punch 506 symmetrically arranged up and down are provided in the shaping mold 502; the terminal material strip is passed between the shaping upper punch 505 and the shaping lower punch 506; the shaping upper punch 505 shapes the contact under the pressure of the punch press 501; the force measuring component 503 includes a material guide plate 507, a material pressing plate 508, a material pressing cylinder 509, a force measuring component 504; Sensor 510 and force measuring cylinder 511, the shaped material strip passes through the guide plate 507, the guide plate 507 is installed on the force measuring frame 512, the pressure plate 508 is arranged above the guide plate 507, the pressure plate 508 presses the material strip 6 under the push of the pressure cylinder 509, the end of the force measuring sensor 510 is connected to the force measuring head 513, the force measuring head 513 applies a thrust to the silver point on the terminal under the drive of the force measuring cylinder 511 to test the welding strength; the shaping upper punch 505 and the shaping lower punch 506 are both made of tungsten steel, and their surfaces are polished to a roughness of <Ra0.4. The punch 501 controls the closing and opening of the punch by a micro cylinder 514, and a micro switch 515 is added to the bottom of the left guide rail of the punch 501. The micro switch 515 is used to detect the working state of the punch slider.

[0062] As attached Fig.11 As shown in the figure, the main function of the fully automatic cutting mechanism for product output is to cut the material strip into pieces, realize fully automatic cutting, and automatically remove defective products. It has the characteristics of simple operation, stable operation, high precision and high efficiency. The mechanism is mainly composed of the following components: cutting frame, material dividing mechanism, cutting die, cutting cylinder, material strip clamping and transferring mechanism; among them, the brushing mechanism controls the material dividing mechanism to rotate the material discharge pipe to the direction of the defective product box after processing the alarm information of the force sensor collected by the PLC, and removes the defective products.

[0063] Specifically, the automatic cutting mechanism 5 includes a cutting frame 601, on which a cutting mold 602 and a cutting cylinder 603 are installed. The material strip 6 enters the cutting mold 602 through the material strip clamping assembly 101 and the material strip transfer assembly 102. The cutting mold 602 is connected to the piston end of the cutting cylinder 603, and the material strip 6 is cut into loose parts under the drive of the cutting cylinder 603. A dividing mechanism 604 is arranged below the cutting mold 602. The dividing mechanism 604 is connected to the force sensor 510 through PLC. A qualified product receiving box 605 and a defective product box 606 are arranged below the dividing mechanism 604. A rotatable discharge pipe is installed at the discharge port of the dividing mechanism 604. The dividing mechanism 604 rotates the discharge pipe to the qualified product receiving box 605 or the defective product box 606 under the control of PLC. A waste outlet 607 is opened on the side of the cutting frame 601.

[0064] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments:

[0065] As attached Figure 1 To Attachment Fig.11 As shown, the utility model is a fully automatic silver contact and terminal welding device. According to the running direction of the material belt, the equipment is distributed from right to left ( Figure 1 ) are, in sequence, a discharging machine, a welding control mechanism mounted on a frame, a precision inverter welding machine, a touch screen, a contact shaping force measuring mechanism, and a product output - fully automatic cutting off.

[0066] The product is fed in the form of a belt and uses a fully automatic discharging machine ( Figure 2 ), its structure includes a control cabinet, left and right material trays and sensors. The product material tray is above the control cabinet, and the material tape protection paper tape recovery tray is on the left. The discharge of the material tape is controlled by the upper and lower limit switches of the sensor. When the material tape hits the upper limit switch of the sensor, the discharge machine starts to rotate counterclockwise, and the material tape is released from the material tray. When the material tape drops to a certain distance and hits the lower limit switch of the sensor, the discharge machine is powered off, and the paper tape recovery machine automatically rotates to reel in the paper tape. The rotation speed and torque of the discharge machine can be fine-tuned according to the weight of the material tray.

[0067] Figure 3 The figure shows a schematic diagram of an automatic feeding and automatic welding device. Before welding begins, the material strip must be accurately positioned. Figure 4-1 , Figure 4-2 and Figure 4-3 As shown, this process is divided into three steps: 1) material strip clamping; 2) material strip transfer; 3) material strip positioning.

[0068] Regarding the clamping and transfer of the material belt. The order is to clamp the material belt first, and then transfer it. A pair of magnetic sensors are installed on the transfer cylinder. When the material belt is twisted or deformed, the material belt transfer will be stuck and cannot move according to the specified step distance. At this time, the equipment prompts the "transfer error" message; only with the correct transfer distance can the positioning pin be inserted into the positioning hole of the material belt.

[0069] Regarding the positioning mechanism of the material strip. It is mainly composed of the following parts: material strip guide plate, material pressure plate, positioning plate, adjustment nut, and positioning cylinder. According to the running direction of the material strip, the material strip guide plate and positioning plate are shown in the partial cross-sectional view on the far right. An inductive sensor is installed on the right side of the material strip guide plate to detect the state of the material strip. When a roll of material is produced, there is no material strip in the material strip guide plate, and the sensor prompts the "no material strip" message. The equipment stops automatically, and the worker needs to reload the material to resume production. Three precision pins are installed on the positioning plate for precise positioning of the material strip during welding ( Figure 4-2 ). The positioning plate and the cylinder connecting plate are connected by adjusting nuts. The nuts are used to fine-tune the horizontal position of the material strip relative to the silver point. A pair of magnetic sensors are installed on the positioning cylinder. When the material strip transfer distance is wrong, the positioning pin cannot be inserted into the positioning hole of the material strip. The sensor will send out a "positioning error" message, the equipment will automatically stop, and the operator will troubleshoot according to the prompts.

[0070] The mechanism is also equipped with longitudinal adjustment. The adjustment bolt at the bottom can fine-tune the longitudinal dimension of the material strip relative to the silver point. The positioning transfer frame and the fixed base are connected by two guide strips.

[0071] like Figure 5 The figure shows a schematic diagram of the silver dot feeding mechanism, which consists of the following components: a vibration plate, a direct vibration component, a silver pushing component, a fiber optic sensor, and a lower electrode.

[0072] like Figure 6-1 and Figure 6-2 The figure shows the structure of the silver dot precision push assembly. The silver push block and the silver push block base are connected by precision linear guides. The vibration plate transports the silver dots in the straight vibration to the slot of the silver push block. After the optical fiber sensor sent by the silver dot detects that the silver dot has reached the position, the pen-shaped cylinder drives the silver push block to move forward and stops when it hits the front limit. At this time, the silver dot just slides into the silver dot positioning hole on the lower electrode, and then the pen-shaped cylinder drives the silver push block back to its original position. The pen-shaped cylinder is equipped with a pair of magnetic sensors. When the silver dot is irregular in shape or the burr is too large, it will get stuck during the silver dot pushing process. At this time, the magnetic sensor outputs information prompting "silver dot stuck". During the production process, when the silver dots in the vibration plate are used up, the optical fiber sensor under the silver push slot will not detect the silver dots, and the message "no silver dots" will be prompted.

[0073] like Figure 7The diagram shows the schematic diagram of the upper and lower electrode assemblies, which are divided into the upper electrode part and the lower electrode part. The upper electrode part consists of the following parts: upper electrode fixing seat, welding upper cylinder, precision pressure regulating valve, pressure sensor, upper electrode cantilever, upper electrode. The lower electrode part consists of the following parts: welding lower cylinder, lower electrode fixing seat, lower electrode connecting block, precision guide rail, lower electrode. Since the welding material has the characteristics of low resistance and high thermal conductivity, the welding parameters are very high, which is relatively difficult for resistance welding. After repeated tests, water-cooled precision inverter welding was selected, equipped with precision pressure regulating valve and pressure sensor. The fluctuation of related parameters caused by resistance during welding is controlled to a smaller range. During welding, the lower electrode rises and fits closely to the bottom of the material belt, and then the upper electrode is pressed down to the upper material belt, and the welding work is completed after pre-pressure discharge. A pair of magnetic switches are installed on the welding lower cylinder. When the lower electrode is worn out due to long-term use, the welding material belt will be concave and deformed, and the sensor will prompt "check electrode height".

[0074] like Figure 8 This is a schematic diagram of the contact shaping and force measurement device for the material strip after welding. It is divided into three steps: 1) clamping and transferring the material strip; 2) shaping the contact; 3) force measurement detection of welding strength.

[0075] About the shaping of contacts ( Figure 9-1 , Figure 9-2 and Figure 9-3 ), the height of the product after contact welding is 1.3-1.4mm, and it is shaped to 1.1(0 / -0.03)mm according to the drawing requirements. The material itself has a certain hardness, so a 1-ton punch press is used for shaping. The upper and lower punches for shaping are made of tungsten steel, and the surface is polished to a roughness of <Ra0.4. After shaping, the product can not only obtain higher dimensional accuracy but also greatly improve the mechanical properties of the shaped parts.

[0076] Traditional punching machines control the closing and opening of the punching machine through the attraction of electromagnets. In the state of automated fast-paced production, the failure rate of electromagnets is relatively high. The main manifestations are as follows: 1) The working environment exceeds 37 degrees, and the electromagnet works continuously at a high frequency, which often causes failures, resulting in continuous and uninterrupted operation of the punching machine or delayed attraction of the electromagnet. 2) The electromagnet has large working vibrations, and frequent attraction and opening, which cause the parts to wear out excessively and fail. 3) The maintenance workload is large and maintenance is often required. In response to the above problems, the utility model adopts the following improvement measures: 1) Replace the original electromagnet with a micro cylinder (left view) Figure 9-2 ), the cylinder has a fast response speed and a buffer function at the end of the stroke. This action has low requirements for the cylinder and does not require stroke accuracy. As long as there is action, even if the cylinder causes a small amount of air leakage for a long time, it will not affect the function. The service life of a cylinder reaches 2-3 years, which greatly improves the service life. 2) Add a micro switch at the bottom of the left guide rail of the punch press (right view Figure 9-1 ), detects the working status of the punch press slider. Once it is found that the cylinder is damaged or the air pressure is insufficient, causing the punch press to not work or the punch press to malfunction, the sensor will issue a prompt message "shaping abnormality".

[0077] like Figure 10-1 and Figure 10-2 The figure shows a schematic diagram of the force measuring assembly. The material strip passes through the guide plate, and the pressing cylinder pushes the pressing plate to press the material strip tightly. Then the force measuring head of the force measuring sensor applies a set thrust to the silver point on the terminal to test the welding strength. When the measured force is 0, it means there is an unwelded empty piece. When the measured data is too small, it means that the welding strength is not enough and the silver point falls off. The information output by the sensor is "abnormal force measurement", and the information of this station will also be input into the cutting station of the product output device through the program for cutting, sorting and rejection.

[0078] like Fig.11 This is a schematic diagram of product output - fully automatic cutting. It mainly consists of a material belt clamping component, a transfer component, a cylinder cutting frame, and a material separation mechanism. The material belt passes through the clamping component and the transfer component and enters the cutting die, and is automatically cut into pieces one by one. There is a material separation mechanism under the cutting die. The defective product information detected by the force sensor of the previous process is automatically input into the control module. When the defective material belt moves to the cutting position, the material separation mechanism outlet rotates 90° and automatically slides into the defective product box on the back of the frame. Then the material discharge port of the separation mechanism automatically resets to the qualified product receiving box position.

[0079] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in the field. The standard parts used can be purchased from the market, and special-shaped parts can be customized according to the records in the specification and drawings. The specific connection methods of each part adopt mature conventional means such as bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0080] The present invention is not limited to the above-mentioned implementation modes, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention shall be considered as equivalent replacement modes and shall be included in the protection scope of the present invention.

Claims

1. A fully automatic welding equipment for automotive micro terminals, characterized by: The invention comprises a discharge mechanism (1) and a welding control mechanism (3), a contact shaping force measuring mechanism (4), and an automatic cutting mechanism (5) mounted on a frame (2); the discharge mechanism (1) is used to automatically output the terminal in the form of a material strip; the material strip (6) output from the discharge mechanism (1) passes through the welding control mechanism (3), the contact shaping force measuring mechanism (4), and the automatic cutting mechanism (5) in sequence; the output end of the discharge mechanism (1) is connected to the welding control mechanism (3); the welding control mechanism (3) comprises a material strip clamping, conveying, and positioning mechanism, a silver point feeding mechanism, and upper and lower electrode assemblies; The material strip clamping, conveying and positioning mechanism is used to clamp, convey and position the terminal material strip; the silver dot feeding mechanism is used to automatically feed the silver dots in the form of a vibrating disk; the upper and lower electrode assemblies are used to weld the terminals and the silver dots; the output end of the welding control mechanism (3) is connected to a contact shaping force measuring mechanism (4); the contact shaping force measuring mechanism (4) is used to shape the welded contacts and detect the welding strength; the output end of the contact shaping force measuring mechanism (4) is connected to an automatic cutting mechanism (5); the automatic cutting mechanism (5) is used to cut the welded terminal material strips into loose parts one by one.

2. The fully automatic welding equipment for automotive micro terminals as claimed in claim 1, characterized in that: The material belt clamping, transferring and positioning mechanism comprises a material belt clamping component (101), a material belt transferring component (102) and a material belt positioning component (103); the material belt (6) is placed on the material belt transferring component (102); the material belt transferring component (102) is installed on a clamping and transferring base (104); the material belt transferring component (102) comprises a transferring cylinder (105); the material belt (6) is moved under the drive of the transferring cylinder (105); The material strip (6) is transferred, and a second magnetic sensor (106) is installed on the transfer cylinder (105). The second magnetic sensor (106) is used to detect the transfer distance of the material strip (6) to determine whether the material strip (6) is twisted or deformed; the material strip clamping assembly (101) is arranged above the material strip (6), and the material strip clamping assembly (101) includes a clamping cylinder (107), and the clamping cylinder (107) clamps the material strip (6). The material strip positioning assembly (103) comprises a material strip guide plate (108), a material pressing plate (109), a positioning plate (110) and a positioning cylinder (111). An inductive sensor (112) is installed on the right side of the material strip guide plate (108). The inductive sensor (112) is used to detect whether the material strip is present. A positioning needle (113) is installed on the positioning plate (110). The positioning needle (113) is used to be inserted into the positioning hole of the material strip (6) to accurately position the material strip (6) during welding. The positioning plate (110) is connected to the piston end of the positioning cylinder (111) through a cylinder connecting plate (114). A magnetic sensor (115) is installed on the positioning cylinder (111). The magnetic sensor (115) is used to detect the transfer distance of the material strip (6) and judge the accuracy of positioning. The magnetic sensor (115) is electrically connected to the positioning cylinder (111).

3. The fully automatic welding equipment for automotive micro terminals as claimed in claim 2, characterized in that: The positioning plate (110) is connected to the cylinder connecting plate (114) via an adjusting nut (116), and the adjusting nut (116) is used to fine-tune the lateral position size of the material strip relative to the silver point. A positioning transfer frame (117) is connected below the material strip guide plate (108), and the positioning transfer frame (117) is connected to the fixed base (118) via two guide bars (119). An adjusting bolt (120) is installed at the bottom of the positioning transfer frame (117), and the longitudinal position size of the material strip relative to the silver point is fine-tuned by adjusting the bolt (120).

4. The fully automatic welding equipment for automotive micro terminals as claimed in claim 1, characterized in that: The silver dot feeding mechanism comprises a vibration plate (201), a direct vibration component (202), a silver pushing component (203) and an optical fiber sensor (204); the output end of the vibration plate (201) is connected to the silver pushing component (203) via the direct vibration component (202); the silver pushing component (203) comprises a silver pushing block (205) and a pen-shaped cylinder (206); the silver pushing block (205) is connected to a silver pushing block base (208) via a precision linear guide rail (207); the vibration plate (201) transports the silver dots in the direct vibration component (202) to a silver pushing groove (209) of the silver pushing block (205); the optical fiber sensor (204) is arranged below the silver pushing groove (209); and the optical fiber sensor (204) is used to detect The optical fiber sensor (204) is electrically connected to a pen-shaped cylinder (206), the piston end of the pen-shaped cylinder (206) is connected to a silver pusher (205), and drives the silver pusher (205) to move forward and backward. A limit block (210) is arranged at the rear end of one side of the silver pusher (205), and a front limit block (211) and a rear limit block (212) are arranged at the front and rear sides of the limit block (210), respectively. When the limit block (210) hits the front limit block (211), the silver dot slides into the silver dot positioning hole (213) on the lower electrode (311). A magnetic sensor (214) is installed on the other side of the pen-shaped cylinder (206), and the magnetic sensor (214) is used to detect whether the silver dot is stuck during the pushing process.

5. The fully automatic welding equipment for automotive micro terminals as claimed in claim 1, characterized in that: The upper and lower electrode assemblies include an upper electrode component (314) and a lower electrode component (315); the upper electrode component (314) includes an upper electrode fixing seat (301), a welding upper cylinder (302), a precision pressure regulating valve (303), a pressure sensor (304), an upper electrode cantilever (305) and an upper electrode (306); the upper electrode fixing seat (301) is provided with a welding upper cylinder (302); one side of the welding upper cylinder (302) is provided with a precision pressure regulating valve (303) and a pressure sensor (304); the piston output end of the welding upper cylinder (302) is connected to the upper electrode cantilever (305); the other end of the upper electrode cantilever (305) is provided with an upper electrode (306); the lower electrode component (315) includes a welding lower cylinder (301); The welding lower cylinder (307) is installed on the lower electrode fixing seat (308), the piston output end of the welding lower cylinder (307) is connected to the lower electrode (311) through the lower electrode connecting block (309), and the lower electrode connecting block (309) is connected to the lower electrode fixing seat (308) through the precision guide rail (310); the lower electrode (311) rises upward under the drive of the welding lower cylinder (307), the upper plane of the lower electrode (311) is close to the lower plane of the terminal, and the upper electrode (306) is pressed downward to the upper plane of the material strip under the drive of the welding upper cylinder (302), and discharges to complete the welding.

6. The fully automatic welding equipment for automotive micro terminals according to any one of claims 1 to 5, characterized in that: The discharging mechanism (1) comprises a discharging machine (401), a discharging tray (402), a paper tape recovery tray (403), a torque motor (404) and a tape sensor (405); the output end of the discharging machine (401) is connected to the discharging tray (402); a terminal tape is wound on the discharging tray (402); a torque motor (404) is installed on one side of the discharging machine (401); a paper tape recovery tray (403) is installed at the output end of the torque motor (404); the paper tape recovery tray (403) is used to recover tape protection paper; the terminal tape output from the discharging tray (402) passes through the tape sensor (405); the tape sensor (405) is provided with an upper limit and a lower limit; the torque motor (404) and the discharging machine (401) are respectively connected to the tape sensor (405) through lines.

7. The fully automatic welding equipment for automotive micro terminals according to any one of claims 1 to 5, characterized in that: The contact shaping force measuring mechanism (4) comprises a punch (501), a shaping die (502) and a force measuring assembly (503); a clamping and transferring assembly (504) is arranged on the input side of the shaping die (502); the clamping and transferring assembly (504) comprises a material strip clamping assembly (101) and a material strip transferring assembly (102); the clamping and transferring assembly (504) clamps and transfers the terminal material strip; a force measuring assembly (503) is arranged on the output side of the shaping die (502); an upper shaping punch (505) and a lower shaping punch (506) are arranged symmetrically in the shaping die (502); the terminal material strip is inserted between the upper shaping punch (505) and the lower shaping punch (506); the upper shaping punch (50 5) The contact is shaped under the punching of the punch press (501); the force measuring assembly (503) includes a material guide plate (507), a material pressing plate 2 (508), a material pressing cylinder (509), a force sensor (510) and a force measuring cylinder (511); the shaped material strip is inserted into the material guide plate (507); the material guide plate (507) is installed on the force measuring frame (512); the material pressing plate 2 (508) is arranged above the material guide plate (507); the material pressing plate 2 (508) presses the material strip (6) under the push of the material pressing cylinder (509); the end of the force sensor (510) is connected to a force measuring head (513); the force measuring head (513) applies a thrust to the silver point on the terminal under the drive of the force measuring cylinder (511) to test the welding strength.

8. The fully automatic welding equipment for automotive micro terminals as claimed in claim 7, characterized in that: The shaping upper punch (505) and the shaping lower punch (506) are both made of tungsten steel. The punch (501) controls the closing and opening of the punch by means of a micro cylinder (514). A micro switch (515) is additionally provided at the bottom of the left guide rail of the punch (501). The micro switch (515) is used to detect the working state of the punch slider.

9. The fully automatic welding equipment for automotive micro terminals according to any one of claims 1 to 5, characterized in that: The automatic cutting mechanism (5) comprises a cutting frame (601), on which a cutting die (602) and a cutting cylinder (603) are mounted. The material strip (6) passes through a material strip clamping assembly (101) and a material strip transfer assembly (102) and enters the cutting die (602). The cutting die (602) is connected to the piston end of the cutting cylinder (603) and cuts the material strip (6) into pieces under the drive of the cutting cylinder (603). A dividing assembly (603) is arranged below the cutting die (602). The material distribution mechanism (604) is connected to the force sensor (510) through the PLC, and a qualified product receiving box (605) and a defective product box (606) are arranged below the material distribution mechanism (604). A rotatable material distribution pipe is installed at the material outlet of the material distribution mechanism (604). The material distribution mechanism (604) rotates the material distribution pipe to the qualified product receiving box (605) or the defective product box (606) under the control of the PLC, and a waste material outlet (607) is opened on the side of the cutting frame (601).

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