Three-axis positioning tin dispensing device

Abstract

The invention discloses a three-axis positioning tin dispensing device which comprises a working frame, a three-axis servo motor, a tin wire conveying device, a tin dispensing device and a carrier positioning device. The tin wire conveying device comprises a first guide block, a driving wheel assembly, a driven wheel assembly and a second guide block, a guide cavity and a first switch are arranged at the upper part of the first guide block and used for monitoring whether the device is filled with tin wires; the second guide block is provided with a feeding pipe and a second switch and used for detecting whether tin wire conveying is normal or not. The carrier positioning device comprises a conveying device, a recognition device, a jacking device and a carrier. According to the three-axis positioning tin dispensing device, the tin conveying process is perfected, the error probability of the tin in the tin dispensing process is reduced, the carrier recognition and positioning technology is combined, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of tinning processing, in particular to a three-axis positioning tinning device. Background Art

[0002] Tinning is a crucial process in the electronics manufacturing industry. During the manufacturing process, liquid tin often needs to be precisely applied to specific locations on circuit boards to complete the connections. Existing tinning equipment is prone to errors in tin material delivery, leading to production stoppages and impacting efficiency. Summary of the Invention

[0003] The purpose of the present invention is to provide a three-axis positioning tinning device to solve the problem that tin material transportation is prone to error during the operation of the existing tinning device, so as to overcome the shortcomings of the existing technology.

[0004] The present invention provides a three-axis positioning tinning device through the following technical solutions, including a workbench, a three-axis servo motor, a tin wire conveying device, a tinning device, and a carrier positioning device, characterized in that:

[0005] The tin wire conveying device includes a mounting frame, a reel is mounted on the upper portion of the mounting frame, and a base plate is mounted on the lower portion of the mounting frame;

[0006] A first guide block is installed above the front surface of the base plate. The middle part of the front surface of the base plate is recessed to form a rounded rectangular groove. A driving wheel assembly and a driven wheel assembly are installed on the rounded rectangular groove. A second guide block is installed below the front surface of the base plate. A square groove is provided on the back surface of the base plate. A pull plate and a first spring are installed in the U-shaped groove by screws.

[0007] A guide cavity is provided on the upper portion of the first guide block, a first switch is installed side by side on the right side of the guide cavity, and the contact of the first switch is located at the exit of the guide cavity. An upper roller and a lower roller are installed on the lower portion of the first guide block;

[0008] The rounded rectangular groove is provided with a first through hole and a second through hole, the driving wheel assembly includes a first-layer driving gear, a second-layer driving roller with a V-shaped groove, and a driving wheel shaft, the driven wheel assembly includes a first-layer driven gear, a second-layer driven wheel piece, and a driven wheel shaft, the driving wheel shaft passes through the first through hole, the driven wheel shaft passes through the second through hole, the driving gear is meshed with the driven gear, and the driven wheel piece is directly opposite to the V-shaped groove of the driving roller;

[0009] The upper part of the second guide block is hollowed out to form a guide plate at the top and a guide seat at the bottom. The guide plate has a hole, and the guide seat is hollow to form a cavity. A feed pipe is installed in the hole of the guide plate and the cavity of the guide seat. A second spring is provided at the bottom of the feed pipe, and the second spring is installed at the bottom of the guide seat. A wire outlet tube extends from the bottom of the feed pipe. A second switch is installed side by side on the right side of the guide seat. The contact of the second switch is located in the hollow part between the guide plate and the guide seat. The diameter of the feed pipe is reduced at the hollow position of the second guide block, and a thicker pipe head is formed at the upper part.

[0010] In the square groove on the back of the base plate, the upper end of the pull plate is fixed to the upper right part of the square groove, one end of the first spring is fixed to the lower left part of the square groove, the other end of the first spring is connected to the lower end of the pull plate, and the lower end of the pull plate is also connected to a wrench. The pull plate and the driven wheel axle are an integrated structure, and the driven wheel axle is located in the middle of the pull plate. A screw hole is provided at the lower position of the pull plate, and a jacking screw is installed in the screw hole;

[0011] The carrier positioning device includes a conveying device, an identification device, a lifting device, and a carrier.

[0012] Furthermore, the three-axis servo motor is installed on a workbench, the tin wire feeding device is fixed on the y-axis robotic arm of the three-axis servo motor through a mounting frame, and the tin dot device is installed on the z-axis robotic arm of the three-axis servo motor.

[0013] Furthermore, the V-groove surface of the active roller is an undulating tooth surface structure, and the edge of the driven wheel is a fine-tooth structure.

[0014] Furthermore, the tinning device includes a tin-discharging needle and a heating pen; the tin-discharging needle is connected to the wire-discharging tube.

[0015] Furthermore, a motor is installed on the back of the substrate, and the motor is connected to the driving wheel axle.

[0016] Furthermore, the conveying device of the carrier positioning device includes a conveying frame, which is installed on a working frame. The conveying frame includes a first longitudinal beam and a second longitudinal beam. A conveyor belt is laid on the two longitudinal beams. A first cross beam and a second cross beam are provided between the two longitudinal beams. Taking the direction of movement of the conveyor belt as the front side, the front side is the first cross beam and the rear side is the second cross beam. An RFID identifier is installed on the inside of the first longitudinal beam.

[0017] Furthermore, the identification device of the carrier positioning device includes a fixed frame, a baffle, a blocking cylinder, and a magnetic sensor. With the direction of movement of the conveyor belt as the front side, the fixed frame is installed on the front side of the first beam of the conveyor frame, the magnetic sensor is installed on the rear side of the fixed frame, and the blocking cylinder is installed on the front side. The baffle is connected above the blocking cylinder, and the baffle is installed with an oil pressure buffer.

[0018] Furthermore, the carrier positioning device and the jacking device include a mounting plate, a lifting cylinder, and a lifting plate. The mounting plate is installed on the work frame and is located in the working area surrounded by the longitudinal beam and the transverse beam of the conveying frame. The lifting cylinder is installed on the mounting plate, and the lifting plate is installed on the lifting cylinder. The lifting plate is provided with a positioning pin.

[0019] Furthermore, magnetic metal sheets are installed on the opposite side edges of the bottom surface of the carrier, and the bottom surface is provided with a positioning hole and an RFID tag; the magnetic metal sheet is adapted to be matched with the magnetic sensor, the positioning hole is adapted to be matched with the positioning pin of the lifting plate, and the RFID tag is adapted to be matched with the RFID identifier, so that when the carrier is conveyed to the baffle and is stopped by the hydraulic buffer, the magnetic metal sheet contacts the magnetic sensor, the positioning hole is positioned opposite to the positioning pin of the lifting plate, and the RFID tag is positioned opposite to the RFID identifier on the inner side of the longitudinal beam of the conveying frame.

[0020] Furthermore, the rear side of the baffle is recessed to form a guide groove, and the front side of the fixing frame is protruded to form a guide block, and the guide groove matches the guide block.

[0021] The present invention has the following beneficial effects: it provides a three-axis positioning point tin device, improves the process of tin material transportation, can promptly alarm when tin material transportation errors occur, reminding staff to correct them, and combines carrier identification and positioning technology to improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is an overall schematic diagram of a three-axis positioning point tinning device according to the present invention.

[0023] Figure 2 This is a structural schematic diagram of the tin wire conveying device of the three-axis positioning point tin device described in the present invention.

[0024] Figure 3 This is a schematic structural diagram of the first guide block of a three-axis positioning point tinning device described in the present invention.

[0025] Figure 4 This is a structural schematic diagram and a partial cross-sectional diagram of the second guide block of a three-axis positioning point tinning device described in the present invention.

[0026] Figure 5 This is a schematic structural diagram of the front and back sides of a substrate of a three-axis positioning point tinning device according to the present invention.

[0027] Figure 6 This is a schematic structural diagram of a driving wheel assembly and a driven wheel assembly of a three-axis positioning point tinning device according to the present invention.

[0028] Figure 7 This is a structural schematic diagram of a tinning device of a three-axis positioning tinning device according to the present invention.

[0029] Figure 8 This is a structural schematic diagram of a carrier positioning device of a three-axis positioning point tinning device described in the present invention.

[0030] Figure 9 This is a schematic structural diagram of a conveying device of a three-axis positioning point tinning device according to the present invention.

[0031] Figure 10 This is a schematic structural diagram of an identification device for a three-axis positioning point tinning device according to the present invention.

[0032] Figure 11 This is a schematic structural diagram of the jacking device of the three-axis positioning point tinning device described in the present invention.

[0033] Figure 12 This is a schematic diagram of the front and back structures of a carrier of a three-axis positioning point tinning device described in the present invention.

[0034] in, Figures 1 to 12 The corresponding relationship between the reference numerals and component names is as follows:

[0035] 1 working frame, 2 three-axis servo motor, 3 tin wire feeding device, 4 tinning device, 5 carrier positioning device, 6 mounting frame, 7 reel, 8 substrate, 9 first guide block, 9a guide cavity, 9b first switch, 9c upper roller, 9d lower roller, 10 rounded rectangular groove, 11 driving wheel assembly, 11a driving gear, 11b driving roller, 11c driving wheel shaft, 12 driven wheel assembly, 12a driven gear, 12b driven wheel piece, 12c driven wheel shaft, 13 second guide block, 13a guide plate, 13b guide seat, 13c second switch, 14 square groove, 15 pull plate, 16 first spring, 17 first through hole, 18 second through hole, 19 feeding pipe, 19a tube head, 20 second spring, 21 wire tube, 22 wrench, 23 lifting screw, 24 motor, 25 tinning needle, 26 heating pen, 27 conveying device, 28 identification device, 29 lifting device, 30 carrier, 31 conveying frame, 31a first longitudinal beam, 31b second longitudinal beam, 32 conveyor belt, 33 RFID identifier, 34 fixing frame, 35 baffle, 36 blocking cylinder, 37 magnetic sensor, 38 hydraulic buffer, 39 mounting plate, 40 lifting cylinder, 41 lifting plate, 42 positioning pin, 43 magnetic metal sheet, 44 positioning hole, 45 RFID tag, 46a first crossbeam, 46b second crossbeam, 47 guide groove, 48 guide wheel. DETAILED DESCRIPTION

[0036] The technical solution of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0037] The components of the embodiments of the present application generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the present application.

[0038] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of this application.

[0039] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0041] Refer to the following Figures 1-12 A three-axis positioning point tinning device according to some embodiments of the present application is described.

[0042] like Figure 1 A three-axis positioning tinning device includes a workbench 1, a three-axis servo motor 2, a tin wire feeding device 3, a tinning device 4, and a carrier positioning device 5. The tin wire feeding device 3 includes a mounting frame 6, on top of which is mounted a reel 7 for storing tin wire, and a base plate 8 mounted on the bottom of the mounting frame 6 via screws. The three-axis servo motor 2 is mounted on the workbench 1, the tin wire feeding device 3 is fixed to the y-axis robot arm of the three-axis servo motor 2 via the mounting frame 6, and the tinning device 4 is mounted on the z-axis robot arm of the three-axis servo motor 2. When the device is in operation, the control center controls the three-axis servo motor 2, allowing the tin wire feeding device 3 mounted on the three-axis servo motor 2 to move in the x and y directions, and the tinning device 4 to move in the x, y, and z directions.

[0043] like Figure 2A first guide block 9 is installed above the front of the substrate 8. The middle part of the front of the substrate 8 is recessed to form a rounded rectangular groove 10. A driving wheel assembly 11 and a driven wheel assembly 12 are installed on the rounded rectangular groove 10. A second guide block 13 is installed below the front of the substrate 8. A square groove 14 is provided on the back of the substrate. A pull plate 15 and a first spring 16 are installed in the square groove 14 by screws.

[0044] like Figure 3 A guide cavity 9a is provided on the upper part of the first guide block 9, and a first switch 9b is installed side by side on the right side of the guide cavity 9a. The contact of the first switch 9b is located at the outlet of the guide cavity 9a, and an upper roller 9c and a lower roller 9d are installed at the lower part of the first guide block 9; the tin wire starts from the reel 7, passes through the guide cavity 9a, and bypasses the upper roller 9c and the lower roller 9d. When the equipment is working, the tin wire is in a taut state, so it presses the contact of the first switch 9b at the outlet of the guide cavity 9a, thereby sending a continuous electrical signal to the control center, indicating that the tin wire supply is normal.

[0045] like Figure 2 、 Figure 5 、 Figure 6 The rounded rectangular groove 10 is provided with a first through hole 17 and a second through hole 18. The driving wheel assembly 11 includes a first-layer driving gear 11a, a second-layer driving roller 11b with a V-shaped groove, and a driving wheel shaft 11c. The driving gear 11a rotates synchronously with the driving roller 11b; the driven wheel assembly 12 includes a first-layer driven gear 12a, a second-layer driven wheel piece 12b, and a driven wheel shaft 12c. The driven gear 12a rotates synchronously with the driven wheel piece 12b. The driving wheel shaft 11c passes through the first through hole 17, and the driven wheel shaft 12c passes through the second through hole 18. The driving gear 11a and The driven gear 12a is engaged, and the driven wheel piece 12b is facing the V-groove of the driving roller 11b. When the equipment is working, the tin wire starts from the lower roller 9d and enters the gap between the V-groove of the driving roller 11b and the driven wheel piece 12b. When the driving wheel assembly 11 rotates, it drives the driven wheel assembly 12 to rotate in the opposite direction. At this time, the clamped tin wire is driven to move downward. The V-groove surface of the driving roller 11b has an undulating tooth surface structure, and the edge of the driven wheel piece 12b has a fine tooth structure, which increases the friction when they contact the tin wire. The tin wire can move smoothly downward and enter the second guide block 13.

[0046] like Figure 2 、 Figure 4The upper part of the second guide block 13 is hollowed out to form a guide plate 13a at the top and a guide seat 13b at the bottom. The guide plate 13a has an opening, and the guide seat 13b is hollow to form a cavity. A feed pipe 19 is installed in the hole of the guide plate 13a and the cavity of the guide seat 13b. A second spring 20 is provided at the bottom of the feed pipe 19. The second spring 20 is installed at the bottom of the guide seat 13b. A wire outlet tube 21 extends from the bottom of the feed pipe 19. A second switch 13c is installed side by side on the right side of the guide seat 13b. The contact of the second switch 13c is located in the hollow part between the guide plate 13a and the guide seat 13b. The diameter of the feed tube 19 is reduced at the hollow position of the second guide block 13, and a thicker tube head 19a is formed at the upper part; when the equipment is working, the tin wire enters the feed tube 19 and passes through the wire outlet tube 21. At the entrance of the feed tube 19, if the tin wire cannot pass normally due to an accident, such as bending or folding, it will accumulate at the entrance of the feed tube 19, pressing the tube head 19a downward. Since the outer diameter of the tube head 19a is large, it further presses the contact of the second switch 13c located in the hollow part between the guide plate 13a and the guide seat 13b, thereby sending an electrical signal to the control center and issuing an error alarm.

[0047] like Figure 5 、 Figure 6 When the wrench 22 is closed, the first spring 16 pulls the pull plate 15 back to its original position. At this time, the driven wheel piece 12b buckles the active roller 11b, and the tin wire is clamped. Furthermore, a jacking screw 23 passes through the pull plate 15 and abuts against the bottom edge of the square slot 14. Therefore, the position of the lower end of the pull plate 15 can be slightly adjusted by tightening the jacking screw 23, thereby slightly adjusting the relative position of the driving wheel assembly 11 and the driven wheel assembly 12, thereby accommodating the use of tin wires of different radii. A motor 24 is also mounted on the back of the base plate 8. The output shaft of the motor 24 is connected to the driving wheel axle 11c, providing power for the rotation of the driving wheel assembly 11.

[0048] like Figure 7The tinning device 4 includes a tinning needle 25 and a heating pen 26; the tinning needle 25 is connected to the wire outlet tube 21, and the tinning needle 25 is in close contact with the heating pen 26. When the device is in operation, the three-axis servo motor 2 controls the tinning needle 25 to move to the correct position. The control center outputs a command to the motor 24, which drives the driving wheel assembly 11 to rotate a certain angle, thereby driving the tin wire downward a distance and being squeezed out of the tinning needle 25. At the same time, the heating pen 26 heats and melts the tin wire at the tinning needle 25, completing the tinning operation on the PCB board.

[0049] like Figure 8 The carrier positioning device 5 includes a conveyor 27, an identification device 28, a lifting device 29, and a carrier 30. During operation, the carrier 30 carries a PCB board that needs to be tinned, is transported from the previous station to the current station by the conveyor 27, is identified and positioned by the identification device 28, and is then lifted up by the lifting device 29 to start the tinning operation.

[0050] like Figure 9 、 10, 11, 12, the conveying device 27 is used to convey the carrier 30, the identification device 28 is used to stop and identify the carrier 30 and return the position information of the carrier 30, and the lifting device 29 lifts the carrier 30 after the carrier 30 is stopped. The conveying device 27 includes a conveying frame 31, which is installed on the work frame 1. The conveying frame 31 includes a first longitudinal beam 31a and a second longitudinal beam 31b. The conveyor belt 32 is laid on the two longitudinal beams. A first cross beam 46a and a second cross beam 46b are provided between the two longitudinal beams. Taking the direction of movement of the conveyor belt 32 as the front side, the front side is the first cross beam 46a, and the rear side is the second cross beam 46b. An RFID identifier 33 is installed on the inner side of the first longitudinal beam 31a. The identification device 28 includes a fixed frame 34, a baffle 35, a blocking cylinder 36, and a magnetic sensor 37. With the direction of movement of the conveyor belt 32 as the front side, the fixed frame 34 is installed on the front side of the first beam 31b of the conveyor frame 31, and the magnetic sensor 37 is installed on the rear side of the fixed frame 34 by screws. The blocking cylinder 36 is installed on the front side of the fixed frame 34 by screws. The baffle 35 is connected above the blocking cylinder 36. The rear side of the baffle 35 is recessed to form a guide groove 47, and the front side of the fixed frame 34 is protruding to form a guide block 48. The guide groove 47 of the baffle 35 matches the guide block 48 of the fixed frame 34, so that the baffle 35 can move up and down with the lifting and falling of the blocking cylinder 36. Two oil pressure buffers 38 are installed on the rear side of the baffle 35, which are used to stop the carrier 30 transmitted here. The lifting device 29 comprises a mounting plate 39, a lifting cylinder 40, and a lifting plate 41. The mounting plate 39 is mounted on the work frame 1, within the rectangular area enclosed by the longitudinal and transverse beams of the conveyor frame 31. The lifting cylinder 40 is mounted on the mounting plate 39, and the lifting plate 41 is mounted on the lifting cylinder 40. Two locating pins 42 are located at the diagonally opposite corners of the lifting plate 41. The carrier 30 is rectangular, with magnetic metal sheets 43 mounted on opposite edges of its bottom surface. The bottom surface also has two locating holes 44 and an RFID tag 45. Each carrier is equipped with a separate RFID tag.

[0051] When the production line starts working, the carrier 30 is mounted on the conveyor belt 32 and is transferred from the processing station where the previous process has been completed to the processing station where the process is to be carried out. The RFID tag 45 on the bottom surface of the carrier 30 is adapted to the RFID identifier 33 so that when the carrier 30 just enters the working area of the processing station, the RFID tag 45 contacts the RFID identifier 33, and the RFID identifier 33 identifies the tag information and transmits a signal back to the PLC control center, which plays a role in tracking the production line process. In addition, when the work starts, the lifting cylinder 40 is in a falling state, and the lifting plate 41 is lower than the horizontal plane of the conveyor belt 32, which will not hinder the passage of the carrier 30. The blocking cylinder 36 is in a lifting state, and the baffle 35 is higher than the horizontal plane of the conveyor belt 32. During the movement, the carrier 30 will hit the oil pressure buffer 38 on the baffle 35 and stop. At this time, the position of the carrier 30 is just the working position for the process. At the same time, the magnetic metal sheet 43 on the bottom edge of the carrier 30 contacts the magnetic sensor 37, which sends a signal to the PLC control center, which in turn issues a command to raise the lifting cylinder 40. The two locating holes 44 on the bottom of the carrier 30 are aligned with the two locating pins 42 on the lifting plate 41. When the lifting cylinder 40 is raised, the two locating pins 42 on the lifting plate 41 insert into the two locating holes 44 on the bottom of the carrier 30, completing the positioning. The lifting plate 41 then lifts the carrier 30 off the conveyor belt 32, allowing the PLC control center to control the robotic arm for processing. Once the processing is complete, the lifting cylinder 40 descends, returning the carrier 30 to the conveyor belt 32, freeing the locating holes 44 from the locating pins 42. The blocking cylinder 36 then descends, causing the baffle 35 to descend below the level of the conveyor belt 32. The carrier 30 then moves along the conveyor belt 32, crossing the baffle 35 to the next station. When the carrier 30 leaves, the blocking cylinder 36 is lifted up, forming a complete working cycle.

[0052] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A three-axis positioning tinning device, comprising a work frame, a three-axis servo motor, a tin wire feeding device, a tinning device, and a carrier positioning device, characterized in that: The tin wire conveying device includes a mounting frame, a reel is mounted on the upper portion of the mounting frame, and a base plate is mounted on the lower portion of the mounting frame; A first guide block is installed above the front surface of the base plate. The middle part of the front surface of the base plate is recessed to form a rounded rectangular groove. A driving wheel assembly and a driven wheel assembly are installed on the rounded rectangular groove. A second guide block is installed below the front surface of the base plate. A square groove is provided on the back surface of the base plate. A pull plate and a first spring are installed in the U-shaped groove by screws. A guide cavity is provided on the upper portion of the first guide block, a first switch is installed side by side on the right side of the guide cavity, and the contact of the first switch is located at the exit of the guide cavity. An upper roller and a lower roller are installed on the lower portion of the first guide block; The rounded rectangular groove is provided with a first through hole and a second through hole, the driving wheel assembly includes a first-layer driving gear, a second-layer driving roller with a V-shaped groove, and a driving wheel shaft, the driven wheel assembly includes a first-layer driven gear, a second-layer driven wheel piece, and a driven wheel shaft, the driving wheel shaft passes through the first through hole, the driven wheel shaft passes through the second through hole, the driving gear is meshed with the driven gear, and the driven wheel piece is directly opposite to the V-shaped groove of the driving roller; The upper part of the second guide block is hollowed out to form a guide plate at the top and a guide seat at the bottom. The guide plate has a hole, and the guide seat is hollow to form a cavity. A feed pipe is installed in the hole of the guide plate and the cavity of the guide seat. A second spring is provided at the bottom of the feed pipe, and the second spring is installed at the bottom of the guide seat. A wire outlet tube extends from the bottom of the feed pipe. A second switch is installed side by side on the right side of the guide seat. The contact of the second switch is located in the hollow part between the guide plate and the guide seat. The diameter of the feed pipe is reduced at the hollow position of the second guide block, and a thicker pipe head is formed at the upper part. In the square groove on the back of the base plate, the upper end of the pull plate is fixed to the upper right part of the square groove, one end of the first spring is fixed to the lower left part of the square groove, the other end of the first spring is connected to the lower end of the pull plate, and the lower end of the pull plate is also connected to a wrench. The pull plate and the driven wheel axle are an integrated structure, and the driven wheel axle is located in the middle of the pull plate. A screw hole is provided at the lower position of the pull plate, and a jacking screw is installed in the screw hole; The carrier positioning device includes a conveying device, an identification device, a lifting device, and a carrier.

2. A three-axis positioning point tinning device according to claim 1, characterized in that: The three-axis servo motor is installed on a workbench, the tin wire feeding device is fixed on the y-axis mechanical arm of the three-axis servo motor through a mounting frame, and the tin dot device is installed on the z-axis mechanical arm of the three-axis servo motor.

3. The three-axis positioning point tinning device according to claim 1, characterized in that: The V-groove surface of the active roller is an undulating tooth surface structure, and the edge of the driven wheel is a fine-tooth structure.

4. A three-axis positioning point tinning device according to claim 1, characterized in that: The tinning device comprises a tin-discharging needle and a heating pen; the tin-discharging needle is connected to the wire-discharging tube.

5. The three-axis positioning point tinning device according to claim 1, characterized in that: A motor is also installed on the back of the base plate, and the motor is connected to the driving wheel shaft.

6. The three-axis positioning point tinning device according to claim 1, characterized in that: The conveying device of the carrier positioning device includes a conveying frame, which is installed on a working frame. The conveying frame includes a first longitudinal beam and a second longitudinal beam. A conveyor belt is laid on the two longitudinal beams. A first cross beam and a second cross beam are provided between the two longitudinal beams. Taking the direction of movement of the conveyor belt as the front side, the front side is the first cross beam and the rear side is the second cross beam. An RFID identifier is installed on the inside of the first longitudinal beam.

7. The three-axis positioning point tinning device according to claim 1, characterized in that: The identification device of the carrier positioning device includes a fixed frame, a baffle, a blocking cylinder, and a magnetic sensor. With the direction of movement of the conveyor belt as the front side, the fixed frame is installed on the front side of the first beam of the conveyor frame, the magnetic sensor is installed on the rear side of the fixed frame, and the blocking cylinder is installed on the front side. The baffle is connected above the blocking cylinder, and the baffle is installed with an oil pressure buffer.

8. The three-axis positioning point tinning device according to claim 1, characterized in that: The carrier positioning device and the jacking device include a mounting plate, a lifting cylinder, and a lifting plate. The mounting plate is installed on the work frame and is located in the working area surrounded by the longitudinal beam and the transverse beam of the conveying frame. The lifting cylinder is installed on the mounting plate, and the lifting plate is installed on the lifting cylinder. The lifting plate is provided with a positioning pin.

9. The three-axis positioning point tinning device according to claim 7, characterized in that: Magnetic metal sheets are installed on the opposite side edges of the bottom surface of the carrier, and the bottom surface is provided with a positioning hole and an RFID tag; the magnetic metal sheet is adapted to be arranged with the magnetic sensor, the positioning hole is adapted to be arranged with the positioning pin of the lifting plate, and the RFID tag is adapted to be arranged with the RFID identifier, so that when the carrier is conveyed to the baffle and is stopped by the hydraulic buffer, the magnetic metal sheet contacts the magnetic sensor, the positioning hole is positioned opposite to the positioning pin of the lifting plate, and the RFID tag is positioned opposite to the RFID identifier on the inner side of the longitudinal beam of the conveying frame.

10. The three-axis positioning point tinning device according to claim 7, characterized in that: The rear side of the baffle is concave to form a guide groove, and the front side of the fixing frame is convex to form a guide block, and the guide groove matches the guide block.

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