RFID antenna tail end pin welding device

Abstract

The invention relates to the field of antenna welding devices, in particular to an RFID antenna tail end pin welding device which comprises a bottom plate, a welding gun arranged on the upper side of the bottom plate, a center column fixedly installed in the center of the upper side of the bottom plate, a transposition mechanism used for rapidly switching welding point positions and a correcting mechanism used for correcting the tail end of an antenna. The rotating base plate, the discharging base and the pushing assembly in the transposition mechanism are matched, circumferential rotation of the rotating base plate is matched with radial sliding of the discharging base, the discharging base drives a circuit board on the discharging base to slide once every time the rotating base plate rotates by a circle, and therefore automatic switching of welding point positions is achieved; the clamping plate, the pressing wheel and the wedge-shaped piece in the correcting mechanism are adopted, the wedge-shaped piece triggers the moving assembly to drive the clamping plate to clamp and straighten the tail end of the antenna, meanwhile, the pressing wheel downwards presses the tail end of the antenna, the problem of insufficient soldering or poor contact caused by antenna bending in the welding process is effectively solved, and the welding quality is ensured.

Description

Technical Field

[0001] The present invention relates to the field of antenna welding devices, and specifically to an RFID antenna end pin welding device. Background Art

[0002] As a key component in a radio frequency identification (RFID) system, the end pins of an RFID antenna need to be precisely welded to two contacts on a circuit board to achieve stable signal transmission. Since RFID antennas are usually made of flexible materials, their end pins are prone to bending or offset during movement. If there is a deviation in the welding position, it will directly affect the impedance matching and signal transceiver performance of the antenna. Therefore, ensuring high-precision alignment and reliable fixation of the antenna end and the circuit board contacts during the welding process is an important link in improving the overall performance of RFID devices.

[0003] Existing RFID antenna welding devices mostly consist of a base and a welding gun. During operation, the circuit board needs to be manually placed on the base. After the first contact is welded by the welding gun, the operation needs to be paused, and the position of the circuit board needs to be manually adjusted so that the second contact moves under the welding gun for secondary welding. This process relies on manual operation, which is not only cumbersome and inefficient but also prone to welding point offset due to human error during the position adjustment process, affecting the yield of finished products.

[0004] However, the above traditional welding devices also lack the function of correcting the antenna end. During welding, problems such as poor soldering and poor contact may occur due to the antenna end not being fully straightened or flattened, further reducing the welding quality.

[0005] Therefore, there is an urgent need for an efficient welding device that can automatically switch welding points and integrate the end correction function to solve the deficiencies in the existing technology. Summary of the Invention

[0006] To solve the above technical problems, the technical solution adopted by the present invention is: an RFID antenna end pin welding device, including a bottom plate, a welding gun is arranged on the upper side of the bottom plate, a central column is fixedly installed at the central position on the upper side of the bottom plate, and the device further includes a position-changing mechanism for quickly switching welding points and a correction mechanism for correcting the antenna end.

[0007] The position-changing mechanism includes a rotating substrate rotatably arranged outside the central column. A plurality of material placing seats are equidistantly arranged along the circumferential direction of the central column on the rotating substrate, and a pushing component for pushing the material placing seat to slide along the radial direction of the central column. When the rotating substrate rotates one week, the material placing seat located at the position of the welding gun drives the circuit board thereon to change another welding point to directly below the welding gun.

[0008] The correction mechanism includes two clamping plates and a pressing wheel arranged on the feeding seat through a moving component, and a wedge-shaped piece fixedly installed on the right side of the welding torch. When the welding torch is welding, the wedge-shaped piece drives the clamping plates to clamp on the front and back sides of the antenna through the moving component first, and then moves to the left to straighten the end of the antenna, and the pressing wheel presses down on the end of the antenna.

[0009] Preferably, the rotating substrate is composed of a bearing plate rotatably arranged outside the central column and a plurality of U-shaped plates fixedly installed on the bearing plate at equal intervals along the circumferential direction of the central column, and the feeding seat slides on the upper side of the horizontal section of the U-shaped plate.

[0010] Preferably, three clamping plates are slidably arranged on the feeding seat, tension springs are arranged between the three clamping plates and the feeding seat, an unlocking piece is slidably arranged up and down at the central position of the feeding seat, and the unlocking piece is hinged to the corresponding clamping plate through a telescopic square rod.

[0011] Preferably, the pushing component includes a fixed column fixedly installed on the upper side of the central column, a guiding groove is opened on the outer side of the fixed column, a sliding plate is slidably arranged up and down on one side of the feeding seat close to the fixed column, and a clamping groove part moving along the guiding groove is slidably arranged on one side of the sliding plate close to the fixed column along the length direction of the sliding plate.

[0012] Preferably, a guiding piece is slidably arranged left and right on the upper side of the fixed column, the guiding piece is locked together with the fixed column through a fastening screw, two convex columns arranged symmetrically up and down are fixedly installed on one side of the sliding plate close to the fixed column, and a pushing plate is fixedly installed at the right end of the upper side of the central column.

[0013] Preferably, the moving component includes a lifting frame slidably arranged up and down at one side of the upper end of the feeding seat far from the central column through a guiding rod, a feeding frame is slidably arranged on the lifting frame along the radial direction of the central column, and the inner side of the feeding frame is hinged to the two clamping plates through two groups of connecting rods respectively.

[0014] Preferably, two symmetrically arranged linkage brackets are slidably arranged up and down at positions corresponding to the connecting rods on the outer side of the feeding frame, the lower sides of the two linkage brackets are jointly rotatably connected to the pressing wheel, the pressing wheel is located between the two clamping plates, and a spiral spring is arranged between the linkage bracket and the feeding frame.

[0015] Preferably, a pressure locking block is hinged to one side of the upper end of the feeding seat far from the central column, an adjusting stud is threadedly connected to the lifting frame, the adjusting stud corresponds to the upper part of the position of the pressure locking block far from its hinge point, and a torsion spring is arranged between the pressure locking block and the feeding seat.

[0016] Preferably, a round head column is slidably arranged on the feeding frame, a pushing spring is arranged between the round head column and the feeding frame, a hemispherical groove for the round head column to insert is opened on the lifting frame, and convex blocks are fixedly installed on the cylindrical surface of the pressing wheel at equal intervals along its circumferential direction.

[0017] Preferably, a toothed square rod is slidably arranged on one side of the material placing seat away from the central column. A triangular block for extending into the tooth groove of the toothed square rod is fixedly installed on the lifting frame. An L-shaped plate for pushing the toothed square rod towards the central column is fixedly installed at the rear end on the upper side of the bottom plate.

[0018] The beneficial effects of the present invention are as follows: First, the present invention adopts the cooperation of the rotating substrate, the material placing seat and the pushing component in the transposition mechanism. Through the circumferential rotation of the rotating substrate and the radial sliding cooperation of the material placing seat, every time the rotating substrate rotates one week, the material placing seat drives the circuit board on it to slide once, so as to realize the automatic switching of the welding points, without the need for manual adjustment of the circuit board position, significantly improving the welding efficiency and reducing the human error.

[0019] Second, the present invention adopts the clamping plate, the pressing wheel and the wedge-shaped part in the correction mechanism. The wedge-shaped part triggers the moving component to drive the clamping plate to clamp and straighten the end of the antenna. At the same time, the pressing wheel presses down the end of the antenna, effectively avoiding the problems of virtual soldering or poor contact caused by the bending of the antenna during the welding process, ensuring the welding quality, and the raised block on the pressing wheel can also press out a dent at the end of the antenna, thereby increasing the firmness of the welding between the antenna and the circuit board through the anchoring effect.

[0020] Third, the present invention adopts three clamping plates and unlocking parts on the material placing seat. Through the linkage design of the tension spring and the telescopic square rod, the circuit board can be quickly clamped and released, further improving the convenience of the welding operation, and the telescopic square rod can also adaptively clamp the circuit board with different aspect ratios. Description of the Drawings

[0021] The present invention will be further described below with reference to the drawings and embodiments.

[0022] Figure 1 is the overall structural schematic diagram of the present invention.

[0023] Figure 2 is the partial front view of the bottom plate, the welding torch, the material placing seat and the fixed column in the present invention.

[0024] Figure 3 is the structural schematic diagram of the central column, the material placing seat, the sliding plate and the clamping plate in the present invention.

[0025] Figure 4 is the structural schematic diagram of the fixed column, the guide groove and the card slot part in the present invention.

[0026] Figure 5 is the structural schematic diagram of the material placing seat, the unlocking part, the clamping plate and the pressure locking block in the present invention.

[0027] Figure 6 is the structural schematic diagram of the material placing seat, the clamping plate, the connecting rod and the pressing wheel in the present invention.

[0028] Figure 7 It is a partial cross-sectional view of the material feeding base, lifting frame, feeding frame and linkage bracket in the present invention.

[0029] Figure 8 It is a partial cross-sectional view of the lifting frame, feeding frame, round head column and triangular block in the present invention.

[0030] Figure 9 It is a schematic structural view of the pressure wheel and the raised block in the present invention.

[0031] In the figure: 1, bottom plate; 2, welding torch; 3, central column; 4, commutation mechanism; 5, straightening mechanism; 31, pushing ring part; 32, linkage rod; 41, rotating base plate; 42, material feeding base; 43, pushing assembly; 51, moving assembly; 52, clamping plate; 53, pressure wheel; 54, wedge-shaped part; 55, round head column; 56, toothed square rod; 411, bearing plate; 412, U-shaped plate; 421, clamping plate; 422, unlocking part; 423, telescopic square rod; 424, pressure locking block; 431, fixed column; 432, guide groove; 433, sliding plate; 434, card slot part; 435, guide part; 436, raised column; 437, pushing plate; 511, lifting frame; 512, feeding frame; 513, connecting rod; 514, linkage bracket; 515, adjusting stud; 531, raised block; 561, triangular block; 562, L-shaped plate. Detailed implementation manners

[0032] The embodiments of the present invention will be described in detail below. The described embodiments are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention. For those not specified in the embodiments regarding specific technologies or conditions, they shall be carried out according to the technologies or conditions described in the literature in this field or according to the product specifications.

[0033] Refer to Figure 1 and Figure 2 , an RFID antenna end pin welding device, including a bottom plate 1, a welding torch 2 is arranged on the upper side of the bottom plate 1, a central column 3 is fixedly installed at the central position on the upper side of the bottom plate 1, and the device further includes a commutation mechanism 4 for quickly switching welding points and a straightening mechanism 5 for straightening the end of the antenna.

[0034] When it is necessary to weld the antenna on the circuit board, the operator manually places the circuit board and the antenna on the commutation mechanism 4 so that the contacts on the circuit board are placed opposite to the end of the antenna. Then rotate the commutation mechanism 4 to drive the circuit board and the antenna to move to the lower part of the welding torch 2, and at the same time place a new circuit board and antenna on the commutation mechanism 4. Move the welding torch 2 downward, and the welding torch 2 rolls and straightens the end of the antenna through the straightening mechanism 5.

[0035] Subsequently, the welding torch 2 welds the end of the antenna to a contact on the circuit board. Then, the welding torch 2 is reset. Next, the circuit board is rotated again by the transposition mechanism 4, and the end of the antenna that has moved to the position of the welding torch 2 is welded to the circuit board. At the same time, a new circuit board and the antenna are placed on the transposition mechanism 4.

[0036] When the circuit board and the antenna after one contact is welded are rotated again to the lower part of the welding torch 2, the transposition mechanism 4 pushes the circuit board and the antenna to move, so that another contact on the circuit board corresponds to the lower part of the welding torch 2. Subsequently, the welding torch 2 is moved downward, so that the welding torch 2 welds the end of the antenna to another contact on the circuit board.

[0037] Refer to Figure 1 、 Figure 2 and Figure 3 As shown in

[0038] Refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 5 As shown in

[0039] In this embodiment, a pushing ring member 31 is fixedly installed on the outer side of the central column 3. The front end of the lower side of the pushing ring member 31 is in a downward convex structure. A linkage rod 32 is fixedly installed on the lower part of the unlocking member 422. When the linkage rod 32 is located in the front part of the central column 3, the convex structure of the pushing ring member 31 pushes the linkage rod 32 downward, so that the linkage rod 32 drives the unlocking member 422 to move downward synchronously.

[0040] When the unlocking member 422 moves downward, the unlocking member 422 drives the telescopic square rod 423 thereon to move synchronously. Since the tension spring pulls the three clamping plates 421 to approach each other by its own elastic force, when the telescopic square rod 423 starts to move, it contracts itself. When the total length of the telescopic square rod 423 contracts to the shortest, the unlocking member 422 is continuously moved downward, so that the unlocking member 422 pushes the three clamping plates 421 to move away from each other through the telescopic square rod 423.

[0041] It should be noted that, as Figure 5 shown, when the circuit board is rectangular and the contacts on the circuit board are located on the long side of the circuit board, the displacement of the clamping plate 421 closer to the central column 3 is greater than that of the other two clamping plates 421, so that the displacement of the clamping plate 421 closer to the central column 3 pushing the unlocking member 422 upward through the telescopic square rod 423 thereon is greater than that of the other two clamping plates 421, thereby causing the unlocking member 422 to stretch the telescopic square rods 423 on the two symmetrically arranged clamping plates 421. Subsequently, the operator places the circuit board above the feeding seat 42 in front of the central column 3, and makes the solder joints on the circuit board be on the side far from the central column 3. Then the operator manually rotates the pressure locking block 424, and then places the end of the antenna on the feeding seat 42, and manually adjusts the corresponding position of the end of the antenna and the contacts on the circuit board. After that, the external force on the pressure locking block 424 is removed, so that the torsion spring pushes the pressure locking block 424 through its own elastic force to clamp and fix the antenna on the feeding seat 42.

[0042] Then the operator manually rotates the rotating substrate 41, so that the rotating substrate 41 drives the circuit board and the antenna thereon to move to the lower part of the welding torch 2 through the feeding seat 42. During the rotation process, the feeding seat 42 drives the unlocking member 422 to move to the right part of the pushing ring member 31, so that the pushing ring member 31 no longer pushes the linkage rod 32 downward, thereby causing the tension spring to pull the three clamping plates 421 closer to each other through its own elastic force, and further clamping and fixing the circuit board on the feeding seat 42.

[0043] When the feeding seat 42 with the antenna and the circuit board rotates to the lower part of the welding torch 2, the feeding seat 42 without the antenna and the circuit board synchronously rotates to the front of the central column 3. Then the operator places the new antenna and the circuit board in position on the feeding seat 42, and the placement and locking process is the same as above.

[0044] Referring to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , the pushing component 43 includes a fixed column 431 fixedly installed on the upper side of the central column 3. A guiding groove 432 is formed on the outer side of the fixed column 431. A sliding plate 433 is arranged to slide up and down on one side of the feeding seat 42 close to the fixed column 431. A clamping groove member 434 moving along the guiding groove 432 is arranged to slide along the length direction of the sliding plate 433 on one side of the sliding plate 433 close to the fixed column 431.

[0045] It should be noted that the guiding groove 432 is composed of two annular grooves arranged up and down and two symmetrically arranged spiral grooves. The spiral grooves are located at the rear of the fixed column 431. The two symmetrically arranged spiral grooves are arranged in an X shape. The spiral grooves respectively connect the end of the upper annular groove and the end of the lower annular groove together, so that the guiding groove 432 forms a closed track.

[0046] It should be noted that the card slot member 434 is composed of a sliding plate that slides inside the sliding plate 433 and a rotating member that is rotatably arranged on one side of the sliding plate 433 close to the fixed column 431. The rotating member slides inside the guide groove 432. A fourth spring is provided between the sliding plate and the sliding plate 433. In the initial state, the fourth spring is in a compressed state, so that the fourth spring pushes the sliding plate in the direction close to the fixed column 431 through its own elastic force, so that the sliding plate drives the rotating member to always be located inside the guide groove 432.

[0047] Refer to Figure 1 and Figure 2 As shown in

[0048] and

[0049] Refer to Figure 2 、 Figure 3 and Figure 4 The upper side of the fixed column 431 is provided with a guide member 435 that slides left and right. The guide member 435 is locked to the fixed column 431 by a fastening screw. Two convex columns 436 are symmetrically arranged up and down on one side of the sliding plate 433 close to the fixed column 431. A push plate 437 is fixedly installed at the upper right end of the central column 3.

[0050] In the initial state, the card slot member 434 located in the front of the central column 3 is located inside the annular groove at the lower part of the guide groove 432, so that the card slot member 434 drives the sliding plate 433 to be in the lower position. The sliding plate 433 drives the lower convex column 436 to be at the same height as the push plate 437. At the same time, the sliding plate 433 drives the upper convex column 436 to be located below the guide member 435.

[0051] It should be noted that the guide member 435 is composed of an adjusting plate that is slidably connected left and right on the upper side of the fixed column 431 and two limit plates that are symmetrically arranged left and right and fixedly installed at the lower right end of the adjusting plate. The front part of the limit plate is of an inclined structure, and the rear part of the limit plate is of a straight plate structure arranged longitudinally. The front parts of the two limit plates form an opening structure, and the distance between the straight plate structures of the two limit plates is equal to the diameter of the convex column 436.

[0052] The operator pre - moves the position of the guide member 435 left and right in advance, so that the guide member 435 can drive the circuit board replacement contact to contact with the welding torch 2 by pushing the protruding column 436 at the upper part.

[0053] When the material feeding seat 42 rotates to the lower part of the welding torch 2, the material feeding seat 42 drives the protruding column 436 at the lower part to move to the left part of the pushing plate 437 through the sliding plate 433, so that the pushing plate 437 abuts against the outside of the protruding column 436 at the lower part. Furthermore, through the limit of the pushing plate 437 and a vertical section of the U - shaped plate 412 close to the central column 3, the position of the material feeding seat 42 is fixed, preventing the material feeding seat 42 from sliding during welding and ensuring the welding precision.

[0054] Refer to Figure 1 、 Figure 2 and Figure 6 As shown in

[0055] Refer to Figure 2 、 Figure 6 and Figure 7 The correction mechanism 5 includes two clamping plates 52 and a pressing wheel 53 arranged on the material feeding seat 42 through a moving component 51, and a wedge - shaped member 54 fixedly installed on the right side of the welding torch 2. When the welding torch 2 is welding, the wedge - shaped member 54 drives the clamping plates 52 to first clamp on the front and back sides of the antenna through the moving component 51, and then move to the left to straighten the end of the antenna, and the pressing wheel 53 presses down the end of the antenna.

[0056] It should be noted that each group of connecting rods 513 is composed of two connecting rods 513 arranged up and down, so that a parallelogram structure is formed between each group of connecting rods 513, the corresponding clamping plate 52 and the corresponding feeding frame 512.

[0057] Refer to Figure 6 、 Figure 7 and Figure 9 As shown in

[0058] It should be noted that a first spring is provided between the lifting frame 511 and the feeding base 42, and a second spring is provided between the feeding frame 512 and the lifting frame 511. In the initial state, the first spring pushes the lifting frame 511 upward by its own elastic force, so that the lifting frame 511 drives the clamping plate 52 to be located above the circuit board through the connecting rod 513, and the clamping plate 52 does not contact the circuit board. At the same time, the second spring pushes the feeding frame 512 by its own elastic force, so that the feeding frame 512 drives the clamping plate 52 to be located at a position away from the central column 3.

[0059] Refer to Figure 6 、 Figure 7 and Figure 8 , a round head column 55 is slidably arranged on the feeding frame 512, a pushing spring is arranged between the round head column 55 and the feeding frame 512, and a hemispherical groove for the round head column 55 to insert is formed on the lifting frame 511.

[0060] In the initial state, the feeding frame 512 drives the round head column 55 to correspond to the position of the hemispherical groove, so that the pushing spring pushes the round head column 55 to insert into the inside of the hemispherical groove through its own elastic force, thereby locking the lifting frame 511 and the feeding frame 512 together.

[0061] When the feeding base 42 with the antenna and the circuit board rotates to the lower part of the welding torch 2, move the welding torch 2 downward. The inclined surface of the wedge-shaped member 54 driven by the welding torch 2 abuts against one side of the feeding frame 512 away from the central column 3. Since the lifting frame 511 and the feeding frame 512 are locked together, the wedge-shaped member 54 drives the lifting frame 511 to move downward synchronously by pushing the feeding frame 512 downward.

[0062] In this embodiment, a cantilever plate is fixedly installed at the upper right end of the bottom plate 1. The cantilever plate is slidably connected with the welding torch 2 up and down, and an electric cylinder for driving the welding torch 2 to move up and down is fixedly installed on the cantilever plate.

[0063] The feeding frame 512 drives the linkage bracket 514 to move downward synchronously through the spiral spring, so that the linkage bracket 514 drives the pressing wheel 53 to abut against the outside of the end of the antenna. Then continue to move the wedge-shaped member 54 downward, so that the feeding frame 512 drives the lower part of the clamping plate 52 to abut against the circuit board. At the same time, the feeding frame 512 compresses the spiral spring, and the elastic force of the spiral spring pushes the linkage bracket 514 downward, so that the linkage bracket 514 drives the pressing wheel 53 to tightly press the end of the antenna.

[0064] Then continue to move the feeding frame 512 downward. Since the lower part of the clamping plate 52 is blocked by the circuit board and cannot move downward any more, the feeding frame 512 drives the two clamping plates 52 to clamp the outside of the end of the antenna through the connecting rod 513.

[0065] In this embodiment, a plug rod is fixedly installed on one of the two clamping plates 52 at the same feed frame 512, and the plug rod is slidably inserted into the other clamping plate 52, so as to ensure that the height positions of the two clamping plates 52 at the same feed frame 512 are always the same, and further enable the two clamping plates 52 to symmetrically move and clamp the antenna end, preventing the antenna from being clamped obliquely.

[0066] Refer to Figure 1 , Figure 2 , Figure 6 and Figure 7 , a toothed square rod 56 is slidably arranged on the side of the feeding seat 42 away from the central column 3, a triangular block 561 for extending into the tooth groove of the toothed square rod 56 is fixedly installed on the lifting frame 511, and an L-shaped plate 562 for pushing the toothed square rod 56 in the direction close to the central column 3 is fixedly installed at the rear end of the upper side of the bottom plate 1. A third spring is arranged between the toothed square rod 56 and the feeding seat 42.

[0067] During the process of the lifting frame 511 moving downward, the lifting frame 511 intermittently pushes the toothed square rod 56 to the left through the triangular block 561 thereon. When the two clamping plates 52 clamp the antenna end, the lifting frame 511 no longer moves downward. At this time, the third spring pushes the toothed square rod 56 to the right through its own elastic force, so that the triangular block 561 is inserted into the tooth groove of the toothed square rod 56. By the block of the horizontal section of the tooth groove of the toothed square rod 56 on the upper side of the triangular block 561, the upward movement of the lifting frame 511 is prevented.

[0068] Refer to Figure 5 , Figure 6 , Figure 7 and Figure 9 , an adjusting stud 515 is threadedly connected to the lifting frame 511, the adjusting stud 515 corresponds to the upper part of the pressing lock block 424 away from its hinge point position, and raised blocks 531 are fixedly installed on the cylindrical surface of the pressing wheel 53 at equal intervals along its circumference.

[0069] The operator pre-rotates the adjusting stud 515 according to the diameter of the antenna end, so that when the two clamping plates 52 clamp the antenna end, the adjusting stud 515 abuts against the upper part of the pressing lock block 424, further pushing the pressing lock block 424 to lock the antenna and preventing the lifting frame 511 from continuing to move downward, resulting in excessive clamping of the antenna end by the two clamping plates 52.

[0070] Then, move the wedge 54 downward again, so that the wedge 54 pushes the feed frame 512 to move leftward. The feed frame 512 drives the round head column 55 to disengage from the inside of the hemispherical groove. The feed frame 512 drives the two clamping plates 52 to move synchronously through the connecting rod 513, so that the two clamping plates 52 straighten the end of the antenna. At the same time, the feed frame 512 drives the pressing wheel 53 to roll against the end of the antenna through the linkage bracket 514, thereby pressing the end of the antenna against the contact point of the circuit board to ensure the welding quality.

[0071] While the pressing wheel 53 is rolling the end of the antenna, a number of indentations are rolled out on the end of the antenna through the raised blocks 531 thereon. The indentations form a mechanical locking effect, and physical anchor points will be formed after the solder penetrates into the indentations and solidifies, thereby improving the welding firmness between the antenna and the circuit board.

[0072] When the pressing wheel 53 and the clamping plate 52 move to not contact the antenna, the soldering gun 2 moves downward to abut against the contact point on the side of the antenna and the circuit board away from the central column 3, thereby welding the end of the antenna and the contact point on the side of the circuit board away from the central column 3 together.

[0073] After welding is completed, slightly move the soldering gun 2 upward so that the soldering gun 2 no longer contacts the antenna. After the solder flux solidifies, reset the soldering gun 2 upward. At the same time, the second spring pushes the feed frame 512 to move rightward through its own elastic force. Then rotate the rotating substrate 41 so that the rotating substrate 41 moves the circuit board and the antenna to be welded to the lower part of the soldering gun 2 again. At the same time, the operator places the new circuit board and the antenna in position on the feeding seat 42 in front of the central column 3.

[0074] The toothed square rod 56 rotated to the rear contacts the front side of the horizontal section of the L-shaped plate 562, so that the L-shaped plate 562 pushes the toothed square rod 56 at the rear forward, so that the toothed square rod 56 no longer blocks the triangular block 561. Subsequently, the first spring pushes the lifting frame 511 to reset through its own elastic force. At the same time, move the soldering gun 2 downward to weld the contact point on the side of the new circuit board away from the central column 3 and the end of the antenna.

[0075] The card slot part 434 rotated to the rear moves to the spiral groove of the guide groove 432, and drives the sliding plate 433 to move upward along the spiral groove of the guide groove 432. Subsequently, continue to rotate the rotating substrate 41 so that the card slot part 434 moves along the spiral groove of the guide groove 432 to the inner part of the upper annular groove of the guide groove 432, so that the sliding plate 433 drives the lower fixing column 431 to move to the upper part of the push plate 437. At the same time, the sliding plate 433 drives the upper fixing column 431 to move to the same height as the guide part 435.

[0076] After that, continue to rotate the rotating substrate 41 to drive the circuit board with one contact welded to move to the lower part of the welding torch 2 again. During this process, the sliding plate 433 drives the upper fixing column 431 to move between the two straight-line segments of the guiding member 435, so that the guiding member 435 pushes the upper fixing column 431 to the right. The upper fixing column 431 drives the material feeding seat 42 to move synchronously through the sliding plate 433, and further makes the material feeding seat 42 drive the contact on the side of the circuit board close to the central column 3 to move to directly below the welding torch 2. Then, move the welding torch 2 downward again for welding, and the principle is the same as above.

[0077] Then rotate the rotating substrate 41 to drive the circuit board with two contacts welded to move to the front of the central column 3. During this process, the clamping groove member 434 moves along another spiral groove of the guiding groove 432 to the inside of the lower annular groove of the guiding groove 432, so that the two fixing columns 431 move downward to reset. Then the operator manually replaces the material of the circuit board.

[0078] Refer to Figures 1 to 9 , when the present invention welds the end of the antenna to the circuit board, the following steps are further included: The first step is that the operator places the circuit board and the antenna correspondingly above the material feeding seat 42 located in front of the central column 3. Then the operator manually rotates the rotating substrate 41, so that the rotating substrate 41 drives the circuit board and the antenna thereon to move to the lower part of the welding torch 2 through the material feeding seat 42.

[0079] The second step is to move the welding torch 2 downward. The welding torch 2 drives the pressing wheel 53 to press against the outside of the end of the antenna through the wedge member 54. The feeding frame 512 pushes the two clamping plates 52 to clamp the outside of the end of the antenna through the connecting rod 513. The adjusting stud 515 abuts against the upper part of the pressure locking block 424.

[0080] The third step is to continue to move the wedge member 54 downward, so that the feeding frame 512 drives the two clamping plates 52 to straighten the end of the antenna to the left, and at the same time drives the pressing wheel 53 to roll against the end of the antenna, so as to press the end of the antenna against the contact of the circuit board, ensuring the welding quality.

[0081] The fourth step is that the welding torch 2 moves downward to abut against the contact on the side of the antenna and the circuit board away from the central column 3, so as to weld the end of the antenna and the contact on the side of the circuit board away from the central column 3 together. After welding is completed, move the welding torch 2 slightly upward, so that the welding torch 2 no longer contacts the antenna. After the welding flux solidifies, reset the welding torch 2 upward.

[0082] Step 5: Rotate the rotating substrate 41 for one full turn so that the rotating substrate 41 moves the circuit board with one contact welded and the antenna to the lower part of the soldering gun 2 again. During this process, the guide 435 drives the contact on the side of the circuit board close to the central column 3 to move directly below the soldering gun 2 by pushing the upper fixing column 431, and then move the soldering gun 2 downward again for soldering.

[0083] Step 6: Rotate the rotating substrate 41 to drive the circuit board with two contacts welded to move to the front of the central column 3. During this process, the slot part 434 moves along the other spiral groove of the guide groove 432 into the inner part of the lower annular groove of the guide groove 432, so that the two fixing columns 431 move downward to reset, and then the operator manually changes the material of the circuit board.

[0084] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention, and still be covered by the protection scope of the present invention.

Claims

1. An RFID antenna end pin soldering device, including a bottom plate, with a soldering gun arranged on the upper side of the bottom plate, characterized in that, A central column is fixedly installed at the center position on the upper side of the bottom plate. The device further includes a transposition mechanism for quickly switching welding points and a correction mechanism for correcting the end of the antenna. The transposition mechanism includes a rotating substrate rotatably arranged outside the central column. A plurality of material placing seats are arranged at equal intervals along the circumferential direction of the central column on the rotating substrate, and a pushing component for pushing the material placing seat to slide radially along the central column. When the rotating substrate rotates one week, the material placing seat located at the position of the welding torch drives the circuit board thereon to replace another welding point to directly below the welding torch. The correction mechanism includes two clamping plates and a pressing wheel arranged on the material placing seat through a moving component, and a wedge-shaped part fixedly installed on the right side of the welding torch. When the welding torch performs welding, the wedge-shaped part drives the clamping plates to first clamp on the front and back sides of the antenna through the moving component, and then move to the left to straighten the end of the antenna, and the pressing wheel presses down on the end of the antenna.

2. The RFID antenna end pin soldering device according to claim 1, characterized in that The rotating substrate is composed of a bearing plate rotatably arranged outside the central column and a plurality of U-shaped plates fixedly installed on the bearing plate at equal intervals along the circumferential direction of the central column. The material placing seat slides on the upper side of the horizontal section of the U-shaped plate.

3. The welding device for the end pins of an RFID antenna according to claim 1, characterized in that, Three clamping plates are slidably arranged on the material placing seat. Tension springs are arranged between the three clamping plates and the material placing seat. An unlocking part is slidably arranged up and down at the center position of the material placing seat. The unlocking part is hinged to the corresponding clamping plate through a telescopic square rod.

4. The RFID antenna end pin soldering device according to claim 1, characterized in that The pushing component includes a fixed column fixedly installed on the upper side of the central column. A guiding groove is opened on the outer side of the fixed column. A sliding plate is slidably arranged up and down on one side of the material placing seat close to the fixed column. A clamping groove part moving along the guiding groove is slidably arranged on one side of the sliding plate close to the fixed column along the length direction of the sliding plate.

5. The welding device for the end pins of an RFID antenna according to claim 4, wherein A guiding part is slidably arranged left and right on the upper side of the fixed column. The guiding part is locked to the fixed column through a fastening screw. Two protruding columns arranged symmetrically up and down are fixedly installed on one side of the sliding plate close to the fixed column. A pushing plate is fixedly installed at the right end of the upper side of the central column.

6. The welding device for the end pins of an RFID antenna according to claim 1, characterized in that The moving component includes a lifting frame slidably arranged up and down through a guiding rod on the side of the upper end of the material placing seat far from the central column. A feeding frame is slidably arranged radially along the central column on the lifting frame. The inner side of the feeding frame is hinged to the two clamping plates through two groups of connecting rods respectively.

7. The RFID antenna end pin soldering device according to claim 6, characterized in that, Two symmetrically arranged linkage brackets are slidably arranged up and down at the position corresponding to the connecting rod on the outer side of the feeding frame. The lower sides of the two linkage brackets are jointly rotatably connected to the pressing wheel. The pressing wheel is located between the two clamping plates. A spiral spring is arranged between the linkage bracket and the feeding frame.

8. A welding device for the end pins of an RFID antenna according to claim 6, characterized in that, A pressure locking block is hinged to the side of the upper end of the material placing seat far from the central column. An adjusting screw is threadedly connected to the lifting frame. The adjusting screw corresponds to the upper part of the position of the pressure locking block far from its hinge point. A torsion spring is arranged between the pressure locking block and the material placing seat.

9. The RFID antenna end pin soldering device according to claim 6, characterized in that, A round head column is slidably arranged on the feeding frame. A pushing spring is arranged between the round head column and the feeding frame. A hemispherical groove for inserting the round head column is opened on the lifting frame. Protruding blocks are fixedly installed on the cylindrical surface of the pressing wheel at equal intervals along its circumferential direction.

10. The RFID antenna end pin soldering device according to claim 6, wherein, A toothed square rod is slidably arranged on the side of the material placing seat far from the central column. A triangular block for extending into the tooth groove inside the toothed square rod is fixedly installed on the lifting frame. An L-shaped plate for pushing the toothed square rod towards the direction close to the central column is fixedly installed at the rear end on the upper side of the bottom plate.

Images