Circuit board soldering processing auxiliary mechanism

Abstract

The application relates to the technical field of circuit board welding, in particular to a circuit board welding processing auxiliary mechanism, which comprises a carrying table, a welding assembly and a welding wire feeding assembly, the carrying table is used for positioning a primary circuit board and a secondary circuit board to be welded, a gantry support is arranged directly above the carrying table, an extension electric cylinder is arranged on the gantry support, the welding assembly is driven up and down through the extension electric cylinder on the gantry support, a mounting table is fixedly connected to the side wall of the welding assembly, the welding wire feeding assembly is mounted on the mounting table, and the welding wire feeding assembly is used for conveying welding wire; the circuit board welding processing auxiliary mechanism is composed of the carrying table, the welding assembly and the welding wire feeding assembly, a primary positioning groove and a secondary positioning groove are arranged on the carrying table, so that the primary circuit board and the secondary circuit board can be conveniently positioned, and the primary taking groove and the secondary taking groove can facilitate workers to put and take the primary circuit board and the secondary circuit board.

Description

Technical Field

[0001] The present invention relates to the technical field related to circuit board welding, and in particular to a circuit board welding processing auxiliary mechanism. Background Art

[0002] Soft circuit board, also known as flexible circuit board, is a highly reliable and flexible printed circuit board made of polyimide or polyester film. It has the characteristics of high wiring density, light weight, thin thickness and good bendability.

[0003] The existing Chinese patent document with announcement number CN212217379U discloses a rapid welding mechanism for flexible circuit boards, which includes a linear movable platform, a jig, a protective atmosphere mechanism and a pressure plate mechanism. Multiple groups of flexible circuit boards are positioned on the jig, and a bracket assembly for supporting the jig is provided on the linear movable platform; the protective atmosphere mechanism includes a nozzle body, a protective atmosphere delivery pipeline, and a nozzle pushing mechanism. The nozzle pushing mechanism is installed on the bracket assembly, the protective atmosphere delivery pipeline is connected to the nozzle body, and the nozzle body is installed on the nozzle pushing mechanism so as to be inserted into the jig and inject protective atmosphere under the drive of the nozzle pushing mechanism; the pressure plate mechanism includes a pressure plate assembly and a pressure plate drive assembly, the pressure plate drive assembly is connected to the pressure plate assembly to drive the pressure plate assembly to move downward and press the flexible circuit board, and the pressure plate assembly is provided with through holes corresponding to the welding points of the flexible circuit board.

[0004] However, in the above scheme, each component used for welding is independently driven by a separate drive structure, which results in the need for multiple power units at the welding position, resulting in a relatively complex circuit structure of the equipment, which is inconvenient for staff to perform circuit inspection and maintenance. Therefore, the present invention proposes a circuit board welding processing auxiliary mechanism to solve the above problem. Summary of the Invention

[0005] The object of the present invention is to provide a circuit board welding processing auxiliary mechanism to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a circuit board welding processing auxiliary mechanism, comprising:

[0007] A loading platform, which is used to position the primary circuit board and the secondary circuit board to be welded, and a gantry bracket is provided just above the loading platform, on which a telescopic electric cylinder is provided;

[0008] A welding assembly, wherein the welding assembly is driven up and down by a telescopic electric cylinder on a gantry support, and a mounting platform is fixedly connected to the side wall of the welding assembly;

[0009] The welding wire feeding assembly is installed on the mounting table, and the welding wire feeding assembly is used to convey the welding wire, and the end of the conveyed welding wire corresponds to the position of the welding head on the welding assembly, and the welding point position of the primary circuit board and the secondary circuit board is located directly below the welding head.

[0010] Preferably, a primary positioning groove and a secondary positioning groove are provided on the loading platform, and the sizes of the primary positioning groove and the secondary positioning groove respectively match the sizes of the primary circuit board and the secondary circuit board. The primary circuit board and the secondary circuit board are respectively placed in the primary positioning groove and the secondary positioning groove during actual welding.

[0011] Preferably, a first-level pickup slot is provided at the outer side of the first-level positioning slot, and a second-level pickup slot is provided at the outer side of the second-level positioning slot.

[0012] Preferably, the welding wire feeding assembly includes a welding wire storage tube, a welding wire guide tube, a first auxiliary wire feeding mechanism and a second auxiliary wire feeding mechanism. The first auxiliary wire feeding mechanism and the second auxiliary wire feeding mechanism are used to automatically feed the welding wire forward. The first auxiliary wire feeding mechanism and the second auxiliary wire feeding mechanism have the same structure, and the first auxiliary wire feeding mechanism and the second auxiliary wire feeding mechanism are symmetrically arranged.

[0013] Preferably, the welding wire storage tube and the welding wire guide tube are coaxially arranged, and the welding wire storage tube and the welding wire guide tube are connected by a group of connecting frames, a mounting frame is fixedly installed on the connecting frame, a first-level guide hole is opened on the mounting platform, a first-level screw is fixedly connected to the mounting frame, a first-level limit nut is screwed and installed on the upper end of the first-level screw, a first-level support spring is sleeved and installed on the first-level screw, and when the first-level support spring is in a reset state, the end of the welding wire is located directly below the welding head, and the distance between the welding wire and the welding head is greater than two centimeters.

[0014] Preferably, a fixed force seat is fixedly installed on the loading platform, a first-level guide rod is fixedly installed between the front and rear ends of the connecting frame, the first auxiliary wire feeding mechanism includes a first-level movable frame, a second-level movable frame, a wire clamping seat and a movable force seat, a first-level movable frame is provided with a first-level guide rod hole, the first-level movable frame is movably installed on the first-level guide rod through the first-level guide rod hole, and one side wall of the first-level movable frame is arranged in contact with the side wall of the connecting frame, a first-level return spring is sleeved on the first-level guide rod, a second-level guide rod hole is provided on the second-level movable frame, a second-level guide rod is fixedly connected to the side of the first-level movable frame facing the second-level movable frame, the second-level guide rod is movably arranged in the second-level guide rod hole, and a second-level return spring is sleeved on the second-level guide rod.

[0015] Preferably, the movable force-bearing seat is fixedly connected to the first-level movable frame, and the movable force-bearing seat and the fixed force-bearing seat are both wedge-shaped block structures, and the inclined surface of the movable force-bearing seat is arranged corresponding to the inclined surface of the fixed force-bearing seat. The outer end of the movable force-bearing seat is provided with a force block groove and a force block groove, and the bottom of the force block groove is penetrated by a first-level pull rod groove, and the first-level movable frame is provided with a second-level pull rod groove, and the second-level movable frame is provided with a pull rod positioning groove. A force block is movably installed in the force block groove, and a pull rod is fixedly connected to the side wall of the force block. The pull rod passes through the first-level pull rod groove and the second-level pull rod groove, and the end of the pull rod is positioned in the pull rod positioning groove by a positioning screw.

[0016] Preferably, a force groove is provided on the force-bearing block, and the force groove is arranged corresponding to the force-bearing block groove. A force block is movably installed in the force-bearing block groove, and the force block is arranged through the force-bearing groove. A secondary screw groove is penetrated through the top surface of the force-bearing block groove, and the upper end surface of the force block is fixedly connected with a secondary screw. A three-stage return spring is sleeved on the secondary screw, and a secondary limit nut is screwed on the upper side end of the secondary screw. When the three-stage return spring is in a reset state, the end of the force block protrudes from the outside of the force block groove, and inclined surfaces are provided on the upper and lower sides of the force block, and the lower inclined surface of the force block is arranged parallel to the inclined surface of the movable force-bearing seat, and the upper inclined surface of the force block is matched with the inclined surface of the force groove.

[0017] Preferably, a hydraulic buffer is provided between the primary movable frame and the mounting frame.

[0018] Preferably, when the first-level movable frame reciprocates on the first-level guide rod, the force-applying block is always located above the inclined surface of the fixed force-bearing seat. When the telescopic electric cylinder is pressed down, the welding head on the welding assembly is pressed down, thereby melting the welding wire and completing the welding of the first-level circuit board and the second-level circuit board. At the same time, the force-applying block and the inclined surface of the fixed force-bearing seat are completely retracted into the force-applying block groove, and at this time, the force-bearing block moves outward under the action of the force-applying block, thereby driving the pull rod and the second-level movable frame to move, so that the wire clamping seat is opened to both sides, and the movable force-bearing seat and the fixed force-bearing seat are stressed, so that the movable The force seat, the first movable frame, the second movable frame and the wire clamping seat move in the direction away from the welding assembly, and when the telescopic electric cylinder moves in the return stroke, the welding assembly moves up, thereby separating the movable force seat from the fixed force seat, so that the force block loses the force of the fixed force seat, resulting in downward movement. At the same time, the second movable frame moves inward under the action of the second reset spring, thereby clamping the welding wire through the wire clamping seat, and under the action of the first reset spring, the movable force seat, the first movable frame, the second movable frame and the wire clamping seat are driven to move in the direction of the welding assembly, thereby realizing automatic loading of the welding wire.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. A circuit board welding processing auxiliary mechanism consisting of a stage, a welding assembly, and a welding wire feeding assembly is provided. A first-level positioning slot and a second-level positioning slot are provided on the stage to facilitate the positioning of the first-level and second-level circuit boards. The first-level and second-level retrieval slots are also provided to facilitate the placement and retrieval of the first-level and second-level circuit boards by the staff.

[0021] 2. By configuring the welding wire feeding assembly to be composed of a welding wire storage tube, a welding wire guide tube, a first auxiliary wire feeding mechanism, and a second auxiliary wire feeding mechanism, and configuring the first auxiliary wire feeding mechanism and the second auxiliary wire feeding mechanism to be composed of a first movable frame, a second movable frame, a wire clamping seat, and a movable force-bearing seat, and providing a fixed force-bearing seat on the stage, automatic feeding of the welding wire in the X-axis direction is achieved, and no other power source is required for feeding the welding wire, thereby effectively optimizing the power structure of the welding wire feeding assembly and facilitating daily circuit maintenance for staff;

[0022] 3. By arranging a force block and a force applying block on the movable force bearing seat, and forming a linkage with the secondary movable frame through a pull rod, the wire clamping seat can automatically clamp the welding wire, thereby further optimizing the power source structure of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention;

[0024] Figure 2 A half-section view of the stage of the present invention;

[0025] Figure 3 It is a schematic diagram of the structure of the welding assembly and the welding wire feeding assembly;

[0026] Figure 4 for Figure 3 A schematic diagram of the structure at center A;

[0027] Figure 5 This is a schematic diagram of the connection between the primary movable frame, the secondary movable frame, and the movable force-bearing seat of the present invention;

[0028] Figure 6 A half-section view of the first-level movable frame, the second-level movable frame, and the movable force-bearing seat of the present invention;

[0029] Figure 7 This is a schematic diagram of the distribution of the force-bearing block groove and the force-applying block groove of the present invention;

[0030] Figure 8 It is a half-section view of the load-bearing block of the present invention.

[0031] In the figure: loading platform 1, welding assembly 2, welding wire feeding assembly 3, primary positioning slot 4, secondary positioning slot 5, primary circuit board 6, secondary circuit board 7, primary removal slot 8, secondary removal slot 9, welding head 10, mounting platform 11, welding wire storage tube 12, welding wire guide tube 13, welding wire 14, a set of connecting frames 15, mounting frame 16, primary screw 17, primary limit nut 18, primary support spring 19, fixed force seat 20, primary guide rod 21, primary movable frame 22 , secondary movable frame 23, wire seat 24, movable force seat 25, primary guide rod hole 26, primary return spring 27, secondary guide rod hole 28, secondary guide rod 29, secondary return spring 30, force block groove 31, force block groove 32, secondary screw groove 33, primary pull rod groove 34, secondary pull rod groove 35, force block 36, pull rod 37, force groove 38, force block 39, secondary screw 40, tertiary return spring 41, secondary limit nut 42, hydraulic buffer 43. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] See also Figures 1-8 , the present invention provides the following three preferred embodiments:

[0034] Embodiment 1: A circuit board welding processing auxiliary mechanism includes a stage 1, a welding assembly 2 and a welding wire feeding assembly 3, the stage 1 is used to position the primary circuit board 6 and the secondary circuit board 7 to be welded, and a gantry bracket is provided directly above the stage 1, and a telescopic electric cylinder is provided on the gantry bracket. The welding assembly 2 is driven up and down by the telescopic electric cylinder on the gantry bracket, and a mounting table 11 is fixedly connected to the side wall of the welding assembly 2. The welding wire feeding assembly 3 is installed on the mounting table 11, and the welding wire feeding assembly 3 is used to convey the welding wire 14, and the end of the conveyed welding wire 14 corresponds to the position of the welding head 10 on the welding assembly 2, and the welding point positions of the primary circuit board 6 and the secondary circuit board 7 are located directly below the welding head 10.

[0035] A primary positioning groove 4 and a secondary positioning groove 5 are provided on the loading platform 1. The sizes of the primary positioning groove 4 and the secondary positioning groove 5 match the sizes of the primary circuit board 6 and the secondary circuit board 7 respectively. The primary circuit board 6 and the secondary circuit board 7 are placed in the primary positioning groove 4 and the secondary positioning groove 5 respectively during actual welding. A primary pickup groove 8 is provided on the outer edge of the primary positioning groove 4, and a secondary pickup groove 9 is provided on the outer edge of the secondary positioning groove 5. By setting a circuit board welding processing auxiliary mechanism composed of a loading platform 1, a welding assembly 2 and a welding wire feeding assembly 3, and providing a primary positioning groove 4 and a secondary positioning groove 5 on the loading platform 1, it is convenient to position the primary circuit board 6 and the secondary circuit board 7, and the setting of the primary pickup groove 8 and the secondary pickup groove 9 can facilitate the staff to place and take the primary circuit board 6 and the secondary circuit board 7.

[0036] Embodiment 2, on the basis of embodiment 1, the welding wire feeding assembly 3 includes a welding wire storage tube 12, a welding wire guide tube 13, a first auxiliary wire feeding mechanism and a second auxiliary wire feeding mechanism, the first auxiliary wire feeding mechanism and the second auxiliary wire feeding mechanism are used to automatically feed the welding wire 14 forward, the first auxiliary wire feeding mechanism and the second auxiliary wire feeding mechanism have the same structure, and the first auxiliary wire feeding mechanism and the second auxiliary wire feeding mechanism are symmetrically arranged, the welding wire storage tube 12 and the welding wire guide tube 13 are coaxially arranged, and the welding wire storage tube 1 2. The welding wire guide tubes 13 are connected by a group of connecting frames 15. A mounting frame 16 is fixedly installed on the connecting frame 15. A first-level guide hole is opened on the mounting platform 11. A first-level screw 17 is fixedly connected to the mounting frame 16. A first-level limit nut 18 is screwed and installed on the upper end of the first-level screw 17. A first-level support spring 19 is sleeved and installed on the first-level screw 17. When the first-level support spring 19 is in the reset state, the end of the welding wire 14 is located directly below the welding head 10, and the distance between the welding wire 14 and the welding head 10 is greater than two centimeters.

[0037] A fixed force seat 20 is fixedly installed on the loading platform 1, and a first-level guide rod 21 is fixedly installed between the front and rear ends of the connecting frame 15. The first auxiliary wire feeding mechanism includes a first-level movable frame 22, a second-level movable frame 23, a wire clamping seat 24 and a movable force seat 25. A first-level guide rod hole 26 is opened on the first-level movable frame 22. The first-level movable frame 22 is movably installed on the first-level guide rod 21 through the first-level guide rod hole 26, and one side wall of the first-level movable frame 22 is arranged in contact with the side wall of the connecting frame 15. A first-level return spring 27 is sleeved on the first-level guide rod 21, a second-level guide rod hole 28 is opened on the second-level movable frame 23, and a second-level guide rod 29 is fixedly connected to the side of the first-level movable frame 22 facing the second-level movable frame 23. 9 is movably arranged in the secondary guide rod hole 28, and the secondary guide rod 29 is sleeved with a secondary return spring 30. By setting the welding wire feeding assembly 3 to be composed of a welding wire storage tube 12, a welding wire guide tube 13, a first auxiliary wire feeding mechanism and a second auxiliary wire feeding mechanism, and the first auxiliary wire feeding mechanism and the second auxiliary wire feeding mechanism are both set to be composed of a primary movable frame 22, a secondary movable frame 23, a wire clamping seat 24 and a movable force-bearing seat 25, and a fixed force-bearing seat 20 is set on the workbench 1, thereby realizing automatic feeding of the welding wire 14 in the X-axis direction, and the feeding of the welding wire 14 does not require other power sources, thereby effectively optimizing the power structure of the welding wire feeding assembly 3, so as to facilitate the staff to carry out daily circuit maintenance.

[0038] Embodiment 3. On the basis of embodiment 2, the movable force-bearing seat 25 is fixedly connected to the first-level movable frame 22. The movable force-bearing seat 25 and the fixed force-bearing seat 20 are both wedge-shaped block structures, and the inclined surface of the movable force-bearing seat 25 is arranged corresponding to the inclined surface of the fixed force-bearing seat 20. The outer end of the movable force-bearing seat 25 is provided with a force block groove 31 and a force block groove 32. The bottom of the force block groove 31 is penetrated by a first-level pull rod groove 34. The first-level movable frame 22 is provided with a second-level pull rod groove 35. The second-level movable frame 23 is provided with a pull rod positioning groove. A force block 36 is movably installed in the force block groove 31. A pull rod 37 is fixedly connected to the side wall of the force block 36. The pull rod 37 passes through the first-level pull rod groove 34 and the second-level pull rod groove 35, and the end of the pull rod 37 is positioned in the pull rod positioning groove by a positioning screw.

[0039] A force groove 38 is provided on the force block 36, and the force groove 38 is arranged corresponding to the force block groove 32. A force block 39 is movably installed in the force block groove 32, and the force block 39 passes through the force groove 38. The top surface of the force block groove 32 is penetrated by a secondary screw groove 33. The upper end surface of the force block 39 is fixedly connected to the secondary screw 40, and a three-stage return spring 41 is sleeved and installed on the secondary screw 40, and the upper side end of the secondary screw 40 is screwed and installed with a secondary limit nut 42. When the three-stage return spring 41 is in the reset state, the end of the force block 39 protrudes from the outside of the force block groove 32, and the upper and lower sides of the force block 39 are provided with inclined surfaces, and the lower side inclined surface of the force block 39 is arranged parallel to the inclined surface of the movable force seat 25, and the upper side inclined surface of the force block 39 is matched with the inclined surface of the force groove 38.

[0040] A hydraulic buffer 43 is arranged between the first-level movable frame 22 and the mounting frame 16. By arranging a force block 36 and a force-applying block 39 on the movable force-bearing seat 25, and forming a linkage with the second-level movable frame 23 through the pull rod 37, the wire clamping seat 24 can automatically clamp the welding wire 14, thereby further optimizing the power source structure of the device.

[0041] When the first-level movable frame 22 reciprocates on the first-level guide rod 21, the force block 39 is always located above the inclined surface of the fixed force-bearing seat 20. When the telescopic electric cylinder is pressed down, the welding head 10 on the welding assembly 2 is pressed down, thereby melting the welding wire 14 and completing the welding of the first-level circuit board 6 and the second-level circuit board 7. At the same time, the force block 39 and the inclined surface of the fixed force-bearing seat 20 are completely retracted into the force block groove 32. At this time, the force block 36 moves outward under the action of the force block 39, thereby driving the pull rod 37 and the second-level movable frame 23 to move, so that the wire clamping seat 24 is opened to both sides, and the movable force-bearing seat 25 and the fixed force-bearing seat 20 are subjected to force, so that the movable force-bearing seat 25 and the first-level movable frame 22 are opened to both sides. The frame 22, the secondary movable frame 23, and the wire holder 24 move in the direction away from the welding assembly 2, and when the telescopic electric cylinder moves in the return stroke, the welding assembly 2 moves up, thereby separating the movable force seat 25 from the fixed force seat 20, so that the force block 39 loses the force of the fixed force seat 20, thereby moving downward. At the same time, the secondary movable frame 23 moves inward under the action of the secondary return spring 30, thereby clamping the welding wire 14 through the wire holder 24, and drives the movable force seat 25, the primary movable frame 22, the secondary movable frame 23, and the wire holder 24 to move toward the welding assembly 2 under the action of the primary return spring 27, thereby realizing automatic loading of the welding wire 14.

[0042] Although the above describes the illustrative specific embodiments of the present application so that those skilled in the art can understand the present application, the present application is not limited to the scope of the specific embodiments. For those skilled in the art, as long as various changes are within the spirit and scope of the present application defined and determined by the attached claims, all application creations based on the concept of the present application are protected.

Claims

1. A circuit board welding processing auxiliary mechanism, characterized in that: include: A loading platform (1), the loading platform (1) is used to position the primary circuit board (6) and the secondary circuit board (7) to be welded, and a gantry bracket is provided directly above the loading platform (1), and a telescopic electric cylinder is provided on the gantry bracket; A welding assembly (2), the welding assembly (2) being driven up and down by a telescopic electric cylinder on a gantry support, and a mounting platform (11) being fixedly connected to a side wall of the welding assembly (2); A welding wire feeding assembly (3), wherein the welding wire feeding assembly (3) is mounted on a mounting platform (11), and the welding wire feeding assembly (3) is used to feed welding wire (14), and the end of the fed welding wire (14) corresponds to the position of the welding head (10) on the welding assembly (2), and the welding point positions of the primary circuit board (6) and the secondary circuit board (7) are located directly below the welding head (10); The welding wire feeding assembly (3) comprises a welding wire storage tube (12), a welding wire guide tube (13), a first auxiliary wire feeding mechanism and a second auxiliary wire feeding mechanism, wherein the first auxiliary wire feeding mechanism and the second auxiliary wire feeding mechanism are used to automatically feed the welding wire (14) forward, the first auxiliary wire feeding mechanism and the second auxiliary wire feeding mechanism have the same structure, and the first auxiliary wire feeding mechanism and the second auxiliary wire feeding mechanism are symmetrically arranged; The welding wire storage tube (12) and the welding wire guide tube (13) are coaxially arranged, and the welding wire storage tube (12) and the welding wire guide tube (13) are connected by a set of connecting frames (15). A mounting frame (16) is fixedly mounted on the connecting frame (15). A first-level guide hole is opened on the mounting platform (11). A first-level screw (17) is fixedly connected to the mounting frame (16). A first-level limiting nut (18) is screwed and mounted on the upper end of the first-level screw (17). A first-level support spring (19) is sleeved and mounted on the first-level screw (17). A fixed force-bearing seat (20) is fixedly installed on the loading platform (1), a first-level guide rod (21) is fixedly installed between the front and rear ends of the connecting frame (15), the first auxiliary wire feeding mechanism includes a first-level movable frame (22), a second-level movable frame (23), a wire clamping seat (24) and a movable force-bearing seat (25), a first-level guide rod hole (26) is opened on the first-level movable frame (22), the first-level movable frame (22) is movably installed on the first-level guide rod (21) through the first-level guide rod hole (26), and the first-level movable frame (22) is movably installed on the first-level guide rod (21) through the first-level guide rod hole (26). One side wall of the movable frame (22) is arranged to be in contact with the side wall of the connecting frame (15); a first-level return spring (27) is sleeved on the first-level guide rod (21); a second-level guide rod hole (28) is opened on the second-level movable frame (23); a second-level guide rod (29) is fixedly connected to the first-level movable frame (22) on one side facing the second-level movable frame (23); the second-level guide rod (29) is movably arranged in the second-level guide rod hole (28), and a second-level return spring (30) is sleeved on the second-level guide rod (29); The movable force-bearing seat (25) is fixedly connected to the first-level movable frame (22), and the movable force-bearing seat (25) and the fixed force-bearing seat (20) are both wedge-shaped block structures, and the inclined surface of the movable force-bearing seat (25) is arranged corresponding to the inclined surface of the fixed force-bearing seat (20), and the outer end of the movable force-bearing seat (25) is provided with a force block groove (31) and a force block groove (32), and the bottom of the force block groove (31) is penetrated by a first-level pull rod groove (34), the first-level movable frame (22) is provided with a second-level pull rod groove (35), and the second-level movable frame (23) is provided with a pull rod positioning groove, a force block (36) is movably installed in the force block groove (31), and a pull rod (37) is fixedly connected to the side wall of the force block (36), and the pull rod (37) passes through the first-level pull rod groove (34) and the second-level pull rod groove (35), and the end of the pull rod (37) is positioned in the pull rod positioning groove by a positioning screw; The force block (36) is provided with a force groove (38), and the force groove (38) is arranged corresponding to the force block groove (32). A force block (39) is movably installed in the force block groove (32), and the force block (39) is arranged through the force groove (38). The top surface of the force block groove (32) is penetrated by a secondary screw groove (33), and the upper end surface of the force block (39) is fixedly connected to a secondary screw (40), and a three-stage reset screw (40) is sleeved on the secondary screw (40). The spring (41) is provided, and the upper end of the secondary screw (40) is screwed with a secondary limiting nut (42). When the third-stage reset spring (41) is in the reset state, the end of the force block (39) protrudes outside the force block groove (32). The upper and lower sides of the force block (39) are provided with inclined surfaces, and the lower inclined surface of the force block (39) is arranged parallel to the inclined surface of the movable force seat (25). The upper inclined surface of the force block (39) is arranged to match the inclined surface of the force groove (38).

2. A circuit board welding processing auxiliary mechanism according to claim 1, characterized in that: The loading platform (1) is provided with a primary positioning groove (4) and a secondary positioning groove (5). The sizes of the primary positioning groove (4) and the secondary positioning groove (5) respectively match the sizes of the primary circuit board (6) and the secondary circuit board (7). The primary circuit board (6) and the secondary circuit board (7) are respectively placed in the primary positioning groove (4) and the secondary positioning groove (5) during actual welding.

3. A circuit board welding processing auxiliary mechanism according to claim 2, characterized in that: A first-level pickup slot (8) is provided at the outer side of the first-level positioning slot (4), and a second-level pickup slot (9) is provided at the outer side of the second-level positioning slot (5).

4. The circuit board welding processing auxiliary mechanism according to claim 1, characterized in that: When the primary support spring (19) is in a reset state, the end of the welding wire (14) is located directly below the welding head (10), and the distance between the welding wire (14) and the welding head (10) is greater than two centimeters.

5. A circuit board welding auxiliary mechanism according to claim 4, characterized in that: A hydraulic buffer (43) is provided between the primary movable frame (22) and the mounting frame (16).

6. The circuit board welding auxiliary mechanism according to claim 5, characterized in that: When the first-level movable frame (22) reciprocates on the first-level guide rod (21), the force block (39) is always located above the inclined surface of the fixed force-bearing seat (20). When the telescopic electric cylinder is pressed down, the welding head (10) on the welding assembly (2) is pressed down, thereby melting the welding wire (14) and completing the welding of the first-level circuit board (6) and the second-level circuit board (7). At the same time, the force block (39) and the inclined surface of the fixed force-bearing seat (20) are completely retracted into the force block groove (32). At this time, the force block (36) moves outward under the action of the force block (39), thereby driving the pull rod (37) and the second-level movable frame (23) to move, thereby allowing the wire clamping seat (24) to open to both sides, and the movable force-bearing seat (25) and the fixed force-bearing seat (20) are stressed, thereby allowing the movable force-bearing seat (25) to open to both sides. ), the first movable frame (22), the second movable frame (23), and the wire holder (24) move in a direction away from the welding assembly (2), and when the telescopic electric cylinder moves in the return stroke, the welding assembly (2) moves up, thereby separating the movable force-bearing seat (25) from the fixed force-bearing seat (20), so that the force block (39) loses the force of the fixed force-bearing seat (20), thereby moving down. At the same time, the second movable frame (23) moves inward under the action of the second reset spring (30), thereby clamping the welding wire (14) through the wire holder (24), and drives the movable force-bearing seat (25), the first movable frame (22), the second movable frame (23), and the wire holder (24) to move in the direction of the welding assembly (2) under the action of the first reset spring (27), thereby realizing automatic feeding of the welding wire (14).

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