Welding, heating and positioning jig for testing PCBA (Printed Circuit Board Assembly)

Abstract

The utility model discloses a testing PCBA welding heating positioning jig, and particularly relates to the technical field of positioning jigs, the testing PCBA welding heating positioning jig comprises a PCBA welding table, the top of the PCBA welding table is provided with a clamping positioning mechanism, and the clamping positioning mechanism is composed of two symmetrically arranged clamping assemblies installed on the top of the PCBA welding table. Air cylinders are connected to the positions, located on the outer sides of the two clamping assemblies, of the tops of the two ends of the PCBA welding table, the output ends of the two air cylinders are fixedly connected with the outer walls of the two clamping assemblies correspondingly, the output directions of the two air cylinders are horizontally arranged, and a control switch is arranged on the outer wall of the PCBA welding table. According to the PCBA welding fixture, the heating effect can be conveniently achieved during PCBA welding, the PCBA can be transversely and longitudinally clamped during use, and meanwhile the PCBA welding fixture can adapt to PCBA of different sizes and specifications to be adjusted and used during use.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning fixtures, and more specifically, to a testing PCBA welding heating positioning fixture. Background Art

[0002] With the rapid development of electronic technology, printed circuit board assembly (PCBA) plays a vital role in various electronic devices. In the manufacturing process of PCBA, welding is a key step, which directly affects the performance and reliability of the circuit board. Before welding, the circuit board needs to be clamped and positioned using a positioning fixture to facilitate subsequent welding.

[0003] After searching, a Chinese patent with publication number CN218745416U discloses a precise positioning fixture for PCBA boards. The threaded rod is driven to rotate by rotating the rotating rod. During the rotation process, the threaded rod applies a spiral thrust to the connecting block, so that the connecting block drives the support plate to move, and the support plate drives the PCBA board clamped by the clamping assembly at its top to move, thereby precisely adjusting the position of the PCBA board.

[0004] When the above-mentioned positioning fixture is actually used, it can only realize lateral clamping and adjustment, and lacks longitudinal clamping and adjustment. When the longitudinal length exceeds the length of its clamping plate, the clamping position can only be clamped horizontally. The one-way clamping cannot guarantee effective stability during the welding process. Therefore, it is necessary to improve the problems in this aspect. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a testing PCBA welding heating positioning fixture.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a testing PCBA welding heating positioning fixture, comprising a PCBA welding table, a clamping positioning mechanism is arranged on the top of the PCBA welding table, the clamping positioning mechanism is composed of two symmetrically arranged clamping components installed on the top of the PCBA welding table, the tops of both ends of the PCBA welding table are located on the outsides of the two clamping components and are connected with cylinders, the output ends of the two cylinders are respectively fixedly connected to the outer walls of the two clamping components, and the output directions of the two cylinders are arranged horizontally, the outer wall of the PCBA welding table is provided with a control switch, and a heat conducting coil is installed inside the center of the PCBA welding table between the two clamping components, both ends of the heat conducting coil extend to the outside of the PCBA welding table and are provided with ports, the outer wall of the PCBA welding table is provided with a heat conducting air box, and a connecting pipe is connected between the heat conducting air box and one of the ports.

[0007] As a further improvement of the technical solution of the utility model, the two clamping assemblies both include a movable clamping seat arranged above the PCBA welding table, the inner sides of the two end portions of the movable clamping seat are connected to adjusting rods, the ends of the two adjusting rods are fixedly connected to end plates, the outer wall of the movable clamping seat is fixedly connected to a fixing frame fixedly connected to the output end of the cylinder, a bidirectional screw parallel to the adjusting rod is connected between the two inner walls of the fixing frame, the external threads at the two ends of the bidirectional screw are arranged in opposite directions, a servo motor for driving the bidirectional screw to rotate is installed on the outer wall of the fixing frame, the external threads at the two ends of the bidirectional screw are connected to connecting seats, and the ends of the two connecting seats are respectively fixedly connected to the outer walls of the ends of the two adjusting rods.

[0008] As a further improvement of the technical solution of the utility model, a first rubber pad is bonded to the inner side wall of the movable clamp seat, and a second rubber pad is bonded to the inner side wall of the end plate.

[0009] As a further improvement of the technical solution of the utility model, the interior of the movable clamp seat is provided with an active cavity for adjusting the telescopic activity of the rod, and the outer wall of the movable clamp seat is provided with an active groove in the horizontal direction corresponding to the outside of the connecting seat, and the active groove is connected to the active cavity.

[0010] As a further improvement of the technical solution of the utility model, the servo motor is fixedly connected to the outer wall of the fixing frame by bolts, a bearing seat is provided at the end position of the inner wall of the fixing frame corresponding to the bidirectional screw, and a T-shaped block is provided at the bottom end of the fixing frame, and a T-shaped slide groove is provided at the top of the PCBA welding table corresponding to the outside of the T-shaped block in the horizontal direction.

[0011] As a further improvement of the technical solution of the utility model, a wind hood connected to the end of the connecting pipe is installed inside the heat-conducting wind box, and a fan is installed inside the heat-conducting wind box on one side of the wind hood, and an electric heater is installed between the fan and the wind hood.

[0012] As a further improvement of the technical solution of the utility model, an air guide hole is provided on the outer wall of the heat-conducting air box on the side close to the fan, and a cavity for installing the heat-conducting coil is provided inside the PCBA welding station.

[0013] Beneficial effects of the utility model:

[0014] 1. By setting a clamping and positioning mechanism, when in use, the piston rod of the control cylinder is extended to push the two clamping components to move inward, so as to gradually begin to clamp the PCBA board horizontally. After clamping, the servo motor is controlled to drive the bidirectional screw to rotate, so as to control the two adjustment rods to contract, and the two end plates are used to clamp the PCBA board longitudinally. The rubber pad can play a buffering role in the clamping process and play a protective role. Since the adjustment rod can be easily controlled to retract, it can be adjusted to adapt to PCBA boards of different sizes when in use;

[0015] 2. When in use, place the PCBA board to be processed on the top center of the PCBA welding table, and then start the fan and electric heater. The fan compresses the external air and introduces the heat energy generated by the electric heater into the heat conduction coil inside the PCBA welding table to achieve the heating effect. The other port of the heat conduction coil can be connected to other pipes for heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 It is a structural schematic diagram of the clamping assembly in the utility model.

[0018] Figure 3 It is a cross-sectional view of the clamping assembly in the present utility model.

[0019] Figure 4 It is a schematic diagram of the internal structure of the heat conduction air box in the utility model.

[0020] The accompanying drawings are marked as follows: 1. PCBA welding table; 2. Clamping assembly; 3. Cylinder; 4. T-shaped slide; 5. Control switch; 6. Heat transfer coil; 7. Heat transfer bellows; 8. Port; 9. Connecting pipe; 10. Wind hood; 11. Fan; 12. Electric heater; 201. Movable clamp seat; 202. First rubber pad; 203. Adjusting rod; 204. End plate; 205. Second rubber pad; 206. Movable cavity; 207. Fixing frame; 208. Bidirectional screw; 209. Servo motor; 210. Connecting seat; 211. Movable slot; 212. T-shaped block; 701. Air guide hole. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] As attached Figure 1-4 A test PCBA welding heating positioning fixture shown includes a PCBA welding table 1, a clamping and positioning mechanism is arranged on the top of the PCBA welding table 1, and the clamping and positioning mechanism is composed of two symmetrically arranged clamping components 2 installed on the top of the PCBA welding table 1, and cylinders 3 are connected to the tops of both ends of the PCBA welding table 1, which are located on the outsides of the two clamping components 2, and the output ends of the two cylinders 3 are respectively fixedly connected to the outer walls of the two clamping components 2, and the output directions of the two cylinders 3 are arranged horizontally, and a control switch 5 is arranged on the outer wall of the PCBA welding table 1, and a heat conducting coil 6 is installed inside the center of the PCBA welding table 1 between the two clamping components 2, and both ends of the heat conducting coil 6 extend to the outside of the PCBA welding table 1 and are provided with ports 8, and a heat conducting air box 7 is installed on the outer wall of the PCBA welding table 1, and a connecting pipe 9 is connected between the heat conducting air box 7 and one of the ports 8.

[0023] Among them, Figure 1 The middle heat transfer coil 6 is indicated by a dotted line as being installed inside the PCBA soldering station 1 rather than on the surface.

[0024] As attached Figure 1-3 As shown, the two clamping assemblies 2 both include a movable clamping seat 201 arranged above the PCBA welding table 1, the inner sides of the two end portions of the movable clamping seat 201 are connected with adjusting rods 203, the ends of the two adjusting rods 203 are fixedly connected with end plates 204, the outer wall of the movable clamping seat 201 is fixedly connected with a fixing frame 207 fixedly connected to the output end of the cylinder 3, a bidirectional screw 208 parallel to the adjusting rod 203 is connected between the two inner walls of the fixing frame 207, the two ends of the bidirectional screw 208 are arranged in opposite directions, a servo motor 209 for driving the bidirectional screw 208 to rotate is installed on the outer wall of the fixing frame 207, the external threads of the two ends of the bidirectional screw 208 are externally connected with connecting seats 210, the ends of the two connecting seats 210 are respectively fixedly connected to the outer walls of the ends of the two adjusting rods 203, wherein the inner wall of the movable clamping seat 201 A first rubber pad 202 is bonded thereto, a second rubber pad 205 is bonded to the inner wall of the end plate 204, an active cavity 206 for adjusting the telescopic activity of the adjustment rod 203 is provided inside the active clamp seat 201, and an active groove 211 is provided in the horizontal direction on the outer wall of the active clamp seat 201 corresponding to the outer side of the connecting seat 210, the active groove 211 is communicated with the active cavity 206, the servo motor 209 is fixedly connected to the outer wall of the fixing frame 207 by bolts, a bearing seat is provided at the end position of the bidirectional screw 208 on the inner wall of the fixing frame 207 corresponding to the end, and a T-shaped block 212 is provided at the bottom end of the fixing frame 207, a T-shaped slide groove 4 is provided in the horizontal direction on the top of the PCBA welding platform 1 corresponding to the outer side of the T-shaped block 212, and the two clamping components 2 provided together constitute a clamping positioning mechanism for testing the PCBA welding positioning operation.

[0025] As attached Figure 1 and attached Figure 4 As shown, a wind hood 10 connected to the end of the connecting pipe 9 is installed inside the heat-conducting wind box 7, and a fan 11 is installed inside the heat-conducting wind box 7 on one side of the wind hood 10, and an electric heater 12 is installed between the fan 11 and the wind hood 10 to generate heat energy during use and introduce it to the bottom of the clamping position for heating treatment.

[0026] As attached Figure 1 and attached Figure 4 As shown, an air guide hole 701 is provided on the outer wall of the heat conduction air box 7 near the fan 11 , and a cavity for installing the heat conduction coil 6 is provided inside the PCBA welding platform 1 .

[0027] Working principle: This utility model designs a test PCBA welding heating positioning fixture, the specific structure is as shown in the attached manual Figure 1-4 As shown, when the present technical solution is used, the PCBA board to be processed is placed at the top center of the PCBA welding table 1, and then the fan 11 and the electric heater 12 are started. The fan 11 compresses the external air and introduces the heat energy generated by the electric heater 12 into the heat-conducting coil 6 inside the PCBA welding table 1 to achieve a heating effect. The other port of the heat-conducting coil 6 can be externally connected to other pipes for heating. Then, the piston rod of the control cylinder 3 is extended to push the two clamping assemblies 2 to move inward, thereby gradually starting to clamp the PCBA board laterally. After clamping, the servo motor 209 is controlled to run and drive the bidirectional screw 208 to rotate, thereby controlling the two adjusting rods 203 to contract, and the two end plates 204 are used to clamp the PCBA board longitudinally. The rubber pad can act as a buffer during the clamping process and has a protective effect. Since the adjusting rod 203 can be easily controlled to retract, it can be adjusted to PCBA boards of different sizes during use.

[0028] Among them, the drawings of the embodiments disclosed in the present utility model only involve structures related to the embodiments disclosed in the present utility model, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0029] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A PCBA welding heating and positioning jig for testing, comprising a PCBA welding table (1), characterized in that: A clamping and positioning mechanism is arranged on the top of the PCBA welding platform (1), and the clamping and positioning mechanism is composed of two symmetrically arranged clamping assemblies (2) installed on the top of the PCBA welding platform (1). The tops of both ends of the PCBA welding platform (1) are located outside the two clamping assemblies (2) and are connected to cylinders (3). The output ends of the two cylinders (3) are respectively fixedly connected to the outer walls of the two clamping assemblies (2), and the output directions of the two cylinders (3) are arranged horizontally. A control switch (5) is arranged on the outer wall of the PCBA welding platform (1), and a heat conducting coil (6) is installed at the center of the PCBA welding platform (1) between the two clamping assemblies (2). Both ends of the heat conducting coil (6) extend to the outside of the PCBA welding platform (1) and are provided with ports (8). A heat conducting air box (7) is installed on the outer wall of the PCBA welding platform (1), and a connecting pipe (9) is connected between the heat conducting air box (7) and one of the ports (8).

2. A PCBA welding heating and positioning jig for testing according to claim 1, characterized in that: The two clamping assemblies (2) each comprise a movable clamping seat (201) arranged above the PCBA welding table (1); the inner sides of both ends of the movable clamping seat (201) are connected to adjusting rods (203); the ends of the two adjusting rods (203) are fixedly connected to end plates (204); the outer wall of the movable clamping seat (201) is fixedly connected to a fixing frame (207) fixedly connected to the output end of the cylinder (3); a bidirectional screw (208) parallel to the adjusting rod (203) is connected between the two inner walls of the fixing frame (207); the external threads of the two ends of the bidirectional screw (208) are arranged in opposite directions; a servo motor (209) for driving the bidirectional screw (208) to rotate is installed on the outer wall of the fixing frame (207); the external threads of the two ends of the bidirectional screw (208) are externally connected to a connecting seat (210); the ends of the two connecting seats (210) are respectively fixedly connected to the outer walls of the ends of the two adjusting rods (203).

3. A PCBA welding heating and positioning jig for testing according to claim 2, characterized in that: A first rubber pad (202) is bonded to the inner side wall of the movable clamp seat (201), and a second rubber pad (205) is bonded to the inner side wall of the end plate (204).

4. A PCBA welding heating and positioning jig for testing according to claim 2, characterized in that: The movable clamp seat (201) is provided with an active cavity (206) for adjusting the telescopic movement of the rod (203) inside, and an active groove (211) is provided on the outer wall of the movable clamp seat (201) along the horizontal direction corresponding to the outside of the connecting seat (210), and the active groove (211) is connected to the active cavity (206).

5. A PCBA welding heating and positioning jig for testing according to claim 2, characterized in that: The servo motor (209) is fixedly connected to the outer wall of the fixing frame (207) by bolts, a bearing seat is arranged at the inner wall of the fixing frame (207) corresponding to the end position of the bidirectional screw (208), and a T-shaped clamping block (212) is arranged at the bottom end of the fixing frame (207), and a T-shaped sliding groove (4) is arranged at the top of the PCBA welding platform (1) corresponding to the outside of the T-shaped clamping block (212) in the horizontal direction.

6. A PCBA welding heating and positioning jig for testing according to claim 1, characterized in that: A wind hood (10) connected to the end of the connecting pipe (9) is installed inside the heat-conducting wind box (7), and a fan (11) is installed inside the heat-conducting wind box (7) on one side of the wind hood (10), and an electric heater (12) is installed between the fan (11) and the wind hood (10).

7. A PCBA welding heating and positioning jig for testing according to claim 1, characterized in that: An air guide hole (701) is provided on the outer wall of the heat-conducting air box (7) on a side close to the fan (11), and a cavity for installing the heat-conducting coil (6) is provided inside the PCBA welding platform (1).

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