Adjustable circuit board welding clamp

Abstract

An adjustable circuit board welding clamp comprises a base, two mounting plates arranged on the base and clamp assemblies arranged on the inner side faces of the mounting plates, a transverse position adjusting device is arranged on the base, and the two mounting plates are both arranged on the transverse position adjusting device and can be close to or away from each other in the opposite directions along the transverse position adjusting device; the clamp assembly comprises a rotating device and a clamping device arranged on the rotating device, the rotating device comprises a mounting block and a locking piece, a limiting groove is formed in the outer side face of the mounting block, a plurality of balls are embedded in the side wall of the limiting groove, and the locking piece is arranged in the positioning hole in a penetrating mode and extends into the limiting groove; a rotating head is arranged at the inner side end of the clamping device, and the rotating head is embedded in the limiting groove and can rotate in the limiting groove; and a clamping part is arranged on the other side of the clamping device. The device is high in practicability and has high popularization significance.

Description

Technical Field

[0001] The utility model relates to a circuit board clamp, in particular to an adjustable circuit board welding clamp. Background Art

[0002] Printed circuit boards, also known as printed circuit boards, are providers of electrical connections for electronic components. The main advantage of using circuit boards is that they greatly reduce wiring and assembly errors, and improve the level of automation and production labor rate. When welding, circuit boards need to be fixed by fixtures. During the welding process of electronic components, especially some precision components, welding is usually required from different angles. After the existing fixtures are clamped, the welding angle cannot be adjusted or is difficult to adjust, and the convenience of use is poor. Utility Model Content

[0003] Based on this, it is necessary to provide an adjustable circuit board welding fixture to address the deficiencies in the prior art.

[0004] An adjustable circuit board welding fixture comprises a base, two mounting plates mounted on the base and a fixture assembly mounted on the inner side of the mounting plate, the base is provided with a lateral positioning device, the two mounting plates are mounted on the lateral positioning device and can move closer to or farther away from each other along the lateral positioning device; a guide rail extending in the up-and-down direction is provided on the inner surface of the mounting plate, a fixed plate is movably mounted on the guide rail; the fixture assembly comprises a rotating device and a clamping device mounted on the rotating device, the rotating device is arranged on the fixed plate, the rotating device comprises a mounting block and a locking piece, the mounting block is mounted on the fixed plate, a limited locking piece is provided on the outer side surface of the mounting block The limiting groove is arranged in a spherical shape, and a plurality of ball grooves are arranged on the side wall of the limiting groove, in which balls are embedded, and the balls can rotate in the ball grooves; a positioning hole is arranged on the outer side surface of the mounting block, and the positioning is connected to the limiting groove; the locking piece is passed through the positioning hole and extends into the limiting groove; a rotating head is arranged at the inner side end of the clamping device, and the rotating head is embedded in the limiting groove and can rotate in the limiting groove; a clamping part is arranged on the other side of the clamping device, and the clamping part includes a lower limiting block and an upper limiting block, and a limiting bolt is arranged on the upper limiting block, and the limiting bolt moves spirally up and down.

[0005] Furthermore, the lateral positioning device includes a positioning rod and an adjusting head arranged outside the positioning rod; the positioning rod passes through two opposite side surfaces of the base and two mounting plates, and the extension direction of the positioning rod is consistent with the arrangement direction of the two mounting plates.

[0006] Furthermore, the adjustment rod is provided with a first thread segment and a second thread segment, and the spiral directions of the first thread segment and the second thread segment are opposite.

[0007] Furthermore, two pillars are provided at the lower end of the mounting plate, and a limit plate is installed at the bottom end of the pillar. The limit plate is installed on the two pillars by bolts. Screw holes are provided on the limit plate, and the adjustment rod is screwed into the corresponding screw holes.

[0008] Furthermore, a blowing device is arranged in the base, a top plate is arranged on the top of the base, and a plurality of through holes are arranged on the top plate; the blowing device blows air from bottom to top toward the through holes.

[0009] Furthermore, the top plate is also provided with a long adjustment hole, which extends along the arrangement direction of the two mounting plates, and the bottom end of the mounting plate extends into the long adjustment hole and can move along the long adjustment hole.

[0010] Furthermore, a cylinder is installed at the top of the mounting plate, and a gas rod is extended downward from the cylinder, and the bottom end of the gas rod is installed at the top of the fixed plate; the cylinder can drive the fixed plate to move up and down along the guide rail.

[0011] Furthermore, the locking element includes a screw and a spiral head arranged at one end of the screw, and a buffer head is arranged at the other end of the screw, and the end surface of the buffer head is arranged in an inwardly concave arc shape.

[0012] Furthermore, the end curvature of the buffer head matches the curvature of the outer surface of the rotating head.

[0013] In summary, the welding fixture of the utility model is provided with a rotating device, a rotating head, a fixed block that can move up and down, and two mounting blocks that move closer or farther away from each other; each part is combined; so that the circuit board can be rotated at multiple angles such as tilting forward and backward, tilting left and right, etc., thereby improving the convenience of welding. The setting of the blowing device can cool the circuit board, and blowing air through multiple through holes improves the uniformity of cooling. The utility model is highly practical and has a strong promotion significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a diagram of the use state of an adjustable circuit board welding fixture of the utility model;

[0015] Figure 2 for Figure 1 Schematic diagram of the structure of the middle fixture;

[0016] Figure 3 for Figure 2 A side view of the middle fixture and a partial internal structure diagram;

[0017] Figure 4 for Figure 2 A partially enlarged structural schematic diagram of the clamping device;

[0018] Figure 5 for Figure 3 Schematic diagram of the structure of the middle side mounting plate. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0020] like Figures 1 to 5 As shown in the figure, an adjustable circuit board welding fixture provided by the utility model comprises a base 10, two mounting plates 20 and two clamp assemblies 30. The two mounting plates 20 are installed side by side and spaced apart on the top surface of the base 10, and the two mounting plates 20 can move closer to or farther from each other. The two clamp assemblies 30 are respectively arranged on the opposite sides of the two mounting plates 20, and the circuit board 100 is clamped between the two clamp assemblies 30.

[0021] The base 10 is provided with a blowing device, and a top plate 11 is provided on the top of the base 10, and a plurality of through holes are provided on the top plate 11. The blowing device blows air from bottom to top, and the air is blown out from the through holes. The top plate 11 is also provided with a long adjustment hole 111, and the long adjustment hole 111 extends along the arrangement direction of the two mounting plates 20. The bottom end of the mounting plate 20 extends into the long adjustment hole 111 and can move along the long adjustment hole 111. The base 10 is also provided with a lateral adjustment device, and the lateral adjustment device includes an adjustment rod 12 and an adjustment head 13 provided at the outer end of the adjustment rod 12. The adjustment rod 12 passes through two opposite side surfaces of the base 10, and the adjustment rod 12 is located below the top plate 11, and the extension direction of the adjustment rod 12 is consistent with the arrangement direction of the two mounting plates 20.

[0022] The adjusting rod 12 is provided with a first thread segment 121 and a second thread segment 122, and the spiral directions of the first thread segment 121 and the second thread segment 122 are opposite. Two pillars 21 are provided at the lower ends of the two mounting plates 20, and a limiting plate 22 is installed at the bottom ends of the pillars 21. The limiting plate 22 is installed on the two pillars 21 by bolts, and a screw hole 221 is provided on the limiting plate 22, and the internal thread of the screw hole 221 matches the external thread of the corresponding first thread segment 121 or the second thread segment 122.

[0023] A guide rail 23 extending in the up-down direction is provided on the inner surface of the mounting plate 20, a fixed plate 24 is movably mounted on the guide rail 23, and a guide groove is provided on the inner side surface of the fixed plate 24. In this embodiment, the cross-sectional shapes of the guide rail 23 and the guide groove are both T-shaped, and the fixed plate 24 can move up and down along the guide rail 23. A driving device (not shown) for driving the fixed plate 24 to move up and down is also provided on the mounting plate 20. Specifically, a cylinder (not shown) is installed at the top of the mounting plate 20, and a gas rod extends downward from the cylinder, and the bottom end of the gas rod is mounted on the top of the fixed plate 24; the cylinder can drive the fixed plate 24 to move up and down along the guide rail 23 to adjust the position.

[0024] The clamp assembly 30 includes a rotating device 31 and a clamping device 32 installed on the rotating device 31. The rotating device 31 includes a mounting block 311 and a locking piece 312. The mounting block 311 is installed on the fixed plate 24. A limiting groove 313 is provided on the outer surface of the mounting block 311. The limiting groove 313 is spherical. More specifically, the limiting groove 313 is a structure with a shape between half a sphere and a sphere. The limiting groove 313 can be installed and closed in two parts on the left and right or in two parts on the top and bottom for easy installation. A plurality of ball grooves are provided on the side wall of the limiting groove 313. Balls 314 are embedded in the ball grooves, and the balls 314 can rotate in the ball grooves. A positioning hole is provided on the outer surface of the mounting block 311, and the positioning is also connected to the limiting groove 313. The locking element 312 includes a screw and a spiral head disposed at one end of the screw, and a buffer head 315 is disposed at the other end of the screw, and the end surface of the buffer head 315 is concave in an arc shape. The screw is inserted into the positioning hole, and the buffer head 315 at the bottom thereof extends into the limiting groove 313.

[0025] The inner end of the clamping device 32 is provided with a rotating head 321, which is spherical and is embedded in the limiting groove 313 and can rotate in the limiting groove 313. The end curvature of the buffer head 315 matches the curvature of the outer surface of the rotating head 321, so that the limiting can be performed well. The clamping device 32 is provided with a clamping part on the other side of the rotating head 321, and the clamping part includes a lower limiting block 322 and an upper limiting block 323. The upper limiting block 323 is provided with a limiting bolt 324, and the limiting bolt 324 can be spirally moved up and down to lock the circuit board 100 clamped between the upper limiting block 323 and the lower limiting block 322.

[0026] During operation, the circuit board 100 is clamped on the two clamping devices 32, and the electronic components are welded on the circuit board 100. When the angle needs to be changed, the circuit board can be rotated to the required angle in the front-to-back direction, and then the rotating head 321 can be locked by the locking piece 312. In addition, the left-right and front-to-back tilt angles can be adjusted by adjusting the upper and lower positions of the fixing plate 24, adjusting the angle of the rotating head 321 in the limit groove 313, and adjusting the mounting block 20 to move closer or farther away. During welding, the blowing device can blow air to the bottom surface of the circuit board through the through hole, which can reduce the probability of heat deformation of the circuit board during welding. And the circuit board after welding can be rotated downward so that the wind blows against the welded electronic components to cool them down.

[0027] In summary, the welding fixture of the utility model is provided with a rotating device 31, a rotating head 321, a fixed block 24 that can move up and down, and two mounting blocks 20 that move closer or farther away from each other; each part is combined; so that when welding electronic components on the circuit board, the circuit board can be rotated to the required angle in the front and back direction without disassembling the circuit board, and can achieve multi-angle rotation such as front and back tilting, left and right tilting, etc., thereby improving the convenience of welding. The setting of the blowing device can cool the circuit board, and blowing air through multiple through holes improves the uniformity of cooling. The utility model is highly practical and has a strong promotional significance.

[0028] The above-mentioned embodiment only expresses one implementation method of the utility model, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An adjustable circuit board welding fixture, characterized in that: The invention comprises a base, two mounting plates mounted on the base and a clamp assembly mounted on the inner side of the mounting plate, wherein the base is provided with a lateral positioning device, and the two mounting plates are both mounted on the lateral positioning device and can move closer to or farther away from each other along the lateral positioning device; a guide rail extending in the up-and-down direction is provided on the inner surface of the mounting plate, and a fixed plate is movably mounted on the guide rail; the clamp assembly comprises a rotating device and a clamping device mounted on the rotating device, the rotating device is arranged on the fixed plate, the rotating device comprises a mounting block and a locking piece, the mounting block is mounted on the fixed plate, a limiting groove is provided on the outer side surface of the mounting block, and the limiting groove The groove is arranged in a spherical shape, and a plurality of ball grooves are arranged on the side wall of the limit groove, in which balls are embedded, and the balls can rotate in the ball grooves; a positioning hole is arranged on the outer surface of the mounting block, and the positioning is connected to the limit groove; the locking piece is passed through the positioning hole and extends into the limit groove; a rotating head is arranged at the inner end of the clamping device, and the rotating head is embedded in the limit groove and can rotate in the limit groove; a clamping part is arranged on the other side of the clamping device, and the clamping part includes a lower limit block and an upper limit block, and a limiting bolt is arranged on the upper limit block, and the limiting bolt moves spirally up and down.

2. An adjustable circuit board welding fixture as claimed in claim 1, characterized in that: The lateral positioning device comprises a positioning rod and an adjusting head arranged outside the positioning rod; the positioning rod passes through two opposite side surfaces of the base and two mounting plates, and the extending direction of the positioning rod is consistent with the arrangement direction of the two mounting plates.

3. An adjustable circuit board welding fixture as claimed in claim 2, characterized in that: The adjustment rod is provided with a first thread segment and a second thread segment, and the spiral directions of the first thread segment and the second thread segment are opposite.

4. An adjustable circuit board welding fixture as claimed in claim 3, characterized in that: Two pillars are arranged at the lower end of the mounting plate, and a limit plate is installed at the bottom end of the pillar. The limit plate is installed on the two pillars by bolts. Screw holes are arranged on the limit plate, and the adjustment rod is screwed into the corresponding screw holes.

5. The adjustable circuit board welding fixture as claimed in claim 1, characterized in that: A blowing device is arranged in the base, a top plate is arranged on the top of the base, and a plurality of through holes are arranged on the top plate; the blowing device blows air from bottom to top toward the through holes.

6. An adjustable circuit board welding fixture as claimed in claim 5, characterized in that: The top plate is also provided with a long adjustment hole, which extends along the arrangement direction of the two mounting plates. The bottom end of the mounting plate extends into the long adjustment hole and can move along the long adjustment hole.

7. The adjustable circuit board welding fixture as claimed in claim 1, characterized in that: A cylinder is installed at the top of the mounting plate, and a gas rod is extended downward from the cylinder, and the bottom end of the gas rod is installed at the top of the fixing plate; the cylinder can drive the fixing plate to move up and down along the guide rail.

8. The adjustable circuit board welding fixture as claimed in claim 1, characterized in that: The locking element comprises a screw and a spiral head arranged at one end of the screw, and a buffer head is arranged at the other end of the screw, and the end surface of the buffer head is arranged in an inwardly concave arc shape.

9. An adjustable circuit board welding fixture as claimed in claim 8, characterized in that: The end curvature of the buffer head matches the curvature of the outer surface of the rotating head.

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