A SMT patch fixture

Abstract

The utility model relates to the technical field of SMT patch, and discloses an SMT patch fixture, including a placement table and a support frame, the support frame is fixedly installed on the bottom of the placement table, a clamping mechanism is arranged on the placement table, the clamping mechanism includes a device plate and a cross plate, and a servo motor is fixedly installed on the device plate. The utility model places a circuit board on the placement table, starts the servo motor to drive the bidirectional screw to rotate, so that the first adjustment seat and the second adjustment seat are close to each other, so that they clamp the two sides of the circuit board to limit the position, and after completion, the turning handle is turned to drive the threaded rod to rotate, so that the device plate moves downward under the action of the threaded rod, so that the pressure block presses down and fixes the upper surface of the edge of the circuit board, which can avoid the problem of processing warping caused by the unlimited structure on the upper surface of the circuit board, and improve the processing accuracy of the SMT patch.

Description

Technical Field

[0001] The utility model relates to the technical field of SMT patches, in particular to an SMT patch fixture. Background Art

[0002] SMT patch refers to the abbreviation of a series of process flows based on PCB boards. It is the most popular technology and process in the current electronic assembly industry, mainly including solder paste printing, precise patch, reflow soldering and other steps. In the process of SMT patch processing, in order to ensure the stability of the patch, a clamp mechanism is required to clamp and limit the PCB board.

[0003] For example, the patent with the announcement number CN219514537U discloses an SMT patch clamp, which belongs to the technical field of SMT patch clamps. The utility model is an SMT patch clamp, including a base, a clamp seat and a PCB board. The upper end of the clamp seat is provided with a cleaning scraper for cleaning surface debris, the upper end of the clamp seat is provided with a slide seat near the inner position, and one end of the slide seat is rotatably installed with a clamp block for clamping the PCB board. The utility model can drive the clamp seat moving end to automatically move and clamp different types of PCB boards through the transmission guide rod after the clamp seat is set as a split structure, and then the sliding slide seat drives the limit pin to automatically engage and connect to the inside of the positioning hole through the reset spring, and can apply a force to the adjacent clamp block through the telescopic reset rod, so that the two ends of the clamp PCB board are clamped to form a limit, and the convex pad forms a protection to prevent damage. The operation is simple, and the PCB boards of different specifications can be conveniently limited through this structure, and the overall work efficiency is improved without changing the clamping mechanism back and forth.

[0004] At present, the existing SMT patch fixture adopts a two-side clamping and fixing method for clamping and fixing the circuit board. Although this method can fix the circuit board, it cannot limit the upper surface of the circuit board, which easily leads to the problem of warping during SMT patch, affecting the processing accuracy of the SMT patch. Therefore, an SMT patch fixture is proposed to solve the above problem. Utility Model Content

[0005] The utility model aims to provide a SMT patch fixture to solve the above-mentioned problem.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an SMT patch fixture, comprising a placement table and a support frame, the support frame is fixedly installed at the bottom of the placement table, and a clamping mechanism is arranged on the placement table;

[0007] The clamping mechanism includes a device plate and a cross plate, a servo motor is fixedly mounted on the device plate, a bidirectional screw is fixedly mounted on the output end of the servo motor, a first adjustment seat is threadedly connected to the bidirectional screw, a clamping column is fixedly mounted on the upper surface of the first adjustment seat, a pressure block is fixedly mounted on the upper end of the clamping column, a threaded rod is rotatably connected to the cross plate through a bearing, a threaded sleeve is fixedly mounted on the middle part of the device plate, and the threaded rod is threadedly connected to the inside of the threaded sleeve.

[0008] Preferably, the bidirectional screw is threadedly connected to a second adjustment seat, the number of the clamping columns is seven, and the seven clamping columns are fixedly installed on the first adjustment seat at equal intervals, and the clamping columns can limit and fix the edge of the circuit board through the rotation of the bidirectional screw.

[0009] Preferably, a sliding rod is fixedly installed on the device plate, the first adjustment seat and the second adjustment seat are slidably connected to the sliding rod, a guide opening is opened on the upper surface of the placement table, and the clamping column passes through the inside of the guide opening. The setting of the guide opening can facilitate the clamping column to pass through the placement table and can perform stable movement.

[0010] Preferably, a turning handle is fixedly installed on the lower end of the threaded rod, and a limiting column is fixedly installed on the bottom of the placing table. The number of the limiting columns is four, and the four limiting columns are respectively fixedly installed on the four corners of the bottom of the placing table. The setting of the turning handle can facilitate the staff to rotate the threaded rod.

[0011] Preferably, a limiting hole is provided on the upper surface of the device plate, the limiting column passes through the inside of the limiting hole, the cross plate is fixedly mounted on the support frame, and the device plate is located between the placement table and the cross plate. The setting of the limiting hole and the limiting column can play a limiting and guiding role for the device plate.

[0012] Preferably, there is a rubber block directly on the bottom of the pressure block, a threaded column is fixedly connected to the bottom of the clamping column, a threaded hole is opened on the first adjustment seat, and the threaded column is threadedly connected to the inside of the threaded hole. The provision of the rubber block can protect the circuit board.

[0013] The utility model provides a SMT patch fixture, which has the following beneficial effects:

[0014] (1) The utility model places the circuit board on the placement table, starts the servo motor to drive the bidirectional screw to rotate, so that the first adjustment seat and the second adjustment seat are close to each other, so that they clamp the two sides of the circuit board to limit the position. After completion, the handle is turned to drive the threaded rod to rotate, so that the device plate moves downward under the action of the threaded rod, and the pressure block presses down and fixes the upper surface of the edge of the circuit board, which can avoid the problem of processing warping caused by the unlimited structure on the upper surface of the circuit board, thereby improving the processing accuracy of the SMT patch.

[0015] (2) The utility model provides a threaded column at the bottom of the clamp column, which can facilitate the removal of the clamp column from the first adjustment seat for replacement. The utility model provides a rubber block at the bottom of the pressure block to protect the circuit board, thereby avoiding the problem of direct contact between the pressure block and the circuit board causing damage to the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the device board of the utility model;

[0019] Figure 3 This is a schematic diagram of the horizontal plate structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the column clamping structure of the utility model.

[0021] In the figure: 1. placing table; 2. clamping mechanism; 201. installation plate; 202. servo motor; 203. bidirectional screw; 204. first adjusting seat; 205. second adjusting seat; 206. sliding rod; 207. clamping column; 208. pressing block; 209. horizontal plate; 210. threaded sleeve; 211. turning handle; 212. threaded rod; 213. guide port; 3. supporting frame; 4. limiting column; 5. limiting hole; 6. threaded column; 7. threaded hole; 8. rubber soft block. DETAILED DESCRIPTION

[0022] 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.

[0023] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] Embodiment 1:

[0025] like Figure 1-4 As shown, the utility model provides a technical solution: an SMT patch fixture, comprising a placement table 1 and a support frame 3, the support frame 3 is fixedly installed at the bottom of the placement table 1, and a clamping mechanism 2 is arranged on the placement table 1;

[0026] The clamping mechanism 2 includes a device plate 201 and a cross plate 209. A servo motor 202 is fixedly installed on the device plate 201. A bidirectional screw 203 is fixedly installed on the output end of the servo motor 202. A first adjustment seat 204 is threadedly connected to the bidirectional screw 203. A clamping column 207 is fixedly installed on the upper surface of the first adjustment seat 204. A pressure block 208 is fixedly installed on the upper end of the clamping column 207. A threaded rod 212 is rotatably connected to the cross plate 209 through a bearing. A threaded sleeve 210 is fixedly installed in the middle of the device plate 201, and the threaded rod 212 is threadedly connected to the inside of the threaded sleeve 210.

[0027] The second adjustment seat 205 is threadedly connected to the bidirectional screw 203. There are seven clamping columns 207, and the seven clamping columns 207 are fixedly installed on the first adjustment seat 204 at equal intervals. The clamping columns 207 can limit and fix the edge of the circuit board by rotating the bidirectional screw 203.

[0028] A slide bar 206 is fixedly installed on the device plate 201, and the first adjustment seat 204 and the second adjustment seat 205 are slidably connected to the slide bar 206. A guide opening 213 is opened on the upper surface of the placement table 1, and the clamping column 207 passes through the inside of the guide opening 213. The setting of the guide opening 213 can facilitate the clamping column 207 to pass through the placement table 1 and can move stably.

[0029] A turning handle 211 is fixedly installed at the lower end of the threaded rod 212, and a limiting column 4 is fixedly installed at the bottom of the placing table 1. There are four limiting columns 4, and the four limiting columns 4 are respectively fixedly installed at the four corners of the bottom of the placing table 1. The setting of the turning handle 211 can facilitate the staff to rotate the threaded rod 212.

[0030] A limiting hole 5 is provided on the upper surface of the device plate 201, and a limiting column 4 passes through the inside of the limiting hole 5. The cross plate 209 is fixedly installed on the support frame 3. The device plate 201 is located between the placement table 1 and the cross plate 209. The setting of the limiting hole 5 and the limiting column 4 can play a limiting and guiding role for the device plate 201.

[0031] In this embodiment, after placing the circuit board on the placement table 1, the servo motor 202 is started to drive the bidirectional screw 203 to rotate, so that the first adjustment seat 204 and the second adjustment seat 205 are close to each other, so that the clamp 207 limits the two sides of the circuit board. After completion, the handle 211 is turned to drive the threaded rod 212 to rotate, so that the device plate 201 moves downward under the action of the threaded rod 212, and the pressure block 208 presses down and fixes the upper surface of the edge of the circuit board, which can avoid the problem of processing warping caused by the unlimited structure on the upper surface of the circuit board, thereby improving the processing accuracy of the SMT patch.

[0032] Embodiment 2:

[0033] like Figure 1-4 As shown, based on the first embodiment, the utility model provides a technical solution: a rubber block 8 is directly provided at the bottom of the pressure block 208, a threaded column 6 is fixedly connected to the bottom of the clamping column 207, a threaded hole 7 is provided on the first adjustment seat 204, and the threaded column 6 is threadedly connected to the inside of the threaded hole 7. The arrangement of the rubber block 8 can protect the circuit board.

[0034] In this embodiment, by setting a threaded column 6 at the bottom of the clamp column 207, the clamp column 207 can be easily removed from the first adjustment seat 204 for replacement, and by setting a rubber soft block 8 at the bottom of the pressure block 208, the circuit board can be protected to avoid the problem of direct contact between the pressure block 208 and the circuit board causing damage to the circuit board.

[0035] When in use, after placing the circuit board on the placement table 1, the servo motor 202 is started to drive the bidirectional screw 203 to rotate, so that the first adjustment seat 204 and the second adjustment seat 205 are close to each other, so that the clamp 207 limits the two sides of the circuit board. After completion, the handle 211 is turned to drive the threaded rod 212 to rotate, so that the device plate 201 moves downward under the action of the threaded rod 212, so that the pressure block 208 presses down and fixes the upper surface of the edge of the circuit board, which can avoid the problem of processing warping caused by the unlimited structure on the upper surface of the circuit board, thereby improving the processing accuracy of the SMT patch; by arranging the threaded column 6 at the bottom of the clamp column 207, the clamp column 207 can be conveniently removed from the first adjustment seat 204 for replacement, and by arranging the rubber soft block 8 at the bottom of the pressure block 208, the circuit board can be protected, avoiding the problem of direct contact between the pressure block 208 and the circuit board causing damage to the circuit board.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A SMT patch fixture, comprising a placement table (1) and a support frame (3), characterized in that: The support frame (3) is fixedly mounted on the bottom of the placement table (1), and a clamping mechanism (2) is provided on the placement table (1); The clamping mechanism (2) comprises a device plate (201) and a transverse plate (209); a servo motor (202) is fixedly mounted on the device plate (201); a bidirectional screw (203) is fixedly mounted on the output end of the servo motor (202); a first adjustment seat (204) is threadedly connected to the bidirectional screw (203); a clamping column (207) is fixedly mounted on the upper surface of the first adjustment seat (204); a pressure block (208) is fixedly mounted on the upper end of the clamping column (207); a threaded rod (212) is rotatably connected to the transverse plate (209) via a bearing; a threaded sleeve (210) is fixedly mounted on the middle portion of the device plate (201); and the threaded rod (212) is threadedly connected to the inside of the threaded sleeve (210).

2. The SMT patch fixture according to claim 1, characterized in that: The bidirectional screw rod (203) is threadedly connected to a second adjustment seat (205), the number of the clamping columns (207) is seven, and the seven clamping columns (207) are fixedly mounted on the first adjustment seat (204) at equal intervals.

3. The SMT patch fixture according to claim 2, characterized in that: A sliding rod (206) is fixedly mounted on the device plate (201); the first adjustment seat (204) and the second adjustment seat (205) are slidably connected to the sliding rod (206); a guide opening (213) is provided on the upper surface of the placement platform (1); and the clamping column (207) passes through the inside of the guide opening (213).

4. The SMT patch fixture according to claim 1, characterized in that: A turning handle (211) is fixedly mounted on the lower end of the threaded rod (212), and a limiting column (4) is fixedly mounted on the bottom of the placement platform (1). The number of the limiting columns (4) is four, and the four limiting columns (4) are respectively fixedly mounted at the four corners of the bottom of the placement platform (1).

5. The SMT patch fixture according to claim 4, characterized in that: The upper surface of the device plate (201) is provided with a limiting hole (5), the limiting column (4) passes through the inside of the limiting hole (5), the horizontal plate (209) is fixedly mounted on the support frame (3), and the device plate (201) is located between the placement table (1) and the horizontal plate (209).

6. The SMT patch fixture according to claim 1, characterized in that: A rubber soft block (8) is directly provided at the bottom of the pressing block (208); a threaded column (6) is fixedly connected to the bottom of the clamping column (207); a threaded hole (7) is provided on the first adjustment seat (204); and the threaded column (6) is threadedly connected to the inside of the threaded hole (7).

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