SMT fixture clamping device

Abstract

The utility model discloses a kind of SMT fixture clamping equipment, it is related to SMT fixture technical field, including positioning mechanism, the side fixed setting of the positioning mechanism is limited mechanism, the movable clamping mechanism of sliding being provided on the positioning mechanism, the utility model solves the lower end of existing SMT fixture clamping equipment and PCB board is more closely adhered, not applicable to the condition needing to be pasted in double-sided patch processing, and PCB board size is adjustable, this special fixture poor adaptability problem, the utility model is transported by the bilateral transport setting of positioning mechanism, fixed guide rail frame and the middle part of adjusting type guide rail frame transmission exists empty stop, then cooperate the clamping of clamping mechanism to PCB, can be turned over and realize bilateral patch processing, by the separation of left and right two groups of clamping mechanism, adjusting assembly can adjust the spacing between two groups of four-corner clamping, before clamping PCB, embed four-corner clamping in work shape frame, after clamping PCB, pull up work shape frame and transversely rotate, under the elastic force of spring work shape frame can be stuck PCB board and realize fixed.

Description

Technical Field

[0001] This utility model relates to the field of SMT fixture technology, specifically to an SMT fixture clamping device. Background Technology

[0002] SMT (Surface Mount Technology) is an abbreviation for a series of processes performed on a PCB (Printed Circuit Board). SMT stands for Surface Mount Technology, one of the most popular technologies and processes in the electronics assembly industry. Surface mount technology, also known as surface mount technology, is a circuit assembly technology that mounts leadless or short-lead surface mount components onto the surface of a printed circuit board or other substrate, and then assembles them through reflow soldering or dip soldering. Typically, the electronic products we use are designed according to circuit diagrams using PCBs and various capacitors, resistors, and other electronic components. Therefore, various electrical appliances require different SMT processing techniques.

[0003] In the SMT (Surface Mount Technology) assembly process, a fixture is needed to clamp the PCB. An SMT-specific fixture, authorized by publication number CN219555270U, ​​includes an SMT fixture body. The fixture body has an internal placement groove, with symmetrically fixed positioning posts on one side of the groove. The fixture body also has an edge-pressing assembly comprising multiple pressure plates, each with a rubber pad fixedly connected to its bottom. The top of the fixture body has multiple mounting slots, located on the left, right, and rear sides of the placement groove. Multiple threaded holes are provided inside the mounting slots, and adjusting bolts are movably connected to both ends of the multiple pressure plates. Heat dissipation slots are symmetrically provided inside the placement slots. By designing the edge pressing component, when processing the PCB board using the SMT special fixture, the pressure plate presses down on the edge of the PCB board to prevent the edge of the PCB board from lifting when heated during processing, thereby protecting the PCB board and improving the yield of PCB board processing. The lower end of the SMT fixture clamping equipment with this structure fits tightly to the PCB board, which is not suitable for situations where double-sided surface mount processing is required. In addition, the size of the PCB board is adjustable, and this special fixture has poor adaptability.

[0004] To address the aforementioned issues, an SMT fixture clamping device is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide an SMT fixture clamping device, which solves the problem that the lower end of the existing SMT fixture clamping device is too tightly attached to the PCB board, making it unsuitable for double-sided surface mount processing, and the PCB board size is adjustable, resulting in poor adaptability of this special fixture.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an SMT fixture clamping device, comprising a positioning mechanism, a limiting mechanism fixedly disposed on one side of the positioning mechanism, and a movable clamping mechanism slidably disposed on the positioning mechanism. The positioning mechanism includes a fixed guide rail frame and an adjustable guide rail frame, the fixed guide rail frame and the adjustable guide rail frame being disposed opposite to each other. The limiting mechanism includes a limiting rod connected to one side of the fixed guide rail frame and the adjustable guide rail frame. The clamping mechanism is provided with two sets of clamping mechanisms respectively resting on the upper ends of the fixed guide rail frame and the adjustable guide rail frame. One set of clamping mechanisms includes two sets of four-corner clamps and an elastic component. An adjusting component connects the two sets of four-corner clamps. The elastic component includes an I-shaped frame inserted into the four-corner clamps, and a spring is connected between the I-shaped frame and the four-corner clamps.

[0007] Preferably, the positioning mechanism further includes a base plate fixedly disposed at the lower end of the fixed guide rail frame, and a rotating shaft is movably disposed between the fixed guide rail frame and the adjustable guide rail frame, with one end of the rotating shaft connected to a motor component.

[0008] Preferably, the motor component is fixedly mounted on the lower end of the base plate, and the output end of the motor component is a belt, which is mounted on one end of the rotating shaft.

[0009] Preferably, the output end of the rotating shaft is connected to a movable conveyor belt.

[0010] Preferably, the positioning mechanism further includes an adjusting screw rotatably sleeved in the adjustable guide rail frame, one end of the adjusting screw being configured as a turntable, and the other end of the adjusting screw being movably inserted into the fixed guide rail frame.

[0011] Preferably, the limiting mechanism further includes two sets of limiting frames fixedly disposed on one side of the fixed guide rail frame and the adjustable guide rail frame, with limiting rods inserted into the limiting frames, and the fixed position of the limiting rods being opposite to the moving position of the four corner clamps.

[0012] Preferably, the four corner clamps are provided with sleeve frames at the embedding positions of the I-beam frame, and one side of the four corner clamps is fixed with a plug rod for inserting the PCB.

[0013] Preferably, the adjustment assembly includes a screw rod that passes through two sets of four-corner clamps, and nuts are rotatably provided on both sides of the screw rod, with the nuts being inserted into one side of the four-corner clamps for limiting their position.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. The SMT fixture clamping equipment provided by this utility model, through the double-sided conveying setting of the positioning mechanism, has a gap in the middle of the conveying of the fixed guide rail and the adjustable guide rail. With the clamping mechanism clamping the PCB, it can be flipped to realize double-sided surface mount processing. This solves the problem that the lower end of the existing SMT fixture clamping equipment is too tightly attached to the PCB board, and is not suitable for situations where double-sided surface mount processing is required.

[0016] 2. The SMT fixture clamping device provided by this utility model can adapt to PCBs of different sizes by separating and fixing the left and right sets of clamping mechanisms. It can complete side clamping. The spacing between the two sets of four corner clamps can be adjusted by adjusting the components. Before clamping the PCB, the I-beam is embedded in the four corner clamps. After clamping the PCB, the I-beam is pulled up and rotated laterally. Under the action of the elastic force of the spring, the I-beam can hold the PCB board to achieve fixation. The clamping mechanism realizes double-sided clamping of the PCB board and completes transportation in conjunction with the positioning mechanism, which solves the problem of poor adaptability of existing SMT fixtures. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0019] Figure 3 This is a schematic diagram of the overall structure of the present invention. Figure 3 ;

[0020] Figure 4 This is a schematic diagram of the clamping structure of the clamping mechanism of this utility model;

[0021] Figure 5 This is a schematic diagram of the disassembled structure of the clamping mechanism of this utility model.

[0022] In the diagram: 1. Positioning mechanism; 11. Base plate; 12. Fixed guide rail frame; 13. Adjustable guide rail frame; 14. Motor component; 141. Belt; 15. Rotary shaft; 151. Conveyor belt; 16. Adjusting screw; 161. Turntable; 2. Limiting mechanism; 21. Limiting frame; 22. Limiting rod; 3. Clamping mechanism; 31. Four-corner clamping; 311. Sleeve frame; 312. Insert rod; 32. Elastic component; 321. I-beam frame; 322. Spring; 33. Adjusting component; 331. Screw component; 332. Nut component. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0025] Combination Figure 1 This utility model discloses an SMT fixture clamping device, including a positioning mechanism 1, a limiting mechanism 2 fixedly installed on one side of the positioning mechanism 1, and a movable clamping mechanism 3 slidably installed on the positioning mechanism 1. The positioning mechanism 1 includes a fixed guide rail frame 12 and an adjustable guide rail frame 13, which are arranged opposite to each other. The limiting mechanism 2 includes a limiting rod 22 connected to one side of the fixed guide rail frame 12 and the adjustable guide rail frame 13. The clamping mechanism 3 is provided with two sets of clamps respectively placed on the upper ends of the fixed guide rail frame 12 and the adjustable guide rail frame 13. One clamping mechanism 3 includes two sets of four-corner clamps 31 and elastic components 32, and an adjusting component 33 connecting the two sets of four-corner clamps 31. The elastic component 32 includes a I-shaped frame 321 inserted into the four-corner clamps 31, and a spring 322 connecting the I-shaped frame 321 and the four-corner clamps 31.

[0026] Specifically, the fixed guide rail 12 and the adjustable guide rail 13 are arranged opposite each other to realize the transport of PCB. The limiting rod 22 is fixed on one side of the four corner clamps 31 to prevent the four corner clamps 31 from moving further, realizing the placement limit of the clamping mechanism 3. The separate arrangement of the two clamping mechanisms 3 can adapt to PCBs of different sizes and complete side clamping. The spacing between the two sets of four corner clamps 31 can be adjusted by adjusting component 33. Before clamping the PCB, the I-beam 321 is embedded in the four corner clamps 31. After clamping the PCB, the I-beam is pulled up. The frame 321 rotates laterally, and under the elastic force of the spring 322, the I-shaped frame 321 can clamp the PCB board to achieve fixation. The clamping mechanism 3 achieves double-sided clamping of the PCB board, and works with the positioning mechanism 1 to complete transportation. It works with the limiting mechanism 2 to complete the placement positioning. The combination of the two clamping mechanisms 3 allows the fixture to complete clamping according to the size of the PCB board. There is a gap in the middle of the conveying of the fixed guide rail frame 12 and the adjustable guide rail frame 13. With the clamping of the clamping mechanism 3, the clamping mechanism 3 can be flipped to achieve double-sided placement processing.

[0027] The present invention will be further described below with reference to the embodiments.

[0028] Example 1:

[0029] Combination Figure 2 and Figure 3 The positioning mechanism 1 also includes a base plate 11 fixedly mounted at the lower end of the fixed guide rail frame 12. A rotating shaft 15 is movably connected between the fixed guide rail frame 12 and the adjustable guide rail frame 13. One end of the rotating shaft 15 is connected to a motor component 14. The base plate 11 fixes the fixed guide rail frame 12, the rotating shaft 15 connects the fixed guide rail frame 12 and the adjustable guide rail frame 13, and the motor component 14 drives the rotating shaft 15.

[0030] The motor component 14 is fixedly installed at the lower end of the base plate 11. The output end of the motor component 14 is a belt 141, which is located at one end of the rotating shaft 15. The motor component 14 drives the belt 141 to rotate the rotating shaft 15. The rotating shaft 15 is movably inserted between the fixed guide rail frame 12 and the adjustable guide rail frame 13.

[0031] The output end of the rotating shaft 15 is connected to a movable conveyor belt 151. The conveyor belt 151 is sleeved on one side of the fixed guide rail frame 12 and the adjustable guide rail frame 13. It moves under the drive of the rotating shaft 15. The clamping mechanism 3 rests on the conveyor belt 151 to complete the patch delivery.

[0032] The positioning mechanism 1 also includes an adjusting screw 16 rotatably sleeved in the adjustable guide rail frame 13. One end of the adjusting screw 16 is set as a turntable 161, and the other end of the adjusting screw 16 is movably inserted into the fixed guide rail frame 12. Manually rotating the turntable 161 can drive the adjustable guide rail frame 13 to move along the adjusting screw 16. The fixed guide rail frame 12 is fixed on one side, thereby realizing the adjustment of the conveying distance.

[0033] The limiting mechanism 2 also includes two sets of limiting frames 21 fixedly installed on one side of the fixed guide rail frame 12 and the adjustable guide rail frame 13. The limiting rod 22 is inserted into the limiting frame 21. The fixed position of the limiting rod 22 is opposite to the moving position of the four corner clamps 31. The limiting rod 22 is set to limit the four corner clamps 31. The limiting frame 21 is connected to one side of the fixed guide rail frame 12 and the adjustable guide rail frame 13 by screws, and its position is adjustable.

[0034] Example 2:

[0035] Combination Figure 4 and Figure 5 A sleeve 311 is provided on the four corner clamps 31 corresponding to the embedding position of the I-shaped frame 321. A plug rod 312 for inserting PCB is fixed on one side of the four corner clamps 31. The sleeve 311 realizes the elastic reset of the I-shaped frame 321, which makes it easy for the PCB to be aligned with the plug rod 312 to complete the insertion.

[0036] The adjustment assembly 33 includes a screw 331 that passes through two sets of four-corner clamps 31. Nuts 332 are rotatably disposed on both sides of the screw 331. The nuts 332 are inserted into one side of the four-corner clamps 31 for limiting. By adjusting the fixed position of the nuts 332 on the screw 331, the maximum fixed distance between the two sets of four-corner clamps 31 can be adjusted to adapt to changes in PCB size.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An SMT fixture clamping device, comprising a positioning mechanism (1), characterized in that: A limiting mechanism (2) is fixedly provided on one side of the positioning mechanism (1), and a movable clamping mechanism (3) is slidably provided on the positioning mechanism (1); The positioning mechanism (1) includes a fixed guide rail frame (12) and an adjustable guide rail frame (13) with adjustable position. The fixed guide rail frame (12) and the adjustable guide rail frame (13) are arranged opposite to each other. The limiting mechanism (2) includes a limiting rod (22) connected to one side of the fixed guide rail frame (12) and the adjustable guide rail frame (13). The clamping mechanism (3) is provided with two sets of clamps respectively placed on the upper ends of the fixed guide rail frame (12) and the adjustable guide rail frame (13). One set of clamping mechanism (3) includes two sets of four-corner clamps (31) and elastic components (32). An adjusting component (33) is connected to the two sets of four-corner clamps (31). The elastic component (32) includes an I-shaped frame (321) inserted into the four-corner clamps (31). A spring (322) is connected between the I-shaped frame (321) and the four-corner clamps (31).

2. The SMT fixture clamping device according to claim 1, characterized in that: The positioning mechanism (1) further includes a base plate (11) fixedly set at the lower end of the fixed guide rail frame (12), and a rotating shaft (15) is movably connected between the fixed guide rail frame (12) and the adjustable guide rail frame (13), with a motor component (14) connected to one end of the rotating shaft (15).

3. The SMT fixture clamping device according to claim 2, characterized in that: The motor component (14) is fixedly installed at the lower end of the base plate (11), and the output end of the motor component (14) is set as a belt (141), which is located at one end of the rotating shaft (15).

4. The SMT fixture clamping device according to claim 2, characterized in that: The output end of the rotating shaft (15) is connected to a movable conveyor belt (151).

5. The SMT fixture clamping device according to claim 1, characterized in that: The positioning mechanism (1) further includes an adjusting screw (16) that is rotatably sleeved in the adjustable guide rail frame (13). One end of the adjusting screw (16) is configured as a turntable (161), and the other end of the adjusting screw (16) is movably inserted into the fixed guide rail frame (12).

6. The SMT fixture clamping device according to claim 1, characterized in that: The limiting mechanism (2) also includes two sets of limiting frames (21) fixedly installed on one side of the fixed guide rail frame (12) and the adjustable guide rail frame (13). The limiting rod (22) is inserted into the limiting frame (21), and the fixed position of the limiting rod (22) is opposite to the moving position of the four corner clamps (31).

7. The SMT fixture clamping device according to claim 1, characterized in that: The four corner clamps (31) are provided with a sleeve frame (311) at the embedding position of the I-beam frame (321), and a plug rod (312) for inserting PCB is fixed on one side of the four corner clamps (31).

8. The SMT fixture clamping equipment according to claim 1, characterized in that: The adjustment assembly (33) includes a screw (331) that passes through two sets of four-corner clamps (31), and a nut (332) is rotatably provided on both sides of the screw (331). The nut (332) is inserted into one side of the four-corner clamp (31) for limiting.

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