A circuit board clamp device

Abstract

The utility model discloses a kind of circuit board clamp devices, it is related to circuit board processing technical field, including two fixed blocks, the top of two The fixed block is provided with buffer assembly, two adjusting assemblies and two clamping assemblies, the buffer assembly includes shell, telescopic rod is installed in the inside of shell, the outer wall of telescopic rod is equipped with buffer spring, and the telescopic end of telescopic rod is connected with movable block.This device is formed by telescopic rod and buffer spring in buffer assembly Elastic cooperation, clamping force self-adapting buffer can be realized, avoid that clamping force is too big to cause damage to circuit board, improve clamping safety, movable block is slidably connected with the sliding slot of shell by sliding block, guarantee buffer movement stable, and further ensure circuit board positioning accuracy;Connecting rod can transmit buffer force, cooperate adjusting assembly and clamping assembly can be adapted to different specifications circuit board, effectively widen device application range, improve production efficiency and reduce cost.

Description

Technical Field

[0001] This utility model relates to the field of circuit board processing technology, specifically a circuit board clamping device. Background Technology

[0002] In the core processes of dispensing and soldering circuit boards in electronic manufacturing, a dedicated circuit board clamping device is required to precisely clamp and position the circuit board (PCB). Through the synergistic action of the clamping plate assembly, positioning pins, and elastic pressure blocks, the displacement of the circuit board in multiple directions is restricted, ensuring that the adhesive application path of the dispensing machine matches the solder tip landing point of the soldering machine. At the same time, the clamp must have an anti-scratch design, and the contact panel must be made of an appropriate material to avoid damaging the copper foil lines and electronic component pins on the surface of the circuit board. The clamping force is also adjustable to accommodate the fixing needs of circuit boards of different thicknesses and flexible PCBs.

[0003] Existing circuit board clamps have poor buffering effect and lack adaptive pressure adjustment. They are prone to warping and cracking of circuit boards, copper foil wear, component damage, and processing defects such as glue misalignment and poor soldering due to excessive clamping force or uneven force. This reduces yield and increases rework and scrap costs. Utility Model Content

[0004] The purpose of this utility model is to provide a circuit board clamping device that facilitates adaptive pressure adjustment to dynamically match circuit boards of different materials, avoids clamping damage through automatic buffering, ensures positioning to reduce processing defects, simplifies operation, improves yield, and reduces costs.

[0005] To solve the above technical problems, the present invention adopts the following technical solution: a circuit board clamping device, comprising two fixing blocks, a buffer assembly, two adjusting assemblies and two clamping assemblies arranged above the two fixing blocks, the buffer assembly comprising a housing, a telescopic rod installed inside the housing, a buffer spring sleeved on the outer wall of the telescopic rod, a movable block connected to the telescopic end of the telescopic rod, a connecting rod and two sliders installed on the outer wall of the movable block, and a sliding groove adapted to the two sliders being opened inside the housing.

[0006] Preferably, the two fixed blocks are rotatably connected to a lead screw on one side that is close to each other. One end of the lead screw passes through one of the fixed blocks and is connected to a first crank. A sliding seat is threaded onto the outer wall of the lead screw. Two limiting rods are inserted inside the sliding seat. An anti-slip pad is installed on the bottom surface of each fixed block.

[0007] Preferably, the adjusting component includes a square tube, inside which a square rod is provided, and inside the square rod are two damping rods. Each damping rod has a return spring sleeved on its outer wall, and each damping rod has a retaining bead connected to its telescopic end.

[0008] Preferably, the inside of the square tube is provided with multiple slots that are adapted to the two locking beads, the inside of the square tube is provided with a sliding block, the inside of the square rod is provided with a sliding groove that is adapted to the sliding block, and the outer wall of the square rod is rotatably connected to a rotating shaft.

[0009] Preferably, one end of one of the rotating shafts is connected to the outer wall of the housing, and one end of the other rotating shaft passes through the square rod and is connected to a second crank handle.

[0010] Preferably, the clamping assembly includes a fixing frame, a knob is rotatably connected inside the fixing frame, one end of the knob passes through the fixing frame and is connected to a threaded rod, a threaded cylinder is threadedly connected to the outer wall of the threaded rod, and a clamping plate is connected to the other end of the threaded cylinder.

[0011] Preferably, the outer wall of the clamping plate is connected to a limiting block, the inside of the fixing frame is provided with a limiting groove that matches the limiting block, and rubber pads are installed inside the fixing frame and on the outer wall of the clamping plate.

[0012] Preferably, the upper surfaces of the two fixing blocks are respectively connected to the bottom surfaces of the two square tubes, and the outer wall of the connecting rod and the outer wall of the other rotating shaft are respectively connected to the outer walls of the two fixing frames.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This device achieves adaptive buffering of clamping force through the elastic cooperation between the telescopic rod and the buffer spring in the buffer assembly. This prevents excessive clamping force from damaging the circuit board and improves clamping safety. The movable block slides with the slider and the groove of the outer shell to ensure smooth buffering movement, thereby ensuring the positioning accuracy of the circuit board. The connecting rod can transmit the buffering force. Together with the adjustment assembly and clamping assembly, it can be adapted to circuit boards of different specifications, effectively broadening the application range of the device. At the same time, it simplifies the clamping pressure adjustment process, reduces processing defects, improves production efficiency, and reduces costs.

[0015] This device uses a lead screw and a sliding seat with a first crank to adjust the clamping distance to accommodate circuit boards of different sizes, improving the device's versatility. The limit rod guides and limits the sliding seat, ensuring smooth adjustment. The anti-slip pad on the bottom of the fixed block increases contact friction, preventing the device from shifting during operation and improving clamping stability. This further ensures the accuracy of processing steps such as dispensing and welding, reduces processing defects, and improves production efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the internal structure of this utility model.

[0018] Figure 2 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 3 This is a schematic diagram of the internal structure of the buffer component in this utility model.

[0020] Figure 4 This is a schematic diagram of the internal structure of the adjustment component in this utility model.

[0021] Figure 5 This is a three-dimensional structural diagram of the clamping component in this utility model.

[0022] In the diagram: 1. Fixed block; 2. Buffer assembly; 201. Outer shell; 202. Telescopic rod; 203. Buffer spring; 204. Movable block; 205. Slider; 206. Connecting rod; 207. Slide groove; 3. Adjustment assembly; 301. Square tube; 302. Square rod; 303. Damping rod; 304. Return spring; 305. Locking ball; 306. Locking groove; 307. Sliding block; 308. Sliding groove; 309. Rotating shaft; 4. Clamping assembly; 401. Fixed frame; 402. Knob; 403. Rubber pad; 404. Threaded rod; 405. Threaded cylinder; 406. Clamping plate; 407. Limiting block; 408. Limiting groove; 5. First crank handle; 6. Lead screw; 7. Sliding seat; 8. Limiting rod; 9. Anti-slip pad; 10. Second crank handle. 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] Example: Figure 1-5As shown, this utility model provides a circuit board clamping device, including two fixed blocks 1. The fixed blocks 1 provide an installation reference for the buffer assembly 2, the adjustment assembly 3, and the clamping assembly 4, ensuring the overall structural stability. The buffer assembly 2, the two adjustment assemblies 3, and the two clamping assemblies 4 are arranged above the two fixed blocks 1. The buffer assembly 2 realizes adaptive buffering of clamping force to avoid damage to the circuit board due to excessive pressure. The buffer assembly 2 includes a housing 201. A telescopic rod 202 is installed inside the housing 201. The telescopic rod 202 works with a buffer spring 203 to achieve elastic extension and retraction, transmit buffering force, and adjust the displacement of the movable block 204. The buffer spring 203 is sleeved on the outer wall of the telescopic rod 202. The telescopic end of the telescopic rod 202 is connected to the movable block 204. A connecting rod 206 and two sliders 205 are installed on the outer wall of the movable block 204. The inside of the housing 201 is provided with a groove 207 that matches the two sliders 205.

[0025] Two fixed blocks 1 are connected to a lead screw 6 on their adjacent sides. One end of the lead screw 6 passes through one of the fixed blocks 1 and is connected to a first crank 5. The lead screw 6 rotates under the drive of the first crank 5 through a threaded engagement with a sliding seat 7, which is converted into linear motion of the sliding seat 7, thereby adjusting the distance between the two fixed blocks 1. The outer wall of the lead screw 6 is threadedly connected to the sliding seat 7. Two limiting rods 8 are installed inside the sliding seat 7. Each fixed block 1 has an anti-slip pad 9 installed on its bottom surface. The anti-slip pad 9 increases the friction between the fixed block 1 and the placement surface to prevent the device from shifting during operation. The upper surfaces of the two fixed blocks 1 are connected to the bottom surfaces of the two square tubes 301 respectively. The outer wall of the connecting rod 206 and the outer wall of the other rotating shaft 309 are connected to the outer walls of the two fixed frames 401 respectively.

[0026] The adjusting component 3 includes a square tube 301, which serves as the fixed base for the adjusting component 3, bearing the supporting force of the fixed block 1 and providing sliding guide space for the square rod 302. Its internal slot 306 cooperates with the retaining bead 305 to achieve height positioning. The square rod 302 is installed inside the square tube 301, and two damping rods 303 are installed inside the square rod 302. A return spring 304 is sleeved on the outer wall of each damping rod 303, and a retaining bead 305 is connected to the telescopic end of each damping rod 303. The damping rod 303, in conjunction with the return spring 304, adjusts the telescopic force of the retaining bead 305 to prevent misalignment during height adjustment. The square tube 301 is violently shaken. Multiple slots 306 are provided inside the square tube 301 to match the two locking beads 305. A sliding block 307 is installed inside the square tube 301. A sliding groove 308 is provided inside the square rod 302 to match the sliding block 307. A rotating shaft 309 is rotatably connected to the outer wall of the square rod 302. One end of one rotating shaft 309 is connected to the outer wall of the outer shell 201. One end of the other rotating shaft 309 passes through the square rod 302 and is connected to a second crank 10. The second crank 10 allows the operator to control the rotation of the rotating shaft 309 and adjust the tilt angle of the clamping assembly 4 to suit the processing requirements.

[0027] The clamping assembly 4 includes a fixed frame 401. A knob 402 is rotatably connected inside the fixed frame 401. One end of the knob 402 passes through the fixed frame 401 and is connected to a threaded rod 404. A threaded cylinder 405 is threadedly connected to the outer wall of the threaded rod 404. A clamping plate 406 is connected to the other end of the threaded cylinder 405. A limit block 407 is connected to the outer wall of the clamping plate 406. A limit groove 408 that matches the limit block 407 is opened inside the fixed frame 401. Rubber pads 403 are installed inside the fixed frame 401 and on the outer wall of the clamping plate 406. The rubber pads 403 are attached to the inner wall of the fixed frame 401 and the clamping surface of the clamping plate 406 to increase the friction with the circuit board to improve clamping stability and avoid damage to the circuit board surface and scratches to components caused by hard contact.

[0028] The working principle of the device is as follows: In use, firstly, rotating the first crank handle 5 drives the lead screw 6 to rotate, which in turn drives the sliding seat 7 to move along the limiting rod 8 through the threaded engagement, adjusting the distance between the two fixed blocks 1 to match the length of the circuit board. The anti-slip pad 9 on the bottom surface of the fixed block 1 increases friction to ensure the stability of the device during operation. In the adjusting assembly 3, the square rod 302 slides along the square tube 301, and the damping rod 303 and the return spring 304 drive the retaining ball 305 to engage with the corresponding slot 306, thereby achieving the positioning of the clamping height. The sliding block 307 and the sliding groove 308 cooperate to ensure a smooth height adjustment process. Rotating the second crank handle 10 drives the rotating shaft 309 to rotate, thereby adjusting the tilt angle of the clamping assembly 4. The clamping assembly 4 is designed to adapt to different processing posture requirements. Rotating the knob 402 of the clamping assembly 4 drives the threaded rod 404 to rotate, which, through the threaded engagement with the threaded cylinder 405, pushes the clamping plate 406 to translate along the limiting block 407 and the limiting groove 408, thereby achieving clamping and fixing of the circuit board in the thickness direction. During the clamping process, the telescopic rod 202 and the buffer spring 203 in the buffer assembly 2 elastically extend and retract, and together with the movable block 204, the sliding block 205 slides through the sliding groove 207 of the outer shell 201 to achieve adaptive buffering of clamping force. The rubber pads 403 on the outer wall of the fixed frame 401 and the clamping plate 406 further prevent damage to the circuit board surface and components, while enhancing the clamping friction, thus fully ensuring clamping accuracy and stability.

[0029] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A circuit board clamping device, characterized in that, It includes two fixed blocks, and above the two fixed blocks are a buffer assembly, two adjusting assemblies and two clamping assemblies. The buffer assembly includes a housing, inside which a telescopic rod is installed. The outer wall of the telescopic rod is fitted with a buffer spring. The telescopic end of the telescopic rod is connected to a movable block. The outer wall of the movable block is fitted with a connecting rod and two sliders. The inside of the housing is provided with a sliding groove adapted to the two sliders.

2. The circuit board clamping device as described in claim 1, characterized in that, Two fixed blocks are rotatably connected to a lead screw on one side that is close to each other. One end of the lead screw passes through one of the fixed blocks and is connected to a first crank. A sliding seat is threaded onto the outer wall of the lead screw. Two limiting rods are inserted inside the sliding seat. An anti-slip pad is installed on the bottom surface of each fixed block.

3. The circuit board clamping device as described in claim 1, characterized in that, The adjustment assembly includes a square tube, inside which is a square rod. Inside the square rod are two damping rods. Each damping rod has a return spring sleeved on its outer wall, and each damping rod has a retaining bead connected to its telescopic end.

4. The circuit board clamping device as described in claim 3, characterized in that, The inside of the square tube is provided with multiple slots that are adapted to the two locking beads. A sliding block is installed inside the square tube. The inside of the square rod is provided with a sliding groove that is adapted to the sliding block. A rotating shaft is rotatably connected to the outer wall of the square rod.

5. A circuit board clamping device as described in claim 4, characterized in that, One end of one of the rotating shafts is connected to the outer wall of the housing, and one end of the other rotating shaft passes through the square rod and is connected to a second crank handle.

6. A circuit board clamping device as described in claim 1, characterized in that, The clamping assembly includes a fixed frame, with a knob rotatably connected inside the fixed frame. One end of the knob passes through the fixed frame and is connected to a threaded rod. A threaded cylinder is threadedly connected to the outer wall of the threaded rod, and a clamping plate is connected to the other end of the threaded cylinder.

7. A circuit board clamping device as described in claim 6, characterized in that, The outer wall of the clamping plate is connected to a limiting block, and the inside of the fixing frame is provided with a limiting groove that matches the limiting block. Both the inside of the fixing frame and the outer wall of the clamping plate are equipped with rubber pads.

8. A circuit board clamping device as described in claim 6, characterized in that, The upper surfaces of the two fixing blocks are respectively connected to the bottom surfaces of the two square tubes, and the outer wall of the connecting rod and the outer wall of the other rotating shaft are respectively connected to the outer walls of the two fixing frames.

Images