Double-presser plate elastic pressing structure for circuit board processing

Abstract

The application provides a double-pressing plate elastic pressing structure for circuit board processing, which comprises a supporting mounting seat, a guide piece slidingly arranged in the supporting mounting seat, a first elastic piece arranged between the guide piece and the supporting mounting seat, a first hinged part arranged at the bottom end of the guide piece, a balance arm, a second hinged part and an avoiding guide hole arranged at each end of the balance arm, two sub-pressing plates, each of which is rotatably connected with a corresponding second hinged part, and a guide column arranged in the avoiding guide hole of each sub-pressing plate, and a second elastic piece arranged outside the guide column and abutting between the balance arm and the corresponding sub-pressing plate. The application realizes self-adaptive pressing and shock absorption through symmetrical double sub-pressing plates and two-stage elastic buffering, realizes stable durability through anti-rotation guide, sealing protection and wear-resistant structure, and enhances the adaptability to different plate thicknesses and plate surface changes through pre-tightening adjustment and rolling contact of the pressing roller.

Description

Technical Field

[0001] This invention relates to the field of circuit board processing equipment, and more particularly to a double-plate elastic clamping structure for circuit board processing. Background Technology

[0002] Chamfering the edges of printed circuit boards (PCBs) is a crucial step in PCB manufacturing. Its purpose is to remove burrs, improve edge smoothness, facilitate subsequent assembly, and enhance product reliability. During chamfering, a clamping device is used to firmly adhere the PCB to the processing reference surface; its performance directly affects the chamfering quality and processing consistency. Since PCB substrates are often composite materials such as epoxy fiberglass, and their thicknesses vary, with potential slight bends or dimensional deviations at the edges, the clamping structure must possess adaptive adjustment capabilities to ensure uniform clamping force and stable contour following during continuous processing.

[0003] Traditional circuit board edge chamfering clamping devices generally employ rigid pressure plates or fixed support structures. Their clamping force is difficult to automatically adjust according to changes in the board's contour, easily leading to insufficient clamping in certain areas or concentrated pressure, affecting chamfering dimensional accuracy or causing indentations on the board surface. Furthermore, existing structures often use single-point pressure application, resulting in poor uniformity of clamping force distribution and force deviations at different locations along the board edge. In addition, the lifting and resetting actions of the clamping components often rely on manual adjustment or simple elastic elements, lacking reliable guiding and limiting designs. After long-term use, this can easily lead to swaying or jamming, affecting the stability and lifespan of the equipment. Switching between circuit boards of different thicknesses involves cumbersome adjustments, and there is a lack of quick and effective means to adjust the clamping force. For clamping actions that coordinate with the chamfering tool's movement trajectory, existing clamping structures lack sufficient responsiveness, making it difficult to achieve stable floating clamping and pressure maintenance during high-speed processing. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a double-plate elastic clamping structure for circuit board processing, which addresses the above-mentioned defects in the prior art.

[0005] In order to overcome the above-mentioned defects of the prior art, embodiments of the present invention provide a double-pressure plate elastic clamping structure for circuit board processing to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: including a support mounting base;

[0007] A guide member is slidably disposed within the support mounting base, a first elastic member is provided between the guide member and the support mounting base, and a first hinge portion is provided at the bottom end of the guide member;

[0008] A balance arm, the middle part of which is rotatably connected to the first hinge part, and both ends of the balance arm are provided with a second hinge part and a clearance guide hole;

[0009] There are two auxiliary pressure plates, and the two auxiliary pressure plates are rotatably connected to the corresponding second hinge part. Each auxiliary pressure plate is provided with a guide post passing through the corresponding avoidance guide hole.

[0010] The second elastic element is sleeved outside the guide post and abuts against the balance arm and the corresponding secondary pressure plate.

[0011] Preferably, a guide bushing is provided inside the avoidance guide hole, and the guide post slides through the guide bushing; the top end of the guide bushing is provided with a bushing limiting edge, and an inner wall limiting groove is provided on the inner peripheral wall of the guide bushing, and a guide sealing ring that slides and fits against the outer peripheral wall of the guide post is embedded in the inner wall limiting groove.

[0012] Preferably, the bottom surface of the balance arm is provided with an upper elastic element seat that is sleeved outside the avoidance guide hole, and the top surface of the auxiliary pressure plate is provided with a lower elastic element seat that is coaxially arranged with the guide post; the two ends of the second elastic element extend into the upper elastic element seat and the lower elastic element seat respectively; a telescopic protective cover covering the second elastic element is provided between the upper elastic element seat and the lower elastic element seat, and the two ends of the telescopic protective cover are respectively set at the upper elastic element seat and the lower elastic element seat through connecting pressure rings.

[0013] Preferably, the bottom surface of the sub-pressure plate is provided with a contact pad, and the bottom of the sub-pressure plate is provided with a roller mounting bracket, and a pressing roller is rotatably provided in the roller mounting bracket through the roller central shaft.

[0014] Preferably, the support mounting base is provided with a guide sleeve, and the guide member slides through the guide sleeve; the outer peripheral wall of the guide member is provided with a limiting shoulder, the first elastic member is sleeved on the outside of the guide member and the top end of the first elastic member abuts against the bottom surface of the limiting shoulder; the top end of the guide member is threadedly connected with an adjusting nut.

[0015] Preferably, the outer peripheral wall of the guide member is provided with an anti-rotation guide strip along the axial direction, and the inner peripheral wall of the support mounting base is provided with an anti-rotation guide groove along the axial direction. The anti-rotation guide strip is slidably engaged in the anti-rotation guide groove. The anti-rotation guide strip is connected to the guide member through multiple anti-rotation connectors.

[0016] Preferably, a first hinge groove is provided at the bottom of the first hinge part, the middle part of the balance arm is placed in the first hinge groove and is rotatably connected to the groove wall of the first hinge groove through a first connecting pin; swing limiting blocks are symmetrically provided on both sides of the inner top wall of the first hinge groove, and a buffer pad is provided on the bottom surface of each swing limiting block.

[0017] Preferably, the second hinge portion has a second hinge groove; the top of the auxiliary pressure plate has a hinge ear plate, which is placed in the second hinge groove and rotatably connected to the groove wall of the second hinge groove through a second connecting pin; a wear-resistant bushing is sleeved on the outer peripheral wall of the second connecting pin.

[0018] Preferably, the top of the guide post is provided with a threaded connector; an anti-loosening block is sleeved on the outside of the threaded connector, and a locking washer is sequentially sleeved on the outer peripheral wall of the threaded connector and above the anti-loosening block and threaded with an anti-loosening nut.

[0019] Preferably, the outer peripheral wall of the support mounting base is provided with a mounting flange, and a plurality of reinforcing ribs are arranged in a circumferential array between the outer peripheral wall of the support mounting base and the top surface of the mounting flange; the mounting flange is provided with a circumferential array of positioning pin holes.

[0020] The present invention adopts the above technical solution and has the following technical effects compared with the prior art:

[0021] 1. By symmetrically setting secondary pressure plates at both ends of the balance arm, and with the elastic support of the second elastic element, the two secondary pressure plates can adaptively conform to the different contours of the circuit board edge, achieving uniform pressing and avoiding excessive local pressure that could damage the board edge.

[0022] 2. A two-stage elastic buffer structure is adopted. The first elastic element provides overall floating buffer, and the second elastic element provides local elastic compensation, effectively absorbing vibration and impact during the processing and preventing damage to the circuit board.

[0023] 3. The guide component is equipped with an anti-rotation guide strip and an anti-rotation guide groove to ensure that the guide component slides in a straight line without rotating; the guide post and guide bushing are precisely matched, and the guide sealing ring is used to achieve stable guidance and dust prevention, ensuring the repeatability accuracy of the pressing action.

[0024] 4. Wear-resistant bushings and guide seals are installed on key rotating parts to reduce wear; the telescopic protective cover covers the second elastic element to prevent dust from entering and extend the service life of each component.

[0025] 5. The adjusting nut can adjust the preload of the first elastic element to adapt to the needs of circuit boards with different thicknesses and hardnesses; the pressing roller makes rolling contact, reducing friction, adapting to changes in the curvature of the board edge, and has good versatility. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of a double-pressure plate elastic clamping structure for circuit board processing according to the present invention;

[0027] Figure 2This is a schematic diagram of the guide component, the first elastic component, and the balance arm of a double-pressure plate elastic clamping structure for circuit board processing according to the present invention.

[0028] Figure 3 This is a schematic diagram of an anti-rotation guide strip and anti-rotation connector of a double-pressure plate elastic clamping structure for circuit board processing according to the present invention;

[0029] Figure 4 This is a schematic diagram of the support mounting base and the first elastic element of a double-pressure plate elastic clamping structure for circuit board processing according to the present invention;

[0030] Figure 5 This is a schematic diagram of the pressing roller and roller center shaft of a double-pressure plate elastic pressing structure for circuit board processing according to the present invention;

[0031] Figure 6 This is a schematic diagram of the guide post and threaded connector of a double-pressure plate elastic clamping structure for circuit board processing according to the present invention;

[0032] Figure 7 This is a schematic diagram of the balance arm of a double-pressure plate elastic clamping structure for circuit board processing according to the present invention;

[0033] Figure 8 This is a schematic diagram of the second elastic element in a double-pressure plate elastic clamping structure for circuit board processing according to the present invention;

[0034] Figure 9 This is a schematic diagram of the inner wall limiting groove and guide sealing ring of a double pressure plate elastic clamping structure for circuit board processing according to the present invention.

[0035] The reference numerals in the attached drawings are as follows: 1. Support mounting base; 101. Guide sleeve; 102. Anti-rotation guide groove; 103. Mounting flange; 104. Reinforcing rib plate; 105. Locating pin hole; 2. Guide component; 201. First hinge part; 202. Limiting shoulder; 203. Adjusting nut; 204. Anti-rotation guide strip; 205. Anti-rotation connector; 206. First hinge groove; 207. Swing limiting block; 208. Buffer pad; 3. First elastic component; 4. Balance arm; 401. Second hinge part; 402. Clearance guide hole; 403. Guide bushing; 404. Bushing limiting edge; 405. Inner wall limiting groove; 406. Guide sealing ring; 407. First connecting pin; 408. Upper elastic element seat; 409. Second hinge groove; 5. Secondary pressure plate; 501. Guide post; 502. Lower elastic element seat; 503. Contact pad; 504. Roller mounting bracket; 505. Roller central shaft; 506. Pressure roller; 507. Hinge ear plate; 508. Second connecting pin; 509. Wear-resistant bushing; 510. Threaded connector; 6. Second elastic element; 601. Telescopic protective cover; 602. Connecting pressure ring; 7. Anti-detachment block; 701. Locking washer; 702. Anti-loosening nut. Detailed Implementation

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0037] Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Example 1:

[0039] As attached Figures 1 to 9 The diagram shows a double-plate elastic clamping structure for circuit board processing. A support mounting base 1 is fixed to an external frame. Its internal guide sleeve 101 extends axially and accommodates the sliding of the guide member 2. An anti-rotation guide groove 102 is formed in the inner wall of the support mounting base 1 and cooperates with the anti-rotation guide strip 204 to restrict the rotation of the guide member 2. A mounting flange 103 is provided on the outer peripheral wall of the support mounting base 1 and is positioned and locked to the external mounting surface through a positioning pin hole 105. A reinforcing rib 104 is inclinedly connected between the outer peripheral wall of the support mounting base 1 and the top surface of the mounting flange 103 to enhance rigidity. When the guide member 2 slides, the support mounting base 1 remains stationary and bears the reaction force.

[0040] The top of the guide member 2 is threadedly connected to an adjusting nut 203, which abuts against the top end face of the guide sleeve 101. When the adjusting nut 203 is rotated, the guide member 2 is restricted from circumferential rotation by the anti-rotation guide strip 204 and the anti-rotation guide groove 102. The rotational motion of the adjusting nut 203 is converted into linear movement of the guide member 2 along the axial direction. The guide member 2 drives the limiting shoulder 202 to move synchronously, thereby compressing or releasing the first elastic element 3 and adjusting the pre-compression amount of the first elastic element 3. After adjustment, the thread self-locking force between the adjusting nut 203 and the end face of the guide sleeve 101 remains in the current position, without the need for additional locking operation. The limiting shoulder 202 moves with the guide member 2 and compresses or releases the first elastic element 3. The first elastic element 3 is sleeved on the outside of the guide member 2 and its two ends abut against the limiting shoulder 202 and the end face of the guide sleeve 101 respectively to provide a restoring force.

[0041] The anti-rotation guide strip 204 is fixed to the outer peripheral wall of the guide member 2 and extends axially through the anti-rotation connector 205. The anti-rotation guide strip 204 is embedded in the anti-rotation guide groove 102 and slides to maintain the linear movement of the guide member 2. The first hinge part 201 has a first hinge groove 206. The middle part of the balance arm 4 is hinged to the first hinge groove 206 through the first connecting pin 407. The swing limit blocks 207 are fixed on both sides of the top wall of the first hinge groove 206. The bottom surface of the swing limit block 207 is fixed with a buffer pad 208. When the balance arm 4 swings upward around the first connecting pin 407 to the limit, it contacts the buffer pad 208 and is blocked by the swing limit block 207 to limit the swing amplitude.

[0042] The balance arm 4 has a second hinge portion 401 and a clearance guide hole 402 at both ends. The second hinge portion 401 has a second hinge groove 409. A guide bushing 403 is embedded in the clearance guide hole 402. The top of the guide bushing 403 has a bushing limiting edge 404 that is engaged with the upper end face of the clearance guide hole 402. A guide sealing ring 406 is embedded in the inner wall limiting groove 405 of the inner wall of the guide bushing 403. The guide sealing ring 406 slides in contact with the outer peripheral wall of the guide post 501 to provide sealing and guidance. An upper elastic element seat 408 is fixed on the bottom surface of the balance arm 4. The support 408 is fitted onto the outside of the guide post 501 and aligned with the lower opening of the clearance guide hole 402. When the balance arm 4 swings, both ends move accordingly, and the guide bushing 403 slides relative to the guide post 501. A radial clearance is maintained between the clearance guide hole 402 and the guide post 501. When the balance arm 4 swings around the first connecting pin 407 and causes the axis of the clearance guide hole 402 to change angle, this radial clearance can accommodate a slight deviation of the guide post 501 relative to the clearance guide hole 402, ensuring that the guide post 501 slides smoothly without jamming. The radial clearance between the clearance guide hole 402 and the guide post 501 allows for smooth sliding without jamming when the balance arm 4 swings around the first connecting pin 407 and causes the axis of the clearance guide hole 402 to change angle.

[0043] The hinge ear plate 507 at the top of the secondary pressure plate 5 is placed in the second hinge groove 409 and is rotatably connected to the second hinge part 401 through the second connecting pin 508. A wear-resistant bushing 509 is sleeved on the outer periphery of the second connecting pin 508 to reduce rotational friction. The guide post 501 on the secondary pressure plate 5 passes through the guide bushing 403 and extends above the balance arm 4. A threaded connector 510 is fixed at the top of the guide post 501. An anti-loosening block 7 is sleeved on the threaded connector 510 and abuts against the top of the guide post 501. A locking washer 701 and an anti-loosening nut 702 are sequentially sleeved on the anti-loosening block 7. The anti-loosening nut 702... When tightened, the locking washer 701 and the anti-disengagement block 7 are pressed to prevent the guide post 501 from sliding downwards and disengaging; the lower elastic element seat 502 is fixed on the top surface of the secondary pressure plate 5 and is coaxial with the guide post 501; the contact pad 503 is fixed on the bottom surface; the roller mounting bracket 504 is fixed at the bottom; the pressing roller 506 is rotatably installed in the roller mounting bracket 504 through the roller central shaft 505; when the secondary pressure plate 5 is under force, the contact pad 503 and the pressing roller 506 are in contact with the workpiece surface, the pressing roller 506 rolls to reduce friction, the secondary pressure plate 5 swings around the second connecting pin 508 and drives the guide post 501 to slide along the guide bushing 403.

[0044] The second elastic element 6 is sleeved outside the guide post 501, with its two ends extending into the upper elastic element seat 408 and the lower elastic element seat 502 respectively, and abutting between the balance arm 4 and the auxiliary pressure plate 5. The telescopic protective cover 601 connects the upper elastic element seat 408 and the lower elastic element seat 502 and covers the outer periphery of the second elastic element 6. The two ends of the telescopic protective cover 601 are fixed to the upper elastic element seat 408 and the lower elastic element seat 502 by connecting pressure rings 602. When the auxiliary pressure plate 5 moves relative to the balance arm 4, the lower elastic element seat 502 changes the distance between itself and the upper elastic element seat 408 accordingly. The second elastic element 6 is compressed or extended and provides a reaction force. The telescopic protective cover 601 synchronously extends and retracts to protect the second elastic element 6, and the connecting pressure rings 602 maintain a sealed connection.

[0045] In the overall linkage, the workpiece contour pushes the clamping roller 506 and the contact pad 503, causing the secondary pressure plate 5 to swing and compress the second elastic element 6. The elastic force is transmitted to both ends of the balance arm 4 through the upper elastic element seat 408, driving the balance arm 4 to swing around the first connecting pin 407. The middle part of the balance arm 4 pushes the guide 2 to slide and compress the first elastic element 3 through the first hinge part 201, realizing two-stage buffer elastic clamping. The adjusting nut 203 adjusts the preload, the anti-rotation guide strip 204 and the anti-rotation guide groove 102 prevent rotation, the swing limit block 207 and the buffer pad 208 limit the movement, the anti-disengagement block 7, the locking washer 701 and the anti-loosening nut 702 restrict the axial movement of the guide column 501, the wear-resistant bushing 509 reduces friction, and the telescopic protective cover 601 protects the second elastic element 6.

[0046] Example 2:

[0047] Based on Embodiment 1, the solution in Embodiment 1 will be further described in detail below, with reference to the specific working method described in detail:

[0048] Furthermore, the guide bushing 403 is embedded in the clearance guide hole 402 and the bushing limiting edge 404 abuts against the upper end face of the clearance guide hole 402. The guide post 501 passes through the guide bushing 403 and slides along the inner wall of the guide bushing 403. The inner wall limiting groove 405 is opened in the inner wall of the guide bushing 403 and accommodates the guide sealing ring 406. The guide sealing ring 406 slides and fits against the outer peripheral wall of the guide post 501. When the guide post 501 slides relative to the guide bushing 403, the guide sealing ring 406 maintains contact with the guide post 501 and provides sealing and guiding functions.

[0049] Furthermore, the upper elastic element seat 408 is fixed to the bottom surface of the balance arm 4 and sleeved outside the clearance guide hole 402, the lower elastic element seat 502 is fixed to the top surface of the auxiliary pressure plate 5 and coaxially arranged with the guide post 501, the two ends of the second elastic element 6 extend into the upper elastic element seat 408 and the lower elastic element seat 502 respectively, the telescopic protective cover 601 connects the upper elastic element seat 408 and the lower elastic element seat 502 and covers the outside of the second elastic element 6, the two ends of the telescopic protective cover 601 are fixed to the upper elastic element 408 and the lower elastic element seat 502 respectively through the connecting pressure ring 602. At the base 408 and the lower elastic element base 502, when the auxiliary pressure plate 5 swings or moves relative to the balance arm 4, the guide post 501 slides along the avoidance guide hole 402, the lower elastic element base 502 moves with the auxiliary pressure plate 5, the distance between the upper elastic element base 408 and the lower elastic element base 502 changes accordingly, the second elastic element 6 is compressed or reset, the telescopic protective cover 601 expands and contracts synchronously with the change of distance, and the connecting pressure ring 602 keeps the two ends of the telescopic protective cover 601 sealed and fitted with the upper elastic element base 408 and the lower elastic element base 502.

[0050] Furthermore, the contact pad 503 is fixed to the bottom surface of the sub-pressure plate 5 and moves with the sub-pressure plate 5. The roller mounting bracket 504 is set at the bottom of the sub-pressure plate 5 and fixedly connected to the sub-pressure plate 5. The roller central shaft 505 passes through the roller mounting bracket 504. The pressing roller 506 is sleeved on the roller central shaft 505 and rotates around the roller central shaft 505. When the sub-pressure plate 5 is pressed down or swings, the contact pad 503 contacts the workpiece surface. The roller mounting bracket 504 drives the pressing roller 506 to move synchronously. The pressing roller 506 rolls around the roller central shaft 505 to reduce friction and adapt to the workpiece surface contour.

[0051] Furthermore, the guide sleeve 101 is fixedly installed inside the support mounting base 1. The guide member 2 passes through the guide sleeve 101 and slides along the inner wall of the guide sleeve 101. The limiting shoulder 202 is installed on the outer peripheral wall of the guide member 2 and moves synchronously with the guide member 2. The first elastic member 3 is sleeved on the outside of the guide member 2 and its top end abuts against the bottom surface of the limiting shoulder 202. The adjusting nut 203 is threadedly connected to the top end of the guide member 2. When the guide member 2 slides along the guide sleeve 101 under the action of external force, the limiting shoulder 202 moves with the guide member 2 and compresses or releases the first elastic member 3. When the adjusting nut 203 rotates at the top end of the guide member 2, it drives the guide member 2 to move along the guide sleeve 101 to change the initial position of the limiting shoulder 202, thereby adjusting the compression deformation of the first elastic member 3.

[0052] Furthermore, the anti-rotation guide strip 204 is disposed on the outer peripheral wall of the guide member 2 and extends along the axial direction of the guide member 2. The anti-rotation guide groove 102 is formed on the inner peripheral wall of the support mounting base 1 and extends along the axial direction of the support mounting base 1. The anti-rotation guide strip 204 is slidably engaged in the anti-rotation guide groove 102 and slides synchronously with the guide member 2. The anti-rotation connector 205 fixes the anti-rotation guide strip 204 to the outer peripheral wall of the guide member 2. When the guide member 2 slides along the support mounting base 1, the anti-rotation guide strip 204 slides along the anti-rotation guide groove 102 and restricts the guide member 2 from rotating around its own axis. The inner wall of the anti-rotation guide groove 102 and the outer wall of the anti-rotation guide strip 204 slide in cooperation to provide anti-rotation guidance. The anti-rotation connector 205 maintains the fixed connection between the anti-rotation guide strip 204 and the guide member 2, so that the anti-rotation guide strip 204 moves synchronously with the guide member 2.

[0053] Furthermore, a first hinge groove 206 is formed at the bottom of the first hinge portion 201, the middle part of the balance arm 4 is placed in the first hinge groove 206, a first connecting pin 407 passes through the middle part of the balance arm 4 and is rotatably connected to the groove wall of the first hinge groove 206, the balance arm 4 swings around the first connecting pin 407, the swing limiting blocks 207 are symmetrically arranged on both sides of the inner top wall of the first hinge groove 206 and fixed to the first hinge portion 201, and the buffer pads 208 are fixed to the bottom surface of each swing limiting block 207. When the balance arm 4 swings around the first connecting pin 407 to contact the buffer pads 208, the buffer pads 208 are compressed to limit the swing amplitude of the balance arm 4 and provide a buffering effect. The swing angle of the balance arm 4 is limited by the position of the swing limiting blocks 207 and the buffer pads 208.

[0054] Furthermore, a second hinge groove 409 is formed in the second hinge portion 401, a hinge ear plate 507 is disposed at the top of the auxiliary pressure plate 5, a second connecting pin 508 passes through the hinge ear plate 507 and the groove wall of the second hinge groove 409, the hinge ear plate 507 rotates around the second connecting pin 508, and a wear-resistant bushing 509 is sleeved on the outer peripheral wall of the second connecting pin 508 and located between the second connecting pin 508 and the groove wall of the hinge ear plate 507 and the second hinge groove 409. When the auxiliary pressure plate 5 swings, the hinge ear plate 507 rotates around the second connecting pin 508, and the wear-resistant bushing 509 rotates with the second connecting pin 508 or remains fixed relative to the second connecting pin 508. The outer peripheral wall of the wear-resistant bushing 509 slides in contact with the hinge ear plate 507 and the groove wall of the second hinge groove 409 to reduce rotational friction wear.

[0055] Furthermore, the threaded connector 510 is disposed at the top of the guide post 501 and fixedly connected to the guide post 501. The anti-loosening block 7 is sleeved on the outside of the threaded connector 510 and abuts against the top end face of the guide post 501. The locking washer 701 is sleeved on the outer peripheral wall of the threaded connector 510 and located above the anti-loosening block 7. The anti-loosening nut 702 is threadedly connected to the outer peripheral wall of the threaded connector 510 and located above the locking washer 701. When the cap 702 is tightened, it presses down on the locking washer 701, which in turn presses down on the anti-loosening block 7, fixing the anti-loosening block 7 to the top of the guide post 501. When the guide post 501 slides along the clearance guide hole 402, the threaded connector 510, the anti-loosening block 7, the locking washer 701, and the anti-loosening nut 702 move synchronously with the guide post 501. The anti-loosening nut 702 maintains the clamping force on the anti-loosening block 7 through the locking washer 701 to prevent loosening.

[0056] Furthermore, the mounting flange 103 is disposed on the outer peripheral wall of the support mounting base 1 and is fixedly connected to the support mounting base 1. The reinforcing ribs 104 are arranged in a circumferential array between the outer peripheral wall of the support mounting base 1 and the top surface of the mounting flange 103. One side of each reinforcing rib 104 is fixedly connected to the outer peripheral wall of the support mounting base 1 and the other side is fixedly connected to the top surface of the mounting flange 103. The locating pin holes 105 penetrate the mounting flange 103 and are arranged in a circumferential array. When the mounting flange 103 is positioned with the external mounting surface through the locating pin holes 105, the locating pins are inserted into the locating pin holes 105 and fix the mounting flange 103 to the external mounting surface. The reinforcing ribs 104 provide reinforced support between the support mounting base 1 and the mounting flange 103 to resist external forces.

[0057] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0058] Secondly, the accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other.

[0059] Finally, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A double-plate elastic clamping structure for circuit board processing, characterized in that, include: Support mounting base; A guide member is slidably disposed within the support mounting base, a first elastic member is provided between the guide member and the support mounting base, and a first hinge portion is provided at the bottom end of the guide member; A balance arm, the middle part of which is rotatably connected to the first hinge part, and both ends of the balance arm are provided with a second hinge part and a clearance guide hole; There are two auxiliary pressure plates, and the two auxiliary pressure plates are rotatably connected to the corresponding second hinge part. Each auxiliary pressure plate is provided with a guide post passing through the corresponding avoidance guide hole. The second elastic element is sleeved outside the guide post and abuts against the balance arm and the corresponding secondary pressure plate.

2. The double-plate elastic clamping structure for circuit board processing according to claim 1, characterized in that: The guide bushing is provided in the avoidance guide hole, and the guide post slides through the guide bushing; the top of the guide bushing is provided with a bushing limiting edge, and the inner peripheral wall of the guide bushing is provided with an inner wall limiting groove, and a guide sealing ring that slides and fits against the outer peripheral wall of the guide post is embedded in the inner wall limiting groove.

3. The double-plate elastic clamping structure for circuit board processing according to claim 1, characterized in that: The bottom surface of the balance arm is provided with an upper elastic element seat that is sleeved outside the avoidance guide hole, and the top surface of the auxiliary pressure plate is provided with a lower elastic element seat that is coaxially arranged with the guide post; the two ends of the second elastic element extend into the upper elastic element seat and the lower elastic element seat respectively; a telescopic protective cover covering the second elastic element is provided between the upper elastic element seat and the lower elastic element seat, and the two ends of the telescopic protective cover are respectively set at the upper elastic element seat and the lower elastic element seat through connecting pressure rings.

4. The double-plate elastic clamping structure for circuit board processing according to claim 1, characterized in that: The bottom surface of the sub-pressure plate is provided with a contact pad, and the bottom of the sub-pressure plate is provided with a roller mounting bracket, and a pressing roller is rotatably provided in the roller mounting bracket through the roller central shaft.

5. The double-plate elastic clamping structure for circuit board processing according to claim 1, characterized in that: The support mounting base is provided with a guide sleeve, and the guide member slides through the guide sleeve; the outer peripheral wall of the guide member is provided with a limiting shoulder, the first elastic member is sleeved on the outside of the guide member and the top end of the first elastic member abuts against the bottom surface of the limiting shoulder; the top end of the guide member is threadedly connected with an adjusting nut.

6. The double-plate elastic clamping structure for circuit board processing according to claim 1, characterized in that: The outer peripheral wall of the guide member is provided with an anti-rotation guide strip along the axial direction, and the inner peripheral wall of the support mounting base is provided with an anti-rotation guide groove along the axial direction. The anti-rotation guide strip is slidably engaged in the anti-rotation guide groove. The anti-rotation guide strip is connected to the guide member through multiple anti-rotation connectors.

7. The double-plate elastic clamping structure for circuit board processing according to claim 1, characterized in that: The bottom of the first hinge part is provided with a first hinge groove, the middle part of the balance arm is placed in the first hinge groove and is rotatably connected to the groove wall of the first hinge groove through a first connecting pin; the inner top wall of the first hinge groove is symmetrically provided with swing limiting blocks on both sides, and the bottom surface of each swing limiting block is provided with a buffer pad.

8. The double-plate elastic clamping structure for circuit board processing according to claim 1, characterized in that: The second hinge part has a second hinge groove; the top of the auxiliary pressure plate has a hinge ear plate, which is placed in the second hinge groove and is rotatably connected to the groove wall of the second hinge groove through a second connecting pin; the outer peripheral wall of the second connecting pin is fitted with a wear-resistant bushing.

9. The double-plate elastic clamping structure for circuit board processing according to claim 1, characterized in that: The top of the guide post is provided with a threaded connector; an anti-loosening block is sleeved on the outside of the threaded connector, and a locking washer is sequentially sleeved on the outer peripheral wall of the threaded connector and above the anti-loosening block and threaded with an anti-loosening nut.

10. The double-plate elastic clamping structure for circuit board processing according to claim 1, characterized in that: The outer peripheral wall of the support mounting base is provided with a mounting flange, and a plurality of reinforcing ribs are arranged in a circular array between the outer peripheral wall of the support mounting base and the top surface of the mounting flange; the mounting flange is provided with a circumferentially arranged locating pin hole.

Images