Positioning tool for processing CPE product circuit board

Abstract

The invention discloses a positioning tool for machining a CPE product circuit board in the technical field of printed circuit board machining, and aims to solve the problems that an existing tool is poor in adaptability to special-shaped circuit boards, low in clamping precision, tedious in operation and the like. The positioning tool comprises a positioning rack, a main clamping mechanism and an auxiliary fixing mechanism. Flexible clamping pieces of the main clamping mechanism are distributed in a radial mode, synchronous contraction or diffusion is achieved through a driving piece, and the main clamping mechanism automatically adapts to circuit boards of different shapes and accurately clamps and positions the circuit boards. The auxiliary fixing mechanism performs preliminary positioning through vacuum adsorption, and the clamping precision is guaranteed; the flexible clamping piece is provided with a trigger piece and a locking piece which are composed of a buffer spring, a piezoelectric ceramic sensor, an electromagnet and the like, automatic locking is achieved, and the clamping stability is improved. The positioning tool is high in adaptability, can be suitable for CPE product circuit boards of various shapes, is high in clamping precision, is convenient to operate, is good in stability, is high in intelligent degree, and effectively improves the machining efficiency and the product quality.

Description

Technical Field

[0001] The invention relates to the technical field of printed circuit board processing, in particular to a positioning tool for processing a CPE product circuit board. Background Art

[0002] In the processing links such as placement, welding and testing of printed circuit boards, positioning tooling must ensure the precise alignment of the circuit board and the processing equipment. The current mainstream technical solutions include the following types: 1. Rigid clamping tooling: using fixed clamps or positioning pins to clamp the edge of the circuit board through mechanical pressure (such as patent CN202022307951.7). Although this type of tooling has a simple structure, it is only suitable for standard rectangular circuit boards and has poor adaptability to special-shaped boards (such as curved edges and polygonal notches). Forced clamping can easily lead to local stress concentration, causing micro-cracks on the circuit board or pad detachment; 2. Multi-directional adjustment tooling: manually adjust the positions of multiple independent clamping blocks to match the special-shaped contour (such as patent CN119057717A). However, the adjustment process relies on manual experience, the changeover takes a long time (usually > 10 minutes), and the clamping blocks are not synchronized enough, which can easily cause patch deviation (error > ±0.1mm); 3. Vacuum adsorption tooling: Using negative pressure to fix the circuit board (such as patent CN109333581B) can avoid physical contact damage, but it has strict requirements on the flatness of the circuit board and is prone to deviation during the processing.

[0003] With the urgent demand for circuit board integration and special-shaped design in 5G communications and IoT devices (such as the curved layout of CPE millimeter wave antenna boards), traditional positioning tooling has been unable to meet the process requirements of high precision, high flexibility and low damage. Although some improvement schemes have tried to introduce modular design (such as the adjustable support column of patent CN202323605140) or pressure feedback mechanism, its core clamping structure is still limited by the rigid drive principle and cannot achieve true adaptive dynamic adjustment.

[0004] In response to the above problems, this application document provides a positioning tool for processing CPE product circuit boards. Summary of the invention

[0005] The purpose of the present invention is to solve the problems raised in the above background technology. The present invention provides a positioning tool for processing CPE product circuit boards.

[0006] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions: A positioning tool for processing a CPE product circuit board, comprising a positioning stand, a main clamping mechanism and an auxiliary fixing mechanism, wherein: The top side of the positioning platform is horizontally arranged, and the circuit board is placed on the top side of the positioning platform; The main clamping mechanism is installed on the positioning platform, and the main clamping mechanism includes a plurality of flexible clamping members and a driving member. The plurality of flexible clamping members are radially and arrayed on the top of the positioning platform, and the driving member is used to drive the plurality of flexible clamping members to shrink or spread synchronously. When clamping and positioning the circuit board, the driving member controls the plurality of flexible clamping members to shrink synchronously. When one of the flexible clamping members touches one side of the circuit board, the movement stops, and the remaining flexible clamping members continue to move until the last flexible clamping member stops moving, so that the circuit board can be clamped and positioned; The auxiliary fixing mechanism is installed on the positioning platform, and the auxiliary fixing mechanism is used to preliminarily position the circuit board to ensure that the main clamping mechanism accurately clamps and positions the circuit board.

[0007] Furthermore, the cross-section of the positioning platform is circular, the top of the positioning platform is configured with a plurality of slide grooves, the plurality of flexible clamping members correspond to the plurality of slide grooves respectively, the flexible clamping member comprises a moving rod sliding inside the slide groove, the driving member is used to control the synchronous contraction or synchronous expansion of the plurality of moving rods, a limiting groove is configured along the length direction on the inner wall of one side of the slide groove, a limiting block sliding inside the limiting groove is fixed on one side of the moving rod, an adjusting groove is configured on the top side of the moving rod along the length direction, an adjusting block is slidably installed inside the adjusting groove, a clamping rod is fixed on one side of the adjusting block, A cylindrical rubber sleeve is installed at the end of the clamp rod, and a buffer spring and a trigger member are arranged inside the rubber sleeve. A locking member is arranged inside the adjusting block. When the buffer spring is not subjected to force, the adjusting block is fixed in the adjusting groove by the locking member. When the buffer spring is compressed, the locking member is controlled by the trigger member to fix the adjusting block on the positioning platform and release the fixation with the adjusting groove. When the driving member controls several of the moving rods to spread to the initial position synchronously, the adjusting block is fixed to the initial position in the adjusting groove by the locking member and releases the fixing relationship with the positioning platform.

[0008] Furthermore, a clamping plate is installed on one end of the rubber sleeve away from the clamping rod, the trigger member includes a piezoelectric ceramic sensor installed on the other end of the rubber sleeve, the buffer spring is connected between the clamping plate and the piezoelectric ceramic sensor, the interior of the adjustment block is structured with a mounting groove, the trigger member also includes an electromagnet installed in the mounting groove, and the piezoelectric ceramic sensor is electrically connected to the electromagnet.

[0009] Furthermore, a connecting groove connected to the adjusting groove is constructed on the side of the moving rod facing away from the limit block, and one side of the adjusting block slides inside the connecting groove, and a device groove is constructed on the side of the adjusting block facing away from the limit block, and the device groove is connected to the installation groove, and the locking member includes a locking rod movably inserted inside the device groove, and a positioning groove is constructed on the inner wall of the adjusting groove, and one end of the locking rod movably passes through the adjusting block, and when the buffer spring is not subjected to force, one end of the locking rod passes through the adjusting block and is movably inserted inside the positioning groove, and a plurality of slots distributed in an array are constructed on the side of the sliding groove opposite to the limit groove, and when the buffer spring is compressed, one end of the locking rod disengages from the positioning groove and the other end of the locking rod is inserted into the inside of one of the slots.

[0010] Furthermore, a control plate sliding inside the device slot is fixed on the locking rod, an iron block corresponding to the electromagnet is fixedly mounted on the control plate, and a return spring is connected between the control plate and the inner wall of the device slot.

[0011] Furthermore, the cross section of the slot is angular and two adjacent slots are connected, and the other end of the locking rod is constructed into a wedge shape corresponding to the slot.

[0012] Furthermore, an annular assembly groove is constructed on the outer circumference of the positioning platform, the slide groove is communicated with the assembly groove, the driving member includes a gear ring rotatably mounted on the inner wall of the assembly groove and coaxial with the positioning platform, the teeth of the gear ring are constructed on the inner circumference, and a plurality of racks are movably arranged inside the assembly groove, the number of the racks is the same as the number of the moving rods and corresponds one to one, the racks are fixed to the bottom of the corresponding moving rods and are arranged along the length direction of the moving rod, a plurality of linkage gears are rotatably installed between the upper and lower inner walls of the assembly groove, the number of the linkage gears is the same as the number of the racks and corresponds one to one, the linkage gears are meshed with the corresponding racks, and a plurality of the linkage gears are meshed with the gear ring, and the driving member also includes a driving part for controlling the rotation of the gear ring.

[0013] Furthermore, the driving part includes a servo motor and a driving gear. The servo motor is installed at the bottom of the positioning platform and its output shaft movably penetrates into the interior of the assembly groove. The driving gear is located inside the assembly groove and fixedly sleeved on the output shaft of the servo motor.

[0014] Furthermore, the auxiliary fixing mechanism includes a supporting box installed through the middle of the positioning platform, the interior of the supporting box is configured with a vacuum chamber, the top of the supporting box is configured with a plurality of adsorption holes connected to the vacuum chamber, and the auxiliary fixing mechanism also includes a vacuum pump arranged at the bottom of the positioning platform and the suction end is connected to the vacuum chamber.

[0015] Furthermore, the top side of the carrying box is higher than the top side of the positioning stand and lower than the top side of the rubber sleeve.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. This solution is different from the rigid clamping tooling in the prior art that is only applicable to standard rectangular circuit boards. The main clamping mechanism of the present invention includes a number of flexible clamping parts that are radially distributed in an array, which can automatically adjust the clamping position according to the shape of the circuit board, and adapt to CPE product circuit boards of different shapes, including circuit boards with special-shaped structures such as curved edges and polygonal notches, effectively avoiding the problem of local stress concentration caused by forced clamping, and reducing the risk of micro-cracks on the circuit board or pad detachment.

[0017] 2. The present invention controls the flexible clamping members to shrink or expand synchronously through a driving member. During the clamping process, when one of the flexible clamping members touches one side of the circuit board, the movement stops, and the remaining flexible clamping members continue to move until the last flexible clamping member stops moving, so that the circuit board can be accurately clamped and positioned. Compared with the multi-directional adjustment tooling in the prior art that relies on manual experience to adjust the position of the clamping block, the changeover is time-consuming and the clamping block has insufficient synchronization, the positioning tooling of the present invention can achieve fast and accurate clamping and positioning, significantly improves the clamping accuracy, effectively avoids the patch offset phenomenon, and the error can be controlled within a smaller range.

[0018] 3. When the positioning tool of the present invention clamps and positions the circuit board, the movement of the flexible clamping member is automatically controlled by the driving member, and there is no need to manually adjust the position of the clamping block, which greatly reduces the changeover time and improves work efficiency. At the same time, the auxiliary fixing mechanism performs preliminary positioning of the circuit board through vacuum adsorption, further ensuring the accurate clamping and positioning of the circuit board by the main clamping mechanism, and the operation process is simple and convenient.

[0019] 4. The trigger member and locking member composed of the buffer spring, piezoelectric ceramic sensor, electromagnet, etc. arranged on the flexible clamping member in the present invention can realize automatic locking during the clamping process to ensure the stability of the clamping member in the clamping state. When the buffer spring is compressed, the locking member is controlled by the trigger member to fix the adjustment block on the positioning stand, and at the same time release the fixation with the adjustment slot, so that the clamping member can firmly clamp the circuit board, avoiding the circuit board deviation caused by unstable clamping during the processing process.

[0020] 5. The cross-section of the positioning stand in the present invention is circular, and a slide groove is constructed on the top. The flexible clamp slides in the slide groove through the moving rod. The limit groove on the inner wall of one side of the slide groove cooperates with the limit block on the moving rod to ensure the stable movement of the clamp. At the same time, the cross-section of the slot is angular and two adjacent slots are connected. The other end of the locking rod is constructed as a wedge corresponding to the slot. This structural optimization further enhances the locking effect and adaptability of the clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 For the present invention Figure 1 A three-dimensional cross-sectional view of Figure 3 For the present invention Figure 2 A magnified view of the structure in center A; Figure 4 For the present invention Figure 1 A three-dimensional cross-sectional view from another direction; Figure 5 For the present invention Figure 4 A magnified view of the structure in center B; Figure 6 For the present invention Figure 1 Schematic diagram of the three-dimensional structure of the middle part; Figure 7 For the present invention Figure 7 Schematic diagram of the three-dimensional structure of the middle part; Figure 8 For the present invention Figure 7 Partial structural view of a three-dimensional cross-section view in a certain direction; Fig. 9 This is a schematic diagram of the three-dimensional structure of the present invention when positioning a circuit board.

[0022] In the figure: 1, positioning stand; 11, slide slot; 111, limit slot; 112, slot; 12, assembly slot; 2, main clamping mechanism; 21, flexible clamping member; 211, moving rod; 2111, connecting slot; 212, limit block; 213, adjustment slot; 2131, positioning slot; 214, adjustment block; 2141, installation slot; 2142, installation slot; 215, clamping rod; 216, rubber sleeve; 2161, clamping plate; 217, buffer spring; 218, trigger member ; 2181, piezoelectric ceramic sensor; 2182, electromagnet; 219, locking piece; 2191, locking rod; 2192, control board; 2193, iron block; 2194, reset spring; 22, driving piece; 221, gear ring; 222, rack; 223, connecting gear; 224, driving part; 2241, servo motor; 2242, driving gear; 3, auxiliary fixing mechanism; 31, carrying box; 32, vacuum chamber; 33, adsorption hole; 34, vacuum pump. DETAILED DESCRIPTION

[0023] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0024] The positioning tool for processing CPE product circuit boards provided in this embodiment is mainly used to solve the defects of existing CPE product circuit board positioning tooling. The current mainstream technical solutions include the following types: 1. Rigid clamping tooling: using fixed clamps or positioning pins to clamp the edge of the circuit board through mechanical pressure (such as patent CN202022307951.7). Although this type of tooling has a simple structure, it is only suitable for standard rectangular circuit boards and has poor adaptability to special-shaped boards (such as arc edges and polygonal notches). Forced clamping can easily lead to local stress concentration, causing micro-cracks on the circuit board or pad detachment; 2. Multi-directional adjustment tooling: manually adjusting the position of multiple independent clamping blocks to match the special-shaped contour (such as patent CN119057717A). However, the adjustment process relies on manual experience, the changeover takes a long time (usually > 10 minutes), and the clamping block is not synchronized enough, which can easily cause the patch to shift (error > ±0.1mm); 3. Vacuum adsorption tooling: using negative pressure to adsorb and fix the circuit board (such as patent CN109333581B), although it can avoid physical contact damage, it has strict requirements on the flatness of the circuit board, and it is easy to shift during the processing process. The following technical solutions are provided, which will be combined with Figure 1-Figure 9 Make a detailed description: Embodiment 1:

[0025] A positioning tool for processing a CPE product circuit board comprises a positioning stand 1, a main clamping mechanism 2 and an auxiliary fixing mechanism 3, wherein: The top side of the positioning stand 1 is horizontally arranged, and the circuit board is placed on the top side of the positioning stand 1; The main clamping mechanism 2 is installed on the positioning platform 1. The main clamping mechanism 2 includes a plurality of flexible clamping members 21 and a driving member 22. The plurality of flexible clamping members 21 are radially arranged in an array on the top of the positioning platform 1. The driving member 22 is used to drive the plurality of flexible clamping members 21 to shrink or spread synchronously. When clamping and positioning the circuit board, the driving member 22 controls the plurality of flexible clamping members 21 to shrink synchronously. When one of the flexible clamping members 21 touches one side of the circuit board, the movement stops, and the remaining flexible clamping members 21 continue to move until the last flexible clamping member 21 stops moving, so that the circuit board can be clamped and positioned. The auxiliary fixing mechanism 3 is installed on the positioning platform 1, and the auxiliary fixing mechanism 3 is used for preliminarily positioning the circuit board to ensure that the main clamping mechanism 2 accurately clamps and positions the circuit board.

[0026] During the specific operation, the circuit board is first placed on the top side of the positioning platform 1, and the auxiliary fixing mechanism 3 performs preliminary positioning, and then the driving member 22 drives the flexible clamping member 21 to contract, touch the circuit board in turn and stop moving, and finally complete the clamping positioning. In this embodiment, the layout and driving method of the flexible clamping member 21 enable the positioning tool to adapt to circuit boards of different shapes, improve the clamping accuracy and stability, reduce the risk of damage to the circuit board, simplify the operation process, and improve the processing efficiency, which has good application prospects and practical value.

[0027] For details, please refer to Figure 2-Figure 8 The cross section of the positioning platform 1 is circular, and a plurality of slide grooves 11 are constructed on the top of the positioning platform 1. A plurality of flexible clamping members 21 correspond to the plurality of slide grooves 11 one by one. The flexible clamping member 21 includes a moving rod 211 sliding inside the slide groove 11, and a driving member 22 is used to control the synchronous contraction or synchronous expansion of the plurality of moving rods 211. A limiting groove 111 is constructed on the inner wall of one side of the slide groove 11 along the length direction, and a limiting block 212 sliding inside the limiting groove 111 is fixed on one side of the moving rod 211 to limit the sliding direction of the moving rod 211 and ensure its stable movement. An adjusting groove 213 is constructed on the top side of the moving rod 211 along the length direction, and an adjusting block 214 is slidably installed inside the adjusting groove 213. A clamping rod 215 is fixed on one side of the adjusting block 214, and a cylindrical rubber sleeve 21 is installed on the end of the clamping rod 215 6. A buffer spring 217 and a trigger member 218 are provided inside the rubber sleeve 216, and a locking member 219 is provided inside the adjusting block 214. When the buffer spring 217 is not subjected to force, the adjusting block 214 is fixed in the adjusting groove 213 by the locking member 219 to ensure the initial stable state of the flexible clamping member 21; when the buffer spring 217 is compressed, the trigger member 218 controls the locking member 219 to fix the adjusting block 214 on the positioning platform 1, and at the same time releases the fixation with the adjusting groove 213 to achieve stable locking of the clamping action; when the driving member 22 controls the moving rod 211 to diffuse to the initial position synchronously, the adjusting block 214 is fixed in the initial position in the adjusting groove 213 by the locking member 219, and at the same time releases the fixing relationship with the positioning platform 1, completing the resetting of the flexible clamping member 21 and preparing for the next clamping operation.

[0028] This structural design enables the flexible clamping member 21 to flexibly switch states during the clamping and releasing process, ensuring the stability and reliability of the clamping. At the same time, through the cooperation of the buffer spring 217 and the trigger member 218, adaptive clamping of circuit boards of different shapes is achieved, the clamping accuracy is improved, and damage to the circuit board is avoided, which effectively improves the practicality and adaptability of the positioning tooling.

[0029] Further, a clamping plate 2161 is installed on one end of the rubber sleeve 216 away from the clamping rod 215, the triggering member 218 includes a piezoelectric ceramic sensor 2181 installed on the other end of the rubber sleeve 216, the buffer spring 217 is connected between the clamping plate 2161 and the piezoelectric ceramic sensor 2181, the adjustment block 214 is internally structured with a mounting groove 2141, the triggering member 218 also includes an electromagnet 2182 installed in the mounting groove 2141, and the piezoelectric ceramic sensor 2181 is electrically connected to the electromagnet 2182; When the buffer spring 217 is compressed, the piezoelectric ceramic sensor 2181 senses the pressure change and generates an electrical signal, which is transmitted to the electromagnet 2182, causing the electromagnet 2182 to generate magnetism after being energized, thereby controlling the action of the locking member 219 to fix or release the adjustment block 214 and the positioning stand 1. This design enables the flexible clamping member 21 to automatically sense the change in clamping force when clamping the circuit board, and to achieve automatic locking through the control of the electromagnet 2182, thereby improving the stability and reliability of the clamping, while avoiding the problem of circuit board damage or loose clamping due to excessive or insufficient clamping force, further improving the intelligence and clamping accuracy of the positioning tooling.

[0030] Furthermore, a connecting groove 2111 connected to the adjusting groove 213 is constructed on the side of the moving rod 211 facing away from the limiting block 212, and a side of the adjusting block 214 slides inside the connecting groove 2111 to realize the flexible movement and positioning of the adjusting block 214 on the moving rod 211. A mounting groove 2142 is constructed on the side of the adjusting block 214 facing away from the limiting block 212. The mounting groove 2142 is connected to the mounting groove 2141, providing space for the installation and action of the locking member 219. The locking member 219 includes a locking rod 2191 movably inserted in the mounting groove 2142. A positioning groove 2131 is constructed on the inner wall of the adjusting groove 213. One end of the rod 2191 movably penetrates the adjustment block 214. When the buffer spring 217 is not subjected to force, one end of the locking rod 2191 that penetrates the adjustment block 214 is movably inserted into the interior of the positioning groove 2131, so that the adjustment block 214 is fixed at the initial position in the adjustment groove 213. A plurality of slots 112 distributed in an array are constructed on the side of the slide groove 11 opposite to the limit slot 111. When the buffer spring 217 is subjected to force compression, one end of the locking rod 2191 is disengaged from the positioning groove 2131 and the other end of the locking rod 2191 is inserted into the interior of one of the slots 112, thereby fixing the adjustment block 214 on the positioning stand 1, and realizing stable locking of the clamping member. It should be noted that a control plate 2192 is fixed on the locking rod 2191 and slides inside the device groove 2142. An iron block 2193 corresponding to the electromagnet 2182 is fixed on the control plate 2192. A return spring 2194 is connected between the control plate 2192 and the inner wall of the device groove 2142. When the electromagnet 2182 is energized to generate magnetism, it can attract the iron block 2193, thereby driving the control plate 2192 and the locking rod 2191 to move, thereby realizing the locking function.

[0031] This design makes the locking member 219 more flexible and reliable, and can accurately lock and release the flexible clamping member 21, further improving the stability and reliability of the positioning tooling. At the same time, through the cooperation of the electromagnet 2182 and the return spring 2194, automatic control is realized, which improves work efficiency, reduces the difficulty and intensity of manual operation, and has good practicality and economy.

[0032] Specifically, Figure 3 It is a front view. When positioning the circuit board, the circuit board is placed on the top of the positioning platform 1. The driving member 22 drives several moving rods 211 to shrink synchronously. When one end of one of the rubber sleeves 216 contacts one side of the circuit board, the buffer spring 217 is compressed. At the same time, the piezoelectric ceramic sensor 2181 is pressed to generate an electrical signal. The electromagnet 2182 electrically connected to the piezoelectric ceramic sensor 2181 generates a magnetic force. At this time, the iron block 2193 will quickly approach the electromagnet 2182. The iron block 2193 drives the control board 2192 to move. The reset spring 2194 is compressed to generate elastic force, and one end of the locking rod 2191 is separated from the positioning groove 213. 1, and the other end is inserted into one of the slots 112. The adjustment block 214 is released from the adjustment slot 213 and is fixed to the positioning stand 1. As the driving member 22 runs, the moving rod 211 continues to move along the slide slot 11, and the adjustment block 214 slides inside the adjustment slot 213. As the force on the piezoelectric ceramic sensor 2181 tends to be stable, the magnetic force on the electromagnet 2182 gradually disappears, and the attraction to the iron block 2193 is lost. Under the elastic force of the reset spring 2194, one end of the locking rod 2191 fits on the inner wall of the adjustment slot 213 and slides upward until the last adjustment block 214 stops moving, completing the positioning and clamping of the circuit board. During resetting, as the driving member 22 drives several moving rods 211 to expand synchronously, when one end of the locking rod 2191 corresponds to the corresponding positioning groove 2131, under the elastic force of the reset spring 2194, one end of the locking rod 2191 is reinserted into the positioning groove 2131, and the other end is disengaged from the slot 112, thereby fixing the adjustment block 214 and the moving rod 211, and at the same time releasing the fixation with the positioning stand 1, and finally returning to the initial position, preparing for the next positioning and clamping.

[0033] In this embodiment, the number of the flexible clamping members 21 is six.

[0034] In order to drive the six flexible clamping members 21 to contract or expand synchronously, please refer to Figure 4 , Figure 6 , Figure 7 and Fig. 9 , an annular assembly groove 12 is constructed on the outer peripheral side of the positioning platform 1, the slide groove 11 is connected to the assembly groove 12, the driving member 22 includes a gear ring 221 rotatably mounted on the inner wall of the assembly groove 12 and coaxial with the positioning platform 1, the teeth of the gear ring 221 are constructed on the inner peripheral side, and a plurality of racks 222 are movably arranged inside the assembly groove 12, the number of racks 222 is the same as the number of moving rods 211 and corresponds one to one, the racks 222 are fixed to the bottom of the corresponding moving rods 211 and are arranged along the length direction of the moving rods 211, and a plurality of linkage gears 223 are rotatably installed between the upper and lower inner walls of the assembly groove 12, the number of linkage gears 223 is the same as the number of racks 222 and corresponds one to one, the linkage gears 223 are meshed with the corresponding racks 222, and the plurality of linkage gears 223 are all meshed with the gear ring 221, and the driving member 22 also includes a driving portion 224 for controlling the rotation of the gear ring 221; The gear ring 221 is controlled to rotate by the driving unit 224, and the gear ring 221 drives the interlocking gear 223 engaged therewith to rotate, thereby driving the rack 222 engaged with the interlocking gear 223 to move along the length direction of the moving rod 211, thereby achieving precise control of the synchronous contraction or synchronous expansion of the six flexible clamping members 21, ensuring the coordination and stability of the clamping action, improving the clamping accuracy and work efficiency, and meeting different processing requirements.

[0035] Specifically, the driving part 224 includes a servo motor 2241 and a driving gear 2242. The servo motor 2241 is installed at the bottom of the positioning platform 1 and the output shaft thereof movably penetrates the inside of the assembly groove 12. The driving gear 2242 is located inside the assembly groove 12 and is fixedly sleeved on the output shaft of the servo motor 2241. When the servo motor 2241 is started, the driving gear 2242 is driven to rotate through the output shaft, thereby realizing precise control of the gear ring 221, thereby driving the six flexible clamping members 21 to shrink or expand synchronously. This design makes the structure of the driving part 224 compact and easy to install. At the same time, through the precise control of the servo motor 2241, high-precision driving of the clamping members can be achieved, the stability and reliability of the clamping can be improved, and the requirements for circuit board clamping accuracy in different processing scenarios can be met. It has good practicality and economy.

[0036] In this embodiment, before the circuit board is precisely positioned, auxiliary positioning is required to prevent the circuit board from being offset due to the interference of the flexible clamping member 21. For details, please refer to Figure 2 and Figure 4The auxiliary fixing mechanism 3 includes a carrier box 31 installed through the middle of the positioning platform 1, the interior of the carrier box 31 is configured with a vacuum chamber 32, the top of the carrier box 31 is configured with a plurality of adsorption holes 33 connected to the vacuum chamber 32, and the auxiliary fixing mechanism 3 also includes a vacuum pump 34 arranged at the bottom of the positioning platform 1 and the suction end is connected to the vacuum chamber 32; Through the operation of the vacuum pump 34, negative pressure is formed in the vacuum chamber 32, so that the adsorption holes 33 generate adsorption force, which preliminarily fixes the circuit board on the top side of the positioning platform 1, providing a basis for the subsequent precise clamping and positioning of the main clamping mechanism 2, and effectively preventing the circuit board from shifting during the collision process of the flexible clamping member 21, ensuring the accuracy and reliability of positioning, and improving the processing quality and efficiency. Embodiment 2:

[0037] Embodiment 2 is a further optimization of embodiment 1. Figure 2-Figure 8 As shown, the cross section of the slot 112 is angular and two adjacent slots 112 are connected, and the other end of the locking rod 2191 is configured as a wedge shape corresponding to the slot 112; This design makes the locking rod 2191 more stable and reliable when inserted into the slot 112. The wedge-shaped structure can better cooperate with the slot 112, increase the tightness and firmness of the lock, further improve the stability of the flexible clamp 21 during the clamping process, and effectively prevent the flexible clamp 21 from loosening or falling off during the processing, ensuring the processing accuracy and quality. At the same time, it is also beneficial for the locking rod 2191 to be more accurately inserted into one of the slots 112 for positioning, reducing maintenance costs, and having better practicality and economy. Embodiment three:

[0038] Embodiment 3 is a further optimization of embodiment 1. Figure 1 and Figure 4 As shown, the top side of the carrying box 31 is higher than the top side of the positioning platform 1 and lower than the top side of the rubber sleeve 216 .

[0039] This design enables the supporting box 31 to better support the circuit board when assisting in positioning the circuit board, and prevents the circuit board from being deformed or damaged during the clamping process of the flexible clamping member 21. At the same time, since the top side of the supporting box 31 is lower than the top side of the rubber sleeve 216, it will not interfere with the clamping action of the flexible clamping member 21, thereby ensuring the smooth progress of the clamping process. In addition, this structural layout is reasonable, can effectively utilize space, improve the overall stability and reliability of the positioning tooling, further improve processing quality and efficiency, and has better practicality and economy.

[0040] When the positioning tool is in operation: First, the CPE product circuit board to be processed is placed on the top side of the positioning platform 1. At this time, the auxiliary fixing mechanism 3 plays a role, and the vacuum pump 34 inside it forms a negative pressure in the vacuum chamber 32, so that the adsorption hole 33 generates an adsorption force, and the circuit board is initially fixed on the top side of the positioning platform 1 to prevent the circuit board from shifting during the subsequent impact process of the flexible clamping member 21, providing a basis for accurate clamping and positioning; Secondly, the driving member 22 is started, driving several moving rods 211 to shrink synchronously. As the moving rods 211 shrink, the flexible clamping member 21 gradually approaches the circuit board. When one end of the rubber sleeve 216 of one of the flexible clamping members 21 contacts one side of the circuit board, the buffer spring 217 is compressed by force. At the same time, the piezoelectric ceramic sensor 2181 senses the pressure change and generates an electrical signal. The electrical signal is transmitted to the electromagnet 2182, so that it generates magnetism after being energized. The electromagnet 2182 attracts the iron block 2193 to drive the control board 2192 and the locking rod 2191 to move, thereby realizing the locking function. At this time, one end of the locking rod 2191 is disengaged from the positioning slot 2131, and the other end is inserted into the corresponding slot 112. The adjustment block 214 is released from the adjustment slot 213 and fixed to the positioning stand 1. Then the driving member 22 continues to operate, the moving rod 211 continues to move along the slide slot 11, and the adjusting block 214 slides in the adjusting slot 213 until all the flexible clamping members 21 complete the clamping action, thereby achieving accurate positioning and clamping of the circuit board; When it is necessary to release the circuit board for resetting, the driving member 22 drives several moving rods 211 to expand synchronously. When one end of the locking rod 2191 is aligned with the corresponding positioning groove 2131, under the elastic force of the reset spring 2194, one end of the locking rod 2191 is reinserted into the positioning groove 2131, and the other end is disengaged from the slot 112. The adjustment block 214 is fixed to the moving rod 211 and released from the positioning stand 1 at the same time, so that the flexible clamping member 21 returns to the initial position and is ready for the next positioning and clamping.

[0041] It should be noted that the specific models and specifications of the piezoelectric ceramic sensor 2181, the electromagnet 2182, the servo motor 2241 and the vacuum pump 34 need to be selected and determined based on the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be described in detail. The principles of these components are clear to those skilled in the art and do not need to be described in detail here.

[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A positioning tool for processing a CPE product circuit board, comprising a positioning stand (1), a main clamping mechanism (2) and an auxiliary fixing mechanism (3), characterized in that: in: The top side of the positioning stand (1) is arranged horizontally, and the circuit board is placed on the top side of the positioning stand (1); The main clamping mechanism (2) is mounted on the positioning platform (1), and the main clamping mechanism (2) comprises a plurality of flexible clamping members (21) and a driving member (22). The plurality of flexible clamping members (21) are radially arranged in an array on the top of the positioning platform (1), and the driving member (22) is used to drive the plurality of flexible clamping members (21) to shrink or expand synchronously. When clamping and positioning the circuit board, the driving member (22) controls the plurality of flexible clamping members (21) to shrink synchronously. When one of the flexible clamping members (21) touches one side of the circuit board, the movement stops, and the remaining flexible clamping members (21) continue to move until the last flexible clamping member (21) stops moving, so that the circuit board can be clamped and positioned. The auxiliary fixing mechanism (3) is mounted on the positioning platform (1), and the auxiliary fixing mechanism (3) is used to preliminarily position the circuit board to ensure that the main clamping mechanism (2) accurately clamps and positions the circuit board.

2. A positioning tool for processing a CPE product circuit board according to claim 1, characterized in that: The cross section of the positioning platform (1) is circular. The top of the positioning platform (1) is configured with a plurality of slide grooves (11). The plurality of flexible clamping members (21) correspond to the plurality of slide grooves (11) one by one. The flexible clamping member (21) comprises a moving rod (211) that slides inside the slide groove (11). The driving member (22) is used to control the synchronous contraction or synchronous expansion of the plurality of moving rods (211). A limiting groove (111) is configured on an inner wall of one side of the slide groove (11) along a length direction. A limiting block (212) that slides inside the limiting groove (111) is fixed to one side of the moving rod (211). An adjusting groove (213) is configured on the top side of the moving rod (211) along a length direction. An adjusting block (214) is slidably mounted inside the adjusting groove (213). A clamping rod (215) is fixed to one side of the adjusting block (214). The end of the clamping rod (215) is fixed to the inner wall of the slide groove (11). A cylindrical rubber sleeve (216) is installed at the part, a buffer spring (217) and a trigger member (218) are arranged inside the rubber sleeve (216), and a locking member (219) is arranged inside the adjusting block (214); when the buffer spring (217) is not subjected to force, the adjusting block (214) is fixed in the adjusting groove (213) by the locking member (219); when the buffer spring (217) is subjected to force and compression, the locking member (219) is controlled by the trigger member (218) to fix the adjusting block (214) on the positioning platform (1) and release the fixing with the adjusting groove (213); when the driving member (22) controls a plurality of the moving rods (211) to spread synchronously to an initial position, the adjusting block (214) is fixed in the initial position in the adjusting groove (213) by the locking member (219) and releases the fixing relationship with the positioning platform (1).

3. The positioning tool for processing CPE product circuit boards according to claim 2, characterized in that: A clamping plate (2161) is installed on one end of the rubber sleeve (216) away from the clamping rod (215), the trigger member (218) includes a piezoelectric ceramic sensor (2181) installed on the other end of the rubber sleeve (216), the buffer spring (217) is connected between the clamping plate (2161) and the piezoelectric ceramic sensor (2181), the adjustment block (214) is internally structured with a mounting groove (2141), the trigger member (218) further includes an electromagnet (2182) installed in the mounting groove (2141), and the piezoelectric ceramic sensor (2181) is electrically connected to the electromagnet (2182).

4. The positioning tool for processing a CPE product circuit board according to claim 3, characterized in that: A connecting groove (2111) connected to the adjusting groove (213) is constructed on the side of the moving rod (211) facing away from the limiting block (212); one side of the adjusting block (214) slides inside the connecting groove (2111); a mounting groove (2142) is constructed on the side of the adjusting block (214) facing away from the limiting block (212); the mounting groove (2142) is connected to the mounting groove (2141); the locking member (219) comprises a locking rod (2191) movably inserted inside the mounting groove (2142); a positioning groove (2131) is constructed on the inner wall of the adjusting groove (213); One end of the locking rod (2191) movably passes through the adjustment block (214); when the buffer spring (217) is not subjected to force, the one end of the locking rod (2191) passing through the adjustment block (214) is movably inserted into the interior of the positioning groove (2131); a plurality of slots (112) distributed in an array are constructed on the side of the slide groove (11) opposite to the limiting groove (111); when the buffer spring (217) is subjected to force and compression, one end of the locking rod (2191) is disengaged from the positioning groove (2131) and the other end of the locking rod (2191) is inserted into the interior of one of the slots (112).

5. The positioning tool for processing CPE product circuit boards according to claim 4, characterized in that: A control plate (2192) is fixed on the locking rod (2191) and slides inside the device groove (2142). An iron block (2193) corresponding to the electromagnet (2182) is fixedly mounted on the control plate (2192). A return spring (2194) is connected between the control plate (2192) and the inner wall of the device groove (2142).

6. A positioning tool for processing a CPE product circuit board according to claim 5, characterized in that: The cross section of the slot (112) is angular, and two adjacent slots (112) are connected, and the other end of the locking rod (2191) is constructed in a wedge shape corresponding to the slot (112).

7. The positioning tool for processing CPE product circuit boards according to claim 1, characterized in that: An annular assembly groove (12) is constructed on the outer peripheral side of the positioning platform (1), the slide groove (11) is connected to the assembly groove (12), the driving member (22) comprises a gear ring (221) rotatably mounted on the inner wall of the assembly groove (12) and coaxial with the positioning platform (1), the teeth of the gear ring (221) are constructed on the inner peripheral side, a plurality of racks (222) are movably arranged inside the assembly groove (12), the number of the racks (222) is the same as the number of the moving rods (211) and corresponds one to one, and the racks (222) are fixed on the corresponding Corresponding to the bottom of the moving rod (211) and arranged along the length direction of the moving rod (211), a plurality of interlocking gears (223) are rotatably mounted between the upper and lower inner walls of the assembly groove (12); the number of the interlocking gears (223) is the same as the number of the racks (222) and corresponds one to one; the interlocking gears (223) are meshed with the corresponding racks (222); a plurality of the interlocking gears (223) are all meshed with the gear ring (221); and the driving member (22) further includes a driving portion (224) for controlling the rotation of the gear ring (221).

8. The positioning tool for processing CPE product circuit boards according to claim 7, characterized in that: The driving part (224) comprises a servo motor (2241) and a driving gear (2242); the servo motor (2241) is mounted at the bottom of the positioning platform (1) and its output shaft movably penetrates into the interior of the assembly groove (12); the driving gear (2242) is located inside the assembly groove (12) and is fixedly sleeved on the output shaft of the servo motor (2241).

9. The positioning tool for processing CPE product circuit boards according to claim 2, characterized in that: The auxiliary fixing mechanism (3) comprises a carrying box (31) which is installed through the middle of the positioning platform (1); a vacuum chamber (32) is formed inside the carrying box (31); a plurality of adsorption holes (33) which are connected to the vacuum chamber (32) are formed on the top of the carrying box (31); and the auxiliary fixing mechanism (3) further comprises a vacuum pump (34) which is arranged at the bottom of the positioning platform (1) and whose suction end is connected to the vacuum chamber (32).

10. A positioning tool for processing a CPE product circuit board according to claim 9, characterized in that: The top side of the carrying box (31) is higher than the top side of the positioning platform (1) and lower than the top side of the rubber sleeve (216).

Images