A fixing device for PCB board processing

Abstract

The present invention relates to the technical field of electronic component processing, and specifically relates to a fixing device for PCB board processing, which includes a base. On the top of the base, there are two PCB board fixing components symmetrically distributed left and right. On the top of the base, there is an adjusting component for adjusting the left and right positions of the two PCB board fixing components. Two support bent pipes distributed left and right are fixedly installed on the top of the base, and the two support bent pipes are located between the two PCB board fixing components. By setting the PCB board fixing components, it can be used to fix rectangular PCB boards and arc-shaped PCB boards, improving the scope of use of the device. And the anti-clamping component provided can exert a braking effect on the telescopic square frame. Therefore, due to the squeezing force of the elastic bow plate on the push rod, the telescopic square frame will not continue to move, ensuring that the clamping force of the clamping groove on the edge of the PCB board will not continue to increase, and avoiding deformation of the edge of the PCB board.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic component processing, and specifically relates to a fixing device for PCB board processing. Background Art

[0002] The Chinese name of the PCB board is printed circuit board, also known as printed wiring board. It is an important electronic component, a support for electronic components, and a carrier for electrical connection of electronic components. Since it is made by electronic printing technology, it is called a "printed" circuit board. During the welding process of the PCB board, in order to prevent the board from moving, a fixing device is needed to fix and limit it.

[0003] According to a PCB board fixing device disclosed in the authorized publication number of the Chinese patent: CN117425280B, by setting the first fixing surface opposite to the pushing block as an inclined surface, providing a downward inclined reaction force for the PCB board through the inclined surface, and preventing the PCB board from warping upwards through the downward inclined reaction force, ensuring that the PCB board remains horizontal, thus ensuring the quality of wire bonding. Nevertheless, the above-disclosed PCB board fixing device still has the technical problem of inconvenient fixing of arc-shaped PCB boards, resulting in a relatively small overall adaptation range of the PCB board fixing device, low flexibility, and inability to adapt to the switching of fixing types for rectangular and arc-shaped PCB boards. Summary of the Invention

[0004] Therefore, the present invention provides a fixing device for PCB board processing to solve the above problems.

[0005] The present invention provides the following technical solution: A fixing device for PCB board processing, including a base, two PCB board fixing components symmetrically distributed left and right are arranged on the top of the base, an adjusting component is arranged on the top of the base, the adjusting component is used for left and right adjustment of the two PCB board fixing components, and two support bent pipes distributed left and right are fixedly installed on the top of the base, and the two support bent pipes are located between the two PCB board fixing components;

[0006] The PCB board fixing component includes a transfer frame. On one side of the transfer frame close to the center line of the base, a plurality of telescopic square holes are arranged in the front-back direction. A telescopic square frame is slidably installed on the inner wall of the telescopic square hole. The telescopic square frame extends into the interior of the transfer frame. At the top of one end of the telescopic square frame close to the center line of the base, a fixed chuck is fixedly installed. On the side of the fixed chuck close to the center line of the base, a clamping groove is arranged. At the bottom of the end of the telescopic square frame far from the fixed chuck, a push rod is fixedly installed. On the bottom wall of the transfer frame at the end far from the center line of the base, a pile platform is fixedly installed. On one side of the pile platform far from the center line of the base, an elastic bow plate is fixedly installed. One side of the elastic bow plate close to the pile platform abuts against the outer walls of a plurality of push rods. On the inner wall of the transfer frame on the side far from the pile platform, a cylinder fixing bracket is fixedly installed. On one side of the cylinder fixing bracket close to the pile platform, a servo cylinder is fixedly installed. The output rod of the servo cylinder movably penetrates the cylinder fixing bracket, and a bow pulling bar is fixedly installed at the end of the output rod of the servo cylinder. At both ends of one side of the bow pulling bar close to the servo cylinder, a cable is fixedly installed. One end of each of the two cables far from the bow pulling bar is fixedly connected to both ends of the elastic bow plate. A sliding cavity is formed through one side of the fixed chuck close to the transfer frame. An anti-clamping component is slidably arranged inside the sliding cavity. In the middle of one side of the transfer frame close to the center line of the base, an alignment card seat is fixedly installed. The height of the alignment card seat is the same as that of the fixed chuck.

[0007] As a preferred solution of the present invention, the anti-clamping component includes an anti-slip square bar slidably installed inside the sliding cavity. The anti-slip square bar extends into the clamping groove. The anti-slip square bar penetrates the transfer frame and extends into the interior of the transfer frame. At the top of one end of the anti-slip square bar close to the push rod, an inclined surface is arranged. At the top of one end of the telescopic square frame close to the push rod, a U-shaped sleeve is fixedly installed. The anti-slip square bar movably penetrates inside the U-shaped sleeve. A braking block is slidably arranged inside the U-shaped sleeve. The bottom of the braking block is attached to the surface of the inclined surface. At the top of the braking block, a first engaging tooth groove is arranged. On the top of the transfer frame, a plurality of racks are fixedly installed in the front-back direction. The racks are respectively located above a plurality of first engaging tooth grooves.

[0008] As a preferred solution of the present invention, sliding vertical grooves are arranged on the front wall and the rear wall of the U-shaped sleeve. Vertical sliding blocks are fixedly installed on the front and the back of the braking block. The vertical sliding blocks are slidably installed inside the sliding vertical grooves.

[0009] As a preferred solution of the present invention, a first spring frame is fixedly installed at one end of the front of the anti-slip square bar close to the U-shaped sleeve. A second spring frame is fixedly installed on the front of the U-shaped sleeve. A first spring is fixedly installed between the first spring frame and the second spring frame.

[0010] As a preferred embodiment of the present invention, a third spring bracket is fixedly installed at the top of one end of the telescopic square frame close to the push rod. A second spring is fixedly installed on one side surface of the third spring bracket away from the U-shaped sleeve. One end of the second spring away from the third spring bracket is fixedly connected to the inner wall of one side of the transfer frame away from the center line of the base.

[0011] As a preferred embodiment of the present invention, a plurality of square openings distributed front and back are formed through one side surface of the transfer frame close to the center line of the base. The square openings are located at the top of the telescopic square holes, and the outer wall of the anti-slip square bar is slidably connected to the inner wall of the square openings.

[0012] As a preferred embodiment of the present invention, a relief slot opening is formed through one side surface of the transfer frame close to the center line of the base. The relief slot opening is located around the bowstring pulling bar.

[0013] As a preferred embodiment of the present invention, anti-rebound components are provided at both ends of the elastic bow plate. The anti-rebound components include vertical grooves formed at both ends of the elastic bow plate. Slide bars are slidably installed inside the vertical grooves. Triangular clamping blocks are fixedly installed on one side surface of the slide bars away from the vertical grooves. Gripping rods are fixedly installed on the tops of the slide bars. Two L-shaped brackets distributed front and back are fixedly installed on the top of the elastic bow plate. The gripping rods movably penetrate through the tops of the L-shaped brackets. A third spring is sleeved around the gripping rods, and the third spring is fixedly installed between the top of the slide bar and the bottom wall of the L-shaped bracket.

[0014] As a preferred embodiment of the present invention, two arc-shaped foot plates distributed front and back are fixedly installed on the bottom wall of the transfer frame. The arc-shaped foot plates are located at both ends of the elastic bow plate. Arc-shaped strips are fixedly installed on the tops of both arc-shaped foot plates. The top surface of the arc-shaped strips is at the same height as the bottom surface of the elastic bow plate. A plurality of triangular card slots are equidistantly distributed on the inner wall of the arc-shaped strips. Strong magnetic blocks are fixedly installed on the bottoms of the slide bars. Two arc-shaped grooves distributed front and back are formed through the top of the transfer frame. The gripping rods movably penetrate through the arc-shaped grooves.

[0015] As a preferred embodiment of the present invention, the adjusting member includes two linear guides fixedly installed on the top of the base. The two linear guides are distributed front and back. Two linear sliders distributed left and right are slidably installed on the outer periphery of each of the two linear guides. The two linear sliders are respectively located at the bottoms of the two transfer frames, and the top of the linear slider is fixedly connected to the bottom of the transfer frame. Two bearing seats distributed left and right are fixedly installed on the top of the base. The two bearing seats are located between the two linear guides. A lead screw is rotatably installed inside each of the two bearing seats. The thread directions of the two lead screws are opposite. An internally threaded block is threadedly engaged with the outer periphery of each of the two lead screws. The tops of the two internally threaded blocks are respectively fixedly connected to the bottoms of the two transfer frames. A dual-shaft motor is fixedly installed in the middle of the top of the base. The end portions of the output shafts at both ends of the dual-shaft motor are fixedly connected to the end portions of the two lead screws through couplings.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. In the present invention, the PCB board fixing member can be used to fix rectangular PCB boards and arc-shaped PCB boards, improving the scope of use of the device. And the anti-pinch member is provided, which can apply a braking effect on the telescopic square frame. Therefore, due to the squeezing force of the elastic bow plate on the push rod, the telescopic square frame will not continue to move, ensuring that the clamping force of the clamping groove on the edge of the PCB board will not continue to increase, and preventing the edge of the PCB board from deforming.

[0018] 2. In the present invention, through the anti-rebound member provided, the resilience of the elastic bow plate after bending cannot be released. At the same time, through the clamping action of the triangular block and the triangular groove, the resilience of the elastic bow plate acts on the triangular block and the triangular groove, ensuring that the output rod of the servo cylinder will not be continuously affected by the rebound force of the elastic bow plate for a long time, and improving the service life of the servo cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the present invention;

[0020] Figure 2 is a cross-sectional structural diagram of the transfer frame in the present invention;

[0021] Figure 3 In the present invention Figure 2 is an enlarged structural diagram of part A;

[0022] Figure 4 is an internal structural diagram of the transfer frame in the present invention;

[0023] Figure 5 is a schematic structural diagram of the anti-pinch member in the present invention;

[0024] Figure 6 In the present invention Figure 5 is a schematic enlarged view of part B;

[0025] Figure 7 is a schematic cross-sectional view of the U-shaped sleeve in the present invention;

[0026] Figure 8 is a schematic structural view of the anti-rebound component in the present invention;

[0027] Figure 9 is a schematic detailed structural view of the anti-rebound component in the present invention.

[0028] In the figure: 1, base; 2, PCB board fixing component; 201, transfer frame; 202, telescopic square hole; 203, telescopic square frame; 204, fixed chuck; 205, clamping groove; 206, push rod; 207, pile platform; 208, elastic bow plate; 209, cylinder fixing bracket; 2010, servo cylinder; 2011, bow pulling bar; 2012, cable; 2013, sliding cavity; 2014, anti-slip square bar; 2015, square opening; 2016, inclined surface; 2017, U-shaped sleeve; 2018, brake block; 2019, first engaging tooth groove; 2020, rack; 2021, sliding vertical groove; 2022, vertical slider; 2023, first spring bracket; 2024, second spring bracket; 2025, first spring; 2026, third spring bracket; 2027, second spring; 2028, relief notch; 2029, alignment card seat; 2030, arc groove; 301, vertical groove; 302, sliding bar; 303, triangular block; 304, grip bar; 305, L-shaped bracket; 306, third spring; 307, strong magnet block; 308, arc-shaped foot plate; 309, arc-shaped strip; 3010, triangular card slot; 401, linear guide rail; 402, linear slider; 403, bearing seat; 404, lead screw; 405, internal thread block; 406, dual-axis motor; 5, support elbow pipe. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0030] Please refer to Figures 1-9 , the technical solutions provided by the present invention specifically include the following embodiments:

[0031] Embodiment 1:

[0032] A fixing device for PCB board processing, including a base 1. Two PCB board fixing components 2 are symmetrically distributed left and right on the top of the base 1. An adjusting component is arranged on the top of the base 1, and the adjusting component is used for adjusting the left and right positions of the two PCB board fixing components 2. Two support bent pipes 5 distributed left and right are fixedly installed on the top of the base 1, and the two support bent pipes 5 are located between the two PCB board fixing components 2;

[0033] The PCB board fixing component 2 includes a transfer frame 201. A plurality of telescopic square holes 202 distributed front and back are formed on one side surface of the transfer frame 201 close to the center line of the base 1. A telescopic square frame 203 is slidably installed on the inner wall of the telescopic square hole 202. The telescopic square frame 203 extends into the interior of the transfer frame 201. A fixing chuck 204 is fixedly installed at the top end of the telescopic square frame 203 close to the center line of the base 1. A clamping groove 205 is formed on one side of the fixing chuck 204 close to the center line of the base 1. A push rod 206 is fixedly installed at the bottom end of the telescopic square frame 203 far from the fixing chuck 204. A pile platform 207 is fixedly installed at one end of the bottom wall of the transfer frame 201 far from the center line of the base 1. An elastic bow plate 208 is fixedly installed on one side surface of the pile platform 207 far from the center line of the base 1. One side surface of the elastic bow plate 208 close to the pile platform 207 abuts against the outer walls of a plurality of push rods 206. A cylinder fixing bracket 209 is fixedly installed on the inner wall of the transfer frame 201 far from the pile platform 207. A servo cylinder 2010 is fixedly installed on one side surface of the cylinder fixing bracket 209 close to the pile platform 207. The output rod of the servo cylinder 2010 movably penetrates through the cylinder fixing bracket 209, and a bow pulling strip 2011 is fixedly installed at the end of the output rod of the servo cylinder 2010. Two cable stays 2012 are fixedly installed at both ends of one side surface of the bow pulling strip 2011 close to the servo cylinder 2010. The ends of the two cable stays 2012 far from the bow pulling strip 2011 are fixedly connected to both ends of the elastic bow plate 208. A sliding cavity 2013 is formed through one side surface of the fixing chuck 204 close to the transfer frame 201. An anti-clamping component is slidably arranged inside the sliding cavity 2013. An alignment clamping seat 2029 is fixedly installed in the middle of one side surface of the transfer frame 201 close to the center line of the base 1. The height of the alignment clamping seat 2029 is the same as that of the fixing chuck 204;

[0034] In this embodiment, specifically, the PCB board is placed flat on the tops of two supporting bent pipes 5. The transfer frame 201 is driven by an adjusting component to move closer to or farther away from each other. The movement of the two transfer frames 201 drives the left and right alignment chucks 2029 to move together until the left and right alignment chucks 2029 abut against the middle positions at the left and right ends of the PLC board. If the processed PCB board is a rectangular board, when the left and right alignment chucks 2029 abut against the left and right ends of the PCB board, a plurality of clamping grooves 205 in the front and rear also just abut against the ends of the PCB board, fixing the PCB board, which facilitates the processing of the PCB board. If the edge of the processed PCB board is arc-shaped, when the two alignment chucks 2029 abut against the middle positions at the left and right ends of the PCB board, two servo cylinders 2010 are started. The output rods of the two servo cylinders 2010 push the two tension bow bars 2011 to move closer to each other. Further, under the pulling force of each cable 2012, the left and right elastic bow plates 208 are elastically bent. During the bending of the elastic bow plates 208, by squeezing the push rods 206, a plurality of telescopic square frames 203 are further pushed to move along the telescopic square holes 202 towards the middle line direction of the base 1. The telescopic square frames 203 drive the fixed chucks 204 to move together, so that a plurality of fixed chucks 204 in the front and rear present an arc-shaped clamping state along with the bending of the elastic bow plates 208, and the arc-edge PCB board can be clamped.

[0035] Further, a relief notch 2028 is formed through the side surface of the transfer frame 201 close to the middle line of the base 1. The relief notch 2028 is located outside the tension bow bar 2011. By providing the relief notch 2028, it has the effect of making way for the tension bow bar 2011, so that during the process of the output rod of the servo cylinder 2010 pushing the tension bow bar 2011 to move, the tension bow bar 2011 will not have contact interference with the transfer frame 201, ensuring the free movement of the tension bow bar 2011.

[0036] Embodiment Two:

[0037] The anti-pinch component includes an anti-slip square bar 2014 slidably installed inside the sliding cavity 2013. The anti-slip square bar 2014 extends into the clamping groove 205 movably, penetrates through the transfer frame 201 and extends into the interior of the transfer frame 201. At the top of one end of the anti-slip square bar 2014 close to the push rod 206, an inclined surface 2016 is provided. At the top of one end of the telescopic square frame 203 close to the push rod 206, a U-shaped sleeve 2017 is fixedly installed. The anti-slip square bar 2014 movably penetrates through the interior of the U-shaped sleeve 2017. A brake block 2018 is slidably arranged inside the U-shaped sleeve 2017. The bottom of the brake block 2018 is attached to the surface of the inclined surface 2016. A first engaging tooth groove 2019 is provided at the top of the brake block 2018. A plurality of racks 2020 distributed front and back are fixedly installed on the top of the transfer frame 201. The racks 2020 are respectively located on the top of a plurality of first engaging tooth grooves 2019.

[0038] Specifically in this embodiment, when the elastic bow-shaped plate 208 bends and squeezes the push rod 206 to push the telescopic square frame 203 together with the fixed chuck 204 towards the edge of the PCB board, the end of the anti-slip square bar 2014 first contacts the edge of the arc-shaped PCB board. Under the reverse action of the PCB board, the anti-slip square bar 2014 is pushed to slide along the inner wall of the sliding cavity 2013 towards the direction close to the U-shaped sleeve 2017. The sliding of the anti-slip square bar 2014 drives the inclined surface 2016 to slide together, so that under the wedge force between the inclined surface 2016 and the bottom of the brake block 2018, the brake block 2018 is pushed upwards. The upward movement of the brake block 2018 drives the first engaging tooth groove 2019 to move, so that the first engaging tooth groove 2019 meshes with the teeth at the bottom of the rack 2020. After that, the first engaging tooth groove 2019 meshes with the telescopic square hole 202 to apply a braking effect on the U-shaped sleeve 2017 and the telescopic square frame 203 connected to the U-shaped sleeve 2017. Therefore, due to the squeezing force of the elastic bow-shaped plate 208 on the push rod 206, the telescopic square frame 203 will not be pushed to move continuously, ensuring that the clamping force of the clamping groove 205 on the edge of the PCB board will not increase continuously, and avoiding the deformation of the edge of the PCB board.

[0039] Further, sliding vertical grooves 2021 are provided on both the front wall and the rear wall of the U-shaped sleeve 2017. Vertical sliding blocks 2022 are fixedly installed on both the front and the back of the brake block 2018. The vertical sliding blocks 2022 are slidably installed inside the sliding vertical grooves 2021. By setting the vertical sliding blocks 2022 to be slidably connected with the sliding vertical grooves 2021, an accurate guiding effect for the up and down sliding of the brake block 2018 can be provided, further ensuring the stability of the up and down movement of the brake block 2018.

[0040] Further, a first spring holder 2023 is fixedly installed at one end of the front surface of the anti-slip square bar 2014 close to the U-shaped sleeve 2017, a second spring holder 2024 is fixedly installed on the front surface of the U-shaped sleeve 2017, and a first spring 2025 is fixedly installed between the first spring holder 2023 and the second spring holder 2024. When the end of the anti-slip square bar 2014 is subjected to the reverse extrusion of the edge of the PCB board and slides towards the U-shaped sleeve 2017, it drives the first spring holder 2023 to move together, causing the first spring 2025 to be compressed and store energy. After the PCB board is fixed, when the output rod of the servo cylinder 2010 retracts, it then drives the bow-shaped pull bar 2011 to gradually reset, and the cable 2012 gradually releases the pulling force on the elastic bow-shaped plate 208, so that the elastic bow-shaped plate 208 gradually straightens under the action of the bending resilience, releasing the thrust on the push rod 206, causing the reverse action of the edge of the PCB board on the end of the anti-slip square bar 2014 to disappear, and the resilience of the first spring 2025 is released to push the first spring holder 2023 together with the telescopic square frame 203 to move away from the U-shaped sleeve 2017. The end of the U-shaped sleeve 2017 extends into the clamping groove 205 again. At the same time, the upward wedging force of the inclined surface 2016 on the brake block 2018 disappears, and the brake block 2018 moves downward under the action of gravity, so that the first engaging tooth groove 2019 disengages from the bottom of the rack 2020.

[0041] Further, a third spring holder 2026 is fixedly installed at the top of one end of the telescopic square frame 203 close to the push rod 206, a second spring 2027 is fixedly installed on the side surface of the third spring holder 2026 away from the U-shaped sleeve 2017, and one end of the second spring 2027 away from the third spring holder 2026 is fixedly connected to the inner wall of one side of the transfer frame 201 away from the center line of the base 1. When the elastic bow-shaped plate 208 pushes the push rod 206 together with the telescopic square frame 203 to move towards the center line of the base 1, it drives the third spring holder 2026 to move together, causing the second spring 2027 to be stretched and store energy. After the fixing is completed, when the first engaging tooth groove 2019 disengages from the rack 2020, the resilience of the second spring 2027 is released, pulling the third spring holder 2026 together with the telescopic square frame 203 to reset.

[0042] Further, a plurality of square openings 2015 distributed front and back are formed through one side surface of the transfer frame 201 close to the center line of the base 1. The square openings 2015 are located at the top of the telescopic square holes 202, and the inner wall of the square openings 2015 is slidably connected to the outer wall of the anti-slip square bar 2014. By providing the square openings 2015, it plays a role in providing sliding support and sliding guidance for the anti-slip square bar 2014, ensuring the stability of the movement of the anti-slip square bar 2014.

[0043] Embodiment 3:

[0044] Anti-rebound components are provided at both ends of the elastic bow plate 208. The anti-rebound components include vertical grooves 301 opened at both ends of the elastic bow plate 208. Slide bars 302 are slidably installed inside the vertical grooves 301. Triangular clamping blocks 303 are fixedly installed on the side surfaces of the slide bars 302 away from the vertical grooves 301. Gripping rods 304 are fixedly installed on the tops of the slide bars 302. Two L-shaped brackets 305 distributed front and back are fixedly installed on the top of the elastic bow plate 208. The gripping rods 304 movably penetrate through the tops of the L-shaped brackets 305. A third spring 306 is sleeved on the periphery of the gripping rods 304. The third spring 306 is fixedly installed between the top of the slide bar 302 and the bottom wall of the L-shaped bracket 305;

[0045] Two arc-shaped foot plates 308 distributed front and back are fixedly installed on the bottom wall of the transfer frame 201. The arc-shaped foot plates 308 are located at both ends of the elastic bow plate 208. Arc-shaped strips 309 are fixedly installed on the tops of the two arc-shaped foot plates 308. The top surface of the arc-shaped strip 309 is at the same height as the bottom surface of the elastic bow plate 208. A plurality of triangular card slots 3010 are equally spaced and opened on the inner wall of the arc-shaped strip 309. Strong magnetic blocks 307 are fixedly installed on the bottoms of the slide bars 302. Two arc-shaped grooves 2030 distributed front and back are penetrated and opened on the top of the transfer frame 201. The gripping rods 304 movably penetrate through the arc-shaped grooves 2030;

[0046] Specifically in this embodiment, when all the clamping grooves 205 are in contact with the edges of the arc-shaped PCB board, the servo cylinder 2010 is closed, and each gripping rod 304 is pushed downward. The downward movement of the gripping rod 304 drives the slide bar 302 to slide downward along the inner wall of the vertical groove 301. The downward sliding of the slide bar 302 drives the triangular clamping block 303 to slide together, so that the triangular clamping block 303 slides downward and is stuck into one of the triangular card slots 3010 at the corresponding position. And when the slide bar 302 moves downward, it will drive the strong magnetic block 307 to move downward together. Until the bottom of the strong magnetic block 307 contacts the bottom of the arc-shaped foot plate 308, under the action of magnetic attraction, the strong magnetic block 307 is adsorbed on the top of the arc-shaped foot plate 308, thereby fixing the triangular clamping block 303 inside the triangular card slot 3010. The elastic stretching effect caused by the downward movement of the slide bar 302 on the third spring 306 will not bounce the slide bar 302 upward. Thus, due to the clamping action between the triangular clamping block 303 and the triangular card slot 3010, the resilience of the elastic bow plate 208 after bending cannot be released. At the same time, through the clamping action between the triangular clamping block 303 and the triangular card slot 3010, the resilience of the elastic bow plate 208 acts on the triangular clamping block 303 and the triangular card slot 3010, which can ensure that the output rod of the servo cylinder 2010 will not be continuously affected by the rebound force of the elastic bow plate 208 for a long time, and can improve the service life of the servo cylinder 2010.

[0047] Embodiment 4:

[0048] The adjusting component includes two linear guide rails 401 fixedly installed on the top of the base 1. The two linear guide rails 401 are distributed front and back. Two linear sliders 402 distributed left and right are slidably installed on the peripheries of the two linear guide rails 401. The two linear sliders 402 are respectively located at the bottoms of the two transfer frames 201, and the tops of the linear sliders 402 are fixedly connected to the bottoms of the transfer frames 201. Two bearing seats 403 distributed left and right are fixedly installed on the top of the base 1. The two bearing seats 403 are located between the two linear guide rails 401. Lead screws 404 are rotatably installed inside the two bearing seats 403. The thread directions of the two lead screws 404 are opposite. Inner threaded blocks 405 are threadedly connected to the peripheries of the two lead screws 404. The tops of the two inner threaded blocks 405 are respectively fixedly connected to the bottoms of the two transfer frames 201. A dual-axis motor 406 is fixedly installed in the middle of the top of the base 1. The end portions of the output shafts at both ends of the dual-axis motor 406 are fixedly connected to the end portions of the two lead screws 404 through couplings;

[0049] Specifically in this embodiment, the left and right two lead screws 404 are driven to rotate by the output shafts at both ends of the dual-axis motor 406. The two lead screws 404 rotate to generate a spiral thrust, causing the two inner threaded blocks 405 to move. And because the thread directions of the two lead screws 404 are opposite, during the same-direction rotation of the two lead screws 404, the two inner threaded blocks 405 drive the transfer frames 201 to move closer to each other or move away from each other. The movement of the two transfer frames 201 drives the left and right two alignment clamping seats 2029 to move together, adjusting the clamping distance between the two PCB board fixing components 2, so as to be used for fixing PCB boards of different specifications.

[0050] When a fixing device for PCB board processing in this solution is working, first place the PCB board flat on the top of two support bent pipes 5. Then start the dual-shaft motor 406, and drive the left and right lead screws 404 to rotate through the output shafts at both ends of the dual-shaft motor 406. The rotation of the two lead screws 404 generates a spiral thrust, causing the two internal thread blocks 405 to move. And because the thread directions of the two lead screws 404 are opposite, during the same-direction rotation of the two lead screws 404, the two internal thread blocks 405 drive the transfer frame 201 to move closer to each other or move away from each other. The movement of the two transfer frames 201 drives the left and right alignment clamping seats 2029 to move together until the left and right alignment clamping seats 2029 abut against the middle positions at the left and right ends of the PLC board. Immediately turn off the dual-shaft motor 406. If the PCB board to be processed is a rectangular board, when the left and right alignment clamping seats 2029 abut against the left and right ends of the PCB board, the multiple clamping grooves 205 in the front and back also just abut against the ends of the PCB board, fixing the PCB board, which is convenient for processing the PCB board. If the edge of the PCB board to be processed is arc-shaped, when the two alignment clamping seats 2029 abut against the middle positions at the left and right ends of the PCB board, start the two servo cylinders 2010. The output rods of the two servo cylinders 2010 push the two tension bow strips 2011 to move closer to each other. Further, under the pulling force of each cable 2012, the left and right elastic bow plates 208 are elastically bent. During the bending of the elastic bow plates 208, by squeezing the push rod 206, further push the multiple telescopic square frames 203 to move along the telescopic square holes 202 towards the midline direction close to the base 1. The telescopic square frames 203 drive the fixed chucks 204 to move together, so that the multiple fixed chucks 204 in the front and back present an arc-shaped clamping state following the bending of the elastic bow plates 208, and can clamp the PCB board with an arc edge;

[0051] When the elastic bow plate 208 bends and squeezes the push rod 206 to push the telescopic square frame 203 together with the fixed chuck 204 to move towards the middle, the end of the anti-slip square bar 2014 first contacts the edge of the arc-shaped PCB board. Under the reverse action of the PCB board, the anti-slip square bar 2014 is pushed to slide along the inner wall of the sliding cavity 2013 towards the direction close to the U-shaped sleeve 2017. The sliding of the anti-slip square bar 2014 drives the inclined plane 2016 to slide together, so that under the wedge force between the inclined plane 2016 and the bottom of the brake block 2018, the brake block 2018 is pushed upwards. The upward movement of the brake block 2018 drives the first engaging tooth groove 2019 to move, so that the first engaging tooth groove 2019 meshes with the teeth at the bottom of the rack 2020. After that, the first engaging tooth groove 2019 meshes with the telescopic square hole 202 to apply a braking effect on the U-shaped sleeve 2017 and the telescopic square frame 203 connected to the U-shaped sleeve 2017. Therefore, the squeezing force of the elastic bow plate 208 on the push rod 206 will not continue to push the telescopic square frame 203 to move, ensuring that the clamping force of the clamping groove 205 on the edge of the PCB board will not continue to increase and avoiding deformation of the edge of the PCB board.

[0052] When all the clamping grooves 205 are in contact with the arc-shaped edge of the PCB board, the servo cylinder 2010 is closed, and each holding rod 304 is pushed downwards. The downward pushing of the holding rod 304 drives the slide bar 302 to slide downwards along the inner wall of the vertical groove 301. The downward sliding of the slide bar 302 drives the triangular clamping block 303 to slide together, so that the triangular clamping block 303 slides down and is clamped into a triangular clamping groove 3010 at the corresponding position. And when the slide bar 302 moves downwards, it will drive the strong magnetic block 307 to move downwards together. Until the bottom of the strong magnetic block 307 contacts the bottom of the arc-shaped foot plate 308, under the magnetic attraction, the strong magnetic block 307 is adsorbed on the top of the arc-shaped foot plate 308, thereby fixing the triangular clamping block 303 inside the triangular clamping groove 3010. So that the elastic stretching effect caused by the downward movement of the slide bar 302 on the third spring 306 will not bounce the slide bar 302 upwards. In this way, due to the clamping action between the triangular clamping block 303 and the triangular clamping groove 3010, the resilience of the elastic bow plate 208 after bending cannot be released. At the same time, through the clamping action between the triangular clamping block 303 and the triangular clamping groove 3010, the resilience of the elastic bow plate 208 acts on the triangular clamping block 303 and the triangular clamping groove 3010, which can ensure that the output rod of the servo cylinder 2010 will not be subjected to the rebound force of the elastic bow plate 208 for a long time, and can improve the service life of the servo cylinder 2010.

[0053] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and deformations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fixing device for PCB board processing, characterized in that: It includes a base (1). On the top of the base (1), there are two PCB board fixing components (2) symmetrically distributed left and right. On the top of the base (1), there is an adjusting component which is used for adjusting the left and right positions of the two PCB board fixing components (2). On the top of the base (1), two support bent pipes (5) distributed left and right are fixedly installed. The two support bent pipes (5) are located between the two PCB board fixing components (2). The PCB board fixing component (2) includes a transfer frame (201). On one side of the transfer frame (201) close to the center line of the base (1), a plurality of telescopic square holes (202) are arranged front and back. A telescopic square frame (203) is slidably installed on the inner wall of the telescopic square hole (202). The telescopic square frame (203) extends into the interior of the transfer frame (201). At the top of one end of the telescopic square frame (203) close to the center line of the base (1), a fixed chuck (204) is fixedly installed. A clamping groove (205) is arranged on one side of the fixed chuck (204) close to the center line of the base (1). At the bottom of one end of the telescopic square frame (203) far from the fixed chuck (204), a push rod (206) is fixedly installed. On the bottom wall of the transfer frame (201) at one end far from the center line of the base (1), a pile platform (207) is fixedly installed. On one side of the pile platform (207) far from the center line of the base (1), an elastic bow plate (208) is fixedly installed. One side of the elastic bow plate (208) close to the pile platform (207) abuts against the outer walls of a plurality of push rods (206). On the inner wall of one side of the transfer frame (201) far from the pile platform (207), a cylinder fixing bracket (209) is fixedly installed. On one side of the cylinder fixing bracket (209) close to the pile platform (207), a servo cylinder (2010) is fixedly installed. The output rod of the servo cylinder (2010) movably penetrates through the cylinder fixing bracket (209), and a bow pulling strip (2011) is fixedly installed at the end of the output rod of the servo cylinder (2010). On both ends of one side of the bow pulling strip (2011) close to the servo cylinder (2010), a cable (2012) is fixedly installed. The ends of the two cables (2012) far from the bow pulling strip (2011) are fixedly connected to both ends of the elastic bow plate (208). A sliding cavity (2013) is formed by penetrating one side of the fixed chuck (204) close to the transfer frame (201). An anti-clamping component is slidably arranged in the sliding cavity (2013). In the middle of one side of the transfer frame (201) close to the center line of the base (1), an alignment clamping seat (2029) is fixedly installed. The height of the alignment clamping seat (2029) is the same as that of the fixed chuck (204).

2. The fixing device for PCB board processing according to claim 1, wherein: The anti-pinch component includes an anti-slip square bar (2014) slidably installed inside the sliding cavity (2013). The anti-slip square bar (2014) extends into the clamping groove (205) movably. The anti-slip square bar (2014) penetrates through the transfer frame (201) and extends into the inside of the transfer frame (201). At the top of one end of the anti-slip square bar (2014) close to the push rod (206), an inclined surface (2016) is provided. At the top of one end of the telescopic square frame (203) close to the push rod (206), a U-shaped sleeve (2017) is fixedly installed. The anti-slip square bar (2014) movably penetrates through the inside of the U-shaped sleeve (2017). A brake block (2018) is slidably arranged inside the U-shaped sleeve (2017). The bottom of the brake block (2018) is attached to the surface of the inclined surface (2016). At the top of the brake block (2018), a first engaging tooth groove (2019) is provided. On the top of the transfer frame (201), a plurality of racks (2020) distributed front and back are fixedly installed. The racks (2020) are respectively located on the top of a plurality of first engaging tooth grooves (2019).

3. The fixing device for PCB board processing according to claim 2, wherein: On the front wall and the rear wall of the U-shaped sleeve (2017), sliding vertical grooves (2021) are provided. On the front and back of the brake block (2018), vertical sliders (2022) are fixedly installed. The vertical sliders (2022) are slidably installed inside the sliding vertical grooves (2021).

4. The fixing device for PCB board processing according to claim 3, characterized in that: On the front of the anti-slip square bar (2014) close to the U-shaped sleeve (2017), a first spring frame (2023) is fixedly installed. On the front of the U-shaped sleeve (2017), a second spring frame (2024) is fixedly installed. A first spring (2025) is fixedly installed between the first spring frame (2023) and the second spring frame (2024).

5. The fixing device for PCB board processing according to claim 4, characterized in that: At the top of one end of the telescopic square frame (203) close to the push rod (206), a third spring frame (2026) is fixedly installed. On one side of the third spring frame (2026) away from the U-shaped sleeve (2017), a second spring (2027) is fixedly installed. One end of the second spring (2027) away from the third spring frame (2026) is fixedly connected to the inner wall of one side of the transfer frame (201) away from the center line of the base (1).

6. The fixing device for PCB board processing according to claim 2, characterized in that: On one side surface of the transfer frame (201) close to the center line of the base (1), a plurality of square openings (2015) distributed front and back are penetrated. The square openings (2015) are located at the top of the telescopic square holes (202), and the inner wall of the square openings (2015) is slidably connected to the outer wall of the anti-slip square bar (2014).

7. A fixing device for PCB board processing according to claim 1, characterized in that: On one side surface of the transfer frame (201) close to the center line of the base (1), a relief notch (2028) is penetrated. The relief notch (2028) is located on the periphery of the bow-shaped bar (2011).

8. A fixing device for PCB board processing according to claim 1, characterized in that: Both ends of the elastic bow plate (208) are provided with anti-rebound components. The anti-rebound components include vertical grooves (301) opened at both ends of the elastic bow plate (208). Slide bars (302) are slidably installed inside the vertical grooves (301). Triangular clamping blocks (303) are fixedly installed on one side surface of the slide bars (302) away from the vertical grooves (301). Gripping rods (304) are fixedly installed on the tops of the slide bars (302). Two L-shaped brackets (305) distributed front and back are fixedly installed on the top of the elastic bow plate (208). The gripping rods (304) movably penetrate through the tops of the L-shaped brackets (305). A third spring (306) is sleeved on the periphery of the gripping rods (304). The third spring (306) is fixedly installed between the top of the slide bar (302) and the bottom wall of the L-shaped bracket (305).

9. The fixing device for PCB board processing according to claim 8, characterized in that: Two arc-shaped foot plates (308) distributed front and back are fixedly installed on the bottom wall of the transfer frame (201). The arc-shaped foot plates (308) are located at both ends of the elastic bow plate (208). Arc-shaped strips (309) are fixedly installed on the tops of the two arc-shaped foot plates (308). The top surface of the arc-shaped strip (309) is at the same height as the bottom surface of the elastic bow plate (208). A plurality of triangular card slots (3010) distributed at equal intervals are opened on the inner wall of the arc-shaped strip (309). Strong magnetic blocks (307) are fixedly installed on the bottoms of the slide bars (302). Two arc-shaped grooves (2030) distributed front and back are penetrated through the top of the transfer frame (201). The gripping rods (304) movably penetrate through the arc-shaped grooves (2030).

10. A fixing device for PCB board processing according to claim 1, characterized in that: The adjusting component includes two linear guide rails (401) fixedly installed on the top of the base (1). The two linear guide rails (401) are distributed front and back. Two linear sliders (402) distributed left and right are slidably installed on the peripheries of the two linear guide rails (401). The two linear sliders (402) are respectively located at the bottoms of the two transfer frames (201). The tops of the linear sliders (402) are fixedly connected to the bottoms of the transfer frames (201). Two bearing seats (403) distributed left and right are fixedly installed on the top of the base (1). The two bearing seats (403) are located between the two linear guide rails (401). Lead screws (404) are rotatably installed inside the two bearing seats (403). The thread directions of the two lead screws (404) are opposite. Internal thread blocks (405) are threadedly connected to the peripheries of the two lead screws (404). The tops of the two internal thread blocks (405) are respectively fixedly connected to the bottoms of the two transfer frames (201). A dual-axis motor (406) is fixedly installed in the middle of the top of the base (1). The end parts of the output shafts at both ends of the dual-axis motor (406) are fixedly connected to the end parts of the two lead screws (404) through couplings.

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