PCB processing fixing device

Abstract

The application belongs to the technical field of circuit board manufacturing, and particularly relates to a PCB (Printed Circuit Board) processing fixing device, which comprises a processing platform, a rotating tool and a fixing tool. The application adopts differential linkage transmission and multi-directional clamping and angle-adjustable integrated design. A differential docking device containing a transmission cabin, a driving rubber belt, a main and auxiliary transmission shaft and a gear assembly is arranged in the fixing base of the fixing tool. A multi-directional adjustable slot is arranged on the top, side and bottom of the fixing tool. A torsional spring elastic structure and a supporting middle arm are combined. A rotating adjusting structure is formed by a rotating screw rod, a rotating base and a limiting arm. The problems of poor adaptability, difficulty in compatibility with different specifications and special circuit boards, difficulty in controlling the fixing force, easy deformation or loosening of the circuit board, single fixing mode, insufficient stability, low function integration, frequent manual adjustment and positioning and low processing efficiency of the existing PCB fixing device are solved.

Description

Technical Field

[0001] This invention belongs to the field of circuit board manufacturing technology, specifically referring to a PCB circuit board processing and fixing device. Background Technology

[0002] A PCB (Printed Circuit Board) is a core component of electronic devices, providing mechanical support and reliable electrical interconnection for various electronic components, and undertaking critical functions such as signal transmission and power distribution. It is mainly composed of an insulating substrate and conductive copper foil, with pre-defined circuits formed through etching processes. Combined with solder resist, flux, and pads, it achieves orderly circuit connections and is an important carrier for electronic system integration. PCBs can be classified by the number of layers into single-sided, double-sided, and multi-layer boards, adapting to everything from simple household appliances to complex electronic devices, and also giving rise to special types such as flexible boards and high-frequency boards.

[0003] After PCB circuit boards are manufactured, they still need to undergo subsequent processes such as inspection, polishing, lamination, and soldering. All of these processes require stable fixation of the PCB circuit boards to prevent displacement, shaking, or deformation during processing, which would affect processing accuracy and product yield. Existing PCB fixing devices have several shortcomings: First, poor adaptability; most are fixed-size structures, making it difficult to accommodate PCB circuit boards of different specifications and thicknesses, especially for special flexible boards and multilayer boards. Second, limited fixing methods; most use single-sided extrusion or vacuum adsorption. Extrusion can easily lead to edge damage and internal circuit breakage, while vacuum adsorption lacks stability for fixing circuit boards with stains or holes. Third, low functional integration; they can only achieve a single fixing function and cannot adjust the angle and position of the circuit board to meet subsequent processing needs, requiring frequent manual adjustments and reducing processing efficiency. Fourth, difficulty in controlling the fixing force; excessive force can cause deformation of the circuit board, while insufficient force can lead to loosening during processing, affecting processing quality. Therefore, there is an urgent need for a PCB circuit board processing fixing device that is widely adaptable, stable, adjustable, and can precisely control the force, in order to solve the pain points of existing technologies. Summary of the Invention

[0004] In view of the above situation and to overcome the defects of the prior art, the present invention provides a PCB circuit board processing and fixing device. To solve the problems of poor adaptability, unstable fixing, difficulty in controlling force and limited function of the existing device, a differential speed linkage transmission, multi-directional clamping and angle adjustable integrated design is adopted. It is equipped with a differential speed docking device, a multi-directional adjustable slot structure and a rotating tooling assembly, which achieves the technical effects of being compatible with multiple specifications of circuit boards, self-adaptive and precise fixing, flexible adjustment of angle and position and overload protection.

[0005] The technical solution adopted by the present invention is as follows: a PCB circuit board processing and fixing device, including a processing platform, a rotating fixture and a fixing fixture. The processing platform is installed on a workbench, the rotating fixture is set on the processing platform, and the fixing fixture is set on the rotating fixture. The three constitute the main support and functional bearing structure of the device, realizing the core functions of installation foundation, position adjustment and stable fixing during circuit board processing.

[0006] Furthermore, the rotary fixture includes a rotary base, a rotary lead screw, a rotary slide, a rotary base, a rotary motor, and a rotary limiting arm. The rotary base is mounted on the processing platform, the rotary lead screw is rotatably mounted on the rotary base, the rotary slide is slidably connected to the rotary base, the rotary slide is threadedly connected to the rotary lead screw, the end of the rotary base is rotatably connected to the rotary slide, the rotary motor is located inside the rotary base, one end of the rotary limiting arm is rotatably connected to the rotary base, and the other end of the rotary limiting arm is rotatably connected to the rotary base. This component provides the device with angle and horizontal position adjustment capabilities, allowing for flexible adjustment of the circuit board posture to adapt to different processing procedures, eliminating the need for frequent manual positioning and improving processing efficiency.

[0007] Furthermore, the fixing fixture includes a fixed base, a bottom rotating shaft, a bottom slot, a torsion spring, a top slot, a vertical lead screw, and a supporting middle arm. The fixed base is mounted on a rotating base, the bottom rotating shaft is rotatably mounted on the fixed base, the bottom slot is mounted on the bottom rotating shaft, the torsion spring is sleeved on the bottom rotating shaft, one end of the torsion spring is fixedly connected to the fixed base, and the other end of the torsion spring is fixedly connected to the bottom slot. The top slot is slidably connected to the fixed base, the vertical lead screw is rotatably connected to the fixed base, and the vertical lead screw is threadedly connected to the top slot. The supporting middle arm is located inside the fixed base. This assembly achieves vertical clamping of the circuit board and elastic support at the bottom. With the elastic structure, it can be adapted to flexible boards and multilayer boards, avoiding clamping damage, while providing central support to prevent deformation of the circuit board.

[0008] Furthermore, a rotating gear is provided on the bottom rotating shaft, a rotating cylinder is installed in the fixed base, and a sliding rotating rack is provided in the fixed base. The rotating rack is meshed with the rotating gear, and the rotating rack is fixedly connected to the telescopic end of the rotating cylinder.

[0009] Furthermore, the fixed base is equipped with a differential coupling device, which includes a transmission compartment, a main output shaft, an output wheel, a main shaft end gear, a side extension arm, a side gear, a secondary transmission shaft, a secondary shaft end gear, a rubber transmission belt, and a drive motor. The transmission compartment is located on the fixed base, the main output shaft is rotatably connected to the transmission compartment, the output wheel is rotatably connected to the main output shaft, the main shaft end gear is located at the inner end of the main output shaft, the side extension arm is located on the side wall of the output wheel, the side gear is rotatably connected to the side extension arm, the secondary transmission shaft is rotatably connected to the transmission compartment, the secondary shaft end gear is located at the inner end of the secondary transmission shaft, the drive motor is located on the side wall of the transmission compartment, and the output wheel is connected to the drive motor via a rubber transmission belt. This device provides differential linkage and overload protection for the fixed fixture, realizes adaptive adjustment of multi-directional clamping, and avoids damage to the circuit board due to excessive clamping force by the slippage of the rubber belt.

[0010] Furthermore, the transmission compartment is slidably connected to symmetrical side slots, and a side lead screw is rotatably connected inside the transmission compartment. The symmetrical side slots and the side lead screw are threaded together, and the two work together to achieve symmetrical clamping of the circuit board in the left and right directions, forming an all-round positioning with the upper and lower clamping structure, improving the fixation stability, and adapting to circuit boards of different widths.

[0011] Furthermore, a vertical follower gear is provided on the vertical lead screw, and a vertical shaft output gear is provided at the outer end of the auxiliary transmission shaft. The vertical shaft output gear meshes with the vertical follower gear. This gear set realizes the power transmission between the differential docking device and the vertical lead screw, drives the top slot to move up and down, and completes the clamping action above the circuit board.

[0012] Furthermore, the outer end of the main output shaft is provided with a side shaft output gear, and the side lead screw is provided with a side follower gear. The side follower gear meshes with the side shaft output gear. This gear set realizes the power transmission between the differential docking device and the side lead screw, drives the two side slots to move relative to each other, and completes the left and right clamping action of the circuit board.

[0013] The beneficial effects of the PCB circuit board processing and fixing device provided in this solution are as follows: (1) Based on the poor compatibility of existing devices, a multi-directional adjustable slot and differential linkage structure is adopted, and a top slot, a side slot and a bottom elastic slot are set up to achieve the technical effect of being compatible with PCB circuit boards of different sizes and thicknesses, and solve the technical problem that a single device cannot be adapted to multiple specifications of circuit boards. (2) In view of the difficulty in controlling the fixing force, the rubber transmission belt is used to prevent overload and the differential adaptive adjustment method is adopted. The friction transmission structure and gear differential assembly are set up to achieve the technical effect of automatic limit of fixing force and avoid the deformation of circuit board by squeezing. The technical problems of excessive fixing force damaging circuit board and insufficient fixing force causing loosening are solved. (3) To address the issue of insufficient stability, a four-way clamping method with top, bottom, left, and right sides and a central support method were adopted. Top slots, symmetrical side slots, and support arms were set up to achieve all-round stable positioning of the circuit board without offset or shaking, thus solving the technical problem of poor stability of single-sided fixing or adsorption fixing. (4) In view of the problem of single function and need for manual adjustment of position, the integrated method of rotating tooling and fixed tooling is adopted, and a rotating screw, rotating base and limit arm are set up to achieve the technical effect of flexible adjustment of circuit board angle and horizontal position, and solve the technical problem of low processing efficiency due to frequent manual adjustment of positioning; (5) Based on the problem of easy damage when fixing flexible boards and multilayer boards, an elastic bottom slot and flexible edge clamping method are adopted. A torsion spring and bottom rotating shaft are set to achieve flexible clamping and avoid damage to the edge and internal circuit of the circuit board. This solves the technical problem of easy damage when fixing special circuit boards. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a PCB circuit board processing and fixing device proposed in this invention; Figure 2 This is a front view of a PCB circuit board processing and fixing device proposed in this invention; Figure 3 This is a schematic diagram of the rotating tooling structure; Figure 4 This is a structural diagram of a fixed tooling; Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6 for Figure 4 Enlarged view of point B in the middle; Figure 7 This is a schematic diagram of the differential docking device. Figure 8 This is a schematic diagram of the internal structure of the transmission compartment; Figure 9 This is a transmission relationship diagram for a differential docking device.

[0015] Among them, 1. Machining platform, 2. Rotary fixture, 3. Fixed fixture, 101. Sealed door, 102. Machining chamber, 201. Rotary base, 202. Rotary lead screw, 203. Rotary slide, 204. Rotary base, 205. Rotary motor, 206. Rotary limit arm, 301. Fixed base, 302. Bottom pivot, 303. Bottom slot, 304. Torsion spring, 305. Top slot, 306. Vertical lead screw, 307. Support arm, 308. Rotary gear, 309. Rotary rack. 310. Rotary cylinder; 311. Differential docking device; 312. Transmission compartment; 313. Main output shaft; 314. Output wheel; 315. Main shaft end gear; 316. Side extension arm; 317. Side gear; 318. Secondary drive shaft; 319. Secondary shaft end gear; 320. Rubber transmission belt; 321. Drive motor; 322. Side slot; 323. Side lead screw; 324. Side follower gear; 325. Vertical shaft output gear; 326. Vertical follower gear; 327. Side shaft output gear.

[0016] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0018] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0019] like Figures 1-9 As shown, the present invention provides a PCB circuit board processing and fixing device, including a processing platform 1, a rotating fixture 2 and a fixing fixture 3. The processing platform 1 is installed on a workbench, the rotating fixture 2 is disposed on the processing platform 1, and the fixing fixture 3 is disposed on the rotating fixture 2. The processing platform 1 is provided with a processing chamber 102, and a rotatable sealed door 101 is installed on the processing chamber 102.

[0020] The rotating fixture 2 includes a rotating base 201, a rotating lead screw 202, a rotating slide 203, a rotating base 204, a rotating motor 205, and a rotating limiting arm 206. The rotating base 201 is mounted on the processing platform 1. The rotating lead screw 202 is rotatably mounted on the rotating base 201. The rotating slide 203 is slidably connected to the rotating base 201 and threadedly connected to the rotating lead screw 202. The end of the rotating base 204 is rotatably connected to the rotating slide 203. The rotating motor 205 is located inside the rotating base 201. One end of the rotating limiting arm 206 is rotatably connected to the rotating base 201, and the other end of the rotating limiting arm 206 is rotatably connected to the rotating base 204.

[0021] The fixed fixture 3 includes a fixed base 301, a bottom rotating shaft 302, a bottom slot 303, a torsion spring 304, a top slot 305, a vertical lead screw 306, and a supporting arm 307. The fixed base 301 is mounted on the rotating base 204. The bottom rotating shaft 302 is rotatably mounted on the fixed base 301. The bottom slot 303 is mounted on the bottom rotating shaft 302. The torsion spring 304 is sleeved on the bottom rotating shaft 302. One end of the torsion spring 304 is fixedly connected to the fixed base 301, and the other end is fixedly connected to the bottom slot 303. The top slot 305 is slidably connected to the fixed base 301. The vertical lead screw 306 is rotatably connected to the fixed base 301. A vertical lead screw 306 is threadedly connected to a top slot 305, and a supporting middle arm 307 is located within a fixed base 301. A rotating gear 308 is mounted on a bottom rotating shaft 302, and a rotating cylinder 310 is installed within the fixed base 301. A sliding rotating rack 309 is also located within the fixed base 301, meshing with the rotating gear 308. The rotating rack 309 is fixedly connected to the telescopic end of the rotating cylinder 310. A differential coupling device 311 is located within the fixed base 301. The differential coupling device 311 includes a transmission compartment 312, a main output shaft 313, an output wheel 314, a main shaft end gear 315, a side extension arm 316, a side gear 317, and a secondary transmission. The system includes a shaft 318, a secondary shaft end gear 319, a rubber transmission belt 320, and a drive motor 321. A transmission chamber 312 is mounted on a fixed base 301. The main output shaft 313 is rotatably connected to the transmission chamber 312. An output wheel 314 is rotatably connected to the main output shaft 313. A main shaft end gear 315 is located at the inner end of the main output shaft 313. A side extension arm 316 is located on the side wall of the output wheel 314. A side gear 317 is rotatably connected to the side extension arm 316. A secondary transmission shaft 318 is rotatably connected to the transmission chamber 312. A secondary shaft end gear 319 is located at the inner end of the secondary transmission shaft 318. The drive motor 321 is located on the side wall of the transmission chamber 312. The output wheel 314 is connected via... A rubber transmission belt 320 is connected to a drive motor 321; a symmetrical side slot 322 is slidably connected to the transmission chamber 312, and a side lead screw 323 is rotatably connected inside the transmission chamber 312. The symmetrical side slot 322 and the side lead screw 323 are threadedly connected; a vertical follower gear 326 is provided on the vertical lead screw 306, and a vertical shaft output gear 325 is provided at the outer end of the auxiliary transmission shaft 318. The vertical shaft output gear 325 is meshed with the vertical follower gear 326; a side shaft output gear 327 is provided at the outer end of the main output shaft 313, and a side follower gear 324 is provided on the side lead screw 323. The side follower gear 324 is meshed with the side shaft output gear 327.

[0022] In practical use, adjust the rotating fixture 2, open the sealed hatch 101, and start the rotating motor 205. The rotating motor 205 drives the rotating lead screw 202 to rotate. Since the rotating slide 203 is threadedly connected to the rotating lead screw 202, the rotation of the rotating lead screw 202 causes the rotating slide 203 to move horizontally. During the movement of the rotating slide 203, the rotating base 204 is restricted by the rotating limit arm 206. The rotating base 204 rotates around the connecting shaft with the rotating base 201, and the rotating base 201 slides outward under the control of the rotating motor 205. The rotating base 204 is changed from a vertical to a horizontal state, and at the same time, the fixed fixture 3 is removed from the processing chamber 102; the plate is installed and inserted into the bottom slot 303. The rotating cylinder 310 is started, and the rotating cylinder 310 extends to drive the rotating rack 309 to move. The rotating rack 309 moves to drive the rotating gear 308 to rotate. The rotating gear 308 rotates to drive the bottom rotating shaft 302 to rotate. The rotation of the bottom rotating shaft 302 causes the plate and the bottom slot 303 to rotate together to a horizontal state. At the same time, the back of the plate is in close contact with the supporting middle arm 307.The plate is fixed in place, and the drive motor 321 is started. The drive motor 321 drives the output wheel 314 to rotate via the rubber transmission belt 320. When both the side slot 322 and the top slot 305 can slide, both the vertical lead screw 306 and the side lead screw 323 can rotate. The rotational resistance of the main output shaft 313 and the auxiliary drive shaft 318 approaches approximation. At this time, the two sets of side gears 317 do not rotate. The two sets of side gears 317 simultaneously engage with the main shaft end gear 315 and the auxiliary shaft end gear 319. The main shaft end gear 315 and the auxiliary shaft end gear rotate synchronously with the output wheel 314. The rotation of the main shaft end gear 315 drives the main output shaft 313 to rotate, and the rotation of the auxiliary shaft end gear 319 drives the output wheel 314 to rotate. The rotating drive shaft 318 drives the vertical shaft output gear 325, which in turn drives the vertical follower gear 326. The vertical follower gear 326 then drives the vertical lead screw 306. Since the vertical lead screw 306 is threadedly connected to the top slot 305, it can cause the top slot 305 to slide along its axis. The rotating main output shaft 313 drives the side shaft output gear 327, which in turn drives the side follower gear 324. The side follower gear 324 then drives the side lead screw 323. Because the side lead screw 323 is symmetrical on both sides... The rotation of the side lead screw 323 causes the side slots 322 to move closer together. When the top slot 305 contacts the edge of the plate, the resistance to the rotation of the vertical lead screw 306 increases, and the vertical lead screw 306 stops rotating. Because the vertical lead screw 306 stops rotating, the vertical follower gear 326, the side shaft output gear 327, the main output shaft 313, and the main shaft end gear 315, which are connected to the vertical lead screw 306, stop rotating. At this time, the side gear 317 begins to rotate, and the original speed of the secondary shaft end gear 319 doubles. The speed of the side lead screw 323, which is connected to the secondary shaft end gear 319, doubles. The side slots 322 move towards the center (in the direction of the vertical lead screw 306). As the speed increases, when the side slot 322 first contacts the edge of the plate, the rotational speed of the vertical screw 306 doubles, and the side slot 322 moves towards the center at a faster speed. When both the side slot 322 and the top slot 305 have contacted the edge of the plate, the rotational resistance of the output wheel 314 becomes the maximum. At this time, the resistance of the output wheel 314 is greater than the friction between the rubber transmission belt 320 and the output wheel 314, causing the rubber transmission belt 320 to slip. The load on the drive motor 321 increases, and the drive motor 321 immediately stops working. The rubber transmission belt 320 can no longer drive the output wheel 314 to rotate, which can avoid excessive squeezing force on the plate when fixing it, which could lead to plate deformation.After the sheet metal is fixed, the rotary motor 205 is restarted, driving the rotating base 201 to slide, changing the rotating base 204 from horizontal to vertical. Simultaneously, the rotating base 204 transports the sheet metal into the processing chamber 102, where subsequent processing and inspection can be performed.

[0023] The above is the specific workflow of this invention. This step can be repeated next time it is used.

[0024] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention.

[0026] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A PCB circuit board processing and fixing device, characterized in that: The assembly includes a machining platform (1), a rotating fixture (2), and a fixed fixture (3). The machining platform (1) is mounted on a workbench, the rotating fixture (2) is mounted on the machining platform (1), and the fixed fixture (3) is mounted on the rotating fixture (2). The rotating fixture (2) includes a rotating base (201), a rotating base (204), and a rotating slide (203). The rotating base (201) is mounted on the machining platform (1), and the rotating slide (203) is mounted on the rotating base (204). 1) Sliding connection, the end of the rotating base (204) is rotatably connected to the rotating slide (203); the fixed fixture (3) includes a fixed base (301), which is disposed on the rotating base (204); the fixed base (301) is provided with a differential docking device (311), which includes a transmission compartment (312), a main output shaft (313), an output wheel (314), a main shaft end gear (315), and a side extension. The drive includes an extension arm (316), a side gear (317), a secondary drive shaft (318), a secondary shaft end gear (319), a rubber transmission belt (320), and a drive motor (321). The transmission chamber (312) is mounted on a fixed base (301). The main output shaft (313) is rotatably connected to the transmission chamber (312). The output wheel (314) is rotatably connected to the main output shaft (313). The main shaft end gear (315) is located at the inner end of the main output shaft (313). An extension arm (316) is located on the side wall of the output wheel (314). The side gear (317) is rotatably connected to the side extension arm (316). The auxiliary drive shaft (318) is rotatably connected to the transmission chamber (312). The auxiliary shaft end gear (319) is located at the inner end of the auxiliary drive shaft (318). The drive motor (321) is located on the side wall of the transmission chamber (312). The output wheel (314) is connected to the drive motor (321) via a rubber transmission belt (320).

2. The PCB circuit board processing and fixing device according to claim 1, characterized in that: The fixed fixture (3) further includes a bottom rotating shaft (302), a bottom slot (303), a torsion spring (304), a top slot (305), a vertical screw (306), and a supporting middle arm (307). The bottom rotating shaft (302) is rotatably mounted on the fixed base (301). The bottom slot (303) is mounted on the bottom rotating shaft (302). The torsion spring (304) is sleeved on the bottom rotating shaft (302). One end of the torsion spring (304) is fixedly connected to the fixed base (301), and the other end of the torsion spring (304) is fixedly connected to the bottom slot (303). The top slot (305) is slidably connected to the fixed base (301). The vertical screw (306) is rotatably connected to the fixed base (301). The vertical screw (306) is threadedly connected to the top slot (305). The supporting middle arm (307) is located inside the fixed base (301).

3. The PCB circuit board processing and fixing device according to claim 2, characterized in that: The rotating fixture (2) further includes a rotating lead screw (202), a rotating motor (205), and a rotating limiting arm (206). The rotating lead screw (202) is rotatably mounted on the rotating base (201). The rotating slide (203) is threadedly connected to the rotating lead screw (202). The rotating motor (205) is located inside the rotating base (201). One end of the rotating limiting arm (206) is rotatably connected to the rotating base (201), and the other end of the rotating limiting arm (206) is rotatably connected to the rotating base (204).

4. The PCB circuit board processing and fixing device according to claim 3, characterized in that: The transmission compartment (312) is slidably connected to symmetrical side slots (322), and a side lead screw (323) is rotatably connected inside the transmission compartment (312). The symmetrical side slots (322) and the side lead screw (323) are threadedly connected.

5. The PCB circuit board processing and fixing device according to claim 4, characterized in that: The outer end of the main output shaft (313) is provided with a side shaft output gear (327), and the side lead screw (323) is provided with a side follower gear (324). The side follower gear (324) meshes with the side shaft output gear (327).

6. The PCB circuit board processing and fixing device according to claim 5, characterized in that: The vertical lead screw (306) is provided with a vertical follower gear (326), and the outer end of the auxiliary transmission shaft (318) is provided with a vertical shaft output gear (325). The vertical shaft output gear (325) is meshed with the vertical follower gear (326).

7. A PCB circuit board processing and fixing device according to claim 6, characterized in that: The bottom rotating shaft (302) is provided with a rotating gear (308), the fixed base (301) is equipped with a rotating cylinder (310), the fixed base (301) is provided with a sliding rotating rack (309), the rotating rack (309) is meshed with the rotating gear (308), and the rotating rack (309) is fixedly connected to the telescopic end of the rotating cylinder (310).

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