Circuit board edge cutting device

Abstract

The application provides a circuit board edge cutting device, and belongs to the technical field of circuit board cutting. The device comprises a conveying mechanism, a baffle, a plurality of clamping mechanisms and a cutting mechanism. The conveying mechanism comprises a pair of support frames and a plurality of conveying rollers. The plurality of conveying rollers are arranged between the pair of support frames, and adjacent conveying rollers have a spacing area. One of the support frames is provided with a strip-shaped stopper above, and the conveying rollers are each provided with an annular groove on the circumferential side. The baffle is arranged in one spacing area. The plurality of clamping mechanisms are respectively arranged in the plurality of spacing areas. The top of each clamping mechanism is connected with a rotating shaft. The rotating shaft is rotatably connected with the pushing end of a pushing mechanism. The two ends of the rotating shaft are respectively slidably arranged in a pair of strip-shaped frames. The cutting mechanism is connected with the moving end of a linear mechanism. The linear mechanism is arranged below the pair of strip-shaped frames. The rotating end of a rotary air cylinder is connected with one end of the rotating shaft. The rotary air cylinder is provided with a rectangular first sliding block on the side. The first sliding block is slidably arranged in the strip-shaped frame. The circuit board substrate cutting can be completed on the conveying mechanism, and automatic discharging can be performed.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of circuit board cutting, and particularly relates to a circuit board edge cutting device. BACKGROUND

[0002] In the production process of a circuit board, a large-size substrate needs to be cut to form a predetermined size, so as to match the width or thickness of the circuit board to be processed, so as to ensure the uniformity and precision of the substrate size and improve the efficiency of automatic production. The existing cutting method, for example, the edge cutting machine for hard circuit board processing disclosed in the patent with the publication number CN208001408U, needs to manually transfer the substrate from the conveying device to the positioning device, adjust the position of the substrate through the positioning device, complete the alignment of the substrate and the cutting device, and then press the substrate to cut it. After cutting, the cut substrate and the cut waste need to be manually transferred, which is low in efficiency and labor-consuming, and therefore needs to be improved. SUMMARY

[0003] In order to solve the above-mentioned defects of the prior art, the application provides a circuit board edge cutting device which can complete the cutting of the circuit board substrate on the conveying mechanism and automatically transfer the cut circuit board substrate and the cut waste.

[0004] In order to achieve the above-mentioned purpose, the application adopts the following technology:

[0005] A circuit board edge cutting device comprises:

[0006] A conveying mechanism comprises a pair of support frames and a plurality of conveying rollers which are synchronously rotatably arranged between the pair of support frames, and each adjacent conveying roller has a spacing region with the same width. One of the support frames is provided with a strip-shaped block above the length direction, and the conveying rollers are each provided with an annular groove on the side.

[0007] A baffle is arranged in one of the spacing regions and moves up and down in the vertical direction to block the conveyed circuit board substrate.

[0008] A plurality of clamping mechanisms are arranged in the plurality of spacing regions, and one of the clamping mechanisms at the end is aligned with the baffle to clamp the cutting position of the circuit board substrate. The top of each clamping mechanism is fixedly connected with a rotating shaft, the rotating shaft is rotatably connected with the pushing end of a pushing mechanism, the pushing mechanism is used to drive the clamping mechanism to move along the width direction of the conveying mechanism, and the two ends of the rotating shaft are slidably arranged in a pair of horizontally arranged strip-shaped frames. The strip-shaped frames are arranged above the conveying mechanism in a spaced manner, and the length direction of the strip-shaped frames is parallel to the width direction of the conveying mechanism.

[0009] The cutting mechanism is connected with the moving end of a linear mechanism, the linear mechanism is arranged below a pair of strip frames, the moving direction of the moving end of the linear mechanism is parallel to the length direction of the conveying mechanism, and the cutting part of the cutting mechanism is located in the annular groove;

[0010] The rotating cylinder is connected with one end of the rotating shaft, the side of the rotating cylinder is provided with a rectangular first sliding block, the first sliding block is slidingly arranged in the strip frame on the same side, and the height of the first sliding block matches the height of the inside of the strip frame.

[0011] Further, the pushing mechanism comprises a linear cylinder and a first push rod, the fixed end of the linear cylinder is hingedly connected with a hinged seat, the hinged seat is fixed on a support frame, the telescopic end of the linear cylinder is rotatably connected with a sliding rod parallel to the rotating shaft, the two ends of the sliding rod are slidingly arranged in two vertical frames respectively, the vertical frames are fixed on the support frames on the same side, the sliding rod is rotatably connected with one end of a pair of first push rods, the other end of the pair of first push rods is rotatably connected with the rotating shaft, and the pair of first push rods are respectively abutted with the inner sides of the two vertical frames.

[0012] Further, the two ends of the top of the linear mechanism are provided with a second sliding block, and the two second sliding blocks are slidingly connected in the two strip frames respectively.

[0013] Further, the top of the strip frame is provided with a first strip groove, and the first strip groove is provided with a first screw, and the two first screws are connected with the top of the two second sliding blocks respectively, when the first screw is tightened, the top of the first screw is abutted with the top of the strip frame.

[0014] Further, the clamping mechanism comprises a lower plate, an upper plate and a pressing cylinder, the lower plate and the upper plate are horizontally arranged and vertically connected with the inner sides of the corresponding fixed rods, the height of the lower plate matches the height of the top of the conveying roller, the pressing cylinder is fixed on the top of the upper plate, the telescopic end of the pressing cylinder extends between the lower plate and the upper plate through the upper plate, and the circuit board substrate above the lower plate is pressed.

[0015] Further, the lower plate and the upper plate are connected with a connecting block through the corresponding fixed rods, and the plurality of connecting blocks are fixedly connected with a connecting rod.

[0016] Further, one of the fixed rods is provided with a fixed sheet above the upper plate, and a second screw vertically arranged is threadedly connected with the fixed sheet, when the second screw is tightened, the bottom of the second screw is abutted with the upper plate.

[0017] Furthermore, a fixed seat is provided below the conveyor roller, and a receiving groove is opened on the top of one side of the fixed seat. A baffle is slidably connected to the receiving groove in the vertical direction. A first push block is provided at the bottom of the baffle, and a second push rod is provided below the first push block. A second push block is formed on the top of one end of the second push rod. The top surface of the second push block is a first inclined surface that slopes upward toward one end of the second push rod. The bottom surface of the first push block is a second inclined surface that is parallel to and contacts the first inclined surface. The other end of the second push rod passes through one end of the fixed seat and is connected to a vertical plate. The vertical plate is located on the side of the fixed rod away from the annular groove. A spring is connected between the bottom of the baffle and the bottom wall of the receiving groove. When the baffle moves upward and protrudes from the top of the conveyor roller, the spring is in a stretched state. When the pushing mechanism drives the fixed rod to move outward to the maximum extent, the fixed rod pushes the vertical plate outward to move a preset distance, and the top of the baffle protrudes from the top of the conveyor roller. When the pushing mechanism drives the fixed rod to move inward to the maximum extent, the height of the top of the baffle is lower than the height of the top of the conveyor roller.

[0018] Furthermore, a guide rod is connected to the bottom of the support frame closest to the vertical plate via a fixing block. The length direction of the guide rod is parallel to the length direction of the second push rod, and the guide rod passes through the vertical plate.

[0019] Furthermore, a strip-shaped through groove is provided on the second push rod along its length direction. There is a pair of springs, one of which is spaced apart at the end of the second push rod away from the vertical plate, and the bottom of the other spring passes through the strip-shaped through groove and connects to the wall at the bottom of the receiving groove.

[0020] The beneficial effects of this invention are as follows:

[0021] 1. While conveying the circuit board substrate on the conveying mechanism, the circuit board substrate can be cut at the same time, and the cut circuit board substrate and the cut waste can be automatically transferred, which can effectively improve the efficiency of circuit board edge cutting and reduce manual operation.

[0022] 2. The position of the cutting mechanism can be adjusted by sliding the second slider, thereby adjusting the cutting width of the circuit board substrate. After adjusting the cutting width of the circuit board substrate by sliding the second slider, multiple connecting blocks can be moved by the connecting rod to adjust the distance between the pressing cylinder and the strip block. This allows the pressing cylinder to press down the waste material to be cut near the cutting point of the circuit board substrate, improving the clamping effect and preventing the circuit board substrate from shaking during the cutting process.

[0023] 3. During the movement of the fixed rod, the second push rod can be moved by pushing the vertical plate to automatically push the baffle up. After the fixed rod moves toward the strip block, the spring can drive the baffle to move down automatically. There is no need to set up an additional power source to control the vertical plate to move up and down. Attached Figure Description

[0024] Figure 1It is the overall structure perspective view of the first visual angle of the embodiment device of the application.

[0025] Figure 2 It is the overall structure perspective view of the second visual angle of the embodiment device of the application.

[0026] Figure 3 It is the Figure 2 Enlarged view of middle B part.

[0027] Figure 4 It is the top view of the embodiment device of the application.

[0028] Figure 5 It is the Figure 1 Enlarged view of middle A part.

[0029] Figure 6 It is the front view of the embodiment device of the application.

[0030] Figure 7 It is the Figure 6 Enlarged view of middle C part.

[0031] Figure 8 It is the overall structure perspective view of the third visual angle of the embodiment device of the application.

[0032] Figure 9 It is the Figure 8 Enlarged view of middle D part.

[0033] Figure 10 It is the partial structure perspective view of the embodiment device of the application.

[0034] The figure mark: conveying mechanism-1, support frame-101, conveying roller-102, strip-shaped stopper-103, annular groove-1021, interval area-104, circuit board substrate-2, baffle-3, clamping mechanism-4, lower plate-401, upper plate-402, lower pressing air cylinder-403, fixed rod-404, connecting block-405, fixed sheet-4041, second screw-4042, rotary air cylinder-5, rotating shaft-501, first sliding block-502, strip-shaped frame-6, first strip-shaped groove-601, pushing mechanism-7, linear air cylinder-701, hinged seat-7011, first pushing rod-702, sliding rod-7021, vertical frame-703, cutting mechanism-8, linear mechanism-9, second sliding block-901, connecting rod-10, first screw-11, fixed seat-12, second pushing rod-13, guide rod-14, containing groove-1201, first pushing block-301, second pushing block-1301, spring-302, strip-shaped through groove-1302, vertical plate-1303, fixed block-1401. DETAILED DESCRIPTION

[0035] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the embodiments of the present application will be described in detail below with reference to the drawings, but the described embodiments of the present application are only a part of the embodiments of the present application, not all the embodiments of the present application.

[0036] The embodiment of the present application provides a circuit board edge cutting device, as shown in the drawings, comprising a conveying mechanism 1, a baffle 3, a clamping mechanism 4, a cutting mechanism 8, a rotary cylinder 5 and the like. Figures 1-10

[0037] Specifically, the conveying mechanism 1 is used for conveying the circuit board substrate 2 which needs to be cut, and comprises a pair of support frames 101 and a plurality of conveying rollers 102, the plurality of conveying rollers 102 are synchronously rotatably arranged between the pair of support frames 101, and each adjacent conveying roller 102 has a spacing region 104 with the same width, one of the support frames 101 is provided with a strip-shaped stopper 103 above along the length direction, and annular grooves 1021 are formed in the circumferal side of the conveying roller 102;

[0038] The baffle 3 is arranged in one of the spacing regions 104, and the baffle 3 is arranged to move up and down along the vertical direction, and is used for blocking the circuit board substrate 2 conveyed on the conveying roller 102, specifically, a lifting mechanism can be arranged to drive the baffle 3 to lift; the clamping mechanism 4 is a plurality of clamping mechanisms, is arranged inside the other support frame 101, and is arranged in the plurality of spacing regions 104 respectively, and the clamping mechanism 4 at the end is aligned with the baffle 3, and is used for clamping the cutting position of the circuit board substrate 2, the top of the plurality of clamping mechanisms 4 is fixedly connected with a rotating shaft 501, the rotating shaft 501 is rotatably connected with the pushing end of a pushing mechanism 7, the pushing mechanism 7 is used for driving the clamping mechanism 4 to move along the width direction of the conveying mechanism 1, the two ends of the rotating shaft 501 are respectively slidably arranged in a pair of transversely arranged strip-shaped frames 6, the strip-shaped frames 6 are arranged in the spacing on the top of the conveying mechanism 1, and the length direction of the strip-shaped frames 6 is parallel to the width direction of the conveying mechanism 1; the cutting mechanism 8 is connected with the moving end of a linear mechanism 9, the linear mechanism 9 is arranged below the pair of strip-shaped frames 6, the moving direction of the moving end of the linear mechanism 9 is parallel to the length direction of the conveying mechanism 1, and the cutting part of the cutting mechanism 8 is in the annular groove 1021, specifically, the cutting mechanism 8 can be a cutting saw, the bottom of the saw blade of the cutting saw is arranged in the annular groove 1021, and the saw blade is perpendicular to the conveying roller 102; the rotating end of the rotary cylinder 5 is connected with one end of the rotating shaft 501, the side surface of the rotary cylinder 5 is provided with a rectangular first sliding block 502, the first sliding block 502 is slidably arranged in the same side strip-shaped frame 6, and the height of the first sliding block 502 matches the internal height of the strip-shaped frame 6.

[0039] ​In actual use, the other circuit board substrate 2 conveying device with the same height as the conveying mechanism 1 can be arranged at both ends of the conveying mechanism 1 to load and unload the circuit board substrate 2. First, the baffle 3 is lifted to protrude from the conveying roller 102. When the circuit board substrate 2 to be cut is conveyed to the conveying mechanism 1, one end of the circuit board substrate 2 is blocked by the baffle 3. With the conveying roller 102 continuing to move the circuit board substrate 2, one end of the circuit board substrate 2 moves to be parallel to the baffle 3. Then, the pushing mechanism 7 drives the plurality of clamping mechanisms 4 to move towards the circuit board substrate 2 through the rotating shaft 501 until the circuit board substrate 2 is pushed to abut against the strip-shaped stopper 103. At the same time, the clamping mechanism 4 clamps the circuit board substrate 2, which can realize the fixation of the circuit board substrate 2 and the alignment with the cutting mechanism 8. Then, the cutting mechanism 8 is opened, and the linear mechanism 9 drives the cutting mechanism 8 to move along the length direction of the conveying mechanism 1, which can complete the cutting of the circuit board substrate 2. Then, the pushing mechanism 7 drives the clamping mechanism 4 to retreat, the rotating cylinder 5 drives the rotating shaft 501 and the clamping mechanism 4 to rotate upward by 270 degrees, and the clamping mechanism 4 releases the clamping of the cut-off circuit board substrate 2 waste, which can complete the unloading of the circuit board substrate 2 waste. The baffle 3 is controlled to descend below the top of the conveying roller 102, and then the conveying mechanism 1 continues to convey the circuit board substrate 2 to complete the unloading of the circuit board substrate 2.

[0040] Specifically, referring to Figure 2 、 Figure 3 , the pushing mechanism 7 includes a linear cylinder 701 and a first push rod 702. The fixed end of the linear cylinder 701 is hinged to a hinge seat 7011, and the hinge seat 7011 is fixed to a support frame 101 on the same side as the clamping mechanism 4. The telescopic end of the linear cylinder 701 is rotatably connected with a slide rod 7021 parallel to the rotating shaft 501. The two ends of the slide rod 7021 are respectively slidably arranged in two vertical frames 703, and the vertical frames 703 are fixed to the support frame 101 on the same side. The slide rod 7021 is rotatably connected with one end of a pair of first push rods 702, and the other end of the pair of first push rods 702 is rotatably connected with the rotating shaft 501. The pair of first push rods 702 are respectively abutted with the inner sides of the two vertical frames 703. When the telescopic end of the linear mechanism 9 is pushed out, the slide rod 7021 moves upward along the vertical frame 703, thereby driving the first push rod 702 to move upward and pushing the rotating shaft 501 and the clamping mechanism 4 towards the strip-shaped stopper 103. Because the linear cylinder 701 is in an inclined state, an inclined guide plate can be arranged outside the linear cylinder 701 to realize the unloading of the circuit board substrate 2 waste. This can avoid the situation that the linear cylinder 701 may block the circuit board substrate 2 waste falling from a high place when only the linear cylinder 701 is used as the pushing mechanism 7. Moreover, because the pair of first push rods 702 are respectively abutted with the inner sides of the two vertical frames 703, the first push rod 702 can be prevented from shaking left and right, thereby improving the stability of the rotating shaft 501 and the clamping mechanism 4.

[0041] Preferably, refer to Figure 4 、 Figure 6 , the top of the linear mechanism 9 is provided with a second sliding block 901 at both ends, and the two second sliding blocks 901 are respectively slidably connected to the two strip-shaped frames 6. By sliding the second sliding block 901, the position of the cutting mechanism 8 can be adjusted, thereby realizing the adjustment of the cutting width of the circuit board substrate 2. Specifically, refer to Figure 4 , the top of the strip-shaped frame 6 is provided with a first strip-shaped groove 601, and the first strip-shaped groove 601 is provided with a first screw 11. The two first screws 11 are respectively connected to the top of the two second sliding blocks 901. When the first screw 11 is tightened, the top of the first screw 11 abuts against the top of the strip-shaped frame 6, so as to fix the second sliding block 901 and further fix the linear mechanism 9.

[0042] Specifically, refer to Figure 5 , the clamping mechanism 4 comprises a lower plate 401, an upper plate 402 and a downward pressing cylinder 403. The lower plate 401 and the upper plate 402 are both horizontally arranged and are both vertically connected to the inner side of a corresponding fixed rod 404. The height of the lower plate 401 matches the height of the top of the conveying roller 102. The downward pressing cylinder 403 is fixed to the top of the upper plate 402. The extension end of the downward pressing cylinder 403 extends through the upper plate 402 to the space between the lower plate 401 and the upper plate 402, so as to press the circuit board substrate 2 above the lower plate 401. When it is needed to press the circuit board substrate 2, the extension end of the downward pressing cylinder 403 can be pushed out downward. Preferably, refer to Figures 5-7 , the lower plate 401 and the upper plate 402 are both connected to a connecting block 405 through the corresponding fixed rod 404. A plurality of connecting blocks 405 are fixedly connected to a connecting rod 10. After the cutting width of the circuit board substrate 2 is adjusted by sliding the second sliding block 901, the plurality of connecting blocks 405 can be moved along the width direction of the conveying mechanism 1 by the connecting rod 10, so as to adjust the distance between the downward pressing cylinder 403 and the strip-shaped blocking block 103. In this way, the downward pressing cylinder 403 can press the waste to be cut at the cutting position close to the circuit board substrate 2, so as to improve the pressing effect and avoid the shaking of the circuit board substrate 2 during the cutting process. Specifically, refer to Figure 7 , one of the fixed rods 404 is provided with a fixed sheet 4041 above the upper plate 402. A second vertically arranged second screw 4042 is threadedly connected to the fixed sheet 4041. When the second screw 4042 is tightened, the bottom of the second screw 4042 abuts against the upper plate 402, so as to fix the clamping mechanism 4 after the distance is adjusted.

[0043] Preferably, refer to Figure 8 、 Figure 9The fixed seat 12 is provided below the conveying roller 102, a containing groove 1201 is formed in the top of one side of the fixed seat 12, the baffle 3 is slidably connected in the containing groove 1201 in the vertical direction, the first push block 301 is arranged at the bottom of the baffle 3, the second push rod 13 is arranged below the first push block 301, the second push block 1301 is formed at the top of one end of the second push rod 13, the top surface of the second push block 1301 is a first inclined surface which is inclined upward towards the one end of the second push rod 13, the bottom surface of the first push block 301 is a second inclined surface which is parallel to and in contact with the first inclined surface, specifically, the first inclined surface and the second inclined surface can be arranged to have the same inclination angle, the other end of the second push rod 13 penetrates through one end of the fixed seat 12 and is connected with a vertical plate 1303, the vertical plate 1303 is arranged at one side of the fixed rod 404 which is away from the annular groove 1021, the spring 302 is connected between the bottom of the baffle 3 and the wall of the bottom of the containing groove 1201, when the baffle 3 moves upward to protrude from the top of the conveying roller 102, the spring 302 is in the stretched state, when the pushing mechanism 7 drives the fixed rod 404 to move outward to the maximum limit, the fixed rod 404 drives the vertical plate 1303 to move outward by a preset distance, the first push block 301 and the baffle 3 are pushed upward by the second push block 1301, so that the top of the baffle 3 protrudes from the top of the conveying roller 102, when the pushing mechanism 7 drives the fixed rod 404 to move inward to the maximum limit, the second push rod 13 is no longer subjected to the thrust of the fixed rod 404, because the baffle 3 is subjected to the downward pulling force of the spring 302 at this time, the baffle 3 moves downward below the top of the conveying roller 102, the first push block 301 moves the second push rod 13 in the direction close to the strip-shaped baffle through the second push block 1301, so that the second push rod 13 is reset.

[0044] Specifically, referring to Figure 8 The support frame 101 closest to the vertical plate 1303 is connected with a guide rod 14 at the bottom through a fixed block 1401, the length direction of the guide rod 14 is parallel to the length direction of the second push rod 13, the guide rod 14 penetrates through the vertical plate 1303, which is used to improve the stability of the vertical plate 1303 during movement and prevent the vertical plate 1303 and the second push rod 13 from deviating during movement. More specifically, referring to Figure 10 The second push rod 13 is provided with a strip-shaped through groove 1302 along the length direction, the spring 302 is a pair of springs, one of which is arranged at the end of the second push rod 13 away from the vertical plate 1303, and the other spring 302 is connected with the wall of the bottom of the containing groove 1201 through the strip-shaped through groove 1302. Because the spring 302 is arranged in the middle of the containing groove 1201, it will affect the movement of the second push rod 13, by arranging the strip-shaped through groove 1302 on the second push rod 13, two springs 302 are symmetrically arranged in the containing area to make the two ends of the bottom of the baffle 3 bear force uniformly, which can avoid that only one spring 302 is arranged at one end of the containing area, the one end of the baffle 3 bears too much force, and then the friction between the baffle 3 and the inner side of the fixed seat 12 is too large, which affects the upward and downward sliding of the baffle 3.

[0045] The above description is only the preferred embodiment of the present application, and is not intended to be the only or the best. Those skilled in the art should understand that various changes or equivalent replacements made to the present application without departing from the scope of the present application, all belong to the protection scope of the present application.

Claims

1. A circuit board trimming device, characterized in that, include: The conveying mechanism (1) includes a pair of support frames (101) and a plurality of conveying rollers (102) that are synchronously rotated between the pair of support frames (101). There is a gap area (104) of the same width between adjacent conveying rollers (102). A strip-shaped stop (103) is provided above one of the support frames (101) along the length direction. Annular grooves (1021) are opened on the periphery of each conveying roller (102). A baffle (3) is provided in one of the interval areas (104), and the baffle (3) is moved up and down in the vertical direction to block the conveyed circuit board substrate (2). Multiple clamping mechanisms (4) are respectively located in multiple interval areas (104), and the clamping mechanism (4) at the very end is aligned with the baffle (3) for clamping the part of the circuit board substrate (2) to be cut. The top of each clamping mechanism (4) is fixedly connected to a rotating shaft (501). The rotating shaft (501) is rotatably connected to the pushing end of a pushing mechanism (7). The pushing mechanism (7) is used to drive the clamping mechanism (4) to move along the width direction of the conveying mechanism (1). The two ends of the rotating shaft (501) are respectively slidably located in a pair of horizontally arranged strip frames (6). The strip frames (6) are spaced above the conveying mechanism (1), and the length direction of the strip frames (6) is parallel to the width direction of the conveying mechanism (1). The cutting mechanism (8) is connected to the movable end of a linear mechanism (9), which is located below a pair of strip frames (6). The moving direction of the movable end of the linear mechanism (9) is parallel to the length direction of the conveying mechanism (1). The cutting part of the cutting mechanism (8) is located in the annular groove (1021). A rotary cylinder (5) has its rotating end connected to one end of a rotating shaft (501). A rectangular first slider (502) is provided on the side of the rotary cylinder (5). The first slider (502) is slidably disposed in the strip frame (6) on the same side, and the height of the first slider (502) matches the height inside the strip frame (6).

2. The circuit board trimming device according to claim 1, characterized in that, The pushing mechanism (7) includes a linear cylinder (701) and a first push rod (702). The fixed end of the linear cylinder (701) is hinged to a hinge seat (7011). The hinge seat (7011) is fixed on a support frame (101). The telescopic end of the linear cylinder (701) is rotatably connected to a slide rod (7021) parallel to the rotating shaft (501). The two ends of the slide rod (7021) are respectively slidably disposed in two vertical frames (703). The vertical frames (703) are fixed on the support frame (101) on the same side. The slide rod (7021) is rotatably connected to one end of a pair of first push rods (702). The other end of the pair of first push rods (702) is rotatably connected to the rotating shaft (501). The pair of first push rods (702) respectively abut against the inner side of the two vertical frames (703).

3. The circuit board trimming device according to claim 2, characterized in that, The linear mechanism (9) has a second slider (901) at both ends of its top, and the two second sliders (901) are slidably connected to the two strip frames (6).

4. The circuit board trimming device according to claim 3, characterized in that, The top of each strip frame (6) is provided with a first strip groove (601), and each first strip groove (601) is provided with a first screw (11). The two first screws (11) are respectively connected to the top of the two second sliders (901). When the first screw (11) is tightened, the top of the first screw (11) abuts against the top of the strip frame (6).

5. A circuit board trimming device according to claim 4, characterized in that, The clamping mechanism (4) includes a lower plate (401), an upper plate (402), and a pressing cylinder (403). The lower plate (401) and the upper plate (402) are both horizontally arranged and vertically connected to the inner side of the corresponding fixing rod (404). The height of the lower plate (401) matches the height of the top of the conveying roller (102). The pressing cylinder (403) is fixed to the top of the upper part. The telescopic end of the pressing cylinder (403) extends through the upper plate (402) to the space between the lower plate (401) and the upper plate (402) to press the circuit board substrate (2) above the lower plate (401).

6. A circuit board trimming device according to claim 5, characterized in that, The lower plate (401) and the upper plate (402) are both connected to a connecting block (405) through the corresponding fixing rod (404), and multiple connecting blocks (405) are all fixedly connected to a connecting rod (10).

7. A circuit board trimming device according to claim 6, characterized in that, One of the fixing rods (404) has a fixing plate (4041) on its outer side. The fixing plate (4041) is located above the upper plate (402). A vertically arranged second screw (4042) is threaded onto the fixing plate (4041). When the second screw (4042) is tightened, the bottom of the second screw (4042) abuts against the upper plate (402).

8. A circuit board trimming device according to claim 1, characterized in that, A fixed seat (12) is provided below the conveyor roller (102). A receiving groove (1201) is provided on the top of one side of the fixed seat (12). A baffle (3) is slidably connected in the receiving groove (1201) in the vertical direction. A first push block (301) is provided at the bottom of the baffle (3). A second push rod (13) is provided below the first push block (301). A second push block (1301) is formed on the top of one end of the second push rod (13). The top surface of the second push block (1301) is a first inclined surface that is inclined upward toward one end of the second push rod (13). The bottom surface of the first push block (301) is a second inclined surface that is parallel to and in contact with the first inclined surface. The other end of the second push rod (13) passes through one end of the fixed seat (12) and is connected to a vertical plate (1303). Next, the vertical plate (1303) is located on the side of a fixed rod (404) away from the annular groove (1021). A spring (302) is connected between the bottom of the baffle (3) and the wall of the bottom of the receiving groove (1201). When the baffle (3) moves upward to protrude from the top of the conveying roller (102), the spring (302) is in a stretched state. When the pushing mechanism (7) drives the fixed rod (404) to move outward to the maximum extent, the fixed rod (404) pushes the vertical plate (1303) to move outward by a preset distance, and the top of the baffle (3) protrudes from the top of the conveying roller (102). When the pushing mechanism (7) drives the fixed rod (404) to move inward to the maximum extent, the top height of the baffle (3) is lower than the top height of the conveying roller (102).

9. A circuit board trimming device according to claim 8, characterized in that, The bottom of the support frame (101) closest to the vertical plate (1303) is connected to a guide rod (14) via a fixing block (1401). The length direction of the guide rod (14) is parallel to the length direction of the second push rod (13), and the guide rod (14) passes through the vertical plate (1303).

10. A circuit board trimming device according to claim 8, characterized in that, The second push rod (13) has a strip-shaped through groove (1302) along its length direction. There is a pair of springs (302). One spring (302) is spaced apart at the end of the second push rod (13) away from the vertical plate (1303). The bottom of the other spring (302) passes through the strip-shaped through groove (1302) and is connected to the wall at the bottom of the receiving groove (1201).

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