A limiting and fixing device and method for preventing carbon film plate from warping

Abstract

The application discloses a limiting and fixing device and method for preventing carbon film board from warping, and belongs to the technical field of circuit board processing devices and methods. The device comprises a conveying line arranged on a frame and extending along a preset direction to carry and convey the carbon film board; and a limiting and guiding mechanism comprising a crossbeam fixed on the frame, with a first air cylinder connected to one side of the extending end of the crossbeam, a piston rod on the first air cylinder connected to an X-axis sliding block, the X-axis sliding block and Y-axis sliding blocks at both ends of the crossbeam connected through first swing rods, and the X-axis sliding block and Y-axis sliding block connected to corresponding transverse sliding grooves and vertical sliding grooves on the crossbeam. The application can solve the technical problem that the cleaning direction of the cleaning mechanism is relatively single, the cleaning degree is poor, and when the marking position is not at the center position, the warping or shaking phenomenon is prone to occur due to the unbalanced stress, which greatly affects the marking processing quality.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of circuit board processing device and method, and particularly relates to a limiting and fixing device and method for preventing carbon film board from warping. BACKGROUND

[0002] ‌The carbon film board is a printed circuit board composed of a carbon film conductive pattern layer.

[0003] The main materials of the carbon film board include conductive ink and insulating substrate. The conductive ink is used to make circuit patterns, and the insulating substrate provides support and insulation functions. In the manufacturing process, the conductive ink is printed on the insulating substrate to form the required circuit patterns. This method is relatively easy and effective to produce various shapes of printed circuits, especially suitable for small power, low power consumption, high input impedance electronic products. The carbon film board is widely used in various electronic devices due to its low cost and reliable performance.

[0004] ‌During the processing of the carbon film board, if there are many particle impurities attached to the surface of the carbon film board, it will affect the quality of subsequent marking processing. Moreover, the existing cleaning mechanism has a single cleaning direction process and poor cleaning degree. During the marking work, the corresponding pressing marking process needs to be performed through the marking cylinder or the marking block. However, when the marking position is not at the center position, due to the unbalanced force, warping or shaking phenomenon is easily occurred, which greatly affects the marking processing quality and is not conducive to the improvement of the processing stability of the device. SUMMARY

[0005] The purpose of the present application is to provide a limiting and fixing device and method for preventing carbon film board from warping, which solves the technical problem that the cleaning mechanism has a single cleaning direction process and poor cleaning degree, and when the marking position is not at the center position, due to the unbalanced force, warping or shaking phenomenon is easily occurred, which greatly affects the marking processing quality.

[0006] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0007] A limiting and fixing device for preventing carbon film board from warping, comprising:

[0008] A conveying line is arranged on the frame and extends along a predetermined direction to carry and convey the carbon film board.

[0009] The limiting guide mechanism comprises a crossbeam fixed on the frame, the crossbeam is arranged in H type, and the extending end of the crossbeam is connected with a first air cylinder, the piston rod of the first air cylinder is connected with an X-axis slider, the X-axis slider is connected with Y-axis sliders at both ends of the crossbeam through first swing rods, and the X-axis slider and the Y-axis slider are connected with a horizontal sliding groove and a vertical sliding groove corresponding to the crossbeam.

[0010] The X-axis slider and the Y-axis slider are connected with a first cleaning brush and a second cleaning brush corresponding to the bottom, one end of the Y-axis slider is connected with a fixed plate through a support, the bottom of the fixed plate is movably connected with guide wheels, the guide wheels form a guide cavity connected with the carbon film plate, and the inner wall of the crossbeam is provided with a roller arranged in the length direction of the horizontal sliding groove and the vertical sliding groove.

[0011] Further, the X-axis slider and the Y-axis slider are integrally connected with protruding parts corresponding to the horizontal sliding groove and the vertical sliding groove at both ends, the first swing rods are installed on the X-axis slider and the Y-axis slider through rotary connection at both ends, the first cleaning brush and the second cleaning brush are installed with bristles through viscous fixation at the bottom, and the first cleaning brush and the second cleaning brush reciprocate in the X-axis direction and the Y-axis direction of the carbon film plate horizontal plane respectively under the action of the first air cylinder.

[0012] Further, it further comprises a pressing and fixing mechanism, the pressing and fixing mechanism comprises an L-shaped bent plate fixed on the frame, second air cylinders are fixedly installed at both sides of the bottom end of the L-shaped bent plate, the piston rod at the bottom of the second air cylinder is connected with a first lifting plate, and the first lifting plate is connected with a second lifting plate through a support around the bottom end.

[0013] Further, a driving motor is detachably installed at the center of the bottom end of the first lifting plate, the output shaft of the driving motor penetrates the shell and extends to a rotating disc, the outer wall edge of the rotating disc is provided with a rotating groove connected with the shell, the bottom of the rotating disc is connected with the second lifting plate through a bearing, both ends of the rotating disc are connected with abutting blocks through rotating rods, the outer wall of the abutting block is provided with a first slope, and the abutting block is provided with a first sliding block arranged on the second lifting plate.

[0014] Further, the second slope matched with the first slope is formed at both ends of the outer wall of the first sliding block, the first sliding block is connected with a limiting groove along the length direction of the limiting plate at both ends, the limiting plate is installed on the second lifting plate through plug-in fixation at the bottom, the first sliding block and the second sliding block are connected through a second swing rod, one end of the second sliding block is connected with the first lifting plate through a compression spring, and the other end penetrates the second lifting plate and extends to a pressing plate.

[0015] Further, the second lifting plate is provided with a movable opening connected with the second slider, and the two ends of the second swing rod are installed on the first slider and the second slider through a rotating connection mode.

[0016] Further, the extension end of the bottom end of the rotating disc penetrates through the second lifting plate and extends to the first stand column, the bottom of the first stand column is movably connected with rolling balls through a panel, the second stand column is arranged between the rolling balls and located at the center of the second lifting plate, a mark block is fixedly installed on the second stand column, and the mark block is abutted and attached to the carbon film plate through a pressing treatment mode.

[0017] Further, the bottom of the second lifting plate is provided with an annular groove connected with the first stand column, the sidewall of the panel is provided with an arc surface connected with the rolling ball, and the connecting position of the mark block and the second stand column is provided with a positioning hole and connected through a positioning pin locking fixed mode.

[0018] A limiting and fixing method for preventing carbon film plate from warping, comprising the following steps:

[0019] S1.1, place the carbon film plate on the conveying line, realize the simultaneous cleaning work of the carbon film plate in the horizontal X-axis direction and Y-axis direction through the limiting and guiding mechanism, and realize the centering and clamping work through the guide wheel to prevent deviation during transportation;

[0020] S1.2, when the conveying line transports the carbon film plate to the pressing and fixing mechanism, the second cylinder is started, and the mark block is pressed to perform the marking treatment on the carbon film plate;

[0021] S1.3, during the pressing treatment in step S1.2, the driving motor is started to drive the rotating disc to rotate, and under the action of mechanical transmission, the second slider drives the pressing plate to limit and press the two ends of the carbon film plate, and the rolling ball further limits and presses the outer wall edge of the carbon film plate through the rotating mode.

[0022] As described above, due to the adoption of the above technical scheme, the beneficial effects of the present application are:

[0023] The limiting and guiding mechanism is arranged, the first cylinder on the cross beam is started during the conveying process of the carbon film plate, the X-axis slider and the Y-axis slider on the cross beam drive the first cleaning brush and the second cleaning brush to make respective cleaning work in the horizontal direction through the pushing and cleaning mode, the cleaning mechanism realizes the cleaning work in multiple directions, so as to ensure the cleanliness of the carbon film plate, effectively facilitate the improvement of the marking treatment quality in the subsequent process, and the Y-axis slider can drive the reverse movement of the guide wheels on the two end fixed plates during the movement process, the guide wheels can effectively limit and guide the carbon film plate during the centering movement, so as to prevent the position deviation during the conveying process and improve the stability of the device work.

[0024] The pressing and fixing mechanism is arranged, the second cylinder can drive the marking block to move downward and realize the marking mark on the carbon film plate through the pressing treatment, meanwhile, the driving motor is started to drive the rotating disc to rotate, the rotating disc can drive the rotating rod to drive the rotating of the abutting block in the rotating process, the abutting block abuts against the first sliding block in the rotating process, the second sliding block moves downward and realizes the pressing work through the pressing plate by the rotating connection of the second rotating rod, the flatness of the carbon film plate is ensured and the carbon film plate is effectively fixed and limited to prevent the warping of the carbon film plate, the rotating disc can also drive the rolling ball on the first vertical column to rotate in a ring shape in the rotating process, the rolling ball can further fix and limit the carbon film plate around the marking block in the rotating process, so that the stability of the carbon film plate in the processing process is ensured and the marking treatment quality is effectively improved, in addition, the bearing not only ensures the free rotation of the rotating disc, but also supports and connects the second lifting plate in the ring groove, the design is reasonable and the integration performance is high.

[0025] (3) The whole carbon film plate limiting and fixing method is convenient to operate, has high automation degree and improves the work efficiency, the carbon film plate is effectively cleaned during the guiding and limiting work process, the cleaning direction is not single, the stability of the marking work is ensured through the multi-point limiting and fixing method in the pressing and marking process, the marking accuracy is improved, the limiting and fixing is realized through the combination of static pressing and dynamic rolling, and the product processing quality is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0027] Figure 1 is a structure diagram of a limiting and fixing device for preventing the warping of a carbon film plate Figure One ;

[0028] Figure 2 is a structure diagram of a limiting and fixing device for preventing the warping of a carbon film plate Figure Two ;

[0029] Figure 3 is a front view of the limiting and fixing device for preventing the warping of the carbon film plate

[0030] Figure 4 is a sectional view of the beam in the front view direction

[0031] Figure 5 It is a structural schematic diagram of the pressing and fixing mechanism of the present invention;

[0032] Figure 6 This is a schematic diagram of the connection between the first slider and the second slider of the present invention;

[0033] Figure 7 This invention Figure 2 A magnified view of point A;

[0034] Figure 8 It is a connection diagram of the turntable of the present invention;

[0035] Figure 9 The present invention is a flow chart of a limiting and fixing method for preventing a carbon film plate from warping.

[0036] Figure 1: Conveyor line; 2: Position limiting guide mechanism; 3: Crossbeam; 4: First cylinder; 5: X-axis slider; 6: Y-axis slider; 7: First swing arm; 8: Horizontal slide; 9: Vertical slide; 10: First cleaning brush; 11: Second cleaning brush; 12: Fixed plate; 13: Guide wheel; 14: Roller; 15: Pressing and fixing mechanism; 16: L-shaped bending plate; 17: Second cylinder; 18: First lifting plate; 19: Second Lifting plate; 20. Drive motor; 21. Housing; 22. Turntable; 23. Bearing; 24. Rotating rod; 25. Resistance block; 26. First slope; 27. First slider; 28. Second slope; 29. ​​Limiting plate; 30. Second slider; 31. Second swinging rod; 32. Compression spring; 33. Pressing plate; 34. First column; 35. Panel; 36. Rolling ball; 37. Second column; 38. Marking block; 39. Annular groove. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] Reference Manual Figure 1 and attached Figure 2 As shown, a limiting and fixing device for preventing a carbon film plate from warping comprises: a conveying line 1, which is arranged on a frame and extends along a preset direction for carrying and conveying the carbon film plate;

[0039] The limiting guide mechanism 2 includes a crossbeam 3 fixed on the frame, the crossbeam 3 is provided in an H shape, and one side of the extending end of the crossbeam 3 is connected with a first air cylinder 4, the piston rod on the first air cylinder 4 is connected with an X-axis sliding block 5, the X-axis sliding block 5 and the Y-axis sliding block 6 at the two ends of the crossbeam 3 are connected through first swing rods 7, the X-axis sliding block 5 and the Y-axis sliding block 6 are connected with a horizontal sliding groove 8 and a vertical sliding groove 9 close to the crossbeam 3 correspondingly;

[0040] The X-axis sliding block 5 and the Y-axis sliding block 6 are correspondingly connected with a first cleaning brush 10 and a second cleaning brush 11 at the bottom, one end of the Y-axis sliding block 6 is connected with a fixed plate 12 through a support, the fixed plate 12 is movably connected with guide wheels 13 at the bottom, the guide wheels 13 form a guide cavity connected with the carbon film plate between them, and the crossbeam 3 is provided with a roller 14 arranged in the length direction of the horizontal sliding groove 8 and the vertical sliding groove 9 on the inner wall.

[0041] The limiting guide mechanism 2 is arranged, in the conveying process of the carbon film plate, the first air cylinder 4 on the crossbeam 3 is started, the X-axis sliding block 5 and the Y-axis sliding block 6 on the crossbeam 3 drive the first cleaning brush 10 and the second cleaning brush 11 to do respective cleaning work in the horizontal direction through the pushing cleaning mode, the cleaning mechanism realizes the cleaning work in multiple directions, so as to ensure the cleanliness of the carbon film plate, effectively facilitate the improvement of the marking processing quality in the subsequent sequence, and the Y-axis sliding block 6 can drive the reverse movement of the guide wheels 13 on the fixed plates 12 at the two ends in the movement process, the guide wheels 13 can play an effective limiting guide role on the conveyed carbon film plate in the centering movement process, so as to prevent the position deviation in the conveying process and improve the stability of the device work.

[0042] Specifically, the transmission wheel on the conveying line 1 rotates through the driver, and then the meshing transmission of the sprocket and chain is realized, so that the overall transmission wheel on the conveying line 1 rotates synchronously, which can realize the corresponding conveying work of the carbon film plate. For the sprocket and chain assembly, it is a conventional technical means of the person skilled in the art, which will not be described in detail here, and the drawings are not shown, but it does not affect the implementation of the technical scheme of the present application.

[0043] The crossbeam 3 is provided in an H shape, which not only provides corresponding space for the horizontal sliding groove 8 and the vertical sliding groove 9, but also facilitates the synchronous movement of the Y-axis sliding blocks 6 at the two ends when the X-axis sliding block 5 moves. At the same time, the rollers 14 in the length direction of the horizontal sliding groove 8 and the vertical sliding groove 9 can reduce the friction between the X-axis sliding block 5 and the Y-axis sliding blocks 6 at the two ends during the movement, and the movement is realized through rolling friction, which reduces the friction damage and improves the service life of the device.

[0044] Reference Figure 1 , Figure 3 and Figure 4, X-axis slider 5 and Y-axis slider 6 both ends are integrally connected with the corresponding protruding part of transverse sliding groove 8 and vertical sliding groove 9, both ends of the first swing rod 7 are installed on the X-axis slider 5 and Y-axis slider 6 by rotating connection, the first cleaning brush 10 and the second cleaning brush 11 are both installed with bristles by viscous fixed way, with the first cylinder 4 starting, the first cleaning brush 10 and the second cleaning brush 11 reciprocate cleaning in the X-axis direction and Y-axis direction of the carbon film plate level respectively.

[0045] Specifically, the first cleaning brush 10 and the second cleaning brush 11 can realize effective cleaning of multiple positions by reciprocating cleaning in the X-axis direction and the Y-axis direction, thereby ensuring the cleanliness of the carbon film plate, and springs can be added between the fixed plates 12 connected by the bracket, which can improve the buffering effect of the guide wheel 13, thereby preventing the guide wheel 13 from generating a large force when contacting the carbon film plate.

[0046] In addition, the bristles on the first cleaning brush 10 and the second cleaning brush 11 can be made of nylon material, which is soft and not easy to conduct electricity, can avoid electrical problems when cleaning the circuit board, and will not leave any substances on the carbon film plate, suitable for delicate cleaning work.

[0047] Reference Figure 2 , Figure 5 , Figure 6 , Figure 7 and Figure 8 A limiting and fixing device for preventing the carbon film plate from warping further comprises a pressing and fixing mechanism 15, the pressing and fixing mechanism 15 comprises an L-shaped bent plate 16 fixed on the frame, second cylinders 17 are fixedly installed on both sides of the bottom end of the L-shaped bent plate 16, the piston rods at the bottom of the second cylinders 17 are connected to first lifting plates 18, and the first lifting plates 18 are connected to second lifting plates 19 through brackets around the bottom ends.

[0048] The pressing and fixing mechanism 15 is arranged, the second cylinder 17 can drive the marking block 38 to move downward and realize the marking mark on the carbon film plate through the pressing treatment, meanwhile, the driving motor 20 is started to drive the rotating disc 22 to rotate, the rotating disc 22 can drive the rotating rod 24 to drive the abutting block 25 to rotate in the rotating process, the abutting block 25 is abutted with the first sliding block 27 in the rotating process, the second sliding block 30 is moved downward and realizes the pressing work through the pressing plate 33 by the rotating connection of the second swing rod 31, the flatness of the carbon film plate itself is ensured, and the carbon film plate can be effectively fixed and limited, so that the carbon film plate warping phenomenon is prevented, the rotating disc 22 can also drive the rolling ball 36 on the first vertical column 34 to rotate in a ring shape in the rotating process, the rolling ball 36 can further fix and limit the carbon film plate around the abutting block 38 in the rotating process, so that the stability of the carbon film plate in the processing process is ensured, the marking processing quality is effectively improved, in addition, the bearing 23 not only ensures the free rotation of the rotating disc 22, but also supports and connects the second lifting plate 19 in the annular groove 39, the design is reasonable, and the integration performance is high.

[0049] The driving motor 20 is detachably installed at the bottom center of the first lifting plate 18, the output shaft of the driving motor 20 penetrates the shell 21 and extends to the rotating disc 22, the rotating groove connected with the shell 21 is arranged on the outer wall edge of the rotating disc 22, the bottom of the rotating disc 22 is connected with the second lifting plate 19 through the bearing 23, the rotating rods 24 are connected with the abutting blocks 25 at the two ends of the rotating disc 22, the first slope surfaces 26 are arranged on the outer walls of the abutting blocks 25, and the first sliding blocks 27 are arranged outside the abutting blocks 25 and placed on the second lifting plate 19.

[0050] Specifically, the second slope surfaces 28 matched with the first slope surfaces 26 are arranged at the two ends of the outer wall of the first sliding block 27, the limiting grooves are connected with the first sliding block 27 along the length direction of the limiting plate 29 at the two ends of the first sliding block 27, the limiting plate 29 is installed on the second lifting plate 19 in a plug-in fixed manner at the bottom, the second swing rod 31 is connected between the first sliding block 27 and the second sliding block 30, one end of the second sliding block 30 is connected with the first lifting plate 18 through the compression spring 32, and the other end penetrates the second lifting plate 19 and extends to the pressing plate 33.

[0051] The first slope surfaces 26 on the outer walls of the abutting blocks 25 cooperate with the second slope surfaces 28 on the first sliding blocks 27, so that the contact area is effectively increased when the two are contacted and collided, the acting pressure is reduced, the smoothness of the structure is improved by the slope surfaces, and the friction damage between structural members is reduced.

[0052] The second lifting plate 19 is provided with a movable opening connected with the second sliding block 30, the second swing rod 31 is installed on the first sliding block 27 and the second sliding block 30 through a rotating connection mode at both ends, the extension end of the rotating disc 22 penetrates through the second lifting plate 19 and extends to the first vertical column 34, the first vertical column 34 is movably connected with the rolling balls 36 through the face plate 35 at the bottom, the second vertical column 37 is arranged at the center of the second lifting plate 19 between the rolling balls 36, the second vertical column 37 is fixedly installed with the mark block 38, and the mark block 38 is in contact with the carbon film plate through a pressing treatment mode.

[0053] In addition, the second lifting plate 19 is provided with an annular groove 39 connected with the first vertical column 34, the side wall of the face plate 35 is provided with an arc surface connected with the rolling balls 36, and the connecting position of the mark block 38 and the second vertical column 37 is provided with a positioning hole and connected through a positioning pin locking fixed mode, which is connected through a positioning pin locking fixed mode, facilitating the installation and disassembly of the structure, facilitating personnel operation and improving work efficiency.

[0054] Reference Figure 9 A limiting and fixing method for preventing the carbon film plate from warping, comprising the following steps:

[0055] S1.1, place the carbon film plate on the conveying line 1, and simultaneously clean the carbon film plate in the horizontal X-axis direction and the Y-axis direction through the limiting and guiding mechanism 2, and center the clamping work through the guide wheel 13 to prevent deviation during transportation;

[0056] S1.2, when the conveying line 1 transports the carbon film plate to the pressing and fixing mechanism 15, the second air cylinder 17 is started, and the mark block 38 is pressed to mark the carbon film plate;

[0057] S1.3, during the pressing process of step S1.2, the driving motor 20 is started, the rotating disc 22 is rotated, the second sliding block 30 drives the pressing plate 33 to limit and press the two ends of the carbon film plate under the action of mechanical transmission, and the rolling balls 36 further limit and press the outer wall edge of the carbon film plate through rotation.

[0058] The whole carbon film plate limiting and fixing method is convenient to operate, has high automation degree, improves work efficiency, can simultaneously clean the carbon film plate during the guiding and limiting work process, avoids the situation that the cleaning direction is too single, ensures the stability of the marking work through the multi-point limiting and fixing mode during the pressing and marking process, improves the marking accuracy, and effectively improves the product processing quality through the combination of static pressing and dynamic rolling.

[0059] The above merely describes preferred embodiments of the present application, and the protection scope of the present application is not limited thereto, and any modification or change made by those skilled in the art within the technical scope disclosed by the present application and the inventive concept thereof shall be covered within the protection scope of the present application.

[0060] The preferred embodiments of the application disclosed above are only used to help explain the application. The preferred embodiments do not describe all the details and limit the application to the specific embodiments. Obviously, many modifications and variations can be made in light of the above teachings. The above description is chosen and described in order to explain the principles of the application and its practical application, so that those skilled in the art can well understand and utilize the application. The application is limited only by the claims and their full scope and equivalents.

Claims

1. A limiting fixing device for preventing warping of a carbon film plate, characterized in that: include: A conveying line (1), the conveying line (1) being arranged on a frame and extending along a preset direction, for carrying and conveying a carbon film plate; A position limiting guide mechanism (2), the position limiting guide mechanism (2) includes a crossbeam (3) fixed on a frame, the crossbeam (3) is arranged in an H-shape, and a first cylinder (4) is connected to one side of an extended end of the crossbeam (3), a piston rod on the first cylinder (4) is connected to an X-axis slider (5), the X-axis slider (5) and the Y-axis sliders (6) at both ends of the crossbeam (3) are connected via a first swing rod (7), and the X-axis slider (5) and the Y-axis slider (6) are connected to a horizontal slide groove (8) and a vertical slide groove (9) respectively near the crossbeam (3); The bottoms of the X-axis slider (5) and the Y-axis slider (6) are connected to a first cleaning brush (10) and a second cleaning brush (11) respectively. One end of the Y-axis slider (6) is connected to a fixed plate (12) via a bracket. The bottom of the fixed plate (12) is movably connected to a guide wheel (13). A guide cavity connected to a carbon film plate is formed between the guide wheels (13). The bottom of the inner wall of the beam (3) is provided with a roller (14) arranged in the length direction of the horizontal slide groove (8) and the vertical slide groove (9).

2. A limiting and fixing device for preventing warping of a carbon film plate according to claim 1, characterized in that: Both ends of the X-axis slider (5) and the Y-axis slider (6) are integrally formed with protrusions corresponding to the horizontal slide groove (8) and the vertical slide groove (9), both ends of the first swing rod (7) are mounted on the X-axis slider (5) and the Y-axis slider (6) by means of a rotational connection, and the bottoms of the first cleaning brush (10) and the second cleaning brush (11) are both mounted with bristles by means of a sticky fixation, and as the first cylinder (4) is started, the first cleaning brush (10) and the second cleaning brush (11) respectively reciprocate and clean in the X-axis direction and the Y-axis direction on the horizontal plane of the carbon film plate.

3. A limiting and fixing device for preventing warping of a carbon film plate according to claim 2, characterized in that: The device further comprises a pressing and fixing mechanism (15), wherein the pressing and fixing mechanism (15) comprises an L-shaped bending plate (16) fixed on the frame, and a second cylinder (17) is fixedly mounted on both sides of the bottom end of the L-shaped bending plate (16), and a piston rod at the bottom end of the second cylinder (17) is connected to the first lifting plate (18), and the bottom end of the first lifting plate (18) is connected to the second lifting plate (19) via brackets on all sides.

4. A limiting and fixing device for preventing warping of a carbon film plate according to claim 3, characterized in that: A driving motor (20) is detachably mounted at the center of the bottom end of the first lifting plate (18). The output shaft of the driving motor (20) passes through the housing (21) and extends to the turntable (22). The outer wall edge of the turntable (22) is provided with a rotation groove connected to the housing (21), and the bottom of the turntable (22) is connected to the second lifting plate (19) through a bearing (23). Both ends of the turntable (22) are connected to the resistance block (25) through a rotating rod (24). The outer wall of the resistance block (25) is provided with a first slope (26), and the outside of the resistance block (25) is provided with a first slider (27) placed on the second lifting plate (19).

5. The limiting and fixing device for preventing warping of a carbon film plate according to claim 4, characterized in that: Both ends of the outer wall of the first slider (27) are provided with second slopes (28) adapted to the first slope (26), and both ends of the first slider (27) are connected to limit grooves along the length direction of the limit plate (29). The bottom of the limit plate (29) is mounted on the second lifting plate (19) by plugging and fixing. The first slider (27) and the second slider (30) are connected by a second swing rod (31). One end of the second slider (30) is connected to the first lifting plate (18) by a compression spring (32), and the other end passes through the second lifting plate (19) and extends to the pressure plate (33).

6. The limiting and fixing device for preventing warping of a carbon film plate according to claim 5, characterized in that: The second lifting plate (19) is provided with a movable opening connected to the second slider (30), and both ends of the second swing rod (31) are mounted on the first slider (27) and the second slider (30) by a rotational connection.

7. The limiting and fixing device for preventing warping of a carbon film plate according to claim 4, characterized in that: The extended end of the bottom end of the turntable (22) passes through the second lifting plate (19) and extends to the first column (34). The bottom of the first column (34) is movably connected to a ball (36) through a panel (35). A second column (37) located at the center of the second lifting plate (19) is provided between the balls (36). A marking block (38) is fixedly mounted on the second column (37). The marking block (38) is pressed against and fitted with the carbon film plate.

8. The limiting and fixing device for preventing warping of a carbon film plate according to claim 7, characterized in that: The bottom of the second lifting plate (19) is provided with an annular groove (39) connected to the first column (34), the side wall of the panel (35) is provided with an arc surface connected to the rolling ball (36), and the marking block (38) and the second column (37) are connected by a positioning hole at the connection point and are locked and fixed by a positioning pin.

9. A limiting and fixing method for preventing a carbon film plate from warping, applied to a limiting and fixing device for preventing a carbon film plate from warping according to any one of claims 1 to 7, characterized in that: The steps include: S1.

1. Place the carbon film plate on the conveyor line (1), and use the limit guide mechanism (2) to simultaneously clean the carbon film plate in the X-axis and Y-axis directions, and use the guide wheel (13) to achieve centering and clamping to prevent deviation during transportation; S1.2, when the conveyor line (1) transports the carbon film plate to the pressing and fixing mechanism (15), the second cylinder (17) is started and drives the marking block (38) to press and mark the carbon film plate; During the pressing process of step S1.3 and step S1.2, the driving motor (20) is started to drive the turntable (22) to rotate. Under the action of mechanical transmission, the second slider (30) drives the pressure plate (33) to limit and press the two ends of the carbon film plate. At the same time, the ball (36) further limits and presses the outer wall edge of the carbon film plate by rotating.

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