A deviation correction device for the production of polypropylene capacitor film
By introducing a rotating structure and spreading structure into the correction device, and the film edges are stretched by alternate movement of arc-shaped blocks, the problem of easy folding and crease in the correction process is solved, and the quality and flatness of the product are improved.
Patent Information
- Application Number
- CN202411133323.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-19
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2044-08-19
AI Technical Summary
During the correction process of existing polypropylene capacitor film correction devices, the film moves slowly due to the setting of the friction pad, which is prone to folding and crease, affecting product quality.
A bias correction device including a rotating structure and a spreading structure is designed. Through the alternating reciprocating movement of four groups of arc blocks, the folding part of the edge of the film is opened to reduce the pressure on the film and ensure that the edge of the film is in an active state during the transmission process. , avoid the occurrence of creases.
It effectively reduces the effect of the spreading structure on the crease of the film, ensures the quality of the film, and ensures the smoothness and defect-free edges at the edges during the transmission process.
Smart Images
Figure CN118637410B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of deviation correction in film production, in particular to a deviation correction device for the production of polypropylene capacitor film. Background Art
[0002] Polypropylene capacitors use metal foil as electrodes, which are overlapped with polypropylene film at both ends and then rolled into a cylindrical structure. During the transmission process of polypropylene capacitor film, the film will inevitably be offset, resulting in uneven edges of the film after rolling.
[0003] In this regard, China's patent application number: CN202021129891.8 discloses a film deviation correction mechanism, including a base and a pedestal, the base is provided with a main support and at least one auxiliary support, the base is fixed with a driving mechanism for driving the main support to make linear reciprocating movements, the main support includes a fixed block rotatably connected to the driving mechanism, a support block slidably connected to the fixed block, and the support block is fixedly connected to the pedestal; the auxiliary support includes a universal bearing seat fixedly connected to the base, a support shaft slidably connected to the universal bearing seat, and both ends of the support shaft are fixedly connected to the pedestal; baffles for moving the film are fixedly connected to the two opposite sides of the top of the pedestal. The device has a simple structure and is easy to use.
[0004] The device can move the film to correct the deviation through the setting of the base and the susceptor, in conjunction with the roller, but in actual use, a group of rollers for guiding and adjusting the film conveying angle will be installed at the output end of the device. When the device corrects the film, it is necessary to adjust the position of the film on the roller. For a larger correction, the device will drive the film to quickly return to the right position. In order to ensure the correction effect of the film, the roller surface is mostly provided with friction pads. The setting of the friction pads makes the movement of the film slower, making the positions of the two ends of the film tortuous. When continuing to be conveyed, folding will occur. During the rapid conveying process, the film will not have time to recover and will come into contact with the roller. The folded part of the film will be pressed by the roller, making the crease significantly deeper, causing defects on the surface of the product, affecting the quality of the product.
[0005] Therefore, in order to solve the above problems, a deviation correction device for producing polypropylene capacitor film is proposed. Summary of the invention
[0006] The purpose of the present invention is to provide a correction device for the production of polypropylene capacitor film, so as to solve the problem that the existing device proposed in the above background technology can move the film through a base and a susceptor in cooperation with a roller shaft to correct the deviation of the film, but in actual use, a group of rollers for guiding and adjusting the film conveying angle will be installed at the output end of the device, and when the device corrects the deviation of the film, it is necessary to adjust the position of the film on the roller shaft, and for a larger correction, the device will drive the film to return to the right position quickly, and in order to ensure the correction effect of the film, the roller shaft is mostly provided with a friction pad on the surface, and the setting of the friction pad makes the film move slower, so that the position of the two ends of the film is tortuous, and when it continues to be conveyed, folding will occur. In the process of rapid conveying, the film will not have time to recover and will contact the roller. The folded part of the film will be pressed by the roller, so that the crease becomes significantly deeper, and defects appear on the surface of the product, affecting the quality of the product.
[0007] To achieve the above object, the present invention provides the following technical solution: a deviation correction device for producing polypropylene capacitor film, comprising: a bracket, a deviation correction instrument is installed on the bracket, and a film body is laid on the top surface of the deviation correction instrument;
[0008] The bracket is provided with a rotating structure, the rotating structure comprising a mounting block, the mounting block is fixedly mounted on the top surface of the bracket, a motor is fixedly mounted on the outer wall of the mounting block, the output end of the motor is fixedly connected to a limiting block, a sleeve is movably mounted on the inner wall of the mounting block through a thread, a fixing cylinder is movably mounted on the sleeve through a thread, a groove is provided on the surface of the fixing cylinder, and a screw is movably mounted on the limiting block through a thread;
[0009] A spreading structure is installed on the rotating structure, and the spreading structure includes a rotating cylinder, which is installed on the inner side of the mounting block, a socket is provided at one end of the rotating cylinder, a screw hole is provided on the surface of the rotating cylinder, a support rod is fixedly connected to one end of the rotating cylinder, a spring is fixedly connected to the surface of the support rod, an arc block is sleeved on the outer side of the support rod, a slot is provided on the side wall of the arc block, a guide groove is provided on the surface of the arc block, a guide block is integrally formed on the surface of the arc block, and a reinforcing ball is integrally formed on the end of the arc block.
[0010] Preferably, the rotating structure and the spreading structure are respectively provided with two groups, and the two groups of the rotating structure and the spreading structure are symmetrically installed on the left and right sides of the top surface of the bracket. The rotating structure and the spreading structure are both located on the front side of the correction instrument, and the film body is in contact with the spreading structure.
[0011] Preferably, the output end of the motor passes through the sleeve and the fixed cylinder from the middle, and the outer diameters of the sleeve and the fixed cylinder are equal to the diameter of the rotating cylinder.
[0012] Preferably, the cross-sections of the limit block and the socket are both rectangular structures, the limit block is fixed inside the socket by screws, and the inner wall of the groove is in a "√" shape.
[0013] Preferably, the ends of the two groups of rotating cylinders are movably connected via threads, four groups of support rods are provided on one group of rotating cylinders, and the ends of the springs are fixedly connected to the slots.
[0014] Preferably, four groups of arc blocks are installed on one group of the rotating cylinders, and the four groups of arc blocks are plugged into each other through the cooperation of guide blocks and guide grooves, and the four groups of arc blocks form a cylindrical shape.
[0015] Preferably, the end of the reinforcing ball abuts against the side wall of the fixing tube, and the reinforcing ball cooperates with the groove.
[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the deflection correction device of the present invention installs a rotating structure on the front side of the deflection correction instrument, which cooperates with the spreading structure. During the transmission of the film body after deflection correction, the folded part at the edge of the film body can be stretched out through the alternating reciprocating movement of four groups of arc blocks, so that the folded part of the film body is in an active state relative to the whole film body when it contacts with the spreading structure, which can reduce the effect of the spreading structure on the film crease, thereby ensuring the quality of the film body.
[0017] A rotating structure and a spreading structure are provided. Starting the motor can drive the limit block to rotate. The limit block is stuck in the socket on the rotating cylinder and fixed by screws. Therefore, when the motor is started, it can drive the rotating cylinder to rotate. The rotation of the rotating cylinder can drive the film body to transmit and adjust the transmission angle of the film body. When the rotating cylinder rotates, four groups of arc blocks can be driven to rotate by four groups of support rods. The four groups of arc blocks can be assembled into a cylinder with the same diameter as the rotating cylinder. Since the film body is transmitted at a ninety-degree angle in the position of the rotating cylinder, the film body will contact one-fourth of the surface of the rotating cylinder, and the arc block will contact the edge of the film body and transmit it to the edge of the film body, and the arc block will be away from the rotating cylinder under the action of the spring, so it is located at the arc block The reinforcing ball at the end will contact the side wall of the fixed cylinder. As the rotating cylinder rotates, the rotating cylinder drives the reinforcing ball to slide on the side wall of the fixed cylinder through the arc block. When the reinforcing ball is aligned with the groove, the reinforcing ball will be inserted into the inside of the groove under the action of the spring, and gradually go deeper along the inner wall of the groove, so that the arc block located at the rear side and in contact with the film body moves. The moving arc block will drive the film body fitted with it to move horizontally relative to the film body on the rotating cylinder, so that the folded part at the edge of the film body will unfold. When the arc block is separated from the film body, the guide block moves to the end of the groove, that is, slides out along the inner wall of the groove, so that the arc block gradually resets and is ready for the next rotation to fit the film body and move;
[0018] When producing a wider film body, the mounting block is removed from the bracket, and then the screws are unscrewed to release the fixation of the limit block in the rotating cylinder, and the spreading structure can be removed from the rotating structure. The sleeve can be rotated to unscrew the sleeve and the fixed cylinder from the mounting block. According to needs, the sleeve is unscrewed from the fixed cylinder, and the two sets of rotating cylinders are unscrewed, and then the unscrewed sleeve is screwed between the two sets of rotating cylinders, and the two sets of rotating cylinders are tightened again, and then the fixed cylinder is screwed onto the mounting block again, and the limit block is inserted into the rotating cylinder, and then fixed with screws. The rotating structure and the spreading structure can be reassembled, and the length of the rotating cylinder can be increased by moving the sleeves on both sides to the rotating cylinder, and the distance between the arc blocks on both sides can be increased, so that the two sets of arc blocks can be respectively located at the edge positions on both sides of the film body, which is convenient for guiding the edge of the film body through the arc blocks, and the scope of application of the device can be expanded. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic front view of the structure of the present invention;
[0020] Figure 2 It is a schematic front view of the structure of the rotating structure of the present invention;
[0021] Figure 3 This is a schematic diagram of the separation structure of two groups of spreading structures of the present invention;
[0022] Figure 4 It is a schematic diagram of the structural explosion of the rotating structure of the present invention;
[0023] Figure 5 It is a schematic diagram of the structure explosion of the sleeve and the fixing cylinder of the present invention;
[0024] Figure 6 It is a schematic diagram of the explosion structure of the rotating cylinder and the arc-shaped block of the present invention;
[0025] Figure 7 It is a schematic side view of the structure of the slot, guide groove and guide block of the present invention;
[0026] Figure 8 It is a schematic side view of the structure of the groove of the present invention;
[0027] Fig. 9 It is a schematic front cross-sectional view of the rotating structure and the spreading structure of the present invention;
[0028] Fig.10 It is a schematic side cross-sectional view of the structure of the arc block and the film body in the bonding state of the present invention.
[0029] In the figure: 1. bracket; 11. correction instrument; 12. film body; 2. rotating structure; 21. mounting block; 22. motor; 23. limit block; 24. sleeve; 25. fixed cylinder; 26. groove; 27. screw; 3. spreading structure; 31. rotating cylinder; 32. socket; 33. screw hole; 34. support rod; 35. spring; 36. arc block; 37. slot; 38. guide groove; 39. guide block; 310. reinforcing ball. DETAILED DESCRIPTION
[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.
[0031] See also Figure 1-10 An embodiment provided by the present invention:
[0032] The bracket 1, the deviation correction instrument 11 and the motor 22 used in the present application are products that can be directly purchased on the market. Their principles and connection methods are existing technologies well known to those skilled in the art, so they will not be described in detail here.
[0033] A deviation correction device for producing polypropylene capacitor film, comprising: a bracket 1, a deviation correction instrument 11 is installed on the bracket 1, and a film body 12 is laid on the top surface of the deviation correction instrument 11;
[0034] A rotating structure 2 is installed on the bracket 1. The rotating structure 2 includes a mounting block 21. The mounting block 21 is fixedly mounted on the top surface of the bracket 1. A motor 22 is fixedly mounted on the outer wall of the mounting block 21. The output end of the motor 22 is fixedly connected to a limiting block 23. A sleeve 24 is movably mounted on the inner wall of the mounting block 21 through a thread. A fixing cylinder 25 is movably mounted on the sleeve 24 through a thread. A groove 26 is provided on the surface of the fixing cylinder 25. A screw 27 is movably mounted on the limiting block 23 through a thread.
[0035] The spreading structure 3 is installed on the rotating structure 2, and the spreading structure 3 includes a rotating cylinder 31, which is installed on the inner side of the mounting block 21, a plug hole 32 is provided at one end of the rotating cylinder 31, a screw hole 33 is provided on the surface of the rotating cylinder 31, a support rod 34 is fixedly connected to one end of the rotating cylinder 31, a spring 35 is fixedly connected to the surface of the support rod 34, an arc block 36 is sleeved on the outer side of the support rod 34, a slot 37 is provided on the side wall of the arc block 36, a guide groove 38 is provided on the surface of the arc block 36, and a guide block 39 is integrally formed on the surface of the arc block 36 A reinforcing ball 310 is integrally formed at the end of the arc block 36. By installing a rotating structure 2 on the front side of the correcting instrument 11 and cooperating with the spreading structure 3, the folded part at the edge of the film body 12 can be stretched out through the alternating reciprocating movement of the four groups of arc blocks 36 during the transmission of the corrected film body 12, so that the folded part of the film body 12 is in an active state relative to the whole film body 12 when it contacts the spreading structure 3, which can reduce the effect of the spreading structure 3 on the film crease, thereby ensuring the quality of the film body 12.
[0036] Furthermore, two groups of rotating structures 2 and spreading structures 3 are respectively provided, and the two groups of rotating structures 2 and spreading structures 3 are symmetrically installed on the left and right sides of the top surface of the bracket 1. The rotating structure 2 and the spreading structure 3 are both located on the front side of the correction instrument 11, and the film body 12 is in contact with the spreading structure 3. The rotating structure 2 can drive the spreading structure 3 to rotate, and the two groups of spreading structures 3 cooperate with each other to transport the film body 12 and adjust the transport angle of the film body 12.
[0037] Furthermore, the output end of the motor 22 passes through the sleeve 24 and the fixed cylinder 25 from the middle. The outer diameters of the sleeve 24 and the fixed cylinder 25 are equal to the diameter of the rotating cylinder 31. The sleeve 24 can be installed on the rotating cylinder 31 to increase the length of the rotating cylinder 31. The arc block 36 can be moved to the edge of the film body 12 to facilitate the unfolding of the folded part of the film body 12. After the installation of the sleeve 24, the surface is flush with the rotating cylinder 31, which can ensure the transmission effect of the film body 12 and avoid the annular drop between the surfaces of the rotating cylinder 31 and the sleeve 24, which causes the film body 12 to wrinkle on the rotating cylinder 31, resulting in continuous marks on the film body 12, affecting the quality of the film body 12.
[0038] Furthermore, the cross-sections of the limit block 23 and the socket 32 are both rectangular structures. The limit block 23 is fixedly installed inside the socket 32 by screws 27. The inner wall of the groove 26 is in a "√" shape. The limit block 23 can be stuck in the socket 32, so that the limit block 23 will not shake in the socket 32, which is convenient for the motor 22 to drive the rotating cylinder 31 to rotate through the limit block 23. When the reinforcing ball 310 slides on the side wall of the fixed cylinder 25, when the reinforcing ball 310 is aligned with the groove 26, the reinforcing ball 310 will penetrate into the groove 26, so that the arc block 36 can move relative to the film body 12, and the folded part of the edge of the film body 12 can be unfolded.
[0039] Furthermore, the ends of the two groups of rotating cylinders 31 are movably connected by threads, and four groups of support rods 34 are provided on one group of rotating cylinders 31. The ends of the springs 35 are fixedly connected to the slots 37. The two groups of rotating cylinders 31 are detachable, and the support rods 34 can be connected between the two groups of rotating cylinders 31 to increase the length of the rotating cylinders 31. The springs 35 provide power for the reinforcing balls 310 to be inserted into the grooves 26 so that the arc blocks 36 can be moved. The support rods 34 provide support for the installation of the arc blocks 36, so that the arc blocks 36 can slide horizontally on the support rods 34 without rotating, thereby ensuring the arc blocks 36 have a conveying and unfolding effect on the film body 12.
[0040] Furthermore, four groups of arc blocks 36 are installed on a group of rotating cylinders 31. The four groups of arc blocks 36 are plugged into each other through the cooperation of guide blocks 39 and guide grooves 38. The four groups of arc blocks 36 form a cylindrical shape. The outer wall of the arc block 36 is flush with the outer wall of the rotating cylinder 31. The four groups of arc blocks 36 can alternately transmit the edge of the film body 12 during the rotation of the rotating cylinder 31, so that the edge of the film body 12 is always in contact with the movable arc blocks 36, which can ensure the unfolding effect of the folded edge of the film body 12 and avoid the generation of creases.
[0041] Furthermore, the end of the reinforcing ball 310 abuts against the side wall of the fixed cylinder 25, and the reinforcing ball 310 cooperates with the groove 26. When the rotating cylinder 31 rotates, the reinforcing ball 310 can be driven to slide on the side wall of the fixed cylinder 25. When the reinforcing ball 310 is aligned with the groove 26, the reinforcing ball 310 can move into the groove 26, so that the arc block 36 can be movable, which is convenient for unfolding the folded part of the film body 12, and when the arc block 36 is separated from the film body 12, the reinforcing ball 310 can slide out of the groove 26 and fit the side wall of the fixed cylinder 25, so that the arc block 36 can be reset on the support rod 34. The arc block 36 can be in an active and reset movement during the rotation of the rotating cylinder 31, so that the edge of the film body 12 always has an outward force relative to the middle, which can ensure the continuous unfolding effect on the edge of the film body 12 and improve the unfolding effect of the film body 12.
[0042] Working principle: When in use, the film body 12 is conveyed from the back to the front on the top surface of the bracket 1, and the correction device 11 installed on the top surface of the bracket 1 can correct the film body 12 in the middle, so that the two ends of the film body 12 are aligned front and back;
[0043] The rotating structure 2 is installed on the front side of the deviation correction instrument 11. When the film body 12 is being conveyed, it will contact the spreading structure 3 on the rotating structure 2. Starting the motor 22 can drive the limit block 23 to rotate. The limit block 23 is stuck in the socket 32 on the rotating cylinder 31 and is fixed by the screw 27. Therefore, when the motor 22 is started, it can drive the rotating cylinder 31 to rotate. The rotation of the rotating cylinder 31 can drive the film body 12 to transmit and adjust the conveying angle of the film body 12.
[0044] When the rotating cylinder 31 rotates, the four groups of arc blocks 36 can be driven to rotate by the four groups of support rods 34. The four groups of arc blocks 36 can be assembled into a cylinder with the same diameter as the rotating cylinder 31. Since the film body 12 is transferred at a 90-degree angle at the position of the rotating cylinder 31, the film body 12 will contact a quarter of the surface of the rotating cylinder 31, and the arc blocks 36 will contact and transfer the edge of the film body 12. In addition, the arc blocks 36 are away from the rotating cylinder 31 under the action of the spring 35, so the reinforcing ball 310 at the end of the arc block 36 will contact the side wall of the fixed cylinder 25. As the rotating cylinder 31 rotates, the rotating cylinder 31 drives the reinforcing ball 310 to slide on the side wall of the fixed cylinder 25 through the arc block 36. When the reinforcing ball 310 is aligned with the groove 26, the reinforcing ball 310 is inserted into the groove 26 under the action of the spring 35, and gradually penetrates along the inner wall of the groove 26, so that the arc block 36 located at the rear side and in contact with the film body 12 moves. The moving arc block 36 drives the film body 12 attached thereto to move horizontally relative to the film body 12 on the rotating cylinder 31, so that the folded part at the edge of the film body 12 is unfolded;
[0045] When the arc block 36 is separated from the film body 12, the guide block 39 moves to the end of the groove 26, that is, slides out along the inner wall of the groove 26, so that the arc block 36 is gradually reset and is ready for the next rotation to fit the film body 12 and move;
[0046] When producing a wider film body 12, the mounting block 21 is removed from the bracket 1, and then the screw 27 is unscrewed to release the fixation of the limit block 23 in the rotating cylinder 31, and the spreading structure 3 can be removed from the rotating structure 2. The sleeve 24 is rotated, and the sleeve 24 and the fixed cylinder 25 can be unscrewed from the mounting block 21. According to the needs, the sleeve 24 is unscrewed from the fixed cylinder 25, and the two sets of rotating cylinders 31 are unscrewed, and then the unscrewed sleeve 24 is screwed between the two sets of rotating cylinders 31, and the two sets of rotating cylinders 31 are re-tightened, and then the fixed cylinders 31 are fixed. The fixed cylinder 25 is screwed onto the mounting block 21 again, and the limit block 23 is inserted into the rotating cylinder 31 and then fixed with the screws 27. The rotating structure 2 and the spreading structure 3 can be reassembled. By moving the sleeves 24 on both sides onto the rotating cylinder 31, the length of the rotating cylinder 31 can be increased, and the distance between the arc blocks 36 on both sides can be increased, so that the two groups of arc blocks 36 can be respectively located at the edge positions on both sides of the film body 12, which is convenient for guiding the edge of the film body 12 through the arc blocks 36, thereby expanding the scope of application of the device.
[0047] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any ordinary technician in the industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the technical solution of the present invention.
Claims
1. A deviation correction device for the production of polypropylene capacitor film, comprising: A support (1), wherein a deviation correction device (11) is mounted on the support (1), and a film body (12) is laid on the top surface of the deviation correction device (11); Features: The support (1) is provided with a rotating structure (2), the rotating structure (2) comprising a mounting block (21), the mounting block (21) being fixedly mounted on the top surface of the support (1), a motor (22) being fixedly mounted on the outer wall of the mounting block (21), an output end of the motor (22) being fixedly connected to a limiting block (23), a sleeve (24) being movably mounted on the inner wall of the mounting block (21) via a thread, a fixing cylinder (25) being movably mounted on the sleeve (24) via a thread, a groove (26) being provided on the surface of the fixing cylinder (25), a screw (27) being movably mounted on the limiting block (23) via a thread, the cross-sections of the limiting block (23) and the plug hole (32) both being of rectangular structure, the limiting block (23) being fixedly mounted inside the plug hole (32) via the screw (27), and the inner wall of the groove (26) being of a "√"-shaped structure; The rotating structure (2) is mounted with a spreading structure (3), the spreading structure (3) comprising a rotating cylinder (31), the rotating cylinder (31) being mounted on the inner side of the mounting block (21), one end of the rotating cylinder (31) being provided with a plug hole (32), the surface of the rotating cylinder (31) being provided with a screw hole (33), one end of the rotating cylinder (31) being fixedly connected with a support rod (34), the surface of the support rod (34) being fixedly connected with a spring (35), the outer side of the support rod (34) being sleeved with an arc block (36), and the side wall of the arc block (36) being provided with a slot (37), the end of the spring (35) is fixedly connected to the slot (37), a guide groove (38) is provided on the surface of the arc block (36), a guide block (39) is integrally formed on the surface of the arc block (36), the guide groove (38) and the guide block (39) cooperate with each other, a reinforcing ball (310) is integrally formed on the end of the arc block (36), the end of the reinforcing ball (310) abuts against the side wall of the fixing tube (25), the reinforcing ball (310) cooperates with the groove (26), and the reinforcing ball (310) can gradually penetrate deeper along the inner wall of the groove (26).
2. The deviation-correcting device for producing polypropylene capacitor film according to claim 1, characterized in that: The rotating structure (2) and the spreading structure (3) are respectively provided in two groups, and the two groups of the rotating structure (2) and the spreading structure (3) are symmetrically installed on the left and right sides of the top surface of the bracket (1), and the rotating structure (2) and the spreading structure (3) are both located in front of the deviation correction instrument (11), and the film body (12) is in contact with the spreading structure (3).
3. The deviation-correcting device for producing polypropylene capacitor film according to claim 1, characterized in that: The output end of the motor (22) passes through the sleeve (24) and the fixed cylinder (25) from the middle, and the outer diameters of the sleeve (24) and the fixed cylinder (25) are equal to the diameter of the rotating cylinder (31).
4. The deviation-correcting device for producing polypropylene capacitor film according to claim 2, characterized in that: The ends of the two groups of rotating cylinders (31) are movably connected via threads, and one group of rotating cylinders (31) is provided with four groups of support rods (34).
5. The deviation-correcting device for producing polypropylene capacitor film according to claim 2, characterized in that: Four groups of arc blocks (36) are installed on one group of the rotating cylinders (31). The four groups of arc blocks (36) are plugged into each other through the cooperation of guide blocks (39) and guide grooves (38). The four groups of arc blocks (36) form a cylindrical shape.