Coater deviation rectifying device for PVA (polyvinyl alcohol) film production

Abstract

The coating machine deviation rectifying device comprises deviation rectifying rollers, a lifting electric cylinder and a steering mechanism, the multiple deviation rectifying rollers are distributed side by side, the two ends of each deviation rectifying roller are rotationally connected with the output end of the lifting electric cylinder through bearing seats, and the steering mechanism is arranged below the lifting electric cylinder. And the deviation rectifying roller is in rolling contact with the bottom surface of the conveying film and is provided with a detachable rubber sleeve. In the using process of the device, it can be guaranteed that the deviation rectifying roller and a conveying film keep a good friction condition, the conveying film is prevented from slipping on the deviation rectifying roller, and the deviation rectifying roller keeps a good deviation rectifying effect.

Description

Technical Field

[0001] The utility model relates to the technical field of PVA film production equipment, in particular to a deviation-correcting device of a coating machine used in the production of PVA films. Background Art

[0002] The coating machine is one of the common equipment in the production process of PVA film. The feed end of the coating machine evenly spreads the raw pulp on the conveying film of the coating machine. The raw pulp is formed into a film during the transportation of the conveying film and is wound at the winding end. After the coating machine has been working for a long time, the position of the conveying film will gradually deviate, thereby affecting the normal production of PVA film. Generally, the coating machine will set a correction mechanism for the conveying film. However, with the increase of usage time, the conveying film ages. At the same time, the changes in working temperature and other conditions caused by changes in process parameters will cause the tension of the conveying film to weaken, causing the conveying film to slip when passing through the correction mechanism, which weakens the effect of the correction mechanism on the conveying film and is not conducive to correcting the conveying film. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a deviation correction device for a coating machine used in the production of PVA films.

[0004] The technical solution of the utility model is: a deflection correction device for a coating machine used for producing PVA film comprises a deflection correction roller, a lifting electric cylinder and a steering mechanism, a plurality of deflection correction rollers are distributed side by side and both ends of the deflection correction rollers are rotatably connected to the output end of the lifting electric cylinder through a bearing seat, a steering mechanism is arranged under the lifting electric cylinder, the deflection correction roller is in rolling contact with the bottom surface of the conveying film and is provided with a detachable rubber cylinder.

[0005] Furthermore, a positioning groove matching the rubber sleeve is provided on the deviation-correcting roller, and one end of the positioning groove is open and the other end is closed.

[0006] Furthermore, a countersunk hole is provided on the rubber cylinder, a screw is provided in the countersunk hole, and the screw passes through the countersunk hole and is screwed into the positioning groove.

[0007] Furthermore, the rubber tube is provided with anti-skid patterns, and the anti-skid patterns are distributed along the length direction and the circumference direction of the rubber tube.

[0008] Furthermore, the steering mechanism includes a base, a slider and a telescopic electric cylinder. The lifting electric cylinder is detachably connected to the slider. The base is provided with a guide rod that cooperates with the slider. The telescopic electric cylinder is fixedly connected to the base, and the telescopic end of the telescopic electric cylinder is fixedly connected to the slider.

[0009] Furthermore, a plurality of symmetrically distributed first protrusions are provided on the lifting electric cylinder, and a first bolt is provided on the first protrusion. The first bolt passes through the first protrusion and is screwed into the sliding block.

[0010] Furthermore, the guide rod is slidably connected to the slider via a linear bearing.

[0011] Furthermore, second bolts are provided at both ends of the guide rod, and the guide rod is fixedly connected to the base via the second bolts.

[0012] Compared with the prior art, the utility model has the advantages of: using a lifting electric cylinder to adjust the height of the deflection correction roller, so that the conveying film maintains a certain tension when passing through the deflection correction roller and is in close contact with the deflection correction roller, so that the deflection correction roller and the conveying film maintain good friction, preventing the conveying film from slipping on the deflection correction roller. Multiple deflection correction rollers are in contact with the conveying film, increasing the contact area between the conveying film and the deflection correction roller, and improving the deflection correction effect. The friction coefficient between the material of the rubber cylinder and the material of the conveying film is large, and the conveying film is not easy to slip on the surface of the rubber cylinder. The detachable rubber cylinder is easy to replace. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is an overall schematic diagram of the utility model;

[0015] Figure 2 This is a schematic diagram of the deviation correction roller of the utility model;

[0016] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0017] Figure 4 It is an assembly diagram of the lifting electric cylinder and the steering mechanism of the utility model.

[0018] Among them: 1. deviation correction roller; 2. bearing seat; 3. lifting electric cylinder; 4. steering mechanism; 11. rubber cylinder; 12. positioning groove; 111. countersunk hole; 112. anti-slip pattern; 21. positioning hole; 31. bump; 41. slider; 42. base; 43. telescopic electric cylinder; 411. linear bearing; 421. guide rod; 422. second bolt; 423. second bump. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0020] The specific implementation of the utility model will be described below in conjunction with the accompanying drawings:

[0021] like Figures 1 to 4 As shown, a deflection correction device for a coating machine used in the production of PVA film includes a deflection correction roller 1, a lifting electric cylinder 3 and a steering mechanism 4. Multiple deflection correction rollers 1 are arranged side by side, and both ends of the deflection correction roller 1 are rotatably connected to the output end of the lifting electric cylinder 3 through a bearing seat 2. A positioning hole 21 is provided on the bearing seat 2 to match the end of the deflection correction roller 1, and the deflection correction roller 1 is rotatably connected to the bearing seat 2. The bearing seat 2 can drive the deflection correction roller 1 to rotate relative to the lifting electric cylinder 3. The lifting electric cylinder 3 adjusts the height of the conveying roller so that the conveying film is close to the deflection correction roller 1 and maintains tension, ensuring good friction between the conveying film and the deflection correction roller 1 to prevent the conveying film from slipping.

[0022] A steering mechanism 4 is provided below the lifting electric cylinder 3. The steering mechanisms 4 at both ends of the deflection correction roller 1 cooperate with each other to adjust the position of the deflection correction roller 1, thereby adjusting the offset of the conveying film so that the position of the conveying film is maintained in the length direction. The deflection correction roller 1 is in rolling contact with the bottom surface of the conveying film and is provided with a detachable rubber sleeve 11. The friction coefficient between the rubber sleeve 11 and the conveying film is large, which can further prevent the conveying film from slipping on the deflection correction roller 1 and ensure the deflection correction effect of the deflection correction roller 1. The deflection correction roller 1 is provided with a positioning groove 12 that matches the rubber sleeve 11, and one end of the positioning groove 12 is open and the other end is closed. The rubber sleeve 11 slides into the positioning groove 12 along the open end of the positioning groove 12 and fits at the closed end of the positioning groove 12, thereby completing the preliminary positioning with the positioning groove 12. The rubber sleeve 11 is provided with a countersunk hole 111, and a screw is provided in the countersunk hole 111. The screw passes through the countersunk hole 111 and is screwed into the positioning groove 12. The relative position of the rubber sleeve 11 and the deflection correction roller 1 is fixed by the screw. The rubber cylinder 11 is provided with anti-skid patterns 112, which are distributed along the length and circumference of the rubber cylinder 11. The correction roller 1 applies external force to the width and length of the conveying film by using the anti-skid patterns 112, thereby adjusting the position of the conveying film and correcting the conveying film.

[0023] The steering mechanism 4 includes a base 42, a slider 41 and a telescopic electric cylinder 43. The base 42 is provided with a plurality of symmetrically distributed second protrusions 42331, and the second protrusions 42331 are provided with round holes for bolts to pass through. The base 42 is detachably connected to the workbench through the second protrusions 42331, which facilitates the installation and disassembly of the entire device. The slider 41 is provided with an opening for matching the lifting electric cylinder 3, and the lifting electric cylinder 3 can pass through the opening. In this way, the integration of the device is increased and the volume occupied by the device is reduced. The lifting electric cylinder 3 is provided with a plurality of symmetrically distributed first protrusions 31, and the first protrusions 31 are provided with a first bolt, which passes through the first protrusion 31 and is screwed into the slider 41. The lifting electric cylinder 3 is clamped on the slider 41 through the first protrusion 31, and is detachably connected to the slider 41 through the first bolt, which facilitates the later inspection or replacement of the components. The base 42 is provided with a guide rod 421 that matches the slider 41. The guide rod 421 is slidably connected to the slider 41 through a linear bearing 411. The linear bearing 411 is used to reduce the friction resistance between the guide rod 421 and the slider 41, thereby extending the service life of the components. Second bolts 422 are provided at both ends of the guide rod 421. The guide rod 421 is fixedly connected to the base 42 through the second bolts 422. The detachable guide rod 421 is easy to inspect and replace.

[0024] The telescopic electric cylinder 43 is fixedly connected to the base 42, and the telescopic end of the telescopic electric cylinder 43 is fixedly connected to the slider 41. The slider 41 moves along the guide rod 421 under the drive of the telescopic electric cylinder 43. The guide rod 421 and the end surface of the bearing seat 2 are at an acute angle. When the slider 41 moves along the guide rod 421, the bearing seat 2 applies axial and radial forces to the deviation correction roller 1, so that the axial position and radial position of the deviation correction roller 1 are changed, thereby adjusting the position of the conveying film to prevent the conveying film from deviating or wrinkling.

[0025] The working principle of the specific implementation of the utility model is as follows: the lifting electric cylinder 3 drives the deflection correction roller 1 to rise and lift the conveying film from the bottom, so that the conveying film and the deflection correction roller 1 are attached to the box and maintain a good friction condition, thereby initially preventing the conveying film from slipping. The rotating electric cylinders at both ends of the deflection correction roller 1 cooperate with each other to drive the slider 41 to move along the guide rod 421. Since the bearing seat 2 maintains a relative rotation relationship with the slider 41 through the lifting electric cylinder 3, when the slider 41 moves, the bearing seat 2 drives the two ends of the deflection correction roller 1 to rotate relative to the slider 41, and at the same time, the axial position of the deflection correction roller 1 is offset, thereby adjusting the position of the conveying film and restoring the conveying film from the offset position to the normal position.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an element centered thereon. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an element centered thereon. The terms "upper", "lower", "left", "right", "front", "rear" and similar expressions used herein are for illustrative purposes only.

[0027] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A deviation-correcting device for a coating machine used in the production of PVA films, characterized in that: It comprises a deflection correction roller (1), a lifting electric cylinder (3) and a steering mechanism (4); a plurality of the deflection correction rollers (1) are arranged side by side and both ends are rotatably connected to the output end of the lifting electric cylinder (3) through a bearing seat (2); the steering mechanism (4) is arranged below the lifting electric cylinder (3); the deflection correction roller (1) is in rolling contact with the bottom surface of the conveying film and is provided with a detachable rubber cylinder (11).

2. The deviation-correcting device for a coating machine for producing a PVA film according to claim 1, characterized in that: The deviation-correcting roller (1) is provided with a positioning groove (12) that matches the rubber cylinder (11); one end of the positioning groove (12) is open and the other end is closed.

3. The deviation-correcting device for a coating machine for producing a PVA film according to claim 2, characterized in that: The rubber cylinder (11) is provided with a countersunk hole (111), a screw is provided in the countersunk hole (111), and the screw passes through the countersunk hole (111) and is screwed into the positioning groove (12).

4. The deviation-correcting device for a coating machine for producing a PVA film according to claim 1, characterized in that: The rubber cylinder (11) is provided with anti-slip grooves (112), and the anti-slip grooves (112) are distributed along the length direction and the circumference direction of the rubber cylinder (11).

5. The deviation-correcting device for a coating machine for producing a PVA film according to claim 1, characterized in that: The steering mechanism (4) comprises a base (42), a slider (41) and a telescopic electric cylinder (43); the lifting electric cylinder (3) is detachably connected to the slider (41); the base (42) is provided with a guide rod (421) that cooperates with the slider (41); the telescopic electric cylinder (43) is fixedly connected to the base (42); and the telescopic end of the telescopic electric cylinder (43) is fixedly connected to the slider (41).

6. The deviation-correcting device for a coating machine for producing a PVA film according to claim 5, characterized in that: The lifting electric cylinder (3) is provided with a plurality of symmetrically distributed first protrusions (31), the first protrusions (31) are provided with first bolts, and the first bolts pass through the first protrusions (31) and are screwed into the slider (41).

7. The deviation-correcting device for a coating machine for producing a PVA film according to claim 5, characterized in that: The guide rod (421) is slidably connected to the slider (41) via a linear bearing (411).

8. The deviation-correcting device for a coating machine for producing a PVA film according to claim 5, characterized in that: Second bolts (422) are provided at both ends of the guide rod (421), and the guide rod (421) is fixedly connected to the base (42) via the second bolts (422).

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