Deviation rectifying structure of PET (Polyethylene Terephthalate) base film coating machine

Abstract

The utility model relates to a deviation rectifying structure of a PET (Polyethylene Terephthalate) base film coating machine. The deviation rectifying structure comprises a vertical plate, the angle deviation rectifying mechanism comprises an unwinding plate fixed to one side of the vertical plate, an unwinding frame arranged on one side of the unwinding plate in an angle-adjustable mode and an unwinding barrel rotationally installed in the unwinding frame, and the unwinding barrel is sleeved with a base film to be unwound; and the position deviation rectifying mechanism comprises a bottom plate, a deviation rectifying plate movably arranged at the top of the bottom plate, fixing plates fixed to the top of the deviation rectifying plate at intervals, an upper deviation rectifying roller and a lower deviation rectifying roller, wherein the upper deviation rectifying roller and the lower deviation rectifying roller are rotationally installed between the fixing plates and used for clamping a base film. According to the deviation rectifying structure of the PET base film coating machine, the angle deviation rectifying mechanism is arranged to rectify the angle of the base film, and the position deviation rectifying mechanism is arranged to rectify the position of the base film, so that the left and right positions of the base film are prevented from deviating when the base film is unwound, the conveying efficiency of the base film is improved, and the coating effect of the base film is also improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of deviation correction devices, and in particular relates to a deviation correction structure of a PET base film coating machine. Background Art

[0002] Coating machines are mainly used for surface coating production of films, paper, etc. This machine coats the rolled substrate with a layer of glue, paint or ink with specific functions, and then cuts it into sheets or rolls it up after drying.

[0003] In the utility model patent with application number "201920798355.8" and patent name "A safety protection device for a coating machine and a coating machine", when the coating machine is misaligned or the conveying roller has an abnormality and requires manual handling, the above-mentioned safety protection device solves the safety problems of the workers and prevents the workers from being rolled into the coating machine.

[0004] In the utility model patent disclosed above, when the coating machine is in operation, when the film or paper is being conveyed on the conveying roller, position deviation is likely to occur, causing the film to deviate from the conveying roller, which not only affects the conveying efficiency of the film, but also causes the film to overlap, affecting the subsequent coating effect. Utility Model Content

[0005] The utility model aims to provide a deviation correction structure for a PET base film coating machine in order to overcome the defects of the existing coating machine that the film easily deviates from the conveying roller, thereby affecting the conveying efficiency of the film, and the film overlaps, thereby affecting the subsequent coating effect.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a deviation correction structure of a PET base film coating machine, which comprises:

[0007] Stand board;

[0008] An angle correction mechanism, the angle correction mechanism comprises an unwinding plate fixed on one side of the vertical plate, an unwinding frame arranged at one side of the unwinding plate with an adjustable angle, and an unwinding drum rotatably installed in the unwinding frame, the unwinding drum is sleeved with a base film to be unwound, and the angle correction mechanism is used for angle correction of the base film;

[0009] A position correction mechanism, which includes a base plate, a correction plate movably arranged on the top of the base plate, a fixed plate fixed at intervals on the top of the correction plate, and an upper correction roller and a lower correction roller rotatably installed between the fixed plates and used to clamp the base film. The moving direction of the correction plate is perpendicular to the conveying direction of the base film, and the position correction mechanism is used for position correction of the base film.

[0010] Optimally, it also includes a tensioning mechanism and a pressing mechanism arranged between the angle correction mechanism and the position correction mechanism, wherein the tensioning mechanism is used to tension the base film unwound by the unwinding drum, and the pressing mechanism is used to press the tensioned base film.

[0011] Optimally, the angle correction mechanism also includes an angle plate fixed to the bottom of the unwinding plate and a correction cylinder connected to the unwinding frame, the cylinder body of the correction cylinder is pivotally connected to the angle plate, the guide rod of the correction cylinder is pivotally connected to the bottom of the unwinding frame, and the unwinding frame is rotatably connected to the unwinding plate.

[0012] Optimally, the position correction mechanism also includes an avoidance groove passing through the fixed plate, a lifting cylinder fixed on the top of the correction plate, a lifting plate connected to the lifting cylinder, and a mounting plate fixed on the top of the lifting plate, and the lower correction roller passes through the avoidance groove and is rotatably mounted on the mounting plate.

[0013] Optimally, the tensioning mechanism includes an auxiliary tensioning column rotatably mounted on one side of the vertical plate, a tensioning plate movably arranged on one side of the vertical plate, and a main tensioning column rotatably mounted on the tensioning plate. The moving direction of the tensioning plate is the same as the moving direction of the base film, and the base film unwound by the unwinding drum is wound around the auxiliary tensioning column and the main tensioning column.

[0014] Optimally, the pressing mechanism includes an extension plate fixed on one side of the vertical plate, a folding plate integrally connected to the top of the extension plate, a pressing roller rotatably installed between the vertical plate and the folding plate, a pressing plate that can be raised and lowered above the extension plate, and a contact protrusion fixed on the top of the pressing plate.

[0015] Optimally, the position correction mechanism further comprises a correction slide rail fixed on the top of the base plate and a correction slider slidably mounted on the correction slide rail, and the correction plate is fixed on the correction slider.

[0016] Optimally, the tensioning mechanism further comprises a tensioning slide rail fixed on one side of the vertical plate and a tensioning slider slidably mounted on the tensioning slide rail, and the tensioning plate is fixed on the tensioning slider.

[0017] Optimally, the diameters of the main tensioning column and the secondary tensioning column are the same.

[0018] Optimally, the contact protrusion is made of rubber.

[0019] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0020] The correction structure of the PET base film coating machine of the utility model corrects the angle of the base film by setting an angle correction mechanism, so as to prevent the base film from sticking together and wrinkling due to tilting when unwinding; and corrects the position of the base film by setting a position correction mechanism, so as to prevent the base film from being offset from the left and right positions when unwinding, thereby improving the conveying efficiency of the base film and also improving the coating effect of the base film;

[0021] Furthermore, the setting of the tensioning mechanism can be used to adjust the tightness of the basement membrane, thereby achieving dynamic adjustment of the basement membrane;

[0022] Furthermore, when the base film needs to be cut, the pressing mechanism is used to press the base film to prevent the base film from being rolled up due to cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of the utility model when unwinding the PET base film;

[0024] Figure 2 A schematic diagram of a structure of a part of the utility model;

[0025] Figure 3 It is a top view of the utility model;

[0026] Figure 4 It is a cross-sectional view of the utility model;

[0027] Figure 5 It is a structural schematic diagram of another part of the utility model;

[0028] Description of reference numerals:

[0029] 1. Vertical plate; 2. Unwinding plate; 3. Unwinding rack; 4. Unwinding drum; 5. Angle plate; 6. Correction cylinder; 7. Auxiliary tensioning column; 8. Tensioning slide rail; 9. Tensioning slider; 10. Tensioning plate; 11. Main tensioning column; 12. Extension plate; 13. Folding plate; 14. Pressing roller; 15. Pressing cylinder; 16. Pressing plate; 17. Contact protrusion; 18. Bottom plate; 19. Correction slide rail; 20. Correction slider; 21. Correction plate; 22. Fixed plate; 23. Upper correction roller; 24. Lower correction roller; 25. Avoidance groove; 26. Lifting cylinder; 27. Lifting plate; 28. Mounting plate. DETAILED DESCRIPTION

[0030] The utility model is further described below in conjunction with the embodiments shown in the accompanying drawings.

[0031] like Figure 1-5The figure shows a schematic diagram of the deflection correction structure of the PET base film coating machine of the utility model, which is usually used for deflection correction of the base film in the coating machine to prevent the base film from deflecting during unwinding and affecting the coating effect. The deflection correction structure consists of a vertical plate 1, an angle deflection correction mechanism, a tensioning mechanism, a pressing mechanism and a position deflection correction mechanism. The angle deflection correction mechanism is used to correct the angle of the base film to prevent the base film from sticking together and wrinkling due to tilting during unwinding.

[0032] The position correction mechanism is used to correct the position of the base film to prevent the base film from being offset to the left and right when unwinding. The tensioning mechanism and the pressing mechanism are arranged between the angle correction mechanism and the position correction mechanism. The tensioning mechanism is used to adjust the tightness of the base film after unwinding. When the base film needs to be cut, the pressing mechanism is used to press the base film to prevent the base film from being rewound in the original path due to cutting.

[0033] The angle correction mechanism includes an unwinding plate 2, an unwinding frame 3, an unwinding drum 4, an angle plate 5 and an angle correction cylinder 6. The unwinding plate 2 is fixed to one side of the top of the vertical plate 1 and is arranged perpendicular to the vertical plate 1. The unwinding frame 3 is in a "[" shape and is rotatably connected to the unwinding plate 2 (specifically, the opening side of the "["-shaped unwinding frame 3 is away from the unwinding plate 2 and is used to install the unwinding drum 4).

[0034] The unwinding drum 4 is rotatably mounted on the opening side of the unwinding frame 3, the angle plate 5 is fixed to the bottom of the unwinding plate 2, the cylinder body of the correction cylinder 6 is pivotally connected to the angle plate 5, and the guide rod of the correction cylinder 6 is pivotally connected to the bottom of the unwinding frame 3 (the correction cylinder 6 can be a commercially available lifting cylinder). The lifting movement of the correction cylinder 6 drives the unwinding frame 3 to adjust its angle on one side of the unwinding plate 2, thereby correcting the angle of the base film to prevent the base film from sticking together and wrinkling due to tilting during unwinding.

[0035] The tensioning mechanism is arranged on one side of the angle correction mechanism, and is used to tension the unwound base film to prevent the base film from becoming loose. The tensioning mechanism includes a secondary tensioning column 7, a tensioning slide rail 8, a tensioning slider 9, a tensioning plate 10, and a primary tensioning column 11. The secondary tensioning column 11 is rotatably mounted on one side of the vertical plate 1, and a plurality of the secondary tensioning columns 11 are arranged at intervals in the vertical direction.

[0036] The tensioning rail 8 is fixed to one side of the vertical plate 1 by screw fastening, the tensioning slider 9 is slidably mounted on the tensioning rail 8, and the tensioning plate 10 is fixed on the tensioning slider 9 and moves along the vertical plate 1 under the drive of the external moving cylinder. The moving direction of the tensioning plate 10 is the same as the conveying direction of the base film, so as to meet the tensioning work of the base film.

[0037] The main tensioning column 11 is rotatably mounted on the tensioning plate 10 and a plurality of them are arranged at intervals in the vertical direction. The number of the main tensioning column 11 is one less than the number of the auxiliary tensioning column 7. Figure 1 , 4As shown, the base film unwound by the unwinding drum 4 passes around the auxiliary tensioning column 7 and then is wound around the main tensioning column 11. If the base film is too loose, the moving cylinder drives the tensioning plate 10 to move toward the side away from the unwinding drum 4 to prevent the base film from being loose and affecting the coating effect; if the base film is too tight, the moving cylinder drives the tensioning plate 10 to move toward the side close to the unwinding drum 4 to prevent the base film from being too tight and breaking.

[0038] The main tensioning column 11 and the auxiliary tensioning column 7 have the same diameter. After the base film is wound around the main tensioning column 11 and the auxiliary tensioning column 7, the stability of the base film conveying process is guaranteed.

[0039] The pressing mechanism is arranged on one side of the tensioning mechanism. When the base film needs to be cut, the pressing mechanism is used to press the base film to prevent the base film from rolling up due to cutting. The pressing mechanism includes an extension plate 12, a folding plate 13, a pressing roller 14, a pressing cylinder 15, a pressing plate 16 and a contact protrusion 17. The extension plate 12 is fixed to one side of the bottom of the vertical plate 1 and is perpendicular to the vertical plate 1. The folding plate 13 is integrally connected to the side of the extension plate 12 away from the vertical plate 1, and the folding plate 13 and the extension plate 12 form an "L" shape.

[0040] The pressing roller 14 is rotatably installed between the vertical plate 1 and the folding plate 13, the pressing cylinder 15 is fixed on the top of the extension plate 12, and the pressing plate 16 is connected to the pressing cylinder 15, and the pressing plate 16 is driven to rise and fall by the pressing cylinder 15. The contact protrusion 17 is fixed on the top of the pressing plate 16, and the material of the contact protrusion 17 is rubber. When the base film needs to be cut, the pressing cylinder 15 first drives the pressing plate 16 to rise until the base film is pressed between the pressing roller 14 and the contact protrusion 17, and then the base film is cut (because the base film is in a taut state, if the base film is cut, the base film will be recovered part of the base film, causing the base film to become loose).

[0041] The rubber contact protrusion 17 can prevent the surface of the base film from being damaged when the base film is pressed.

[0042] The position correction mechanism is arranged on the side of the pressing mechanism away from the tensioning mechanism, and is used to correct the position of the base film to prevent the base film from shifting left and right when unwinding. Figure 5 As shown, the position correction mechanism includes a base plate 18, a correction rail 19, a correction slider 20, a correction plate 21, a fixed plate 22, an upper correction roller 23, a lower correction roller 24, an avoidance groove 25, a lifting cylinder 26, a lifting plate 27 and a mounting plate 28.

[0043] The deflection correction rail 19 is fixed to the top of the bottom plate 18 by screw fastening, the deflection correction slider 20 is slidably installed on the deflection correction rail 19, and the deflection correction plate 21 is fixed on the deflection correction slider 20. The deflection correction plate 21 is driven by the external moving cylinder to move along the deflection correction rail 19, thereby completing the position correction of the base film. The moving direction of the deflection correction plate 21 is perpendicular to the conveying direction of the base film.

[0044] There are two fixed plates 22, which are fixed at intervals on the top of the deflection correcting plate 21, and the upper deflection correcting roller 23 is rotatably installed between the two fixed plates 22. The avoidance groove 25 runs through the fixed plates 22 to ensure that the lower deflection correcting roller 24 has space to rise and fall in the fixed plates 22, so as to complete the position deflection correction of the base film together with the upper deflection correcting roller 23.

[0045] The lifting cylinder 26 is fixed on the deflection correction plate 21 and is located on the opposite side of the fixed plate 22. The lifting plate 27 is connected to the lifting cylinder 26. The mounting plate 28 is fixed on the top of the lifting plate 27. The two ends of the lower deflection correction roller 24 pass through the avoidance groove 25 and are rotatably connected to the mounting plate 28. If the base film is offset from the left to the right, the lifting cylinder 26 drives the lower deflection correction roller 24 to rise until the base film is sandwiched between the upper deflection correction roller 23 and the lower deflection correction roller 24, and then the base film is moved to the center position by moving the deflection correction plate 21 (the two ends of the upper deflection correction roller 23 are connected to the fixed plate 22 through bearings, and the two ends of the lower deflection correction roller 24 are also connected to the mounting plate 28 through bearings, so the upper deflection correction roller 23 and the lower deflection correction roller 24 are passively rotated, not actively rotated).

[0046] The correction structure of the PET base film coating machine of the utility model corrects the angle of the base film by setting an angle correction mechanism, corrects the position of the base film by setting a position correction structure, and the tensioning mechanism can adjust the tightness of the base film. When the base film needs to be cut, the pressing mechanism is used to press the base film to prevent the base film from being rolled up along the original path due to cutting.

[0047] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A deviation correction structure for a PET base film coating machine, characterized in that it include: Vertical plate (1); An angle correction mechanism, the angle correction mechanism comprising an unwinding plate (2) fixed to one side of the vertical plate (1), an unwinding frame (3) arranged at one side of the unwinding plate (2) in an angle-adjustable manner, and an unwinding drum (4) rotatably mounted in the unwinding frame (3), the unwinding drum (4) being sleeved with a base film to be unwound, the angle correction mechanism being used for angle correction of the base film; A position correction mechanism, the position correction mechanism comprising a base plate (18), a correction plate (21) movably arranged on the top of the base plate (18), a fixed plate (22) fixed at intervals on the top of the correction plate (21), and an upper correction roller (23) and a lower correction roller (24) rotatably installed between the fixed plates (22) and used for clamping the base film, the moving direction of the correction plate (21) is perpendicular to the conveying direction of the base film, and the position correction mechanism is used for position correction of the base film.

2. The deviation-correcting structure of a PET base film coating machine according to claim 1, characterized in that: It also comprises a tensioning mechanism and a pressing mechanism arranged between the angle correction mechanism and the position correction mechanism, wherein the tensioning mechanism is used for tensioning the base film unwound by the unwinding drum (4), and the pressing mechanism is used for pressing the tensioned base film.

3. The deviation correction structure of a PET base film coating machine according to claim 1, characterized in that: The angle correction mechanism also includes an angle plate (5) fixed to the bottom of the unwinding plate (2) and a correction cylinder (6) connected to the unwinding frame (3); the cylinder body of the correction cylinder (6) is pivotally connected to the angle plate (5); the guide rod of the correction cylinder (6) is pivotally connected to the bottom of the unwinding frame (3); and the unwinding frame (3) is rotatably connected to the unwinding plate (2).

4. The deviation-correcting structure of a PET base film coating machine according to claim 1, characterized in that: The position correction mechanism also includes an avoidance groove (25) passing through the fixed plate (22), a lifting cylinder (26) fixed on the top of the correction plate (21), a lifting plate (27) connected to the lifting cylinder (26), and a mounting plate (28) fixed on the top of the lifting plate (27); the lower correction roller (24) passes through the avoidance groove (25) and is rotatably mounted on the mounting plate (28).

5. The deviation-correcting structure of a PET base film coating machine according to claim 2, characterized in that: The tensioning mechanism comprises an auxiliary tensioning column (7) rotatably mounted on one side of the vertical plate (1), a tensioning plate (10) movably arranged on one side of the vertical plate (1), and a main tensioning column (11) rotatably mounted on the tensioning plate (10), wherein the moving direction of the tensioning plate (10) is the same as the moving direction of the base film, and the base film unwound by the unwinding drum (4) is wound around the auxiliary tensioning column (7) and the main tensioning column (11).

6. The deviation-correcting structure of a PET base film coating machine according to claim 2, characterized in that: The pressing mechanism comprises an extension plate (12) fixed to one side of the vertical plate (1), a folding plate (13) integrally connected to the top of the extension plate (12), a pressing roller (14) rotatably mounted between the vertical plate (1) and the folding plate (13), a pressing plate (16) liftably arranged above the extension plate (12), and a contact protrusion (17) fixed to the top of the pressing plate (16).

7. The deviation-correcting structure of a PET base film coating machine according to claim 1, characterized in that: The position correction mechanism also includes a correction slide rail (19) fixed on the top of the base plate (18) and a correction slider (20) slidably mounted on the correction slide rail (19), and the correction plate (21) is fixed on the correction slider (20).

8. The deviation-correcting structure of a PET base film coating machine according to claim 5, characterized in that: The tensioning mechanism also includes a tensioning slide rail (8) fixed on one side of the vertical plate (1) and a tensioning slider (9) slidably mounted on the tensioning slide rail (8), and the tensioning plate (10) is fixed on the tensioning slider (9).

9. The deviation-correcting structure of a PET base film coating machine according to claim 5, characterized in that: The main tensioning column (11) and the auxiliary tensioning column (7) have the same diameter.

10. The deviation-correcting structure of a PET base film coating machine according to claim 6, characterized in that: The material of the contact protrusion (17) is rubber.

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