CN113183612A

CN113183612A - Chromatography process and production equipment of oversized high-flatness PVC decorative film

Info

Publication number: CN113183612A
Application number: CN202110372327.1A
Authority: CN
Inventors: 张海林
Original assignee: Huangshan Yunjia Decoration Materials Co ltd
Current assignee: Huangshan Yunjia Decoration Materials Co ltd
Priority date: 2021-04-07
Filing date: 2021-04-07
Publication date: 2021-07-30
Anticipated expiration: 2041-04-07
Also published as: CN115570877A; CN113183612B

Abstract

The invention discloses a chromatography device of a PVC decorative film with super-large size and high flatness, which comprises a bearing box, supporting legs, rollers, a control cabinet, a conveying mechanism, a grinding mechanism, a PVC film and a drying mechanism, wherein a chromatography process comprises pigment grinding, master batch coating, pressing height adjustment, film coloring and pigment drying, the invention improves an adjusting structure in the existing chromatography device, a turntable rotates by adjusting a deflector rod, a fluted disc is simultaneously extruded by a first clamping block to rotate, a threaded column rotates by the rotation of the fluted disc through the transmission of a rotating shaft, the threaded column drives a threaded sleeve to move up and down to complete the adjustment of the position of a press roller, after the fluted disc rotates by a tooth pitch, a second clamping block is ejected out of the fluted disc and clamped again, a supporting rod is in sliding connection with a clamping groove to support and limit the second clamping block, so that the second clamping block moves horizontally without deflection, under the action of the second clamping block, the range of the fluted disc rotating every time is one tooth pitch, so that the position of the compression roller can be uniformly and stably adjusted.

Description

Chromatography process and production equipment of oversized high-flatness PVC decorative film

Technical Field

The invention relates to the technical field of color register of PVC decorative films, in particular to a color register process and production equipment of a PVC decorative film with super-large size and high flatness.

Background

The color register is a printing technique, and its working process is that the ink is coated on the position with characters and images on the printing plate by manpower or printing machine, and then is transferred on the printing stock of metal plate, plastic, leather and wood plate, etc..

The position of an embossing roller in the existing color register equipment needs to be adjusted when embossing PVC films with different thicknesses, the adjustment amplitude depends on the experience of workers during adjustment, uniform and stable adjustment cannot be realized, certain errors exist during embossing, and the embossing effect is influenced. And therefore a corresponding improvement is needed.

Disclosure of Invention

The invention aims to provide a process and production equipment for chromatography of a PVC decorative film with super-large size and high flatness, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a chromatography equipment of high roughness PVC decorating film of oversize, contains bearing box, landing leg, gyro wheel, switch board, transport mechanism, grinding mechanism, PVC membrane and stoving mechanism, the bottom of bearing box rotates symmetrically and installs the landing leg, and bears the bottom of the case portion and be close to landing leg one side fixed mounting and have the gyro wheel symmetrically, bearing box one side fixed mounting has the switch board, the top fixed mounting who bears the case has transport mechanism, it has grinding mechanism to bear the roof portion to be close to transport mechanism input one side fixed mounting, the transport mechanism has the PVC membrane to put on the shelf, it has stoving mechanism to bear the roof portion to be close to transport mechanism output one side fixed mounting, the switch board all is electric connection with transport mechanism, grinding mechanism and stoving mechanism, the center department fixed mounting who bears the case has the mechanism of coloring that has stable adjustment mechanism.

Preferably, transport mechanism includes first mounting bracket, delivery roll, motor, second mounting bracket, input roller and conveyer belt, fixed mounting has first mounting bracket in bearing box top one side symmetry ground, and rotates between first mounting bracket and install the delivery roll, first mounting bracket one side fixed mounting is kept away from at the bearing box top has the motor, bearing box top is close to motor one side fixed mounting symmetrically and has the second mounting bracket, rotate between the second mounting bracket and install the input roller, and the output fixed connection of input roller one side and motor, the winding has the conveyer belt between output roller and input roller.

Preferably, grind mechanism includes base, battery stake, colloid mill, defeated hopper, discharge gate and radiating groove, the bearing box top is close to transport mechanism input one side fixed mounting and has the base, and upper surface one side fixed mounting of base has the battery stake, the base upper surface is kept away from battery stake one side fixed mounting and has the colloid mill, and the top fixed mounting of colloid mill has defeated hopper, colloid mill one side fixed mounting has the discharge gate, the radiating groove has been seted up symmetrically on the outer wall of base.

Preferably, the coloring mechanism comprises a bearing pile, a bearing spring, a fixing frame, an adjusting component, a threaded column, a threaded sleeve and a compression roller, wherein the bearing pile is fixedly arranged at one side of the center of the top of the bearing box, the fixing frame is connected to the top of the bearing pile through the bearing spring in an elastic mode, the adjusting component is fixedly arranged at one side of the bearing pile and far away from the top of the bearing box, the threaded column is arranged at one side of the bearing box and far away from the adjusting component, the threaded column is matched with the threaded sleeve at one side of the adjusting component and is rotated between the threaded sleeve and the fixing frame to be provided with the compression roller, and the compression roller is in extrusion contact with the PVC film.

Preferably, the adjusting assembly comprises a bottom plate, an installation block, a rotating shaft, a fluted disc, a rotary disc, an adjusting deflector rod, a first telescopic spring, a first clamping block, a second telescopic spring, a second clamping block, a support rod and a clamping groove, wherein the outer wall of one side of the center of the bearing box is fixedly provided with the bottom plate, the installation block is fixedly installed on one side of the upper surface of the bottom plate, the rotating shaft is rotatably installed in the installation block, the top end of the rotating shaft is fixedly connected with the threaded column, the fluted disc is fixedly installed at the bottom end of the rotating shaft, the rotary disc is rotatably installed on one side, far away from the installation block, of the upper surface of the bottom plate, the adjusting deflector rod is fixedly installed on the upper surface of the rotary disc, the first clamping block is elastically connected to one end of the adjusting deflector rod through the first telescopic spring, the first clamping block is matched with the fluted disc, the second clamping block is elastically connected to one side of the installation block through the second telescopic spring, and the second clamping block is matched with the fluted disc, the outer wall of the second clamping block is fixedly provided with a supporting rod, the bottom plate is provided with a clamping groove, and one end of the supporting rod, far away from the second clamping block, is connected with the clamping groove in a sliding mode.

Preferably, the outer wall of the adjusting deflector rod is uniformly provided with reticular stripes.

A process for chromatography of an oversized high-flatness PVC decorative film comprises the following steps:

pigment grinding: the pigment for color register is added into a colloid mill from a material conveying hopper, then a plasticizer is added into the colloid mill according to a proper proportion, the colloid mill is controlled to be started by a control cabinet, and the mixture is continuously stirred and ground, so that the pigment is completely soaked, and is led out from a discharge port to form paste color paste, which is also called color master batch.

Coating the master batch: and uniformly coating the color forming master batch prepared in the last step on the surface of a press roller.

And (3) adjusting the laminating height: confirm the thickness of chromatography according to actual production demand to use this as the standard and drive the screw thread post through the adjusting part among the mechanism of coloring and rotate, through cooperation between screw thread post and screw thread sleeve, realize the height control to the compression roller promptly, at screw thread sleeve's lift in-process, through bearing spring's elastic deformation, make the compression roller keep away from the highly synchronous change of screw thread sleeve one side.

Coloring a PVC film: lay the PVC membrane in the conveyer belt and be close to input roller one side levelly and smoothly, open the motor and make the conveyer belt operation carry out the straight line to the PVC membrane and carry, drive the compression roller rotation when reacing the compression roller position, with the surface of colour masterbatch rendition PVC membrane.

And (3) drying the pigment: the PVC membrane colored in the last step is conveyed to one side of the output roller through the conveying belt, the drying mechanism is controlled to blow hot air, and the pigment is dried, so that the pigment is completely combined with the PVC membrane, and then the color register of the PVC membrane is completed.

Compared with the prior art, the invention has the beneficial effects that:

the invention improves the adjusting structure in the existing chromatography equipment, the turntable rotates by adjusting the deflector rod, the first clamping block extrudes the fluted disc to rotate, the rotation of the fluted disc drives the threaded column to rotate through the transmission of the rotating shaft, the threaded column drives the threaded sleeve to move up and down again to complete the adjustment of the position of the compression roller, after the fluted disc rotates a tooth pitch, the second clamping block pops out of the fluted disc and is clamped again under the action of the second expansion spring, the support rod and the clamping groove are in sliding connection to support and limit the second clamping block so that the second clamping block moves horizontally without deflection, and the amplitude of each rotation of the fluted disc is one tooth pitch under the action of the second clamping block, thereby realizing the uniform and stable adjustment of the position of the compression roller.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a conveying mechanism according to the present invention;

FIG. 3 is a schematic view of the grinding mechanism of the present invention;

fig. 4 is a schematic structural view of a coloring mechanism according to the present invention;

FIG. 5 is a schematic diagram of a detail of the structure shown at A in FIG. 4;

FIG. 6 is a schematic view of a first construction of an adjustment assembly of the present invention;

FIG. 7 is a second schematic view of an adjustment assembly of the present invention.

In the figure: 1. a carrying case; 2. a support leg; 3. a roller; 4. a control cabinet; 5. a transport mechanism; 51. a first mounting bracket; 52. an output roller; 53. a motor; 54. a second mounting bracket; 55. an input roller; 56. a conveyor belt; 6. a grinding mechanism; 61. a base; 62. a battery pile; 63. colloid milling; 64. a material conveying hopper; 65. a discharge port; 66. a heat sink; 7. a PVC film;

8. a coloring mechanism; 81. carrying piles; 82. a load bearing spring; 83. a fixed mount; 84. an adjustment assembly; 841. a base plate;

842. mounting blocks; 843. a rotating shaft; 844. a fluted disc; 845. a turntable; 846. adjusting a deflector rod; 847. a first extension spring; 848. a first clamping block; 849. a second extension spring; 8410. a second fixture block; 8411. a support bar; 8412. a card slot; 85. a threaded post; 86. a threaded sleeve; 87. a compression roller; 9. and a drying mechanism.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the color register apparatus for an oversized high-flatness PVC decorative film in the figure comprises a carrying case 1, supporting legs 2, rollers 3, a control cabinet 4, a conveying mechanism 5, a grinding mechanism 6, a PVC film 7 and a drying mechanism 9, wherein the supporting legs 2 are symmetrically and rotatably mounted at the bottom of the carrying case 1, the rollers 3 are symmetrically and fixedly mounted at one side of the bottom of the carrying case 1, which is close to the supporting legs 2, the control cabinet 4 is fixedly mounted at one side of the carrying case 1, the conveying mechanism 5 is fixedly mounted at the top of the carrying case 1, the grinding mechanism 6 is fixedly mounted at one side of the top of the carrying case 1, which is close to the input end of the conveying mechanism 5, the PVC film 7 is erected on the conveying mechanism 5, the drying mechanism 9 is fixedly mounted at one side of the top of the carrying case 1, which is close to the output end of the conveying mechanism 5, and the control cabinet 4 is electrically connected with the conveying mechanism 5, the grinding mechanism 6 and the drying mechanism 9, the center of the bearing box 1 is fixedly provided with a coloring mechanism 8 with a stable adjusting mechanism.

Referring to fig. 2, the conveying mechanism 5 includes a first mounting frame 51, an output roller 52, a motor 53, a second mounting frame 54, an input roller 55 and a conveyor belt 56, the first mounting frame 51 is symmetrically and fixedly mounted on one side of the top of the carrying box 1, the output roller 52 is rotatably mounted between the first mounting frame 51, the motor 53 is fixedly mounted on one side of the top of the carrying box 1, which is far away from the first mounting frame 51, the second mounting frame 54 is symmetrically and fixedly mounted on one side of the top of the carrying box 1, which is close to the motor 53, the input roller 55 is rotatably mounted between the second mounting frame 54, one side of the input roller 55 is fixedly connected with the output end of the motor 53, and the conveyor belt 56 is wound between the output roller 52 and the input.

Referring to fig. 3, the grinding mechanism 6 includes a base 61, a battery pile 62, a colloid mill 63, a material conveying hopper 64, a material outlet 65, and a heat sink 66, the base 61 is fixedly mounted on one side of the top of the carrying box 1 close to the input end of the conveying mechanism 5, the battery pile 62 is fixedly mounted on one side of the upper surface of the base 61, the colloid mill 63 is fixedly mounted on one side of the upper surface of the base 61 far from the battery pile 62, the material conveying hopper 64 is fixedly mounted on the top of the colloid mill 63, the material outlet 65 is fixedly mounted on one side of the colloid mill 63, and the heat sink 66 is symmetrically formed on the outer wall of the base 61.

Referring to fig. 4 and 5, the coloring mechanism 8 includes a bearing pile 81, a bearing spring 82, a fixing frame 83, an adjusting component 84, a threaded post 85, a threaded sleeve 86 and a pressing roller 87, the bearing pile 81 is fixedly installed on one side of the center of the top of the bearing box 1, the fixing frame 83 is elastically connected to the top of the bearing pile 81 through the bearing spring 82, the adjusting component 84 is fixedly installed on one side of the top of the bearing box 1, which is far away from the bearing pile 81, the threaded post 85 is installed on one side of the adjusting component 84, the threaded sleeve 86 is matched with one side of the threaded post 85, which is far away from the adjusting component 84, the pressing roller 87 is rotatably installed between the threaded sleeve 86 and the fixing frame 83, and the pressing roller 87 is in pressing contact with the PVC film 7.

Referring to fig. 6 and 7, the adjusting assembly 84 includes a bottom plate 841, a mounting block 842, a rotating shaft 843, a fluted disc 844, a turntable 845, an adjusting lever 846, a first expansion spring 847, a first clamping block 848, a second expansion spring 849, a second clamping block 8410, a supporting rod 8411 and a clamping groove 8412, the bottom plate 841 is fixedly mounted on an outer wall of one side of the center of the carrying case 1, the mounting block 842 is fixedly mounted on one side of the upper surface of the bottom plate 841, the rotating shaft 843 is rotatably mounted in the mounting block 842, the top end of the rotating shaft 843 is fixedly connected with the threaded column 85, the fluted disc 844 is fixedly mounted at the bottom end of the rotating shaft 843, the turntable 845 is rotatably mounted on one side of the upper surface of the bottom plate 841 away from the mounting block 845, the adjusting lever 846 is fixedly mounted on the upper surface of the turntable 845, the first clamping block 848 is elastically connected to one end of the adjusting lever 846 through the first expansion spring 847, and the first clamping block 848 is matched with the fluted disc 844, the second fixture block 8410 is elastically connected to one side of the mounting block 842 through a second expansion spring 849, the second fixture block 8410 is matched with the fluted disc 844, a support rod 8411 is fixedly mounted on the outer wall of the second fixture block 8410, a clamping groove 8412 is formed in the bottom plate 841, and one end, far away from the second fixture block 8410, of the support rod 8411 is slidably connected with the clamping groove 8412.

The adjusting assembly 84 has the following function principle, the dial 845 is rotated by adjusting the deflector rod 846, meanwhile, the first fixture block 848 extrudes the fluted disc 844 to enable the fluted disc 844 to rotate, the fluted disc 844 rotates to enable the threaded column 85 to rotate through the transmission of the rotating shaft 843, the threaded column 85 drives the threaded sleeve 86 to move up and down again to complete the adjustment of the position of the press roller 87, after the fluted disc 844 rotates by one tooth pitch, the second fixture block 8410 pops out the fluted disc 844 and is clamped again under the action of the second expansion spring 849, the second fixture block 8410 is supported and limited by the support rod 8411 and the clamping groove 8412 in a sliding connection effect to enable the second fixture block 8410 to move horizontally without deflection, under the action of the second fixture block 8410, the amplitude of each rotation of the fluted disc 844 is one tooth pitch, and thus the uniform and stable adjustment of the position of the press roller 87 is realized.

Referring to fig. 7, the outer wall of the adjusting deflector rod 846 is uniformly provided with mesh stripes.

So that the worker does not slip when holding the adjustment lever 846.

pigment grinding: the pigment for color register is added into a colloid mill 63 through a material conveying hopper 64, then a plasticizer is added into the colloid mill 63 according to a proper proportion, the colloid mill 63 is controlled to be opened through a control cabinet 4, and the pigment is continuously stirred and ground to be completely soaked to be pasty color paste which is led out from a discharge port 65 and is also called color master batch.

Coating the master batch: the color forming master batch prepared in the previous step is uniformly coated on the surface of the press roller 87.

And (3) adjusting the laminating height: the color register thickness is determined according to actual production requirements, the threaded column 85 is driven to rotate through the adjusting assembly 84 in the coloring mechanism 8 by taking the color register thickness as a standard, the height adjustment of the threaded sleeve 86, namely the height adjustment of the pressing roller 87, is realized through the matching between the threaded column 85 and the threaded sleeve 86, and in the lifting process of the threaded sleeve 86, the height of one side, away from the threaded sleeve 86, of the pressing roller 87 is synchronously changed through the elastic deformation of the bearing spring 82.

Coloring a PVC film: the PVC film 7 is flatly laid on one side, close to the input roller 55, of the conveyor belt 56, the motor 53 is started to enable the conveyor belt 56 to run to carry out linear conveying on the PVC film 7, the press roller 87 is driven to rotate when the conveyor belt reaches the position of the press roller 87, and the color forming master batch is transferred to the surface of the PVC film 7.

And (3) drying the pigment: the PVC film 7 colored in the previous step is conveyed to one side of the output roller 52 through the conveying belt 56, the drying mechanism 9 is controlled to blow out hot air to dry the pigment, so that the pigment is completely combined with the PVC film 7, and the color register of the PVC film 7 is completed.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The chromatography equipment for the oversized high-flatness PVC decorative film comprises a bearing box (1), supporting legs (2), idler wheels (3), a control cabinet (4), a conveying mechanism (5), a grinding mechanism (6), a PVC film (7) and a drying mechanism (9), wherein the supporting legs (2) are symmetrically and rotatably installed at the bottom of the bearing box (1), the idler wheels (3) are symmetrically and fixedly installed at one side of the bottom of the bearing box (1) close to the supporting legs (2), the control cabinet (4) is fixedly installed at one side of the bearing box (1), the conveying mechanism (5) is fixedly installed at the top of the bearing box (1), the grinding mechanism (6) is fixedly installed at one side of the top of the bearing box (1) close to the input end of the conveying mechanism (5), the PVC film (7) is erected on the conveying mechanism (5), the drying mechanism (9) is fixedly installed at one side of the top of the bearing box (1) close to the output end of the conveying mechanism (5), switch board (4) and transport mechanism (5), grind mechanism (6) and stoving mechanism (9) all are electric connection, its characterized in that: the center of the bearing box (1) is fixedly provided with a coloring mechanism (8) with a stable adjusting mechanism.

2. The chromatography equipment for the oversized high-flatness PVC decorative film as claimed in claim 1, wherein: transport mechanism (5) include first mounting bracket (51), output roller (52), motor (53), second mounting bracket (54), input roller (55) and conveyer belt (56), bearing box (1) top one side fixed mounting has first mounting bracket (51) symmetrically, and rotates between first mounting bracket (51) and install output roller (52), bearing box (1) top is kept away from first mounting bracket (51) one side fixed mounting and is had motor (53), bearing box (1) top is close to motor (53) one side fixed mounting symmetrically and has second mounting bracket (54), rotate between second mounting bracket (54) and install input roller (55), and input roller (55) one side and the output fixed connection of motor (53), the winding has conveyer belt (56) between output roller (52) and input roller (55).

3. The chromatography equipment for the oversized high-flatness PVC decorative film as claimed in claim 1, wherein: grind mechanism (6) including base (61), battery stake (62), colloid mill (63), defeated hopper (64), discharge gate (65) and radiating groove (66), bearing box (1) top is close to transport mechanism (5) input one side fixed mounting and has base (61), and upper surface one side fixed mounting of base (61) has battery stake (62), base (61) upper surface is kept away from battery stake (62) one side fixed mounting and is equipped with colloid mill (63), and the top fixed mounting of colloid mill (63) has defeated hopper (64), colloid mill (63) one side fixed mounting has discharge gate (65), radiating groove (66) have been seted up on the outer wall of base (61) symmetrically.

4. The chromatography equipment for the oversized high-flatness PVC decorative film as claimed in claim 1, wherein: the coloring mechanism (8) comprises a bearing pile (81), a bearing spring (82), a fixed frame (83), an adjusting component (84), a threaded column (85), a threaded sleeve (86) and a press roller (87), one side of the center of the top of the bearing box (1) is fixedly provided with a bearing pile (81), the fixed frame (83) is elastically connected to the top of the bearing pile (81) through a bearing spring (82), an adjusting component (84) is fixedly arranged on one side of the top of the bearing box (1) far away from the bearing pile (81), and one side of the adjusting component (84) far away from the bearing box (1) is provided with a threaded column (85), a threaded sleeve (86) is matched on one side of the threaded column (85) far away from the adjusting component (84), and a press roller (87) is rotatably arranged between the threaded sleeve (86) and the fixed frame (83), and the press roller (87) is in extrusion contact with the PVC film (7).

5. The chromatography equipment for the oversized high-flatness PVC decorative film as claimed in claim 4, wherein: the adjusting assembly (84) comprises a bottom plate (841), an installation block (842), a rotating shaft (843), a fluted disc (844), a turntable (845), an adjusting deflector rod (846), a first telescopic spring (847), a first fixture block (848), a second telescopic spring (849), a second fixture block (8410), a supporting rod (8411) and a clamping groove (8412), wherein the outer wall of one side of the center of the bearing box (1) is fixedly provided with the bottom plate (841), one side of the upper surface of the bottom plate (841) is fixedly provided with the installation block (842), the rotating shaft (843) is rotatably arranged in the installation block (842), the top end of the rotating shaft (843) is fixedly connected with the threaded column (85), the fluted disc (844) is fixedly arranged at the bottom end of the rotating shaft (843), the turntable (845) is rotatably arranged at one side, far away from the installation block (842), of the upper surface of the bottom plate (841), the adjusting deflector rod (846) is fixedly arranged on the upper surface of the turntable (845), first fixture block (848) are connected in the one end of adjusting driving lever (846) through first expanding spring (847) elasticity, and first fixture block (848) and fluted disc (844) cooperation, second fixture block (8410) are connected in installation piece (842) one side through second expanding spring (849) elasticity, and second fixture block (8410) and fluted disc (844) cooperation, fixed mounting has bracing piece (8411) on the outer wall of second fixture block (8410), draw-in groove (8412) have been seted up on bottom plate (841), and second fixture block (8410) one end and draw-in groove (8412) sliding connection are kept away from in bracing piece (8411).

6. The chromatography equipment for the oversized high-flatness PVC decorative film as claimed in claim 5, wherein: the outer wall of the adjusting deflector rod (846) is evenly provided with reticular stripes.

7. The process for chromatography of the oversized high-flatness PVC decorative film according to any one of claims 1-6, characterized by comprising the following steps:

1) pigment grinding: adding pigment for color register into a colloid mill (63) from a material conveying hopper (64), adding a plasticizer into the colloid mill according to a proper proportion, controlling the colloid mill (63) to be opened through a control cabinet (4), continuously stirring and grinding to ensure that the pigment is completely soaked to form paste color paste which is led out from a discharge port (65), also called color master batch;

2) coating the master batch: uniformly coating the color forming master batch prepared in the last step on the surface of a press roller (87);

3) and (3) adjusting the laminating height: determining the color register thickness according to the actual production requirement, driving a threaded column (85) to rotate through an adjusting component (84) in a coloring mechanism (8) by taking the color register thickness as a standard, realizing the height adjustment of the threaded sleeve (86) through the matching between the threaded column (85) and the threaded sleeve (86), namely realizing the height adjustment of a press roller (87), and enabling the height of one side, away from the threaded sleeve (86), of the press roller (87) to synchronously change through the elastic deformation of a bearing spring (82) in the lifting process of the threaded sleeve (86);

4) coloring a PVC film: the PVC film (7) is flatly laid on one side, close to the input roller (55), of the conveyor belt (56), the motor (53) is started to enable the conveyor belt (56) to run to carry out linear conveying on the PVC film (7), the press roller (87) is driven to rotate when the conveyor belt reaches the position of the press roller (87), and the color forming master batch is transferred to the surface of the PVC film (7);

5) and (3) drying the pigment: and (3) conveying the PVC film (7) colored in the last step to one side of an output roller (52) through a conveying belt (56), controlling a drying mechanism (9) to blow hot air, and drying the pigment to ensure that the pigment is completely combined with the PVC film (7), namely finishing the color register of the PVC film (7).