Production equipment for PETG (polyethylene terephthalate glycol) high-resistance and high-gloss film

Abstract

The utility model relates to the technical field of PETG (Polyethylene Terephthalate Glycol) film production equipment, provides PETG high-resistance and high-gloss film production equipment, and solves the technical problems that the product quality and the yield are influenced due to poor cleaning effect of a cleaning roller pair in the continuous production of the existing PETG high-resistance and high-gloss film. The equipment comprises a raw material mixing machine, an extruder, a film blowing machine, a cooling chamber, a coating machine, a drying oven and a winding machine which are connected in sequence, and is characterized in that a cleaning roller pair is arranged between the cooling chamber and the coating machine and comprises a first-stage cleaning roller, a second-stage cleaning roller, a transverse movement driving unit and a pressure sensor; the second-stage cleaning roller abuts against the first-stage cleaning roller under the action of the transverse movement driving unit, and the pressure sensor is used for indirectly or directly detecting the abutting pressure of the first-stage cleaning roller and the second-stage cleaning roller.

Description

TECHNICAL FIELD

[0001] The utility model relates to PETG film production equipment technical field, concretely relates to a kind of PETG high light resistance film production equipment. BACKGROUND

[0002] PETG film has good optical transparency, impact resistance and chemical resistance, and is also called PETG high light film, PETG high resistance film or PETG high light resistance film in some occasions.The film is coated on its surface to form a coating layer during production to improve the functionality of the PETG film.The surface of the film needs to be cleaned before coating, which is mainly achieved by cleaning the rollers.The cleaning rollers mainly consist of a primary cleaning roller with a viscous silicone sleeve and a secondary cleaning roller with a high-adhesion film.The primary cleaning roller is used to adsorb and clean the surface of the film, and the secondary cleaning roller is used to transfer the dust and impurities on the surface of the primary cleaning roller to its own surface.However, in actual production, we found that as the high-adhesion film on the surface of the secondary cleaning roller thins out, its adhesion effect gradually decreases, and simply using an elastic mechanism consisting of a spring to elastically resist the secondary cleaning roller against the surface of the primary cleaning roller can affect the normal operation of the primary cleaning roller, thereby affecting the cleaning effect and the quality of the film.

[0003] Therefore, we propose a PETG high light resistance film production equipment. UTILITY MODEL CONTENT

[0004] (I) Technical problem solved

[0005] To overcome the shortcomings of the prior art, the utility model provides a PETG high light resistance film production equipment, which is designed reasonably and is easy to adjust, and solves the technical problem of poor cleaning effect of the cleaning rollers in the continuous production of the existing PETG high light resistance film, which affects the product quality and yield.

[0006] (II) Technical solution

[0007] To achieve the above purpose, the utility model is implemented by the following technical solutions:

[0008] A PETG high light resistance film production equipment, comprising a raw material mixer, an extruder, a film blowing machine, a cooling chamber, a coating machine, an oven and a winding machine connected in sequence, characterized in that: a cleaning roller is provided between the cooling chamber and the coating machine, the cleaning roller comprises a primary cleaning roller, a secondary cleaning roller, a horizontal movement driving unit and a pressure sensor, the secondary cleaning roller is in abutment with the primary cleaning roller under the action of the horizontal movement driving unit, and the pressure sensor is used to indirectly or directly detect the pressure of the abutment between the primary cleaning roller and the secondary cleaning roller.

[0009] Further, the primary cleaning roller is rotatably supported at both ends on a fixed support base, the secondary cleaning roller is rotatably supported at both ends on a movable support base, the movable support base is slidably mounted on a guide rail and can be translated toward the fixed support base under the action of a transverse movement driving unit, the fixed support base and the movable support base are connected by an elastic mechanism, the movable support base is provided with a pressure sensor, and the sensing end of the pressure sensor abuts against the fixed support base.

[0010] Further, the elastic mechanism includes guide columns and springs, the fixed support base is provided with guide columns on both sides, the guide columns are inserted into guide holes of the movable support base, and the guide columns are provided with springs.

[0011] Further, the cleaning roller further comprises a locking driving unit and a pressing plate, the output end of the locking driving unit is connected with the pressing plate, and the pressing plate is pressed and fixed on the movable support base under the action of the locking driving unit.

[0012] Further, the transverse movement driving unit is an electric push rod.

[0013] Further, the coating machine comprises a coating roller, a storage tank and a scraper, the coating roller is rotatably supported at both ends on the upper side of the storage tank, the scraper is arranged in a spaced manner with the coating roller and is used to scrape off the coating on the surface of the coating roller which exceeds the preset thickness, the ends of the scraper are supported on a connecting seat, and the connecting seat is fixed on the side wall of the storage tank.

[0014] Further, the ends of the scraper are clamped in a U-shaped locking frame, the U-shaped locking frame is fixed on the connecting seat through locking bolts, and the connecting shaft is provided with a strip-shaped hole extending in the vertical direction and through which the locking bolts pass.

[0015] Further, the cooling chamber comprises a box-shaped shell, the inner cavity of the shell is divided into a transition chamber, at least two cooling chambers by a fixed partition plate and a movable partition plate arranged in sequence along the advancing direction of the PETG film, the fixed partition plate and the movable partition plate are respectively formed with a film outlet through which the PETG film passes, a pair of flattening rollers distributed above and below are rotatably arranged in the transition chamber, two groups of cooling nozzle assemblies distributed above and below are arranged in the cooling chambers, a plurality of insertion ports are formed in the top wall of the shell along the advancing direction of the PETG film, and a positioning groove is arranged on the bottom wall of the shell opposite to the insertion ports, the movable partition plate abuts against the positioning groove after being inserted into the insertion port, and the insertion port without the movable partition plate is sealed by a silica gel sealing strip.

[0016] Further, at least one pair of upper and lower conveying rollers are arranged outside the film outlet of the shell, a tensioning roller is arranged between a pair of the conveying rollers and the winding machine, and both ends of the winding roller of the winding machine, a pair of the conveying rollers and the tensioning roller are rotatably supported on a mounting frame.

[0017] (III) Beneficial Effects

[0018] The utility model provides a PETG high anti high light film production facility possesses following beneficial effects:

[0019] 1, the high viscosity film tear thinning of the surface of the secondary cleaning roller of the cleaning roller, the horizontal drive unit starts, drives the secondary cleaning roller to the first cleaning roller translation, until the abutment pressure of both reaches the preset value or preset range, on the one hand, can ensure that the first cleaning roller and the secondary cleaning roller are in close contact, so that the secondary cleaning roller can effectively adhere and remove the dust, impurities on the surface of the first cleaning roller, and further ensure the effective cleaning of the first cleaning roller, on the other hand, can avoid the abutment pressure of the first cleaning roller and the secondary cleaning roller too large, leading to the deformation of the silica gel sleeve on the surface of the first cleaning roller, even the silica gel sleeve is compacted, influence the adhesion of the silica gel sleeve, and further influence the cleaning effect of the first cleaning roller on the film material;

[0020] 2, in the production process, it is found that PETG film is suddenly contacted with cooling airflow, and corrugation, wrinkle is easily generated on the surface of film material, influence product quality, yield, so before air cooling, a pair of flattening rollers is used to carry out preliminary flattening operation to PETG film material, and subsequent several cooling chambers form segmented cooling, avoid the corrugation, wrinkle caused by sudden temperature drop of PETG film material;

[0021] 3, can lift and lower synchronous regulation the interval between two groups of cooling spray head assemblies and film material, to adapt to the cooling demand of PETG film material of different thickness. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the structure schematic drawing of the utility model structure;

[0023] Figure 2 It is the structure schematic drawing of the utility model fixed support seat and movable support seat cooperation;

[0024] Figure 3 It is the structure schematic drawing of the utility model coating machine;

[0025] Figure 4 It is the sectional view schematic drawing of the utility model cooling chamber.

[0026] In the figure: 1, raw material mixer; 2, extruder; 3, film blowing machine; 4, cooling chamber; 41, shell; 411, film outlet; 412, positioning groove; 42, cooling nozzle; 43, fixed partition; 44, movable partition; 45, silica gel sealing strip; 5, workbench; 6, flattening roller; 7, conveying roller; 8, tensioning roller; 91, first-stage cleaning roller; 92, second-stage cleaning roller; 93, fixed support seat; 94, movable support seat; 95, guide rail; 96, guide column; 97, spring; 98, pressure sensor; 99, transverse movement driving unit; 10, mounting frame; 11, coating machine; 111, storage tank; 112, coating roller; 113, scraper; 114, U-shaped locking frame; 115, connecting seat; 12, oven; 13, winding machine. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] Referring to the drawings Figures 1-4 A PETG high-anti high-light film production equipment, comprising a workbench 5, a raw material mixer 1, an extruder 2, a film blowing machine 3, a cooling chamber 4, a coating machine 11, an oven 12 and a winding machine 13 mounted on the workbench 5 and connected in sequence, characterized in that: a cleaning roller pair is arranged between the cooling chamber 4 and the coating machine 11, the cleaning roller pair comprises a first-stage cleaning roller 91, a second-stage cleaning roller 92, a transverse movement driving unit 99, a pressure sensor 98, a locking driving unit and a pressing plate, the second-stage cleaning roller 92 is in abutment with the first-stage cleaning roller 91 under the action of the transverse movement driving unit 99, the transverse movement driving unit 99 is selected as an electric push rod, the pressure sensor 98 is used for indirectly detecting the pressure of the abutment of the first-stage cleaning roller 91 and the second-stage cleaning roller 92, the output end of the locking driving unit is connected with the pressing plate, and the pressing plate is used for tightly fixing (locking) the movable support seat 94 under the action of the locking driving unit (the locking driving unit and the pressing plate are not shown in the figure, the locking driving unit can be selected as an air cylinder, and the pressing plate fixes the protruding part outside the bottom of the movable support seat 94).

[0029] In the embodiment, the primary cleaning roller 91 is rotatably supported at both ends on a fixed support base 93, the secondary cleaning roller 92 is rotatably supported at both ends on a movable support base 94, the movable support base 94 is slidingly installed on a guide rail 95 and can be translated toward the fixed support base 93 under the action of a transverse driving unit 99, the fixed support base 93 and the movable support base 94 are connected through an elastic mechanism, the movable support base 94 is installed with a pressure sensor 98, the sensing end of the pressure sensor 98 abuts against the fixed support base 93, specifically, the elastic mechanism includes guide columns 96 and springs 97, the guide columns 96 are installed on both sides of the fixed support base 93, the guide columns 96 are inserted into guide holes of the movable support base 94, the springs 97 are sleeved on the guide columns 96, and both ends of the springs 97 abut against the fixed support base 93 and the movable support base 94, respectively. The elastic mechanism can avoid the hard contact between the fixed support base 93 and the movable support base 94 on the one hand, and can eliminate the translation of the movable support base 94 on the other hand

[0030] In the embodiment, the coating machine 11 includes a coating roller 112, a storage tank 111, and a scraper 113, the coating roller 112 is rotatably supported at both ends on the upper side of the storage tank 111, the scraper 113 is arranged in a spaced manner with the coating roller 112 and is used for scraping off the paint exceeding the preset thickness on the surface of the coating roller 112, the scraper 113 is supported at both ends on a connecting base 115, and the connecting base 115 is fixed to the side wall of the storage tank 111. Specifically, both ends of the scraper 113 are clamped in a U-shaped locking frame 114, the U-shaped locking frame 114 is fixed on the connecting base 115 through locking bolts, the connecting shaft is provided with a strip-shaped hole extending in the vertical direction and through which the locking bolts pass, and by rotating and vertically translating the U-shaped locking frame 114 along the strip-shaped hole, the interval between the scraper 113 and the coating roller 112 can be adjusted.

[0031] In this embodiment, the cooling chamber 4 includes a box-shaped shell 41, the inner cavity of the shell 41 is divided into a transition chamber, at least two cooling chambers (one movable partition 44 corresponds to two cooling chambers, N movable partitions 44 correspond to N+ cooling chambers) by the fixed partition 43 and the movable partition 44 arranged in turn along the PETG film advancing direction, the fixed partition 43 and the movable partition 44 are respectively formed with a film outlet 411 (for reference to the film outlet 411 of the side wall of the shell 41) for the PETG film to pass through, a pair of flattening rollers 6 distributed above and below are rotatably arranged in the transition chamber, the upper flattening roller 6 in the pair of flattening rollers 6 has its both ends bearing seats slidingly mounted on the two side walls of the transition chamber in the up-down direction and driven to adjust the height by a lifting mechanism, the lifting mechanism can be a manual lifting mechanism mainly composed of a screw nut pair matched with a hand wheel, or directly an automatic lifting mechanism mainly composed of an electric push rod, which is a prior art and not shown in the figure, the cooling chamber is provided with two groups of cooling nozzles 42 components distributed above and below, the top wall of the shell 41 is provided with a plurality of insertion ports along the PETG film advancing direction, and the bottom wall is provided with a positioning groove 412 arranged opposite to the insertion port, the movable partition 44 is inserted into the insertion port and abuts against the positioning groove 412 (the upper edge of the movable partition 44 can also be fixedly connected with the shell 41 by bolts), and the insertion port without the movable partition 44 is sealed by a silica gel sealing strip 45. Each group of the cooling nozzle 42 components is distributed in a matrix along the PETG film advancing direction and the PETG film width direction, and each longitudinal row of cooling nozzles 42 arranged along the PETG film width direction is connected to the same support beam, and the support beam is supported at the front and rear side walls of the shell 41.

[0032] In this embodiment, the raw material mixer 1 is a raw material mixing and drying machine, which reduces the water content in the raw materials and ensures the mechanical properties, transparency and surface quality (such as reducing defects such as bubbles, silver wires and surface roughness) of the film product.

[0033] In this embodiment, at least one pair of upper and lower distribution conveying rollers 7 (one or more pairs of conveying rollers 7 can also be arranged in the cooling chamber 4 according to the situation) are arranged outside the film outlet 411 of the shell 41, a tensioning roller 8 is rotatably arranged between the pair of conveying rollers 7 and the winding machine 13, and the two ends of the pair of conveying rollers 7, the tensioning roller 8 and the winding roller of the winding machine 13 are rotatably supported on the mounting bracket 10, the mounting bracket is fixed on the workbench, and the conveying roller 7 is driven to rotate by the chain, sprocket and motor, which is a prior art and not shown in the figure.

[0034] It is to be noted that the relational terms herein, such as first and second, and the like, are used solely to distinguish one from another entity or action without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, 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 can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0035] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalent ones; and these modifications or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A PETG high-impact high-gloss film production equipment, comprising a raw material mixing machine, an extruder, a film blowing machine, a cooling chamber, a coating machine, an oven and a winding machine connected in sequence, characterized in that: The cleaning roller pair is arranged between the cooling chamber and the coating machine, and comprises a primary cleaning roller, a secondary cleaning roller, a transverse driving unit and a pressure sensor.

2. The PETG high-impact high-gloss film production apparatus of claim 1, wherein: The two ends of the primary cleaning roller are rotatably supported on a fixed support seat, and the two ends of the secondary cleaning roller are rotatably supported on a movable support seat.

3. The PETG high-impact high-clarity film production apparatus of claim 2, wherein: The movable support seat is slidably installed on a guide rail and can be translated towards the fixed support seat under the action of the transverse driving unit.

4. The PETG high-impact high-clarity film production apparatus of claim 2, wherein: The elastic mechanism comprises guide columns and springs.

5. The PETG high-impact high-gloss film production apparatus of any one of claims 2-4, wherein: The cleaning roller pair further comprises a locking driving unit and a pressing plate.

6. The PETG high-impact high-clarity film production apparatus of claim 1, wherein: The output end of the locking driving unit is connected with the pressing plate.

7. The PETG high-impact high-clarity film production apparatus of claim 6, wherein: The transverse driving unit is an electric push rod.

8. The PETG high-impact high-clarity film production apparatus of claim 1, wherein: The coating machine comprises a coating roller, a storage tank and a scraper. The two ends of the scraper are clamped in a U-shaped locking frame. The U-shaped locking frame is fixed on the connecting seat by locking bolts. The cooling chamber comprises a box-shaped shell. The inner cavity of the shell is divided into a transition chamber, at least two cooling chambers by a fixed partition plate and a movable partition plate arranged in sequence along the advancing direction of the PETG film. The fixed partition plate and the movable partition plate are respectively provided with a film outlet for the PETG film to pass through. A pair of flattening rollers are rotatably arranged in the transition chamber. Two groups of cooling nozzle assemblies are arranged in the cooling chambers. The top wall of the shell is provided with a plurality of insertion ports along the advancing direction of the PETG film. The bottom wall is provided with a positioning groove opposite to the insertion ports. The movable partition plate abuts against the positioning groove after being inserted into the insertion port. The insertion ports without the movable partition plate are sealed by a silica gel sealing strip.

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