A PET film film-discharging and anti-bubble squeezing device

Abstract

The utility model provides a film-extrusion anti-bubble extrusion device for PET film, comprising a U-shaped frame, notches are provided in the center of the front and rear walls of the U-shaped frame, an inverted U-shaped mounting plate is provided at the notch position, slide grooves are provided on the opposite surfaces of the U-shaped mounting plate, accompanying plates are slidably connected between the slide grooves, a group of connecting plates are provided at the bottom of the accompanying plates, and an extrusion roller is rotatably connected between the group of connecting plates. The utility model utilizes a rotatable connection of the extrusion roller between the connecting plates, and a rotatable connection of the supporting roller just below the extrusion roller in the U-shaped mounting plate. Under the elastic force of the spring, there will be a certain pressure in the gap between the extrusion roller and the supporting roller. When the PET film passes through the extrusion tube and the supporting roller, it will be squeezed, which can effectively remove bubbles on the PET film. The roller extrusion can avoid scratching the PET surface to cause damage and scraping off the coating on it, so that the production quality of the PET film will not be affected.

Description

Technical Field

[0001] The utility model relates to a film-discharging and anti-bubble squeezing device for a PET film, and belongs to the technical field of auxiliary equipment for PET film production. Background Art

[0002] PET film, the full name of which is Polyethylene Terephthalate Film, is a widely used plastic film material. PET has good mechanical properties, electrical insulation, light transmittance, chemical resistance and heat resistance. Due to these characteristics, PET film is widely used in many industries and fields. In the packaging industry: PET film is often used to make beverage bottles, food packaging, medical packaging, etc.; in the electronics industry: PET film is used to make polarizers for liquid crystal displays, touch screen protective films, insulating films for electronic components, etc.; in the textile industry: PET can also be made into polyester fibers through melt spinning, which are used to make clothing and fiber products. Bubbles are more likely to be generated during the reproduction process of PET film, which will affect the use effect of the PET film.

[0003] A Chinese utility model patent with the announcement number CN219312014U discloses a "device for laminating PET sheets", including a laminating machine body, a transmission device body fixedly connected to the front of the laminating machine body, a top cover fixedly connected to the top of the transmission device body, and a mounting plate fixedly connected to the front and rear ends of the inner cavity of the transmission device body and the top of the inner cavity of the top cover. The utility model is provided with a laminating machine body, a transmission device body, a top cover, a mounting plate, a spring and an inclined plate. After the laminating machine body performs a laminating operation on the sheet to be laminar, it is transported under the action of the transmission device body. When the sheet is displaced, it will be displaced between the two inclined plates and the horizontal plate under the guidance of the inclined plate, and the inclined plate is pushed to squeeze the spring and the telescopic rod, thereby solving the problem that after the existing laminating device completes the thermoplastic laminating operation, bubbles appear on the surface of the lamination due to the action of thermal expansion and contraction, thereby affecting the laminating effect of the sheet.

[0004] The above patent uses the elastic force of the spring to apply force to the horizontal plate to squeeze the PET film to achieve the purpose of preventing bubbles. However, after research, it is found that the above patent needs to use an inclined plate to guide the flow during the squeezing and anti-bubble process. There is a problem that the PET film may be scratched during the conveying process, which will affect the production quality of the PET film. Therefore, the utility model proposes a PET film film outlet anti-bubble squeezing device to solve the above problem. Utility Model Content

[0005] Based on the above background, the purpose of the utility model is to provide a PET film film outlet anti-bubble squeezing device to solve the problems in the background technology.

[0006] The utility model provides the following technical solutions:

[0007] A PET film outlet bubble-proof extrusion device comprises a U-shaped frame, wherein notches are provided in the center of the front and rear walls of the U-shaped frame, an inverted U-shaped mounting plate is provided at the notch position, slide grooves are provided on the opposite surfaces of the U-shaped mounting plate, an accompanying plate is slidably connected between the slide grooves, a group of connecting plates is provided at the bottom of the accompanying plate, an extrusion roller is rotatably connected between the connecting plates, a plurality of springs are fixedly connected to the top of the accompanying plate, and an adjusting plate is fixedly connected to the top of the plurality of springs, both ends of the adjusting plate are slidably connected in the slide groove, an adjusting assembly is provided on the U-shaped mounting plate, the adjusting assembly is rotatably connected to the adjusting plate, and a scraper assembly is provided on the left side of the accompanying plate.

[0008] Preferably, the inner bottom of the U-shaped mounting plate is also rotatably connected to a supporting roller, and the supporting roller is located directly below the squeezing roller.

[0009] Preferably, the adjustment assembly includes an adjustment screw, the adjustment screw is threadedly connected to the top center of the U-shaped mounting plate, the bottom end of the adjustment screw is rotatably connected to the adjustment plate, and the bottom end of the adjustment screw is fixedly connected to a handwheel.

[0010] Preferably, the scraper assembly comprises a group of extension plates, wherein the group of extension plates is fixedly connected to the left end face of the accompanying plate, and the group of extension plates respectively corresponds to a group of connecting plates, and a connecting shaft is rotatably connected to the group of extension plates, a hook-type scraper is welded to the bottom of the connecting shaft, and the blade of the hook-type scraper can be tangent to the extrusion roller, and a positioning bolt is threadedly connected to the right end face of the group of extension plates, and the right end of the positioning bolt can abut against the connecting shaft.

[0011] Preferably, the front end roller shaft of the extrusion roller passes through the surface of the U-shaped mounting plate, and the part of the roller shaft at the front end of the extrusion roller that passes through the surface of the U-shaped mounting plate is connected to a driving pulley, and a motor is installed on the rear end surface of the U-shaped mounting plate, and the output shaft of the motor is fixedly connected to the rear end roller shaft of the extrusion roller.

[0012] Preferably, feed rollers are rotatably connected to the left and right sides of the notch on the U-shaped frame, the front end roller shafts of the feed rollers pass through the front end surface of the U-shaped frame, and the front end roller shafts of the feed rollers pass through the front end surface of the U-shaped frame. A driven pulley is connected to the part of the front end roller shaft of the feed roller that passes through the front end surface of the U-shaped frame, and the driven pulleys are respectively connected to the driving pulley through belts.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] The utility model discloses a PET film outlet anti-bubble squeezing device, which connects the squeezing rollers by rotating between the connecting plates, and the connecting supporting rollers by rotating just below the squeezing rollers in the U-shaped mounting plate. Under the elastic force of the spring, a certain pressure will exist in the gap between the squeezing rollers and the supporting rollers. When the PET film passes through the squeezing tube and the supporting rollers, it will be squeezed, and the bubbles on the PET film can be effectively removed. The roller squeezing can avoid scratching the PET surface to cause damage to it and scraping off the coating thereon.

[0015] The utility model discloses a PET film outlet bubble prevention extrusion device, which connects the bottom end of the adjusting screw with the adjusting plate through rotation. When the hand wheel is turned, the adjusting screw is driven to screw in or out of the U-shaped mounting plate, and the adjusting plate can be driven to slide up and down in the slide groove, and the deformation stroke of the spring between the accompanying plate and the adjusting plate can be released or compressed, so as to achieve the problem of adjusting the extrusion force. The utility model can adjust the extrusion force according to the different extrusion forces required by different types of PET films.

[0016] The utility model discloses a PET film film-extrusion device for preventing bubbles from forming. By arranging a hook-shaped scraper, when the hook-shaped scraper is tangent to an extrusion roller, dust or coating waste adhered to the extrusion roller can be scraped off and collected in the hook-shaped scraper, thereby avoiding the influence of dust and coating waste on the PET film during the extrusion process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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 in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0018] Figure 1 It is a front-view stereoscopic structural schematic diagram of the utility model;

[0019] Figure 2 It is a rear-view stereoscopic structural schematic diagram of the utility model;

[0020] Figure 3 It is a schematic diagram of the structure of the utility model when it is working;

[0021] In the figure: 1. U-shaped frame; 2. adjustment assembly; 201. adjustment screw; 202. hand wheel; 3. scraper assembly; 301. extension plate; 302. connecting shaft; 303. hook-type scraper; 304. positioning bolt; 4. notch; 5. U-shaped mounting plate; 6. slide groove; 7. accompanying plate; 8. connecting plate; 9. extrusion roller; 10. spring; 11. adjustment plate; 12. support roller; 13. driving pulley; 14. motor; 15. feed roller; 16. driven pulley; 17. belt. DETAILED DESCRIPTION

[0022] The technical solution of the utility model is further described in detail below through specific embodiments and in combination with the accompanying drawings. It should be understood that the implementation of the utility model is not limited to the following embodiments, and any form of modification and / or change made to the utility model will fall within the protection scope of the utility model.

[0023] In the present invention, unless otherwise specified, all parts and percentages are weight units, and the equipment and raw materials used can be purchased from the market or are commonly used in the field. The methods in the following embodiments, unless otherwise specified, are conventional methods in the field. The components or equipment in the following embodiments, unless otherwise specified, are universal standard parts or components known to those skilled in the art, and their structures and principles are known to those skilled in the art through technical manuals or conventional experimental methods.

[0024] The following is a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings. In the following detailed description, for ease of explanation, many specific details are described to provide a comprehensive understanding of the embodiments of the present invention. However, one or more embodiments may also be implemented by those skilled in the art without these specific details.

[0025] like Figure 1-Figure 3 As shown, a film-discharging and anti-bubble squeezing device for PET film comprises a U-shaped frame 1, a notch 4 is provided in the center of the front and rear walls of the U-shaped frame 1, an inverted U-shaped mounting plate 5 is provided at the position of the notch 4, a slide groove 6 is provided on the opposite surfaces of the U-shaped mounting plate 5, a traveling plate 7 is slidably connected between the slide grooves 6, a group of connecting plates 8 is provided at the bottom of the traveling plate 7, a squeezing roller 9 is rotatably connected between the group of connecting plates 8, a plurality of springs 10 are fixedly connected to the top of the traveling plate 7, an adjusting plate 11 is fixedly connected to the top of the plurality of springs 10, both ends of the adjusting plate 11 are slidably connected in the slide groove 6, an adjusting assembly 2 is provided on the U-shaped mounting plate 5, the adjusting assembly 2 is rotatably connected to the adjusting plate 11, and a scraper assembly 3 is provided on the left side of the traveling plate 7. A supporting roller 12 is also rotatably connected to the bottom of the U-shaped mounting plate 5, and the supporting roller 12 is located directly below the squeezing roller 9.

[0026] In the above technical solution, by rotating the connecting squeezing roller 9 between the connecting plates 8, the connecting supporting roller 12 is rotated just below the squeezing roller 9 in the U-shaped mounting plate 5. Under the elastic force of the spring 10, there will be a certain pressure in the gap between the squeezing roller 9 and the supporting roller 12. When the PET film passes through the squeezing tube and the supporting roller 12, it will be squeezed, which can effectively remove the bubbles on the PET film. The use of roller squeezing can avoid scratching the PET surface to cause damage to it and scraping off the coating on it.

[0027] In the present invention, the adjustment assembly 2 includes an adjustment screw 201, which is threadedly connected to the top center of the U-shaped mounting plate 5, and the bottom end of the adjustment screw 201 is rotatably connected to the adjustment plate 11, and the bottom end of the adjustment screw 201 is fixedly connected to a hand wheel 202.

[0028] In the above technical scheme, by rotating the bottom end of the adjusting screw 201 and the price adjustment plate, when the hand wheel 202 is turned, the adjusting screw 201 is driven to screw in or out on the U-shaped mounting plate 5, the adjusting plate 11 can be driven to slide up and down in the slide groove 6, and the deformation stroke of the spring 10 between the accompanying plate 7 and the adjusting plate 11 can be released or compressed, thereby achieving the problem of adjusting the extrusion force. The utility model can adjust the extrusion force according to the different extrusion forces required by different types of PET films.

[0029] In the utility model, the scraper assembly 3 includes a group of extension plates 301, which are fixedly connected to the left end surface of the accompanying plate 7, and the group of extension plates 301 correspond to a group of connecting plates 8 respectively. A connecting shaft 302 is rotatably connected to the group of extension plates 301, and a hook-shaped scraper 303 is welded to the bottom of the connecting shaft 302. The blade of the hook-shaped scraper 303 can be tangent to the extrusion roller 9. A positioning bolt 304 is threadedly connected to the right end surface of the group of extension plates 301, and the right end of the positioning bolt 304 can abut against the connecting shaft 302.

[0030] In the above technical solution, by setting a hook-shaped scraper 303, when the hook-shaped scraper 303 is tangent to the extrusion roller 9, the dust or coating waste stuck on the extrusion roller 9 can be scraped off and collected in the hook-shaped scraper 303, thereby avoiding the influence of dust and coating waste on the PET film during the extrusion process.

[0031] In the present utility model, the front roller shafts of the squeezing roller 9 all pass through the surface of the U-shaped mounting plate 5, and the front roller shafts of the squeezing roller 9 pass through the surface of the U-shaped mounting plate 5, and the driving pulley 13 is connected to the part, and the motor 14 is installed on the rear end surface of the U-shaped mounting plate 5, and the output shaft of the motor 14 is fixedly connected to the rear roller shaft of the squeezing roller 9. The left and right sides of the notch 4 on the U-shaped frame 1 are rotatably connected to the feeding roller 15, and the front roller shafts of the feeding roller 15 all pass through the front end surface of the U-shaped frame 1, and the front roller shafts of the feeding roller 15 pass through the front end surface of the U-shaped frame 1. The driven pulley 16 is connected to the driving pulley 13 through the belt 17.

[0032] In the above technical solution, by setting up a motor 14, the rotation of the motor 14 can drive the supporting roller 12 to rotate. The rotation of the supporting roller 12 can utilize the active pulley 13 to drive the driven pulley 16 to rotate through the belt 17, thereby driving the feed roller 15 to rotate, thereby conveying the PET film.

[0033] The working principle of the film-extrusion and bubble-proofing device for PET film of the utility model is as follows:

[0034] When in use, the motor 14 rotates to drive the feeding roller 15 and the supporting roller 12 to continuously convey the PET film. When the PET film passes between the squeezing roller 9 and the supporting roller 12, the spring 10 applies a downward elastic force to the accompanying plate 7, and applies a downward force to the squeezing roller 9, so as to squeeze the PET film to remove bubbles.

[0035] When the hand wheel 202 is turned to drive the adjusting screw 201 to be screwed in or out on the U-shaped mounting plate 5, the adjusting plate 11 can be driven to slide up and down in the slide groove 6, and the deformation stroke of the spring 10 between the accompanying plate 7 and the adjusting plate 11 can be released or compressed, thereby achieving the problem of adjusting the size of the extrusion force, so that the utility model can adjust the extrusion force according to the different sizes of the extrusion force required by different types of PET films;

[0036] During the extrusion process, the hook-shaped cutter and the extrusion roller 9 continuously rotate and tangentially move, so that the dust or coating waste stuck on the extrusion roller 9 can be scraped off and collected in the hook-shaped scraper 303, thereby avoiding the influence of dust and coating waste on the PET film during the extrusion process.

[0037] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A PET film film outlet anti-bubble extrusion device, characterized in that: The invention comprises a U-shaped frame (1), wherein a notch (4) is provided in the center of both the front and rear walls of the U-shaped frame (1), an inverted U-shaped mounting plate (5) is provided at the position of the notch (4), and sliding grooves (6) are provided on the opposite surfaces of the U-shaped mounting plate (5), a travelling plate (7) is slidably connected between the sliding grooves (6), a group of connecting plates (8) is provided at the bottom of the travelling plate (7), and a squeezing roller (9) is rotatably connected between the connecting plates (8), a plurality of springs (10) are fixedly connected to the top of the travelling plate (7), and an adjusting plate (11) is fixedly connected to the top of the plurality of springs (10), and both ends of the adjusting plate (11) are slidably connected in the sliding grooves (6), an adjusting component (2) is provided on the U-shaped mounting plate (5), and the adjusting component (2) is rotatably connected to the adjusting plate (11), and a scraper component (3) is provided on the left side of the travelling plate (7).

2. The device for preventing bubbles from squeezing out a PET film according to claim 1, characterized in that: The inner bottom of the U-shaped mounting plate (5) is also rotatably connected to a supporting roller (12), and the supporting roller (12) is located directly below the squeezing roller (9).

3. The device for preventing bubbles from squeezing out a PET film according to claim 1, characterized in that: The adjustment assembly (2) comprises an adjustment screw (201), wherein the adjustment screw (201) is threadedly connected to the top center of the U-shaped mounting plate (5), the bottom end of the adjustment screw (201) is rotatably connected to the adjustment plate (11), and the bottom end of the adjustment screw (201) is fixedly connected to a hand wheel (202).

4. The device for preventing bubbles from squeezing out a PET film according to claim 1, characterized in that: The scraper assembly (3) comprises a group of extension plates (301), wherein the group of extension plates (301) are fixedly connected to the left end surface of the accompanying plate (7), and the group of extension plates (301) respectively correspond to a group of connecting plates (8), a group of extension plates (301) are rotatably connected to a connecting shaft (302), a hook-shaped scraper (303) is welded to the bottom of the connecting shaft (302), and the blade of the hook-shaped scraper (303) can be tangent to the squeezing roller (9), and a positioning bolt (304) is threadedly connected to the right end surface of the group of extension plates (301), and the right end of the positioning bolt (304) can abut against the connecting shaft (302).

5. The device for preventing bubbles from squeezing out a PET film according to claim 2, characterized in that: The front roller shafts of the squeezing rollers (9) all pass through the surface of the U-shaped mounting plate (5), and the portion of the roller shafts at the front end of the squeezing rollers (9) that pass through the surface of the U-shaped mounting plate (5) is connected to a driving pulley (13), and a motor (14) is installed on the rear end surface of the U-shaped mounting plate (5), and the output shaft of the motor (14) is fixedly connected to the rear end roller shaft of the squeezing roller (9).

6. The device for preventing bubbles from squeezing out a PET film according to claim 5, characterized in that: The left and right sides of the notch (4) on the U-shaped frame (1) are rotatably connected with feeding rollers (15), the front roller shafts of the feeding rollers (15) pass through the front end surface of the U-shaped frame (1), and the front roller shafts of the feeding rollers (15) pass through the front end surface of the U-shaped frame (1) and are connected to driven pulleys (16), and the driven pulleys (16) are respectively connected to the driving pulleys (13) through belts (17).

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