A production device and method for a pet composite material

Abstract

This invention relates to the field of composite material production equipment, specifically a PET composite material production equipment and preparation method, comprising a base plate, a glue tank, mounting seats, glue scrapers, a glue receiving box, and a U-shaped plate; a feeding roller a is mounted on an unwinding frame a, a feeding roller b is mounted on an unwinding frame b, two sets of composite rollers are mounted on a composite frame, and a winding assembly is mounted on a winding frame; a glue coating assembly is mounted on the glue tank; two sets of mounting seats are respectively mounted on the inner walls of both sides of a U-shaped frame; two sets of glue scrapers are respectively mounted on the two sets of mounting seats, and each set of glue scrapers has a glue scraping groove; the glue receiving box is located below the glue scrapers, and a glue guiding hose is provided at the bottom of the glue receiving box, which is connected to the glue tank; the U-shaped plate is mounted on the mounting seats, and drying devices are provided on the top and bottom inner walls of the U-shaped plate. In this invention, the thicker glue on both sides of the PET substrate is scraped off by the glue scrapers, which can avoid the composite quality problems caused by excessive glue on both sides of the PET substrate and reduce glue waste.

Description

Technical Field

[0001] This invention relates to the field of composite material production equipment, and more particularly to a PET composite material production equipment and preparation method. Background Technology

[0002] PET is polyethylene terephthalate, a polymer derived from the dehydration condensation reaction of polyethylene terephthalate, which in turn is obtained from the esterification reaction of terephthalic acid and ethylene glycol. With the rise of composite materials and PET, composite materials containing PET are becoming increasingly widely used. One dry lamination process in composite material production involves applying adhesive to the surface of a coating material, drying it, and then bonding it to other materials. Currently, anilox rollers are commonly used for adhesive application in dry PET composite production. However, anilox rollers tend to produce a thicker adhesive layer at the edges of the substrate, especially with spiral anilox rollers, where this problem is unavoidable. Thicker adhesive at the edges results in waste and can negatively impact the quality of the final laminated product. Summary of the Invention

[0003] The purpose of this invention is to address the problem of thick adhesive layers at the edges of coated substrates in the prior art by proposing a PET composite material production device and preparation method.

[0004] On the one hand, the present invention proposes a PET composite material production device, including a base plate, a glue tank, a mounting base, a glue scraper, a glue receiving box, and a return plate;

[0005] From left to right, the base plate is provided with unwinding frame a, U-shaped frame, unwinding frame b, composite frame and rewinding frame. Unwinding frame a is rotatably equipped with unloading roller a, and PET substrate is wound on unloading roller a. Unwinding frame b is rotatably equipped with unloading roller b, and composite substrate is wound on unloading roller b. Two sets of composite rollers are arranged side by side on the composite frame. Rewinding frame is equipped with rewinding assembly.

[0006] The glue tank is mounted on the base plate between the unwinding frame a and the U-shaped frame. The glue tank is equipped with a glue application assembly for applying glue to the bottom surface of the PET substrate. Two sets of mounting seats are provided, each mounted on one of the inner walls of the U-shaped frame. Two sets of glue scrapers are also provided, each mounted on one of the two sets of mounting seats. Each set of glue scrapers has a glue scraping groove, into which the PET substrate is inserted from both sides. A glue receiving box is mounted on the mounting seat below the glue scrapers. The receiving box has an opening at the top and a flexible glue guide tube at the bottom, which connects to the glue tank. A glue pump and a shut-off assembly are mounted on the flexible glue guide tube. A U-shaped plate is mounted on the mounting seat. Drying devices are installed on the top and bottom inner walls of the U-shaped plate, with two sets of drying devices located on the top and bottom sides of the PET substrate, respectively.

[0007] Preferably, a tensioning frame is provided on the base plate, the tensioning frame is located between the glue tank and the U-shaped frame, and a tensioning roller is rotatably mounted on the tensioning frame. The tensioning roller is arranged longitudinally and is located above and in contact with the PET substrate.

[0008] Preferably, the winding assembly includes a winding roller and a motor b; the winding roller is rotatably mounted on the winding frame, and the PET substrate and the composite substrate are wound onto the winding roller after being laminated by the composite roller; the motor b is mounted on the winding frame and drives the winding roller to rotate.

[0009] Preferably, the glue application assembly includes a support plate, an extrusion roller, an anilox roller, and a motor a; the support plate is vertically mounted on the top of the glue tank, and two sets of support plates are provided; the extrusion roller and the anilox roller are both rotatably mounted on the two sets of support plates, the extrusion roller is located above the PET substrate and in contact with the PET substrate, the anilox roller is located below the PET substrate and in contact with the PET substrate, and the bottom of the anilox roller extends into the glue tank and is immersed in the glue; the motor a is mounted on the support plate, and the motor a drives the anilox roller to rotate.

[0010] Preferably, a glue-adding mechanism is provided on the base plate, which is used to replenish glue into the glue tank.

[0011] Preferably, multiple sets of glue guiding holes are vertically arranged on the bottom wall of the glue scraper, and the glue guiding holes form an opening on the lower end face of the glue scraper block. The lower end face of the glue scraper block is an inclined surface, and the highest point of the inclined surface is located on the inner wall of the U-shaped frame.

[0012] Preferably, the switching assembly includes a fixed plate a, a fixed plate b, a telescopic device, and a clamping plate; a longitudinal plate is provided on the inner wall of the U-shaped frame, and the adhesive guiding hose passes through the longitudinal plate; both fixed plate a and fixed plate b are located at the bottom of the longitudinal plate; the telescopic device is located on the fixed plate b, and the telescopic end of the telescopic device is connected to the clamping plate; the clamping plate is slidably located at the bottom of the longitudinal plate, and the sliding direction of the clamping plate is towards or away from the fixed plate a; the adhesive guiding hose is located between the fixed plate a and the clamping plate.

[0013] On the other hand, the present invention proposes a method for preparing a PET composite material production device, comprising the following steps: S1, power is turned on, the winding assembly and the coating assembly are started, and the winding assembly drives the PET substrate and the composite substrate to move; S2, the coating assembly coats the bottom surface of the PET substrate with adhesive; S3, the PET substrate scrapes off a portion of the thicker adhesive at the edges through two sets of adhesive scraping grooves; S4, the PET substrate dries the adhesive through drying devices on the upper and lower sides; S5, the PET substrate and the composite substrate are wound onto the winding roller after being laminated by the composite roller.

[0014] Compared with the prior art, the present invention has the following beneficial technical effects: the thick glue on both sides of the PET substrate is scraped off by the glue scraper, and the scraped glue drips down the glue scraper into the glue receiving box, and then is pumped into the glue tank for use by the glue pump. This can not only avoid the composite quality problem caused by the glue being too thick on both sides of the PET substrate, but also reduce glue waste. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of one embodiment of the present invention;

[0016] Figure 2 for Figure 1 Side view (right side);

[0017] Figure 3 for Figure 1 Side view (left side);

[0018] Figure 4 for Figure 3 Enlarged diagram of point A in the diagram;

[0019] Reference numerals: 1. Base plate; 2. Unwinding frame a; 3. Unwinding roller a; 4. PET substrate; 5. Glue tank; 6. Support plate; 7. Extrusion roller; 8. Anilox roller; 9. Motor a; 10. Tensioning frame; 11. Tensioning roller; 12. U-shaped frame; 13. Mounting base; 14. Glue scraper block; 15. Glue scraper groove; 16. Glue guide hole; 17. Glue receiving box; 18. Glue guide hose; 19. Fixing plate a; 20. Fixing plate b; 21. Telescopic device; 22. Clamping plate; 23. Glue pump; 24. Retractable plate; 25. Drying device; 26. Unwinding frame b; 27. Unwinding roller b; 28. Composite substrate; 29. ​​Composite frame; 30. Composite roller; 31. Rewinding frame; 32. Rewinding roller; 33. Motor b. Detailed Implementation

[0020] Example 1

[0021] The present invention proposes a PET composite material production device, which includes a base plate 1, a glue tank 5, a mounting base 13, a glue scraper 14, a glue receiving box 17, and a return plate 24.

[0022] like Figure 1As shown, from left to right, the base plate 1 is provided with an unwinding frame a2, a U-shaped frame 12, an unwinding frame b26, a composite frame 29, and a take-up frame 31. An unwinding roller a3 is rotatably mounted on the unwinding frame a2, on which PET substrate 4 is wound. An unwinding roller b27 is rotatably mounted on the unwinding frame b26, on which composite substrate 28 is wound. Two sets of composite rollers 30 are arranged side-by-side on the composite frame 29. A take-up assembly is provided on the take-up frame 31. A tensioning frame 10 is provided on the base plate 1, located between the glue tank 5 and the U-shaped frame 12. A tensioning roller 11 is rotatably mounted on the tensioning frame 10, arranged longitudinally, positioned above and in contact with the PET substrate 4. The glue tank 5 is located on the base plate 1, between the unwinding frame a2 and the U-shaped frame 12, and is equipped with an adhesive applicator for applying adhesive to the bottom surface of the PET substrate 4.

[0023] like Figure 2-4 As shown, two sets of mounting bases 13 are provided, and the two sets of mounting bases 13 are respectively set on the inner walls of both sides of the U-shaped frame 12; two sets of glue scraper blocks 14 are provided, and the two sets of glue scraper blocks 14 are respectively set on the two sets of mounting bases 13. Each set of glue scraper blocks 14 is provided with a glue scraper groove 15. The PET substrate 4 is inserted into the two sets of glue scraper grooves 15 from both sides. Multiple sets of glue guiding holes 16 are vertically provided on the bottom wall of the glue scraper groove 15. The glue guiding holes 16 form an opening on the lower end face of the glue scraper block 14. The lower end face of the glue scraper block 14 is an inclined surface, and the highest point of the inclined surface is located on the inner wall of the U-shaped frame 12; the glue receiving box 17 is provided on the mounting base 13 and located below the glue scraper blocks 14. The glue receiving box 17 is open at the top and a glue guiding hose 18 is provided at the bottom of the glue receiving box 17. The glue guiding hose 18 is connected to the glue tank 5. A glue pump 23 is provided on the glue guiding hose 18. A switch component is provided on the glue guiding hose 18.

[0024] like Figure 1 As shown, the U-shaped plate 24 is mounted on the mounting base 13. Drying devices 25 are provided on the top and bottom inner walls of the U-shaped plate 24. The two sets of drying devices 25 are located on the upper and lower sides of the PET substrate 4, respectively.

[0025] Working principle: When the power is turned on, the winding assembly and the gluing assembly start. The winding assembly moves the PET substrate 4 and the composite substrate 28. The gluing assembly applies glue to the bottom surface of the PET substrate 4. Then, the PET substrate 4 is scraped off a portion of the thicker glue at the edges by two sets of glue scraper grooves 15. Next, the PET substrate 4 is dried by the drying devices 25 on the upper and lower sides. Finally, the PET substrate 4 and the composite substrate 28 are laminated by the laminating roller 30 and then wound onto the winding roller 32. In this embodiment, the thicker glue on both sides of the PET substrate 4 is scraped off by the glue scraper block 14. The scraped glue drips down the glue scraper block 14 into the glue receiving box 17, and is then pumped into the glue tank 5 by the glue pump 23 for use. This avoids the lamination quality problem caused by excessive glue on both sides of the PET substrate 4 and reduces glue waste.

[0026] Example 2

[0027] like Figure 1 As shown, the PET composite material production apparatus proposed in this invention, compared to Embodiment 1, includes a winding assembly comprising a winding roller 32 and a motor b33. The winding roller 32 is rotatably mounted on a winding frame 31. The PET substrate 4 and the composite substrate 28 are wound onto the winding roller 32 after being composited by the composite roller 30. The motor b33 is mounted on the winding frame 31 and drives the winding roller 32 to rotate. The rotation of the winding roller 32 by the motor b33 can both complete the winding operation and provide traction force.

[0028] Example 3

[0029] like Figure 1 As shown, the PET composite material production apparatus proposed in this invention, compared to Embodiment 1, includes a coating assembly comprising a support plate 6, an extrusion roller 7, an anilox roller 8, and a motor a9. The support plate 6 is vertically mounted on the top of the glue tank 5, and two sets of support plates 6 are provided. The extrusion roller 7 and the anilox roller 8 are rotatably mounted on the two sets of support plates 6. The extrusion roller 7 is located above and in contact with the PET substrate 4, while the anilox roller 8 is located below and in contact with the PET substrate 4. The bottom of the anilox roller 8 extends into the glue tank 5 and is immersed in the glue. The motor a9 is mounted on the support plate 6 and drives the anilox roller 8 to rotate. A glue adding mechanism is provided on the base plate 1 to replenish glue into the glue tank 5.

[0030] In this embodiment, motor a9 drives the anilox roller 8 to rotate, which applies the glue in the glue tank 5 to the bottom surface of the PET substrate 4. The amount of glue applied can be controlled by adjusting the rotation speed of the anilox roller 8.

[0031] Example 4

[0032] like Figure 2 As shown, the PET composite material production apparatus proposed in this invention, compared with Embodiment 1, includes a switching component comprising a fixed plate a19, a fixed plate b20, a telescopic device 21, and a clamping plate 22; a longitudinal plate is provided on the inner wall of the U-shaped frame 12, through which the adhesive guiding hose 18 passes; both the fixed plate a19 and the fixed plate b20 are located at the bottom of the longitudinal plate; the telescopic device 21 is located on the fixed plate b20, and the telescopic end of the telescopic device 21 is connected to the clamping plate 22; the clamping plate 22 is slidably located at the bottom of the longitudinal plate, and the sliding direction of the clamping plate 22 is towards or away from the fixed plate a19; the adhesive guiding hose 18 is located between the fixed plate a19 and the clamping plate 22.

[0033] In this embodiment, the telescopic device 21 drives the clamping plate 22 to move, which can clamp the glue guiding hose 18 to achieve a valve-like effect. The glue pump 23 is periodically operated by the external control system to pump the glue accumulated in the glue receiving box 17 into the glue tank 5, so as to achieve recycling and reduce glue waste.

[0034] Example 5

[0035] The method for preparing PET composite materials based on the above embodiment of a PET composite material production apparatus includes the following steps:

[0036] S1. When the power is turned on, the winding assembly and the coating assembly start, and the winding assembly drives the PET substrate 4 and the composite substrate 28 to move.

[0037] S2. The adhesive coating assembly applies adhesive to the bottom surface of the PET substrate 4.

[0038] S3, the PET substrate 4 uses two sets of scraper grooves 15 to scrape off a portion of the thicker adhesive at the edges;

[0039] S4, the PET substrate 4 is dried by the drying devices 25 on the upper and lower sides;

[0040] S5, PET substrate 4 and composite substrate 28 are laminated by composite roller 30 and then wound onto take-up roller 32.

[0041] In this embodiment, the thicker adhesive on both sides of the PET substrate 4 is scraped off by the scraper block 14. The scraped adhesive drips down the scraper block 14 into the glue collection box 17, and is then pumped into the glue tank 5 by the glue pump 23 for use. This can avoid the composite quality problem caused by excessive adhesive on both sides of the PET substrate 4, and also reduce glue waste.

[0042] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A PET composite material production apparatus, characterized in that, Includes base plate (1), glue tank (5), mounting base (13), glue scraper (14), glue receiving box (17) and U-shaped plate (24); The base plate (1) is arranged from left to right as follows: unwinding frame a (2), U-shaped frame (12), unwinding frame b (26), composite frame (29) and winding frame (31). Unwinding frame a (2) is rotatably equipped with unwinding roller a (3), and PET substrate (4) is wound on unwinding roller a (3). Unwinding frame b (26) is rotatably equipped with unwinding roller b (27), and composite substrate (28) is wound on unwinding roller b (27). Two sets of composite rollers (30) are arranged side by side on composite frame (29). Winding frame (31) is equipped with winding assembly. The glue tank (5) is set on the base plate (1) and located between the unwinding frame a (2) and the U-shaped frame (12). The glue tank (5) is equipped with a glue applicator for applying glue to the bottom surface of the PET substrate (4). Two sets of mounting seats (13) are set on the inner walls of both sides of the U-shaped frame (12). Two sets of glue scrapers (14) are set on the two sets of mounting seats (13). Each set of glue scrapers (14) is equipped with a glue scraper groove (15). The two sides of the PET substrate (4) are inserted into the two sets of glue scraper grooves (15). The glue receiving box (17) is set on the mounting base (13) and located below the glue scraper (14). The top of the glue receiving box (17) is open, and the bottom of the glue receiving box (17) is provided with a glue guiding hose (18). The glue guiding hose (18) is connected to the glue tank (5). The glue guiding hose (18) is provided with a glue pump (23) and a switch assembly. The U-shaped plate (24) is set on the mounting base (13). The top and bottom inner walls of the U-shaped plate (24) are provided with drying devices (25). The two sets of drying devices (25) are located on the upper and lower sides of the PET substrate (4) respectively. Multiple sets of glue guiding holes (16) are vertically arranged on the bottom wall of the glue scraper (15). The glue guiding holes (16) form an opening on the lower end face of the glue scraper (14). The lower end face of the glue scraper (14) is an inclined surface, and the highest point of the inclined surface is located on the inner wall of the U-shaped frame (12).

2. The PET composite material production apparatus according to claim 1, characterized in that, A tensioning frame (10) is provided on the base plate (1). The tensioning frame (10) is located between the glue tank (5) and the U-shaped frame (12). A tensioning roller (11) is rotatably provided on the tensioning frame (10). The tensioning roller (11) is arranged longitudinally and is located above the PET substrate (4) and in contact with the PET substrate (4).

3. The PET composite material production apparatus according to claim 1, characterized in that, The winding assembly includes a winding roller (32) and a motor b (33); the winding roller (32) is rotatably mounted on the winding frame (31), and the PET substrate (4) and the composite substrate (28) are wound on the winding roller (32) after being composited by the composite roller (30). The motor b (33) is mounted on the winding frame (31) and drives the winding roller (32) to rotate.

4. The PET composite material production apparatus according to claim 1, characterized in that, The glue application assembly includes a support plate (6), an extrusion roller (7), an anilox roller (8), and a motor a (9). The support plate (6) is vertically mounted on the top of the glue tank (5), and two sets of support plates (6) are provided. The extrusion roller (7) and the anilox roller (8) are both rotatably mounted on the two sets of support plates (6). The extrusion roller (7) is located above the PET substrate (4) and in contact with the PET substrate (4). The anilox roller (8) is located below the PET substrate (4) and in contact with the PET substrate (4). The bottom of the anilox roller (8) extends into the glue tank (5) and is immersed in the glue. The motor a (9) is mounted on the support plate (6), and the motor a (9) drives the anilox roller (8) to rotate.

5. The PET composite material production apparatus according to claim 4, characterized in that, A glue-adding mechanism is provided on the base plate (1) to add glue to the glue tank (5).

6. The PET composite material production apparatus according to claim 1, characterized in that, The switching assembly includes a fixed plate a (19), a fixed plate b (20), a telescopic device (21), and a clamping plate (22); a longitudinal plate is provided on the inner wall of the U-shaped frame (12), and a guide hose (18) passes through the longitudinal plate. Both the fixed plate a (19) and the fixed plate b (20) are located at the bottom of the longitudinal plate; the telescopic device (21) is located on the fixed plate b (20), and the telescopic end of the telescopic device (21) is connected to the clamping plate (22). The clamping plate (22) is slidably located at the bottom of the longitudinal plate, and the sliding direction of the clamping plate (22) is closer to or farther from the fixed plate a (19). The guide hose (18) is located between the fixed plate a (19) and the clamping plate (22).

7. A method for preparing a PET composite material production apparatus according to claim 1, characterized in that, Includes the following steps: S1. When the power is turned on, the winding assembly and the coating assembly start up. The winding assembly drives the PET substrate (4) and the composite substrate (28) to move. S2. The adhesive coating assembly applies adhesive to the bottom surface of the PET substrate (4); S3, PET substrate (4) scrapes off a portion of the thicker glue at the edge through two sets of glue scraper grooves (15); S4, the PET substrate (4) is dried by the drying devices (25) on the upper and lower sides; S5, PET substrate (4) and composite substrate (28) are combined by composite roller (30) and then wound onto take-up roller (32).

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