A BOPP film stretching, unloading, and cleaning mechanism

Abstract

This invention discloses a BOPP film stretching and unloading cleaning mechanism, belonging to the field of film cleaning technology. It includes a support base and guide rollers mounted on both sides of its upper surface for conveying BOPP film. A C-shaped mounting frame is also fixedly mounted on the upper surface of the support base, with grooves on both the upper and lower sides of the mounting frame. A sliding plate is slidably connected to one side of each groove, and a brush plate is connected to the other side of the sliding plate via a pneumatic extrusion mechanism. Brush bristles are distributed on the opposing sides of the two brush plates. This invention not only removes debris by the relative movement of the BOPP film and the brush bristles on the brush plates, but also enables the brush plates to drive the brush bristles to reciprocate in a direction perpendicular to the movement of the BOPP film, thereby improving the debris removal effect. Furthermore, during the reciprocating movement, the brush bristles are affected by the jet gas, which helps reduce the debris adsorbed on the bristles, thus ensuring the effective removal of debris.

Description

Technical Field

[0001] This invention relates to the field of film cleaning technology, specifically to a BOPP film stretching and unloading cleaning mechanism. Background Technology

[0002] BOPP film production involves extrusion, casting, longitudinal stretching, and transverse stretching. During the high-temperature stretching process, film breakage and stringing are likely to occur at the film edges. At the same time, equipment friction or raw material impurities can cause debris to adhere. If not cleaned in time, these contaminants will affect the film's transparency, flatness, and the yield of subsequent printing, lamination, and other processes.

[0003] The BOPP film stretching and unloading cleaning mechanism is a mechanism that cleans up debris during the BOPP film stretching and unloading process, which can reduce the impact of contaminants on the film.

[0004] In existing BOPP film stretching and unloading cleaning mechanisms, the structure for brushing away debris is fixed during use. The debris is removed only by the relative movement between the BOPP film and the brush. For example, the BOPP film stretching and unloading cleaning device disclosed in CN216026475U only removes impurities from the film by moving the film relative to the fixed cleaning brush. This method is not effective in removing debris and impurities and can easily reduce the yield rate.

[0005] In addition, as the existing BOPP film stretching and unloading cleaning mechanism is used for a longer period of time, more and more debris will be generated on the cleaning brush, which is not conducive to ensuring the effect of subsequent debris removal.

[0006] Therefore, a BOPP film stretching, unloading, and cleaning mechanism is needed to solve the above problems. Summary of the Invention

[0007] The purpose of this invention is to provide a BOPP film stretching and unloading cleaning mechanism to solve the problem mentioned in the background art that the existing BOPP film stretching and unloading cleaning mechanism has poor debris removal effect during use.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A BOPP film stretching and unloading cleaning mechanism includes a support base and guide rollers mounted on both sides of its upper surface for conveying BOPP film. A C-shaped mounting frame is also fixedly mounted on the upper surface of the support base, and the upper and lower sides of the mounting frame are provided with sliding grooves. A sliding plate is slidably connected to one side of each sliding groove, and a brush plate is connected to the other side of the sliding plate through a pneumatic extrusion mechanism. Brush bristles are distributed on the opposing sides of the two brush plates. A dust suction pipe is fixedly connected to the mounting frame, and the dust suction pipe is connected to the mounting frame through a dust suction mechanism. The dust suction mechanism is connected to the brush plate through a reciprocating mechanism.

[0010] Preferably, the pneumatic extrusion mechanism includes piston tubes distributed at equal angles on the other side of the sliding plate, and one end of a piston block is seamlessly slidably connected inside the open end of the piston tube. The other end of the piston block is fixedly connected to the brush plate, and a spring nested on the outside of the corresponding piston block is provided between the brush plate and the piston tube.

[0011] Preferably, the dust collection mechanism includes a servo motor mounted on a support base. The dust collection pipe has an inner groove, and one side of the inner groove is connected to one end of the rotating shaft of the fan blade assembly. The other end of the rotating shaft of the fan blade assembly is sequentially connected to the other side of the inner groove and one end of the dust collection pipe. The fan blade assembly includes fan blades mounted on the rotating shaft to generate suction. One end of the rotating shaft of the fan blade assembly is also connected to the servo motor via a belt drive structure. The support base houses an adsorption box, and the adsorption box is provided with a limiting block that engages with the support base. The support base has a slot for engaging with the limiting block to position the adsorption box. The other end of the dust collection pipe is connected to one end of a dust guide pipe, and the other end of the dust guide pipe is threadedly connected to the support base and the adsorption box.

[0012] Preferably, the dust collection mechanism further includes dust collection chambers disposed at the upper and lower ends of the mounting frame, and dust collection ports that pass through to the corresponding dust collection chambers are provided on both the upper and lower sides of the mounting frame. One end of the dust collection pipe is provided with two strip channels that are respectively connected to the two dust collection chambers to generate suction at the dust collection ports.

[0013] Preferably, the suction port is tilted towards the brush bristles, and the minimum distance between two strip suction ports at the same height is greater than the maximum width of the sliding plate, so as to avoid the sliding plate blocking the suction port and preventing the suction port from absorbing dust.

[0014] Preferably, the reciprocating mechanism includes support tubes on both the upper and lower sides of the mounting frame. Each support tube has three through-holes extending through its inner and outer sides at equal angles at the end near the suction pipe. A limiting hole coaxial with the suction pipe is also provided at the end of the support tube near the suction pipe, and the tail end of a piston column extends movably into the limiting hole. Three protrusions penetrating the three through-holes are provided on the outer side of the middle portion of the piston column, and the upper end of a connecting frame is connected to the outer side of the three protrusions. The outer end of the connecting frame is an annular structure, coaxial with the piston column. Two rollers are bearing-connected to the inner end of each connecting frame, and a sliding actuating plate is engaged between the two rollers. The actuating plate is a twisted disc-shaped structure used to drive the connecting frame to reciprocate when the actuating plate rotates, in conjunction with the rollers. The actuating plate is fixedly mounted on the other end of the rotating shaft on the fan blade assembly. The inner ends of the two connecting frames are respectively fixedly connected to one side of two sliding plates.

[0015] Preferably, the reciprocating mechanism further includes a piston column head end that is seamlessly slidably connected to the inner side of the other end of the support tube near the sliding plate, and a one-way air inlet is provided at an equal angle on the other end of the support tube near the sliding plate. An air guide pipe is connected through the other end of the support tube near the sliding plate, and the air guide pipe is disposed between the sliding plate and the brush plate. A branch pipe is provided on the air guide pipe for communicating with the corresponding piston tube.

[0016] Preferably, the brush plate has an air collection chamber inside, and a strip-shaped air jet port extending through the air collection chamber is provided on the side of the brush plate where the bristles are located.

[0017] Preferably, the piston block is provided with a groove that runs through the piston tube and the gas collection chamber, and the inner diameter of the groove is not greater than 1 / 2 of the inner diameter of the branch pipe on the gas guide tube, and the inner diameter of the gas guide tube is the same as the inner diameter of the branch pipe on it.

[0018] Preferably, the air guide tube has a U-shaped structure, and the inner diameter of the part where the air guide tube connects to the support tube is the same as the inner diameter of the air guide tube, ensuring that the amount of gas entering the air guide tube per unit time is the same as the amount of gas discharged from the air guide tube to the piston tube.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: This BOPP film stretching and unloading cleaning mechanism can not only remove debris by the relative movement of the BOPP film and the bristles on the brush plate, but also enable the brush plate to drive the bristles to reciprocate in a direction perpendicular to the movement of the BOPP film, thereby helping to improve the debris removal effect. In addition, during the reciprocating movement, the bristles are affected by the jet gas, which helps to reduce the debris adsorbed on the bristles, thus ensuring the effectiveness of the bristles in removing debris.

[0020] 1. During the operation of the servo motor, the fan blade assembly rotates, and its rotating shaft drives the actuating plate to rotate, which in turn causes the connecting frame to drive the corresponding sliding plate to move back and forth. During this process, the sliding plate drives the brush plate to move back and forth through the pneumatic extrusion mechanism, thereby improving the effect of brushing away debris.

[0021] 2. During the reciprocating movement of the connecting frame, the piston column will move synchronously back and forth. With the help of the one-way air inlet, the outside air can continuously enter the support tube, and then continuously enter the piston tube through the air guide tube, and then enter the air collection chamber through the piston block. Finally, it is sprayed onto the brush bristles from the jet nozzle, thereby reducing the debris adsorbed on the brush bristles and helping to ensure the brush bristles can effectively remove debris.

[0022] 3. During the process of gas entering the piston tube through the gas guide tube and then entering the gas collection chamber through the piston block, the amount of gas entering the piston tube per unit time is greater than the amount of gas entering the gas collection chamber per unit time. This results in positive pressure in the piston tube, causing the piston block to be pressed and drive the brush plate to move. This ensures that there is a certain pressure between the brush bristles and the BOPP film, which helps to improve the brush bristles' ability to remove debris. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the connection structure between the guide roller and the BOPP film of the present invention;

[0024] Figure 2 This is a schematic diagram of the main structure of the present invention;

[0025] Figure 3 This is a schematic diagram of the connection structure between the adsorption box and the mounting frame of the present invention;

[0026] Figure 4 This is a partial longitudinal section diagram of the mounting bracket of the present invention;

[0027] Figure 5 For the present invention Figure 4 Enlarged structural diagram of point A in the middle;

[0028] Figure 6 This is a partial cross-sectional view of the mounting bracket of the present invention;

[0029] Figure 7 For the present invention Figure 6 Enlarged structural diagram of point B;

[0030] Figure 8 This is a schematic diagram of the connection structure between the servo motor and the mounting bracket of the present invention;

[0031] Figure 9 For the present invention Figure 8 A magnified structural diagram of point C.

[0032] In the diagram: 1. Support base; 2. Guide roller; 3. Adsorption box; 4. Limiting block; 5. Dust suction pipe; 6. Mounting frame; 7. Servo motor; 8. Dust guide pipe; 9. Inner groove; 10. Sliding plate; 11. Dust suction chamber; 12. Piston tube; 13. Piston block; 14. Brush plate; 15. Air collection chamber; 16. Air jet nozzle; 17. Spring; 18. Air guide pipe; 19. Dust suction port; 20. Fan blade assembly; 21. Actuating plate; 22. Belt drive structure; 23. Support tube; 24. One-way air inlet; 25. Strip-shaped through hole; 26. Limiting hole; 27. Piston column; 28. Connecting frame; 29. ​​Roller; 30. Slide groove. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figures 1-9 The present invention provides the following technical solution:

[0035] Example 1: To address the problem that after prolonged use, the cleaning brush of a conventional BOPP film stretching and unloading cleaning mechanism tends to accumulate a large amount of debris, thus compromising the effectiveness of subsequent debris removal, the following technical solution is provided: A BOPP film stretching and unloading cleaning mechanism includes a support base 1 and guide rollers 2 mounted on both sides of its upper surface for conveying BOPP film. A C-shaped mounting frame 6 is also fixedly mounted on the upper surface of the support base 1. Slide grooves 30 are provided on both the upper and lower sides of the mounting frame 6. A sliding plate 10 is slidably connected to one side of each slide groove 30, and a brush plate 14 is connected to the other side of the sliding plate 10 via a pneumatic extrusion mechanism. Brush bristles are distributed on the opposing sides of the two brush plates 14. A suction pipe 5 is fixedly connected to the mounting frame 6, and the suction pipe 5 is connected to the mounting frame 6 via a suction mechanism.

[0036] The pneumatic extrusion mechanism includes piston tubes 12 evenly distributed on the other side of the sliding plate 10, and one end of a piston block 13 is seamlessly slidably connected to the open end of the piston tube 12. The other end of the piston block 13 is fixedly connected to the brush plate 14. A spring 17 is nested between the brush plate 14 and the piston tube 12, and is located on the outside of the corresponding piston block 13. An air collection chamber 15 is provided inside the brush plate 14, and a strip-shaped air jet port 16 extending to the air collection chamber 15 is opened on the side of the brush plate 14 with bristles. A groove is provided on the piston block 13 that extends through the piston tube 12 and the air collection chamber 15, and the inner diameter of the groove is not greater than 1 / 2 of the inner diameter of the branch pipe on the air guide pipe 18. The inner diameter of the air guide pipe 18 is the same as the inner diameter of its branch pipe. The air guide pipe 18 has a U-shaped structure. Furthermore, the inner diameter of the part where the air guide pipe 18 connects to the support pipe 23 is the same as the inner diameter of the air guide pipe 18, ensuring that the amount of gas entering the air guide pipe 18 per unit time is the same as the amount of gas discharged from the air guide pipe 18 to the piston pipe 12. During the process of gas entering the piston pipe 12 through the air guide pipe 18 and entering the gas collection chamber 15 through the piston block 13, the inner diameter of the groove provided on the piston block 13 is relatively small, which will cause the amount of gas entering the piston pipe 12 per unit time to be greater than the amount of gas entering the gas collection chamber 15 per unit time. This will cause positive pressure to be generated in the piston pipe 12, causing the piston block 13 to be pressed and drive the brush plate 14 to move. This ensures that there is a certain pressure between the brush bristles and the BOPP film, which helps to ensure the brush bristles remove dust effectively.

[0037] The vacuuming mechanism includes a servo motor 7 mounted on a support base 1. A groove 9 is provided on the vacuum pipe 5, and a bearing on one side of the groove 9 connects to one end of the rotating shaft of the fan blade assembly 20. The other end of the rotating shaft of the fan blade assembly 20 passes through the other side of the groove 9 and one end of the vacuum pipe 5. The fan blade assembly 20 includes fan blades mounted on the rotating shaft to generate suction. One end of the rotating shaft on the fan blade assembly 20 is also connected to the servo motor 7 via a belt drive structure 22. An adsorption box 3 is housed inside the support base 1, and a limiting block 4 is provided on the adsorption box 3 to engage with the support base 1. A slot is provided on the support base 1 for engaging with the limiting block 4, thereby positioning the adsorption box 3. One end of the vacuum pipe 5 is connected to a dust guide pipe 8, and the other end of the dust guide pipe 8 movably passes through the support base 1 and is threadedly connected to the adsorption box 3. The vacuuming mechanism also includes vacuum chambers 11 located in the upper and lower ends of a mounting frame 6, and each of the upper and lower sides of the mounting frame 6 has a corresponding... The dust suction port 19 of the dust suction chamber 11 has two strip channels at one end of the dust suction pipe 5, which are respectively connected to the two dust suction chambers 11 to generate suction at the dust suction port 19. The dust suction port 19 is tilted towards the brush bristles, and the minimum distance between the two strip dust suction ports 19 at the same height is greater than the maximum width of the sliding plate 10 to prevent the sliding plate 10 from blocking the dust suction port 19 and preventing the dust suction port 19 from being unable to absorb dust. During the operation of the servo motor 7, the rotating shaft on the fan blade assembly 20 is driven to rotate, thereby driving the fan blade assembly 20 to rotate. Rotating the actuating plate 21 causes the connecting frame 28, which is equipped with rollers 29, to reciprocate. This process causes the piston column 27 to reciprocate synchronously. In conjunction with the one-way air inlet 24, external air can continuously enter the support tube 23, then enter the piston tube 12 through the air guide tube 18, and then enter the air collection chamber 15 through the piston block 13. Finally, it is sprayed onto the brush bristles from the air jet 16, thereby reducing the debris adsorbed on the brush bristles and helping to ensure the brush bristles effectively remove debris.

[0038] Example 2: To solve the problem that the previous BOPP film stretching and unloading cleaning mechanism only relied on the relative movement of the film and the fixed cleaning brush to remove debris, resulting in poor debris removal effect, the following technical solution is provided: Specifically, the dust collection mechanism is connected to the brush plate 14 through a reciprocating mechanism.

[0039] The reciprocating mechanism includes support tubes 23 on both the upper and lower sides of the mounting frame 6. Three strip-shaped through holes 25, passing through both the inner and outer sides, are equally angled at the end of each support tube 23 near the suction pipe 5. A limiting hole 26, coaxial with the end of the support tube 23 near the suction pipe 5, is also provided. The tail end of a piston column 27 extends movably into the limiting hole 26. Three protrusions, passing through the three strip-shaped through holes 25, are provided on the outer side of the middle of the piston column 27. The upper end of a connecting frame 28 is connected to the outer side of the three protrusions. The outer end of the connecting frame 28 is an annular structure, coaxial with the piston column 27. Two rollers 29 are bearing-connected to the inner end of each connecting frame 28. A sliding actuating plate 21 is slidably engaged between the two rollers 29. The actuating plate 21 is a twisted disc-shaped structure used to drive the connecting frame 28 to reciprocate when the actuating plate 21 rotates, in conjunction with the rollers 29. The actuating plate 21 is fixedly mounted on the fan blade assembly. At the other end of the rotating shaft on component 20, the inner ends of the two connecting frames 28 are respectively fixedly connected to one side of the two sliding plates 10. The reciprocating mechanism also includes the first end of the piston column 27 which is seamlessly slidably connected to the inner side of the other end of the support tube 23 near the sliding plate 10. The other end of the support tube 23 near the sliding plate 10 is also provided with a one-way air inlet 24 at equal angles. The other end of the support tube 23 near the sliding plate 10 is connected to a guide pipe 18, which is located between the sliding plate 10 and the brush plate 14. A branch pipe is provided on the guide pipe 18 for connecting with the corresponding piston tube 12. When the servo motor 7 runs and drives the connecting frame 28 to reciprocate, it will drive the sliding plate 10 to move synchronously. The pneumatic extrusion mechanism can make the brush plate 14 reciprocate with the sliding plate 10, which can cause the brush plate 14 to reciprocate along a movement perpendicular to the BOPP film, thereby improving the effect of brushing away dust.

[0040] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A BOPP film stretching and unloading cleaning mechanism, comprising a support base (1) and guide rollers (2) mounted on both sides of its upper surface for conveying BOPP film, characterized in that: The upper surface of the support base (1) is also fixedly mounted with a C-shaped mounting bracket (6), and the upper and lower sides of the mounting bracket (6) are provided with sliding grooves (30). Each sliding groove (30) is slidably connected to one side of a sliding plate (10), and the other side of the sliding plate (10) is connected to a brush plate (14) through a pneumatic extrusion mechanism. Brush bristles are distributed on the opposite side of the two brush plates (14). A vacuum pipe (5) is fixedly connected to the mounting bracket (6), and the vacuum pipe (5) is connected to the mounting bracket (6) through a vacuuming mechanism. The vacuuming mechanism is connected to the brush plate (14) through a reciprocating mechanism. The pneumatic extrusion mechanism includes piston tubes (12) that are equally distributed on the other side of the sliding plate (10), and the opening of the piston tube (12) is... One end of a piston block (13) is seamlessly slidably connected to the inside of the mouth end. The other end of the piston block (13) is fixedly connected to the brush plate (14). A spring (17) nested on the outside of the corresponding piston block (13) is provided between the brush plate (14) and the piston tube (12). The reciprocating mechanism includes a support tube (23) provided on both the upper and lower sides inside the mounting frame (6). The support tube (23) near the suction tube (5) is provided with three strip-shaped through holes (25) that penetrate its inner and outer sides at equal angles. The support tube (23) near the suction tube (5) is also provided with a limiting hole (26) coaxial with it. The end of the piston column (27) extends movably into the limiting hole (26). The piston column (27) is provided with a through hole on the outer side of its middle part. Three protrusions pass through three strip-shaped through holes (25), and the upper end of a connecting frame (28) is connected to the outer side of the three protrusions. The outer end of the connecting frame (28) is a ring structure, and the ring structure is coaxially arranged with the piston column (27). Two rollers (29) are connected to the inner end of each connecting frame (28) by bearings, and a deflector plate (21) is slidably engaged between the two rollers (29). The deflector plate (21) is a twisted disc structure, which is used to drive the connecting frame (28) to move back and forth when the deflector plate (21) rotates, in conjunction with the rollers (29). The deflector plate (21) is fixedly set on the other end of the rotating shaft on the fan blade assembly (20). The inner ends of the two connecting frames (28) are respectively fixedly connected to one side of two sliding plates (10). The reciprocating mechanism also includes the piston column (27) head end which is seamlessly slidably connected to the inner side of the other end of the support tube (23) near the sliding plate (10), and the other end of the support tube (23) near the sliding plate (10) is also provided with a one-way air inlet (24) at equal angles. The other end of the support tube (23) near the sliding plate (10) is connected to a guide pipe (18), and the guide pipe (18) is located between the sliding plate (10) and the brush plate (14). The guide pipe (18) is provided with a branch pipe for communicating with the corresponding piston tube (12). The brush plate (14) is provided with an air collection chamber (15) inside, and the side of the brush plate (14) with bristles is provided with a strip-shaped jet nozzle (16) that extends to the air collection chamber (15).The piston block (13) is provided with a groove that runs through the piston tube (12) and the gas collection chamber (15). The inner diameter of the groove is no greater than 1 / 2 of the inner diameter of the upper branch pipe of the gas guide pipe (18). The inner diameter of the gas guide pipe (18) is the same as the inner diameter of its upper branch pipe. The gas guide pipe (18) has a U-shaped structure, and the inner diameter of the part where the gas guide pipe (18) connects to the support pipe (23) is the same as the inner diameter of the gas guide pipe (18), ensuring that the amount of gas entering the gas guide pipe (18) per unit time is the same as the amount of gas discharged from the gas guide pipe (18) to the piston tube (12).

2. The BOPP film stretching and unloading cleaning mechanism according to claim 1, characterized in that: The vacuuming mechanism includes a servo motor (7) mounted on a support base (1). The vacuum tube (5) has an inner groove (9), and one side of the inner groove (9) is connected to one end of the rotating shaft of the fan blade assembly (20). The other end of the rotating shaft of the fan blade assembly (20) is sequentially connected to the other side of the inner groove (9) and one end of the vacuum tube (5). The fan blade assembly (20) includes fan blades mounted on the rotating shaft to generate suction. One end of the rotating shaft on the fan blade assembly (20) is also connected to a belt. The transmission structure (22) is connected to the servo motor (7). The adsorption box (3) is installed inside the support base (1), and the adsorption box (3) is provided with a limiting block (4) that is engaged with the support base (1). The support base (1) is provided with a slot for engaging with the limiting block (4) to position the adsorption box (3). The other end of the suction pipe (5) is connected to one end of the dust guide pipe (8), and the other end of the dust guide pipe (8) is threaded through the support base (1) and the adsorption box (3).

3. The BOPP film stretching and unloading cleaning mechanism according to claim 2, characterized in that: The vacuuming mechanism also includes vacuum chambers (11) located at the upper and lower ends of the mounting frame (6), and vacuum ports (19) that pass through to the corresponding vacuum chambers (11) are provided on both the upper and lower sides of the mounting frame (6). One end of the vacuum pipe (5) is provided with two strip channels that are connected to the two vacuum chambers (11) respectively, so as to generate suction at the vacuum ports (19).

4. The BOPP film stretching and unloading cleaning mechanism according to claim 3, characterized in that: The suction port (19) is tilted towards the bristles, and the minimum distance between the two strip suction ports (19) at the same height is greater than the maximum width of the sliding plate (10) to avoid the sliding plate (10) blocking the suction port (19) and causing the suction port (19) to be unable to absorb dust.

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