Automatic scraper for film production

Abstract

The utility model provides an automatic scraper for thin film production, which is characterized in that a raw material melt is discharged from the upper part of thin film production equipment to a position between the scraper and a coating roller, is accumulated on an inclined plane at the front end of the scraper, enters a flow guide groove after a certain amount, is drained to a waste discharge port through a trapezoidal groove wall, and is communicated with a waste discharge pipe through a flange with a sealed end port; the air pressure generated by the centrifugal pump absorbs and removes the allowance on the surface of the scraper, and the problems that due to the fact that an existing scraper for film production is used for coating after raw material melt is accumulated and part of melt is cooled or contaminated with impurities, materials are distributed unevenly, and the performance of a film is affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of film production, in particular to an automatic scraper for film production. Background Art

[0002] Films are widely used in our production and life. They are used for packaging and as coating layers. They are widely used in the fields of food, medicine, chemical industry, etc. Coating technology is widely used in the production of paper and film, among which coating blades are the key technology of coating composite equipment. Coating blades are long strips with a certain curvature on the blade edge. They are used in coating machinery to apply a layer of glue, coating or ink with specific functions on materials such as paper, cloth, leather, aluminum foil, and plastic film. The coating equipment has uneven glue application during the working process, which requires a scraper blade to make the glue even. During the coating process, the raw material melt will accumulate on the scraper surface, and part of the melt will be coated after cooling or contaminated with impurities, making the material unevenly distributed and affecting the performance of the film product. Utility Model Content

[0003] The main purpose of the utility model is to provide an automatic scraper for film production, so as to solve the problem that the existing scrapers for film production cause uneven material distribution and affect film performance due to the accumulation and deterioration of raw material melt after coating.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: an automatic scraper for film production, an inclined surface is arranged at the front end of the scraper where the scraper contacts the raw material melt, a guide groove is arranged on the inclined surface, the guide groove is connected with the waste outlet, a flange is arranged in the middle of the rear end of the scraper, the waste outlet is connected with the waste outlet through the flange, and the waste outlet is connected with the centrifugal pump.

[0005] In a preferred embodiment, the guide groove is trapezoidal in cross section.

[0006] In a preferred embodiment, the height of the guide groove does not exceed 1 / 3 of the thickness of the scraper.

[0007] In the preferred embodiment, the scraper is fixedly connected to the lifting platform on both sides through connecting parts. The lifting platform is symmetrically arranged at the top of the screw of the first elevator and the second elevator. A reduction motor is arranged on one side of the first elevator. The output shaft of the reduction motor is clamped with one end of the worm in the first elevator. The second elevator is arranged on the other side of the scraper.

[0008] In the preferred embodiment, a coupling is provided on one side of the first elevator, one end of the worm passes through the first elevator box wall and is clamped with the coupling, and a coupling is provided on one side of the second elevator, and the connecting shaft is clamped with the couplings at both ends.

[0009] In the preferred embodiment, the first elevator and the second elevator have the same structure, and the transmission ratio between the worm wheel and the worm is 100-150.

[0010] In the preferred embodiment, the inclined surface at the front end of the scraper is 30-50 degrees to the plane of the blade back.

[0011] In a preferred embodiment, the scraper tip is provided with a rounded corner, and the radius of the rounded corner is 0.5-5 mm.

[0012] In a preferred embodiment, the two sides of the scraper are connected to the connecting member by bolts, and the number of the bolts is at least two.

[0013] In a preferred embodiment, the scraper is made of alloy tool steel, ceramic or plastic.

[0014] The utility model provides an automatic scraper for film production. Raw material melt is discharged from the top of film production equipment to between the scraper and the coating roller, and is accumulated on the inclined surface of the front end of the scraper. After a certain amount, it enters the guide groove, is drained to the waste outlet through the trapezoidal groove wall, is connected with the waste outlet through the flange sealed at the port, and the other end of the waste outlet is connected to the centrifugal pump. The air pressure generated by the centrifugal pump sucks off the excess on the scraper surface, so as to solve the problem that the raw material melt is deposited and deteriorated before coating, so that the material distribution is uneven, which affects the film performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0016] Figure 1 This is the front view of the scraper device of the utility model;

[0017] Figure 2 This is a rear view of the scraper device of the utility model;

[0018] Figure 3 This is an axonometric diagram of the scraper device of the utility model;

[0019] Figure 4 This is a top sectional view of the scraper of the utility model;

[0020] Figure 5 This is an axonometric sectional view of the scraper of the utility model;

[0021] Figure 6 This is a rear view structural diagram of the scraper lifting mechanism of the utility model;

[0022] Figure 7 This is a right view structural diagram of the scraper lifting mechanism of the utility model;

[0023] Figure 8 This is a structural diagram of the thin film production equipment of the utility model.

[0024] In the figure: reduction motor 1; first lift 2; connecting piece 3; scraper 4; waste pipe 5; second lift 6; coupling 7; connecting shaft 8; centrifugal pump 9; lifting platform 10; flange 11; coating roller 12; worm 201; worm wheel 202; screw 203; guide groove 401; waste outlet 402. DETAILED DESCRIPTION

[0025] like Figures 1 to 8 As shown, an automatic scraper for film production, the front end of the scraper 4 is provided with an inclined surface at the contact part with the raw material melt, the inclined surface is provided with a guide groove 401, the guide groove 401 is connected with the waste outlet 402, a flange 11 is provided in the middle of the rear end of the scraper 4, the waste outlet 5 passes through the flange 11 and is connected with the waste outlet 402, and the waste outlet 5 is connected with the centrifugal pump 9. The flange 11 makes the connection between the waste outlet 402 and the waste outlet 5 sealed to prevent the residual amount from leaking.

[0026] In a preferred embodiment, the guide groove 401 is trapezoidal in cross section, so that the excess melt is guided into the waste outlet 402 via the inclined surface.

[0027] In a preferred embodiment, the height of the guide groove 401 does not exceed 1 / 3 of the thickness of the scraper 4 to avoid affecting the rigidity of the scraper.

[0028] In the preferred embodiment, both sides of the scraper 4 are fixedly connected to the lifting platform 10 through the connecting piece 3, and the lifting platform 10 is symmetrically arranged at the top of the lead screw 203 of the first lift 2 and the second lift 6. A reduction motor 1 is arranged on one side of the first lift 2, and the output shaft of the reduction motor 1 is clamped with one end of the worm 20 in the first lift 2, and the second lift 6 is arranged on the other side of the scraper 4. The distance between the two ends of the scraper 4 is large, and the symmetrical arrangement of the connecting piece 3 is more secure.

[0029] In the preferred embodiment, a coupling 7 is provided on one side of the first elevator 2, one end of the worm 201 passes through the box wall of the first elevator 2 and is engaged with the coupling 7, a coupling 7 is provided on one side of the second elevator 6, and a connecting shaft 8 is engaged with the couplings 7 at both ends. A reduction motor 1 is used to synchronously control the first elevator 2 and the second elevator 6, so that the gap between the scraper 4 and the coating roller 12 is uniform in the length direction.

[0030] In the preferred embodiment, the first lifter 2 and the second lifter 6 have the same structure, and the transmission ratio of the worm wheel 202 to the worm 201 is 100 to 150, so that the lifting and lowering adjustment of the first lifter 2 and the second lifter 6 is more precise.

[0031] In the preferred embodiment, the angle between the front end inclined surface of the scraper 4 and the plane of the blade back is 30-50 degrees, so as to provide a slow contact surface for the raw material melt entering the coating gap between the scraper 4 and the coating roller 12.

[0032] In the preferred embodiment, the tip of the scraper 4 is rounded, and the radius of the rounded corner is 0.5-5 mm, so as to reduce the wear of the tip of the scraper 4.

[0033] In a preferred embodiment, the two sides of the scraper 4 are connected to the connecting member 3 by bolts, and the number of bolts is at least two, so as to prevent the scraper 4 from rotating around the bolt connection point.

[0034] In a preferred embodiment, the scraper 4 is made of alloy tool steel, ceramic or plastic.

[0035] When in use, the raw material melt is discharged from the top of the film production equipment to between the scraper 4 and the coating roller 12, and is accumulated on the inclined surface of the front end of the scraper 4. After accumulating a certain height, the excess is enough to enter the guide groove 401, and the excess is drained to the waste outlet 402 through the trapezoidal groove wall, and is connected to the waste outlet 402 through the flange 11. The other end of the waste outlet 5 is connected to the centrifugal pump 9. The air pressure generated by the centrifugal pump 9 sucks away the excess on the surface of the scraper 4, and the raw material melt passes through the gap between the scraper 4 and the coating roller 12 and is attached to the surface of the rotating coating roller 12. The reduction motor 1 synchronously controls the first elevator 2 and the second elevator 6 to drive the scraper 4 to rise and fall, and control the size of the gap between the scraper 4 and the coating roller 12, thereby adjusting the coating thickness.

[0036] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. An automatic scraper for film production, Its characteristics are: An inclined surface is provided at the front end of the scraper (4) in contact with the raw material melt, a guide groove (401) is provided on the inclined surface, the guide groove (401) is connected to the waste discharge port (402), a flange (11) is provided at the middle of the rear end of the scraper (4), a waste discharge pipe (5) passes through the flange (11) and is connected to the waste discharge port (402), and the waste discharge pipe (5) is connected to the centrifugal pump (9).

2. An automatic scraper for film production according to claim 1, Its characteristics are: The guide groove (401) is trapezoidal in cross section.

3. An automatic scraper for film production according to claim 1, Its characteristics are: The height of the guide groove (401) does not exceed 1 / 3 of the thickness of the scraper (4).

4. The automatic scraper for film production according to claim 1, Its characteristics are: The scraper (4) is fixedly connected to the lifting platform (10) on both sides via connecting pieces (3). The lifting platform (10) is symmetrically arranged at the top ends of the lead screws (203) of the first lift (2) and the second lift (6). A reduction motor (1) is arranged on one side of the first lift (2). The output shaft of the reduction motor (1) is clamped with one end of a worm (201) in the first lift (2). The second lift (6) is arranged on the other side of the scraper (4).

5. The automatic scraper for film production according to claim 1, Its characteristics are: A coupling (7) is provided on one side of the first elevator (2), one end of the worm (201) passes through the box wall of the first elevator (2) and is clamped with the coupling (7), and a coupling (7) is provided on one side of the second elevator (6), and a connecting shaft (8) is clamped with the couplings (7) at both ends.

6. An automatic scraper for film production according to claim 1, Its characteristics are: The first elevator (2) and the second elevator (6) have the same structure, and the transmission ratio between the worm wheel (202) and the worm (201) is 100-150.

7. The automatic scraper for film production according to claim 1, Its characteristics are: The inclined surface at the front end of the scraper (4) is 30 to 50 degrees with the plane of the blade back.

8. The automatic scraper for film production according to claim 1, Its characteristics are: The tip of the scraper (4) is rounded, and the radius of the rounded corner is 0.5-5 mm.

9. The automatic scraper for film production according to claim 1, Its characteristics are: Both sides of the scraper (4) are connected to the connecting piece (3) by bolts, and the number of the bolts is at least two.

10. The automatic scraper for film production according to claim 1, Its characteristics are: The material of the scraper (4) is alloy tool steel, ceramics, or plastic.

Images