Static electricity removing device for polyethylene cast film

Abstract

The utility model belongs to the technical field of polyethylene cast film production, and particularly relates to a destaticizing device for a polyethylene cast film, which comprises a base, a winding mechanism and a destaticizing mechanism, the winding mechanism and the destaticizing mechanism are correspondingly mounted at the top end of the base, a compression roller is arranged at the top end of the base and at the bottom end of the winding mechanism, and the destaticizing mechanism is connected with the compression roller. A sleeve is mounted at the top end of the base, a reset spring is mounted in the sleeve, a butt joint rod is movably connected to the top end of the sleeve, and a mounting block is mounted at the top end of the butt joint rod; the static electricity removing mechanism comprises two supporting frames and a static electricity removing mechanism body, the two supporting frames are installed on one side of the top end of the base, and the static electricity removing mechanism body is located between the supporting frames. And therefore, the film is leveled when the polyethylene cast film is wound, and the winding flatness is prevented from being affected by wrinkles generated during winding.

Description

Technical Field

[0001] The utility model belongs to the technical field of polyethylene cast film production, and in particular relates to a static electricity removal device for polyethylene cast film. Background Art

[0002] Casting is a plastic molding technology that spreads a polymer solution or polymer melt directly onto a steel belt or a cooling steel roller through a scraper or extruder die to form an unoriented film of a certain thickness. The polyethylene film produced by casting is characterized by fast production speed, high output, excellent transparency, glossiness, thickness uniformity, etc. The polyethylene cast film is a packaging material that uses polyethylene as the main raw material. According to functional requirements, it is mixed with a certain proportion of modified masterbatch, metallocene and other materials, and is manufactured by one or more extruders through melt co-extrusion casting, non- or unidirectional micro-stretching methods. The flat extruded film is made of, among which the "a static electricity removal device for film" disclosed in the application number "CN202122221958.1" is also an increasingly mature technology. By providing a first limit frame and a second limit frame, one side of the winding drum is inserted into the interior of the first limit frame, and the other side of the winding drum is inserted into the clamping block for fixation. The winding drum can be rotated by the rotation of the driving motor, and the film can be rolled up by the rotation of the winding drum. However, during the winding process, the polyethylene cast film is in the form of a film, and the generation of tension can easily cause winding wrinkles, which in turn affects the winding flatness. Utility Model Content

[0003] The utility model aims to provide a static electricity removal device for polyethylene cast film, aiming to solve the problem in the prior art that when the above-mentioned equipment is in use, the polyethylene cast film is in a thin film shape and is prone to wrinkles during winding due to the generation of tension, thereby affecting the winding flatness.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a static electricity removal device for polyethylene cast film, comprising a base, a winding mechanism and a static electricity removal mechanism, the winding mechanism and the static electricity removal mechanism are located at the top end of the base and are installed correspondingly, a pressure roller is arranged at the top end of the base and at the bottom end of the winding mechanism, a sleeve is installed at the top end of the base, a return spring is installed inside the sleeve, a docking rod is movably connected to the top end of the sleeve, and a mounting block is installed at the top end of the docking rod; the static electricity removal mechanism comprises a support frame and a static electricity removal mechanism, the support frame is provided with two sides installed at the top end of the base, and the static electricity removal mechanism is installed between the support frames; the winding mechanism comprises a mounting frame, a winding drum and a servo motor, the mounting frame is provided with two sides installed at the top end of the base, the winding drum is connected between the two mounting frames, and the servo motor is installed on the outer side wall of the mounting frame and the output shaft is connected to one end of the winding drum.

[0005] As a preferred embodiment of the utility model of a static electricity removal device for polyethylene cast film, the mounting block is in a U-shape, and the pressure roller is rotatably mounted in a recess of the mounting block.

[0006] As a preferred embodiment of the utility model of a static electricity removal device for polyethylene cast film, the docking rod is elastically telescopically connected to the sleeve via a reset spring.

[0007] As a preferred embodiment of the utility model of a static electricity removal device for polyethylene cast film, the top end of the pressure roller is fitted with the bottom end of the winding drum through a sleeve, a docking rod and a mounting block.

[0008] As a preferred embodiment of the utility model of a static electricity removal device for polyethylene cast film, the side wall of the base is extended inwardly to be connected with a threaded rod, and the end of the threaded rod is connected with a bearing.

[0009] As a preferred embodiment of the utility model of a static electricity removal device for polyethylene cast film, one end of the threaded rod located inside the base is threadedly connected to the mounting frame.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. The utility model makes the pressure roller fit with the bottom end of the winding drum through the cooperation between the pressure roller, the docking rod and the reset spring, so as to flatten the polyethylene cast film when the film is wound, and avoid wrinkles during winding to affect the flatness of the winding;

[0012] 2. The utility model uses a threaded rod, so that the rotation of the threaded rod can drive the mounting frame to move on the top of the base, thereby facilitating the removal of the winding drum from the mounting frame, thereby facilitating the material removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the main structure of the utility model from a top view;

[0016] Figure 3 It is a schematic diagram of a partial cross-sectional structure of the main body of the utility model;

[0017] Figure 4 The utility model is a schematic diagram of the connection structure of the pressing roller, the docking rod and the sleeve.

[0018] In the figure: 1. base; 2. support frame; 3. anti-static mechanism; 4. mounting frame; 5. take-up drum; 6. servo motor; 7. sleeve; 8. reset spring; 9. docking rod; 10. mounting block; 11. clamping roller; 12. threaded rod; 13. bearing. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Embodiment 1

[0021] See also Figure 1-4 The utility model provides the following technical solutions: a static electricity removal device for polyethylene cast film, comprising a base 1, a winding mechanism and a static electricity removal mechanism, the winding mechanism and the static electricity removal mechanism are located at the top of the base 1 and are installed correspondingly, a pressure roller 11 is arranged at the top of the base 1 and at the bottom of the winding mechanism, a sleeve 7 is installed at the top of the base 1, a return spring 8 is installed inside the sleeve 7, a docking rod 9 is movably connected to the top of the sleeve 7, and a mounting block 10 is installed at the top of the docking rod 9; the static electricity removal mechanism comprises a support frame 2 and a static electricity removal mechanism 3, the support frame 2 is provided with two sides installed at the top of the base 1, and the static electricity removal mechanism 3 is installed between the support frames 2; the structure of the static electricity removal mechanism 3 varies adaptively according to the type of static electricity eliminator selected, for example, when the static electricity eliminator is an ion wind rod, the static electricity removal mechanism 3 is an ion wind rod. An electrostatic eliminator is an existing electronic device that generates a certain value of high voltage through a high-voltage power generator and applies it to a discharge needle. Positive ions neutralize negative static electricity, and negative ions neutralize positive static electricity, thereby achieving the purpose of eliminating and preventing static electricity. Common ion fans, ion air guns, ion air rods, ion air drums, etc. are not described here.

[0022] The winding mechanism includes a mounting frame 4, a winding drum 5 and a servo motor 6. The mounting frame 4 is provided with two mountings on one side at the top of the base 1. The winding drum 5 is connected between the two mounting frames 4. The servo motor 6 is installed on the outer wall of the mounting frame 4 and the output shaft is connected to one end of the winding drum 5.

[0023] Preferably, the mounting block 10 is in a U-shape, and the pressing roller 11 is rotatably mounted in a recess of the mounting block 10 .

[0024] Preferably, the docking rod 9 is elastically telescopically connected to the sleeve 7 via the return spring 8 .

[0025] Preferably, the top end of the pressing roller 11 is fitted with the bottom end of the winding drum 5 through the sleeve 7 , the docking rod 9 and the mounting block 10 .

[0026] In the embodiment, during the process of removing static electricity and winding up the polyethylene cast film, first, the polyethylene cast film passes through the static electricity removal mechanism 3, and then is wound around the winding drum 5. At the same time, the polyethylene cast film will be squeezed by the pressure roller 11, and then as the servo motor 6 is connected to the power supply and starts working, the servo motor 6 and the output shaft drive the winding drum 5 to rotate between the two mounting frames 4. At the same time, as more and more polyethylene cast film is wound around the winding drum 5, the pressure roller 11 will be squeezed and lowered, and the squeezing force is transmitted to the reset spring 8, and the reset spring 8 shrinks and deforms. Then, the pressure roller 11 is always against the bottom end of the winding drum 5 as the polyethylene cast film is wound up, so as to avoid the situation where wrinkles are caused by the tension force when the polyethylene cast film is wound up, thereby improving the flatness of the polyethylene cast film. When the polyethylene cast film passes through the static electricity removal mechanism 3, the static electricity removal mechanism 3 will eliminate the static electricity of the polyethylene cast film.

[0027] Embodiment 2

[0028] See also Figure 1-4 The side wall of the base 1 extends inwardly and is connected to a threaded rod 12 , and the end of the threaded rod 12 is connected to a bearing 13 .

[0029] Preferably, one end of the threaded rod 12 located inside the base 1 is threadedly connected to the mounting bracket 4 .

[0030] In the embodiment, according to the description of the above embodiment one, after the polyethylene cast film is wound up, the threaded rod 12 can be rotated to allow the threaded rod 12 to rotate inside the base 1 along the inner ring of the bearing 13, and then the mounting frame 4 moves along the thread on the surface of the threaded rod 12, so that the distance between the two mounting frames 4 changes, thereby facilitating the removal of the winding drum 5 from the mounting frame 4, thereby facilitating the material removal.

[0031] It should be noted that the electrical equipment described in this article all belongs to existing mature technologies, and the working principles will not be elaborated in this article.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An antistatic device for a polyethylene cast film, characterized in that: It includes a base (1), a winding mechanism and an antistatic mechanism. The winding mechanism and the antistatic mechanism are correspondingly installed at the top of the base (1). A pressing roller (11) is arranged at the top of the base (1) and at the bottom of the winding mechanism. A sleeve (7) is installed at the top of the base (1). A return spring (8) is installed inside the sleeve (7). The top of the sleeve (7) is movably connected to a docking rod (9). An installation block (10) is installed at the top of the docking rod (9); The antistatic mechanism includes a support frame (2) and an antistatic mechanism (3). Two support frames (2) are arranged on one side of the top of the base (1). The antistatic mechanism (3) is installed between the support frames (2); The winding mechanism includes an installation frame (4), a winding drum (5) and a servo motor (6). Two installation frames (4) are arranged on one side of the top of the base (1). The winding drum (5) is connected between the two installation frames (4). The servo motor (6) is installed on the outer side wall of the installation frame (4) and the output shaft is connected to one end of the winding drum (5).

2. The antistatic device for a polyethylene cast film according to claim 1, characterized in that: The installation block (10) is in a U-shape, and the pressing roller (11) is rotatably installed in the notch of the installation block (10).

3. The antistatic device for a polyethylene cast film according to claim 1, characterized in that: The docking rod (9) and the sleeve (7) form an elastic telescopic connection through the return spring (8).

4. The antistatic device for a polyethylene cast film according to claim 1, characterized in that: The top of the pressing roller (11) is in contact with the bottom of the winding drum (5) through the sleeve (7), the docking rod (9) and the installation block (10).

5. The antistatic device for a polyethylene cast film according to claim 1, characterized in that: A threaded rod (12) extends inward from the side wall of the base (1), and a bearing (13) is connected to the end of the threaded rod (12).

6. The antistatic device for a polyethylene cast film according to claim 5, characterized in that: One end of the threaded rod (12) located inside the base (1) is threadedly connected to the installation frame (4).

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