Cutting device for plastic film production

Abstract

The utility model relates to the technical field of plastic film production equipment, and discloses a cutting device for plastic film production, which comprises a bottom plate, a conveying rod is longitudinally and movably connected in the bottom plate, the right side of the top of the bottom plate is movably connected with a winding rod, and a plastic film body is wound on the surface of the winding rod. A supporting plate is fixedly mounted at the top of the bottom plate, a fixing frame is fixedly mounted at the top of the supporting plate, an air cylinder is fixedly mounted at the bottom of the fixing frame, a mounting plate is fixedly mounted at the bottom of the air cylinder, a cutter is fixedly mounted at the bottom of the mounting plate, and an inner tensioning assembly is connected to the bottom of the mounting plate. According to the utility model, through the mutual cooperation of the air cylinder, the cutter and the supporting plate structure, the air cylinder pushes the cutter to move and work towards the supporting plate, the mounting plate simultaneously pushes the inner tensioning assembly to internally support the plastic film body on the supporting plate so as to level the cut part of the plastic film body, and then the plastic film body is cut off by the cutter, so that the effects of tightly supporting, leveling and cutting off are realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of plastic film production equipment, especially to a cutting device for plastic film production. BACKGROUND

[0002] In the plastic film production, the plastic film needs to be cut by the cutting device after winding, but the existing plastic film is generally cut directly in the cutting process, and due to the toughness of the plastic film, the cutting knife cannot stretch and flatten the plastic film in the first time of cutting, which may cause wrinkles and incomplete cutting.

[0003] Therefore, the cutting device for plastic film production is proposed to solve the above problems. UTILITY MODEL CONTENT

[0004] In order to make up for the above shortcomings, the utility model provides a cutting device for plastic film production, which aims to improve the problem that the existing plastic film cannot be cut due to its toughness and wrinkles.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A cutting device for plastic film production, comprising a bottom plate, a conveying rod movably connected inside the bottom plate, a winding rod movably connected to the right side of the top of the bottom plate, a plastic film body wound on the surface of the winding rod, a support plate fixedly installed on the top of the bottom plate, a fixed frame fixedly installed on the top of the support plate, a gas cylinder fixedly installed at the bottom of the fixed frame, an installation plate fixedly installed at the bottom of the gas cylinder, a cutting knife fixedly installed at the bottom of the installation plate, an inner tensioning assembly connected to the bottom of the installation plate, an outer tensioning assembly movably connected to both sides of the support plate, and a heating assembly connected to the bottom of the installation plate.

[0007] As a further description of the above technical scheme:

[0008] The inner tensioning assembly comprises a support rod, the support rod is connected to the bottom of the installation plate through a metal plate, an activity plate is sleeved on the surface of the support rod, and a rubber wheel is movably connected in the activity plate.

[0009] As a further description of the above technical scheme:

[0010] The surface of the support rod is connected with a torsion spring, and the end of the torsion spring away from the support rod is connected with the inner wall of the activity plate.

[0011] As a further description of the above technical scheme:

[0012] The outer tensioning assembly comprises a center rod movably connected on both sides of the support plate, a rotating plate connected on the surface of the center rod, a pressing spring connected on the bottom of the rotating plate, and the bottom of the pressing spring connected with the top of the support plate.

[0013] As a further description of the above technical solution:

[0014] The inner side of the rotating plate is movably connected with a conveying wheel, and the surface of the conveying wheel is in contact with the bottom of the plastic film body.

[0015] As a further description of the above technical solution:

[0016] The heating assembly comprises a connecting plate connected on the bottom of the mounting plate, a heating wire fixedly installed on the inner side of the connecting plate, and the heating wire located on the outer side of the cutter.

[0017] As a further description of the above technical solution:

[0018] The top of the support plate is provided with a cutting groove, and the cutting groove is located at the bottom of the cutter and used in cooperation with the cutter.

[0019] As a further description of the above technical solution:

[0020] The front end of the conveying wheel is connected with the output end of the motor fixedly installed on the front surface of the support plate.

[0021] The utility model has the following beneficial effects:

[0022] 1、The utility model discloses a cutting device for plastic film production which comprises a support plate, a cutter movably connected on the top of the support plate, a mounting plate movably connected on the bottom of the support plate, an inner tensioning assembly movably connected on the inner side of the mounting plate, a heating assembly movably connected on the outer side of the mounting plate, and a motor fixedly installed on the front surface of the support plate.

[0023] 2、The utility model discloses a cutting device for plastic film production which comprises a support plate, a cutter movably connected on the top of the support plate, a mounting plate movably connected on the bottom of the support plate, an inner tensioning assembly movably connected on the inner side of the mounting plate, a heating assembly movably connected on the outer side of the mounting plate, and a motor fixedly installed on the front surface of the support plate. DRAWINGS

[0024] Figure 1 A three-dimensional schematic view of the cutting device for plastic film production is provided.

[0025] Figure 2 A three-dimensional structural schematic view of the outer tensioning assembly of the cutting device for plastic film production is provided.

[0026] Figure 3 The utility model provides a kind of structure schematic diagram of main view section of a kind of cutting device for plastic film production;

[0027] Figure 4 The utility model provides Figure 3 The enlarged schematic view of structure in A place.

[0028] Legend:

[0029] 1, bottom plate;2, conveying rod;3, winding rod;4, plastic film body;5, support plate;6, fixed frame;7, air cylinder;8, mounting plate;9, cutter;101, support rod;102, movable plate;103, rubber wheel;11, torsion spring;121, center rod;122, rotating plate;123, abutting elastic sheet;13, conveying wheel;141, connecting plate;142, heating wire;15, cutting groove;16, motor. Specific embodiments

[0030] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0031] Referring to Figures 1-3 , the utility model provides an embodiment: a kind of cutting device for plastic film production, including bottom plate 1, the inside vertical movable connection of bottom plate 1 has conveying rod 2, the right side of the top of bottom plate 1 is movably connected with winding rod 3, and plastic film body 4 is wound on the surface of winding rod 3, and plastic film body 4 is rolled by motor driving winding rod 3 after being supported by conveying rod 2, the top of bottom plate 1 is fixedly installed with support plate 5, the top of support plate 5 is fixedly installed with fixed frame 6, and support plate 5 and fixed frame 6 can fix cutter 9 under air cylinder 7 at the top of body and use, the bottom of fixed frame 6 is fixedly installed with air cylinder 7, the bottom of air cylinder 7 is fixedly installed with mounting plate 8, the bottom of mounting plate 8 is fixedly installed with cutter 9, and cutter 9 under air cylinder 7 pushes mounting plate 8 to be able to cut plastic film body 4 on support plate 5, the bottom of mounting plate 8 is connected with inner tensioning assembly, and the both sides of support plate 5 are movably connected with outer tensioning assembly, and inner tensioning assembly and outer tensioning assembly can be tensioned and flattened to plastic film body 4 in the cutting of cutter 9 to plastic film body 4, so that it is convenient to be cut off, and the bottom of mounting plate 8 is connected with heating assembly.

[0032] Referring to Figures 2-4The inner tensioning assembly comprises a supporting rod 101 connected to the bottom of the mounting plate 8 through a metal plate, the surface of the supporting rod 101 is sleeved with a movable plate 102, the supporting rod 101 and the movable plate 102 can support the rubber wheel 103, and then the rubber wheel 103 first contacts the plastic film body 4 and then outwardly stretches the plastic film body 4 to flatten it, the inside of the movable plate 102 is movably connected with the rubber wheel 103, the surface of the supporting rod 101 is connected with a torsion spring 11, one end of the torsion spring 11 away from the supporting rod 101 is connected with the inner wall of the movable plate 102, the movable plate 102 is continuously pushed by the torsion spring 11 to push the rubber wheel 103 to press on the plastic film body 4, so that the plastic film body 4 is outwardly stretched and stretched by the rubber wheel 103, and the plastic film body 4 is not easy to wrinkle when being cut, the outer tensioning assembly comprises a center rod 121 movably connected to the two sides of the supporting plate 5, the surface of the center rod 121 is connected with a rotating plate 122, the bottom of the rotating plate 122 is connected with a pressing spring 123, the center rod 121 can support the rotating plate 122 under the pressing spring 123 to support the plastic film body 4 with the center rod 121 as the center, so that the plastic film body 4 can be pushed by the pressing spring 123 to rotate the plate 122 to adapt to supporting the plastic film body 4, so that the plastic film body 4 is supported by the conveying wheel 13 while being outwardly stretched by the rubber wheel 103, and the part of the plastic film body 4 on the conveying wheel 13 is also supported by the conveying wheel 13, so that the plastic film body 4 is flattened under the stretching of the conveying wheel 13 and the rubber wheel 103, so as to be effectively stretched and flattened, and then cut by the cutter 9, the bottom of the pressing spring 123 is connected with the top of the supporting plate 5, the inside of the rotating plate 122 is movably connected with the conveying wheel 13, the surface of the conveying wheel 13 is in contact with the bottom of the plastic film body 4, the front end of the conveying wheel 13 is connected with the output end of the motor 16, and the front end of the conveying wheel 13 is connected with the output end of the motor 16.

[0033] Referring to Figures 2-4 The heating assembly comprises a connecting plate 141 connected to the bottom of the mounting plate 8, the inside of the connecting plate 141 is fixedly installed with a heating wire 142, the heating wire 142 is located on the outside of the cutter 9, the top of the supporting plate 5 is provided with a cutting groove 15, the cutting groove 15 is located at the bottom of the cutter 9 and is used in cooperation with the cutter 9, and the heating wire 142 supported by the connecting plate 141 heats the cutter 9, so that the cutter 9 can be heated to reduce the resistance of the plastic film body 4 and can more easily cut the plastic film body 4.

[0034] Working principle: in the cutting of the plastic film body 4, the conveying wheel 13 rotates in the rotating plate 122 under the continuous pushing of the elastic sheet 123, and the plastic film body 4 is pressed by the rubber wheel 103 pushed by the air cylinder 7, so that the plastic film body 4 extrudes the conveying wheel 13, the conveying wheel 13 can drive the rotating plate 122 to rotate for a short time with the center rod 121 as the center, the plastic film body 4 is stretched for a short time during conveying on the conveying wheel 13 and the rubber wheel 103, the movable plate 102 can make the supporting rod 101 rotate with the center after the rubber wheel 103 contacts the top of the plastic film body 4, and the torsional spring 11 continuously twists the movable plate 102, so that the movable plate 102 drives the rubber wheel 103 to roll outward on the plastic film body 4, so that the plastic film body 4 is stretched outward with the bottom of the cutter 9 as the center, then the cutter 9 heated by the air cylinder 7 and the heating wire 142 cuts the plastic film body 4, so as to achieve the effect that the plastic film body 4 is completely cut after being stretched and flattened.

[0035] Finally, it should be noted that: the above only for the preferred embodiments of the utility model, and does not limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features, any modification, equivalent replacement, improvement etc. made within the spirit and principles of the utility model, should be included in the protection scope of the utility model.

Claims

1. A cutting device for producing plastic film, comprising a base plate (1), wherein a conveying rod (2) is longitudinally and movably connected inside the base plate (1), and a winding rod (3) is movably connected to the right side of the top of the base plate (1), wherein a plastic film body (4) is wound around the surface of the winding rod (3), characterized in that: The top of the bottom plate (1) is fixedly installed with a supporting plate (5), the top of the supporting plate (5) is fixedly installed with a fixing frame (6), the bottom of the fixing frame (6) is fixedly installed with an air cylinder (7), the bottom of the air cylinder (7) is fixedly installed with a mounting plate (8), the bottom of the mounting plate (8) is fixedly installed with a cutter (9), the bottom of the mounting plate (8) is connected with an inner tensioning assembly, both sides of the supporting plate (5) are movably connected with an outer tensioning assembly, and the bottom of the mounting plate (8) is connected with a heating assembly.

2. The cutting device for plastic film production according to claim 1, characterized in that: The inner tensioning assembly comprises a supporting rod (101), the supporting rod (101) is connected with the bottom of the mounting plate (8) through a metal plate, and the surface of the supporting rod (101) is sleeved with a movable plate (102).

3. The cutting device for plastic film production according to claim 2, characterized in that: The surface of the supporting rod (101) is connected with a torsional spring (11), one end of the torsional spring (11) away from the supporting rod (101) is connected with the inner wall of the movable plate (102).

4. The cutting device for plastic film production according to claim 1, characterized in that: The outer tensioning assembly comprises a center rod (121), the center rod (121) is movably connected on both sides of the supporting plate (5), the surface of the center rod (121) is connected with a rotating plate (122), the bottom of the rotating plate (122) is connected with a pressing spring (123), and the bottom of the pressing spring (123) is connected with the top of the supporting plate (5).

5. The cutting device for plastic film production according to claim 4, characterized in that: The inner side of the rotating plate (122) is movably connected with a conveying wheel (13), and the surface of the conveying wheel (13) is in contact with the bottom of the plastic film body (4).

6. The cutting device for plastic film production according to claim 1, characterized in that: The heating assembly comprises a connecting plate (141), the connecting plate (141) is connected to the bottom of the mounting plate (8), the inner side of the connecting plate (141) is fixedly installed with a heating wire (142), and the heating wire (142) is located on the outer side of the cutter (9).

7. The cutting device for plastic film production according to claim 1, characterized in that: The top of the supporting plate (5) is provided with a cutting groove (15), and the cutting groove (15) is located at the bottom of the cutter (9) and is used in cooperation with the cutter (9).

8. The cutting device for plastic film production according to claim 1, characterized in that: The front surface of the supporting plate (5) is fixedly installed with a motor (16), and the output end of the motor (16) is connected with the front end of the conveying wheel (13).

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