Polyethylene terephthalate (PET) sheet production trimming device

Abstract

The utility model discloses a trimming device for PET sheet production, and belongs to the technical field of sheet trimming. A PET sheet production trimming device comprises a frame case, a front shaft feeding unit is arranged in the frame case, a longitudinal cutting supporting plate is arranged on one side of the front shaft feeding unit, a rear shaft feeding unit is arranged on the other side of the longitudinal cutting supporting plate, a transverse cutting unit is arranged on the other side of the rear shaft feeding unit, and a transverse cutting unit is arranged on the other side of the transverse cutting unit. A rim charge plate is arranged at one end of the frame machine box, and a feeding roller is arranged below the front shaft feeding unit. In order to solve the problems that a PET sheet can deviate in the process of being conveyed through a roller body, the PET material can generate static electricity in the friction process to generate an adsorption phenomenon, and finally the cutting level deviates, rocker arms at the two ends of a tensioning roller can be independently controlled, the tensioning degree of the two ends of the tensioning roller can be adjusted through stretching and retracting of the rocker arms, and therefore the purpose of adjusting the cutting level is achieved. In this way, the sheets can be tensioned and corrected when the sheets deviate during conveying.

Description

Technical Field

[0001] The utility model relates to the technical field of sheet trimming, in particular to a PET sheet production trimming device. Background Art

[0002] PET sheet is a new type of plastic product developed in recent years. It is produced by a series of compression and polymerization processes using high-precision machinery. Its transparency can be changed in real time according to its specific requirements. And because of its good ductility and plasticity, it can also be placed in our homes or offices as a decoration. During the production process of PET sheet, the extruded PET sheet needs to be trimmed.

[0003] The Chinese patent publication number CN218083023U discloses a trimming and cutting device for PET sheet production, which cools the PET sheet through a cooling roller and a coolant inside the cooling roller, so that the PET sheet will not be trimmed unevenly due to the high temperature of the PET during trimming and cutting, and the residual materials cut on both sides are collected, so that the residual materials will not be piled up on the production line, causing inconvenience in collecting the residual materials.

[0004] In the above patent, the PET sheet will deviate during the process of being conveyed by the roller, and the PET material itself will generate static electricity and adsorption during the friction process, which will eventually lead to deviations in the cutting level. Utility Model Content

[0005] The purpose of the utility model is to provide a PET sheet production trimming device, wherein the rocker arms at both ends of the tensioning roller can be independently controlled, and the tensioning degree at both ends of the tensioning roller can be adjusted by extending and retracting the rocker arms, so that the sheet can be tensioned and corrected when it is offset during transportation, thereby solving the problems in the prior art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a PET sheet production trimming device, comprising a frame chassis, a front axle feed unit is arranged inside the frame chassis, a longitudinal cutting support plate is arranged on one side of the front axle feed unit, a rear axle feed unit is arranged on the other side of the longitudinal cutting support plate, a cross-cutting unit is arranged on the other side of the rear axle feed unit, an edge material plate is arranged at one end of the frame chassis, a feed roller is arranged below the front axle feed unit, the feed roller is rotatably connected to the frame chassis, horizontal pressure rollers are arranged on both sides of the longitudinal cutting support plate, and the horizontal pressure rollers are rotatably connected to the longitudinal cutting support plate.

[0007] Preferably, a baffle is provided on one side of the edge plate, a lifting bracket is provided below the edge plate, and the edge plate and the lifting bracket are connected via a rotating shaft.

[0008] Preferably, a push knife assembly is provided on the inner side of the cross-cutting unit, and the push knife assembly is slidably connected to the cross-cutting unit. A blade is provided below the push knife assembly, and the blade is connected to the push knife assembly by bolts. A synchronous pressure plate is provided on one side of the push knife assembly, and the synchronous pressure plate is slidably connected to the cross-cutting unit.

[0009] Preferably, a metal support plate is provided below the synchronous pressure plate, the metal support plate is located below the blade, and a static elimination rod is provided on the inner side of the metal support plate.

[0010] Preferably, the front axle feeding unit includes a rubber roller and a conveying roller, the rubber roller is located above the conveying roller, a tensioning roller is arranged below the conveying roller, rocker arms are arranged at both ends of the tensioning roller, and the tensioning roller is connected to the frame chassis through the rocker arms.

[0011] Preferably, the rear axle feeding unit includes a pinching assembly and a transfer roller.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. In the utility model, the rocker arms at both ends of the tensioning roller can be independently controlled, and the tensioning degree at both ends of the tensioning roller can be adjusted by extending and retracting the rocker arms, so that the sheet can be tensioned and corrected when it is offset during conveying;

[0014] 2. In the utility model, the synchronous pressing plate moves downward with the push knife assembly. Before the blade at the bottom of the push knife assembly contacts the sheet, the synchronous pressing plate will first contact the sheet to press and fix the sheet on the metal support plate, so that the sheet can be prevented from being offset during the cutting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the overall front view of the utility model;

[0016] Figure 2 This is a schematic diagram of the cross-cutting unit structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the edge plate of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the feeding unit of the utility model.

[0019] In the figure: 1. frame chassis; 2. edge plate; 3. front axle feeding unit; 4. rear axle feeding unit; 5. cross-cutting unit; 6. longitudinal cutting support plate; 101. feeding roller; 102. horizontal pressure roller; 201. baffle bar; 202. lifting bracket; 301. rubber roller; 302. conveying roller; 303. tensioning roller; 304. rocker arm; 401. clamping assembly; 402. transfer roller; 501. push knife assembly; 502. blade; 503. synchronous pressure plate; 504. static elimination rod; 505. metal support plate. DETAILED DESCRIPTION

[0020] 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.

[0021] In order to solve the problem that the PET sheet will deviate during the conveying process of the roller, and the PET material itself will generate static electricity and adsorption during the friction process, which will eventually lead to deviation in the cutting level; please refer to Figure 1-4 , the utility model provides the following solutions:

[0022] A PET sheet production trimming device comprises a frame chassis 1, a front axle feeding unit 3 is arranged inside the frame chassis 1, a longitudinal cutting support plate 6 is arranged on one side of the front axle feeding unit 3, a rear axle feeding unit 4 is arranged on the other side of the longitudinal cutting support plate 6, a transverse cutting unit 5 is arranged on the other side of the rear axle feeding unit 4, a side material plate 2 is arranged at one end of the frame chassis 1, a feeding roller 101 is arranged below the front axle feeding unit 3, the feeding roller 101 is rotatably connected to the frame chassis 1, horizontal pressing rollers 102 are arranged on both sides of the longitudinal cutting support plate 6, the horizontal pressing roller 102 is rotatably connected to the longitudinal cutting support plate 6, a baffle 201 is arranged on one side of the side material plate 2, the baffle 201 can prevent the side material from slipping out, a lifting bracket 202 is arranged below the side material plate 2, the side material plate 2 is connected to the lifting bracket 202 through a rotating shaft, and the lifting bracket 202 can control the height angle of the side material plate 2;

[0023] In this embodiment, the PET sheet enters the front axle feed unit 3 through the feed roller 101, and then enters the longitudinal cutting support plate 6 area through the front axle feed unit 3. Horizontal pressing rollers 102 are installed on both sides of the longitudinal cutting support plate 6. The horizontal pressing rollers 102 can press the sheet on the surface of the longitudinal cutting support plate 6, and a longitudinal cutting structure can be provided above the longitudinal cutting support plate 6 for cutting and trimming both sides of the sheet. After passing through the longitudinal cutting support plate 6, the sheet will enter the cross-cutting unit 5 area, and the cross-cutting unit 5 will be used to completely cut the sheet and then pull it out, and the edge material produced by the cutting will fall into the edge material plate 2;

[0024] A push knife assembly 501 is arranged on the inner side of the cross-cutting unit 5, and the push knife assembly 501 is slidably connected to the cross-cutting unit 5. A blade 502 is arranged below the push knife assembly 501, and the blade 502 is connected to the push knife assembly 501 by bolts. A synchronous pressing plate 503 is arranged on one side of the push knife assembly 501, and the synchronous pressing plate 503 is slidably connected to the cross-cutting unit 5. A metal support plate 505 is arranged below the synchronous pressing plate 503, and the metal support plate 505 is located below the blade 502. A static elimination rod 504 is arranged on the inner side of the metal support plate 505, and the static elimination rod 504 contacts with the sheet material, and the static electricity on the surface of the sheet material is guided out by friction to avoid the static electricity on the surface of the sheet material. The surface is subjected to the phenomenon of electrostatic adsorption. The front axle feeding unit 3 includes a rubber roller 301 and a conveying roller 302. The rubber roller 301 is located above the conveying roller 302. A tensioning roller 303 is arranged below the conveying roller 302. Rockers 304 are arranged at both ends of the tensioning roller 303. The tensioning roller 303 is connected to the frame chassis 1 through the rockers 304. The rear axle feeding unit 4 includes a clamping assembly 401 and a transfer roller 402. The rockers 304 at both ends of the tensioning roller 303 can be independently controlled. The tensioning degree at both ends of the tensioning roller 303 can be adjusted by extending and retracting the rockers 304, so that the sheet can be tensioned and corrected when the sheet is offset during transportation.

[0025] In this embodiment, the synchronous pressure plate 503 moves downward with the push knife assembly 501. Before the blade 502 at the bottom of the push knife assembly 501 contacts the sheet, the synchronous pressure plate 503 will first contact the sheet to press the sheet tightly and fix it on the metal support plate 505, so as to avoid the sheet from being offset during the cutting process.

[0026] Working principle: the PET sheet enters the front axle feeding unit 3 through the feed roller 101, and then enters the longitudinal cutting support plate 6 area through the front axle feeding unit 3. Horizontal pressure rollers 102 are installed on both sides of the longitudinal cutting support plate 6. The horizontal pressure rollers 102 can press the sheet on the surface of the longitudinal cutting support plate 6, and a longitudinal cutting structure can be set above the longitudinal cutting support plate 6 for cutting and trimming both sides of the sheet. After passing through the longitudinal cutting support plate 6, the sheet will enter the cross-cutting unit 5 area, and the cross-cutting unit 5 will be used to completely cut the sheet and then pull it out. The synchronous pressing plate 503 moves downward with the push knife assembly 501. Before the blade 502 at the bottom of the push knife assembly 501 contacts the sheet, the synchronous pressing plate 503 will first contact the sheet to press and fix the sheet on the metal support plate 505. In this way, the sheet can be prevented from being offset during the cutting process, and the edge material produced by the cutting falls into the edge material plate 2.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A PET sheet production trimming device, comprising a frame chassis (1), characterized in that: A front axle feed unit (3) is arranged inside the frame chassis (1), a longitudinal cutting support plate (6) is arranged on one side of the front axle feed unit (3), a rear axle feed unit (4) is arranged on the other side of the longitudinal cutting support plate (6), and a transverse cutting unit (5) is arranged on the other side of the rear axle feed unit (4), an edge plate (2) is arranged at one end of the frame chassis (1), a feed roller (101) is arranged below the front axle feed unit (3), and the feed roller (101) is rotatably connected to the frame chassis (1), and horizontal pressure rollers (102) are arranged on both sides of the longitudinal cutting support plate (6), and the horizontal pressure rollers (102) are rotatably connected to the longitudinal cutting support plate (6).

2. A PET sheet production trimming device according to claim 1, characterized in that: A blocking strip (201) is provided on one side of the edge material plate (2), a lifting bracket (202) is provided below the edge material plate (2), and the edge material plate (2) and the lifting bracket (202) are connected via a rotating shaft.

3. A PET sheet production trimming device according to claim 1, characterized in that: A push knife assembly (501) is arranged on the inner side of the cross-cutting unit (5), and the push knife assembly (501) is slidably connected to the cross-cutting unit (5); a blade (502) is arranged below the push knife assembly (501), and the blade (502) is connected to the push knife assembly (501) by bolts; a synchronous pressure plate (503) is arranged on one side of the push knife assembly (501), and the synchronous pressure plate (503) is slidably connected to the cross-cutting unit (5).

4. A PET sheet production trimming device according to claim 3, characterized in that: A metal support plate (505) is arranged below the synchronous pressure plate (503), the metal support plate (505) is located below the blade (502), and a static electricity elimination rod (504) is arranged on the inner side of the metal support plate (505).

5. A PET sheet production trimming device according to claim 1, characterized in that: The front axle feeding unit (3) comprises a rubber roller (301) and a conveying roller (302), wherein the rubber roller (301) is located above the conveying roller (302), a tensioning roller (303) is arranged below the conveying roller (302), rocker arms (304) are arranged at both ends of the tensioning roller (303), and the tensioning roller (303) is connected to the frame chassis (1) via the rocker arms (304).

6. A PET sheet production trimming device according to claim 1, characterized in that: The rear axle feeding unit (4) comprises a pinching assembly (401) and a transfer roller (402).

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