Sheet extruding and flattening device

Abstract

The utility model discloses a sheet extruding and flattening device which comprises a machine frame, first pressing rollers are arranged at the two ends of the machine frame, a flattening unit is arranged at the top of the machine frame, the flattening unit comprises a cooling chamber erected above the machine frame, and the flattening unit further comprises four second pressing rollers. The two second pressing rollers located at the top are rotationally installed on the side wall of the cooling chamber, and a refrigeration assembly is installed on one side of the cooling chamber and used for cooling the two second pressing rollers located at the top. According to the utility model, the leveling unit is arranged and is matched with the refrigeration assembly, so that the sheets are synchronously cooled in the leveling process, the flatness of the plastic sheets is further improved, the phenomena of bending, deformation, adhesion and the like caused by the fact that the sheets are not cooled in time after being leveled are reduced, and the quality of the sheets is ensured.

Description

Technical Field

[0001] The utility model relates to the field of plastic sheet production lines, in particular to a sheet extrusion and flattening device. Background Art

[0002] Plastic sheet is used to produce thermoformed products such as disposable plastic cups, plates, bowls, dishes, and boxes. With growing domestic demand, the use of thermoformed plastic packaging sheet is becoming increasingly widespread. Currently, during the flattening process on sheet production lines, the sheet does not fully solidify after being flattened and stretched. Failure to cool the sheet in time can cause the sheet to warp, warp, and stick, compromising the quality of the flattened sheet. Utility Model Content

[0003] The purpose of the utility model is to provide a sheet extrusion and flattening device to solve the problem in the above background technology that the flattening and cooling of the sheet are not synchronized, thereby affecting the quality of the sheet.

[0004] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a sheet extrusion and flattening device, comprising a frame, both ends of the frame are provided with a first pressing roller, the top of the frame is provided with a flattening unit, the flattening unit comprises a cooling chamber mounted above the frame, a plurality of support rods are fixedly installed between the cooling chamber and the frame, a sliding rod is slidably installed on an adjacent pair of support rods, a hydraulic cylinder is fixedly installed at the central position of both sides of the frame, the output end of the hydraulic cylinder is fixedly connected to the sliding rod, the flattening unit also includes four second pressing rollers, the two second pressing rollers at the top are rotatably installed on the side wall of the cooling chamber, the two second pressing rollers at the bottom are rotatably connected to the sliding rod, and a refrigeration component is installed on one side of the cooling chamber, which is used to cool the two second pressing rollers at the top.

[0005] Preferably, a through hole is provided at the bottom of the cooling chamber at a position corresponding to the second pressing roller, and rubber strips are fixedly installed on both sides of the through hole through a fastening assembly.

[0006] Preferably, the fastening assembly is a bolt.

[0007] Preferably, the refrigeration assembly includes a mounting plate fixedly mounted on the side wall of the cooling chamber, the top of the mounting plate extends from the main body in a vertical direction to form a raised section, a vortex tube is fixedly sleeved on the raised section, one end of the vortex tube is a cold air end, the cold air end extends into the cooling chamber, and the other end is a hot air end, and the hot air end is connected to an insulation pipe.

[0008] Preferably, the mounting plate is integrally formed by bending.

[0009] Preferably, the bottoms of a pair of vortex tubes are fixedly connected to a same tee pipe, and a connecting pipe is installed at the end of the tee pipe.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] The utility model provides a flattening unit and cooperates with a refrigeration component to cool the sheet synchronously during the flattening process, thereby further improving the flatness of the plastic sheet material, reducing the bending, deformation and sticking of the sheet caused by failure to cool in time after flattening, and ensuring the quality of the sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a sheet material extrusion and flattening device of the present invention;

[0013] Figure 2 This is a schematic diagram of the three-dimensional structure of a flattening unit of a sheet material extrusion and flattening device of the present invention;

[0014] Figure 3 This is a schematic diagram of the cross-sectional three-dimensional structure of a cooling chamber of a sheet extrusion and flattening device of the present invention.

[0015] In the figure: 1. frame; 2. first pressure roller; 3. support rod; 4. slide rod; 5. cooling chamber; 6. vortex tube; 7. mounting plate; 8. hydraulic cylinder; 9. connecting pipe; 10. insulation pipe; 11. second pressure roller; 12. rubber strip. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] See also Figure 1 and Figure 3The utility model provides a technical solution: a sheet extrusion and flattening device, comprising a frame 1, with first pressing rollers 2 provided at both ends of the frame 1, a flattening unit provided on the top of the frame 1, and a cooling chamber 5 mounted above the frame 1, with a plurality of support rods 3 fixedly installed between the cooling chamber 5 and the frame 1, and a sliding rod 4 slidably installed on an adjacent pair of support rods 3, and a hydraulic cylinder 8 fixedly installed at the central position on both sides of the frame 1, and the output end of the hydraulic cylinder 8 is fixedly connected to the sliding rod 4, and the electric sliding rod 4 can be slid on the supporting rod 3 by controlling the lifting of the hydraulic cylinder 8, and a scale can be pasted on the outer wall of the supporting rod 3 to observe the lifting height of the sliding rod 4, and the flattening unit also includes four second pressing rollers 11, the two second pressing rollers 11 at the top are rotatably mounted on the side walls of the cooling chamber 5, and the two second pressing rollers 11 at the bottom are rotatably connected to the sliding rod 4, and the cooling chamber 5 A refrigeration component is installed on one side, which is used to cool the two second pressing rollers 11 at the top. The second pressing roller 11 is made of steel, and its surface has good wear resistance and abrasion resistance, and at the same time, the heat conduction efficiency is high. A through hole is opened at the bottom of the cooling chamber 5 corresponding to the second pressing roller 11. Rubber strips 12 are fixedly installed on both sides of the through hole through fastening components. The rubber strips 12 are set at an angle. The advantage of this setting is that the end of the rubber strip 12 extends from the through hole to contact the outer wall of the second pressing roller 11, which can prevent the cold air in the cooling chamber 5 from leaking out. The fastening component is a bolt, which has the advantage of easy disassembly and assembly. This application sets a leveling unit and cooperates with the refrigeration component to achieve synchronous cooling during the process of leveling the sheet, thereby further improving the flatness of the plastic sheet material, reducing the bending, deformation and sticking of the sheet due to failure to cool in time after leveling, and ensuring the quality of the sheet.

[0018] In one embodiment of this invention, see Figure 1 and Figure 2The refrigeration assembly includes a mounting plate 7 fixedly mounted on the side wall of the cooling chamber 5. The mounting plate 7 is formed as a whole by bending. The advantage of this arrangement is that the manufacturing difficulty is low and the cost is effectively saved. The top of the mounting plate 7 is extended from the main body in the vertical direction to form a raised section. A vortex tube 6 is fixedly sleeved on the raised section. One end of the vortex tube 6 is the cold air end, which extends into the cooling chamber 5, and the other end is the hot air end. The hot air end is connected to an insulation pipe 10. The bottom of a pair of vortex tubes 6 is fixedly connected to the same tee pipe. The end of the tee pipe is installed with a connecting pipe 9. The working principle of the vortex tube 6 is to connect the end of the connecting pipe 9 to the air compressor. In the machine, after the compressed air is injected into the vortex chamber of the vortex tube 6, the airflow rotates at a high speed and flows to the hot air end of the vortex tube 6 (that is, the insulation tube 10). After a part of the gas is blocked, a reverse vortex is formed inside the original airflow, and it flows to the cold air end of the vortex tube at a high speed, that is, it is merged into the cooling chamber 5. The second pressing roller 11 at the top conducts the temperature through the through hole at the bottom of the cooling chamber 5 to achieve the effect of cooling. The cooled second pressing roller 11 squeezes and flattens the sheet. In this way, flattening and cooling are carried out simultaneously, which effectively reduces the bending, deformation and sticking of the sheet caused by not cooling in time after flattening, thereby ensuring the quality of the sheet.

[0019] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0020] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sheet material extrusion and smoothing device, comprising a frame (1), wherein both ends of the frame (1) are provided with first pressing rollers (2), characterized in that: A leveling unit is provided on the top of the frame (1), and the leveling unit includes a cooling chamber (5) mounted above the frame (1), a plurality of support rods (3) are fixedly installed between the cooling chamber (5) and the frame (1), and a slide rod (4) is slidably installed on an adjacent pair of the support rods (3), and a hydraulic cylinder (8) is fixedly installed at the central position of both sides of the frame (1), and the output end of the hydraulic cylinder (8) is fixedly connected to the slide rod (4), and the leveling unit also includes four second pressing rollers (11), the two second pressing rollers (11) at the top are rotatably installed on the side wall of the cooling chamber (5), and the two second pressing rollers (11) at the bottom are rotatably connected to the slide rod (4), and a refrigeration component is installed on one side of the cooling chamber (5), which is used to cool the two second pressing rollers (11) at the top.

2. The sheet extrusion and smoothing device according to claim 1, characterized in that: A through hole is provided at a position on the bottom of the cooling chamber (5) corresponding to the second pressing roller (11), and rubber strips (12) are fixedly mounted on both sides of the through hole via fastening components.

3. The sheet extrusion and smoothing device according to claim 2, characterized in that: The fastening component is a bolt.

4. The sheet material extrusion and smoothing device according to claim 1, characterized in that: The refrigeration assembly comprises a mounting plate (7) fixedly mounted on the side wall of the cooling chamber (5); the top of the mounting plate (7) extends from the main body in a vertical direction to form a raised section; a vortex tube (6) is fixedly sleeved on the raised section; one end of the vortex tube (6) is a cold air end, which extends into the cooling chamber (5); the other end is a hot air end, which is connected to a heat-insulating pipe (10).

5. The sheet extrusion and smoothing device according to claim 4, characterized in that: The mounting plate (7) is integrally formed by bending.

6. The sheet extrusion and smoothing device according to claim 4, characterized in that: The bottoms of a pair of vortex tubes (6) are fixedly connected to a common tee pipe, and a connecting pipe (9) is installed at the end of the tee pipe.

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