Cooling setting machine applied to modified plastic foamed sheet

Abstract

The utility model provides a cooling setting machine applied to a modified plastic foaming plate. The setting machine mainly comprises a cooling setting upper wall plate, a cooling setting lower wall plate, a cooling setting left wall plate, a cooling setting right wall plate, a motor, a cooling water pipe, a base, a traction machine and a guide rail. In order to cool quickly and uniformly, cooling water pipes in the setting machine are designed into two rows of mutually crossed structures, and a plate inlet of the setting machine is slightly larger than a plate outlet and is in a ladder shape, so that the foamed plate can smoothly enter the setting machine to be cooled, and in addition, a layer of smooth aluminum sheet is wrapped on the inner surface of the setting machine. Friction force between a foaming plate and a setting machine is reduced, and therefore the problem of frequent strip breaking in the traction process is solved. According to the utility model, good shaping and traction work of the modified plastic foaming plate can be realized.

Description

Technical Field

[0001] The present invention relates to the technical field of cooling and shaping machines, and in particular to a cooling and shaping machine for modified plastic foamed plates. Background Art

[0002] A shaping machine is a multi-functional machine device widely used in different industries to process various materials to ensure their specific shapes, dimensions and properties. In the extrusion and modification foaming industry, cooling and shaping is an important section in the process.

[0003] In the extrusion and modification of foamed plates, usually, the material is melted in the barrel of a twin-screw extruder and then mixed with a foaming agent. Finally, the material is extruded through the die of a single-screw extruder and immediately foamed into a plate prototype. In order to make the shape and dimensions of the plate meet the design requirements, generally, the size design during cooling and shaping is smaller than the size of the foamed prototype just extruded from the die, which easily causes the foamed plates to accumulate at the entrance of the cooling and shaping machine. During the cooling and shaping process, due to insufficient cooling temperature and uneven cooling of the shaping machine, defects such as surface collapse, shrinkage, and unevenness often occur on the foamed plates. During the traction process, due to the large friction between the cooling and shaping machine and the foamed plates, the foamed plates often break during traction, and currently, a conventional cooling and shaping machine cannot be used for good shaping and traction work.

[0004] Therefore, it is necessary to provide a new type of cooling and shaping machine to solve the above three technical problems of foamed plate accumulation, uneven surface cooling of foamed plates, and excessive friction between foamed plates and the shaping machine. Utility Model Content

[0005] Aiming at the above problems existing in the prior art, the purpose of the present utility model is to provide a cooling and shaping machine that can simultaneously solve the problem of foamed plate accumulation at the entrance of the cooling and shaping machine, solve the problems of surface collapse, shrinkage, and unevenness of foamed plates, and reduce the friction between foamed plates and the cooling and shaping machine.

[0006] To achieve the above purpose, the present utility model adopts the following technical solutions:

[0007] A cooling and shaping machine for modified plastic foamed plates includes the following structures: 1 cooling and shaping upper wall plate, 2 cooling and shaping lower wall plate, 3 cooling and shaping left wall plate, 4 cooling and shaping right wall plate, 5 motor, 6 cooling water pipe, 7 base, 8 tractor, 9 guide rail.

[0008] The 2 cooling and shaping lower wall plate, 5 motor, 8 tractor, and 9 guide rail are fixed on the 7 base. The 3 cooling and shaping left wall plate and 4 cooling and shaping right wall plate are located between the 1 cooling and shaping upper wall plate and the 2 cooling and shaping lower wall plate and are fixed on the 9 guide rail. The 6 cooling water pipe is embedded in the 1 cooling and shaping upper wall plate, 2 cooling and shaping lower wall plate, 3 cooling and shaping left wall plate, and 4 cooling and shaping right wall plate.

[0009] In the present invention, the cooling water pipes in the shaping machine wall plates are designed in a two-row structure that intersects with each other, and the temperature of the cooling water is between 8°C and 12°C.

[0010] In the present invention, the outlet width W1 of the foamed board of the shaping machine is 5 - 8 cm, the inlet width W2 of the foamed board is slightly wider than the outlet width, in a ladder shape, and the inlet is 0.5 cm - 1 cm wider than the outlet.

[0011] In the present invention, the heights of the left and right cooling and shaping wall plates are 3 - 4 cm, preferably 3.5 cm. The inlet of the foamed board is slightly higher than the outlet, in a ladder shape, and the inlet is 0.2 cm - 0.5 cm higher than the outlet.

[0012] In the present invention, the inner surface of the shaping machine is covered with a layer of smooth aluminum sheet, and the thickness of the aluminum sheet is between 0.5 mm and 2 mm.

[0013] In the present invention, the distance L between the tractor and the shaping machine is 10 cm - 30 cm.

[0014] In the present invention, the left and right wall plates are movable.

[0015] The modified plastic foamed board described in the present invention includes a polypropylene system, a PLA system, a PBS system, and a PBAT system.

[0016] The working principle of the cooling and shaping machine provided by the present utility model for the strip-shaped cooling and shaping of modified plastic foamed boards is as follows:

[0017] The molten plastic is pressurized by a twin-screw extruder. When approaching the discharge end of the twin-screw extruder, a foaming agent is injected. Possible impurities are filtered out through a screen changer, and then the material flows through multiple channels of the die through a screen. Since the diameter of the material gradually becomes smaller and accelerates towards the discharge end of the twin-screw, the finally molten material and the foaming agent are mixed and enter a single screw. The material is fully mixed and pressurized in the single screw and finally flows out in a strip shape through the die holes. The strips of material flowing out of the die holes (for example, 24 pieces) are instantaneously foamed into a board prototype. After the board passed through the extruded foam is cooled and shaped by the shaping machine, it is pressed by the upper and lower pressure rollers of the tractor and pulled backward, thus completing the entire cooling and shaping and traction work.

[0018] Specifically, the cooling and shaping machine provided in the above Embodiment 1 works as follows: Open the upper wall plate of the cooling and shaping machine, feed the foamed board extruded from the single-screw die hole into the cooling and shaping machine, manually open the cooling water pipe, and finally feed the cooled and shaped board into the tractor. The board is pressed by the upper and lower rollers of the tractor and conveyed backward at a uniform speed, completing the entire cooling, shaping, and traction work.

[0019] During the above working process, in order to prevent the foamed board from piling up at the inlet of the cooling and shaping machine, the inlet of the left wall plate 3 and the right wall plate 4 of the cooling and shaping machine is slightly wider by 0.5 cm - 1 cm and slightly higher by 0.2 cm - 0.5 cm (the outlet width is 5 - 8 cm) and slightly higher (the outlet height is 3 - 4 cm, preferably 3.5) than the outlet. In order to enable the board to be cooled quickly and evenly, the cooling water pipes in the wall plate of the shaping machine are designed in a two-row structure that intersects each other, and the cooling water temperature is between 8°C and 12°C. The inner surface of the shaping machine is covered with a layer of smooth aluminum sheet, and the thickness of the aluminum sheet is between 0.5 mm and 2 mm, which can reduce the friction between the foamed board and the inner surface of the cooling and shaping machine, thereby reducing the problem of broken strips during traction.

[0020] Compared with the prior art, the positive effects of the present utility model are as follows:

[0021] (1) It can solve the problem of the foamed board piling up at the inlet of the shaping machine;

[0022] (2) It can solve the problems of surface collapse, shrinkage, and unevenness of the board caused by insufficient surface cooling and uneven cooling of the foamed board;

[0023] (3) It can solve the problem of large friction between the foamed board and the cooling and shaping machine, thereby reducing the frequent problem of broken strips during traction. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the present utility model, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0025] Figure 1 It is a schematic structural diagram of the tractor and the cooling and shaping machine in Embodiment 1 of the present utility model;

[0026] Figure 2 It is a schematic diagram of the inlet of the cooling and shaping machine;

[0027] Figure 3 It is a schematic diagram of the cooling and shaping machine. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The following is a further description of the technical solution of the present invention through embodiments, but the scope of protection required by the present invention is not limited to the scope described in the embodiments.

[0029] Embodiment 1

[0030] A cooling and shaping machine applied to modified plastic foamed plates. Please refer to Figure 1 In Embodiment 1 of the present utility model, specifically, it is a cooling and shaping machine applied to modified plastic extrusion foaming and suitable for the drawbar type, including: 1 cooling and shaping upper wall plate, 2 cooling and shaping lower wall plate, 3 cooling and shaping left wall plate, 4 cooling and shaping right wall plate, 5 motor, 6 cooling water pipe, 7 base, 8 tractor, 9 guide rail. The 2 cooling and shaping lower wall plate, 5 motor, 8 tractor, and 9 guide rail are fixed on the 7 base. The 3 cooling and shaping left wall plate and 4 cooling and shaping right wall plate are located between the 1 cooling and shaping upper wall plate and the 2 cooling and shaping lower wall plate and are fixed on the 9 guide rail. The 6 cooling water pipe is embedded in the 1 cooling and shaping upper wall plate, 2 cooling and shaping lower wall plate, 3 cooling and shaping left wall plate, and 4 cooling and shaping right wall plate.

[0031] The 6 cooling water pipes are arranged in two rows that cross each other inside the shaping machine wall plate, and the cooling water temperature is 8°C.

[0032] The inlet of the 3 cooling and shaping left wall plate and 4 cooling and shaping right wall plate is slightly wider, in a ladder shape, and the inlet is 0.5 cm wider than the outlet.

[0033] The inlet of the 3 cooling and shaping left wall plate and 4 cooling and shaping right wall plate is slightly higher, in a ladder shape, and the inlet is 0.2 cm higher than the outlet.

[0034] The inner surfaces of the 1 cooling and shaping upper wall plate, 2 cooling and shaping lower wall plate, 3 cooling and shaping left wall plate, and 4 cooling and shaping right wall plate are covered with a layer of smooth aluminum sheet, and the thickness of the aluminum sheet is 0.5 mm.

[0035] The 8 tractor is 10 cm away from the cooling and shaping machine.

[0036] The working process is as follows: Open the 1 cooling and shaping upper wall plate, send the foamed plate extruded from the single-screw die hole into the cooling and shaping machine, open the 6 cooling water pipe, and finally send the plate after cooling and shaping into the tractor. The plate is pressed by the upper and lower rollers of the tractor and is uniformly conveyed backward to complete the cooling and shaping and traction work.

[0037] The composition of the PBAT foamed plate is 801T (85%), FY804 (8%), ER-CH (0.5%), TGIC (0.2%), MONO (0.3%), and freon (6%).

[0038] The composition of the PLA foamed sheet is LX575 (85%), T16 (8%), ER-CH (0.5%), TGIC (0.2%), MONO (0.3%), and Freon (6%).

[0039] The composition of the PBS foamed sheet is GAT05 (85%), T18 (8%), ER-CH (0.5%), TGIC (0.2%), MONO (0.3%), Freon (3%), and carbon dioxide (3%).

[0040] The foamed sheet does not accumulate at the entrance of the sizing machine; there are no problems such as collapse, shrinkage, or unevenness on the surface of the sheet; and there is no problem of broken strips.

[0041] Example 2

[0042] A cooling and sizing machine applied to modified plastic foamed sheets. Please refer to Figure 1 , in Embodiment 1 of the present utility model, specifically, it is a cooling and sizing machine applied to modified plastic extrusion foaming and suitable for the draw-bar type, including: 1 cooling and sizing upper wall plate, 2 cooling and sizing lower wall plate, 3 cooling and sizing left wall plate, 4 cooling and sizing right wall plate, 5 motor, 6 cooling water pipe, 7 base, 8 tractor, 9 guide rail. The 2 cooling and sizing lower wall plate, 5 motor, 11 tractor, and 9 guide rail are fixed on the 7 base. The 3 cooling and sizing left wall plate and 4 cooling and sizing right wall plate are located between the 1 cooling and sizing upper wall plate and the 2 cooling and sizing lower wall plate and are fixed on the 9 guide rail. The 6 cooling water pipe is embedded in the 1 cooling and sizing upper wall plate, 2 cooling and sizing lower wall plate, 3 cooling and sizing left wall plate, and 4 cooling and sizing right wall plate.

[0043] The 6 cooling water pipes are arranged in two rows that cross each other inside the sizing machine wall plate, and the cooling water temperature is 12°C.

[0044] The inlet of the 3 cooling and sizing left wall plate and 4 cooling and sizing right wall plate is slightly wider, in a ladder shape, and the inlet is 1 cm wider than the outlet.

[0045] The inlet of the 3 cooling and sizing left wall plate and 4 cooling and sizing right wall plate is slightly higher, in a ladder shape, and the inlet is 0.5 cm higher than the outlet.

[0046] The inner surfaces of the 1 cooling and sizing upper wall plate, 2 cooling and sizing lower wall plate, 3 cooling and sizing left wall plate, and 4 cooling and sizing right wall plate are covered with a layer of smooth aluminum sheet, and the thickness of the aluminum sheet is 2 mm.

[0047] The 8 tractor is 30 cm away from the cooling and sizing machine.

[0048] The working process is as follows: Open the 1 upper wall plate of the cooling and shaping machine, send PBAT, PLA, and PBS extruded from the single-screw die hole into the cooling and shaping machine respectively, open the 6 cooling water pipes, and finally send the sheet material that has been cooled and shaped into the traction machine. The sheet material is pressed by the upper and lower rollers of the traction machine and is evenly conveyed backward to complete the cooling and shaping and traction work.

[0049] The foamed sheet material does not accumulate at the entrance of the shaping machine; there are no problems such as collapse, shrinkage, or unevenness on the surface of the sheet material; there is no problem of broken strips.

[0050] Example 3

[0051] A cooling and shaping machine for modified plastic foamed sheet materials. Please refer to Figure 1 In Example 1 of the present utility model, specifically, it is a cooling and shaping machine applicable to the extrusion and foaming experiment of modified plastics and suitable for the drawbar type, including: 1 upper wall plate of the cooling and shaping machine, 2 lower wall plate of the cooling and shaping machine, 3 left wall plate of the cooling and shaping machine, 4 right wall plate of the cooling and shaping machine, 5 motor, 6 cooling water pipe, 7 base, 8 traction machine, 9 guide rail. The 2 lower wall plate of the cooling and shaping machine, 5 motor, 11 traction machine, and 9 guide rail are fixed on the 7 base. The 3 left wall plate of the cooling and shaping machine and the 4 right wall plate of the cooling and shaping machine are located between the 1 upper wall plate of the cooling and shaping machine and the 2 lower wall plate of the cooling and shaping machine and are fixed on the 9 guide rail. The 6 cooling water pipe is embedded in the 1 upper wall plate of the cooling and shaping machine, the 2 lower wall plate of the cooling and shaping machine, the 3 left wall plate of the cooling and shaping machine, and the 4 right wall plate of the cooling and shaping machine.

[0052] The 6 cooling water pipes are arranged in two rows that cross each other inside the wall plates of the shaping machine, and the temperature of the cooling water is 10°C.

[0053] The inlet of the 3 left wall plate of the cooling and shaping machine and the 4 right wall plate of the cooling and shaping machine is slightly wider, in a ladder shape, and the inlet is 0.8 cm wider than the outlet.

[0054] The inlet of the 3 left wall plate of the cooling and shaping machine and the 4 right wall plate of the cooling and shaping machine is slightly higher, in a ladder shape, and the inlet is 0.3 cm higher than the outlet.

[0055] The inner surfaces of the 1 upper wall plate of the cooling and shaping machine, the 2 lower wall plate of the cooling and shaping machine, the 3 left wall plate of the cooling and shaping machine, and the 4 right wall plate of the cooling and shaping machine are covered with a layer of smooth aluminum sheets, and the thickness of the aluminum sheets is 1 mm.

[0056] The 8 traction machine is 20 cm away from the cooling and shaping machine.

[0057] The working process is as follows: Open the 1 upper wall plate of the cooling and shaping machine, send PBAT, PLA, and PBS extruded from the single-screw die hole into the cooling and shaping machine respectively, open the 6 cooling water pipes, and finally send the sheet material that has been cooled and shaped into the traction machine. The sheet material is pressed by the upper and lower rollers of the traction machine and is evenly conveyed backward to complete the cooling and shaping and traction work.

[0058] The foamed sheet is not piled up at the entrance of the shaping machine; there are no problems such as collapse, shrinkage, and unevenness on the surface of the sheet; there is no problem of broken strips.

[0059] Comparative example

[0060] Open the upper wall plate of the cooling and shaping machine, and send the PBAT, PLA, and PBS foamed sheets extruded from the single-screw die holes into the cooling and shaping machine with the same inlet width and outlet width, and the same inlet height and outlet height respectively. Cool and shape through the only single straight-through cooling water pipe in the shaping machine. Finally, send the sheet after cooling and shaping into the tractor. The sheet is pressed by the upper and lower rollers of the tractor and conveyed backward at a constant speed to complete the cooling and shaping and traction work.

[0061] In the comparative example, since the inlet and outlet widths and heights are the same, there will be a problem of sheet accumulation at the inlet; there is only one single straight-through water pipe for the cooling water pipe in the shaping machine, resulting in poor cooling effect and uneven cooling. Problems such as collapse, shrinkage, and depression will appear on the surface of the sheet; the surface material of the cooling and shaping machine is stainless steel, with excessive friction, and there will be a problem of broken strips.

Claims

1. A cooling and shaping machine applied to modified plastic foamed plates, characterized in that, It includes the following structures: a cooling and shaping upper wall plate (1), a cooling and shaping lower wall plate (2), a cooling and shaping left wall plate (3), a cooling and shaping right wall plate (4), a motor (5), a cooling water pipe (6), a base (7), a tractor (8), and a guide rail (9). The cooling and shaping lower wall plate (2), the motor (5), the tractor (8), and the guide rail (9) are fixed on the base (7). The cooling and shaping left wall plate (3) and the cooling and shaping right wall plate (4) are located between the cooling and shaping upper wall plate (1) and the cooling and shaping lower wall plate (2) and are fixed on the guide rail (9). The cooling water pipe (6) is embedded in the cooling and shaping upper wall plate (1), the cooling and shaping lower wall plate (2), the cooling and shaping left wall plate (3), and the cooling and shaping right wall plate (4).

2. The cooling and shaping machine according to claim 1, characterized in that, The cooling water pipes in the shaping machine wall plates are designed in a structure of two rows that cross each other, and the temperature of the cooling water is between 8°C and 12°C.

3. The cooling and shaping machine according to claim 1, characterized in that The width W1 of the outlet of the foamed sheet of the shaping machine is 5 - 8 cm, and the width W2 of the inlet of the foamed sheet is 0.5 cm - 1 cm wider than the outlet width.

4. The cooling and shaping machine according to claim 1, characterized in that, The height of the cooling and shaping left and right wall plates is 3 - 4 cm, and the inlet of the foamed sheet is 0.2 cm - 0.5 cm higher than the outlet.

5. The cooling and shaping machine according to claim 4, wherein The height of the cooling and shaping left and right wall plates is 3.5 cm.

6. The cooling and shaping machine according to claim 1, characterized in that, The inner surface of the shaping machine is covered with a layer of smooth aluminum sheet, and the thickness of the aluminum sheet is between 0.5 mm and 2 mm.

7. The cooling and shaping machine according to claim 1, characterized in that, The distance L between the tractor and the shaping machine is 10 cm - 30 cm.

8. The cooling and shaping machine according to claim 1, wherein The cooling and shaping left wall plate and the cooling and shaping right wall plate are set to be fixed or movable.

9. The cooling and shaping machine according to claim 1, wherein The modified plastic foamed sheet includes a polypropylene system, a PLA system, a PBS system, and a PBAT system.

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