A plastic sheet extrusion molding apparatus

Abstract

The utility model belongs to the technical field of forming device, concretely relates to a kind of plastic sheet extrusion forming device, including extrusion component and extrusion die, and extrusion die is arranged at one end of extrusion component, and one end of extrusion die is provided with support table, and the top of support table is provided with three linear distribution's shaping roller assembly, shaping roller assembly includes two corresponding distribution's mounting bracket, and shaping roller is rotatably connected between two mounting brackets, and one end of shaping roller is rotatably connected with flow guide pipe, and one end of one mounting bracket is fixedly connected with speed reducer, and the output shaft of speed reducer is fixedly connected with one end of flow guide pipe.The utility model, plastic particles are melted and extruded by extrusion component, and the raw material extruded is formed into sheet material by extrusion die, and the thickness of sheet material is adjusted by shaping roller assembly, and hot water is introduced into shaping roller inside by flow guide pipe, to heat shaping roller, to avoid sheet material cooling and difficult to shape.

Description

Technical Field

[0001] This utility model belongs to the field of molding device technology, specifically relating to a plastic sheet extrusion molding device. Background Technology

[0002] Molten plastic is plasticized and extruded by an extruder, and then passes through a grid plate into the die head. This die head has a wide and thin discharge port. The flow channel changes from a circle to a flat slit as the molten material flows from the barrel to the die head. The material is evenly distributed along the width of the die head and then extruded into sheets through the die.

[0003] In conventional sheet extrusion equipment, a setting roller is used to adjust the thickness after the plastic is extruded. However, in traditional extrusion molding equipment, there is a certain distance between the extrusion die and the setting roller. The plastic loses temperature when it enters the setting roller, and the sheet becomes hard after losing temperature, which affects the subsequent extrusion and shaping. Utility Model Content

[0004] The purpose of this invention is to provide a plastic sheet extrusion molding device that can heat the shaping roller, thereby avoiding the problem of the sheet being difficult to shape when cooled, thus solving the problem mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a plastic sheet extrusion molding device, comprising an extrusion assembly and an extrusion die, wherein the extrusion die is disposed at one end of the extrusion assembly, a support platform is disposed at one end of the extrusion die, and three linearly distributed shaping roller assemblies are disposed on the top of the support platform; The shaping roller assembly includes two corresponding mounting frames, with a shaping roller rotatably connected between the two mounting frames. One end of the shaping roller is rotatably connected to a guide tube. One end of one of the mounting frames is fixedly connected to a geared motor, and the output shaft of the geared motor is fixedly connected to one end of the guide tube.

[0006] Furthermore, the extrusion assembly includes a base, an extruder is fixedly connected to the top of the base, an extrusion die is installed at one end of the extruder, and a feed hopper is fixedly connected to the top of the side wall of the extruder.

[0007] Furthermore, the shaping roller is equipped with an inlet chamber and a return chamber. The inlet chamber is located near the side wall of the shaping roller, and the return chamber is located in the middle of the shaping roller.

[0008] Furthermore, one end of the inlet chamber is connected to one end of the return chamber.

[0009] Furthermore, a connecting pipe is fixedly connected to one end of the shaping roller, and a ball bearing is fixedly sleeved on the side wall of the connecting pipe. The connecting pipe is rotatably connected to the corresponding mounting bracket through the ball bearing.

[0010] Furthermore, the guide tube includes an inlet straight pipe and a return bend. The return bend is located inside the inlet straight pipe. One end of the return bend penetrates the side wall of the inlet straight pipe. A first sealing bearing is provided on the side wall of the inlet straight pipe. One end of the inlet straight pipe is rotatably connected to the inside of the connecting pipe through the first sealing bearing.

[0011] Furthermore, one end of the shaping roller is fixedly connected to an insertion tube, and a second sealing bearing is provided on the side wall of the insertion tube. The insertion tube is rotatably connected to the inside of the return bend through the second sealing bearing.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the extrusion assembly melts and extrudes plastic granules, the extruded raw material is shaped into a sheet through the extrusion die, the sheet thickness is adjusted by the shaping roller assembly, and hot water is introduced into the shaping roller through the guide pipe to heat the shaping roller, thereby avoiding the sheet from cooling down and being difficult to shape. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a front view of the present invention; Figure 3 This utility model Figure 2 A cross-sectional view of the AA plane; Figure 4 This utility model Figure 3 A magnified structural diagram of part A in the middle.

[0014] The attached diagram lists the components represented by each number as follows: 1. Extrusion assembly; 11. Base; 12. Extruder; 13. Feed hopper; 2. Extrusion die; 3. Support platform; 4. Shaping roller assembly; 41. Mounting frame; 42. Shaping roller; 421. Liquid inlet chamber; 422. Return chamber; 423. Connecting pipe; 424. Insert pipe; 425. Ball bearing; 43. Guide pipe; 431. Liquid inlet straight pipe; 432. Return bend pipe; 433. First sealed bearing; 434. Second sealed bearing; 44. Gear motor. Detailed Implementation

[0015] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0016] like Figure 1-3As shown, a plastic sheet extrusion molding apparatus includes an extrusion assembly 1 and an extrusion die 2. The extrusion die 2 is disposed at one end of the extrusion assembly 1, and a support platform 3 is disposed at one end of the extrusion die 2. Three linearly distributed shaping roller assemblies 4 are disposed on the top of the support platform 3. The shaping roller assembly 4 includes two correspondingly distributed mounting brackets 41, and a shaping roller 42 is rotatably connected between the two mounting brackets 41. A guide pipe 43 is rotatably connected to one end of the shaping roller 42. A reduction motor 44 is fixedly connected to one end of one of the mounting brackets 41, and the output shaft of the reduction motor 44 is fixedly connected to one end of the guide pipe 43.

[0017] According to the above structure, during use, the plastic granules are melted and extruded by the extrusion assembly 1. The extruded raw material is shaped into a sheet by the extrusion die 2. The sheet thickness is adjusted by the shaping roller assembly 4. Hot water is introduced into the shaping roller 42 through the guide pipe 43 to heat the shaping roller 42, thereby preventing the sheet from cooling down and becoming difficult to shape.

[0018] like Figure 2 As shown, the extrusion assembly 1 includes a base 11, an extruder 12 is fixedly connected to the top of the base 11, an extrusion die 2 is installed at one end of the extruder 12, and a feed hopper 13 is fixedly connected to the top of the side wall of the extruder 12.

[0019] According to the above structure, during use, plastic granules are fed into the extruder 12 through the feed hopper 13. The extruder 12 melts the plastic granules and extrudes them forward. The molten plastic is then extruded and shaped through the extrusion die 2.

[0020] like Figure 2-4 As shown, the shaping roller 42 has an inlet chamber 421 and a return chamber 422 inside. The inlet chamber 421 is close to the side wall of the shaping roller 42, and the return chamber 422 is located in the middle of the shaping roller 42. One end of the inlet chamber 421 is connected to one end of the return chamber 422. One end of the shaping roller 42 is fixedly connected to a connecting pipe 423. A ball bearing 425 is fixedly sleeved on the side wall of the connecting pipe 423. The connecting pipe 423 is rotatably connected to the corresponding mounting bracket 41 through the ball bearing 425.

[0021] According to the above structure, during use, hot water first enters the interior of the liquid inlet chamber 421, then enters the interior of the return chamber 422 along the liquid inlet chamber 421, and flows out through one end of the return chamber 422, thereby forming a circulating flow of hot water, which can heat the side wall of the shaping roller 42, and thus heat the sheet when shaping the sheet, avoiding the difficulty of cooling the sheet and facilitating shaping.

[0022] like Figure 2-4As shown, the guide pipe 43 includes an inlet straight pipe 431 and a return bend 432. The return bend 432 is disposed inside the inlet straight pipe 431. One end of the return bend 432 penetrates the side wall of the inlet straight pipe 431. A first sealing bearing 433 is disposed on the side wall of the inlet straight pipe 431. One end of the inlet straight pipe 431 is rotatably connected to the inside of the connecting pipe 423 through the first sealing bearing 433. One end of the shaping roller 42 is fixedly connected to the insertion tube 424. A second sealing bearing 434 is disposed on the side wall of the insertion tube 424. The insertion tube 424 is rotatably connected to the inside of the return bend 432 through the second sealing bearing 434.

[0023] According to the above structure, during use, one end of the inlet straight pipe 431 and the return bend pipe 432 are connected to the external water supply system, thereby connecting the shaping roller 42 to the external water supply system. Hot water enters the inlet chamber 421 through the inlet straight pipe 431, and then flows back to the inside of the return bend pipe 432 through the return chamber 422 and the insertion pipe 424. Finally, it flows back to the water supply system through the return bend pipe 432 for heating and then flows back to the inside of the inlet straight pipe 431.

[0024] The working principle of this utility model is as follows: In use, plastic granules are melted and extruded through the extrusion assembly 1. The extruded raw material is shaped into a sheet through the extrusion die 2. The sheet thickness is adjusted by the shaping roller assembly 4. Hot water is introduced into the shaping roller 42 through the guide pipe 43 to heat the shaping roller 42, thereby preventing the sheet from cooling down and becoming difficult to shape. In use, plastic granules are fed into the extruder 12 through the feed hopper 13. The extruder 12 melts the plastic granules and extrudes them forward. The molten plastic is extruded and shaped through the extrusion mold 2. In use, one end of the inlet straight pipe 431 and the return bend pipe 432 are connected to the external water supply system, thereby connecting the shaping roller 42 to the external water supply system. Hot water enters the inlet chamber 421 through the inlet straight pipe 431, and then flows back to the inside of the return bend pipe 432 through the return chamber 422 and the insertion pipe 424. Finally, it flows back to the water supply system through the return bend pipe 432 for heating and then flows back to the inside of the inlet straight pipe 431.

[0025] The above are merely preferred embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A plastic sheet extrusion molding apparatus, comprising an extrusion assembly (1) and an extrusion die (2), characterized in that: The extrusion die (2) is set at one end of the extrusion assembly (1), and a support platform (3) is set at one end of the extrusion die (2). Three linearly distributed shaping roller assemblies (4) are set on the top of the support platform (3). The shaping roller assembly (4) includes two corresponding mounting frames (41), a shaping roller (42) is rotatably connected between the two mounting frames (41), a guide tube (43) is rotatably connected to one end of the shaping roller (42), and a geared motor (44) is fixedly connected to one end of one of the mounting frames (41), and the output shaft of the geared motor (44) is fixedly connected to one end of the guide tube (43).

2. The plastic sheet extrusion molding apparatus according to claim 1, characterized in that: The extrusion assembly (1) includes a base (11), an extruder (12) is fixedly connected to the top of the base (11), an extrusion die (2) is installed at one end of the extruder (12), and a feed hopper (13) is fixedly connected to the top of the side wall of the extruder (12).

3. The plastic sheet extrusion molding apparatus according to claim 2, characterized in that: The shaping roller (42) has an inlet chamber (421) and a return chamber (422) inside. The inlet chamber (421) is close to the side wall of the shaping roller (42), and the return chamber (422) is located in the middle of the shaping roller (42).

4. The plastic sheet extrusion molding apparatus according to claim 3, characterized in that: One end of the liquid inlet chamber (421) is connected to one end of the return chamber (422).

5. A plastic sheet extrusion molding apparatus according to claim 4, characterized in that: One end of the shaping roller (42) is fixedly connected to a connecting pipe (423), and a ball bearing (425) is fixedly sleeved on the side wall of the connecting pipe (423). The connecting pipe (423) is rotatably connected to the corresponding mounting bracket (41) through the ball bearing (425).

6. The plastic sheet extrusion molding apparatus according to claim 5, characterized in that: The guide pipe (43) includes an inlet straight pipe (431) and a return bend (432). The return bend (432) is located inside the inlet straight pipe (431). One end of the return bend (432) passes through the side wall of the inlet straight pipe (431). A first sealing bearing (433) is provided on the side wall of the inlet straight pipe (431). One end of the inlet straight pipe (431) is rotatably connected to the inside of the connecting pipe (423) through the first sealing bearing (433).

7. A plastic sheet extrusion molding apparatus according to claim 6, characterized in that: One end of the shaping roller (42) is fixedly connected to the insertion tube (424), and the side wall of the insertion tube (424) is provided with a second sealing bearing (434). The insertion tube (424) is rotatably connected to the inside of the return bend (432) through the second sealing bearing (434).

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