Multi-color extrusion device for a striped-effect plastic sheet

Abstract

The utility model relates to the technical field of plastic plate processing equipment discloses a multicolor extrusion device for striped effect plastic plate, and the device comprises a shell, a shell body and a cooling and pressing assembly arranged in the shell, further comprises a water removal assembly, the water removal assembly comprises a fixed plate, a sponge, a chute and a sliding block, the chute is fixed on the shell, the sliding block is fixed on the fixed plate, the sponge is installed on the fixed plate and abuts against the surface of the cooling roller, and the sliding block and the chute constitute a sliding detachable connection, the water removal assembly can effectively absorb the condensed water on the surface of the cooling roller, the surface quality of the plastic plate is ensured, the structure makes the whole assembly be quickly disassembled, the maintenance efficiency of cleaning or replacing the sponge is greatly improved, the continuous production stability of the equipment is enhanced, and the utility model has remarkable practical value.

Description

Technical Field

[0001] This utility model relates to the technical field of plastic sheet processing equipment, and in particular to a multi-color extrusion device for striped effect plastic sheets. Background Technology

[0002] Extrusion molding is a widely used technology in the production of plastic sheets. Specifically, in the manufacture of multi-colored striped effect plastic sheets, molten plastic raw materials are typically passed through an extrusion device and then cooled and shaped. The cooling process is crucial for ensuring dimensional stability and surface quality of the sheets, and low-temperature cooling rollers are commonly used to press and cool the high-temperature plastic preform.

[0003] During this cooling process, because the surface temperature of the cooling roller is much lower than the ambient air temperature, especially in high-humidity production environments, moisture in the air easily condenses into tiny water droplets on the cold roller surface. When the not-fully-cured plastic sheet comes into contact with these water droplets, it can cause quality defects such as watermarks, pitting, or uneven gloss on the sheet surface, seriously affecting the product's appearance and yield. To solve this problem, existing technologies typically place water-absorbing devices, such as fixed sponge blocks, near the cooling roller. However, these devices require frequent cleaning or replacement after a period of use due to water saturation or dust accumulation. In existing equipment structures, these devices are often fixed using bolts or similar methods, making disassembly and installation cumbersome and time-consuming. This not only reduces the convenience of equipment maintenance but also forces production line interruptions, directly impacting overall production efficiency.

[0004] Therefore, this utility model proposes a multi-color extrusion device for striped effect plastic sheets to overcome the shortcomings of the prior art. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a multi-color extrusion device for striped effect plastic sheets, which aims to improve the problems of existing multi-color extrusion devices for striped effect plastic sheets, such as the cooling roller surface being prone to condensation of water droplets due to temperature differences, thus contaminating the surface of the sheet, and the fixed structure of the device used for water absorption, which makes disassembly and maintenance inconvenient and time-consuming.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A multi-color extrusion apparatus for striped effect plastic sheets includes: a housing, a shell, and a cooling and pressing assembly disposed within the housing; and a dewatering assembly. The cooling and pressing assembly includes an upper cooling roller and a lower cooling roller. The dewatering assembly includes a fixed plate, a sponge, a chute, and a slider. The chute is fixed to the inner wall of the housing, the slider is fixed to the fixed plate, the sponge is detachably mounted on the fixed plate, and the dewatering assembly is assembled via a sliding engagement between the slider and the chute, and is disposed on one side of the upper and lower cooling rollers.

[0008] Preferably, the sponge faces and abuts against the surfaces of the upper and lower cooling rollers.

[0009] Preferably, the multicolor extrusion apparatus for striped effect plastic sheets further includes a feeding assembly, the outlet end of which is connected to the inlet end of the cooling and pressing assembly.

[0010] Preferably, the feeding assembly includes a multi-pass feeding plate, a merging plate, and an extrusion plate.

[0011] Preferably, the multicolor extrusion device for striped effect plastic sheets further includes an upper conveyor belt, a lower conveyor belt, and a first motor, the first motor being used to drive the upper and lower conveyor belts to move.

[0012] Preferably, the multicolor extrusion device for striped effect plastic sheets further includes a dividing assembly disposed at the output ends of the upper and lower conveyor belts, the dividing assembly including a cutter and an electric push rod for driving the movement of the cutter.

[0013] Preferably, the cooling and pressing assembly further includes a second motor for driving the upper cooling roller and the lower cooling roller to rotate.

[0014] Preferably, the multicolor extrusion device for the striped effect plastic sheet further includes a fixing frame, the cooling pressing assembly is mounted on the fixing frame, and the fixing frame is fixed inside the housing.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, a slidable and detachable water removal component is provided. The water removal component includes a fixed plate, a sponge, a chute, and a slider that slides with the chute. The sponge is installed on the fixed plate and abuts against the surface of the cooling roller. This solves the problems in the prior art where water droplets condensed on the surface of the cooling roller easily drip and contaminate the board, and the water removal device has a complex structure that is difficult to clean or replace quickly, affecting production efficiency. This achieves the technical effect of effectively absorbing condensate to ensure the surface quality of the plastic board, and enabling quick disassembly and maintenance of the water removal component, thereby improving the convenience of equipment maintenance and the stability of continuous production.

[0017] 2. In this utility model, by integrating the feeding component for introducing multi-colored raw materials, the cooling and pressing component for cooling and shaping, the conveyor belt for conveying, and the dividing component for cutting into an integrated design, the problems of scattered processes, poor connection, and low degree of automation in the production process of multi-colored striped plastic sheets are solved. This achieves the technical effects of compact structure, continuous process flow, and automated production process, thereby improving the overall production efficiency and product consistency. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of a multi-color extrusion device for striped effect plastic sheets proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the housing of a multicolor extrusion device for striped effect plastic sheets proposed in this utility model;

[0020] Figure 3 This is a cross-sectional schematic diagram of the outer shell of a multi-color extrusion device for striped effect plastic sheets proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the fixing plate of a multicolor extrusion device for striped effect plastic sheets proposed in this utility model;

[0022] Figure 5 This is a cross-sectional schematic diagram of the feeding assembly of a multi-color extrusion device for striped effect plastic sheets proposed in this utility model.

[0023] Legend:

[0024] 1. Outer shell; 2. Housing; 3. Dewatering assembly; 301. Fixing plate; 302. Sponge; 303. Slide rail; 304. Slider; 4. Lower conveyor belt; 5. First motor; 6. Dividing assembly; 601. Cutter; 602. Electric push rod; 7. Feeding assembly; 701. Multi-pass material plate; 702. Merging plate; 703. Extrusion plate; 8. Cooling and pressing assembly; 801. Second motor; 802. Upper cooling roller; 803. Lower cooling roller; 9. Fixing frame; 10. Upper conveyor belt. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example:

[0027] Please refer to the appendix. Figure 1 - Appendix Figure 5 This utility model provides a multi-color extrusion device for striped plastic sheets, which aims to solve the problems of water droplets condensed on the cooling rollers in existing striped plastic sheet extrusion devices easily contaminating the surface of the sheet and the difficulty in quickly disassembling and maintaining the water removal structure.

[0028] The multicolor extrusion device for striped effect plastic sheets includes a housing 1 and a shell 2. The housing 1 and shell 2 together serve as the mounting base and protective structure of the entire device. The device integrates a feeding assembly 7, a fixing frame 9, a cooling and pressing assembly 8, a dewatering assembly 3, a lower conveyor belt 4, an upper conveyor belt 10, and a dividing assembly 6.

[0029] Specifically, the fixing frame 9 is fixed inside the outer shell 1, providing a stable mounting base for the internal core components. The cooling and pressing assembly 8 is installed on the fixing frame 9. The outlet end of the feeding assembly 7 is connected to the inlet end of the cooling and pressing assembly 8, forming the core processing area for the plastic raw material from melting to pressing and shaping. The lower conveyor belt 4 and the upper conveyor belt 10 are located downstream of the cooling and pressing assembly 8 to receive and transport the shaped plastic sheet. The dividing assembly 6 is located at the output end of the lower conveyor belt 4 and the upper conveyor belt 10 to cut the conveyed plastic sheet to a fixed length. The dewatering assembly 3 is located on one side of the cooling and pressing assembly 8 to perform real-time surface maintenance on the cooling and pressing assembly 8. The above components are arranged sequentially in space and work together to realize the automated production of multi-color striped plastic sheets.

[0030] To solve the above-mentioned technical problems, the core of the technical solution of this embodiment is that the multi-color extrusion device for striped effect plastic sheet also includes a water removal component 3, and the water removal component 3 forms a specific structural fit and connection relationship with the aforementioned outer shell 1 and cooling pressing component 8.

[0031] The core structure will be explained in detail below:

[0032] The device's slide 303 is fixed to the inner wall of the outer casing 1. The slide 303 provides an installation base and guide for the water removal assembly 3. The water removal assembly 3 includes a fixing plate 301. A slider 304 is fixedly connected to one side surface of the fixing plate 301. The shape and size of the slider 304 are adapted to the internal cavity of the slide 303. In the assembled state, the fixing plate 301 slides within the slide 303 via the slider 304. A sponge 302 for water absorption is detachably mounted on the other side surface of the fixing plate 301. In the working position, the sponge... The sponge 302 faces and abuts against the surfaces of the upper cooling roller 802 and the lower cooling roller 803 of the cooling pressing assembly 8, and is used to absorb water droplets condensed on the roller surface in real time to prevent water droplets from dripping and affecting the plastic sheet. This sliding and detachable connection structure of the slider and the chute ensures that when the sponge 302 needs to be cleaned or replaced, the staff can directly pull out the fixing plate 301 along with the sponge 302 on it along the guide direction of the chute 303, and slide it back in after replacement, realizing the quick disassembly and maintenance of the entire water removal assembly 3.

[0033] Based on the above embodiments, the present invention may further include the following preferred technical solutions:

[0034] In a preferred embodiment, the device further includes a feeding assembly 7, the outlet end of which is fixedly connected to the inlet end of the cooling and pressing assembly 8, providing the cooling and pressing assembly 8 with uncured multi-colored plastic raw materials. The interior of the feeding assembly 7 includes, from front to back, a multi-pass material plate 701, a merging plate 702, and an extrusion plate 703. The multi-pass material plate 701 is provided with multiple independent feeding channels. The merging plate 702 is connected to the rear end of the multi-pass material plate 701, and the extrusion plate 703 is connected to the rear end of the merging plate 702.

[0035] In a preferred embodiment, in order to provide stable support for the cooling pressing assembly 8 and drive its operation, the device also includes a fixing frame 9 and a second motor 801. The fixing frame 9 is fixedly connected to the inside of the housing 1, the cooling pressing assembly 8 is mounted on the fixing frame 9, and the second motor 801 is fixed to the fixing frame 9 or the housing 1. Its output shaft is connected to the upper cooling roller 802 and the lower cooling roller 803 respectively through a transmission mechanism to drive the upper cooling roller 802 and the lower cooling roller 803 to rotate synchronously relative to each other.

[0036] In a preferred embodiment, to achieve automated conveying and cutting of the cooled and formed plastic sheet, the device further includes a lower conveyor belt 4, an upper conveyor belt 10, a first motor 5, and a dividing component 6. The lower conveyor belt 4 and the upper conveyor belt 10 are arranged parallel to each other at the output end of the cooling and pressing component 8 for clamping and conveying the plastic sheet. The first motor 5 drives the lower conveyor belt 4 and the upper conveyor belt 10 to move through a transmission system. The dividing component 6 is located at the end of the lower conveyor belt 4 and the upper conveyor belt 10. The dividing component 6 includes a cutter 601 and an electric push rod 602. The housing of the electric push rod 602 is fixedly connected to the outer shell 1 or the fixing frame 9, and the end of its telescopic rod is fixedly connected to the cutter 601 to drive the cutter 601 to perform reciprocating motion perpendicular to the conveying direction of the plastic sheet.

[0037] Working principle: When the equipment starts, the feeding assembly 7, connected to the external plastic raw material heating device, begins to work. Molten plastic raw materials of different colors enter through the independent channels of the multi-stage material plate 701, converge side by side at the merging plate 702, and then are squeezed and adhered to each other under the action of the extrusion plate 703, forming a molten plastic preform with parallel stripe effect. The second motor 801 drives the upper cooling roller 802 and lower cooling roller 803 of the cooling and pressing assembly 8 to rotate synchronously. The molten plastic preform passes through the gap between them, is pressed and quickly cooled and hardened into a plastic sheet. During this process, because the surface temperature of the upper cooling roller 802 and lower cooling roller 803 is low, water vapor in the air will condense into water droplets. At this time, the water removal assembly 3 set on one side plays its role, and its sponge Sponge 302 is tightly pressed against the roller surface, absorbing water droplets in real time, thus preventing water droplets from dripping and contaminating the surface of the board, ensuring product quality. When sponge 302 needs to be replaced, the operator does not need to stop the machine for a long time. They only need to pull out the fixing plate 301 along the slide 303 along with the slider 304 on it. After replacement, it can be quickly slid back into place, greatly improving maintenance efficiency. The cooled and shaped plastic board is clamped and transported forward by the upper conveyor belt 10 and the lower conveyor belt 4 driven by the first motor 5. Finally, the electric push rod 602 of the dividing component 6 drives the cutter 601 to cut it according to the preset length. Through this synergistic effect of the water removal component 3 and the cooling and pressing component 8, this utility model effectively solves the problems of product quality defects caused by condensation and inconvenient maintenance of the water removal structure in the prior art.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-color extrusion apparatus for striped effect plastic sheets, comprising a housing (1), a shell (2), and a cooling and pressing assembly (8) disposed within the housing (1), the cooling and pressing assembly (8) comprising an upper cooling roller (802) and a lower cooling roller (803), characterized in that, The device further includes: A water removal component (3) is disposed on one side of the upper cooling roller (802) and the lower cooling roller (803) for absorbing water droplets condensed on the surface of the upper cooling roller (802) and the lower cooling roller (803); The water removal component (3) includes a fixed plate (301), a sponge (302), a chute (303), and a slider (304); The groove (303) is fixed to the inner wall of the outer shell (1), the slider (304) is fixed to the fixing plate (301), the sponge (302) is detachably installed on the fixing plate (301), and the slider (304) is slidably engaged in the groove (303).

2. The multi-color extrusion apparatus for striped effect plastic sheets according to claim 1, characterized in that: The sponge (302) faces and abuts against the surfaces of the upper cooling roller (802) and the lower cooling roller (803).

3. The multi-color extrusion apparatus for striped effect plastic sheets according to claim 1, characterized in that: The device also includes a feeding assembly (7) for conveying multi-colored molten plastic raw materials, the outlet end of which is connected to the inlet end of the cooling and pressing assembly (8).

4. The multi-color extrusion apparatus for striped effect plastic sheets according to claim 3, characterized in that: The feeding assembly (7) includes a multi-pass feed plate (701), a merging plate (702), and an extrusion plate (703).

5. The multi-color extrusion apparatus for striped effect plastic sheets according to claim 1, characterized in that: The device also includes an upper conveyor belt (10) and a lower conveyor belt (4) for conveying the cooled plastic sheet, and a first motor (5) for driving the upper conveyor belt (10) and the lower conveyor belt (4) to move.

6. The multi-color extrusion apparatus for striped effect plastic sheets according to claim 5, characterized in that: The device also includes a dividing assembly (6) disposed at the output ends of the upper conveyor belt (10) and the lower conveyor belt (4), the dividing assembly (6) including a cutter (601) and an electric push rod (602) for driving the cutter (601) to move.

7. The multi-color extrusion apparatus for striped effect plastic sheets according to claim 1, characterized in that: The cooling and pressing assembly (8) also includes a second motor (801) for driving the upper cooling roller (802) and the lower cooling roller (803) to rotate.

8. The multi-color extrusion apparatus for striped effect plastic sheets according to claim 1, characterized in that: The device also includes a mounting bracket (9), on which the cooling and pressing assembly (8) is mounted, and the mounting bracket (9) is fixed inside the outer casing (1).

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