An extrusion cleaning mechanism for polyester film production

Abstract

The utility model discloses an extrusion cleaning mechanism for polyester film production, including an extrusion die, wherein the extrusion die is provided with an upper die and a lower die with clearance fit, an extrusion port is formed between the upper die and the lower die, and a collection box is provided on the upper die and the lower die respectively, and a notch corresponding to the position of the extrusion port is provided in the collection box, and a heating plate is provided at the extrusion port of the upper die and the lower die. By providing correspondingly distributed heating plates near the extrusion ports of the upper die and the lower die, the heating plates heat and raise the temperature of the upper die and the lower die near the extrusion port, so that the attachments extruded from the extrusion port will not cool and solidify, and with the extrusion production of the extrusion die, the continuously accumulated attachments will be squeezed from the notch to flow into the collection box, and by regularly replacing the collection box, the extrusion attachments can be automatically and real-time cleaned up in the startup state, thereby improving the efficiency and safety of attachment cleaning, and not affecting the normal production and processing of the film.

Description

Technical Field

[0001] The utility model relates to the technical field of film production, in particular to an extrusion cleaning mechanism used for polyester film production. Background Art

[0002] When producing polyester film, the raw materials need to be hot-melted first, and then the high-pressure molten material is extruded from the mold, and then calendered by the calendering roller, and finally processed into a finished film. However, when the high-pressure molten material is extruded from the mold, it is easy to adhere to the die opening (extrusion port) of the mold, and with the long-term extrusion production of the film, the attachments at the die opening will continue to accumulate and increase, thereby affecting the production quality of the film. Therefore, the attachments need to be cleaned regularly. The traditional cleaning method is to manually use a blade to scrape and clean it little by little in the shutdown state, but this cleaning method has low cleaning efficiency, and is difficult and unsafe to operate; currently, there is also a scraper that can move back and forth on the equipment, which can automatically clean the attachments at the die opening by the scraper when the machine is turned on, but when cutting and cleaning the attachments, the attachments are easy to fall on the film material, and using a scraper to clean the attachments is also easy to scratch the film material, affecting the subsequent film processing quality. Utility Model Content

[0003] The purpose of the utility model is to overcome the above-mentioned deficiencies of the prior art and provide an extrusion cleaning mechanism for polyester film production.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] An extrusion cleaning mechanism for polyester film production comprises an extrusion die, wherein the extrusion die is provided with an upper die and a lower die with clearance fit, an extrusion port is formed between the upper die and the lower die, a collecting box is provided on the upper die and the lower die respectively, a notch is provided in the collecting box corresponding to the position of the extrusion port, and a heating plate is provided at the extrusion port of the upper die and the lower die.

[0006] Preferably, the collecting box comprises a bottom plate and a cover plate, the bottom plate is arranged close to the heating plate, and a flow channel connecting a notch and the inside of the collecting box is provided between the bottom plate and the cover plate.

[0007] Preferably, the bottom plate is provided with an inner groove corresponding to the flow channel and a receiving cavity located inside the flow channel, and a scraper is fitted on the inner groove, and the scraper can move toward the receiving cavity side.

[0008] Preferably, a mounting plate is provided on the cover plate, a driving member is mounted on the mounting plate, and an output end of the driving member is connected to the scraper to drive the scraper to move back and forth.

[0009] Preferably, the cover plate is provided with a buckle plate capable of opening the collection box.

[0010] Preferably, the two heating plates are distributed vertically on the upper and lower sides of the extrusion outlet.

[0011] Preferably, the upper mold and the lower mold are respectively provided with grooves, and the two heating plates are correspondingly installed in the grooves.

[0012] Preferably, the upper die and the lower die are provided with card slots in a transverse direction, and the collection box is provided with card blocks adapted to the card slots.

[0013] Preferably, the upper die and the lower die are respectively provided with arc segments at the extrusion outlet, and the arc segments extend to the notch.

[0014] Preferably, the extrusion die is provided with a feed port, and the feed port and the extrusion port are arranged at two ends of the extrusion die opposite to each other.

[0015] Preferably, the machine body includes a door panel, and the door panel can be rotated to open or close the inner container.

[0016] The beneficial effects of the utility model are:

[0017] 1. By setting corresponding heating plates near the extrusion ports of the upper die and the lower die, the heating plates heat the upper die and the lower die near the extrusion ports, so that the attachments extruded from the extrusion ports will not cool and solidify, and with the extrusion production of the extrusion die, the continuously accumulated attachments will be squeezed from the notch into the collection box. By regularly replacing the collection box, the extrusion attachments can be automatically and real-time cleaned when the machine is turned on, which improves the efficiency and safety of attachment cleaning without affecting the normal production and processing of the film;

[0018] 2. By setting a scraper in the collection box at the upper mold, the external attachments are first squeezed and flowed to the inner groove of the bottom plate, and then moved to the storage cavity by the scraper, and the attachments on the inner groove are scraped to the storage cavity for collection. In addition, since the heating plate is set close to the bottom plate, the attachments in the collection box will not solidify, so that the attachments in the collection box can be collected and cleaned later;

[0019] 3. By providing guiding arc segments at the extrusion outlets of the upper die and the lower die, the attachments extruded from the extrusion outlet can flow more smoothly to the notch through the arc segments until they flow into the collection box, thereby improving the reliability of the collection box in automatically collecting the attachments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional diagram of the utility model;

[0021] Figure 2 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0022] Figure 3 It is an explosion diagram of the utility model;

[0023] Figure 4 The utility model is a cross-sectional view Figure 1 ;

[0024] Figure 5 for Figure 4 The enlarged schematic diagram of point B in the middle;

[0025] Figure 6 The utility model is a cross-sectional view Figure 2 ;

[0026] Figure 7 The cooperation diagram of the bottom plate and the scraper of the utility model is shown in FIG. Figure 1 ;

[0027] Figure 8 The cooperation diagram of the bottom plate and the scraper of the utility model is shown in FIG. Figure 2 .

[0028] In the figure: extrusion die 1, extrusion port 11, upper die 12, lower die 13, arc segment 14, card slot 15, groove 16, feed port 17, heating plate 2, collecting box 3, bottom plate 31, card block 311, storage cavity 312, inner groove 313, cover plate 32, protrusion 321, buckle plate 322, notch 33, flow channel 34, scraper 4, mounting plate 41, driving member 42. DETAILED DESCRIPTION

[0029] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0030] In the description of this specification, the directions or positional relationships indicated by the terms "up", "down", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or unit referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as a limitation on the present invention.

[0031] like Figures 1 to 8 As shown, an extrusion cleaning mechanism for polyester film production includes an extrusion die 1, wherein the extrusion die 1 is provided with an upper die 12 and a lower die 13 with clearance fit, wherein the upper die 12 and the lower die 13 cooperate with each other to form a die for extruding and processing the polyester film, wherein an extrusion port 11 is formed between the upper die 12 and the lower die 13, wherein the extrusion port 11 is provided in a transversely distributed long strip-shaped opening, wherein a feed port 17 is provided on the extrusion die 1, wherein the feed port 17 is arranged at two ends of the extrusion die 1 opposite to the extrusion port 11, wherein the feed port 17 is used to feed high-pressure molten material into the extrusion die 1, and extrude the preliminarily shaped molten material through the extrusion port 11.

[0032] refer to Figure 3 to Figure 5 As shown, a heating plate 2 is provided at the extrusion port 11 of the upper die 12 and the lower die 13, and the number of the heating plates 2 is two. The upper die 12 and the lower die 13 are respectively provided with grooves 16, and the grooves 16 are recessed inwardly and arranged close to each other. The two heating plates 2 are correspondingly installed in the grooves 16, that is, the two heating plates 2 are distributed on the upper and lower sides of the extrusion port 11, and the heating plates 2 heat the extrusion port 11 near the upper die 12 and the lower die 13 through an electric heating wire, so that the attachments extruded from the extrusion port 11 will not cool and solidify, and thus the attachments at the extrusion port 11 can maintain a molten state that can flow.

[0033] The upper die 12 and the lower die 13 are respectively provided with a collecting box 3, and the two collecting boxes 3 are distributed one by one with the upper die 12 and the lower die 13. The collecting box 3 is provided with a notch 33 corresponding to the position of the extrusion port 11. With the extrusion production of the extrusion die 1, the attachments continuously accumulated at the extrusion port 11 will be squeezed from the notch 33 into the collecting box 3, and then by regularly replacing the collecting box 3, the extrusion attachments can be automatically and real-time cleaned when the machine is turned on.

[0034] Compared with the existing method of manually cleaning or automatically cleaning the deposited attachments with a scraper, the present embodiment can clean the deposited attachments in real time without stopping the machine, thereby improving the efficiency and safety of cleaning the attachments and not affecting the normal production and processing of the film; and the film material will not be scratched when using a scraper to clean the attachments, thereby improving the quality of the finished products of subsequent film processing.

[0035] refer to Figure 2 , Figure 4 , Figure 5 As shown, the upper die 12 and the lower die 13 are respectively provided with arc segments 14 at the extrusion port 11, and the arc segments 14 provide smooth guidance for the extrusion flow of the precipitated attachments. The arc segments 14 extend to the notch 33, so that the attachments extruded from the extrusion port 11 can first flow to the notch 33 until they flow into the collection box 3, so as to improve the reliability of the collection box 3 in automatically collecting the attachments.

[0036] The collecting box 3 includes a bottom plate 31 and a cover plate 32. The bottom plate 31 is arranged close to the heating plate 2, so that the heating plate 2 can also heat the precipitated attachments collected inside the collecting box 3, so that the attachments in the collecting box 3 will not solidify, so as to facilitate the subsequent collection and cleaning of the attachments in the collecting box 3.

[0037] Specifically, the cover plate 32 is provided with a buckle plate 322 capable of opening the collection box 3. When the collection box 3 needs to be cleaned, the collection box 3 is removed from the upper mold 12 or the lower mold 13, and the interior of the collection box 3 is opened through the buckle plate 322, so that the interior of the collection box 3 can be cleaned from the buckle plate 322.

[0038] Furthermore, since the attachments inside the collection box 3 are kept in a non-solidified state by the heating of the heating plate 2, that is, the attachments inside the collection box 3 will not solidify and deteriorate, the attachments inside the collection box 3 can be directly recycled to improve the recycling rate of resources.

[0039] refer to Figure 3 to Figure 8 As shown, a communication gap 33 and a flow channel 34 inside the collecting box 3 are provided between the bottom plate 31 and the cover plate 32. Specifically, a protrusion 321 distributed close to the bottom plate 31 is provided on the cover plate 32, and the protrusion 321 and the bottom plate 31 form a flow channel 34 for the attachment at the extrusion port 11 to flow into the collecting box 3.

[0040] refer to Figure 6 As shown, the collection box 3 installed on the lower mold 13 has a flow channel 34 that is tilted downward, so that the attachments that flow into the flow channel 34 from the notch 33 can automatically flow into the collection box 3 under the action of gravity, thereby realizing automatic collection of the attachments.

[0041] refer to Figure 5 , Figure 7 , Figure 8 As shown, the collection box 3 installed on the upper mold 12 has a flow channel 34 that is inclined upward, and the bottom plate 31 is provided with an inner groove 313 corresponding to the flow channel 34 and a receiving cavity 312 located on the inner side of the flow channel 34. Specifically, the flow channel 34 is provided with an inner groove 313 that is recessed downward, and external attachments flow into the inner groove 313 from the notch 33. The receiving cavity 312 and the notch 33 are distributed on the inner and outer sides of the flow channel 34. The receiving cavity 312 is located in the collection box 3 and is used to store attachments that flow into the collection box 3.

[0042] The inner groove 313 is fitted with a scraper 4. Specifically, the cover plate 32 is provided with a mounting plate 41, and a driving member 42 is installed on the mounting plate 41. The driving member 42 can be a cylinder. The output end of the driving member 42 is connected to the scraper 4 to drive the scraper 4 to move back and forth, so that the scraper 4 can move toward the receiving chamber 312, that is, the external attachments are first squeezed from the notch 33 and flow to the inner groove 313 of the bottom plate 31, and then the attachments on the inner groove 313 are scraped and sent to the receiving chamber 312 by the scraper 4 (refer to Figure 7 , Figure 8 state changes) to enable the collection box 3 on the upper mold 12 to automatically collect the precipitated attachments.

[0043] refer to Figure 3 , Figure 4 , Figure 5 As shown, the upper mold 12 and the lower mold 13 are laterally provided with a card slot 15, and the collection box 3 is provided with a card block 311 adapted to the card slot 15. The collection box 3 is installed on the upper mold 12 or the lower mold 13 through the card block 311 and the card slot 15. The collection box 3 is also provided with bolts fixed to the upper mold 12 or the lower mold 13, and the collection box 3 is locked and fixed by external bolts.

[0044] When the collection box 3 needs to be removed, first unscrew the external bolts, then move the collection box 3 laterally, and remove the collection box 3 from the upper mold 12 or the lower mold 13 to facilitate the replacement operation of the collection box 3.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An extrusion cleaning mechanism for polyester film production, comprising an extrusion die (1), wherein the extrusion die (1) is provided with an upper die (12) and a lower die (13) with clearance fit, and an extrusion port (11) is formed between the upper die (12) and the lower die (13), characterized in that: The upper die (12) and the lower die (13) are respectively provided with a collection box (3), the collection box (3) being provided with a notch (33) corresponding to the position of the extrusion port (11), and the extrusion ports (11) of the upper die (12) and the lower die (13) are provided with a heating plate (2).

2. An extrusion cleaning mechanism for polyester film production as claimed in claim 1, characterized in that: The collection box (3) comprises a bottom plate (31) and a cover plate (32); the bottom plate (31) is arranged close to the heating plate (2); a communication notch (33) and a flow channel (34) inside the collection box (3) are provided between the bottom plate (31) and the cover plate (32).

3. An extrusion cleaning mechanism for polyester film production as claimed in claim 2, characterized in that: The bottom plate (31) is provided with an inner groove (313) corresponding to the flow channel (34) and a receiving cavity (312) located inside the flow channel (34); a scraper (4) is fitted on the inner groove (313); and the scraper (4) is capable of moving toward the receiving cavity (312).

4. An extrusion cleaning mechanism for polyester film production as claimed in claim 3, characterized in that: The cover plate (32) is provided with a mounting plate (41), and a driving member (42) is mounted on the mounting plate (41). The output end of the driving member (42) is connected to the scraper (4) to drive the scraper (4) to move back and forth.

5. An extrusion cleaning mechanism for polyester film production as claimed in claim 2, characterized in that: The cover plate (32) is provided with a buckle plate (322) capable of opening the collection box (3).

6. An extrusion cleaning mechanism for polyester film production as claimed in claim 1, characterized in that: The two heating plates (2) are distributed vertically on the upper and lower sides of the extrusion port (11).

7. An extrusion cleaning mechanism for polyester film production as claimed in claim 1, characterized in that: The upper mold (12) and the lower mold (13) are respectively provided with grooves (16), and the two heating plates (2) are correspondingly installed in the grooves (16).

8. An extrusion cleaning mechanism for polyester film production as claimed in claim 1, characterized in that: The upper die (12) and the lower die (13) are transversely provided with a card slot (15), and the collection box (3) is provided with a card block (311) adapted to the card slot (15).

9. An extrusion cleaning mechanism for polyester film production as claimed in claim 1, characterized in that: The upper die (12) and the lower die (13) are respectively provided with arc sections (14) at the extrusion port (11), and the arc sections (14) extend to the notch (33).

10. An extrusion cleaning mechanism for polyester film production as claimed in claim 1, characterized in that: The extrusion die (1) is provided with a feed port (17), and the feed port (17) and the extrusion port (11) are arranged at two ends of the extrusion die (1) opposite to each other.

Images