Extrusion equipment for polyester film production

Abstract

The utility model discloses extrusion equipment for polyester film production, and relates to the technical field of polyester film sheet production equipment, the extrusion equipment comprises a raw material cylinder, a rotating rod, two scraping plates and two telescopic rods, the rotating rod is rotatably arranged in the raw material cylinder, the two telescopic rods are respectively a first rod body and a second rod body, and the two scraping plates are respectively arranged in the first rod body and the second rod body. The scraping plates include the first scraping plate and the second scraping plate, the other end of the first rod body is connected with the first scraping plate, the other end of the second rod body is connected with the second scraping plate, a first sliding groove is formed in the first scraping plate, and one end of the second scraping plate is connected with the first sliding groove in a sliding fit mode. The length of the first rod body and the length of the second rod body are adjusted, and the second scraping plate is in sliding fit in the first sliding groove, so that adjustment of the scraping plate in the two dimensions of the height and the diameter is achieved. And the equipment can flexibly adapt to raw material barrels with different capacities and sizes, so that the requirement of frequently replacing the scraping plate due to the replacement of the raw material barrels is avoided, and the inventory cost and replacement cost of spare parts are reduced.

Description

Technical Field

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

[0002] Polyester film is a polymer plastic film, usually made from polyester resins such as polyethylene terephthalate (PET) or polyethylene terephthalate (PEN). Polyester film has high chemical stability and good chemical resistance, and can resist corrosion from a variety of chemicals. Extrusion equipment used to produce polyester film is widely used in packaging, electronics, construction, automobiles and other fields. For example, in the packaging field, polyester film is used as food packaging and pharmaceutical packaging; in the electronics field, polyester film is used as capacitors and insulating materials. In the medical industry, polyester film is mainly used as medical dressings and medical packaging materials. It has good breathability and wet compress properties, which helps wound healing.

[0003] During the polyester film production process, the raw materials need to be squeezed into the molding device from the inside of the raw material barrel. A large amount of residue will remain on the inner wall of the raw material barrel, which needs to be manually removed by workers. When workers enter or near the raw material barrel for manual cleaning, they may face risks such as mechanical injury, burns, or chemical exposure, especially when the equipment has not completely stopped running.

[0004] In existing solutions, scrapers are typically installed inside the feed drum to clean residue from the inner wall. However, as polyester film production increases or decreases, the amount of material the drum needs to handle also changes accordingly. To accommodate varying production needs, the drum's capacity and size may need to be adjusted, resulting in changes in the inner wall diameter. Whenever the drum's inner wall diameter changes, the corresponding scraper model must be replaced. This replacement process is not only cumbersome but also increases production costs and downtime. Utility Model Content

[0005] The present invention aims to provide an extrusion device for producing polyester film, which solves the technical problem in the prior art that when the inner wall diameter of the raw material barrel changes, the scraper of the corresponding model needs to be replaced. This replacement process is not only cumbersome, but also increases production costs and downtime.

[0006] The technical problem to be solved by the present utility model can be achieved through the following technical solutions: An extrusion equipment for producing polyester film, comprising a base, an extruder body, a raw material barrel, a rotating rod, a scraper and a telescopic rod, wherein the extruder body is fixedly connected to the base, the raw material barrel is communicated with one end of the extruder body, the rotating rod is rotatably arranged in the raw material barrel, a plurality of longitudinally arranged through holes are provided on the outside of the rotating rod, the telescopic rod is provided with two, namely, a first rod body and a second rod body, and one end of the first rod body and the second rod body are both cooperated and arranged in the corresponding through holes, the scraper is provided with two, namely, a first scraper and a second scraper, the other end of the first rod body is fixedly connected to the first scraper, the other end of the second rod body is fixedly connected to the second scraper, the first scraper is provided with a first slide groove in a vertical state, and one end of the second scraper is slidably matched with the first slide groove.

[0007] As a further solution of the present invention: the telescopic rod includes a fixed rod and a movable rod, an external thread is fixed on the outer side of one end of the fixed rod, an internal thread is provided in the through hole that cooperates with the thread of the fixed rod, and a second sliding groove in a horizontal state is provided at the other end of the fixed rod, one end of the movable rod is slidably connected to the first sliding groove, and the other end of the movable rod is fixedly connected to the scraper plate.

[0008] As a further solution of the present invention: the telescopic rod also includes a spring, which is installed in the second sliding groove, one end of the spring abuts against the second sliding groove, and the other end of the spring is fixedly connected to one end of the movable rod.

[0009] As a further solution of the present invention: an end cover is provided at the end of the through hole.

[0010] As a further solution of the present invention: one end of the end cover is threadedly connected to the through hole, and the other end of the end cover is fixedly provided with a stirring rod in a horizontal state.

[0011] As a further solution of the present invention: a rotating motor is fixedly provided on the top of the raw material barrel, and the output end of the rotating motor penetrates the raw material barrel and extends into the interior of the raw material barrel, and is coaxially fixedly connected to the rotating shaft.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The present invention achieves adjustment of the scraper blade in both height and diameter by adjusting the length of the first and second rod bodies, as well as the sliding fit of the second scraper blade within the first chute. This allows the equipment to flexibly handle raw material barrels of varying capacities and sizes, ensuring effective scraping without having to replace the scraper blade, significantly improving the equipment's versatility and flexibility. This eliminates the need for frequent scraper blade replacements due to raw material barrel changes, reducing spare parts inventory and replacement costs. Furthermore, downtime and production interruptions associated with scraper blade replacements are reduced, improving production efficiency. Furthermore, the equipment features a simple structure and facilitates maintenance, reducing the workload and intensity of maintenance personnel.

[0014] 2. A spring is installed between the fixed and movable rods, enabling the telescopic rod to automatically adjust its length. This allows the scraper's position and contact pressure to be adjusted in real time based on changes in the barrel diameter. This adaptive adjustment mechanism significantly enhances the equipment's flexibility and adaptability. Because the scraper maintains the appropriate contact pressure and fit with the barrel's inner wall, it effectively removes residue from the barrel, improving scraping efficiency and product quality.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 It is a three-dimensional structural diagram of an extrusion device for producing polyester film.

[0018] Figure 2 It is a structural sectional view of the raw material barrel in the utility model.

[0019] Figure 3 yes Figure 2 A local enlarged schematic diagram of point A in the middle.

[0020] Figure 4 It is a three-dimensional structural schematic diagram of the scraper plate in the utility model.

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the telescopic rod in the utility model.

[0022] Reference numerals include:

[0023] 1. Base; 2. Extruder body; 3. Raw material barrel; 4. Rotating rod; 5. Scraper; 6. Telescopic rod; 7. First rod body; 8. Second rod body; 9. First scraper; 10. Second scraper; 11. First chute; 12. Fixed rod; 13. Movable rod; 14. Second chute; 15. Spring; 16. End cover; 17. Stirring rod; 18. Rotating motor; 19. Through hole. DETAILED DESCRIPTION

[0024] The following will be combined with the accompanying 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.

[0025] like Figures 1 to 5 As shown, an extrusion equipment for producing polyester film includes a base 1, an extruder body 2, a raw material barrel 3, a rotating rod 4, a scraper 5 and a telescopic rod 6. The extruder body 2 is fixedly connected to the base 1, and the raw material barrel 3 is communicated with one end of the extruder body 2. The rotating rod 4 is rotatably arranged in the raw material barrel 3. A plurality of longitudinally arranged through holes 19 are provided on the outside of the rotating rod 4. There are two telescopic rods 6, namely a first rod body 7 and a second rod body 8, and one end of the first rod body 7 and the second rod body 8 are both cooperated and arranged in the corresponding through holes 19. There are two scrapers 5, namely a first scraper 9 and a second scraper 10. The other end of the first rod body 7 is fixedly connected to the first scraper 9, and the other end of the second rod body 8 is fixedly connected to the second scraper 10. The first scraper 9 is provided with a first slide groove 11 in a vertical state, and one end of the second scraper 10 is slidably connected to the first slide groove 11.

[0026] Specifically, first, according to the increase or decrease in the output of polyester film, a raw material barrel 3 of appropriate capacity and size is selected, and then the first rod body 7 and the second rod body 8 are connected to the corresponding through hole 19 according to the height of the raw material barrel 3. At the same time, as the distance between the first rod body 7 and the second rod body 8 is adjusted, the second scraper 10 slides in the first slide groove 11, so that the height of the scraper plate 5 matches the height of the raw material barrel 3. Finally, the diameter of the raw material barrel 3 adjusts the length of the first rod body 7 and the second rod body 8 to make the scraper plate 5 fit the inner wall of the raw material barrel 3, so that the scraper plate 5 can scrape off the residue on the inner wall of the raw material barrel 3.

[0027] The present invention achieves adjustment of the scraper plate 5 in both height and diameter by adjusting the length of the first rod body 7 and the second rod body 8, as well as the sliding fit of the second scraper plate 10 within the first chute 11. This enables the equipment to flexibly handle raw material barrels 3 of different capacities and sizes, ensuring the scraping effect without having to replace the scraper plate 5, greatly improving the versatility and flexibility of the equipment. This avoids the need for frequent replacement of the scraper plate due to replacement of the raw material barrel 3, thereby reducing the inventory cost and replacement cost of spare parts. At the same time, it reduces downtime and production interruptions caused by replacing the scraper plate, thereby improving production efficiency. Furthermore, the equipment has a simple structure and is easy to maintain, reducing the difficulty and labor intensity of maintenance personnel.

[0028] refer to Figure 5 As shown, in some specific embodiments, in order to achieve the coordinated connection between the telescopic rod 6 and the through hole 19, the telescopic rod 6 includes a fixed rod 12 and a movable rod 13, one end of the fixed rod 12 is fixedly provided with an external thread on the outside, and the through hole 19 is provided with an internal thread that cooperates with the thread of the fixed rod 12, and the other end of the fixed rod 12 is provided with a second slide groove 14 in a horizontal state, one end of the movable rod 13 is slidably connected to the first slide groove 11, and the other end of the movable rod 13 is fixedly connected to the scraper plate 5.

[0029] Specifically, the external threads of the fixed rod 12 and the internal threads of the through hole 19 securely and reliably fit together, effectively preventing the telescopic rod 6 from loosening or falling off during use. Furthermore, the sliding motion of the movable rod 13 on the fixed rod 12 remains stable, reducing the risk of the scraper 5 shifting due to vibration or impact.

[0030] refer to Figure 2 and Figure 3 As shown, in some specific embodiments, in order to achieve adaptive adjustment of the length of the telescopic rod 6, the telescopic rod 6 also includes a spring 15, which is installed in the second slide groove 14, one end of the spring 15 abuts against the second slide groove 14, and the other end of the spring 15 is fixedly connected to one end of the movable rod 13.

[0031] Specifically, when the diameter of the raw material barrel 3 changes, the contact pressure between the scraper plate 5 and the inner wall of the raw material barrel 3 will change. If the contact pressure is insufficient, the scraping effect will be affected; if the contact pressure is too high, the raw material barrel 3 or the scraper plate 5 may be damaged. Through the elastic force of the spring 15, the movable rod 13 can automatically adjust its position in the chute to a certain extent, thereby changing the contact pressure and fit between the scraper plate 5 and the inner wall of the raw material barrel 3. Specifically, when the diameter of the raw material barrel 3 increases, the elastic force of the spring 15 will push the movable rod 13 outward, so that the scraper plate 5 fits the inner wall of the raw material barrel 3; conversely, when the diameter of the raw material barrel 3 decreases, the elastic force of the spring 15 will decrease, allowing the movable rod 13 to move appropriately inward in the chute, thereby preventing the scraper plate 5 from pressing too tightly against the inner wall of the raw material barrel 3.

[0032] A spring 15 is installed between the fixed rod 12 and the movable rod 13. This spring 15 enables the telescopic rod 6 to automatically adjust its length, allowing the position and contact pressure of the scraper 5 to be adjusted in real time according to changes in the diameter of the raw material barrel 3. This adaptive adjustment mechanism greatly enhances the flexibility and adaptability of the equipment. Because the scraper 5 can always maintain appropriate contact pressure and fit with the inner wall of the raw material barrel 3, it can more effectively scrape away residue from the inner wall of the raw material barrel 3, improving scraping efficiency and product quality.

[0033] refer to Figure 4 As shown, in some specific embodiments, to prevent the raw material in the raw material barrel 3 from entering the through hole 19, an end cap 16 is provided at the end of the through hole 19 to ensure that there are no gaps or holes for the raw material to penetrate. The end cap 16 can be installed at the end of the through hole 19 by threading, snap fastening, or other reliable fixing methods to facilitate installation, removal, and cleaning.

[0034] refer to Figure 5 As shown, in some specific embodiments, to enable the rotating shaft to stir the raw materials within the raw material barrel 3 during rotation, one end of the end cap 16 is threadedly connected to the through hole 19, and the other end of the end cap 16 is fixedly provided with a horizontal stirring rod 17. Specifically, in the polyester film production process, uniform mixing of the raw materials is crucial to the quality and performance of the final product. The stirring rod 17 rotates with the rotation of the end cap 16, thereby driving the raw materials within the raw material barrel 3 to flow and mix, ensuring the uniformity and consistency of the raw materials.

[0035] refer to Figure 2 As shown, in some specific embodiments, in order to achieve rotation control of the rotating shaft, a rotating motor 18 is fixedly installed on the top of the raw material barrel 3. The output end of the rotating motor 18 passes through the raw material barrel 3 and extends into the interior of the raw material barrel 3, and is coaxially fixedly connected to the rotating shaft.

[0036] Specifically, by controlling the start and stop and speed of the rotating motor 18, the rotation control of the rotating shaft can be easily achieved. When the rotating shaft rotates, one side of the scraper plate 5 will scrape against the inner wall of the raw material barrel 3 to remove residues attached to the inner wall.

[0037] To facilitate understanding of the embodiments of this solution by those skilled in the art, the working principle of the embodiments of this solution will now be described in conjunction with specific application scenarios:

[0038] In actual use, select an appropriate raw material barrel 3 based on production requirements and install it on the extruder body 2. Adjust the length of the telescopic rod 6 and the position of the scraper 5 according to the height and diameter of the raw material barrel 3, ensuring that the scraper 5 fits tightly against the inner wall of the raw material barrel 3. Install the end cap 16 and stirring rod 17, ensuring that the stirring rod 17 can rotate with the end cap 16.

[0039] When the rotary motor 18 is activated, its output drives the rotating shaft to rotate. As the shaft rotates, the stirring rod 17 rotates along with the end cap 16, stirring and mixing the raw materials within the raw material barrel 3. As the shaft rotates, one side of the scraper 5 contacts the inner wall of the raw material barrel 3, scraping away any residue adhering to the inner wall. The spring 15 in the telescopic rod 6 automatically adjusts the position of the movable rod 13 based on changes in the diameter of the raw material barrel 3, maintaining appropriate contact pressure and fit between the scraper 5 and the inner wall of the raw material barrel 3.

[0040] After stirring and scraping, the raw materials are evenly mixed and pushed to the extruder body 2 for further processing. The extruder body 2 heats the raw materials and extrude them into polyester film.

[0041] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. An extrusion device for producing polyester film, comprising a base (1), an extruder body (2) and a raw material barrel (3), wherein the extruder body (2) is fixedly connected to the base (1), and the raw material barrel (3) is connected to one end of the extruder body (2), characterized in that: The invention also includes a rotating rod (4), a scraper plate (5) and a telescopic rod (6), wherein the rotating rod (4) is rotatably arranged in the raw material barrel (3), and a plurality of longitudinally arranged through holes (19) are provided on the outer side of the rotating rod (4). The telescopic rod (6) is provided with two, namely, a first rod body (7) and a second rod body (8), and one end of the first rod body (7) and the second rod body (8) are both matched and arranged in the corresponding through holes (19). The scraper plate (5) is provided with two, namely, a first scraper plate (9) and a second scraper plate (10). The other end of the first rod body (7) is fixedly connected to the first scraper plate (9), and the other end of the second rod body (8) is fixedly connected to the second scraper plate (10). The first scraper plate (9) is provided with a first sliding groove (11) in a vertical state, and one end of the second scraper plate (10) is slidably matched with the first sliding groove (11).

2. The polyester film extrusion equipment according to claim 1, characterized in that: The telescopic rod (6) includes a fixed rod (12) and a movable rod (13), one end of the fixed rod (12) is fixedly provided with an external thread on the outside, the through hole (19) is provided with an internal thread that matches the thread of the fixed rod (12), the other end of the fixed rod (12) is provided with a second sliding groove (14) in a horizontal state, one end of the movable rod (13) is slidably connected to the first sliding groove (11), and the other end of the movable rod (13) is fixedly connected to the scraper plate (5).

3. The polyester film extrusion equipment according to claim 2, characterized in that: The telescopic rod (6) further includes a spring (15), which is installed in the second slide groove (14). One end of the spring (15) abuts against the second slide groove (14), and the other end of the spring (15) is fixedly connected to one end of the movable rod (13).

4. The polyester film production extrusion equipment according to claim 1, characterized in that: An end cap (16) is provided at the end of the through hole (19).

5. The extrusion equipment for producing polyester film according to claim 4, characterized in that: One end of the end cover (16) is threadedly connected to the through hole (19), and the other end of the end cover (16) is fixedly provided with a stirring rod (17) in a horizontal state.

6. The extrusion equipment for producing polyester film according to claim 1, characterized in that: A rotating motor (18) is fixedly provided on the top of the raw material barrel (3), and an output end of the rotating motor (18) passes through the raw material barrel (3) and extends into the interior of the raw material barrel (3), and is coaxially fixedly connected to the rotating shaft.

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