Slice casting machine for PET printing film production

Abstract

The utility model discloses a piece casting machine for producing a PET (Polyethylene Terephthalate) printing film, relates to the field of piece casting of the PET printing film, and aims to solve the problems that during piece casting of the existing PET printing film, blanking is easy to be carried out at one point from a blanking roller to a piece casting roller, the non-uniform phenomenon of more materials in the middle and less materials on two sides occurs, the regularity at the edge is poor during forming, and the production efficiency is high. And more materials are cut in the later cutting process, and waste is serious. A casting piece roller is arranged in the cooling box, a guide sleeve is arranged outside one side of the casting piece roller, a vertical plate is arranged at one end of the guide sleeve, and a discharging seat is arranged on one side of the vertical plate; the feeding device comprises a feeding base, and further comprises a curve material guiding inner container which is arranged in the feeding base, the interior of the curve material guiding inner container is hollow, a feeding port is formed in one side of the feeding base, and the feeding port communicates with the interior of the curve material guiding inner container; and the casting piece groove is formed in the inner wall of the guide sleeve, the casting piece groove and the guide sleeve are of an integrated structure, and a concentration base is arranged at the lower end of the discharging base.

Description

Technical Field

[0001] The utility model relates to the technical field of PET printing film casting, in particular to a casting machine for producing PET printing films. Background Art

[0002] PET printing film, also known as high temperature resistant polyester film, is made of polyethylene terephthalate as raw material. It is made into thick sheets by extrusion and then biaxially stretched to form a film material. When making thick sheets, a casting machine is used for extrusion and cooling.

[0003] For example, the Chinese authorized patent with announcement number CN209063363U (a rapid prototyping device for acid, alkali and high temperature resistant PET film casting): comprises a cooling trough and a casting roller, a support rod is fixedly provided on one side of the cooling trough, a crossbeam is fixedly provided on the top of the support rod, a die head is fixedly installed on the middle part of the bottom end of the crossbeam, the casting roller is fixedly connected to the inner walls of both sides of the cooling trough through connecting shafts provided on both sides, the liquid outlet of the die head is fixedly connected to the top of the film guide rail covering two-thirds of the circular surface of the casting roller, the top of the cooling trough is fixedly connected to the first stripping roller through the connecting rod, the inside of the cooling trough is fixedly provided with a second stripping roller, and one side of the support rod is fixedly installed with two cooling boxes. The utility model provides a rapid prototyping device for acid, alkali and high temperature resistant PET film casting, which adopts a combination of air cooling and water cooling, thereby accelerating the cooling speed of the PET molten fluid and improving the cooling effect, while also accelerating the molding speed of the casting and improving the quality of the casting.

[0004] However, when the existing PET printing film is cast, it is easy to feed the material to the casting roller at one point, resulting in an uneven phenomenon with more material in the middle and less material on both sides. The edges are not neat during molding, and more material will be cut during the later cutting, resulting in serious waste. Therefore, it does not meet the existing needs. We have proposed a casting machine for PET printing film production. Utility Model Content

[0005] The utility model aims to provide a casting machine for producing PET printing films, so as to solve the problem in the above-mentioned background technology that when the existing PET printing films are cast, the material is easily fed to the casting roller at one point, resulting in an uneven phenomenon of more material in the middle and less material on both sides, poor uniformity at the edges during molding, and more material will be cut during the later cutting, resulting in serious waste.

[0006] To achieve the above object, the utility model provides the following technical solution: a casting machine for producing PET printing film, comprising: a cooling box, a casting roller is arranged inside the cooling box, a guide sleeve is arranged outside one side of the casting roller, a vertical plate is arranged at one end of the guide sleeve, and a material unloading seat is arranged on one side of the vertical plate;

[0007] Also includes:

[0008] A curved material introduction inner container is arranged inside the material discharge seat, and the interior of the curved material introduction inner container is hollow. A feeding port is arranged on one side of the material discharge seat, and the feeding port is communicated with the interior of the curved material introduction inner container;

[0009] The casting sheet groove is arranged on the inner wall of the guide sleeve, and the casting sheet groove and the guide sleeve are an integral structure.

[0010] Preferably, a centralized base is provided at the lower end of the material discharge seat, and the centralized base and the material discharge seat are an integrated structure, and the interior of the centralized base is hollow.

[0011] Preferably, a fixing beam is provided at the upper end of the material discharge seat, fixing plates are provided on both sides of the material discharge seat, and the material discharge seat is threadedly connected to the fixing beam via external bolts of the fixing plates.

[0012] Preferably, a support frame is welded to the lower end of the guide sleeve, fixing bolts are provided at both ends of the support frame, and the support frame is threadedly connected to the cooling box via the fixing bolts.

[0013] Preferably, a cooling plate is provided at the upper end of one side of the cooling box, and the cooling plate is welded to the cooling box, a high-pressure nozzle is provided on one side of the cooling plate, a water pump device is provided on one side of the cooling box, and the water pump device and the cooling plate are connected through a water pipe.

[0014] Preferably, a guide seat is provided on the other side of the cooling box, a guide roller is provided on the upper end of the guide seat, and two guide rollers are provided.

[0015] Preferably, a rotating shaft is provided at the center of both ends of the casting roller, a ball bearing is provided outside the rotating shaft, and the casting roller is rotatably connected to the cooling box through the ball bearing externally connected to the rotating shaft.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The utility model arranges a curved material introduction liner inside the material discharging seat, and the PET molten high-temperature fluid enters the material discharging seat from the feed port. The curved material introduction liner is used to increase the passing path of the fluid, so that it has time to fill the curved material introduction liner and evenly falls on the surface of the casting roller through the guide sleeve, avoiding the phenomenon of more in the middle and less on both sides, thereby improving the uniformity. In this way, the edges are well-aligned during molding, and less can be cut during the later cutting. The problem that the existing PET printing film is easily discharged to the casting roller at one point during casting, resulting in more material in the middle and less material on both sides, and the edge uniformity is poor during molding, so more will be cut during the later cutting, resulting in serious waste.

[0018] 2. A cooling plate with a high-pressure nozzle installed is arranged at the upper end of one side of the cooling box. The water pump device is connected to the cooling plate by a water pipe. The water inside the cooling box is guided to the cooling plate by the water pump device and sprayed out from the high-pressure nozzle to cool the guide sleeve, thereby cooling the fluid and achieving initial cooling. The fluid is initially formed, and the forming efficiency is improved. The flow of water has a circulation effect on the water inside the cooling box, so that the heat exchange between the upper layer of water and the lower layer of water is more uniform, thereby improving the cooling effect of the thick sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the front view structure of the connection between the casting roller and the guide sleeve of the utility model;

[0021] Figure 3 This is a schematic diagram of the inner wall structure of the guide sleeve of the utility model;

[0022] Figure 4 This is a schematic diagram of the internal structure of the material feeder seat of the utility model;

[0023] In the figure: 1. Cooling box; 2. Guide seat; 3. Water pump device; 4. Casting roller; 5. Guide sleeve; 6. Vertical plate; 7. Unloading seat; 8. Fixed beam; 9. Feed inlet; 10. Cooling plate; 11. High-pressure nozzle; 12. Guide roller; 13. Support frame; 14. Fixing bolt; 15. Rotating shaft; 16. Ball bearing; 17. Casting groove; 18. Curved guide liner; 19. Fixed plate; 20. Central base. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] See also Figure 1-4 The utility model provides an embodiment: a casting machine for producing PET printing film, comprising: a cooling box 1, a casting roller 4 is arranged inside the cooling box 1, a guide sleeve 5 is arranged outside one side of the casting roller 4, a vertical plate 6 is arranged at one end of the guide sleeve 5, and a material unloading seat 7 is arranged on one side of the vertical plate 6;

[0026] Also includes:

[0027] The curved material introduction inner liner 18 is arranged inside the material discharge seat 7, and the interior of the curved material introduction inner liner 18 is hollow. A feed port 9 is arranged on one side of the material discharge seat 7, and the feed port 9 is communicated with the interior of the curved material introduction inner liner 18;

[0028] The casting groove 17 is arranged on the inner wall of the guide sleeve 5 , and the casting groove 17 and the guide sleeve 5 are an integral structure.

[0029] The PET molten high-temperature fluid enters the discharge seat 7 from the feed port 9, and the curved feed liner 18 is used to increase the fluid's passage path, so that it has time to fill the curved feed liner 18, and falls evenly on the surface of the casting roller 4 through the guide sleeve 5, avoiding the phenomenon of more in the middle and less on the sides, thereby improving uniformity. In this way, the edges are neat during molding, and less can be cut during later cutting, reducing waste.

[0030] See also Figure 1 , 2 A centralized base 20 is provided at the lower end of the material discharge seat 7, and the centralized base 20 and the material discharge seat 7 are an integrated structure, and the interior of the centralized base 20 is hollow to facilitate the outflow of the fluid.

[0031] See also Figure 1 A fixed beam 8 is provided at the upper end of the unloading seat 7, and fixed plates 19 are provided on both sides of the unloading seat 7. The unloading seat 7 is threadedly connected to the fixed beam 8 through external bolts of the fixed plates 19, which is convenient for disassembly, cleaning and replacement of the unloading seat 7, thereby improving convenience.

[0032] See also Figure 1 , 2 A support frame 13 is welded at the lower end of the guide sleeve 5, and fixing bolts 14 are provided at both ends of the support frame 13. The support frame 13 is threadedly connected to the cooling box 1 through the fixing bolts 14 to support the guide sleeve 5, and it is also convenient for the guide sleeve 5 to be disassembled and replaced, thereby improving convenience.

[0033] See also Figure 1 A cooling plate 10 is provided at the upper end of one side of the cooling box 1, and the cooling plate 10 is welded to the cooling box 1, a high-pressure nozzle 11 is provided on one side of the cooling plate 10, a water pump device 3 is provided on one side of the cooling box 1, and the water pump device 3 is connected to the cooling plate 10 through a water pipe. The water pump device 3 is used to guide the water inside the cooling box 1 into the cooling plate 10, and sprayed from the high-pressure nozzle 11 to cool the guide sleeve 5, thereby cooling the fluid, achieving preliminary cooling, and making the fluid initially formed, thereby improving the forming efficiency. The water flow has a circulation effect on the water inside the cooling box 1, so that the heat exchange between the upper layer of water and the lower layer of water is more uniform, thereby improving the cooling effect of the thick sheet.

[0034] See also Figure 1 A guide seat 2 is provided on the other side of the cooling box 1, and a guide roller 12 is provided on the upper end of the guide seat 2. There are two guide rollers 12. The cooled thick sheet is led out of the cooling box 1 through the guide rollers 12, thereby completing the casting operation.

[0035] See also Figure 1 , 2 A rotating shaft 15 is provided at the center of both ends of the casting roller 4, a ball bearing 16 is provided outside the rotating shaft 15, and the casting roller 4 is rotatably connected to the cooling box 1 through the rotating shaft 15 and the external ball bearing 16 to realize the rotation of the casting roller 4.

[0036] Working principle: When in use, the PET molten high-temperature fluid enters the discharge seat 7 from the feed port 9, and the curved feed liner 18 is used to improve the fluid's passing path so that it has time to fill the curved feed liner 18, and falls evenly on the surface of the casting roller 4 through the guide sleeve 5 to avoid the phenomenon of more in the middle and less on both sides, thereby improving uniformity. The fluid fills the casting groove 17 and continues to fall to form a thick sheet, and the water pump device 3 is used to guide the water inside the cooling box 1 to the cooling plate 10, and sprayed from the high-pressure nozzle 11 to cool the guide sleeve 5, thereby cooling the fluid. Because of the continuous impact of the fluid, the casting roller 4 rotates, thereby driving the thick sheet to rotate into the cooling box 1, which has a secondary cooling effect. The cooled thick sheet is led out of the cooling box 1 through the guide roller 12, thereby completing the casting operation. In this way, the edges are neat during molding, and less can be cut during later cutting, reducing waste.

[0037] It is obvious 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 features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A casting machine for producing PET printing film, comprising a cooling box (1), a casting roller (4) being arranged inside the cooling box (1), a guide sleeve (5) being arranged outside one side of the casting roller (4), a vertical plate (6) being arranged at one end of the guide sleeve (5), and a material discharge seat (7) being arranged at one side of the vertical plate (6); Features: Also includes: A curved material introduction inner liner (18) is arranged inside the material discharge seat (7), and the interior of the curved material introduction inner liner (18) is hollow; a feed port (9) is provided on one side of the material discharge seat (7), and the feed port (9) is communicated with the interior of the curved material introduction inner liner (18); The casting sheet groove (17) is arranged on the inner wall of the guide sleeve (5), and the casting sheet groove (17) and the guide sleeve (5) are an integral structure.

2. A casting machine for producing PET printing film according to claim 1, characterized in that: A central base (20) is provided at the lower end of the material discharge seat (7), and the central base (20) and the material discharge seat (7) are an integral structure, and the interior of the central base (20) is hollow.

3. A casting machine for producing PET printing film according to claim 1, characterized in that: A fixing beam (8) is provided at the upper end of the material discharge seat (7), fixing plates (19) are provided on both sides of the material discharge seat (7), and the material discharge seat (7) is threadedly connected to the fixing beam (8) via external bolts of the fixing plates (19).

4. A casting machine for producing PET printing film according to claim 1, characterized in that: A support frame (13) is welded to the lower end of the guide sleeve (5), fixing bolts (14) are provided at both ends of the support frame (13), and the support frame (13) is threadedly connected to the cooling box (1) via the fixing bolts (14).

5. The casting machine for producing PET printing film according to claim 1, characterized in that: A cooling plate (10) is provided at the upper end of one side of the cooling box (1), and the cooling plate (10) is welded to the cooling box (1), a high-pressure nozzle (11) is provided on one side of the cooling plate (10), and a water pump device (3) is provided on one side of the cooling box (1), and the water pump device (3) and the cooling plate (10) are connected via a water pipe.

6. A casting machine for producing PET printing film according to claim 1, characterized in that: A guide seat (2) is provided on the other side of the cooling box (1), and a guide roller (12) is provided at the upper end of the guide seat (2), and two guide rollers (12) are provided.

7. A casting machine for producing PET printing film according to claim 1, characterized in that: A rotating shaft (15) is provided at the center of both ends of the casting roller (4), a ball bearing (16) is provided outside the rotating shaft (15), and the casting roller (4) is rotatably connected to the cooling box (1) via the rotating shaft (15) and the externally connected ball bearing (16).

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