Cooling roller for processing plastic film

Abstract

The utility model relates to a cooling roller for processing a plastic film, which comprises a cylinder body, a cooling water cavity is arranged in the cylinder body, and at least four through grooves communicated with the cooling water cavity are arranged at one end of the cylinder body. The diaphragm assembly is arranged in the cylinder body, the diaphragm assembly comprises a middle shaft, diaphragm flaps and sealing pieces, the middle shaft and the cylinder body are coaxially arranged, and the two ends of the middle shaft are fixedly connected with the sealing pieces. The utility model relates to the technical field of plastic film production. According to the cooling roller for processing the plastic film, the cooling water cavity in the cylinder body can be sealed into a plurality of cooling sub-cavities through the arranged diaphragm assembly, and at the moment, water injected into a single cooling sub-cavity can press the adjacent cooling sub-cavities, so that cooling water in the adjacent cooling sub-cavities is extruded out, and subsequent injection of new cooling water is facilitated; therefore, the cooling roller can still keep stable water injection and drainage actions during rotation, and the use of the cooling roller is more stable.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of plastic film production, especially to a cooling roller for processing plastic film. BACKGROUND

[0002] In the plastic film processing, the cooling roller is the key equipment for ensuring the rapid and uniform cooling and setting of the film. According to the different production styles of the plastic film, the use scenarios of the cooling roller are also different. For example, PP is usually at 20-50℃, while PET may need to be lower, such as in the interval of 12-30℃.

[0003] In the prior art, the cooling roller has the running modes of active driving and passive following. The active driving can move more stably, so that the cooling roller will not slide with the plastic film, avoiding uneven stretching of the film. However, due to the active rotation of the cooling roller, the inlet and outlet of the cooling water will move together with the cooling roller, which makes the design of the inlet and outlet of the cooling water difficult and increases the use difficulty of the cooling roller. SUMMARY

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a cooling roller for processing plastic film, so as to solve the technical problems mentioned in the background.

[0005] The above technical purpose of the utility model is achieved by the following technical scheme:

[0006] A cooling roller for processing plastic film comprises a cylinder, a cooling water cavity is formed in the cylinder, and at least four through grooves communicating with the cooling water cavity are formed in one end of the cylinder;

[0007] A diaphragm assembly is arranged in the cylinder and comprises a middle shaft, diaphragm petals and sealing sheets. The middle shaft is coaxially arranged with the cylinder, and the two ends of the middle shaft are fixedly connected with the sealing sheets. One of the sealing sheets near the through groove is provided with an opening corresponding to the position of the through groove, and the diaphragm petals are arranged between the adjacent two openings. One side of the diaphragm petals is fixedly connected with the middle shaft, and the other side of the diaphragm petals is connected with the inner wall of the cooling water cavity, so that the cooling water cavity is formed with cooling sub-cavities corresponding to the through grooves one by one.

[0008] An inlet and outlet joint is arranged at the end of the cylinder where the through grooves are formed, for controlling the inlet and outlet of the cooling water in the cooling sub-cavities.

[0009] Further, the cylinder mainly comprises arc-shaped plates and cylinder covers. The number of the arc-shaped plates is equal to the number of the through grooves, and the plurality of arc-shaped plates are sequentially spliced to form a hollow pipe. The cylinder covers are installed at the two ends of the hollow pipe, and the through grooves are formed in one of the cylinder covers.

[0010] Further, one side of the arc-shaped plate is provided with an embedded part, and the other side of the arc-shaped plate is provided with an embedded slot for avoiding the embedded part, so that the joint of the two adjacent arc-shaped plates is L-shaped.

[0011] Further, the sealing sheet is arranged between the barrel cover and the hollow tube, and the diaphragm flap is arranged in the joint of the two adjacent arc-shaped plates away from the side of the middle shaft.

[0012] Further, the inner wall of the water inlet and outlet joint is provided with water ports in number equal to the number of the through slots, and the outer wall of the water inlet and outlet joint is fixedly connected with water supply pipes in communication with the water ports.

[0013] Further, the outer wall of the barrel cover provided with the through slots is provided with a circular groove, the water inlet and outlet joint is rotatably arranged in the circular groove, and a sealing ring is arranged between the inner wall of the circular groove and the water inlet and outlet joint.

[0014] In summary, the utility model has at least one of the following beneficial technical effects:

[0015] 1. The cooling roller for processing plastic film, the cooling water cavity in the barrel is sealed into multiple cooling sub-cavities through the diaphragm assembly, water injection in a single cooling sub-cavity can press the adjacent cooling sub-cavities, so that the cooling water in the adjacent cooling sub-cavities is squeezed out, new cooling water can be injected subsequently, the cooling roller can still keep stable water injection and drainage action in rotation, and the use of the cooling roller is more stable.

[0016] 2. The cooling roller for processing plastic film, the barrel is mainly composed of arc-shaped plates and a barrel cover, so that the diaphragm assembly can be fixed during barrel assembly, the connection strength and sealing strength of the diaphragm assembly and the barrel can be effectively improved, the embedded part and the embedded slot arranged at the edge side of the arc-shaped plate can further improve the mounting efficiency of the two adjacent arc-shaped plates and the sealing strength and connection stability of the diaphragm assembly and the barrel. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0018] Figure 1 It is a structure schematic view of the cooling roller for processing plastic film of the utility model.

[0019] Figure 2 It is an explosion view of the cooling roller for processing plastic film of the utility model.

[0020] Figure 3 For Figure 2 Enlarged view at A in the middle.

[0021] Figure 4 For the structure diagram of the cylinder of the cooling roller for processing plastic film.

[0022] Figure 5 For the structure diagram of the diaphragm assembly of the cooling roller for processing plastic film.

[0023] Figure 6 For the structure diagram of the cooling sub-cavity of the cooling roller for processing plastic film.

[0024] Figure 7 For the structure diagram of the water inlet and outlet joint of the cooling roller for processing plastic film.

[0025] In the figure, 1, cylinder; 101, arc plate; 102, cylinder cover; 2, diaphragm assembly; 201, intermediate shaft; 202, diaphragm petal; 203, sealing piece; 3, water inlet and outlet joint; 4, cooling water cavity; 5, through groove; 6, opening; 7, cooling sub-cavity; 8, embedded part; 9, embedded groove; 10, water gap; 11, water supply pipe; 12, circular groove; 13, sealing ring. DETAILED DESCRIPTION

[0026] The utility model will be made further detailed description in combination with the drawings.

[0027] Embodiment:

[0028] Refer to Figure 1 - Figure 7 The utility model discloses a kind of cooling roller for processing plastic film, including cylinder 1, cooling water cavity 4 is set in cylinder 1, at least four through grooves 5 of cooling water cavity 4 communication are set in one end of cylinder 1;

[0029] Diaphragm assembly 2 is set in cylinder 1, diaphragm assembly 2 includes intermediate shaft 201, diaphragm petal 202 and sealing piece 203, intermediate shaft 201 is coaxially arranged with cylinder 1, both ends of intermediate shaft 201 are fixedly connected with sealing piece 203, one of sealing piece 203 close to through groove 5 is set with the opening 6 corresponding with the position of through groove 5, diaphragm petal 202 is set between adjacent two openings 6, one side of diaphragm petal 202 is fixedly connected with intermediate shaft 201, the other side of diaphragm petal 202 is connected with the inner wall of cooling water cavity 4, so that cooling water cavity 4 is formed with cooling sub-cavity 7 corresponding with through groove 5 one by one in it;

[0030] Water inlet and outlet joint 3 is set in one end of cylinder 1 set with through groove 5, for controlling the cooling water in and out of cooling sub-cavity 7.

[0031] In this embodiment, it is observed that Figure 1 and Figure 4 It can be found that the cooling water cavity 4 is arranged in the barrel 1, and at least four through grooves 5 communicating with the cooling water cavity 4 are arranged at one end of the barrel 1, so that the cooling water can enter the cooling water cavity through the through grooves 5, so that the surface of the barrel 1 is in a low-temperature state, and the plastic film is cooled and shaped.

[0032] Since the cooling roller rotates, the through grooves 5 also rotate, which causes the cooling water to be unable to enter and exit stably, and affects the heat dissipation effect of the cooling roller. Therefore, it is observed that Figure 5 and Figure 6 It can be found that the diaphragm assembly 2 is arranged in the barrel 1, the diaphragm assembly 2 comprises an intermediate shaft 201, diaphragm petals 202 and sealing sheets 203, the intermediate shaft 201 is coaxially arranged with the barrel 1, both ends of the intermediate shaft 201 are fixedly connected with the sealing sheets 203, one of the sealing sheets 203 close to the through groove 5 is provided with an opening 6 corresponding to the position of the through groove 5, the diaphragm petals 202 are arranged between adjacent two openings 6, one side of the diaphragm petals 202 is fixedly connected with the intermediate shaft 201, and the other side of the diaphragm petals 202 is connected with the inner wall of the cooling water cavity 4, so that the cooling water cavity 4 is formed with cooling sub-cavities 7 corresponding to the through grooves 5 one by one, and the water inlet and outlet connector 3 is rotatably connected to one end of the barrel 1, wherein the inner wall of the water inlet and outlet connector 3 is provided with water outlets 10 equal in number to the through grooves 5, and the outer wall of the water inlet and outlet connector 3 is fixedly connected with water supply pipes 11 communicating with the water outlets 10, so that the other two water supply pipes 11 are connected with the water outlet pipe of the water pump, and the remaining two water supply pipes 11 are communicated with the water return pipe, so that the four water outlets 10 become water inlets 10 and water outlets 10 respectively.

[0033] At this time, it is assumed that the four cooling sub-cavities 7 are A, B, C and D cavities respectively, since the position of the water inlet and the position of the water outlet of the water inlet and outlet connector 3 remain unchanged when the through grooves 5 rotate, when the through grooves 5 of the A and C cavities coincide with the water inlets 10, the water enters the A and C cavities through the through grooves 5, so that the diaphragm petals 202 in the A and C cavities are extruded and deformed, thereby extruding the B and D cavities, so that the B and D cavities are reduced; subsequently, when the through grooves 5 of the B and D cavities coincide with the water inlets 10, at the same time, the through grooves 5 of the A and C cavities coincide with the water outlets 10, when the cooling water enters the B and D cavities through the through grooves 5, the diaphragm petals 202 are deformed under the influence of water pressure, thereby extruding the A and C cavities, so as to extrude the cooling water in the A and C cavities, realize stable heat exchange of the cooling water, and ensure the circulation of the cooling water while the cooling roller rotates, thereby ensuring the use stability of the cooling roller.

[0034] In a further preferred embodiment of the present application, as Figure 2 and Figure 3As shown, the barrel body 1 is mainly composed of arc-shaped plates 101 and barrel covers 102, the number of the arc-shaped plates 101 is equal to the number of the through grooves 5, the plurality of arc-shaped plates 101 are sequentially spliced to form a hollow pipe, the barrel covers 102 are installed at two ends of the hollow pipe, and the through groove 5 is arranged on one of the barrel covers 102;

[0035] One side of the arc-shaped plate 101 is provided with an embedded part 8, and the other side of the arc-shaped plate 101 is provided with an embedded groove 9 for avoiding the embedded part 8, so that the splicing joint of the two adjacent arc-shaped plates 101 is in an L shape.

[0036] The sealing sheet 203 is arranged between the barrel cover 102 and the hollow pipe, and the diaphragm flap 202 is arranged in the splicing joint of the two adjacent arc-shaped plates 101 away from the intermediate shaft 201.

[0037] In the embodiment, the diaphragm flap 202 is difficult to be sealingly connected to the inner wall of the barrel body 1 due to different materials of the diaphragm flap 202 and the barrel body 1, and therefore, the diaphragm flap 202 is observed Figure 2 It can be found that, by arranging the barrel body 1 as the plurality of arc-shaped plates 101 and the barrel covers 102, the number of the arc-shaped plates 101 is equal to the number of the through grooves 5, the plurality of arc-shaped plates 101 are sequentially spliced to form a hollow pipe, the diaphragm flap 202 can be clamped by the splicing joint of the two adjacent arc-shaped plates 101, the installation stability of the diaphragm flap 202 can be ensured, and the sealing performance can be improved. Figure 3 It can be found that, one side of the arc-shaped plate 101 is provided with the embedded part 8, the other side of the arc-shaped plate 101 is provided with the embedded groove 9 for avoiding the embedded part 8, the splicing joint of the two adjacent arc-shaped plates 101 is in an L shape, the splicing of the two adjacent arc-shaped plates 101 can be more simple and convenient, the clamping area of the diaphragm flap 202 can be effectively increased, and the installation stability of the diaphragm flap 202 can be further improved.

[0038] Then, the barrel covers 102 are installed at two ends of the hollow pipe, the sealing sheet 203 is fixed at the two ends of the hollow pipe by the barrel covers 102, water leakage at the two ends of the barrel body 1 can be avoided, and therefore, the sealing performance of the barrel body 1 can be improved.

[0039] Finally, the through groove 5 is arranged on one of the barrel covers 102, and the cooling water in the cooling cavity 7 can be ensured to enter and exit.

[0040] In the further preferable embodiment of the utility model, as shown in Figure 7 The outer wall of the barrel cover 102 provided with the through groove 5 is provided with a circular groove 12, the water inlet and outlet connector 3 is rotationally arranged in the circular groove 12, and a sealing ring 13 is arranged between the inner wall of the circular groove 12 and the water inlet and outlet connector 3.

[0041] In this embodiment, since the cooling roller needs to rotate to improve the uniformity of the stretching of the plastic film, the relative rotation between the barrel 1 and the water inlet and outlet joint 3 for water injection and water return is caused, and thus the observation Figure 7 It can be found that by opening the circular groove 12 on the outer wall of the barrel cover 102 provided with the through groove 5, the water inlet and outlet joint 3 is rotatably arranged in the circular groove 12, and the sealing ring 13 is arranged between the inner wall of the circular groove 12 and the water inlet and outlet joint 3, the sealing effect can be effectively improved, and water leakage can be avoided.

[0042] The implementation principle of the above embodiment is that the cooling roller is installed on the production line, the connecting shaft installed with the water inlet and outlet joint 3 is fixed, and the end of the barrel 1 away from the water inlet and outlet joint 3 is connected with the output shaft of the motor. When the cooling roller is used, water is injected into the cooling water cavity 4 of the barrel 1 through the water inlet and outlet joint 3, and at the same time, the motor drives the barrel 1 to rotate, so that different through grooves 5 are in turn in contact with the water inlet port 10 and the water outlet port 10, and the cooling water in the cooling sub-cavity 7 is intermittently injected and discharged, so that the stability of the injection of the cooling water can be effectively ensured, and the stability of the use of the cooling roller is improved.

[0043] The embodiments of the specific embodiment are the preferred embodiments of the utility model, and do not limit the protection scope of the utility model, so that: any equivalent changes made according to the structure, shape and principle of the utility model should be covered in the protection scope of the utility model.

Claims

1. A cooling roll for processing plastic film, characterized in that The utility model provides a cooling water distribution device, including the cylinder (1), is seted up in the cylinder (1) and is opened cooling water chamber (4), and the one end of cylinder (1) is opened at least four with cooling water chamber (4) intercommunication's through groove (5); The diaphragm assembly (2) is arranged in the cylinder (1), and the diaphragm assembly (2) includes an intermediate shaft (201), a diaphragm petal (202) and a sealing sheet (203), the intermediate shaft (201) is coaxially arranged with the cylinder (1), both ends of the intermediate shaft (201) are fixedly connected with the sealing sheet (203), one of the sealing sheets (203) close to the through groove (5) is provided with an opening (6) corresponding to the position of the through groove (5), the diaphragm petal (202) is arranged between two adjacent openings (6), one side of the diaphragm petal (202) is fixedly connected with the intermediate shaft (201), and the other side of the diaphragm petal (202) is connected with the inner wall of the cooling water chamber (4), so that the cooling water chamber (4) forms a cooling sub-chamber (7) corresponding to the through groove (5) one by one; The water inlet and outlet joint (3) is arranged at one end of the cylinder (1) provided with the through groove (5) and is used for controlling the cooling water in the cooling sub-chamber (7) to enter and exit.

2. A cooling roll for processing plastic film according to claim 1, characterized in that The cylinder (1) is mainly composed of an arc-shaped plate (101) and a cylinder cover (102), the number of the arc-shaped plates (101) is equal to the number of the through grooves (5), and the plurality of arc-shaped plates (101) are sequentially spliced to form a hollow pipe, the cylinder cover (102) is installed at both ends of the hollow pipe, and the through groove (5) is arranged on one of the cylinder covers (102).

3. A cooling roll for processing plastic film according to claim 2, characterized in that One side of the arc-shaped plate (101) is protruded to form an embedding part (8), and the other side of the arc-shaped plate (101) is provided with an embedding groove (9) for avoiding the embedding part (8), so that the splicing joint of two adjacent arc-shaped plates (101) is in an L shape.

4. A cooling roll for processing plastic film according to claim 3, characterized in that The sealing sheet (203) is arranged between the cylinder cover (102) and the hollow pipe, and one side of the diaphragm petal (202) away from the intermediate shaft (201) is arranged in the splicing joint of two adjacent arc-shaped plates (101).

5. A cooling roll for processing plastic film according to claim 4, characterized in that The inner wall of the water inlet and outlet joint (3) is provided with a water port (10) corresponding to the number of the through grooves (5), and the outer wall of the water inlet and outlet joint (3) is fixedly connected with a water supply pipe (11) communicated with the water port (10).

6. A cooling roll for processing plastic film according to claim 5, wherein The outer wall of the cylinder cover (102) provided with the through groove (5) is provided with a circular groove (12), the water inlet and outlet joint (3) is rotatably arranged in the circular groove (12), and a sealing ring (13) is arranged between the inner wall of the circular groove (12) and the water inlet and outlet joint (3).

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