A cooling structure for biaxially oriented polypropylene film equipment

Abstract

The utility model relates to the technical field of biaxially oriented polypropylene film, and specifically discloses a cooling structure of biaxially oriented polypropylene film equipment, comprising two rail plates respectively arranged front and rear and a cooler between the two rail plates, and a bracket connected to the cooler is fixedly arranged on one side of the two rail plates close to each other; the cooler comprises a cold air pipe fixedly arranged between the two brackets and a plurality of adjusting balls arranged on the upper end surface of the cold air pipe. The utility model realizes cooling of the entire bottom of the film through the cold air pipe and the adjusting balls, and can adjust the angle of the air outlet, cool the film at different angles, and prevent the film from sticking to the conveyor belt. The cold air fan injects cold air into the cold air pipe through the air inlet pipe, enters the air inlet hole, and is sprayed out from the air outlet to cool the film, and when the cooling angle needs to be adjusted, the adjusting ball can be grasped and rotated to adjust the direction of the adjusting ball, so that the cold air at the air outlet can be sprayed out from different angles for cooling.

Description

Technical Field

[0001] The utility model relates to the technical field of biaxially stretched polypropylene film, in particular to a cooling structure of biaxially stretched polypropylene film equipment. Background Art

[0002] Biaxially oriented polypropylene film, also known as BOPP film, has the advantages of light weight, non-toxicity, odorlessness, moisture resistance, high mechanical strength, good dimensional stability, good printing performance, and good transparency. It is currently the most widely used printing film.

[0003] Biaxially oriented polypropylene film needs to go through preheating, stretching, heat setting, relaxation, cooling and other processes during the production process. Most of the cooling methods adopted by existing equipment use cooling rollers, that is, cooling liquid circulates inside the roller body to cool the entire roller body. The cooling liquid enters from one side of the roller body and exits from the other side to absorb the heat of the film in contact with the roller body. This cooling method has a poor cooling effect. The heat absorption capacity of the cooling liquid on the inlet side of the roller body is greater than that on the outlet side, which easily causes a temperature difference on both sides of the film, affecting the performance of the film. In addition, the heat absorption area of ​​this cooling method is limited to the place where the film contacts the roller body. The short contact time between the two will affect the cooling effect, and there is a hidden danger of "sticking to the roller". Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides a cooling structure for a biaxially stretched polypropylene film device, which solves the technical problems of poor film cooling effect and roller sticking.

[0005] The cooling structure of the biaxially oriented polypropylene film equipment of the utility model comprises two rail plates respectively arranged front and back and a cooler between the two rail plates, the two rail plates are arranged at intervals to form a channel, and a bracket connected to the cooler is fixedly arranged on one side of the two rail plates close to each other;

[0006] The cooler includes a cold air duct fixed between two brackets and a plurality of adjusting balls arranged on the upper end surface of the cold air duct. The upper end surface of the cold air duct is provided with a plurality of adjusting ports at intervals. The adjusting balls are arranged in the adjusting ports, and bearing balls are arranged between the adjusting balls and the adjusting ports. The upper hemisphere of the adjusting balls is located outside the cold air duct, and the lower hemisphere is located inside the cold air duct. A plurality of air inlet holes are provided on the outer surface of the lower hemisphere of the adjusting balls, and an air outlet is provided on the upper hemisphere. The plurality of air inlet holes are connected to the air outlet.

[0007] As a further improvement of the utility model, supporting legs are fixedly provided on both sides between the lower end surfaces of the two rail plates, and the supporting legs are in a gantry structure as a whole.

[0008] As a further improvement of the utility model, a cold air blower is installed on one side of one of the legs, and an air inlet pipe connected to the cold air pipe is installed at the output end of the cold air blower.

[0009] As a further improvement of the utility model, a plurality of rollers are provided inside the channels of the two rail plates and are connected to both sides of the rail plates through bearings. A motor is installed on one side of one of the rail plates, and the output end of the motor is connected to one of the rollers.

[0010] As a further improvement of the utility model, gears are fixedly provided at the front and rear positions of the outer surface of the roller shaft, and a toothed belt is provided at the front and rear positions of the gears on the outside of the roller shaft. The toothed belt and the gears are meshed with each other, and a conveyor belt is fixedly provided between the two toothed belts.

[0011] As a further improvement of the present invention, the conveyor belt is composed of a plurality of round tubes, the plurality of round tubes are arranged along the length direction of the toothed belt, and the plurality of round tubes are arranged at intervals.

[0012] As a further improvement of the utility model, a connecting frame is fixedly provided on one side of the two rail plates, a cleaning plate is fixedly provided between the two connecting frames, and the upper end surface of the cleaning plate is in contact with the conveyor belt.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The utility model realizes cooling of the entire bottom of the film through the cold air duct and the adjusting ball, and can adjust the angle of the air outlet to cool the film at different angles and prevent the film from sticking to the conveyor belt. The cold air blower injects cold air into the cold air duct through the air inlet duct, enters the air inlet hole, and is ejected from the air outlet to cool the film. When the cooling angle needs to be adjusted, the adjusting ball can be grasped and rotated to adjust the direction of the adjusting ball so that the cold air from the air outlet can be ejected from different angles for cooling.

[0015] 2. The utility model installs a connecting frame and a cleaning plate between the connecting frames on both sides of the rail plate, so that when the film sticks to the outer surface of the roller, the connecting frame will fit the cleaning plate onto the roller to clean the film stuck on the roller, so that when the roller moves upward, it is convenient for subsequent film transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 This is a schematic diagram of the overall front cross-sectional structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0019] Figure 3 For this utility model Figure 1Enlarged structural diagram at A in the middle.

[0020] In the figure: 1. Track plate;

[0021] 2. Bracket;

[0022] 3. Roller; 301. Gear;

[0023] 4. Conveyor belt; 401, toothed belt;

[0024] 5. Motor;

[0025] 6. Connecting frame;

[0026] 7. Clean the board;

[0027] 8. Cold air duct;

[0028] 9. Adjust the ball;

[0029] 10. Air outlet; 1001. Air inlet;

[0030] 11. Outriggers;

[0031] 12. Air cooler; 1201. Air inlet duct. DETAILED DESCRIPTION

[0032] The following will disclose multiple embodiments of the utility model with diagrams. For the purpose of clear description, many physical details will be described together in the following description. However, it should be understood that these physical details should not be used to limit the utility model. In other words, in some embodiments of the utility model, these physical details are not necessary. In addition, for the purpose of simplifying the diagram, some conventional structures and components will be depicted in a simple schematic manner in the diagram.

[0033] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0034] See also Figure 1-3The cooling structure of the biaxially oriented polypropylene film equipment of the utility model comprises two rail plates 1 respectively arranged front and back and a cooler between the two rail plates 1, the two rail plates 1 are arranged at intervals to form a channel, and a bracket 2 connected to the cooler is fixedly arranged on one side of the two rail plates 1 close to each other; the cooler comprises a cold air duct 8 fixedly arranged between the two brackets 2 and a plurality of adjusting balls 9 arranged on the upper end surface of the cold air duct 8, a plurality of adjusting ports are arranged at intervals on the upper end surface of the cold air duct 8, the adjusting ball 9 is arranged in the adjusting port, and a bearing ball is arranged between the adjusting ball 9 and the adjusting port, the upper hemisphere of the adjusting ball 9 is located outside the cold air duct 8, and the lower hemisphere is located inside the cold air duct 8, a plurality of air inlet holes 1001 are opened on the outer surface of the lower hemisphere of the adjusting ball 9, and an air outlet 10 is opened on the upper hemisphere, and the plurality of air inlet holes 1001 are connected to the air outlet 10.

[0035] In this embodiment, two rail plates 1 are respectively arranged front and back correspondingly, and a channel is formed between them to facilitate the transportation of the film, and the cooler is arranged inside the channel, and an observation port is opened on one side of the two rail plates 1. The bracket 2 can be fixed inside the observation port or on the opposite side of the rail plate 1, so that the cooler can be installed on the bracket 2, which is convenient for the cooler to cool the film;

[0036] The cooler is composed of a wider and longer cold air duct 8 and an adjusting ball 9 on the cold air duct 8 as main structures. The interior of the cold air duct 8 is a cavity and is in a plate-shaped structure as a whole. It is laid inside the channel of the track plate 1. Multiple adjusting balls 9 are arranged at intervals on the upper end surface of the cold air duct 8. For film cooling, the adjusting ball 9 is divided into an upper hemisphere and a lower hemisphere as a whole. The lower hemisphere is located inside the cold air duct 8, and a plurality of air inlet holes 1001 are provided on the outer surface of the lower hemisphere to ensure that cold air can enter the air inlet holes 1001. The upper hemisphere of the adjusting ball 9 is located on the outer surface of the cold air duct 8 and is provided with an air outlet 10. The bottom of the air outlet 10 is connected to the top of the plurality of air inlet holes 1001, and the top of the air outlet 10 corresponds to the position of the film, so that the cold air can cool the film.

[0037] On the basis of the above embodiments, in this embodiment, legs 11 are fixedly provided on both sides between the lower end surfaces of the two rail plates 1, and the legs 11 are in a gantry structure as a whole. An air cooler 12 is installed on one side of one of the legs 11, and an air inlet pipe 1201 connected to the cold air pipe 8 is installed at the output end of the air cooler 12.

[0038] In this embodiment, each support leg 11 is arranged longitudinally and between the two rail plates 1 to support the two rail plates 1. The support legs 11 include two, which are distributed on the left and the right. The overall structure is a gantry. The horizontal arm is connected to the rail plate 1, and the vertical arm supports the ground. An air cooler 12 is installed on one side of one of the support legs 11. The air inlet pipe 1201 connected to the output end of the air cooler 12 is connected to one end of the cold air pipe 8, so as to inject cold air into the cold air pipe 8.

[0039] Based on the above embodiments, in this embodiment, multiple rollers 3 are provided inside the channels of the two rail plates 1 and are connected to both sides of the rail plates 1 through bearings. A motor 5 is installed on one side of one of the rail plates 1, and the output end of the motor 5 is connected to one of the rollers 3.

[0040] In this embodiment, a plurality of rollers 3 are arranged in the channel of the track plate 1, and the rollers 3 are located on both sides of the cooler, both ends of the rollers 3 are rotatably connected to the inside of the track plate 1, and a motor 5 is installed at the corresponding position of one end of one of the rollers 3, and the output end of the motor 5 is connected to the roller 3 to form a basic transmission device.

[0041] On the basis of the above embodiment, in this embodiment, a gear 301 is fixedly provided at the front and rear positions of the outer surface of the roller shaft 3, a toothed belt 401 is provided at the front and rear positions of the gear 301 on the outside of the roller shaft 3, the toothed belt 401 and the gear 301 are meshed with each other, and a conveyor belt 4 is fixedly provided between the two toothed belts 401.

[0042] In this embodiment, a gear 301 is fixedly installed on the front and rear ends of the outer surface of the roller 3 at the position of the rail plate 1, and the outer surface of the gear 301 is meshed with a toothed belt 401, which is in an annular chain structure and is sleeved on the outer surfaces of multiple rollers 3. The conveyor belt 4 is fixed between the toothed belts 401 to form a conveyor belt 4, which is convenient for transporting the film.

[0043] On the basis of the above-mentioned embodiment, in this embodiment, the conveyor belt 4 is composed of a plurality of round tubes, the plurality of round tubes are arranged along the length direction of the toothed belt 401, and the plurality of round tubes are arranged at intervals.

[0044] In this embodiment, a plurality of circular tubes are arranged along the length direction of the toothed belt 401 and fixed between two toothed belts 401, so that the plurality of circular tubes form a conveyor belt 4, and there are intervals between the plurality of circular tubes, which facilitates cooling of the film by cold air.

[0045] On the basis of the above embodiment, in this embodiment, a connecting frame 6 is fixedly provided on one side of the two rail plates 1 , a cleaning plate 7 is fixedly provided between the two connecting frames 6 , and the upper end surface of the cleaning plate 7 is in contact with the conveyor belt 4 .

[0046] In this embodiment, a gantry structure is formed between two connecting frames 6 and a cleaning plate 7. The connecting frame 6 is connected to one side of the track plate 1 in a vertical arm damping rotation manner. The cleaning plate 7 is installed between the two connecting frames 6, and the upper end surface is in contact with the roller shaft 3 to clean the residual film.

[0047] When using the utility model: when the film moves on the conveyor belt 4, start the cold air fan 12 to inject cold air into the cold air pipe 8, and adjust the angle of the adjusting ball 9 as needed, so that the angle of the air outlet 10 of the adjusting ball 9 moves to a suitable position, and the cold air enters from the air inlet 1001 and is ejected from the air outlet 10 to cool the film.

[0048] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A cooling structure for a biaxially oriented polypropylene film device, characterized in that: It comprises two rail plates (1) arranged front and rear respectively and a cooler between the two rail plates (1), the two rail plates (1) are arranged at intervals to form a channel, and a bracket (2) connected to the cooler is fixedly provided on one side of the two rail plates (1) close to each other; The cooler comprises a cold air pipe (8) fixed between two brackets (2) and a plurality of adjustment balls (9) arranged on the upper end surface of the cold air pipe (8); a plurality of adjustment ports are arranged at intervals on the upper end surface of the cold air pipe (8); the adjustment ball (9) is arranged in the adjustment port, and a bearing ball is arranged between the adjustment ball (9) and the adjustment port; the upper hemisphere of the adjustment ball (9) is located outside the cold air pipe (8), and the lower hemisphere is located inside the cold air pipe (8); a plurality of air inlet holes (1001) are opened on the outer surface of the lower hemisphere of the adjustment ball (9), and an air outlet (10) is opened on the upper hemisphere; and the plurality of air inlet holes (1001) are connected to the air outlet (10).

2. The cooling structure of a biaxially oriented polypropylene film device according to claim 1, characterized in that: Support legs (11) are fixedly arranged on both sides between the lower end surfaces of the two rail plates (1), and the support legs (11) are in the form of a gantry structure as a whole.

3. The cooling structure of the biaxially oriented polypropylene film device according to claim 2, characterized in that: A cooling fan (12) is installed on one side of one of the supporting legs (11), and an air inlet pipe (1201) connected to the cooling air pipe (8) is installed at the output end of the cooling fan (12).

4. The cooling structure of the biaxially oriented polypropylene film equipment according to claim 1, characterized in that: A plurality of rollers (3) are arranged inside the channels of the two rail plates (1) and are connected to both sides of the rail plates (1) via bearings. A motor (5) is installed on one side of one of the rail plates (1), and the output end of the motor (5) is connected to one of the rollers (3).

5. The cooling structure of the biaxially oriented polypropylene film equipment according to claim 4, characterized in that: Gears (301) are fixedly arranged at front and rear positions of the outer surface of the roller shaft (3); toothed belts (401) are arranged at front and rear positions of the outer surface of the roller shaft (3) at positions of the gears (301); the toothed belts (401) and the gears (301) are meshed with each other; and a conveyor belt (4) is fixedly arranged between the two toothed belts (401).

6. The cooling structure of the biaxially oriented polypropylene film device according to claim 5, characterized in that: The conveyor belt (4) is composed of a plurality of circular tubes, the plurality of circular tubes are arranged along the length direction of the toothed belt (401), and the plurality of circular tubes are arranged at intervals.

7. The cooling structure of the biaxially oriented polypropylene film equipment according to claim 6, characterized in that: A connecting frame (6) is fixedly provided on one side of the two rail plates (1), a cleaning plate (7) is fixedly provided between the two connecting frames (6), and the upper end surface of the cleaning plate (7) is in contact with the conveyor belt (4).

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