CN213766819U

CN213766819U - Water-saving EVA (ethylene-vinyl acetate) adhesive film tape casting forming cooling roller structure

Info

Publication number: CN213766819U
Application number: CN202021688879.0U
Authority: CN
Inventors: 王志伟; 马磊; 林建国; 马建华; 徐俊
Original assignee: Hangzhou Xin Zi Electro Optical Technology Inc Us 62 Martin Road Concord Massachusetts 017
Current assignee: Hangzhou Xin Zi Electro Optical Technology Inc Us 62 Martin Road Concord Massachusetts 017
Priority date: 2020-08-13
Filing date: 2020-08-13
Publication date: 2021-07-23
Anticipated expiration: 2030-08-13

Abstract

The utility model relates to a water-saving EVA glued membrane curtain coating shaping chill roll structure, including chill roll, support frame and motor, the chill roll includes barrel, end cover, and barrel axial both ends are sealed through the end cover respectively, and the axial center of closing cap is connected with the connecting axle respectively, and the connecting axle axial is equipped with the water hole, and the axial outside one end intercommunication of connecting axle is connected with first rotatory water joint, its axial inboard one end that is located the barrel intercommunication respectively is connected with the rotatory water joint of second, and the intercommunication is connected with the water service pipe between the rotatory water joint of both sides second in the barrel, and this water service pipe is close to barrel right side one end and is equipped with the water suction pipe, and the water service pipe right-hand member is close to water suction pipe one side and seals. Through the water inlet piece cooling water that arranges in proper order and pour into the barrel into to guarantee that whole barrel temperature is even, it is big to improve the barrel both ends difference in temperature of chill roll, avoids the chill roll to produce the defect when the cooling rubber membrane, stops the waste film and produces, has improved the shaping effect and the shrinkage factor of glued membrane, increases the product percent of pass.

Description

Water-saving EVA (ethylene-vinyl acetate) adhesive film tape casting forming cooling roller structure

Technical Field

The utility model belongs to the technical field of the EVA glued membrane processing equipment, in particular to water-saving EVA glued membrane curtain coating shaping chill roll structure.

Background

The preparation of the adhesive film is that EVA particles are extruded by a screw extruder, extruded by a filter screen from a forming die head to form a film shape, vertically cast between a forming embossing roller and a forming rubber roller and rolled into the adhesive film with patterns and uniform thickness. Due to the harsh requirements of the photovoltaic industry, the requirements on production equipment of the EVA adhesive film are very high, and the production equipment comprises the technical difficulties of equipment stability, extrusion temperature control, cross-linking curing prevention, product shrinkage rate control and the like.

In the cooling roller in the prior art, the cooling mode is that the cooling roller flows in from one end of the cooling roller and flows out from the other end of the cooling roller, and the whole roller body has an obvious temperature gradient on the width layer, namely, the temperature of one end of the cooling roller is high, and the temperature of the other end of the cooling roller is low, so that the temperature difference between the two ends of the roller body is large, the shrinkage rate of an adhesive film is large and uneven, and the product quality is seriously influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a water-saving EVA glued membrane curtain coating shaping chill roll structure is provided.

The utility model is realized in such a way, the utility model provides a water-saving EVA glued membrane curtain coating shaping chill roll structure, including the chill roll, the chill roll includes barrel, end cover, barrel axial both ends are sealed through the end cover respectively, the axial center of end cover is connected with the connecting axle respectively, the connecting axle axial is equipped with the water hole that communicates with the barrel inner chamber, the axial outside one end of connecting axle is connected with first rotatory water connector, its axial inboard one end that is located the barrel is connected with second rotatory water connector respectively, the downside is equipped with the sprinkler pipe between the second rotatory water connector in the barrel, the downside of sprinkler pipe in the barrel is equipped with the wet return, the left side second rotatory water connector in the barrel communicates with the left end of sprinkler pipe through the return bend, the right-hand member of this sprinkler pipe seals; the second rotary water joint on the right side in the cylinder is communicated and connected with the right end of a water return pipe through a bent pipe, and the left end of the water return pipe is sealed; a plurality of water spray nozzles which are axially distributed and communicated with the sprinkler pipe are arranged on the radial upper side of the sprinkler pipe; a plurality of water return ports which are distributed axially are arranged on the two radial sides of the water return pipe.

Furthermore, a plurality of axially-distributed brushes are arranged on the radial lower side of the water return pipe.

Furthermore, a chain wheel or a belt wheel is fixedly connected to the end cover of one side of the cylinder body in a sleeved mode.

Furthermore, the caliber of a water return opening distributed from the left side to the right side on the water return pipe is gradually reduced.

Furthermore, the sprinkler pipe and the water return pipe are arranged in parallel and are connected with each other in the radial direction.

Furthermore, baffles are axially arranged on two sides between the sprinkling pipe and the water return pipe.

Compared with the prior art, the water-saving EVA adhesive film curtain coating forming cooling roller structure of the utility model drives the cooling roller to rotate through the chain wheel or the belt wheel by the motor, and the adhesive film is cooled and drawn by the embossing roller and then is cooled and formed by a plurality of cooling rollers; each cooling roller is provided with a sprinkling pipe and a water return pipe in the cylinder body, the sprinkling pipe is provided with a plurality of water spray nozzles, cooling water is injected into the cylinder body from the water spray nozzles through a water supply pipe through a first rotary water connector on the left side, a water hole in a connecting shaft on the left side, a second rotary water connector on the left side and a bent pipe to the sprinkling pipe, and accumulated water at the bottom of the cylinder body is pumped out through a water return port, the water return pipe, the bent pipe, a second rotary water connector on the right side, a water hole in a connecting shaft on the right side and the first rotary water connector on the right side, so that the temperature uniformity of the whole cylinder body is ensured, the temperature difference between two ends of the cylinder body of the cooling roller is improved, the defect of the cooling roller during cooling of an adhesive film is avoided, a waste film is prevented, the molding effect and the shrinkage rate of the adhesive film are improved, and the product qualification rate is increased; in actual use, the consumption of cooling water is greatly reduced, namely, the whole inner cavity of the cylinder does not need to be filled with the cooling water, and the cooling water still has good cooling performance; the lower side of the water return pipe is provided with the brush, and the purpose is to wash the inner wall of the cylinder body while returning water, so that heat dissipation and cooling are prevented from being influenced by scaling.

Drawings

FIG. 1 is a schematic structural view of the water-saving EVA film casting cooling roller structure of the present invention;

FIG. 2 is a schematic main sectional view of the structure of the water-saving EVA film casting cooling roller of the present invention;

fig. 3 is a sectional view taken along line a-a of fig. 1.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1-3, the present invention relates to a water-saving EVA film tape casting cooling roller structure, including a cooling roller 1, the cooling roller 1 includes a barrel 11 and an end cap 12, the axial two ends of the barrel 11 are respectively sealed by the end cap 12, the axial center of the end cap 12 is respectively connected with a connecting shaft 13, the connecting shaft 13 is axially provided with a water hole communicated with the inner cavity of the barrel 11, one end of the axial outer side of the connecting shaft 13 is connected with a first rotary water joint 14, one end of the axial inner side of the connecting shaft located in the barrel 11 is respectively connected with a second rotary water joint 15, a sprinkler pipe 16 is arranged at the lower side between the second rotary water joints 15 in the barrel 11, the lower side of the sprinkler pipe 16 in the barrel is provided with a return pipe 17, the second rotary water joint 15 at the left side in the barrel 11 is connected with the left end of the sprinkler pipe 16 through a first bent pipe 18, and the right end of the sprinkler pipe 16 is sealed; the second rotary water joint 15 on the right side in the cylinder 11 is communicated and connected with the right end of the water return pipe 17 through a second bent pipe 19, and the left end of the water return pipe 17 is sealed; a plurality of water nozzles 161 which are axially distributed and communicated with the sprinkler pipe 16 are arranged on the radial upper side of the sprinkler pipe 16; a plurality of water return ports 171 are axially arranged on both radial sides of the water return pipe 17. The radial lower side of the water return pipe 17 is provided with a plurality of axially distributed brushes 20. A chain wheel or a belt wheel 21 is fixedly connected on the connecting shaft 13 on the end cover 12 at one side of the cylinder body 11 in a sleeved mode. The diameter of the water return port 171 distributed from the left side to the right side on the water return pipe 17 is gradually reduced. The sprinkler pipe 16 is arranged in parallel with the return pipe 17, and is connected with the return pipe in the radial direction. Baffles 22 are axially arranged on both sides between the sprinkling pipe 16 and the water return pipe 17.

The two ends of the cooling roller 1 are erected on a support frame 3 of an EVA (ethylene vinyl acetate) processing line through a connecting shaft 13 and a bearing seat 30, a chain wheel or a belt wheel 20 is driven by a motor 2 through a chain or a belt 40, the cooling roller 1 is enabled to rotate, the motor 2 is arranged below the support frame 3, a cooling water tank 4 and an air-cooled water cooler 5 are arranged on one side of the motor 2, a water suction pump 6 is arranged in the cooling water tank 4, the water outlet end of the water suction pump 6 is communicated and connected with a first rotary water joint 14 on the left side of a barrel 11 through a water injection pipeline 7, and the first rotary water joint 14 on the right side of the barrel 11 is communicated and connected with a water outlet pipe 9 of a water suction pump 8 through a communication way to flow back to the cooling water tank 6 through the air-cooled water cooler 5.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A water-saving EVA adhesive film tape casting cooling roller structure comprises a cooling roller (1), wherein the cooling roller (1) comprises a barrel body (11) and end covers (12), the two axial ends of the barrel body (11) are respectively sealed and connected through the end covers (12), the axial centers of the end covers (12) are respectively connected with a connecting shaft (13), the connecting shaft (13) is axially provided with water holes communicated with the inner cavity of the barrel body (11), the water-saving EVA adhesive film tape casting cooling roller structure is characterized in that one end of the axial outer side of the connecting shaft (13) is communicated and connected with a first rotating water joint (14), one end of the axial inner side of the connecting shaft, which is positioned in the barrel body (11), is respectively communicated and connected with a second rotating water joint (15), a sprinkling pipe (16) is arranged on the lower side between the second rotating water joints (15) in the barrel body (11), a water return pipe (17) is arranged on the lower side of the sprinkling pipe (16), the second rotating water joint (15) on the left side in the barrel body (11) is communicated and connected with the left end of the sprinkling pipe (16) through a first elbow pipe (18), the right end of the sprinkling pipe (16) is sealed; a second rotary water joint (15) at the right side in the cylinder body (11) is communicated and connected with the right end of a water return pipe (17) through a second bent pipe (19), and the left end of the water return pipe (17) is sealed; a plurality of water spray nozzles (161) which are axially distributed and communicated with the sprinkler pipe (16) are arranged on the radial upper side of the sprinkler pipe (16); a plurality of water return ports (171) which are distributed axially are arranged on the two radial sides of the water return pipe (17).

2. A water-saving EVA film tape casting cooling roll structure as claimed in claim 1, wherein the radial underside of the return pipe (17) is provided with a plurality of axially distributed brushes (20).

3. A water-saving EVA film casting cooling roller structure as claimed in claim 1, wherein a sprocket or pulley (21) is fixedly connected to a connecting shaft (13) on an end cap (12) at one side of the barrel (11).

4. A water-saving EVA film casting cooling roll structure as claimed in claim 1, wherein the diameter of the return port (171) distributed from left to right on the return pipe (17) is gradually reduced.

5. A water-saving EVA film tape casting cooling roll structure as claimed in claim 1, wherein the water spray pipe (16) and the water return pipe (17) are arranged in parallel and connected to each other in the radial direction.

6. A water-saving EVA film casting cooling roller structure according to claim 1 or 5, wherein baffles (22) are axially disposed on both sides between the sprinkler pipe (16) and the return pipe (17).