CN206306292U - EVA trimming prilling granulators - Google Patents

Abstract

The utility model provides an EVA edge trimming and granulation device, which comprises EVA edge material, a conveying device for conveying the EVA edge material, a control device for controlling the size of the EVA edge material, and a control device for controlling the size of the EVA edge material. A cutting device for trimming and granulating the material. The control device includes a feed controller that controls the width of the EVA trim and an extrusion that controls the thickness of the EVA trim. The utility model can firstly change the soft EVA side material into a higher hardness EVA side material by means of extrusion, and then use a cutting device to cut the EVA side material into granules, which overcomes the disadvantage that the EVA side material cannot be directly granulated, And without heating and water cooling, the cross-linking risk of thermosetting EVA is reduced, and at the same time, the additives in EVA are prevented from contacting with water, so that the chemical properties of the granulated EVA trim are guaranteed.

Description

EVA trimming granulation device

technical field

The utility model relates to an EVA trimming and granulation device, which belongs to the field of solar energy packaging.

Background technique

In the production process of solar energy encapsulation EVA film, because the width required by customers is different, it needs to be trimmed during the processing process, and the excess edge material cannot be processed by the extruder because it is long strips, so Long strips of EVA can only be scrapped. Therefore, at the EVA production site, the EVA trim is usually wound into a roll, or the trimmed EVA trim is directly collected in a packaging bag. This traditional EVA trim processing method will make the production site very confusing. And it is not used normally, it needs to be granulated before it can be used normally.

The traditional granulation is extrusion granulation, EVA is melted and extruded, and then water-cooled and cut to granulate. The defect of this granulation method is that the EVA needs to be heated again, and the solar encapsulation film is a thermosetting material, which is related to curing when heated. and need to be water-cooled after heating, while the side material of solar energy-encapsulated EVA has additives, and some additives will fail to be hydrolyzed, and there is a risk in performance.

In view of this, it is indeed necessary to develop a granulation device that does not require heating and extrusion, so as to solve the problem of granulation of the side material of the solar energy encapsulation film without affecting the performance.

Utility model content

The purpose of this utility model is to provide a new type of EVA edge trimming and granulation device, which can not only solve the problem of edge material granulation of solar energy packaging film, but also does not affect the performance.

In order to realize the purpose of the above-mentioned utility model, the utility model provides a kind of EVA trimming and granulating device, which comprises EVA trim, a conveying device for conveying the EVA trim, a control device for controlling the size of the EVA trim and A cutting device for trimming and granulating the size-controlled EVA trim, the control device includes a feed controller for controlling the width of the EVA trim and an extrusion piece for controlling the thickness of the EVA trim.

As a further improvement of the utility model, the conveying device is a conveying roller.

As a further improvement of the utility model, the feed controller controls the width of the EVA side material between 3-10mm.

As a further improvement of the utility model, the feed controller is composed of two metal plates, and the distance between the two metal plates is adjustable.

As a further improvement of the present utility model, the extruded part includes a first press roller and a second press roller respectively arranged on both sides of the EVA edge material, and the first press roller and the second press roller press each other to compress the EVA The thickness of the side material is controlled between 1-3mm.

As a further improvement of the present utility model, the cutting device includes a bottom knife arranged below the conveying device and a cutting knife arranged outside the conveying device, the blades of the bottom knife and the cutting blades are in contact with each other , to cut the EVA edge material with common cooperation.

As a further improvement of the present utility model, the extrusion part is located between the feed controller and the conveying device, and the first pressing roller is located between the feeding controller and the conveying device, and the second pressing roller is located between the feeding control between the tool and the bedknife.

As a further improvement of the utility model, the cutter is a rotary cutter, the rotary cutter is cylindrical, and 8 blades are evenly distributed on the outer wall of the rotary cutter, when the rotary cutter rotates, each Each blade cooperates with the bottom knife in turn to cut the EVA trim into particles with a length of 2-10mm.

As a further improvement of the present utility model, the EVA trimming and granulation device further includes a baffle arranged outside the conveying device, and the baffle covers the side of the conveying device facing the rotary cutter.

As a further improvement of the utility model, the outer surfaces of the first pressing roller and the second pressing roller are composed of the bottom surfaces of several quadrangular pyramids, and the bottom surfaces of the quadrangular pyramids are square.

The beneficial effects of the utility model are: the EVA trimming and granulation device of the utility model is provided with a feed controller for controlling the width of the EVA side material, an extrusion part for controlling the thickness of the EVA side material, and an EVA side material. Cutting device for trimming and granulating side material, so that the soft EVA side material can be changed into EVA side material with higher hardness by extrusion, and then the EVA side material can be cut into granules by the cutting device, which overcomes the EVA The disadvantage that the side material cannot be granulated directly, and it has not been heated and cooled by water, which reduces the risk of crosslinking of thermosetting EVA, and also prevents the additives in EVA from contacting with water, so that the chemical properties of the granulated EVA side material be guaranteed.

Description of drawings

Fig. 1 is the structural representation of the utility model EVA trimming granulation device.

Fig. 2 is a sectional view of the first feed controller in Fig. 1 .

Fig. 3 is a cross-sectional view of the second feed controller in Fig. 1 .

FIG. 4 is a schematic structural view of the quadrangular pyramids forming the outer surfaces of the first pressing roller and the second pressing roller in FIG. 1 .

detailed description

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Please refer to FIG. 1 to FIG. 4 , the utility model discloses an EVA trimming and granulation device for trimming and granulating the EVA film for solar energy encapsulation. The EVA edge trimming and granulation device includes EVA edge material 10, a conveying device 20 for conveying the EVA edge material 10, a control device 30 for controlling the size of the EVA edge material 10, and a control device 30 for controlling the size of the EVA edge material 10. A cutting device 40 for edge trimming and granulation.

The EVA edge material 10 for photovoltaic use is relatively thin, ranging in thickness from 0.2 to 0.8 mm, and relatively soft.

The conveying device 20 is a conveying roller for conveying the EVA trim 10 .

Described control device 30 comprises the first feed controller 33 that makes EVA edge material 10 enter fixed position, the second feed controller 31 that controls the width of EVA edge material 10 and controls the thickness of EVA edge material 10 Extrusion 32. The first feed controller 33, the second feed controller 31, and the extruded part 32 are arranged in sequence.

The first feed controller 33 is a metal plate structure, and a through hole 331 is provided in the middle of the first feed controller 33, and the EVA edge material 10 is pulled from the through hole 331 to ensure that the EVA edge material 10 can enter the second feed controller 31 stably. In this embodiment, the through hole 331 is a circular hole, as shown in Figure 2; of course, in other embodiments, the through hole 331 can also be of other shapes, as long as it can make the EVA trim 10 enter and fix. The role of the position is sufficient, and is not limited here.

The second feed controller 31 is composed of two metal plates, and the distance between the two metal plates is adjustable so as to achieve the purpose of adjusting the width of the EVA trim 10 , as shown in FIG. 3 . In this embodiment, the width of the EVA trim 10 is controlled between 3-10 mm.

The extruding part 32 comprises a first pressing roller 321 and a second pressing roller 322 which are respectively arranged on both sides of the EVA trim 10, and the first pressing roller 321 and the second pressing roller 322 extrude each other to compress the EVA trim. The thickness of 10 is controlled between 1-3mm. The sections of the first pressing roller 321 and the second pressing roller 322 are both circular, so that the EVA trim 10 can be rolled and pressed when the EVA trim 10 is transported. It can be understood that the first pressing roller 321 and the second pressing roller 322 are both driving rollers and their rotating speeds are adjustable, and the rotating speeds of the first pressing roller 321 and the second pressing roller 322 are kept at the same speed as the transmission speed of the EVA scrap 10. Consistent, to ensure that the EVA trim 10 enters the cutting device 40 in time; Certainly, the rotating speed of the first press roller 321 and the second press roller 322 can also be slightly higher than the transmission speed of the EVA trim 10, but the maximum does not exceed the speed of the EVA trim. 5% of the material 10 transmission speed.

The outer surfaces of the first pressing roller 321 and the second pressing roller 322 are composed of the bottom surfaces of several pyramids, and the bottom surfaces of the pyramids are square, as shown in FIG. 4 . The bottom side length of the quadrangular pyramid is 2 ± 1mm, and the height is 2 ± 1mm. By combining the bottom surfaces of several quadrangular pyramids to form the outer surfaces of the first pressing roller 321 and the second pressing roller 322, the EVA edge material 10 can be extruded Into a strong strip of EVA.

However, because the thickness of a single EVA trim 10 is only 0.2-0.8mm, and it is relatively soft, if the above-mentioned thickness requirement of 1-3mm is to be met, on the one hand, when the width of the EVA trim 10 satisfies 3-10mm, , multiple strips of EVA edge material 10 can be stacked together, passing through the first feed controller 33, the second feed controller 31 and the extruding part 32, and passing through the interaction between the first pressing roller 321 and the second pressing roller 322. Extrusion can not only control the thickness at 1-3mm, but also increase the hardness of the EVA trim 10 to facilitate subsequent cutting and granulation. Of course, on the other hand, when the width of the EVA edge material 10 exceeds 3-10mm, the EVA edge material 10 can also be folded first, and then stacked with a plurality of EVA edge material 10, and then passed through the first feeding The controller 33 , the second feed controller 31 and the extruded part 32 meet the above thickness and hardness requirements through the mutual extrusion of the first pressing roller 321 and the second pressing roller 322 .

The cutting device 40 includes a bottom knife 41 arranged below the conveying roller 20 and a cutting knife 42 arranged outside the conveying roller 20 , the blade 411 of the bottom knife 41 and the blade 421 of the cutting knife 42 interact with each other. contact, to cooperate with the EVA trim 10 for cutting and granulation.

The upper surface of the bottom knife 41 is a flat surface, so that when the EVA scrap 10 passes through the conveying roller 20 , the bottom knife 41 can also play the role of supporting the EVA scrap 10 at the same time.

Described cutter 42 is rotary cutter, and this rotary cutter 42 is cylindrically arranged, and the outer wall surface of this rotary cutter 42 is evenly distributed with 8 blades 422, and each blade 422 is all trapezoidal settings, and each The width of each blade 422 near the center of the circle is smaller than the width of the blade 421 side. When the rotary cutter 42 rotates, the cutting edge 421 of each blade 422 cooperates with the cutting edge 411 of the bottom knife 41 in order to cut the EVA trim 10 into particles with a length of 2-10 mm. It can be understood that the rotation of the rotary cutter 42 is controlled by a motor, and the rotary cutter 42 is also an active speed regulating roller, and the rotating speed of the rotary cutter 42 can be adjusted according to the transmission speed of the EVA scrap 10, so that EVA trim 10 is cut into 2-10mm particles.

In this embodiment, the extrusion part 32 is located between the second feed controller 31 and the conveying roller 20, and the first pressure roller 321 is located between the second feed controller 31 and the conveying roller 20, the first The second pressure roller 322 is located between the second feed controller 31 and the bottom knife 41 .

The EVA trimming and granulation device also includes a traction roller (not shown) arranged at the front end of the first feed controller 33, so that the EVA edge material 10 can be drawn to the first feed controller 33 and the second feed controller 33 by the traction roller. The feed controller 31, through the mutual cooperation between the traction roller and the conveying roller 20, and the frictional force and the driving force produced to the EVA edge material 10 when the first pressure roller 321 and the second pressure roller 322 rotate and squeeze each other, can It is ensured that the EVA trim 10 can stably move towards the direction of the cutting device 40 . Specifically, the rotation directions of the traction roller, the first pressing roller 321 and the conveying roller 20 are consistent, and the rotation direction of the second pressing roller 322 is opposite to that of the first pressing roller 321 .

The EVA trimming and granulation device further includes a baffle 50 arranged outside the conveying roller 20 , and the baffle 50 covers the side of the conveying roller 20 facing the rotary cutter 42 . The setting of the baffle 50 can prevent the EVA trim 10 from rotating with the conveyor roller 20 after passing through the conveyor roller 20 , and further ensure that the EVA trim 10 enters the cutting device 40 stably.

In summary, the EVA trimming and granulation device of the present utility model adopts the mode of extrusion, and first turns the soft EVA edge material 10 into the higher EVA edge material 10 of hardness, and then utilizes the rotary cutter 42 to make the EVA edge material 10 is cut into granules, so it overcomes the shortcoming that EVA side material 10 cannot be directly granulated, and it has not been heated and water-cooled, which reduces the risk of crosslinking of thermosetting EVA, and also prevents the additives in EVA from contacting with water. The chemical properties of the granulated EVA trim 10 are guaranteed.

The above embodiments are only used to illustrate the technical solution of the utility model without limitation. Although the utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solution of the utility model can be modified or Equivalent replacement without departing from the spirit and scope of the technical solution of the present utility model.

Claims (10)

1. a kind of EVA trimmings prilling granulator, including EVA rim charges, it is characterised in that：Also include being used to convey the EVA rim charges Conveying device, the control device that size Control is carried out to EVA rim charges and trimming is carried out to the EVA rim charges by size Control make The cutter sweep of grain, the control device includes the feed controller being controlled to the width of EVA rim charges and to EVA rim charges The extrusion that thickness is controlled.

2. EVA trimmings prilling granulator according to claim 1, it is characterised in that：The conveying device is conveying roller.

3. EVA trimmings prilling granulator according to claim 1, it is characterised in that：The feed controller is by EVA rim charges Width control system is between 3-10mm.

4. EVA trimmings prilling granulator according to claim 3, it is characterised in that：The feed controller is by two blocks of metals Plate is constituted, and the distance between two pieces of metallic plates are adjustable.

5. EVA trimmings prilling granulator according to claim 1, it is characterised in that：The extrusion includes being divided into EVA sides Expect first pressure roller and the second pressure roller of both sides, first pressure roller is mutually extruded with the second pressure roller, by the thickness control of EVA rim charges System is between 1-3 mm.

6. EVA trimmings prilling granulator according to claim 5, it is characterised in that：The cutter sweep includes being arranged on institute State the bed plate below conveying device and the cutting knife being arranged on the outside of the conveying device, the blade of the bed plate and the cutting knife Blade contacts with each other, and is cut EVA rim charges with common cooperation.

7. EVA trimmings prilling granulator according to claim 6, it is characterised in that：The extrusion is located at feed controller Between conveying device, and first pressure roller is located between feed controller and conveying device, the second pressure roller is located at charging and controls Between device processed and bed plate.

8. EVA trimmings prilling granulator according to claim 6, it is characterised in that：The cutting knife is rotary cutter, the rotation Cutting knife is cylindrical, and 8 blades are evenly distributed with the outside wall surface of the rotary cutter, when the rotary cutter rotates, each Blade is engaged with bed plate successively, so that EVA rim charges are cut into length as the particle of 2-10mm.

9. EVA trimmings prilling granulator according to claim 8, it is characterised in that：The EVA trimmings prilling granulator also includes The baffle plate on the outside of the conveying device is arranged on, and the baffle plate covers the conveying device towards the side of rotary cutter.

10. EVA trimmings prilling granulator according to claim 5, it is characterised in that：First pressure roller and the second pressure roller Outer surface is made up of the bottom surface of some rectangular pyramids, and the bottom surface of the rectangular pyramid is square.