CN203620866U

CN203620866U - Coating machine for coating diaphragm

Info

Publication number: CN203620866U
Application number: CN201320680995.1U
Authority: CN
Inventors: 闫义水
Original assignee: TIANJIN LIHAO TECHNOLOGY DEVELOPMENT Co Ltd
Current assignee: TIANJIN LIHAO TECHNOLOGY DEVELOPMENT Co Ltd
Priority date: 2013-10-30
Filing date: 2013-10-30
Publication date: 2014-06-04
Anticipated expiration: 2023-10-30

Abstract

The utility model provides a coating machine for coating a diaphragm. The coating machine comprises an unreeling roller, a gluing device, an even number of groups of vertical oven units, traction rollers, a guide roller, a flattening roller, a reeling roller and a main body traction motor, wherein the gluing device consists of a feed liquid groove and a coating roller; the coating roller is arranged above the feed liquid groove; each vertical oven unit consists of a first vertical oven and a second vertical oven which are symmetrically arranged; the unreeling roller, the coating roller, the traction roller, the guide roller, the flattening roller and the reeling roller are linked with the main body traction motor; the unreeling roller is arranged on one side the gluing device, a vertical oven unit is arranged above the gluing device, the traction roller is arranged above each vertical oven unit, and the guide roller is arranged below the other vertical oven unit and is sequentially in transmission connection with the flattening roller and the reeling roller. With the coating machine, a solvent of the diaphragm can be fully dried in a coating system.

Description

A kind of for applying the coating machine of barrier film

Technical field

The utility model relates to battery isolating film and manufactures field, especially a kind of for applying the coating machine of barrier film.

Background technology

The exploitation of lithium ion battery separator material and modification are the most difficult current focuses that realizes New Energy Industry, also be the field that state-of-the art is larger with external gap, its production technology and equipment are mainly large-scale company monopolizings of several families in the world, and China enterprise is difficult to obtain first-class equipment and correlation technique.Its technological difficulties are: the first, with respect to general thin, and lithium electric separator very thin thickness, at present main use model is generally in 20 microns, and leading producer has started to apply the coating barrier film of 9 microns of matrixes in the industry; The second, make because current diaphragm material is commonly pulling method, due to the particularity of technique, laterally the bad and lax problem of strip of curvature for the barrier film matrix ubiquity applying, therefore the uniformity of coating process is difficult to guarantee; Three, because the porosity of barrier film is very high, generally more than 38%, macrovoid barrier film is even more than 50%, and such hole ratio has caused the mechanical strength of barrier film coiled material poor, shows that barrier film hot strength is mutually far short of what is expected with the general thin of the more same material in profile pattern aspect.So membrane surface carries out modification and adds and be difficult to man-hour implement on common film coated machine.

According to the requirement of coating material and application, existing membrane coating machine is much two-sided coating simultaneously, according to traditional experience and cost consideration, mainly to adopt vertical drying oven structure, barrier film disposable oven dry in vertical baking oven region like this, then by suitably traction, the rear rolling of correction.But the needs that now can not meet barrier film coating as such equipment, subject matter is as follows:

According to the needs of lithium battery technology development, barrier film coating is more some stable on heating resin or inorganic ceramic materials of coating now, and these materials generally use the organic solvent (more than 120 ℃) of higher or solid content low and be difficult to complete volatilised liq (as water etc.), for these coating systems, existing equipment is subject to the restriction of vertical baking oven length, very difficult realization completely solvent is dried, and has a strong impact on coating speed, and some coating systems cannot be applied at all even.

Utility model content

It is a kind of for applying the coating machine of barrier film that technical problem to be solved in the utility model is to provide, and described coating machine can effectively solve the oven dry problem in barrier film coating process.

For solving the problems of the technologies described above, the technical solution of the utility model is:

A kind of for applying the coating machine of barrier film, comprise let off roll, glue spreading apparatus, the vertical oven groups of even number set, carry-over pinch rolls, guide roller, nip rolls, wind-up roll and main body traction electric machine, described glue spreading apparatus is made up of material fluid bath and applicator roll, described applicator roll is arranged at described material fluid bath top, described vertical oven groups is made up of symmetrically arranged the first vertical baking oven and the second vertical baking oven, described let off roll, applicator roll, carry-over pinch rolls, guide roller, nip rolls and wind-up roll all link with main body traction electric machine, wherein, described glue spreading apparatus one side is provided with described let off roll, this glue spreading apparatus top is provided with described one group of vertical oven groups, every group of vertical oven groups top is provided with carry-over pinch rolls, described guide roller is arranged at described another and organizes vertical oven groups below, and be in transmission connection with described nip rolls and wind-up roll successively.

Preferably, above-mentioned for applying the coating machine of barrier film, described vertical oven groups is provided with tuyere, wherein, the top tuyere of the vertical oven groups of radix group is that exhaust outlet, bottom tuyere are air inlet, and the top tuyere of the vertical oven groups of even number set is that air inlet, bottom tuyere are exhaust outlet.

Preferably, above-mentioned for applying the coating machine of barrier film, the first vertical baking oven of described vertical oven groups and the height of the second vertical baking oven are 1-2 rice, and with heat blowing device independently.

Preferably, above-mentioned for applying the coating machine of barrier film, described vertical oven groups quantity is 2 groups.

Preferably, above-mentionedly also comprise kneading parts for applying the coating machine of barrier film, described kneading parts are made up of a pair of nip roll setting up and down, and described nip roll is arranged at described carry-over pinch rolls one side, this nip roll and the interlock of described main body traction electric machine.

Preferably, above-mentioned for applying the coating machine of barrier film, the 60-80% that the roller footpath of described nip roll is described guide roller.

Preferably, above-mentioned for applying the coating machine of barrier film, the material of described nip roll is quality of rubber materials.

Preferably, above-mentioned for applying the coating machine of barrier film, the quality of rubber materials of described nip roll is butyl rubber or polyurethane rubber.

The beneficial effects of the utility model are:

Above-mentioned for applying the coating machine of barrier film; the barrier film that is stable on heating resin or inorganic ceramic material for coating designs; make coating system to realize solvent completely to barrier film and dry, effectively guaranteed the quality of production of barrier film, be applicable to the needs that large-scale industrial is produced.

Accompanying drawing explanation

Fig. 1 is described in the utility model for applying the structural representation of coating machine of barrier film;

Fig. 2 is the structural representation of the vertical oven groups of coating machine described in the utility model.

In figure, the vertical baking oven 3-3-of the vertical baking oven 3-2-second of the vertical oven groups 3-1-first of 1-let off roll 2-glue spreading apparatus 3-exhaust outlet 3-4-air inlet 4-carry-over pinch rolls 5-mediates parts 6-guide roller 7-nip rolls 8-wind-up roll

The specific embodiment

In order to make those skilled in the art better understand the technical solution of the utility model, below in conjunction with the drawings and the specific embodiments, technical scheme described in the utility model is described in further detail.

Embodiment 1

A kind of for applying the coating machine of barrier film, comprise let off roll 1, glue spreading apparatus 2, two groups of vertical oven groups 3, carry-over pinch rolls 4, mediate parts 5, guide roller 6, nip rolls 7, wind-up roll 8 and main body traction electric machine, described glue spreading apparatus 2 is made up of material fluid bath and applicator roll, described applicator roll is arranged at described material fluid bath top, described each vertical oven groups 3 is made up of symmetrically arranged the first vertical baking oven 3-1 and the second vertical baking oven 3-2, the first vertical baking oven 3-1 of described vertical oven groups 3 and the height of the second vertical baking oven 3-2 are 2 meters, and with heat blowing device independently, described vertical oven groups 3 is provided with tuyere, wherein, the top tuyere of one group of vertical oven groups 3 is exhaust outlet 3-3, bottom tuyere is air inlet 3-4, another top tuyere of organizing vertical oven groups 3 is air inlet 3-4, bottom tuyere is exhaust outlet 3-3, such structural design is convenient to the biography band trend of barrier film, can reduce the frictional resistance of barrier film transmittance process, improve the drying effect of barrier film, described let off roll 1, applicator roll, carry-over pinch rolls 4, guide roller 6, nip rolls 7 and wind-up roll 8 all link with main body traction electric machine, wherein, described glue spreading apparatus 2 one sides are provided with described let off roll 1, these glue spreading apparatus 2 tops are provided with described one group of vertical oven groups 3, every group of vertical oven groups 3 tops are provided with carry-over pinch rolls 4, described guide roller 6 is arranged at described another and organizes vertical oven groups 3 belows, and be in transmission connection with described nip rolls 7 and wind-up roll 8 successively, described kneading parts 5 are made up of a pair of nip roll setting up and down, the material of this nip roll is butyl rubber, described nip roll is arranged at described carry-over pinch rolls 4 one sides, this nip roll and the interlock of described main body traction electric machine, keep line synchro speed, the setting of described kneading parts 5 can effectively improve barrier film long apart from the problem on deformation under traction condition, reduced the generation of barrier film fold simultaneously, the roller footpath of described nip roll is 70% of described guide roller 6, thereby guarantee good barrier film traction effect.

In use procedure, lithium battery diaphragm matrix is after let off roll 1 unreels, enter glue spreading apparatus 2, membrane surface forms the coating fluid of hygrometric state, then after entering and drying in vertical oven groups 3, barrier film again enters another and organizes vertical oven groups 3 and carry out secondary drying through carry-over pinch rolls 4 with after mediating parts 5, finally complete rolling finally by crossing guide roller 6, nip rolls 7 and wind-up roll 8, obtains the stable coating modified diaphragm in top layer.

Above-mentioned with reference to the specific embodiment to this kind of detailed description of carrying out for applying the coating machine of barrier film; illustrative rather than determinate; can list several embodiment according to institute's limited range; therefore in the variation and the modification that do not depart under the utility model general plotting, within should belonging to protection domain of the present utility model.

Claims

1. one kind for applying the coating machine of barrier film, it is characterized in that: comprise let off roll, glue spreading apparatus, the vertical oven groups of even number set, carry-over pinch rolls, guide roller, nip rolls, wind-up roll and main body traction electric machine, described glue spreading apparatus is made up of material fluid bath and applicator roll, described applicator roll is arranged at described material fluid bath top, described vertical oven groups is made up of symmetrically arranged the first vertical baking oven and the second vertical baking oven, described let off roll, applicator roll, carry-over pinch rolls, guide roller, nip rolls and wind-up roll all link with main body traction electric machine, wherein, described glue spreading apparatus one side is provided with described let off roll, this glue spreading apparatus top is provided with described one group of vertical oven groups, every group of vertical oven groups top is provided with carry-over pinch rolls, described guide roller is arranged at described another and organizes vertical oven groups below, and be in transmission connection with described nip rolls and wind-up roll successively.

2. according to claim 1 for applying the coating machine of barrier film, it is characterized in that: described vertical oven groups is provided with tuyere, wherein, the top tuyere of the vertical oven groups of radix group is that exhaust outlet, bottom tuyere are air inlet, and the top tuyere of the vertical oven groups of even number set is that air inlet, bottom tuyere are exhaust outlet.

3. according to claim 1 for applying the coating machine of barrier film, it is characterized in that: the first vertical baking oven of described vertical oven groups and the height of the second vertical baking oven are 1-2 rice, and with heat blowing device independently.

According to one of claim 1-3 Suo Shu for applying the coating machine of barrier film, it is characterized in that: described vertical oven groups quantity is 2 groups.

5. according to claim 1 for applying the coating machine of barrier film, it is characterized in that: also comprise kneading parts, described kneading parts are made up of a pair of nip roll setting up and down, described nip roll is arranged at described carry-over pinch rolls one side.

6. according to claim 5 for applying the coating machine of barrier film, it is characterized in that: the 60-80% that the roller footpath of described nip roll is described guide roller.

According to described in claim 5 or 6 for applying the coating machine of barrier film, it is characterized in that: the material of described nip roll is quality of rubber materials.

8. according to claim 7 for applying the coating machine of barrier film, it is characterized in that: the quality of rubber materials of described nip roll is butyl rubber or polyurethane rubber.