CN103230861A - An extrusion double-sided coating machine - Google Patents

Abstract

The present invention discloses an extrusion type double-sided coating machine, including a hanging plate, left and right side plates and a base constituting a fuselage shell structure. The coating machine is a two-layer stepped structure, including two groups of front and rear coating mechanisms, the front coating mechanism is installed on the front step, and the rear coating mechanism is installed on the rear step; the two groups of coating mechanisms both include a die head mounting plate assembly, an extrusion die head and a coating valve, the coating valve and the extrusion die head are both installed on the die head mounting plate assembly, the die mouth of the extrusion die head is positively aligned with the substrate, and the extrusion die head is connected to the coating valve through an anti-corrosion hose; a coating back roller is provided at the rear of the front coating mechanism; a vacuum front roller is provided in front of the rear coating mechanism. The present invention adopts a double-sided coating machine head design, which can coat both sides simultaneously in the same operation process, and its coating efficiency is doubled compared with the traditional single-piece coating, and the product quality can reach the same level as the single-sided precision extrusion type.

Description

An extrusion double-sided coating machine

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technical field

The invention relates to the technical field of mechanical equipment, in particular to a coating machine for slurry coating of lithium-ion battery electrode sheet membranes.

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Background technique

Coating machine is a machine used to quantitatively coat liquid (or melt) materials such as adhesives, paints or slurries on the surface of materials. It is suitable for shoe materials, electronics industry, sponge, EVA, PE, cloth, etc. Coating operations in the field. In the electronics industry, extrusion coating or roll coating is usually used to coat lithium-ion battery electrode film slurry, among which extrusion coating is a relatively advanced technology, which can be used for coating higher viscosity fluids and can obtain Higher precision coating. The traditional existing coating technology usually can only coat one side at a time. It needs to finish coating one side (upper side) and then coat the other side (lower side). It cannot coat both sides at the same time, so not only the production efficiency is not high, but also the loss of equipment and materials Also taller.

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Contents of the invention

The technical problem to be solved by the present invention is to provide an extrusion type double-sided coating machine with reasonable structural design and capable of completing double-sided coating in the same process.

In order to solve the above-mentioned technical problems, the present invention adopts the following technical scheme: an extrusion type double-sided coating machine, comprising a suspension plate, left and right side plates and a base constituting the shell structure of the fuselage, the left and right side plates are installed on the base, The hanging board is installed on both sides of the board, and it is characterized in that: the coating machine has a two-layer ladder structure, which includes two sets of coating mechanisms separated on the upper and lower sides of the substrate, and the front coating mechanism is installed on the coating The front step of the coating machine, the rear coating mechanism is installed on the back step of the coating machine; the two sets of coating mechanisms include the die mounting plate assembly, the extrusion die and the coating valve, the coating valve and the extrusion die The heads are all installed on the die mounting plate assembly, the die nozzle of the extrusion die is aligned with the substrate, and the extrusion die is connected to the coating valve through an anti-corrosion rubber hose; the rear of the front coating mechanism is equipped with a support The coating back roller of the base material, the two ends of the coating back roller are respectively fixed on the left and right side plates; the front of the rear coating mechanism is provided with a vacuum front roller, and the hanging plate is installed above the rear coating mechanism.

Further, the die head mounting plate assembly includes a coating head fixing plate and front and rear slide rail fixing plates, the extrusion die is mounted on the coating head fixing plate, and the coating valve is fixed on the front and rear slide rail fixing plates.

Further, the front step of the coating machine is lower than the rear step, and the two side plates are all stepped structures with a low front and a high rear.

Further, a lead-out plate for outputting the base material is provided behind the post-coating mechanism.

Further, an upper support roller is arranged between the coating back roller and the vacuum front roller, and the position of the upper support roller is higher than the coating back roller and lower than the vacuum front roller.

Further, a protective plate is provided under the front coating mechanism, and the protective plate is located above the base material.

When coating on the top, the front extrusion die head is pushed forward by the air cylinder, close to the coating back roller, the gap adjustment mechanism precisely adjusts the gap between the die nozzle and the coating back roller, and the feeding barrel sends the slurry through the front coating valve Before entering the extrusion die, it is sprayed out from the die for coating.

When coating below, the post-extrusion die head is moved upward by the cylinder, close to the base material, and the gap adjustment mechanism precisely adjusts the gap between the die nozzle and the base material, and the material supply barrel enters the post-extrusion slurry through the post-coating valve. Compression die head, ejection from die nozzle for coating.

The present invention adopts the double-sided coating head design (extrusion type) of the front and rear coating mechanisms, and can simultaneously coat both sides in the same operation process, and its coating efficiency is doubled compared with traditional single-chip coating, and the coating The quality of the extruded pole piece can reach the same as that of the single-sided precision extrusion type, such as the coating thickness accuracy of ±0.5-1 micron/single side, and the coating weight accuracy of ±1%.

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Description of drawings

Fig. 1 is a structural principle diagram of the present invention;

Fig. 2 is the overall structure diagram of the present invention;

Fig. 3 is a left front view exploded structure diagram of the present invention;

Fig. 4 is a right front exploded structure diagram of the present invention.

In the figure, 1 is the base material, 2 is the hanging plate, 3 is the side plate, 4 is the coating back roller, 5 is the front die mounting plate assembly, 6 is the front extrusion die, 7 is the front coating valve, 8 9 is the rear extrusion die head, 10 is the base, 11 is the lead-out plate, 12 is the upper support roller, 13 is the vacuum front roller, 14 is the protection plate, 15 is the coating head Fixed plate, 16 is the front and rear slide rail fixed plate, 17 is the anti-corrosion rubber hose, 18 is the sensor, and 19 is the back coating valve.

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Detailed ways

In this embodiment, with reference to Fig. 2, Fig. 3 and Fig. 4, the extrusion type double-sided coating machine includes a hanging plate 2, a left and right side plate 3 and a base 10 constituting the shell structure of the fuselage, and the left and right side plates 3 is installed on the base 10, and the hanging plate 2 is installed on the two side plates 3; the coating machine has a two-layer ladder structure, which includes two groups of coating mechanisms separated on the upper and lower sides of the substrate 1, and the front coating mechanism Installed on the front step of the coating machine, the back coating mechanism is installed on the back step of the coating machine; the two groups of coating mechanisms are the same, and the front coating mechanism includes the front die head mounting plate assembly 5, the front extrusion die The head 6 and the front coating valve 7, the front coating valve 7 and the front extrusion die head 6 are all installed on the front die head mounting plate assembly 5, and the die mouth of the front extrusion die head 6 is aligned with the front of the substrate 1 Above, the front extrusion die 6 is connected to the front coating valve 7 through an anti-corrosion rubber hose 17; the rear of the front coating mechanism is provided with a coating back roller 4 for supporting the substrate 1, and the two ends of the coating back roller 4 respectively fixed on the left and right side plates 3; the rear coating mechanism includes a rear die mounting plate assembly 8, a rear extrusion die 9 and a rear coating valve 19, and the rear coating valve 19 and the rear extrusion die 9 are all installed on On the rear die head mounting plate assembly 8, the die mouth of the rear extrusion die head 9 is aligned directly below the base material 1, and the rear extrusion die head 9 is connected to the rear coating valve 19 through another anti-corrosion rubber hose 17; The front of the cloth mechanism is provided with a vacuum front roller 13, and the hanging plate 2 is installed above the back coating mechanism.

The front die head mounting plate assembly 5 and the front die head mounting plate assembly 8 all include a coating head fixing plate 15 and a front and rear slide rail fixing plate 16, the extrusion die is installed on the coating head fixing plate 15, and the coating valve is fixed on On the front and back slide rail fixing plate 16.

The front step of the coating machine is lower than the next step, and the two side plates 3 are all stepped structures with the front low and the rear high, that is, the coating head for coating the upper surface of the substrate 1 is lower, and the lower surface of the coating substrate is lower. The applicator head is higher on the surface.

A lead-out plate 11 for receiving and outputting the base material 1 is provided at the rear of the post-coating mechanism.

An upper support roller 12 is arranged between the coating back roller 4 and the vacuum front roller 13 , and the position of the upper support roller 12 is higher than the coating back roller 4 and lower than the vacuum front roller 13 .

A protection plate 14 is provided below the front coating mechanism, and the protection plate 14 is located above the substrate 1 .

Referring to FIG. 1 , multiple sensors 18 are arranged on the assembly line before coating, during coating and after coating to detect the coating thickness. When the upper surface of the substrate 1 is coated, the front extrusion die head 6 is pushed forward by the air cylinder, close to the coating back roller 4, the gap adjustment mechanism precisely adjusts the gap between the die mouth and the coating back roller 4, and the feeding barrel will The slurry enters the front extrusion die head 6 through the front coating valve 7, and is sprayed out from the die nozzle for coating.

When the lower surface is coated, the post-extrusion die head 9 is moved upward by the cylinder, and is close to the lower surface of the substrate 1. The gap adjustment mechanism precisely adjusts the gap between the die nozzle and the substrate 1. The post-coating valve 19 enters the post-extrusion die 9 and sprays out from the die for coating.

The present invention has been described in detail above. The foregoing description is only a preferred embodiment of the present invention, and should not limit the implementation scope of the present invention. within the scope of the invention.

Claims (6)

1. squash type unicoater, comprise the boatswain chair, left and right sides plate and the base that constitute the fuselage cover structure, left and right sides plate is installed on the base, boatswain chair is installed on the biside plate, it is characterized in that: this coating machine is two-layer ladder-type structure, it comprises that branch stands in base material two groups of coating mechanisms in front and back of both sides up and down, and preceding coating mechanism is installed on the last ladder of this coating machine, and back coating mechanism is installed on a back ladder of this coating machine; Two groups of coating mechanisms include die head installing plate assembly, extrusion die and coating valve, and coating valve and extrusion die are installed on the die head installing plate assembly, and the mould mouth forward of extrusion die is aimed at base material, and extrusion die connects the coating valve by an anticorrosion sebific duct; The rear of preceding coating mechanism is provided with the coating back flow roll for the support base material, and the two ends of coating back flow roll are separately fixed on the left side plate; The place ahead of back coating mechanism is provided with the vacuum blanket roller, and boatswain chair is installed on the coating mechanism of back.

2. squash type unicoater according to claim 1, it is characterized in that: described die head installing plate assembly comprises dispense tip fixed head and front and back slide rail fixed head, extrusion die is installed on the dispense tip fixed head, and the coating valve is fixed on the slide rail fixed head of front and back.

3. squash type unicoater according to claim 1, it is characterized in that: the last ladder of this coating machine is lower than a ladder thereafter, and biside plate is low early and high after ladder-type structure.

4. squash type unicoater according to claim 1 is characterized in that: be provided be used to the derivation plate of chartering Torquay material output at the rear of back coating mechanism.

5. squash type unicoater according to claim 1 is characterized in that: be provided with the pop-up roller tube between coating back flow roll and vacuum blanket roller, the position of pop-up roller tube is higher than and is coated with back flow roll, is lower than the vacuum blanket roller.

6. squash type unicoater according to claim 1, it is characterized in that: be provided with baffle below preceding coating mechanism, baffle is positioned at the top of base material.

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