CN218132976U

CN218132976U - Comma coating equipment

Info

Publication number: CN218132976U
Application number: CN202221474551.8U
Authority: CN
Inventors: 王威振; 程军; 刘永春
Original assignee: Shaoxing Xuyuan New Material Technology Co ltd
Current assignee: Shaoxing Xuyuan New Material Technology Co ltd
Priority date: 2022-06-13
Filing date: 2022-06-13
Publication date: 2022-12-27
Anticipated expiration: 2032-06-13

Abstract

The utility model relates to the field of coating equipment, in particular to comma coating equipment which is used for coating glue solution on a membrane material and comprises a frame, a comma scraper back roll and a glue coating groove, wherein a glue coating gap is arranged between the comma scraper and the back roll, and the glue coating groove is arranged on the glue facing side of the back roll; a process of casting the dope attached to the film between the glue spreading tank and the comma blade in the circumferential direction of the backing roll is set as a casting process formed on the glue-facing side of the backing roll; the glue coating groove is arranged on the frame in a mode that the distance between the glue coating groove and the comma scraper is adjustable, so that the casting stroke is adjusted. The utility model discloses can effectively prevent to produce the streak on the membrane material, improve the product quality.

Description

Comma coating equipment

Technical Field

The utility model relates to a coating machine technical field especially relates to a comma coating equipment.

Background

The coating machine is mainly used for the surface coating process production of films, paper and the like, and the coating machine coats a layer of glue, paint or ink with specific functions on a coiled base material, dries and then winds the base material. The coating machine adopts a special multifunctional coating head, can realize the generation of surface coating in various forms, is provided with a full-speed automatic film receiving mechanism for winding and unwinding, and is automatically controlled by a PLC program tension closed loop.

One side at scraper roller and backing roll sets up the glue spreader at current comma coater, and the glue solution has been held in the glue spreader, and the glue solution is attached to the back on the membrane material, moves to scraper department along the circumference of backing roll, and behind the scraper, unnecessary glue solution is scraped by the scraper on the membrane material. And in the moving process of the glue solution, part of the glue solution flows back to the gluing tank, and gas is easily wrapped in the glue solution to form bubbles along with the stirring of the stirring device. For the glue solution with good fluidity, the air bubbles are easy to break by themselves in the flowing process, but for the glue solution with poor fluidity, the air bubbles may pass through a scraper and be retained in the glue solution on the membrane material, so that inferior products are generated.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that overcome prior art not enough, and provide a comma coating equipment that can prevent to form strip invariant on the membrane material.

In order to achieve the purpose, the utility model adopts the technical scheme as follows:

a comma coating device comprises a frame, a comma scraper, a back roll and a glue coating groove, wherein a glue coating gap is formed between the comma scraper and the back roll, and the glue coating groove is formed in the glue facing side of the back roll; a process of casting the dope attached to the film between the glue spreading tank and the comma blade in the circumferential direction of the backing roll is set as a casting process formed on the glue-facing side of the backing roll; the glue coating groove is arranged on the frame in a mode that the distance between the glue coating groove and the comma scraper is adjustable, so that the casting stroke is adjusted.

The technical scheme can be further perfected as follows:

preferably, the glue coating groove comprises a lower glue baffle and two oppositely arranged side glue baffles, and the lower glue baffle and the two side glue baffles surround to form the glue coating groove. And the lower rubber baffle and the side rubber baffle are both attached to the back roll.

Preferably, the glue slot is coupled to the frame by a distance adjustment device comprising: the first adjusting mechanism is used for adjusting the position of the gluing groove in the vertical direction; and a second adjusting mechanism for adjusting the position of the glue spreading groove in the front-rear direction.

Preferably, the first adjustment mechanism includes: the first sliding chute is arranged on the frame; and a first slide block connected to the glue spreading groove; the first sliding block is in sliding fit with the first sliding groove and can be kept at a set position in the first sliding groove.

Preferably, the first adjustment mechanism further comprises a first driver for driving the first slider. The first adjusting structure further comprises a movable gear and a pair of racks, and the movable gear is meshed between the racks; one of the racks is a movable rack, the other rack is a fixed rack, and the movable rack is in transmission connection with the first driver; wherein the movable gear is rotatably connected to the slider to rotate as it moves along with the movable rack.

Preferably, the second adjustment mechanism includes: the second sliding chute is arranged on the first sliding block; and a second slide block connected to the glue coating groove; the second sliding block is in sliding fit with the second sliding groove and can be kept at a set position in the second sliding groove. The second adjusting mechanism further comprises a screw and a nut, the screw is fixedly connected with the second sliding block, and the nut and the screw are tightly locked and matched to keep the second sliding block at a set position.

Preferably, a stirring mechanism capable of moving in the longitudinal direction of the glue coating tank is arranged above the glue coating tank.

Owing to adopted above technical scheme, the utility model discloses following beneficial effect has:

the utility model discloses a glue spreader sets up in the frame with relative comma scraper apart from adjustable mode to the extension glue solution is along the ascending curtain coating stroke of backing roll circumference, under the action of gravity, its thickness attenuation gradually in the glue solution removal process, thereby makes the parcel bubble break by oneself in the glue solution at the removal in-process, and then has solved the technical problem that the lower glue solution of mobility produced the streak easily on the membrane material.

Drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the drawings of the embodiments will be briefly described below, and it is obvious that the drawings in the following description only relate to some embodiments of the present invention, and are not intended to limit the present invention.

Fig. 1 is a schematic overall structure diagram of the first embodiment.

Fig. 2 is an exploded view of fig. 1.

Fig. 3 is a cross-sectional view of fig. 1.

Reference numerals:

1. a frame; 101. a first chute; 2. a backing roll; 3. a comma scraper; 4. gluing a slot; 401. a lower rubber baffle plate; 402. a side rubber blocking plate; 5. a first adjustment mechanism; 501. a first slider; 501a, a second chute; 502. a first driver; 6. a second adjustment mechanism; 601. a second slider; 602. a nut; 7. a stirring mechanism; 8. film material; 801. and (4) casting process.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of "first," "second," and similar terms in the description and in the claims does not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a," "an," or "the" and similar referents do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, and does not exclude other elements or items. "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are used only to indicate relative positional relationships that may change when the absolute position of an object being described changes, and are merely for convenience in describing the invention and to simplify the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Features in the embodiments described below may be combined with each other without conflict.

The first embodiment is as follows:

referring to fig. 1-3, the utility model provides a comma coating apparatus for coating glue solution on a film material, comprising a frame 1, a comma scraper 3, a backing roll 2 and a glue coating slot 4, wherein a glue coating gap is arranged between the comma scraper 3 and the backing roll 2, and the glue coating slot 4 is arranged on the glue facing side of the backing roll 2; a process of casting the glue solution attached to the film material between the glue coating tank 4 and the comma doctor 3 along the circumferential direction of the backing roll 2 is set as a casting process 801, the casting process 801 is formed on the glue facing side of the backing roll, the glue facing side refers to the side of the backing roll 2 facing the glue coating tank 4, and the film material 8 is attached to the backing roll 2 on the glue facing side and coated with the glue solution; the glue coating groove 4 is arranged on the frame 1 in a mode of adjusting the distance relative to the comma scraper 3 so as to adjust the casting stroke 801 according to the fluidity condition of glue solution. For the glue solution with good fluidity, a smaller casting stroke needs to be set in order to ensure the thickness of the coating glue solution, for the glue solution with poor fluidity, the casting stroke of the glue solution needs to be increased in order to ensure that bubbles are broken in the casting process, and the bubbles wrapped in the glue solution can be automatically broken along with the gradual thinning of the glue solution due to the extension of the casting stroke of the glue solution, so that the generation of streaks on a membrane material is prevented, and the generation of inferior quality products is avoided.

As shown in fig. 3, the glue groove 4 is arranged obliquely relative to the horizontal plane, and the right end of the glue groove is attached to the back roller 2 to prevent the glue in the glue groove 4 from leaking between the glue groove and the back roller, because the glue has a certain viscosity, the end of the glue groove 4 is prevented from damaging the film material 8 to be coated, a tiny gap is arranged between the glue groove 4 and the back roller 2, and in the rotating process of the back roller 2, because the glue facing side of the back roller 2 rotates upwards, an upward acting force can be generated on the glue at the gap, and the acting force can prevent the glue from leaking from the gap.

The flow path refers to a casting length from the start of the coating of the dope on the film 8 to the end of the coating of the dope on the film 8 by the comma blade 3, and specifically, the flow path is a distance extending along the outer peripheral surface of the backing roll 2 from the joining position of the coating tank 4 with the backing roll 2 to the joining position of the comma blade 3 with the backing roll 2, and the distance is a distance extending in the circumferential direction of the backing roll 2. Glue solution in the glue spreader 4 is attached to back on membrane material 8, under the rotation of backing roll 2, follows membrane material 8 rebound, and at the removal in-process, because the action of gravity, the glue solution attached to on membrane material 8 can produce the curtain coating along membrane material 8. The glue solutions with different viscosities have different casting performances, the lower the viscosity is, the better the casting performance of the glue solution is, the thinner the glue solution reaches the scraper 3, the bubbles wrapped in the glue solution are easier to break by themselves, and the bubbles cannot be left on the film material after passing through the comma scraper 3. For the glue solution with higher viscosity, the casting performance is poorer, the thickness of the glue solution reaching the scraper 3 is thicker, bubbles wrapped in the glue solution are not easy to break, and a streak is formed on the membrane material 8 after passing through the scraper 3, so that a defective product is generated. The distance between the glue coating tank 4 and the comma scraper 3 is changed to prolong the casting stroke 801 of the glue solution, so that the glue solution can be cast more fully, and the condition that the streak is generated on the membrane material 8 is effectively avoided.

In this embodiment, the glue spreading groove 4 includes a lower glue blocking plate 401 and two side glue blocking plates 402 arranged oppositely, and the glue blocking plate 401 and the two side glue blocking plates 402 surround to form the glue spreading groove 4. The lower glue blocking plate 401 and the side glue blocking plate 402 are both attached to the back roll, and it should be emphasized that, according to the description of the previous section, the attachment does not mean that there is no gap, as long as it is ensured that the glue solution in the glue spreading tank 4 does not leak outwards. Specifically, the spacing between the two side glue barriers 402 can be adjusted to accommodate films 8 of different widths. In an embodiment, the side glue blocking plate 402 may be locked on the lower glue blocking plate 401 by using a clamp-type structure, that is, a jaw for clamping the lower glue blocking plate 401 by a user is disposed on the side glue blocking plate 402, and then the locking screw is rotated to lock the side glue blocking plate 402, and when the side glue blocking plate 402 needs to be moved, the locking screw is released.

As shown in fig. 1 and 2, the glue slot 4 is engaged to the frame 1 by means of a distance adjustment device comprising: the first adjusting mechanism 5 is used for adjusting the position of the glue coating groove 4 in the vertical direction; the second adjusting mechanism 6 is used for adjusting the position of the glue coating groove 4 in the front-back direction; wherein the glue spreading groove 4 moves along the up-down direction to be close to or far away from the comma scraper 3; wherein the glue spreading groove 4 moves in the front-rear direction to approach or separate from the back roller. In the present embodiment, the up-down direction is a vertical direction, and the glue applying slot 4 is movable in the up-down direction to be close to or away from the vertical direction to reduce or increase the casting stroke 801 formed between the glue applying slot 4 and the comma blade 3. Because the glue facing side of the back roll 2 is a curved surface, the gap between the glue coating groove 4 and the back roll 2 can be changed after the glue coating groove 4 moves up and down, and the glue coating groove 4 can move in the front and back directions to enable the glue coating groove to be close to or far away from the back roll 2. The glue groove 4 is far away from the back roller 2, so that a space can be provided for the glue groove to move in the up-down direction, and the glue groove 4 is close to the back roller 2, so that the glue groove can be attached to the back roller 2 after the casting stroke 801 is adjusted. In the present embodiment, the front-rear direction is the horizontal direction. The up-down direction and the front-back direction can be set to other directions by those skilled in the art according to the adjustment principle.

As a preferred embodiment, the first adjustment mechanism 5 includes: a first chute 101 provided in the frame 1; and a first slider 501 attached to the glue spreading groove 4; the first slider 501 is slidably engaged with the first sliding chute 101, and can be held at a set position in the first sliding chute 101. The first adjustment mechanism 5 further comprises a first driver 502 for driving the first slider 501. The first adjustment structure further includes a movable gear that is rotatable about a central axis thereof to prevent jamming, and a pair of racks. The movable gear is engaged between the pair of racks and can move along the fixed rack. One of the racks is a movable rack, and the other rack is a fixed rack, and the movable rack is in transmission connection with the first driver 502; wherein the movable gear is rotatably connected to the slider to rotate when it moves following the movable rack. The first actuator 502 is a cylinder, or a linear motor, in this embodiment, a cylinder. The first sliding block 501 is connected to the telescopic rod of the oil cylinder. The two first adjusting mechanisms 5 are respectively positioned at two ends of the glue coating groove 4 so as to drive the glue coating groove 4 to move upwards integrally. In another embodiment, the first sliding block 501 may be locked in the first sliding groove 101 by using a bolt and nut structure, and the glue spreading grooves 4 may be supported in stages by using a matching step structure.

As a preferred embodiment, the second adjusting mechanism 6 includes: a second chute 501a provided on the first slider 501; and a second slide block 601 connected to the glue spreading groove 4; the second slider 601 is slidably engaged with the second sliding slot 501a, and can be held at a set position in the second sliding slot 501a. The second adjusting mechanism 6 further comprises a screw and a nut 602, the screw is fixedly connected with the second slider 601, and the screw and the second slider can be integrally formed or can be respectively formed and then fixedly connected into a whole. The nut 602 and screw are locked in a tight fit to hold the second slide 601 in a set position, and the position of the second slide 601 can be adjusted by releasing the nut 602.

Preferably, an agitating mechanism 7 capable of moving in the length direction of the glue coating tank 4 is arranged above the glue coating tank 4, the agitating mechanism 7 can be driven by a screw nut mechanism or an air cylinder along the length direction of the glue coating tank 4, and an agitating shovel can be fixed on one side of a synchronous belt and can move along the synchronous belt to agitate glue solution. That is, under the prerequisite of not considering the cost, the linear motion mechanism that can realize long stroke in principle can all use after transforming the utility model discloses in.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A comma coating device is used for coating glue solution on a membrane material and comprises a frame, a comma scraper, a back roll and a glue coating groove, wherein a glue coating gap is arranged between the comma scraper and the back roll, and the glue coating groove is arranged on the glue facing side of the back roll; the method is characterized in that:

a flow-casting stroke of the adhesive solution attached to the film material between the glue-coating tank and the comma scraper along the circumferential direction of the back roller is set as a flow-casting stroke, and the flow-casting stroke is formed on the glue-facing side of the back roller;

the glue coating groove is arranged on the frame in a mode that the distance between the glue coating groove and the comma scraper is adjustable, so that the casting stroke is adjusted.

2. The comma coating apparatus of claim 1, wherein the glue-coating slot comprises a lower glue-blocking plate and two oppositely disposed side glue-blocking plates, the lower glue-blocking plate and the two side glue-blocking plates enclosing to form the glue-coating slot.

3. The comma coating apparatus of claim 2, wherein the lower dam and the side dams are each positioned in engagement with a backing roll.

4. Comma coating apparatus according to claim 1, characterized in that said glue-coating slot is joined to the frame by a distance-adjusting device comprising:

the first adjusting mechanism is used for adjusting the position of the gluing groove in the vertical direction; and

and the second adjusting mechanism is used for adjusting the position of the gluing groove in the front-back direction.

5. The comma coating apparatus of claim 4, wherein the first adjustment mechanism comprises:

the first sliding chute is arranged on the frame; and

the first sliding block is connected to the glue coating groove;

the first sliding block is in sliding fit with the first sliding groove and can be kept at a set position in the first sliding groove.

6. The comma coating apparatus of claim 5, wherein said first adjustment mechanism further comprises a first driver for driving said first slide.

7. The comma coating apparatus of claim 6, wherein said first adjustment structure further comprises a movable gear and a pair of racks, said movable gear being engaged between said pair of racks;

one of the racks is a movable rack, the other rack is a fixed rack, and the movable rack is in transmission connection with the first driver;

wherein the movable gear is rotatably connected to the slider to rotate as it moves along with the movable rack.

8. The comma coating apparatus of claim 5, wherein said second adjustment mechanism comprises:

the second sliding chute is arranged on the first sliding block; and

the second sliding block is connected to the glue coating groove;

the second sliding block is in sliding fit with the second sliding groove and can be kept at a set position in the second sliding groove.

9. The comma coating apparatus of claim 8, wherein the second adjustment mechanism further comprises a screw affixed to the second slide and a nut in locking engagement to hold the second slide in a set position.

10. The comma coating apparatus according to claim 1, wherein a stirring mechanism capable of reciprocating in a longitudinal direction of the glue coating tank is provided above the glue coating tank.