CN215964449U - Upper feeding three-roller reverse roller painting device - Google Patents

Abstract

The utility model provides an upper feeding three-roller reverse coating device, which comprises a device body, wherein the device body comprises: a transfer roller for transferring a metal substrate to be coated; the three-roller reverse roller coating assembly comprises a metering roller, a material carrying roller and a coating roller; the coating roller and the transmission roller are respectively pressed on the upper surface and the lower surface of the metal substrate from two sides; the feeding assembly comprises a feeding groove and a discharging box which are communicated, and the discharging box is arranged above the three-roller reverse roller coating assembly and is provided with an outlet for guiding the coating to a roller gap between the metering roller and the material carrying roller; the bottom wall of the feed groove is inclined downward in the paint flowing direction to guide the paint in the feed groove to flow to the discharge box. The feeding assembly is located above the three-roller reverse roller coating assembly, and under the action of gravity of the coating, the coating is thrown between the metering roller and the material carrying roller on the three-roller reverse roller coating assembly by the feeding assembly, so that the coating stored by the feeding assembly can be fully utilized, and the waste of the coating is reduced. The downward sloping of feed tank diapire along coating flow direction to the speed of material play magazine in the acceleration feed tank improves feeding assembly's feed efficiency.

Description

Upper feeding three-roller reverse roller painting device

Technical Field

The utility model relates to the technical field of coating equipment, in particular to an upper feeding three-roller reverse roller coating device.

Background

The color plate is a product prepared by performing surface pretreatment (degreasing, cleaning and chemical conversion treatment) on a metal substrate such as a galvanized steel plate, an aluminum-galvanized steel plate, an aluminum alloy, stainless steel and the like, coating a coating material (a pre-roll coating method) by a continuous method, and baking and cooling the coated product. The roll coater is a core device in a roll coating process, determines the thickness and uniformity of a coating on the surface of a material, has a great influence on the operation efficiency of a machine set, and is the most common and widely used coating device at present. The roller coater comprises a front coating mechanism, a back coating mechanism, a supporting roller and a steering roller, wherein the front coating mechanism, the back coating mechanism, the supporting roller and the steering roller are connected through a metal plate strip, the front coating mechanism and the back coating mechanism respectively comprise a strip roller for dipping coating from a coating tray, a coating roller for coating the coating on the strip roller on the surface of the metal plate strip and a metering roller for controlling the thickness of the coating dipped by the strip roller, and the metering roller, the strip roller and the coating roller are controlled to move by separate motors. According to the technical scheme, the coating is dipped from the coating disc through the material carrying roller in the double-roller coating device, then the coating is transferred to the coating roller, and the coating roller coats the coating on the surface of the metal plate strip to finish roller coating. The above scheme has the following defects: the manner of picking up paint from the paint tray requires that sufficient paint be placed in the paint tray to flood the bottom of the take-up roll, which is inefficient in utilizing the paint at the bottom of the paint tray and is wasteful.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides an upper feeding three-roller reverse coating device which can fully utilize the paint stored in a feeding assembly and reduce the waste of the paint

In order to achieve the above object, the present invention is achieved by the following technical solutions.

The utility model provides an upper feeding three-roller reverse coating device, which comprises a device body, wherein the device body comprises:

a transfer roller for transferring a metal substrate to be coated;

the three-roller reverse roller coating assembly comprises a metering roller, a material carrying roller and a coating roller which are sequentially and rotatably connected to the rack along the direction facing the conveying roller; the coating roller and the transmission roller are respectively pressed against the upper surface and the lower surface of the metal substrate from two sides;

the feeding assembly comprises a feeding groove and a discharging box which are communicated, and the feeding groove and the discharging box are both positioned above the three-roller reverse roller coating assembly; the discharging box is provided with an outlet used for guiding the coating to a roll gap between the metering roll and the material carrying roll;

the bottom wall of the feeding groove is inclined downwards along the flowing direction of the coating to guide the coating in the feeding groove to flow to the discharging box.

Preferably, the outlet is located remote from the feedwell; the bottom of the inner wall of the discharging box inclines downwards along the flowing direction.

Preferably, the outlet is arranged in the middle of the bottom wall of the discharging box; the bottom wall of the material outlet box is funnel-shaped.

Preferably, the direction of the paint flow in the outlet box intersects with the direction of the paint flow in the feeding groove.

Preferably, the feeding groove is provided with a flow guide part; the flow guide part inclines towards the direction of the material outlet box so as to guide the coating in the feeding groove to flow to the material outlet box.

Preferably, the material outlet box is arranged close to the end of the material supply groove.

Preferably, a flow guide pipeline is arranged at the bottom of the material outlet box to guide the coating to flow to a roller gap between the metering roller and the material carrying roller.

Preferably, the material outlet box comprises a box body and a side plate; the two sides of the side plate are bent towards the box body to form a first joint part and a second joint part; the first joint part and the second joint part are respectively connected to two sides of the box body; and a space is arranged between the side plate and the box body to form the outlet.

Preferably, the bottom of the side plate extends out of the bottom of the box body; the first joint part and the second joint part are respectively connected to two sides of the box body in a rotating way; the side plate rotates relative to the box body, and the inclination angle of the bottom of the side plate is changed, so that the discharging direction of the outlet is adjusted.

Preferably, a plurality of filter plates with filter holes are longitudinally arranged in the feed tank and/or the discharge box.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model provides an upper feeding three-roller reverse coating device, wherein a feeding assembly is positioned above a three-roller reverse roller coating assembly, and under the action of gravity of coating, the feeding assembly feeds the coating between a metering roller and a material carrying roller from the upper direction of the three-roller reverse roller coating assembly, so that the coating stored by the feeding assembly can be fully utilized, and the waste of the coating is reduced. The downward sloping of feed tank diapire along coating flow direction to the speed of material play magazine in the acceleration feed tank improves feeding assembly's feed efficiency.

In a preferred scheme, ejection of compact box includes box body and curb plate, and the curb plate both sides are rotated and are connected in the box body both sides, through the turned angle who adjusts the relative box body of curb plate to adjust the inclination that the curb plate stretches out the position of box body bottom, and then the ejection of compact angle of control ejection of compact box, ejection of compact angle modulation is convenient.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood and to be implemented according to the content of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings. The detailed description of the present invention is given in detail by the following examples and the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the utility model without limiting the utility model. In the drawings:

FIG. 1 is a first perspective view of the device body according to the present invention;

FIG. 2 is a side view of the device body of the present invention;

FIG. 3 is a second perspective view of the device body according to the present invention;

FIG. 4 is a first schematic perspective view of the material outlet box according to an embodiment of the present invention;

FIG. 5 is a second schematic perspective view of the material outlet box according to an embodiment of the present invention;

fig. 6 is a top view of a device body according to an embodiment of the utility model.

100. A device body; 10. a transfer roller; 20. a three-roller reverse roller coating assembly; 21. a metering roll; 22. a belt roll; 23. a coating roll; 30. a supply assembly; 31. a feeding tank; 311. a flow guide part; 312. an extension portion; 32. discharging the material box; 321. an outlet; 322. a diversion pipeline; 323. a box body; 324. a side plate; 3241. A first engagement portion; 32411. a first chute; 3242. a second engagement portion; 32421. a second chute; 36. a first filter plate; 40. a guide roller; 50. collecting tank; 51. leading out the pipeline; 60. a scraper;

200. a metal substrate.

Detailed Description

The foregoing and other objects, features, aspects and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, which will enable those skilled in the art to practice the present invention with reference to the accompanying specification. In the drawings, the shape and size may be exaggerated for clarity, and the same reference numerals will be used throughout the drawings to designate the same or similar components. In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, and the like are used based on the orientation or positional relationship shown in the drawings. In particular, "height" corresponds to the dimension from top to bottom, "width" corresponds to the dimension from left to right, and "depth" corresponds to the dimension from front to back. These relative terms are for convenience of description and are not generally intended to require a particular orientation. Terms concerning attachments, coupling and the like (e.g., "connected" and "attached") refer to a relationship wherein structures are secured or attached, either directly or indirectly, to one another through intervening structures, as well as both movable or rigid attachments or relationships, unless expressly described otherwise.

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.

Example 1

The utility model provides an upper feeding three-roller reverse coating device, as shown in fig. 1, fig. 2 and fig. 3, comprising a device body 100, wherein the device body 100 comprises:

a transfer roller 10 for transferring the metal substrate 200 to be coated;

the three-roller reverse roller coating assembly 20 comprises a metering roller 21, a material carrying roller 22 and a coating roller 23 which are sequentially connected with the rack in a rotating manner along the direction towards the conveying roller 10; the coating roller 23 and the transmission roller 10 are respectively pressed against the upper surface and the lower surface of the metal substrate 2 from two sides;

the feeding assembly 30 comprises a feeding groove 31 and a discharging box 32 which are communicated with each other and are positioned above the three-roller reverse roller coating assembly 20; the discharging box 32 is provided with an outlet 321 for guiding the coating to a roller gap between the metering roller 21 and the material carrying roller 22; the material is fed from the upper part of the three-roller reverse roller coating assembly 20 to replace the traditional scheme of feeding by adopting a tray below the roller coating roller, so that the defects of floating color, bright lines, linear scratches and the like on the surface of the metal substrate 2 are reduced to a certain extent, and the coating surface quality is improved; the coating in the feeding assembly 30 can be fully utilized, and the waste of the coating is avoided;

the bottom wall of the supply groove 31 is inclined downward in the paint flowing direction to guide the paint in the supply groove 31 to flow to the discharge box 32. Specifically, as shown in fig. 2, the supply assembly 30 supplies the coating material between the metering roller 21 and the material carrying roller 22, the metering roller 21 rotates reversely at a slow speed relative to the material carrying roller 22, the coating material is squeezed at a contact position of the metering roller 21 and the material carrying roller 22, so that the coating material overflows to both sides, and the metering roller 21 is used for adjusting the thickness of the coating material attached to the surface of the material carrying roller 22. The tape roll 22 and the coating roll 23 rotate in the opposite direction, the transfer roll and the coating roll 23 rotate in the same direction, and the coating material of the tape roll 22 is transferred to the coating roll 23 to coat one surface of the metal substrate 200 facing the coating roll 23. The bottom wall of the feeding groove 31 is obliquely arranged to accelerate the speed of the coating flowing out of the material box 32, so that the roller coating efficiency is improved.

Further, the apparatus body 100 further includes a first moving assembly for adjusting a distance between the metering roller 21 and the tape roll 22 to adjust a thickness of the paint attached to the tape roll 22.

Further, the feeding assembly 30 is a stainless steel member, which has a certain strength, is corrosion resistant, and has a long service life.

In one embodiment, as shown in fig. 1, the feeding assembly 30 further has a storage box 33 disposed above the feeding trough 31. The storage box 33 is provided with an opening at the bottom thereof to communicate with the feeding groove 31. Further, a flow valve is arranged at the opening. Before the apparatus body 1 is operated, a certain amount of paint is stored in the magazine 33. When the device body 1 operates, the flow valve is opened, and the paint in the storage box 33 enters the feeding groove 31 at a certain speed. Furthermore, two sides of the corresponding position of the feeding slot 31 and the storage box 33 respectively extend upwards to form an extending portion 312, so as to increase the distance between the storage box 33 and the feeding slot 31, so as to increase the speed of the paint falling from the storage box 33, and prevent the paint from splashing out of the feeding assembly 30 when the paint falls from the storage box 33.

In one embodiment, the feeding assembly 30 includes a support rod 34 and a connecting rod 35, and both sides of the connecting rod 35 are supported on the ground through the support rod 34. The supply tank 31 is disposed within the connecting rod 35. The feeding assembly 30 has a simple structure and is convenient to install.

In one embodiment, the outlet 321 is located remotely from the feed tank 31; the bottom of the inner wall of the discharging box 32 inclines downwards along the flowing direction, that is, the bottom of the inner wall of the discharging box 32 inclines downwards towards the outlet 321, so as to guide the paint in the discharging box 32 to the outlet 321, so as to accelerate the discharging speed of the discharging box 32, and further accelerate the feeding speed of the feeding assembly 30. In another embodiment, the outlet 321 is disposed at a middle position of the bottom wall of the material outlet box 32; the bottom wall of the discharging box 32 is funnel-shaped (not shown in the figure) to guide the coating inside the discharging box 32 to the outlet 321, so as to accelerate the discharging speed of the discharging box 32.

In one embodiment, as shown in fig. 1, the flowing direction of the paint in the discharging box 32 intersects with the flowing direction of the paint in the feeding groove 31, and by changing the flowing direction of the discharging box 32 relative to the paint in the feeding groove 31, the speed of the paint in the feeding groove 31 entering the discharging box 32 is reduced, so as to prevent the outlet 321 of the discharging box 32 from discharging untimely, and the paint in the discharging box 32 enters the feeding groove 31 too much, which leads to overflow of the paint in the discharging box 32 and pollutes the three-roller reverse roller coating assembly 20 on the outer wall of the discharging box 32 below the feeding group opinion 30.

Furthermore, the included angle between the flowing direction of the coating in the material outlet box 32 and the flowing direction of the coating in the feeding groove 31 is 90-120 degrees, namely the corner at the joint of the feeding groove 31 and the material outlet box 32 is 90-120 degrees, so that the coating in the feeding groove 31 can flow into the material outlet box 32 conveniently.

Further, as shown in fig. 3, the feeding tank 31 is provided with a flow guide portion 311; the flow guiding portion 311 is inclined toward the material discharging box 32 to guide the paint in the feeding groove 31 to flow toward the material discharging box 32. Because the flowing directions of the coatings in the feeding groove 31 and the discharging box 32 are different, the flowing direction of the coatings in the feeding groove 31 can be changed when the coatings flow to the discharging box 32, and the probability of turbulent flow caused by the sudden change of the flowing direction of the coatings is reduced by arranging the flow guide part 311, so that the coatings are prevented from splashing. Furthermore, one end of the feeding groove 31 close to the discharging box 32 inclines towards the discharging box 32 to form the flow guide part 311, and the structure is simple.

Further, the inner bottom wall of the supply groove 31 is inclined downward toward the side of the material outlet box 32, so that the coating material in the supply groove 31 flows toward the material outlet box 32.

In one embodiment, the material outlet box 32 is disposed near the end of the material supply groove 31, so that the coating material in the material supply groove 31 flows to the end of the material supply groove 31 and then changes direction to enter the material outlet box 32, on one hand, the residence time of the coating material in the material supply groove 31 is prolonged, so as to prevent overflow when the outlet 321 of the material outlet box 32 discharges in short time, on the other hand, the number of times of change of the flow direction of the coating material in the process that the material supply groove 31 flows to the material outlet box 32 is reduced, so as to reduce the occurrence rate of turbulence.

In one embodiment, as shown in fig. 2, a diversion pipe 322 is provided at the bottom of the material outlet box 32 to guide the coating material to flow to the gap between the metering roll 21 and the strip roll 22, so that the coating material supplied from the material outlet box 32 can be accurately thrown at the gap between the metering roll 21 and the strip roll 22, and the coating material is prevented from scattering on the surfaces of the rolls of the three-roll reverse roll coating assembly 30, which results in uneven distribution of the coating material on the surfaces of the corresponding rolls.

In yet another embodiment, as shown in fig. 4 and 5, the discharging box 32 includes a box body 323 and a side plate 324; two sides of the side plate 324 are bent towards the box body 323 to form a first connecting part 3241 and a second connecting part 3242; the first engagement portion 3241 and the second engagement portion 3242 are respectively connected to two sides of the box body 323; a space is provided between the side plate 324 and the box body 323 to form the outlet 321. Further, the bottom of the side plate 324 extends out of the bottom of the box body 323; the first connection part and the second connection part are respectively connected to two sides of the box body 323 in a rotating way; the side plate 324 rotates relative to the box body 323, and the inclination angle of the bottom of the side plate 324 is changed, so as to adjust the discharging direction of the outlet 321. Because the bottom of the side plate 324 extends out of the bottom of the box body 323, when the inclination angle of the side plate 324 is changed, the flow guiding direction of the bottom of the side plate 324 is changed, and the discharging direction of the discharging box 32 can be adjusted at any time. Further, the first engaging portion 3241 and the second engaging portion 3242 are respectively provided with a first sliding slot 32411 and a second sliding slot 32421, and the first rotating shaft and the second rotating shaft provided at two sides of the box body 323 can slide in the first engaging portion 3241 and the second engaging portion 3242 respectively, so as to adjust a maximum angle at which the side plate 324 can rotate relative to the box body 323, and further adjust a maximum inclination angle of the side plate 324 relative to the box body 323. Further, the height of the side plate 324 is more than or equal to twice the height of the box body 323, so that the bottom of the side plate 324 extends out of the bottom of the box body 323 by the longitudinal movement of the side plate 324 relative to the box body 323, and further, the distance between the bottom of the side plate 324 and the roll gap between the metering roll 21 and the material-carrying roll 22 is adjusted, and further, the discharging effect of the outlet 321 is adjusted.

In one embodiment, a plurality of filter plates with filter holes are longitudinally arranged in the feed tank 31 and/or the discharge box 32. The number of filter plates in the feed tank 31 and/or the discharge box 32 can be one; at least two filter plates can be arranged, and the adjacent two filter plates are staggered and form a bent channel. Specifically describing the example of the feeding tank 31, as shown in fig. 6, in one embodiment, the number of the first filter plates 36 in the feeding tank 31 is one, the first filter plates 36 are perpendicular to the flowing direction of the paint in the feeding tank 31, and the paint in the feeding tank 31 is filtered by the first filter plates 36 to reduce the content of impurities in the paint. In yet another embodiment, the number of the first filter plates 36 in the feed tank 31 is at least two, and two adjacent filter plates are connected to the two opposite inner walls of the feed tank 31 in an interlaced manner to form a curved passage, so that the influence of the filter plates on the flow rate of the paint is reduced while the impurities of the paint are filtered.

In one embodiment, as shown in fig. 2, the apparatus body 1 further includes a guide roller 40 to change the conveying direction of the metal substrate 200 to make reasonable use of the empty space of the apparatus body 1.

In one embodiment, as shown in fig. 2, the apparatus body 1 further includes a collecting tank 50 for collecting the paint falling from the three-roll reverse roll coating assembly 20 to prevent the paint from contaminating the apparatus body 1 or the floor. Further, a guiding pipeline 51 is arranged at the bottom of the collecting tank 50, and the guiding pipeline 51 is connected with a recoverer to recover the coating, so that the coating can be applied to products with low requirements on the coating.

Further, as shown in fig. 2, a scraper 60 is disposed on the collecting tank 50, and the scraper 60 abuts against the bottom of the metering roller 21 to scrape off residual paint on the surface of the metering roller 21 after the metering roller 21 is coated on the charging roller 22, so as to prevent the surface of the metering roller 21 from being uneven.

Compared with the prior art, the utility model provides the upper feeding three-roller reverse coating device, the feeding assembly is positioned above the three-roller reverse roller coating assembly, under the action of the gravity of the coating, the coating is thrown between the metering roller and the material carrying roller from the upper direction of the three-roller reverse roller coating assembly by the feeding assembly, the coating stored by the feeding assembly can be fully utilized, and the waste of the coating is reduced.

The foregoing is merely a preferred embodiment of the utility model and is not intended to limit the utility model in any manner; those skilled in the art can readily practice the utility model as shown and described in the drawings and detailed description herein; however, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the scope of the utility model as defined by the appended claims; meanwhile, any changes, modifications, and evolutions of the equivalent changes of the above embodiments according to the actual techniques of the present invention are still within the protection scope of the technical solution of the present invention.

Claims (10)

1. An upper feeding three-roller reverse coating device comprises a device body (100), and is characterized in that the device body (100) comprises:

a transfer roller (10) for transferring a metal substrate (200) to be coated;

the three-roller reverse roll coating assembly (20) comprises a metering roller (21), a material carrying roller (22) and a coating roller (23) which are sequentially connected to the rack in a rotating mode along the direction towards the conveying roller (10); the coating roller (23) and the transmission roller (10) are respectively pressed against the upper surface and the lower surface of the metal substrate (200) from two sides;

the feeding assembly (30) comprises a feeding groove (31) and a discharging box (32) which are communicated, and the feeding groove and the discharging box are both positioned above the three-roller reverse roller coating assembly (20); the discharging box (32) is provided with an outlet (321) for guiding the coating to a roller gap between the metering roller (21) and the material-carrying roller (22);

the bottom wall of the feed groove (31) is inclined downwards along the paint flowing direction so as to guide the paint in the feed groove (31) to flow to the discharging box (32).

2. An upper-feed three-roller reverse coating device according to claim 1, characterized in that the outlet (321) is arranged away from the feed chute (31); the bottom of the inner wall of the material outlet box (32) is inclined downwards along the flowing direction.

3. The three-roller upper-feeding reverse coating device according to claim 1, wherein the outlet (321) is arranged at the middle position of the bottom wall of the discharging box (32); the bottom wall of the discharging box (32) is funnel-shaped.

4. An upper-feed three-roller reverse coating device as claimed in claim 1, characterized in that the direction of the paint flow in the outlet box (32) intersects with the direction of the paint flow in the feed channel (31).

5. The upper-feeding three-roller reverse coating device according to claim 4, wherein the feeding groove (31) is provided with a flow guide part (311); the flow guide part (311) inclines towards the direction of the material outlet box (32) so as to guide the coating in the feeding groove (31) to flow to the material outlet box (32).

6. An upper-feed three-roller reverse coating device according to claim 1, characterized in that the discharging box (32) is arranged near the end of the feeding groove (31).

7. The three-roller reverse coating device with upper feeding according to any one of claims 1 to 6, characterized in that the bottom of the discharging box (32) is provided with a diversion duct (322) for guiding the coating to the roller gap between the metering roller (21) and the material carrying roller (22).

8. The three-roller upper-feeding reverse coating device according to any one of claims 1 to 6, wherein the discharging box (32) comprises a box body (323) and a side plate (324); two sides of the side plate (324) are bent towards the box body (323) to form a first joint part (3241) and a second joint part (3242); the first joint part (3241) and the second joint part (3242) are respectively connected to two sides of the box body (323); a space is arranged between the side plate (324) and the box body (323) to form the outlet (321).

9. The three-roller upper-feeding reverse coating device according to claim 8, wherein the bottom of the side plate (324) extends out of the bottom of the box body (323); the first joint part (3241) and the second joint part (3242) are respectively connected to two sides of the box body (323) in a rotating way; the side plate (324) rotates relative to the box body (323), and the inclination angle of the bottom of the side plate (324) is changed, so that the discharging direction of the outlet (321) is adjusted.

10. An upper-feeding three-roller reverse painting device according to any one of claims 1 to 6, characterized in that a plurality of filter plates with filter holes are longitudinally arranged in the feeding groove (31) and/or the discharging box (32).

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