CN219503085U - Coating machine for producing high-flame-retardance PVC coating cloth - Google Patents

Abstract

The utility model relates to the field of coating equipment, and particularly discloses a coating machine for producing high-flame-retardance PVC (polyvinyl chloride) coating cloth, which comprises a frame, a calendaring roller assembly, a first coating roller, a back roller and a second coating roller, wherein the calendaring roller assembly, the first coating roller, the back roller and the second coating roller are sequentially arranged on the frame along the direction of outputting the cloth; the coating machine further comprises a pair of sliding rails and a scraper assembly, wherein the pair of sliding rails extend out of the back roller along the direction deviating from the output material, the scraper assembly comprises a cutter seat slidably connected between the pair of sliding rails and a scraper connected to the cutter seat, and the scraper is configured such that the edge part of the scraper can be abutted against the surface of cloth on the back roller. The utility model has the advantage that the scraping procedure can be realized only by selecting the scraper with the shape of the bottom of the cutting edge matched with the supporting plane.

Description

Coating machine for producing high-flame-retardance PVC coating cloth

Technical Field

The utility model relates to a coating device, in particular to a scraper component which can be configured on the coating device for scraping a coating, and in particular relates to a coating machine for producing high-flame-retardant PVC coating cloth.

Background

The coating cloth is made by taking glass cotton cloth, chemical fiber cloth and the like as base cloth, and coating or adding the required coating material into the base cloth through processes of dipping, padding or coating and the like. Taking a common flame-retardant PVC coating cloth as an example, the flame-retardant coating is generally formed by coating flame-retardant coating glue on the surface of a base cloth, so that the coating glue is finished on the fabric. The water-based coating adhesive has the advantages of yellowing resistance, high temperature resistance, safety, environmental protection and the like, and becomes the preferred coating material of the current flame-retardant coating cloth. However, when the aqueous coating adhesive is coated and finished on the base cloth, the adhesive capability is poor, and the evenness of the surface of the coating of the original base cloth needs to be guaranteed, so that the coated original coating is usually scraped to be flat by a scraper before the base cloth is coated with the flame-retardant adhesive, and the aqueous coating adhesive can be attached to the surface of the cloth better.

The applicant puts forward a Chinese patent of a coating machine in the prior art, the publication number of the Chinese patent is CN206373031U, the publication date is 2017-08-04, and the Chinese patent specifically discloses a coating machine which comprises a frame, a support frame and a scraper arranged on the support frame are arranged on the frame, the lower end of the scraper is arranged in an arc shape parallel to fabrics, a baffle is arranged between the scraper and a cloth guide roller, two ends of the scraper are respectively provided with a baffle, and a coating space is formed between the baffle and the scraper. In order to solve the technical problem of uniformly scraping the surface coating of the cloth, the edge part of the scraper is arranged into an arc shape which is attached to the surface of the cloth, but when the cloth to be processed of different materials is conveyed between the rollers, the surface concave degree of the cloth to be processed is different, so that the scraper with various shapes or specifications needs to be designed and processed in order to match the conditions, so that the requirement of uniformly scraping the coating or the coating on the surface of the cloth is met, and the processing and production cost is increased.

In view of this, there is a need for a coater that can uniformly scrape a coating on a surface of a cloth material without replacing a doctor blade with a plurality of specifications or shaped cutting edges, so that flame retardant glue on a surface of a base cloth can be stably attached, and the prepared coated cloth has good flame retardance.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide a coating machine for producing high-flame-retardant PVC coating cloth, which has the advantages that the scraping procedure can be realized only by selecting a scraper with the shape of the bottom of a cutting edge matched with the supporting plane, thereby saving the production and manufacturing cost.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the coating machine for producing the high-flame-retardance PVC coating cloth comprises a frame, a calendaring roller assembly, a first coating roller, a back roller and a second coating roller, wherein the calendaring roller assembly, the first coating roller, the back roller and the second coating roller are sequentially arranged on the frame along the direction of outputting the cloth, the back roller is fixedly arranged on the frame and is provided with a guide cambered surface for guiding the cloth and a supporting plane connected with the guide cambered surface, and the second coating roller is positioned below the supporting plane; the coating machine further comprises a pair of sliding rails and a scraper assembly, wherein the pair of sliding rails extend out of the back roller along the direction deviating from the output material, the scraper assembly comprises a cutter seat slidably connected between the pair of sliding rails and a scraper connected to the cutter seat, and the scraper is configured such that the edge part of the scraper can be abutted against the surface of cloth on the back roller.

In order to further optimize the technical scheme, the following technical measures are adopted:

preferably, the coater further comprises a fixed plate arranged above the frame, the tool apron comprises a sliding block matched with the sliding rail and a movable connecting rod arranged between the two sliding blocks, the scraper is connected to the lower part of the movable connecting rod, and a cylindrical spring is arranged between the movable connecting rod and the fixed plate on the upper part.

Preferably, the scraper is fixedly arranged on the tool holder.

Preferably, the scraper is rotatably connected to the tool holder through a rotating shaft, and a torsion spring is arranged between the rotating shaft and the tool holder.

Preferably, the blade portion of the scraper is arc-shaped in cross section.

Preferably, the back roller is detachably connected to the frame.

Preferably, the sliding block is further provided with a guide groove extending vertically, and two ends of the movable connecting rod are respectively provided with an installation head matched with the guide groove.

Preferably, the fixing plate is further provided with a lifting device connected with the tool apron to drive the tool apron to move vertically.

Preferably, one end of the sliding rail is provided with a reciprocating motor for driving the sliding block to reciprocate on the sliding rail.

Preferably, a receiving box for collecting the redundant paint is further arranged on the rack.

Due to the adoption of the technical scheme, the utility model has the following beneficial effects:

the coating machine in the utility model realizes that the cloth coated by the first coating roller is guided to the supporting plane by the guiding cambered surface through the first coating roller and the back roller with the guiding cambered surface and the supporting plane, and the scraper component on the matched fixing plate is used for scraping the cloth coating supported on the supporting plane along the direction deviating from the output of the material.

Furthermore, the coating machine controls the sliding block to reciprocate in the scraping direction through the reciprocating motor and controls the scraper component to lift through the lifting device, so that automatic scraping operation on cloth can be realized, and the production efficiency is further improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following brief description of the drawings of the embodiments will make it apparent that the drawings in the following description relate only to some embodiments of the present utility model and are not limiting of the present utility model.

Fig. 1 is a general structural schematic diagram of the first embodiment;

FIG. 2 is a simplified schematic diagram of the coating machine according to the first embodiment with the frame removed;

FIG. 3 is a schematic structural view of a part of the components in the first embodiment;

FIG. 4 is a schematic side view of a part of the components of the first embodiment;

fig. 5 is a schematic cross-sectional view of a back roller in the first embodiment.

Reference numerals:

a frame 1; a calender roll assembly 2; a first applicator roll 3; a back roller 4; a support plane 41; a guide cambered surface 42; a roller journal 43; a positioning block 44; a second coating roller 5; a doctor blade assembly 6; a scraper 61; a tool holder 62; a cylindrical spring 621; a guide groove 622; a mounting head 623; a torsion spring 624; a slider 625; a movable link 626; a slide rail 63; a reciprocating motor 64; a first receiving box 7; a second receiving box 8; a positioning groove 9; a fixing plate 10; lifting device 11.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the present utility model will be described in further detail with reference to the accompanying drawings. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

Unless defined otherwise, technical or scientific terms used in this patent document should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model belongs. The terms "first," "second," and the like in the description and in the claims, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Likewise, the terms "a," "an," or "the" and similar terms do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, is intended to mean that elements or items that are present in front of "comprising" or "comprising" are included in the word "comprising" or "comprising", and equivalents thereof, without excluding other elements or items. "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used merely to denote relative positional relationships, which may be changed accordingly when the absolute position of the object being described is changed, merely to facilitate description of the present utility model and to simplify description, and not to indicate or imply that the apparatus or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model.

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

Embodiment one:

referring to fig. 1 to 2, the present utility model provides a coater for producing a high flame retardant PVC coating cloth, which comprises the following structures: the frame 1 and the calender roll assembly 2, the first coating roll 3, the back roll 4 and the second coating roll 5 sequentially arranged on the frame 1 along the direction of cloth output, namely, the direction of small arrows shown in fig. 2, wherein the calender roll assembly 2 is a pair of mirror rolls, or the combination of a laminating roll and a mirror roll, depending on the process required in the calendering process, and is not limited herein. The second coating roller 5 may be used as a coating roller for coating a water-based flame-retardant coating adhesive, and the first coating roller 3 may be used as a coating roller for coating a waterproof paint, a polyurethane-acrylate anticorrosive paint, etc., which is not limited herein. The back roller 4 is fixedly mounted on the frame 1, wherein "fixedly mounted" means that the position of the back roller 4 in the circumferential direction as well as in the axial direction is fixed, but that the back roller 4 and the frame 1 can be detachably connected, in particular as described in detail below.

In this embodiment, the back roller 4 has a guiding cambered surface 42 for guiding the cloth and a supporting plane 41 connected with the guiding cambered surface 42, and the second coating roller 5 is located below the supporting plane 41. The coater further comprises a pair of slide rails 63 and a doctor blade assembly 6, wherein the pair of slide rails 63 extend out of the back roller 4 in a direction away from the output material, the doctor blade assembly 6 comprises a knife holder 62 slidably connected between the pair of slide rails 63 and a doctor blade 61 connected to the knife holder 62, and the doctor blade 61 is configured such that the blade portion thereof can abut against the surface of the cloth on the back roller 4. Here, take the processing of PVC waterproof fire-retardant coating cloth as an example, the PVC base cloth that is rolled is exported from the calender roll subassembly, will be at PVC base cloth skin coating waterproof coating through first coating roller, be guided to the supporting plane 41 through back roller 4 guide cambered surface 42, scrape the flat processing to waterproof coating through scraper assembly 6 this moment, then pass through second coating roller 5 coating water system fire-retardant coating glue, because PVC cloth surface's waterproof coating is comparatively level at this moment, therefore the adhesion of water system fire-retardant coating glue on this PVC coating is more reliable, stable.

In this embodiment, the coater further includes a fixed plate 10 disposed above the frame 1, the tool holder 62 includes a slider 625 matching with the slide rail 63 and a movable link 626 disposed between the two sliders 625, the doctor 61 is connected to a lower portion of the movable link, and a cylindrical spring 621 is disposed between the movable link and the fixed plate on an upper portion. Here, the slider 625 moves along the slide rail 63, so as to drive the movable link 626 and the scraper 61 to move, thereby performing the scraping process, and the cylindrical spring 621 is a compression spring, which acts to push the scraper 61 downward, so that the blade portion can always keep contact with the supporting plane 41 and the guiding cambered surface 42 until the scraper 61 and the guiding cambered surface 42 are staggered in the moving direction during the moving process of the scraper 61. Preferably, the sliding block 625 is further provided with a guide groove 622 extending vertically, two ends of the movable connecting rod 626 are provided with a mounting head 623 matched with the guide groove 622, and the movable connecting rod 626 can move up and down in the guide groove 622 and is limited to swing or rotate in the circumferential direction, so that the stability of the scraper in scraping is affected.

In this embodiment, the scraper 61 is fixedly disposed on the cutter holder 62. Specifically, the position of the scraper 61 relative to the movable link 626 is kept fixed, and in one embodiment, the scraper 61 may be welded to the movable link 626, or may be fixed to the movable link 626 by a screw fastener, which is not limited herein.

In the present embodiment, the edge portion of the doctor blade 61 is arc-shaped in cross section, and the arc-shaped edge portion is advantageous in reducing local stress generated on the cloth surface by the doctor blade 61 during the doctor blade treatment, preventing damage to the cloth body or the applied coating, but the straight blade type doctor blade used for the doctor blade 61 may be replaced with a common comma doctor blade, a doctor bar, or the like in other embodiments, and is not limited thereto.

Referring to fig. 5, the mounting manner of the back roller 4 is further shown below, and the back roller 4 may be detachably connected to the frame 1. Specifically, two opposite square positioning grooves 9 are formed in the frame 1, positioning blocks 44 are fixedly connected to roller shaft necks 43 at two ends of the back roller 4, and the positioning blocks 44 can be embedded in the corresponding positioning grooves 9, so that the position of the back roller 4 can be fixed relative to the frame 1. Preferably, the roll shaft neck 43 and the positioning block 44 may be fixed by a threaded connection or a fixed key connection, which is not limited in this embodiment.

In order to improve the efficiency of the scraping process, the fixing plate 10 is further provided with a lifting device 11 connected with the tool holder 62 to drive the tool holder 62 to move vertically, wherein the lifting device 11 can be a lifter, an air cylinder or a telescopic rod, etc., when the tool holder 62 needs to be lifted upwards, the lifting device 11 is opened, and the lifting device 11 overcomes the elasticity of the cylindrical spring 621 to lift the tool holder 62 upwards. One end of the sliding rail 63 is provided with a reciprocating motor 64 for driving a sliding block 625 to reciprocate on the sliding rail 63, the sliding rail sliding block can be a combination of a screw sliding rail and a nut sliding block matched with the screw sliding rail, and for the conventional technology, the embodiment will not be repeated.

In this embodiment, a second receiving box 8 is further disposed below the guiding cambered surface 42 of the back roller 4 on the frame 1, and is used for collecting the excessive coating scraped by the scraper 61, and a first receiving box 7 is further disposed below the first coating roller 3 on the frame 1, and is used for collecting the residual coating during coating.

The working principle of this embodiment is as follows:

in this embodiment, the PVC base fabric which is subjected to the calendaring process from the calendaring roller assembly 2 is coated with a first layer of coating material such as water-proof and corrosion-proof through the first coating roller 3, then the fabric is guided onto the supporting plane 41 through the guiding cambered surface 42 of the back roller 4, at this time, under the action of the cylindrical spring 621, the blade part of the scraper 61 contacts with the fabric coating material, and under the dragging of the reciprocating motor, the slider 625 drives the knife holder 62 and the scraper 61 to move along the opposite direction of the output fabric so as to scrape the first layer of coating material on the fabric surface, and during this time, the scraper 61 always keeps contact with the supporting plane 41 and the guiding cambered surface 42 until the scraper 61 discharges the excessive coating material from the guiding cambered surface 42. Then the knife holder 62 and the scraper 61 are lifted under the drive of the lifting device 11, and the knife holder and the scraper 61 return to the initial positions under the drive of the reciprocating motor, so that the next round of scraping treatment is performed.

Embodiment two:

referring to fig. 3 to 4, the present embodiment is basically the same as the first embodiment in that the doctor 61 is rotatably connected to the holder 62 by a rotation shaft, and a torsion spring 624 is provided between the rotation shaft and the holder 62. Specifically, the torsion spring 624 is connected between the above-described rotation shaft and the mounting head 623. So set up, when scraper 61 discharges unnecessary coating from guide cambered surface 42, scraper 61 can be by a small margin the swing an angle under the drive of torsional spring 624, and scraper 61 is from the outside swing of one side towards the arcwall face to can clear up unnecessary coating more thoroughly, prevent the position that coating adhesion scraper 61 was withdrawn.

In summary, in the above embodiment, since the cloth is supported on the supporting plane 41, the dishing phenomenon of the middle portion does not occur, so that the doctor blade 61 having the bottom shape of the cutting edge matched with the supporting plane 41 is only required to be selected to implement the doctoring process, thereby saving the production cost.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present utility model should be included in the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims (10)

1. A coating machine for producing high fire resistance PVC coating cloth, includes the frame and sets gradually calender roll subassembly, first coating roller, backing roll and the second coating roller in the frame along the direction of output cloth, its characterized in that:

the back roller is fixedly arranged on the frame and is provided with a guide cambered surface for guiding cloth and a supporting plane connected with the guide cambered surface, and the second coating roller is positioned below the supporting plane;

the coating machine further comprises a pair of sliding rails and a scraper assembly, wherein the pair of sliding rails extend out of the back roller along the direction deviating from the output material, the scraper assembly comprises a cutter seat slidably connected between the pair of sliding rails and a scraper connected to the cutter seat, and the scraper is configured such that the edge part of the scraper can be abutted against the surface of cloth on the back roller.

2. The coater for producing high-flame-retardant PVC coated cloth according to claim 1, further comprising a fixed plate arranged above the frame, wherein the tool apron comprises a slide block matched with the slide rail and a movable connecting rod arranged between the two slide blocks, the scraper is connected to the lower part of the movable connecting rod, and a cylindrical spring is arranged between the movable connecting rod and the fixed plate at the upper part.

3. The coater for producing a high flame retardant PVC coating according to claim 1 or 2, wherein the doctor blade is fixedly provided on a blade holder.

4. The coater for producing the high-flame-retardant PVC coating cloth according to claim 1 or 2, wherein the doctor blade is rotatably connected to the blade holder via a rotation shaft, and a torsion spring is provided between the rotation shaft and the blade holder.

5. The coater for producing a high flame retardant PVC coating according to claim 1, wherein the blade portion of the doctor blade is arc-shaped in cross section.

6. The coater for producing a high flame retardant PVC coating according to claim 2, wherein the back roll is detachably attached to the frame.

7. The coater for producing the high-flame-retardant PVC coating cloth according to claim 2, wherein the slide block is further provided with a guide groove extending vertically, and both ends of the movable connecting rod are provided with a mounting head matched with the guide groove.

8. The coater for producing the high-flame-retardant PVC coated cloth according to claim 7, wherein the fixing plate is further provided with a lifting device connected with the knife holder to drive the knife holder to move vertically.

9. The coater for producing the high-flame-retardant PVC coated cloth according to claim 2, wherein one end of the slide rail is provided with a reciprocating motor for driving the slide block to reciprocate on the slide rail.

10. The coater for producing the high-flame-retardant PVC coated cloth according to claim 1, wherein a receiving box for collecting the surplus paint is further provided on the frame.