Fabric surface coating apparatus and coating method

Abstract

This invention belongs to the field of fabric processing technology, and relates to a fabric surface coating device and method. It includes a fixed frame, with a mounting plate vertically mounted at the top of the fixed frame. Two sliding rods are horizontally slidable at both ends of the mounting plate via second electric push rods. Limiting components are fixedly mounted at both ends of the two sliding rods on their adjacent sides. Two sliding frames are horizontally slidable inside the mounting plate, each abutting and limiting the limiting components. A scraper is vertically slidably inserted through each sliding frame via a third spring. Two locking components are slidably mounted at both ends of the mounting plate, each abutting and limiting the sliding frame. The advantage is that when the two sliding frames are moved by the sliding rods, one scraper is pressed by the inclined surface of the through-hole and moved to the top of the fabric to smooth the coating, allowing continuous coating work throughout the assembly and disassembly process without requiring machine downtime.

Description

Technical Field

[0001] This invention belongs to the field of fabric processing technology, and relates to a fabric surface coating device and coating method. Background Technology

[0002] Fabric coating refers to a processing technology that involves uniformly coating a layer of a polymer material (such as PU, PA, PVC, etc.) with film-forming ability onto the surface of a fabric through a specific process. After curing, a continuous thin film is formed on the fabric surface, thereby giving the fabric special functions such as waterproof, windproof, moisture-permeable, flame retardant, light-blocking, and UV-resistant properties.

[0003] Chinese Patent CN223642168U discloses a uniform coating and scraping device for automotive interior fabrics, comprising a base and a frame. A feed roller and a discharge roller are connected to the frame, and a fabric body is movably connected between the feed roller and the discharge roller. A blade holder is movably connected to the frame. A scraper is inserted into the lower end of the blade holder. Multiple fixing bolts connect the scraper and the blade holder. The lower end of the blade holder has a slot matching the scraper, allowing for easy installation by first inserting the scraper and then fixing it with the fixing bolts.

[0004] The scraping device requires the operation of fixing bolts to disassemble and assemble the scraper, which requires stopping the machine during the disassembly and assembly process, making continuous coating operations impossible and affecting production efficiency.

[0005] To address the aforementioned problems, this invention proposes a surface coating apparatus and a coating method for fabrics. Summary of the Invention

[0006] To address the problems existing in the background art, the present invention proposes a surface coating device for fabrics and a coating method thereof.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a surface coating device for fabric, including a fixed frame, a coating cylinder fixedly disposed on the fixed frame, and a conveying mechanism disposed on the fixed frame;

[0008] The top of the fixed frame is equipped with a mounting plate that is lifted and lowered. Both ends of the mounting plate are equipped with sliding rods that slide horizontally via a second electric push rod. Limiting components are fixedly installed at both ends of the two sliding rods on the side that are close to each other.

[0009] The mounting plate has two sliding frames that slide horizontally inside. Both sliding frames are in contact with and limited by a limiting member. Each sliding frame has a scraper that slides vertically through it via a third spring.

[0010] Two snap-fit ​​components are slidably disposed at both ends of the mounting plate, and each snap-fit ​​component is engaged with the sliding frame for limiting and positioning.

[0011] Furthermore, the fixing frame is U-shaped, the coating cylinder is fixedly connected between the two sides of the fixing frame, the top of the coating cylinder is fixedly connected to the feed hopper, and the bottom of the coating cylinder is provided with a number of discharge holes spaced apart.

[0012] Furthermore, the conveying mechanism includes several conveying rollers, each of which is rotatably connected between two sides of the fixed frame. The several conveying rollers are arranged in two groups, with the several conveying rollers in each group located on the same horizontal plane. The several conveying rollers in the two groups are respectively located at the two ends of the fixed frame.

[0013] The first group of several conveyor rollers is located at the top of the fixed frame, the second group of several conveyor rollers is located at the bottom of the fixed frame, and the coating cylinder is located above one of the conveyor rollers in the middle of the second group.

[0014] In the first group, a conveyor roller located at the end and near the middle of the fixed frame corresponds vertically to a conveyor roller located at the end and near the middle of the fixed frame in the second group. A conveyor roller is also rotatably arranged between the two vertically corresponding conveyor rollers.

[0015] Furthermore, an inverted U-shaped mounting bracket is fixedly connected to the top of the fixed frame at a conveyor roller located in the middle of the first group, and the mounting plate is vertically slidably disposed between the two sides of the mounting bracket;

[0016] Two first electric push rods are symmetrically fixedly installed in the middle of the mounting frame, and the mounting plate is fixedly connected to the bottom of the telescopic ends of the two first electric push rods.

[0017] Furthermore, the bottom surface of the mounting plate is provided with a clearance groove, the top surface of the clearance groove is provided with a through hole, the top end of the through hole extends to the top surface of the mounting plate, and the two end faces of the clearance groove are provided with second sliding grooves, and the sliding rod is horizontally slidably disposed in the corresponding second sliding groove.

[0018] The second electric push rod is fixedly installed inside the mounting plate at the end of the second slide groove, and the slide rod is fixedly connected to the end of the telescopic end of the second electric push rod.

[0019] Furthermore, each of the two end faces of the relief groove is provided with a first sliding groove, one end of which extends to the side of the mounting plate. The two ends of the sliding frame are respectively horizontally slidably connected in the two first sliding grooves, and the middle part of the sliding frame is slidably disposed in the relief groove.

[0020] Furthermore, the limiting component includes a push plate and a limiting plate. The push plate is located at one end near the second electric push rod. Both the push plate and the limiting plate are horizontally slidably disposed in the first slide groove. Two sliding frames located in the same first slide groove are positioned between the corresponding push plate and the limiting plate.

[0021] Furthermore, the two snap-fit ​​components are a first elastic snap-fit ​​block and a second elastic snap-fit ​​block, and vertical grooves are provided at both ends of the top surface of the clearance groove. The first elastic snap-fit ​​block is vertically slidably disposed in the corresponding vertical groove. The bottom surface of the first elastic snap-fit ​​block is an inclined surface, which gradually slopes away from the second electric push rod from top to bottom.

[0022] A transverse groove is provided on the side of each of the two slide rods that are close to each other. The second elastic block is horizontally slidably disposed in the corresponding transverse groove. The side of the two second elastic blocks that are close to each other is an inclined surface. The inclined surface slopes from the side close to the second electric push rod to the side of the middle of the sliding frame.

[0023] Furthermore, the sliding frame has a third sliding groove at both ends through which the scraper passes, and a limit block is fixedly connected to both ends of the scraper. The limit block is vertically slidably connected in the corresponding third sliding groove.

[0024] Each of the third slide grooves is provided with a third spring, the top end of the third spring is fixedly connected to the bottom surface of the limiting block, and the bottom end of the third spring is fixedly connected to the bottom surface of the third slide groove.

[0025] Each scraper has a beveled surface on the side away from the second electric push rod at its top, and the bottom end of the through hole has a beveled surface on the side away from the second electric push rod. The beveled surface of the through hole abuts against and slides with the beveled surface of the scraper.

[0026] A method for surface coating of a fabric, using a fabric surface coating apparatus as described above, includes the following steps:

[0027] S1. Lay the fabric on the conveyor roller, add the coating material from the feed hopper into the coating cylinder, and let the coating material fall onto the fabric through the discharge hole;

[0028] S2. Adjust the height of the scraper for coating; start the first electric push rod, which drives the mounting plate, sliding frame and scraper to move downward until the bottom of one scraper away from the second electric push rod moves to the top of the fabric, so that the scraper can evenly scrape the coating on the fabric. At this time, the other scraper is located above the fabric.

[0029] S3. When disassembling a scraper away from the second electric push rod, start the second electric push rod. The second electric push rod pushes the slide rod, push plate, second elastic block, two sliding frames, and scraper to move away from the second electric push rod. A scraper close to the second electric push rod will be squeezed by the inclined surface of the through hole and move to the top of the fabric to perform the coating smoothing work until a sliding frame away from the second electric push rod is moved out of the first slide groove. Then the sliding frame and the scraper on it can be removed.

[0030] S4. When a sliding bracket near the second electric push rod moves, it first presses the inclined surface of the first elastic block, causing the first elastic block to move upward. Then, the sliding bracket slides on the bottom surface of the first elastic block. After the sliding bracket passes the first elastic block, the first elastic block moves downward to block the sliding bracket. Therefore, when the second electric push rod pulls the sliding rod to reset, the sliding bracket moves to one side of the first elastic block and stops moving. The second elastic block is pressed by the sliding bracket and slides past the sliding bracket until the limiting plate abuts against one side of the sliding bracket to fix the sliding bracket. Throughout the replacement process, the scraper can continuously perform the scraping work.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. The surface coating device for this fabric is equipped with a slide bar, which drives two sliding frames to move. One of the scrapers is pressed by the inclined surface of the through hole and moves to the top of the fabric to scrape the coating evenly until the other sliding frame and its scraper are removed from the first slide groove. This allows the coating work to continue throughout the entire assembly and disassembly process without stopping the machine, thus improving work efficiency.

[0033] 2. The surface coating device for the fabric is equipped with a first elastic block and a limiting plate. When the sliding rod is moved to disassemble a scraper that is away from the second electric push rod, the other sliding frame will slide past the first elastic block, so that the first elastic block limits the sliding frame. When the sliding rod is reset, the limiting plate and the first elastic block cooperate to fix the automatic sliding frame, which has a high degree of automation. Attached Figure Description

[0034] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0035] Figure 2 This is a schematic diagram of the internal structure of the fixing frame in this invention;

[0036] Figure 3 This is a schematic diagram of the mounting plate in this invention;

[0037] Figure 4 yes Figure 3 Enlarged structural diagram at point A;

[0038] Figure 5 This is a schematic diagram of the sliding frame in this invention;

[0039] Figure 6 yes Figure 5 Enlarged structural diagram at point B;

[0040] Figure 7 This is a schematic diagram of the scraper structure in this invention.

[0041] In the diagram: 1. Fixed frame; 2. Conveyor roller; 3. Coating cylinder; 4. Fabric; 5. Mounting frame; 6. First electric push rod; 7. Mounting plate; 71. Clearance groove; 8. Through hole; 9. First slide groove; 10. Sliding frame; 11. Scraper; 12. Limiting block; 13. Third spring; 14. Second slide groove; 15. Sliding rod; 16. Limiting plate; 17. Push plate; 18. Second electric push rod; 19. First elastic locking block; 20. Second elastic locking block; 21. Third slide groove. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] like Figures 1-7 As shown, the technical solution adopted by the present invention is as follows: a surface coating device for fabric, including a fixing frame 1, on which a coating cylinder 3 is fixedly disposed.

[0044] The mounting bracket 1 is U-shaped, and the coating cylinder 3 is fixedly connected between the two sides of the mounting bracket 1. A feed hopper is fixedly connected to the top of the coating cylinder 3, and several discharge holes are spaced apart at the bottom of the coating cylinder 3. The feed hopper is used to add coating material into the coating cylinder 3, and the coating material falls evenly through the multiple discharge holes, so that the coating cylinder 3 can perform coating.

[0045] A conveying mechanism is provided on the fixed frame 1.

[0046] The conveying mechanism includes several conveying rollers 2, each of which is rotatably connected between two sides of the fixed frame 1. The conveying rollers 2 are parallel to the coating cylinder 3. The several conveying rollers 2 are arranged in two groups, with the several conveying rollers 2 in each group located on the same horizontal plane. The several conveying rollers 2 in the two groups are located at the two ends of the fixed frame 1, respectively. The several conveying rollers 2 in the same group are rotatably connected to the fixed frame 1 at intervals.

[0047] The first group of several conveyor rollers 2 are located at the top of the fixed frame 1, and the second group of several conveyor rollers 2 are located at the bottom of the fixed frame 1. The coating cylinder 3 is located above one of the conveyor rollers 2 in the middle of the second group. The fabric 4 passes through the bottom of the coating cylinder 3 and the top of the several conveyor rollers 2 in the second group.

[0048] In the first group, a conveyor roller 2 located at the end and near the middle of the fixed frame 1 corresponds vertically to a conveyor roller 2 located at the end and near the middle of the fixed frame 1 in the second group. A conveyor roller 2 is also rotatably arranged between the two vertically corresponding conveyor rollers 2. The fabric 4 is wound around a conveyor roller 2 between the two groups, thereby smoothly conveying the fabric 4.

[0049] The top of the fixed frame 1 is equipped with a lifting mounting plate 7, and both ends of the mounting plate 7 are equipped with sliding rods 15 that slide horizontally via a second electric push rod 18.

[0050] The top of the fixed frame 1 is fixedly connected to an inverted U-shaped mounting frame 5 at the middle of a conveyor roller 2 in the first group. The mounting plate 7 is vertically slidably disposed between the two sides of the mounting frame 5. The side of the mounting plate 7 slides and engages with the inner side wall of the fixed frame 1 to position the mounting plate 7.

[0051] Two first electric push rods 6 are symmetrically fixedly installed in the middle of the mounting bracket 5, and the mounting plate 7 is fixedly connected to the bottom of the telescopic ends of the two first electric push rods 6. The two first electric push rods 6 work together to drive the mounting plate 7 to move up and down. The control ends of the two first electric push rods 6 are electrically connected to the same synchronous controller, which drives the two first electric push rods 6 to telescopically extend and retract synchronously, thereby driving the mounting plate 7 to rise and fall smoothly.

[0052] The bottom surface of the mounting plate 7 has a clearance groove 71, and the top surface of the clearance groove 71 has a through hole 8. The top end of the through hole 8 extends to the top surface of the mounting plate 7, and the width of the through hole 8 is smaller than the width of the clearance groove 71. The clearance groove 71 extends to the side surface of the mounting plate 7. Each end face of the clearance groove 71 has a second sliding groove 14, and a sliding rod 15 is horizontally slidably disposed within the corresponding second sliding groove 14. The second sliding groove 14 also extends to the side surface of the mounting plate 7, allowing the sliding rod 15 to be moved out of the mounting plate 7.

[0053] The second electric push rod 18 is fixedly installed inside the mounting plate 7 at the end of the second slide groove 14, and the slide rod 15 is fixedly connected to the end of the telescopic end of the second electric push rod 18. The control ends of the two second electric push rods 18 are also electrically connected to the same synchronous controller, so that the two slide rods 15 move synchronously.

[0054] The mounting plate 7 has two sliding brackets 10 inside for horizontal sliding.

[0055] The two end faces of the clearance groove 71 are provided with first sliding grooves 9, one end of which extends to the side of the mounting plate 7. The two ends of the sliding frame 10 are horizontally slidably connected to the two first sliding grooves 9 respectively, and the middle part of the sliding frame 10 is slidably disposed in the clearance groove 71, so that the two sliding frames 10 slide between the two sliding rods 15.

[0056] Limiting components are fixedly installed at both ends of the two sliding rods 15 on the side that are close to each other, and the two sliding frames 10 are in contact with the limiting components for limiting and positioning.

[0057] The limiting components include a push plate 17 and a limiting plate 16. The push plate 17 is located at one end near the second electric push rod 18. Both the push plate 17 and the limiting plate 16 are horizontally slidably disposed within the first slide groove 9. Two sliding frames 10 located within the same first slide groove 9 are positioned between the corresponding push plate 17 and the limiting plate 16. The push plate 17 and the limiting plate 16 cooperate to limit the sliding frame 10, so that both the push plate 17 and the limiting plate 16 can push the sliding frame 10 to move.

[0058] Two snap-fit ​​pieces are slidably provided at both ends of the mounting plate 7, and each snap-fit ​​piece is engaged with the sliding frame 10 for limiting and positioning.

[0059] The two locking components are a first elastic locking block 19 and a second elastic locking block 20. Vertical grooves are provided at both ends of the top surface of the clearance groove 71, and the first elastic locking block 19 is vertically slidably disposed within the corresponding vertical groove. The bottom surface of the first elastic locking block 19 is an inclined surface, which gradually slopes away from the second electric push rod 18 from top to bottom.

[0060] The first elastic locking block 19 includes a first spring and a first locking block. The first spring is fixedly connected to the top surface of the first locking block, and the other end of the first spring is fixedly connected to the top surface of the vertical groove. An inclined surface is provided on the bottom surface of the first locking block, and the top end of the first locking block is vertically slidably connected within the vertical groove. In the initial state, the first spring pushes the first locking block downward, causing the inclined surface of the first locking block to extend below the vertical groove.

[0061] A transverse groove is provided on the side of each of the two sliding rods 15 that are close to each other, and the second elastic locking block 20 is horizontally slidably disposed in the corresponding transverse groove. The side of the two second elastic locking blocks 20 that are close to each other is an inclined surface, which slopes from the side near the second electric push rod 18 to the side of the middle of the sliding frame 10.

[0062] The second elastic locking block 20 includes a second spring and a second locking block. One end of the second spring is fixedly connected to one side of the second locking block, and the other end of the second spring is fixedly connected to the end face of the transverse groove. An inclined surface is provided on the side of the second locking block away from the second spring, and the side of the second locking block connected to the second spring is horizontally limited and slidably connected within the transverse groove. In the initial state, the second spring pushes the second locking block, causing the inclined surface of the second locking block to extend outside the transverse groove.

[0063] Each sliding frame 10 has a scraper 11 that slides vertically through it via a third spring 13.

[0064] The sliding frame 10 has a third sliding groove 21 at both ends where the scraper 11 passes through. A limiting block 12 is fixedly connected to each end of the scraper 11, and the limiting block 12 is vertically slidably connected within the corresponding third sliding groove 21. The vertical movement of the scraper 11 is limited by the cooperation between the limiting block 12 and the third sliding groove 21.

[0065] Each third slide groove 21 is provided with a third spring 13. The top end of the third spring 13 is fixedly connected to the bottom surface of the limiting block 12, and the bottom end of the third spring 13 is fixedly connected to the bottom surface of the third slide groove 21. In the initial state, the third spring 13 pushes the limiting block 12 upward, so that the limiting block 12 abuts against the top end of the third slide groove 21.

[0066] Each scraper 11 has a beveled surface on the side away from the second electric push rod 18 at its top. The bottom end of the through hole 8 on the side away from the second electric push rod 18 also has a beveled surface. The beveled surface of the through hole 8 abuts against and slides against the beveled surface of the scraper 11. The two beveled surfaces cooperate to push the scraper 11 downwards. The size of the through hole 8 is adapted to the sliding frame 10 to facilitate the installation of the sliding frame 10 from the through hole 8 into the first sliding groove 9 and the clearance groove 71.

[0067] A method for surface coating of a fabric, using the fabric surface coating apparatus described above, includes the following steps:

[0068] S1. Lay the fabric 4 on the conveyor roller 2, add the coating material from the feed hopper into the coating cylinder 3, and let the coating material fall onto the fabric 4 through the discharge hole.

[0069] S2. Adjust the height of the scraper 11 for coating; activate the first electric push rod 6, which drives the mounting plate 7, sliding frame 10, and scraper 11 downwards until the bottom end of one scraper 11, away from the second electric push rod 18, moves to the top of the fabric, allowing the scraper 11 to evenly smooth the coating on the fabric 4. At this time, the other scraper 11 is located above the fabric 4, meaning that the scraper 11 does not smooth the coating.

[0070] S3. When disassembling a scraper 11 away from the second electric push rod 18, the second electric push rod 18 is activated. The second electric push rod 18 pushes the slide rod 15, push plate 17, second elastic block 20, two sliding frames 10, and scraper 11 to move away from the second electric push rod 18. The scraper 11 closer to the second electric push rod 18 is squeezed by the inclined surface of the through hole 8 and moves to the top of the fabric 4 to perform the coating smoothing work. Until the sliding frame 10 away from the second electric push rod 18 is moved out of the first slide groove 9, the sliding frame 10 and the scraper 11 on it can be removed.

[0071] S4. When a sliding frame 10 near the second electric push rod 18 moves, it first presses the inclined surface of the first elastic block 19, causing the first elastic block 19 to move upward. Then, the sliding frame 10 slides on the bottom surface of the first elastic block 19. After the sliding frame 10 passes the first elastic block 19, the first elastic block 19 moves downward to block the sliding frame 10. Therefore, when the second electric push rod 18 pulls the slide rod 15 to reset, the sliding frame 10 moves to one side of the first elastic block 19 and stops moving. The second elastic block 20 is pressed by the sliding frame 10 and slides past the sliding frame 10 until the limiting plate 16 abuts against one side of the sliding frame 10 to fix the sliding frame 10. Throughout the replacement process, the scraper 11 can continuously perform the scraping work.

[0072] Working principle:

[0073] In use, the fabric 4 is moved so that it passes over the top of several conveyor rollers 2 at the coating cylinder 3 and then over the bottom of the coating cylinder 3. The fabric 4 then passes over one conveyor roller 2 between two sets of conveyor rollers 2, and finally passes under the mounting plate 7, moving over the top of several conveyor rollers 2 at the mounting plate 7. After passing the conveyor rollers 2, the fabric 4 is wound onto a take-up roller, and the rotation of the take-up roller pulls the fabric 4 along.

[0074] Start the first electric push rod 6. The telescopic end of the first electric push rod 6 pushes the mounting plate 7 downward. The mounting plate 7 drives the two sliding frames 10 and the scraper 11 to move downward.

[0075] For ease of description, the scraper 11 closest to the second electric push rod 18 is named the first scraper 11, and the other scraper 11 is named the second scraper 11. The scraper 11 is moved to the top of the fabric 4, at which point the bottom of the first scraper 11 is at a distance from the fabric 4, and the top of the first scraper 11 is located inside the through hole 8.

[0076] The coating material is fed into the coating cylinder 3 through the feed hopper and then falls onto the fabric 4 through the discharge hole. As the fabric 4 moves, the second scraper 11 smooths the coating material on the fabric 4, thus completing the coating process on the fabric surface.

[0077] When the second scraper 11 needs to be replaced, the second electric push rod 18 is activated. The telescopic end of the second electric push rod 18 pushes the slide rod 15 to slide in the second slide groove 14, so that the limiting plate 16 moves to the outside of the second slide groove 14.

[0078] The push plate 17 will push the sliding frame 10 at the first scraper 11 to move, and the second elastic block 20 will push the sliding frame 10 at the second scraper 11 to move, so that the two sliding frames 10 slide in the first slide groove 9, and the sliding frame 10 at the second scraper 11 slides out of the first slide groove 9.

[0079] When the second scraper 11 moves, the inclined surface at the bottom of the through hole 8 will press against the inclined surface of the second scraper 11, causing the second scraper 11 to slide downward within the sliding frame 10. At the same time, the limiting block 12 slides downward within the third slide groove 21 and compresses the third spring 13.

[0080] The top of the second scraper 11 moves to the top surface of the clearance groove 71, so that the bottom of the second scraper 11 moves to the top of the fabric 4 to smooth the paint. At this time, the two scrapers 11 smooth the paint at the same time. Then, the sliding bracket 10 at the second scraper 11 is moved to the outside of the mounting plate 7, so that the sliding bracket 10 can be removed, thereby removing the second scraper 11 for disassembly.

[0081] Then continue moving the slide bar 15. At this point, only one sliding bracket 10 remains on the slide bar 15, that is, the sliding bracket 10 that is close to the second electric push rod 18.

[0082] When the sliding frame 10 slides to the bottom end of the first elastic block 19, it will press the inclined surface of the first elastic block 19, thereby pushing the first elastic block 19 to slide upward. Then the sliding frame 10 slides on the bottom surface of the first elastic block 19.

[0083] When the sliding frame 10 passes the first elastic block 19, the first elastic block 19 moves downward to reset. At this time, the side of the bottom end of the first elastic block 19 blocks the sliding frame 10, while the push plate 17 is still located on one side of the sliding frame 10.

[0084] The second electric push rod 18 pulls the slide rod 15 to move closer to the second electric push rod 18, the push plate 17 moves away from the sliding frame 10, and the limiting plate 16 moves closer to the sliding frame 10.

[0085] At the same time, the slide bar 15 drives the second elastic block 20 to move. Since the second elastic block 20 is located on the side of the sliding frame 10 away from the second electric push rod 18 at this time, when the second elastic block 20 moves to the sliding frame 10, the sliding frame 10 will squeeze the second elastic block 20, causing the second elastic block 20 to retract into the transverse groove.

[0086] The slide bar 15 drives the second elastic block 20 to slide at the end of the sliding frame 10. When the second elastic block 20 passes the sliding frame 10, after the limiting plate 16 moves to one side of the sliding frame 10, the sliding frame 10 no longer presses the inclined surface of the second elastic block 20 out of the transverse groove, causing the second elastic block 20 to block the sliding frame 10. This positions the sliding frame 10 between the first elastic block 19 and the limiting plate 16, completing the replacement of the scraper 11. Throughout the replacement process, the scraper 11 continuously performs the scraping operation.

[0087] Then, the sliding frame 10 is added back into the relief groove 71 through the through hole 8, so that the scraper 11 on the sliding frame 10 is in a standby state.

[0088] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A surface coating apparatus for a fabric, characterised in that, Includes a fixed frame (1), on which a coating cylinder (3) is fixedly mounted, and on which a conveying mechanism is mounted; The top of the fixed frame (1) is provided with a mounting plate (7) that is lifted and lowered. Both ends of the mounting plate (7) are provided with sliding rods (15) that slide horizontally through the second electric push rod (18). Limiting parts are fixedly provided at both ends of the two sliding rods (15) on the side that are close to each other. The mounting plate (7) has two sliding frames (10) that slide horizontally inside. Both sliding frames (10) are in contact with and limited by the limiting member. Each sliding frame (10) has a scraper (11) that slides vertically through it via a third spring (13). Two snap-fit ​​pieces are slidably provided at both ends of the mounting plate (7), and each snap-fit ​​piece abuts and limits the sliding frame (10).

2. The surface coating apparatus for a fabric according to claim 1, wherein: The fixing frame (1) is U-shaped, and the coating cylinder (3) is fixedly connected between the two sides of the fixing frame (1). The top of the coating cylinder (3) is fixedly connected to the feed hopper, and the bottom of the coating cylinder (3) is provided with several discharge holes spaced apart.

3. The surface coating apparatus for a fabric according to claim 2, wherein: The conveying mechanism includes several conveying rollers (2), each conveying roller (2) is rotatably connected between two sides of the fixed frame (1), the several conveying rollers (2) are arranged in two groups, the several conveying rollers (2) in each group are on the same horizontal plane, and the several conveying rollers (2) in the two groups are respectively located at the two ends of the fixed frame (1); The first group of several conveying rollers (2) are located at the top of the fixed frame (1), the second group of several conveying rollers (2) are located at the bottom of the fixed frame (1), and the coating cylinder (3) is located above one of the conveying rollers (2) in the middle of the second group. In the first group, a conveyor roller (2) located at the end and near the middle of the fixed frame (1) corresponds vertically to a conveyor roller (2) located at the end and near the middle of the fixed frame (1) in the second group. A conveyor roller (2) is also rotatably arranged between the two vertically corresponding conveyor rollers (2).

4. The surface coating apparatus for a fabric according to claim 3, wherein: The top of the fixed frame (1) is fixedly connected to an inverted U-shaped mounting frame (5) at a conveyor roller (2) in the middle of the first group, and the mounting plate (7) is vertically slidably disposed between the two sides of the mounting frame (5); Two first electric push rods (6) are symmetrically fixedly installed in the middle of the mounting bracket (5), and the mounting plate (7) is fixedly connected to the bottom of the telescopic ends of the two first electric push rods (6).

5. The surface coating apparatus for a fabric according to claim 1, wherein: The bottom surface of the mounting plate (7) is provided with a relief groove (71), the top surface of the relief groove (71) is provided with a through hole (8), the top end of the through hole (8) extends to the top surface of the mounting plate (7), and the two end faces of the relief groove (71) are provided with a second sliding groove (14), and the sliding rod (15) is horizontally slidably disposed in the corresponding second sliding groove (14). The second electric push rod (18) is fixedly installed in the mounting plate (7) at the end of the second slide groove (14), and the slide rod (15) is fixedly connected to the end of the telescopic end of the second electric push rod (18).

6. The fabric surface coating apparatus according to claim 5, characterized in that: The two end faces of the relief groove (71) are provided with first sliding grooves (9). One end of the first sliding groove (9) extends to the side of the mounting plate (7). The two ends of the sliding frame (10) are respectively horizontally slidably connected in the two first sliding grooves (9). The middle part of the sliding frame (10) is slidably set in the relief groove (71).

7. The fabric surface coating apparatus according to claim 6, characterized in that: The limiting component includes a push plate (17) and a limiting plate (16). The push plate (17) is located at one end close to the second electric push rod (18). The push plate (17) and the limiting plate (16) are both horizontally slidably disposed in the first slide groove (9). Two sliding frames (10) located in the same first slide groove (9) are positioned between the corresponding push plate (17) and the limiting plate (16).

8. The fabric surface coating apparatus according to claim 5, characterized in that: The two snap-fit ​​components are a first elastic snap-fit ​​block (19) and a second elastic snap-fit ​​block (20). The two ends of the top surface of the clearance groove (71) are provided with vertical grooves. The first elastic snap-fit ​​block (19) is vertically slidably disposed in the corresponding vertical groove. The bottom surface of the first elastic snap-fit ​​block (19) is an inclined surface, which gradually slopes from top to bottom away from the second electric push rod (18). A transverse groove is provided on the side of the two slide rods (15) that are close to each other. The second elastic block (20) is horizontally slidably disposed in the corresponding transverse groove. The side of the two second elastic blocks (20) that are close to each other is an inclined surface. The inclined surface is inclined from the side close to the second electric push rod (18) to the other side towards the middle of the sliding frame (10).

9. The fabric surface coating apparatus according to claim 5, characterized in that: The sliding frame (10) has a third sliding groove (21) at both ends of the scraper (11). The two ends of the scraper (11) are fixedly connected to a limit block (12), and the limit block (12) is vertically slidably connected in the corresponding third sliding groove (21). Each of the third slide grooves (21) is provided with a third spring (13), the top end of the third spring (13) is fixedly connected to the bottom surface of the limiting block (12), and the bottom end of the third spring (13) is fixedly connected to the bottom surface of the third slide groove (21). Each scraper (11) has a bevel on the side away from the second electric push rod (18) at its top. The bottom end of the through hole (8) away from the second electric push rod (18) has a bevel. The bevel of the through hole (8) abuts against and slides with the bevel of the scraper (11).

10. A method for surface coating of a fabric, characterized in that: Using the fabric surface coating apparatus as described in any one of claims 1-9, the steps include: S1. Lay the fabric (4) on the conveying roller (2), add the coating from the feed hopper into the coating cylinder (3), and let the coating fall onto the fabric (4) through the discharge hole; S2. Adjust the height of the scraper (11) for coating; start the first electric push rod (6), the first electric push rod (6) drives the mounting plate (7), sliding frame (10) and scraper (11) to move downward until the bottom end of one scraper (11) away from the second electric push rod (18) moves to the top of the fabric, so that the scraper (11) can evenly scrape the coating on the fabric (4), at which time the other scraper (11) is located above the fabric (4); S3. When disassembling a scraper (11) away from the second electric push rod (18), start the second electric push rod (18). The second electric push rod (18) pushes the slide rod (15), push plate (17), second elastic block (20), two sliding frames (10), and scraper (11) to move away from the second electric push rod (18). A scraper (11) close to the second electric push rod (18) will be squeezed by the inclined surface of the through hole (8) and move to the top of the fabric (4) to perform the coating smoothing work until a sliding frame (10) away from the second electric push rod (18) is moved out to the outside of the first slide groove (9). Then the sliding frame (10) and the scraper (11) on it can be moved out. S4. When a sliding frame (10) near the second electric push rod (18) moves, it will first squeeze the inclined surface of the first elastic block (19) to make the first elastic block (19) move upward. Then the sliding frame (10) slides on the bottom surface of the first elastic block (19). After the sliding frame (10) passes the first elastic block (19), the first elastic block (19) moves downward to block the sliding frame (10). Therefore, when the second electric push rod (18) pulls the slide rod (15) to reset, the sliding frame (10) moves to one side of the first elastic block (19) and stops moving. The second elastic block (20) is squeezed by the sliding frame (10) and slides past the sliding frame (10) until the limiting plate (16) abuts against one side of the sliding frame (10) to fix the sliding frame (10). During the entire replacement process, the scraper (11) can continue to perform the scraping work.

Images