A waterproof coating mechanism for a warp-knitted fabric

Abstract

This invention discloses a waterproof coating mechanism for warp-knitted fabric, comprising a frame on which a conveyor belt for transporting warp-knitted fabric is driven and mounted. A spray frame is fixed on the frame, and the spray frame includes outer baffles on both sides, with an upper baffle fixed between the two outer baffles. A rotatable inner spraying shaft is installed inside the upper baffle, and spraying units are arrayed on the outer wall of the inner spraying shaft. A control frame is also provided at the upper end of the inner spraying shaft, which is used to squeeze the spraying units and clean the spray nozzles of the spraying units. In this invention, when the spraying unit is in the lower half, it sprays the waterproof material downwards; when it rotates to the upper half, it sprays gas outwards. When the spraying unit rotates to the upper half, it is also squeezed by an arc-shaped rod. As the gas moves outwards along the nozzle orifice, it is blocked by two sliders, blowing away impurities around the nozzle orifice, preventing a slowdown in spraying speed, and avoiding interference with the nozzle or the direction of coating spraying.

Description

Technical Field

[0001] This invention relates to the field of material coating technology, specifically to a waterproof coating mechanism for warp-knitted fabric. Background Technology

[0002] Warp-knitted fabric is a base fabric woven from materials such as polyester and polyamide. While this base fabric may possess a certain level of strength and stability, its waterproof performance may not be outstanding. Therefore, to enhance its waterproof properties, a waterproof coating is typically applied. The main function of the waterproof coating is to form a continuous waterproof layer on the surface of the warp-knitted fabric, effectively blocking the penetration of water and moisture. After being applied, the waterproof coating forms a dense waterproof layer that effectively prevents the intrusion of water and moisture, protecting the internal structure and contents from damage. Warp-knitted fabric treated with waterproof coating exhibits significantly improved durability and service life. The waterproof layer also resists external environmental erosion, such as rain and snow, thereby extending the lifespan of the warp-knitted fabric.

[0003] Compared to other brushing methods, spraying for warp-knitted fabrics can significantly improve construction efficiency and shorten the construction period. Spraying ensures a uniform and continuous coating of waterproofing material on the fabric surface, thus enhancing the waterproofing effect. Spraying is suitable for warp-knitted fabrics of various shapes and sizes, and is particularly advantageous for large-area, complex-shaped fabrics. However, during the spraying process, lint and dust are easily generated and can adhere to the spraying equipment, potentially clogging the nozzles or affecting the direction of paint spraying, leading to slower spraying speed and reduced efficiency. Therefore, regular cleaning of the spraying equipment nozzles is necessary to prevent damage to the nozzles or the direction of paint spraying. Summary of the Invention

[0004] The purpose of this invention is to provide a waterproof coating mechanism for warp-knitted fabrics to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a warp-knitted fabric waterproof coating mechanism, comprising a frame, a conveyor belt for transporting warp-knitted fabric is driven and installed on the frame, a spray frame is fixed on the frame, the spray frame includes two outer baffles on both sides, an upper baffle is fixed between the two outer baffles, a rotatable inner spraying shaft is installed inside the upper baffle, spraying units are arrayed on the outer wall of the inner spraying shaft, and a control frame is also provided at the upper end of the inner spraying shaft, the control frame is used to squeeze the spraying units and clean the spray nozzles of the spraying units.

[0006] Furthermore, the inner spraying shaft is rotatably mounted between the outer baffles on both sides, and a motor is fixed to the outer side of one of the outer baffles. Both the output end of the motor and the inner spraying shaft are fixed with drive gears, and the two drive gears mesh with each other.

[0007] Furthermore, the control frame includes a crossbar and multiple arranged arc-shaped rods. The multiple arc-shaped rods are all fixed on the crossbar. The axes of the multiple arc-shaped rods coincide with the axis of the inner spraying shaft. The lower end of the arc-shaped rods has an opening. The two ends of the crossbar are respectively fixed to the outer baffles on both sides.

[0008] Furthermore, the spraying unit includes a nozzle fixed to the outside of the inner spraying shaft, an outer sleeve fixedly sleeved to the outside of the nozzle, a telescopic sleeve sleeved inside the outer sleeve, and a support spring fixed to the end of the telescopic sleeve located inside the outer sleeve.

[0009] The telescopic sleeve is through-hole for nozzle spraying, and the side of the telescopic sleeve is also through-hole for cleaning impurities. The telescopic sleeve has two sliders inside, which can open and close to block the nozzle. When the telescopic sleeve is rotating, it is pressed against the arc-shaped rod, causing the two sliders to merge.

[0010] Furthermore, the telescopic sleeve has an installation port on its outer side, and a push rod is hinged to the installation port and the outer side of the slider. The push rod is used to push the slider together so that the two sliders are joined together. The part of the push rod located at the installation port has a torsion spring for reset.

[0011] Furthermore, a fixing strip is fixed to the outside of the nozzle, and the slider is slidably disposed outside the fixing strip. There is a gap between the slider and the nozzle. When the two sliders are combined, the gas moving outward from the nozzle is blocked by the slider, thus achieving outward dispersion.

[0012] Furthermore, the contact position between the fixing bar and the slider is smoothly configured.

[0013] Furthermore, symmetrically arranged limiting blocks are fixed to the outer edge of the telescopic sleeve. The limiting blocks are used to limit the arc-shaped rod so that the arc-shaped rod is clamped between the limiting blocks on both sides.

[0014] Furthermore, there is a horizontal plate inside the inner spraying shaft. The horizontal plate is horizontally arranged and coincides with the axis of the inner spraying shaft. Arc-shaped edges are fixed on both sides of the horizontal plate and fit against the inner spraying shaft. Extension shafts are fixed at both ends of the horizontal plate. The horizontal plate, arc-shaped edges and extension shafts divide the inner spraying shaft into two sealed upper and lower parts.

[0015] A planar layer is provided on the outer side of both sides of the extension shaft. The planar layers of the two sides of the extension shaft are respectively arranged vertically. The upper and lower parts of the inner spraying shaft are connected to the outer ends through the planar layers. An outer sheet metal is fixed on the outer side of the extension shaft. The outer sheet metal has a through hole that communicates with the planar layer. The outer sheet metal is fixed to the outer baffle.

[0016] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0017] 1. When the rotating spray unit is in the lower half, it sprays the waterproof material downwards. When it rotates to the upper half, it sprays gas outwards. When the spray unit rotates to the upper half, it is also squeezed by the arc rod. When the gas moves outwards along the nozzle, it is blocked by two sliders, which blow away the impurities around the nozzle, so as to avoid slowing down the spraying speed and avoid affecting the nozzle or the direction of paint spraying.

[0018] 2. The fixed strip is set up for two reasons: firstly, it facilitates the sliding of the slider along the fixed strip; secondly, it creates a gap between the slider and the nozzle for the gas to move outward. Generally, impurities also adhere to the edge of the nozzle orifice, and can be blown away outward to avoid affecting the spraying of the nozzle orifice.

[0019] 3. The horizontal plate has curved edges on both sides to prevent the upper and lower sides of the inner spraying shaft from being connected simultaneously under the action of the spraying unit. The curved edges act as a barrier, increasing the squeezing effect with the inner wall of the inner spraying shaft and preventing leakage on the upper and lower sides of the inner spraying shaft. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the internal spraying shaft structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the internal structure of the outer baffle on one side of the present invention;

[0024] Figure 4 This is a schematic diagram of the cooperation structure between the control frame and the spray unit of the present invention;

[0025] Figure 5 This is a schematic diagram of the spray unit structure of the present invention;

[0026] Figure 6 This is an exploded structural diagram of the spray unit of the present invention;

[0027] Figure 7This is a partial cross-sectional structural diagram of the spray unit of the present invention;

[0028] Figure 8 This is a schematic diagram of the half-section structure of the inner spraying shaft of the present invention;

[0029] Figure 9 This is a schematic diagram of the horizontal plate and the arc-shaped edge end face structure of the present invention.

[0030] In the diagram: 1. Frame; 2. Conveyor belt; 3. Sprayer frame; 31. Outer baffle; 32. Upper baffle; 33. Inner spraying shaft; 331. Horizontal plate; 332. Arc edge; 333. Extension shaft; 334. Flat layer; 335. Outer sheet metal; 336. Through hole; 34. Control frame; 341. Crossbar; 342. Arc rod; 343. Limiting block; 35. Spraying unit; 351. Nozzle; 352. Outer sleeve; 353. Telescopic sleeve; 354. Support spring; 355. Mounting port; 356. Fixing strip; 357. Slider; 358. Push rod; 359. Torsion spring; 36. Drive gear. Detailed Implementation

[0031] 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.

[0032] Please see Figures 1-9 This invention provides a technical solution: to address the problem that lint and dust adhering to spraying equipment may clog the nozzles 351 or affect the direction of paint spraying, leading to slower spraying speed and reduced spraying efficiency, a warp-knitted waterproof coating application mechanism is proposed, such as... Figure 1 The entire assembly shown includes a frame 1, on which a conveyor belt 2 for transporting warp-knitted fabric is mounted. The warp-knitted fabric is transported on the conveyor belt 2. A spray frame 3 is fixed to the frame 1. The warp-knitted fabric, during transport, passes through the lower end of the spray frame 3, where a waterproof coating is applied to the fabric, giving it a waterproof effect. Since the thickness of the waterproof coating is limited in a single spray, multiple spraying processes can be performed. Figure 2 The partial cross-section of the spray frame 3 shown illustrates that the spray frame 3 includes two outer baffles 31 on both sides, with an upper baffle 32 fixed between the two outer baffles 31. A rotatable inner spraying shaft 33 is installed inside the upper baffle 32. Spraying units 35 are arrayed on the outer wall of the inner spraying shaft 33. The inner spraying shaft 33 is located at the lower end of the upper baffle 32. The lower end of the inner spraying shaft 33 is used to spray the warp-knitted fabric, while the remaining positions are blocked to prevent the waterproof coating from moving in different directions and affecting the environment. Figure 2The control frame 34 shown has a control frame 34 at the upper end of the inner spraying shaft 33. The control frame 34 is used to squeeze the spraying unit 35 and clean the spray nozzle of the spraying unit 35.

[0033] like Figure 3 The inner spraying shaft 33 needs to be driven to rotate, so that different spraying units 35 are squeezed against the control frame 34 to clean the different spraying units 35. The inner spraying shaft 33 is rotatably installed between the outer baffles 31 on both sides. A motor is fixed on the outer side of one side of the outer baffle 31. A drive gear 36 is fixed on the output end of the motor and the inner spraying shaft 33. The two drive gears 36 mesh with each other, and the inner spraying shaft 33 can achieve rotation opposite to the warp-knitted fabric transmission direction, so that the spraying on the warp-knitted fabric is more uniform.

[0034] like Figure 4 The structure of the control frame 34 shown includes a crossbar 341 and multiple arc-shaped rods 342 arranged in a row. The multiple arc-shaped rods 342 are all fixed on the crossbar 341. The axes of the multiple arc-shaped rods 342 coincide with the axis of the inner spraying shaft 33. The lower end of the arc-shaped rods 342 has an opening. The two ends of the crossbar 341 are fixed to the outer baffles 31 on both sides respectively. When the inner spraying shaft 33 rotates, the spraying unit 35 is squeezed against the arc-shaped rods 342. After rotating to the lower end, it can spray again, and this process is repeated continuously.

[0035] like Figure 5 , Figure 6 and Figure 7 The structure of the spray unit 35 shown is as follows. Figure 5 and Figure 6 The entire spray unit 35, Figure 6 The telescopic sleeve is half-sectioned at 353. Figure 7 For the outer sleeve 352 to cooperate with the telescopic sleeve 353, the spray unit 35 includes a nozzle 351 fixed on the outside of the inner spray shaft 33. The outer sleeve 352 is fixedly sleeved on the outside of the nozzle 351. The telescopic sleeve 353 is sleeved inside the outer sleeve 352. A support spring 354 is fixed at the end of the telescopic sleeve 353 located inside the outer sleeve 352. Under the squeezing action of the spray unit 35 and the arc rod 342, the support spring 354 is compressed, and the telescopic sleeve 353 contracts inward along the outer sleeve 352, changing the position of the telescopic sleeve 353.

[0036] The telescopic sleeve 353 is through-hole for spraying from the nozzle 351. The spray can pass through the telescopic sleeve 353 along the nozzle 351. The side of the telescopic sleeve 353 is also through-hole for cleaning impurities. When the telescopic sleeve 353 retracts, the two sliders 357 block the nozzle 351. The gas moving out of the nozzle 351 will move outward along the surface of the sliders 357 to clean the area around the nozzle 351. The telescopic sleeve 353 has two sliders 357 inside. The two sliders 357 can open and close to block the nozzle 351. The rotating telescopic sleeve 353 is pressed by the arc rod 342, causing the two sliders 357 to merge.

[0037] like Figure 6 and Figure 7 As shown, the telescopic sleeve 353 has an installation port 355 on its outer side. A push rod 358 is hinged to the installation port 355 and the outer side of the slider 357. The push rod 358 is used to push the slider 357 together. The part of the push rod 358 located in the installation port 355 has a torsion spring 359 for reset. The telescopic sleeve 353 expands and contracts inward and outward, changing the inclination of the push rod 358, so that the two sliders 357 move closer or further apart, thereby blocking or opening the nozzle 351.

[0038] like Figure 6 As shown, a fixing strip 356 is fixed to the outside of the nozzle 351, and a slider 357 is slidably disposed outside the fixing strip 356. There is a gap between the slider 357 and the nozzle 351. When the two sliders 357 are combined, the gas moving outward from the nozzle 351 is blocked by the slider 357, realizing outward dispersion. The gas is blown outward to blow away impurities on the nozzle 351.

[0039] The contact points of the fixing strip 356 and the slider 357 are designed to be smooth, so as to achieve smooth sliding and avoid jamming.

[0040] like Figure 6 As shown, symmetrically arranged limiting blocks 343 are fixed on the outer edge of the telescopic sleeve 353. The limiting blocks 343 are used to limit the arc-shaped rod 342, so that the arc-shaped rod 342 is clamped between the limiting blocks 343 on both sides to avoid misalignment. The telescopic sleeve 353 is squeezed under the squeezing action of the arc-shaped rod 342.

[0041] like Figure 8 and Figure 9As shown, there is a horizontal plate 331 inside the inner spraying shaft 33. The horizontal plate 331 is horizontally set and coincides with the axis of the inner spraying shaft 33. Arc-shaped edges 332 are fixed on both sides of the horizontal plate 331. The arc-shaped edges 332 are in contact with the inner spraying shaft 33. Extension shafts 333 are fixed at both ends of the horizontal plate 331. The horizontal plate 331, arc-shaped edges 332 and extension shafts 333 divide the inner spraying shaft 33 into two sealed parts, the upper and lower parts of the inner spraying shaft 33, which are respectively gas and waterproof coating.

[0042] A planar layer 334 is provided on the outer side of both sides of the extension shaft 333. The planar layers 334 of the two sides of the extension shaft 333 are respectively arranged vertically. The upper and lower parts of the inner spraying shaft 33 are connected to the outer ends of both ends through the planar layers 334. An outer sheet metal 335 is fixed on the outer side of the extension shaft 333. The outer sheet metal 335 has a through hole 336 that communicates with the planar layers 334. The outer sheet metal 335 is fixed to the outer baffle 31. During the rotation of the inner spraying shaft 33, the upper and lower sealed parts remain stationary and are always located on the upper and lower sides. In addition, gas and waterproof coating can be introduced into the upper and lower sealed parts of the inner spraying shaft 33 from both ends of the inner spraying shaft 33 to realize the spraying and self-cleaning of the spraying unit 35.

[0043] The working principle of this invention is as follows: Under the action of the motor, the inner spraying shaft 33 is driven to rotate. The outer end of the inner spraying shaft 33 is connected to a pipe that conveys waterproof coating inward. Then, under the action of pressure, it moves out from the spraying unit 35 and sprays the warp-knitted fabric to achieve the function of waterproofing the warp-knitted fabric.

[0044] During the rotation of the inner spraying shaft 33, the horizontal plate 331 remains stationary. The upper half of the inner spraying shaft 33 contains gas introduced from one end, and the lower half contains waterproof coating introduced from the other end. This results in the upper layer of the horizontal plate 331 containing gas and the lower layer containing waterproof material. When the rotating spraying unit 35 is in the lower half, it sprays the waterproof material downwards. When it rotates to the upper half, it sprays gas outwards. When the spraying unit 35 rotates to the upper half, it also compresses the arc-shaped rod 342, causing the two sliders 357 of the spraying unit 35 to move closer together and block the nozzle 351. As the gas moves outwards along the nozzle 351, it is blocked by the two sliders 357, thus dispersing the gas along the sliders 357 and blowing away impurities around the nozzle 351. This prevents the spraying speed from slowing down and avoids affecting the nozzle 351 or the direction of coating spraying.

[0045] During the above process, the spray unit 35 rotates and is squeezed by the arc rod 342, which squeezes the telescopic sleeve 353 into the outer ring 352, increases the inclination of the push rod 358, and makes the two sliders 357 come closer to each other and block the nozzle 351. When it separates from the arc rod 342, the telescopic sleeve 353 returns to its original position under the action of the support spring 354, and the push rod 358 returns to its original position under the action of the torsion spring 359, opening the nozzle 351 and realizing the spraying effect.

[0046] The fixing strip 356 is provided for two purposes: firstly, to facilitate the sliding of the slider 357 along the fixing strip 356; and secondly, to create a gap between the slider 357 and the nozzle 351 for outward gas movement. When the slider 357 blocks the outward extension surface of the nozzle 351, the gap between the slider 357 and the nozzle 351 allows the gas to move outward. Since impurities usually adhere to the edge of the nozzle 351, they can be blown away outward to avoid affecting the spraying of the nozzle 351.

[0047] When the inner spraying shaft 33 rotates, the two sides of the horizontal plate 331 are curved edges 332, such as Figure 9 As shown, to prevent the upper and lower sides of the inner spraying shaft 33 from being connected simultaneously under the action of the spraying unit 35, the arc-shaped edge 332 acts as a blockage and also increases the squeezing effect with the inner wall of the inner spraying shaft 33, thus preventing leakage on the upper and lower sides of the inner spraying shaft 33. The two ends of the extension shaft 333 are outer sheet metal 335, which limits the horizontal plate 331 to prevent it from rotating with the inner spraying shaft 33, thus keeping the upper and lower layers of the inner spraying shaft 33 stationary.

[0048] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0049] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. 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 waterproof coating mechanism for warp-knitted fabric, comprising a frame (1), wherein a conveyor belt (2) for conveying warp-knitted fabric is driven and mounted on the frame (1), characterized in that: A spray frame (3) is fixed on the frame (1). The spray frame (3) includes two outer baffles (31) on both sides. An upper baffle (32) is fixed between the two outer baffles (31). A rotatable inner spraying shaft (33) is installed inside the upper baffle (32). Spraying units (35) are arrayed on the outer wall of the inner spraying shaft (33). A control frame (34) is also provided at the upper end of the inner spraying shaft (33). The control frame (34) is used to squeeze the spraying units (35) and clean the spray nozzles of the spraying units (35). The control frame (34) includes a crossbar (341) and multiple arc-shaped bars (342) arranged in a row. The multiple arc-shaped bars (342) are all fixed on the crossbar (341). The axes of the multiple arc-shaped bars (342) coincide with the axis of the inner spraying shaft (33). The lower end of the arc-shaped bars (342) has an opening. The two ends of the crossbar (341) are respectively fixed to the outer baffles (31) on both sides. The spray unit (35) includes a nozzle (351) fixed on the outside of the inner spray shaft (33), an outer sleeve (352) fixedly sleeved on the outside of the nozzle (351), a telescopic sleeve (353) sleeved inside the outer sleeve (352), and a support spring (354) fixed at the end of the telescopic sleeve (353) located inside the outer sleeve (352). The telescopic sleeve (353) is through-hole on the outside for spraying by the nozzle (351). The side of the telescopic sleeve (353) is also through-hole for cleaning impurities. The telescopic sleeve (353) has two sliders (357) inside. The two sliders (357) can open and close to block the nozzle (351). The rotating telescopic sleeve (353) is pressed by the arc rod (342) to make the two sliders (357) merge. A fixing strip (356) is fixed to the outside of the nozzle (351), and the slider (357) is slidably disposed on the outside of the fixing strip (356). There is a gap between the slider (357) and the nozzle (351). When the two sliders (357) are combined, the gas moving outward from the nozzle (351) is blocked by the slider (357), thus achieving outward dispersion. The inner spraying shaft (33) has a horizontal plate (331) inside. The horizontal plate (331) is horizontally arranged and coincides with the axis of the inner spraying shaft (33). Both sides of the horizontal plate (331) are fixed with arc-shaped edges (332). The arc-shaped edges (332) are in contact with the inner spraying shaft (33). Both ends of the horizontal plate (331) are fixed with extension shafts (333). The horizontal plate (331), arc-shaped edges (332) and extension shafts (333) divide the inner spraying shaft (33) into two sealed upper and lower parts. A planar layer (334) is provided on the outer side of the extension shaft (333) on both sides. The planar layers (334) of the extension shaft (333) on both sides are arranged vertically. The upper and lower parts of the inner spraying shaft (33) are connected to the outer ends through the planar layers (334). An outer sheet metal (335) is fixed on the outer side of the extension shaft (333). A through hole (336) communicating with the planar layer (334) is provided on the outer sheet metal (335). The outer sheet metal (335) is fixed to the outer baffle (31).

2. The waterproof coating application mechanism for warp-knitted fabric according to claim 1, characterized in that: The inner spraying shaft (33) is rotatably mounted between the outer baffles (31) on both sides. A motor is fixed on the outer side of one of the outer baffles (31). A drive gear (36) is fixed on the output end of the motor and the inner spraying shaft (33). The two drive gears (36) mesh with each other.

3. The waterproof coating application mechanism for warp-knitted fabric according to claim 2, characterized in that: The telescopic sleeve (353) has an installation port (355) on its outer side. A push rod (358) is hinged inside the installation port (355) and outside the slider (357). The push rod (358) is used to push the slider (357) together so that the two sliders (357) are joined together. The part of the push rod (358) located in the installation port (355) has a torsion spring (359) for reset.

4. The waterproof coating application mechanism for warp-knitted fabric according to claim 3, characterized in that: The contact positions of the fixing bar (356) and the slider (357) are smoothly configured.

5. The waterproof coating application mechanism for warp-knitted fabric according to claim 4, characterized in that: The telescopic sleeve (353) has symmetrically arranged limiting blocks (343) fixed on its outer edge. The limiting blocks (343) are used to limit the arc rod (342) so that the arc rod (342) is clamped between the limiting blocks (343) on both sides.

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