Rolling extrusion water removing device for screen printing sheet cleaning line

Abstract

The application relates to a rolling extrusion water removing device for a silk screen material cleaning line, characterized by comprising a rack, a conveying belt arranged on the rack and having a plurality of conveying rollers arranged at intervals along the same axis, a water removing device arranged on the rack and comprising a plurality of groups of water absorbing rollers arranged in a one-to-one corresponding staggered mode with the conveying rollers, each group of water absorbing rollers comprising upper rollers and lower rollers arranged at intervals, the upper rollers and the lower rollers being wrapped with wood pulp sponges along the circumferences, a spraying device arranged on the rack and above the groups of water absorbing rollers, the wood pulp sponges in the water absorbing rollers being sprayed to be softened, and a switching transmission structure arranged on the rack and transmissionally connected between the adjacent upper rollers and lower rollers, the upper rollers and the lower rollers being driven to displace relative to the rack respectively so that the upper rollers and the lower rollers are arranged vertically in an up-down mode or horizontally in a same horizontal plane.

Description

Technical Field

[0001] This invention specifically relates to a rolling extrusion dewatering device for a screen printing sheet cleaning line. Background Technology

[0002] In screen printing, sheets (such as metal plates, plastic substrates, or glass) need to be cleaned after printing to remove ink residue and impurities. The cleaned sheet surface will have a large amount of moisture or solvent adhering to it. If this is not thoroughly removed, it will lead to prolonged drying time, increased energy consumption, and may even cause oxidation, corrosion, or uneven coating due to liquid residue.

[0003] Currently, common water absorption technologies in the industry have the following drawbacks: traditional water absorption materials are inefficient, and existing technologies mostly use ordinary synthetic sponges, lint-free cloths, or compressed air blowing. Among them, synthetic sponges have limited water absorption capacity and are prone to shedding lint, and residual fibers may contaminate precision printed surfaces; lint-free cloths need to be replaced frequently, which is costly; compressed air blowing is energy-intensive and poses safety hazards in the handling of volatile solvents.

[0004] To address the above problems, there is an urgent need for a water removal solution that combines high absorbency and adaptability. Summary of the Invention

[0005] The present invention aims to at least partially solve one of the problems existing in the prior art. To this end, the present invention proposes a rolling extrusion dewatering device for screen printing sheet cleaning line.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A rolling extrusion dewatering device for a screen printing sheet cleaning line includes: frame; A conveyor belt, which is mounted on a frame, has a number of conveyor rollers spaced apart along the same axis; The dewatering device is mounted on a frame and includes several sets of water-absorbing rollers. The sets of water-absorbing rollers and several conveying rollers are arranged in a one-to-one staggered manner. Each set of water-absorbing rollers includes an upper roller and a lower roller arranged at intervals. Both the upper roller and the lower roller are covered with wood pulp sponge along their circumference. A spraying device is installed on the frame and located above several sets of water-absorbing rollers to spray the wood pulp sponge in the water-absorbing rollers, thereby softening the wood pulp sponge. The switching transmission structure is set on the frame and connected to the adjacent upper and lower rollers, so as to drive the upper and lower rollers to move relative to the frame so that they are arranged vertically or horizontally aligned on the same horizontal plane.

[0007] In one embodiment, the switching transmission structure includes a rack and a transmission component, and a first transverse guide groove and a vertical guide groove respectively disposed on both sides of the frame. One end of the first transverse guide groove is connected to the upper end of the vertical guide groove. The upper roller is movably disposed in the first transverse guide groove, and the lower roller is movably disposed in the vertical guide groove. A second transverse guide groove passes through the transmission component, and the lower roller is movably disposed in the second transverse guide groove. The transmission component is hinged to one end of the upper roller. A toothed ring is disposed on one side of the transmission component and co-centered with the upper roller. The rack is disposed on the frame, and the toothed ring can move and mesh with the rack as the transmission component moves, so that the transmission component can rotate upward with the central axis of the upper roller as the center when it moves.

[0008] In one embodiment, a cylinder is provided on the frame, a transverse guide rail is provided on one side of the frame, a movable frame is movably provided on the transverse guide rail via a slider, the drive shaft of the cylinder is connected to the movable frame, and a plurality of first connecting rods are provided on the movable frame, each of the first connecting rods being hinged to the end of the upper roller.

[0009] In one embodiment, the spraying device includes a water tank mounted on a frame, the water tank being connected to a plurality of spray pipes, the plurality of spray pipes being arranged in a one-to-one correspondence with a plurality of water-absorbing rollers, and the length direction of the spray pipes being parallel to the length direction of the water-absorbing rollers, and a plurality of nozzles being spaced apart along the length direction of the spray pipes.

[0010] In one embodiment, a first cover is provided on the frame, and a drain pipe is connected to the lower side of the first cover. The spraying device and the water-absorbing roller are respectively disposed inside the first cover.

[0011] In one embodiment, a plurality of second covers are rotatably disposed inside the first cover, and the plurality of second covers are respectively arranged in a one-to-one correspondence with a plurality of spray pipes. The second covers can rotate to cover the spray pipes, and the second covers are provided with a transmission component that can be driven to rotate by displacement of a moving frame.

[0012] In one embodiment, the transmission component includes a second connecting rod, and the two ends of the second cover are respectively provided with rotating shafts. The rotating shafts are rotatably mounted on the first cover via bearings. The second connecting rod is connected to the rotating shafts, and a movable groove is passed through the second connecting rod along its length. A plurality of third connecting rods are provided at intervals on the movable frame, and the plurality of third connecting rods are respectively provided in one-to-one correspondence with the plurality of second connecting rods. A fixed shaft is provided on one side of the third connecting rod, and the fixed shaft is movably disposed in the movable groove.

[0013] In one embodiment, a recycling bin is provided on the frame below the drain pipe, and the recycling bin is connected to the water tank and a circulation pump via a water pipe.

[0014] This invention utilizes wood pulp sponge, whose porous structure allows for rapid liquid absorption, and its softness conforms to the microstructure of sheet surfaces, reducing residue. It is also environmentally friendly: the raw material is derived from renewable forest resources, is biodegradable, and meets clean production requirements. Furthermore, it is cost-effective: the wood pulp sponge is reusable, the production process is mature, and its long-term cost is lower than consumables such as cleanroom wipes. Furthermore, due to the material properties of wood pulp sponge, it has a high initial hardness (Shore hardness ≥15HA) when dry, and its hardness changes gradually during water absorption (Shore hardness ≥10HA after water absorption). This can maintain sufficient contact pressure to ensure efficient water absorption, and the wood pulp sponge can maintain sufficient contact pressure to adhere to the conveyed screen printing sheet for efficient water absorption. Furthermore, by combining the switching transmission structure and the spraying device, the spraying device sprays the upper and lower rollers, causing the wood pulp sponge in both to pre-soften. At the same time, the switching transmission structure drives the upper and lower rollers to move. When the upper and lower rollers are in the same horizontal and even distribution state, the spraying device can spray the upper and lower rollers synchronously and evenly, so that the pre-softening degree of the wood pulp sponge in the upper and lower rollers is kept to be approximately the same. This avoids the problem that the wood pulp sponge in the upper roller softens and absorbs water more than the wood pulp sponge in the lower roller due to the upper and lower rollers being arranged vertically for spraying, which would cause a large difference in the water absorption rate of the upper and lower sides of the screen-printed sheet. Then, by switching the transmission structure, the upper and lower rollers are moved, so that the pre-softened rollers are arranged vertically, and the screen printing sheet is moved between the upper and lower rollers with the conveyor belt, and the upper and lower sides of the screen printing sheet are simultaneously absorbed. Attached Figure Description

[0015] Figure 1 This is a front view of a rolling extrusion dewatering device for a screen printing sheet cleaning line according to the present invention; Figure 2 This is one of the partial structural schematic diagrams of a rolling extrusion dewatering device for a screen printing sheet cleaning line in this invention; Figure 3 This is one of the cross-sectional structural schematic diagrams of a rolling extrusion dewatering device for a screen printing sheet cleaning line in this invention; Figure 4 This is a second schematic cross-sectional view of a rolling extrusion dewatering device for a screen printing sheet cleaning line in this invention. Figure 5 This is a second partial structural schematic diagram of a rolling extrusion dewatering device for a screen printing sheet cleaning line in this invention; Figure 6 This is a partial structural schematic diagram of a rolling extrusion dewatering device for a screen printing sheet cleaning line in this invention; Figure 7This is a three-dimensional structural diagram of the transmission component in this invention. Detailed Implementation

[0016] The following detailed description provides various embodiments or examples for carrying out the present invention. Of course, these are merely embodiments or examples and are not intended to be limiting. Additionally, repeated reference numerals, such as repeated numbers and / or letters, may be used in different embodiments. These repetitions are for the purpose of simple and clear description of the invention and do not represent a specific relationship between the different embodiments and / or structures discussed.

[0017] like Figures 1-7 The illustrated screen printing sheet cleaning line rolling extrusion dewatering device includes: a frame 1; a conveyor belt 2, which is mounted on the frame 1 and has a plurality of conveying rollers 3 arranged at intervals along the same axis; a dewatering device, which is mounted on the frame 1 and includes a plurality of sets of water-absorbing rollers, which are arranged in a one-to-one correspondence with the plurality of conveying rollers 3, each set of water-absorbing rollers including an upper roller 4 and a lower roller 5 arranged at intervals, both the upper roller 4 and the lower roller 5 being covered with wood pulp sponge along their circumference; a spraying device 6, which is mounted on the frame 1 and located above the plurality of sets of water-absorbing rollers, for spraying the wood pulp sponge in the water-absorbing rollers to soften the wood pulp sponge; and a switching transmission structure 7, which is mounted on the frame 1 and connected to adjacent upper rollers 4 and lower rollers 5, for driving the upper rollers 4 and lower rollers 5 to move relative to the frame 1 so that they are arranged vertically upwards and downwards or horizontally aligned on the same horizontal plane.

[0018] Specifically, by using wood pulp sponges, the porous structure of the wood pulp sponges can quickly absorb liquids, and their softness can conform to the microstructure of the sheet surface, reducing residues; environmentally friendly: the raw materials are derived from renewable forest resources, are biodegradable, and meet clean production requirements; cost-controllable: wood pulp sponges are reusable and the production process is mature, and the long-term cost is lower than consumables such as cleanroom wipes. Furthermore, due to the material properties of wood pulp sponge, it has a high initial hardness (Shore hardness ≥15HA) when dry, and its hardness changes gradually during water absorption (Shore hardness ≥10HA after water absorption). This can maintain sufficient contact pressure to ensure efficient water absorption, and the wood pulp sponge can maintain sufficient contact pressure to adhere to the conveyed screen printing sheet for efficient water absorption. Furthermore, by combining the switching transmission structure and the spraying device, the spraying device sprays the upper and lower rollers, causing the wood pulp sponge in both to pre-soften. At the same time, the switching transmission structure drives the upper and lower rollers to move. When the upper and lower rollers are in the same horizontal and even distribution state, the spraying device can spray the upper and lower rollers synchronously and evenly, so that the pre-softening degree of the wood pulp sponge in the upper and lower rollers is kept to be approximately the same. This avoids the problem that the wood pulp sponge in the upper roller softens and absorbs water more than the wood pulp sponge in the lower roller due to the upper and lower rollers being arranged vertically for spraying, which would cause a large difference in the water absorption rate of the upper and lower sides of the screen-printed sheet. Then, by switching the transmission structure, the upper and lower rollers are moved, so that the pre-softened rollers are arranged vertically, and the screen printing sheet is moved between the upper and lower rollers with the conveyor belt, and the upper and lower sides of the screen printing sheet are simultaneously absorbed.

[0019] Furthermore, the switching transmission structure 7 includes a rack 71 and a transmission component 72, as well as a first transverse guide groove 73 and a vertical guide groove 74 respectively disposed on both sides of the frame 1. One end of the first transverse guide groove 73 is connected to the upper end of the vertical guide groove 74. The upper roller 4 is movably disposed in the first transverse guide groove 73, and the lower roller 5 is movably disposed in the vertical guide groove 74. A second transverse guide groove 75 passes through the transmission component 72, and the lower roller 5 is movably disposed in the second transverse guide groove 75. The transmission component 72 is hinged to one end of the upper roller 4. A toothed ring 80 is disposed on one side of the transmission component 72 and co-centered with the upper roller 4. The rack 71 is disposed on the frame 1, and the toothed ring 80 can move and mesh with the rack 71 as the transmission component 72 moves, so that the transmission component 72 can rotate upward with the central axis of the upper roller 4 as the center when it moves.

[0020] Because the upper ends of the first transverse guide groove and the vertical guide groove are connected, when the lower roller moves along the vertical guide groove to the upper end of the vertical guide groove, the lower roller and the upper roller located in the first transverse guide groove are arranged in the same horizontal plane. Conversely, when the upper roller moves along the first transverse guide groove to the upper end of the vertical guide groove, the upper roller and the lower roller located in the vertical guide groove are arranged vertically.

[0021] Specifically, initially, the upper and lower rollers are arranged vertically, one above the other. The upper roller is driven to move along the first transverse guide groove, which in turn drives the transmission component to move. At this time, the displacement of the transmission component causes the second transverse guide groove of the transmission component to move laterally relative to the lower roller. When the displacement of the transmission component causes the toothed ring and rack located on it to mesh, the transmission component moves upward with the center axis of the upper roller. The second transverse guide groove of the transmission component then flips upward and lifts the lower roller, causing the lower roller to move upward along the vertical guide groove until the upper and lower rollers are arranged at the same level. This achieves the switching of the displacement position of the upper and lower rollers. The second transverse guide groove allows the upper roller to make way before driving the lower roller upward, achieving the sequential displacement of the upper and lower rollers. This avoids the problem of mutual friction and wear of the wood pulp sponge when it is in a dry and hard state due to interference during the displacement of the upper and lower rollers.

[0022] Furthermore, a cylinder 76 is provided on the frame 1, and a transverse guide rail 77 is provided on one side of the frame 1. A movable frame 78 is movably mounted on the transverse guide rail 77 via a slider. The drive shaft of the cylinder 76 is connected to the movable frame 78, and the movable frame 78 is provided with a plurality of first connecting rods 79, which are hinged one-to-one to the end of the upper roller 4. Thus, the cylinder drives the movable frame to move along the transverse guide rail, and the first connecting rods drive the upper roller to move along the first transverse guide groove.

[0023] Furthermore, the spraying device 6 includes a water tank 61 mounted on the frame 1. The water tank 61 is connected to a plurality of spray pipes 62, which are arranged one-to-one with a plurality of sets of water-absorbing rollers. The length direction of the spray pipes 62 is parallel to the length direction of the water-absorbing rollers. A plurality of nozzles 63 are spaced apart along the length direction of the spray pipes 62. Specifically, a diversion pipe is connected between the plurality of spray pipes and the water tank. A water pump is installed on the diversion pipe. The water pump causes the clean water in the water tank to be sprayed through the diversion pipe, the spray pipes, and the nozzles onto the wood pulp sponge in the upper and lower rollers.

[0024] Furthermore, a first cover 64 is provided on the frame 1, and a drain pipe 65 is connected to the lower side of the first cover 64. The spraying device 6 and the water-absorbing roller are respectively disposed inside the first cover 64. Thus, the first cover effectively prevents the overflow of clean water.

[0025] Furthermore, a plurality of second covers 66 are rotatably disposed within the first cover 64, and the plurality of second covers 66 are respectively and correspondingly disposed with a plurality of spray pipes 62. The second covers 66 can rotate to cover the spray pipes 62. The second covers 66 are provided with a transmission component 8 that can be driven to rotate by the displacement of the moving frame 78. Specifically, in the initial state, the second covers cover the spray pipes, and at this time, the upper roller and the lower roller are connected in a vertically arranged vertically. When the moving frame is driven to move and move the upper roller, the transmission component can simultaneously drive the second covers to rotate. Thus, when the upper roller and the lower roller are moved to the same horizontal level, the second covers are in the open state. When the spray pre-softening upper roller and the lower roller are reset to a vertically arranged vertically, the second covers close simultaneously. The second covers effectively prevent the problem of water dripping and leakage from the nozzles, and prevent water dripping and leakage from the nozzles when the upper roller and the lower roller are absorbing water, which would affect the water blowing efficiency and quality.

[0026] Furthermore, the transmission component 8 includes a second connecting rod 81. The second cover 66 has rotating shafts (not shown) at both ends. These rotating shafts (not shown) are rotatably mounted on the first cover 64 via bearings. The second connecting rod 81 is connected to the rotating shafts, and a movable groove 83 extends through the second connecting rod 81 along its length. The movable frame 78 has several third connecting rods 84 spaced apart, each corresponding to one of the second connecting rods 81. A fixed shaft (not shown) is provided on one side of each third connecting rod 84, and this fixed shaft (not shown) is movably mounted within the movable groove 83. When the movable frame is driven to move, the fixed shaft of the third connecting rod moves accordingly and presses against the inner side of the movable groove of the second connecting rod. The fixed shaft moves along the movable groove, causing the second connecting rod to rotate circumferentially around the rotating shaft, thereby synchronously driving the second cover to flip open or close relative to the spray pipe.

[0027] Furthermore, a recycling tank 86 is installed on the frame 1 below the drain pipe 65. The recycling tank 86 is connected to the water tank 61 via a water pipe (not shown in the figure) and a circulation pump (not shown in the figure). Clean water is then collected in the recycling tank via the drain pipe and can be circulated back to the water tank for use by the circulation pump.

[0028] Based on the accompanying drawings and the foregoing illustrations and descriptions, the basic principles and main features of the present invention, as well as its advantages, those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rolling squeeze water removal device for a screen sheet cleaning line, characterized by, include: Rack (1); A conveyor belt (2) is mounted on a frame (1) and has several conveyor rollers (3) spaced apart along the same axis. The water removal device is set on the frame (1) and includes several sets of water-absorbing rollers. The several sets of water-absorbing rollers and several conveying rollers (3) are arranged in a one-to-one correspondence and staggered arrangement. Each set of water-absorbing rollers includes an upper roller (4) and a lower roller (5) arranged at intervals. The upper roller (4) and the lower roller (5) are both covered with wood pulp sponge along the circumference. A spraying device (6) is installed on the frame (1) and located above several sets of water-absorbing rollers, which sprays water onto the wood pulp sponge in the water-absorbing rollers to soften the wood pulp sponge. The switching transmission structure (7) is set on the frame (1) and connected to the adjacent upper roller (4) and lower roller (5) for driving the upper roller (4) and lower roller (5) to move relative to the frame (1) so that they are arranged vertically or horizontally aligned on the same horizontal plane. The switching transmission structure (7) includes a rack (71) and a transmission component (72), as well as a first transverse guide groove (73) and a vertical guide groove (74) respectively disposed on both sides of the frame (1). One end of the first transverse guide groove (73) is connected to the upper end of the vertical guide groove (74). The upper roller (4) is movably disposed in the first transverse guide groove (73), and the lower roller (5) is movably disposed in the vertical guide groove (74). A second transverse guide groove (74) passes through the transmission component (72). 5) The lower roller (5) is movably disposed in the second transverse guide groove (75). The transmission component (72) is hinged to one end of the upper roller (4). A toothed ring (80) is disposed on one side of the transmission component (72) and the upper roller (4) at the same center. The rack (71) is disposed on the frame (1). The toothed ring (80) can move and mesh with the rack (71) as the transmission component (72) moves, so that the transmission component (72) can rotate upward with the central axis of the upper roller (4) when it moves.

2. The rolling extrusion dewatering device for a screen printing sheet cleaning line according to claim 1, characterized in that: A cylinder (76) is provided on the frame (1). A transverse guide rail (77) is provided on one side of the frame (1). A movable frame (78) is movably provided on the transverse guide rail (77) via a slider. The drive shaft of the cylinder (76) is connected to the movable frame (78). A plurality of first connecting rods (79) are provided on the movable frame (78). The first connecting rods (79) are hinged to the ends of the upper roller (4) one by one.

3. The rolling extrusion dewatering device for a screen printing sheet cleaning line according to claim 2, characterized in that: The spraying device (6) includes a water tank (61) mounted on a frame (1). The water tank (61) is connected to a plurality of spray pipes (62). The plurality of spray pipes (62) are arranged in a corresponding manner with a plurality of sets of water-absorbing rollers. The length direction of the spray pipes (62) is parallel to the length direction of the water-absorbing rollers. A plurality of nozzles (63) are spaced apart along the length direction of the spray pipes (62).

4. The rolling extrusion dewatering device for a screen printing sheet cleaning line according to claim 3, characterized in that: The frame (1) is provided with a first cover (64), and a drain pipe (65) is connected to the lower side of the first cover (64). The spraying device (6) and the water-absorbing roller are respectively arranged inside the first cover (64).

5. The rolling extrusion dewatering device for a screen printing sheet cleaning line according to claim 4, characterized in that: The first cover (64) is rotatably provided with a plurality of second covers (66), and the plurality of second covers (66) are respectively corresponding to a plurality of spray pipes (62). The second cover (66) can rotate to cover the spray pipes (62). The second cover (66) is provided with a transmission component (8) that can be driven to flip by displacement of the moving frame (78).

6. The rolling extrusion dewatering device for a screen printing sheet cleaning line according to claim 5, characterized in that: The transmission component (8) includes a second connecting rod (81). The two ends of the second cover (66) are respectively provided with rotating shafts. The rotating shafts are rotatably mounted on the first cover (64) through bearings. The second connecting rod (81) is connected to the rotating shafts, and a movable groove (83) runs through the second connecting rod (81) along its length direction. The movable frame (78) is provided with a plurality of third connecting rods (84) at intervals. The plurality of third connecting rods (84) and the plurality of second connecting rods (81) are respectively provided in a one-to-one correspondence. A fixed shaft is provided on one side of the third connecting rod (84), and the fixed shaft is movably mounted in the movable groove (83).

7. The rolling extrusion dewatering device for a screen printing sheet cleaning line according to claim 5, characterized in that: A recycling bin (86) is provided on the frame (1) below the drain pipe (65). The recycling bin (86) is connected to the water tank (61) and the circulating pump through a water pipe.

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