A digital uniform fluid spray system

Abstract

The utility model discloses a kind of digital uniform fluid spraying systems, including for sending material feeding device, for receiving material receiving device, and at least one set of spraying device being arranged between the feeding device and receiving device, the spraying device includes beam arranged in the direction perpendicular to the direction of the material advancing, multiple spray heads are arranged on the beam, the spraying width covered by the spray head is equal to or greater than the width of the material, and the spray head is connected with feeding device. The digital uniform fluid spraying system of the utility model, the material is colored, glued and the like by the spray head spraying mode, the amount of ink, glue and the like can be accurately controlled, almost no waste material, greatly reduce the processing cost of waste material, reduce the pollution to environment, and spraying uniformity is good.

Description

Technical Field

[0001] This utility model relates to a spraying device, specifically a digital uniform fluid spraying system. Background Technology

[0002] In existing technologies, fabrics are typically dyed using methods such as dip dyeing, flatbed dyeing, and rotary screen dyeing. This involves immersing the fabric in dye, allowing the dye to penetrate the fabric fibers and giving the fabric the same color as the dye. However, dip dyeing usually requires a large amount of dye to ensure complete immersion, resulting in significant waste after dyeing. The disposal of this waste poses a major environmental challenge. Besides the difficulty in processing the waste itself and its serious environmental pollution, the wastewater used for cleaning dye tanks and vats also contains waste dye, further polluting the environment. Furthermore, as people's living standards improve, their demands for fabric color quality are increasing, especially regarding color uniformity and accuracy.

[0003] Similar problems exist in other fields, such as adhesive application. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a digital uniform fluid spraying system that can spray materials such as cloth to achieve uniform coloring.

[0005] To address the aforementioned technical problems, this utility model provides a digital uniform fluid spraying system, comprising a feeding device for discharging materials, a receiving device for receiving materials, and at least one set of spraying devices disposed between the feeding device and the receiving device. The spraying device includes a crossbeam arranged in a direction perpendicular to the material's travel direction, and a plurality of nozzles arranged on the crossbeam. The spraying width covered by each nozzle is equal to or greater than the width of the material, and each nozzle is connected to a feeding device.

[0006] Furthermore, the feeding device is located above the receiving device, so that the material moves vertically from top to bottom, and there are two sets of spraying devices, located on both sides of the material.

[0007] Furthermore, the two sets of spraying devices are staggered in the vertical direction, and a recycling device is provided on the other side of the material at a position corresponding to each set of spraying devices.

[0008] Furthermore, the feeding device is located above the receiving device, and a first reversing roller and a second reversing roller are arranged between the feeding device and the receiving device. After the material is discharged from the feeding device, it moves vertically from top to bottom, then changes to moving from bottom to top after passing the first reversing roller, and is then conveyed to the receiving device for collection after passing the second reversing roller. There are two sets of spraying devices, one set of which is set on the side of the material moving from top to bottom, and the other set of which is set on the side of the material moving from bottom to top. A recycling device is arranged on the other side of the material at a position corresponding to each set of spraying devices.

[0009] Furthermore, the recycling device includes a negative pressure chamber connected to a negative pressure source; the negative pressure chamber has a suction port on the side facing the spraying device.

[0010] Furthermore, the spraying system is used to print on fabric, the material is fabric, the feeding device is a fabric feeding device for feeding out the fabric, the receiving device is a fabric receiving device for receiving the fabric, the spraying device is a printing device, and the supply device is an ink supply device.

[0011] Furthermore, the ink supply device includes an ink reservoir for containing prepared ink, and the ink reservoir is connected to the printhead via pipes.

[0012] Furthermore, the ink supply device includes an ink mixing tank and multiple ink cartridges, each of which is used to hold multiple inks of different colors. The ink mixing tank is connected to the printhead via pipes, and the ink mixing tank is connected to the multiple ink cartridges via pipes.

[0013] Furthermore, a drying device is also provided below the printing device.

[0014] Furthermore, the fabric feeding device includes a fabric unloading roll, a centering device, a heating device, a floating roller mechanism, and a fabric feeding roller mechanism arranged in sequence. The fabric taking-up device includes a taking-up roller and a taking-up roll. The fabric is released from the fabric unloading roll, passes through the centering device, the heating device, the floating roller mechanism, and the fabric feeding roller mechanism in sequence, reaches the printing position of the printhead, and is then taken up by the taking-up roll by the taking-up roller.

[0015] Furthermore, the fabric feeding roller mechanism is located above the printing device, and the fabric receiving roller is located below the printing device, so that the fabric passes vertically through the printing operation position.

[0016] This utility model's digital uniform fluid spraying system performs coloring and gluing operations on materials through nozzle spraying. It can precisely control the amount of ink and glue used, generates almost no waste, greatly reduces waste disposal costs, reduces environmental pollution, and achieves good spraying uniformity. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of an embodiment of the digital uniform fluid spraying system of this utility model.

[0018] Figure 2 This is a partial structural schematic diagram of another embodiment of the spraying device in this utility model.

[0019] Figure 3 This is a structural schematic diagram of another embodiment of the digital uniform fluid spraying system of this utility model.

[0020] In the diagram: 1. Fabric roll take-up, 2. Drying device, 3. Spraying device, 4. Fabric feeding roller mechanism, 5. Floating roller mechanism, 6. Heating device, 7. Centering device, 8. Fabric roll release, 9. Fabric take-up roller, 10. Fabric, 11. Recycling device, 12. First reversing roller, 13. Second reversing roller, 31. Spray nozzle, 32. Crossbeam. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0022] like Figure 1 As shown, an embodiment of the digital uniform fluid spraying system of this utility model includes a feeding device for feeding out materials, a receiving device for receiving materials, and at least one set of spraying devices 3 disposed between the feeding device and the receiving device. The spraying device 3 includes a crossbeam 32 arranged in a direction perpendicular to the direction of material travel. A plurality of nozzles 31 are arranged on the crossbeam 32. The spraying width covered by the nozzles 31 is equal to or greater than the width of the material. The nozzles 31 are connected to a feeding device (not shown in the figure).

[0023] In this embodiment, the spraying system is used to print on fabric, so the material is fabric 10, the feeding device is a fabric feeding device for feeding out the fabric, the receiving device is a fabric receiving device for receiving the fabric, the spraying device 3 is a printing device, and the feeding device is an ink supply device.

[0024] Because this invention uses inkjet printing instead of dyeing to color the fabric, the amount of ink needed to print the entire fabric can be accurately calculated based on the amount of ink required to print a unit area of ​​fabric. This allows for precise matching, ensuring that the ink is used up exactly after printing the entire fabric, or that there is very little ink left over. This greatly reduces the cost of waste ink disposal and significantly reduces environmental pollution.

[0025] Furthermore, since the spray width covered by the printhead 31 in this invention is equal to or greater than the width of the fabric 10, the entire fabric surface can be printed in one operation. During operation, only the fabric 10 needs to be moved, without moving the printhead 31. This significantly improves printing efficiency; it also greatly simplifies the structure of the printing device, reduces costs, and lowers the failure rate; furthermore, it simplifies the control system, further reducing costs, and also contributes to the consistency and uniformity of the printed colors.

[0026] In other embodiments, the spraying system of this invention can also be used to apply adhesives or spray other substances onto materials.

[0027] In this embodiment, the feeding device is located above the receiving device, allowing the material (fabric 10 in this embodiment) to move vertically from top to bottom. Two sets of spraying devices 3 are located on either side of the material. This structure allows simultaneous spraying from both sides of the fabric 10, significantly improving printing efficiency. Moving the fabric vertically from top to bottom allows the nozzles 31 to spray horizontally from both sides, resulting in more uniform printing without needing to change the orientation of the fabric 10. Furthermore, it makes the tension of the fabric 10 easier to control, avoiding uneven printing caused by tension variations. The spraying devices 3 on both sides of the fabric can print the same color or different colors.

[0028] Since most fabrics are made of woven fibers, some of the ink droplets ejected from the printhead 31 inevitably pass through the gaps between the fibers and enter the air during printing. If not treated, these ink droplets can easily contaminate the printhead on the opposite side, and these ink droplets flying into the air will pollute the air. If inhaled by the operator, they will also affect the operator's health.

[0029] Therefore, as Figure 2 As shown, in this embodiment, the two sets of spraying devices 3 are staggered vertically, and a recovery device 11 is provided on the other side of the material at a position corresponding to each set of spraying devices. The recovery device 11 includes a negative pressure chamber connected to a negative pressure source (e.g., a vacuum pump, not shown in the figure); a suction port is provided on the side of the negative pressure chamber facing the spraying device. A negative pressure is generated in the negative pressure chamber by the negative pressure source, and surrounding air is drawn into the negative pressure chamber through the suction port. Ink droplets in the air are simultaneously drawn into the negative pressure chamber, then filtered before being discharged into the atmosphere, thus avoiding air pollution from ink droplets.

[0030] In one embodiment, the ink supply device includes ink reservoirs for holding prepared ink, each reservoir being connected to the printhead via pipes. Based on this embodiment, before printing, the ink is prepared in advance according to the desired color and quantity, and then the prepared ink is injected into the ink reservoirs. During printing, the ink from the reservoirs is supplied to the printheads through pipes to complete the printing operation.

[0031] In another embodiment, the ink supply device includes an ink mixing tank and multiple ink cartridges, each containing ink of a different color. The ink mixing tank is connected to the printhead via pipes, and the ink cartridges are also connected via pipes. Based on this embodiment, there is no need to prepare the ink before printing. Only the mixing ratio of each basic color ink needs to be calculated according to the desired printing color, and the various colors of ink are supplied to the ink mixing tank through pipes. During printing, ink is drawn from each basic color cartridge in proportion, mixed in real-time in the ink mixing tank, and then supplied to the printhead through pipes to complete the printing operation. In this embodiment, the amount of ink used for each basic color can be provided as needed based on the calculated mixing ratio and usage, or more can be provided if the usage is sufficient, for example, the amount of ink used for the most frequently used color can be provided or more. Since this embodiment involves real-time mixing during printing, only the amount needed is mixed, preventing contamination of the basic color inks, and therefore, providing more ink will not result in waste.

[0032] When dyeing fabric using inkjet printing, the color is uniform across the entire roll, preventing cross-contamination. Therefore, drying is usually unnecessary after printing; the fabric can be directly rolled up and stored, allowing it to air dry naturally in subsequent processes. However, in special cases, such as when the two sides of the fabric have different colors, the ink must be dried before rolling to prevent color contamination. Figure 1 As shown, a drying device 2 can be installed below the printing device to dry the inkjet printer promptly after printing.

[0033] like Figure 1 As shown, in this embodiment, the fabric feeding device includes a fabric roll 8, a centering device 7, a heating device 6, a floating roller mechanism 5, and a fabric feeding roller mechanism 4 arranged in sequence. The fabric taking-up device includes a taking-up roller 9 and a taking-up roll 1. The fabric 10 is released from the fabric roll 8, passes through the centering device 7 for centering, and then passes through the heating device 6 to eliminate wrinkles and make it flat (i.e., achieve the effect of ironing). The floating roller mechanism 5 coordinates the amount of fabric fed from the fabric roll 8, and then passes through the fabric feeding roller mechanism 4, which is composed of a drive roller and a pressure roller, to reach the printing position of the printhead to complete the printing operation. Finally, it passes through the taking-up roller 9 and is taken up by the taking-up roll 1.

[0034] In this embodiment, simply placing the feed roller mechanism in the feed device above the printing device and the take-up roller below the printing device allows the fabric to pass vertically through the printing operation position. The unloading roll 8, centering device 7, heating device 6, floating roller mechanism 5, feed roller mechanism 4, take-up roller 9, and take-up roll 1 can all employ existing structures in the prior art.

[0035] In the above embodiments, the following problems may occur in certain situations: Since both sides of the fabric can be printed simultaneously, when the printed fabric passes through the take-up roller 9, the ink on one side will come into contact with the take-up roller. If the ink is not dry at this time, it may stick to the take-up roller 9. This will cause: the ink on the fabric to stick to the take-up roller 9, resulting in uneven and inaccurate color of the fabric itself; the ink stuck to the take-up roller 9 may stick to the next section of fabric, resulting in uneven and inaccurate color of the next section of fabric; after printing a piece of fabric, the take-up roller needs to be cleaned, which wastes water and the wastewater is difficult to treat and is not environmentally friendly, and also increases the number of processes and affects printing efficiency.

[0036] To solve this problem, such as Figure 3 As shown, in another embodiment, the feeding device is located above the receiving device. A first reversing roller 12 and a second reversing roller 13 are provided between the feeding device and the receiving device. After the material is discharged from the feeding device, it moves vertically from top to bottom. After passing the first reversing roller 12, it changes to move from bottom to top. After passing the second reversing roller 13, it is transported to the receiving device for collection. There are two sets of spraying devices 3. One set of spraying devices 301 is located on the side of the material moving from top to bottom, and the second set of spraying devices 302 is located on the side of the material moving from bottom to top. A recycling device 11 is provided on the other side of the material at a position corresponding to each set of spraying devices 3.

[0037] In this embodiment, as the fabric travels from top to bottom, the first set of spraying devices 301 sprays ink onto the first side of the fabric. Then, the fabric is redirected by the first reversing roller 12, changing its direction to travel from bottom to top. Here, the un-sprayed second side of the fabric contacts the first reversing roller 12, preventing undried ink from adhering to it. Then, as the fabric travels from bottom to top, the second set of spraying devices 302 sprays ink onto the second side of the fabric. The fabric is then redirected by the second reversing roller 13, and finally, it is collected by the collecting device. When passing the second reversing roller 13, the first side of the fabric contacts it. Since the fabric has traveled a sufficient amount of time and distance, the ink is sufficiently dry and will no longer adhere to the second reversing roller 13. Meanwhile, as the fabric passes through the take-up roller 9 and is taken up on the take-up roll 1, the ink sprayed by the second set of spraying devices 302 has also traveled a sufficiently long time and distance, so it will not stick to the take-up roller 9. Of course, to further ensure the effect, a drying device 2 can be installed below the first set of spraying devices for drying.

[0038] Similarly, the recovery device 11 can use a negative pressure chamber, which is connected to a negative pressure source and has a suction port on the side facing the spraying device. The negative pressure source creates a negative pressure inside the negative pressure chamber, and the surrounding air is drawn into the negative pressure chamber through the suction port. At the same time, ink droplets in the air are drawn into the negative pressure chamber, filtered, and then discharged into the atmosphere, thus avoiding air pollution from ink droplets.

[0039] The above-described embodiments are merely preferred embodiments provided to fully illustrate the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are all within the scope of protection of the present invention. The scope of protection of the present invention is defined by the claims.

Claims

1. A digital uniform fluid spraying system, characterized in that, For spraying materials to achieve uniform coloring or adhesive application, the device includes a feeding device for feeding out materials, a receiving device for receiving materials, and at least one set of spraying devices disposed between the feeding device and the receiving device. The spraying device includes a crossbeam arranged in a direction perpendicular to the direction of material travel, and a plurality of nozzles arranged on the crossbeam. The spraying width covered by the nozzles is equal to or greater than the width of the material. The nozzles are connected to a feeding device and a controller.

2. The digital uniform fluid spraying system as described in claim 1, characterized in that, The feeding device is located above the receiving device, so that the material moves vertically from top to bottom. There are two sets of spraying devices, located on both sides of the material.

3. The digital uniform fluid spraying system as described in claim 2, characterized in that, The two sets of spraying devices are staggered in the vertical direction, and a recycling device is provided on the other side of the material at a position corresponding to each set of spraying devices.

4. The digital uniform fluid spraying system as described in claim 1, characterized in that, The feeding device is located above the receiving device. A first reversing roller and a second reversing roller are provided between the feeding device and the receiving device. After being fed from the feeding device, the material moves vertically from top to bottom. After passing the first reversing roller, it changes to move from bottom to top, and after passing the second reversing roller, it is conveyed to the receiving device for collection. There are two sets of spraying devices. One set of spraying devices is located on the side of the material moving from top to bottom, and the other set of spraying devices is located on the side of the material moving from bottom to top. A recycling device is provided on the other side of the material at a position corresponding to each set of spraying devices.

5. The digital uniform fluid spraying system as described in claim 3 or 4, characterized in that, The recycling device includes a negative pressure chamber connected to a negative pressure source; the negative pressure chamber has a suction port on the side facing the spraying device.

6. The digital uniform fluid spraying system as described in any one of claims 1-4, characterized in that, The spraying system is used to print on fabric, the material being fabric, the feeding device being a fabric feeding device for feeding out the fabric, the receiving device being a fabric receiving device for receiving the fabric, the spraying device being a printing device, and the supply device being an ink supply device.

7. The digital uniform fluid spraying system as described in claim 6, characterized in that, The ink supply device includes an ink reservoir for holding prepared ink, and the ink reservoir is connected to the printhead via pipes.

8. The digital uniform fluid spraying system as described in claim 6, characterized in that, The ink supply device includes an ink mixing tank and multiple ink cartridges, each of which is used to hold multiple inks of different colors. The ink mixing tank is connected to the printhead via pipes, and the ink mixing tank is connected to the multiple ink cartridges via pipes.

9. The digital uniform fluid spraying system as described in claim 6, characterized in that, A drying device is also provided below the printing device.

10. The digital uniform fluid spraying system as described in claim 6, characterized in that, The fabric feeding device includes a fabric unloading roll, a centering device, a heating device, a floating roller mechanism, and a fabric feeding roller mechanism arranged in sequence. The fabric taking-up device includes a taking-up roller and a taking-up roll. The fabric is released from the fabric unloading roll, passes through the centering device, the heating device, the floating roller mechanism, and the fabric feeding roller mechanism in sequence, reaches the printing position of the printhead, and is then taken up by the taking-up roll by the taking-up roller.

11. The digital uniform fluid spraying system as described in claim 10, characterized in that, The fabric feeding roller mechanism is located above the printing device, and the fabric receiving roller is located below the printing device, so that the fabric passes vertically through the printing operation position.

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