Cloth feeding device of rotary screen printer

Abstract

The utility model relates to a cloth feeding device of a circular screen printer, which comprises a rack and two cleaning roller groups, a gap is arranged between the two cleaning roller groups, the rack is connected with two rotating rods, the cleaning roller groups are in one-to-one correspondence with the rotating rods, each cleaning roller group comprises a plurality of brushing rollers, the brushing rollers are detachably connected to the peripheral sides of the rotating rods, and the rack is connected with a rotating part. When impurities adhere to the surfaces of the brushing rollers, cloth feeding to the rotary screen printing machine body is stopped, the rotating rod is rotated by the rotating part, the brushing roller to be detached is made to be away from the cloth, the other brushing roller makes contact with the cloth, the cloth feeding device is restarted, the cloth is fed into the rotary screen printing machine body, the brushing roller to be detached is detached from the rotating rod, and the cloth feeding device is started again. And in the dismounting process, the transportation of the cloth does not need to be stopped, so that the shutdown time is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of rotary screen printing machines, and more particularly to a fabric feeding device for a rotary screen printing machine. Background Technology

[0002] Polyester is an important type of synthetic fiber and is the commercial name for polyester fiber in my country. Due to its advantages such as easy washing and quick drying, acid and alkali resistance, good abrasion resistance, strength and durability, good elasticity and resistance to deformation, it has a wide range of applications in the clothing industry.

[0003] Printing on polyester can significantly enhance its decorative appeal; however, as consumers' aesthetic demands increase, traditional printing and dyeing processes are no longer sufficient to meet these needs. Nowadays, both adult and children's clothing exhibit greater personalization requirements, demanding more decorative effects on fabrics, such as reversible garments. This makes double-sided printing on polyester an innovative approach. Polyester printing typically utilizes rotary or flatbed screen printing machines.

[0004] Chinese patent CN213199165U discloses a fabric feeding device for a rotary screen printing machine. The device includes a fabric feeding box with a fabric inlet and an fabric outlet. A fabric feeding roller is rotatably connected to one end of the feeding box near the inlet, and a fabric outlet roller is rotatably connected to the other end near the outlet. A fabric outlet motor is connected to the feeding box to drive the fabric outlet roller. A first brush roller and a second brush roller are rotatably connected to the feeding box, each with multiple first brushes. A drive assembly is provided on the feeding box to rotate the first and second brush rollers. This application uses the first and second brush rollers to brush off particles, lint, and other dust from the fabric, reducing impurities on the fabric surface, minimizing the impact on the printing process, and to some extent reducing the amount of ink used.

[0005] Regarding the aforementioned technologies, after prolonged use, impurities may easily adhere to the surfaces of the first and second brush rollers, potentially affecting the cleaning effect. Replacing the first or second brush roller is inconvenient due to the lengthy disassembly and assembly process, resulting in extended downtime and reduced work efficiency. Utility Model Content

[0006] To reduce downtime required when changing brush rollers and improve work efficiency, this application provides a fabric feeding device for a rotary screen printing machine.

[0007] The fabric feeding device for a rotary screen printing machine provided in this application adopts the following technical solution:

[0008] A fabric feeding device for a rotary screen printing machine includes a frame and two cleaning roller groups. The two cleaning roller groups are spaced apart vertically and have gaps between them for fabric to pass through. The frame is connected to two rotating rods, the length of which is aligned with the width of the fabric. The two rotating rods are spaced apart vertically. Each cleaning roller group corresponds to one of the rotating rods. Each cleaning roller group includes several brush rollers, which are sequentially spaced apart along the circumference of the rotating rods. The brush rollers are detachably connected to the circumference of the rotating rods and are used to contact the fabric. The frame is connected to a rotating component that drives the rotating rods to rotate.

[0009] By adopting the above technical solution, when the fabric is fed, it passes through two sets of cleaning rollers. The brush rollers contact the fabric and clean impurities on the fabric surface, thereby reducing impurities on the fabric surface. After long-term use, the impurities adhere to the surface of the brush rollers. The feeding of fabric to the rotary screen printing machine body is stopped, and the rotating component rotates the rotating rod, so that the brush roller to be disassembled is moved away from the fabric, and the other brush roller comes into contact with the fabric. The fabric feeding device is then restarted, so that the fabric is fed into the rotary screen printing machine body, and the brush roller to be disassembled is removed from the rotating rod. During the disassembly process, it is not necessary to stop the fabric transportation, thereby reducing downtime and improving work efficiency.

[0010] Optionally, the rotating rod is connected to several support frames, each corresponding to a brush roller. The brush roller is detachably connected to the support frame. Each support frame has connecting grooves on both sides along the length of the brush roller, with the length of the connecting grooves aligned with the radial direction of the brush roller. One end of each connecting groove has a connecting opening. Two connecting grooves are respectively located at both ends of the brush roller along its length, and both ends of the brush roller are respectively embedded in the two connecting grooves. The brush roller is slidably connected to the connecting groove and the connecting opening along its radial direction. Each end of the connecting groove has a sliding hole on its inner wall along its width. A support rod is slidably connected in the sliding hole. The support rod passes through the width of the connecting groove and is slidably connected to the connecting groove and the sliding hole. When the support rod is located in the connected groove, it contacts the brush roller. The support rod is connected to a locking component, which is used to lock the support rod in the sliding hole.

[0011] By adopting the above technical solution, when impurities adhere to the surface of the brush roller, the rotating component drives the rotating rod to rotate, causing the brush roller with impurities to move away from the fabric and allowing another brush roller to contact the fabric. When removing the brush roller with impurities, the locking component unlocks the support rod, which passes through the connecting hole along its length, moving away from the connecting groove and opening the connection port. This facilitates the removal of the brush roller from the connecting groove and the disassembly of the brush roller. When installing the brush roller, the cleaned brush roller is embedded in the connecting groove, and the support rod passes through the connecting groove and the sliding hole along the width of the connecting groove. The locking component locks the support rod in the connecting groove, closing the connection port and contacting the support rod with the brush roller, thus ensuring that the brush roller is stably connected to the support frame.

[0012] Optionally, a mounting groove is provided on the periphery of the support rod, the length direction of the mounting groove being consistent with the radial direction of the support rod. The locking assembly includes a first spring and a locking block. The length direction of the first spring is consistent with the length direction of the mounting groove. One end of the first spring is connected to the inner wall of the mounting groove, and the other end of the first spring is connected to the locking block. The locking block is slidably connected to the mounting groove along the length direction of the mounting groove. A locking groove is provided on the inner wall of the sliding hole for the locking block to be embedded. When the locking block is embedded in the locking groove, the support rod contacts the brush roller.

[0013] By adopting the above technical solution, when installing the support rod, it passes through the connecting groove and the sliding hole along the width direction of the connecting groove. Under the squeezing action of the inner wall of the sliding hole, the locking block is embedded in the installation groove. The locking block squeezes the first spring, causing the first spring to deform. When the locking block approaches the locking groove, the first spring returns to its shape and pushes the locking block to slide and connect in the installation groove along the length direction of the installation groove, and drives the locking block to embed in the locking groove, so that the support rod is stably connected in the connecting groove and the sliding hole. The support rod contacts the brush roller, so that the brush roller is stably connected in the connecting groove.

[0014] Optionally, the support rod is rotatably connected in the sliding hole, and the locking block has a guide surface on one side of the support rod circumferentially. The guide surface is inclined and facilitates the locking block to move away from the locking groove.

[0015] By adopting the above technical solution, when disassembling the brush roller, the support rod is rotated, the inner wall of the sliding hole is pressed against the locking block, and the locking block is embedded in the mounting groove by the guiding action of the guide surface, so that the locking block is away from the locking groove, thereby facilitating the support rod to move along its length and away from the connecting groove, which makes it easier to disassemble the brush roller.

[0016] Optionally, the frame is connected to a collection box, the length direction of which is consistent with the width direction of the fabric. The collection box has an opening at the top and is positioned above the fabric. The frame is connected to a moving component, which drives the collection box to move along the fabric transport direction. The collection box is used to collect impurities that fall off when the brush roller is disassembled.

[0017] By adopting the above technical solution, when impurities adhere to the brush roller, the rotating rod rotates, causing the brush roller to be disassembled to move away from the fabric. After the rotation is completed, the moving component drives the collection box to move along the fabric transport direction, and the collection box is positioned below the brush roller to be disassembled. When the brush roller is disassembled, the brush roller shakes, and some impurities fall into the collection box, thereby minimizing the possibility of impurities on the surface of the brush roller falling onto the fabric surface and contaminating the fabric during the disassembly of the brush roller.

[0018] Optionally, each cleaning roller assembly is equipped with a first motor at one end along its length. The first motor is connected to the frame. The brush roller passes through a connecting groove along its length at the end near the first motor. The brush roller is rotatably connected to the connecting groove. The first motor is used to drive the brush roller to rotate. The output shaft of the first motor is detachably connected to one end of the brush roller through a connector. The frame is connected to a movable component. The movable component is used to drive the first motor to move along the length of the brush roller and to move the first motor closer to or away from the brush roller.

[0019] By adopting the above technical solution, during use, the connector connects the first motor and the brush roller. The first motor rotates and drives the brush roller to rotate, thereby cleaning the fabric. When impurities adhere to the surface of the brush roller, the first motor is detached from one end of the brush roller through the connector. The moving part drives the first motor to move along the length of the brush roller, so that the first motor is away from the brush roller. After the first motor is away from the brush roller, the rotating rod rotates. The first motor is detachably connected to the brush roller, which facilitates the replacement and cleaning of the brush roller. Moreover, one set of cleaning rollers corresponds to one motor, reducing production costs and space occupation.

[0020] Optionally, the connecting component is a cylinder connected to the output shaft of the first motor. The cylinder is slidably sleeved on one end of the brush roller. The central axis of the cylinder is collinear with the central axis of the brush roller. A limiting block is connected inside the cylinder. A limiting groove for the limiting block to be embedded is opened on the periphery of the brush roller. The length direction of the limiting groove is consistent with the length direction of the brush roller. The limiting block is slidably connected to the limiting groove along the length direction of the brush roller.

[0021] By adopting the above technical solution, when in use, the cylinder is sleeved on one end of the brush roller, and the limiting block is embedded in the limiting groove. When the first motor drives the cylinder to rotate, the limiting effect of the limiting block and the limiting groove makes the brush roller rotate stably with the cylinder.

[0022] Optionally, the frame is connected to a dust collection hood, and the brush roller and the dust collection hood are distributed sequentially along the fabric transport direction. There are two dust collection hoods, which are distributed vertically at intervals. The two dust collection hoods are spaced apart to allow the fabric to pass through. The dust collection port of the dust collection hood faces the fabric. The dust collection hood is connected to a dust collection assembly, which is used to draw air into the dust collection hood.

[0023] By adopting the above technical solution, after the brush roller cleans the fabric surface, the fabric is transported to the dust collection hood. The dust collection component draws air into the dust collection hood, creating a negative pressure inside the dust collection hood, which causes impurities on the fabric surface to be drawn into the dust collection hood, thereby further reducing impurities on the fabric surface and improving the printing effect.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. After prolonged use, impurities adhere to the surface of the brush roller. Stop feeding the fabric into the rotary screen printing machine body, rotate the rotating rod to move the brush roller to be disassembled away from the fabric, and make the other brush roller contact the fabric. Restart the fabric feeding device to feed the fabric into the rotary screen printing machine body and remove the brush roller to be disassembled from the rotating rod. During the disassembly process, it is not necessary to stop the fabric transport, thereby reducing downtime and improving work efficiency.

[0026] 2. When impurities adhere to the surface of the brush roller, the rotating component drives the rotating rod to rotate, causing the brush roller with impurities to move away from the fabric and allowing another brush roller to contact the fabric. When removing the brush roller with impurities, the locking component unlocks the support rod, which passes through the connecting hole along its length, moving away from the connecting groove and opening the connection port. This facilitates the removal of the brush roller from the connecting groove and makes it easier to disassemble the brush roller. When installing the brush roller, the cleaned brush roller is embedded into the connecting groove, and the support rod passes through the connecting groove and the sliding hole along the width of the connecting groove. The locking component locks the support rod in the connecting groove, closing the connection port and making the support rod contact the brush roller, thus ensuring that the brush roller is stably connected to the support frame.

[0027] 3. In use, the connector connects the first motor and the brush roller. The first motor rotates and drives the brush roller to rotate, thereby cleaning the fabric. When impurities adhere to the surface of the brush roller, the first motor is detached from one end of the brush roller through the connector. The moving part drives the first motor to move along the length of the brush roller, so that the first motor is away from the brush roller. After the first motor is away from the brush roller, the rotating rod rotates. The first motor can be detachably connected to the brush roller, which facilitates the replacement and cleaning of the brush roller. Moreover, one set of cleaning rollers corresponds to one motor, reducing production costs and space occupation. Attached Figure Description

[0028] Figure 1 This is a three-dimensional structural diagram of this embodiment.

[0029] Figure 2 This is a top view of this embodiment.

[0030] Figure 3 This is the embodiment. Figure 2 Sectional view along the AA direction.

[0031] Figure 4 This is the embodiment. Figure 2 Sectional view along the BB direction.

[0032] Figure 5 This is the embodiment. Figure 4 Enlarged view of section E in the middle.

[0033] Figure 6 This is the embodiment. Figure 3 Enlarged view of section F in the middle.

[0034] Figure 7 This is the embodiment. Figure 2 A cross-sectional view along the CC direction.

[0035] Figure 8 This is the embodiment. Figure 7 A magnified view of section G in the middle.

[0036] Figure 9 This is the embodiment. Figure 2 Sectional view along the DD direction.

[0037] Explanation of reference numerals in the attached drawings: 100, frame; 110, rotating rod; 120, second motor; 130, guide roller; 140, flattening roller; 150, first motor; 151, cylinder; 152, limiting block; 160, first cylinder; 161, mounting plate; 170, collection box; 180, moving groove; 190, dust suction hood; 191, scraper; 200, cleaning roller assembly; 210, brushing roller; 211, limiting groove; 300, support frame; 310, connecting rod; 320, mounting plate. Mounting rod; 330, connecting groove; 331, connecting port; 332, sliding hole; 333, locking groove; 340, through hole; 400, support rod; 410, mounting groove; 500, locking assembly; 510, first spring; 520, locking block; 600, moving assembly; 610, lead screw; 620, third motor; 630, slider; 700, dust collection assembly; 710, air extraction pipe; 711, connecting pipe; 720, air pump; 730, dust collection box; 731, filter plate. Detailed Implementation

[0038] The following is in conjunction with the appendix Figure 1-9 This application will be described in further detail.

[0039] This application discloses a fabric feeding device for a rotary screen printing machine. (Refer to...) Figure 1 and Figure 2 A fabric feeding device for a rotary screen printing machine includes a frame 100, a rotating rod 110, and a cleaning roller group 200. The frame 100 is used to connect to the main body of the rotary screen printing machine, and the frame 100 is located on the feeding end side of the main body of the rotary screen printing machine.

[0040] Reference Figure 1 and Figure 3 Two rotating rods 110 are provided, with their length direction aligned with the width direction of the fabric. Both ends of each rotating rod 110 are rotatably connected to the frame 100 along its length. The two rotating rods 110 are spaced apart vertically, positioned above and below the fabric, respectively. Two cleaning roller sets 200 are provided, each corresponding to one of the rotating rods 110. The cleaning roller sets 200 are connected to the rotating rods 110, and the two cleaning roller sets 200 are spaced apart to allow the fabric to pass through.

[0041] Reference Figure 1 and Figure 3 The cleaning roller assembly 200 includes three brush rollers 210, which are distributed at equal angles along the circumference of the rotating rod 110. The length direction of the brush rollers 210 is consistent with the width direction of the fabric. The brush rollers 210 are connected to the rotating rod 110 via a support frame 300, and the brush rollers 210 are detachably connected to the support frame 300. The brush rollers 210 are used to contact the fabric.

[0042] Reference Figure 1 and Figure 3 The frame 100 is connected to a rotating component, which is a second motor 120. There are two second motors 120, each corresponding to a rotating rod 110. The output shaft of the second motor 120 is connected to one end of the rotating rod 110. When cleaning or replacing the brush roller 210, the fabric transport is stopped. The second motor 120 drives the rotating rod 110 to rotate, moving the brush roller 210 to be removed away from the fabric and allowing the other brush roller 210 to come into contact with the fabric. Once the brush roller 210 is in contact with the fabric, the fabric continues to be transported. This reduces downtime when replacing or cleaning the brush roller 210 and improves work efficiency.

[0043] Reference Figure 1 and Figure 3 The frame 100 is connected to a guide roller 130 and a flattening roller 140. Both the guide roller 130 and the flattening roller 140 are rotatably connected to the frame 100. The length direction of the guide roller 130 is aligned with the width direction of the fabric, and the length direction of the flattening roller 140 is aligned with the length direction of the guide roller 130. The guide roller 130, the flattening roller 140, and the brushing roller 210 are distributed sequentially at intervals along the fabric transport direction. The fabric passes sequentially above the guide roller 130 and below the flattening roller 140.

[0044] Reference Figure 3 and Figure 4 The support frame 300 is connected to the periphery of the rotating rod 110. The support frame 300 includes a connecting rod 310 and a mounting rod 320. The length direction of the connecting rod 310 is consistent with the radial direction of the rotating rod 110. One end of the connecting rod 310 is connected to the periphery of the rotating rod 110 along its length direction, and the other end of the connecting rod 310 is connected to the mounting rod 320. The length direction of the mounting rod 320 is consistent with the length direction of the rotating rod 110, and the mounting rod 320 is U-shaped.

[0045] Reference Figure 4 and Figure 5 The mounting rod 320 has connecting grooves 330 at both ends along its length. The two connecting grooves 330 are respectively located at both ends of the brush roller 210 along its length. The length of the connecting grooves 330 is aligned with the radial direction of the brush roller 210. The brush roller 210 is rotatably connected to the connecting grooves 330 at both ends along its length. A connecting opening 331 is provided at one end of the connecting groove 330 for the brush roller 210 to pass through. The brush roller 210 is slidably connected to the connecting groove 330 and the connecting opening 331 along its length.

[0046] Reference Figure 3 and Figure 6 A support rod 400 passes through the connecting groove 330, with its length aligned with the width of the connecting groove 330. The support rod 400 is used to open or close the connecting port 331. Sliding holes 332 are formed on the inner walls of both ends of the connecting groove 330, with their depth aligned with the width of the connecting groove 330. The support rod 400 passes through the connecting groove 330 and slides within the sliding holes 332, rotatably connecting to the connecting groove 330. A locking assembly 500 is connected to the support rod 400, used to lock the support rod 400 within the sliding holes 332. When the support rod 400 is locked within the sliding holes 332, it is positioned within the connected groove 330 and contacts the brush roller 210.

[0047] Reference Figure 6 and Figure 7The support rod 400 has two mounting grooves 410 on its circumference. These grooves are located at both ends of the support rod 400 along its length, with their lengths aligned radially with the support rod 400. Each mounting groove 410 corresponds to a sliding hole 332. Two locking components 500 are also provided, each corresponding to a mounting groove 410 and connected within the groove. Each locking component 500 includes a first spring 510 and a locking block 520. The length of the first spring 510 aligns with the length of the mounting groove 410. One end of the first spring 510 is connected to the inner wall of the mounting groove 410, and the other end is connected to the locking block 520. The locking block 520 is slidably connected within the mounting groove 410 along its length.

[0048] Reference Figure 6 and Figure 8 The inner wall of the sliding hole 332 has a locking groove 333 for the locking block 520 to be inserted. When the locking block 520 is inserted into the locking groove 333, the support rod 400 is locked in the sliding hole 332 and contacts the brush roller 210. The locking block 520 has a guide surface on one side of the circumference of the support rod 400. The guide surface is located at the end of the locking block 520 away from the first spring 510 and is inclined to facilitate the locking block 520 moving away from the locking groove 333. When disassembling the brush roller 210, the support rod 400 is rotated to move the locking block 520 away from the locking groove 333, thereby facilitating the removal of the support rod 400 from the connecting groove 330, opening the connecting port 331, and facilitating the disassembly of the brush roller 210.

[0049] Reference Figure 1 and Figure 4 The frame 100 is connected to two first motors 150. The two first motors 150 are distributed at intervals in the vertical direction, and each first motor 150 corresponds to a cleaning roller group 200. The first motor 150 is used to drive the brush roller 210, which is located near the fabric, to rotate.

[0050] Reference Figure 4 and Figure 5 The mounting rod 320 has a through hole 340 at one end near the first motor 150, and the through hole 340 communicates with the connecting groove 330. The brush roller 210 passes through the through hole 340 along the length of the brush roller 210 at one end near the first motor 150, and the brush roller 210 is rotatably connected in the through hole 340.

[0051] Reference Figure 4 and Figure 5The frame 100 is connected to a movable component, which is a first cylinder 160. Two first cylinders 160 are provided, and their lengths are aligned with the length of the brush roller 210. The piston rods of the first cylinders 160 are connected to mounting plates 161, whose lengths are aligned with the vertical direction. A first motor 150 corresponds to a mounting plate 161 and is connected to it. The output shaft of the first motor 150 extends along the length of the brush roller 210 and is close to it. The first motor 150 is connected to a connecting component, which is a cylinder 151. The length of the cylinder 151 is aligned with the length of the brush roller 210, and the cylinder 151 is connected to the output shaft of the first motor 150. The central axis of the cylinder 151 is collinear with the central axis of the output shaft of the first motor 150.

[0052] Reference Figure 4 and Figure 5 A cylindrical cylinder 151 is slidably fitted onto one end of the brush roller 210. The central axis of the cylindrical cylinder 151 is collinear with the central axis of the brush roller 210. A limiting block 152 is connected to the inner wall of the cylindrical cylinder 151. A limiting groove 211 is provided on the periphery of the brush roller 210 for the limiting block 152 to be inserted. The length direction of the limiting groove 211 is consistent with the length direction of the brush roller 210. The limiting block 152 is slidably connected to the limiting groove 211 along the length direction of the brush roller 210. In use, the cylindrical cylinder 151 is fitted onto the brush roller 210, and the limiting block 152 is embedded in the limiting groove 211, so that the brush roller 210 rotates stably with the cylindrical cylinder 151. When the brush roller 210 is replaced, the first cylinder 160 drives the first motor 150 and the cylindrical cylinder 151 to move along the length of the brush roller 210, so that the cylindrical cylinder 151 moves away from the brush roller 210, thus facilitating the brush roller 210 to move away from the fabric.

[0053] Reference Figure 1 and Figure 3 The frame 100 is connected to a collection box 170, which is located above the fabric and on the side of the brushing roller 210 near the flattening roller 140. The length of the collection box 170 is consistent with the width of the fabric, and the top of the collection box 170 is open. The frame 100 is connected to a moving component 600, which drives the collection box 170 to move along the fabric transport direction.

[0054] Reference Figure 1 and Figure 3The frame 100 has a moving groove 180, the length of which is aligned with the fabric transport direction. The moving assembly 600 includes a lead screw 610, a third motor 620, and a slider 630. The length of the lead screw 610 is aligned with the length of the moving groove 180, and the lead screw 610 is rotatably connected within the moving groove 180. The slider 630 is embedded within the moving groove 180 and threaded onto the lead screw 610. The slider 630 is slidably connected within the moving groove 180 along its length. The third motor 620 is connected to the frame 100 and to one end of the lead screw 610. The slider 630 is connected to one end of the collection box 170 along its length. When disassembling the brush roller 210, the third motor 620 drives the lead screw 610 to rotate, and causes the slider 630 to move in the collection box 170 along the fabric transport direction, so that the collection box 170 is located below the brush roller 210 to be disassembled, thereby minimizing the pollution of the fabric caused by impurities falling onto the fabric surface when the brush roller 210 is disassembled.

[0055] Reference Figure 3 and Figure 9 The frame 100 is connected to two dust collection hoods 190. The length direction of the dust collection hoods 190 is consistent with the width direction of the fabric. The two dust collection hoods 190 are distributed vertically at intervals, and the two dust collection hoods 190 are provided with gaps for the fabric to pass through. The dust collection port of the dust collection hood 190 is facing the fabric. The brush roller 210 and the dust collection hoods 190 are distributed sequentially along the fabric transport direction. A scraper 191 is connected to the end of the dust collection hood 190 near the fabric. The length direction of the scraper 191 is consistent with the length direction of the dust collection hood 190. The scraper 191 is connected to the end of the dust collection hood 190 away from the brush roller 210, and the bottom of the scraper 191 is used to contact the fabric.

[0056] Refer to 1 and Figure 3 The frame 100 is connected to a dust collection assembly 700. The dust collection hood 190 includes an air extraction pipe 710, an air pump 720, and a dust collection box 730. A scraper 191 is connected to the end of the dust collection hood 190 near the fabric. The length direction of the scraper 191 is consistent with the length direction of the dust collection hood 190, and the scraper 191 is connected to the end of the dust collection hood 190 away from the brush roller 210. The bottom of the scraper 191 is used to contact the fabric.

[0057] Reference Figure 3 and Figure 9An air pump 720 is connected to the frame 100. One end of an air extraction pipe 710 is connected to the air pump 720, and the other end of the air extraction pipe 710 is connected to two connecting pipes 711. Each connecting pipe 711 corresponds to a dust collection hood 190. One end of each connecting pipe 711 is connected to the air extraction pipe 710, and the other end is connected to the dust collection hood 190. A dust collection box 730 is connected to the air extraction pipe 710 and is located between the connecting box and the air pump 720. A filter plate 731 is connected inside the dust collection box 730 and is located near the end of the collecting box 170 close to the connecting pipe 711. After the fabric passes through the brush roller 210, it passes through the dust collection hood 190. The air pump 720 extracts air from the dust collection hood 190, creating a negative pressure inside the dust collection hood 190, which draws impurities into the dust collection hood 190, thereby reducing impurities on the fabric surface and improving the printing effect.

[0058] The implementation principle of the fabric feeding device of a rotary screen printing machine according to an embodiment of this application is as follows: When the fabric is fed, it passes through the brush roller 210 and the dust suction hood 190 in sequence to reduce impurities on the surface of the fabric. When impurities adhere to the surface of the brush roller 210, the fabric feeding is stopped. The first cylinder 160 drives the first motor 150 and the cylinder 151 to move, so that the cylinder 151 moves away from the brush roller 210. The second motor 120 drives the rotating rod 110 to rotate, so that the brush roller 210 to be disassembled moves away from the fabric, and the brush roller 210 without impurities comes into contact with the fabric. After the brush roller 210 comes into contact with the fabric, the first cylinder 160 drives the first motor 150 and the cylinder 151 to move, so that the cylinder 151 is sleeved on one end of the brush roller 210, the limiting block 152 is embedded in the limiting groove 211, and the fabric feeding continues. When disassembling the brush roller 210, the support rod 400 is rotated, and the inner wall of the sliding hole 332 presses against the locking block 520. Under the guidance of the guide surface, the locking block 520 is embedded in the mounting groove 410, which facilitates the removal of the support rod 400 from the connecting groove 330, thereby opening the connecting port 331 and facilitating the cleaning and replacement of the brush roller 210. The downtime required for disassembling the brush roller 210 is short, improving work efficiency.

[0059] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A fabric feeding device for a rotary screen printing machine, comprising a frame (100) and a cleaning roller group (200), wherein two cleaning roller groups (200) are provided, the two cleaning roller groups (200) are distributed at intervals along the vertical direction, and the two cleaning roller groups (200) are provided with gaps for the fabric to pass through, characterized in that: The frame (100) is connected to two rotating rods (110). The length direction of the rotating rods (110) is consistent with the width direction of the fabric. The two rotating rods (110) are distributed at intervals in the vertical direction. The cleaning roller group (200) corresponds one-to-one with the rotating rods (110). The cleaning roller group (200) includes a plurality of brushing rollers (210). The plurality of brushing rollers (210) are distributed at intervals along the circumference of the rotating rods (110). The brushing rollers (210) are detachably connected to the circumference of the rotating rods (110). The brushing rollers (210) are used to contact the fabric. The frame (100) is connected to a rotating component. The rotating component is used to drive the rotating rods (110) to rotate.

2. The fabric feeding device of a rotary screen printing machine according to claim 1, characterized in that: The rotating rod (110) is connected to several support frames (300), each support frame (300) corresponding to a brush roller (210). The brush roller (210) is detachably connected to the support frame (300). Each support frame (300) has a connecting groove (330) on both sides along the length of the brush roller (210). The length of the connecting groove (330) is aligned with the radial direction of the brush roller (210). A connecting port (331) is provided at one end of each connecting groove (330) along its length. Two connecting grooves (330) are respectively located at both ends of the brush roller (210) along its length, and both ends of the brush roller (210) are respectively embedded in the two connecting grooves (330). The brush roller (210) is slidably connected to the connecting groove (330) and the connecting port (331) along its radial direction. The connecting groove (330) has sliding holes (332) on the inner walls at both ends along its width. A support rod (400) is slidably connected in the sliding hole (332). The support rod (400) passes through the connecting groove (330) along its width direction and is slidably connected to the connecting groove (330) and the sliding hole (332). When the support rod (400) is located in the connected groove (330), the support rod (400) contacts the brush roller (210). The support rod (400) is connected to a locking component (500). The locking component (500) is used to lock the support rod (400) in the sliding hole (332).

3. The fabric feeding device of a rotary screen printing machine according to claim 2, characterized in that: The support rod (400) has a mounting groove (410) on its periphery. The length direction of the mounting groove (410) is consistent with the radial direction of the support rod (400). The locking assembly (500) includes a first spring (510) and a locking block (520). The length direction of the first spring (510) is consistent with the length direction of the mounting groove (410). One end of the first spring (510) is connected to the inner wall of the mounting groove (410), and the other end of the first spring (510) is connected to the locking block (520). The locking block (520) is slidably connected to the mounting groove (410) along the length direction of the mounting groove (410). The inner wall of the sliding hole (332) has a locking groove (333) for the locking block (520) to be embedded. When the locking block (520) is embedded in the locking groove (333), the support rod (400) contacts the brush roller (210).

4. The fabric feeding device of a rotary screen printing machine according to claim 3, characterized in that: The support rod (400) is rotatably connected to the sliding hole (332). The locking block (520) has a guide surface on one side of the support rod (400) around its circumference. The guide surface is inclined and facilitates the locking block (520) to move away from the locking groove (333).

5. The fabric feeding device for a rotary screen printing machine according to claim 1, characterized in that: The frame (100) is connected to a collection box (170), the length direction of the collection box (170) is consistent with the width direction of the fabric, the top of the collection box (170) is open, the collection box (170) is located above the fabric, the frame (100) is connected to a moving component (600), the moving component (600) drives the collection box (170) to move along the fabric transport direction, the collection box (170) is used to collect impurities that fall off when the brush roller (210) is disassembled.

6. The fabric feeding device of a rotary screen printing machine according to claim 2, characterized in that: Each of the cleaning roller assembly (200) is provided with a first motor (150) at one end along its length direction. The first motor (150) is connected to the frame (100). The brush roller (210) is located near the first motor (150) and passes through the connecting groove (330) along the length direction of the brush roller (210). The brush roller (210) is rotatably connected in the connecting groove (330). The first motor (150) is used to drive the brush roller (210) to rotate. The output shaft of the first motor (150) is detachably connected to one end of the brush roller (210) through a connector. The frame (100) is connected to a moving part. The moving part is used to drive the first motor (150) to move along the length direction of the brush roller (210) and make the first motor (150) move closer to or away from the brush roller (210).

7. The fabric feeding device for a rotary screen printing machine according to claim 6, characterized in that: The connector is a cylindrical part (151) connected to the output shaft of the first motor (150). The cylindrical part (151) is slidably sleeved on one end of the brush roller (210). The central axis of the cylindrical part (151) is collinear with the central axis of the brush roller (210). A limiting block (152) is connected inside the cylindrical part (151). A limiting groove (211) for the limiting block (152) to be inserted is opened on the periphery of the brush roller (210). The length direction of the limiting groove (211) is consistent with the length direction of the brush roller (210). The limiting block (152) is slidably connected to the limiting groove (211) along the length direction of the brush roller (210).

8. The fabric feeding device of a rotary screen printing machine according to claim 1, characterized in that: The frame (100) is connected to a dust collection hood (190). The brush roller (210) and the dust collection hood (190) are distributed sequentially along the fabric transport direction. There are two dust collection hoods (190), which are distributed vertically at intervals. The two dust collection hoods (190) are spaced apart to allow the fabric to pass through. The dust collection port of the dust collection hood (190) faces the fabric. The dust collection hood (190) is connected to a dust collection assembly (700), which is used to draw air into the dust collection hood (190).

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