A PLA fiber plant dye jigger

Abstract

The present application relates to the technical field of printing and dyeing equipment, and discloses a PLA fiber plant dye jigger, a dyeing tank, a first cloth winding roller, a second cloth winding roller, a feeding assembly and a pressing assembly are arranged in the cylinder, the feeding assembly comprises a driving piece and a transfer roller, the transfer roller moves above the first cloth winding roller and the second cloth winding roller, the pressing assembly comprises a pushing piece and a pressing roller, the pressing roller moves up and down between the first cloth winding roller and the second cloth winding roller, the first cloth winding roller and the second cloth winding roller are hollow and have suction holes on the side surfaces, and the interiors of the two are connected with a vacuum pump, when feeding, the transfer roller drives the cloth to pass through the first cloth winding roller and the second cloth winding roller, the suction holes cooperate with the first cloth winding roller to wind the front end of the cloth, when the end of the cloth is close, the suction holes cooperate with the second cloth winding roller to wind the end of the cloth, and finally the pressing roller presses the cloth to the dyeing tank, the PLA fiber plant dye jigger has the effect of improving the dyeing quality of the cloth.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of printing and dyeing equipment, and particularly relates to a PLA fiber plant dye jigger. BACKGROUND

[0002] PLA fiber is a biobased degradable material made of corn, sugarcane and other plants as raw materials, and its dyeing process is significantly different from traditional petroleum-based fibers. When jiggering, a jigger is generally used for processing. Specifically, the dyeing liquid is placed in the dyeing tank, and then the cloth is continuously passed through the dyeing liquid by two alternating back-and-forth jiggering cloth rollers, so that the dyeing liquid is absorbed onto the cloth surface and adsorbed, combined and fixed during the jiggering process.

[0003] A high-temperature and high-pressure jigger is disclosed in a patent document with publication number CN102493139B. The jigger includes a pressure container, a window is opened in the side of the pressure container, a side cover is arranged at the window, a first roller and a second roller are arranged in the pressure container and are adjacent and parallel to each other, a dyeing tank is arranged below the first roller and the second roller, a steam input mechanism is connected to the pressure container, the first roller and the second roller are respectively connected to a first variable frequency driving device and a second variable frequency driving device, a vertical tensioning mechanism is arranged between the first roller and the dyeing tank, another vertical tensioning mechanism is arranged between the second roller and the dyeing tank, the vertical tensioning mechanism includes a guard rod, both ends of the guard rod are rotatably connected to both ends of the pressure container, a tensioning frame is fixed to the guard rod, an elastic tensioning mechanism is arranged between the tensioning frame and the inner wall of the pressure container, and the contact part of the guard rod that contacts the cloth has an arc-shaped surface that is arched in the middle.

[0004] One end of the cloth is wound around the first roller, and the other end of the cloth is wound around the second roller in sequence through the guard rod and the dyeing roller, so that the first roller and the second roller are reciprocally rotated and pass through the dyeing tank under the action of the dyeing roller to perform dyeing processing on the cloth.

[0005] However, the following problems still exist in the scheme. When placing the cloth, the cloth needs to be wound around the first roller first, and then the other end of the cloth is threaded to pass under the guard rod and the dyeing roller and then wound around the second roller. However, during the threading process, the cloth is prone to deviation, stacking or breakage, and in addition, the initial position of the cloth is not accurate, which leads to a decrease in dyeing uniformity and quality defects such as horizontal bar printing. SUMMARY

[0006] The present application provides a PLA fiber plant dye jigger, which aims to solve the problem of affecting dyeing quality caused by the deviation of the position of the cloth during the threading process in the related art.

[0007] The PLA fiber plant dye jigger of the application comprises a dyeing tank in a cylinder, a first cloth winding roller and a second cloth winding roller above the dyeing tank, and a feeding assembly and a pressing assembly; the feeding assembly comprises a driving member and a transfer roller, the output end of the driving member is connected with the transfer roller to drive the transfer roller to move above the first cloth winding roller and the second cloth winding roller; the pressing assembly comprises a pushing member and a pressing roller, the output end of the pushing member is connected with the pressing roller to drive the pressing roller to move up and down between the first cloth winding roller and the second cloth winding roller; the first cloth winding roller and the second cloth winding roller are hollow and have suction holes on the side surfaces, and the interiors of the two are connected with a vacuum pump; when feeding, the pressing roller is above the transfer roller, the transfer roller drives the cloth to pass through the first cloth winding roller and the second cloth winding roller; the suction holes cooperate with the first cloth winding roller to wind the front end of the cloth; when winding the end of the cloth, the transfer roller moves to the second cloth winding roller, the suction holes cooperate with the second cloth winding roller to wind the end of the cloth, and finally the pressing roller moves down to press the cloth into the dyeing tank.

[0008] The effect is that by setting the feeding assembly and the pressing assembly, the cloth is placed at the specified position by cooperation of the two when feeding, so as to reduce the deviation of the cloth. Specifically, when feeding is needed, the driving member drives the cloth to move through the transfer roller, and at the same time, the cloth moves above the first cloth winding roller and the second cloth winding roller; initially, the front end of the cloth on the transfer roller is placed downward, so that the front end of the cloth is in the same horizontal direction as the first cloth winding roller; when the transfer roller moves to the first cloth winding roller, the cloth is adsorbed on the side surface of the first cloth winding roller by the suction hole under the action of the vacuum pump; then the first cloth winding roller rotates to wind the cloth; when the end of the cloth is close, the transfer roller moves to the second cloth winding roller; after the suction hole on the second cloth winding roller adsorbs the cloth, the second cloth winding roller rotates to wind the remaining cloth on the transfer roller, so as to wind the end of the cloth on the second cloth winding roller; then the pushing member drives the pressing roller to move, and the cloth between the first cloth winding roller and the second cloth winding roller is pressed into the dyeing tank. By cooperation of the transfer roller and the pressing roller, the cloth is placed at the specified position, so as to avoid the phenomenon of wrinkles of the cloth, improve the feeding efficiency of the cloth, and improve the dyeing quality.

[0009] Preferably, a mounting shell is arranged in the cylinder, the driving member comprises a first air cylinder arranged in the mounting shell, a mounting sleeve slidingly assembled in the mounting shell and connected with the output end of the first air cylinder, and a second air cylinder mounted on the mounting sleeve, the output end of the second air cylinder is connected with the transfer roller, the first air cylinder drives the transfer roller to move to the outside of the cylinder through the mounting sleeve, and the second air cylinder drives the transfer roller to move above the first cloth winding roller and the second cloth winding roller.

[0010] The effect is that the first cylinder and the second cylinder are arranged to drive the material transfer roller to move to different positions. Specifically, the first cylinder drives the mounting sleeve to move, and the mounting sleeve carries the second cylinder to move synchronously to drive the material transfer roller to move to the outside of the cylinder. That is, the first cylinder can drive the cloth into the cylinder or take it out of the cylinder. The second cylinder drives the material transfer roller to move to the first cloth winding roller or the second cloth winding roller to load the cloth.

[0011] Preferably, a plurality of groups of adsorption holes are arranged around the center of the first cloth winding roller. Each group of adsorption holes is arranged along the center line direction of the first cloth winding roller.

[0012] The effect is that the plurality of adsorption holes are arranged to improve the stability of the adsorbed cloth.

[0013] Preferably, the output end of the pusher is provided with a receiving plate, the pressing roller is rotationally connected with the receiving plate, and two pressing rollers are arranged on the receiving plate.

[0014] The effect is that the receiving plate is arranged at the output end of the pusher, and the pusher drives the pressing roller to move through the receiving plate to adjust the position of the pressing roller.

[0015] Preferably, a support plate is arranged in the cylinder, a flat roller is rotationally arranged on the support plate, the flat roller is parallel to the pressing roller, the flat roller is located between the two pressing rollers, the flat roller is located above the dye tank, a tensioning motor connected with the flat roller is arranged on the support plate, and two spiral strips with opposite spiral directions are symmetrically arranged on the flat roller.

[0016] The effect is that the flat roller is arranged to keep the cloth evenly spread when the first cloth winding roller and the second cloth winding roller alternately wind the cloth, avoiding wrinkles in the dyeing process.

[0017] Preferably, the receiving plate includes a middle part and a sliding part, the middle part is connected with the pusher, the sliding part is arranged on both sides of the middle part, the pressing roller is connected with the sliding part, the sliding part is slidably arranged on the middle part, and an elastic member is arranged between the sliding part and the middle part.

[0018] The effect is that the elastic member between the sliding part and the middle part can automatically adjust the tension according to the tension of the cloth to control the tension within a reasonable range and avoid insufficient dyeing or breakage due to excessive tension.

[0019] Preferably, a driving motor connected with the first cloth winding roller and the second cloth winding roller is arranged outside the cylinder, and the driving motor drives the first cloth winding roller and the second cloth winding roller to rotate synchronously to alternately wind the cloth.

[0020] Its effect lies in setting the driving motor to drive the first cloth roller and the second cloth roller to rotate, thereby realizing the synchronous rotation of the two, and driving the cloth to reciprocate in the dye tank.

[0021] Preferably, the receiving plate is located on the side of the supporting plate away from the flattening roller, and when the pressing roller presses the cloth into the dye tank, the supporting plate is located between the two pressing rollers.

[0022] Its effect lies in making the pressing roller not contact the supporting plate when moving up and down, avoiding the phenomenon that the supporting plate interferes with the movement of the pressing roller.

[0023] Preferably, the output end of the second air cylinder is provided with a third air cylinder, the side surface of the third air cylinder is slidably assembled with a sliding plate connected with the material transfer roller, and the output end of the third air cylinder is connected with the sliding plate to drive the sliding plate to move up and down.

[0024] Its effect lies in that when the material transfer roller moves to the second cloth roller, the third air cylinder can drive the sliding plate to move downward to drive the cloth on the side surface of the material transfer roller to abut against the second cloth roller, so that the suction holes on the second cloth roller can suck the cloth, and the second cloth roller can conveniently wind the cloth.

[0025] Preferably, the sliding plate is provided with a placing rack, the placing rack is provided with a placing groove for placing the material transfer roller, and a limiting wheel abutting against the side surface of the material transfer roller is rotatably arranged on the placing rack.

[0026] Beneficial effects:

[0027] The present application sets the material transfer roller and the pressing roller, the driving member drives the material transfer roller to automatically enter and exit the barrel to complete cloth placement, the first cloth roller and the second cloth roller suck the cloth at the head and tail through the suction holes and wind the cloth, then the pressing roller moves downward to press the cloth into the dye tank, after dyeing is completed, the suction holes on the second cloth roller blow air reversely, and the self-adhesion of the wet cloth is combined to realize that the material transfer roller automatically winds the finished product, realizes the rapid feeding and discharging of the cloth, avoids wrinkles and other phenomena of the cloth during dyeing, and improves the dyeing quality and efficiency of the cloth.

[0028] By setting the transition connecting cloth at the head and tail of the cloth to be dyed, the overlap of the main body to be dyed when the second cloth roller winds the cloth from the material transfer roller is avoided, and dyeing omission or waste is prevented; the transition connecting cloth has similar physical properties to the cloth to be dyed, guarantees the uniformity of cloth winding, and simultaneously, as a process auxiliary carrier, does not need subsequent treatment, and further improves the effective utilization rate of the cloth to be dyed. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0030] Figure 2 It is a front view of the present application.

[0031] Figure 3 is Figure 2 is a sectional view of A-A section in the middle.

[0032] Figure 4 is a partial exploded schematic view of the laying roller and the receiving plate in the application.

[0033] Figure 5 is a partial exploded schematic view of the mounting shell and the mounting sleeve in the application.

[0034] Figure 6 is a schematic view of the structure of the placing rack in the application.

[0035] Figure 7 is a schematic view of the structure of the receiving plate in the application.

[0036] Figure 8 is Figure 7 is a schematic view of the structure at A in the middle.

[0037] Figure 9 is a schematic view of the structure of the first cloth winding roller in the application.

[0038] Reference signs:

[0039] 1, cylinder; 11, support plate; 12, laying roller; 13, tensioning motor; 14, spiral strip; 15, driving motor; 16, feeding opening; 17, blocking plate; 18, blocking cylinder; 2, dyeing tank; 3, first cloth winding roller; 31, adsorption hole; 4, second cloth winding roller; 5, pressing assembly; 51, pushing piece; 52, pressing roller; 6, driving piece; 61, first cylinder; 62, mounting sleeve; 63, second cylinder; 631, third cylinder; 632, sliding plate; 633, placing rack; 634, placing groove; 635, limiting wheel; 7, transfer roller; 8, mounting shell; 9, receiving plate; 91, middle part; 92, sliding part; 93, elastic piece. DETAILED DESCRIPTION

[0040] Embodiments of the application are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below by reference to the drawings are exemplary and are intended to explain the application, and cannot be understood as a limitation of the application.

[0041] As Figures 1 to 9As shown, the PLA fiber plant dye jigger of the present application comprises a cylinder 1, a dye tank 2, a first cloth winding roller 3, a second cloth winding roller 4, the dye tank 2, the first cloth winding roller 3 and the second cloth winding roller 4 are all arranged in the cylinder 1, the dye tank 2 is used for placing dyeing liquid for dyeing cloth, and the first cloth winding roller 3 and the second cloth winding roller 4 are both rotationally arranged in the cylinder 1. A feeding assembly and a pressing assembly 5 are further arranged in the cylinder 1, wherein the feeding assembly is used for assisting the cloth to be dyed to be wound on the first cloth winding roller 3 and the second cloth winding roller 4, and the pressing assembly 5 is used for pressing the cloth between the first cloth winding roller 3 and the second cloth winding roller 4 into the dye tank 2.

[0042] When the cloth is dyed, the cloth is wound on the first cloth winding roller 3 and the second cloth winding roller 4 through the feeding assembly, and then the cloth between the first cloth winding roller 3 and the second cloth winding roller 4 is pressed by the pressing assembly 5, so that the cloth enters the dye tank 2, and then the first cloth winding roller 3 and the second cloth winding roller 4 rotate synchronously to alternately wind the cloth, so that the cloth reciprocates through the dye tank 2, and the rotation speed of the first cloth winding roller 3 and the second cloth winding roller 4 is controlled to slowly move the cloth in the dye tank 2, so that the cloth is fully contacted with the dyeing liquid to realize uniform dyeing.

[0043] Referring to Figure 1 , Figure 2 , a driving motor 15 is arranged outside the cylinder 1, two driving motors 15 are correspondingly arranged with the first cloth winding roller 3 and the second cloth winding roller 4, and the output shafts of the two driving motors 15 are respectively connected with the first cloth winding roller 3 and the second cloth winding roller 4. In the embodiment, when the cloth is dyed, the two driving motors 15 drive the first cloth winding roller 3 and the second cloth winding roller 4 to synchronously rotate, and the rotation directions of the first cloth winding roller 3 and the second cloth winding roller 4 are the same, so that the first cloth winding roller 3 and the second cloth winding roller 4 can alternately wind the cloth when rotating to realize the reciprocating movement of the cloth in the dye tank 2.

[0044] Referring to Figure 2 , Figure 3 , Figure 4 , Figure 5 The feeding assembly comprises a driving member 6 and a transfer roller 7, wherein the driving member 6 is installed in the cylinder 1, the output end of the driving member 6 is connected with the transfer roller 7, the transfer roller 7 is rotationally matched with the driving member 6, the first cloth winding roller 3 and the second cloth winding roller 4 are arranged in the same plane, the transfer roller 7 is located above the plane where the first cloth winding roller 3 and the second cloth winding roller 4 are arranged, the transfer roller 7, the first cloth winding roller 3 and the second cloth winding roller 4 are all arranged in parallel, the driving member 6 drives the transfer roller 7 to move above the first cloth winding roller 3 and the second cloth winding roller 4, and the driving member 6 can drive the transfer roller 7 to move to the outside of the cylinder 1.

[0045] When the fabric is loaded, the driving member 6 drives the transfer roller 7 to move to the outside of the cylinder 1, and then the fabric to be dyed is placed on the transfer roller 7. Subsequently, the driving member 6 drives the transfer roller 7 to pass through the first fabric roller 3 and the second fabric roller 4 in turn. When passing through the first fabric roller 3, the driving motor 15 drives the first fabric roller 3 to rotate to wind the front end of the fabric, and the transfer roller 7 is driven to rotate passively, so that the fabric is wound on the first fabric roller 3. When the end of the fabric is close to the transfer roller 7, the first fabric roller 3 stops rotating, the driving member 6 drives the transfer roller 7 to move to the second fabric roller 4, and the second fabric roller 4 rotates to wind the remaining end of the fabric on the transfer roller 7, so that the front and rear ends of the fabric are wound on the first fabric roller 3 and the second fabric roller 4 respectively, so that the first fabric roller 3 and the second fabric roller 4 alternately wind the fabric.

[0046] Referring to Figure 2 , Figure 3 , Figure 9 , in order to facilitate the first fabric roller 3 and the second fabric roller 4 to wind the fabric, the first fabric roller 3 and the second fabric roller 4 are provided with the same structure, and the suction holes 31 are formed in the side surfaces of the first fabric roller 3 and the second fabric roller 4. The first fabric roller 3 and the second fabric roller 4 are hollow structures, and the suction holes 31 are in communication with the interiors of the first fabric roller 3 or the second fabric roller 4. The interiors of the first fabric roller 3 and the second fabric roller 4 are connected to a vacuum pump (not shown in the figure) through a sealing connector. The sealing connector comprises a first connecting part adapted and sealingly connected to the gas inlet of the vacuum pump, a second connecting part adapted and sealingly connected to the port of the first fabric roller 3 or the second fabric roller 4, and a sealing ring rotatably assembled between the first connecting part and the second connecting part. The sealing ring is in contact with the outer walls of the first connecting part and the second connecting part to form a sealing cavity which can rotate relative to the first connecting part and the second connecting part. The sealing cavity is in communication with the gas inlet of the vacuum pump and the internal passage of the first fabric roller 3 or the second fabric roller 4, so as to maintain the required negative pressure sealing environment of the vacuum pump when the first fabric roller 3 or the second fabric roller 4 rotates.

[0047] When the first fabric roller 3 or the second fabric roller 4 is required to wind the fabric, the vacuum pump is started to extract gas from the internal space of the pipeline, so that the internal pressure of the first fabric roller 3 or the second fabric roller 4 is reduced to below the standard atmospheric pressure, a stable negative pressure environment is formed and maintained, and air is sucked through the suction holes 31 to adsorb the fabric on the side surface of the first fabric roller 3 or the second fabric roller 4, so as to wind the fabric when the first fabric roller 3 or the second fabric roller 4 rotates.

[0048] Specifically, after the fabric is placed on the transfer roller 7, its front end hangs down to the same height as the first roll of fabric 3. When the transfer roller 7 moves to the first roll of fabric 3, the hanging front end of the fabric is located on the side of the first roll of fabric 3. At this time, the vacuum pump is started, and the hanging front end of the fabric is adsorbed through the adsorption holes 31. Then, the first roll of fabric 3 rotates to achieve the winding of the fabric. When the second roll of fabric 4 is needed to wind the fabric, the transfer roller 7 moves to the second roll of fabric 4, and the fabric is similarly adsorbed through the adsorption holes 31 on the second roll of fabric 4 to achieve the winding of the fabric by the second roll of fabric 4.

[0049] When the second roll of fabric 4 winds up the fabric, since there is fabric on both the first roll of fabric 3 and the transfer roller 7, some fabric overlap occurs as the second roll of fabric 4 rotates. To ensure the dyeing integrity and utilization rate of the main body of the fabric to be dyed, transition connecting fabrics are set at both ends of the fabric in this embodiment. These transition connecting fabrics do not need to be dyed and do not require subsequent post-dyeing processing; they are only used as process auxiliary carriers. When the second roll of fabric 4 winds up the remaining fabric on the transfer roller 7, local multi-layer overlap occurs in the early stage of winding. At this time, the transition connecting fabric at the end will enter the winding range of the second roll of fabric 4 first, and the overlap only occurs within the range of the transition connecting fabric, thus avoiding the overlap of the fabric to be dyed. At the same time, the setting of the transition connecting fabric can ensure that the fabric to be dyed comes into full contact with the dye liquid when the first roll of fabric 3 and the second roll of fabric 4 alternately wind up the fabric, improving the dyeing effect of the fabric.

[0050] In addition, in order to ensure that the fabric is not affected by the transition fabric, the transition fabric must have the same or similar physical properties as the fabric to be dyed, so as to ensure the uniformity of the whole winding when the first roll of fabric 3 or the second roll of fabric 4 is winding the fabric.

[0051] Multiple sets of adsorption holes 31 are provided on the first roll of fabric 3 or the second roll of fabric 4. Each set of multiple adsorption holes 31 is arranged along the length of the first roll of fabric 3. The fabric is adsorbed simultaneously through multiple adsorption holes 31 to ensure the stability of the fabric adsorption.

[0052] Reference Figure 3 , Figure 4 , Figure 5 An installation shell 8 is provided inside the cylinder 1. The driving component 6 includes a first cylinder 61, a second cylinder 63, and an installation sleeve 62. The first cylinder 61 is disposed inside the installation shell 8. The installation sleeve 62 is slidably mounted on the installation shell 8 in the horizontal direction. The piston rod of the first cylinder 61 is connected to the installation sleeve 62 to drive the installation sleeve 62 to move. The second cylinder 63 is mounted on the installation sleeve 62. The piston rod of the second cylinder 63 is connected to the transfer roller 7.

[0053] The first cylinder 61 drives the second cylinder 63 and the transfer roller 7 to move through the mounting sleeve 62, so as to drive the transfer roller 7 to move to the outside of the cylinder 1 to load the fabric, and then the first cylinder 61 is reset to drive the transfer roller 7 to move to the inside of the cylinder 1, and then the second cylinder 63 is started to drive the transfer roller 7 to move through the first fabric roller 3 or the second fabric roller 4.

[0054] Referring to Figure 4 , Figure 5 , Figure 6 A third cylinder 631 is arranged at the output end of the second cylinder 63, a sliding plate 632 is arranged on the side surface of the third cylinder 631 in a sliding mode, the output end of the third cylinder 631 is connected with the sliding plate 632 to drive the sliding plate 632 to move up and down, and the transfer roller 7 is connected with the sliding plate 632.

[0055] When the fabric is wound on the second fabric roller 4, the transfer roller 7 is first moved to the second fabric roller 4, and then the third cylinder 631 drives the transfer roller 7 to move downward through the sliding plate 632, so that the end of the fabric abuts against the side surface of the second fabric roller 4, so that the suction hole 31 on the second fabric roller 4 can suck the fabric.

[0056] In addition, a gas pump is arranged in communication with the inside of the second fabric roller 4, that is, the gas pump can inflate the inside of the second fabric roller 4 to realize the blowing operation of the suction hole 31. After the dyeing is completed, the third cylinder 631 drives the sliding plate 632 to move downward, so that the transfer roller 7 abuts against the fabric on the second fabric roller 4, and then the first fabric roller 3 rotates to wind most of the fabric on the first fabric roller 3, and when the end of the fabric corresponds to the transfer roller 7, the suction hole 31 blows the end of the fabric on the second fabric roller 4 to the transfer roller 7 under the action of the gas pump. Because the end of the fabric is wet due to the penetration of the dyeing liquid during the dyeing process, when the suction hole 31 blows the fabric to the transfer roller 7, the fabric will contact the side surface of the transfer roller 7, and the wet fabric will adhere to the side surface of the transfer roller 7, so that the transfer roller 7 can wind the dyed fabric when rotating.

[0057] Referring to Figure 5 , Figure 6 A placing rack 633 is arranged on the sliding plate 632, a placing groove 634 is arranged on the placing rack 633, the placing groove 634 is used to place the transfer roller 7, and a limiting wheel 635 abutting against the side surface of the transfer roller 7 is arranged on the placing rack 633 in a rotating mode. When the fabric is placed, the transfer roller 7 wound with the fabric can be directly placed in the placing groove 634, and is fixed through the limiting wheel 635. In this way, the fabric can be quickly replaced.

[0058] Referring to Figure 3 , Figure 4 , Figure 7The pressing assembly 5 includes a pusher 51 and a pressing roller 52. The pusher 51 is configured as a cylinder, and its output end is connected to the pressing roller 52. The pressing roller 52 and the output end of the pusher 51 are rotatably engaged. The pusher 51 drives the pressing roller 52 to move up and down between the first fabric roll 3 and the second fabric roll 4. The pressing roller 52 is located above the dyeing tank 2 and is arranged parallel to the first fabric roll 3.

[0059] Reference Figure 4 , Figure 7 During feeding, the pusher 51 moves the pressing roller 52 above the transfer roller 7 to prevent the pressing roller 52 from interfering with the movement of the transfer roller 7. After the fabric is wound onto the first roll roller 3 and the second roll roller 4 at both ends, the pusher 51 moves the pressing roller 52 downward into the dyeing tank 2. At the same time, the pressing roller 52 contacts the fabric and pulls the fabric into the dyeing tank 2, so that the fabric can pass through the dyeing solution for dyeing when the first roll roller 3 and the second roll roller 4 alternately wind up the fabric.

[0060] Reference Figure 4 , Figure 7 A receiving plate 9 is provided at the output end of the pusher 51. The pressing roller 52 is rotatably engaged with the receiving plate 9. Two pressing rollers 52 are spaced apart on the receiving plate 9 in the horizontal direction. The fabric is pressed by the two pressing rollers 52.

[0061] Reference Figure 7 , Figure 8 The receiving plate 9 includes a middle part 91 and a sliding part 92. The output end of the pushing member 51 is connected to the middle part 91. Two sliding parts 92 are provided, and the two sliding parts 92 are respectively provided on both sides of the middle part 91. The sliding parts 92 are slidably mounted on the middle part 91. Two pressing rollers 52 are provided one-to-one with the two sliding parts 92 and are connected to the sliding parts 92. An elastic member 93 is provided between the sliding part 92 and the middle part 91. The elastic member 93 is connected to both the middle part 91 and the sliding part 92. The elastic member 93 is a tension spring.

[0062] Under the action of gravity of the pressing roller 52, the tension spring is always in a stretched state. When the pressing roller 52 presses the fabric into the dyeing tank, the tension spring is still in a stretched state. While pressing the fabric, the pressing roller 52 keeps the fabric in a taut state. When the fabric is alternately wound up, the force on the tension spring changes according to the different tension of the fabric, so as to control the tension of the fabric within a specified range and ensure the dyeing effect of the fabric.

[0063] Reference Figure 2 , Figure 3 , Figure 4Support plate 11 is arranged in the barrel 1, the flat roller 12 is rotatably arranged on the support plate 11, the flat roller 12 is arranged above the dye tank 2, the flat roller 12 is parallel to the pressing roller 52, and the flat roller 12 is located between the two pressing rollers 52. Two groups of spiral strips 14 with opposite spiral directions are arranged on the flat roller 12. In addition, the tensioning motor 13 is arranged on the support plate 11, and the output shaft of the tensioning motor 13 is provided with a transmission belt connected with the flat roller 12, so as to drive the flat roller 12 to rotate.

[0064] After the pressing roller 52 presses the cloth, the flat roller 12 supports the middle part 91 of the cloth and makes the part located outside the dye tank 2. When the cloth moves, the tensioning motor 13 drives the flat roller 12 to rotate, and the spiral strips 14 on the surface of the flat roller 12 expand the cloth to avoid the phenomenon of wrinkles. In addition, the flat roller 12 adjusts the moving direction of the cloth, that is, the flat roller 12 also reverses, and the rotating speed of the flat roller 12 is relatively fast, so that the flat roller 12 rotates relative to the cloth to expand the cloth.

[0065] Referring to Figure 4 , the receiving plate 9 is located on the side of the support plate 11 away from the flat roller 12, and the support plate 11 is located between the two pressing rollers 52 when the pressing roller 52 presses the cloth into the dye tank 2. That is, the pressing roller 52 does not contact the support plate 11 when moving up and down, so as to avoid the phenomenon that the support plate 11 interferes with the pressing of the cloth by the pressing roller 52.

[0066] Referring to Figure 1 , Figure 2 A discharge port 16 is formed in the side of the barrel 1, and a sealing plate 17 is rotatably arranged on the barrel 1. The sealing plate 17 rotates to control the opening or closing of the discharge port 16. In addition, a sealing cylinder 18 is arranged on the barrel 1, the cylinder body of the sealing cylinder 18 is rotatably connected with the barrel 1, and the piston rod is rotatably connected with the sealing plate 17. The sealing cylinder 18 drives the sealing plate 17 to rotate, so as to control the opening or closing of the discharge port 16.

[0067] The implementation principle of the present application is that the pushing piece 51 drives the pressing roller 52 to move above the sliding plate 632, the first cylinder 61 drives the mounting sleeve 62 and the second cylinder 63 to move, until the placing rack 633 on the sliding plate 632 moves to the outside of the barrel 1, then the transfer roller 7 after winding the cloth to be dyed is placed in the placing groove 634, and the front end of the cloth is lowered to the same horizontal height as the first cloth roller 3, and then the first cylinder 61 drives the mounting sleeve 62 and the reset to drive the transfer roller 7 and the cloth to move into the barrel 1.

[0068] The second cylinder 63 drives the transfer roller 7 to move to the first cloth roller 3, and the first cloth roller 3 adsorbs the front end of the cloth through the adsorption hole 31 and rotates to roll up; when the cloth on the transfer roller 7 is about to be finished, it moves to the second cloth roller 4, and the second cloth roller 4 adsorbs the end of the cloth through the adsorption hole 31 to complete the rolling, so that the two ends of the cloth are wound on the two cloth rollers respectively. Then the pushing member 51 drives the pressing roller 52 to move down, and the cloth between the first cloth roller 3 and the second cloth roller 4 is pressed into the dyeing liquid in the dyeing tank 2, and the middle part of the cloth is lifted by the flattening roller 12. The driving motor 15 drives the first cloth roller 3 and the second cloth roller 4 to rotate, and the cloth is alternately wound, and the flattening roller 12 rotates to assist the cloth to keep unfolded. The rotation of the first cloth roller 3 and the second cloth roller 4 makes the cloth reciprocate through the dyeing liquid in the dyeing tank 2. By controlling the rotating speed of the first cloth roller 3 and the second cloth roller 4, the cloth slowly moves in the dyeing liquid, fully contacts the dyeing liquid, and realizes uniform dyeing. After dyeing, the third cylinder 631 drives the transfer roller 7 to move down and contact with the cloth on the second cloth roller 4, and the first cloth roller 3 rolls up most of the cloth, when the end of the cloth corresponds to the transfer roller 7, the adsorption hole 31 of the second cloth roller 4 blows reversely, blows the end to the transfer roller 7 and adheres, and the transfer roller 7 rotates to complete the rolling.

[0069] The whole process realizes automatic cloth feeding and discharging through the feeding assembly, fully immerses the cloth through the cooperation of the pressing assembly 5, the first cloth roller 3 and the second cloth roller 4, and improves the dyeing quality of the cloth.

[0070] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A PLA fiber plant dyeing apparatus, comprising a dyeing tank inside a cylinder and a first and a second roll of fabric located above the dyeing tank, characterized in that, It also includes a feeding assembly and a pressing assembly; The feeding assembly includes: a drive unit and a transfer roller. The output end of the drive unit is connected to the transfer roller to drive the transfer roller to move above the first roll of fabric and the second roll of fabric. The pressing assembly includes: a pusher and a pressing roller. The output end of the pusher is connected to the pressing roller to drive the pressing roller to move up and down between the first fabric roll roller and the second fabric roll roller. Both the first and second rolls of fabric are hollow and have adsorption holes on their sides. Both are connected to a vacuum pump. During feeding, the pressing roller is positioned above the transfer roller, which drives the fabric through the first roll and the second roll. The suction hole works with the first roll to wind up the front end of the fabric. When the fabric is winding near the end, the transfer roller moves to the second roll, and the suction hole works with the second roll to wind up the end. Finally, the pressing roller moves down to press the fabric into the dyeing tank. The cylinder is provided with an installation shell, and the driving components include: a first cylinder provided in the installation shell, an installation sleeve slidably assembled in the installation shell and connected to the output end of the first cylinder, and a second cylinder installed on the installation sleeve. The output end of the second cylinder is connected to the transfer roller. The first cylinder drives the transfer roller to move to the outside of the cylinder through the installation sleeve, and the second cylinder drives the transfer roller to move above the first and second fabric roll rollers. The output end of the second cylinder is equipped with a third cylinder. The side of the third cylinder is slidably fitted with a slide plate connected to the transfer roller. The output end of the third cylinder is connected to the slide plate to drive the slide plate to move up and down. The output end of the pusher is provided with a receiving plate, and the pressing roller is rotatably engaged with the receiving plate. Two pressing rollers are spaced apart on the receiving plate. The receiving plate includes a middle part and a sliding part. The middle part is connected to the pusher. There are two sliding parts, which are located on both sides of the middle part. The pressing roller is connected to the sliding part. The sliding part is mounted on the middle part in an up-and-down sliding manner. An elastic element is provided between the sliding part and the middle part to connect the two.

2. The PLA fiber plant dyeing apparatus according to claim 1, characterized in that, Multiple sets of adsorption holes are arranged around the center of the first roll of fabric, with each set of multiple adsorption holes forming a group, and the multiple adsorption holes are arranged along the center line of the first roll of fabric.

3. The PLA fiber plant dyeing apparatus according to claim 1, characterized in that, A support plate is installed inside the cylinder, and a flat roller is rotatably mounted on the support plate. The flat roller is parallel to the pressing roller and is located between the two pressing rollers. The flat roller is located above the dyeing tank. A tensioning motor connected to the flat roller is installed on the support plate. Two spiral strips with opposite spiral directions are symmetrically arranged on the flat roller.

4. The PLA fiber plant dyeing apparatus according to claim 1, characterized in that, The cylinder is equipped with drive motors that are connected to the first and second fabric rolls respectively. The drive motors drive the first and second fabric rolls to rotate synchronously to alternately wind the fabric.

5. The PLA fiber plant dyeing apparatus according to claim 3, characterized in that, The receiving plate is located on the side of the support plate away from the flat roller. When the pressing roller presses the fabric into the dyeing tank, the support plate is located between the two pressing rollers.

6. The PLA fiber plant dyeing apparatus according to claim 1, characterized in that, The slide is equipped with a placement rack, which has a placement slot for placing the transfer roller. A limiting wheel is rotatably mounted on the placement rack to abut against the side of the transfer roller.

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