A pigment recovery device for a rotary screen printing machine

Abstract

This application discloses a pigment recovery device for a rotary screen printing machine, relating to the field of rotary screen printing. It includes a support base, on which a rotary screen printing cylinder is rotatably connected. A feeding pipe is installed inside the rotary screen printing cylinder, and a printing squeegee is fixed to the feeding pipe. A recovery bin is installed at one end of the rotary screen printing cylinder. A guide plate is fixed to the support base, corresponding to the recovery bin. A filter plate is installed inside the recovery bin, and a shaking mechanism is installed between the filter plate and the recovery bin. A recovery mechanism is installed between the feeding pipe and the rotary screen printing cylinder. The recovery mechanism allows the pigment to re-enter the feeding pipe and then flow from the feeding pipe into the recovery bin, thereby facilitating efficient and rapid recovery of the pigment within the rotary screen printing cylinder and reducing pigment waste.

Description

Technical Field

[0001] This application relates to the field of rotary screen printing, and in particular to a pigment recovery device for a rotary screen printing machine. Background Technology

[0002] Rotary screen printing machines are widely used in the textile printing industry. They use a rotary screen printing cylinder to evenly print color paste onto fabrics, achieving the printing of various patterns. This equipment is adopted by many textile companies due to its high efficiency and high-quality printing effect, and is one of the essential pieces of equipment in modern textile printing production.

[0003] One of the core components of a rotary screen printing machine is the rotary screen printing cylinder, which usually has a feeding pipe inside to transport the ink paste to the printing squeegee. The printing squeegee is fixed on the feeding pipe. When the rotary screen printing cylinder rotates, the printing squeegee evenly spreads the ink paste onto the inner wall of the rotary screen printing cylinder, thereby realizing the printing process. During the printing process, a certain amount of ink paste will remain on the inner wall of the rotary screen printing cylinder. If it is not recycled in time, it will not only waste ink paste, but may also affect the subsequent printing quality.

[0004] Existing methods for pigment recycling typically involve tilting the rotary screen printing cylinder, allowing the pigment inside to flow along the inner wall of the cylinder to one end under the influence of gravity. Then, a suction device is used to remove the pigment for recycling. While this method can recover pigment to some extent, the complex structure of the inner wall of the rotary screen printing cylinder results in the pigment adhering to the cylinder and incomplete recycling, with some pigment remaining on the inner wall. Utility Model Content

[0005] The purpose of this application is to solve the problem mentioned in the background art that the complex structure of the inner wall of the rotary screen printing cylinder causes the pigment paste to adhere to the inner wall of the rotary screen printing cylinder and not be completely recovered, leaving some pigment paste residue on the inner wall. This application provides a pigment paste recovery device for a rotary screen printing machine.

[0006] To achieve the above objectives, this application specifically adopts the following technical solution:

[0007] A pigment recovery device for a rotary screen printing machine includes a support base, a rotary screen printing cylinder rotatably connected to the support base, a feeding pipe inside the rotary screen printing cylinder, a printing squeegee fixed on the feeding pipe, a recovery bin at one end of the rotary screen printing cylinder, a guide plate fixed on the support base, the guide plate corresponding to the recovery bin, a filter plate inside the recovery bin, a shaking mechanism between the filter plate and the recovery bin, and a recovery mechanism between the feeding pipe and the rotary screen printing cylinder.

[0008] By adopting the above technical solution, the pigment paste is re-entered into the feeding tube using a recycling mechanism, and then enters the recycling bin from the feeding tube. This allows for efficient and quick recycling of the pigment paste in the rotary screen printing cylinder, reducing pigment paste waste.

[0009] Furthermore, the recycling mechanism includes a recycling plate fixed on the feeding pipe, the recycling plate having a plurality of evenly distributed recycling holes that penetrate the feeding pipe, a recycling pipe fixed to one end of the feeding pipe, a suction pump fixed to the recycling pipe, a lifting assembly between the feeding pipe and the support base, and a rotating assembly at one end of the feeding pipe.

[0010] By adopting the above technical solution, the suction pump generates suction in the feeding pipe, causing the recovery plate to press against the inner wall of the rotary screen printing cylinder. As the rotary screen printing cylinder rotates, the recovery plate scrapes off the ink. The suction pump then allows the ink to enter the feeding pipe through the recovery hole and then exit through the recovery pipe. This enables efficient and quick recovery of the ink in the rotary screen printing cylinder, reducing ink waste.

[0011] Furthermore, the lifting assembly includes two hydraulic lifting rods symmetrically fixed on the support base. The telescopic end of the hydraulic lifting rod is fixed with a lifting seat, and a lifting collar is fixed on the lifting seat. The two ends of the feeding pipe are rotatably connected to the corresponding lifting collar.

[0012] By adopting the above technical solution, the hydraulic lifting rod is used to drive the feeding pipe to rise, which makes it easy to separate the printing squeegee on the feeding pipe from the rotary screen printing cylinder, and makes it easy for the feeding pipe to drive the printing squeegee to rotate.

[0013] Furthermore, the rotating assembly includes a rotating gear disposed on one end of the feeding pipe near the recovery pipe, and a rotating gear ring is fixedly fitted on the feeding pipe, the rotating gear meshing with the rotating gear ring.

[0014] By adopting the above technical solution, the rotating gear drives the rotating gear ring to rotate, and the rotating gear ring drives the feeding pipe, so that the feeding pipe can rotate under the support of two lifting collars.

[0015] Furthermore, a rotating motor is provided on one side of the rotating gear ring, the output end of the rotating motor is fixedly connected to the rotating gear, a connecting seat is fixedly fixed on the rotating motor, and the connecting seat is fixedly connected to the lifting seat.

[0016] By adopting the above technical solution, the rotating motor of the connecting seat Hassan is started, and the rotating motor drives the rotating gear to rotate, which in turn makes it easy for the rotating gear to drive the rotating gear ring to rotate.

[0017] Furthermore, a number of uniformly distributed one-way valves are fixed on the recycling plate, and the one-way valves correspond to the recycling holes. A number of one-way valves are fixed on the feeding pipe, and the one-way valves correspond to the discharge ports of the feeding pipe.

[0018] By adopting the above technical solution, one-way valve one and one-way valve two are used to restrict the recovery hole on the recovery plate and the discharge hole of the feeding pipe in one direction, thereby reducing the possibility of pigment slurry leaving the recovery hole and entering the discharge hole of the feeding pipe.

[0019] Furthermore, a solenoid valve is fixed at the end of the feeding pipe near the recovery pipe, and a solenoid valve is fixed at the end of the feeding pipe away from the solenoid valve.

[0020] By adopting the above technical solution, when feeding material through the feeding pipe, solenoid valve one blocks one end of the feeding pipe, and when recovering the pigment, solenoid valve two blocks the other end of the feeding pipe. This reduces the amount of pigment entering the recovery pipe from the feeding pipe during feeding and reduces the continuous entry of pigment into the feeding pipe during recovery.

[0021] Furthermore, the shaking mechanism includes a shaking rod fixed to the filter plate, a limit rod fixed inside the recycling bin, the shaking rod passing through the limit rod and slidably connected to the limit rod, a support frame fixed on the recycling bin, a shaking motor fixed on the support frame, a shaking disk fixed at the output end of the shaking motor, a connecting rod eccentrically rotatably connected to the shaking disk, and the end of the connecting rod away from the shaking disk being rotatably connected to the shaking rod.

[0022] By adopting the above technical solution, the vibrating motor drives the vibrating disc to rotate, the vibrating disc drives the connecting rod, and the connecting rod drives the vibrating rod, allowing the vibrating rod to move back and forth under the restriction of the limit rod, thereby enabling the color paste to pass through the filter plate quickly and improving the filtration efficiency of the color paste.

[0023] In summary, this application includes at least one of the following beneficial effects;

[0024] 1. This application achieves efficient and rapid recovery of pigments from the rotary screen printing cylinder by using the telescopic end of a hydraulic lifting rod to raise the lifting seat. The lifting seat then drives a lifting collar, which in turn drives a feeding pipe. The feeding pipe moves the printing squeegee away from the inner wall of the rotary screen printing cylinder. A rotating motor drives a rotating gear, which in turn drives a rotating gear ring, causing the feeding pipe to rotate and the recovery plate to rotate. This causes the recovery plate and the printing squeegee to switch positions. Then, the hydraulic lifting rod lowers the lifting seat, causing the recovery plate to press against the inner wall of the rotary screen printing cylinder. A suction pump is then activated, creating suction in the feeding pipe. This suction force draws the pigment from the recovery hole of the recovery plate into the feeding pipe. Simultaneously, the rotary screen printing cylinder rotates, allowing the recovery plate to scrape away the pigments from the inner wall of the cylinder and suck them into the feeding pipe. From there, the pigments enter the recovery pipe and then the recovery bin. This method facilitates efficient and rapid recovery of pigments from the rotary screen printing cylinder, reducing pigment residue on the inner wall and minimizing waste due to incomplete pigment recovery.

[0025] 2. In this application, when the pigment enters the recycling tank, it is filtered by the filter plate. During the filtration process, the shaking motor is started, which drives the shaking disc to rotate. The shaking disc drives the connecting rod, which in turn drives the shaking rod. The shaking rod moves back and forth under the restriction of the limit rod, and the shaking rod drives the filter plate to move back and forth. With the rapid rotation of the shaking disc, the filter plate shakes up and down, allowing the pigment to pass through the filter plate quickly. This achieves the purpose of improving the filtration efficiency of the pigment by enabling the pigment to pass through the filter plate quickly. Attached Figure Description

[0026] Figure 1 This is a first three-dimensional structural schematic diagram of the pigment recovery device of the rotary screen printing machine in this application;

[0027] Figure 2 This is a schematic diagram of the first internal structure of the pigment recovery device of the rotary screen printing machine in this application;

[0028] Figure 3 This is a schematic diagram of the second internal structure of the pigment recovery device of the rotary screen printing machine in this application;

[0029] Figure 4 This application Figure 2 Enlarged view of point A in the middle;

[0030] Figure 5 This application Figure 3 Enlarged view of point B in the middle;

[0031] Figure 6 This application Figure 2 Enlarged diagram of point C in the middle.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Support base; 2. Rotary screen printing cylinder; 3. Feeding pipe; 4. Printing squeegee; 5. Recycling bin; 6. Recycling mechanism; 61. Recycling plate; 62. Recycling hole; 63. Suction pump; 64. Lifting assembly; 641. Hydraulic lifting rod; 642. Lifting seat; 643. Lifting collar; 65. Rotating assembly; 651. Rotating gear ring; 652. Rotating gear; 653. Connecting seat; 654. Rotating motor; 66. One-way valve I; 67. One-way valve II; 68. Recycling pipe; 7. Vibration mechanism; 71. Vibration rod; 72. Limiting rod; 73. Support frame; 74. Vibration motor; 75. Vibration disc; 76. Connecting rod; 8. Filter plate; 9. Solenoid valve I; 10. Solenoid valve II. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0035] This application discloses a pigment recovery device for a rotary screen printing machine.

[0036] Reference Figure 1 , Figure 2 and Figure 3 A pigment recovery device for a rotary screen printing machine includes a support base 1, a rotary screen printing cylinder 2 rotatably connected to the support base 1, a feeding pipe 3 inside the rotary screen printing cylinder 2, a printing scraper 4 fixed on the feeding pipe 3, a recovery bin 5 at one end of the rotary screen printing cylinder 2, a guide plate fixed on the support base 1, the guide plate corresponding to the recovery bin 5, a filter plate 8 inside the recovery bin 5, a shaking mechanism 7 between the filter plate 8 and the recovery bin 5, and a recovery mechanism 6 between the feeding pipe 3 and the rotary screen printing cylinder 2.

[0037] After the rotary screen printing machine finishes printing, the ink paste in the rotary screen printing cylinder 2 is recycled. The recycling mechanism 6 drives the printing squeegee 4 to rotate, causing the printing squeegee 4 to flip up and the recycling mechanism 6 to face the inner wall of the rotary screen printing cylinder 2. The recycling mechanism 6 allows the ink paste in the rotary screen printing cylinder 2 to re-enter the feeding pipe 3, and then flows from the feeding pipe 3 to the recycling tank 5. The ink paste passes through the filter plate 8 of the recycling tank 5 and is stored in the recycling tank 5. When the ink paste passes through the filter plate 8, the shaking mechanism 7 drives the filter plate 8 to shake, allowing the ink paste to pass through the filter plate 8 more quickly, thus completing the recycling of the ink paste in the rotary screen printing cylinder 2. By using the recycling mechanism 6 to allow the ink paste to re-enter the feeding pipe 3 and then from the feeding pipe 3 into the recycling tank 5, the ink paste in the rotary screen printing cylinder 2 can be recycled efficiently and quickly, reducing the residue of ink paste on the inner wall of the rotary screen printing cylinder 2 and reducing incomplete ink paste recycling and waste.

[0038] Reference Figure 1 , Figure 2 and Figure 4The recycling mechanism 6 includes a recycling plate 61 fixed on the feeding pipe 3. The recycling plate 61 has several evenly distributed recycling holes 62. The recycling holes 62 pass through the feeding pipe 3. A recycling pipe 68 is fixed to one end of the feeding pipe 3. A suction pump 63 is fixed to the recycling pipe 68. A lifting component 64 is provided between the feeding pipe 3 and the support base 1. A rotating component 65 is provided to one end of the feeding pipe 3.

[0039] In addition, the lifting assembly 64 includes two hydraulic lifting rods 641 symmetrically fixed on the support base 1. The telescopic ends of the hydraulic lifting rods 641 are fixed with lifting seats 642. Lifting collars 643 are fixed on the lifting seats 642. The two ends of the feeding pipe 3 are rotatably connected to the corresponding lifting collars 643.

[0040] Furthermore, the rotating assembly 65 includes a rotating gear 652 disposed on one end of the feeding pipe 3 near the recovery pipe 68, and a rotating gear ring 651 is fixedly sleeved on the feeding pipe 3, with the rotating gear 652 meshing with the rotating gear ring 651.

[0041] Furthermore, a rotating motor 654 is provided on one side of the rotating gear ring 651. The output end of the rotating motor 654 is fixedly connected to the rotating gear 652. A connecting seat 653 is fixed on the rotating motor 654, and the connecting seat 653 is fixedly connected to the lifting seat 642.

[0042] First, synchronize the two hydraulic lifting rods 641. The telescopic ends of the hydraulic lifting rods 641 raise the lifting seat 642, which in turn raises the lifting collar 643. The lifting collar 643 then moves the feeding pipe 3, causing the printing squeegee 4 to move away from the inner wall of the rotary screen printing cylinder 2. The rotating motor 654 drives the rotating gear 652, which in turn drives the rotating gear ring 651, causing the feeding pipe 3 to rotate the recovery plate 61. This causes the recovery plate 61 and the printing squeegee 4 to switch positions. Then, the hydraulic lifting rods 641 lower the lifting seat 642, causing the recovery plate 61 to contact the inner wall of the rotary screen printing cylinder 2. Start the suction pump 63, which creates suction in the feeding pipe 3, allowing the ink to enter the feeding pipe 3 from the recovery hole 62 of the recovery plate 61. Simultaneously, the rotary screen printing cylinder... 2. Rotate the cylinder to allow the recovery plate 61 to scrape off the ink from the inner wall of the rotary screen printing cylinder 2 and suck it into the feeding pipe 3. From the feeding pipe 3, it enters the recovery pipe 68, and from the recovery pipe 68, it enters the recovery tank 5, completing the collection of ink. Then, repeat the above operation, raising the feeding pipe 3 to change the position of the recovery plate 61 and the printing squeegee 4. Then, the printing squeegee 4 comes into contact with the rotary screen printing cylinder 2. When the rotary screen printing cylinder 2 rotates, the recovery plate 61 on the feeding pipe 3 comes into contact with the inner wall of the rotary screen printing cylinder 2, allowing the ink to be scraped off by the recovery plate 61. Then, the suction pump 63 is used to pump the ink back into the feeding pipe 3, which can facilitate efficient and quick recovery of ink in the rotary screen printing cylinder 2, reduce ink residue on the inner wall of the rotary screen printing cylinder 2, and reduce incomplete ink recovery and waste.

[0043] Reference Figure 1 , Figure 2 and Figure 5 Several one-way valves 66 are fixed on the recycling plate 61, and the one-way valves 66 correspond to the recycling holes 62. Several one-way valves 67 are fixed on the feeding pipe 3, and the one-way valves 67 correspond to the discharge ports of the feeding pipe 3.

[0044] In addition, a solenoid valve 9 is fixed at the end of the feeding pipe 3 near the recovery pipe 68, and a solenoid valve 10 is fixed at the end of the feeding pipe 3 away from the solenoid valve 9.

[0045] When the ink paste is fed into the rotary screen printing cylinder 2 via the feeding pipe 3, solenoid valve 2 10 is opened and solenoid valve 1 9 is closed. Check valve 1 66 blocks the recovery hole 62 on the recovery plate 61, allowing the ink paste to enter the rotary screen printing cylinder 2 through check valve 2 67. Then, the ink paste is pumped through the recovery hole 62 on the recovery plate 61. Solenoid valve 1 9 is opened and solenoid valve 2 10 is closed. The suction generated by the pump allows the ink paste to pass through check valve 1 66 in the recovery hole 62. Check valve 2 67 blocks the feeding hole on the feeding pipe 3. By utilizing the cooperation between check valve 1 66, check valve 2 67, solenoid valve 1 9 and solenoid valve 2 10, the possibility of ink paste escaping from the recovery hole 62 and directly entering the recovery pipe 68 can be reduced during feeding. During ink paste recovery, sufficient suction can be generated in the feeding pipe 3 to reduce the possibility of air entering through the feeding hole of the feeding pipe 3.

[0046] Reference Figure 1 , Figure 2 and Figure 6 The shaking mechanism 7 includes a shaking rod 71 fixed on the filter plate 8, a limit rod 72 fixed inside the recycling bin 5, the shaking rod 71 passing through the limit rod 72 and being slidably connected to the limit rod 72, a support frame 73 fixed on the recycling bin 5, a shaking motor 74 fixed on the support frame 73, a shaking disk 75 fixed at the output end of the shaking motor 74, a connecting rod 76 eccentrically rotatably connected to the shaking disk 75, and the end of the connecting rod 76 away from the shaking disk 75 being rotatably connected to the shaking rod 71.

[0047] When the pigment enters the recycling tank 5, it is filtered by the filter plate 8. During the filtration process, the shaking motor 74 is started, which drives the shaking disk 75 to rotate. The shaking disk 75 drives the connecting rod 76, which in turn drives the shaking rod 71. The shaking rod 71 moves back and forth under the restriction of the limit rod 72. The shaking rod 71 drives the filter plate 8 to move back and forth. With the rapid rotation of the shaking disk 75, the filter plate 8 shakes up and down, allowing the pigment to pass through the filter plate 8 quickly. By using the shaking rod 71 to drive the filter plate 8 to shake up and down, the pigment can pass through the filter plate 8 quickly, thus improving the filtration efficiency of the pigment.

[0048] Working Principle: After the rotary screen printing machine finishes printing, solenoid valve 9 is opened and solenoid valve 10 is closed. The suction force generated by the suction pump keeps the two hydraulic lifting rods 641 synchronized, causing the extension end of the hydraulic lifting rods 641 to lift the lifting seat 642. The lifting seat 642 drives the lifting collar 643, which in turn drives the feeding pipe 3. The feeding pipe 3 moves the printing squeegee 4 away from the inner wall of the rotary screen printing cylinder 2. The rotating motor 654 drives the rotating gear 652, which in turn drives the rotating gear ring 651, causing the feeding pipe 3 to rotate the recovery plate 61. This causes the recovery plate 61 and the printing squeegee 4 to switch positions. Then, the hydraulic lifting rods 641 drive the lifting seat 642 to fall, causing the recovery plate 61 to contact the inner wall of the rotary screen printing cylinder 2. The suction pump 63 is then activated, using it to generate suction in the feeding pipe 3, allowing the ink to flow from the recovery hole 62. One-way valve 66 passes through, and one-way valve 67 blocks the feeding hole on the feeding pipe 3, allowing the pigment paste to enter the feeding pipe 3 through the recovery hole 62 of the recovery plate 61. At the same time, the rotary screen printing cylinder 2 rotates, causing the recovery plate 61 to scrape off the pigment paste from the inner wall of the rotary screen printing cylinder 2 and suck it into the feeding pipe 3. From the feeding pipe 3, it enters the recovery pipe 68, and from the recovery pipe 68, it enters the recovery tank 5. The pigment paste is filtered by the filter plate 8. During the filtration process, the shaking motor 74 is started, causing the shaking motor 74 to drive the shaking disc 75 to rotate. The shaking disc 75 drives the connecting rod 76, and the connecting rod 76 drives the shaking rod 71, causing the shaking rod 71 to move back and forth under the restriction of the limit rod 72. The shaking rod 71 drives the filter plate 8 to move back and forth. Under the rapid rotation of the shaking disc 75, the filter plate 8 shakes up and down, allowing the pigment paste to be quickly filtered by the filter plate 8 and enter the recovery tank 5.

Claims

1. A color paste recovery device for rotary screen printing machines, comprising a support seat (1), characterized in that: A rotary screen printing cylinder (2) is rotatably connected to the support base (1). A feeding pipe (3) is provided inside the rotary screen printing cylinder (2). A printing scraper (4) is fixed on the feeding pipe (3). A recycling bin (5) is provided at one end of the rotary screen printing cylinder (2). A guide plate is fixed on the support base (1). The guide plate corresponds to the recycling bin (5). A filter plate (8) is provided inside the recycling bin (5). A shaking mechanism (7) is provided between the filter plate (8) and the recycling bin (5). A recycling mechanism (6) is provided between the feeding pipe (3) and the rotary screen printing cylinder (2).

2. A colour paste recovery device for an rotary screen printing machine according to claim 1, characterised in that: The recycling mechanism (6) includes a recycling plate (61) fixed on the feeding pipe (3), and a plurality of evenly distributed recycling holes (62) are provided on the recycling plate (61). The recycling holes (62) penetrate the feeding pipe (3). A recycling pipe (68) is fixed at one end of the feeding pipe (3). A suction pump (63) is fixed on the recycling pipe (68). A lifting assembly (64) is provided between the feeding pipe (3) and the support base (1). A rotating assembly (65) is provided at one end of the feeding pipe (3).

3. A colour paste recovery device for an rotary screen printing machine according to claim 2, characterised in that: The lifting assembly (64) includes two hydraulic lifting rods (641) symmetrically fixed on the support base (1). The extension end of the hydraulic lifting rod (641) is fixed with a lifting seat (642). The lifting seat (642) is fixed with a lifting collar (643). The two ends of the feeding pipe (3) are rotatably connected to the corresponding lifting collar (643).

4. A colour paste recovery device for an rotary screen printing machine according to claim 3, characterised in that: The rotating assembly (65) includes a rotating gear (652) disposed on one end of the feeding pipe (3) near the recovery pipe (68), and a rotating gear ring (651) is fixedly sleeved on the feeding pipe (3), and the rotating gear (652) meshes with the rotating gear ring (651).

5. A colour paste recovery device for an rotary screen printing machine according to claim 4, characterised in that: A rotating motor (654) is provided on one side of the rotating gear ring (651). The output end of the rotating motor (654) is fixedly connected to the rotating gear (652). A connecting seat (653) is fixed on the rotating motor (654). The connecting seat (653) is fixedly connected to the lifting seat (642).

6. A color paste recovery device for an rotary screen printing machine according to claim 2, characterized in that: The recycling plate (61) is fixed with several uniformly distributed one-way valves (66), which correspond to the recycling hole (62). The feeding pipe (3) is fixed with several one-way valves (67), which correspond to the discharge port of the feeding pipe (3).

7. A color paste recovery device for an rotary screen printing machine according to claim 2, characterized in that: A solenoid valve 1 (9) is fixed at one end of the feeding pipe (3) near the recovery pipe (68), and a solenoid valve 2 (10) is fixed at the other end of the feeding pipe (3) away from the solenoid valve 1 (9).

8. A color paste recovery device for an rotary screen printing machine according to claim 1, characterized in that: The shaking mechanism (7) includes a shaking rod (71) fixed on the filter plate (8), a limit rod (72) fixed inside the recycling bin (5), the shaking rod (71) passes through the limit rod (72) and is slidably connected to the limit rod (72), a support frame (73) is fixed on the recycling bin (5), a shaking motor (74) is fixed on the support frame (73), a shaking disk (75) is fixed at the output end of the shaking motor (74), a connecting rod (76) is eccentrically rotatably connected to the shaking disk (75), and the end of the connecting rod (76) away from the shaking disk (75) is rotatably connected to the shaking rod (71).

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