Plastic woven bag surface pattern printing device

Abstract

The invention discloses a plastic woven bag surface pattern printing device, and particularly relates to the technical field of woven bags, the plastic woven bag surface pattern printing device comprises a transmission belt, a printing assembly is arranged at the upper end of the transmission belt, transmission rollers are arranged on the left side and the right side of the transmission belt, and a transmission assembly is arranged on the rear side of the printing assembly; a swing assembly is arranged on the right side of the transmission assembly, a moving assembly is arranged on the front side of the swing assembly, and a lifting assembly is arranged on the right side of the moving assembly. According to the plastic woven bag surface pattern printing device, through cooperation of all the assemblies, seamless connection of printing work and positioning action is achieved, the single-time circulation time is shortened, the continuity of the printing work is guaranteed, all the assemblies are tightly connected, a woven bag to be printed can be continuously conveyed to a proper position, and the printing efficiency is improved. And printing interruption caused by the problems of material supply, position deviation and the like is avoided, the large-scale production requirement is met, and the overall printing efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of woven bags, and in particular to a device for printing patterns on the surface of plastic woven bags. Background Art

[0002] Plastic woven bags have been widely used in agriculture, chemical industry, construction, logistics and many other fields due to their high strength, low cost and durability. With the continuous development of the global economy and the increasing frequency of trade activities, the market demand for plastic woven bags has shown a steady upward trend. At the same time, the market's requirements for plastic woven bags are no longer limited to their packaging functions, and their appearance design and brand logo are becoming more and more concerned, which makes the surface pattern printing of plastic woven bags a crucial link in the production process.

[0003] The traditional method of printing before bagging is to print patterns before the woven fabric is made into bags. However, when the woven fabric is spliced ​​into bags, the patterns are easily discontinuous and misaligned at the splicing points, which greatly reduces the appearance quality of the entire bag. Printing after bagging can effectively avoid many disadvantages of printing before bagging, and has gradually become the focus of industry attention.

[0004] Chinese Patent Announcement No. CN220615200U discloses a surface pattern printing device for the production of plastic woven bags, including an operating table, a groove is provided on the front side of the operating table, a T-shaped plate is slidably provided in the groove, there are two T-shaped plates, and one end extending out of the groove is connected to a vertical plate, a rectangular groove is provided on the front side of the vertical plate, a threaded rod is rotatably provided at the bottom of the rectangular groove, a rectangular block is rotatably sleeved on the side wall of the threaded rod, one of the rectangular blocks is connected to a pressing plate, and the other rectangular block is connected to a spreading plate, an L-shaped plate is connected to the upper rear side of the operating table, an electric telescopic rod is connected to the lower side of the horizontal side of the L-shaped plate, a connecting block is connected to the lower end of the electric telescopic rod, a printing mold is sleeved below the connecting block, a limiting plate is connected above the printing mold, and a horizontal rod is inserted between the connecting block and the limiting plate. This patent avoids wrinkles in woven bags;

[0005] However, in actual use of the above device, the consistency of printing work and the overall printing efficiency are low, which cannot meet the needs of large-scale production. Summary of the invention

[0006] The main purpose of the present invention is to provide a device for printing patterns on the surface of a plastic woven bag, which can effectively solve the problems of continuity of printing work and low overall printing efficiency.

[0007] To achieve the above object, the technical solution adopted by the present invention is:

[0008] A device for printing patterns on the surface of a plastic woven bag comprises a transmission belt, a printing assembly is arranged at the upper end of the transmission belt, transmission rollers are arranged on the left and right sides of the transmission belt, a transmission assembly is arranged on the rear side of the printing assembly, a swing assembly is arranged on the right side of the transmission assembly, a removal assembly is arranged on the front side of the swing assembly, and a lifting assembly is arranged on the right side of the removal assembly.

[0009] Preferably, the printing assembly includes a lifting seat fixedly connected to the upper end of the transmission belt, the front side of the lifting seat is slidably connected to a support frame, the front side of the support frame is installed with a printing platform, the front side of the support frame is slidably connected to a printing press, and the printing press is slidably connected to the upper end of the printing platform.

[0010] Preferably, the transmission assembly includes a connecting rod fixedly connected to the rear end of the support frame, the right end of the connecting rod is fixedly connected to a rack, the outer surface of the rack is meshingly connected to gear one, the inner surface of the gear one is rotatably connected to a ratchet, the front end of the ratchet is fixedly connected to a rotating shaft one, the front end of the rotating shaft one is fixedly connected to a pulley transmission group one, the side of the pulley transmission group one away from the rotating shaft one is fixedly connected to a rotating shaft two, and the front end of the rotating shaft two is fixedly connected to the transmission roller on the right side.

[0011] Preferably, the swing assembly includes a support seat fixedly connected to the lower side of the rear end of the transmission belt, the rear end of the ratchet wheel is fixedly connected to a rotating roller, the rear end of the rotating roller is fixedly connected to a gear three, the rear side of the gear three is fixedly connected to a plurality of limit column twos, the outer surface of the rotating roller is rotatably connected to the support seat, the outer surface of the gear three is meshingly connected to the gear two, the front end of the gear two is rotatably connected to the support seat, the rear side of the gear two is fixedly connected to a plurality of limit column ones, the outer surfaces of the limit column one and the limit column two are slidably connected to a rotating disk, the outer surface of the rotating disk is fixedly connected to a rotating shaft three, and the front end of the rotating shaft three is rotatably connected to the support seat.

[0012] Preferably, the outer surface of the rotating shaft three is fixedly connected to the pulley transmission group two, the end of the pulley transmission group two away from the rotating shaft three is fixedly connected to the rotating shaft four, the outer surface of the rotating shaft four is rotatably connected to a fixed seat, the lower end of the fixed seat is fixedly connected to the transmission belt, the front end of the rotating shaft four is fixedly connected to a swing arm, the side of the swing arm away from the rotating shaft four is rotatably connected to a connecting shaft, the front side of the fixed seat is fixedly connected to a connecting seat, the inner surface of the connecting seat is fixedly connected to a limiting rod one, the outer surface of the limiting rod one is slidably connected to a sliding seat, the upper end of the sliding seat is provided with a circular hole, the inner surface of the circular hole is slidably connected to the outer surface of the connecting shaft.

[0013] Preferably, the removal assembly includes a telescopic rod slidably connected to the inner surface of the connecting shaft, the lower end of the telescopic rod is fixedly connected to the fixed rod, the upper end of the fixed rod is fixedly connected to a spring 1, the upper end of the spring 1 is fixedly connected to the lower end of the sliding seat, the lower end of the spring 1 is fixedly connected to a connecting plate, and the lower end of the connecting plate is fixedly connected to a plurality of air intake ports.

[0014] Preferably, a pressure plate is fixedly connected to the outer surface of the connecting shaft, an airbag is provided on the upper end surface of the sliding seat, the lower surface of the pressure plate is fixedly connected to the airbag, a hose is fixedly connected to the lower end of the airbag, and the lower end of the hose is fixedly connected to the connecting plate.

[0015] Preferably, the lifting component includes a supporting platform fixedly connected to the right end of the transmission belt, the upper end of the supporting platform is rotatably connected to a rotating handle, the inner surface of the rotating handle is fixedly connected to a threaded column, the outer surface of the threaded column is threadedly connected to a lifting platform, the front side of the inner surface of the lifting platform is slidably connected to a limiting rod 2, and the lower end of the limiting rod 2 is fixedly connected to the supporting platform.

[0016] Preferably, the upper end of the threaded column is fixedly connected to a rotating block, the outer surface of the swing arm is fixedly connected to a connecting column, the end of the connecting column away from the swing arm is fixedly connected to a sliding bead, an arc groove is provided on the outer surface of the rotating block, and the outer surface of the sliding bead is slidably connected to the arc groove.

[0017] Preferably, the lower part of the inner surface of the vertical part of the arc groove is rotatably connected with a toggle block, the lower part of the inner surface of the vertical part of the arc groove is fixedly connected with a stopper, the lower end of the stopper is fixedly connected with a spring 2, and the lower end of the spring 2 is fixedly connected to the toggle block.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention realizes seamless connection between printing and positioning actions through the coordination between various components, shortens the single cycle time, and ensures the continuity of printing. The components are closely connected and can continuously transport the woven bags to be printed to the appropriate position, avoiding printing interruptions due to problems such as material supply and position deviation, meeting the needs of large-scale production and improving the overall printing efficiency.

[0020] 2. The present invention cooperates with the printing component and the transmission component. When the printing component rises as a whole, the transmission belt is driven to move forward a specific distance, ensuring that the plastic woven bag moves to the bottom of the printing press. Then, when the printing press descends, the transmission belt remains stationary, so that the ink scraping action is completed when the plastic woven bag is stationary, avoiding the problem of shaking or displacement of the woven bag caused by the movement of the transmission belt during the printing process. The overall printing and positioning actions are seamlessly connected, the single cycle time is shortened, and the continuous operation efficiency is high.

[0021] 3. The present invention achieves coordination between the lifting and lowering of the printing assembly and the transmission assembly, the swing assembly, the removal assembly and the lifting assembly, so that the printing machine drives the swing arm to swing left and right during the lifting process, allowing the air intake port to contact the accumulated woven bags, and through the ingenious coordination of air intake and exhalation, the woven bags are placed on the transmission belt in turn and smoothly, providing a continuous and stable supply of woven bags to be printed for the printing work, and the lifting assembly can compensate in real time for the height difference caused by the gradual reduction of woven bags, ensuring that the printing work is carried out uninterruptedly, thereby improving the printing work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the structure of the printing assembly of the present invention;

[0024] Figure 3 It is a partial structural schematic diagram of the transmission assembly of the present invention;

[0025] Figure 4 It is a partial structural schematic diagram of the swing assembly of the present invention;

[0026] Figure 5 For the present invention Figure 4 A is an enlarged structural diagram;

[0027] Figure 6 It is a schematic diagram of the structure of the removal component of the present invention;

[0028] Figure 7 It is a structural schematic diagram of the rising assembly of the present invention;

[0029] Figure 8 It is a structural schematic diagram of the rotating block of the present invention;

[0030] Fig. 9 It is a structural schematic diagram of the arc groove of the present invention;

[0031] Fig.10 It is a partial structural schematic diagram of the rising component of the present invention.

[0032] In the figure: 1. transmission belt; 2. printing assembly; 21. lifting seat; 22. support frame; 23. printing platform; 24. printing press; 3. transmission assembly; 31. connecting rod; 32. rack; 33. gear one; 34. ratchet; 35. rotating shaft one; 36. pulley transmission group one; 37. rotating shaft two; 4. swing assembly; 41. support seat; 42. gear two; 421. limit column one; 43. gear three; 431. limit column two; 432. rotating roller; 44. rotating disk; 45. rotating shaft three; 46. pulley transmission group two; 47. rotating shaft four; 48. fixed Seat; 49, swing arm; 410, connecting shaft; 411, connecting seat; 412, limit rod one; 413, sliding seat; 5, removal assembly; 51, telescopic rod; 52, fixing rod; 53, spring one; 54, connecting plate; 55, air inlet; 56, pressure plate; 57, air bag; 58, hose; 6, rising assembly; 61, bearing platform; 62, rotating handle; 63, threaded column; 64, lifting platform; 65, limit rod two; 66, rotating block; 661, arc groove; 663, toggle block; 664, stopper; 665, spring two; 67, connecting column; 68, sliding bead. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0034] Embodiment 1, as Figure 1 As shown, a device for printing patterns on the surface of a plastic woven bag includes a transmission belt 1. Transmission rollers are arranged on the left and right sides of the transmission belt 1. A printing component 2 is arranged on the upper end of the transmission belt 1. A transmission component 3 is arranged on the rear side of the printing component 2. A swing component 4 is arranged on the right side of the transmission component 3. A removal component 5 is arranged on the front side of the swing component 4. A lifting component 6 is arranged on the right side of the removal component 5.

[0035] Therefore, this solution achieves seamless connection between printing and positioning actions through the coordination of various components, shortens the single cycle time, and ensures the continuity of printing work. The components are closely connected and can continuously transport the woven bags to be printed to the appropriate position, avoiding printing interruptions due to problems such as material supply and position deviation, meeting large-scale production needs and improving overall printing efficiency.

[0036] Embodiment 2: Based on Embodiment 1, this embodiment is to achieve the effect of seamless connection between printing and positioning actions.

[0037] See also Figure 1-5The printing assembly 2 includes a lifting seat 21 fixedly connected to the upper end of the transmission belt 1, a support frame 22 is slidably connected to the front side of the lifting seat 21, a printing platform 23 is installed on the front side of the support frame 22, a printing machine 24 is slidably connected to the front side of the support frame 22, and the printing machine 24 is slidably connected to the upper end of the printing platform 23.

[0038] Specifically, the above-mentioned printing machine 24 is the existing technology, wherein the printing platform 23 is installed on the support frame 22, and the printing machine 24 includes key components such as a screen printing plate and a scraper. When printing, the lifting seat 21 can adjust the height of the support frame 22 and the printing platform 23 as needed to maintain a suitable distance and pressure between the printing platform 23 and the printing machine 24. The scraper in the printing machine 24 squeezes the ink, and the ink passes through the screen printing plate and is transferred to the surface of the plastic woven bag placed on the lower side of the printing platform 23, thereby completing the pattern printing.

[0039] See also Figure 3-5 The transmission assembly 3 includes a connecting rod 31 fixedly connected to the rear end of the support frame 22, a rack 32 fixedly connected to the right end of the connecting rod 31, a gear 33 meshingly connected to the outer surface of the rack 32, a ratchet 34 rotatably connected to the inner surface of the gear 33, a rotating shaft 35 fixedly connected to the front end of the ratchet 34, a pulley transmission group 1 36 fixedly connected to the front end of the rotating shaft 1 35, a rotating shaft 2 37 fixedly connected to the side of the pulley transmission group 1 36 away from the rotating shaft 1 35, and a front end of the rotating shaft 2 37 fixedly connected to the right transmission roller.

[0040] Furthermore, the connecting rod 31 and the rack 32 mentioned above are raised and lowered together with the support frame 22, wherein ratchets are provided on both sides of the inner surface of the gear 33. When the rack 32 rises, it will mesh with the gear 33, driving the gear 33 to rotate counterclockwise. At this time, the ratchet will be inserted into the tooth groove of the ratchet wheel 34, pushing the ratchet wheel 34 to rotate, thereby driving the rotating shaft 35 and the pulley transmission group 36 to rotate.

[0041] When the printing platform 23 rises to the top, the gear 1 33 and the ratchet 34 rotate exactly two circles.

[0042] When the support frame 22 descends for printing, it will drive the gear 1 33 to rotate clockwise. At this time, the pawl will slide over the back of the teeth of the ratchet 34, so that the ratchet 34 remains stationary, and the rotating shaft 1 35, the pulley transmission group 1 36 and the rotating shaft 2 37 will not rotate, so that the plastic woven bag also stops, effectively reducing the interference factors that may occur during the printing process, and ensuring that the printing machine 24 operates on a stable working platform.

[0043] Furthermore, the pulley transmission group 1 36 mentioned above is composed of two pulleys of different diameters and a rack. The different diameter ratio between the two pulleys makes the rising stroke of the printing platform 23 equivalent to the stroke of the two plastic woven bags reaching the bottom of the printing platform 23.

[0044] Furthermore, when the rack 32 rises and drives the gear 1 33 and the ratchet 34 to rotate together, it will drive the rotating shaft 1 35, the pulley transmission group 1 36 and the rotating shaft 2 37 to rotate together, and the rotation speed of the rotating shaft 2 37 is greater than the rotation speed of the gear 1 33, thereby driving the transmission roller in the transmission belt 1 to rotate, so that the two plastic woven bags are driven by the transmission roller to move to the bottom of the printing platform 23.

[0045] Then, the lifting seat 21 is started to drive the support frame 22 to rise. At this time, the connecting rod 31 and the rack 32 rise together, and the rack 32 meshes with the gear 1 33, driving the gear 1 33 to rotate counterclockwise. At this time, the pawl will be inserted into the tooth groove of the ratchet 34, pushing the ratchet 34 to rotate, thereby driving the rotating shaft 1 35 and the pulley transmission group 1 36 to rotate, and the pulley transmission group 1 36 drives the rotating shaft 2 37 to rotate together with the transmission roller of the transmission belt 1, so that the transmission roller pushes the two plastic woven bags forward to the bottom of the printing platform 23.

[0046] When the printing platform 23 rises to the top, the gear 1 33 and the ratchet 34 rotate exactly two circles.

[0047] When the support frame 22 descends and drives the printing machine 24 to print, it will drive the gear 1 33 to rotate clockwise. At this time, the pawl will slide over the back of the teeth of the ratchet 34, so that the ratchet 34 remains stationary, and the rotating shaft 1 35, the pulley transmission group 1 36 and the rotating shaft 2 37 will not rotate, so that the plastic woven bag also stops, which is convenient for printing.

[0048] Therefore, in this solution, the printing component 2 and the transmission component 3 cooperate to drive the transmission belt 1 to move forward a specific distance when the printing component 2 rises as a whole, ensuring that the plastic woven bag moves to just below the printing machine 24. Then, when the printing machine 24 descends, the transmission belt 1 remains stationary, so that the ink scraping action is completed when the plastic woven bag is in a stationary state, avoiding the problem of shaking or displacement of the woven bag caused by the movement of the transmission belt 1 during the printing process. The overall printing and positioning actions are seamlessly connected, the single cycle time is shortened, and the continuous operation efficiency is high.

[0049] Embodiment 3: This embodiment is based on Embodiments 1 and 2, and is for achieving the effect of providing a continuous and stable supply of woven bags to be printed for printing work.

[0050] See also Figure 1-10The swing assembly 4 includes a support seat 41 fixedly connected to the lower side of the rear end of the transmission belt 1, a rotating roller 432 is fixedly connected to the rear end of the ratchet 34, a gear three 43 is fixedly connected to the rear end of the rotating roller 432, a plurality of limit columns 431 are fixedly connected to the rear side of the gear three 43, the outer surface of the rotating roller 432 is rotatably connected to the support seat 41, the outer surface of the gear three 43 is meshingly connected to the gear two 42, the front end of the gear two 42 is rotatably connected to the support seat 41, a plurality of limit columns 421 are fixedly connected to the rear side of the gear two 42, the outer surfaces of the limit columns 421 and the limit columns 431 are slidably connected to a rotating disk 44, the outer surface of the rotating disk 44 is fixedly connected to a rotating shaft three 45, and the front end of the rotating shaft three 45 is rotatably connected to the support seat 41.

[0051] Specifically, when gear three 43 rotates, limit post two 431 will engage with rotating disk 44, driving rotating disk 44 to rotate; and when limit post two 431 is disengaged from rotating disk 44, limit post one 421 just engages with rotating disk 44, thereby driving rotating disk 44 to rotate in another direction, causing rotating disk 44 to rotate back and forth.

[0052] The support base 41 mentioned above can provide support for the gear 2 42 , the gear 3 43 and the rotating disk 44 .

[0053] The pulley transmission group 2 46 mentioned above is composed of two pulleys and a belt.

[0054] See also Figure 3-6 The outer surface of the rotating shaft three 45 is fixedly connected with the pulley transmission group two 46, and the end of the pulley transmission group two 46 away from the rotating shaft three 45 is fixedly connected with the rotating shaft four 47, the outer surface of the rotating shaft four 47 is rotatably connected with a fixed seat 48, the lower end of the fixed seat 48 is fixedly connected to the transmission belt 1, the front end of the rotating shaft four 47 is fixedly connected with a swing arm 49, and the side of the swing arm 49 away from the rotating shaft four 47 is rotatably connected with a connecting shaft 410, the front side of the fixed seat 48 is fixedly connected with a connecting seat 411, the inner surface of the connecting seat 411 is fixedly connected with a limiting rod one 412, and the outer surface of the limiting rod one 412 is slidably connected with a sliding seat 413, and a circular hole is opened at the upper end of the sliding seat 413, and the inner surface of the circular hole is slidably connected with the outer surface of the connecting shaft 410.

[0055] Furthermore, during the rising stroke of the rack 32, the gear 33 and the ratchet 34 rotate two circles, so that the rotating disk 44 drives the swing arm 49 to swing back and forth twice during this stroke. During the swinging process, the limit rod 412 and the sliding seat 413 can limit the connecting shaft 410, so that the connecting shaft 410 can be raised, lowered and moved along a stable trajectory.

[0056] See also Figure 6The removal assembly 5 includes a telescopic rod 51 slidably connected to the inner surface of the connecting shaft 410, the lower end of the telescopic rod 51 is fixedly connected to a fixed rod 52, the upper end of the fixed rod 52 is fixedly connected to a spring 53, the upper end of the spring 53 is fixedly connected to the lower end of the sliding seat 413, the lower end of the spring 53 is fixedly connected to a connecting plate 54, and the lower end of the connecting plate 54 is fixedly connected to a plurality of air intake ports 55.

[0057] The outer surface of the connecting shaft 410 is fixedly connected with a pressure plate 56, the upper end surface of the sliding seat 413 is provided with an airbag 57, the lower surface of the pressure plate 56 is fixedly connected to the airbag 57, the lower end of the airbag 57 is fixedly connected with a hose 58, and the lower end of the hose 58 is fixedly connected to the connecting plate 54.

[0058] Furthermore, when the swing arm 49 drives the connecting shaft 410 to move, the air intake port 55 will contact the topmost woven bag in the stack. When the swing arm 49 is ready to be lifted, it will drive the pressure plate 56 to pull the air bag 57 to change the internal air pressure and then inhale air, thereby sucking up the topmost woven bag. When the swing arm 49 reaches the other side and descends, the air bag 57 is squeezed by the pressure plate 56 to become smaller and exhale air, and the woven bag loses suction and falls steadily on the transmission belt 1.

[0059] Furthermore, during the rising process of the printing platform 23 , the swing arm 49 swings back and forth twice, and can grab two plastic woven bags and place them on the surface of the transmission belt 1 in sequence.

[0060] Among them, the hose 58 is connected to the air intake port 55. The hose 58 is elastic and can be pulled and retracted. The telescopic rod 51 slides on the inner surface of the connecting shaft 410. The spring 53 can buffer the partial height difference between the connecting plate 54 and the air intake port 55 caused by the continuous reduction of the woven bag.

[0061] See also Figure 7-10 The rising component 6 includes a bearing platform 61 fixedly connected to the right end of the transmission belt 1, the upper end of the bearing platform 61 is rotatably connected to a rotating handle 62, the inner surface of the rotating handle 62 is fixedly connected to a threaded column 63, the outer surface of the threaded column 63 is threadedly connected to a lifting platform 64, the front side of the inner surface of the lifting platform 64 is slidably connected to a limiting rod 65, and the lower end of the limiting rod 65 is fixedly connected to the bearing platform 61.

[0062] Furthermore, the rotation of the threaded column 63 can drive the lifting platform 64 to move up and down, and the limiting rod 65 can limit the lifting platform 64 to enable it to move up and down stably.

[0063] See also Figure 7 and Figure 8The upper end of the threaded column 63 is fixedly connected to a rotating block 66, the outer surface of the swing arm 49 is fixedly connected to a connecting column 67, the end of the connecting column 67 away from the swing arm 49 is fixedly connected to a sliding bead 68, an arc groove 661 is opened on the outer surface of the rotating block 66, and the outer surface of the sliding bead 68 is slidably connected to the arc groove 661.

[0064] When the swing arm 49 swings, it will drive the sliding bead 68 to enter from the opening at the top of the arc groove 661. The arc groove 661 has a certain depth. Even if the sliding bead 68 is slightly displaced during the swinging process, it will not detach midway, but will only detach from the arc groove 661 at the top of the vertical part.

[0065] See also Fig.10 The lower part of the inner surface of the vertical part of the arc groove 661 is rotatably connected with a toggle block 663, the lower part of the inner surface of the vertical part of the arc groove 661 is fixedly connected with a stopper 664, the lower end of the stopper 664 is fixedly connected with a spring 2 665, and the lower end of the spring 2 665 is fixedly connected to the toggle block 663.

[0066] Furthermore, the stopper 664 can limit the toggle block 663 so that it can only rotate downward but cannot be lifted upward. The spring 2 665 can drive the toggle block 663 to reset, so that when the sliding bead 68 slides into the opening at the top of the vertical part of the arc groove 661, it can smoothly pass through the toggle block 663. Then, when the sliding bead 68 is lifted upward by the swing arm 49, it cannot be lifted up along the original path due to the obstruction of the toggle block 663, and can only slide along the track of the arc groove 661, thereby driving the rotating block 66 to rotate one circle and then detach from the top opening of the arc groove 661.

[0067] When the lifting platform 64 rises to the highest point, the handle 62 can be manually reversed to make the lifting platform 64 descend to the initial position and make the arc groove 661 coincide with the position of the sliding bead 68.

[0068] Then, the lifting seat 21 is started to drive the support frame 22 to rise. During the process of gear one 33 driving the ratchet 34 to rotate, the ratchet 34 will drive the rotating roller 432 and gear three 43 to rotate, and the gear three 43 is engaged with the gear two 42 to drive the gear two 42 to rotate in the opposite direction. At this time, the limiting column two 431 on the surface of the gear three 43 is engaged with the rotating disk 44, driving the rotating disk 44 to rotate. After rotating half a circle, the limiting column two 431 is disengaged from the rotating disk 44, and the limiting column one 421 on the surface of the gear two 42 is engaged with the rotating disk 44, driving the rotating disk 44 to rotate half a circle in the opposite direction.

[0069] The rotating disk 44 drives the rotating shaft 3 45, the pulley transmission group 2 46, the rotating shaft 47 and the swing arm 49 to swing back and forth during the reciprocating rotation. When the swing arm 49 swings to the left, the air inlet 55 contacts the uppermost woven bag and squeezes the spring 1 53 for buffering. When the swing arm 49 is lifted, the pressure plate 56 is driven to pull the air bag 57 to change the internal air pressure of the air bag 57 and then inhale air. The suction force is transmitted from the hose 58 to the air inlet 55, thereby sucking up the uppermost woven bag. Then, when the swing arm 49 reaches the right side and starts to descend, the air bag 57 is squeezed by the pressure plate 56 and becomes smaller and exhales air outward. The woven bag loses the suction force and falls steadily on the transmission belt 1.

[0070] Synchronously, when the swing arm 49 swings toward the left, it will drive the connecting column 67 and the sliding bead 68 to slide into the top opening of the vertical part of the arc groove 661, and then smoothly pass through the toggle block 663. After the air inlet 55 sucks the plastic woven bag, the swing arm 49 is lifted upward. At this time, due to the obstruction of the toggle block 663 and the stopper 664, the sliding bead 68 cannot directly slide away from the vertical part of the arc groove 661, and can only slide along the arc track of the arc groove 661, thereby driving the rotating block 66 to rotate one circle as a whole, thereby driving the threaded column 63 to rotate one circle, so that the lifting platform 64 is lifted upward, and the height difference caused by the reduction of the woven bag is compensated in real time.

[0071] Therefore, this solution achieves coordination between the lifting and lowering of the printing component 2 and the transmission component 3, the swing component 4, the removal component 5 and the lifting component 6, so that the printing machine 24 drives the swing arm 49 to swing left and right during the rising process, allowing the air intake port 55 to contact the accumulated woven bags, and through the clever coordination of suction and exhalation, the woven bags are placed on the transmission belt 1 in turn and smoothly, providing a continuous and stable supply of woven bags to be printed for the printing work, and the lifting component 6 compensates in real time for the height difference caused by the gradual reduction of woven bags, ensuring that the printing work is carried out uninterruptedly, thereby improving the printing work efficiency.

[0072] It should be noted that the specific installation method of the transmission belt 1, the lifting seat 21, the support frame 22 and the printing machine 24 used in the present invention, the circuit connection method and the control method are all conventional designs and will not be elaborated in detail in the present invention.

[0073] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A device for printing a pattern on the surface of a plastic woven bag, comprising a transmission belt (1), characterized in that: A printing assembly (2) is arranged at the upper end of the transmission belt (1), transmission rollers are arranged on the left and right sides of the transmission belt (1), a transmission assembly (3) is arranged on the rear side of the printing assembly (2), a swing assembly (4) is arranged on the right side of the transmission assembly (3), a removal assembly (5) is arranged on the front side of the swing assembly (4), and a lifting assembly (6) is arranged on the right side of the removal assembly (5).

2. A device for printing patterns on the surface of a plastic woven bag according to claim 1, characterized in that: The printing assembly (2) comprises a lifting seat (21) fixedly connected to the upper end of the transmission belt (1); the front side of the lifting seat (21) is slidably connected to a support frame (22); the front side of the support frame (22) is equipped with a printing platform (23); the front side of the support frame (22) is slidably connected to a printing machine (24); the printing machine (24) is slidably connected to the upper end of the printing platform (23).

3. A device for printing patterns on the surface of a plastic woven bag according to claim 2, characterized in that: The transmission assembly (3) comprises a connecting rod (31) fixedly connected to the rear end of the support frame (22); the right end of the connecting rod (31) is fixedly connected to a rack (32); the outer surface of the rack (32) is meshingly connected to a gear one (33); the inner surface of the gear one (33) is rotatably connected to a ratchet (34); the front end of the ratchet (34) is fixedly connected to a rotating shaft one (35); the front end of the rotating shaft one (35) is fixedly connected to a pulley transmission group one (36); the side of the pulley transmission group one (36) away from the rotating shaft one (35) is fixedly connected to a rotating shaft two (37); the front end of the rotating shaft two (37) is fixedly connected to the transmission roller on the right side.

4. A device for printing patterns on the surface of a plastic woven bag according to claim 3, characterized in that: The swing assembly (4) comprises a support seat (41) fixedly connected to the lower side of the rear end of the transmission belt (1); the rear end of the ratchet wheel (34) is fixedly connected to a rotating roller (432); the rear end of the rotating roller (432) is fixedly connected to a gear three (43); the rear side of the gear three (43) is fixedly connected to a plurality of limit posts two (431); the outer surface of the rotating roller (432) is rotatably connected to the support seat (41); the outer surface of the gear three (43) is meshingly connected to the gear two (42); the front end of the gear two (42) is rotatably connected to the support seat (41); the rear side of the gear two (42) is fixedly connected to a plurality of limit posts one (421); the outer surfaces of the limit posts one (421) and the limit posts two (431) are slidably connected to a rotating disk (44); the outer surface of the rotating disk (44) is fixedly connected to a rotating shaft three (45); the front end of the rotating shaft three (45) is rotatably connected to the support seat (41).

5. The device for printing patterns on the surface of a plastic woven bag according to claim 4, characterized in that: The outer surface of the rotating shaft three (45) is fixedly connected with a pulley transmission group two (46), and the end of the pulley transmission group two (46) away from the rotating shaft three (45) is fixedly connected with the rotating shaft four (47), and the outer surface of the rotating shaft four (47) is rotatably connected with a fixed seat (48), and the lower end of the fixed seat (48) is fixedly connected with the transmission belt (1), and the front end of the rotating shaft four (47) is fixedly connected with a swing arm (49), and the side of the swing arm (49) away from the rotating shaft four (47) is rotatably connected with a connecting shaft (410), and the front side of the fixed seat (48) is fixedly connected with a connecting seat (411), and the inner surface of the connecting seat (411) is fixedly connected with a limiting rod one (412), and the outer surface of the limiting rod one (412) is slidably connected with a sliding seat (413), and the upper end of the sliding seat (413) is provided with a circular hole, and the inner surface of the circular hole is slidably connected with the outer surface of the connecting shaft (410).

6. A device for printing patterns on the surface of a plastic woven bag according to claim 5, characterized in that: The removal assembly (5) comprises a telescopic rod (51) slidably connected to the inner surface of the connecting shaft (410); the lower end of the telescopic rod (51) is fixedly connected to a fixed rod (52); the upper end of the fixed rod (52) is fixedly connected to a spring 1 (53); the upper end of the spring 1 (53) is fixedly connected to the lower end of the sliding seat (413); the lower end of the spring 1 (53) is fixedly connected to a connecting plate (54); the lower end of the connecting plate (54) is fixedly connected to a plurality of air inlets (55).

7. A device for printing patterns on the surface of a plastic woven bag according to claim 6, characterized in that: The outer surface of the connecting shaft (410) is fixedly connected to a pressure plate (56), the upper end surface of the sliding seat (413) is provided with an airbag (57), the lower surface of the pressure plate (56) is fixedly connected to the airbag (57), the lower end of the airbag (57) is fixedly connected to a hose (58), and the lower end of the hose (58) is fixedly connected to the connecting plate (54).

8. The device for printing patterns on the surface of a plastic woven bag according to claim 5, characterized in that: The lifting component (6) comprises a bearing platform (61) fixedly connected to the right end of the transmission belt (1); the upper end of the bearing platform (61) is rotatably connected to a rotating handle (62); the inner surface of the rotating handle (62) is fixedly connected to a threaded column (63); the outer surface of the threaded column (63) is threadedly connected to a lifting platform (64); the front side of the inner surface of the lifting platform (64) is slidably connected to a limiting rod 2 (65); the lower end of the limiting rod 2 (65) is fixedly connected to the bearing platform (61).

9. The device for printing patterns on the surface of a plastic woven bag according to claim 8, characterized in that: The upper end of the threaded column (63) is fixedly connected to a rotating block (66), the outer surface of the swing arm (49) is fixedly connected to a connecting column (67), the end of the connecting column (67) away from the swing arm (49) is fixedly connected to a sliding bead (68), the outer surface of the rotating block (66) is provided with an arc groove (661), and the outer surface of the sliding bead (68) is slidably connected to the arc groove (661).

10. The device for printing patterns on the surface of a plastic woven bag according to claim 9, characterized in that: The lower part of the inner surface of the vertical part of the arc groove (661) is rotatably connected to a toggle block (663), the lower part of the inner surface of the vertical part of the arc groove (661) is fixedly connected to a stopper block (664), the lower end of the stopper block (664) is fixedly connected to a second spring (665), and the lower end of the second spring (665) is fixedly connected to the toggle block (663).

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