A double-sided printing device for woven bags
By designing a double-sided printing device for woven bags, and using components such as a fixed wall plate, a moving wall plate, a hydraulic cylinder, and an electric push rod, double-sided printing of woven bags was achieved, solving the problem of ink penetration and improving printing quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI FENGWEI ENVIRONMENTAL PROTECTION TECH CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-07-03
AI Technical Summary
In existing woven bag printing machines, during the printing process, the ink can easily seep through the gaps in the flat yarns to the other side that does not need to be dyed, affecting the printing quality.
A double-sided printing device for woven bags was designed, which adopts symmetrically arranged fixed and moving wall plates. By synchronously rotating the fixed and moving rollers, combined with hydraulic cylinders, electric push rods and drive mechanisms, the printing ink is evenly coated on the surface of the fixed and moving rollers. The amount of printing ink is controlled by an arc plate to achieve double-sided printing.
This effectively prevents ink penetration, ensures double-sided printing on woven bags, and improves printing quality.
Smart Images
Figure CN224447176U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of woven bag processing technology, and in particular to a double-sided printing device for woven bags. Background Technology
[0002] Woven bags are packaging bags made primarily of polypropylene or polyethylene, which are extruded, stretched into flat filaments, and then woven, braided, and made into bags. They are widely used for packaging materials such as powders and granules. During the production process, corresponding slogans or logos need to be printed on the surface of the woven bags according to customer requirements.
[0003] Currently, woven bag printing machines mainly use roller printing machines. These machines use traction equipment to pull the woven bag along the transmission direction of the printing roller, and then use pressure rollers to press the woven bag against the surface of the printing roller to complete the printing process. However, woven bags are made of flat yarns woven into a double layer. During the printing process, excess ink can seep through the gaps between the flat yarns to the other side that does not need to be dyed, affecting the printing quality. Utility Model Content
[0004] The purpose of this invention is to address existing problems by providing a double-sided printing device for woven bags.
[0005] This utility model is achieved through the following technical solution:
[0006] A double-sided printing device for woven bags includes a fixed wall plate and a movable wall plate symmetrically arranged. A fixed roller and a movable roller are rotatably connected between the fixed wall plate and the movable wall plate, respectively. Hydraulic cylinders are symmetrically connected to the outer sides of the fixed wall plate and the movable wall plate. Gears are sleeved on the end shafts of the fixed roller and the movable roller, and the fixed roller is driven by a drive mechanism. A first fabric plate and a second fabric plate are respectively arranged on one side of the fixed roller and the movable roller. The first fabric plate and the second fabric plate are both supported by electric push rods and connected to the inner side of the movable wall plate and the fixed wall plate, respectively. A fabric tube is arranged on the first fabric plate and the second fabric plate. The fabric tube is connected to a three-way pipe, which is connected to a feed pipe. The feed pipe is installed at the bottom of the ink tank. The ink tank is installed on the top plate of the movable wall plate. A pad is arranged at the lower end of the fixed wall plate.
[0007] As a further improvement to the above solution, a safety switch is provided on the outer side of the end where the fixed wall plate and the moving wall plate are close to each other. The safety switch is installed on the outer side of the fixed wall plate through a valve seat, and the stop bar is connected to the outer side of the fixed wall plate directly above the safety switch.
[0008] Safety switches are used to ensure the displacement distance of the moving wall plate and the moving roller, thereby ensuring the spacing between the fixed roller and the moving roller, and thus achieving effective driving force to ensure the effectiveness of the printing displacement of the woven bag.
[0009] As a further improvement to the above solution, both ends of the first and second fabric plates are connected to the rods of the electric push rods, and the electric push rods are connected to the inner sides of the moving wall plate and the fixed wall plate through rod seats.
[0010] The electric push rods are used to support the two ends of the fabric plate 1 and fabric plate 2. The electric push rods drive the fabric plate 1 and fabric plate 2 to approach or move away from the fixed roller and the moving roller. The arc-shaped plates inside the fabric plate 1 and fabric plate 2 match the outer curved surfaces of the fixed roller and the moving roller, thereby effectively controlling the amount of printing ink applied to the surface of the fixed roller and the moving roller.
[0011] As a further improvement to the above solution, the pad includes a fixed seat, which is connected to the lower outer side of the fixed wall plate. A bolt rod is connected through the fixed seat, and the lower end of the bolt rod is connected to a fixed plate. A spring is fitted on the bolt rod between the fixed plate and the fixed seat.
[0012] The device is fixed by a fixing plate. The device supports and pads the fixed wall plate with the support of bolts and springs, and the elastic support of the springs reduces the vibration generated by the device during operation.
[0013] As a further improvement to the above solution, the two ends of the hydraulic cylinder are respectively connected to the lower support and the upper support, the lower support is connected to the fixed wall plate, and the upper support is connected to the moving wall plate.
[0014] The hydraulic cylinder is supported by the lower support on the outside of the fixed wall plate, while the upper support is used to support the hydraulic cylinder's supporting force on the moving wall plate.
[0015] As a further improvement to the above solution, the drive mechanism includes a driven pulley, which is sleeved on the end of the fixed roller and located on the outside of the fixed wall plate. The driven pulley is connected to the main pulley via a belt, and the main pulley is sleeved on the output shaft of the drive motor.
[0016] The motor drives the main pulley to rotate, which in turn drives the driven pulley to rotate. The driven pulley then drives the fixed roller to rotate. Simultaneously, the gears on the driven pulley and fixed roller mesh with the gears on the moving roller, thus driving the moving roller and fixed roller to rotate relative to each other, achieving the effect of printing on both the front and back sides of the woven tape at the same time.
[0017] Compared with the prior art, this utility model has the following advantages: it has a simple structure, reasonable design, and novel and unique concept. The ink in the ink tank drips from the fabric tube onto two fabric plates through the supply pipe and the three-way pipe. The two fabric plates are used to apply ink to the surfaces of the fixed roller and the moving roller respectively. The fixed roller and the moving roller are driven to rotate and print on both sides of the woven bag. In particular, the arc-shaped plates on the inner side of the two fabric plates evenly coat the printing ink onto the surfaces of the fixed roller and the moving roller, ensuring good printing effect. The ink film layer of the arc plate is applied to the fixed roller and the moving roller, avoiding excessive ink coating on the fixed roller and the moving roller, thereby ensuring printing effect and avoiding the defects of ink staining. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of this utility model.
[0019] Figure 2 This is a schematic diagram of the drive mechanism for the stationary and moving rollers and the fabric structure.
[0020] Figure 3 A schematic diagram of the structure for adjusting the support of the movable wall panel. Detailed Implementation
[0021] The present invention will be further described below with reference to the accompanying drawings.
[0022] like Figures 1 to 3 As shown, a double-sided printing device for woven bags includes a fixed wall plate 1 and a movable wall plate 2 symmetrically arranged. A fixed roller 4 and a movable roller 5 are rotatably connected between the fixed wall plate 1 and the movable wall plate 2, respectively. Hydraulic cylinders 3 are symmetrically connected to the outer sides of the fixed wall plate 1 and the movable wall plate 2. Gear 6 and gear 7, which mesh with each other, are sleeved on the end shafts of the fixed roller 4 and the movable roller 5. The fixed roller 4 is driven by a drive mechanism 8. A fabric plate 11 and a fabric board 12 are respectively arranged on one side of the fixed roller 4 and the movable roller 5. The first and second fabric plates 10 are both supported by electric push rods 15 and connected to the inner side of the moving wall plate 2 and the fixed wall plate 1 respectively. Both the first and second fabric plates 11 and 10 are equipped with fabric pipes 20, which are connected to a three-way pipe 19. The three-way pipe 19 is connected to a feed pipe 18, which is installed at the bottom of the ink tank 17. The ink tank 17 is installed on the top plate of the moving wall plate 2. A pad 9 is provided at the lower end of the fixed wall plate 1.
[0023] As a further improvement to the above solution, a safety switch 13 is provided on the outer side of the end where the fixed wall plate 1 and the moving wall plate 2 are close to each other. The safety switch 13 is installed on the outer side of the fixed wall plate 1 through a valve seat, and the stop bar 14 is connected to the outer side of the fixed wall plate 1 directly above the safety switch 13.
[0024] Safety switch 13 is used to ensure the displacement distance of moving wall plate 2 and moving roller 5, which is used to ensure the distance between fixed roller 4 and moving roller 5, thereby achieving effective driving force and ensuring the effectiveness of printing displacement of woven bag.
[0025] As a further improvement to the above solution, both ends of the fabric plate 11 and the fabric plate 10 are connected to the rod body of the electric push rod 15, and the electric push rod 15 is connected to the inner side of the moving wall plate 2 and the fixed wall plate 1 through the rod seat 16.
[0026] The electric push rod 15 is used to support the two ends of the fabric plate 11 and the fabric 2. The electric push rod 15 drives the fabric plate 11 and the fabric plate 2 to approach or move away from the fixed roller 4 and the moving roller 5. The arc-shaped plates inside the fabric plate 11 and the fabric plate 2 match the outer curved surface of the fixed roller 4 and the moving roller 5, thereby effectively controlling the amount of printing ink applied to the surface of the fixed roller 4 and the moving roller 5.
[0027] As a further improvement to the above solution, the pad 9 includes a fixed seat 91, which is connected to the lower outer side of the fixed wall plate 1. A bolt 92 is connected through the fixed seat 91, and the lower end of the bolt 92 is connected to a fixed plate 94. A spring 93 is fitted on the bolt 92 between the fixed plate 94 and the fixed seat 91.
[0028] The device is fixed by a fixing plate 94. The device supports and pads the fixed wall plate 1 under the support of the bolt rod 92 and the spring 93. The elastic support of the spring 93 reduces the vibration generated by the device during operation.
[0029] As a further improvement to the above solution, the two ends of the hydraulic cylinder 3 are respectively connected to the lower support 31 and the upper support 32, the lower support 31 is connected to the fixed wall plate 1, and the upper support 32 is connected to the moving wall plate 2.
[0030] The lower support 31 supports the hydraulic cylinder 3 on the outside of the fixed wall plate 1, while the upper support 32 supports the hydraulic cylinder 3 on the moving wall plate 2.
[0031] As a further improvement to the above solution, the drive mechanism 8 includes a driven pulley 81, which is sleeved on the end of the fixed roller 4 and located on the outside of the fixed wall plate 1. The driven pulley 81 is connected to the main pulley 83 through a belt 82, and the main pulley 83 is sleeved on the output shaft of the drive motor 84.
[0032] The main pulley 83 is driven to rotate by the motor 84. The main pulley 83 rotates through the driven pulley 81, which in turn rotates through the fixed roller 4. At the same time, the gears coaxial with the driven pulley 81 and the fixed roller 4 mesh with the gears coaxial with the moving roller 5, thereby driving the moving roller 5 and the fixed roller 4 to rotate relative to each other, so as to achieve the effect of printing on the front and back of the woven belt at the same time.
[0033] The working principle of a double-sided printing device for woven bags: The ink in the ink tank 17 drips from the fabric tube 20 onto two fabric plates through the feed pipe 18 and the three-way pipe 19. The two fabric plates are used to apply ink to the surfaces of the fixed roller 4 and the moving roller 5 respectively. The fixed roller 4 and the moving roller 5 are driven to rotate and print on both sides of the woven bag.
[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A woven bag double-sided printing apparatus comprising a fixed wall plate and a moving wall plate disposed symmetrically, characterized in that, The fixed wall plate and the moving wall plate are rotatably connected to a fixed roller and a moving roller, respectively. Hydraulic cylinders are symmetrically connected to the outer sides of the fixed wall plate and the moving wall plate. Gears are sleeved on the end shafts of the fixed roller and the moving roller. The fixed roller is driven by a drive mechanism. A first cloth feeding plate and a second cloth feeding plate are respectively provided on one side of the fixed roller and the moving roller. The first cloth feeding plate and the second cloth feeding plate are respectively connected to the inner side of the moving wall plate and the fixed wall plate by electric push rods. A cloth feeding pipe is provided on the first cloth feeding plate and the second cloth feeding plate. The cloth feeding pipe is connected to a three-way pipe. The three-way pipe is connected to a feed pipe. The feed pipe is installed at the bottom of the ink tank. The ink tank is installed on the top plate of the moving wall plate. A pad is provided at the lower end of the fixed wall plate.
2. A woven bag double-sided printing device according to claim 1, characterized in that, A safety switch is installed on the outer side of the end of the fixed wall plate and the moving wall plate that are close to each other. The safety switch is installed on the outer side of the fixed wall plate through a valve seat, and the stop bar is connected to the outer side of the fixed wall plate directly above the safety switch.
3. The woven bag double-sided printing device according to claim 1, characterized in that, Both ends of the fabric plate one and fabric plate two are connected to the rod body of the electric push rod, and the electric push rod is connected to the inner side of the moving wall plate and the fixed wall plate through the rod seat.
4. The woven bag double-sided printing apparatus according to claim 1, wherein The pad includes a fixed seat, which is connected to the lower outer side of the fixed wall plate. A bolt rod is connected through the fixed seat, and the lower end of the bolt rod is connected to a fixed plate. A spring is fitted on the bolt rod between the fixed plate and the fixed seat.