Printing limiting device for plastic bag assembly line
By designing printing limit devices for edge pressing mechanism, smoothing mechanism and roller shaft mechanism in plastic bag printing press, the problems of offset and wrinkle of plastic bags during printing are solved, and the edge limit and surface smoothing of plastic bags are achieved, which improves the aesthetics and adaptability of printing effects.
Patent Information
- Application Number
- CN202422003135.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-19
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-08-19
AI Technical Summary
The existing plastic bag printing machines lack limit and smoothing functions for the plastic bag transmission process during the printing process, resulting in the plastic bag being easily offset during the movement, affecting the aesthetics of the LOGO printing position.
A printing limiting device including an edge pressing mechanism, a smoothing mechanism and a roller mechanism is designed. The edge pressing mechanism limits the edges of the plastic bag through the ply plate, the smoothing mechanism ensures that the surface of the plastic bag is flat through the slide rod and the pressure plate, and the roller shaft mechanism rotates and rolls the plastic bag, and prints with the printing mechanism.
Through limiting and smoothing functions, ensure that the edge position and surface of the plastic bags keep the plastic bags flat during printing, avoid offsets and wrinkles, and improve the aesthetics of the printing effect. At the same time, through the cooperation of the removable press plate and compression spring, plastic bags of different thicknesses and widths are adapted to avoid damage.
Smart Images
Figure CN222819725U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to a printing position limiting device, and more specifically, to a printing position limiting device for a plastic bag production line. Background Art
[0002] The use of plastic bags has brought great convenience to thousands of households and provided an important guarantee for environmental protection. Some food bags and garbage bags will use printing machines to print LOGOs during production.
[0003] For example, the utility model patent with publication number CN215850217U discloses a roller-type food packaging bag LOGO printer, including a LOGO printer body, support rods are fixedly connected to the left and right sides of the upper end of one side of the LOGO printer body, and the upper end of the support rods is fixedly connected to a fixed seat, an oil drip groove is opened at the middle position of the upper inner end of the fixed seat, and an oil drip lubrication component is arranged at the upper end of the fixed seat, a sealing oil ring is fixedly connected to the inner wall of one side of the fixed seat, and a card roller movable component is arranged on one side of the fixed seat, a winding roller is arranged at the middle position of the upper end of one side of the LOGO printer body, and a rolled food packaging bag is wound around the outside of the winding roller. Through the arrangement of the card roller movable component, the winding roller and the rolled food packaging bag on the LOGO printer body in the utility model are simple and convenient to install and replace relative to the LOGO printer body, so as to better use the LOGO printer body.
[0004] During the printing process, the existing plastic bag printing machine lacks the function of limiting and smoothing the plastic bag transmission process, which makes it easy for the bag to shift during the movement, resulting in the LOGO printing position shifting and wrinkling, affecting the appearance. Summary of the invention
[0005] In order to solve the above problems of the existing plastic bag printing production line, the technical solution adopted by the present application is: to provide a printing limiting device for a plastic bag production line with limiting and smoothing functions, including an operating platform and a printing mechanism; and also including:
[0006] The edge pressing mechanism is arranged on both sides of the working platform, and includes clamping plates arranged opposite to each other and a first cylinder driving the clamping plates;
[0007] The leveling mechanism is suspended above the working platform and includes two support columns symmetrically arranged above the working platform. The two support columns are provided with slide grooves on opposite sides. A slide rod is connected between the two slide grooves. A pressure plate is detachably connected to the bottom of the slide rod.
[0008] The roller mechanism is horizontally arranged at the exit of the working platform.
[0009] Preferably, protective platforms are provided on both sides of the transmission channel of the working platform, and both protective platforms are provided with transverse grooves, in which the rear end protrusions of the splint are slidably arranged, and the output end of the first cylinder is connected to the rear end protrusions of the splint.
[0010] Preferably, a proximity sensor is provided on the pressure plate, and a compression spring is provided between the slide rod and the bottom of the slide groove.
[0011] Preferably, a screw rod is provided inside the slide groove, the screw rod is sleeved with a nut seat connected to the slide rod, and the upper part of the screw rod is connected to a motor arranged above the support column.
[0012] Preferably, a first belt pulley and a second belt pulley are respectively sleeved on the tops of the two screw rods, and the first belt pulley and the second belt pulley are connected by a belt.
[0013] Preferably, the printing mechanism comprises a support frame straddling the working platform, a second cylinder is arranged on the top of the support frame, and an output end of the second cylinder is downwardly connected to a printing head.
[0014] Preferably, the roller mechanism includes two support plates connected to the exit of the working platform, a roller is connected between the two support plates, one end of the roller is connected to a motor, the motor is arranged on a bracket, and the bracket is fixed on the adjacent support plates.
[0015] Preferably, a slot is fixedly connected to the bottom end of the slide rod, and a buckle matching the slot is fixedly connected to the top end of the pressure plate.
[0016] Preferably, the buckle and the slot are both made of magnetic materials.
[0017] Preferably, the support plate not connected to the motor includes an upper support plate and a lower support plate that are rotatably connected, and one end of the upper support plate and the lower support plate are rotatably connected; a latch is also provided at the connection between the upper support plate and the lower support plate, and the latch includes two upper latch rings, a lower latch ring and a latch rod, and the latch rod is provided with a gear handle located between the two upper latch rings.
[0018] The utility model has the beneficial effect of being provided with an edge pressing mechanism and a smoothing mechanism. Before printing, the edge pressing mechanism moves inward to limit the edges on both sides of the plastic bag, the smoothing mechanism moves downward to ensure the flatness of the surface of the plastic bag, the roller mechanism rotates to roll up the plastic bag, and at the same time cooperates with the printing mechanism to press down for printing, so that the pattern remains flat and beautiful during printing. While the pressure plate of the smoothing mechanism is pressed down, it can be tensioned and height-limited in cooperation with the compression spring and the proximity sensor, fully adapting to plastic bags of different thicknesses and avoiding scratching the plastic bags. The splint of the edge pressing mechanism and the detachable pressure plate of the smoothing mechanism can adapt to plastic bags of different widths. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0020] Figure 1 This is a schematic diagram of the structure of a printing limiter for a plastic bag assembly line according to an embodiment of the present application;
[0021] Figure 2 for Figure 1 The enlarged schematic diagram at A in the middle;
[0022] Figure 3 for Figure 1 The enlarged schematic diagram of point B in the middle;
[0023] Figure 4 This is a schematic diagram of the local structure of the smoothing mechanism of Example 1 of the present application;
[0024] Figure 5 This is a schematic diagram of the partial structure of the edge pressing mechanism of Example 1 of the present application;
[0025] Figure 6 This is a schematic diagram of the structure of the sliding rod and the pressing plate of the second embodiment of the present application;
[0026] Figure 7 This is a schematic diagram of the support plate structure of Example 2 of the present application.
[0027] Explanation of symbols in the figure:
[0028] 1. Working platform; 2. Clamp; 3. Plastic bag; 4. Support column; 5. Slide; 6. Slide rod; 7. Compression spring; 8. Motor; 9. Support frame; 10. Print head; 11. Support plate; 12. Roller; 13. Screw; 14. First belt pulley; 15. Press plate; 16. Belt; 17. Second belt pulley; 18. Turntable; 19. Upper support plate; 20. Latch; 21. First cylinder; 22. Groove; 23. Second cylinder; 24. Rotating shaft; 25. Buckle; 26. Slot; 27. Bracket; 28. Motor; 29. Bracket. DETAILED DESCRIPTION
[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.
[0030] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0031] The printing limiting device for the plastic bag assembly line provided in the embodiment of the present application is now described.
[0032] Embodiment 1
[0033] See also Figure 1 , is a schematic diagram of the structure of the printing limit device for the plastic bag assembly line of the present application. The printing limit device for the plastic bag assembly line includes a working platform 1, an edge pressing mechanism, a smoothing mechanism, a printing mechanism and a roller mechanism; the edge pressing mechanism is symmetrically arranged on both sides of the transmission channel of the working platform 1, the smoothing mechanism and the printing mechanism are suspended above the transmission channel of the working platform 1, and the roller mechanism is horizontally arranged at the exit of the transmission channel of the working platform 1. When the plastic bag 3 is subjected to assembly line printing processing, it can be laid on the working platform 1, one end of which is wound around the surface of the roller mechanism, the edge pressing mechanism moves inward to limit the edges on both sides of the plastic bag 3, the smoothing mechanism moves downward to ensure the flatness of the surface of the plastic bag 3, the roller mechanism rotates to roll up the plastic bag 3, and at the same time cooperates with the printing mechanism to press down for printing.
[0034] Specifically, the edge pressing mechanism includes oppositely arranged clamping plates 2 and a first cylinder 21 driving the clamping plates 2. Furthermore, protective platforms are provided on both sides of the transmission channel of the working platform 1, and both protective platforms are provided with transverse through grooves 22 (see Figure 5 ), the rear end protrusion of the clamping plate 2 is slidably arranged in the through groove 22, and the output end of the first cylinder 21 is connected to the rear end protrusion of the clamping plate 2. The clamping plate 2 is always located outside the through groove 22, and the first cylinder 21 drives the rear end protrusion to slide in the through groove 22, so that the clamping plate 2 moves toward each other along the transmission channel to limit the edge position of the plastic bag 3.
[0035] See also Figure 4 , which is a schematic diagram of the local structure of the smoothing mechanism. The smoothing mechanism includes two support columns 4 symmetrically arranged above the working platform 1, and the opposite surfaces of the support columns 4 are provided with slide grooves 5, and a slide bar 6 is connected between the two slide grooves 5. The bottom of the slide bar 6 is detachably connected with a pressing plate 15, and a proximity sensor is provided on the pressing plate 15 for sensing the position of the plastic bag 3, so as to achieve smoothing by lightly touching the plastic bag 3 and avoid unnecessary damage. Furthermore, the length of the pressing plate 15 is shorter than the slide bar 6, usually less than or equal to the width of the plastic bag 3, and the pressing plate 15 of appropriate size can be replaced according to actual operation requirements to avoid interference with the splint 2 during operation.
[0036] Furthermore, a compression spring 7 is provided between the slide bar 6 and the bottom of the slide slot 5 , also to prevent the slide bar 6 from being pressed down too much, causing the pressing plate 15 to damage the plastic bag 3 .
[0037] The driving of the slide bar 6 adopts a screw transmission method. Specifically, the screw rod 13 is arranged inside the slide groove 5, and the screw rod 13 is sleeved with a nut seat connected to the slide bar 6. The top of the screw rod 13 is connected to the motor 8 arranged above the support column 4. The motor 8 is fixed to the support column 4 through a bracket 29. The motor 8 drives the screw rod 13 to rotate left and right, and the nut seat moves the slide bar 6 up and down. The two screw rods 13 can be driven by two motors 8 respectively, or by one motor 8. When one motor 8 is used, one screw rod 13 is driven by the motor 8, and the two screw rods 13 are driven by a belt 16 to achieve a better synchronization effect. Specifically, the upper end of the screw rod 13 passes through the through hole of the support column 4 and is connected to the motor 8. The tops of the two screw rods 13 are respectively sleeved with a first belt pulley 14 and a second belt pulley 17, and the two belt pulleys are connected by a belt 16.
[0038] The printing mechanism includes a support frame 9 straddling the working platform 1, a second cylinder 23 is disposed on the top of the support frame 9, and an output end of the second cylinder 23 is downwardly connected to a printing head 10. The second cylinder 23 drives the printing head 10 to move downward to complete the printing action.
[0039] The roller mechanism includes two support plates 11 connected to the exit of the working platform 1 , a roller 12 is connected between the two support plates 11 , one end of the roller 12 is connected to a motor 28 , the motor 28 is disposed on a bracket 27 , and the bracket 27 is fixed on the support plate 11 .
[0040] Working process: When the plastic bag 3 is processed by assembly line printing, it can be laid on the working platform 1, and one end is wound around the surface of the roller 12. Then operate the edge pressing mechanism, turn on the first cylinder 21 to drive the clamps 2 to move closer to each other, the clamps 2 are close to each other, the bottom of the clamps 2 is in contact with the edges of the two sides of the plastic bag 3, and there may even be a pressing situation, so as to limit the edges of the two sides of the plastic bag 3. When the staff judges that the clamps 2 are moved into place, the first cylinder 21 can be closed. Secondly, operate the smoothing mechanism, turn on the motor 8 to drive the screw 13 to rotate, and drive the two threaded rods 13 to rotate at the same time through two belt pulleys and belt 16, so as to drive the slide bar 6 to drive the pressing plate 15 to move downward, so that the compression spring 7 is compressed, and the proximity sensor of the pressing plate 15 detects that it is in place, and the control motor 8 stops running. At this time, the pressing plate 15 is slightly in contact with the plastic bag 3 below. At this time, operate the roller mechanism, turn on the motor 28 to drive the roller 12 to rotate to reel the plastic bag 3, and at the same time, turn on the second cylinder 23 to drive the printing head 10 to print the plastic bag 3.
[0041] Before printing, the smoothing mechanism flattens the plastic bag 3 so that the pattern remains flat and beautiful during printing. While the pressure plate 15 of the smoothing mechanism is pressed down, the compression spring 7 and the proximity sensor can be used to adjust the tension and limit the height, fully adapting to plastic bags 3 of different thicknesses and avoiding scratching the plastic bags 3. The clamping plate 2 of the edge pressing mechanism and the detachable pressure plate 15 of the smoothing mechanism can adapt to plastic bags 3 of different widths.
[0042] Embodiment 2
[0043] On the basis of the first embodiment, further configuration is provided.
[0044] See also Figure 2 , two screws 13 of the smoothing mechanism, when the two screws 13 are connected by a belt 16, one is connected to the motor 8, and a turntable 18 is provided on the top of the other to achieve balance and facilitate maintenance and assembly of the screw 13. Specifically, a silicone protective sleeve can be provided on the surface of the turntable 18, and an anti-slip thread can be provided on the surface of the silicone protective sleeve.
[0045] See also Figure 6 , is a schematic diagram of the structure of the slide bar 6 and the pressure plate 15. The bottom end of the slide bar 6 is fixedly connected with a slot 26, and the top end of the pressure plate 15 is fixedly connected with a buckle 25 that matches the slot 26. Both the buckle 25 and the slot 26 are made of magnetic materials, and the two attract each other, and the snap connection is more stable.
[0046] See also Figure 3 , Figure 7 . The support plate 11 that is not connected to the motor 28 includes an upper support plate 19 and a lower support plate that are rotatably connected. One end of the upper and lower support plates is rotatably connected through a rotating shaft 24 or a hinge structure. When the two are aligned, the roller shaft 12 is located between the two. The roller shaft 12 can be replaced by opening the upper support plate 19. In order to ensure a stable connection, a latch 20 is also provided at the connection between the upper and lower support plates. The latch 20 includes two upper latch rings, a lower latch ring and a latch rod. The latch rod is provided with a stopper located between the two upper latch rings. Due to the setting of the stopper, the latch rod cannot be separated from the upper support plate 19. When the upper and lower support plates are aligned, the bottom of the latch rod is inserted into the lower latch ring, and the upper and lower support plates are stably connected; when the upper support plate 19 is lifted, the latch rod is separated from the lower latch ring, which is convenient for the staff to operate.
[0047] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.
Claims
1. A printing limiter for a plastic bag production line, comprising a work platform and a printing mechanism; characterized in that: Also includes: The edge pressing mechanism is arranged on both sides of the working platform, and comprises clamping plates arranged opposite to each other and a first cylinder driving the clamping plates; A leveling mechanism is suspended above the working platform, comprising two support columns symmetrically arranged above the working platform, wherein the two support columns have slide grooves on opposite sides, a slide rod is connected between the two slide grooves, and a pressure plate is detachably connected to the bottom of the slide rod; and The roller mechanism is horizontally arranged at the exit of the working platform.
2. The printing position limiting device for a plastic bag assembly line according to claim 1, characterized in that: Protective platforms are provided on both sides of the transmission channel of the working platform. Both of the protective platforms are provided with transverse through grooves. The rear end protrusions of the clamping plate are slidably arranged in the through grooves. The output end of the first cylinder is connected to the rear end protrusions of the clamping plate.
3. The printing position limiting device for a plastic bag assembly line according to claim 1, characterized in that: A proximity sensor is arranged on the pressure plate, and a compression spring is arranged between the slide bar and the bottom of the slide groove.
4. The printing position limiting device for a plastic bag assembly line as claimed in claim 3, characterized in that: A screw rod is arranged inside the slide groove, and a nut seat connected to the slide rod is sleeved on the screw rod. The upper part of the screw rod is connected to a motor arranged above the support column.
5. The printing position limiting device for a plastic bag assembly line as claimed in claim 4, characterized in that: The tops of the two screw rods are respectively sleeved with a first belt pulley and a second belt pulley, and the first belt pulley and the second belt pulley are connected by a belt.
6. The printing position limiting device for a plastic bag assembly line according to claim 1, characterized in that: The printing mechanism comprises a support frame straddling the working platform, a second cylinder is arranged on the top of the support frame, and an output end of the second cylinder is downwardly connected to a printing head.
7. The printing position limiting device for a plastic bag assembly line according to claim 1, characterized in that: The roller mechanism includes two support plates connected to the exit of the working platform, a roller is connected between the two support plates, one end of the roller is connected to a motor, the motor is arranged on a bracket, and the bracket is fixed on the adjacent support plates.
8. The printing position limiting device for a plastic bag assembly line according to claim 1 or 3, characterized in that: The bottom end of the slide bar is fixedly connected with a slot, and the top end of the pressure plate is fixedly connected with a buckle matched with the slot.
9. The printing position limiting device for a plastic bag assembly line as claimed in claim 8, characterized in that: The buckle and the slot are both made of magnetic materials.
10. The printing position limiting device for a plastic bag assembly line according to claim 7, characterized in that: The support plate not connected to the motor includes an upper support plate and a lower support plate that are rotatably connected, and one end of the upper support plate and the lower support plate are rotatably connected; a latch is also provided at the connection between the upper support plate and the lower support plate, and the latch includes two upper latch rings, a lower latch ring and a latch rod, and the latch rod is provided with a gear lever located between the two upper latch rings.