Paper feeding device of label sticker printing machine

Abstract

The utility model relates to the field of printing machines, in particular to a paper feeding device of a label sticker printing machine. The paper feeding device of the label sticker printing machine comprises a bottom plate, a moving frame, a discharging frame and an expansion assembly, a workbench is fixedly connected to the top end of the bottom plate, an expansion roller is installed on one side of the workbench, a guide roller is installed on one side of the workbench, the moving frame is installed at the top end of the bottom plate, and a U-shaped feeding frame is rotationally connected to the top end of the moving frame. The two ends of the U-shaped feeding frame are sleeved with paper rolls, and the top end of the bottom plate is slidably connected with a discharging frame. According to the utility model, an operator is allowed to prepare a new roll of paper on the U-shaped feeding frame in advance when the last roll of label paper is about to be used up; by means of the design, the waiting time for replacement of label paper due to shutdown in a traditional mode is avoided, and the production efficiency is remarkably improved; and by starting the rotating motor, new label roll paper can be accurately aligned to the position of the expansion roller, manual alignment is not needed, the replacement time is further shortened, and the operation difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the field of printing machines, in particular to a paper feeding device of a label sticker printing machine. Background Art

[0002] In the existing label and sticker printing industry, the paper feeder plays a vital role. However, traditional label and sticker printing machine paper feeders face a series of operational inconveniences after use. Specifically, when a roll of label paper runs out, the operator needs to manually intervene and perform a series of tedious steps to replace the roll of label paper.

[0003] First, the operator needs to stop the machine and remove the used label paper roll core. Then, the new label paper roll needs to be accurately placed on the expansion roller. Before that, the alignment needs to be adjusted to ensure that the label paper can be fed into the printing press smoothly.

[0004] In addition, traditional paper feeding devices often lack effective auxiliary mechanisms when replacing label paper, which makes operators easily feel tired when carrying and installing new label rolls; at the same time, the frequent shutdown required to replace label paper also greatly reduces the production efficiency of the printing press.

[0005] Therefore, it is necessary to provide a new paper feeding device of a label sticker printing machine to solve the above-mentioned technical problems. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides a paper feeding device of a label sticker printing machine.

[0007] The paper feeding device of the label sticker printing machine provided by the utility model includes: a base plate, a movable frame, a blanking frame and an expansion component, the top of the base plate is fixedly connected to the workbench, an expansion roller is installed on one side of the workbench, a guide roller is installed on one side of the workbench, the top of the base plate is installed, the top of the movable frame is rotatably connected to the U-shaped feeding frame, both ends of the U-shaped feeding frame are sleeved with paper rolls, the top of the base plate is slidably connected to the blanking frame, and the blanking frame is located at the end of the expansion roller, the blanking frame and the movable frame are installed in coordination, the expansion component is installed on one side of the workbench, and the expansion component and the expansion roller are installed in coordination.

[0008] Preferably, the expansion assembly includes: a material stripping electric push rod, a cross bar, a guide rod, a first moving rod, a second moving rod and a tension spring. One side of the workbench is fixedly connected to the material stripping electric push rod, the output end of the material stripping electric push rod is fixedly connected to the cross bar, and the two ends of the cross bar are symmetrically slidably connected to the guide rods. One end of the two guide rods is fixedly connected to the first moving rod, and the middle part of the two guide rods is slidably connected to the second moving rod. The outer sides of the two guide rods are provided with tension springs, and the two ends of the tension springs are respectively fixedly connected to one side of the first moving rod and the second moving rod.

[0009] Preferably, a mounting groove is provided at the top of the base plate, a threaded rod is rotatably connected inside the mounting groove, a movable motor is fixedly connected to one side of the base plate, the output end of the movable motor is fixedly connected to one end of the threaded rod, the bottom end of the movable frame is threadedly connected to the threaded rod, a trapezoidal extrusion block is fixedly connected to one side of the movable frame, and the inclined surface of the trapezoidal extrusion block is in contact with a corner of the blanking frame.

[0010] Preferably, a slide groove is provided at the bottom end of the bottom plate, the blanking frame is slidably connected to the slide groove, a return spring is fixedly connected inside the slide groove, and one end of the return spring is fixedly connected to the bottom end of the blanking frame.

[0011] Preferably, one side of the movable frame is fixedly connected to a paper feeding electric push rod, the output end of the paper feeding electric push rod is fixedly connected to a connecting piece, one side of the movable frame is fixedly connected to a rotating motor, and the output end of the rotating motor is fixedly connected to the center of the U-shaped feeding frame.

[0012] Preferably, the upper surfaces of both ends of the U-shaped feeding rack are flush with the upper surfaces of the gathered expansion rollers.

[0013] Preferably, both the moving motor and the rotating motor are reduction motors.

[0014] Compared with the related art, the paper feeding device of the label sticker printing machine provided by the present invention has the following beneficial effects:

[0015] Advance preparation and rotation alignment to improve efficiency:

[0016] This device allows the operator to prepare a new roll of label paper on the U-shaped feeder in advance when the previous roll is about to run out. This design avoids the waiting time required to stop the machine to change label paper in the traditional method, significantly improving production efficiency.

[0017] By starting the rotary motor, the new label roll can be accurately aligned with the expansion roller without manual alignment, further shortening the replacement time and reducing the difficulty of operation;

[0018] When feeding paper, the unloading frame moves backward to avoid interference:

[0019] During the paper feeding process, the movement of the movable frame triggers the trapezoidal squeezing block to squeeze the blanking frame, causing the blanking frame to slide backward along the chute; this design ensures that the movable frame will not be restricted by the blanking frame during the paper feeding process, so that it can move smoothly to the position of the expansion roller to complete the feeding of the label paper;

[0020] The backward movement of the unloading frame not only avoids collision with the mobile rack, but also ensures the stability and accuracy of the paper feeding process, further improving production efficiency;

[0021] High degree of automation, reducing manual intervention:

[0022] This device realizes the automation of label paper replacement process through the cooperation of electric push rod and motor. The operator only needs to start the corresponding motor and electric push rod to automatically complete the operations such as stripping, feeding and positioning, without frequent shutdown for manual replacement.

[0023] This highly automated design not only reduces the labor intensity of operators, but also reduces errors and failures caused by human factors, thereby improving overall production efficiency and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic structural diagram of the paper feeding device of the label sticker printing machine provided by the present invention;

[0025] Figure 2 for Figure 1 A schematic diagram of the structure of the threaded rod shown;

[0026] Figure 3 for Figure 1 Schematic diagram of the structure of the tension spring shown.

[0027] Numbers in the figure: 1. Base plate; 2. Workbench; 3. Expansion roller; 4. Guide roller; 5. Moving frame; 6. U-shaped feeding frame; 7. Unloading frame; 8. Paper feeding electric push rod; 9. Cross bar; 10. Guide rod; 11. First moving rod; 12. Second moving rod; 13. Tension spring; 14. Mounting slot; 15. Threaded rod; 16. Moving motor; 17. Trapezoidal extrusion block; 18. Return spring; 19. Paper feeding electric push rod; 20. Connecting piece; 21. Rotating motor. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0029] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0030] See also Figure 1-3, a paper feeding device of a label sticker printing machine, the paper feeding device of the label sticker printing machine includes: a bottom plate 1, a movable frame 5, a blanking frame 7 and an expansion component. The top of the bottom plate 1 is fixedly connected to a workbench 2, an expansion roller 3 is installed on one side of the workbench 2, a guide roller 4 is installed on one side of the workbench 2, a movable frame 5 is installed on the top of the bottom plate 1, and the top of the movable frame 5 is rotatably connected to a U-shaped feeding frame 6. Both ends of the U-shaped feeding frame 6 are sleeved with paper rolls, the top of the bottom plate 1 is slidably connected to the blanking frame 7, and the blanking frame 7 is located at the end of the expansion roller 3. The blanking frame 7 is installed in conjunction with the movable frame 5, an expansion component is installed on one side of the workbench 2, and the expansion The component is installed in coordination with the expansion roller 3. A slide groove is provided at the bottom end of the base plate 1. The blanking frame 7 is slidably connected to the slide groove. A return spring 18 is fixedly connected inside the slide groove. One end of the return spring 18 is fixedly connected to the bottom end of the blanking frame 7. A paper feeding electric push rod 19 is fixedly connected to one side of the movable frame 5. The output end of the paper feeding electric push rod 19 is fixedly connected to a connecting piece 20. A rotating motor 21 is fixedly connected to one side of the movable frame 5. The output end of the rotating motor 21 is fixedly connected to the center of the U-shaped feeding frame 6. The upper surfaces of both ends of the U-shaped feeding frame 6 are flush with the upper surface of the expansion roller 3 after gathering. The movable motor 16 and the rotating motor 21 are both reduction motors.

[0031] It should be noted that: as the stripping electric push rod 8 continues to push, the cross bar 9 and its connected components push the used paper roll core out from the expansion roller 3, and the operator places the pre-prepared new label roll on the U-shaped feeding rack 6 and ensures that it is positioned correctly.

[0032] See also Figure 2 , the expansion assembly includes: a stripping electric push rod 8, a cross bar 9, a guide rod 10, a first moving rod 11, a second moving rod 12 and a tension spring 13. One side of the workbench 2 is fixedly connected to the stripping electric push rod 8, the output end of the stripping electric push rod 8 is fixedly connected to the cross bar 9, and both ends of the cross bar 9 are symmetrically slidably connected to the guide rods 10. One end of the two guide rods 10 is fixedly connected to the first moving rod 11, and the middle part of the two guide rods 10 is slidably connected to the second moving rod 12. The outer side of the two guide rods 10 is provided with a tension spring 13, and the two ends of the tension spring 13 are respectively fixedly connected to one side of the first moving rod 11 and the second moving rod 12;

[0033] It should be noted that: under the action of the tension spring 13, the first moving rod 11 and the second moving rod 12 are close to each other and close to the outer wall of the expansion roller 3, which plays the role of tensioning and fixing the used label paper;

[0034] See also Figure 1-3, a mounting groove 14 is opened at the top of the base plate 1, and a threaded rod 15 is rotatably connected inside the mounting groove 14. A mobile motor 16 is fixedly connected to one side of the base plate 1, and the output end of the mobile motor 16 is fixedly connected to one end of the threaded rod 15. The bottom end of the mobile frame 5 is threadedly connected to the threaded rod 15, and a trapezoidal extrusion block 17 is fixedly connected to one side of the mobile frame 5. The inclined surface of the trapezoidal extrusion block 17 is in contact with a corner of the blanking frame 7;

[0035] It should be noted that: the operator starts the moving motor 16, and its output end drives the threaded rod 15 to rotate; the rotation of the threaded rod 15 causes the moving frame 5 to move along the thread direction and approach the expansion roller 3;

[0036] The paper feeding electric push rod feeds the label paper.

[0037] The working principle of the paper feeding device of the label sticker printing machine provided by the utility model is as follows:

[0038] Initial state:

[0039] When the previous roll of label paper is used up, the device is in a standby state; at this time, the expansion roller 3 is in an open state to receive a new roll of label paper;

[0040] The movable rack 5 is located at the initial position, and no label roll is installed on the U-shaped feeding rack 6;

[0041] The blanking frame 7 is located below the expansion roller 3 and is ready to receive the used paper core;

[0042] Start the stripping electric push rod:

[0043] The operator starts the stripping electric push rod 8, and its output end pushes the cross bar 9 forward;

[0044] The crossbar 9 drives the two guide rods 10 and the first moving rod 11 and the second moving rod 12 connected thereto to move forward together;

[0045] Under the action of the tension spring 13, the first moving rod 11 and the second moving rod 12 move closer to each other and cling to the outer wall of the expansion roller 3, thereby tensioning and fixing the used label paper.

[0046] Paper roll core removal:

[0047] As the stripping electric push rod 8 continues to push, the cross bar 9 and its connected parts push the used paper core out of the expansion roller 3;

[0048] Prepare a new label roll:

[0049] The operator places the pre-prepared new label roll on the U-shaped feeding rack 6 and ensures that it is positioned correctly;

[0050] Start the rotating motor:

[0051] The operator starts the rotary motor 21, and its output end drives the U-shaped feeding frame 6 to rotate so that one side of the new label roll is aligned with the expansion roller 3;

[0052] The mobile frame is close to the expansion roller:

[0053] The operator starts the moving motor 16, and its output end drives the threaded rod 15 to rotate;

[0054] The rotation of the threaded rod 15 causes the moving frame 5 to move along the thread direction and approach the expansion roller 3;

[0055] The paper feeding electric push rod feeds the label paper:

[0056] When the moving frame 5 is close enough to the expansion roller 3, the operator starts the paper feeding electric push rod 19;

[0057] The output end of the paper feeding electric push rod 19 pushes the connecting piece 20, thereby pushing the label paper roll on the U-shaped feeding rack 6 to move toward the expansion roller 3;

[0058] The label paper is fed between the expansion rollers 3 to complete the replacement process;

[0059] Trapezoidal extrusion block extrusion blanking frame:

[0060] During the movement of the moving frame 5, the inclined surface of the trapezoidal extrusion block 17 contacts and squeezes a corner of the blanking frame 7;

[0061] This squeezing action causes the blanking frame 7 to slide along the chute and is acted upon by the elastic force of the return spring 18, ensuring that the blanking frame 7 does not collide or interfere with the movable frame 5;

[0062] Complete the replacement:

[0063] At this point, the new label paper has been successfully fed between the expansion rollers 3 and is ready for subsequent printing work;

[0064] The operator can turn off all motors and electric actuators to return the unit to standby mode.

[0065] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A paper feeding device for a label sticker printing machine, characterized in that: include: A bottom plate (1), the top of the bottom plate (1) is fixedly connected to a workbench (2), an expansion roller (3) is installed on one side of the workbench (2), and a guide roller (4) is installed on one side of the workbench (2); A movable frame (5) is installed on the top of the bottom plate (1), and the top of the movable frame (5) is rotatably connected to a U-shaped feeding frame (6), and both ends of the U-shaped feeding frame (6) are sleeved with paper rolls; A blanking frame (7), the top end of the bottom plate (1) is slidably connected to the blanking frame (7), and the blanking frame (7) is located at the end of the expansion roller (3), and the blanking frame (7) is installed in conjunction with the movable frame (5); An expansion component is installed on one side of the workbench (2), and the expansion component is installed in coordination with the expansion roller (3).

2. The paper feeding device of the label sticker printing machine according to claim 1, characterized in that: The expansion assembly comprises: a stripping electric push rod (8), a cross bar (9), a guide rod (10), a first moving rod (11), a second moving rod (12) and a tension spring (13); one side of the workbench (2) is fixedly connected to the stripping electric push rod (8); the output end of the stripping electric push rod (8) is fixedly connected to the cross bar (9); both ends of the cross bar (9) are symmetrically slidably connected to the guide rods (10); one end of the two guide rods (10) is fixedly connected to the first moving rod (11); the middle part of the two guide rods (10) is slidably connected to the second moving rod (12); the outer sides of the two guide rods (10) are provided with tension springs (13); the two ends of the tension springs (13) are fixedly connected to one side of the first moving rod (11) and the second moving rod (12), respectively.

3. The paper feeding device of the label sticker printing machine according to claim 1, characterized in that: A mounting groove (14) is provided at the top of the base plate (1), a threaded rod (15) is rotatably connected inside the mounting groove (14), a movable motor (16) is fixedly connected to one side of the base plate (1), an output end of the movable motor (16) is fixedly connected to one end of the threaded rod (15), the bottom end of the movable frame (5) is threadedly connected to the threaded rod (15), a trapezoidal extrusion block (17) is fixedly connected to one side of the movable frame (5), and an inclined surface of the trapezoidal extrusion block (17) is in contact with a corner of the blanking frame (7).

4. The paper feeding device of the label sticker printing machine according to claim 1, characterized in that: A chute is provided at the bottom end of the bottom plate (1), the blanking frame (7) is slidably connected to the chute, a return spring (18) is fixedly connected inside the chute, and one end of the return spring (18) is fixedly connected to the bottom end of the blanking frame (7).

5. The paper feeding device of the label sticker printing machine according to claim 1, characterized in that: One side of the movable frame (5) is fixedly connected to a paper feeding electric push rod (19), and the output end of the paper feeding electric push rod (19) is fixedly connected to a connecting piece (20). One side of the movable frame (5) is fixedly connected to a rotating motor (21), and the output end of the rotating motor (21) is fixedly connected to the center of the U-shaped feeding frame (6).

6. The paper feeding device of the label sticker printing machine according to claim 1, characterized in that: The upper surfaces of both ends of the U-shaped feeding frame (6) are flush with the upper surface of the gathered expansion roller (3).

7. The paper feeding device of the label sticker printing machine according to claim 5, characterized in that: Both the moving motor (16) and the rotating motor (21) are reduction motors.

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