Label delivery adjustment mechanism for a double-sided labelling machine

Abstract

The utility model relates to a labeler technical field, concretely is a kind of label conveying adjustment mechanism for double-sided labeler, it includes: mounting table, limit axle, adjusting groove, guide roller, limit disc, connecting rod and guide plate. Limit axle top end has adjusting groove, guide roller is set on it, limit disc slidingly sets guide roller, and lower special fluorine layer is equipped. Limit disc is connected with guide plate by connecting rod, guide plate is set on limit axle, adjusting part is composed of adjusting block and adjusting assembly, for driving adjusting block inserts or separate adjusting groove, locking or unlocking guide plate position. Adjusting guide plate position can drive limit disc to slide, and adapt to different width label. The mechanism flexible adjusting limit disc height, solve guide roller adaptability problem, avoid label tension uneven, trajectory deviation, prevent wrinkling, paste skew, improve label consistency and reliability. Structure is simple, and it is convenient to operate, need not special tool, and adaptability is strong.

Description

Technical Field

[0001] This utility model relates to the field of labeling machine technology, specifically to a label conveying and adjusting mechanism for a double-sided labeling machine. Background Technology

[0002] Double-sided labeling machines are widely used automated equipment in the packaging industry. Their core function is to simultaneously and precisely affix two labels to two opposite sides of a product. The equipment mainly consists of a feeding mechanism, a conveying mechanism, a labeling head, and a receiving mechanism. Several guide rollers are installed along the conveying path. These guide rollers rotate under the control of a limiting shaft, forming the transport framework for the label tape. Their core function is to guide and constrain the tape's trajectory, ensuring smooth conveying and initial tension stability by forming specific wrap angles and contact surfaces. During operation, the label tape is drawn from the feeding tray and sequentially passes through the guide rollers. During this process, the guide rollers rotate under the precise axial positioning of the limiting shaft. Through the friction and limiting action of their surfaces, they support and guide the tape along the preset path, ultimately ensuring its accurate arrival at the labeling station for peeling and application.

[0003] In existing technologies, the label tape of double-sided labeling machines mainly relies on the aforementioned guide roller system for conveying and initial correction and limiting. However, the adaptability of this system is limited: the installation height and relative position of the guide rollers and their limiting shafts are usually relatively fixed. When the labeling production demand changes to labels of different widths, if the same set of guide rollers is continued for guidance, a series of problems will arise due to the mismatch between the contact and interaction relationship between the rollers and the tapes of different widths. Narrow tapes may wobble excessively due to insufficient support, while wide tapes may be excessively constrained due to improper envelope. This mismatch directly leads to uneven tension distribution and deviation of the guiding angle during the operation of the tape. As a result, the label is prone to longitudinal or lateral offset, surface wrinkling, or overall misalignment during the final application stage, which seriously restricts the labeling accuracy and product appearance quality, and ultimately reduces the stability and consistency of label conveying and overall machine operation. Utility Model Content

[0004] The purpose of this invention is to provide a label conveying and adjusting mechanism for a double-sided labeling machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a label conveying and adjusting mechanism for a double-sided labeling machine, comprising: a mounting platform, the upper surface of which is fixedly connected to the bottom end of a limiting shaft, a plurality of adjusting grooves being opened on the outer ring surface of the top end of the limiting shaft along the axial direction, and a guide roller being provided on the lower side of the adjusting groove, the guide roller being rotatably sleeved on the limiting shaft; A limiting disc is slidably sleeved on the top of the guide roller. The lower surface of the limiting disc is provided with a Teflon layer. The upper surface of the limiting disc is fixedly connected to the bottom end of the connecting rod. A guide plate is fixedly connected to the top of the connecting rod. The guide plate is slidably sleeved on the limiting shaft. An adjustment part is provided on the upper surface of the guide plate. The adjustment part includes an adjustment block and an adjustment assembly. The adjustment assembly is used to drive the adjustment block to selectively insert into or disengage from the adjustment groove in order to lock or unlock the axial position of the guide plate on the limiting shaft. The axial position of the guide plate is adjusted by the adjustment unit, which drives the limiting disc to slide on the guide roller to accommodate labels of different widths. Preferably, the upper surface of the guide roller abuts against the lower surface of the limiting nut, and the limiting nut is threaded onto the limiting shaft.

[0006] Preferably, the adjustment component includes a set of upright plates, two of which are symmetrically arranged on both sides of the upper surface of the guide plate and are fixedly connected to the guide plate.

[0007] Preferably, guide blocks are symmetrically fixedly installed on one side of the upright plate near the limiting shaft, and a slide rail is fixedly provided between the two guide blocks.

[0008] Preferably, the slide rail is slidably connected to one side of the slider, and the other side of the slider is slidably connected to the roller through an arc-shaped surface. The roller is rotatably connected to one end of the U-shaped frame through a limiting pin, and the other end of the U-shaped frame is fixedly connected to the middle of the adjusting block. Guide rods are fixedly connected to both sides of the adjusting block, and the guide rods are slidably sleeved between the guide block and the upright plate. The adjusting block and the guide block are fixedly connected by a first spring.

[0009] Preferably, a limiting seat is provided at the top of the upright plate, the limiting seat is fixedly installed on the upright plate, and a U-shaped rod is provided on the upper side of the limiting seat.

[0010] Preferably, a limiting rod is fixedly connected to both ends of the bottom of the U-shaped rod. The limiting rod passes through the limiting seat and is fixedly connected to the slider. The limiting rod is slidably sleeved in the limiting seat. A second spring is fixedly connected between the limiting rod and the limiting seat.

[0011] Compared with the prior art, the beneficial effects of this utility model are: By incorporating a height-adjustable limiting disc structure, the problem of insufficient adaptability of the guide roller system due to variations in label width is effectively solved. This mechanism can quickly adjust the relative position of the limiting disc on the guide roller according to different label widths, ensuring that the width of the conveyor channel matches the actual width of the label. This fundamentally avoids uneven label tension distribution and trajectory deviation caused by improper support or excessive constraint. This improvement ensures that the label remains stable and centered throughout the conveying process, fundamentally preventing quality problems such as wrinkling and misalignment during labeling, improving the consistency and reliability of the labeling process. Furthermore, the overall structure is easy to operate, requiring no special tools for adjustment, thus enhancing the equipment's adaptability to different production needs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a first bottom view of the internal structure of this utility model; Figure 3 This is a second bottom view of the internal structure of this utility model; Figure 4 This is a top view of the internal structure of this utility model.

[0013] In the diagram: 1. Mounting platform; 2. Limiting shaft; 3. Adjusting groove; 4. Guide roller; 5. Limiting disc; 6. Teflon layer; 7. Connecting rod; 8. Guide plate; 9. Adjusting block; 10. Limiting nut; 11. Vertical plate; 12. Guide block; 13. Slide rail; 14. Slider; 15. Roller; 16. Limiting pin; 17. U-shaped frame; 18. Guide rod; 19. First spring; 20. Limiting seat; 21. U-shaped rod; 22. Limiting rod; 23. Second spring. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0015] Example 1: Please refer to Figures 1-4This utility model provides a technical solution: a label conveying and adjusting mechanism for a double-sided labeling machine, comprising: a mounting platform 1, which is set on the labeling machine to facilitate the support and installation of guide rollers 4; the upper surface of the mounting platform 1 is fixedly connected to the bottom end of a limiting shaft 2; the outer ring surface of the top end of the limiting shaft 2 is provided with a plurality of adjusting grooves 3 along the axial direction, the adjusting grooves 3 being symmetrically arranged; a guide roller 4 is provided on the lower side of the adjusting grooves 3; the guide roller 4 is rotatably sleeved on the limiting shaft 2; the limiting shaft 2 limits the rotation of the guide roller 4; a limiting disc 5 is slidably sleeved on the top end of the guide roller 4; a Teflon layer 6 is provided on the lower surface of the limiting disc 5; the Teflon layer 6 increases the gloss of the lower surface of the limiting disc 5. The slippage reduces friction between the label paper and the limiting disc 5, making the label paper move more smoothly. The upper surface of the limiting disc 5 is fixedly connected to the bottom end of the connecting rod 7, and the top end of the connecting rod 7 is fixedly connected to the guide plate 8. The guide plate 8 is slidably sleeved on the limiting shaft 2, and the limiting shaft 2 guides and limits the guide plate 8. The upper surface of the guide plate 8 is provided with an adjustment part, which includes an adjustment block 9 and an adjustment assembly. The adjustment assembly is used to drive the adjustment block 9 to selectively insert or disengage from the adjustment groove 3 to lock or unlock the axial position of the guide plate 8 on the limiting shaft 2. By adjusting the axial position of the guide plate 8 through the adjustment part, the limiting disc 5 is driven to slide on the guide roller 4 to adapt to labels of different widths.

[0016] In use, the limiting shaft 2 is fixedly installed on the mounting platform 1, and then the guide roller 4 is sleeved on the limiting shaft 2. The limiting shaft 2 guides and limits the guide roller 4, thereby conveying the label paper tape under the rotation of the guide roller 4. The adjustment unit is operated according to the width of the label paper tape. The adjustment component is adjusted so that the adjustment block 9 can be selectively inserted into the adjustment groove 3 at different positions, thereby indirectly locking the guide plate 8 through the adjustment block 9. The guide plate 8 is fixedly connected to the limiting plate 5 through the connecting rod 7, thereby limiting and fixing the limiting plate 5. This adjusts the installation height of the limiting plate 5 on the limiting shaft 2, so that the limiting plate 5 can adapt to label paper tapes of different widths, avoiding uneven tension distribution of the tape during operation, and preventing longitudinal or lateral offset, surface wrinkling or overall misalignment in the final application stage, thus improving the labeling stability.

[0017] Example 2: Based on Example 1, the upper surface of the guide roller 4 abuts against the lower surface of the limiting nut 10. The limiting nut 10 is threaded onto the limiting shaft 2, thereby limiting the guide roller 4 through the limiting nut 10, ensuring its stability during rotation, and facilitating the subsequent disassembly of the guide roller 4.

[0018] Example 3: Based on Example 2, the adjustment assembly includes a set of upright plates 11. Two upright plates 11 are symmetrically arranged on both sides of the upper surface of the guide plate 8 and are fixedly connected to the guide plate 8. Guide blocks 12 are symmetrically fixedly installed on the side of the upright plates 11 near the limiting shaft 2. A slide rail 13 is fixedly provided between the two guide blocks 12. The slide rail 13 is slidably connected to one side of the slider 14 and limits the slider 14. The other side of the slider 14 is slidably connected to the roller 15 through an arc-shaped surface. The roller 15 is rotatably connected to one end of the U-shaped frame 17 through a limiting pin 16. The U-shaped frame 17 limits and supports the roller 15. The other end of the U-shaped frame 17 is fixedly connected to the middle of the adjustment block 9. Guide rods 18 are fixedly connected to both sides of the adjustment block 9. The guide rods 18 are slidably sleeved between the guide block 12 and the upright plate 11. The guide block 12 guides and limits the guide rods 18. The adjustment block 9 and the guide block 12 are fixedly connected by a first spring 19.

[0019] A limiting seat 20 is provided at the top of the upright plate 11. The limiting seat 20 is fixedly installed on the upright plate 11. A U-shaped rod 21 is provided on the upper side of the limiting seat 20. A limiting rod 22 is fixedly connected to both ends of the bottom of the U-shaped rod 21. The limiting rod 22 passes through the limiting seat 20 and is fixedly connected to the slider 14. Thus, the slider 14 can be driven to slide through the limiting rod 22. The limiting rod 22 is slidably sleeved in the limiting seat 20. The limiting seat 20 limits and supports the limiting rod 22. A second spring 23 is fixedly connected between the limiting rod 22 and the limiting seat 20.

[0020] When the position of the limiting plate 5 needs to be adjusted, in the initial state, the adjusting block 9 is engaged in a certain adjusting groove 3. At this time, by holding the limiting plate 5, the U-shaped rod 21 is pulled upward, causing the U-shaped rod 21 to drive the limiting rod 22 to move upward under the limitation of the limiting seat 20. During the movement of the limiting rod 22, the second spring 23 is compressed. At the same time, the limiting rod 22 drives the slider 14 to slide upward under the limitation of the slide rail 13. The slider 14 slides between the arc surface on it and the roller 15. At the same time, in the initial state, the first spring 19 is in a compressed state. When the roller 15 slides along the surface of the slider 14, the first spring 19 is released from the compressed state due to the concave arc surface of the roller 15. At this time, under the reverse elastic force of the first spring 19, and in conjunction with the guide block 12, the guide rod 1 The guide plate 8 is positioned so that the U-shaped frame 17 drives the adjusting block 9 to move away from the adjusting groove 3 until it slides out of the adjusting groove 3. At this time, the guide plate 8 can be moved so that it slides along the axis on the limiting shaft 2. This allows the height of the limiting plate 5 to be adjusted through the connecting rod 7. After the adjustment is completed, the U-shaped rod 21 is pushed in the opposite direction so that the second spring 23 is reset. Through the sliding of the roller 15 and the slider 14, the adjusting block 9 is pressed back into the adjusting groove 3, thus indirectly limiting the limiting plate 5. This facilitates the conveying of label paper tapes of different widths. The second spring 23 and the first spring 19 are industrial-grade springs with good fatigue resistance. They can be repeatedly stretched for long-term use and can be replaced after long-term use. The elastic force of the second spring 23 is much greater than that of the first spring 19.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A label conveying and adjusting mechanism for a double-sided labeling machine, comprising a mounting platform (1), characterized in that: The upper surface of the mounting platform (1) is fixedly connected to the bottom end of the limiting shaft (2). The outer ring surface of the top end of the limiting shaft (2) is provided with several adjustment grooves (3) along the axial direction. A guide roller (4) is provided on the lower side of the adjustment groove (3). The guide roller (4) is rotated and sleeved on the limiting shaft (2). A limiting disc (5) is slidably sleeved on the top of the guide roller (4). A Teflon layer (6) is provided on the lower surface of the limiting disc (5). The upper surface of the limiting disc (5) is fixedly connected to the bottom end of the connecting rod (7). A guide plate (8) is fixedly connected to the top of the connecting rod (7). The guide plate (8) is slidably sleeved on the limiting shaft (2). An adjustment part is provided on the upper surface of the guide plate (8). The adjustment part includes an adjustment block (9) and an adjustment assembly. The adjustment assembly is used to drive the adjustment block (9) to selectively insert or disengage from the adjustment groove (3) to lock or unlock the axial position of the guide plate (8) on the limiting shaft (2). The axial position of the guide plate (8) is adjusted by the adjustment part, which drives the limiting plate (5) to slide on the guide roller (4) to adapt to labels of different widths.

2. The label conveying and adjusting mechanism for a double-sided labeling machine according to claim 1, characterized in that: The upper surface of the guide roller (4) abuts against the lower surface of the limiting nut (10), and the limiting nut (10) is threaded onto the limiting shaft (2).

3. The label conveying and adjusting mechanism for a double-sided labeling machine according to claim 2, characterized in that: The adjustment assembly includes a set of upright plates (11), with two upright plates (11) symmetrically arranged on both sides of the upper surface of the guide plate (8) and fixedly connected to the guide plate (8).

4. A label conveying and adjusting mechanism for a double-sided labeling machine according to claim 3, characterized in that: The upright plate (11) is symmetrically fixedly installed with guide blocks (12) on one side near the limiting shaft (2), and a slide rail (13) is fixedly provided between the two guide blocks (12).

5. A label conveying and adjusting mechanism for a double-sided labeling machine according to claim 4, characterized in that: The slide rail (13) is slidably connected to one side of the slider (14), and the other side of the slider (14) is slidably connected to the roller (15) through the arc surface. The roller (15) is rotatably connected to one end of the U-shaped frame (17) through the limit pin (16). The other end of the U-shaped frame (17) is fixedly connected to the middle of the adjusting block (9). Guide rods (18) are fixedly connected to both sides of the adjusting block (9). The guide rods (18) are slidably sleeved between the guide block (12) and the upright plate (11). The adjusting block (9) and the guide block (12) are fixedly connected by the first spring (19).

6. A label conveying and adjusting mechanism for a double-sided labeling machine according to claim 4, characterized in that: The top of the upright plate (11) is provided with a limiting seat (20), which is fixedly installed on the upright plate (11). A U-shaped rod (21) is provided on the upper side of the limiting seat (20).

7. A label conveying and adjusting mechanism for a double-sided labeling machine according to claim 6, characterized in that: A limiting rod (22) is fixedly connected to both ends of the bottom of the U-shaped rod (21). The limiting rod (22) passes through the limiting seat (20) and is fixedly connected to the slider (14). The limiting rod (22) is slidably sleeved in the limiting seat (20). A second spring (23) is fixedly connected between the limiting rod (22) and the limiting seat (20).

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