Label cutting limiting mechanism

Abstract

The utility model relates to label cutting technical field, and disclose a kind of label cutting limiting mechanism, including work tank, control box and workbench being fixedly arranged in the top of work tank, the cutting knife for cutting label tape being arranged in the top of workbench, two winding rollers located workbench both sides, two the winding roller is respectively used for unwinding and winding label tape, the winding roller includes two limit rollers, a center roller and an adjusting roller, the side of two the limit roller adjacent is fixedly connected with center roller, the adjusting roller coaxial sleeve is located in center roller inside and can axially slide, two the limit roller is symmetrical conical platform shape, and the axial section of the winding roller is bowknot shape, the utility model is by adopting bowknot shape winding roller, cooperate visual detection sensor, realize label tape automatic centering and dynamic correction, elastic slide strip vibration reduction and noise reduction, electric pushrod quick adjustment, make cutting precision improve, effectively solve the problem such as deviation, burr etc.

Description

Technical Field

[0001] This utility model relates to the field of label cutting, and in particular to a label cutting limiting mechanism. Background Technology

[0002] In the application of label cutting equipment, it is often necessary to cut label tape into rolls of different sizes according to actual usage requirements. During this process, the label tape between the take-up and untake-up rollers needs to be cut. The stability of the take-up and untake-up rollers directly affects the cutting accuracy and material utilization. When traditional cylindrical take-up and untake-up rollers are running at high speed, the material is prone to lateral deviation (serpentine movement) due to uneven tension or inertia, resulting in problems such as cutting position deviation and rough edges. In severe cases, it can even cause material waste and equipment downtime for adjustment. In the existing technology, although mechanical baffles or photoelectric sensors are used for limiting, mechanical baffles are prone to damaging materials and cannot be dynamically adjusted. Photoelectric correction systems have low recognition rate for transparent / reflective materials and have a response delay. Especially during the unwinding and rewinding process, traditional rollers have difficulty automatically guiding the material to the center, resulting in unstable label tape position during cutting and affecting cutting quality.

[0003] Therefore, a label cutting and limiting mechanism was designed. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing a label cutting limiting mechanism. It solves the problems that traditional cylindrical take-up and untake-up rollers can easily cause material deviation during label cutting, resulting in inaccurate cutting and rough edges. Existing mechanical baffles can easily damage materials and are not conducive to stable cutting.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A label cutting limiting mechanism includes a work box, a control box and a worktable fixedly installed on the top of the work box, a cutting knife installed on the top of the worktable for cutting label tape, and two winding rollers located on both sides of the worktable, the two winding rollers being used for unwinding and rewinding the label tape respectively.

[0006] Preferably, the winding roller includes two limiting rollers, a central roller, and an adjusting roller. The two limiting rollers are fixedly connected to the central roller on adjacent sides, and the adjusting roller is coaxially sleeved inside the central roller and can slide axially.

[0007] Preferably, the two limiting rollers are symmetrically shaped conical truncated cones, and the axial cross section of the winding roller is bow-shaped, with the cone angle α of the limiting roller being 15°-25°.

[0008] Preferably, the inner wall of the central roller is provided with two symmetrical axial grooves, and the outer wall of the adjusting roller is provided with two sliding strips that match the grooves.

[0009] Preferably, the slide bar slides in conjunction with the slide groove, and T-shaped plates are provided at both ends of the slide bar to prevent the center roller from separating from the adjusting roller.

[0010] Preferably, the surfaces of the slider and the T-shaped plate are covered with an elastic rubber layer.

[0011] Preferably, the two ends of the limiting roller are rotatably connected to two support frames via bearings, and a motor for driving the winding roller to rotate is fixed on the support frame.

[0012] Preferably, the bottoms of the two support frames are slidably mounted on the same fixed plate, and the fixed plate has an upwardly protruding arc-shaped support plate at its center.

[0013] Preferably, the top of the support plate is an arc surface to support the wrapped label tape; two electric actuators are provided on each side of the support plate, and the telescopic ends of the electric actuators are fixedly connected to the support frame to drive the two support frames to move towards each other or away from each other.

[0014] Preferably, a connecting rod is fixedly provided on the outer side of each of the two support frames, and a vision sensor is fixedly installed on the end of each of the two connecting rods that is close to each other. The vision sensor is used to detect whether the label tape is offset.

[0015] Compared with the prior art, the present invention has the following beneficial effects: This invention achieves high-precision cutting through an innovative bow-shaped winding roller design and a vision inspection system. The winding roller combines a 15°-25° cone-angle limiting roller with an adjustable center roller, along with an arc-shaped support plate and an electric push rod adjustment mechanism. This ensures automatic centering of the label tape and maintains stable tension. A vision sensor monitors the tape position in real time, achieving dynamic correction through closed-loop control. Elastic rubber-coated sliders ensure smooth adjustment and reduce vibration and noise. The modular support frame driven by the electric push rod enables rapid changeovers, improving adjustment efficiency. This mechanism is particularly suitable for cutting flexible electronic labels, effectively solving problems such as deviation, burrs, and low changeover efficiency, offering high cutting accuracy and strong stability. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram showing the structural relationship between the winding roller and the support frame of this utility model; Figure 3 This is a schematic diagram showing the structural relationship between the center roller and the adjusting roller of this utility model; Figure 4 This is a schematic diagram showing the structural relationship between the limiting roller and the center roller of this utility model.

[0018] Drawing number descriptions: 1. Work box; 11. Control box; 12. Cutting knife; 13. Worktable; 2. Winding roller; 21. Limiting roller; 22. Center roller; 221. Slide groove; 23. Adjusting roller; 231. Slide bar; 232. T-shaped plate; 3. Motor; 4. Support frame; 41. Connecting rod; 42. Vision sensor; 5. Fixing plate; 51. Support plate; 6. Electric actuator. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings.

[0020] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will be apparent to those skilled in the art. The basic principles of the present invention defined in the following description can be used in other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0021] Those skilled in the art should understand that in the disclosure of this utility model, the terms "longitudinal", "lateral", "up", "down", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or position based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this utility model and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0022] It is understood that the term "a" should be understood as "at least one" or "one or more," that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0023] Please see Figure 1-4 A label cutting limiting mechanism includes a work box 1, a control box 11 and a worktable 13 fixedly installed on the top of the work box 1, a cutting blade 12 installed on the top of the worktable 13 for cutting label tape, and two winding rollers 2 located on both sides of the worktable 13, the two winding rollers 2 being used for unwinding and rewinding label tape respectively. The winding roller 2 includes two limiting rollers 21, a central roller 22, and an adjusting roller 23. The adjacent sides of the two limiting rollers 21 are fixedly connected to the central roller 22. The adjusting roller 23 is coaxially sleeved inside the central roller 22 and can slide axially. The two limiting rollers 21 are symmetrically conical and the axial cross section of the winding roller 2 is bow-shaped. The inner wall of the central roller 22 is provided with two symmetrical axial grooves 221. The outer wall of the adjusting roller 23 is provided with two sliding strips 231 that match the grooves 221. The sliding strips 231 slide in cooperation with the grooves 221. T-shaped plates 232 are provided at both ends of the sliding strips 231 to prevent the central roller 22 from separating from the adjusting roller 23. The surfaces of the sliding strips 231 and the T-shaped plates 232 are covered with an elastic rubber layer. The two ends of the limiting roller 21 are rotatably connected to two support frames 4 via bearings. A motor 3 that drives the winding roller 2 to rotate is fixed on the support frame 4. The bottom of the two support frames 4 is slidably set on the same fixed plate 5. The center of the fixed plate 5 is provided with an upwardly protruding arc-shaped support plate 51. The top of the support plate 51 is an arc surface used to support the wrapped label tape. Two electric push rods 6 are provided on each side of the support plate 51. The telescopic end of the electric push rod 6 is fixedly connected to the support frame 4 and is used to drive the two support frames 4 to move towards each other or away from each other. A connecting rod 41 is fixedly set on the outer side of each of the two support frames 4. A vision sensor 42 is fixedly installed on the end of the two connecting rods 41 that is close to each other. The vision sensor 42 is used to detect whether the label tape is offset.

[0024] The cone angle α of the conical platform limiting roller 21 is controlled within the range of 15°-25°; This label cutting and limiting mechanism achieves high-precision cutting and stable conveying of the label tape through an innovative bow-shaped winding roller 2 design and a vision sensor 42. The label tape is drawn from the unwinding winding roller 2, cut to a fixed length by the cutting blade 12 on the worktable 13, and then retrieved by the rewinding winding roller 2. The winding roller 2 adopts a combination structure of a conical limiting roller 21 and an adjustable center roller 22. The axial sliding of the adjusting roller 23 adapts to label tapes of different widths. Combined with the gradually expanding guide surface formed by the bow-shaped cross-section, it effectively prevents tape deviation. The arc-shaped support surface of the support plate 51 and the adjustable support frame 4 driven by the electric push rod 6 work together to maintain constant tension during the winding process. The vision sensor 42 monitors the edge position of the label tape in real time. When deviation is detected, the control box 11 adjusts the speed of the motor 3 or the stroke of the electric push rod 6 for dynamic correction. It can quickly adapt to label tapes of different widths. After adjustment, the control box 11 can be used to... 1. The cutting blade 12 moves downwards to cut the label tape, ensuring that the label tape is centered during cutting. The mechanism uses a bow-shaped winding roller 2 cross-section design to keep the material in the center position, resulting in high correction accuracy. The elastic rubber-coated slider 231 and T-shaped plate 232 ensure smooth sliding and absorb vibration. The linkage design between the electric push rod 6 and the support frame 4 enables rapid adjustment of the winding roller 2, shortening the changeover time and improving adjustment efficiency. The arc-shaped support plate 51 provides uniform support force for the label tape, enhancing stability. The sliding fit structure between the center roller 22 and the adjusting roller 23 ensures rigidity while achieving continuous diameter adjustment. This mechanism is particularly suitable for cutting high-precision electronic labels, solving the pain points of material deviation, burrs, and low changeover efficiency in existing technologies.

[0025] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

Claims

1. A label cutting stop mechanism, characterized by, Includes a work box (1), a control box (11) fixedly installed on the top of the work box (1) and a worktable (13), a cutting knife (12) installed on the top of the worktable (13) for cutting label tape, and two winding rollers (2) located on both sides of the worktable (13), the two winding rollers (2) being used for unwinding and rewinding label tape respectively; The winding roller (2) includes two limiting rollers (21), a center roller (22), and an adjusting roller (23). The two limiting rollers (21) are fixedly connected to the center roller (22) on their adjacent sides. The adjusting roller (23) is coaxially sleeved inside the center roller (22) and can slide axially. The two limiting rollers (21) are symmetrically conical, and the axial cross section of the winding roller (2) is bow-shaped. The cone angle α of the limiting roller (21) is 15°-25°. The two ends of the limiting roller (21) are rotatably connected to two support frames (4) through bearings. A motor (3) for driving the winding roller (2) to rotate is fixed on the support frame (4). The bottoms of the two support frames (4) are slidably set on the same fixed plate (5). The center of the fixed plate (5) is provided with an upwardly protruding arc-shaped support plate (51). The top of the support plate (51) is an arc surface, which is used to support the wrapped label tape. Two electric push rods (6) are provided on each side of the support plate (51). The telescopic end of the electric push rod (6) is fixedly connected to the support frame (4) and is used to drive the two support frames (4) to move towards each other or away from each other. A connecting rod (41) is fixedly provided on the outer side of each of the two support frames (4). A vision sensor (42) is fixedly installed on the end of each of the two connecting rods (41) that is close to each other. The vision sensor (42) is used to detect whether the label tape is offset.

2. A label cutting stop mechanism according to claim 1, wherein: The inner wall of the center roller (22) is provided with two symmetrical axial grooves (221), and the outer wall of the adjusting roller (23) is provided with two sliding bars (231) that match the grooves (221).

3. A label cutting stop mechanism according to claim 2, wherein: The slide bar (231) is slidably engaged with the slide groove (221), and T-shaped plates (232) are provided at both ends of the slide bar (231) to prevent the center roller (22) from separating from the adjusting roller (23).

4. A label cutting stop mechanism according to claim 3, wherein: The surfaces of the slider (231) and the T-shaped plate (232) are covered with an elastic rubber layer.

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