Packaging box surface labeling device
By combining the positioning mechanism and the labeling mechanism, the problem of inaccurate positioning during the automatic labeling process of packaging boxes is solved, achieving high-precision label application, ensuring accurate label positioning and tight adhesion, and improving the quality of labeling on the surface of packaging boxes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI TANWEI PACKAGING PROD CO LTD
- Filing Date
- 2025-05-14
- Publication Date
- 2026-05-01
AI Technical Summary
In existing technologies, packaging boxes are difficult to position accurately during automatic labeling, resulting in large errors and failing to meet the requirements for high-precision labeling.
The design employs a combination of positioning and label pressing mechanisms, including components such as a motor, hydraulic cylinder, positioning plate, and pressure rod. The packaging box is transported by a conveyor belt, and the motor drives a bidirectional threaded rod and hydraulic cylinder to achieve precise positioning of the packaging box. The pressure rod is driven by the meshing of a rack and pinion to press the label, ensuring that the label adheres tightly.
It enables precise labeling on the surface of packaging boxes, ensuring accurate label placement and tight adhesion that prevents labels from falling off or wrinkling, thus improving the accuracy and quality of labeling.
Smart Images

Figure CN224184708U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of labeling technology for packaging box surfaces, specifically, to a labeling device for packaging box surfaces. Background Technology
[0002] Labeling on packaging refers to affixing labels, barcodes, QR codes, or other markings to the surface of packaging boxes, typically to provide product information, brand identification, shipping information, or to meet legal compliance requirements. This process not only affects the product's appearance design but is also closely related to product marketing, logistics management, and consumer experience.
[0003] In existing technologies, when packaging boxes need to be labeled, the labeling is done automatically on the production line. However, it is difficult to solve the positioning function, which leads to unavoidable errors and cannot meet the product requirements for high labeling accuracy. Therefore, we propose a labeling device for the surface of packaging boxes. Utility Model Content
[0004] This utility model proposes a labeling device for the surface of a packaging box, which solves the problem of not being able to position the packaging box in related technologies.
[0005] The technical solution of this utility model is as follows:
[0006] This utility model is a labeling device for packaging box surface, including a workbench, a work box fixedly connected to the top of the workbench, a conveyor belt provided on the top of the workbench, a labeling component provided inside the work box, and a positioning mechanism provided inside the work box.
[0007] The positioning mechanism includes a motor, the side of which is fixedly connected to the inner wall of the work box. A bidirectional threaded rod is fixedly connected to the output end of the motor. A threaded sleeve is threadedly connected to the circumferential surface of the bidirectional threaded rod. A push rod is fixedly connected to the top of the threaded sleeve. A hydraulic cylinder is fixedly connected inside the work box. A force-bearing rod is slidably connected to one end of the hydraulic cylinder via a piston. A hydraulic rod is driven by the hydraulic cylinder. A positioning plate is fixedly connected to the end of the hydraulic rod away from the side of the hydraulic cylinder.
[0008] Optionally, a return spring is fixedly connected to the side of the hydraulic cylinder. The end of the return spring away from the side of the hydraulic cylinder is fixedly connected to the circumferential surface of the force-bearing rod. The purpose is to ensure that the force-bearing rod can automatically reset when it is not under force, thereby reducing manual intervention.
[0009] Optionally, a limiting plate is fixedly connected inside the working box. The side of the limiting plate penetrates the circumferential surface of the bidirectional threaded rod. A limiting shaft is fixedly connected to the side of the limiting plate. The circumferential surface of the limiting shaft penetrates and slides through the side of the threaded sleeve. The purpose of this is to limit the displacement distance of the threaded sleeve and prevent the threaded sleeve from rotating during its movement.
[0010] Optionally, one end of the force-bearing rod is located on the displacement trajectory of the push rod, and the number of hydraulic rods and positioning plates is set to two, and they are symmetrical to each other along the vertical central axis of the hydraulic cylinder. The purpose is to ensure that the movement of the push rod can push the force-bearing rod, and to improve the positioning effect through the two positioning plates.
[0011] Optionally, the working box is equipped with a label pressing mechanism, which includes a connecting rod. One end of the connecting rod is fixedly connected to the side of the threaded sleeve, and the end of the connecting rod away from the side of the threaded sleeve is fixedly connected to a rack. A support shaft is rotatably connected inside the working box, and a gear is fixedly passed through the circumferential surface of the support shaft. A pressure rod is fixedly connected to the circumferential surface of the support shaft. A sliding groove is opened inside the working box, and a sliding column is slidably connected inside the sliding groove. A pressure block is fixedly connected to the end of the sliding column away from the inside of the sliding groove. The purpose is to ensure that the label is tightly attached to the packaging box.
[0012] Optionally, a tension spring is fixedly connected inside the working box, and the end of the tension spring away from the inner wall of the working box is fixedly connected to the top of the pressure block. The purpose is to ensure that the pressure block can automatically reset and reduce manual intervention.
[0013] Optionally, the top of the pressure block is elastically connected to the inner wall of the working box by a tension spring, and the circumferential surface of the sliding column is located on the displacement trajectory of the pressure rod. The purpose is to ensure that the rotation of the pressure rod can press the sliding column.
[0014] Optionally, the side of the rack meshes with the circumferential surface of the gear, the initial state of the tension spring is relaxed, and the side of the pressure block is close to the outlet of the working box. The purpose is to ensure that the movement of the rack can drive the gear to rotate.
[0015] The working principle and beneficial effects of this utility model are as follows:
[0016] 1. In this utility model, through the cooperation of components such as the motor, hydraulic cylinder, and positioning plate of the positioning mechanism, when it is necessary to label the surface of the packaging box, the worker places the packaging box on top of the conveyor belt, so that the packaging box is transported into the working box by the conveyor belt. At this time, the worker starts the motor, so that the force rod is forced into the hydraulic cylinder. At this time, the hydraulic rod extends outward under the pressure of the liquid inside the hydraulic cylinder. The movement of the hydraulic rod drives the positioning plate to move. The movement of the positioning plate pushes and positions the packaging box on top of the conveyor belt, so that the surface of the packaging box is directly below the labeling component. At this time, the labeling component accurately labels the surface of the packaging box. This design achieves the effect of positioning the packaging box to be labeled, ensuring that the packaging box is in the preset position and preventing labeling errors.
[0017] 2. In this utility model, through the cooperation of components such as the rack, pressure rod, and pressure block of the label pressing mechanism, when the threaded sleeve moves, the rack moves through the connecting rod. Through the meshing between the rack and the gear, the rack moves and drives the gear to rotate. The rotation of the gear drives the support shaft to rotate, and the rotation of the support shaft drives the pressure rod to rotate. During the rotation of the pressure rod, it presses the sliding column. The sliding column is forced to move downward through the sliding groove. The downward movement of the sliding column drives the pressure block to move downward. During the movement of the pressure block, it presses the label on the surface of the packaging box, so that the label is tightly attached to the packaging box. This design achieves the effect of pressing the label tightly, ensuring that the label is firmly attached to the packaging box and is not easy to fall off or wrinkle. Attached Figure Description
[0018] The preferred embodiments will be described below in a clear and easy-to-understand manner, in conjunction with the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages and implementation methods of this utility model.
[0019] Figure 1 This is a structural schematic diagram of the three-dimensional appearance of the present invention from a first-person perspective;
[0020] Figure 2 This is a schematic diagram of the structure of the present invention from a second-view three-dimensional cross-section;
[0021] Figure 3 This is a schematic diagram of the structure of the present invention from a third-person three-dimensional cross-section.
[0022] Figure 4 This utility model Figure 3 A three-dimensional magnified structural diagram of A in the diagram;
[0023] Figure 5 This utility model Figure 2 A three-dimensional magnified structural diagram of B.
[0024] In the diagram: 1. Workbench; 2. Workbox; 3. Conveyor belt; 4. Labeling assembly; 5. Positioning mechanism; 51. Motor; 52. Bidirectional threaded rod; 53. Threaded sleeve; 54. Push rod; 55. Hydraulic cylinder; 56. Force rod; 57. Hydraulic rod; 58. Positioning plate; 59. Return spring; 510. Limiting plate; 511. Limiting shaft; 6. Labeling mechanism; 61. Connecting rod; 62. Rack; 63. Support shaft; 64. Gear; 65. Pressure rod; 66. Slide groove; 67. Sliding column; 68. Pressure block; 69. Tension spring. Detailed Implementation
[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.
[0026] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."
[0027] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0028] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0029] Example 1
[0030] Reference Figures 1-5 This is the first embodiment of the present invention, which proposes a labeling device for the surface of a packaging box, including a workbench 1, a work box 2 fixedly connected to the top of the workbench 1, a conveyor belt 3 provided on the top of the workbench 1, a labeling component 4 provided inside the work box 2, and a positioning mechanism 5 provided inside the work box 2.
[0031] The positioning mechanism 5 includes a motor 51, which is fixedly connected to the inner wall of the working box 2 on its side. A bidirectional threaded rod 52 is fixedly connected to the output end of the motor 51. A threaded sleeve 53 is threadedly connected to the circumferential surface of the bidirectional threaded rod 52. A push rod 54 is fixedly connected to the top of the threaded sleeve 53. A hydraulic cylinder 55 is fixedly connected inside the working box 2. A force-bearing rod 56 is slidably connected to one end of the hydraulic cylinder 55 through a piston. A hydraulic rod 57 is transmitted through the hydraulic cylinder 55 to the force-bearing rod 56. A positioning plate 58 is fixedly connected to the end of the hydraulic rod 57 away from the side of the hydraulic cylinder 55.
[0032] A return spring 59 is fixedly connected to the side of the hydraulic cylinder 55. The end of the return spring 59 away from the side of the hydraulic cylinder 55 is fixedly connected to the circumferential surface of the force rod 56. The purpose is to ensure that the force rod 56 can automatically reset when it is not under force, thereby reducing manual intervention.
[0033] The working box 2 is fixedly connected to a limiting plate 510. The side of the limiting plate 510 passes through the circumferential surface of the bidirectional threaded rod 52. A limiting shaft 511 is fixedly connected to the side of the limiting plate 510. The circumferential surface of the limiting shaft 511 passes through and slides through the side of the threaded sleeve 53. The purpose is to limit the displacement distance of the threaded sleeve 53 and prevent the threaded sleeve 53 from rotating during movement.
[0034] One end of the force-bearing rod 56 is located on the displacement trajectory of the push rod 54. The number of hydraulic rods 57 and positioning plates 58 is set to two, and they are symmetrical to each other along the vertical central axis of the hydraulic cylinder 55. The purpose is to ensure that the movement of the push rod 54 can push the force-bearing rod 56, and to improve the positioning effect through the two positioning plates 58.
[0035] In this embodiment, when labeling is required on the surface of the packaging box, the worker places the packaging box on top of the conveyor belt 3, allowing the packaging box to be transported to the work box 2 via the conveyor belt 3. At this time, the worker starts the motor 51, and the output end of the motor 51 rotates. The rotation of the output end of the motor 51 drives the bidirectional threaded rod 52 to rotate. The rotation of the bidirectional threaded rod 52 drives the threaded sleeve 53 to move linearly through the limiting shaft 511. The movement of the threaded sleeve 53 drives the push rod 54 to move. During the movement of the push rod 54, it compresses the force-bearing rod 56, and the force-bearing rod 56 enters the hydraulic system. Inside cylinder 55, hydraulic rod 57 extends outward under the pressure of the liquid inside cylinder 55. The movement of hydraulic rod 57 drives positioning plate 58 to move. Positioning plate 58 pushes and positions the packaging box on top of conveyor belt 3, so that the surface of the packaging box is directly below labeling component 4. At this time, labeling component 4 accurately labels the surface of the packaging box. Due to the characteristics of bidirectional threaded rod 52, threaded sleeve 53 performs reciprocating linear motion. When force rod 56 is no longer under force, it is reset by the elasticity of return spring 59, thereby continuously positioning the packaging box on top of conveyor belt 3.
[0036] Example 2
[0037] Reference Figures 1-5 This is the second embodiment of the present invention. This embodiment differs from the first embodiment in that: a label pressing mechanism 6 is provided inside the working box 2. The label pressing mechanism 6 includes a connecting rod 61. One end of the connecting rod 61 is fixedly connected to the side of the threaded sleeve 53. A rack 62 is fixedly connected to the end of the connecting rod 61 away from the side of the threaded sleeve 53. A support shaft 63 is rotatably connected inside the working box 2. A gear 64 is fixedly passed through the circumferential surface of the support shaft 63. A pressure rod 65 is fixedly connected to the circumferential surface of the support shaft 63. A sliding groove 66 is opened inside the working box 2. A sliding column 67 is slidably connected inside the sliding groove 66. A pressure block 68 is fixedly connected to the end of the sliding column 67 away from the inside of the sliding groove 66. The purpose is to ensure that the label is tightly attached to the packaging box.
[0038] A tension spring 69 is fixedly connected inside the working box 2. The end of the tension spring 69 away from the inner wall of the working box 2 is fixedly connected to the top of the pressure block 68. The purpose is to ensure that the pressure block 68 can automatically reset and reduce manual intervention.
[0039] The top of the pressure block 68 is elastically connected to the inner wall of the working box 2 by a tension spring 69. The circumferential surface of the sliding column 67 is located on the displacement trajectory of the pressure rod 65. The purpose is to ensure that the rotation of the pressure rod 65 can press the sliding column 67.
[0040] The side of the rack 62 meshes with the circumferential surface of the gear 64. The initial state of the tension spring 69 is relaxed. The side of the pressure block 68 is close to the outlet of the working box 2. Its purpose is to ensure that the movement of the rack 62 can drive the gear 64 to rotate.
[0041] Compared to Embodiment 1, further, when the threaded sleeve 53 moves, it drives the rack 62 to move via the connecting rod 61. Through the meshing between the rack 62 and the gear 64, the movement of the rack 62 drives the gear 64 to rotate. The rotation of the gear 64 drives the support shaft 63 to rotate. The rotation of the support shaft 63 drives the pressure rod 65 to rotate. During the rotation of the pressure rod 65, it presses the sliding column 67. The sliding column 67 is forced to move downward through the sliding groove 66. The downward movement of the sliding column 67 drives the pressure block 68 to move downward. During the movement of the pressure block 68, it presses the label on the surface of the packaging box, so that the label is tightly attached to the packaging box. When the threaded sleeve 53 returns to its original position, the gear 64 rotates, causing the pressure rod 65 to leave the circumference of the sliding column 67. The pressure block 68 is then returned to its original position by the tension spring 69.
[0042] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A labeling device for the surface of a packaging box, characterized in that, Includes a workbench (1), a work box (2) is fixedly connected to the top of the workbench (1), a conveyor belt (3) is provided on the top of the workbench (1), a labeling component (4) is provided inside the work box (2), and a positioning mechanism (5) is provided inside the work box (2). The positioning mechanism (5) includes a motor (51), the side of which is fixedly connected to the inner wall of the work box (2). The output end of the motor (51) is fixedly connected to a bidirectional threaded rod (52). The circumferential surface of the bidirectional threaded rod (52) is threadedly connected to a threaded sleeve (53). The top of the threaded sleeve (53) is fixedly connected to a push rod (54). The inside of the work box (2) is fixedly connected to a hydraulic cylinder (55). One end of the hydraulic cylinder (55) is slidably connected to a force rod (56) via a piston. The force rod (56) is driven by the hydraulic cylinder (55) to a hydraulic rod (57). The end of the hydraulic rod (57) away from the side of the hydraulic cylinder (55) is fixedly connected to a positioning plate (58).
2. The labeling device for a packaging box surface according to claim 1, characterized in that, A return spring (59) is fixedly connected to the side of the hydraulic cylinder (55), and one end of the return spring (59) away from the side of the hydraulic cylinder (55) is fixedly connected to the circumferential surface of the force rod (56).
3. A labeling device for a packaging box surface according to claim 2, characterized in that, The work box (2) is fixedly connected to a limiting plate (510). The side of the limiting plate (510) penetrates the circumferential surface of the bidirectional threaded rod (52). A limiting shaft (511) is fixedly connected to the side of the limiting plate (510). The circumferential surface of the limiting shaft (511) penetrates and slides through the side of the threaded sleeve (53).
4. A labeling device for a packaging box surface according to claim 3, characterized in that, One end of the force-bearing rod (56) is located on the displacement trajectory of the push rod (54). The number of hydraulic rods (57) and positioning plates (58) is set to two, and they are symmetrical to each other along the vertical central axis of the hydraulic cylinder (55).
5. A labeling device for a packaging box surface according to claim 4, characterized in that, The working box (2) is equipped with a pressure mark mechanism (6). The pressure mark mechanism (6) includes a connecting rod (61). One end of the connecting rod (61) is fixedly connected to the side of the threaded sleeve (53). A rack (62) is fixedly connected to the end of the connecting rod (61) away from the side of the threaded sleeve (53). A support shaft (63) is rotatably connected inside the working box (2). A gear (64) is fixedly passed through the circumferential surface of the support shaft (63). A pressure rod (65) is fixedly connected to the circumferential surface of the support shaft (63). A sliding groove (66) is opened inside the working box (2). A sliding column (67) is slidably connected inside the sliding groove (66). A pressure block (68) is fixedly connected to the end of the sliding column (67) away from the inside of the sliding groove (66).
6. A labeling device for a packaging box surface according to claim 5, characterized in that, A tension spring (69) is fixedly connected inside the work box (2), and one end of the tension spring (69) away from the inner wall of the work box (2) is fixedly connected to the top of the pressure block (68).
7. A labeling device for a packaging box surface according to claim 6, characterized in that, The top of the pressure block (68) is elastically connected to the inner wall of the working box (2) through a tension spring (69), and the circumferential surface of the sliding column (67) is located on the displacement trajectory of the pressure rod (65).
8. A labeling device for a packaging box surface according to claim 7, characterized in that, The side of the rack (62) meshes with the circumferential surface of the gear (64), the initial state of the tension spring (69) is relaxed, and the side of the pressure block (68) is close to the outlet of the working box (2).