Labeling machine bottom film splicing device
Patent Information
- Application Number
- CN202522555560.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-02
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-02
AI Technical Summary
When changing label rolls, the process of guiding and winding the bottom film in existing labeling machines is complicated and cumbersome, which can easily lead to the bottom film being skewed or misaligned, affecting work efficiency and production line continuity.
The labeling machine bottom film splicing device connects the ends of the new and old label bottom films through the device box, side pressure block and welding mechanism. It is fixed by magnetic attraction or buckle structure, and high-strength connection is achieved by electrothermal or ultrasonic welding technology.
It simplifies the bottom film splicing process, improves roll changing efficiency and operational reliability, ensures the flatness and strength of the connection parts, reduces misalignment, and enhances the working efficiency and production line continuity of the labeling machine.
Smart Images

Figure CN224929395U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of labeling machines, and in particular to a labeling machine bottom film splicing device. Background Technology
[0002] Existing labeling machine systems typically consist of label rolls, multiple guide rollers, a labeling mechanism, and a waste backing film roll. During each label roll change, the operator must thread the backing film from the new roll through all the guide rollers on the labeling machine. Then, the first end of the backing film is attached to the waste backing film roll. This backing film guiding and winding process is extremely complex and cumbersome, not only difficult and time-consuming to operate, but also prone to human error leading to film skewing or misalignment. Furthermore, it requires a large workspace, severely impacting the labeling machine's efficiency and production line continuity. Utility Model Content
[0003] The present invention aims to provide a labeling machine bottom film splicing device. By using this device, the end of the new label bottom film can be connected to the end of the old label bottom film during the process of changing the label roll, so that it is not necessary to re-thread and rewind the new label bottom film to each roller.
[0004] The objective of this utility model can be achieved through the following technical solutions: A labeling machine bottom film splicing device, comprising: The device housing has a bottom film receiving groove on its top surface for placing the label bottom film, and the width of the bottom film receiving groove is adapted to the width of the label bottom film. Two side pressure blocks are respectively disposed at both ends of the bottom film receiving groove along the length direction, and are used to press and fix the two label bottom films in the bottom film receiving groove. A welding mechanism is located in the middle of the bottom film receiving groove; A central pressure block has one end rotatably connected to the first side of the device housing, and its bottom surface is used to cooperate with the welding mechanism to press the overlapping ends of the two label base films together. The other end of the central pressure block is provided with a triggering mechanism. When the central pressure block is pressed, the triggering mechanism activates the welding mechanism, thereby welding the overlapping ends of the two label base films together.
[0005] A further improvement of this utility model is that the first ends of the two side pressure blocks are respectively rotatably connected to the first side of the device box.
[0006] A further improvement of this utility model is that a first magnet is provided at the second end of the two side pressing blocks, and a second magnet is provided on the device box corresponding to the position of the first magnet; when the side pressing blocks press the label bottom film, locking is achieved by the attraction of the first magnet and the second magnet.
[0007] A further improvement of this utility model is that the second ends of the two side pressure blocks are connected to the device housing via a snap-fit structure.
[0008] A further improvement of this utility model is that anti-slip pads are provided on the bottom surfaces of the two side pressure blocks and the bottom film receiving groove corresponding to the positions of the side pressure blocks.
[0009] A further improvement of this utility model is that, The device housing contains a built-in power supply battery. Alternatively, the side of the device housing may be provided with a power supply interface for connecting to an external power source.
[0010] A further improvement of this utility model is that the welding mechanism includes an electrothermal welding mechanism, which includes a plurality of protruding hot spots.
[0011] A further improvement of this utility model is that the welding mechanism includes an ultrasonic welding mechanism.
[0012] A further improvement of this utility model is that the triggering mechanism of the central pressure block includes a strip conductor structure disposed at its second end; the second side of the device housing is provided with two contacts corresponding to the strip conductor structure; when the central pressure block presses the label bottom film, the strip conductor structure contacts the two contacts, thereby activating the welding mechanism.
[0013] A further improvement of this utility model is that the triggering mechanism of the central pressing block includes a protruding structure disposed at its second end; a micro switch corresponding to the protruding structure is disposed on the second side of the device housing; when the central pressing block presses the label bottom film, the protruding structure triggers the micro switch, thereby activating the welding mechanism.
[0014] Compared with existing technologies, the labeling machine bottom film splicing device of this invention can connect the ends of the label bottom film together with high strength, and the connection part has the advantages of high flatness, high strength, and small misalignment. This device effectively eliminates the tedious steps of re-leading the tape and rewinding the roller assembly. After splicing, the labeling machine can be started for a short-term trial run, automatically winding the remaining portion of the old bottom film into the waste bottom film roll. Normal labeling operations can then resume, greatly improving roll changing efficiency and operational reliability. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of a labeling machine bottom film splicing device according to the present invention; Figure 2 A schematic diagram showing how a label backing film end is held in place by a labeling machine backing film splicing device; Figure 3 A schematic diagram showing how the bottom film splicing device of a labeling machine holds the ends of the old and new label bottom films; Figure 4 This is a schematic diagram of the labeling machine's bottom film splicing device after the central pressure block is pressed down. Detailed Implementation
[0016] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. This embodiment is based on the technical solution of the present invention and provides detailed implementation methods and specific operating procedures; however, the scope of protection of the present invention is not limited to the following embodiments.
[0017] like Figures 1-4 As shown, this embodiment provides a labeling machine bottom film splicing device, which includes: device box 10, two side pressure blocks 20, and a central pressure block 30.
[0018] The top surface of the device housing 10 has a base film receiving groove 11 for placing the label base film. The width of the base film receiving groove 11 is adapted to the width of the label base film 50 to accommodate the ends of two label base films 50, one new and one old. Two side pressing blocks 20 are respectively disposed at both ends of the base film receiving groove 11 along its length, and are used to press and fix the two label base films 50 in the base film receiving groove 11. A welding mechanism 12 is disposed in the middle of the base film receiving groove 11, and its upper surface is the overlapping area of the ends of the two label base films 50. A central pressing block 30 is used to press the overlapping area. One end of the central pressing block 30 is rotatably connected to the first side of the device housing 10, and the other end of the central pressing block 30 is provided with a triggering mechanism. When the central pressing block 30 is pressed, the triggering mechanism activates the welding mechanism 12, thereby welding the overlapping parts of the ends of the two label base films 50 together.
[0019] In one specific embodiment, the first ends of the two side pressure blocks 20 are rotatably connected to the first side of the device housing 10. Anti-slip pads 16 are provided on the bottom surfaces of the two side pressure blocks 20 and the bottom film receiving groove 11 corresponding to the side pressure blocks 20 to prevent the label bottom film 50 from sliding under the pressure state.
[0020] When pressed, the second ends of both side pressing blocks 20 need to be locked to the second side of the device housing 10. In one specific embodiment, a first magnet 21 is embedded in the second end of the two side pressing blocks 20. A second magnet 13 is embedded in the device housing 10 at the position corresponding to the first magnet 21; when the side pressing blocks 20 press against the label bottom film, locking is achieved by the attraction between the first magnet 21 and the second magnet 13 with opposite magnetic poles.
[0021] In another specific embodiment, the second ends of the two side pressure blocks 20 are connected and locked to the second side of the device housing 10 by a snap-fit structure.
[0022] In one specific embodiment, the welding mechanism 12 may be an electrothermal welding mechanism, which includes a plurality of protruding hot spots. This heat-fusion method is suitable for thermoplastic polymer label backing films.
[0023] In another specific embodiment, the welding mechanism 12 includes an ultrasonic welding mechanism.
[0024] Both of the above welding mechanisms 12 use commercially available components, and their control circuits and power supply circuits have reference designs from the manufacturers, so there is no need to improve the methods or software.
[0025] In this embodiment, the device housing 10 is equipped with a power supply battery and a voltage conversion module that supplies power to the welding mechanism 12; a power supply interface 15 for connecting to an external power source is provided on the side of the device housing 10. During use, the device can be powered solely by the built-in power supply battery, or it can simultaneously draw power from an external source using the power supply interface 15.
[0026] like Figure 1 , Figure 4 As shown, in one embodiment, the triggering mechanism of the central pressure block 30 includes a strip conductor structure 31 disposed at its second end. Two contacts 14 corresponding to the strip conductor structure 31 are disposed on the second side of the device housing 10; when the central pressure block 30 presses against the label base film 50, the strip conductor structure 31 contacts the two contacts 14, thereby activating the welding mechanism 12.
[0027] In another embodiment, the triggering mechanism of the central pressure block 30 includes a protrusion structure disposed at its second end; a micro switch corresponding to the protrusion structure is disposed on the second side of the device housing 10; when the central pressure block 30 presses the label base film 50, the protrusion structure triggers the micro switch, thereby activating the welding mechanism 12.
[0028] The usage process of the labeling machine bottom film splicing device in this embodiment includes: 1. Before replacing the label roll, cut the existing label backing film between the label roll and the first roller, leaving enough length for reconnection; 2. Remove the old label roll, replace it with a new label roll, and pull out the end of the new label backing film. Place the end of the new label backing film 50 into the backing film receiving groove 11 of the device housing 10, and clamp the label backing film 50 with a side pressure block 20. Finally, as shown... Figure 2 As shown; 3. Place the remaining label backing film 50 from the labeling machine into the backing film receiving groove 11 from the other side, overlapping it with the end of the new label backing film 50. Use another side pressure block 20 to press the existing label backing film 50 firmly as shown. Figure 3 As shown; 4. Press down the center pressure block 30 to trigger the welding mechanism 12, welding the overlapping parts of the two label backing films 50 together. After welding, lift the center pressure block 30 and the two side pressure blocks 20 to complete the splicing of the label backing films 50. Then, rotate the waste backing film roll to wind all the remaining label backing film in the labeling machine into the waste backing film roll. This eliminates the need to pass the label backing film through all the guide rollers on the labeling machine during label roll replacement. After splicing, the labeling machine can be started for a short trial run, automatically winding the remaining portion of the old backing film into the waste backing film roll. Normal labeling operations can then resume, greatly improving roll changing efficiency and operational reliability.
[0029] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.
Claims
1. A labeling machine bottom film splicing device, characterized in that, include: The device box (10) has a bottom film receiving groove (11) on its top surface for placing the label bottom film. The width of the bottom film receiving groove (11) is adapted to the width of the label bottom film. Two side pressure blocks (20) are respectively disposed at both ends of the bottom film receiving groove (11) along the length direction, and are used to press and fix the two label bottom films (50) in the bottom film receiving groove (11); A welding mechanism (12) is disposed in the middle of the bottom film receiving groove (11); A central pressure block (30) is rotatably connected at one end to the first side of the device housing (10). Its bottom surface is used to cooperate with the welding mechanism (12) to press the overlapping ends of the two label base films (50). The other end of the central pressure block (30) is provided with a triggering mechanism. When the central pressure block (30) is pressed, the triggering mechanism activates the welding mechanism (12) to weld the overlapping ends of the two label base films (50) together.
2. The labeling machine bottom film splicing device according to claim 1, characterized in that, The first ends of the two side pressure blocks (20) are respectively rotatably connected to the first side of the device box (10).
3. The labeling machine bottom film splicing device according to claim 2, characterized in that, The second end of the two side pressing blocks (20) is provided with a first magnet (21), and the device box (10) is provided with a second magnet (13) corresponding to the position of the first magnet (21); when the side pressing block (20) presses the label bottom film, it is locked by the attraction of the first magnet (21) and the second magnet (13).
4. The labeling machine bottom film splicing device according to claim 2, characterized in that, The second ends of the two side pressure blocks (20) are connected to the device housing (10) by a snap-fit structure.
5. The labeling machine bottom film splicing device according to claim 2, characterized in that, Anti-slip pads are provided on the bottom surfaces of the two side pressure blocks (20) and the bottom film receiving groove (11) corresponding to the side pressure blocks (20).
6. The labeling machine bottom film splicing device according to claim 1, characterized in that: The device housing contains a built-in power supply battery. Alternatively, the side of the device housing may be provided with a power supply interface for connecting to an external power source.
7. The labeling machine bottom film splicing device according to claim 1, characterized in that, The welding mechanism (12) includes an electrothermal welding mechanism, which includes a plurality of protruding hot spots.
8. The labeling machine bottom film splicing device according to claim 1, characterized in that, The welding mechanism includes an ultrasonic welding mechanism.
9. The labeling machine bottom film splicing device according to claim 1, characterized in that... The triggering mechanism of the central pressure block (30) includes a strip conductor structure (31) disposed at its second end; the second side of the device housing (10) is provided with two contacts (14) corresponding to the strip conductor structure (31); when the central pressure block (30) presses the label bottom film (50), the strip conductor structure (31) contacts the two contacts (14), thereby activating the welding mechanism (12).
10. The labeling machine bottom film splicing device according to claim 1, characterized in that, The triggering mechanism of the central pressure block (30) includes a protrusion structure disposed at its second end; a micro switch corresponding to the protrusion structure is disposed on the second side of the device housing (10); when the central pressure block (30) presses the label bottom film (50), the protrusion structure triggers the micro switch, thereby activating the welding mechanism (12).
