Film changing device and packaging machine
By installing the membrane replacement device of vacuum cavity assembly and cutting groove on the packaging machine, the two-person operation and alignment problems during the membrane replacement of vertical packaging machines are solved, single-person operation and efficient replacement are achieved, ensuring the alignment of packaging membrane joints and improving the Productivity.
Patent Information
- Application Number
- CN202421188342.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-28
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-05-28
AI Technical Summary
The existing vertical packaging machine requires two people to operate when replacing the packaging film, which takes a long time and is difficult to align the joints, resulting in problems such as material leakage in the finished packaging bag.
A membrane exchange device including a membrane exchange support plate and a vacuum cavity assembly is designed to realize automatic alignment and connection of new and old packaging films through vacuum adsorption and cutting grooves, simplifying the replacement process.
It realizes single-person operation, reduces labor intensity, shortens replacement time, and ensures the alignment of new and old packaging film joints, improving replacement efficiency.
Smart Images
Figure CN222292125U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to packaging equipment, in particular to a film changing device of a packaging machine. Background Art
[0002] The vertical packaging machine uses packaging film to form packaging bags. The packaging film has a fixed length and needs to be replaced after use. When replacing the film, the joints of the new and old packaging films need to be connected with tape.
[0003] However, packaging machines are usually equipped with multiple rollers for tensioning the packaging film for packaging. Due to the tension of the packaging film, when replacing the film, the joint position of the new and old packaging films needs to be manually dragged and then connected with tape. Usually, replacing the packaging film requires two people to operate, which is time-consuming, and the seam position cannot be guaranteed to be aligned, which will affect subsequent production. For example, the film is easily deviated, resulting in leakage in the finished packaging bag. Utility Model Content
[0004] The purpose of the present application is to provide a film changing device for a packaging machine, so as to improve the efficiency of replacing packaging films and ensure the alignment of the seams of the packaging films.
[0005] To this end, the present application provides a membrane changing device, which includes a membrane changing support plate and a vacuum chamber assembly adhered and fixed to the back side of the membrane changing support plate, wherein the vacuum chamber assembly has at least two independent vacuum chambers, and the membrane changing support plate has adsorption areas corresponding to the vacuum chambers respectively, and the adsorption areas are respectively provided with through holes, and the through holes are connected to the vacuum chambers.
[0006] The adsorption area includes an upper adsorption area and a lower adsorption area, and a cutting groove extending laterally is provided between the upper adsorption area and the lower adsorption area.
[0007] Wherein, the membrane replacement support plate comprises an upper support plate and a lower support plate, wherein the front surfaces of the upper support plate and the lower support plate are located in the same plane.
[0008] Wherein, the vacuum chamber assembly includes an upper vacuum chamber corresponding to the upper adsorption area and a lower vacuum chamber corresponding to the lower adsorption area.
[0009] Furthermore, the film changing device further comprises a cutting assembly, which comprises a transverse track and a cutting head mounting seat moving on the transverse track, wherein both ends of the transverse track are respectively fixed to the cutting assembly supports arranged at the transverse ends of the support plate.
[0010] According to another aspect of the present application, a packaging machine is provided, which has a packaging film conveying mechanism, and the packaging film conveying mechanism is provided with the aforementioned film changing device.
[0011] The film changing device of the present application can be operated by one person and reduces labor intensity, shortens the time for changing the packaging film, thereby improving labor efficiency, and can ensure that the joints of the new and old packaging films are aligned. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of an embodiment of a film changing device according to the present application, and also shows that the film changing device is installed on a packaging film conveying mechanism of a packaging machine.
[0013] Figure 2 yes Figure 1 A schematic diagram of another angle of the illustrated embodiment.
[0014] Figure 3 yes Figure 1 Schematic diagram of the support plate in the illustrated embodiment, which is mounted on the frame of the packaging film conveying mechanism.
[0015] Figure 4 yes Figure 1 Schematic diagram of the vacuum chamber assembly in the illustrated embodiment.
[0016] 10 frames, 20 packaging film conveyor rollers 20
[0017] 100 membrane replacement device, 110 membrane replacement support plate, 120 vacuum chamber assembly, 130 cutting groove, 140 cutting assembly
[0018] 112 adsorption area, 1122 upper adsorption area, 1124 lower adsorption area, 114 through hole
[0019] 122 first vacuum chamber, 124 second vacuum chamber
[0020] 142 transverse rail, 144 cutting head mounting seat, 146 cutting component support DETAILED DESCRIPTION
[0021] The specific implementation of the present application is described below with reference to the accompanying drawings.
[0022] In the present application, the term "front side" refers to the side of the support plate used to support the packaging film, and the term "forward direction" refers to the direction from the front side of the support plate toward the packaging film. The term "back side" refers to the side opposite to the "front side". The term "back side" refers to the direction opposite to the "forward direction". The term "upper" refers to the direction consistent with the feeding direction of the packaging film, and conversely, the term "lower" refers to the direction opposite to the feeding direction of the packaging film, that is, the feeding direction of the packaging film can be expressed as "from bottom to top". The term "lateral" refers to the direction generally perpendicular to the feeding direction of the packaging film.
[0023] Reference Figure 1-3A film changing device 100 can be installed on a frame 10 of a packaging film transmission mechanism of a packaging machine, for example, can be arranged between two adjacent packaging film conveying rollers 20.
[0024] The film changing device 100 includes a film changing support plate 110 fixed between packaging film conveying rollers 20 and a vacuum chamber assembly 120 fixed to and attached to the back of the film changing support plate 110 .
[0025] Reference Figure 4 The vacuum chamber assembly 120 includes two independent vacuum chambers, which are a first vacuum chamber 122 and a second vacuum chamber 124. The first vacuum chamber 122 and the second vacuum chamber 124 are connected to a vacuum generator (not shown) through pipelines.
[0026] The first and second vacuum chambers have forward openings, that is, the openings face forward. The forward openings of the first vacuum chamber 122 and the second vacuum chamber 124 are closely attached to the back surface of the film-changing support plate 110 to form a seal.
[0027] In one example, the vacuum chamber assembly can be constructed as a single integral component. Alternatively, in another example, the first vacuum chamber and the second vacuum chamber can be constructed as independent components, which are respectively tightly fitted and fixed to the back side of the membrane replacement support plate.
[0028] In addition, although only two vacuum chambers are described in the embodiments of the present application, more vacuum chambers may be provided according to the requirements of specific applications.
[0029] The area of the membrane replacement support plate 110 corresponding to the positive opening of the first vacuum chamber 122 and the second vacuum chamber 124 is the adsorption area 112. A plurality of through holes 114 are provided in the adsorption area 112. The through holes are respectively connected to the first vacuum chamber 122 and the second vacuum chamber 124. According to the specific application, the through hole 114 can be configured as a circle, a polygon or a groove, or other suitable shapes. The distribution mode of the through hole 114 can be determined according to the specific application, such as uniformly spaced distribution or non-uniformly spaced distribution.
[0030] Reference Figure 3 In one embodiment, the adsorption area 112 is constructed to include an upper adsorption area 1122 and a lower adsorption area 1124, which correspond to the first and second vacuum chambers, respectively. The vacuum chamber corresponding to the upper adsorption area is called an upper vacuum chamber, and the vacuum chamber corresponding to the lower adsorption area is called a lower vacuum chamber. The upper adsorption area 1122 is constructed to mainly adsorb the tail of the old packaging film, and the lower adsorption area is constructed to mainly adsorb the head of the new packaging film.
[0031] Reference Figure 2A cutting groove 130 is formed between the upper adsorption area 1122 and the lower adsorption area 1124 to accommodate the movement of the cutting blade and is also the joint position of the new and old packaging films. The cutting groove 130 extends transversely.
[0032] In one embodiment, the film-changing support plate 110 is constructed as an integral single component, and the upper adsorption area 1122 and the lower adsorption area 1124 are formed at positions corresponding to the vacuum chamber. The cutting groove 130 may be a groove formed on the film-changing support plate 110 .
[0033] In another embodiment, the film changing support plate is constructed to include an upper support plate and a lower support plate. The front surfaces of the upper support plate and the lower support plate are substantially located in the same plane to maintain the flatness of the packaging film joint. In this example, the upper support plate and the lower support plate are respectively tightly fitted with the vacuum chamber. In this example, the upper support plate forms the upper adsorption area, and the lower support plate forms the lower adsorption area. The cutting groove can be formed by the gap between the upper support plate and the lower support plate.
[0034] The film changing device 100 further includes a cutting assembly 140. The cutting assembly 140 includes a transverse track 142 and a cutting head mounting seat 144 that moves on the transverse track 142. The cutting assembly 140 is configured so that a blade mounted on the cutting head mounting seat 144 moves transversely along the cutting groove.
[0035] In one example, both ends of the transverse rail 142 are respectively fixed to the cutting assembly supports 146 disposed at the transverse ends of the support plate 110 .
[0036] During operation, the head of the new packaging film is laid on the corresponding lower adsorption area 1124 on the film replacement support plate 110.
[0037] Then, a vacuum is formed in the corresponding lower vacuum chamber through the valve and the vacuum generator. At this time, the head of the new packaging film is adsorbed on the front of the film-changing support plate 110. The blade is moved along the cutting groove 130 to cut the new packaging film. Similarly, the old packaging film is pulled so that its tail is in the upper adsorption area 1122, and a vacuum is formed in the upper vacuum chamber to adsorb the old packaging film on the front of the film-changing support plate 110. Similarly, the blade is moved along the cutting groove 130 to cut the old packaging film. Thus, the joint position of the new packaging film and the old packaging film is formed at the position of the cutting groove 130. The new and old packaging films are bonded by tape, and then the vacuum is released to make the air pressure in the chamber the same as the atmospheric pressure, so that the packaging film is no longer adsorbed on the support plate, and the film change is completed.
[0038] According to another embodiment of the present application, a packaging machine is provided with a packaging film conveying mechanism, wherein the packaging film conveying mechanism is provided with the aforementioned film changing device 100 .
[0039] In the above description, the details of the technical solution of the present application are explained. However, those skilled in the art will appreciate that the present application is not limited to the specific details listed in the above embodiments, but may vary within the scope defined by the claims.
Claims
1. A membrane replacement device, characterized in that: The membrane changing device includes a membrane changing support plate and a vacuum chamber assembly fixed to the back side of the membrane changing support plate, wherein the vacuum chamber assembly has at least two independent vacuum chambers, the membrane changing support plate has adsorption areas corresponding to the vacuum chambers respectively, the adsorption areas are respectively provided with through holes, and the through holes are connected to the vacuum chambers.
2. The membrane replacement device according to claim 1, characterized in that: The adsorption region includes an upper adsorption region and a lower adsorption region.
3. The membrane replacement device according to claim 2, characterized in that: A cutting groove extending laterally is provided between the upper adsorption area and the lower adsorption area.
4. The membrane replacement device according to claim 1, characterized in that: The membrane replacement support plate comprises an upper support plate and a lower support plate, wherein the front surfaces of the upper support plate and the lower support plate are located in the same plane.
5. The membrane replacement device according to claim 2, characterized in that: The vacuum chamber assembly includes an upper vacuum chamber corresponding to the upper adsorption area and a lower vacuum chamber corresponding to the lower adsorption area.
6. The membrane replacement device according to claim 1, characterized in that: Further included is a cutting assembly including a transverse track and a cutting head mounting seat that moves on the transverse track.
7. The membrane replacement device according to claim 6, characterized in that: The two ends of the transverse rail are respectively fixed to the cutting assembly supports arranged at the transverse ends of the support plate.
8. A packaging machine having a packaging film transmission mechanism, characterized in that: The packaging film transmission mechanism is provided with a film changing device as described in any one of claims 1-7.