An automatic vacuum skin packaging machine with an adjustable width film feed cylinder

By using a modularly designed film feeding roller assembly, the width of the film feeding roller can be adjusted through a drive motor and transmission mechanism. This solves the problem of poor adaptability caused by the fixed width of the film feeding roller in the existing technology, and improves the applicability and production efficiency of the packaging machine.

CN224589509UActive Publication Date: 2026-08-04ZHEJIANG BAIZHENTANG FOOD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHEJIANG BAIZHENTANG FOOD
Filing Date
2025-07-18
Publication Date
2026-08-04

AI Technical Summary

Technical Problem

The existing automatic vacuum skin packaging machines have a fixed width of film feeding rollers, which makes it difficult to adapt to transparent packaging films of different widths, resulting in complicated replacement or adjustment, wasting time and increasing costs.

Method used

The modularly designed film feeding roller assembly uses a combination of drive motor, gears, racks and slides to adjust the width of the film feeding roller, and adjusts it in real time with the position sensor to adapt to different film roll widths.

Benefits of technology

It improves the applicability and production efficiency of packaging machines, realizes automated operation, and reduces downtime and production costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an automatic vacuum body -bonding packaging machine with adjustable width film feeding cylinder relates to packaging equipment technical field, including frame, film -placing subassembly, film feeding cylinder subassembly, vacuum compression module, push subassembly and tray mould. Frame and film -placing subassembly are installed on the frame, film feeding cylinder subassembly is installed in the frame and is located film -placing subassembly below, vacuum compression module is installed in the machine case, and its outside is provided with waste film collection module, and waste film collection module sets up vacuum compression module left side, push subassembly is installed on the machine case, and tray mould is installed on the base of push subassembly. The utility model discloses strong adaptability can satisfy the diversified production demand.
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Description

Technical Field

[0001] This utility model relates to the field of packaging equipment technology, specifically to an automatic vacuum skin packaging machine with an adjustable width film feeding roller. Background Technology

[0002] In the widely used automatic vacuum skin packaging machines on the market today, the width of the film feeding roller is usually preset and fixed. This design is not flexible enough when dealing with transparent packaging films of different widths, making it difficult to meet diverse needs. When it is necessary to change to a different width of packaging film, operators often face a tricky problem: either replace the entire film feeding roller or make a series of complex adjustments. This process is not only time-consuming and increases production costs, but also wastes valuable production time because the machine needs to stop running during the adjustment process.

[0003] Therefore, it is particularly important to develop a film feeding roller design that can adapt to packaging films of different widths. Utility Model Content

[0004] In view of this, the present invention provides an automatic vacuum skin packaging machine with an adjustable width film feeding roller. The film feeding roller adopts a modular design, which can adapt to transparent packaging films of different widths, improve the applicability and production efficiency of the packaging machine, and solve the technical problem of low versatility of the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: An automatic vacuum skin packaging machine with an adjustable-width film feeding roller includes: The rack, with an inverted U-shaped structure, is mounted on the bottom chassis; A film feeding assembly, mounted on the frame, includes a film roll and a mounting frame disposed on a film feeding air shaft; A film feeding roller assembly is installed on the frame and located below the film dispensing assembly; A vacuum pressing module is installed in the chassis, and a waste membrane collection module is provided on the outside of the vacuum pressing module. The waste membrane collection module is located on the left side of the vacuum pressing module. The push component is installed in the chassis; A pallet mold is mounted on the base of the pushing assembly to accommodate the pallet to be processed; The film feeding roller assembly can be adjusted to accommodate film rolls of different widths.

[0006] Furthermore, the film feeding roller assembly includes: One film feeding roller body is mounted on the inner wall of the frame via a fixed mounting base; The connecting cylinder is coaxially mounted on the film feeding roller body; An adjustment module is installed on the inner side wall of the frame, and the adjustment module is located on the left side of the film feeding roller body; The second film feeding roller body is a non-through hollow shape, with one end slidably mounted on the connecting cylinder and the other end mounted on the adjustment module via a movable mounting seat.

[0007] Furthermore, the adjustment module includes: A drive motor is mounted on the frame; Gears are mounted on the output shaft of the drive motor; A slide bar is mounted on the frame and located behind the drive motor; The rack is slidably mounted on the slide rod via a limiting block provided at the bottom, and the rack meshes with the gear for transmission; A connecting plate is installed at the bottom of the rack, and its other end is fixedly connected to the movable mounting base; An end plate is provided at the end of the slide bar.

[0008] Furthermore, the film feeding roller body two has an axially formed adjustment groove on the side near the connecting cylinder, allowing the connecting cylinder to move.

[0009] Furthermore, the film feeding roller assembly also includes a pair of limiting rings, which are symmetrically installed on the first film feeding roller body and the second film feeding roller body.

[0010] Furthermore, a pair of protrusions on the outer periphery of the connecting cylinder are symmetrically fitted with a pair of second sliding grooves on the film feeding roller body for sliding engagement.

[0011] Furthermore, a retaining ring is provided at one end of the film feeding roller body near the adjusting groove.

[0012] Furthermore, the push component includes: An electronic linear actuator is mounted on the chassis. The base is connected to the end of the piston rod of the electronic actuator; A slider is installed at the bottom of the base, and the slider slides in conjunction with a first groove formed on the chassis.

[0013] Furthermore, it also includes a position sensor installed on the inner sidewall of the frame.

[0014] As can be seen from the above technical solution, the advantages of this utility model are: 1. This utility model has strong adaptability. The width of the film feeding roller assembly can be flexibly adjusted to adapt to film rolls of different widths. Combined with the replaceable pallet mold, it can meet the packaging needs of various products and broaden the application range.

[0015] 2. This utility model has a high degree of automation, integrating multiple automated components to achieve fully automated operation from film application to waste film collection, thereby improving production efficiency and quality. Attached Figure Description

[0016] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 for Figure 1 The right view shows the assembly of the chassis, frame, film feeding assembly and film delivery roller assembly.

[0019] Figure 3 for Figure 2 A magnified view of a portion at point A.

[0020] Figure 4 This is a partial exploded view of the film feeding roller assembly.

[0021] Figure 5 for Figure 1 A top view of the chassis and push-in components.

[0022] Figure 6 for Figure 1 A front sectional view of the chassis and push components.

[0023] Explanation of reference numerals in the attached drawings: 1-Chassis; 11-First slide rail; 2-Frame; 21-Through hole; 31-Mounting bracket; 32-Film feeding air shaft; 33-Film roll; 4-Film feeding roller assembly; 41-Film feeding roller body one; 42-Film feeding roller body two; 421-Adjusting groove; 422-Second slide rail; 43-Connecting cylinder; 431-Protrusion; 44-Fixed mounting base; 45-Moving mounting base; 46-Limiting ring; 471-Drive motor; 472-Gear; 473-Rack; 474-Limiting block; 475-Slide rod; 476-End plate; 477-Connecting plate; 48-Sticking ring; 5-Vacuum pressing module; 6-Waste film collection module; 7-Pushing assembly; 71-Electronic push rod; 72-Base; 73-Slider; 8-Lower tray mold; 9-Position sensor. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. Here, the illustrative embodiments and descriptions of this utility model are used to explain the present utility model, but are not intended to limit the present utility model.

[0025] refer to Figures 1 to 6 ,like Figure 1 As shown, this embodiment provides an automatic vacuum skin packaging machine with an adjustable-width film feeding roller. This packaging machine integrates multiple advanced functions, possesses high flexibility and adaptability, and can effectively meet the needs of different specifications of film rolls and packaging, significantly improving packaging efficiency and quality. The packaging machine includes a frame 2, a film feeding assembly, a film feeding roller assembly 4, a vacuum pressing module 5, a pushing assembly 7, and a tray mold 8. The frame 2 adopts an inverted U-shaped structure and is installed on the bottom housing 1. The film feeding assembly is installed on the frame 2 and includes a film roll 33 mounted on a film feeding air shaft 32 and a mounting frame 31. The mounting frame 31 is fixedly installed on the inner wall of the frame 2 by screws or other connection methods. One end of the film feeding air shaft 32 is mounted on the mounting frame 31 to fix the film roll 33, facilitating the installation and replacement of the film roll. The film feeding roller assembly 4 is installed on the frame 2 and located below the film feeding assembly. It can be adjusted to accommodate film rolls 33 of different lengths, greatly improving the versatility of the equipment. The vacuum pressing module 5 (including the housing, upper mold vacuum chamber, vacuum pump, heating components, etc., the same as the existing structure) is installed on the chassis 1. A waste film collection module 6 is installed on its exterior, located on the left side of the vacuum pressing module 5. After vacuum skin packaging is completed, the waste film collection module 6 automatically collects the generated waste film, maintaining a clean working environment and improving production efficiency. The pushing component 7 is installed on the chassis 1, and the pallet mold 8 is installed on the base 72 of the pushing component 7 to accommodate the pallets to be processed. Different specifications of pallet molds 8 can be replaced according to different packaging needs to meet diverse packaging requirements.

[0026] Furthermore, the film feeding roller assembly 4 includes a first film feeding roller body 41, a connecting cylinder 43, an adjustment module, and a second film feeding roller body 42. The first film feeding roller body 41 is mounted on the inner wall of the frame 2 via a fixed mounting base 44. The connecting cylinder 43 is coaxially mounted on the first film feeding roller body 41, and its outer periphery is provided with a pair of protrusions 431, which correspond to and slide in cooperation with a pair of second sliding grooves 422 symmetrically opened on the second film feeding roller body 42, ensuring the accuracy and stability of the second film feeding roller body 42 when moving on the connecting cylinder 43. The second film feeding roller body 42 is a non-through hollow shape, with one end slidably mounted on the connecting cylinder 43, and the other end mounted on the adjustment module via a movable mounting base 45, so that the second film feeding roller body 42 can move in position under the action of the adjustment module, thereby changing the overall width of the film feeding roller.

[0027] Specifically, such as Figure 2 , Figure 3As shown, the adjustment module is installed on the inner wall of the frame 2, located on the left side of the film feeding roller body 41. The adjustment module includes a drive motor 471, a gear 472, a slide rod 475, a rack 473, a connecting plate 477, and an end plate 476. The drive motor 471 is installed on the frame 2, providing power for the entire adjustment process. The gear 472 is installed on the output shaft of the drive motor 471. The slide rod 475 is installed on the frame 2 and located behind the drive motor 471, providing guidance for the sliding of the rack 473. The rack 473 is slidably installed on the slide rod 475 through a limiting block 474 set at the bottom, and the rack 473 meshes with the gear 472 for transmission. When the drive motor 471 drives the gear 472 to rotate, the rack 473 will make linear motion on the slide rod 475. The connecting plate 477 is installed at the bottom of the rack 473, and the other end is fixedly connected to the movable mounting base 45, thereby transmitting the linear motion of the rack 473 to the film feeding roller body 42. The end plate 476 is located at the end of the slide bar 475 and serves as a limit to prevent the rack 473 from sliding out of the slide bar 475.

[0028] Specifically, the frame 2 has a through hole 21 for the rack 473 to pass through.

[0029] like Figure 4 As shown, the film feeding roller body 42 has an axially formed adjustment groove 421 on the side near the connecting cylinder 43, which allows the connecting cylinder 43 to move.

[0030] Furthermore, such as Figure 2 , Figure 4 As shown, the film feeding roller assembly 4 also includes a pair of limiting rings 46. The pair of limiting rings 46 are symmetrically installed on the first film feeding roller body 41 and the second film feeding roller body 42, which can effectively prevent the film from shifting during the film feeding process and ensure the accuracy of film feeding.

[0031] Furthermore, such as Figure 4 As shown, a retaining ring 48 is provided at one end of the film feeding roller body 42 near the adjusting groove 421 to prevent the connecting cylinder 43 from sliding out of the adjusting groove 421, thereby further enhancing the stability of the structure.

[0032] In this embodiment, as Figure 5 , Figure 6 As shown, the pushing assembly 7 includes an electronic push rod 71, a base 72, and a slider 73. The electronic push rod 71 is mounted on the housing 1 and provides power for the pushing process. The base 72 is connected to the end of the piston rod of the electronic push rod 71 and is used to place the pallet mold 8. The slider 73 is mounted on the bottom of the base 72 and slides in conjunction with the first groove 11 formed on the housing 1 to ensure the smooth movement of the base 72 during the pushing process, so that the pallet to be processed can accurately reach the designated position.

[0033] like Figure 2As shown, this packaging machine also includes a position sensor 9 installed on the inner side wall of the frame 2 for real-time monitoring of the distance of the film roll 33. The information fed back by the position sensor 9 can be fed back to the drive motor 471, so that the adjustment module can adjust the width of the film feeding roller assembly 4 in a timely manner, ensuring the smooth operation of the film feeding process and avoiding film feeding failures caused by changes in the position of the film roll 33.

[0034] In use, select a suitable film roll 33 according to the specifications of the plastic pallet to be packaged, install it on the film feeding air shaft 32, and adjust the position of the film roll 33. Adjust the width of the film feeding roller assembly 4 according to the length of the film roll 33. Start the drive motor 471, which drives the gear 472 to rotate. The gear 472 meshes with the rack 473, causing the rack 473 to move linearly on the slide rod 475. This movement is driven by the connecting plate 477 to move the movable mounting base 45, thereby adjusting the position of the film feeding roller body 42 so that the width of the film feeding roller assembly 4 matches the length of the film roll 33. Place the plastic pallet in the pallet mold 8, press the start switch, and the film feeding assembly begins to feed the film. The film is conveyed to the vacuum pressing module 5 through the film feeding roller assembly 4. The electronic push rod 71 of the push assembly 7 is activated, pushing the base 72 to move along the first slide groove 11, sending the pallet to be processed to the bottom of the vacuum pressing module 5. Vacuum sealing module 5 vacuum-fits and cuts the tray and film. After completion, waste film collection module 6 automatically collects the waste film. Pushing component 7 removes the packaged product from under vacuum sealing module 5, completing one packaging cycle.

[0035] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. For those skilled in the art, various modifications and variations can be made to the embodiments of the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic vacuum skin packaging machine with an adjustable width film feed cylinder, characterized in that, include: The rack (2) has an inverted U-shaped structure and is installed on the bottom chassis (1); The film feeding assembly, installed on the frame (2), includes a film roll (33) and a mounting frame (31) disposed on the film feeding air shaft (32). The film feeding roller assembly (4) is installed on the frame (2) and located below the film dispensing assembly; A vacuum pressing module (5) is installed in the chassis (1), and a waste membrane collection module (6) is provided on its exterior. The waste membrane collection module (6) is located on the left side of the vacuum pressing module (5). Push component (7) is installed in the chassis (1); A pallet mold (8) is mounted on the base (72) of the push assembly (7) to accommodate the pallet to be processed; The film feeding roller assembly (4) can be adjusted to accommodate film rolls (33) of different lengths.

2. The automatic vacuum skin packaging machine with adjustable width film feed cylinder according to claim 1, characterized in that, The film feeding roller assembly (4) includes: The film feeding roller body (41) is mounted on the inner wall of the frame (2) via a fixed mounting base (44); The connecting cylinder (43) is coaxially mounted on the film feeding roller body (41). An adjustment module is installed on the inner wall of the frame (2), and the adjustment module is located on the left side of the film feeding roller body (41); The film feeding roller body 2 (42) is a non-through hollow shape. One end of it is slidably mounted on the connecting cylinder (43), and the other end is mounted on the adjustment module through the movable mounting seat (45).

3. The automatic vacuum skin packaging machine with adjustable width film feed cylinder according to claim 2, characterized in that, The adjustment module includes: A drive motor (471) is mounted on the frame (2); Gear (472) is mounted on the output shaft of the drive motor (471); A slide bar (475) is mounted on the frame (2) and located behind the drive motor (471); The rack (473) is slidably mounted on the slide rod (475) via a limiting block (474) provided at the bottom, and the rack (473) meshes with the gear (472) for transmission; A connecting plate (477) is installed at the bottom of the rack (473), and the other end is fixedly connected to the movable mounting base (45); An end plate (476) is disposed at the end of the slide bar (475).

4. The automatic vacuum skin packaging machine with adjustable width film feed cylinder of claim 2, wherein, The film feeding roller body 2 (42) has an axially formed adjustment groove (421) on the side near the connecting cylinder (43) for the connecting cylinder (43) to move.

5. The automatic vacuum skin packaging machine with adjustable width film feed cylinder of claim 2, wherein, The film feeding roller assembly (4) also includes a pair of limiting rings (46), which are symmetrically installed on the first film feeding roller body (41) and the second film feeding roller body (42).

6. The automatic vacuum skin packaging machine with adjustable width film feed cylinder of claim 4, wherein, A pair of protrusions (431) are provided on the outer periphery of the connecting cylinder (43). The protrusions (431) and the film feeding roller body (42) are symmetrically provided with a pair of second sliding grooves (422) that slide in a corresponding manner.

7. The automatic vacuum skin packaging machine with adjustable width film feed cylinder of claim 4, wherein, A retaining ring (48) is provided at one end of the film feeding roller body (42) near the adjusting groove (421).

8. The automatic vacuum skin packaging machine with adjustable width film feed cylinder of claim 1, wherein, The push component (7) includes: An electronic actuator (71) is mounted on the chassis (1); The base (72) is connected to the end of the piston rod of the electronic push rod (71); A sliding block (73) is installed at the bottom of the base (72), and the sliding block (73) is in sliding cooperation with a first sliding groove (11) formed on the cabinet (1).

9. The automatic vacuum skin packaging machine with adjustable width film feed cylinder of claim 1, wherein, A position sensor (9) is also installed on the inner side wall of the rack (2).