A new type of packaging machine

By utilizing the pre-tightening device and pre-tightening structure within the pre-tightening unit, and leveraging the spring's rebound force to rotate the pre-tightening roller, the problem of the cumbersome disassembly and adjustment of the tension of the stretch film pre-tightening device in existing technologies is solved, thereby improving the stability and efficiency of the packaging machine.

CN224491682UActive Publication Date: 2026-07-14FUZHOU WEIXIAO IND CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
FUZHOU WEIXIAO IND CO LTD
Filing Date
2025-08-06
Publication Date
2026-07-14

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Abstract

The utility model discloses a novel packing machine. A novel packing machine, including pre -tightening device, be provided with pre -tightener in pre -tightening device, install pre -tightening structure in pre -tightener, be provided with spring in pre -tightening structure, be connected with outer tube on spring, the embedded solid of clamping bolt has on outer tube, install the connecting key on the side of clamping bolt, be provided with outer wall on the side of connecting key, install inner tube on the side of outer wall. The utility model discloses through the spring in pre -tightening device, the outward extension of pre -tightening stick is carried out all the time, and cooperate on pre -tightening stick and rotate around the pivot, so as to let the stretch film on pivot pre -tightening stick can be pre -tensioned and the adjustment of convenient stretch tightness all the time, effectively avoid the stretch film pre -tightening device in the operation of the stretch film tightness of need to adjust, need to take down all stretch film from the roller, cause the process of stretch film pre -tightening device adjustment stretch film tightness to be more complicated and complex.
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Description

Technical Field

[0001] This utility model relates to the field of packaging machine equipment technology, specifically a new type of packaging machine. Background Technology

[0002] Stretch film packaging machines are mechanical devices that use stretch film as a consumable for product packaging. They emerged as a type of packaging machine to reduce labor costs and save on packaging expenses, as people's demands for logistics efficiency continue to increase. In certain specialized industries, such as those producing tire cord fabric and tin cans, they have gradually become a common packaging method.

[0003] The prior art, application number CN202020915889.7, provides a stretch film pre-tightening device for a stretch film packaging machine, including a column, a rotating shaft rotatably mounted on the column, a connecting block hinged to the top of the column, a connecting rod welded to the connecting block, a short shaft horizontally welded to the connecting rod, one end of the short shaft being movably connected to a tension spring, the other end of the tension spring being movably connected to the column, a sliding rod welded to the connecting block, a spring sleeved on the sliding rod, the end of the sliding rod being slidably connected to a sliding tube, a connecting plate welded to the sliding tube, a rotating shaft rotatably connected to the connecting plate, one end of the rotating shaft being rotatably mounted on a rotating disk, and multiple rollers rotatably mounted on the rotating disk. This device can adjust the pre-tightening force on the stretch film.

[0004] In the aforementioned patent, the tension spring is used to force the slide tube to detach from the slide rod, thereby achieving the purpose of tightening the stretch film. However, this method of tightening the stretch film requires the entire spring to be engaged inside the slide tube and the slide rod. As a result, when the tension of the stretch film pre-tightening device needs to be adjusted during operation, the entire stretch film needs to be removed from the roller, and the entire tension of the stretch film pre-tightening device needs to be disassembled in order to remove the spring. This makes the process of adjusting the tension of the stretch film pre-tightening device cumbersome and complicated. Summary of the Invention

[0005] To address the aforementioned problems, this utility model provides a novel packaging machine. By using a pre-tensioner within the pre-tensioning device, the new packaging machine can continuously pre-tension and stretch the stretch film during use, effectively avoiding the impact on the normal operation of the new packaging machine caused by the inability to continuously pre-tension and stretch the film.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A novel packaging machine includes a pre-tightening device. The pre-tightening device contains a pre-tightening unit, which in turn contains a pre-tightening structure. A spring is located within the pre-tightening structure, and an outer cylinder is connected to the spring. A locking bolt is embedded in the outer cylinder, and a connecting key is installed beside the locking bolt. An outer wall is formed beside the connecting key, and an inner cylinder is installed beside the outer wall. The inner side of the outer cylinder engages with the outer side of the inner cylinder, and the inner side of the outer wall is secured to the outer side of the locking bolt. This secure engagement of the inner side of the outer wall with the outer side of the locking bolt makes the internal structure of the novel packaging machine more robust and reliable, greatly improving the stability of its operation.

[0007] Furthermore, the pre-tightening device has a pre-embedded packaging body, a heater engaged with the packaging body, a controller installed next to the heater, and a pre-embedded cutting packaging device. The controller is internally connected to the cutting packaging device, and the cutting packaging device works in conjunction with the heater. This cooperation between the cutting packaging device and the heater allows the new packaging machine to package materials more quickly, improving its packaging efficiency.

[0008] Furthermore, the packaging body is embedded with a film-winding roller, a rotating roller is engaged with the packaging body, a film-receiving roller is installed next to the pre-tensioner, and a motor is located next to the pre-tensioner. The interior of the rotating roller cooperates with the interior of the film-winding roller, and the front end of the motor is nested with one side of the film-receiving roller. This nesting of the motor front end with one side of the film-receiving roller allows the motor's rotation to directly drive the film-receiving roller, improving the interconnectivity of the internal structure of the new packaging machine.

[0009] Furthermore, a material discharge plate is installed next to the pre-tensioner, and a plurality of electric push rods are provided next to the material discharge plate. The inner side of the material discharge plate cooperates with the interior of the cutting and packaging device, and the interior of the electric push rods cooperates with the interior of the cutting and packaging device. The extension and retraction of the electric push rods can directly extend and retract the cutting and packaging device accordingly, greatly improving the integrity of the internal structure of the new packaging machine.

[0010] Furthermore, a pre-tensioning roller is engaged with the pre-tensioning structure, a rotating shaft is installed next to the pre-tensioning roller, a fixing key is embedded in the pre-tensioning structure, and a fixing bolt is installed next to the fixing key. The inner side of the rotating shaft is fixedly engaged with the inner side of the pre-tensioning structure. This fixed engagement of the inner side of the rotating shaft with the inner side of the pre-tensioning structure makes the internal structure of the new packaging machine more robust and reliable, greatly improving the safety of the new packaging machine's operation.

[0011] Furthermore, the inner side of the fixing bolt mates with the inner side of the fixing key, the outer side of the inner cylinder is embedded with the inner side of the connecting key, the outer side of the rotating shaft is connected to the inner side of the connecting key, and the outer side of the fixing bolt engages with the inner side of the outer wall. This engagement of the outer side of the fixing bolt with the inner side of the outer wall makes the internal structure of the new packaging machine more robust and reliable, greatly improving the reliability of its operation. Beneficial effects

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] This invention utilizes a spring within the pre-tensioning device to continuously extend the pre-tensioning rod outwards, which, in conjunction with the pre-tensioning rod's rotation around a rotating shaft, allows the stretching film on the pre-tensioning rod to be constantly pre-tensioned and facilitates adjustment of the stretching tension. This effectively avoids the cumbersome and complex process of removing the entire stretching film from the roller when adjusting the tension of the stretching film during operation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a novel packaging machine according to the present invention;

[0015] Figure 2 This is a three-dimensional structural diagram of the pre-tightening device of this utility model;

[0016] Figure 3 This is a partially enlarged three-dimensional structural diagram of A of this utility model;

[0017] Figure 4 This is a three-dimensional structural diagram of the pre-tightening structure of this utility model.

[0018] In the diagram: 1. Pre-tightening device; 2. Controller; 3. Cutting and packaging device; 4. Rotating roller; 5. Film wrapping roller; 6. Heater; 7. Packaging body; 11. Pre-tightening device; 12. Electric push rod; 13. Motor; 14. Film take-up roller; 15. Material drop plate; 111. Pre-tightening structure; 112. Pre-tightening roller; 113. Rotating shaft; 114. Fixing bolt; 115. Fixing key; 1111. Spring; 1112. Outer cylinder; 1113. Inner cylinder; 1114. Outer wall; 1114. Snapping bolt; 1115. Connecting key; 1116. Detailed Implementation

[0019] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Example 1

[0021] like Figures 1-4 As shown, Figure 1 This is a schematic diagram of the structure of a novel packaging machine according to the present invention; Figure 2 This is a three-dimensional structural diagram of the pre-tightening device of this utility model; Figure 3 This is a partially enlarged three-dimensional structural diagram of A of this utility model; Figure 4 This is a three-dimensional structural diagram of the pre-tightening structure of this utility model.

[0022] This utility model provides a novel packaging machine. The novel packaging machine includes a pre-tightening device 1, a pre-tightening unit 11 inside the pre-tightening device 1, a pre-tightening structure 111 installed inside the pre-tightening unit 11, a spring 1111 inside the pre-tightening structure 111, an outer cylinder 1112 connected to the spring 1111, a locking bolt 1115 embedded in the outer cylinder 1112, a connecting key 1116 installed beside the locking bolt 1115, an outer wall 1114 formed beside the connecting key 1116, and an inner cylinder 1113 installed beside the outer wall 1114. The inner side of 1112 engages with the outer side of the inner cylinder 1113, and the inner side of the outer wall 1114 is secured to the outer side of the locking bolt 1115. A packaging body 7 is embedded in the pre-tightening device 1, a heater 6 is engaged in the packaging body 7, a controller 2 is installed next to the heater 6, a packaging cutter 3 is embedded in the packaging body 7, the inside of the controller 2 is connected to the inside of the packaging cutter 3, and the inside of the packaging cutter 3 cooperates with the inside of the heater 6. A film-winding roller 5 is embedded in the packaging body 7, and a rotating roller is engaged in the packaging body 7. 4. A film-receiving roller 14 is installed next to the pre-tensioner 11. A motor 13 is installed next to the pre-tensioner 11. The interior of the rotating roller 4 cooperates with the interior of the wrapping roller 5. The front end of the motor 13 is nested with one side of the film-receiving roller 14. A material discharge plate 15 is installed next to the pre-tensioner 11. A plurality of electric push rods 12 are installed next to the material discharge plate 15. The interior of the material discharge plate 15 cooperates with the interior of the cutting and packaging device 3. The interior of the electric push rods 12 cooperates with the interior of the cutting and packaging device 3. A pre-tensioning roller 112 is engaged on the pre-tensioning structure 111. A rotating shaft 113 is installed next to the pre-tightening roller 112. A fixing key 115 is embedded in the pre-tightening structure 111. A fixing bolt 114 is installed next to the fixing key 115. The inner side of the rotating shaft 113 is fixed to the inner side of the pre-tightening structure 111. The inner side of the fixing bolt 114 is engaged with the inner side of the fixing key 115. The outer side of the inner cylinder 1113 is fixed to the inner side of the connecting key 1116. The outer side of the rotating shaft 113 is connected to the inner side of the connecting key 1116. The outer side of the fixing bolt 114 is engaged with the inner side of the outer wall 1114.

[0023] The motor model selected is KRC130, which has the advantages of low noise, high torque, stable operation and small size, allowing it to rotate more stably in the new packaging machine.

[0024] The controller selected is model AT10-10A. Its advantages, such as dual MOS anti-backflow circuit, ultra-low heat, short circuit protection, reverse connection protection, and automatic identification, allow the controller to more sensitively control the electronic components inside the new packaging machine.

[0025] The electric actuator uses model XDHA24-500, whose built-in silent gears, stable base, and low-resistance metal shell allow it to operate stably for extended periods in modern packaging machines.

[0026] The working principle of this utility model is explained below: When in use, the new packaging machine is supported by the packaging body 7. All electronic components inside the packaging body 7 are controlled by the controller 2. When materials are placed inside the new packaging machine, they are driven by the conveyor belt inside the machine, and heated, cut, and packaged in conjunction with the heater 6 and the cutting packaging device 3. Since packaging machines are mature existing technology, this utility model has not been described in detail. When using the new packaging machine, the operator wraps the stretch film around the wrapping roller 5, passes it around the rotating roller 4, through the cutting packaging device 3, and wraps it around the pre-tightening roller 112. Finally, it is wrapped around the take-up roller 14 for final tightening. The motor 13 can follow the conveyor belt. The rotation completes the cooperation between the stretch film and the new packaging machine. The inner cylinder 1113 can move inside the outer cylinder 1112. The pre-tightening structure 111 in operation will directly use the rebound force of the spring 1111 to make the pre-tightening roller 112 rotate with the rotating shaft 113, so that the stretch film on the pre-tightening roller 112 is always pre-tightened in the direction away from the rotating roller 4. When the user needs to replace the spring 1111, he can directly rotate the locking bolt 1115 to separate the outer cylinder 1112 from the outer wall 1114 and pull the outer cylinder 1112 down to overlap with the inner cylinder 1113. At this time, the operator can quickly replace the spring by putting the new spring into the outer cylinder 1112 and the inner cylinder 1113.

[0027] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0028] Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A novel packaging machine, characterized in that, The device includes a pre-tightening device (1), which has a pre-tightening device (11) inside. The pre-tightening device (11) has a pre-tightening structure (111) inside. The pre-tightening structure (111) has a spring (1111) inside. An outer cylinder (1112) is connected to the spring (1111). A locking bolt (1115) is embedded in the outer cylinder (1112). A connecting key (1116) is installed next to the locking bolt (1115). An outer wall (1114) is opened next to the connecting key (1116). An inner cylinder (1113) is installed next to the outer wall (1114). The inner side of the outer cylinder (1112) engages with the outer side of the inner cylinder (1113). The inner side of the outer wall (1114) is fixed to the outer side of the locking bolt (1115).

2. The novel packaging machine according to claim 1, characterized in that: The pre-tightening device (1) has a built-in packaging body (7) embedded in it. A heater (6) is engaged on the packaging body (7). A controller (2) is installed next to the heater (6). A built-in cutting packaging device (3) is embedded in the packaging body (7). The inside of the controller (2) is connected to the inside of the cutting packaging device (3). The inside of the cutting packaging device (3) is engaged with the inside of the heater (6).

3. The novel packaging machine according to claim 2, characterized in that: The packaging body (7) has a wrapping roller (5) embedded in it, a rotating roller (4) is engaged on the packaging body (7), a take-up roller (14) is installed next to the pre-tightener (11), a motor (13) is provided next to the pre-tightener (11), the inside of the rotating roller (4) is engaged with the inside of the wrapping roller (5), and the front end of the motor (13) is nested with one side of the take-up roller (14).

4. A novel packaging machine according to claim 2, characterized in that: A material drop plate (15) is installed next to the pre-tightener (11), and a plurality of electric push rods (12) are provided next to the material drop plate (15). The inner side of the material drop plate (15) cooperates with the inside of the cutting and packaging machine (3), and the inside of the electric push rod (12) cooperates with the inside of the cutting and packaging machine (3).

5. A novel packaging machine according to claim 1, characterized in that: A pre-tightening rod (112) is engaged on the pre-tightening structure (111), a rotating shaft (113) is installed next to the pre-tightening rod (112), a fixing key (115) is embedded on the pre-tightening structure (111), a fixing bolt (114) is installed next to the fixing key (115), and the inner side of the rotating shaft (113) is fixed to the inner side of the pre-tightening structure (111).

6. A novel packaging machine according to claim 5, characterized in that: The inner side of the fixing bolt (114) is engaged with the inner side of the fixing key (115), the outer side of the inner cylinder (1113) is embedded with the inner side of the connecting key (1116), the outer side of the rotating shaft (113) is connected to the inner side of the connecting key (1116), and the outer side of the fixing bolt (114) is engaged with the inner side of the outer wall (1114).