A constant tension traction stretching film production traction device

By adjusting the traction tension in stretch film production using an electric guide rail and slider system, the problems of slow response speed and poor stability of hydraulic rods were solved, achieving rapid response and stable tension control. This improved tension control and stability, and avoided stability problems caused by oil temperature changes and contamination.

CN224547640UActive Publication Date: 2026-07-24FOSHAN NANHAI BAOBIDE PACKAGING MATERIALS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
FOSHAN NANHAI BAOBIDE PACKAGING MATERIALS CO LTD
Filing Date
2025-09-13
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

In the existing stretch film production process, the hydraulic rod adjusts the traction tension with a slow response speed, and its stability is poorly affected by changes in oil temperature and oil contamination, leading to film breakage or deformation.

Method used

An electric guide rail and electric slider system are used to drive the traction roller to move. Combined with pressure sensors and encoders, the traction tension is adjusted in real time. The height and angle of the traction roller are adjusted by the electric slider system through the electric guide rail and electric slider system to achieve fast response and stable traction tension.

Benefits of technology

It enables rapid adjustment of traction tension, improves the response speed and stability of traction tension, and avoids stability problems caused by oil temperature changes and contamination.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the field of stretch film production technology discloses a kind of constant tension traction's stretch film production traction device, including processing table and two conveying roller components, two horizontal guide rail components are symmetrically arranged in the both sides of the one end of processing table top, rotating plate component is arranged in the other end of processing table top, two the top of horizontal guide rail component is respectively provided with two top rod components, two traction guide rail components are symmetrically arranged in the both sides of the top of rotating plate component, two the top of traction guide rail component is respectively provided with two pressure mounting seat, two the top of pressure mounting seat is close to one side and is provided with traction roller component;The utility model is moved by two traction electric guide rails respectively with two traction electric sliding block, and further the traction roller component of big emperor top moves along the rotating plate component of inclination setting, can be quickly adjusted height, and further adjust traction tension, response speed is fast, and two traction guide rail components cannot be influenced by oil change, and stability is better.
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Description

Technical Field

[0001] This utility model relates to the field of stretch film production technology, specifically a constant tension traction stretch film production traction device. Background Technology

[0002] Stretch film, also known as wrapping film, stretch wrap, or food preservation film, is a polymer film made from raw materials such as polyethylene and polyvinyl chloride. It has the characteristics of high elasticity, high transparency, and self-adhesion, and is widely used in packaging, transportation, warehousing and other fields.

[0003] In the existing stretch film production traction process, in order to prevent the stretch film from breaking or deforming due to uneven tension, hydraulic rods are usually used to drive the traction rollers to adjust the traction tension. However, hydraulic rods require a certain amount of time to adjust the oil pressure for extension and retraction, resulting in a slow response speed. Furthermore, the tension of the hydraulic rods is easily affected by factors such as oil temperature changes and oil contamination, leading to poor stability. In order to respond quickly and adjust the traction tension while maintaining a stable traction tension, this application proposes a constant tension traction stretch film production traction device. Utility Model Content

[0004] The purpose of this invention is to provide a constant tension traction device for stretch film production, in order to prevent the stretch film from breaking or deforming due to uneven tension during the existing stretch film production traction process. In this case, a hydraulic rod is usually used to drive the traction roller to move, thereby adjusting the traction tension. However, the hydraulic rod needs a certain amount of time to adjust the oil pressure for extension and retraction, resulting in a slow response speed. Furthermore, the tension of the hydraulic rod is easily affected by factors such as oil temperature changes and oil contamination, leading to poor stability.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a constant tension traction stretch film production traction device, comprising a processing table, two horizontal guide rail components symmetrically arranged on both sides of one top end of the processing table, a rotating plate component arranged on the other top end of the processing table, two top rod components respectively arranged on the top of the two horizontal guide rail components, two traction guide rail components symmetrically arranged on both sides of the top of the rotating plate component, two pressure mounting seats respectively arranged on the top of the two traction guide rail components, and traction roller components arranged on one side close to each other on the top of the two pressure mounting seats.

[0006] The two horizontal guide rail components include two horizontal electric guide rails, with two horizontal electric sliders slidably connected to the top of each of the two horizontal electric guide rails, and the bottom of the horizontal electric guide rails fixedly connected to the processing table.

[0007] The rotating plate component includes a U-shaped rotating plate. Two plate mounting seats are symmetrically rotatably connected to the two sides of the lower surface of the U-shaped rotating plate away from the horizontal guide rail component. The bottom of the two plate mounting seats is fixedly connected to the processing table.

[0008] The two top rod components include two rod bases, with two top rods rotatably connected to the top of each rod base. The bottom of each rod base is fixedly connected to two horizontal electric sliders. The top of each top rod is rotatably connected to two rod top seats, and the top of each rod top seat is fixedly connected to both sides of the other end of the U-shaped rotating plate.

[0009] The two traction guide rail components include two traction electric guide rails, with two traction electric sliders slidably connected to the top of each of the two traction electric guide rails, and the bottom of each traction electric guide rail being fixedly connected to both sides of the upper surface of the U-shaped rotating plate.

[0010] Each of the two pressure mounting seats includes two pads, with two pressure sensors fixedly connected to the top of each pad, and two traction electric sliders fixedly connected to the bottom of each pad. Two traction mounting seats are fixedly connected to the top of each pressure sensor.

[0011] The traction roller component includes a traction roller, one end of which passes through a traction mounting seat and is fixedly connected to a traction motor. Both ends of the traction roller are rotatably connected to two traction mounting seats respectively, and the traction motor is fixedly connected to the traction mounting seat.

[0012] The processing table has two conveyor roller components symmetrically arranged at both ends of its top. Each conveyor roller component includes two conveyor mounting seats. Two conveyor rollers are rotatably connected to the inner top of each of the two conveyor mounting seats. Two conveyor motors are fixedly connected to one side of the top of each conveyor mounting seat. The bottom of each conveyor mounting seat is fixedly connected to the processing table. The output ends of the two conveyor motors pass through the two conveyor mounting seats and are fixedly connected to one end of each of the two conveyor rollers.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model uses two traction electric guide rails to drive two traction electric sliders to move, and then the traction roller component at the top of the device moves along the inclined rotating plate component, which can quickly adjust the height and thus adjust the traction tension. The response speed is fast, and the two traction guide rail components are not affected by changes in oil, resulting in better stability.

[0015] 2. This utility model uses two horizontal electric guide rails to drive two horizontal electric sliders to move, which in turn drives two top rod components to move, lifts the rotating plate component, and drives the rotating plate component to rotate, adjusts the tilt angle, and further adjusts the height of the traction roller component, so as to better adjust the traction tension. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall main structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the installation structure of the horizontal guide rail component of this utility model;

[0018] Figure 3 This is a schematic diagram of the installation structure of the rotating plate component of this utility model;

[0019] Figure 4 This is a schematic diagram of the mounting structure of the push rod component of this utility model;

[0020] Figure 5 This is a schematic diagram of the pressure mounting base installation structure of this utility model;

[0021] Figure 6 This is a schematic diagram of the installation structure of the traction roller component of this utility model;

[0022] Figure 7 This is a schematic diagram of the conveyor roller component of this utility model;

[0023] In the diagram: 1. Processing table; 2. Horizontal guide rail assembly; 201. Horizontal electric guide rail; 202. Horizontal electric slider; 3. Rotating plate assembly; 301. U-shaped rotating plate; 302. Plate mounting seat; 4. Top rod assembly; 401. Rod base; 402. Top rod; 403. Rod top seat; 5. Traction guide rail assembly; 501. Traction electric guide rail; 502. Traction electric slider; 6. Pressure mounting seat; 601. Pad; 602. Pressure sensor; 603. Traction mounting seat; 7. Traction roller assembly; 701. Traction roller; 702. Traction motor; 8. Conveyor roller assembly; 801. Conveyor mounting seat; 802. Conveyor roller; 803. Conveyor motor. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Please see Figure 1-7This utility model provides a technical solution: a constant tension traction stretch film production traction device, including a processing table 1, two horizontal guide rail components 2 are symmetrically arranged on both sides of one top end of the processing table 1, a rotating plate component 3 is arranged on the other top end of the processing table 1, two top rod components 4 are respectively arranged on the top of the two horizontal guide rail components 2, two traction guide rail components 5 are symmetrically arranged on both sides of the top of the rotating plate component 3, two pressure mounting seats 6 are respectively arranged on the top of the two traction guide rail components 5, and traction roller components 7 are arranged on one side of the top of the two pressure mounting seats 6 that are close to each other.

[0026] Among them, the two horizontal guide rail components 2 include two horizontal electric guide rails 201, and two horizontal electric sliders 202 are slidably connected to the top of the two horizontal electric guide rails 201 respectively. The bottom of the horizontal electric guide rails 201 is fixedly connected to the processing table 1. By setting the two horizontal guide rail components 2, the two push rod components 4 can be moved, thereby driving the rotating plate component 3 to rotate, adjusting the tilt angle, and thus adjusting the traction tension of the traction roller component 7.

[0027] The rotating plate component 3 includes a U-shaped rotating plate 301. Two plate mounting seats 302 are symmetrically rotatably connected to the two sides of the lower surface of the U-shaped rotating plate 301 away from the horizontal guide rail component 2. The bottom of the two plate mounting seats 302 is fixedly connected to the processing table 1. By setting the U-shaped rotating plate 301, the stretching film can pass through the U-shaped rotating plate 301 more conveniently and bypass the traction roller component 7 to adjust the traction tension.

[0028] The two push rod components 4 include two rod bases 401, with two push rods 402 rotatably connected to the top of each rod base 401. The bottom of each rod base 401 is fixedly connected to two horizontal electric sliders 202. The tops of each push rod 402 are rotatably connected to two rod top seats 403. The tops of each rod top seat 403 are fixedly connected to the two sides of the other end of the U-shaped rotating plate 301. By setting the two push rod components 4, the rotating plate component 3 can be rotated, the tilt angle can be adjusted, and thus the height of the traction roller component 7 can be adjusted, thereby adjusting the traction tension.

[0029] Among them, the two traction guide rail components 5 include two traction electric guide rails 501, and two traction electric sliders 502 are slidably connected to the top of the two traction electric guide rails 501 respectively. The bottom of the traction electric guide rails 501 is fixedly connected to both sides of the upper surface of the U-shaped rotating plate 301 respectively. By setting the two traction guide rail components 5, the traction roller component 7 can be driven to move along the inclined rotating plate component 3 to adjust the height and thus adjust the traction tension.

[0030] The two pressure mounting seats 6 each include two pads 601. Two pressure sensors 602 are fixedly connected to the top of the two pads 601 respectively. The bottom of the pads 601 is fixedly connected to two traction electric sliders 502 respectively. Two traction mounting seats 603 are fixedly connected to the top of the two pressure sensors 602 respectively. By setting two pressure sensors 602, the reaction force of the stretching film on the traction roller component 7 can be monitored, thereby monitoring the traction tension, which makes it easy to adjust the position of the traction roller component 7 accordingly.

[0031] The traction roller component 7 includes a traction roller 701. One end of the traction roller 701 passes through the traction mounting seat 603 and is fixedly connected to a traction motor 702. Both ends of the traction roller 701 are rotatably connected to two traction mounting seats 603 respectively. The traction motor 702 is fixedly connected to the traction mounting seat 603.

[0032] The processing table 1 has two conveyor roller components 8 symmetrically arranged at both ends of its top. Each conveyor roller component 8 includes two conveyor mounting seats 801. Two conveyor rollers 802 are rotatably connected to the inner top of each of the two conveyor mounting seats 801. Two conveyor motors 803 are fixedly connected to one side of the top of each of the two conveyor mounting seats 801. The bottom of each conveyor mounting seat 801 is fixedly connected to the processing table 1. The output ends of the two conveyor motors 803 pass through the two conveyor mounting seats 801 and are fixedly connected to one end of each of the two conveyor rollers 802. By setting up two conveyor roller components 8, the stretch film can be stably driven to move, thereby adjusting the stretch film's traction tension.

[0033] Working principle: The stretch film passes through the bottom of the conveyor roller assembly 8 at one end of the top of the processing table 1, then around the top of the traction roller assembly 7, and passes through the bottom of the conveyor roller assembly 8 at the other end of the top of the processing table 1. Two conveyor motors 803 drive the two conveyor rollers 802 to rotate, continuously moving the stretch film. The traction motor 702 drives the traction roller 701 to rotate, which in turn moves the stretch film along with the two conveyor roller assemblies 8. During this process, the stretch film presses down on the traction roller 701, which in turn drives the two traction mounting seats 603 to press down, transmitting the pressure to the two pressure sensors 602. The two pressure sensors 602 convert the pressure signal into an electrical signal and transmit it to the encoder. The encoder then calculates the signal according to the pre-set parameters. The traction tension parameters are set first. The positions of the two horizontal electric sliders 202 and the two traction electric sliders 502 on the two horizontal electric guide rails 201 and the two traction electric guide rails 501 are adjusted respectively. The two horizontal electric sliders 202 drive the two rod bases 401 to move, which in turn drives the two top rods 402 to move. The two top rods 402 drive the U-shaped rotating plate 301 to rotate around the plate mounting seat 302 through the two rod top seats 403 respectively. The tilt angle of the U-shaped rotating plate 301 is adjusted. The two traction electric sliders 502 drive the traction roller component 7 to move along the tilted U-shaped rotating plate 301, thereby adjusting the height of the traction roller component 7, further adjusting the traction tension, and keeping the traction tension constant.

[0034] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

Claims

1. A constant tension traction stretch film production traction device, comprising a processing table (1), characterized in that: Two horizontal guide rail components (2) are symmetrically arranged on both sides of one top end of the processing table (1), and a rotating plate component (3) is arranged on the other top end of the processing table (1). Two push rod components (4) are respectively arranged on the top of the two horizontal guide rail components (2). Two traction guide rail components (5) are symmetrically arranged on both sides of the top of the rotating plate component (3). Two pressure mounting seats (6) are respectively arranged on the top of the two traction guide rail components (5). Traction roller components (7) are arranged on one side of the top of the two pressure mounting seats (6) that are close to each other.

2. The constant tension traction stretch film production traction device according to claim 1, characterized in that: The two horizontal guide rail components (2) include two horizontal electric guide rails (201), and two horizontal electric sliders (202) are slidably connected to the top of the two horizontal electric guide rails (201), and the bottom of the horizontal electric guide rails (201) is fixedly connected to the processing table (1).

3. The constant tension traction stretch film production traction device according to claim 2, characterized in that: The rotating plate component (3) includes a U-shaped rotating plate (301). Two plate mounting seats (302) are symmetrically rotatably connected to the two sides of the lower surface of the U-shaped rotating plate (301) away from the horizontal guide rail component (2). The bottom of the two plate mounting seats (302) is fixedly connected to the processing table (1).

4. The constant tension traction stretch film production traction device according to claim 3, characterized in that: The two top rod components (4) include two rod bases (401), the tops of the two rod bases (401) are rotatably connected to two top rods (402), the bottoms of the rod bases (401) are fixedly connected to two horizontal electric sliders (202), the tops of the two top rods (402) are rotatably connected to two rod top seats (403), and the tops of the two rod top seats (403) are fixedly connected to the two sides of the other end of the U-shaped rotating plate (301).

5. The constant tension traction stretch film production traction device according to claim 3, characterized in that: The two traction guide rail components (5) include two traction electric guide rails (501), and two traction electric sliders (502) are slidably connected to the top of the two traction electric guide rails (501). The bottom of the traction electric guide rails (501) is fixedly connected to both sides of the upper surface of the U-shaped rotating plate (301).

6. The constant tension traction stretch film production traction device according to claim 5, characterized in that: The two pressure mounting seats (6) each include two pads (601), the tops of the two pads (601) are respectively fixedly connected to two pressure sensors (602), the bottoms of the pads (601) are respectively fixedly connected to two traction electric sliders (502), and the tops of the two pressure sensors (602) are respectively fixedly connected to two traction mounting seats (603).

7. The constant tension traction stretch film production traction device according to claim 6, characterized in that: The traction roller component (7) includes a traction roller (701), one end of which passes through a traction mounting seat (603) and is fixedly connected to a traction motor (702). Both ends of the traction roller (701) are rotatably connected to two traction mounting seats (603) respectively, and the traction motor (702) is fixedly connected to the traction mounting seat (603).

8. The constant tension traction stretch film production traction device according to claim 1, characterized in that: The processing table (1) has two conveyor roller components (8) symmetrically arranged at both ends of its top. The two conveyor roller components (8) include two conveyor mounting seats (801). The inner top of the two conveyor mounting seats (801) is rotatably connected to two conveyor rollers (802). The top side of the conveyor mounting seats (801) is fixedly connected to two conveyor motors (803). The bottom of the conveyor mounting seats (801) is fixedly connected to the processing table (1). The output ends of the two conveyor motors (803) pass through the two conveyor mounting seats (801) and are fixedly connected to one end of the two conveyor rollers (802).