Film stretching device for packaging

Abstract

The utility model discloses a packaging film stretching device which comprises a base plate, a moving groove, a transmission groove and an equipment groove are sequentially formed in the base plate from top to bottom, and the bottom of the equipment groove is fixedly connected with a driving motor. According to the film stretching device for packaging, by using a bidirectional threaded motor, two opposite I-shaped plates can move inwards, then a pressing and fixing plate can clamp and fix a film, and then a gear making contact with a driving assembly and a movable plate is matched, so that when the driving assembly is driven by a driving motor to rotate, the film can be stretched out through the pressing and fixing plate; the gear can drive the moving plate to move inwards and outwards, then the pressing and fixing plate can stretch the four positions of the film, due to the fact that the transmission efficiency is the same, the stretching force of the pressing and fixing plate on the film is uniform, the film can be prevented from being broken, and therefore the protection performance of the device can be improved.

Description

Technical Field

[0001] This utility model relates to the field of film stretching technology, specifically a film stretching device for packaging. Background Technology

[0002] A thin film is a layer of material with a thickness on the order of micrometers or nanometers, typically much smaller than its other two dimensions. Thin films can be made from various materials, including metals, polymers, ceramics, and semiconductors. Depending on their application and processing method, films can have different properties and functions. For packaging films, to improve their mechanical strength, heat-sealing properties, and flexibility during use, stretching devices are usually employed to stretch the film.

[0003] Currently, film stretching devices on the market typically consist of a clamping device, a base plate, and a moving device. To prevent film breakage due to unequal moving speeds during stretching, users often use four telescopic devices with the same power to push the clamping device and then stretch the film fixed by the clamping device. However, this method significantly increases the energy consumed during stretching, and the film often becomes thinner during the stretching process. Since the clamping device has a fixed fixing gap, the film may separate from the clamping device when the film thickness decreases to a certain level.

[0004] To address this issue, the present invention provides a film stretching device for packaging, which uses a single device to uniformly stretch the film on all four sides and automatically adjust and clamp the film, thereby solving the aforementioned problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a film stretching device for packaging, which solves the aforementioned problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a film stretching device for packaging, comprising a substrate, wherein a moving groove, a transmission groove, and a device groove are sequentially formed inside the substrate from top to bottom; a drive motor is fixedly connected to the bottom of the device groove; a drive assembly is fixedly connected to the output rod of the drive motor; there are four moving grooves; a rotating rod is installed on the top of each of the four moving grooves; a gear is fixedly connected to the outer surface of the rotating rod; a moving plate is slidably connected inside the moving groove; a fixed plate is fixedly connected to the side of the moving plate away from the center of the substrate; a lifting assembly is fixedly connected to the top of the fixed plate; and a clamping assembly is fixedly connected to the side of the lifting assembly near the center of the substrate.

[0007] Preferably, the lifting assembly includes a U-shaped plate, an electric telescopic device is fixedly connected to the top of the inner wall of the U-shaped plate, the output rod of the electric telescopic device is fixedly connected to a support plate, and a fixing rod is fixedly connected to the side of the support plate near the center of the base plate.

[0008] Preferably, a telescopic rod is fixedly connected to the top of the U-shaped plate, and the top of the telescopic rod is connected to the bottom of the support plate.

[0009] Preferably, the clamping assembly includes a protective plate, the side of the protective plate away from the center of the substrate is connected to a fixing rod, a bidirectional threaded motor is fixedly connected to the top of the protective plate, and I-shaped plates are slidably connected to the top and bottom of the output rod surface of the bidirectional threaded motor. A spring is fixedly connected to the side of the I-shaped plate near the center of the protective plate, and a pressure plate is fixedly connected to the side of the spring away from the I-shaped plate.

[0010] Preferably, a limiting rod is fixedly connected to the bottom of the inner cavity of the protective plate, and a limiting groove is opened on the top of the I-shaped plate, wherein the outer diameter of the limiting rod is adapted to the inner diameter of the limiting groove.

[0011] Preferably, a through-wheel groove is provided between the moving groove and the transmission groove, and a portion of the rotating rod and gear passes through the through-wheel groove and is located inside the transmission groove.

[0012] Preferably, the drive assembly includes a cylinder, and an annular plate is fixedly connected to the top of the cylinder. A gear groove is formed inside the annular plate, and the gear groove meshes with the outer surface of a gear.

[0013] Preferably, the center of the movable plate has a hollow groove, and the side wall of the hollow groove has a rack groove, which is in contact with the outer surface of the gear.

[0014] Beneficial effects

[0015] This invention provides a film stretching device for packaging. Compared with the prior art, it has the following advantages:

[0016] Beneficial effects:

[0017] (1) The packaging film stretching device uses a bidirectional threaded motor to allow two opposing I-plates to move inward, thereby enabling the clamping plate to clamp and fix the film. Then, in conjunction with gears that are in contact with both the drive assembly and the moving plate, the drive motor drives the drive assembly to rotate, which in turn drives the moving plate to move inward and outward. This allows the clamping plate to stretch the film at four positions. Because the transmission efficiency is the same, the stretching force of the clamping plate on the film is uniform, which can prevent the film from breaking and improve the protective performance of the device. Moreover, this stretching method only requires one device to stretch the film uniformly at four positions, thereby eliminating the energy consumed by multiple devices with the same power for stretching and improving the energy efficiency of the device.

[0018] (2) The film stretching device for packaging allows the protective plate to move up and down through the use of the lifting component, which in turn allows the pressure plate to move up and down with the stretched film. Then, in conjunction with the inward movement of the moving plate, the device can automatically attach the bottom and four sides of the item after the user places the item to be packaged on the film, thereby improving the functionality of the device.

[0019] (3) The film stretching device for packaging uses the reaction force of the spring to drive the pressure plate to continue to press the film when the film becomes thinner due to stretching, thereby preventing the film from detaching from the equipment and further improving the protection of the equipment. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a cross-sectional view of the overall structure of this utility model up to the center of the drive motor;

[0022] Figure 3 This is a top sectional view of the overall structure of this utility model up to the center of the movable plate;

[0023] Figure 4 This is a top sectional view of the overall structure of this utility model up to the center of the drive component;

[0024] Figure 5 This is a cross-sectional view of the overall structure of this utility model up to the center of the protective plate.

[0025] In the diagram: 1. Base plate; 2. Drive motor; 3. Drive assembly; 4. Rotating rod; 5. Gear; 6. Moving plate; 7. Fixed plate; 8. Lifting assembly; 9. Clamping assembly; 10. U-shaped plate; 11. Electric telescopic device; 12. Support plate; 13. Fixed rod; 14. Telescopic rod; 15. Protective plate; 16. Bidirectional threaded motor; 17. I-shaped plate; 18. Spring; 19. Pressure plate; 20. Limiting rod. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1:

[0028] Please see Figure 1-4 A film stretching device for packaging includes a base plate 1. The base plate 1 has a moving groove, a transmission groove, and a device groove sequentially formed from top to bottom inside. A through-wheel groove is formed between the moving groove and the transmission groove. A drive motor 2 is fixedly connected to the bottom of the device groove. A drive assembly 3 is fixedly connected to the output rod of the drive motor 2. During operation of the drive motor 2, the drive assembly 3 can be driven to rotate. The drive assembly 3 includes a cylinder, with an annular plate fixedly connected to the top of the cylinder. A gear groove is formed inside the annular plate. There are four moving grooves, and a rotating rod 4 is installed on the top of each of the four moving grooves. A gear 5 is fixedly connected to the outer surface of the rotating rod 4. Partial positions of the rotating rod 4 and the gear 5 pass through the through-wheel groove and are located inside the transmission groove. The gear groove and the gear... The outer surfaces of the wheel 5 mesh with the gear 5, which meshes with the gear groove, so that the drive assembly 3 can rotate the gear 5 in the opposite direction during rotation. The moving plate 6 is slidably connected inside the moving groove. The center of the moving plate 6 has a hollow groove, and the side wall of the hollow groove has a rack groove. The rack groove contacts the outer surface of the gear 5. The gear 5 in contact with the rack groove can drive the moving plate 6 to move when the gear 5 rotates, which in turn can drive the fixed plate 7, the lifting assembly 8 and the clamping assembly 9 to move. The fixed plate 7 is fixedly connected to the side of the moving plate 6 away from the center of the base plate 1. The lifting assembly 8 is fixedly connected to the top of the fixed plate 7. The clamping assembly 9 is fixedly connected to the side of the lifting assembly 8 close to the center of the base plate 1.

[0029] Example 2:

[0030] Please see Figure 5This embodiment provides a technical solution based on embodiment one: the lifting assembly 8 includes a U-shaped plate 10, an electric telescopic device 11 is fixedly connected to the top of the inner wall of the U-shaped plate 10, the operation of the electric telescopic device 11 can drive the support plate 12 and the fixed rod 13 to move up and down, the output rod of the electric telescopic device 11 is fixedly connected to the support plate 12, the side of the support plate 12 near the center of the base plate 1 is fixedly connected to the fixed rod 13, the top of the U-shaped plate 10 is fixedly connected to the telescopic rod 14, the telescopic rod 14 can support the support plate 12 to work stably, and the top of the telescopic rod 14 is connected to the bottom of the support plate 12.

[0031] Example 3:

[0032] Please see Figure 5 This embodiment provides a technical solution based on Embodiments 1 and 2: the clamping assembly 9 includes a protective plate 15, a limiting rod 20 is fixedly connected to the bottom of the inner cavity of the protective plate 15, the side of the protective plate 15 away from the center of the substrate 1 is connected to the fixing rod 13, and a bidirectional threaded motor 16 is fixedly connected to the top of the protective plate 15. The operation of the bidirectional threaded motor 16 allows the two opposing I-shaped plates 17 to move inward and outward, thereby allowing the two clamping plates 19 to clamp and fix one side of the film. If used alone in conjunction with the driving process of Embodiment 1... The process allows the equipment to stretch the film at a uniform speed. If combined with the driving process of Embodiment 1 and the lifting process of Embodiment 2, the equipment can automatically perform film packaging on the items that need to be packaged. The top and bottom of the output rod surface of the bidirectional threaded motor 16 are slidably connected to the I-shaped plate 17. The top of the I-shaped plate 17 is provided with a limiting groove. The outer diameter of the limiting rod 20 is adapted to the inner diameter of the limiting groove. A spring 18 is fixedly connected to the side of the I-shaped plate 17 near the center of the protective plate 15. A pressure plate 19 is fixedly connected to the side of the spring 18 away from the I-shaped plate 17.

[0033] It should be noted that during the film stretching process, the reaction force of the spring 18 can drive the pressure plate 19 to move when the film thickness decreases, and then allow the pressure plate 19 to continue to press the film.

[0034] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0035] When the equipment is stretching, the user first places the film on top of the four bottom clamping plates 19, then runs the bidirectional threaded motor 16, causing the two opposing I-shaped plates 17 to move inward, thereby causing the eight clamping plates 19 to clamp the four sides of the film. Then, the drive motor 2 is run, causing the drive assembly 3 to drive the gear 5 to rotate, which in turn causes the gear 5 to drive the moving plate 6 to move outward, thereby causing the clamping plates 19 to exert an outward pulling force on the four sides of the film, thus stretching the four sides of the film. When the film thickness decreases, the reaction force of the spring 18 can drive the clamping plates 19 to continue to exert pressure on the film, thereby preventing the film from detaching from the equipment.

[0036] When the equipment is packaging, the user first needs to operate the lifting component 8 to bring the stretched film to its lowest position. Then, the item to be packaged is placed on top of the film. Next, the lifting component 8 is moved in the direction of movement, causing the pressure plate 19 to move upward along the four sides of the film. Because the item is in the center of the film, the film is in a concave state at this point. Then, the drive motor 2 is moved in the direction of movement, causing the pressure plate 19 to move inward along the four sides of the film, so that the side of the concave film fits against the side of the item. This allows the film to automatically package the bottom and four sides of the item. Finally, the bidirectional threaded motor 16 is moved in the direction of movement, causing the pressure plate 19 to release the four sides of the film, allowing the user to attach the remaining film to the top of the item.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A film stretching device for packaging, comprising a base plate (1), characterized in that: The substrate (1) has a moving slot, a transmission slot and a device slot arranged sequentially from top to bottom inside. A drive motor (2) is fixedly connected to the bottom of the device slot. A drive assembly (3) is fixedly connected to the output rod of the drive motor (2). There are four moving slots. A rotating rod (4) is installed on the top of each of the four moving slots. A gear (5) is fixedly connected to the outer surface of the rotating rod (4). A moving plate (6) is slidably connected inside the moving slot. A fixed plate (7) is fixedly connected to the side of the moving plate (6) away from the center of the substrate (1). A lifting assembly (8) is fixedly connected to the top of the fixed plate (7). A clamping assembly (9) is fixedly connected to the side of the lifting assembly (8) close to the center of the substrate (1).

2. A film stretching apparatus for packaging according to claim 1, characterized in that: The lifting assembly (8) includes a U-shaped plate (10), an electric telescopic device (11) is fixedly connected to the top of the inner wall of the U-shaped plate (10), the output rod of the electric telescopic device (11) is fixedly connected to a support plate (12), and a fixing rod (13) is fixedly connected to the side of the support plate (12) near the center of the base plate (1).

3. A film stretching apparatus for packaging according to claim 2, characterized in that: The top of the U-shaped plate (10) is fixedly connected to a telescopic rod (14), and the top of the telescopic rod (14) is connected to the bottom of the support plate (12).

4. A film stretching apparatus for packaging according to claim 2, wherein: The clamping assembly (9) includes a protective plate (15), the side of the protective plate (15) away from the center of the base plate (1) is connected to a fixing rod (13), a bidirectional threaded motor (16) is fixedly connected to the top of the protective plate (15), and an I-shaped plate (17) is slidably connected to the top and bottom of the output rod surface of the bidirectional threaded motor (16). A spring (18) is fixedly connected to the side of the I-shaped plate (17) near the center of the protective plate (15), and a pressure plate (19) is fixedly connected to the side of the spring (18) away from the I-shaped plate (17).

5. A film stretching apparatus for packaging according to claim 4, wherein: A limiting rod (20) is fixedly connected to the bottom of the inner cavity of the protective plate (15), and a limiting groove is opened on the top of the I-shaped plate (17). The outer diameter of the limiting rod (20) is adapted to the inner diameter of the limiting groove.

6. A film stretching apparatus for packaging according to claim 1, wherein: A through-wheel groove is provided between the moving groove and the transmission groove, and the partial positions of the rotating rod (4) and the gear (5) pass through the through-wheel groove and are located inside the transmission groove.

7. A film stretching apparatus for packaging according to claim 6, wherein: The drive assembly (3) includes a cylinder, and a ring plate is fixedly connected to the top of the cylinder. A gear groove is provided inside the ring plate, and the gear groove meshes with the outer surface of the gear (5).

8. A film stretching apparatus for packaging according to claim 6, wherein: The center of the movable plate (6) is provided with a hollow groove, and the side wall of the hollow groove is provided with a rack groove, which is in contact with the outer surface of the gear (5).

Images