Blown film placement apparatus

Abstract

This utility model provides a blown film placement device, relating to the field of blown film technology. It includes a long rod with a lifting assembly on its outer wall. The lifting assembly includes a housing, with a rotating shaft rotatably connected to the inner wall of the housing. A circular gear is fixedly mounted on the outer wall of the rotating shaft, and a ratchet is also fixedly mounted on the outer wall of the rotating shaft. A pawl engages on the outer wall of the ratchet. By setting up the lifting assembly, the height of the placement rack can be easily coarsely adjusted. Anti-slip rubber strips on the outer wall of the rotating shaft increase hand friction, making adjustment easier and more convenient for operators. Simultaneously, the ratchet, pawl, and spring plate cooperate to form a reliable one-way locking mechanism, preventing the placement rack from sliding down due to gravity due to its one-way transmission characteristics. During fine adjustment, with each turn of the ratchet, the pawl engages with the next tooth under the action of the spring plate, achieving precise positioning and locking, preventing external vibrations from causing positional shifts, ensuring stable placement of the blown film, and meeting the precise requirements for different heights.

Description

Technical Field

[0001] This utility model relates to the field of blown film technology, and in particular to a blown film placement device. Background Technology

[0002] During the production of blown film, the blown film needs to be wound into cylindrical blown film rolls and then stored on a placement device to facilitate batch storage and subsequent loading and transportation of the blown film.

[0003] Traditional height adjustment devices for placement racks have many shortcomings: some devices use manual lifting or simple buckle fixing, which is not only laborious to adjust, but also difficult to achieve precise height control, resulting in low efficiency of coarse adjustment; some devices have a transmission structure, but lack a reliable locking mechanism. After the placement rack carries the film, it is easy to slip due to gravity or slight external vibration, causing the film to shift position, affecting the continuity of subsequent operations, and even causing the film to wrinkle or break. Utility Model Content

[0004] The purpose of this utility model is to solve the technical problems mentioned in the background section.

[0005] The present invention adopts the following technical solution: a blown film placement device, including a toothed rod, the outer wall of which is provided with a lifting assembly, the lifting assembly including a housing, the inner wall of which is rotatably connected to a rotating shaft, the outer wall of which is fixedly mounted with a circular gear, the outer wall of which is fixedly mounted with a ratchet, the outer wall of which is engaged with a pawl, the inner wall of which is rotatably connected with a cylinder, the outer wall of which is provided with a spring, and a rotating wheel fixedly mounted on the side of the rotating shaft away from the ratchet.

[0006] Preferably, a placement frame is fixedly installed on one side of the outer casing, a slip ring is fixedly installed on the outer wall of the placement frame, a long rod is slidably connected to the inner wall of the slip ring, and an adjustment component is provided at the bottom of the long rod. Here, the sliding connection structure between the slip ring and the long rod, in conjunction with the sliding connection between the outer casing and the gear, allows the lifting component to smoothly drive the placement frame to adjust its height.

[0007] Preferably, the outer wall of the circular gear meshes with the outer wall of the rack, and the outer wall of the cylinder is fixedly installed with the outer wall of the housing. Here, the meshing design of the circular gear and rack ensures the effectiveness and stability of power transmission, and the fixed installation of the cylinder with the housing provides a reliable support point for the pawl, ensuring the normal operation of the ratchet mechanism.

[0008] Preferably, the outer wall of the pawl contacts the outer wall of the spring, the outer wall of the rotating wheel is fixedly equipped with an anti-slip rubber strip, the outer wall of the ratchet is rotatably connected to the outer wall of the housing, and there are three sets of lifting components, which are evenly distributed on the outer wall of the rack. Here, the contact and engagement between the pawl and the spring enables the ratchet mechanism to achieve a one-way locking function, preventing positional displacement caused by vibration or external force interference during processing; the anti-slip rubber strip increases the friction of the rotating wheel, facilitating manual adjustment by the operator.

[0009] Preferably, the adjustment assembly includes a base, a triangular support block is fixedly mounted on the outer wall of the base, and a threaded rod is fixedly mounted on the top of the base. Here, the adjustment assembly provides the processing device with a fine-tuning height function, the triangular support block design enhances the stability of the base, and the threaded connection between the threaded rod and the slip ring facilitates precise height adjustment.

[0010] Preferably, the bottom of the triangular support block is fitted with a foot pad, and the foot pad is made of rubber. Here, the use of rubber foot pads not only increases the friction between the adjustment component and the ground, but also effectively absorbs vibrations generated during processing, reducing the impact on processing accuracy.

[0011] Preferably, there are two sets of adjustment components, and the bottom of the long rod and the bottom of the toothed rod are threadedly connected to the adjustment components. The height of the threaded rod and the bottom inner wall of the long rod and the toothed rod can be rotatably adjusted by ±50 mm. Here, the two sets of adjustment components are respectively set at the bottom of the long rod and the toothed rod, realizing a dual adjustment function for the overall height of the processing device.

[0012] Preferably, the placement rack is made of high-strength alloy steel, and its surface is coated with an anti-rust coating. Here, the use of high-strength alloy steel and the application of an anti-rust coating ensures that the rack's structural strength can withstand various forces during processing, while also improving its corrosion resistance and extending its service life.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. In this utility model, by setting up a lifting assembly, the height of the placement rack can be easily coarsely adjusted through the meshing transmission of a rotating wheel, rotating shaft, circular gear, and rack. The anti-slip rubber strip on the outer wall of the rotating wheel increases hand friction, making adjustment easier and more convenient for operators. Three evenly distributed lifting assemblies ensure balanced force on the placement rack, guaranteeing smooth operation during lifting and preventing tilting. Simultaneously, the ratchet, pawl, and spring plate work together to form a reliable one-way locking mechanism, preventing the placement rack from sliding down due to gravity due to its one-way transmission characteristics. During fine adjustment, with each turn of the ratchet, the pawl engages with the next tooth under the action of the spring plate, achieving precise positioning and locking, preventing positional displacement caused by external vibrations, ensuring stable placement of the blown film, and meeting the precise requirements for different heights.

[0015] 2. In this invention, the adjustment component effectively addresses the problem of uneven ground. By rotating the base, the threaded rod rotates on the inner wall of the bottom of the long rod and the toothed rod, utilizing the transmission characteristics of the trapezoidal thread to achieve height adjustment within a range of ±50 mm. This ensures that both remain horizontal, fundamentally solving the problem of uneven force on the long rod caused by uneven ground, providing a stable foundation support for the entire device. The triangular support block significantly enhances the stability of the base, making the adjustment component more stable when bearing the weight of the device and external forces. The rubber feet not only increase friction with the ground, preventing the device from sliding during use, but also effectively absorb vibrations generated during operation, reducing the impact of vibrations on the long rod, the toothed rod, and the blown film on the placement rack, further ensuring the overall stability of the device and the reliability of film placement. Attached Figure Description

[0016] Figure 1 This utility model provides a three-dimensional structural schematic diagram of a blown film placement device;

[0017] Figure 2 This utility model provides a schematic diagram of the other side of a blown film placement device;

[0018] Figure 3 This utility model provides a schematic diagram of the lifting component structure of a blown film placement device;

[0019] Figure 4 This utility model provides a schematic diagram of the adjustment component of a blown film placement device;

[0020] Figure 5 This utility model proposes a blown film placement device. Figure 2 Enlarged view of point A in the middle.

[0021] Legend:

[0022] 1. Long rod; 2. Slip ring; 3. Gear rack; 4. Lifting assembly; 5. Adjustment assembly; 6. Placement rack;

[0023] 401. Housing; 402. Shaft; 403. Circular gear; 404. Cylinder; 405. Pawl; 406. Spring; 407. Wheel; 408. Ratchet;

[0024] 501. Base; 502. Triangular support block; 503. Threaded rod. Detailed Implementation

[0025] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0027] Example 1, please refer to Figures 1-5 This utility model provides a technical solution: a blown film placement device, including a rack 3, a lifting assembly 4 on the outer wall of the rack 3, the lifting assembly 4 including a housing 401, a rotating shaft 402 rotatably connected to the inner wall of the housing 401, a circular gear 403 fixedly installed on the outer wall of the rotating shaft 402, a ratchet 408 fixedly installed on the outer wall of the rotating shaft 402, a pawl 405 meshing on the outer wall of the ratchet 408, a cylinder 404 rotatably connected to the inner wall of the pawl 405, a spring 406 provided on the outer wall of the pawl 405, and a rotating wheel 407 fixedly installed on the side of the rotating shaft 402 away from the ratchet 408.

[0028] A placement frame 6 is fixedly installed on one side of the outer casing 401. A slip ring 2 is fixedly installed on the outer wall of the placement frame 6. A long rod 1 is slidably connected to the inner wall of the slip ring 2. An adjustment component 5 is provided at the bottom of the long rod 1. Here, the sliding connection structure between the slip ring 2 and the long rod 1, together with the sliding connection between the outer casing 401 and the toothed rod 3, allows the lifting component 4 to smoothly drive the placement frame 6 to adjust its height, providing a flexible operating space for slow wire EDM and adapting to different processing needs.

[0029] The outer wall of the circular gear 403 meshes with the outer wall of the rack 3, and the outer wall of the cylinder 404 is fixedly installed with the outer wall of the housing 401. Here, the meshing design of the circular gear 403 and the rack 3 ensures the effectiveness and stability of power transmission, and the fixed installation of the cylinder 404 with the housing 401 provides a reliable support point for the pawl 405, ensuring the normal operation of the ratchet 408 mechanism and extending the service life of the device.

[0030] The outer wall of the pawl 405 contacts the outer wall of the spring 406. An anti-slip strip is fixedly installed on the outer wall of the rotating wheel 407. The outer wall of the ratchet 408 is rotatably connected to the outer wall of the housing 401. There are three sets of lifting components 4, evenly distributed on the outer wall of the rack 3. Here, the contact between the pawl 405 and the spring 406 enables the ratchet 408 mechanism to achieve a one-way locking function, preventing positional displacement due to vibration or external interference during processing. The anti-slip strip increases the friction of the rotating wheel 407, facilitating manual adjustment by the operator. The three evenly distributed lifting components 4 ensure more balanced force distribution, improving the overall stability of the device.

[0031] The adjustment assembly 5 includes a base 501, a triangular support block 502 fixedly mounted on the outer wall of the base 501, and a threaded rod 503 fixedly mounted on the top of the base 501. Here, the adjustment assembly 5 is configured to provide a fine-tuning function for the height of the processing device. The design of the triangular support block 502 enhances the stability of the base 501, and the threaded connection between the threaded rod 503 and the slip ring 2 facilitates precise height adjustment.

[0032] The bottom of the triangular support block 502 is equipped with a foot pad made of rubber. Here, the use of rubber foot pads not only increases the friction between the adjustment component 5 and the ground, but also effectively absorbs the vibration generated during processing, reducing the impact on processing accuracy; the trapezoidal thread connection has the characteristics of strong self-locking and high transmission efficiency, ensuring the stability and reliability of the adjustment process.

[0033] There are two sets of adjustment components 5, and the bottom of both the long rod 1 and the toothed rod 3 are threadedly connected to the adjustment components 5. The threaded rod 503 is rotatably adjustable to the inner wall of the bottom of the long rod 1 and the toothed rod 3 within a height range of ±50 mm. Here, the two sets of adjustment components 5 are respectively located at the bottom of the long rod 1 and the toothed rod 3, realizing a dual adjustment function for the overall height of the processing device. The adjustable height range of ±50 mm can meet the actual needs of most slow wire EDM processing, improving the applicability and flexibility of the device.

[0034] The placement rack 6 is made of high-strength alloy steel, and its surface is coated with an anti-rust coating. Here, the use of high-strength alloy steel and the application of an anti-rust coating to the placement rack 6 ensures that its structural strength can withstand various forces during processing, improves its corrosion resistance, extends the service life of the placement rack 6, and reduces the maintenance cost of the device.

[0035] Working principle: When placing the long rod 1 on the ground, uneven ground may cause uneven force on the long rod 1. Since both the long rod 1 and the toothed rod 3 are connected to the bottom of the adjustment components 5, the bases 501 of the two adjustment components 5 can be rotated respectively. When one side of the long rod 1 is lower due to the ground depression, the base 501 of the corresponding adjustment component 5 can be rotated to screw the threaded rod 503 into the inner wall of the bottom of the long rod 1, thereby raising the height of that side of the long rod 1. If one side of the toothed rod 3 is higher due to the ground protrusion, the base 501 of the corresponding adjustment component 5 can be rotated in the opposite direction to screw the threaded rod 503 out from the inner wall of the bottom of the toothed rod 3, thereby lowering the height of that side of the toothed rod 3. Finally, by adjusting the two sets of adjustment components 5 separately, the long rod 1 and the rack 3 can be kept in a horizontal state, ensuring that the entire device is subjected to balanced force, providing a stable and reliable foundation for the subsequent placement of blown film. The triangular support block 502 enhances the stability of the base 501, while the rubber feet increase the friction with the ground and absorb vibrations that may be generated during subsequent operations. Manually rotating the wheel 407 of the lifting component 4 increases hand friction due to the anti-slip rubber strip on the outer wall of the wheel 407, making operation easier. The wheel 407 drives the rotating shaft 402 to rotate, which in turn causes the circular gear 403 and the ratchet 408 to rotate synchronously. The circular gear 403 meshes with the rack 3, causing the outer shell 401 to slide along the rack 3. The outer shell 401 then drives the placement frame 6 fixed thereto and the slip ring 2 connected to the placement frame 6 to slide along the long rod 1, realizing the coarse adjustment of the height of the placement frame 6. During this process, the pawl 405 engages with the ratchet 408 under the action of the spring 406. Due to the unidirectional transmission characteristics of the ratchet 408 and the pawl 405, the placement rack 6 is prevented from sliding down under gravity. When the placement rack 6 approaches the target height, the rotating wheel 407 is slowly rotated for fine adjustment. During the fine adjustment, for each tooth the ratchet 408 rotates, the pawl 405 engages with the next tooth under the action of the spring 406, achieving precise positioning and locking of the placement rack 6. This prevents positional deviation due to external vibrations and other factors, ensuring the stability of the blown film placement and smoothly winding the blown film onto the placement rack 6. Because the placement rack 6 is made of high-strength alloy steel, it has sufficient structural strength to withstand the weight of the blown film and the forces during placement. The anti-rust coating on the surface prevents corrosion in the usage environment, extending its service life. Depending on the size and shape of the film, the structural features of the placement rack 6 can be used to properly fix the film to prevent it from slipping. If it is found that the height still needs to be finely adjusted during the placement of the blown film, the rotating wheel 407 can be rotated again to achieve a fine adjustment of the height of the placement rack 6 through the transmission of the lifting component 4. During the fine adjustment, the ratchet 408 and the pawl 405 can still play a reliable locking role.

[0036] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A device for placing blown film, comprising a toothed bar (3), characterised in that: The outer wall of the rack (3) is provided with a lifting assembly (4), the lifting assembly (4) includes a housing (401), the inner wall of the housing (401) is rotatably connected to a rotating shaft (402), the outer wall of the rotating shaft (402) is fixedly installed with a circular gear (403), the outer wall of the rotating shaft (402) is fixedly installed with a ratchet (408), the outer wall of the ratchet (408) is engaged with a pawl (405), the inner wall of the pawl (405) is rotatably connected with a cylinder (404), the outer wall of the pawl (405) is provided with a spring (406), and a rotating wheel (407) is fixedly installed on the side of the rotating shaft (402) away from the ratchet (408).

2. The blown film placement device according to claim 1, characterized in that: A placement rack (6) is fixedly installed on one side of the outer shell (401). A slip ring (2) is fixedly installed on the outer wall of the placement rack (6). A long rod (1) is slidably connected to the inner wall of the slip ring (2). An adjustment component (5) is provided at the bottom of the long rod (1).

3. A blown film placement apparatus as defined in claim 1, wherein: The outer wall of the circular gear (403) meshes with the outer wall of the rack (3), and the outer wall of the cylinder (404) is fixedly installed with the outer wall of the outer shell (401).

4. A blown film placement apparatus as defined in claim 1, wherein: The outer wall of the pawl (405) is in contact with the outer wall of the spring (406), the outer wall of the rotating wheel (407) is fixedly installed with anti-slip rubber strips, the outer wall of the ratchet (408) is rotatably connected to the outer wall of the outer shell (401), and there are three sets of lifting components (4), and the three sets of lifting components (4) are evenly distributed on the outer wall of the rack (3).

5. A blown film placement apparatus as defined in claim 2, wherein: The adjustment component (5) includes a base (501), a triangular support block (502) is fixedly installed on the outer wall of the base (501), and a threaded rod (503) is fixedly installed on the top of the base (501).

6. A blown film placement apparatus as claimed in claim 5, wherein: The bottom of the triangular support block (502) is fitted with a foot pad, which is made of rubber.

7. A blown film placement apparatus as claimed in claim 6, wherein: The number of adjustment components (5) is two sets, and the bottom of the long rod (1) and the bottom of the toothed rod (3) are threadedly connected to the adjustment components (5). The height of the threaded rod (503) and the bottom inner wall of the long rod (1) and the toothed rod (3) can be adjusted by a factor of ±50 mm.

8. A blown film placement apparatus as defined in claim 2, wherein: The placement rack (6) is made of high-strength alloy steel and its surface is coated with an anti-rust coating.

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