Elevator door frame protective film winding device

Abstract

An elevator door frame protective film winding device comprises a fixing disc, a film winding disc and a damping rotating shaft. A first notch is formed in the circumference of the fixing disc, the minimum opening width of the first notch is larger than the maximum thickness of an elevator door frame, the film winding disc is rotatably and coaxially arranged on the side portion of the fixing disc, a second notch is formed in the circumference of the film winding disc, and the central angle of the second notch is smaller than that of the first notch. The minimum opening width of the second notch is larger than the maximum thickness of the elevator door frame, and the damping rotating shaft is arranged on the side wall of the film winding disc, configured to be pulled to rotate and used for installing a protective film. The film winding disc can rotate circumferentially relative to the fixed disc so as to wrap the elevator door frame in a covering mode, the film winding disc and the fixed disc are both provided with the notches with certain angles, when the notches coincide, the elevator door frame can smoothly penetrate through the notches, and the limitation of the overall closed structure of the door frame is solved.

Description

Technical Field

[0001] This utility model belongs to the field of coating technology, specifically referring to an elevator gantry protective film wrapping device. Background Technology

[0002] Elevator gantry frames require wrapping during transportation to prevent damage from impacts. While the overall shape of the elevator gantry frame is approximately rectangular, the addition of accessories in certain areas causes localized fluctuations in its width or height. These dimensional variations complicate the wrapping process and hinder automated positioning operations.

[0003] Furthermore, the fully enclosed structure of the gantry severely restricts the initial entry point for the wrapping operation. Regardless of the gantry's angle, its closed perimeter prevents the packaging material and equipment from finding a suitable entry point into the inner ring. This structural characteristic makes it difficult to smoothly introduce the wrapping material and hinders cyclic winding operations, further increasing the difficulty of automated packaging. Utility Model Content

[0004] In view of the above situation and to overcome the defects of the prior art, this utility model provides an elevator door frame protective film wrapping device, which at least partially solves the above problems.

[0005] The technical solution adopted by this utility model is as follows: The elevator door frame protective film wrapping device proposed by this utility model includes a fixed plate with a first notch on its circumference, and the minimum opening width of the first notch is greater than the maximum thickness of the elevator door frame.

[0006] A film winding disc is rotatably and coaxially disposed on the side of the fixed disc. A second notch is provided on the circumference of the film winding disc. The central angle of the second notch is smaller than the central angle of the first notch. The minimum opening width of the second notch is greater than the maximum thickness of the elevator door frame.

[0007] The damping shaft, located on the side wall of the membrane disc, is configured to rotate under tension and is used to install the protective membrane.

[0008] Furthermore, the fixed disk is provided with transmission wheels at both ends and the middle. Each transmission wheel is linked by a synchronous belt and is driven to rotate. Each transmission wheel is provided with a transmission shaft at its center and a drive wheel at its end. The drive wheel meshes with the edge of the film-winding disk to drive the film-winding disk to rotate.

[0009] Furthermore, the side wall of the drive wheel is provided with an anti-detachment pressure wheel, and the side wall of the anti-detachment pressure wheel is pressed against the side wall of the film-winding disc.

[0010] Furthermore, the fixed plate is provided with a flange, the drive shaft is rotatably mounted on the flange, the drive wheel is located on the side of the flange away from the film-winding disc, and a driven wheel is coaxially fixed to the outer side of one of the drive wheels.

[0011] Furthermore, the elevator door frame protective film wrapping device proposed in this utility model also includes a motor, the output end of which is connected to a drive wheel, and the drive wheel meshes with the driven wheel.

[0012] Furthermore, the fixed plate is provided with an arc groove, and the film winding plate is provided with a positioning boss, which is slidably disposed in the arc groove.

[0013] Furthermore, at least one limiting post is provided on the side wall of the flange, which is used to constrain the running trajectory of the synchronous belt and prevent the synchronous belt from interfering with the elevator gantry.

[0014] The beneficial effects of this utility model are as follows: the film-wrapping disc can rotate circumferentially relative to the fixed disc, thereby covering the elevator gantry with film. Both the film-wrapping disc and the fixed disc have notches at a certain angle. When these notches overlap, the elevator gantry can pass through smoothly, solving the limitation of the overall closed structure of the gantry. The notch angle of the film-wrapping disc is smaller than that of the notch angle of the fixed disc, which can ensure that the film-wrapping disc always slides in contact with the fixed disc and will not separate, so as to facilitate cyclic driving operation. Attached Figure Description

[0015] Figure 1 This is a diagram illustrating the operation of the elevator door frame protective film wrapping device according to an embodiment of this utility model.

[0016] Figure 2 This is a schematic diagram of the structure of the elevator door frame protective film wrapping device according to an embodiment of the present invention;

[0017] Figure 3 This is a schematic diagram of the transmission relationship of the drive wheels;

[0018] Figure 4 An exploded view showing the positional relationship between the film-winding disc and the fixed disc.

[0019] Among them, 1. film winding disc, 2. fixed disc, 3. damping shaft, 4. drive wheel, 5. anti-detachment pressure wheel, 6. transmission wheel, 7. driven wheel, 8. transmission shaft, 9. flange, 10. limit post, 11. driving wheel, 12. motor, 13. arc groove, 14. positioning boss, 15. synchronous belt.

[0020] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof. Detailed Implementation

[0021] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0023] like Figures 1-4 As shown in the figure, an elevator gantry protective film wrapping device proposed in this utility model embodiment includes a fixed plate 2, a film wrapping plate 1 and a damping rotating shaft 3. The fixed plate 2 has a first notch on its circumference. The minimum opening width of the first notch is greater than the maximum thickness of the elevator gantry. During operation, the fixed plate 2 remains fixed, and the elevator gantry is conveyed by a conveyor belt and passes through the first notch of the fixed plate 2.

[0024] The film winding disc 1 is rotatably and coaxially mounted on the side of the fixed disc 2. Driven by external power, the film winding disc 1 rotates repeatedly on the side wall of the fixed disc 2. The circumference of the film winding disc 1 is provided with a second notch. The central angle of the second notch is smaller than that of the first notch. Therefore, when the film winding disc 1 rotates, a section of its body will always be in contact with the fixed disc 2. No matter what angle the film winding disc 1 rotates to, it will not fall off the fixed disc 2. The minimum opening width of the second notch is greater than the maximum thickness of the elevator gantry. Before the winding operation, the second notch of the film winding disc 1 rotates to the position of the first notch, so that the two opening areas overlap, so that the elevator gantry can pass through the opening side of the film winding disc 1 and the fixed disc 2, thus solving the limitation of the overall closed structure of the gantry. After the elevator gantry enters the film winding disc 1 and the fixed disc 2, the film winding disc 1 rotates to facilitate the subsequent winding of the protective film.

[0025] The damping shaft 3 is located on the side wall of the membrane winding disc 1 and is configured to rotate under tension. A protective membrane is installed on the damping shaft 3. When the damping shaft 3 rotates with the membrane winding disc 1, the protective membrane will rotate around the elevator gantry. As the elevator gantry moves horizontally, the protective membrane will gradually wrap around the gantry, thus completing the winding operation. In order to maintain the tension of the protective membrane, the damping shaft 3 will only rotate after being subjected to a certain tension, thereby preventing the damping shaft 3 from reversing. The damping value (i.e., frictional resistance) of the damping shaft 3 is adjustable. This is existing technology and will not be described in detail here.

[0026] In some embodiments, the fixed disk 2 is provided with transmission wheels 6 at both ends and the middle. Each transmission wheel 6 is linked by a synchronous belt 15 and is driven to rotate. Each transmission wheel 6 has a transmission shaft 8 at its center and a drive wheel 4 at its end. The drive wheel 4 meshes with the edge of the film-winding disk 1 to drive the film-winding disk 1 to rotate. Since the central angle of the second notch is smaller than that of the first notch, at least one of the transmission wheels 6 at both ends of the fixed disk 2 will always be engaged with the film-winding disk 1 during the process of driving the film-winding disk 1 to rotate, so that the driving power of the film-winding disk 1 is continuous and uninterrupted. The transmission wheel 6 provided in the middle of the fixed disk 2 can increase the stability of the transmission power.

[0027] In some embodiments, the side wall of the drive wheel 4 is provided with an anti-detachment pressure wheel 5, the side wall of the anti-detachment pressure wheel 5 is pressed against the side wall of the film winding disc 1, the fixed disc 2 is provided with an arc groove 13, and the film winding disc 1 is provided with a positioning boss 14, which is slidably disposed in the arc groove 13. During installation, the positioning boss 14 of the film winding disc 1 is directly pressed into the arc groove 13, which is convenient and quick to install and can also limit the rotation trajectory of the film winding disc 1. The anti-detachment pressure wheel 5 can keep the film winding disc 1 always attached to the fixed disc 2 and prevent the film winding disc 1 from detaching.

[0028] In some embodiments, the elevator gantry protective film wrapping device proposed in this utility model embodiment further includes a motor 12, the output end of the motor 12 is connected to a drive wheel 11, a flange 9 is provided on the fixed disk 2, a transmission shaft 8 is rotatably mounted on the flange 9, and a transmission wheel 6 is located on the side of the flange 9 away from the film wrapping disk 1. A driven wheel 7 is coaxially fixed to the outer side of one of the transmission wheels 6. The drive wheel 11 meshes with the driven wheel 7. The motor 12 drives the driven wheel 7 to rotate through the drive wheel 11. The driven wheel 7 drives the transmission wheel 6, which is coaxially fixed with it, to rotate. The transmission wheel 6 drives other transmission wheels 6 to rotate through the synchronous belt 15, and drives the drive wheel 4, which is coaxial with the transmission wheel 6, to rotate. Finally, the film wrapping disk 1 is rotated to realize the wrapping film operation.

[0029] In some embodiments, at least one limiting post 10 is provided on the side wall of flange 9. The limiting post 10 is used to constrain the running trajectory of synchronous belt 15, so that synchronous belt 15 is in the ring of fixed disk 2, avoiding synchronous belt 15 being in the hollow ring of fixed disk 2, and preventing synchronous belt 15 from interfering with elevator gantry.

[0030] 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.

[0031] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. An elevator door rack guard film winding device, characterized by, include: The fixed plate (2) has a first notch on its circumference, and the minimum opening width of the first notch is greater than the maximum thickness of the elevator door frame. The film winding disc (1) is rotatably and coaxially disposed on the side of the fixed disc (2). A second notch is provided on the circumference of the film winding disc (1). The central angle of the second notch is smaller than the central angle of the first notch. The minimum opening width of the second notch is greater than the maximum thickness of the elevator frame. The damping shaft (3) is located on the side wall of the membrane disk (1) and is configured to rotate under tension for installing the protective membrane.

2. The elevator door rack guard film winding apparatus according to claim 1, characterized by: The fixed disk (2) is provided with transmission wheels (6) at both ends and in the middle. Each transmission wheel (6) is linked by a synchronous belt (15). The transmission wheel (6) is driven to rotate. Each transmission wheel (6) is provided with a transmission shaft (8) at its center. The end of the transmission shaft (8) is provided with a drive wheel (4). The drive wheel (4) meshes with the edge of the winding disk (1) to drive the winding disk (1) to rotate.

3. The elevator door rack guard film winding apparatus according to claim 2, characterized by: The drive wheel (4) has an anti-detachment pressure wheel (5) on its side wall, and the side wall of the anti-detachment pressure wheel (5) is pressed against the side wall of the winding disc (1).

4. The elevator door rack guard film winding apparatus of claim 2, wherein: The fixed disk (2) is provided with a flange (9), the drive shaft (8) is rotatably mounted on the flange (9), the drive wheel (6) is located on the side of the flange (9) away from the film-wrapping disk (1), and a driven wheel (7) is coaxially fixed on the outer side of one of the drive wheels (6).

5. The elevator door rack guard film winding apparatus according to claim 4, characterized by: It also includes a motor (12), the output end of which is connected to a drive wheel (11), which meshes with the driven wheel (7).

6. The elevator gantry protective film wrapping device according to claim 1, characterized in that: The fixed plate (2) is provided with an arc groove (13), and the film winding plate (1) is provided with a positioning boss (14), which is slidably disposed in the arc groove (13).

7. The elevator door rack guard film winding apparatus of claim 4, wherein: At least one limiting post (10) is provided on the side wall of the flange (9), and the limiting post (10) is used to constrain the running trajectory of the synchronous belt (15).

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