Plastic film wrapping rotating disc capable of adjusting diameter

Abstract

The utility model discloses a diameter-adjustable plastic film coated rotary table, which is characterized in that a rotary table is arranged on a base, a plurality of extension plates capable of sliding along the radial direction are arranged on the periphery of the rotary table, and a screw-slider driving structure arranged in a guide groove is combined, so that the diameter of the rotary table can be synchronously and continuously adjusted; and meanwhile, through a switching device arranged in the rotating disc, meshing of a hexagonal block and a hexagonal groove and the matching relation of a clamping rod and a clamping groove are matched, and automatic switching control over the adjusting state and the rotating state is achieved. When materials are not placed, the rotary table is kept in a static state, and diameter adjustment can be completed safely and conveniently; after the materials are placed, the device is automatically switched into a rotating state, and the rotating disc is driven to complete film wrapping operation. By means of the structure, the operation efficiency is greatly improved, interference in the adjusting and running process is avoided, and good industrial practicability and automation adaptability are achieved.

Description

Technical Field

[0001] This utility model belongs to the field of packaging, specifically, it relates to a plastic film wrapping turntable with adjustable diameter. Background Technology

[0002] Plastic film wrapping turntables are auxiliary devices commonly used in industrial production and logistics packaging. They are primarily used to support, rotate, and position materials during production or packaging, working in conjunction with external automatic or manual wrapping devices to achieve the wrapping operation. These devices are widely used in the food, feed, and chemical industries, especially in feed processing, where they are used to temporarily hold granular or blocky materials and wrap them with plastic film to achieve functions such as sealing, preservation, and moisture protection. To adapt to materials of different sizes, shapes, or loading volumes, the turntable's dimensional adjustability and structural stability are key design elements for this type of equipment.

[0003] In existing technologies, most common plastic film wrapping turntable structures are of a fixed diameter, meaning they use a single, integral disc to support materials. While these structures are simple to manufacture and low in cost, they cannot accommodate materials of varying volumes. To adapt to different diameter requirements, some technical solutions attempt to change the turntable size using replaceable discs, telescopic arm structures, or detachable accessories. However, these methods often suffer from cumbersome operation, low adjustment precision, and inability to quickly switch between modes. Furthermore, most solutions lack effective control over the transition between the turntable's "static adjustment" and "rotation operation" states, leading to potential structural instability or accidental triggering during material placement or wrapping, severely impacting production efficiency and safety.

[0004] In view of this, this utility model is proposed. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a plastic film-coated turntable with adjustable diameter, which solves the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] An adjustable diameter plastic film-coated turntable includes: a base and a transmission mechanism located on one side of the base. The turntable is disposed above the base. Several extension plates are arranged in a ring around the outer wall of the turntable. A guide groove is provided inside the base. Several drive mechanisms that cooperate with the extension plates are disposed inside the guide groove. A slot is provided inside the turntable. A switching device for switching the state of the turntable is disposed inside the slot. A connecting frame is fixedly connected to the outer wall of the base. Channels are provided on both sides of the slot. Locking rods that cooperate with the switching mechanism are elastically connected inside the channels. Several locking grooves that are adapted to the locking rods are provided on the inner wall of the outer wall of the connecting frame.

[0008] Optionally, the transmission mechanism includes a connecting plate located on one side of the base, a mounting box fixedly connected above the connecting plate, a servo motor fixedly connected above the mounting box, a first sprocket fixedly connected to the output end of the servo motor located inside the mounting box, a second sprocket rotatably connected to the shaft at the bottom of the base, and a chain provided between the first sprocket and the second sprocket.

[0009] Optionally, the drive mechanism includes a screw rotatably connected inside the guide groove, and a rectangular rod that slides in the guide groove is fixedly connected to one side of the extension plate. A threaded hole that matches the screw is opened on one side of the rectangular rod.

[0010] Optionally, a first bevel gear is fixedly connected above the second sprocket, and a second bevel gear that meshes with the first bevel gear is fixedly connected to one end of the screw.

[0011] Optionally, the switching structure includes a rod that is elastically connected in the vertical direction of the slot, a hexagonal block that is fixedly connected to the lower end of the rod, and a hexagonal slot that matches the hexagonal block is provided at the shaft center of the first bevel gear.

[0012] Optionally, a frustum structure is provided on the periphery of the outer wall of the rod, and the first end of the locking rod facing the rod contacts the frustum structure. When the locking rod is inserted into the connecting frame, the locking rod contacts the frustum structure, and after the hexagonal block slides into the hexagonal groove, the locking rod pops out from the groove.

[0013] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art. Of course, any product implementing this utility model does not necessarily need to achieve all of the following advantages at the same time:

[0014] This invention achieves synchronous and continuous adjustment of the turntable diameter by setting a turntable on the base and having several radially sliding extension plates on the outer circumference of the turntable, combined with a screw-slider drive structure in the guide groove. Simultaneously, a switching device inside the turntable, along with the engagement of hexagonal blocks and hexagonal slots and the cooperation of a locking rod and locking slot, enables automatic switching between "adjustment state" and "rotation state." When no material is placed, the turntable remains stationary, facilitating safe diameter adjustment; after material is placed, the device automatically switches to rotation state, driving the turntable to complete the coating operation. This structure significantly improves operational efficiency, avoids interference during adjustment and operation, and has excellent industrial practicality and automation adaptability.

[0015] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0016] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0017] In the picture:

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure above the turntable;

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure beneath the turntable;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the turntable;

[0021] Figure 4 for Figure 3 Schematic diagram of the structure at point A in the middle;

[0022] Figure 5 for Figure 3 Schematic diagram of the structure at point B.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Base; 2. Turntable; 3. Extension plate; 4. Guide groove; 5. Groove; 6. Connecting frame; 7. Locking rod; 8. Connecting plate; 9. Servo motor; 10. First sprocket; 11. Second sprocket; 12. Chain; 13. Screw; 14. Rectangular rod; 15. First bevel gear; 16. Second bevel gear; 17. Rod body; 18. Hexagonal block; 19. Frustum structure.

[0025] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings.

[0027] Please see Figure 1-5 As shown, this embodiment provides an adjustable diameter plastic film-wrapped turntable, including a base 1 and a transmission mechanism located on one side of the base 1. A turntable 2 is arranged above the base 1. Several extension plates 3 are arranged in a ring around the outer wall of the turntable 2. A guide groove 4 is opened inside the base 1. Several driving mechanisms that cooperate with the extension plates 3 are arranged inside the guide groove 4. A slot 5 is opened inside the turntable 2. A switching device for switching the state of the turntable 2 is arranged inside the slot 5. A connecting frame 6 is fixedly connected to the outer wall of the base 1. A channel is opened on both sides of the slot 5. A locking rod 7 that cooperates with the switching structure is elastically connected inside the channel. Several locking grooves that are adapted to the locking rod 7 are opened on the inner wall of the outer wall of the connecting frame 6.

[0028] This invention achieves synchronous and continuous adjustment of the diameter of the turntable 2 by setting a turntable 2 on the base 1 and several radially sliding extension plates 3 on the outer periphery of the turntable 2, combined with the screw 13-slider drive structure set in the guide groove 4. Simultaneously, through a switching device inside the turntable 2, and in conjunction with the engagement of the hexagonal block 18 and the hexagonal groove, and the engagement of the locking rod 7-slot, automatic switching control between "adjustment state" and "rotation state" is achieved. When no material is placed, the turntable 2 remains stationary, facilitating safe diameter adjustment; after material is placed, the device automatically switches to rotation state, driving the turntable 2 to complete the coating operation. This structure significantly improves operational efficiency, avoids interference during adjustment and operation, and has good industrial practicality and automation adaptability.

[0029] In this embodiment, the transmission mechanism includes a connecting plate 8 located on one side of the base 1. A mounting box is fixedly connected to the top of the connecting plate 8, and a servo motor 9 is fixedly connected to the top of the mounting box. A first sprocket 10 located inside the mounting box is fixedly connected to the output end of the servo motor 9. A second sprocket 11 is rotatably connected to the shaft at the bottom of the base 1. A chain 12 is arranged between the first sprocket 10 and the second sprocket 11. The transmission effect can be achieved through the arrangement between the first sprocket 10 and the second sprocket 11, and the mounting box serves to fix the servo motor 9.

[0030] In this embodiment, the driving mechanism includes a screw 13 rotatably connected inside the guide groove 4, and a rectangular rod 14 that slides within the guide groove 4 is fixedly connected to one side of the extension plate 3. A threaded hole adapted to the screw 13 is provided on one side of the rectangular rod 14. The rectangular rod 14 fits tightly against the side wall of the guide, and this mechanism prevents the rectangular rod 14 from rotating along with the screw 13.

[0031] In this embodiment, a first bevel gear 15 is fixedly connected above the second sprocket 11, and a second bevel gear 16 that meshes with the first bevel gear 15 is fixedly connected to one end of the screw 13. The diameter of the first bevel gear 15 is larger than that of the second bevel gear 16. Through this structure, the first bevel gear 15 can drive several second bevel gears 16 to rotate synchronously, thereby completing the adjustment of the position of several extension plates.

[0032] In this embodiment, the switching structure includes a rod 17 elastically connected to the vertical direction of the slot 5. A hexagonal block 18 is fixedly connected to the lower end of the rod 17. A hexagonal groove adapted to the hexagonal block 18 is opened at the axis of the first bevel gear 15. An annular groove is opened on the periphery of the slot 5. A connecting ring is fixedly connected to the periphery of the rod 17. A spring sleeved on the periphery of the rod 17 is connected between the connecting ring and the annular groove. Through this mechanism, after the feed is placed on the turntable 2, the rod 17 will be squeezed first, causing the rod 17 to move downward. During the downward movement of the rod 17, the hexagonal block 18 will slide into the hexagonal groove and form a combination relationship with the second bevel gear 16. At this time, when the second sprocket 11 rotates, the turntable 2 will rotate along with it.

[0033] After the hexagonal block 18 slides out of the hexagonal slot, the locking rod 7 will be pressed into the slot by the frustum structure 19. At this time, the locking rod 7 will be connected to the connecting frame 6. During the rotation of the second sprocket 11, the first bevel gear 15 will rotate and drive the screw 13 to rotate through the second bevel gear 16. At this time, the adjustment of the position of the extension plate 3 is completed.

[0034] In this embodiment, a frustum structure 19 is provided on the periphery of the outer wall of the rod 17, and the first end of the locking rod 7 facing the rod 17 contacts the frustum structure 19. When the locking rod 7 is engaged with the connecting frame 6, the locking rod 7 contacts the frustum structure 19, and after the hexagonal block 18 slides into the hexagonal groove, the locking rod 7 pops out from the groove. This structure allows the turntable 2 to remain stationary when no feed is being placed, facilitating the subsequent placement of feed.

[0035] This utility model is not limited to the above-described embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model. Technical aspects, shapes, and structures not described in detail in this utility model are all publicly known technologies.

Claims

1. A plastic film-coated turntable with adjustable diameter, characterized in that, include: The base (1) and the transmission mechanism located on one side of the base (1) are provided. A turntable (2) is provided above the base (1). Several extension plates (3) are arranged in a ring around the outer wall of the turntable (2). A guide groove (4) is provided inside the base (1). Several drive mechanisms that cooperate with the extension plates (3) are provided inside the guide groove (4). A slot (5) is provided inside the turntable (2). A switching device for switching the state of the turntable (2) is provided inside the slot (5). A connecting frame (6) is fixedly connected to the outer wall of the base (1). A channel is provided on both sides of the slot (5). A locking rod (7) that cooperates with the switching structure is elastically connected inside the channel. Several locking slots that are adapted to the locking rod (7) are provided on the inner wall of the outer wall of the connecting frame (6).

2. The adjustable diameter plastic film-coated turntable (2) according to claim 1, characterized in that, The transmission mechanism includes a connecting plate (8) located on one side of the base (1), a mounting box is fixedly connected above the connecting plate (8), a servo motor (9) is fixedly connected above the mounting box, a first sprocket (10) located inside the mounting box is fixedly connected to the output end of the servo motor (9), a second sprocket (11) is rotatably connected at the shaft center at the bottom of the base (1), and a chain (12) is provided between the first sprocket (10) and the second sprocket (11).

3. The adjustable diameter plastic film-coated turntable (2) according to claim 1, characterized in that, The drive mechanism includes a screw (13) rotatably connected inside the guide groove (4), and a rectangular rod (14) that slides in the guide groove (4) is fixedly connected to one side of the extension plate (3). A threaded hole that matches the screw (13) is opened on one side of the rectangular rod (14).

4. The adjustable diameter plastic film-coated turntable (2) according to claim 1, characterized in that, The first bevel gear (15) is fixedly connected above the second sprocket (11), and the second bevel gear (16) that meshes with the first bevel gear (15) is fixedly connected to one end of the screw (13).

5. The adjustable diameter plastic film-coated turntable (2) according to claim 1, characterized in that, The switching structure includes a rod (17) that is elastically connected to the slot (5) in the vertical direction. A hexagonal block (18) is fixedly connected to the lower end of the rod (17). A hexagonal slot that matches the hexagonal block (18) is opened at the shaft center of the first bevel gear (15).

6. The adjustable diameter plastic film-coated turntable (2) according to claim 1, characterized in that, A frustum structure (19) is provided on the periphery of the outer wall of the rod (17), and the first end of the locking rod (7) facing the rod (17) contacts the frustum structure (19). When the locking rod (7) is inserted into the connecting frame (6), the locking rod (7) contacts the frustum structure (19), and after the hexagonal block (18) slides into the hexagonal groove, the locking rod (7) pops out from the groove.

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