A closure device without external anti-rotation post

Abstract

The application discloses a sealing device without external anti-rotation column and relates to the technical field of sealing machines.The sealing device comprises a top plate, a rotary sealing assembly and a main transmission shaft, and the top plate is rotationally connected with the rotary sealing assembly;the top plate is connected with a bearing assembly;the bearing assembly comprises a fixed flange seat;the fixed flange seat is connected with a bottom plate;the bottom plate is connected with the top plate through a connecting column assembly;the rotation of the top plate in the circumferential direction is limited through the connecting column assembly;the main transmission shaft is in a hollow structure and is sleeved outside the connecting column assembly;the outer wall of the main transmission shaft is connected with a transmission wheel;the upper end of the transmission wheel is transmissionally connected with the rotary sealing assembly and is used for driving the rotary sealing assembly to rotate.The rotation of the top plate in the circumferential direction is limited through the connecting column assembly between the bottom plate and the top plate;the main transmission shaft is sleeved outside the connecting column assembly;the rotary sealing assembly is driven to rotate;the problem that the existing top plate is fixed through an anti-rotation column, the overall volume is large, and the adaptability and the convenience of debugging and maintenance are poor is solved.

Description

Technical Field

[0001] This invention belongs to the field of sealing machine technology, and in particular relates to a sealing device without external anti-rotation pillars. Background Technology

[0002] In the beverage packaging machinery industry, rotary sealing devices for containers such as PET bottles, glass bottles, and aluminum bottles are mainly composed of a main drive, a rotary assembly, a lifting device, a capping head, and a cap conveyor. During operation, the sealing device drives the rotary assembly to rotate around the center of the main drive through the main drive. Under the meshing transmission of gears, the capping head rotates along the trajectory of the cam, simultaneously revolving around the main drive and rotating on its own axis, thereby completing the cyclical action of gripping, screwing in, and detaching the cap.

[0003] Throughout the entire rotary process, the cam is fixed to the top plate and is a relatively stationary and fixed component during operation to ensure absolute stability in the cap removal, bottle feeding, sealing, and bottle dispensing sections of the entire workflow.

[0004] like Figure 5 As shown, the existing technology on the market uses anti-rotation columns fixed to the machine platform to connect the turret top plate, so that the top plate forms a whole with the fixed machine platform during operation, ensuring the relative fixation of the top plate and preventing the rotating body from moving under the action of various forces.

[0005] However, this structure in the existing technology has certain drawbacks: because the anti-rotation column extends from the platform, it increases the overall size of the equipment, requiring a certain amount of space and affecting its overall adaptability. At the same time, when the rotation pitch circle of the sealing device is small, the overall structural space is small. Due to space constraints, the anti-rotation column occupies the already limited space for debugging, maintenance, and disassembly, thus causing great difficulties for debugging, maintenance, and disassembly. In particular, when customers replace or modify parts, the available space is too small or even non-existent, making the overall debugging and maintenance of the equipment very inconvenient. Summary of the Invention

[0006] The purpose of this invention is to provide a sealing device without external anti-rotation pillars. The circumferential rotation of the top plate is limited by the connecting pillar assembly between the bottom plate and the top plate. The main drive shaft is sleeved on the outside of the connecting pillar assembly to drive the rotation of the rotary sealing assembly. This solves the problem that the existing top plate is fixed by anti-rotation pillars, resulting in a large overall volume and poor adaptability and ease of debugging and maintenance.

[0007] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0008] This invention relates to a sealing device without external anti-rotation pillars, comprising a top plate, a rotary sealing assembly, and a main drive shaft. The top plate is rotatably connected to the rotary sealing assembly. A bearing assembly is connected to the lower surface of the top plate. The bearing assembly includes a fixed flange seat connected to the equipment frame platform. A bottom plate is fixedly connected to the lower surface of the fixed flange seat via a connecting plate. A connecting pillar assembly is connected between the bottom plate and the top plate to limit the circumferential rotation of the top plate. The main drive shaft has a hollow structure and is sleeved on the outside of the connecting pillar assembly. The outer wall of the main drive shaft is rotatably connected to the fixed flange seat. A drive wheel is fixedly connected to the outer wall of the main drive shaft, and its upper end is drively connected to the rotary sealing assembly to drive the rotary sealing assembly to rotate.

[0009] As a preferred embodiment of the present invention, the rotary sealing assembly includes a rotary disk, and a transmission shaft sleeve is fixedly connected to the rotary disk; the transmission shaft sleeve is sleeved on the outside of the main transmission shaft and is connected to the main transmission shaft for transmission, and is used to adjust the axial position between the rotary sealing assembly and the main transmission shaft.

[0010] As a preferred embodiment of the present invention, the transmission shaft sleeve is connected to the main transmission shaft via a first guide key.

[0011] As a preferred embodiment of the present invention, the connecting column assembly includes an inner fixing sleeve fixedly connected to the base plate and an outer fixing sleeve fixedly connected to the top plate.

[0012] As a preferred embodiment of the present invention, the upper end of the inner fixing sleeve is fitted inside the outer fixing sleeve and connected to the outer fixing sleeve by a second guide key; the bottom plate is rotatably connected to an adjusting rod, the upper end of which extends into the inner fixing sleeve and is fixedly connected to a screw; the top plate is fixedly connected to a lifting column extending into the inner fixing sleeve, and the lower end of the lifting column is provided with a threaded hole that mates with the screw, so that the top plate can be moved up and down by rotating the screw, thereby adjusting the vertical position of the rotary sealing assembly.

[0013] As a preferred embodiment of the present invention, the main drive shaft is rotatably connected to the outer wall of the inner fixed sleeve.

[0014] As a preferred embodiment of the present invention, the transmission shaft sleeve is rotatably connected to the outer wall of the outer fixed sleeve.

[0015] As a preferred embodiment of the present invention, the lower end of the adjusting rod passes through the base plate and is threaded with a nut for locking and fixing the adjusting rod.

[0016] In a preferred embodiment of the present invention, the lower end of the adjusting rod is a stepped shaft structure and is rotatably connected to the upper surface of the base plate via a thrust bearing.

[0017] The present invention has the following beneficial effects:

[0018] This invention limits the circumferential rotation of the top plate by using a connecting column assembly between the bottom and top plates. The main drive shaft is sleeved on the outside of the connecting column assembly, enabling the rotary sealing assembly to rotate. This eliminates the need for the top plate to be fixed by anti-rotation columns, effectively reducing the overall size of the sealing machine and improving its adaptability. Furthermore, the absence of anti-rotation columns significantly improves the convenience of installation, debugging, disassembly, and maintenance.

[0019] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of a sealing device without an external anti-rotation column according to the present invention;

[0022] Figure 2 for Figure 1 A partial sectional view;

[0023] Figure 3 A structural schematic diagram of the main drive shaft, fixed flange seat, and inner fixed sleeve;

[0024] Figure 4 for Figure 3 The front view;

[0025] Figure 5 This is a top view of a sealing machine with an anti-rotation column in the prior art;

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 1-Top plate, 2-Rotary sealing assembly, 3-Main drive shaft, 4-Fixed flange seat, 5-Connecting column assembly, 6-Adjusting rod, 101-Lifting column, 102-Threaded hole, 201-Rotary disc, 202-Drive shaft sleeve, 203-First guide key, 301-Drive wheel, 401-Base plate, 501-Inner fixing sleeve, 502-Outer fixing sleeve, 503-Second guide key, 601-Screw, 602-Nut. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0030] Example 1

[0031] Please see Figure 1 As shown, the present invention is a sealing device without external anti-rotation pillars, including a top plate 1, a rotary sealing assembly 2 and a main drive shaft 3, wherein the top plate 1 and the rotary sealing assembly 2 are rotatably connected.

[0032] like Figure 2 and 3 As shown, a load-bearing component is connected to the lower surface of the top plate 1. The load-bearing component includes a fixed flange seat 4 connected to the equipment frame platform. The fixed flange seat 4 is fixed to the equipment frame platform by bolts, so that the whole is supported on the equipment frame platform.

[0033] A base plate 401 is fixedly connected to the lower surface of the fixed flange seat 1 via a connecting plate, leaving a certain gap between the base plate 401 and the fixed flange seat 1. The connecting plate can be fixed to the base plate 401 and the fixed flange seat 1 by bolts or direct welding. A connecting column assembly 5 connects the base plate 401 and the top plate 1, which limits the circumferential rotation of the top plate 1 and supports the top plate 1, thereby reducing the need for anti-rotation columns, reducing the overall size of the equipment, making the installation position of the sealing machine more flexible, and improving its overall adaptability. At the same time, eliminating the installation of anti-rotation columns frees up the operating space above the equipment frame platform, greatly improving the convenience of equipment debugging, maintenance, and disassembly, thus making the product more user-friendly and practical, and greatly solving the problems caused by objective factors for customers.

[0034] The main drive shaft 3 has a hollow structure and is sleeved on the outside of the connecting column assembly 5. The outer wall of the main drive shaft 3 is rotatably connected to the fixed flange seat 4 via bearings. A drive wheel 301 is fixedly connected to the outer wall of the main drive shaft 3. The drive wheel 301 is located between the base plate 401 and the fixed flange seat 1. The drive wheel 301 is a gear or a synchronous belt pulley. The upper end of the main drive shaft 3 is connected to the rotary sealing assembly 2 for driving the rotary sealing assembly 2 to rotate, thereby realizing continuous sealing operations through the rotation of the rotary sealing assembly 2.

[0035] Example 2

[0036] like Figures 2-4 As shown, based on Embodiment 1, the rotary sealing assembly 2 includes a rotary disk 201, and a drive shaft sleeve 202 is fixedly connected to the rotary disk 201. The drive shaft sleeve 202 is sleeved on the outside of the main drive shaft 3 and is connected to the main drive shaft 3 in a transmission manner. Specifically, the drive shaft sleeve 202 and the main drive shaft 3 are connected in a transmission manner through a first guide key 203, so that the drive shaft sleeve 202 and the main drive shaft 3 can move relative to each other in the axial direction, which is used to adjust the axial position between the rotary sealing assembly 2 and the main drive shaft 3.

[0037] Meanwhile, the connecting column assembly 5 includes an inner fixing sleeve 501 fixedly connected to the base plate 401 and an outer fixing sleeve 502 fixedly connected to the top plate 1. The inner fixing sleeve 501 can be welded or bolted to the base plate 401, and the outer fixing sleeve 502 can be bolted to the top plate 1.

[0038] The upper end of the inner fixing sleeve 501 is fitted inside the outer fixing sleeve 502 and connected to the outer fixing sleeve 502 via a second guide key 503, allowing axial movement between the inner fixing sleeve 501 and the outer fixing sleeve 502 while mutually limiting circumferential rotation. The main drive shaft 3 is rotatably connected to the outer wall of the inner fixing sleeve 501 via a bearing. The drive shaft sleeve 202 is rotatably connected to the outer wall of the outer fixing sleeve 502 via a bearing, making the overall rotation more stable and reliable.

[0039] The base plate 401 is rotatably connected to an adjusting rod 6, the upper end of which extends into the inner fixing sleeve 501 and is fixedly connected to a screw 601. The top plate 1 is bolted to a lifting column 101 that extends into the inner fixing sleeve 501, and the lower end of the lifting column 101 is provided with a threaded hole 102 that mates with the screw 601.

[0040] Since the top plate 1 cannot rotate due to the constraint of the bottom plate 401, the inner fixing sleeve 501, and the outer fixing sleeve 502, the screw 601 rotates, and the threaded engagement causes the lifting column 101 to move axially. This allows the lifting column 101 to drive the top plate 1 to move up and down. When the top plate 1 moves up and down, the vertical position of the rotary sealing assembly 2 can be adjusted. The transmission shaft sleeve 202 is connected to the main transmission shaft 3 through the first guide key 203. Even when the axial position changes, circumferential transmission can still be achieved, allowing the rotary sealing assembly 2 to rotate through the main transmission shaft 3. The adjustment of the vertical position of the rotary sealing assembly 2 can flexibly adapt to the elevation of different products, improving the flexibility and adaptability of the sealing machine.

[0041] The lower end of the adjusting rod 6 is a stepped shaft structure and is rotatably connected to the upper surface of the base plate 401 through a thrust bearing. The lower end of the adjusting rod 6 passes through the base plate 401 and is threaded with a nut 602, which is used to lock and fix the adjusting rod 6. After the adjusting rod 6 is adjusted, it is locked by the nut 602 to ensure that the adjusting rod 6 is fixed and that the position of the top plate 1 will not move, thus ensuring the reliability of the equipment operation.

[0042] By supporting the top plate 1 and the rotary sealing assembly 2 on the base plate 401, the lifting structure is placed from the top of the sealing machine to the bottom of the sealing machine, and the base plate 401 is located below the equipment frame platform, which avoids the top-heavy situation of the equipment and helps to improve the stability of the equipment operation.

[0043] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0044] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A sealing device without external anti-rotation pillars, comprising a top plate (1), a rotary sealing assembly (2), and a main drive shaft (3), characterized in that: The top plate (1) is rotatably connected to the rotary sealing assembly (2); The lower surface of the top plate (1) is connected to a bearing assembly, which includes a fixed flange seat (4) connected to the equipment frame platform. The lower surface of the fixed flange seat (4) is fixedly connected to a bottom plate (401) via a connecting plate. A connecting column assembly (5) is connected between the bottom plate (401) and the top plate (1) to limit the rotation of the top plate (1) in the circumferential direction via the connecting column assembly (5). The main drive shaft (3) has a hollow structure and is sleeved on the outside of the connecting column assembly (5). The outer wall of the main drive shaft (3) is rotatably connected to the fixed flange seat (4). A drive wheel (301) is fixedly connected to the outer wall of the main drive shaft (3), and its upper end is connected to the rotary sealing assembly (2) for driving the rotary sealing assembly (2) to rotate. The connecting column assembly (5) includes an inner fixing sleeve (501) fixedly connected to the base plate (401) and an outer fixing sleeve (502) fixedly connected to the top plate (1); the upper end of the inner fixing sleeve (501) is fitted inside the outer fixing sleeve (502) and is connected to the outer fixing sleeve (502) by a second guide key (503); The main drive shaft (3) is rotatably connected to the outer wall of the inner fixed sleeve (501), so that the inner fixed sleeve (501) serves as both an anti-rotation component and a bearing seat for the main drive shaft (3), thereby achieving the functions of anti-rotation and support. The base plate (401) is rotatably connected to an adjusting rod (6), the upper end of which extends into the inner fixing sleeve (501) and is fixedly connected to a screw (601); the top plate (1) is fixedly connected to a lifting column (101) extending into the inner fixing sleeve (501), and the lower end of the lifting column (101) is provided with a threaded hole (102) that cooperates with the screw (601), so that the top plate (1) can be moved up and down by rotating the screw (601) and using the lifting column (101) to adjust the up and down position of the rotary sealing assembly (2).

2. A sealing device without external anti-rotation pillars according to claim 1, characterized in that, The rotary sealing assembly (2) includes a rotary disk (201) with a drive shaft sleeve (202) fixedly connected to it. The drive shaft sleeve (202) is sleeved on the outside of the main drive shaft (3) and is connected to the main drive shaft (3) for adjusting the axial position between the rotary sealing assembly (2) and the main drive shaft (3).

3. A sealing device without external anti-rotation pillars according to claim 2, characterized in that, The transmission shaft sleeve (202) is connected to the main transmission shaft (3) via a first guide key (203).

4. A sealing device without external anti-rotation pillars according to claim 3, characterized in that, The transmission shaft sleeve (202) is rotatably connected to the outer wall of the outer fixed sleeve (502).

5. A sealing device without an external anti-rotation post according to claim 1 or 3, characterized in that, The lower end of the adjusting rod (6) passes through the base plate (401) and is threaded with a nut (602) for locking and fixing the adjusting rod (6) through the nut (602).

6. A sealing device without external anti-rotation pillars according to claim 5, characterized in that, The lower end of the adjusting rod (6) is a stepped shaft structure and is rotatably connected to the upper surface of the base plate (401) through a thrust bearing.

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