Novel sealing device of sterile cap screwing machine

Abstract

The utility model relates to a novel sealing device of a sterile cap screwing machine, which comprises an anti-rotation plate, a limit rod and a sealing assembly, the anti-rotation plate is sleeved on a cantilever shaft and is connected with the cantilever shaft through a connecting piece, the anti-rotation plate and the cantilever shaft relatively rotate in the radial direction or synchronously move in the axial direction, and the sealing assembly is arranged between the anti-rotation plate and the cantilever shaft. The anti-rotation plate is used for mounting the elastic tube and provided with a guide roller, the limiting rod penetrates through the guide roller, the anti-rotation plate axially moves along the limiting rod through the guide roller, and one end of the limiting rod is connected with the driving plate and synchronously moves along with the driving plate. According to the novel sealing device of the sterile cap screwing machine, the corrugated pipe anti-rotation assembly is directly installed on the lower portion of the cantilever, and the anti-rotation assembly has the function of keeping radial dynamic sealing, so that an outer sleeve of the cantilever can be omitted, and the machining, installation and maintenance difficulty is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of capping machine technology, and in particular to a novel sealing device for an aseptic capping machine. Background Technology

[0002] Currently, the seal used between the cantilever and lower guide sleeve of aseptic capping machines is mostly a bellows seal. However, the cantilever itself rotates during product sealing. Since a seal is needed between the cantilever and lower guide sleeve to ensure a sterile environment in the capping area, and the lower guide sleeve should not rotate while the cantilever rotates, the common practice is to have an outer sleeve directly connected to the cam roller on the outside of the cantilever. This outer sleeve acts as an anti-rotation device, and the bellows connects to the lower guide sleeve. This results in a very long outer sleeve, and coupled with the specific pitch requirements between adjacent cantilever sections in the capping machine, the wall thickness of the outer sleeve cannot be too thick, making manufacturing extremely difficult. Utility Model Content

[0003] In order to solve the problems of the prior art, this utility model provides a novel sealing device for a sterile capping machine that can reduce the difficulty of cantilever processing and installation and maintenance.

[0004] The specific technical solution is as follows: A novel sealing device for an aseptic capping machine includes an anti-rotation plate, a limiting rod, and a sealing assembly. The anti-rotation plate is sleeved on a cantilever shaft and connected to the cantilever shaft via a connector. The anti-rotation plate and the cantilever shaft rotate radially relative to each other or move synchronously in the axial direction. The sealing assembly is disposed between the anti-rotation plate and the cantilever shaft. The anti-rotation plate is used to install an elastic tube. The anti-rotation plate is provided with guide rollers, and the limiting rod passes through the guide rollers. The anti-rotation plate moves axially along the limiting rod via the guide rollers. One end of the limiting rod is connected to an active plate and moves synchronously with the active plate.

[0005] In some embodiments, the anti-rotation plate has a socket hole and a slot, the cantilever shaft passes through the socket hole, and the guide roller is engaged in the slot.

[0006] In some embodiments, the anti-rotation plate has a positioning rod, which is detachably connected to the anti-rotation plate via a locking member, and the positioning rod engages with a slot of a guide roller.

[0007] In some embodiments, the limiting rod is arranged parallel to the cantilever shaft.

[0008] In some embodiments, the lower end of the elastic tube is connected to the lower sealing block, the upper end of the elastic tube is connected to the lower guide sleeve of the cantilever shaft, and the anti-rotation plate is connected to the lower sealing block.

[0009] In some embodiments, the connecting member is a bearing, and the sealing assembly includes a plurality of sealing rings, which are respectively disposed between the bearing and the cantilever shaft, between the cantilever shaft and the anti-rotation plate, and between the lower sealing block and the anti-rotation plate.

[0010] In some embodiments, the lower part of the elastic tube is connected to the lower sealing block by a steel wire clamp, and the upper part of the elastic tube is connected to the lower guide sleeve by a steel wire clamp.

[0011] In some embodiments, the elastic tube shown is a bellows.

[0012] The technical effect of this utility model is that the novel sealing device of the aseptic capping machine adopts a bellows anti-rotation component directly installed on the lower part of the cantilever. The anti-rotation component has the function of maintaining radial dynamic sealing, thereby eliminating the need for an outer sleeve for the cantilever and greatly reducing the difficulty of processing, installation and maintenance. Attached Figure Description

[0013] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the cantilever of an aseptic capping machine according to an embodiment of this utility model.

[0015] Figure 2 This is an embodiment of the present utility model. Figure 1 Enlarged view of section A.

[0016] Figure 3 This is a cross-sectional view of a novel sealing device for an aseptic capping machine according to an embodiment of this utility model. Detailed Implementation

[0017] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0018] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0021] like Figures 1 to 3 As shown, this embodiment of a novel sealing device for an aseptic capping machine includes an anti-rotation plate 1, a limiting rod 2, and a sealing assembly. The anti-rotation plate 1 is sleeved on the cantilever shaft 3 and connected to the cantilever shaft 3 via a connector 4. The anti-rotation plate 1 prevents the lower end of the elastic tube 5 from rotating. The anti-rotation plate 1 and the cantilever shaft 3 can rotate radially relative to each other or move synchronously axially. The sealing assembly is disposed between the anti-rotation plate 1 and the cantilever shaft 3. The anti-rotation plate 1 is used to install the elastic tube 5, and the elastic tube 5 is used for sealing. In this embodiment, a corrugated tube is used. The anti-rotation plate 1 is provided with a guide roller 6, and the limiting rod 2 passes through the guide roller 6. The anti-rotation plate 1 moves axially along the limiting rod 2 via the guide roller 6. One end of the limiting rod 2 is connected to the active plate 7 and moves synchronously with the active plate 7. The limiting rod 2 is fixed to the active plate by screws. In the above technical solution, the active plate 7 drives the cantilever shaft to revolve in a circular motion, and the planetary gear 8 drives the cantilever shaft to rotate on its own axis. An upper cantilever shaft 20 is located above the planetary gear 8 for mounting cam rollers, and a sterile capping head 9 is located at the lower end of the cantilever shaft 3. When sealing the product, the rotation of the cantilever shaft 3 drives the sterile capping head 9 to rotate. The anti-rotation plate 1 and the cantilever shaft 3 rotate radially, thus preventing the bellows from rotating. When the cantilever shaft 3 moves axially, it drives the anti-rotation plate 1 to move axially, which in turn drives the guide roller 6 to move axially. The planar freedom of the guide roller 6 is limited by the limiting rod 2. Through this technical solution, this structure effectively solves the problem of bellows twisting and deformation caused by the sealing between the cantilever shaft 3 and the bellows, which leads to seal failure.

[0022] In this embodiment, the anti-rotation plate 1 has a sleeve hole 11 and a groove 12. The cantilever shaft 3 passes through the sleeve hole 11, and the guide roller 6 is engaged in the groove 12, thereby fixing the guide roller 6 to the anti-rotation plate 1. The anti-rotation plate 1 has a positioning rod 13, which is detachably connected to the anti-rotation plate 1 via a locking member 14. The positioning rod 13 engages with the groove 61 of the guide roller 6, thus facilitating the assembly and disassembly of the guide roller 6. The locking member 14 uses screws, with two screws respectively located at both ends of the positioning rod 13. The limiting rod 2 is arranged parallel to the cantilever shaft 3, enabling the anti-rotation plate 1 to move synchronously along the axis of the limiting rod 2 and the cantilever shaft.

[0023] In this embodiment, the lower end of the elastic tube 5 is connected to the lower sealing block 51, and the upper end of the elastic tube 5 is connected to the lower guide sleeve 31 of the cantilever shaft 3. The anti-rotation plate 1 is connected to the lower sealing block 51. The lower sealing block 51 is used for sealing between the elastic tube 5 and the cantilever shaft 3. At the same time, when the cantilever shaft 3 moves axially, it can drive the elastic tube 5 to extend and retract, maintaining the seal. The connecting member 4 is a bearing, and the sealing assembly includes several sealing rings. The several sealing rings are respectively disposed between the bearing and the cantilever shaft 3, between the cantilever shaft 3 and the anti-rotation plate 1, and between the lower sealing block 51 and the anti-rotation plate 1, sealing the connection positions of each component through the several sealing rings. Specifically, the sealing assembly includes a first sealing ring 71, a second sealing ring 72, and a third sealing ring 73. The first sealing ring 71 is disposed between the connecting member 4 and the cantilever shaft 3, the second sealing ring 72 is disposed between the cantilever shaft 3 and the anti-rotation plate 1, and the third sealing ring 73 is disposed between the lower sealing block 51 and the anti-rotation plate 1. The lower part of the elastic tube 5 is connected to the lower sealing block 51 by a steel wire clamp 81, and the upper part of the elastic tube 5 is connected to the lower guide sleeve 10 by a steel wire clamp 82. The lower guide sleeve 10 is used to guide the axial movement of the cantilever shaft 3 and is fixed by the upper and lower steel wire clamps of the elastic tube 5, thereby sealing the cantilever shaft axially through the elastic tube.

[0024] This embodiment of a novel sealing device for an aseptic capping machine employs a bellows anti-rotation component directly mounted on the lower part of the cantilever. The anti-rotation component maintains a radial dynamic seal, thereby eliminating the need for an outer sleeve for the cantilever and greatly reducing the difficulty of processing, installation, and maintenance.

[0025] The above describes a novel sealing device for an aseptic capping machine according to the present invention. However, the present invention is not limited to the specific embodiments described above. Various modifications or alterations can be made without departing from the scope of the claims. The present invention includes various modifications and alterations within the scope of the claims.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A novel sealing device for an aseptic capping machine, characterized in that, The device includes an anti-rotation plate, a limiting rod, and a sealing assembly. The anti-rotation plate is sleeved on the cantilever shaft and connected to the cantilever shaft via a connector. The anti-rotation plate and the cantilever shaft can rotate radially relative to each other or move synchronously in the axial direction. The sealing assembly is disposed between the anti-rotation plate and the cantilever shaft. The anti-rotation plate is used to install an elastic tube. The anti-rotation plate is provided with guide rollers, and the limiting rod passes through the guide rollers. The anti-rotation plate moves axially along the limiting rod via the guide rollers. One end of the limiting rod is connected to the driving plate and moves synchronously with the driving plate.

2. The novel sealing device for the aseptic capping machine according to claim 1, characterized in that, The anti-rotation plate has a socket and a slot, the cantilever shaft passes through the socket, and the guide roller is engaged in the slot.

3. The novel sealing device for the aseptic capping machine according to claim 2, characterized in that, The anti-rotation plate has a positioning rod, which is detachably connected to the anti-rotation plate through a locking component, and the positioning rod is engaged with the guide roller in a slot.

4. The novel sealing device for the aseptic capping machine according to claim 1, characterized in that, The limiting rod is arranged parallel to the cantilever shaft.

5. The novel sealing device for the aseptic capping machine according to claim 1, characterized in that, The lower end of the elastic tube is connected to the lower sealing block, the upper end of the elastic tube is connected to the lower guide sleeve of the cantilever shaft, and the anti-rotation plate is connected to the lower sealing block.

6. The novel sealing device for the aseptic capping machine according to claim 5, characterized in that, The connecting component is a bearing, and the sealing assembly includes several sealing rings, which are respectively disposed between the bearing and the cantilever shaft, between the cantilever shaft and the anti-rotation plate, and between the lower sealing block and the anti-rotation plate.

7. The novel sealing device for the aseptic capping machine according to claim 6, characterized in that, The lower part of the elastic tube is connected to the lower sealing block by a steel wire clamp, and the upper part of the elastic tube is connected to the lower guide sleeve by a steel wire clamp.

8. The novel sealing device for the aseptic capping machine according to claim 1, characterized in that, The elastic tube shown is a corrugated tube.

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