Cap screwing device

Abstract

The utility model discloses a cap screwing device which comprises an anti-rotation seat, an anti-rotation rod fixedly installed on the anti-rotation seat, a hollow cam fixedly installed at the upper end of the anti-rotation rod, a hollow main shaft further sleeved outside the anti-rotation rod, an installation table board further arranged on a machine frame, a lower bearing seat fixed on the installation table board, a rotating seat fixedly installed on the hollow main shaft, and an upper bearing seat fixedly installed on the rotating seat. A plurality of lifting cap screwing assemblies are uniformly distributed on the circumference of the rotating seat, and are matched with the hollow cam to drive lifting; a central fixed gear is fixedly mounted on the hollow cam, and a planetary gear meshed with the central fixed gear is further arranged on each lifting cap screwing assembly; an outer cover shell is fixed on the rotating seat, the hollow cam, the planetary gear and the central fixed gear are integrally covered by the outer cover shell, a bottle opening shifting wheel and a bottle body protecting wheel are further fixedly mounted on the hollow main shaft, and a bottle opening protecting plate and a bottle body protecting plate are arranged on the mounting table top. The cap screwing device can better prevent lubricating oil from polluting beverage bottles in the cap screwing process.

Description

Technical Field

[0001] The utility model relates to the technical field of beverage filling, in particular to a capping device. Background Art

[0002] In the technical field of beverage filling, a capping device is used to install the lid of a beverage bottle on the mouth of the beverage bottle after the filling of the beverage filling machine is completed. Another aseptic capping mechanism is disclosed in the published text of the patent publication number CN 206985667 U. The aseptic capping mechanism is mainly to ensure asepsis during the capping process. The capping mechanism mainly includes a fixed disk, which is divided into a first cavity above and a second cavity below. The main purpose of the patent publication is to separate the first cavity and the second cavity to ensure that the cavity below the fixed disk is an aseptic environment.

[0003] However, from the basic functions of the capping mechanism, it can be found that first, each capping component needs to revolve, and at the same time, each capping component needs to rotate. In this patent document, the driving component realizes the lifting of the capping component through a bearing and a cam. Therefore, the cam is fixed, and the capping component is installed on the mounting ring driven by the main shaft and revolves with it. Therefore, the water seal component used on the mounting ring to isolate the first cavity and the second cavity actually needs to complete the seal between a rotating part and a static part. This sealing structure is relatively complex and has relatively low reliability, and it is prone to leakage risks during long-term use. Secondly, a bellows is provided on each capping component to further isolate the first cavity and the second cavity to prevent impurities in the first cavity from falling onto the capping head. Then, the bellows is prone to rupture during long-term expansion and contraction. The bellows itself can receive impurities (such as lubricating oil) leaking from above. When the bellows ruptures, the impurities originally collected in the bellows will leak uncontrollably, resulting in pollution. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a capping device that can better avoid the pollution of the beverage bottle by lubricating oil during the capping process.

[0005] To solve the above technical problems, the technical solution of the present utility model is: A capping device, including an anti-rotation seat fixed on a frame, an anti-rotation rod is fixedly installed on the anti-rotation seat, a hollow cam is fixedly installed at the upper end of the anti-rotation rod, a hollow main shaft is also sleeved outside the anti-rotation rod, an upper rotating bearing is arranged between the upper end of the hollow main shaft and the hollow cam, an installation tabletop is also arranged on the frame, a lower bearing seat is fixed on the installation tabletop, the lower end of the hollow main shaft penetrates through the lower bearing seat and a lower rotating bearing is arranged between them, the lower end of the hollow main shaft is in transmission connection with a rotation power device, a rotating seat is fixedly installed on the hollow main shaft, the hollow cam is located above the rotating seat, a plurality of lifting capping components are circumferentially and evenly distributed around the axis of the hollow main shaft on the rotating seat, and the lifting capping components cooperate with the hollow cam to drive lifting; a central fixed gear is fixedly installed on the hollow cam, and a planetary gear engaged with the central fixed gear is also arranged on each lifting capping component; an outer cover shell is fixed on the rotating seat, the outer cover shell encloses the hollow cam, the planetary gear, and the central fixed gear as a whole, a bottle mouth dial and a bottle body guard wheel are also fixedly installed on the hollow main shaft, and a bottle mouth guard plate cooperating with the bottle mouth dial and a bottle body guard plate cooperating with the bottle body guard wheel are arranged on the installation tabletop.

[0006] As a preferred solution, the lifting capping component includes an intermediate bearing seat fixed on the rotating seat, a lifting shaft seat is rotatably installed inside the intermediate bearing seat, a lifting shaft is vertically slidably installed in the lifting shaft seat, a lifting rotation transmission structure that can transmit rotation power and facilitate the lifting of the lifting shaft is arranged between the lifting shaft and the lifting shaft seat, the upper end of the lifting shaft penetrates through the lifting shaft seat and is installed with a force application bearing cooperating with the hollow cam, the planetary gear is fixed at the upper end of the lifting shaft seat, and a first sealing structure is arranged between the lifting shaft and the intermediate bearing seat; a capping head is installed at the lower end of the lifting shaft, and a second sealing structure is arranged between the capping head and the lifting shaft.

[0007] As a preferred solution, the lifting rotation transmission structure includes at least one axially extending axial groove or axial protrusion arranged on the inner hole of the lifting shaft seat, correspondingly, axial protrusions adapted to the axial grooves or axial grooves adapted to the axial protrusions are arranged on the lifting shaft.

[0008] As a preferred solution, the intermediate bearing seat includes an intermediate bearing seat body, the intermediate bearing seat body is detachably fixed at the bottom of the rotating seat, the lifting shaft seat is rotatably installed in the intermediate bearing seat body through a bearing, a bearing end cover is detachably fixed at the lower end of the intermediate bearing seat body, and the first sealing structure is arranged between the bearing end cover and the lifting shaft.

[0009] As a preferred solution, the capping head includes a capping head body detachably fixed to the lower end of the lifting shaft. A pressing cover plate is detachably fixed to the upper end of the capping head body, and the second sealing structure is arranged between the pressing cover plate and the capping head body.

[0010] As a preferred solution, both the first sealing structure and the second sealing structure are oil seals.

[0011] As a preferred solution, the outer housing includes a cylindrical outer barrel and a housing end plate fixed to the upper end of the outer barrel. A connecting flange is provided at the bottom of the outer barrel, and the connecting flange is detachably fixed to the rotating base.

[0012] As a preferred solution, the rotating base includes a rotating plate fixed to the hollow main shaft. A connecting cylinder is fixedly arranged on the outer periphery of the rotating plate, and the connecting cylinder and the connecting flange are fixed by connecting screws.

[0013] As a preferred solution, the connecting cylinder and the rotating plate are fixed by bolts or welding. When the connecting cylinder and the rotating plate are fixed by bolts, a sealing ring is arranged between the connecting cylinder and the rotating plate.

[0014] After adopting the above technical solution, the effects of the present utility model are as follows: Since the anti-rotation rod is fixedly installed on the anti-rotation seat, the upper end of the anti-rotation rod is fixedly installed with a hollow cam, and the outside of the anti-rotation rod is also sleeved with a hollow main shaft. There is an upper rotating bearing between the upper end of the hollow main shaft and the hollow cam. An installation table surface is also provided on the frame, and a lower bearing seat is fixed on the installation table surface. The lower end of the hollow main shaft passes through the lower bearing seat and there is a lower rotating bearing between the two. The lower end of the hollow main shaft is in transmission connection with the rotation power device. A rotating seat is fixedly installed on the hollow main shaft. The hollow cam is located above the rotating seat. A plurality of lifting and screwing cap assemblies are circumferentially and evenly distributed around the axis of the hollow main shaft on the rotating seat. The lifting and screwing cap assemblies cooperate with the hollow cam to drive the lifting; a central fixed gear is fixedly installed on the hollow cam, and a planetary gear meshing with the central fixed gear is also provided on each lifting and screwing cap assembly; an outer housing is fixed on the rotating seat, and the outer housing encloses the hollow cam, the planetary gear, and the central fixed gear as a whole. A bottle mouth dial and a bottle body guard wheel are also fixedly installed on the hollow main shaft. A bottle mouth guard plate cooperating with the bottle mouth dial and a bottle body guard plate cooperating with the bottle body guard wheel are provided on the installation table surface. Therefore, in this screwing cap device, the anti-rotation rod at the center is used to fix the hollow cam to meet the lifting drive of the lifting and screwing cap assemblies. At the same time, the rotatable hollow main shaft can conveniently drive the rotating seat, and then drive a plurality of lifting and screwing cap assemblies to revolve. At the same time, all the components above the rotating seat can be enclosed by the outer housing on the rotating seat. At this time, since the outer housing is fixed on the rotating seat and rotates with the rotating seat, the fixed seal between the rotating seat and the outer housing is very simple, and a simple static seal can be used, and the sealing reliability is higher. The lubricating oil for lubricating the mechanism in the outer housing will not flow out, so the sanitary conditions during screwing the cap are better, and pollution is avoided.

[0015] Also, since the lifting and screwing cap assembly includes an intermediate bearing seat fixed on the rotating seat, a lifting shaft seat is rotatably installed inside the intermediate bearing seat, a lifting shaft is vertically and slidably installed inside the lifting shaft seat, and a lifting and rotating transmission structure capable of transmitting rotational power and facilitating the lifting of the lifting shaft is provided between the lifting shaft and the lifting shaft seat. The upper end of the lifting shaft passes through the lifting shaft seat and is installed with a force-applying bearing cooperating with the hollow cam. The planetary gear is fixed at the upper end of the lifting shaft seat. A first sealing structure is provided between the lifting shaft and the intermediate bearing seat; a screwing cap head is installed at the lower end of the lifting shaft, and a second sealing structure is provided between the screwing cap head and the lifting shaft. Therefore, in this lifting and screwing cap assembly, the upper section of the lifting shaft is sealed with the intermediate bearing seat through the first sealing structure, and the lower section is sealed with the screwing cap head through the second sealing structure, further preventing the lubricating oil in the lifting shaft seat and the intermediate bearing seat from flowing into the screwing cap head along the lifting shaft to contaminate the beverage bottle.

[0016] Also, since the intermediate bearing seat includes an intermediate bearing seat body, the intermediate bearing seat body is detachably fixed to the bottom of the rotating seat, the lifting shaft seat is rotatably installed in the intermediate bearing seat body through a bearing, a bearing end cover is detachably fixed to the lower end of the intermediate bearing seat body, and the first sealing structure is arranged between the bearing end cover and the lifting shaft, so that the first sealing structure can be installed more conveniently. Brief Description of the Drawings

[0017] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0018] Figure 1 is a three-dimensional structure diagram of an embodiment of the present utility model;

[0019] Figure 2 is an axial sectional view of an embodiment of the present utility model;

[0020] Figure 3 is Figure 2 a partially enlarged schematic diagram of

[0021] In the drawings: 1, frame; 2, installation tabletop; 3, anti-rotation rod; 4, hollow cam; 5, hollow main shaft; 6, central fixed gear; 7, rotating seat; 71, connecting cylinder; 72, rotating plate; 8, lifting and rotating cover assembly; 81, intermediate bearing seat; 82, lifting shaft seat; 83, lifting shaft; 84, lifting and rotating transmission structure; 85, force-applying bearing; 86, planetary gear; 87, first sealing structure; 88, second sealing structure; 89, rotating cover head; 891, pressing cover plate; 810, guide sleeve; 811, intermediate bearing seat body; 812, bearing end cover; 813, limit nut; 814, vertical guide rod; 9, outer housing; 91, outer cylinder; 92, connecting flange; 93, housing end plate; 10, upper rotating bearing; 11, lower rotating bearing; 12, lower bearing seat; 13, bottle mouth dial; 14, bottle body guard wheel; 15, bottle mouth guard plate; 16, bottle body guard plate; 17, driving gear. Detailed Description of the Embodiments

[0022] The present utility model will be further described in detail below through specific embodiments.

[0023] Such as Figures 1 to 3As shown in the figure, a cap screwing device includes an anti-rotation seat fixed to a frame 1. An anti-rotation rod 3 is fixedly installed on the anti-rotation seat. A hollow cam 4 is fixedly installed at the upper end of the anti-rotation rod 3. The hollow cam 4 is fixed on the anti-rotation rod 3, so the hollow cam 4 is also stationary. A hollow main shaft 5 is sleeved outside the anti-rotation rod 3. An upper rotating bearing 10 is arranged between the upper end of the hollow main shaft 5 and the hollow cam 4. The number of the upper rotating bearings 10 is two. An installation table 2 is also arranged on the frame 1. A lower bearing seat 12 is fixed on the installation table 2. The lower end of the hollow main shaft 5 penetrates through the lower bearing seat 12 and a lower rotating bearing 11 is arranged between them. The number of the lower rotating bearings 11 is also two, thus providing good support for the hollow main shaft 5.

[0024] The lower end of the hollow main shaft 5 is in transmission connection with a rotation power device. Specifically, the lower end of the hollow main shaft 5 is in transmission with the rotation power device through a driving gear 17. A rotating seat 7 is fixedly installed on the hollow main shaft 5. The hollow cam 4 is located above the rotating seat 7. A plurality of lifting cap screwing assemblies 8 are circumferentially and evenly distributed around the axis of the hollow main shaft 5 on the rotating seat 7. The lifting cap screwing assemblies 8 cooperate with the hollow cam 4 to drive the lifting. A central fixed gear 6 is fixedly installed on the hollow cam 4. A planetary gear 86 meshing with the central fixed gear 6 is also arranged on each lifting cap screwing assembly 8. When the central fixed gear 6 and the planetary gear 86 mesh with each other, it does not prevent the lifting of the hollow main shaft 5. An outer housing 9 is fixed on the rotating seat 7. The outer housing 9 encloses the hollow cam 4, the planetary gear 86 and the central fixed gear 6 as a whole. A bottle mouth dial 13 and a bottle body guard wheel 14 are also fixedly installed on the hollow main shaft 5. A bottle mouth guard plate 15 cooperating with the bottle mouth dial 13 and a bottle body guard plate 16 cooperating with the bottle body guard wheel 14 are arranged on the installation table 2.

[0025] During operation, the beverage bottle filled with liquid is rotated around the axis of the hollow main shaft 5 by the cooperation of the bottle mouth dial 13 and the bottle body dial. The beverage bottle is also assisted and supported by the bottle body guard plate 16 and the bottle mouth guard plate 15. At the same time, the lifting cap screwing assemblies 8 are driven by the hollow cam 4 to descend one by one to make the cap approach the bottle mouth. At the same time, through the mutual cooperation of the central fixed gear 6 and the planetary gear 86, the lifting cap screwing assemblies 8 will rotate around their own axes while revolving, so that the cap is screwed onto the bottle mouth to complete the cap screwing operation.

[0026] The lifting and screwing cap assembly 8 includes an intermediate bearing seat 81 fixed to the rotating seat 7. The intermediate bearing seat 81 is fixed to the rotating seat 7 by bolts. An elevating shaft seat 82 is rotatably installed inside the intermediate bearing seat 81 through a bearing. An elevating shaft 83 is vertically slidably installed inside the elevating shaft seat 82. A lifting and rotating transmission structure 84 is provided between the elevating shaft 83 and the elevating shaft seat 82 to transmit rotational power and facilitate the lifting of the elevating shaft 83. The upper end of the elevating shaft 83 penetrates through the elevating shaft seat 82 and is installed with a force-applying bearing 85 that cooperates with the hollow cam 4. A planetary gear 86 is fixed to the upper end of the elevating shaft seat 82. A first sealing structure 87 is provided between the elevating shaft 83 and the intermediate bearing seat 81. The lower end of the elevating shaft 83 is installed with a cap screwing head 89. A second sealing structure 88 is provided between the cap screwing head 89 and the elevating shaft 83.

[0027] Among them, the lifting and rotating transmission structure 84 includes at least one axially extending axial groove or axial protrusion provided on the inner hole of the elevating shaft seat 82. Correspondingly, axial protrusions adapted to the axial grooves or axial grooves adapted to the axial protrusions are provided on the elevating shaft 83. As Figure 3 shown, a plurality of axially penetrating axial grooves are provided on the inner hole of the elevating shaft seat 82. Correspondingly, a plurality of axial protrusions are provided on the elevating shaft 83 to form a spline structure, so that the elevating shaft 83 can rotate together with the elevating shaft seat 82 and can also axially slide.

[0028] The intermediate bearing seat 81 includes an intermediate bearing seat body 811. The intermediate bearing seat body 811 is detachably fixed to the bottom of the rotating seat 7. The elevating shaft seat 82 is rotatably installed inside the intermediate bearing seat body 811 through a bearing. A bearing end cover 812 is detachably fixed to the lower end of the intermediate bearing seat body 811. The first sealing structure 87 is provided between the bearing end cover 812 and the elevating shaft 83.

[0029] The cap screwing head 89 includes a cap screwing head 89 body detachably fixed to the lower end of the elevating shaft 83. A pressing cover plate 891 is detachably fixed to the upper end portion of the cap screwing head 89 body. The second sealing structure 88 is provided between the pressing cover plate 891 and the cap screwing head 89 body. The cap screwing head 89 adopts the current conventional cap screwing head 89.

[0030] Both the first sealing structure 87 and the second sealing structure 88 are oil seals.

[0031] As Figure 3As shown, the outer housing 9 includes a cylindrical outer barrel 91 and a housing end plate 93 fixed to the upper end of the outer barrel 91. A connecting flange 92 is provided at the bottom of the outer barrel 91, and the connecting flange 92 is detachably fixed to the rotating base 7. The rotating base 7 includes a rotating plate 72 fixed to the hollow main shaft 5, and a connecting cylinder 71 is fixed to the outer periphery of the rotating plate 72. The connecting cylinder 71 and the connecting flange 92 are fixed by connecting screws.

[0032] The connecting cylinder 71 and the rotating plate 72 are fixed by bolts or welding. When the connecting cylinder 71 and the rotating plate 72 are fixed by bolts, a sealing ring is provided between the connecting cylinder 71 and the rotating plate 72. When the connecting cylinder 71 and the rotating plate 72 are welded, the connecting flange 92 and the connecting cylinder 71 can be directly fixed by bolts. Due to the presence of the connecting cylinder 71, a closed structure is formed at the bottom of the rotating base 7 as a whole, and even without a sealing structure between the connecting flange 92 and the connecting cylinder 71, it can well prevent the dripping of lubricating oil.

[0033] In this embodiment, a positioning step is provided between the connecting flange 92 and the connecting cylinder 71 to facilitate the accurate docking of the two.

[0034] As Figure 3 shown, a guide sleeve 810 is rotatably installed at the upper end of the hollow main shaft 5 in this embodiment. The upper end of the hollow main shaft 5 limits the axial position of the guide sleeve 810 through a limit nut 813. A horizontal mounting shaft is provided on the guide sleeve 810, and the force-applying bearing 85 is rotatably installed on the horizontal mounting shaft to cooperate with the hollow cam 4. A vertical guide rod 814 is also fixed to the rotating base 7, and a guide hole sleeved on the vertical guide rod 814 is provided on the guide sleeve 810, which can prevent the hollow main shaft 5 from twisting.

[0035] The above-described embodiments are only descriptions of the preferred embodiments of the present invention and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and modifications made to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A capping device, comprising an anti-rotation seat fixed on a frame, characterized in that: An anti-rotation rod is fixedly installed on the anti-rotation seat, and a hollow cam is fixedly installed on the upper end of the anti-rotation rod. A hollow main shaft is also sleeved on the outside of the anti-rotation rod, and an upper rotating bearing is arranged between the upper end of the hollow main shaft and the hollow cam. A mounting table is also arranged on the frame, and a lower bearing seat is fixed on the mounting table. The lower end of the hollow main shaft passes through the lower bearing seat and a lower rotating bearing is arranged between the two. The lower end of the hollow main shaft is transmission-connected with a rotating power device, and a rotating seat is fixedly installed on the hollow main shaft. The hollow cam is located above the rotating seat, and the rotating seat revolves around A number of lifting and screwing cap components are evenly distributed on the circumference of the axis of the hollow main shaft, and the lifting and screwing cap components cooperate with the hollow cam to drive the lifting and lowering; a central fixed gear is fixedly installed on the hollow cam, and each lifting and screwing cap component is also provided with a planetary gear that engages with the central fixed gear; an outer cover shell is fixed on the rotating seat, and the outer cover shell encloses the hollow cam, the planetary gear and the central fixed gear as a whole; a bottle mouth dial wheel and a bottle body guard wheel are also fixedly installed on the hollow main shaft, and a bottle mouth guard plate that cooperates with the bottle mouth dial wheel and a bottle body guard plate that cooperates with the bottle body guard wheel are provided on the mounting table.

2. A capping device according to claim 1, characterized in that: The lifting and rotating cover assembly includes an intermediate bearing seat fixed on the rotating seat, a lifting shaft seat is rotatably installed inside the intermediate bearing seat, a lifting shaft is vertically and slidably installed in the lifting shaft seat, a lifting and rotating transmission structure that can transmit rotational power and facilitate the lifting and lowering of the lifting shaft is passed between the lifting shaft and the lifting shaft seat, the upper end of the lifting shaft passes through the lifting shaft seat and is equipped with a force bearing that cooperates with a hollow cam, the planetary gear is fixed to the upper end of the lifting shaft seat, and a first sealing structure is arranged between the lifting shaft and the intermediate bearing seat; a rotating cover head is installed at the lower end of the lifting shaft, and a second sealing structure is arranged between the rotating cover head and the lifting shaft.

3. A capping device according to claim 2, characterized in that: The lifting and rotating transmission structure includes at least one axially extending axial groove or axial protrusion arranged on the inner hole of the lifting shaft seat. Correspondingly, the lifting shaft is provided with an axial protrusion adapted to the axial groove or an axial groove adapted to the axial protrusion.

4. A capping device according to claim 3, characterized in that: The intermediate bearing seat includes an intermediate bearing seat body, which is detachably fixed to the bottom of the rotating seat. The lifting shaft seat is rotatably installed in the intermediate bearing seat body through a bearing. A bearing end cover is detachably fixed to the lower end of the intermediate bearing seat body, and the first sealing structure is arranged between the bearing end cover and the lifting shaft.

5. A capping device according to claim 2, characterized in that: The capping head comprises a capping head body detachably fixed to the lower end of the lifting shaft, a capping plate detachably fixed to the upper end of the capping head body, and the second sealing structure is arranged between the capping plate and the capping head body.

6. A capping device according to claim 2, characterized in that: The first sealing structure and the second sealing structure are both oil seals.

7. A capping device according to claim 1, characterized in that: The outer casing comprises a cylindrical outer cylinder and a casing end plate fixed to the upper end of the outer cylinder. A connecting flange is arranged at the bottom of the outer cylinder, and the connecting flange is detachably fixed to the rotating seat.

8. A capping device according to claim 7, characterized in that: The rotating seat comprises a rotating plate fixed on the hollow main shaft, a connecting cylinder is arranged and fixed on the outer periphery of the rotating plate, and the connecting cylinder is fixed to the connecting flange via a connecting screw.

9. A capping device according to claim 8, characterized in that: The connecting tube is fixed to the rotating plate by bolts or welding. When the connecting tube is fixed to the rotating plate by bolts, a sealing ring is arranged between the connecting tube and the rotating plate.

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