A two-part external grab seal

Abstract

The utility model discloses a binary outer grab seal head, and the seal head comprises from top to bottom installed gland cylinder, seal cylinder and indexable air chamber, the gland cylinder includes gland cylinder barrel I and gland cylinder barrel II, and the two barrels are provided with gland cylinder partition cover, and the gland cylinder barrel I and the gland cylinder barrel II are respectively embedded with gland air cylinder rod I and gland air cylinder rod II, the upper end of the gland air cylinder rod I is passed out from the upper end cover of the gland cylinder and is provided with vacuum device, the lower end penetrates the gland cylinder partition cover and can contact with the gland air cylinder rod II, the lower end of the gland air cylinder rod II penetrates the lower end cover of the gland cylinder, the lower end of the gland air cylinder rod II is fixed with the central shaft, the gland air cylinder rod I, the gland air cylinder rod II and the central shaft are all sleeved on the central adjusting rod, the lower end of the central adjusting rod is fixed with the gland head, and the middle part of the central adjusting rod and the gland head is provided with the hollow structure that communicates with each other. The utility model discloses the seal head, and the structure design is reasonable, is especially suitable for the packaging of aerosol can, and the structure is simple and low in cost.

Description

Technical Field

[0001] This utility model relates to the field of packaging equipment technology, and to a binary external gripping and sealing head, particularly to a binary external gripping and sealing head that is simple in structure, low in cost, has a good sealing effect, and can meet the inflation requirements. Background Technology

[0002] Spray cans are pressure-resistant containers, typically made of metal (such as tinplate or aluminum) or glass. Their core components include the container, valve system, contents, and propellant. The valve system is often integrated with the container cap; sealing the aerosol can involves sealing both the cap and the container itself. Simultaneously, a propellant (usually pressurized gas) is often injected into the container. Existing sealing devices that meet these requirements suffer from complex structures and excessively high costs.

[0003] Therefore, developing a sealing head that is simple in structure, low in cost, has a good sealing effect, and can meet the inflation requirements is of great practical significance. Utility Model Content

[0004] Due to the aforementioned defects in the existing technology, this utility model provides a sealing head that is simple in structure, low in cost, has a good sealing effect, and can meet the inflation requirements, so as to solve the problem that existing sealing heads that can inflate while sealing cannot achieve a good balance between simple structure and low cost.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A binary external gripper sealing head includes a capping cylinder, a sealing cylinder, and a repositionable air chamber;

[0007] The capping cylinder, sealing cylinder, and indexable air chamber are installed sequentially from top to bottom;

[0008] The capping cylinder includes capping cylinder I and capping cylinder II arranged vertically. An upper capping cylinder cover is installed above capping cylinder I, and a lower capping cylinder cover is installed below capping cylinder II. Multiple tie rods are provided between the lower capping cylinder cover and the upper capping cylinder cover to fix the capping cylinder. A capping cylinder partition cover is installed between capping cylinder I and capping cylinder II. A capping cylinder rod I is embedded inside capping cylinder I. The upper end of capping cylinder rod I protrudes from the upper capping cylinder cover, and its lower end penetrates the capping cylinder partition cover and can contact capping cylinder rod II. A capping cylinder II is embedded with a capping cylinder rod II. The lower end of the capping cylinder rod II penetrates the lower end cover of the capping cylinder. The lower end of the capping cylinder rod II is fixedly connected to the central shaft. The middle of the capping cylinder rod I, the capping cylinder rod II, and the central shaft are all opened with through holes for the central adjusting rod to pass through. The capping cylinder rod I, the capping cylinder rod II, and the central shaft are all fitted on the central adjusting rod. The lower end of the central adjusting rod is fixed with a capping head. The middle of the central adjusting rod and the capping head are opened with a hollow structure that communicates with each other. The top of the central adjusting rod is equipped with a vacuum device.

[0009] The sealing cylinder is installed outside the central shaft. A sealing piston is embedded inside the sealing cylinder and is fitted outside the central shaft. A tightening sleeve fitted on the central shaft is provided on the inner side of the sealing piston. A tightening ring is installed below the tightening sleeve. Sealing claws arranged in a ring are installed on the inner side of the tightening ring. The sealing claws are fixed to the central shaft. A lower end cover of the sealing cylinder is provided below the sealing cylinder and is inserted into the indexable air chamber. The lower end cover of the sealing cylinder is connected to the indexable air chamber through a connecting flange. The indexable air chamber has a through hole on the side away from the sealing cylinder for the bottle to be sealed to pass through, and a lower end cover of the air chamber is installed around the through hole.

[0010] The operational logic of the above binary external sealing verb is as follows:

[0011] (1) Simultaneously drive the capping cylinder rod I in capping cylinder I and the capping cylinder rod II in capping cylinder II to move downward. At this time, the center adjusting rod slides relative to the capping cylinder rod I and the capping cylinder rod II, driving the sealing cylinder and the indexable air chamber to move downward (two strokes downward). At this time, the capping head contacts the cap to be sealed.

[0012] (2) The vacuum device works to remove the air from the hollow structure of the central adjusting rod and the cap head, and uses air pressure to suck up the cap to be sealed.

[0013] (3) Drive the capping cylinder rod II in the capping cylinder II to move upward, that is, suck up the cap to be sealed and move upward for one stroke. At this time, the cap to be sealed is separated from the bottle body to be sealed.

[0014] (4) Inflate the indexable air chamber with gas, and the gas is introduced into the bottle body through the gap between the cap to be sealed and the bottle body to be sealed.

[0015] (5) Drive the capping cylinder rod I in the capping cylinder I to move upward, that is, move downward one stroke, at which time the cap to be sealed is in close contact with the bottle body to be sealed;

[0016] (6) Drive the sealing piston to move downward. The sealing piston drives the tightening bushing and tightening ring to move downward. The tightening ring presses the sealing claw to contract inward. The sealing claw seals the cap to be sealed.

[0017] The dual external gripper sealing head of this utility model has a reasonable structural design. It can achieve two-stroke adjustment by cooperating with the double capping cylinder and the central adjusting rod. With the vacuum device and the rotatable air chamber, it can not only separate the cap to be sealed from the bottle body, but also inflate the bottle body with air. It is particularly suitable for the packaging of aerosol cans. The overall structure is relatively simple, the cost is low and the sealing effect is good, and the application prospects are good.

[0018] As a preferred technical solution:

[0019] As described above, in a binary external sealing head, the upper and lower ends of the sealing cylinder I and sealing cylinder II are respectively provided with an upper air port and a lower air port.

[0020] As described above, in a binary external sealing head, the sealing cylinder has an upper air port and a lower air port at its upper and lower ends, respectively.

[0021] As described above, in a binary external gripper seal, the outer wall of the indexable gas chamber has a gas inlet for facilitating the filling of gas into the bottle to be sealed.

[0022] As described above, in a binary external gripper sealing head, a vertically arranged sealing expansion limiting shaft is fixed to the lower outer wall of the sealing cylinder;

[0023] The outer wall of the lower end cover of the sealing cylinder is provided with an external thread structure, which is threadedly connected to the limit adjusting nut. The sealing expansion limit shaft and the limit adjusting nut cooperate to limit the stroke of the sealing piston, thereby controlling the contraction range of the sealing claw.

[0024] As described above, in a binary external gripper sealing head, a guide rod mounting plate is fixed on the upper outer wall of the sealing cylinder;

[0025] A vertically arranged guide rod is mounted on the guide rod mounting plate. A sensing block is fixed to the side of the guide rod away from the guide rod mounting plate. A guide screw is fixed to the guide rod. The capping cylinder is fixed to the fixed guide rod, and the fixed guide rod has a vertically arranged guide groove that matches the guide screw. The guide screw passes through the guide groove. By using the guide screw and the guide groove on the fixed guide rod, the movement direction of the guide rod can be guided. With the help of the sensing block, precise control of the binary external gripping sealing head can be achieved.

[0026] As described above, a binary external gripper seal is fixed to the equipment by a capping cylinder lower end cap.

[0027] As described above, in a binary external gripper sealing head, the capping cylinder is fixedly connected to a fixing plate, through which other accessories required for the binary external gripper sealing head can be arranged.

[0028] The above technical solution is only one feasible technical solution of this utility model. The protection scope of this utility model is not limited to this. Those skilled in the art can reasonably adjust the specific design according to actual needs.

[0029] Compared with the prior art, the above-mentioned utility model has the following advantages or beneficial effects:

[0030] The dual external gripper sealing head of this utility model has a reasonable structural design. It can achieve two-stroke adjustment by cooperating with the double capping cylinder and the central adjusting rod. With the vacuum device and the rotatable air chamber, it can not only separate the cap to be sealed from the bottle body, but also inflate the bottle body with air. It is particularly suitable for the packaging of aerosol cans. The overall structure is relatively simple, the cost is low and the sealing effect is good, and the application prospects are good. Attached Figure Description

[0031] The present invention, its features, shape, and advantages will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference numerals denote like parts throughout the drawings. The drawings are not drawn to scale; their purpose is to illustrate the gist of the invention.

[0032] Figure 1 This is a three-dimensional structural diagram of the binary external gripper seal of this utility model;

[0033] Figure 2 This is a front view of the binary external gripping seal of this utility model;

[0034] Figure 3 for Figure 2 DD cross-section;

[0035] Among them, 1 is the sealing cylinder, 2 is the center adjusting rod, 3 is the sealing piston, 4 is the lower end cover of the sealing cylinder, 5 is the limit adjusting nut, 6 is the sealing expansion limit shaft, 7 is the gas distribution unit, 8 is the fixed guide rod, 9 is the indexable air chamber, 10 is the lower end cover of the air chamber, 11 is the center shaft, 12 is the tightening ring, 13 is the connecting flange, 14 is the tightening bushing, 15 is the pull rod, 16 is the gland head, 17 is the guide rod mounting plate, and 18 is the gland cylinder barrel I. 19 is the capping cylinder partition cover, 20 is the capping cylinder rod II, 21 is the lower end cover of the capping cylinder, 22 is the capping cylinder barrel I, 23 is the upper end cover of the capping cylinder, 24 is the capping cylinder rod I, 25 is the fixing plate, 26 is the guide rod, 27 is the sensing block, 28 is the vacuum device, 29 is the upper air port of the sealing cylinder, 30 is the lower air port of the sealing cylinder, 31 is the air port of the air chamber, 32 is the bottle body to be sealed, 33 is the cap to be sealed, and 34 is the sealing claw. Detailed Implementation

[0036] The structure of this utility model will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the utility model.

[0037] Example 1

[0038] A binary external sealing mouth, such as Figures 1-3 As shown, it includes a capping cylinder, a sealing cylinder 1, and a repositionable air chamber 9;

[0039] The capping cylinder, sealing cylinder 2, and indexable air chamber 9 are installed sequentially from top to bottom;

[0040] The capping cylinder includes capping cylinder I 22 and capping cylinder II 18 arranged vertically. An upper capping cylinder cover 23 is installed above capping cylinder I 22, and a lower capping cylinder cover 21 is installed below capping cylinder II 18. The binary external gripping seal is fixed to the equipment via the lower capping cylinder cover 21. Multiple tie rods 15 are provided between the lower capping cylinder cover 21 and the upper capping cylinder cover 23 to fix the capping cylinder. A capping cylinder partition cover 19 is installed between capping cylinder I 22 and capping cylinder II 18. Both capping cylinder I 22 and capping cylinder II 18 have upper and lower air ports, respectively. A capping cylinder rod I 24 is embedded within capping cylinder I 22. The upper end of 24 protrudes from the upper cover 21 of the capping cylinder, and its lower end penetrates the capping cylinder partition cover 19 and can contact the capping cylinder rod II 20. The capping cylinder barrel II 18 is embedded with the capping cylinder rod II 20. The lower end of the capping cylinder rod II 20 penetrates the lower cover 21 of the capping cylinder. The lower end of the capping cylinder rod II 20 is fixedly connected to the central shaft 11. The middle of the capping cylinder rod I 24, the capping cylinder rod II 20 and the central shaft 11 are all opened with through holes for the central adjusting rod 2 to pass through. The capping cylinder rod I 24, the capping cylinder rod II 20 and the central shaft 11 are all fitted on the central adjusting rod 2. The lower end of the central adjusting rod 2 is fixed with a capping head 16. The middle of the central adjusting rod 2 and the capping head 16 are opened with interconnected hollow structures. The top of the central adjusting rod 2 is equipped with a vacuum device 28. The outer side of the capping cylinder is fixedly connected with a fixing plate 25.

[0041] A sealing cylinder 1 is installed outside a central shaft 11. The upper and lower ends of the sealing cylinder 1 have an upper air port 29 and a lower air port 30, respectively. A sealing piston 3 is embedded inside the sealing cylinder 1 and is fitted onto the central shaft 11. A tightening sleeve 14, fitted onto the central shaft 11, is located inside the sealing piston 3. A tightening ring 12 is installed below the tightening sleeve 14. A sealing claw 34, arranged in a ring, is installed inside the tightening ring 12 and is fixed to the central shaft 11. A vertically arranged sealing expansion limit shaft 6 is fixed to the lower outer wall of the sealing cylinder 1. An external thread structure is provided on the outer wall of the lower end cover of the sealing cylinder, and it is threadedly connected to a limit adjusting nut 5 through the external thread structure. A vertically arranged sealing expansion limit shaft 6 is fixed to the upper outer wall of the sealing cylinder 1. A guide rod mounting plate 17 is fixed, and a vertically arranged guide rod 26 is installed on the guide rod mounting plate 17. A sensing block 27 is fixed on the side of the guide rod 26 away from the guide rod mounting plate 17. A guide screw is fixed on the guide rod 26. The capping cylinder is fixed to the fixed guide rod 8, and the fixed guide rod 8 has a guide groove that matches the guide screw and is arranged vertically. The guide screw passes through the guide groove. The lower end cover 4 of the sealing cylinder 1 is provided below and inserted into the indexable air chamber 9. The lower end cover 4 of the sealing cylinder is connected to the indexable air chamber 9 through the connecting flange 13. The indexable air chamber 9 has a through hole on the side away from the sealing cylinder 1 for the bottle body 32 to be sealed to pass through, and an air chamber lower end cover 10 is installed around the through hole. An air chamber port 31 is opened on the outer wall of the indexable air chamber 9.

[0042] The operational logic of the above binary external sealing statement is as follows:

[0043] (1) Simultaneously drive the capping cylinder rod I 24 in capping cylinder I 22 and the capping cylinder rod II 20 in capping cylinder II 18 to move downward. At this time, the center adjusting rod 2 slides relative to the capping cylinder rod I 24 and the capping cylinder rod II 18, driving the sealing cylinder 1 and the indexable air chamber 9 to move downward (two strokes downward). At this time, the capping head 16 contacts the cap to be sealed 33.

[0044] (2) The vacuum device 28 operates, removing the air from the hollow structure of the central adjusting rod 2 and the pressure head 16, and using air pressure to suck up the cap 33 to be sealed.

[0045] (3) Drive the capping cylinder rod II 20 in the capping cylinder II 18 to move upward, that is, suck up the cap to be sealed 33 and move upward for one stroke. At this time, the cap to be sealed 33 is disengaged from the bottle body 32 to be sealed.

[0046] (4) Inflate the repositionable gas chamber 9 with gas, and the gas is filled into the bottle body 32 through the gap between the cap 33 to be sealed and the bottle body 32 to be sealed;

[0047] (5) Drive the capping cylinder rod I 24 in the capping cylinder I 22 to move upward, that is, move downward one stroke. At this time, the cap to be sealed 33 is in close contact with the bottle body 32 to be sealed.

[0048] (6) Drive the sealing piston 3 to move downward. The sealing piston 3 drives the tightening bushing 14 and the tightening ring 12 to move downward. The tightening ring 12 presses the sealing claw 34 to contract inward. The sealing claw 34 seals the cover 33 to be sealed.

[0049] In summary, this application provides a binary external gripper sealing head with a reasonable structural design. It can achieve two-stroke adjustment by cooperating with a double capping cylinder and a central adjusting rod. With the help of a vacuum device and a rotatable air chamber, it can not only separate the cap to be sealed from the bottle body, but also inflate the bottle body with gas. It is particularly suitable for the packaging of aerosol cans. The overall structure is relatively simple, the cost is low, and the sealing effect is good, with good application prospects.

[0050] Those skilled in the art should understand that variations can be implemented by combining existing technology with the above embodiments, which will not be elaborated here. Such variations do not affect the substantive content of this utility model, and will not be elaborated here.

[0051] The preferred embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above. Devices and structures not described in detail herein should be understood as being implemented in a conventional manner within the art. Any person skilled in the art can make many possible variations and modifications to the technical solutions of this utility model using the disclosed methods and techniques, or modify them into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of this utility model. This does not affect the essential content of this utility model. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the content of the technical solution of this utility model, still fall within the protection scope of the technical solution of this utility model.

Claims

1. A binary external gripping seal, characterized in that: Includes a capping cylinder, a sealing cylinder, and a indexable air chamber; The capping cylinder, sealing cylinder, and indexable air chamber are installed sequentially from top to bottom; The capping cylinder includes capping cylinder I and capping cylinder II arranged vertically. An upper capping cylinder cover is installed above capping cylinder I, and a lower capping cylinder cover is installed below capping cylinder II. Multiple tie rods are provided between the lower capping cylinder cover and the upper capping cylinder cover to fix the capping cylinder. A capping cylinder partition cover is installed between capping cylinder I and capping cylinder II. A capping cylinder rod I is embedded inside capping cylinder I. The upper end of capping cylinder rod I protrudes from the upper capping cylinder cover, and its lower end penetrates the capping cylinder partition cover and can contact capping cylinder rod II. A capping cylinder II is embedded with a capping cylinder rod II. The lower end of the capping cylinder rod II penetrates the lower end cover of the capping cylinder. The lower end of the capping cylinder rod II is fixedly connected to the central shaft. The middle of the capping cylinder rod I, the capping cylinder rod II, and the central shaft are all opened with through holes for the central adjusting rod to pass through. The capping cylinder rod I, the capping cylinder rod II, and the central shaft are all fitted on the central adjusting rod. The lower end of the central adjusting rod is fixed with a capping head. The middle of the central adjusting rod and the capping head are opened with a hollow structure that communicates with each other. The top of the central adjusting rod is equipped with a vacuum device. The sealing cylinder is installed outside the central shaft. A sealing piston is embedded inside the sealing cylinder and is fitted outside the central shaft. A tightening sleeve fitted on the central shaft is provided on the inner side of the sealing piston. A tightening ring is installed below the tightening sleeve. Sealing claws arranged in a ring are installed on the inner side of the tightening ring. The sealing claws are fixed to the central shaft. A lower end cover of the sealing cylinder is provided below the sealing cylinder and is inserted into the indexable air chamber. The lower end cover of the sealing cylinder is connected to the indexable air chamber through a connecting flange. The indexable air chamber has a through hole on the side away from the sealing cylinder for the bottle to be sealed to pass through, and a lower end cover of the air chamber is installed around the through hole.

2. The binary external gripping seal mouth according to claim 1, characterized in that, Both the upper and lower ends of the capping cylinder I and capping cylinder II are respectively provided with an upper air port and a lower air port.

3. The binary external gripping seal mouth according to claim 1, characterized in that, The sealing cylinder has an upper air inlet and a lower air inlet at its upper and lower ends, respectively.

4. The binary external gripping seal mouth according to claim 1, characterized in that, The outer wall of the repositionable air chamber has an air inlet.

5. A binary external gripping seal mouth according to claim 1, characterized in that, The lower outer wall of the sealing cylinder is fixed with a vertically arranged sealing expansion limit shaft; The outer wall of the lower end cover of the sealing cylinder is provided with an external thread structure, which is threadedly connected to the limit adjustment nut through the external thread structure.

6. A binary external gripping seal mouth according to claim 1, characterized in that, A guide rod mounting plate is fixed on the upper outer wall of the sealing cylinder; A vertically arranged guide rod is installed on the guide rod mounting plate. A sensing block is fixed on the side of the guide rod away from the guide rod mounting plate. A guide screw is fixed on the guide rod. The pressure cap cylinder is fixed to the fixed guide rod, and a guide groove matching the guide screw and arranged vertically is opened on the fixed guide rod. The guide screw passes through the guide groove.

7. A binary external gripping seal mouth according to claim 1, characterized in that, The binary external gripper is fixed to the equipment by the lower end cap of the capping cylinder.

8. A binary external gripping seal mouth according to claim 1, characterized in that, The gland cylinder is fixedly connected to the fixing plate.

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