CN219859921U - Double-gas-path built-in cylinder type mechanical expansion shaft - Google Patents
Double-gas-path built-in cylinder type mechanical expansion shaft Download PDFInfo
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- CN219859921U CN219859921U CN202320924484.3U CN202320924484U CN219859921U CN 219859921 U CN219859921 U CN 219859921U CN 202320924484 U CN202320924484 U CN 202320924484U CN 219859921 U CN219859921 U CN 219859921U
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- piston rod
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- piston
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- 238000009423 ventilation Methods 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 51
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 239000000428 dust Substances 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 4
- 230000009977 dual effect Effects 0.000 claims 7
- 239000000463 material Substances 0.000 description 8
- 230000007547 defect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses a double-gas-path built-in cylinder type mechanical expansion shaft, which comprises an air expansion main body, an expansion mechanism and a ventilation mechanism; a movable cavity is arranged in the inflatable main body; the side surface of the inflatable main body is provided with an inflation port communicated with the movable cavity; the expansion mechanism comprises an expansion block, an expansion sliding block, a piston rod and a piston; one side of the expansion block is transversely arranged in the expansion opening in a sliding way; the expansion sliding block is movably arranged in the movable cavity; wedge grooves are formed in the side faces of the expansion sliding blocks; one side of the expansion block is arranged in the wedge-shaped groove in a sliding way; the piston rod is arranged at the bottom of the expansion sliding block; the bottom of the piston rod is provided with a first air hole; the piston is arranged on the side surface of the piston rod and is arranged on the inner wall of the movable cavity in a sliding manner; the ventilation mechanism comprises a rotating shaft, a rotary joint and a first air pipe; the rotating shaft is arranged at the top of the inflatable main body; the rotary joint is arranged at the top of the rotating shaft; the first air pipe is arranged in the rotating shaft and the expansion sliding block, and two ends of the first air pipe are respectively connected with the rotary joint and the first air hole.
Description
Technical Field
The utility model belongs to the technical field of mechanical expansion shafts, and particularly relates to a double-gas-path built-in cylinder type mechanical expansion shaft.
Background
The inflatable shaft is mainly used in the film or coiled material industry, is arranged on mechanical equipment such as a splitting machine, a winding machine and the like, and after being assembled, the outer diameter of the inflatable shaft is inflated through structures such as an air bag or a machine and the like, so that the inner hole of an expanded material is reached, and then the coiled material can be subjected to various processing purposes such as splitting or winding.
There are two general structures of the current mainstream:
first kind gasbag formula inflatable shaft: a closed rubber elastic air bag is arranged in the expansion shaft hole, and air is blown to expand the air bag to drive an expansion piece on the air bag to expand and tightly expand an inner hole of the coiled material. The defects of the product are as follows: the expansion is carried out by gas, and the structure after expansion has certain elasticity, and has the following three defects:
1. when the equipment is operated or stopped, a certain amount of shaking exists, and unstable processing phenomenon can be caused in the high-precision use situation;
2. the concentricity of the coiled material after the expansion is poor, and the use requirement of high concentricity cannot be met;
3. the expansion force is relatively small due to the limitation of the gas pressure and the installation position of the air bag.
The second kind of external cylinder type mechanical expansion shaft: a mechanical expansion block with taper is arranged in a hole of the expansion shaft, the expansion block is linked with the pull rod, and the pull rod and the expansion block are driven to expand or reduce the outer diameter of the expansion shaft by controlling the front-back movement of an external cylinder. Although this structure solves three drawbacks of the first balloon type expansion shaft, it has the following drawbacks:
the cylinder structure and the pull rod structure are added, so that the whole structure is huge, other matched accessories are more, the installation is inconvenient, and the manufacturing cost is high.
Disclosure of Invention
The utility model provides a double-gas-path built-in cylinder type mechanical expansion shaft for solving the technical problems.
The utility model adopts the following solution scheme for realizing the technical effects:
a double-gas-path built-in cylinder type mechanical expansion shaft comprises an air expansion main body, an expansion mechanism and a ventilation mechanism; a movable cavity is arranged in the inflatable main body; the side surface of the inflatable main body is provided with an inflation port communicated with the movable cavity; the expanding mechanism comprises an expanding block, an expanding sliding block, a piston rod and a piston; one side of the expansion block is transversely arranged in the expansion opening in a sliding manner; the other side of the expansion block is provided with a wedge surface which gradually inclines inwards from top to bottom; the expansion sliding block is movably arranged in the movable cavity; the side surface of the expansion sliding block is provided with a wedge groove corresponding to the wedge surface; the side of the expansion block wedge surface is arranged in the wedge groove in a sliding manner; the piston rod is arranged at the bottom of the expanding slide block; the bottom of the piston rod is provided with a first air hole; the piston is arranged on the side surface of the piston rod, and the outer side of the piston is arranged on the inner wall of the movable cavity in a sliding manner, so that the bottom of the inflatable main body, the inner wall of the movable cavity, the piston rod and the bottom of the piston are sealed and enclosed to form a first sealing cavity communicated with the first air hole; the ventilation mechanism comprises a rotating shaft, a rotary joint and a first air pipe; the rotating shaft is arranged at the top of the inflatable main body; the rotary joint is arranged at the top of the rotating shaft; the top end of the first air pipe is communicated with the rotary joint; the bottom end of the first air pipe passes through the rotating shaft and the expansion sliding block and is arranged at the top of the piston rod; the first air pipe is communicated with the first air hole.
Preferably, the bottom of the inflatable body is provided with a first sealing plug; a first sealing ring is arranged between the top of the first sealing plug and the inner wall of the first sealing cavity.
Preferably, the outer side of the inflatable main body is provided with a plurality of guide wheels in a rolling way at equal intervals up and down.
Preferably, the outer side of the expansion block is provided with an anti-slip net block.
Preferably, a second sealing ring and a guide ring are arranged between the outer side of the piston and the inner wall of the movable cavity.
Preferably, a reset mechanism is also arranged; the reset mechanism comprises a second sealing plug and a second air pipe; the second sealing plug is arranged on the outer side of the piston rod, and a second sealing cavity is formed between the second sealing plug and the inner walls of the piston, the piston rod and the movable cavity; the side surface of the piston rod is provided with a second air hole communicated with the second sealing cavity; the top end of the second air pipe is communicated with the rotary joint; the bottom end of the second air pipe passes through the rotating shaft and the expansion sliding block and is arranged at the top of the piston rod; the second air pipe is communicated with the second air hole.
Preferably, a third sealing ring is arranged between the second sealing plug and the inner wall of the movable cavity; and a dust sealing piece and a guide copper sleeve are arranged between the second sealing plug and the piston rod.
Preferably, a limiting groove is formed in the outer side of the expansion block; the expanding mechanism further comprises a limiting plate and a spring; two ends of the limiting plate are arranged on the outer side of the inflatable main body, and the limiting plate transversely penetrates through the limiting groove; the spring is arranged between the expansion blocks and the limiting plates.
The beneficial effects of the utility model are as follows: compared with an air bag type expansion shaft, the mounting mode of the air bag type expansion shaft is reserved, and the defects of small expansion force, shutdown shaking and poor precision of the air bag type expansion shaft are avoided; compared with an external cylinder type mechanical expansion shaft, the advantages of high expansion precision and large expansion force are reserved, and a complex cylinder mounting mechanism is omitted.
Drawings
FIG. 1 is a schematic illustration of a mechanical expander disclosed in an embodiment of the present utility model;
FIG. 2 is a schematic illustration of a mechanical expansion shaft de-ballooning body according to an embodiment of the present utility model;
FIG. 3 is a schematic view of an expanding slider according to an embodiment of the present utility model;
FIG. 4 is a schematic cross-sectional view of a mechanical expander disclosed in an embodiment of this utility model;
fig. 5 is a schematic cross-sectional view of the mechanical expansion shaft of fig. 4 rotated 90 degrees counterclockwise.
Identification description: the novel inflatable air cushion comprises a 1-inflatable main body, a 2-inflatable block, a 3-inflatable slider, a 4-piston rod, a 5-piston, a 6-wedge-shaped groove, a 7-rotating shaft, an 8-rotating joint, a 9-first air pipe, a 10-first sealing plug, an 11-first sealing ring, a 12-guide wheel, a 13-anti-slip net block, a 14-second sealing ring, a 15-guide ring, a 16-second sealing plug, a 17-second air pipe, a 18-third sealing ring, a 19-dust seal, a 20-guide copper sleeve, a 21-limiting plate and a 22-spring.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "fixedly connected to" another element, it can be conventionally connected by welding or bolting or gluing.
Referring to fig. 1-5, a dual-air-path built-in cylinder type mechanical expansion shaft is disclosed in a preferred embodiment of the present utility model, and comprises an inflatable main body 1, an inflation mechanism and a ventilation mechanism; a movable cavity is arranged in the inflatable main body; the side surface of the inflatable main body 1 is provided with an inflation port communicated with the movable cavity; the expanding mechanism comprises an expanding block 2, an expanding sliding block 3, a piston rod 4 and a piston 5; one side of the expansion block 2 is transversely arranged in the expansion opening in a sliding manner; the other side of the expansion block 2 is provided with a wedge surface which gradually inclines inwards from top to bottom; the expansion sliding block 3 is movably arranged in the movable cavity; the side surface of the expansion sliding block 3 is provided with a wedge groove 6 corresponding to the wedge surface; the side of the wedge surface of the expansion block 2 is slidably arranged in the wedge groove 6; the piston rod 4 is arranged at the bottom of the expanding slide block 3; the bottom of the piston rod 4 is provided with a first air hole; the piston 5 is arranged on the side surface of the piston rod 4, and the outer side of the piston 5 is arranged on the inner wall of the movable cavity in a sliding manner, so that the bottom of the inflatable main body 1, the inner wall of the movable cavity, the piston rod 4 and the bottom of the piston 5 are sealed and enclosed to form a first sealing cavity communicated with the first air hole; the ventilation mechanism comprises a rotating shaft 7, a rotary joint 8 and a first air pipe 9; the rotating shaft 7 is arranged at the top of the inflatable body 1; the rotary joint 8 is arranged at the top of the rotary shaft 7; the top end of the first air pipe 9 is communicated with the rotary joint 8; the bottom end of the first air pipe 9 passes through the rotating shaft 7 and the expansion sliding block 3 and is arranged at the top of the piston rod 4; the first air pipe 9 is communicated with the first air hole.
Specifically, the bottom of the inflatable body 1 is provided with a first sealing plug 10; a first sealing ring 11 is arranged between the top of the first sealing plug 10 and the inner wall of the first sealing cavity.
Specifically, a plurality of guide wheels 12 are arranged on the outer side of the inflatable main body 1 in a rolling way at equal intervals up and down, so that a product to be processed can be conveniently and easily sleeved on the outer side of the inflatable main body 1 in a rolling way.
Specifically, the outside of the expansion block 2 is provided with an anti-slip net block 13, and the grabbing force between the expansion block 2 and a product to be processed after expansion is enhanced.
Specifically, a second sealing ring 14 and a guiding ring 15 are arranged between the outer side of the piston 5 and the inner wall of the movable cavity.
Specifically, a reset mechanism is also arranged; the resetting mechanism comprises a second sealing plug 16 and a second air pipe 17; the second sealing plug 16 is arranged outside the piston rod 4, and a second sealing cavity is formed between the second sealing plug 16 and the inner walls of the piston 5, the piston rod 4 and the movable cavity; the side surface of the piston rod 4 is provided with a second air hole communicated with the second sealing cavity; the top end of the second air pipe 17 is communicated with the rotary joint 8; the bottom end of the second air pipe 17 passes through the rotating shaft 7 and the expansion sliding block 3 and is arranged at the top of the piston rod 4; the second air pipe 17 is communicated with the second air hole.
Specifically, a third sealing ring 18 is arranged between the second sealing plug 16 and the inner wall of the movable cavity; a dust seal 19 and a guiding copper sleeve 20 are arranged between the second sealing plug 16 and the piston rod 4.
Specifically, a limiting groove is formed in the outer side of the expansion block 2; the expanding mechanism further comprises a limiting plate 21 and a spring 22; both ends of the limiting plate 21 are arranged outside the inflatable body 1, and the limiting plate 21 crosses the limiting groove; the spring 22 is arranged between the expansion block 2 and the limiting plate 21. The expansion block 2 can be expanded to the maximum extent that the bottom surface of the limit groove touches the limit plate 21; the spring 22 can assist the expansion block 2 by tensioning force during resetting.
Working principle: the external compressed air enters the first sealing cavity through the first air pipe 9 and the first air hole through the rotary joint 8, and the external compressed air generates pressure to push the piston 5, so that the expansion sliding block 3 is driven to move upwards, one side of the wedge surface of the expansion block 2 moves along the wedge groove 6, and the expansion block 2 moves outwards along the expansion opening and is expanded with the inner wall of the coiled material; during material changing, external compressed air enters the second sealing cavity through the second air pipe 17 and the second air hole to push the piston 5 to move downwards, so that the expansion sliding block 3 and the expansion block 2 are driven to reset, the material can be easily changed, and the normal production requirement of equipment is met.
From the above description, the utility model has the advantages of simple structure, high expansion precision and large expansion force.
While the preferred embodiments of the present utility model have been described in detail in connection with the drawings of the specification, it should be noted that the scope of the present utility model includes but is not limited to the above embodiments; the specific structure disclosed in the drawings of the specification is also a preferred embodiment of the present utility model, and other embodiments can be developed on the basis of the above description by those skilled in the art, so that any simple modification or equivalent substitution without departing from the innovative concepts of the present utility model is encompassed by the present utility model, and falls within the scope of protection of the present utility model.
Claims (8)
1. The utility model provides a two gas circuits embeds cylinder type machinery expansion axle which characterized in that includes:
an inflatable body; a movable cavity is arranged in the inflatable main body; the side surface of the inflatable main body is provided with an inflation port communicated with the movable cavity;
an expansion mechanism; the expanding mechanism comprises an expanding block, an expanding sliding block, a piston rod and a piston; one side of the expansion block is transversely arranged in the expansion opening in a sliding manner; the other side of the expansion block is provided with a wedge surface which gradually inclines inwards from top to bottom; the expansion sliding block is movably arranged in the movable cavity; the side surface of the expansion sliding block is provided with a wedge groove corresponding to the wedge surface; the side of the expansion block wedge surface is arranged in the wedge groove in a sliding manner; the piston rod is arranged at the bottom of the expanding slide block; the bottom of the piston rod is provided with a first air hole; the piston is arranged on the side surface of the piston rod, and the outer side of the piston is arranged on the inner wall of the movable cavity in a sliding manner, so that the bottom of the inflatable main body, the inner wall of the movable cavity, the piston rod and the bottom of the piston are sealed and enclosed to form a first sealing cavity communicated with the first air hole;
a ventilation mechanism; the ventilation mechanism comprises a rotating shaft, a rotary joint and a first air pipe; the rotating shaft is arranged at the top of the inflatable main body; the rotary joint is arranged at the top of the rotating shaft; the top end of the first air pipe is communicated with the rotary joint; the bottom end of the first air pipe passes through the rotating shaft and the expansion sliding block and is arranged at the top of the piston rod; the first air pipe is communicated with the first air hole.
2. The dual air path in-cylinder mechanical expansion shaft of claim 1, wherein: the bottom of the inflatable main body is provided with a first sealing plug; a first sealing ring is arranged between the top of the first sealing plug and the inner wall of the first sealing cavity.
3. The dual air path in-cylinder mechanical expansion shaft of claim 1, wherein: the outer side of the inflatable main body is provided with a plurality of guide wheels in a rolling way at equal intervals up and down.
4. The dual air path in-cylinder mechanical expansion shaft of claim 1, wherein: the outside of the expansion block is provided with an anti-slip net block.
5. The dual air path in-cylinder mechanical expansion shaft of claim 1, wherein: and a second sealing ring and a guide ring are arranged between the outer side of the piston and the inner wall of the movable cavity.
6. The dual air path in-cylinder mechanical expansion shaft of claim 1, wherein: a reset mechanism is also arranged; the reset mechanism comprises a second sealing plug and a second air pipe; the second sealing plug is arranged on the outer side of the piston rod, and a second sealing cavity is formed between the second sealing plug and the inner walls of the piston, the piston rod and the movable cavity; the side surface of the piston rod is provided with a second air hole communicated with the second sealing cavity; the top end of the second air pipe is communicated with the rotary joint; the bottom end of the second air pipe passes through the rotating shaft and the expansion sliding block and is arranged at the top of the piston rod; the second air pipe is communicated with the second air hole.
7. The dual air path in-cylinder mechanical expansion shaft of claim 6, wherein: a third sealing ring is arranged between the second sealing plug and the inner wall of the movable cavity; and a dust sealing piece and a guide copper sleeve are arranged between the second sealing plug and the piston rod.
8. The dual air path in-cylinder mechanical expansion shaft of claim 1, wherein: a limiting groove is formed in the outer side of the expansion block; the expanding mechanism further comprises a limiting plate and a spring; two ends of the limiting plate are arranged on the outer side of the inflatable main body, and the limiting plate transversely penetrates through the limiting groove; the spring is arranged between the expansion blocks and the limiting plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320924484.3U CN219859921U (en) | 2023-04-21 | 2023-04-21 | Double-gas-path built-in cylinder type mechanical expansion shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320924484.3U CN219859921U (en) | 2023-04-21 | 2023-04-21 | Double-gas-path built-in cylinder type mechanical expansion shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219859921U true CN219859921U (en) | 2023-10-20 |
Family
ID=88322275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320924484.3U Active CN219859921U (en) | 2023-04-21 | 2023-04-21 | Double-gas-path built-in cylinder type mechanical expansion shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219859921U (en) |
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2023
- 2023-04-21 CN CN202320924484.3U patent/CN219859921U/en active Active
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