CN114214694B - Pneumatic expanding tool - Google Patents
Pneumatic expanding tool Download PDFInfo
- Publication number
- CN114214694B CN114214694B CN202111562852.6A CN202111562852A CN114214694B CN 114214694 B CN114214694 B CN 114214694B CN 202111562852 A CN202111562852 A CN 202111562852A CN 114214694 B CN114214694 B CN 114214694B
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- Prior art keywords
- movable part
- cylinder
- cavity
- air
- pneumatic
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- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 229910052802 copper Inorganic materials 0.000 description 20
- 239000010949 copper Substances 0.000 description 20
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 18
- 230000003647 oxidation Effects 0.000 description 12
- 238000007254 oxidation reaction Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 7
- 230000001276 controlling effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000002441 reversible effect Effects 0.000 description 3
- 230000008093 supporting effect Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 210000003437 trachea Anatomy 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
- C25D17/06—Suspending or supporting devices for articles to be coated
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manipulator (AREA)
Abstract
The invention discloses a pneumatic expanding tool which comprises a grab handle, wherein a first movable part and a second movable part which are hinged are arranged at the end part of the grab handle, an air cylinder is further arranged at the motion end of the air cylinder, the air cylinder is connected with the first movable part and/or the second movable part through a connecting rod, and the air cylinder is used for controlling the first movable part and the second movable part to rotate relatively during telescopic motion. Above-mentioned pneumatic expanding tool to pneumatic mode supports aluminium alloy ex-trusions tip cavity fast, has saved the manpower, has promoted work efficiency, has practiced thrift manufacturing cost.
Description
Technical Field
The invention relates to the technical field of oxidation upper discharge and feeding, in particular to a pneumatic expanding tool.
Background
Because the aluminum alloy section bar of production at present is when the material is gone up to row in oxidation, and partial section bar does not have C limit and the cavity is narrower, the aluminum alloy section bar can not be fixed on the copper clamp on the equipment is gone up to row in oxidation.
The width of the aluminum alloy cavity is slightly narrower than the width of the copper clamp, so that a cavity at the end part of the aluminum alloy section is required to be supported, the cavity is widened, and the aluminum alloy section is conveniently fixed by oxidizing the copper clamp on the upper-row equipment. The existing method uses a large and blunt reverse scissors as a tool, and uses the reverse scissors to prop up the end part of the aluminum alloy section by manpower; because tens of aluminum alloy sections are needed for the previous discharge during the upper discharge of the materials, the ends of the aluminum alloy sections are supported up one by one manually, so that the speed is low, the time and the labor are wasted, the production efficiency is seriously influenced, the production time is long, the labor cost is increased, and the cost cannot be saved.
Therefore, how to provide a pneumatic expanding tool for solving the above technical problems is a technical problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a pneumatic expanding tool which can quickly support the cavity at the end part of an aluminum alloy section in a pneumatic mode, thereby saving manpower, improving working efficiency and saving production cost.
In order to achieve the above purpose, the invention provides a pneumatic expanding tool, which comprises a grab handle, wherein the end part of the grab handle is provided with a first movable part and a second movable part which are hinged, the grab handle is also provided with an air cylinder, the moving end of the air cylinder is connected with the first movable part and/or the second movable part through a connecting rod, and the air cylinder is used for controlling the first movable part and the second movable part to rotate relatively during telescopic movement.
Preferably, the grab handle is further provided with a control valve, an access end of the control valve is connected with the air supply equipment, and an access end of the control valve is connected with the air cylinder.
Preferably, the control valve is an electromagnetic valve, and the grab handle is further provided with a manual button for controlling the electromagnetic valve.
Preferably, the electromagnetic valve adopts a two-position five-way electromagnetic valve.
Preferably, the two-position five-way electromagnetic valve is provided with two air outlet holes, the two air outlet holes are respectively connected with a first air pipe and a second air pipe through air pipe connectors, the air cylinder is provided with a piston, a first cavity and a second cavity which are positioned on two sides of the piston, the first air pipe is connected into the first cavity, and the second air pipe is connected into the second cavity.
Preferably, the first movable member and the second movable member are located at the front end of the grab handle, the electromagnetic valve is located at the middle section of the grab handle, the air cylinder is located at the first side of the electromagnetic valve, which is close to the first movable member, and the manual button is located at the second side of the electromagnetic valve, which is far away from the first movable member.
Preferably, the fixed end of the cylinder is rotationally connected with the mounting seat, and the mounting seat is fixedly connected with the grab handle.
Preferably, the first end of the connecting rod is rotatably connected with the movable end of the cylinder, and the second end of the connecting rod is fixedly connected with the second movable piece.
Preferably, the first movable member is fixed relative to the handle, and the second movable member rotates relative to the first movable member and the handle.
Preferably, the fixing manner of the mounting seat, the fixing manner of the connecting rod and the fixing manner of the first movable piece are all welded and fixed.
Compared with the background art, the pneumatic expanding tool provided by the invention comprises the grab handle, the air cylinder, the first movable piece and the second movable piece, wherein the first movable piece and the second movable piece are mutually hinged and are arranged at the end part of the grab handle, the air cylinder is arranged on the grab handle, and the moving end of the air cylinder is connected with the first movable piece and/or the second movable piece through the connecting rod.
In the working process of the pneumatic expanding tool, the air cylinder provides power, under the telescopic movement of the air cylinder, the air cylinder drives the connecting rod to move, the connecting rod acts on the first movable piece and/or the second movable piece again, the first movable piece and/or the second movable piece which are subjected to acting force generate rotary movement, and then the first movable piece and the second movable piece rotate relatively, and when the air cylinder controls the first movable piece and the second movable piece to rotate relatively and open outwards, the cavity at the end part of the aluminum alloy section can be expanded, so that the cavity is widened; compared with manual operation, the pneumatic expanding tool adopts a pneumatic mode of the air cylinder, can quickly expand the cavity at the end part of the aluminum alloy section, saves labor, improves working efficiency and saves production cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a pneumatic expanding tool according to an embodiment of the present invention;
FIG. 2 is a front view of a first instance of a copper clip of an oxidation uprow apparatus;
FIG. 3 is a side view of a first instance of a copper clip of an oxidation uprow apparatus;
FIG. 4 is a front view of a second instance of a copper clip of an oxidation uprow apparatus;
FIG. 5 is a side view of a second instance of a copper clip of an oxidation upper row apparatus;
fig. 6 is a graph of expanding effect of the pneumatic expanding tool according to the embodiment of the present invention;
FIG. 7 is a schematic diagram illustrating a first control of a two-position five-way solenoid valve according to an embodiment of the present invention;
fig. 8 is a second control schematic diagram of the two-bit five-way solenoid valve according to the embodiment of the present invention.
Wherein:
1-grab handle, 2-control valve, 3-manual button, 4-air pipe joint, 5-first trachea, 6-second trachea, 7-cylinder, 8-connecting rod, 9-first gas vent, 10-intake pipe, 11-second gas vent, 12-mount pad, 13-first moving part, 14-second moving part, 01-copper clamp upper portion, 02-copper clamp lower portion, 03-work piece.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The present invention will be further described in detail below with reference to the drawings and detailed description for the purpose of enabling those skilled in the art to better understand the aspects of the present invention.
Referring to fig. 1 to 8, fig. 1 is a schematic structural diagram of a pneumatic expanding tool according to an embodiment of the present invention, fig. 2 is a front view of a first case of a copper clip of an upper oxidation device, fig. 3 is a side view of the first case of the copper clip of the upper oxidation device, fig. 4 is a front view of a second case of the copper clip of the upper oxidation device, fig. 5 is a side view of the second case of the copper clip of the upper oxidation device, fig. 6 is an expanding effect diagram of the pneumatic expanding tool according to an embodiment of the present invention, fig. 7 is a first control schematic diagram of a two-position five-way electromagnetic valve according to an embodiment of the present invention, and fig. 8 is a second control schematic diagram of the two-position five-way electromagnetic valve according to an embodiment of the present invention.
In a first specific embodiment, the pneumatic expanding tool provided by the invention comprises a grab handle 1, a cylinder 7, a first movable piece 13 and a second movable piece 14.
Wherein, the cylinder 7, the first movable piece 13 and the second movable piece 14 are all arranged on the grab handle 1; the first movable member 13 and the second movable member 14 are located at the end of the handle 1, which may be the front end of the handle 1, and at this time, the rear end of the handle 1 may be held by a user, and the cylinder 7 is disposed at other positions of the handle 1. The first movable piece 13 and the second movable piece 14 are hinged, and can rotate relatively to realize opening and closing repeatedly; the cylinder 7 has the characteristic of being telescopic, and the motion end of the cylinder 7 is connected with the connecting rod 8 and is connected with the first movable piece 13 and/or the second movable piece 14 through the connecting rod 8.
It should be noted that the first end of the connecting rod 8 must be connected to the moving end of the cylinder 7, but the second end may be connected to either the first movable member 13 or the second movable member 14, which is within the scope of the present embodiment.
For example, when the connecting rod 8 is connected with the first movable member 13, the air cylinder 7 acts, the moving end of the air cylinder 7 drives the connecting rod 8 to move, the connecting rod 8 drives the first movable member 13 to move, the second movable member 14 is regarded as being fixed, and at this time, the second movable member 14 is fixedly connected with the grab handle 1, so that the first movable member 13 and the second movable member 14 relatively rotate.
For example, when the connecting rod 8 is connected to the second movable member 14, the air cylinder 7 acts, the moving end of the air cylinder 7 drives the connecting rod 8 to move, the connecting rod 8 drives the second movable member 14 to move, the first movable member 13 is regarded as stationary, and at this time, the first movable member 13 is fixedly connected to the handle 1, so that the first movable member 13 and the second movable member 14 rotate relatively.
Illustratively, two sets of cylinders 7 and connecting rods 8 which are arranged in a mirror image mode are adopted on the grab handle 1, the first movable piece 13 and the second movable piece 14 are hinged to the grab handle 1 through pin shafts, the first set of cylinders 7 and the connecting rods 8 are connected with the first movable piece 13, the second set of cylinders 7 and the connecting rods 8 are connected with the second movable piece 14, and further the first movable piece 13 and the second movable piece 14 can be controlled through the two sets of cylinders 7 respectively to enable the first movable piece 13 and the second movable piece 14 to rotate relatively.
In this embodiment, the same as the existing expanding principle, the structure of scissors is used to expand the cavity of the workpiece 03 when the workpiece is opened outwards; the workpiece 03 here is in particular an aluminum alloy profile, and the cavity is in particular an end cavity of an aluminum alloy profile. Compared with manual operation, the pneumatic expanding tool in the embodiment adopts a pneumatic mode of the air cylinder 7, so that the end cavity of the aluminum alloy section can be quickly supported, labor is saved, working efficiency is improved, and production cost is saved.
Referring to fig. 2 and 3, the upper portion 01 of the copper clip is used in cooperation with the lower portion 02 of the copper clip, the width of the cavity of the workpiece 03 is smaller than the upper portion 01 of the copper clip in the upper oxidation device, and at this time, the upper portion 01 of the copper clip cannot be placed into the cavity of the workpiece 03, so that subsequent operations cannot be performed. Referring to fig. 4 and 5, after expanding the cavity of the workpiece 03, the width of the cavity becomes larger until the width is larger than the copper clip upper portion 01, so that the copper clip upper portion 01 is conveniently placed into the cavity of the workpiece 03 and then fixed.
The pneumatic expanding tool has the functions that the cavity of the workpiece 03 is expanded, so that the width of the cavity is enlarged, and the fixing requirement of a copper clamp is met; unlike manual work, this embodiment is a pneumatic expanding.
In a specific working process, the air cylinder 7 provides power, under the telescopic movement of the air cylinder 7, the air cylinder 7 drives the connecting rod 8 to move, the connecting rod 8 acts on the first movable piece 13 or the second movable piece 14 again, the first movable piece 13 or the second movable piece 14 which receives acting force generates rotary movement, and then the first movable piece 13 and the second movable piece 14 rotate relatively, and when the air cylinder 7 controls the first movable piece 13 and the second movable piece 14 to rotate relatively and open outwards, the cavity at the end part of the aluminum alloy section can be expanded, so that the purpose is achieved.
For better technical effect, the grab handle 1 is also provided with a control valve 2, the access end of the control valve 2 is connected with air supply equipment, and the access end of the control valve 2 is connected with an air cylinder 7.
In this embodiment, the pneumatic expanding tool may be used with an external air supply device, and the air supply device supplies air to the pneumatic expanding tool; in the pneumatic expanding tool, gas is introduced into the control valve 2, and is sent into the air cylinder 7 after being controlled and regulated by the control valve 2, so that the telescopic state of the air cylinder 7 is changed, and the control of the first movable piece 13 and the second movable piece 14 is realized.
Further, the control valve 2 is an electromagnetic valve, and the grab handle 1 is further provided with a manual button 3 for controlling the electromagnetic valve.
It should be noted that, in use, the compressed air valve of the air supply device is opened first to supply the air source, and then the manual button 3 on the solenoid valve is pressed to provide the valve core reversing of the solenoid valve, so that the compressed air can enter the cylinder 7.
Specifically, the solenoid valve adopts a two-position five-way solenoid valve.
In this embodiment, "two-bit" means that two positions are controllable, and "five-way" means that: an air inlet, a positive air vent (a positive air supply to the target device), a negative air vent (a negative air supply to the target device), a positive air vent (optionally with a muffler), and a negative air vent (optionally with a muffler).
More specifically, as shown in fig. 1, the two exhaust holes are a first exhaust hole 9 and a second exhaust hole 11, respectively, the two exhaust holes are connected with a first air pipe 5 and a second air pipe 6 through an air pipe joint 4, respectively, and the air inlet hole is connected with an air supply device through an air inlet pipe 10.
In this embodiment, the cylinder 7 is a mini cylinder, a piston is arranged in the cylinder body of the mini cylinder, the piston is connected with a piston rod, two sides of the piston are a first cavity and a second cavity, the first air pipe 5 is connected with the first cavity, the second air pipe 6 is connected with the second cavity, and the mini cylinder alternately supplies air from two sides of the piston and outputs force in one or two directions.
Please refer to fig. 7 and 8,R: first exhaust port 9,P: air inlet, S: second exhaust port 11, a: first chamber gas port, B: a second chamber port; as shown in FIG 7, when in a static state, P in the two-position five-way electromagnetic valve is communicated with B, A is communicated with R, at the moment, B is in air inlet, A is communicated with R and is exhausted, and a piston rod in the cylinder body extends forwards; as shown in fig. 8, when in a manual state, the two-position five-way electromagnetic valve is directly connected with the air inlet A and the air outlet B through the air inlet A and the air outlet B, and the piston rod in the air cylinder is contracted.
In the embodiment, the tool uses compressed air as power, and the expanding action is realized by manually controlling the valve; the tool is simple to operate, high in action speed, large in strength and good in use effect; the operation is not needed by the physical force of a person, and the working time can be greatly reduced because the action speed is high, so that the working efficiency is greatly improved, and the use effect is well achieved.
In a specific embodiment, the first movable member 13 and the second movable member 14 are located at the front end of the grip 1, the solenoid valve is located at the middle section of the grip 1, the cylinder 7 is located at the first side of the solenoid valve close to the first movable member 13, and the manual push button 3 is located at the second side of the solenoid valve far from the first movable member 13.
In this embodiment, the rear end of the grip 1 is convenient for the user to hold with his hand; the manual button 3 is close to the holding position and is easy to control; the first movable piece 13 and the second movable piece 14 are connected by pins, and are far away from the holding position, so that the use safety is high.
In addition, the fixed end of the air cylinder 7 is rotatably arranged on the mounting seat 12, namely, the air cylinder 7 is rotatably connected with the mounting seat 12, so that the air cylinder 7 connected with the mounting seat is guaranteed not to move back and forth, but is rotatable, and the mounting seat 12 is fixedly connected with the grab handle 1.
In addition to this, a first end of the connecting rod 8 is rotatably connected to the movable end of the cylinder 7, and a second end of the connecting rod 8 is fixedly connected to the second movable member 14.
Illustratively, the first movable member 13 is fixed relative to the handle 1 and the second movable member 14 rotates relative to the first movable member 13 and the handle 1.
The fixing manner of the mounting seat 12, the fixing manner of the connecting rod 8 and the fixing manner of the first movable member 13 are all welding and fixing manners.
In a use instruction, the electromagnetic coil of a common two-position five-way electromagnetic valve is removed, no power is needed, a manual button 3 arranged on the electromagnetic valve is used for controlling the valve core of the two-position five-way electromagnetic valve to move, and an interface is switched; the valve core can be switched on only by opening a compressed air source for use, (if a conventional two-position five-way electromagnetic valve is provided with a coil, the valve core is electrified to realize the reversing, and the valve core is automatically controlled through an electric signal, but cannot be manually controlled according to actual conditions, so that the two-position five-way electromagnetic valve is changed into manual control.) the specific flow is as follows:
by designing a tool for pneumatically supporting the cavity of the end head of the aluminum alloy section, a compressed air source is used as a power source, and the initial state is that a two-position five-way electromagnetic valve and a mini cylinder are in a static state, as shown in fig. 7: compressed air enters the electromagnetic valve through P, is directly led to B and then enters the mini cylinder, so that the mini cylinder performs positive action, B in the mini cylinder is in air inlet, A is communicated with R for air exhaust, a piston rod in the mini cylinder extends forwards, the second movable part 14 is driven by the connecting rod 8, the front end of the tool is in a closed state, the end part of the tool can be plugged into a cavity in alignment with the end part of the aluminum alloy section, and the tool is ready to start a next supporting action.
Then, the manual button 3 on the two-position five-way electromagnetic valve is pressed to move the valve core, and the valve core enters a manual state, as shown in fig. 8: p in the two-position five-way electromagnetic valve is directly connected with A, then enters into a mini cylinder to enable the mini cylinder to conduct reverse action, at the moment, the cylinder B is exhausted, the cylinder B is communicated with S to exhaust, a piston rod in the cylinder is contracted, and then the second movable piece 14 is driven by the connecting rod 8 to enable the front end of the tool to be in an opening state, so that the supporting action is achieved.
It should be noted that in this specification relational terms such as first and second are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The pneumatic expanding tool provided by the invention is described in detail above. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Claims (10)
1. The pneumatic expanding tool is characterized by comprising a grab handle (1), wherein the rear end of the grab handle (1) can be held by a user, a first movable part (13) and a second movable part (14) which are hinged are arranged at the front end of the grab handle (1), an air cylinder (7) is further arranged at the grab handle (1), the moving end of the air cylinder (7) is connected with the first movable part (13) and/or the second movable part (14) through a connecting rod (8), and the air cylinder (7) is used for controlling the first movable part (13) and the second movable part (14) to rotate relatively when in telescopic movement so as to expand a cavity of a workpiece (03) when the workpiece is outwards opened; the workpiece (03) is an aluminum alloy section, and the cavity of the workpiece (03) is an end cavity of the aluminum alloy section.
2. Pneumatic expanding tool according to claim 1, characterized in that the grip (1) is further provided with a control valve (2), the inlet end of the control valve (2) is connected with an air supply device, and the outlet end of the control valve (2) is connected with the cylinder (7).
3. Pneumatic expanding tool according to claim 2, characterized in that the control valve (2) is a solenoid valve, the grip (1) being further provided with a manual button (3) for controlling the solenoid valve.
4. A pneumatic expanding tool according to claim 3, wherein the solenoid valve is a two-position five-way solenoid valve.
5. The pneumatic expanding tool according to claim 4, wherein the two-position five-way electromagnetic valve is provided with two air outlet holes, the two air outlet holes are respectively connected with a first air pipe (5) and a second air pipe (6) through an air pipe joint (4), the air cylinder (7) is provided with a piston, a first cavity and a second cavity which are positioned on two sides of the piston, the first air pipe (5) is connected into the first cavity, and the second air pipe (6) is connected into the second cavity.
6. A pneumatic spreading tool according to claim 3, wherein the first movable member (13) and the second movable member (14) are located at the front end of the grip (1), the solenoid valve is located in the middle section of the grip (1), the cylinder (7) is located at a first side of the solenoid valve close to the first movable member (13), and the manual push button (3) is located at a second side of the solenoid valve remote from the first movable member (13).
7. The pneumatic expanding tool according to any one of claims 1 to 6, wherein the fixed end of the cylinder (7) is rotatably mounted on a mounting seat (12), and the mounting seat (12) is fixedly connected with the grab handle (1).
8. The pneumatic expanding tool according to claim 7, wherein a first end of the connecting rod (8) is rotatably connected with the movable end of the cylinder (7), and a second end of the connecting rod (8) is fixedly connected with the second movable member (14).
9. Pneumatic spreading tool according to claim 8, wherein the first movable part (13) is fixed relative to the grip (1) and the second movable part (14) is rotatable relative to the first movable part (13) and the grip (1).
10. Pneumatic expanding tool according to claim 9, characterized in that the fixing means of the mounting seat (12), the fixing means of the connecting rod (8) and the fixing means of the first movable member (13) are all welded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111562852.6A CN114214694B (en) | 2021-12-20 | 2021-12-20 | Pneumatic expanding tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111562852.6A CN114214694B (en) | 2021-12-20 | 2021-12-20 | Pneumatic expanding tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114214694A CN114214694A (en) | 2022-03-22 |
| CN114214694B true CN114214694B (en) | 2024-02-13 |
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|---|---|---|---|
| CN202111562852.6A Active CN114214694B (en) | 2021-12-20 | 2021-12-20 | Pneumatic expanding tool |
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| CN (1) | CN114214694B (en) |
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