CN108672590B - Self-locking driving device and bending mechanism with same - Google Patents
Self-locking driving device and bending mechanism with same Download PDFInfo
- Publication number
- CN108672590B CN108672590B CN201810792518.1A CN201810792518A CN108672590B CN 108672590 B CN108672590 B CN 108672590B CN 201810792518 A CN201810792518 A CN 201810792518A CN 108672590 B CN108672590 B CN 108672590B
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- China
- Prior art keywords
- connecting plate
- plate
- driving device
- hinged
- air cylinder
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- 238000005452 bending Methods 0.000 title claims abstract description 45
- 230000007246 mechanism Effects 0.000 title claims abstract description 24
- 230000000712 assembly Effects 0.000 claims description 10
- 238000000429 assembly Methods 0.000 claims description 10
- 230000007306 turnover Effects 0.000 claims description 2
- 230000003068 static effect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 241001631030 Explorator Species 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
- B21D53/06—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of metal tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/06—Bending rods, profiles, or tubes in press brakes or between rams and anvils or abutments; Pliers with forming dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/16—Auxiliary equipment, e.g. for heating or cooling of bends
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention discloses a self-locking driving device, which comprises an air cylinder and a clamping plate directly or indirectly fixed with one side of an air cylinder main body, wherein an air cylinder connector is arranged on an output shaft of the air cylinder, the air cylinder connector is connected with a fixed plate through a group of connecting plate components, the connecting plate components comprise a first connecting plate, a second connecting plate and a third connecting plate, one end of the first connecting plate is hinged with the air cylinder connector, the other end of the first connecting plate is hinged with the second connecting plate and the third connecting plate on the same pin shaft, one end of the second connecting plate is hinged with the first connecting plate, the other end of the second connecting plate is hinged with the clamping plate, one end of the third connecting plate is hinged with the first connecting plate, and the other end of the third connecting plate is hinged with the fixed plate. The self-locking driving device solves the problem that the thrust of the cylinder is difficult to maintain after ejection in place, and can be used for replacing an oil cylinder in various structures needing to maintain static thrust. The invention also discloses a bending mechanism with the device.
Description
Technical Field
The invention relates to a pipe fitting forming device, in particular to a self-locking driving device and a bending mechanism with the same.
Background
U-shaped pipes, which are generally manufactured by copper pipes, are main accessories of the heat exchange pipes. In practical use, the U-shaped tube radiator is generally formed after being connected with the short U-shaped connector, and has extremely wide application in the field of heat exchange.
Because copper is expensive, the industry tends to use copper tubes with thinner tube walls to process heat exchange tube fittings such as U-tubes for cost saving. However, the copper pipe with thinner pipe wall has softer texture, and is easy to be flattened or wrinkled in bending processing, thereby influencing the quality of the finished product. And the existing bending equipment is difficult to process the U-shaped pipe with smaller center distance due to the limitation of the size of the machine head.
Disclosure of Invention
According to one aspect of the present invention, there is provided a self-locking driving device comprising a cylinder and a clamping plate directly or indirectly fixed to one side of a cylinder main body, wherein an output shaft of the cylinder is provided with a cylinder connector, the cylinder connector is connected to a fixing plate through a set of connecting plate assemblies, the connecting plate assemblies comprise a first connecting plate, a second connecting plate and a third connecting plate, one end of the first connecting plate is hinged to the cylinder connector, the other end of the first connecting plate is hinged to the second connecting plate and the third connecting plate together on the same pin shaft, one end of the second connecting plate is hinged to the first connecting plate, the other end of the second connecting plate is hinged to the clamping plate, one end of the third connecting plate is hinged to the first connecting plate, and the other end of the third connecting plate is hinged to the fixing plate.
In some embodiments, two opposite sides of the cylinder body are respectively fixed with a clamping plate, and the connecting plate assembly is arranged in a space formed between the two clamping plates.
In some embodiments, the first connecting plate is hinged to the cylinder connector by a pin shaft, the second connecting plate is hinged to the clamping plate by a pin shaft, and the third connecting plate is hinged to the fixing plate by a pin shaft.
In some embodiments, two sides of the cylinder connector are respectively provided with a group of connecting plate assemblies, and the two groups of connecting plate assemblies are mutually symmetrical by taking the axis of the cylinder connector as an axis.
In some embodiments, two ends of the first connecting plate, the second connecting plate and the third connecting plate are respectively provided with a hinge hole, and a pin shaft is arranged in each hinge hole.
In some embodiments, when the cylinder lifts the fixing plate into place, the line between the axes of the two hinge holes of the second connecting plate coincides with the line between the axes of the two hinge holes of the third connecting plate, and the line between the axes of the two hinge holes of the two first connecting plates respectively coincides horizontally.
In some embodiments, the first web, the second web, and the third web are identical in shape.
According to the self-locking driving device adopting the technical scheme, the connecting plate assembly formed by mutually hinging the connecting plates forms a self-locking structure, and after the air cylinder pushes the fixing plate out of place through the connecting plate assembly, even if the fixing plate bears larger pressure, the air cylinder cannot retract, so that the problem that the thrust of the air cylinder is difficult to maintain after ejection in place is solved. The self-locking driving device can be used for replacing an oil cylinder to be used in various structures needing to maintain static thrust.
According to another aspect of the present invention, there is provided a bending mechanism including a bearing housing and a spindle rotatably connected to the bearing housing, the bearing housing being fixedly connected to a profiling mechanism, a bending arm being mounted on the spindle, the bending arm being provided with the profiling mechanism, the profiling mechanism including a driving device and a profiling mounted on a fixing plate of the driving device, the profiling mechanism including a clamping die, a bending die and a driving device, the clamping die being connected to the fixing plate of the driving device, the pipe passing between the clamping die and the clamping die, the profiling being provided on the same side of the pipe as the clamping die, the bending die being adjacent to a curved die face having an arc shape at one end of the profiling, the driving device driving the clamping die to approach the bending die to clamp the pipe, and then the clamping die and the bending die clamping the pipe as a whole turning around the spindle, and at the same time, the profiling being driven by the driving device to lift the pipe to the profiling to bend the pipe along the curved die face to thereby machine the pipe into a predetermined shape, the driving device being the self-locking driving device as described above.
According to the bending mechanism adopting the technical scheme, the self-locking driving device is used for driving the profiling and the clamping die, and the self-locking driving device overcomes the problem that the thrust of the air cylinder is difficult to maintain after ejection in place through the self-locking structure, so that the oil cylinder in the prior art is replaced. The bending mechanism does not need to be provided with a hydraulic power system, so that the structure is simplified, the cost is reduced, and the pollution of hydraulic oil to products and the environment is avoided, thereby being more energy-saving and environment-friendly and meeting the requirement of clean production. And the cylinder has elasticity in the advancing process, so that the clamping or profiling is prevented from being used for clamping or deforming the pipe fitting due to too high speed or too high force in the clamping process.
Drawings
Fig. 1 is a schematic structural diagram of a bending mechanism according to an embodiment of the present invention.
Fig. 2 is a schematic structural view of the driving device shown in fig. 1.
Fig. 3 is an internal schematic view of the driving device shown in fig. 2.
Fig. 4 is a schematic view showing an ejection state of the driving device shown in fig. 2
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings.
Fig. 1 schematically shows a bending mechanism according to an embodiment of the invention. As shown, the device comprises a bearing housing 11 and a spindle 1 rotatably connected to the bearing housing 11.
Wherein the bearing seat 11 is fixedly connected with one profiling mechanism 4.
The main shaft 1 is provided with a bent arm 2.
The bending arm 2 is provided with a bending die mechanism 3.
The master mechanism 4 includes a driving device 5 and a master 41 mounted on a fixed plate of the driving device 5.
The bending mechanism 3 includes a clamping die 31, a bending die 32 and a driving device 5.
The clamping die 31 is connected to a fixed plate of the driving device 5.
The pipe passes between the bending die 32 and the clamping die 31.
The profile 41 is provided on the same side of the pipe as the clamping profile 31.
The end of the bending die 32 near the explorator 41 is a circular arc-shaped bending die surface.
When bending, the driving device 5 drives the clamping die 31 to approach the bending die 32 so as to clamp the pipe fitting, and then the clamping die 31 and the bending die 32 clamp the pipe fitting integrally and turn over by taking the main shaft 1 as the axis, meanwhile, the profiling 41 also supports the pipe fitting to press towards the bending die 32 under the driving of the driving device 5 so as to bend the pipe fitting along the bending die surface, thereby processing the pipe fitting into a preset shape.
In this embodiment, the driving device 5 is a self-locking driving device.
As shown in fig. 2 and 3, the driving device 5 includes a cylinder 51 and a clamping plate 52 directly or indirectly fixed to a main body side of the cylinder 51.
An output shaft of the air cylinder 51 is provided with an air cylinder connector 55.
The cylinder connector 55 is connected to a fixed plate 53 by a set of connecting plate assemblies 54.
The link plate assembly 54 includes a first link plate 541, a second link plate 542, and a third link plate 543.
One end of the first connecting plate 541 is hinged to the cylinder connector 55, and the other end of the first connecting plate 541 is hinged to the same pin shaft 56 together with the second connecting plate 542 and the third connecting plate 543.
The second link plate 542 is hinged at one end to the first link plate 541 and at the other end to the clamping plate 52.
One end of the third link plate 543 is hinged to the first link plate 541, and the other end is hinged to the fixed plate 53.
In this embodiment, two opposite sides of the main body of the air cylinder 51 are respectively fixed with a clamping plate 52, and the connecting plate assembly 54 is disposed in a space formed between the two clamping plates 52.
In this embodiment, the hinge mode between the members is pin hinge, that is, the first connecting plate 541 is hinged to the cylinder connector 55 by using a pin 56, the second connecting plate 542 is hinged to the clamping plate 52 by using a pin 56, and the third connecting plate 543 is also hinged to the fixing plate 53 by using a pin 56.
In this embodiment, two sets of connecting plate assemblies 54 are respectively disposed on two sides of the cylinder connector 55, and the two sets of connecting plate assemblies 54 are symmetrical with each other with the axis of the cylinder connector 55 as the axis.
The first connecting plate 541, the second connecting plate 542, and the third connecting plate 543 are identical in shape, and both ends thereof are respectively provided with a hinge hole.
As shown in fig. 4, when the cylinder 51 lifts the fixing plate 53 into position, the line a2 between the axes of the two hinge holes of the second connecting plate 542 coincides with the line a3 between the axes of the two hinge holes of the third connecting plate 543, and the line a1 between the axes of the two hinge holes of the two first connecting plates 541 coincides horizontally.
Thus, the two sets of connecting plate assemblies form an isosceles triangle arm structure, and the cylinder connector 55 is just located at the center point of the isosceles triangle base.
When the fixing plate 53 receives downward pressure, the pressure is transferred to the pin shaft between the second link plate 542 and the clamping plate 52 through the downward of the second link plate 542 and the third link plate 543 which are connected in line, and since the two first link plates 541 are horizontally and connected in line, the downward pressure applied to the cylinder joint 55 by the third link plate 543 through the hinge point is almost zero, thereby constituting a self locking structure, and the fixing plate 53 cannot be moved downward.
When the cylinder 51 actively retracts, the two first connecting plates 541 are destroyed in a horizontal and linear state, one ends of the second connecting plate 542 and the third connecting plate 543 are respectively closed to the cylinder connector 55 through the hinge point while the two first connecting plates 541 form an included angle, so that the state that the second connecting plate 542 and the third connecting plate 543 are connected in a linear state is destroyed, the self-locking structure is destroyed, and the cylinder 51 moves the fixing plate 53 downwards through the cylinder connector 55 and the connecting plate assembly.
According to the self-locking driving device adopting the technical scheme, the connecting plate assembly formed by mutually hinging the connecting plates forms a self-locking structure, and after the air cylinder pushes the fixing plate out of place through the connecting plate assembly, even if the fixing plate bears larger pressure, the air cylinder cannot retract, so that the problem that the thrust of the air cylinder is difficult to maintain after ejection in place is solved. The self-locking driving device can be used for replacing an oil cylinder to be used in various structures needing to maintain static thrust.
According to the bending mechanism adopting the technical scheme, the self-locking driving device is used for driving the profiling and the clamping die, and the self-locking driving device overcomes the problem that the thrust of the air cylinder is difficult to maintain after ejection in place through the self-locking structure, so that the oil cylinder in the prior art is replaced. The bending mechanism does not need to be provided with a hydraulic power system, so that the structure is simplified, the cost is reduced, and the pollution of hydraulic oil to products and the environment is avoided, thereby being more energy-saving and environment-friendly and meeting the requirement of clean production. And the cylinder has elasticity in the advancing process, so that the clamping or profiling is prevented from being used for clamping or deforming the pipe fitting due to too high speed or too high force in the clamping process.
What has been described above is merely some embodiments of the present invention. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the invention.
Claims (3)
1. The self-locking driving device is characterized by comprising an air cylinder and a clamping plate directly or indirectly fixed with one side of a main body of the air cylinder, wherein an air cylinder connector is arranged on an output shaft of the air cylinder, the air cylinder connector is connected with a fixed plate through a group of connecting plate components, and the connecting plate components comprise a first connecting plate, a second connecting plate and a third connecting plate;
One end of the first connecting plate is hinged with the air cylinder connector, and the other end of the first connecting plate is hinged with the second connecting plate and the third connecting plate on the same pin shaft;
one end of the second connecting plate is hinged with the first connecting plate, and the other end of the second connecting plate is hinged with the clamping plate;
one end of the third connecting plate is hinged with the first connecting plate, and the other end of the third connecting plate is hinged with the fixed plate;
Two opposite sides of the main body of the air cylinder are respectively fixed with one clamping plate, and the connecting plate assembly is arranged in a space formed between the two clamping plates;
The two sides of the air cylinder connector are respectively provided with a group of connecting plate assemblies, and the two groups of connecting plate assemblies are mutually symmetrical by taking the axis of the air cylinder connector as an axis;
two ends of the first connecting plate, the second connecting plate and the third connecting plate are respectively provided with a hinge hole, and a pin shaft is arranged in each hinge hole;
The first connecting plate is hinged with the cylinder connector by a pin shaft, the second connecting plate is hinged with the clamping plate by a pin shaft, and the third connecting plate is also hinged with the fixing plate by a pin shaft;
When the air cylinder jacks up the fixing plate to be in place, the connecting line between the axes of the two hinge holes of the second connecting plate is overlapped with the connecting line between the axes of the two hinge holes of the third connecting plate, and the connecting lines between the axes of the two hinge holes of the two first connecting plates are horizontal and overlapped.
2. The self-locking driving device according to claim 1, wherein the first connecting plate, the second connecting plate and the third connecting plate are identical in shape.
3. The bending mechanism comprises a bearing seat and a main shaft which is rotationally connected with the bearing seat, wherein the bearing seat is fixedly connected with a profiling mechanism, a bending arm is arranged on the main shaft, and a bending mechanism is arranged on the bending arm;
the profiling mechanism comprises a first driving device and a profiling arranged on a fixed plate of the first driving device;
The bending mechanism comprises a clamping die, a bending die and a second driving device, wherein the clamping die is connected with a fixing plate of the second driving device, a pipe fitting penetrates through the space between the bending die and the clamping die, the profiling is arranged on the same side of the pipe fitting and the clamping die, the bending die is close to a bending die surface with one end being arc-shaped, when the bending die is bent, the second driving device drives the clamping die to approach the bending die so as to clamp the pipe fitting, then the clamping die and the bending die clamp the pipe fitting integrally and turn over by taking a main shaft as an axle center, and meanwhile, the profiling is driven by the first driving device to support the pipe fitting to be tightly pressed to the bending die so as to bend the pipe fitting along the bending die surface, and the first driving device and the second driving device are self-locking driving devices according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810792518.1A CN108672590B (en) | 2018-07-18 | 2018-07-18 | Self-locking driving device and bending mechanism with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810792518.1A CN108672590B (en) | 2018-07-18 | 2018-07-18 | Self-locking driving device and bending mechanism with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108672590A CN108672590A (en) | 2018-10-19 |
| CN108672590B true CN108672590B (en) | 2024-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810792518.1A Active CN108672590B (en) | 2018-07-18 | 2018-07-18 | Self-locking driving device and bending mechanism with same |
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| CN (1) | CN108672590B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109530504A (en) * | 2018-12-27 | 2019-03-29 | 苏州华尔普机械有限公司 | A kind of pipe bender head structure with self-locking function |
| CN109719176A (en) * | 2019-03-01 | 2019-05-07 | 中山精达特克机械有限公司 | A kind of comprehensive bending integral machine |
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| CN201580008U (en) * | 2009-12-30 | 2010-09-15 | 江苏扬力集团有限公司 | Clamping device of press machine movable work platform |
| JP2013000794A (en) * | 2011-06-22 | 2013-01-07 | Mitsubishi Electric Corp | Pipe bender, method for manufacturing bending pipe, and pipe joint |
| CN204639467U (en) * | 2015-05-06 | 2015-09-16 | 中国第一汽车股份有限公司 | Be elevated single cylinder locking mechanism |
| CN105149957A (en) * | 2015-07-01 | 2015-12-16 | 杭州和良机电设备有限公司 | Laying-off, tube ending and tube bending integrated equipment |
| CN106238528A (en) * | 2016-08-30 | 2016-12-21 | 中山精达特克机械有限公司 | A kind of swan neck system and there is the numerical control sawing sheet pipe end bending integral machine of this device |
| CN107282721A (en) * | 2017-07-28 | 2017-10-24 | 奥美森智能装备股份有限公司 | A kind of clamping die step-up system and its method of work |
| CN208810982U (en) * | 2018-07-18 | 2019-05-03 | 中山精达特克机械有限公司 | A kind of self-locking driving device and the bending mechanism with the device |
-
2018
- 2018-07-18 CN CN201810792518.1A patent/CN108672590B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201580008U (en) * | 2009-12-30 | 2010-09-15 | 江苏扬力集团有限公司 | Clamping device of press machine movable work platform |
| JP2013000794A (en) * | 2011-06-22 | 2013-01-07 | Mitsubishi Electric Corp | Pipe bender, method for manufacturing bending pipe, and pipe joint |
| CN204639467U (en) * | 2015-05-06 | 2015-09-16 | 中国第一汽车股份有限公司 | Be elevated single cylinder locking mechanism |
| CN105149957A (en) * | 2015-07-01 | 2015-12-16 | 杭州和良机电设备有限公司 | Laying-off, tube ending and tube bending integrated equipment |
| CN106238528A (en) * | 2016-08-30 | 2016-12-21 | 中山精达特克机械有限公司 | A kind of swan neck system and there is the numerical control sawing sheet pipe end bending integral machine of this device |
| CN107282721A (en) * | 2017-07-28 | 2017-10-24 | 奥美森智能装备股份有限公司 | A kind of clamping die step-up system and its method of work |
| CN208810982U (en) * | 2018-07-18 | 2019-05-03 | 中山精达特克机械有限公司 | A kind of self-locking driving device and the bending mechanism with the device |
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| Publication number | Publication date |
|---|---|
| CN108672590A (en) | 2018-10-19 |
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