CN114833231A - Self-resetting extending mechanism for three-dimensional stretch bender - Google Patents
Self-resetting extending mechanism for three-dimensional stretch bender Download PDFInfo
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- CN114833231A CN114833231A CN202210422651.4A CN202210422651A CN114833231A CN 114833231 A CN114833231 A CN 114833231A CN 202210422651 A CN202210422651 A CN 202210422651A CN 114833231 A CN114833231 A CN 114833231A
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- 230000007246 mechanism Effects 0.000 title claims abstract description 34
- 238000005452 bending Methods 0.000 claims description 10
- 238000003462 Bender reaction Methods 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 33
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000007792 addition Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000346 nonvolatile oil Substances 0.000 description 1
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- 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
- B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
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- 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
- B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
- B21D11/22—Auxiliary equipment, e.g. positioning devices
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- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention relates to the technical field of stretch benders, and provides a self-resetting extension mechanism for a three-dimensional stretch benders, which comprises: an outer frame; the power assembly is provided with an inner frame and a telescopic oil cylinder rotatably arranged on the inner frame, the inner frame is rotatably arranged on the outer frame, a first positioning block is fixedly arranged on the telescopic oil cylinder, and a second positioning block which is mutually nested with the first positioning block is movably arranged on the inner frame; when the first positioning block and the second positioning block are abutted against each other, the extension oil cylinder can be driven to rotate to a preset position. Compared with the prior art, the automatic resetting device has the advantages that the extension oil cylinder is driven to rotate through mutual abutting between the first positioning block and the second positioning block, the automatic resetting of the extension oil cylinder is realized, and the inner frame can drive the extension oil cylinder to rotate to the preset position around the vertical direction through the rotating arrangement of the inner frame relative to the outer frame, so that the resetting of the extension oil cylinder in the vertical direction is completed.
Description
Technical Field
The invention relates to the technical field of stretch benders, in particular to a self-resetting extending mechanism for a three-dimensional stretch benders.
Background
The three-dimensional arc bending machine can process the section in multiple directions and multiple angles, when the three-dimensional arc bending machine is used, the clamping cylinders at two ends clamp two ends of the section, the stretching cylinders perform pre-stretching to eliminate elastic deformation, the section enters a plastic deformation state, then the swing arm cylinders perform actions and bend by using the mold to achieve the required shape, the requirements on some sections are high, for example, two ends have large warping arc and distortion, the mold is difficult to directly form, and the requirements of customers can be met only by using a drawing mechanism, a rotating mechanism and a tilting mechanism on the three-dimensional arc bending machine. The extension mechanism of the three-dimensional stretch bender changes the traditional fixed oil cylinder linear stretching into the freely stretching movement which can flexibly rotate, and can improve the processing technology of products. The reset of the extension mechanism of the existing three-dimensional stretch bender is completed by a thin cylinder, the extension cylinder is propped to reset when the extension mechanism extends out, the positions for pushing the extension cylinder to reset are different every time, and the extension cylinder needs to be manually reset by workers, so that the problems of inaccurate reset, time and labor consuming operation and influence on the production efficiency exist.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art and provides a self-resetting extension mechanism for a three-dimensional stretch bender.
The technical scheme adopted by the invention for solving the technical problems is as follows: it is proposed that a self-resetting extension mechanism for a three-dimensional stretch bender comprises:
an outer frame;
the device comprises a power assembly, a first positioning block and a second positioning block, wherein the power assembly is provided with an inner frame and an extension oil cylinder which is rotatably arranged on the inner frame, the inner frame is rotatably arranged on the outer frame, the extension oil cylinder is fixedly provided with the first positioning block, and the inner frame is movably provided with the second positioning block which is mutually nested with the first positioning block;
when the first positioning block and the second positioning block are abutted against each other, the extension oil cylinder can be driven to rotate to a preset position.
In the self-resetting extending mechanism for the three-dimensional stretch bender, the front end of the first positioning block is provided with a positioning concave portion, the front end of the second positioning block is provided with a positioning convex portion, and when the first positioning block and the second positioning block abut against each other, the positioning convex portion can be fixed at the middle position of the positioning concave portion.
In the above self-resetting extending mechanism for a three-dimensional stretch bender, the positioning convex portion includes a first inclined surface and a second inclined surface which are adjacently arranged, the positioning concave portion includes a third inclined surface and a fourth inclined surface which are adjacently arranged, an included angle between the first inclined surface and the second inclined surface is equal to an included angle between the third inclined surface and the fourth inclined surface, and the width of the positioning concave portion is greater than the width of the positioning convex portion.
The self-resetting extension mechanism for the three-dimensional stretch bender is characterized in that the inner frame extends outwards to form a fixed table, a double-head cylinder is arranged on the fixed table, a second positioning block is connected to one end of the double-head cylinder and movably arranged on the fixed table, a first locking block is movably arranged at the other end of the double-head cylinder, a second locking block is arranged on the extension cylinder, and when the extension cylinder rotates to a preset position, the double-head cylinder drives the first locking block and the second locking block to mutually abut against each other to fix the extension cylinder.
In the self-resetting extending mechanism for the three-dimensional stretch bender, the first locking block is provided with the arc-shaped fixing surface, the second locking block is provided with the arc-shaped boss, and when the first locking block and the second locking block are abutted against each other, the arc-shaped fixing surface and the arc-shaped boss are embedded with each other.
In the self-resetting extension mechanism for the three-dimensional stretch bender, the outer frame is inserted with the rotating block and the first driving piece for driving the rotating block to rotate, the other end of the rotating block is fixedly arranged on the inner frame, and when the first driving piece drives the rotating block to rotate, the inner frame can be driven to rotate around the axis direction of the rotating block.
The self-resetting extending mechanism for the three-dimensional stretch bender is characterized in that a connecting block is arranged between the first driving piece and the rotating block, a first limiting face is arranged on the connecting block, a second limiting face is arranged on the outer frame, and the first limiting face and the second limiting face are movably abutted.
In a self-resetting reach-out mechanism for a three-dimensional stretch bender, said power assembly comprising:
the movable mold core is connected to the output end of the extended oil cylinder;
the clamping piece is provided with a fixed positioning seat and a movable positioning seat, the movable positioning seat can be close to or far away from the fixed positioning seat, when the fixed positioning seat and the movable positioning seat are abutted against each other, a clamping space for clamping a workpiece is formed on the clamping piece, the clamping space is used for placing the end part of the workpiece to be subjected to stretch bending, and the movable core is inserted into the clamping space;
the fixed sleeve is connected to the front end of the extended oil cylinder;
the motor is arranged on the side of the fixed sleeve, the output end of the motor is connected with a worm, a worm wheel is arranged on one side, close to the extension oil cylinder, of the clamping piece, and the worm wheel and the worm are meshed with each other.
In the above self-resetting reach mechanism for a three-dimensional stretch bender, the clamping member comprises:
the fixed positioning seat and the movable positioning seat are arranged on the rotating seat, a positioning hole is formed in the middle of the rotating seat, and the positioning hole is communicated with the clamping space;
the second driving piece is arranged on the rotating seat and positioned on the side of the fixed positioning seat, and the movable positioning seat is connected to the output end of the second driving piece.
Compared with the prior art, the automatic resetting device has the advantages that the extension oil cylinder is driven to rotate through mutual abutting between the first positioning block and the second positioning block, the automatic resetting of the extension oil cylinder is realized, and the inner frame can drive the extension oil cylinder to rotate to the preset position around the vertical direction through the rotating arrangement of the inner frame relative to the outer frame, so that the resetting of the extension oil cylinder in the vertical direction is completed.
Drawings
FIG. 1 is a perspective view of a self-resetting reach mechanism for a three-dimensional stretch bender of the present invention;
FIG. 2 is a perspective view of the hidden outer frame of FIG. 1;
FIG. 3 is a perspective view of the first lock block;
FIG. 4 is a perspective view of a second lock block;
FIG. 5 is a perspective view of the inner frame mounted within the outer frame;
fig. 6 is a perspective view of the outer frame;
FIG. 7 is a perspective view of the first driving member, the connecting block and the rotating block when they are mounted;
FIG. 8 is a perspective view of FIG. 1 in another orientation;
FIG. 9 is a perspective view of the movable core mounted on the extended cylinder;
FIG. 10 is a perspective view of the turbine mounted on the output of the motor and intermeshed with the turbine;
FIG. 11 is a perspective view of a second locating block;
FIG. 12 is a perspective view of a first positioning block;
in the figure, 1, an outer frame; 2. an inner frame; 3. extending the oil cylinder; 4. a first positioning block; 5. a second positioning block; 6. a positioning recess; 7. a positioning projection; 8. a fixed table; 9. a double-ended cylinder; 10. a first locking block; 11. a second lock block; 12. an arc-shaped fixing surface; 13. an arc-shaped boss; 14. a first driving member; 15. rotating the block; 16. connecting blocks; 17. a first limiting surface; 18. a second limiting surface; 19. a movable core; 20. fixing the positioning seat; 21. a movable positioning seat; 22. fixing a sleeve; 23. a motor; 24. a worm; 25. a turbine; 26. a rotating seat; 27. positioning holes; 28. a second driving member; 29. a first inclined plane; 30. a second inclined plane; 31. a third inclined plane; 32. a fourth inclined plane.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1 to 12, a self-resetting extension mechanism for a three-dimensional stretch bender according to the present invention includes: an outer frame 1; the device comprises a power assembly, wherein the power assembly is provided with an inner frame 2 and an extension oil cylinder 3 which is rotatably arranged on the inner frame 2, the inner frame 2 is rotatably arranged on an outer frame 1, a first positioning block 4 is fixedly arranged on the extension oil cylinder 3, and a second positioning block 5 which is mutually nested with the first positioning block 4 is movably arranged on the inner frame 2; when the first positioning block 4 and the second positioning block 5 abut against each other, the extension oil cylinder 3 can be driven to rotate to a preset position.
The outer frame 1 is used for connecting the self-resetting extension mechanism in the scheme with a rotating device on the stretch bender, when the stretch bender works, the extension mechanism is arranged at two ends of a workpiece to be bent, the rotating device drives the extension mechanism to rotate so as to achieve three-dimensional extension operation of the workpiece, after the workpiece is completely extended, the second positioning block 5 arranged on the inner frame 2 is inserted into the first positioning block 4, the extension oil cylinder 3 is driven to rotate on the inner frame 2 through interaction force between the second positioning block 5 and the first positioning block 4 until the extension oil cylinder 3 is rotated to a preset position, and then the extension oil cylinder 3 is reset, compared with the traditional manual reset, in the scheme, the extension oil cylinder 3 is driven to rotate through mutual abutting between the first positioning block 4 and the second positioning block 5, automatic reset of the extension oil cylinder 3 is achieved, and the inner frame 2 can drive the extension oil cylinder 3 to rotate around the vertical direction through the rotating arrangement of the inner frame 2 relative to the outer frame 1, and the extension oil cylinder 3 can be driven to rotate around the vertical direction through the outer frame 2 And when the oil cylinder reaches a preset position, resetting of the oil cylinder 3 in the vertical direction is completed.
As shown in fig. 1 and 2, a positioning concave portion 6 is provided at the front end of the first positioning block 4, a positioning convex portion 7 is provided at the front end of the second positioning block 5, and when the first positioning block 4 and the second positioning block 5 abut against each other, the positioning convex portion 7 can be fixed at the middle position of the positioning concave portion 6.
In the process that the first positioning block 4 and the second positioning block 5 abut against each other, because the first positioning block 4 is fixed, the positioning convex part 7 can drive the second positioning block 5 to rotate while sliding along the inner wall of the positioning concave part 6, and the second positioning block 5 can drive the extension oil cylinder 3 to rotate in the horizontal direction when rotating, after the positioning convex part 7 moves to the middle position of the positioning concave part 6, the positioning concave part 6 can fix the positioning convex part 7, and then the extension oil cylinder 3 can not rotate any more after rotating to the preset position.
As shown in fig. 11 and 12, the positioning protrusion 7 includes a first inclined surface 29 and a second inclined surface 30 that are adjacently disposed, the positioning recess 6 includes a third inclined surface 31 and a fourth inclined surface 32 that are adjacently disposed, an included angle between the first inclined surface 29 and the second inclined surface 30 is equal to an included angle between the third inclined surface 31 and the fourth inclined surface 32, and a width of the positioning recess 6 is greater than a width of the positioning protrusion 7.
As shown in fig. 1, when the second positioning block 5 moves toward the first moving block 4, the first inclined surface 29 first contacts with the third inclined surface 31, after the first inclined surface 29 contacts with the third inclined surface 31, the reaction force of the first positioning block 4 on the second positioning block 5 causes the second positioning block to rotate counterclockwise as shown in fig. 1 until the first inclined surface 29 and the third inclined surface 31 overlap each other, the second inclined surface 30 and the fourth inclined surface 32 abut each other, and since the included angle between the first inclined surface 29 and the second inclined surface 30 is equal to the included angle between the third inclined surface 31 and the fourth inclined surface 32, after the first inclined surface 29 and the third inclined surface 31 abut each other and the second inclined surface 30 and the fourth inclined surface 32 abut each other, the second positioning block 5 does not move any more, and the oil cylinder 3 rotates to the preset position.
As shown in fig. 1 and 2, the inner frame 2 extends outward to form a fixed station 8, a double-headed cylinder 9 is arranged on the fixed station 8, the second positioning block 5 is movably arranged on the fixed station 8 at one end of the double-headed cylinder 9, a first locking block 10 is movably arranged at the other end of the double-headed cylinder 9, a second locking block 11 is arranged on the extension cylinder 3, and when the extension cylinder 3 rotates to a preset position, the double-headed cylinder 9 drives the first locking block 10 and the second locking block 11 to abut against each other so as to fix the extension cylinder 3.
The second positioning block 5 can be driven by the double-head cylinder 9 to move on the fixed station 8, and then can drive the second positioning block 5 and the first positioning block 4 to lean against each other or keep away from each other, and the first locking block 10 at the other end of the double-head cylinder 9 and the second locking block 11 on the extension cylinder 3 can lock the extension cylinder 3 after the extension cylinder 3 rotates to a preset position, so that the extension cylinder 3 is prevented from rotating in the inner frame 2 before stretching a workpiece.
As shown in fig. 3 and 4, an arc-shaped fixing surface 12 is arranged on the first locking block 10, an arc-shaped boss 13 is arranged on the second locking block 11, when the first locking block 10 and the second locking block 11 are abutted against each other, the arc-shaped fixing surface 12 and the arc-shaped boss 13 are embedded with each other, and the arc-shaped fixing surface 12 and the hook-shaped boss can realize locking between the first locking block 10 and the second locking block 11, so as to realize locking of the extension oil cylinder 3.
As shown in fig. 5 to 7, a rotating block 15 and a first driving member 14 for driving the rotating block 15 to rotate are inserted on the outer frame 1, and the other end of the rotating block 15 is fixed on the inner frame 2, so that when the first driving member 14 drives the rotating block 15 to rotate, the inner frame 2 can be driven to rotate around the axial direction of the rotating block 15.
First driving piece 14 can drive turning block 15 and rotate on outer frame 1 around its own axis, and turning block 15 can drive during the rotation and rotate along the axis direction of turning block 15 rather than fixed connection's interior frame 2, and interior frame 2 can drive extension hydro-cylinder 3 and rotate to predetermineeing the position in vertical direction when rotating, and then accomplish the reset of extension hydro-cylinder 3 in vertical direction, and is preferred, can prefer cylinder, hydro-cylinder or electro-magnet to use as first driving piece 14.
As a preferable scheme of the present invention, a connecting block 16 is disposed between the first driving element 14 and the rotating block 15, a first limiting surface 17 is disposed on the connecting block 16, a second limiting surface 18 is disposed on the outer frame 1, and the first limiting surface 17 and the second limiting surface 18 movably abut against each other.
The first limiting surface 17 arranged on the connecting block 16 and the second limiting surface 18 arranged on the outer frame 1 can abut against each other after the inner frame 2 rotates to a preset position, so that the inner frame 2 can stop rotating after rotating to a correct position, and the correct reset of the position of the extending oil cylinder 3 is finally realized.
As shown in fig. 8 to 10, the power assembly includes: a movable core 19 connected to an output end of the extension cylinder 3; the clamping piece is provided with a fixed positioning seat 20 and a movable positioning seat 21, the movable positioning seat 21 and the fixed positioning seat 20 can be close to or far away from each other, when the fixed positioning seat 20 and the movable positioning seat 21 are abutted against each other, a clamping space for clamping a workpiece is formed on the clamping piece, the clamping space is used for placing the end part of the workpiece to be bent, and the movable mold core 19 is inserted into the clamping space; a fixing sleeve 22 connected to the front end of the extension cylinder 3; and the motor 23 is arranged on the side of the fixed sleeve 22, the output end of the motor 23 is connected with a worm 24, a worm wheel 25 is arranged on one side of the clamping piece close to the extension oil cylinder 3, and the worm wheel 25 is meshed with the worm 24.
During working, the movable positioning seat 21 moves towards the direction of the fixed positioning seat 20 to abut against the fixed positioning seat 20, the end part of a workpiece to be bent is fixed in the clamping space, then the oil cylinder 3 drives the movable core 19 to be inserted into the workpiece and abut against the inner wall of the workpiece, so that the end part of the workpiece is prevented from being deformed during bending, after the workpiece is bent, the movable core 19 exits from the inside of the workpiece and moves back to an initial position, the movable positioning seat 21 is separated from the fixed positioning seat 20 to loosen the clamping of the workpiece, so that the workpiece after bending can be conveniently and smoothly taken out, in the process of bending the workpiece, the fixing sleeve 22 is used for fixing the motor 23 and can also play a role of preventing dust from being accumulated on the worm gear 24, during working, the motor 23 drives the worm 24 to rotate forward and backward to drive the turbine 25 to rotate clockwise or counterclockwise around the main body frame, and finally, the clamping piece is driven to rotate relative to the extension oil cylinder 3, and the fixed sleeve 22 and the motor 23 arranged at the front end of the extension oil cylinder 3 can properly adjust the angle between the clamping piece and the extension oil cylinder 3 along with the bending direction of the workpiece so as to prevent the end part of the workpiece from being bent unnecessarily in the bending process.
As a preferable aspect of the present invention, the holder includes: the rotating seat 26 is connected to the turbine 25, the fixed positioning seat 20 and the movable positioning seat 21 are both arranged on the rotating seat 26, a positioning hole 27 is arranged in the middle of the rotating seat 26, and the positioning hole 27 is communicated with the clamping space; and a second driving member 28 disposed on the rotating seat 26 and located at the side of the fixed positioning seat 20, wherein the movable positioning seat 21 is connected to the output end of the second driving member 28.
During operation, the second driving part 28 can drive the movable positioning seat 21 and the fixed positioning seat 20 to approach to or separate from each other, so as to clamp and loosen the end of the workpiece, and the positioning hole 27 formed in the middle of the rotating seat 26 and communicated with the clamping space can facilitate the movable core 19 to pass through.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
Moreover, descriptions of the present invention as relating to "first," "second," "a," etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating a number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the described embodiments may be made by those skilled in the art without departing from the scope and spirit of the invention as defined by the accompanying claims.
Claims (9)
1. A self-resetting reach mechanism for a three-dimensional stretch bender, comprising:
an outer frame;
the device comprises a power assembly, a first positioning block and a second positioning block, wherein the power assembly is provided with an inner frame and an extension oil cylinder which is rotatably arranged on the inner frame, the inner frame is rotatably arranged on the outer frame, the extension oil cylinder is fixedly provided with the first positioning block, and the inner frame is movably provided with the second positioning block which is mutually nested with the first positioning block;
when the first positioning block and the second positioning block are abutted against each other, the extension oil cylinder can be driven to rotate to a preset position.
2. The self-resetting mechanism for a three-dimensional stretch bender according to claim 1, wherein the front end of the first positioning block is provided with a positioning concave portion, the front end of the second positioning block is provided with a positioning convex portion, and when the first positioning block and the second positioning block abut against each other, the positioning convex portion can be fixed at the middle position of the positioning concave portion.
3. The self-resetting mechanism for a three-dimensional stretch bender according to claim 2, wherein said positioning protrusion comprises a first inclined surface and a second inclined surface which are adjacently disposed, said positioning recess comprises a third inclined surface and a fourth inclined surface which are adjacently disposed, an included angle between said first inclined surface and said second inclined surface is equal to an included angle between said third inclined surface and said fourth inclined surface, and a width of said positioning recess is greater than a width of said positioning protrusion.
4. The self-resetting extension mechanism for the three-dimensional stretch bender as claimed in claim 1, wherein the inner frame extends outward to form a fixed platform, a double-head cylinder is disposed on the fixed platform, the second positioning block is connected to one end of the double-head cylinder and movably disposed on the fixed platform, a first locking block is movably disposed at the other end of the double-head cylinder, a second locking block is disposed on the extension cylinder, and when the extension cylinder rotates to a preset position, the double-head cylinder drives the first locking block and the second locking block to abut against each other to fix the extension cylinder.
5. The self-resetting mechanism for a three-dimensional stretch bender as claimed in claim 4, wherein said first locking block is provided with an arc-shaped fixing surface, said second locking block is provided with an arc-shaped boss, and when said first locking block and said second locking block abut against each other, said arc-shaped fixing surface and said arc-shaped boss are engaged with each other.
6. The self-resetting mechanism for the three-dimensional stretch bender according to claim 1, wherein a rotating block and a first driving member for driving the rotating block to rotate are inserted in the outer frame, the other end of the rotating block is fixed on the inner frame, and when the first driving member drives the rotating block to rotate, the inner frame can be driven to rotate around the axis direction of the rotating block.
7. The self-resetting mechanism of claim 6, wherein a connecting block is disposed between the first driving member and the rotating block, the connecting block is provided with a first limiting surface, the outer frame is provided with a second limiting surface, and the first limiting surface and the second limiting surface movably abut against each other.
8. The self-resetting reach mechanism for a three-dimensional stretch bender according to claim 1, wherein said power assembly comprises:
the movable mold core is connected to the output end of the extended oil cylinder;
the clamping piece is provided with a fixed positioning seat and a movable positioning seat, the movable positioning seat can be close to or far away from the fixed positioning seat, when the fixed positioning seat and the movable positioning seat are abutted against each other, a clamping space for clamping a workpiece is formed on the clamping piece, the clamping space is used for placing the end part of the workpiece to be subjected to stretch bending, and the movable core is inserted into the clamping space;
the fixed sleeve is connected to the front end of the extended oil cylinder;
the motor is arranged on the side of the fixed sleeve, the output end of the motor is connected with a worm, a worm wheel is arranged on one side, close to the extension oil cylinder, of the clamping piece, and the worm wheel and the worm are meshed with each other.
9. The self-resetting reach mechanism for a three-dimensional stretch bender according to claim 8, wherein said clamp comprises:
the fixed positioning seat and the movable positioning seat are arranged on the rotating seat, a positioning hole is formed in the middle of the rotating seat, and the positioning hole is communicated with the clamping space;
the second driving piece is arranged on the rotating seat and positioned on the side of the fixed positioning seat, and the movable positioning seat is connected to the output end of the second driving piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210422651.4A CN114833231B (en) | 2022-04-21 | 2022-04-21 | Self-resetting extension mechanism for three-dimensional stretch bender |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210422651.4A CN114833231B (en) | 2022-04-21 | 2022-04-21 | Self-resetting extension mechanism for three-dimensional stretch bender |
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| Publication Number | Publication Date |
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| CN114833231A true CN114833231A (en) | 2022-08-02 |
| CN114833231B CN114833231B (en) | 2024-06-11 |
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| CN215699353U (en) * | 2021-07-29 | 2022-02-01 | 平顶山平煤机煤矿机械装备有限公司 | Novel hydraulic support structure spare positioner |
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| CN114833231B (en) | 2024-06-11 |
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