CN214818023U - Automatic centering mechanism for large-stroke heavy-load clamp - Google Patents
Automatic centering mechanism for large-stroke heavy-load clamp Download PDFInfo
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- CN214818023U CN214818023U CN202121152142.1U CN202121152142U CN214818023U CN 214818023 U CN214818023 U CN 214818023U CN 202121152142 U CN202121152142 U CN 202121152142U CN 214818023 U CN214818023 U CN 214818023U
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- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 description 1
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Abstract
本实用新型公开一种用于大行程重载夹具的自动对中机构，其包括单动力机构、框架、左转动杆、中转动杆、右转动杆、左归正板、左仿形块、右归正板和右仿形块。左转动杆两端分别转动连接左归正板和中转动杆；中转动杆还转动连接右转动杆；右转动杆还转动连接右归正板。中转动杆的中部转动连接于框架。左仿形块固定于左归正板；右仿形块固定于右归正板；框架包括导向轴。单动力机构能驱动左归正板沿导向轴移动，通过左转动杆、中转动杆和右转动杆的转动而带动右归正板沿导向轴移动，使得左仿形块和右仿形块移动，以夹取工件。由于中转动杆的中部转动连接于框架，平衡了两侧速度，左仿形块和右仿形块能同步移动，提高了夹取成功率与夹取精度。
The utility model discloses an automatic centering mechanism for a large-stroke heavy-load clamp, which comprises a single power mechanism, a frame, a left rotation rod, a middle rotation rod, a right rotation rod, a left alignment plate, and a left copy block. , the right normalizing plate and the right profiling block. The two ends of the left rotation rod are respectively connected to the left correction plate and the middle rotation rod; the middle rotation rod also rotates to connect the right rotation rod; the right rotation rod also rotates to connect to the right correction board. The middle part of the middle rotating rod is rotatably connected to the frame. The left profiling block is fixed on the left correcting plate; the right profiling block is fixed on the right correcting plate; the frame includes a guide shaft. The single power mechanism can drive the left correction plate to move along the guide shaft, and drive the right correction plate to move along the guide shaft through the rotation of the left rotation rod, the middle rotation rod and the right rotation rod, so that the left copy block and the right copy block are moved along the guide shaft. The block moves to grip the workpiece. Because the middle part of the middle rotating rod is connected to the frame in rotation, the speed of the two sides is balanced, the left copying block and the right copying block can move synchronously, which improves the success rate of clamping and the precision of clamping.
Description
Technical Field
The utility model relates to a large-scale anchor clamps technical field, concretely relates to automatic centering mechanism for large stroke heavy load anchor clamps.
Background
The large-scale clamp mainly comprises clamping jaws, a profiling block and a pneumatic finger mounting seat, and the clamping jaws of the conventional large-scale clamp are generally parallel clamping jaws and Y-shaped clamping jaws. In the use of large-scale anchor clamps, the clamping jaw stroke can appear usually not enough, problem that can not automatic centering, especially not centering leads to anchor clamps can not snatch the problem serious, and the mode that adopts usually replaces single cylinder for the drive of both sides hydraulic stem, and the work flow has two kinds:
(1) and (3) driving a bidirectional hydraulic cylinder: a hydraulic cylinder fixed on the rack is used as a driving piece, when the hydraulic cylinder extends out, the profiling block moves to the center along a guide shaft on the rack, when the hydraulic rod reaches the limit position, the workpiece is compacted by profiling, and clamping is completed;
(2) three-jaw chuck drive: the three-direction hydraulic cylinders which are uniformly distributed on the rack are driven, and the hydraulic cylinders simultaneously extend out to the center to drive the arc-shaped profiling blocks connected with the hydraulic cylinders to clamp the workpiece to the center.
The prior art has the following disadvantages:
1) the clamp mainly clamps large parts, the effective stroke is small, and the clamping amount of workpieces is small;
2) structurally, the clamp and the rack are integrally connected, so that the whole structure is large and automatic centering cannot be realized;
3) the clamp is driven by the hydraulic cylinders, the multiple hydraulic cylinders are asynchronous, clamping is not accurate, and the service life of the hydraulic cylinders is short.
SUMMERY OF THE UTILITY MODEL
In view of the above technical problem, the utility model aims at providing a can automatic centering, effective stroke length, can accurate clamp get the work piece and be single power drive's anchor clamps.
The utility model adopts the following technical scheme: an automatic centering mechanism for a large-stroke heavy-load clamp comprises a single power mechanism, a frame, a left rotating rod, a middle rotating rod, a right rotating rod, a left centering plate, a left contour block, a right centering plate and a right contour block. One end of the left rotating rod is rotatably connected to the left correcting plate, and the other end of the left rotating rod is rotatably connected to one end of the middle rotating rod; the other end of the middle rotating rod is rotatably connected to one end of the right rotating rod; the other end of the right rotating rod is rotatably connected to the right correcting plate; the middle part of the middle transfer rod is rotatably connected with the frame. The left copying block is fixedly connected to the left correcting plate; the right copying block is fixedly connected to the right correcting plate; the frame includes the guiding axle, the left side is just board with right the board all slidable mounting in on the guiding axle. The single power mechanism is arranged on the frame, can drive the left correcting plate to move along the guide shaft, and drives the right correcting plate to move along the guide shaft through the rotation of the left rotating rod, the middle rotating rod and the right rotating rod, so that the left profiling block and the right profiling block move in opposite directions or move away from each other, and a workpiece is clamped or released; the rotation tracks of the left rotating rod, the middle rotating rod and the right rotating rod are located on the same plane.
As a further improvement of the automatic centering mechanism for the large-stroke heavy-load clamp of the utility model, the frame further comprises a left side plate, a connecting rod and a right side plate; the two ends of the connecting rod are respectively and fixedly connected with the left side plate and the right side plate; two ends of the guide shaft are respectively and fixedly connected with the left side plate and the right side plate; the left correcting plate and the right correcting plate are positioned between the left side plate and the right side plate; the middle part of the middle transfer rod is rotationally connected with the connecting rod; the single power mechanism is fixed on the left side plate, and the output end of the single power mechanism is connected with the left correcting plate.
As a further improvement of the automatic centering mechanism for the large-stroke heavy-load clamp of the present invention, the frame includes two parallel guide shafts, and both ends of each guide shaft are respectively fixed to the left side plate and the right side plate; the left correcting plate and the right correcting plate are both arranged on the two guide shafts in a sliding mode.
As a further improvement of the automatic centering mechanism for the large-stroke heavy-load clamp, the middle part of the middle rotating rod is rotationally connected to the middle part of the connecting rod through a middle rotating bolt; the left end of the left rotating rod is rotatably connected to the left correcting plate through a left rotating bolt; the right end of the right rotating rod is rotatably connected with the right correcting plate through a right rotating bolt.
As a further improvement of the automatic centering mechanism for the large-stroke heavy-load clamp of the present invention, the left centering plate, the right centering plate, the left side plate and the right side plate are parallel to each other; the connecting rod and the guide shaft are parallel to each other; the connecting rod is perpendicular to the left correcting plate; the connecting rod is arranged at the upper ends of the left correcting plate and the right correcting plate; the left copying block is fixed at the lower end of the left correcting plate, and the right copying block is fixed at the lower end of the right correcting plate.
As the utility model discloses a further improvement that is used for automatic centering mechanism of big stroke heavy load anchor clamps, single power mechanism includes the cylinder, the cylinder is fixed in the lateral surface of left side board, the output shaft contactless of cylinder passes the left side board connect in the left side is just managed.
As the utility model discloses a further improvement of an automatic centering mechanism for big stroke heavy load anchor clamps, the output shaft of cylinder through unsteady articulate in the left side is just returned the board.
As the utility model discloses a further improvement of an automatic centering mechanism for big stroke heavy load anchor clamps, automatic centering mechanism still includes cushion block and heavy load carrier liquid pressure buffer, and its mounting means is: the buffer cushion block is fixed on the left contour block, and the heavy-load carrier hydraulic buffer is fixed on the right contour block; or the buffer cushion block is fixed on the right contour block, and the heavy-load carrier hydraulic buffer is fixed on the left contour block. When the left profiling block and the right profiling block move oppositely to clamp a workpiece, the heavy-load carrier hydraulic buffer is abutted to the buffer cushion block, and the impact force of the left profiling block and the right profiling block approaching to each other is relieved.
As the utility model discloses a further improvement of an automatic centering mechanism for large stroke heavy load anchor clamps, automatic centering mechanism includes the combination of two sets of cushion blocks and heavy load carrier hydraulic buffer, installs respectively left side profile block with the both ends of the contact line of right side profile block.
As the utility model discloses a further improvement that is used for automatic centering mechanism of big stroke heavy load anchor clamps, a left side shape piece with the front end of right side shape piece is the opening of V-arrangement, after each other contacting, forms the rhombus space for the work piece is got to the clamp.
The utility model discloses an automatic centering mechanism for big stroke heavy load anchor clamps's beneficial effect is:
1) the single power mechanism can drive the left correcting plate to move along the guide shaft and drive the right correcting plate to move along the guide shaft through the rotation of the left rotating rod, the middle rotating rod and the right rotating rod, and the speed of two sides is balanced due to the fact that the middle of the middle rotating rod is rotatably connected to the frame, automatic centering is achieved, the left profiling block and the right profiling block can move synchronously, a workpiece can be stably clamped, and the purpose of improving the clamping success rate and the clamping precision is achieved.
2) The clamping of two side power sources is changed into the clamping of single side driving, and the effective driving stroke of the single power source is twice of the original one.
3) Compact structure, easy and other station cooperation installations.
Drawings
Fig. 1 is a schematic structural diagram of an automatic centering mechanism for a large-stroke heavy-duty clamp according to an embodiment of the present invention.
Fig. 2 is a plan view of the automatic centering mechanism for a large-stroke heavy-duty clamp according to an embodiment of the present invention in a home position state ready to clamp a workpiece.
Fig. 3 is a top view of the automatic centering mechanism for a large-stroke heavy-duty clamp according to an embodiment of the present invention clamping a workpiece.
Fig. 4 is a front view schematic diagram of an automatic centering mechanism for a large-stroke heavy-duty clamp according to an embodiment of the present invention.
Reference numerals: the device comprises a left rotating rod 1, a middle rotating rod 2, a right rotating rod 3, a left correcting plate 4, a left contour block 5, a right correcting plate 6, a right contour block 7, a left side plate 8, a connecting rod 9, a right side plate 10, a guide shaft 11, a middle rotating bolt 12, a strip-shaped groove 13, an air cylinder 14, a mounting seat 15, a floating joint 16, a buffer cushion block 17, a heavy load carrier hydraulic buffer 18 and a hub 19.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention will be combined below to clearly and completely describe the technical solutions of the embodiments of the present invention, and it is obvious that the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but only represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1, an automatic centering mechanism for a large-stroke heavy-load clamp comprises a single power mechanism, a frame, a left rotating rod 1, a middle rotating rod 2, a right rotating rod 3, a left correcting plate 4, a left contour block 5, a right correcting plate 6 and a right contour block 7.
One end of the left rotating rod 1 is rotatably connected to the middle position above the left correcting plate 4, and the other end of the left rotating rod 1 is rotatably connected to one end of the middle rotating rod 2. The other end of the middle rotating rod 2 is rotatably connected with one end of the right rotating rod 3. The other end of the right rotating rod 3 is rotatably connected to the middle position above the right correcting plate 6.
The frame comprises a left side plate 8, a connecting rod 9, a right side plate 10 and two parallel guide shafts 11. The two ends of the connecting rod 9 are respectively fixedly connected to the upper middle parts of the left side plate 8 and the right side plate 10, which is a preferred embodiment, and may be connected to other embodiments not in the middle.
Two ends of each guide shaft 11 are respectively and fixedly connected to the side surfaces of the left side plate 8 and the right side plate 10. The left correcting plate 4 and the right correcting plate 6 are both arranged on the two guide shafts 11 in a sliding manner. The left and right correcting plates 4 and 6 are located between the left and right side plates 8 and 10.
The middle part of the middle transfer rod 2 is rotationally connected with the middle part of the connecting rod 9 through a middle transfer bolt 12, so that the middle transfer rod 2 can rotate in a balanced manner, and the left copying block 5 and the right copying block 7 can be automatically and accurately aligned. The connecting rod 9 is also provided with bar-shaped grooves 13 on both sides of the middle rotating bolt 12. The left end of the left rotating rod 1 is rotatably connected with the middle of the upper end of the left correcting plate 4 through a left rotating bolt, and the left rotating bolt can be inserted into the left strip-shaped groove 13, can slide along the strip-shaped groove 13 and also can be not inserted into the left strip-shaped groove 13. The right end of the right rotating rod 3 is rotatably connected with the right correcting plate 6 through a right rotating bolt, the right rotating bolt can be inserted into the right strip-shaped groove 13 and can slide along the strip-shaped groove 13, the right rotating bolt does not need to be inserted into the left strip-shaped groove 13, and the operation of the device is not influenced.
The left correcting plate 4, the right correcting plate 6, the left side plate 8 and the right side plate 10 are parallel to each other. The connecting rod 9 and the guide shaft 11 are parallel to each other. The connecting rod 9 is perpendicular to the left correcting plate 4. The connecting rod 9 is installed at the upper ends of the left and right centering plates 4 and 6. The left copying block 5 is fixed at the lower end of the left correcting plate 4, and the right copying block 7 is fixed at the lower end of the right correcting plate 6.
The single power mechanism comprises a cylinder 14, the cylinder 14 is fixed on a mounting seat 15, the mounting seat 15 is fixed on the outer side surface of the left side plate 8, and an output shaft of the cylinder 14 penetrates through the mounting seat 15 and the left side plate 8 in a non-contact mode and is connected to the left correcting plate 4 through a floating joint 16. The cylinder 14 can drive the left correcting plate 4 to move along the guide shaft 11, and the right correcting plate 6 is driven to move along the guide shaft 11 through the rotation of the left rotating rod 1, the middle rotating rod 2 and the right rotating rod 3, so that the left copying block 5 and the right copying block 7 move in opposite directions or deviate from each other to clamp or release a workpiece. The rotation tracks of the left rotating rod 1, the middle rotating rod 2 and the right rotating rod 3 are located on the same plane or the planes which are attached to each other.
The automatic centering mechanism also comprises a combination of two groups of cushion blocks 17 and a heavy load carrier hydraulic buffer 18 which are respectively arranged at two ends of a contact line of the left contour block 5 and the right contour block 7. The specific installation mode can be as follows: the buffer cushion block 17 is fixed on the left copying block 5, and the heavy load carrier hydraulic buffer 18 is fixed on the right copying block 7, as shown in fig. 1; or the cushion block 17 is fixed on the right copying block 7, and the heavy-load carrier hydraulic buffer 18 is fixed on the left copying block 5. When the left profiling block 5 and the right profiling block 7 move oppositely to clamp a workpiece, the heavy-load carrier hydraulic buffer 18 abuts against the buffer cushion block 17, and the impact force of the mutual approaching of the left profiling block 5 and the right profiling block 7 is relieved.
The front ends of the left profiling block 5 and the right profiling block 7 can be V-shaped openings, and after the left profiling block and the right profiling block are contacted with each other, a rhombic space is formed and is used for clamping a workpiece. The front ends of the left profile modeling block 5 and the right profile modeling block 7 can also be arc-shaped openings, and cushion pads can be arranged at the openings to clamp workpieces and avoid damaging the workpieces. The hub 19 in fig. 1 is the workpiece to be gripped.
The utility model discloses an operating procedure that is used for automatic centering mechanism of big stroke heavy load anchor clamps as follows.
As shown in fig. 2, it is an original view of the automatic centering mechanism for clamping a workpiece, wherein when the workpiece reaches a designated position and a power switch is pressed, a three-position five-way solenoid valve functions to change from exhaust to intake, and an output shaft of a cylinder 14 is pushed by gas to extend to clamp the workpiece. The three-position five-way electromagnetic valve is selected because when the air compressor is powered off, the electromagnetic valve keeps middle-position gas from leaking, the clamping position of a workpiece is kept, and accidents are prevented.
As shown in figure 3, the output shaft of the air cylinder 14 is pushed out rightwards, the air cylinder 14 pushes the left correcting plate 4 to move rightwards under the guiding action of the guide rod 11, the combination of the left rotating rod 1, the middle rotating rod 2 and the right rotating rod 3 rotates anticlockwise under the action of the pushing force, the left copying block 5 and the right copying block 7 are close to each other to clamp the left copying block and the right copying block, the middle rotating rod 2 balances the speeds of two sides through a central fulcrum, the distance between the two copying blocks and the central axis is consistent, and the purposes of improving the clamping success rate and the clamping precision are achieved.
As shown in fig. 4, in order to correctly complete the process, when the left and right contour blocks 5 and 7 are clamped, the impact loads at the left and right ends are large, and the mass of the contour block is multiplied by the acceleration, and the common hydraulic buffer cannot meet the requirement, the heavy load is selected to carry the hydraulic buffer 18, and the buffer cushion block 17 is selected at the other end to reduce the buffer force as much as possible, so as to reduce the impact force on the cylinder 14 and prolong the service life of the cylinder 14.
While the above description is intended to represent only some embodiments, rather than all embodiments of the present invention, the detailed description of the embodiments is not intended to limit the scope of the invention, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121152142.1U CN214818023U (en) | 2021-05-27 | 2021-05-27 | Automatic centering mechanism for large-stroke heavy-load clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121152142.1U CN214818023U (en) | 2021-05-27 | 2021-05-27 | Automatic centering mechanism for large-stroke heavy-load clamp |
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| CN214818023U true CN214818023U (en) | 2021-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121152142.1U Active CN214818023U (en) | 2021-05-27 | 2021-05-27 | Automatic centering mechanism for large-stroke heavy-load clamp |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113199424A (en) * | 2021-05-27 | 2021-08-03 | 三明学院 | Automatic centering mechanism for large-stroke heavy-load clamp |
| CN120736225A (en) * | 2025-08-18 | 2025-10-03 | 成都思越智能装备股份有限公司 | Clamping centering mechanism based on screw rod driving |
-
2021
- 2021-05-27 CN CN202121152142.1U patent/CN214818023U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113199424A (en) * | 2021-05-27 | 2021-08-03 | 三明学院 | Automatic centering mechanism for large-stroke heavy-load clamp |
| CN113199424B (en) * | 2021-05-27 | 2024-08-27 | 三明学院 | An automatic centering mechanism for large-stroke and heavy-load fixtures |
| CN120736225A (en) * | 2025-08-18 | 2025-10-03 | 成都思越智能装备股份有限公司 | Clamping centering mechanism based on screw rod driving |
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