CN110355704B - Automatic self-locking clamp for sensing object by detecting current change of motor - Google Patents
Automatic self-locking clamp for sensing object by detecting current change of motor Download PDFInfo
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- CN110355704B CN110355704B CN201910744065.XA CN201910744065A CN110355704B CN 110355704 B CN110355704 B CN 110355704B CN 201910744065 A CN201910744065 A CN 201910744065A CN 110355704 B CN110355704 B CN 110355704B
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- 230000008859 change Effects 0.000 title claims abstract description 19
- 238000013461 design Methods 0.000 claims abstract description 12
- 230000003578 releasing effect Effects 0.000 claims abstract description 8
- 238000012544 monitoring process Methods 0.000 claims description 14
- 230000009471 action Effects 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 7
- 239000000306 component Substances 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 239000008358 core component Substances 0.000 claims description 3
- 229910001004 magnetic alloy Inorganic materials 0.000 claims description 3
- 230000008447 perception Effects 0.000 claims 1
- 210000002105 tongue Anatomy 0.000 description 21
- 108010066114 cabin-2 Proteins 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 108010066057 cabin-1 Proteins 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000012545 processing Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
- B25B11/002—Magnetic work holders
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
- G01R19/16576—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing DC or AC voltage with one threshold
Abstract
The invention discloses an automatic self-locking clamp for sensing an object by detecting the current change of a motor, which comprises an actuator cabin, a controller cabin and electric wires, wherein the electric wires are divided into two groups, one group is connected to a mains supply end as a power wire, and the other group is connected to a main machine end of a production line as a control wire; mechanical and electronic components are arranged in the actuator cabin and used for sensing and completing clamping and releasing actions on a workpiece; and a motor, control equipment and a power supply are arranged in the controller cabin and are used for providing power for and controlling the automatic self-locking clamp. The invention provides an automatic clamping platform for various automatic equipment, and has the characteristics of mechanical and electronic integrated design, and has the advantages of strong universality, low cost and high reliability.
Description
Technical Field
The invention belongs to the technical field of mechanical equipment, relates to the design of a clamp, and particularly relates to an automatic self-locking clamp for sensing an object by detecting the current change of a motor.
Background
Along with the continuous development of technology, the production scale is larger and larger, the workpiece yield of the current factory processing is generally larger, and a plurality of factories can process the workpiece by adopting automatic equipment, so that the workpiece needs to be fixed in the processing process, and the automatic self-locking clamp is not needed. Not only is the processing link limited, but also the quality part adopts automation equipment when checking the workpiece along with the continuous improvement of the factory automation level. Therefore, the automatic self-locking clamp has great demand on the market as a basic component of automatic production lines such as automatic production, automatic detection and the like.
In the prior art, the design of the clamp is mostly a product designed by taking mechanical design as a guide, and the clamp is taken as an important component of an automation device, but the automation degree of the clamp is low. This directly results in the factory having to develop it a second time when using the jig, with the consequence that it is also extremely inconvenient to use later in the case of increased costs. In addition, the traditional clamp judges whether to clamp the workpiece or not by manually setting a fixed motor stroke or adding a stroke switch, the judging method is passive, and because additional elements are added, the reliability is reduced, the stroke of the traditional clamp needs to be manually adjusted when different workpieces are faced, the applicability is poor, the efficiency is low, and even the reliability of the whole automatic production line of a factory can be directly influenced. In addition, the current clamp has the common problem of poor applicability caused by separation of mechanical and electronic designs.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the automatic self-locking clamp for sensing the object by detecting the current change of the motor, provides an automatic clamping platform for various automatic equipment, and has the characteristics of mechanical and electronic integrated design, and has the advantages of strong universality, low cost and high reliability.
For this purpose, the invention adopts the following technical scheme:
the automatic self-locking clamp for sensing the object by detecting the current change of the motor comprises an actuator cabin, a controller cabin and electric wires, wherein the electric wires are divided into two groups, one group is connected to a mains supply end as a power wire, and the other group is connected to a pipeline host end as a control wire; mechanical and electronic components are arranged in the actuator cabin and used for sensing and completing clamping and releasing actions on a workpiece; and a motor, control equipment and a power supply are arranged in the controller cabin and are used for providing power for and controlling the automatic self-locking clamp.
Preferably, the automatic self-locking clamp adopts a modularized design, and the actuator cabin and the controller cabin are combined into a whole; the actuator cabin is responsible for sensing the workpiece and completing clamping and releasing operations on the workpiece; the controller cabin is responsible for sending a level signal to the pipeline host end and receiving the level signal sent by the pipeline host end, so that the execution part of the automatic self-locking clamp is controlled to complete corresponding operation according to a signal instruction.
Preferably, the actuator cabin mainly comprises a cabin body, a fixing clamp, a guide rail, a connecting rod, a rack, a pull rod and a push rod; the guide rail and the rack are respectively divided into two groups, the fixing clamp is divided into a main fixing clamp and a secondary fixing clamp, the rack is arranged at two sides of the main fixing clamp, and the guide rail is arranged at two sides of the secondary fixing clamp; the main fixing clamp and the auxiliary fixing clamp are connected with the pull rod through a connecting rod; the hatch cover mainly comprises a cover plate, electrodes and positioning pins, wherein the electrodes are two thin metal plates with insulating layers covered on the bottom surfaces, and the thin metal plates are symmetrically arranged by taking the positioning pins as centers.
Preferably, a linear motor and a controller are arranged in the controller cabin; one side of the main fixing clamp is connected to the linear motor through a push rod, and the main fixing clamp and the auxiliary fixing clamp move in opposite directions simultaneously in the axial direction under the action of the linear motor; the electrode metal plate is connected with the controller by a wire to form an electrode loop.
Preferably, when a workpiece is placed on the cover plate by the positioning pin, the workpiece presses the two electrodes simultaneously to connect the two electrodes, and the controller judges whether the workpiece is placed on the cover plate.
Preferably, the main fixing clamp and the auxiliary fixing clamp are different from each other only in bottom structure and each comprises a fixing clamp body; the secondary fixing clamp is inverted I-shaped, two ends of the bottom are provided with convex sliding blocks for modeling, the convex sliding blocks are matched with the inner concave surfaces of the guide rails, and the sliding blocks can freely slide in the inner concave surfaces; the main fixing clamp is a core component of the automatic self-locking clamp and is in an inverted I shape, two round holes containing sleeves are formed in the two ends of the bottom, coils are mounted on the inner walls of the round holes, and the two ends of the coils are connected to the controller through leads; the sleeve is sleeved with a pressure spring and a hollow cylindrical magnet, the top of the magnet is provided with a clamping tongue, the clamping tongue is exposed out of the round hole, and the shape of the clamping tongue is matched with the tooth shape of the rack.
Preferably, the clip is movable toward the center when the latch ramp contacts the rack ramp, and is locked when the latch tab contacts the rack tab.
Preferably, the fixing clamp body and the clamping tongue are both made of non-magnetic alloy; after the coil is electrified, the magnet is attracted into the hole under the action of magnetic force, at the moment, the clamping tongues are all retracted into the round holes, and after the coil is powered off, the magnet is jacked up by the pressure spring to enable the clamping tongues to be exposed out of the round holes, so that the self-locking and unlocking operation of the fixing clamp is realized.
Preferably, a current monitoring circuit is arranged in the controller and is used for monitoring the state of an electrode loop and judging whether the clamping operation is finished or not; the current monitoring circuit monitors the current flowing through the linear motor in real time after the equipment is started. The current monitoring circuit inside the controller is a core part for the controller to judge whether the clamping operation is completed or not, and the purpose of the current monitoring circuit is to optimize the clamping judging mechanism of the traditional clamp. When the workpiece is placed on the cover plate and is connected with the electrode, the controller judges that the workpiece is present at the moment, the controller immediately drives the linear motor push rod to extend, the push rod drives the main fixing clamp and the auxiliary fixing clamp to move in opposite directions, the load of the direct current motor can rise instantly after the main fixing clamp touches the workpiece, the current can increase, when the current monitoring circuit detects that the current increases to a set certain threshold value, the controller judges that the workpiece is clamped, at the moment, the controller stops supplying power to the direct current motor, and the equipment realizes self-locking operation under the cooperation of the mechanical parts.
Preferably, the control device in the controller cabin communicates with the pipeline host end through a bus to complete instruction transmission.
The equipment disclosed by the invention is completely in a modularized design, so that the equipment is convenient to maintain and replace in the later period. After the equipment is fixed on the working platform and is powered on, the whole equipment is connected with the assembly line host through a data line, and the control of the host on the automatic self-locking clamp can be realized. The upper surface of the fixture is provided with an electrode for sensing whether the workpiece is placed on the equipment. The control cabin is internally provided with a linear motor, a controller and a direct current power supply, wherein the linear motor is used for pushing the two fixing clamps to move in opposite directions at the same time. The controller is used for monitoring the state of the electrode loop and the current flowing through the linear motor and controlling whether the coil in the fixing clamp is electrified or not. The direct current power supply is responsible for converting 380V industrial power into direct current 12V to provide electric energy for the whole equipment.
Compared with the prior art, the invention has the beneficial effects that:
(1) The automatic self-locking clamp provided by the invention has the characteristics of mechanical and electronic integrated design, and is high in universality, low in cost and high in reliability.
(2) The whole equipment adopts a modularized design, and is convenient to maintain in the later period.
(3) The automatic degree is high, secondary development is not needed, and the use is convenient.
Drawings
Fig. 1 is a schematic diagram of the external structure of an automatic self-locking clamp for sensing an object by detecting the current change of a motor.
Fig. 2 is a schematic diagram of the internal structure of an automatic self-locking clamp for sensing an object by detecting the current change of a motor.
Fig. 3 is a front view of a main fixing clamp in an automatic self-locking clamp for sensing an object by detecting a change of a motor current.
Fig. 4 is a side view of the primary retention clip.
Fig. 5 is a schematic view of the internal structure of the main fixing clip.
FIG. 6 is a schematic illustration of the relationship of the tongue and rack in the main clamp.
Fig. 7 is a front view from the fixing clip.
Fig. 8 is a side view from the fixation clamp.
Fig. 9 is a schematic structural view of the cover plate.
Reference numerals illustrate: 1. an actuator compartment; 2. a controller cabin; 3. an electric wire; 4. a cabin body; 5. a fixing clamp; 6. a guide rail; 7. a connecting rod; 8. a rack; 9. a pull rod; 10. a push rod; 11. a linear motor; 12. a controller; 13. a fixing clamp body; 14. a clamping tongue; 15. a coil; 16. a sleeve; 17. a pressure spring; 18. a magnet; 19. an electrode; 20. a positioning pin; 21. a cover plate; 5-1, a main fixing clamp; 5-2, a slave fixing clamp.
Detailed Description
The device mainly realizes clamping and releasing operation on a workpiece, and the core content of the description of the invention is that whether the workpiece is clamped or not is judged according to the current, self-locking is realized through the mechanical structure, unlocking operation is completed through the matching of a coil and a magnet, whether the workpiece is placed on the device or not is judged through an electrode, and communication is realized between a controller and a host computer to complete instruction transmission. The dimensional variations of the device outside the core are not limiting to the invention nor do they affect the description of the embodiments of the invention.
The present invention will be described in detail below with reference to the drawings and the specific embodiments thereof, which are for explanation of the present invention only, but not for limitation of the present invention.
As shown in fig. 1, the invention discloses an automatic self-locking clamp for sensing an object by detecting the current change of a motor, which comprises an actuator cabin 1, a controller cabin 2 and an electric wire 3, wherein the electric wire 3 is divided into two groups, one group is connected to a mains supply end as a power wire, and the other group is connected to a pipeline host end as a control wire; mechanical and electronic components are arranged in the actuator cabin 1 and used for sensing and completing clamping and releasing actions on a workpiece; the controller cabin 2 is internally provided with a motor, control equipment and a power supply, and is used for providing power for and controlling the automatic self-locking clamp.
Specifically, the automatic self-locking clamp adopts a modularized design, and the actuator cabin 1 and the controller cabin 2 are combined into a whole; the actuator cabin 1 is responsible for sensing a workpiece and completing clamping and releasing operations on the workpiece; the controller cabin 2 is responsible for sending a level signal to the main machine end of the pipeline and receiving the level signal sent by the main machine end of the pipeline, so that the execution part of the automatic self-locking clamp is controlled to complete corresponding operation according to a signal instruction.
Specifically, as shown in fig. 2, the actuator cabin 1 mainly comprises a cabin and a cabin cover, wherein the cabin mainly comprises a cabin body 4, a fixing clamp 5, a guide rail 6, a connecting rod 7, a rack 8, a pull rod 9 and a push rod 10; the guide rail 6 and the rack 8 are respectively divided into two groups, the fixing clamp 5 is divided into a main fixing clamp 5-1 and a secondary fixing clamp 5-2, the rack 8 is arranged on two sides of the main fixing clamp 5-1, and the guide rail 6 is arranged on two sides of the secondary fixing clamp 5-2; the main fixing clamp 5-1 and the auxiliary fixing clamp 5-2 are connected with a pull rod 9 through a connecting rod 7; the hatch cover mainly comprises a cover plate 21, an electrode 19 and a positioning pin 20, wherein the electrode 19 is formed by two thin metal plates with insulating layers covered on the bottom surfaces and symmetrically arranged by taking the positioning pin 20 as a center; as shown in fig. 9.
Specifically, a linear motor 11 and a controller 12 are arranged in the controller cabin 2; one side of the main fixing clamp 5-1 is connected to a linear motor 12 through a push rod 10, and the main fixing clamp 5-1 and the auxiliary fixing clamp 5-2 move in opposite directions simultaneously in the axial direction under the action of the linear motor 12; the electrode 19 metal plate is connected with the controller 12 by a wire to form an electrode loop.
When a workpiece is placed on the cover plate 21 by the positioning pin 20, the workpiece presses the two electrodes 19 at the same time, i.e., the two electrodes 19 are turned on, and the controller 12 determines whether the workpiece is placed on the cover plate 21.
Specifically, as shown in fig. 3-8, the master fixing clip 5-1 and the slave fixing clip 5-2 are different only in bottom structure, and each include a fixing clip body 13; the secondary fixing clamp 5-2 is in an inverted I shape, two ends of the bottom are provided with convex sliding blocks in a shape for matching with the inner concave surface of the guide rail 6, and the sliding blocks can freely slide in the inner concave surface; the main fixing clamp 5-1 is a core component of an automatic self-locking clamp, is in an inverted I shape, two round holes with sleeves 16 are formed in the two ends of the bottom, a coil 15 is mounted on the inner wall of each round hole, and the two ends of the coil 15 are connected to the controller 12 through wires; the sleeve 16 is sleeved with a pressure spring 17 and a hollow cylindrical magnet 18, the top of the magnet 18 is provided with a clamping tongue 14, the clamping tongue 14 is exposed out of the round hole, and the shape of the clamping tongue 14 is matched with the tooth shape of the rack 8.
Specifically, the fixing clip 5 is movable toward the center when the inclined surface of the tongue 14 contacts with the inclined surface of the rack 8, and the fixing clip 5 is locked when the vertical surface of the tongue 14 contacts with the vertical surface of the rack 8, as shown in fig. 6.
Specifically, the fixing clip body 13 and the clamping tongue 14 are both made of non-magnetic alloy; after the coil 15 is electrified, the magnet 18 is attracted into the hole under the action of magnetic force, at the moment, the clamping tongues 14 are all retracted into the round hole, and after the coil 15 is powered off, the magnet 18 is jacked up by the pressure spring 17 to enable the clamping tongues 14 to be exposed out of the round hole, so that the self-locking and unlocking operation of the fixing clamp 5 is realized.
A current monitoring circuit is arranged in the controller 12 and is used for monitoring the state of an electrode loop and judging whether the clamping operation is completed or not; the current monitoring circuit monitors the current flowing through the linear motor 11 in real time after the equipment is started.
The control equipment in the controller cabin 2 is communicated with the pipeline host end through a bus to complete instruction transmission.
Examples
An automatic self-locking clamp for sensing an object by detecting the current change of a motor is shown in fig. 1-9, and the working process is as follows:
the automatic self-locking clamp equipment is firmly arranged on the workbench, a power line is connected, and after the signal line is connected with the host machine to establish communication, the equipment is immediately in a standby state. In the standby state, the two electrodes 19 are energized, the linear motor 11 is reset, and the two fixing clamps 5 are at the maximum opening at this time.
When a certain workpiece is placed on the equipment cover plate 21, the workpiece connects the two electrodes 19 to form a loop, and the controller 12 judges that the workpiece arrives at the moment and sends a level signal to the pipeline host computer to report the state. After the host receives the signal, the host issues a command to the controller 12 to activate the device to begin the clamping action. At this time, the controller 12 drives the push rod 10 of the linear motor 11 to extend to push the main fixing clamp 5-1 to move towards the center, and the auxiliary fixing clamp 5-2 also moves towards the center under the action of the connecting rod 7 and the pull rod 9. The coil 15 at the lower end of the main fixing clamp 5-1 is in a non-energized state, the clamping tongue 14 is exposed out of the round hole, and because the main fixing clamp 5-1 moves towards the center, the clamping tongue 14 contacts with the inclined surface of each tooth of the rack 8, and the clamping tongue 14 can reciprocate along the direction of the sleeve 16 under the action of the pressure spring 17, so that the main fixing clamp 5-1 and the auxiliary fixing clamp 5-2 can always move towards the center simultaneously.
When the main fixing clamp 5-1 and the auxiliary fixing clamp 5-2 touch the workpiece, the real-time power of the linear motor 11 is instantaneously increased due to the blocking of the workpiece to the fixing clamp 5, the current monitoring circuit in the controller 12 detects the current increasing process, when the current value is increased to a preset threshold value, the controller 12 immediately judges that the workpiece is clamped and cuts off the power supply of the linear motor 11, and at the moment, the clamping tongue 14 at the bottom end of the main fixing clamp 5-1 and the vertical surface of a certain tooth of the rack 8 are contacted with each other due to the reverse acting force of the workpiece to the fixing clamp 5, so that the main fixing clamp 5-1 and the auxiliary fixing clamp 5-2 cannot retreat, and the clamping and self-locking operation of the device is finished. The controller 12 sends a level signal to the host to tell the host that the workpiece has been clamped for self-locking.
After the host controls other devices of the automatic assembly line to perform corresponding operations on the workpiece, the host sends instructions to the controller 12 of the device to instruct the device to loosen the workpiece. When the controller 12 receives the instruction, the coil 15 at the bottom of the main fixing clamp 5-1 is electrified, the generated magnetic field and the magnet 18 have different magnetic poles so as to attract the magnet 18 inwards, and the magnet 18 moves inwards so that the clamping tongue 14 is fully retracted into the round hole. After the latch 14 is completely retracted into the circular hole (the process is about 200 ms), the controller 12 drives the push rod 10 of the linear motor 11 to withdraw, so as to drive the main fixing clamp 5-1 and the fixing clamp 5-2 to move to two sides until reaching a preset position, and the equipment finishes unlocking and loosening operations at the moment. After the workpiece is taken away, the electrode loop is in an open circuit state, the controller 12 sends a signal to the host, and the host counter is incremented by 1 to complete the counting operation. The device returns to the initial state and waits for the arrival of the next workpiece to repeat the operation.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
Claims (8)
1. The utility model provides an automatic self-locking anchor clamps through detecting motor current change perception object, includes executor cabin (1), controller cabin (2) and electric wire (3), its characterized in that: the electric wires (3) are divided into two groups, one group is connected to a mains supply end as a power wire, and the other group is connected to a pipeline host end as a control wire; mechanical and electronic components are arranged in the actuator cabin (1) and used for sensing and completing clamping and releasing actions on a workpiece; the controller cabin (2) is internally provided with a motor, control equipment and a power supply, and is used for providing power for and controlling the automatic self-locking clamp;
the actuator cabin (1) mainly comprises a cabin and a cabin cover, wherein the cabin mainly comprises a cabin body (4), a fixing clamp (5), a guide rail (6), a connecting rod (7), a rack (8), a pull rod (9) and a push rod (10); the guide rail (6) and the rack (8) are respectively divided into two groups, the fixing clamp (5) is divided into a main fixing clamp (5-1) and a secondary fixing clamp (5-2), the rack (8) is arranged on two sides of the main fixing clamp (5-1), and the guide rail (6) is arranged on two sides of the secondary fixing clamp (5-2); the main fixing clamp (5-1) and the auxiliary fixing clamp (5-2) are connected with the pull rod (9) through the connecting rod (7); the hatch cover mainly comprises a cover plate (21), electrodes (19) and positioning pins (20), wherein the electrodes (19) are two thin metal plates with insulating layers coated on the bottom surfaces, and the bottom surfaces are symmetrically arranged by taking the positioning pins (20) as the center;
the automatic self-locking clamp adopts a modularized design, and the actuator cabin (1) and the controller cabin (2) are combined into a whole; the actuator cabin (1) is responsible for sensing a workpiece and completing clamping and releasing operations on the workpiece; the controller cabin (2) is responsible for sending a level signal to the pipeline host end and receiving the level signal sent by the pipeline host end, so that the execution part of the automatic self-locking clamp is controlled to complete corresponding operation according to a signal instruction.
2. An automatic self-locking clamp for sensing an object by detecting a change in motor current as claimed in claim 1, wherein: a linear motor (11) and a controller (12) are arranged in the controller cabin (2); one side of the main fixing clamp (5-1) is connected to a linear motor (12) through a push rod (10), and the main fixing clamp (5-1) and the auxiliary fixing clamp (5-2) move in opposite directions simultaneously in the axial direction under the action of the linear motor (12); the electrode (19) metal plate is connected with the controller (12) by a wire to form an electrode loop.
3. An automatic self-locking clamp for sensing an object by detecting a change in motor current as claimed in claim 2, wherein: when a workpiece is placed on the cover plate (21) through the positioning pin (20), the workpiece presses the two electrodes (19) simultaneously, namely, the two electrodes (19) are connected, and the controller (12) judges whether the workpiece is placed on the cover plate (21) or not.
4. An automatic self-locking clamp for sensing an object by detecting a change in motor current as claimed in claim 1, wherein: the main fixing clamp (5-1) and the auxiliary fixing clamp (5-2) are different in only bottom structure and each comprises a fixing clamp body (13); the secondary fixing clamp (5-2) is in an inverted I shape, two ends of the bottom are provided with convex sliding blocks in a shape for matching with the inner concave surface of the guide rail (6), and the sliding blocks can freely slide in the inner concave surface; the main fixing clamp (5-1) is a core component of an automatic self-locking clamp, is in an inverted I shape, two round holes with sleeves (16) are formed in the two ends of the bottom, coils (15) are mounted on the inner walls of the round holes, and the two ends of the coils (15) are connected to the controller (12) through wires; the sleeve (16) is sleeved with a pressure spring (17) and a hollow cylindrical magnet (18), the top of the magnet (18) is provided with a clamping tongue (14), the clamping tongue (14) is exposed out of the round hole, and the shape of the clamping tongue (14) is matched with the tooth shape of the rack (8).
5. An automatic self-locking clamp for sensing an object by detecting a change in motor current as claimed in claim 4, wherein: the fixing clamp (5) can move towards the center when the inclined surface of the clamping tongue (14) is contacted with the inclined surface of the rack (8), and the fixing clamp (5) is locked when the vertical surface of the clamping tongue (14) is contacted with the vertical surface of the rack (8).
6. An automatic self-locking clamp for sensing an object by detecting a change in motor current as claimed in claim 4, wherein: the fixing clamp body (13) and the clamping tongue (14) are made of non-magnetic alloy; after the coil (15) is electrified, the magnet (18) is attracted into the hole under the action of magnetic force, at the moment, the clamping tongue (14) is fully retracted into the round hole, and after the coil (15) is powered off, the magnet (18) is jacked by the pressure spring (17) to enable the clamping tongue (14) to be exposed out of the round hole, so that the self-locking and unlocking operation of the fixing clamp (5) is realized.
7. An automatic self-locking clamp for sensing an object by detecting a change in motor current as claimed in claim 1, wherein: a current monitoring circuit is arranged in the controller (12) and is used for monitoring the state of an electrode loop and judging whether the clamping operation is finished or not; the current monitoring circuit monitors the current flowing through the linear motor (11) in real time after the equipment is started.
8. An automatic self-locking clamp for sensing an object by detecting a change in motor current according to any one of claims 1 to 7, wherein: the control equipment in the controller cabin (2) is communicated with the pipeline host end through a bus to complete instruction transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910744065.XA CN110355704B (en) | 2019-08-13 | 2019-08-13 | Automatic self-locking clamp for sensing object by detecting current change of motor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910744065.XA CN110355704B (en) | 2019-08-13 | 2019-08-13 | Automatic self-locking clamp for sensing object by detecting current change of motor |
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| CN110355704A CN110355704A (en) | 2019-10-22 |
| CN110355704B true CN110355704B (en) | 2024-02-20 |
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