386 results about "Separated state" patented technology

The utility model relates to the technical field of electrical switches, in particular to an opening and closing device of a pole-mounted switch, which comprises a shell, a sliding rod, a crankshaft and a connecting rod. The linkage control device further comprises a driving mechanism, and the driving mechanism can drive the crankshaft to swing in a limited mode so as to drive the sliding rod to be switched between the upper limit position and the lower limit position, so that the pole columns are switched between the closed state and the separated state, and the linkage control device has the advantages that linkage control over the multiple pole columns is achieved through a mechanical structure based on the crank connecting rod principle; and the reliability and the convenience of opening and closing control of the pole are greatly improved. Due to the fact that linkage control is achieved, it can be guaranteed that the pole columns can be switched to the needed working state at the same time, and the use reliability and the on-off accuracy of the pole column module are greatly improved.

The invention discloses a wellhead device for gas production and a control system thereof.The wellhead device comprises a gas mine connecting bridge assembly and a gas connecting output mechanism, a sealing lifting sleeve is arranged above the gas mine connecting bridge assembly in a sleeved mode, and a sleeve sealing component is arranged at the top end of the sealing lifting sleeve and connected with a bolt in a sleeved mode; and the top end of the sleeve sealing component is provided with an air pipe head sealing kit which is sleeved by a bolt. According to the device, a structure with a separated state in a lining valve shell is mainly utilized to enable a powerful hydraulic telescopic frame on a top connecting frame to enable a semi-arc plug to ascend and descend, in the ascending and descending operation process, airflow is output through the lining valve shell, the airflow can be in press fit with an adaptive telescopic rod and a stress push plug, and the safety of the device is improved. And the output direction of the lining valve shell can achieve the effect of effectively adjusting the direction, so that when the gas transmission two-outlet valve pipe and the gas transmission three-outlet valve pipe are used for outputting, the effect of continuous working can still be achieved when equipment needs to be maintained.

The invention relates to the technical field of AMT gearbox control, in particular to an AMT gearbox control method, system and equipment in a braking state and a medium, and the method comprises the steps that when a vehicle is in a braking deceleration state, the stepping duration of a brake pedal, the actual vehicle speed, the actual acceleration of the vehicle and the rotating speed of an engine are obtained; whether the braking intention of the driver is emergency braking or stable braking is judged based on the stepping duration of the brake pedal and the actual acceleration of the vehicle; and based on the braking intention, the gear of the AMT gearbox and the separation state of a clutch are controlled till braking is finished. Wherein the current gear is maintained during emergency braking, and a clutch is controlled to be separated according to an engine rotating speed threshold value; during stable braking, after the rotating speed of the engine meets the condition, whether downshift is conducted or not is judged according to the actual vehicle speed, and a clutch is controlled to be separated. The brake intention of a driver can be accurately recognized, differential control is executed, and therefore the brake efficiency is effectively improved, engine flameout is prevented, and the driving smoothness is improved.

The utility model discloses a clutch component, a transmission device, box equipment and a refrigerator. The clutch component comprises a driving piece, a driven piece, a transmission assembly and a driver. The transmission assembly comprises a support, a sun gear rotationally arranged on the support and a planet gear set rotationally arranged on the support, the support is provided with an annular inner gear, the sun gear is in transmission connection with the driving part, and the planet gear set comprises a rotating part in transmission connection with the driven part and a planet gear rotationally arranged on the rotating part; and the planetary gear is meshed with the annular inner gear and the sun gear. The driver comprises a limiting part capable of moving relative to the support, and the limiting part has a limiting state in rotation stopping fit with the support and a separation state separated from the support. According to the clutch component, the intelligent opening and closing requirement of the refrigerator can be met, manual opening and closing operation of a user is not interfered, meanwhile, the structure is simple, and the production cost can be reduced.

The utility model discloses a clutch, a transmission device, box equipment and a refrigerator. The clutch comprises a driving piece, a driven piece and a transmission assembly. The transmission assembly comprises a matching part, a clutch part and an electromagnetic coil, the matching part is in transmission connection with one of the driving part and the driven part, the clutch part is in transmission connection with the other one of the driving part and the driven part, and the clutch part can stretch out and draw back in the rotation axis direction of the driving part; the clutch piece has a transmission state in transmission fit with the matching piece and a separation state separated from the matching piece, and the clutch piece can be reset to the separation state. The electromagnetic coil is arranged on the outer side of the matching piece in a sleeving mode and can generate magnetic attraction force for driving the clutch piece to be in transmission fit with the matching piece after being powered on. According to the clutch, the transmission device can be applied to meet the intelligent opening and closing requirements of the refrigerator, manual opening and closing operation of a user is not interfered, meanwhile, the structure is simple, and the production cost can be reduced.

The utility model discloses an electric push rod which comprises a motor and a transmission mechanism. The screw rod is driven by the transmission mechanism to rotate, and the tubular telescopic component is driven by the rotation of the screw rod to do linear telescopic motion; the controller is used for controlling the motor; the electric push rod further comprises a clutch which is connected between the transmission mechanism and the lead screw and has a joint state used for keeping power transmission of the transmission mechanism and the lead screw and a separation state used for cutting off the power transmission of the transmission mechanism and the lead screw, and the lead screw is subjected to axial tension to enable the clutch to be switched into the separation state. And the Hall sensor is electrically connected to the controller and is used for detecting the rotary motion of the screw rod. When an object or a human body is clamped, the tubular telescopic component is prevented from clamping an obstacle again in a mode that the tubular telescopic component stops retracting and retreats, so that the safety is higher.

The invention discloses an air guide assembly and an air conditioner, the air guide assembly is used for being installed at an air outlet of the air conditioner, the air guide assembly comprises two rotatable air guide plates, the length directions of the two air guide plates are parallel, rotating shafts of the two air guide plates are coaxially arranged, and the axial direction of the rotating shafts is parallel to the length directions of the air guide plates; each air deflector is provided with a first side edge and a second side edge which are opposite in the width direction, the first side edges are located on the sides close to the rotating shaft, the first side edges of the two air deflectors can be switched between a lap joint state and a separation state, and in the separation state, the two air deflectors can provide different air guiding directions. According to the technical scheme, the air outlet direction of the air conditioner can be adjusted in a more diversified mode.

The utility model discloses a clutch component, a transmission device, box equipment and a refrigerator. The clutch component comprises a driven piece and a clutch motor. The driven piece comprises an output part and a matching part connected with the output part; the clutch motor comprises a motor body and a rotating shaft at least partially exposed out of the motor body, the rotating shaft can move in the rotating axis direction of the rotating shaft and has a transmission state in transmission fit with the matching part and a separation state separated from the matching part, and the rotating shaft can reset to the separation state; when the clutch motor outputs power, the rotating shaft extends to a transmission state and drives the driven part to rotate; when the clutch motor stops outputting power, the rotating shaft is reset to the separation state, and the driven piece can rotate relative to the rotating shaft. According to the clutch component, the transmission device can be applied to meet the intelligent opening and closing requirement of the refrigerator, manual opening and closing operation of a user is not interfered, meanwhile, the structure is simple, and the production cost can be reduced.

The utility model discloses a box body device and a refrigerator. The box body device comprises a box body, a drawer and a transmission device. The box body is provided with a storage cavity. And the drawer is telescopically arranged in the storage cavity. The transmission device comprises a bearing part, a clutch, a motor and a telescopic assembly, the bearing part is fixed to the box body, the clutch has a transmission state and a separation state, the telescopic assembly comprises a rotating part rotationally arranged on the bearing part and a telescopic part matched with the rotating part, the telescopic part is in transmission connection with the drawer, and the motor is in transmission connection with the rotating part through the clutch. When the clutch is in a transmission state, the motor drives the rotating piece to rotate through the clutch so as to drive the drawer to move relative to the box body through the telescopic piece. And when the clutch is in a separation state, the motor and the telescopic assembly are disconnected from transmission. According to the box body equipment, the drawer can be automatically opened or closed, the reliability of manually opening and closing the drawer can be improved, and the use experience of a user can be improved.

The invention relates to the technical field of hybrid power vehicles, in particular to a clutch assembly for a hybrid power system, the hybrid power system, a control method and device of the hybrid power system, a vehicle and a storage medium. The clutch assembly includes: a power input shaft; the power input shaft is sleeved with the one-way clutch, the driving gear and the thrust transmission assembly. The one-way clutch comprises an inner ring assembly. The driving gear comprises a connecting shaft, and the outer side wall of the connecting shaft is used for being matched with the movable body of the inner ring assembly. The thrust transmission assembly is used for triggering the one-way clutch to rotate relative to the power input shaft so that the one-way clutch and the driving gear can be switched between the self-locking state and the separation state. The self-locking state means that the movable body abuts against the outer side wall of the connecting shaft; and the separation state means that a gap is formed between the movable body and the outer side wall of the connecting shaft. According to the clutch assembly disclosed by the invention, the required hydraulic pressure can be reduced, the switching efficiency of series-parallel connection modes is improved, the driving and riding comfort is improved, and the dragging and friction loss can be reduced.

The utility model provides an anti-overturning arm auxiliary closing mechanism of a seaborne launch rocket stabilizing device. The anti-overturning arm auxiliary closing mechanism comprises a first anti-overturning arm auxiliary closing mechanism and a second anti-overturning arm auxiliary closing mechanism. The first anti-overturning arm auxiliary closing mechanism and the second anti-overturning arm auxiliary closing mechanism are arranged at the bottom of a first anti-overturning device and the bottom of a second anti-overturning device of the seaborne launch rocket stabilizing device correspondingly. When the first anti-overturning device is in an overturning state, the first anti-overturning arm auxiliary closing mechanism adjusts the first anti-overturning device to be in a vertical state; and when the second anti-overturning device is in an overturning state, the second anti-overturning arm auxiliary closing mechanism adjusts the second anti-overturning device to be in a vertical state. According to the supporting device, in-place supporting of the marine launch rocket stabilizing device is achieved, the anti-overturning arm auxiliary closing mechanism and the anti-overturning arm of the marine launch rocket stabilizing device can be switched to be in a supporting state or a separation state, and the reliability, stability and safety of the marine launch rocket stabilizing device are improved.

The utility model provides a sliding uncovering assembly and a sealing tank, the sliding uncovering assembly comprises a tank body, a cover body and a sliding piece, and the tank body is used for containing objects; the cover body is arranged on one side of the tank body and can cover or be separated from the tank body; the sliding piece is connected to the cover body in a sliding manner; the sliding part drives the cover body to clamp or loosen the tank body in the sliding process, the cover body is clamped with the tank body so that the covering state of the cover body and the tank body can be maintained, the cover body loosens the tank body so that the separation state of the cover body and the tank body can be maintained, and the tank body can be opened by the cover body, so that the cover body can be opened from the tank body in a sliding mode; the cover body is prevented from being opened from the tank body in a turnover mode, and the operation convenience of the sliding cover opening assembly is improved.

The utility model provides a double-cylinder vertical zero-residual brake. The double-cylinder vertical zero-residual brake comprises a spline shaft, the spline shaft is sleeved with a base plate, friction plates, dual plates and cylinders, the two friction plates, the two dual plates and the two cylinders are symmetrically arranged on the two sides of the base plate, and the two ends of the spline shaft are each sleeved with a bearing and a retaining ring for a hole. When the piston of the double-cylinder vertical zero-residual brake is in zero air pressure, contact surfaces of the friction plates are in a separated state, zero-residual torque and zero-abrasion states are achieved, and the double-cylinder vertical zero-residual brake has the advantages of being simple and compact in structure, easy to manufacture, convenient to install, low in production cost, small in use noise, small in abrasion and long in service life.

The utility model relates to the technical field of walking mechanical equipment, and particularly discloses a cab turnover assembly and engineering mechanical equipment, when the engineering mechanical equipment provided with the cab turnover assembly is overhauled, a locking assembly is switched to a separation state, at the moment, a cab can be driven to rotate around a pivot shaft relative to a frame, and the cab is turned over. When the included angle between the cab and the frame is the first preset included angle, the fixing piece fixes the included angle between the cab and the frame to be the first preset included angle, and at the moment, a worker can overhaul equipment below the cab. The included angle between the cab and the frame is fixed to be the first preset included angle through the fixing piece, the cab is prevented from being excessively turned over or moving in the unexpected direction, and then the safety and stability of engineering mechanical equipment are improved.

The present application relates to the field of air compressor, specifically is common type cylinder head blank and air compressor. Common type cylinder head blank includes cover part and isolation part, cover part is provided with first exhaust port, second exhaust port, inner cavity and mounting surface for covering valve plate, inner cavity is separated by isolation part into first chamber, second chamber, third chamber, fourth chamber, fifth chamber, sixth chamber and seventh chamber, also has first variable shape part, second variable shape part and third partial isolation part is defined as third variable shape part. By configuring second exhaust port to communicate with third chamber, and by setting first variable shape part and third variable shape part in separated state from the rest of isolation part, common type cylinder head blank can be applied to primary compressor with two cylinder chambers, or, by setting second variable shape part in separated state from the rest of isolation part, common type cylinder head blank can be applied to secondary compressor with two cylinder chambers.

The utility model provides a kind of foaming forming die die changing cooperation mechanism, including die changing device, foaming mould box and mould box clamp, mould box clamp includes upper clamp and lower clamp, foaming mould box includes upper die and lower die, first lock pin connecting mechanism and second lock pin connecting mechanism are respectively equipped between upper clamp and upper die and between lower clamp and lower die, die changing device includes device frame, device frame is also equipped with die changing assembly, first lock pin connecting mechanism and second lock pin connecting mechanism both have locking connection state and unlocking separation state, when being in locking connection state, upper clamp and upper die, lower clamp and lower die are connected as a whole, when being in unlocking separation state, upper clamp and upper die, lower clamp and lower die are disconnected, die changing assembly can drive first lock pin connecting mechanism and second lock pin connecting mechanism synchronous switching between locking connection state and unlocking separation state. The utility model can save artificial cost, improve die changing efficiency.

The invention discloses a clutch, a transmission device, box equipment and a refrigerator. The clutch comprises a driving piece, a driven piece and a transmission assembly. The driven piece comprises an output part and a matching part fixedly connected with the output part, and the matching part is provided with a containing groove. The transmission assembly comprises a rotating piece rotationally arranged in the containing groove, a clutch piece in transmission fit with a transmission piece, and a transmission piece fixedly connected with the driving piece. And the clutch piece is movably arranged on the rotating piece, has a transmission state in transmission fit with the matching part and a separation state separated from the matching part, and can be reset to the separation state. The transmission part can rotate relative to the rotating part along with the driving part so as to push the clutch part to be in a transmission state. According to the clutch, the transmission device can be applied to meet the intelligent opening and closing requirements of the refrigerator, manual opening and closing operation of a user is not interfered, meanwhile, the structure is simple, and the production cost can be reduced.

The invention discloses a telescopic four-axis wind power blade transportation semitrailer, and relates to the technical field of wind power blade transportation semitrailers, the telescopic four-axis wind power blade transportation semitrailer comprises a shell, a sleeve is slidably connected to the interior of the shell, a sliding block is slidably connected to the interior of the sleeve, and a fixing plate is fixedly connected to the end, close to a tractor, of the sliding block; a round hole is formed in the outer side, close to the fixing plate, of the shell and completely penetrates through the shell, the sleeve and the sliding block in the thickness direction of the shell, an electromagnetic block is slidably connected into the round hole, a fixing ring is fixedly connected to the outer side, close to the round hole, of the shell, and an elastic plate is fixedly connected to one end of the electromagnetic block. According to the telescopic four-axis wind power blade transportation semitrailer, under the elastic force action of the elastic plates on the two sides, the electromagnetic block moves in the direction away from the sliding block, at the moment, the shell, the sleeve and the sliding block are in a free separation state, an operator can adjust the total length of the semitrailer body according to the length of a wind power blade, and the loading requirements of goods of different specifications are met.

The anti-jamming lock cylinder comprises a lock shell, a lock container installed in the lock shell and a tail ruler assembly connected into the lock shell, a clutch assembly enabling the lock container to be separated from or combined with the tail ruler assembly is arranged between the lock container and the tail ruler assembly, and a key hole is formed in the lock container; when the key is not inserted into the key hole, the tail ruler assembly is separated from the clutch assembly and the lock cylinder; after the key is inserted into the key hole and gradually pushes the clutch assembly to enter the tail ruler assembly, the key is rotated, the lock container, the clutch assembly and the tail ruler assembly can coaxially and synchronously rotate, and the clutch assembly is in circumferential limiting fit with the lock container and the tail ruler assembly through a circumferential limiting structure. Due to the effect of the clutch assembly, the tail ruler assembly and the lock cylinder are in a separated state, even if foreign matter invades the key hole and blocks the key hole, the tail ruler assembly can still idle, motor burning or part damage caused by the foreign matter of a traditional lock cylinder is effectively avoided, and meanwhile the problem that indoor unlocking cannot be achieved due to the fact that a user forgets to pull out a key is solved.

The invention discloses a vertical axis wind turbine integrated with auxiliary motor starting, and belongs to the technical field of wind power generation. Comprising a base, a generator is fixedly connected to the right side of the upper surface of the base, an outer disc is fixedly connected to the top end of the output end of the generator, a blade assembly is fixedly connected to the upper surface of the outer disc, a transmission assembly is fixedly connected to the left side of the upper surface of the base, and a fluted disc is fixedly connected to the outer side wall of the outer disc. The transmission assembly is in meshed connection with the fluted disc; through the exquisite design of the transmission assembly, the bottleneck of low-wind-speed starting of traditional equipment is effectively broken through, and the applicability and practicability of the equipment are remarkably improved. In the initial state of the equipment, the electric telescopic rod on the base is in an extending state, the transverse block stops at the initial position of the side groove, the sliding block is located at the tail end of the sliding groove, the auxiliary gear and the fluted disc are kept in a separated state, and interference between components in a non-working state is avoided.

The utility model discloses a masonry structure jacking device, masonry structure jacking device sets up between target wall and base, including underpinning subassembly, support subassembly, jacking assembly and main control unit, underpinning subassembly detachable connection in target wall near the one side of base, support subassembly includes detachable connection's first support plate and second support plate, and jacking assembly includes several groups of hydraulic lifting element, and hydraulic lifting element is in working condition, and first support plate and second support plate are in the separate state, guarantee hydraulic lifting element normal jacking work, when hydraulic lifting element is in non - working condition, first support plate and second support plate are in the connection state, and the target wall and base are supported, improve the effective stroke of hydraulic lifting element, can continue jacking work, and the component continues to support the target wall and base in the whole process, and the target wall does not appear the problem of falling back, realizes the target wall step by step advancement undisturbed synchronous jacking.

To provide a printing device that can properly execute engagement of gear trains when replacing a cartridge.SOLUTION: A printing device is constituted of: a printing head 121 that performs printing on a tape; a platen roller 122 that can be brought into either of a pressing state where the roller rotates to convey the tape while pressing the tape and a separation state where the platen is separated from the printing head 121, in a state where the tape is held between the printing head 121 and the platen roller when the printing is performed; and a plurality of gear wheels G6-G9 that rotate the platen roller 122, which is provided with a fixing mechanism 140 that fixes movement of the gear wheels G6-G9 separated from the printing head 121 together with the platen roller 122 when the platen roller 122 is in the separation state and fixes movement of at least one gear wheel of the gear wheels G6-G9, when the platen roller 122 is in the separation state.SELECTED DRAWING: Figure 6

A terminal fitting (10) connected to a core wire (83) exposed from a covering part (82) at the tip of an electric wire (81) is provided with: a connection member (11) having a contact part (11B) into which the core wire (83) is inserted, the contact part (11B) being contactable with the core wire (83); and a sliding member (12) attached to the connecting member (11) so as to be slidable in the front-rear direction. The sliding member (12) can slide between a first position in which the contact part (11B) is in a separated state from the core wire (83) and a second position in which the contact part (11B) is in a contact state with the core wire (83). The sliding member (12) has a holding portion (12B) that covers the core wire (83) and holds the tip portion of the covering portion (82) in a state where the sliding member (12) is disposed at the second position.

The present invention discloses a magnetically assembled golf club bag head frame including a head frame body and a top annular piece. A clamping groove is provided on a side wall of the head frame body. A clamping joint is provided on a side wall of the top annular piece. The clamping groove is provided with a magnet groove in which a first magnet is provided. The clamping joint is provided with a magnet groove in which a second magnet is provided. During transportation, the golf club bag is a semi-finished product, a bag body is connected to the top annular piece, and the top annular piece and the head frame body are in a separated state.

The utility model discloses an unlocking prompt assembly and injection device, wherein the unlocking prompt assembly comprises a trigger key, a shell and a knob; the trigger key is accommodated in the shell and has an abutting state and a separation state with the knob; the knob is partially accommodated in the shell, is clamped with the shell and can rotate relatively, and the outer wall of the knob is provided with a first matching part; the shell is provided with an accommodation space, the shell is provided with a locking mark and an unlocking mark, the second matching part is arranged on the inner wall of the shell and corresponds to the locking mark and the unlocking mark, the knob is in interference fit with the shell through the first matching part or the second matching part, the knob is deformed radially, and the first matching part can rotate between the locking mark and the unlocking mark. The unlocking prompt assembly and the injection device have the advantages of simple structure, reduced number of parts and components, simplified assembly process, locked trigger device, prevented mis-triggering, produced sound feedback and visual feedback simultaneously during use, improved operation convenience, and provided better safety protection.

The mold demolding mechanism for walnut cake forming comprises an annular elastic wall and a circular elastic bottom, a forming cavity is formed between the annular elastic wall and the circular elastic bottom, the annular elastic wall and the circular elastic bottom deform during demolding, the annular elastic wall and the circular elastic bottom move relative to a walnut cake, and adhesion is avoided; when the forming cavity rotates to the bottom along with the forming roller assembly, the driving assembly actively drives the annular elastic wall to expand towards the periphery and actively drives the circular elastic bottom to move in the axis direction of the forming roller assembly. The mold has the beneficial effects that through the design of the forming roller assembly and the pressing roller, mold closing and mold opening operation is carried out in a rolling mode, and the production efficiency is greatly improved; through the arrangement of the driving assembly, the annular elastic wall and the circular elastic bottom, the annular elastic wall and the circular elastic bottom can deform when the walnut cake is demolded; at the moment, the walnut cake is separated from the annular elastic wall and the circular elastic bottom, and the walnut cake falls down under the action of gravity.

The utility model discloses a head shaking locking wrench which comprises a wrench head and a handle, the wrench head is rotatably connected with the handle, a clamping unit is arranged on the side, close to the handle, of the wrench head, a limiting unit is arranged on the side, close to the wrench head, of the handle, and the limiting unit is connected with a reset unit. The reset unit is arranged on the handle, the limiting unit is connected to the handle in a sliding mode, and when the limiting unit slides in the handle, the limiting unit can be switched between the clamped state and the separated state of the clamping unit. The utility model provides a head-shaking locking wrench which can enable the mode of locking the angle of a handle to be more convenient and quicker, reduces extra operation in the process and improves working efficiency.

The invention provides a padlock mechanism of an isolating switch, which comprises a base, a padlock piece and a main shaft, the main shaft is arranged on the base, the main shaft is used for transmitting rotary motion to actuate a contact system of the isolating switch to realize opening and closing, the padlock piece is arranged on the base in a sliding manner, and the padlock piece is arranged on the base. And the padlock piece can slide relative to the main shaft, so that the padlock piece and the main shaft can be switched from a separated state to a clamped state, and the main shaft is switched from a rotatable state relative to the base to a rotary motion which is limited. The padlock piece is clamped with the main shaft, so that the rotation of the main shaft relative to the base is limited, compared with the mode that the rotation of the main shaft is limited through a locking handle, the rotation of the main shaft relative to the base is directly locked through the padlock piece, the locking is more reliable, and the safety is higher.

The utility model discloses a door lock clutch mechanism and a door lock device. The clutch driver drives the clutch piece to move through the limiting connecting piece so as to switch the combination state and the separation state, and when the door lock clutch mechanism is in the clutch state, the limiting connecting piece can be kept connected with the clutch piece, so that the clutch piece is difficult to jump when the door lock clutch mechanism is knocked, the risk that the door lock is unlocked due to the fact that the door lock clutch mechanism is accidentally switched to the combination state can be reduced, and the safety of the door lock is improved. And the safety is improved.

To detect the state of separation between two workpieces without opening the chamber when two workpieces are separated from each other in a chamber. [Solution] In the peeling device, the chamber mechanism uses the elasticity of the sealing portion to change the relative position of the second chamber forming portion with respect to the first chamber forming portion between a first position and a second position while maintaining the first and second chamber forming portions in a combined state. The peeling mechanism enables two bonded workpieces to be peeled by growing a cleavage between their bonded surfaces within the chamber. It uses the internal pressure of the chamber to generate a pressure difference between the front and back of one of the workpieces, making the bonded surface of the workpiece positive pressure, and expands the area where this pressure difference occurs to grow the cleavage. The control device detects the state of peeling between the two workpieces based on the output of a displacement sensor that detects the relative position of the second chamber forming portion.