605 results about "Contact mechanism" patented technology

The utility model relates to the field of low-voltage electric appliances, in particular to a power supply control mechanism, which comprises a reset button, a tripping rod, a tripper, a control module and a switch contact system. When the reset button is at the hasp position or the release position, the switch contact system is switched on or switched off; a switch moving contact mechanism of the switch contact system comprises a contact support, a switch moving contact and a switch moving contact spring; in the process that the reset button moves to the hasp position, the switch moving contact mechanism is firstly driven to move to enable the switch moving contact to be in initial contact with the switch static contact, and then the contact support and the switch moving contact are driven to move relatively to enable the switch moving contact spring to store energy; in the process that the reset button moves to the tripping position, the switch moving contact spring releases energy to enable the switch moving contact and the contact support to recover limiting fit; according to the power supply control mechanism, the current-carrying capability and the arc-resistant capability of the switch contact system are good.

The invention discloses a multi-gear adjusting rotary switch, which comprises a base, a shell cover, a rotary handle and a contact assembly, and is characterized in that the rotary handle is rotationally arranged between the base and the shell cover and is provided with a driving rod extending along the radial direction of the rotary handle; the contact assembly comprises a plurality of moving contact bridges which are annularly arranged in the mounting cavity with the axis of the rotating handle as the center and are of elastic structures, and a plurality of static contact pieces which are arranged on the base and are opposite to the plurality of moving contact bridges, and the plurality of moving contact bridges are connected and are located on the moving path of the driving rod. According to the technical scheme, the driving rod drives the multiple movable contact bridges to make contact with the multiple static contact pieces in the process of rotating along with the rotating handle, operation pressure is remarkably dispersed through an in-turn contact mechanism formed by the driving rod and the multiple movable contact bridges, continuous stress of a single movable contact bridge is avoided, the mechanical load and the fatigue degree of the movable contact bridges are greatly reduced, and the service life of the movable contact bridges is prolonged. The heating probability is reduced, abrasion and fusion welding risks are reduced, and the mechanical service life is prolonged.

According to the contact mechanism, the contact system and the DC contactor of the utility model, the auxiliary moving contact module moves with the moving part transmission member and the moving contact bridge on the transmission member in an interlocking manner, the dimension chain is short, and the movement stroke is stable and reliable; as the reed is in interlocking fit with the transmission piece and the movable contact bridge through the base, the transmission piece can push the base to enable the movable contact bridge and the reed to synchronously perform disconnection motion, and inevitable disconnection can be ensured through larger main spring counterforce even if the reed is adhered to the auxiliary static contact, so that the on-off states of the main contact and the auxiliary loop are ensured to be consistent.

The utility model discloses a milling cutter convenient to replace, which relates to the technical field of milling cutters, and comprises a milling cutter body and a positioning mechanism, the positioning mechanism comprises a lifting sleeve sleeved on the outer wall of a mounting seat, the bottom of the inner wall of the lifting sleeve is provided with an extrusion circular truncated cone surface, and the outer wall of the mounting seat is provided with a plurality of movable holes; connecting rods are movably connected to the inner walls of the multiple movable holes in a penetrating and inserting mode, and contact mechanisms are arranged between the connecting rods and the milling cutter body. By means of the arrangement of the lifting sleeve, the extrusion circular truncated cone face, the movable hole and the connecting rod, the lifting sleeve moves downwards on the outer wall of the installation base, the extrusion circular truncated cone face extrudes the connecting rod, and therefore the multiple contact mechanisms move at the same time till the multiple contact mechanisms tightly abut against the milling cutter body; therefore, the milling cutter body can be kept coaxial with the mounting seat after being mounted, so that the milling cutter body cannot eccentrically rotate when the mounting seat rotates to drive the milling cutter body to work, and the mounting stability of the milling cutter body is improved.

The invention relates to the technical field of lifting frames, in particular to an X-ray detection equipment lifting frame which comprises a base, two symmetrically-arranged lifting assemblies are mounted on the outer wall of the top of the base, the same mounting frame is mounted at the tops of the two lifting assemblies, and the same fixing frame is fixedly connected to the inner walls of the four sides of the mounting frame; and the outer wall of the top of the fixing frame is rotationally connected with a rotating disc, and two symmetrically-arranged contact mechanisms are installed on the outer wall of the rotating disc. The defects in the prior art are overcome, the two contact mechanisms are arranged on the rotating disc, the X-ray machine can be fixed and supported conveniently, meanwhile, the rotating disc can be rotationally adjusted, the direction of the X-ray machine can be adjusted conveniently, meanwhile, the lifting assembly on the base is matched, the height of the X-ray machine can be adjusted conveniently, and the X-ray machine is convenient to adjust. Through cooperation of the lifting assembly, the mounting frame and the rotating disc, the adjustability of the X-ray machine is improved, and then the detection efficiency of the X-ray machine is improved.

The invention belongs to the technical field of electricity testing equipment, and discloses a mobile automatic electricity testing device, which comprises an intelligent mobile trolley, an end position limiting module, a multi-point synchronous contact mechanism, an indirect continuous detection mechanism and a self-detection mechanism, a vehicle-mounted supporting frame is fixedly installed on the intelligent moving trolley, a vertical linear module is fixedly installed on the vehicle-mounted supporting frame, and a multi-point synchronous contact mechanism is installed at the moving end of the vertical linear module. The multi-point synchronous contact mechanism comprises a horizontal linear module, an elastic supporting module and a first contact module. The moving end of the vertical linear module is provided with an end limiting module used for limiting and supporting the end of the first contact module. An indirect continuous detection mechanism for continuously detecting the electrified state of the plurality of groups of contact modules I is mounted on the movable mounting frame; and a self-checking mechanism for self-checking is mounted on the end position limiting module and the movable mounting frame. Through the above mode, continuous detection of a plurality of detection points is realized, and the detection efficiency is improved.

The utility model discloses a multi-head induction cooker structure capable of reducing reactive power loss, and relates to the technical field of induction cookers, the multi-head induction cooker structure capable of reducing reactive power loss comprises a multi-head induction cooker body, the multi-head induction cooker body is provided with two rows of heating areas which are arranged at equal intervals, a plurality of fixing columns are fixedly connected to the surface of the multi-head induction cooker body and distributed on the periphery of the heating area, telescopic mechanisms are arranged on the surfaces of the fixing columns, and contact mechanisms are arranged at the ends, away from the fixing columns, of the telescopic mechanisms. When the multi-head induction cooker structure and the multi-head induction cooker device capable of reducing the reactive power loss are used, the position of a pot is positioned, and the pot can be always positioned in the range of a heating area, so that the condition that the bottom part of the pot is positioned outside the heating area and the reactive power loss is generated in the heating area is reduced, the reactive power loss of the multi-head induction cooker device is further reduced, and the service life of the multi-head induction cooker device is prolonged. The energy-saving effect of the multi-head induction cooker body is improved, and the practicability of the device is improved.

The utility model relates to the technical field of butterfly valves, in particular to a leakproof sealing type butterfly valve which comprises a valve body, a valve mechanism is installed in the valve body, a connecting shaft is fixed to the center of the inner side of the valve mechanism in a penetrating mode, and the connecting shaft is rotationally connected with the valve body. The valve mechanism comprises a valve plate, supporting rings are fixed to the two sides of the middle of the outer wall of the valve plate, anti-leakage sealing pieces are fixed to the outer portions of the supporting rings, wear-resisting contact mechanisms are welded to the edges of the two sides of the outer wall of the valve plate and attached to the anti-leakage sealing pieces, and rubber rings are fixed to the inner sides of the wear-resisting contact mechanisms. The abrasion-resistant contact mechanism comprises an abrasion-resistant ring, and the lower surface of the abrasion-resistant ring is connected with the valve plate in a welded mode. Particles on the inner wall of the valve body are effectively scraped away through the abrasion-resistant contact mechanism, and the leakage-proof sealing piece is prevented from being ground; the anti-leakage sealing piece enhances the fitting and anti-deformation capacities through a buffer structure; and the supporting ring anti-falling piece guarantees complete sealing, and the sealing and wear-resisting performance is comprehensively improved.

A circuit breaker relates to the technical field of low-voltage electrical appliances and comprises a shell, a handle, an operating mechanism and a contact mechanism, the shell is provided with a first rotating shaft and a second rotating shaft, the operating mechanism is mounted on the first rotating shaft and comprises a mechanism seat, a jump fastener and a lock fastener, the contact mechanism comprises a moving contact and a static contact, the moving contact is mounted on the second rotating shaft, and the static contact is mounted on the second rotating shaft. The handle and the jump fastener are connected through a first connecting rod. The jump fastener and the moving contact are connected through a second connecting rod. During normal switching-on or switching-off operation, the locking fastener is buckled with the tripping fastener, and the handle is driven to drive the mechanism seat to rotate around the first rotating shaft through the first connecting rod, so that the moving contact is driven to be close to or far away from the static contact through the tripping fastener and the second connecting rod; when a fault is tripped, the locking piece and the tripping piece are tripped, and the moving contact is driven to rotate around the second rotating shaft so as to be far away from the static contact. According to the circuit breaker, the operating mechanism and the moving contact are respectively arranged on different rotating shafts, and the motion decoupling of the operating mechanism and the moving contact is realized during fault tripping, so that the moving contact can be quickly broken.

According to the contact mechanism, the contact system and the direct current contactor, the magnet yoke is used as a motion reference of the driving module, the magnet yoke is used for limiting the upper portion of the driving module through the limiting cooperation of the movable iron core which is in linkage connection with the magnet yoke and the driving module, the magnet yoke is used for limiting the lower portion of the driving module, and the auxiliary movable contact module is fixed on the magnet yoke through the installation frame. Interlocking and limiting with the driving module are realized, mechanical parameter adjustment and fixation of the auxiliary movable contact module can be completed before welding and sealing, and the working reliability of the auxiliary movable contact module after welding is ensured. Meanwhile, the height of the auxiliary movable contact module is determined by the height of the mounting frame fixed on the magnet yoke, the size chain is single, the superposition tolerance is small, and the risk of excessive or insufficient pushing caused by the fact that the movement stroke of the driving module is influenced by the tolerance is reduced.

A contact mechanism and a direct current contactor of the present invention. An auxiliary moving contact module moves in an interlocked manner with a transmission member, which is a moving part, and a moving contact bridge on the transmission member, a dimensional chain is short, and the movement stroke is stable and reliable. Since a reed is in interlocking fit with the transmission member and the moving contact bridge by means of a base, the transmission member can push the base to enable the moving contact bridge and the reed to synchronously perform disconnection motion, so that necessary disconnection can be ensured by means of a relatively large counterforce of a main spring even if the reed is adhered to an auxiliary fixed contact, thereby ensuring that the on-off states of a main contact and an auxiliary loop are consistent.

The invention discloses a sampling detection device for textile production, and relates to the technical field of textile production detection. Comprising a mounting rack, a traction roller is arranged on the mounting rack, a clamping mechanism is arranged at the bottom end of the mounting rack, and a sampling detection mechanism is arranged at the top end of the mounting rack; the sampling detection mechanism comprises a moving frame, two stretching mechanisms are arranged on the moving frame, a contact mechanism is arranged between the two stretching mechanisms and divides sample cloth, the two stretching mechanisms clamp and stretch one piece of sample cloth respectively, the contact mechanism comprises a detection electric cylinder, and an extrusion part is arranged on a telescopic rod at one end of the detection electric cylinder. A friction part is arranged on the telescopic rod at the other end; the stretching mechanism comprises a rotary table rotationally mounted on the moving frame, and a clamping piece is arranged on the rotary table; after the sample is sampled, the segmentation operation is realized, so that multiple detections are completed, and the sampling and fixing operation is simplified.

The invention relates to the technical field of medical nursing instruments, in particular to an obstetrical post-cesarean wound nursing device which comprises a binding belt, a binding part is arranged on the binding belt and fixedly connected with a first locking assembly, an abdominal cover belt is arranged between the two ends of the inner edge of the binding belt, and second locking assemblies are arranged at the two ends of the abdominal cover belt. Symmetrical positioning assemblies are arranged on the inner edge wall of the abdominal cover belt and used for positioning the wound position of a puerpera, and anti-skid assemblies are arranged on the surfaces of the positioning assemblies. An adjusting assembly is arranged on the side, away from the abdomen cover belt, of the inner edge wall of the binding belt, in the binding process of the binding belt, when the puerpera sweat, the anti-skid assembly can improve the contact stability of the binding belt and the skin of the puerpera, and the adjusting assembly dynamically adjusts the tightness of the binding belt according to the enhanced binding acting force. By designing a wound covering and positioning structure, a dynamically-adjusted binding contact mechanism and a binding force dynamic compensation mechanism, the technical defect that the nursing belt is loosened due to wound traction and mattress sweat during postpartum movement of a puerpera is overcome.

The invention belongs to the technical field of orthopaedic orthopaedics, and particularly discloses a reduction and fixation orthopaedic orthopaedic device for orthopaedics, the upper side and the lower side of a positioning part are slidably connected with sliding rods, the side, close to the sliding rods, of the positioning part is fixedly connected with an adjusting part, and the positioning part comprises two positioning frames. According to the reduction and fixation orthopedic equipment for the orthopedics department, the positioning component is arranged, and a cooling mechanism is arranged in the middle of the inner side of the positioning frame, so that ice compress detumescence can be directly carried out on a bruise position, local swelling and pain caused by fracture or correction operation of a patient are relieved in time, local blood circulation is promoted, and favorable conditions are created for bone healing; when the positioning frame is worn for a long time, the contact mechanism can massage and relieve the corresponding part of the patient, muscle stiffness and discomfort caused by long-time fixation are relieved, the wearing comfort of the patient is improved, and the patient can better cooperate with treatment.

The contact mechanism comprises a moving contact assembly and a static contact group, the moving contact assembly comprises a contact support and a moving contact bridge, the moving contact bridge is driven by the contact support to move in the direction close to or away from the static contact group, the moving contact assembly further comprises two elastic devices, a connecting piece is arranged in the middle of the moving contact bridge, and the elastic devices are connected with the moving contact bridge. The first end and the second end of each elastic device are rotationally connected with the contact support and the connecting piece respectively, so that the two elastic devices are matched to be switched among a first balance position, a dead point position and a second balance position, and during normal opening and closing, the two elastic devices are kept at the first balance position with an included angle and apply pressure to the movable contact bridge; when a short-circuit fault occurs, the movable contact bridge is repelled by an electrodynamic force and drives the second ends of the two elastic devices to move relative to the contact support, and the two elastic devices are switched and kept at a dead point position or a second balance position forming an included angle to limit the movable contact bridge. The elastic device improves the reliability of the contact mechanism.

The invention relates to the technical field of switch cabinets, in particular to a metal armored high-voltage switch cabinet which comprises an armored cabinet body, a placement plate is fixedly connected to the inner wall of the armored cabinet body, a handcart is arranged on the side, corresponding to the placement plate, of the interior of the armored cabinet body, and a power-on protection mechanism and a reinforcing contact mechanism are arranged between the handcart and the placement plate; the power-on protection mechanism comprises a fixing plate fixedly connected to one end of the outer side of the placing plate, telescopic holes are formed in the upper end and the lower end of the fixing plate in a penetrating mode, clamping columns are symmetrically arranged on the two sides of the inner walls of the telescopic holes, and transverse plates fixedly connected to the upper side and the lower side of one end of the inner side of the handcart are further included. Clamping grooves are formed in the ends, close to each other, of the two transverse plates; according to the invention, the cabinet door can be prevented from being opened under a power-on condition, so that electric arcs can be prevented from being generated when the moving contact box and the static contact box are separated, electric appliance elements in the armored cabinet body are protected, injury to workers can be prevented, and the safety is improved.

The invention relates to the field of low-voltage electric appliances, in particular to an operating mechanism and a switching device comprising the operating mechanism. In the operating mechanism, an operating shaft 2 drives a spring to store energy first and then release energy through an energy storage shaft, a connecting rod used for being in transmission connection with a moving contact mechanism of the switching device is kept static before the spring starts to release energy, and the energy storage shaft and the connecting rod are driven to rotate towards two opposite directions respectively by the energy release of the spring; the operating mechanism can drive the moving contact mechanism to rotate by a larger angle through the connecting rod, and the opening distance between the moving contact mechanism and the static contact is increased, so that the breaking performance and the electrical performance of the switching device are improved.

The utility model discloses a hydraulic support roof-contacting device, belongs to the technical field of coal mining equipment, and solves the problem that support top beams of hydraulic supports are not compactly contacted with the roof due to unevenness of roadway roofs. Comprising a closed high-pressure liquid tank, the lower portion of the high-pressure liquid tank is detachably connected with a support top beam of a hydraulic support, a plurality of floating type roof-contacting mechanisms are arranged on the upper portion of the high-pressure liquid tank, driving parts of the floating type roof-contacting mechanisms are located in the high-pressure liquid tank, and roof-contacting parts of the floating type roof-contacting mechanisms are located above the top of the high-pressure liquid tank. And a high-pressure liquid medium with a constant volume is arranged in a liquid cavity of the high-pressure liquid tank. The hydraulic support is reasonable in design, compact in structure and capable of automatically adjusting the telescopic length of a plurality of floating type roof contact mechanisms according to the actual shape of the roadway roof so as to be tightly attached to the uneven and undulating roadway roof, and the supporting effect and the use safety of the hydraulic support are effectively improved.

The invention relates to a universal circuit breaker energy absorption device, and the device comprises a housing which is of a hollow structure; the moving contact mechanism comprises a supporting seat, and the lower end of the supporting seat is rotatably arranged at the bottom of the inner side of the shell; the energy absorption structure is made of a high-temperature-resistant viscoelastic material and is arranged at the front end of the inner side of the shell; when the universal circuit breaker is switched off, the supporting seat rotates around the rotating axis at the lower end to a switching-off position, the front end of the supporting seat is in collision contact with the energy absorption structure, the energy absorption structure is made of a high-temperature-resistant viscoelastic material, friction and lag deformation are generated after the energy absorption structure is stressed, kinetic energy is converted into heat energy, and the energy absorption structure is in contact with the energy absorption structure. The collision kinetic energy between the supporting seat and the inner side of the shell is reduced, so that the resilience force converted from the collision kinetic energy is reduced, the resilience distance is obviously reduced after the supporting seat collides with the shell, and the possibility of electric arc reignition is greatly reduced.

The utility model relates to the technical field of protectors, in particular to a riveting wire type protector, which comprises a shell, a connecting piece and a connecting piece, the static contact mechanism comprises a static contact piece, a static contact pin connected with the static contact piece, and a static contact. The movable contact mechanism comprises a bottom plate, a movable contact pin connected with the bottom plate, a heating element arranged on the bottom plate, a movable contact assembly fixedly connected with the bottom plate, and a movable contact arranged opposite to the static contact; the static contact mechanism and the movable contact mechanism penetrate through and are fixedly connected with the fixed seat; the fixed seat comprises a first sealing block and a second sealing block; when the movable contact assembly is reset, the movable contact can be in contact with the static contact, and when the movable contact assembly acts, the movable contact is far away from the static contact. According to the utility model, the fixed block is fixedly connected with the static contact mechanism and the movable contact mechanism, so that the assembly complexity is reduced, the sealing performance of equipment is improved, external pollutants and glue are prevented from entering key parts of the protector, and the qualified rate of the protector is improved.

The invention provides an automatic testing device and method for a semiconductor module, and the device comprises a pedestal which is provided with a detection region; the supporting plate is arranged on the base in a sliding manner; the contact structure assembly is arranged on the supporting plate and used for being in butt joint with a detection contact of the semiconductor module; the electrifying contact mechanism is arranged on the supporting plate and used for being in butt joint with an electrode contact of the semiconductor module; the gluing pushing mechanism is arranged on the base in a sliding mode and connected with the supporting plate, the gluing pushing mechanism is provided with a vertically-through detection window, the contact structure assembly and the electrifying contact mechanism are both located in the detection window, and the detection window is used for containing a semiconductor module; and the heat dissipation mechanism comprises a liquid cooling plate, and the liquid cooling plate is located above the gluing pushing mechanism and is movably arranged in the vertical direction. The problems that in the prior art, due to the fact that multiple pressing mechanisms are used for respective control, the structure is complex, and operation is tedious are solved.

The invention discloses a horizontal hydraulic non-metal packing machine, and relates to the technical field of non-metal hydraulic packing. A body is included; the feeding conveyor is mounted at the outer part of the machine body; the door opening cylinder is mounted outside the machine body; the bag discharging platform is connected with the machine body, and a motor is arranged in the bag discharging platform; the clamping seat is mounted at the outer part of the feeding conveyor; the contact mechanism is installed on the outer portion of the bag discharging platform, the contact mechanism comprises a circular plate, and a replacement assembly is installed on the outer portion of the circular plate; the pretreatment mechanism comprises a fourth push rod, a connecting rod is installed at the bottom of the fourth push rod, a cylinder is arranged below the connecting rod, the cylinder is sleeved with a sponge shell, and the fourth push rod is used for controlling the cylinder and the sponge shell to ascend and descend. And the purpose of improving the use efficiency of the equipment is achieved.

The utility model relates to the technical field of inventory devices, in particular to an inventory device for sensing access of medical consumables, which comprises an RFID (radio frequency identification) inventory gun body and a grip body, a sealing cover protection mechanism is arranged above the RFID inventory gun body, an elastic abutting mechanism is arranged on the side edge of the grip body, and the elastic abutting mechanism is connected with the RFID inventory gun body. When the checking device for medical consumable access induction is used, the characteristic that a spring is stretched to synchronously generate counter-acting force is matched with the arrangement of transmission of a mechanism assembly; by means of the limiting structure, a worker can make the hand automatically abut against and support the middle position between the grip and the abutting strip when using the device, then the worker can be helped to better grasp the RFID inventory gun through the limiting design, the phenomenon that the device accidentally slips due to the fact that the palm sweats after long-term work is avoided, the overall structural design is ingenious, and the practical effect is good.

The invention relates to the technical field of charging and battery replacing devices, and discloses a new energy ship charging and battery replacing device and a use method thereof.The new energy ship charging and battery replacing device comprises a movable plate rotationally connected to the outer wall of the end, away from a guide shell, of a rotating rod, and a connecting rod is rotationally connected to the outer wall of the rotating rod; a contact conductor is rotationally connected to the outer wall of one end, away from the rotating rod, of the connecting rod; along with further insertion of the plug, the connecting rod drives the inner wall of the contact conductor to contact the outer wall of the plug, further rotation of the connecting rod under the limitation of the plug enables the contact conductor to rotate around the joint with the connecting rod, and at the moment, the torsional spring II accumulates potential energy, so that the contact conductor clings to the outer wall of the plug; and for plugs of different specifications, the plugs can be charged within a certain range through the contact mechanism, so that the adaptability of the device is enhanced to a certain extent, and the construction cost is reduced.

The utility model discloses an oil-immersed circuit breaker short circuit protection tripping mechanism which comprises an excitation conductor, an instantaneous armature, a limiting plate and a reset elastic piece, the instantaneous armature is rotatably arranged on a circuit breaker shell and located on the lower side of the excitation conductor, and the limiting plate is rotatably arranged on one side of the instantaneous armature and is in limiting fit with a contact mechanism of a circuit breaker. A push rod piece used for pushing the limiting plate to rotate is formed on the instantaneous armature, and the reset elastic piece is connected with the instantaneous armature. When a short-circuit fault occurs in the circuit breaker, the instantaneous armature is attracted by electromagnetic force to rotate towards one side of the excitation conductor, and the limiting plate is pushed to rotate through the push rod piece, so that the contact mechanism is triggered to execute tripping and opening actions, and after the short-circuit fault of the circuit breaker is relieved, the instantaneous armature is driven to rotate. And the instantaneous armature can rotate towards one side far away from the excitation conductor under the action of the elastic force of the reset elastic piece, so that the quick reset function of the instantaneous armature is realized, and the use safety and reliability of the product are improved.

The utility model relates to the field of ceramic grinding machines, and discloses an automatic centering ceramic grinding machine which comprises a machine table, a motor is arranged on the inner wall of the top end of the machine table, the output end of the motor is fixedly connected with a rotating disc, an arc groove is formed in the inner wall of the rotating disc, and a contact mechanism is arranged on the inner wall of the arc groove. A supporting frame is arranged at the top end of the machine table, a grinding disc is arranged at the bottom end of the supporting frame, a dust removal assembly is arranged on the side wall of the supporting frame, the contact mechanism comprises a movable rod, the movable rod is slidably connected to the inner wall of the arc groove, and a contact plate is fixedly connected to the top end of the movable rod. According to the utility model, the contact plate is driven to be close to the workpiece through infrared induction of the sensor, the external equipment driving motor, the turntable and the arc groove, so that the grinding and centering are quickly realized, the operation is convenient and fast, the centering efficiency and precision are greatly improved, and a good foundation is laid for subsequent grinding.

This invention discloses a welding device and process for steel manufacturing, relating to the field of steel pipe welding technology. The device includes: a rotating base on which a steel pipe body is centrally placed; an outer welding mechanism is circumferentially mounted on the rotating base; and a liftable inner welding mechanism is suspended above the rotating base. The inner welding mechanism includes an annular shell, an annular barrier, a telescopic component, a drive mechanism, a contact mechanism, a movable frame with a polishing wheel, and an inner welding gun. The annular shell and the annular barrier are coaxially arranged and connected by a rotatable telescopic component. The movable end of the telescopic component extends to the outside of the annular barrier and connects to the movable frame. The inner welding gun is mounted on the movable frame, and the drive mechanism is installed between the annular shell and the polishing wheel. This invention solves the problem of difficult welding on the inner side of steel pipes by coordinating the inner and outer welding mechanisms, and integrates grinding, welding, and polishing processes into one, significantly improving processing efficiency and weld quality.

A moving contact mechanism with a contact support that rotates around a third axis, a moving contact pivotable around a contact axis, and both ends of the contact spring are a third end of the spring and a fourth end of the spring, respectively, which are rotatably connected to the moving contact and the contact support respectively. A geometric axis of the contact spring is a second axis line located on one side of the third axis when the moving contact is normally on or off. The contact spring keeps the moving contact in an on or off state. The moving contact rotates relative to the contact support when repelled, drives the contact spring to rotate around the fourth end of the spring, so that the second axis line swings to the other side of the third axis, and remains in a temporary breaking position.

The application discloses a flat-pressing flat carton die-cutting indentation machine and relates to the technical field of printing. The application is characterized by the following: the cleaning contact mechanism is arranged; the die-cutting knife and the indentation knife on the height adjusting mechanism are driven to perform the downward pressing operation; the connecting frame is synchronously driven by the transmission mechanism to drive the swing plate to swing; the swing plate swings on the surface of the flat carton; the pre-cleaning of the chippings on the flat carton can be realized; the self-ignition of the die-cutting knife and the chippings due to high temperature is avoided; and the swing plate swings on the other side of the die-cutting groove and does not affect the die operation when the die-cutting knife performs the die-cutting operation.

An injection molding machine according to the present disclosure is provided with: a fixed platen on which a fixed mold is provided; an injection unit which is movable in a direction approaching or separating from the fixed mold and has a nozzle capable of injecting a molten material; a nozzle contact mechanism which is disposed on the lower side of the injection unit, and which presses and attaches the nozzle to the fixed mold by applying a driving force to the injection unit to move the injection unit in a direction in which the injection unit approaches the fixed mold; and a connection member, one end of which is attached to the nozzle contact mechanism and the other end of which is attached to the fixed pressure plate, and which connects the nozzle contact mechanism and the fixed pressure plate. The fixed platen has an intersecting surface that intersects a lateral direction that is orthogonal to the vertical direction and the direction of movement of the injection unit. The other end of the connecting member is attached to the intersecting surface in such a manner that, when the connecting member is pulled toward the injection unit side, a rotational force attempting to rotate about an axis passing through the other end of the connecting member and the intersecting surface and along the lateral direction is applied to the connecting member.