621 results about "Change positions" patented technology

The utility model discloses rotary shuttling transportation mold connecting equipment which comprises a rotating device and a mold, the rotating device is arranged on an injection molding machine, at least one mold lifting and positioning device is arranged on the rotating device, and the mold is arranged on the mold lifting and positioning device and matched with the injection molding machine. According to the rotary shuttling transportation mold connecting equipment, the rotating device is arranged on one side of the injection molding machine, the two molds are installed on the rotating device, the injection molding machine and a worker are located on the corresponding mold sides respectively, and the two molds change positions back and forth on the positions of the injection molding machine and the worker under reciprocating transportation of the rotating device; therefore, when the mold at one end is in corner connection, the mold at the other end is in strip installation, the problem of long waiting time of workers or frequent walking of the workers is avoided, the production efficiency is improved, and the cost of an injection molding machine and the mold can be saved within the same production efficiency of the conventional production mode.

This invention discloses a building material conveying device, relating to the field of transportation technology, which can solve the problem that materials often need to be manually handled when transferred to designated floors. An embodiment of this invention discloses a building material conveying device, including a first lifting frame and a second lifting frame, and a plurality of lifting trays; the first and second lifting frames are arranged side-by-side in parallel, and the single lifting height of both the first and second lifting frames is equal to the height of a single floor; the plurality of lifting trays are evenly distributed on opposite sides of the first and second lifting frames, and the vertical spacing between adjacent lifting trays is the same as the height of a single floor; it also includes a hopper assembly and a repositioning assembly for driving the hopper assembly to rotate and change position; the hopper assembly is sleeved on the repositioning assembly and slidably connected to it vertically; when the first and second lifting frames are in a raised or lowered state, the orthographic projection of the hopper assembly only overlaps with the lifting trays on the first or second lifting frame.

The invention relates to an automatic glue replacing method and device for a glue dispenser and a glue dispensing system. The method comprises the following steps: in response to a glue replacement instruction of a glue replacement and supply mechanism of the dispensing machine, controlling glue self-transfer equipment bearing a glue supply frame provided with a full glue pipe to move close to the dispensing machine; when the glue self-transferring equipment moves to a glue changing position of the glue dispenser, the glue changing and supplying mechanism is controlled to stop supplying glue to the glue dispensing valve mechanism, and the material taking and placing mechanical arm is controlled to take down a glue pipe to be replaced from the glue changing and supplying mechanism and place the glue pipe on a glue supplying frame; and the material taking and placing mechanical arm is controlled to take the full-glue pipe from the glue supply frame and place the full-glue pipe on the glue changing and supplying mechanism, the glue changing and supplying mechanism is controlled to continuously supply glue to the glue dispensing valve mechanism, and automatic glue changing is completed. The automatic glue replacing device can solve the problems that a traditional manual glue replacing mode is low in efficiency, glue mixing or pollution is easily caused, the product quality is often influenced by manual operation errors, and the requirements for high precision and high consistency cannot be met.

The invention discloses multi-axis linkage precision drilling equipment for medical thin-wall pipe fittings, and relates to the technical field of drilling machining equipment, the multi-axis linkage precision drilling equipment is composed of an electric control integration box, a drilling workbench and a supporting bottom plate, and the workbench integrates a vertical drilling assembly, a horizontal drilling assembly and a transfer clamping assembly. The transfer clamping assembly is of an upper-lower double-layer clamping structure and can transversely move, ascend and descend, rotate and change positions, and pipe fitting deformation and repeated clamping errors are avoided. The horizontal drilling assembly can adjust the angle in a multi-stage mode and is matched with side wall multi-direction drilling, the vertical drilling assembly can turn over to adjust the angle to machine inclined holes, and a washing water collecting and draining structure is matched to clean scraps in real time. The equipment is designed for solving the problems that existing equipment cannot adapt to multi-angle drilling of the thin-wall pipe fitting, clamping is prone to deformation, the clamping precision is poor, waste chip cleaning lags behind, and automation and stability are insufficient, multi-axis linkage precision machining is achieved, the structure is compact, operation is stable, the automation degree is high, the high-precision and high-cleanliness machining requirements of the medical thin-wall pipe fitting are met, and the machining efficiency is improved. And the processing efficiency and the product qualification rate are improved.

The utility model discloses an assembling and welding mechanism for a concentrated winding iron core. The device comprises a base, a hollow rotating platform, a first base table and a second base table, the hollow rotating platform is fixed to the base, the first base table and the second base table are fixed to the hollow rotating platform, and the hollow rotating platform rotates by 180 degrees to drive the first base table and the second base table to be interchanged in position. The first base station and the second base station are each provided with a positioning rotating tool, a pneumatic clamping jaw disc and a jacking mechanism in a rotating mode, the positioning rotating tools are used for assembling the single-tooth iron core into the stator, the pneumatic clamping jaw discs are arranged in the positioning rotating tools, the pneumatic clamping jaw discs are used for internally supporting the positioning rotating tools, and the jacking mechanisms are used for jacking the stator out of the positioning rotating tools. According to the utility model, the first base station and the second base station realize stator assembling and welding double stations, the first base station and the second base station rotate to exchange positions, the requirements of avoiding a framework and a coil are met, the welding operation and the assembling operation are continuously circulated, and the production efficiency is improved.

The invention relates to a quick changer (1) for changing an attachment on a construction machine, comprising: a carrier (2), which has a first receptacle (4) for a first coupling element on one side thereof and a second receptacle (5) for a second coupling element on the other side thereof; and a drive device (12) movably arranged at the support (2) in order to move the at least one locking element (13) associated with the first receptacle (4) between an extended locking position and a retracted release or replacement position, a plurality of hydraulic quick couplings being arranged at the drive device (12) in order to supply the additional device with hydraulic fluid. According to the invention, only three hydraulic quick couplings (19A, 19B, 19C) arranged next to one another are arranged on the drive device (12), of which two outer hydraulic quick couplings (19A, 19B) lie in the same plane and in contrast, the inner hydraulic quick coupling (19C) lying therebetween is offset in height upwards.

A length-adjustment device for an adjustment of a longitudinal position of a tool in a tool receiving opening of a tool holder, with at least one exchangeable stop element for a mechanical fixing of the longitudinal position of the tool in the tool receiving opening, with a stop receiving element, supported in a longitudinally movable manner, for receiving the stop element, and with a coupling unit which is configured for an, in particular at least substantially tolerance-free, releasable coupling between the stop element and the stop receiving element along a longitudinal axis of the length-adjustment devicewherein the coupling unit has an exchange position, in which a removal and an insertion of the stop element for creating or releasing the coupling between the stop element and the stop receiving element is enabled, and has a fixing position.,

The utility model discloses a cleaning base station and a cleaning system, and belongs to the technical field of cleaning systems. The cleaning base station comprises a base station body and a driving mechanism installed on the base station body. The cloth changing mechanism is in transmission connection with the driving mechanism and can move relative to the base station body under the driving of the driving mechanism, so that the cloth changing mechanism can move among a changing position, an overturning position and a storage position; and the projections of the replacement position, the turnover position and the storage position on the bottom surface of the base station body are at least partially staggered. The cleaning equipment does not need to wait for the cleaning time of the dirty cleaning part, the overall cleaning time of the cleaning equipment can be shortened, and the user experience is improved.

The invention relates to the technical field of injection molding machines, and discloses a vertical thermoplastic material injection molding machine and an operation method thereof.The injection molding machine comprises a rack and an operation table, the operation table is installed at the upper end of the rack, and an injection molding mechanism used for processing plastic particle raw materials is installed at the upper end of the rack; a mold mechanism is installed on the operation table and located at the lower end of the injection molding mechanism, a power mechanism is installed at the lower end of the mold mechanism, the mold mechanism comprises an upper mold base and a lower mold base which correspond to each other, the lower mold base is located at the upper end of the rack, and the power mechanism drives the mold mechanism to replace the position and is matched with the injection molding mechanism to complete injection molding operation. According to the injection molding machine, the ejection linkage assembly and the power mechanism are in transmission logic combination, the transmission block is used for pushing the push-out sliding plate to drive the telescopic hinge rod to act, synchronous ejection of the multiple ejection rods is achieved in cooperation with the traction rope and the reset spring, and an independent driving unit does not need to be additionally arranged.

The utility model belongs to the field of disc stacking machines, and provides a belt type disc stacking machine which comprises a machine frame, a conveying belt, a transmission mechanism and a transmission mechanism. The grabbing mechanism is arranged on the rack and located above the conveying belt, the movable end of the grabbing mechanism is connected with a clamping jaw and a magnetic attraction block which are arranged in a height difference mode, and the grabbing mechanism can drive the clamping jaw and the magnetic attraction block to turn over and change positions. Compared with the prior art, the device has the advantages that the turnover grabbing mechanism is utilized, the device can easily deal with products of various shapes and materials, tools do not need to be frequently replaced or setting does not need to be adjusted, and therefore the production cost is reduced; through the design of integrating multiple functions of lifting, positioning, pushing, transferring and the like, the time loss of intermediate links is reduced, the circulation speed of products is increased, then the output rate of the whole production line is increased, product damage caused by human factors is effectively avoided, and the consistency of the quality of each finished product is guaranteed.

The present invention provides a precision machining center, relating to the field of CNC machining technology, comprising a tool magazine and a tool changing mechanism. The tool magazine is provided with a plurality of cutting tools fixed to a cutter disc in a circular array. When the tool magazine rotates to a tool changing position, the tool changing mechanism removes the cutting tools that have moved to the tool changing position. A liquid dispensing member is dynamically sealed on the cylindrical surface of the cutter disc, and a liquid dispensing channel is provided within the liquid dispensing member. The liquid dispensing member is connected to a universal bamboo tube that delivers cutting fluid to the cutting area. The cutting tools are vertically plugged and mounted on the end face of the cutter disc. Each cutting tool is correspondingly provided with a control valve that controls the input of the corresponding cutting fluid. When a cutting tool that has moved to the tool changing position is removed by the tool changing mechanism, the corresponding control valve is opened, allowing the corresponding cutting fluid to flow into the liquid dispensing channel and then into the universal bamboo tube. The present invention can automatically adapt to the cutting fluid preset for the corresponding cutting tool, thereby improving machining accuracy.

The utility model provides a handheld plate chamfering machine which comprises a tool bit. The tool bit is connected with a driving device, a positioning mechanism is arranged on the front portion of the tool bit, a positioning structure sliding in the radial direction of the tool bit is arranged on the positioning mechanism and used for being matched with a workpiece for positioning, and the tool bit is provided with a machining surface. The positioning mechanism is arranged to position a plate in two directions, so that the position of the plate cannot be changed when the corners of the plate are treated, meanwhile, the corners of the plate are cut through the cutting knife, corner cutting is accurate, the device is simple in structure and convenient to use, and a handheld structure is convenient to carry.

The utility model relates to the technical field of injection molds, and discloses a mold with a front mold ejection function, the mold comprises a first injection mold and a second injection mold, the first injection mold and the second injection mold are both provided with lower molds, the positions of the two lower molds are mutually changed in the injection molding process, and the two lower molds are used for two times of injection molding; the first injection mold further comprises an upper mold, a driving mechanism used for ejecting out the product is arranged outside the upper mold, and the product is pushed out of the interior of the upper mold through the driving mechanism arranged outside the upper mold and left in the lower mold. And when the positions of the two lower molds arranged on the first injection mold and the second injection mold are exchanged, the products can be driven to move at the same time, and then the secondary injection molding process is completed.

The invention discloses a pneumatic PSC quick-change positioning zero point system which comprises a shell structure, one end of the shell structure is used for clamping a PSC connecting handle, a clamping mechanism is coaxially and movably arranged in the shell structure, the clamping mechanism can unlock or lock the PSC connecting handle through axial movement, and a guide groove is formed in the side wall of the clamping mechanism; the clamping mechanism is movably arranged in the shell structure and symmetrically arranged on the two sides of the clamping mechanism, the side wall, close to the clamping mechanism, of the clamping mechanism is provided with a pushing part, and the clamping mechanism comprises a clamping piece; the clamping mechanism moves towards the direction close to the second end, so that the clamping piece enters the guide groove and is extruded by the pushing part, the clamping mechanism is made to be close to the second end, the clamping mechanism is limited to lock the PSC connecting handle, rapid locking is achieved, and enough clamping force is guaranteed. The clamping mechanism moves towards the direction close to the first end, the pushing part is far away from the clamping piece, the clamping piece is separated from the guide groove, the clamping mechanism is not limited any more, rapid unlocking is achieved, and the PSC connecting handle is convenient to disassemble.

This utility model provides a square tube processing electroplating corrosion-resistant treatment device, belonging to the field of electroplating equipment technology. The utility model includes an electroplating tank, a drain pipe on one side of the electroplating tank, a control valve on the outer surface of the drain pipe, and an auxiliary device at the top of the electroplating tank. The auxiliary device includes two support rods, with sliding rods slidably connected to the inner walls of the support rods. A frame rod is fixedly connected to the top of the sliding rods, and a tank cylinder is fixedly connected to one end of the two support rods that are close to each other. By setting up the auxiliary device, the utility model allows the square tube to be inserted into the tank cylinder with perforated surfaces. During electroplating, the lower half of the tank cylinder's surface enters the electroplating solution. A servo motor drives the tank cylinder to rotate slowly, causing the square tube inside the tank cylinder to slide or roll and change position, improving the contact effect between the square tube surface and the electroplating solution, and enhancing the effectiveness and comprehensiveness of electroplating treatment on the square tube surface using the electroplating device.

The utility model discloses movable cutter mouth structure device, include: punch mechanism, the punch mechanism includes base, machine table, upper die and lower die, and lower die sliding installation is in the base, and upper die sliding installation is in the machine table bottom, and be provided with the punch for stamping on the upper die, and be provided with the cutter mouth corresponding with the punch on the lower die, still include the movable structure for adjusting the cutter mouth position, movable structure includes the slider and screw rod of setting in the lower die bottom, the bottom sliding installation of slider is in the base, and the screw rod is used for driving slider to change position on the base to drive lower die, cutter mouth and punch position change. In the case where satisfying the appearance structure of the multiple notches of the product that can cut out, also guarantee the structure size of product, and the die appearance size is small, and production is stable, and the stamping speed is fast, and cutter mouth consistency, production efficiency is high, and this structure is suitable for mass production.

The utility model relates to the technical field of double-track conveyors, in particular to a mountain double-track conveyor with a track adjusting function, which comprises a conveyor body, tracks used for being matched with the double-track conveyor to operate are arranged at the bottom end of the conveyor body, and racks used for being matched with the conveyor body to move are arranged between the tracks. The rack is provided with a driving piece used for moving the conveyor body. A rail adjusting assembly used for moving and running of the double-rail conveyor is arranged on the rail. Through the arrangement of the adjusting assembly, in the process that the driving piece drives the whole conveyor to move and pass through the adjusting section where the distance between the rails is changed, under the limiting effect of the limiting groove on the rotating wheel, the movable rod moves on the connecting block through the bent plate to change the position; therefore, the interval position of the idler wheels between the double rails is changed along with the change of the distance between the adjusting sections, the whole conveyor has the rail adjusting capacity, and convenience is brought to building of the whole double-rail conveying equipment.

The utility model discloses a novel auxiliary steering device of a combined type TBM (tunnel boring machine), which comprises a base and an anti-stress plate arranged on the base, wherein a jack acting surface is arranged on the anti-stress plate; the anti-stress plate comprises a stress plate body, a connecting column arranged below the stress plate body, and an auxiliary fixing ring which hoops the connecting column and is connected to the base. An arc-shaped adjusting groove is formed in the base, a plurality of anti-stress plate fixing point positions are arranged in the arc-shaped adjusting groove, each fixing point position is a groove formed in the arc-shaped adjusting groove in a concave mode, and the size of each groove is matched with the size of the connecting column. According to the utility model, the reverse stress plate of which the position can be changed continuously is matched with the hydraulic jack to work, so that the underground steering operation of the shield tunneling machine is more convenient.

A swing-type tool magazine system, which is disposed on a machine tool, includes a tool storage device in a tool storage area and a tool changing device in the tool changing area. The tool storage device has at least a tool placement assembly swingably connected to the reversing module, and a reversing module driving the tool placement assembly to swing along an XY plane between a first and a second positions. At the second position, the tool changing device drives the tool placement assembly to move along an X-axis, switching the tool placement assembly between the second position and a tool changing position, allowing the spindle to remove or return a tool. A rotation device is further included to drive a bracket of the tool placement assembly to rotate, aligning the tool with the tool changing direction of the spindle, achieving a multi-directional tool changing function.

The application belongs to the technical field of building structure damage identification, and particularly relates to a model-free detection method for lateral stiffness mutation position of a high-rise structure, comprising the following steps: step one, obtaining the displacement time history response of the same height interval measuring points in the same vertical line of the high-rise structure in the same horizontal direction; step two, calculating the second-order statistical moment of the relative displacement of each measuring point according to the time history response, and solving the lower-to-upper value corresponding to the statistical moment of the measuring point; step three, taking the height of each measuring point as the horizontal coordinate and the lower-to-upper value corresponding to the statistical moment of the measuring point as the vertical coordinate to draw a curve; and step four, observing the mutation of the curve to identify the lateral stiffness mutation position.

The utility model relates to a brake handle structure and an electric two-wheeled vehicle. The brake handle structure comprises a brake handle mounting seat and a brake handle, the brake handle mounting base comprises a mounting base body, a first mounting part and a second mounting part, the first mounting part and the second mounting part are arranged on the two sides of the mounting base body, and the first mounting part is used for being mounted on a handlebar of the electric two-wheeled vehicle; the brake handle is hinged to the second mounting part; a permanent magnet is arranged on the brake handle; a linear Hall detection circuit correspondingly matched with the permanent magnet is arranged on the mounting seat main body or / and the second mounting part; when the brake handle is pressed or rotated, the position of the permanent magnet changes along with the movement of the brake handle, and the linear Hall detection circuit is used for generating a linear voltage signal according to the position change of the permanent magnet and transmitting the linear voltage signal to the control circuit. The electric two-wheeled vehicle control system can solve the problems that when an electric two-wheeled vehicle is decelerated or braked, the vehicle cannot be accurately controlled according to the change of the opening degree of a brake handle, the energy recovery efficiency is low, and the riding feeling of a rider is affected.

The utility model discloses automatic detection equipment for six surfaces of a chip, which is applied to the field of chip detection and comprises a scanning table, a supporting gear is arranged at the top of the scanning table, a supporting frame is fixedly connected to the top of the supporting gear, four first detection lenses are mounted in the supporting frame, and a second detection lens is mounted in the supporting frame. A second detection lens is further installed in the supporting frame. The top of the scanning table is provided with a motor through a support. The output end of the motor is fixedly sleeved with a driving gear engaged with the supporting gear. Through the arrangement of the first detection lens, the second detection lens and the scanning table, detection of six surfaces and the interior of the chip can be met at a time, and the detection efficiency and the working efficiency of the chip can be improved. Meanwhile, a motor is arranged to drive a driving gear to rotate, the driving gear drives a supporting gear to drive a supporting frame to rotate, the supporting frame rotates to drive four first detection lenses to change positions, and four 90-degree right angles of the chip can be detected.

The worm injection mold comprises a movable mold core and a stationary mold core, the stationary mold core is provided with two worm forming stations capable of alternating positions, the movable mold core is provided with an injection station and a demolding mechanism corresponding to the two worm forming stations, the injection station is used for injection molding towards one of the worm forming stations during the first time of mold closing, the first driver drives the two worm forming stations to change positions during mold opening, the injection station is used for injection molding towards the other worm forming station during the second time of mold closing, and the demolding mechanism drives the injection molded worm to rotate and demold at the same time of injection molding, and the reciprocating is repeated, and the integration of worm forming and demolding is realized in each mold closing process. The worm injection mold disclosed by the application replaces the existing manual demolding with automatic demolding, reduces the labor intensity of the operator, and improves the production efficiency.

Embodiments of the present application provide a numerical control machine tool tool replacement method, device, electronic equipment and readable storage medium, the method comprises: receiving selection tool selection instruction information, obtaining the tool table of the tool magazine; according to the tool table and selection instruction information determine target tool seat identification and first tool changing position tool seat identification;Wherein, the target tool seat identification is the position identification of the target tool to be replaced in the tool magazine, the first tool changing position tool seat identification is the position identification of the tool of the tool chain rotating mechanism in the main shaft based on the selection instruction information;According to the target tool seat identification and the first tool changing position tool seat identification determine the target rotation step number of the tool chain rotating mechanism;Monitoring the real-time rotation step number of the tool chain rotating mechanism;According to the target rotation step number and the real-time rotation step number determine whether to stop rotating the tool chain rotating mechanism;When stopping rotating the tool chain rotating mechanism, the target tool is replaced to the tool seat of the main shaft. Embodiments of the present application improve the reliability of numerical control machine tool.

The utility model provides air treatment equipment which comprises a shell provided with a mounting surface and a first air outlet, and the first air outlet is located in the side, away from the ground, of the mounting surface; the adjusting assembly comprises an air guide blade which is movably arranged; and the driving assembly is in transmission connection with the adjusting assembly, the driving assembly drives the air guide blades to change in position, and the driving assembly further drives the adjusting assembly to change in position relative to the first air outlet. According to the air treatment equipment, the first air outlet far away from the ground is formed, the first air outlet is combined with the natural convection law, cold air is evenly diffused to the whole room from the high position during refrigeration, then the indoor temperature is rapidly reduced, and efficient air circulation is achieved; at the moment, the air supply distance is long, and cold air can be supplied to a far area of a room; and the air outlet is not easy to touch after being mounted, so that man-made interference is reduced.

The utility model relates to the technical field of transportation operation, and particularly discloses a staggered conveying device which comprises a fixed-height bearing platform. A floating bearing platform; the transverse direct-drive mechanism is connected to the two bearing platforms and used for driving the two bearing platforms to alternately change positions between the first station and the second station; the longitudinal guide mechanism is used for guiding the floating bearing platform to move upwards at the first station and the second station until the floating bearing platform is flush with the fixed-height bearing platform; and the moving mechanism moves downwards between the first station and the second station to the position lower than the fixed-height bearing platform so as to avoid the fixed-height bearing platform. The dislocation conveying device can effectively solve the problem that an existing conveying device is only provided with one bearing platform, so that the conveying operation efficiency is low.

The automatic feeding and discharging device for sleeve shaft machining comprises a bearing table and a taking and placing mechanism, and the bearing table is used for containing a tray for containing a semi-finished sleeve shaft; the picking and placing mechanism comprises a five-axis mechanical arm, and the free end of the five-axis mechanical arm can be adjusted at multiple angles. The taking and placing assembly comprises a base fixed to the free end and gripping apparatuses installed at the two ends of the base, the two gripping apparatuses are the first gripping apparatus and the second gripping apparatus respectively, the first gripping apparatus is used for gripping the sleeve shaft of the semi-finished product, and the second gripping apparatus is used for gripping the sleeve shaft of the finished product; the base can rotate around the first axis, and when the base rotates, the first gripping apparatus and the second gripping apparatus are driven to relatively rotate around the first axis, so that the positions of the first gripping apparatus and the second gripping apparatus are exchanged. According to the device, automatic feeding and discharging can be conducted in the sleeve shaft machining process, feeding and discharging are conducted synchronously, and the machining efficiency is improved.

The utility model relates to a safe ladder stand for side slope construction belongs to side slope construction technical field. Mainly include: including support pipe, stand, pedal, connecting cylinder, screw rod, open end collar, connecting mechanism, the utility model pedal rear end is hinged with support pipe through connecting mechanism, adjusts the length that screw rod projects from connecting cylinder through rotating screw rod, and then adjusts the height of pedal front end on support pipe, makes the angle of pedal adjustable, thereby makes pedal keep level when installing, improves the security of device, solved the problem that the angle of pedal of traditional ladder stand is inconvertible, leads to the need to rebuild ladder stand after ladder stand changes position, time -consuming and labor -intensive.

The invention belongs to the technical field of air conditioner condenser pipe production, and particularly relates to an automatic discharging expanding and shrinking machine for air conditioner condenser pipe production. The device comprises a conveying roller, an expanding and shrinking device and a cutting device, the expanding and shrinking device is composed of an overturning pushing assembly, a pipe expanding base, a pipe shrinking base and a preheating assembly, the overturning pushing assembly can drive the pipe expanding base and the pipe shrinking base to rotate in the circumferential direction for transposition, and when pipe expanding is needed, the pipe expanding base is in butt joint with an air conditioner condenser pipe material; when pipe contraction is needed, the pipe contraction seat is in butt joint with the air conditioner condenser pipe material part; the overturning pushing assembly is used for driving the pipe expanding base / the pipe contracting base to conduct axial displacement, and pipe expanding and pipe contracting machining on the air conditioner condenser pipe material piece is achieved. The cut-off device is used for conducting cut-off operation on the air conditioner condenser pipe material piece subjected to pipe expanding or pipe shrinking machining, after cut-off, the overturning pushing assembly can be used for driving the pipe expanding base and the pipe shrinking base to rotate to be staggered from the air conditioner condenser pipe material piece, and cut materials are automatically discharged under the conveying effect of the conveying roller.