31results about How to "Guaranteed punching accuracy" patented technology

The invention discloses a carrier tape production line and a production method, and belongs to the field of carrier tapes. The carrier tape production line comprises a composite extruder, an automatic adjusting type carrier tape forming machine, processing equipment and a winding machine; the automatic adjusting type carrier tape forming machine comprises a first position automatic adjusting assembly, a first machine table, a forming roller assembly, a roller type flattening assembly, a second position automatic adjusting assembly, a hot air gun, a guide wheel, a controller and a display screen, and the first machine table is arranged at the adjusting end of the first position automatic adjusting assembly; the hot air gun is arranged at the adjusting end of the second position automatic adjusting assembly, the roller type flattening assembly comprises a fixed roller set and an adjustable roller set which are oppositely arranged, and the adjustable roller set is provided with a third position automatic adjusting assembly. The first position automatic adjusting assembly, the forming roller assembly, the roller type flattening assembly, the second position automatic adjusting assembly and the hot air gun are all electrically connected with the controller, and the controller is electrically connected with the display screen. The overall carrier tape production efficiency and the product quality are high.

The utility model belongs to the technical field of angle steel production, and particularly relates to an angle steel production steel tank punching device which comprises a plurality of supporting legs and a workbench installed on the tops of the supporting legs, and a discharging hole is vertically formed in the workbench. The positioning table is fixedly mounted at the top of the workbench, the top of the positioning table is triangular, and the positioning table is used for preliminarily positioning angle steel needing to be punched; the groove is formed in the bottom of the positioning table; according to the punching machine, the groove and the through holes are formed in the positioning table on the lower portion, the vertical discharging hole is formed in the workbench, and the collecting box is arranged below the workbench, so that waste generated in the punching process can automatically fall into the collecting box along a preset path; by means of the design, the problem that waste needs to be cleaned manually through a traditional device is effectively solved, time and labor are saved, the cleanliness of the working environment is kept, the production intermittent time is shortened, and therefore the overall operation efficiency is improved.

The utility model provides a kind of human resource management archives auxiliary threading device, it is related to the technical field of archives management, including base, left stand plate, first sliding slot, first bearing, first lifting plate, screw rod, hand wheel, upper antiskid block, lower antiskid block, arc hole and punch assembly etc.;Traditional manual binding needs page by page alignment, manual punching, for the archives of greater thickness, it is cumbersome and time-consuming to operate.And the device realizes automatic punching through punch assembly, multiple drill bits can work simultaneously, and punching operation of multiple hole positions is completed at one time, which greatly reduces the punching time and significantly improves the overall efficiency of archives binding.Operators do not need to repeat punching, threading and other mechanical actions, effectively reducing hand fatigue caused by long-term operation, reducing the work failure rate and reducing labor intensity.

The utility model discloses a spring machine steel wire shearing mechanism with an adjustable cutting diameter, relates to the technical field of spring production equipment, and aims to solve the problems that an existing device adopts staggered movement of a movable cutting nipper and a fixed cutting nipper to shear spring steel, but the existing device can only cut spring steel with a single diameter and is low in universality. The shearing notch is formed in the front end of the shearing arm; the lower tool apron is mounted at the lower part of the interior of the shearing notch; the hydraulic cylinder is installed above the front end of the shearing arm, the output end of the hydraulic cylinder penetrates through and extends into the shearing notch and is provided with an installation base, a punching mechanism is installed at the lower end of the installation base and comprises an upper tool apron and a punching blade, the punching blade is arranged at the lower end of the upper tool apron, and the upper tool apron is provided with a lower tool apron. The punching blade is connected with the upper tool apron in a welded mode.

The utility model discloses a portable punching device for building decoration material processing, which comprises a bottom plate, the middle end of the top of the bottom plate is fixedly connected with a frame, the top of the frame is in threaded connection with a threaded rod, the top of the threaded rod is fixedly connected with a rotating disc, the surface of the threaded rod is in threaded connection with a lifting rod, and the rotating disc is fixedly connected with the rotating disc. A protective cover is fixedly connected to the bottom of the lifting rod, an electric telescopic rod is fixedly mounted at the top of an inner cavity of the protective cover through bolts, a perforating machine is fixedly connected to the output end of the electric telescopic rod through bolts, and a drill rod is arranged at the bottom of the perforating machine. The rotating disc is rotated to drive the threaded rod to rotate, the lifting rod slides up and down along the sliding groove of the frame, the position is fixed through cooperation with the limiting nut, and the punching height can be accurately adjusted; and the vertical position of the perforating machine is further finely adjusted through the electric telescopic rod, the perforating precision of materials with different thicknesses is ensured, mechanical feeding can be achieved, manual handheld operation is avoided, and convenience is improved.

The utility model discloses a high -frequency punching device, including base, the movable punching knife device is installed on base upside, the fixed knife is installed on base downside, and the movable punching knife is equipped on the top of fixed knife, movable punching knife device includes movable punching knife, and the outer periphery of the cutter bar of movable punching knife is sleeved with reset spring, and the outer periphery of reset spring is equipped with the installation pipe, movable punching knife cooperation fixed knife cutting packing bag is driven by the compressed gas that enters from the air inlet pipe, and after the compressed gas enters from the air inlet pipe and drives movable punching knife, discharges from the air vent of installation pipe side, and the solenoid valve of control compressed gas opening and closing is connected to the air inlet pipe. The utility model discloses through the compressed gas from the air inlet pipe, discharges from the air vent of installation pipe side, avoids the resistance that the compressed gas remains stagnation installation pipe inside produces to the time of reset spring movable punching knife spring reset thereby, thereby realizes the technical purpose of high -frequency punching.

The utility model discloses a punching device for motor processing, which belongs to the technical field of motor processing and comprises a base, a rectangular groove is arranged on the base, a two-way screw is rotatably mounted in the rectangular groove, two driving blocks are in threaded fit with the outer surface of the two-way screw, and the two driving blocks are both matched with the rectangular groove. Two clamping assemblies are arranged on the base in a sliding fit mode and comprise mounting plates and clamping plates, two first through holes are formed in each mounting plate, two transverse rods are arranged on each clamping plate, springs are arranged on the outer surfaces of the transverse rods in a matched mode, the outer surfaces of one ends of the transverse rods are matched with the first through holes, and the top ends of the driving blocks are connected with the bottoms of the mounting plates. Through the structural design of the clamping assembly, the fixing and clamping effect on the motor component can be effectively improved, and the problem that the fixing and clamping effect on the motor component is poor is solved.

The utility model discloses a full -automatic pearl puncher, including puncher base and be provided with the mobile support arm of puncher base upper side four corner position department, the mobile support arm's lower side front and back both ends middle position department is provided with the receiving hopper respectively, the middle position department of receiving hopper is provided with the centralizing dish, the upper side position department of mobile support arm's left and right two ends is provided with the feeding mechanical arm of connecting external power supply power supply, and is connected through the tension spring between mobile clamp bar and fixed clamp bar, under the synergic effect of contact ring and pressure spring, when placing the pearl of different shape size, tension spring can be according to the actual contour and size of pearl and carry out the telescopic adjustment of self -adaptation. For example to oval pearl, the elastic deformation of spring can fill up the gap produced because of the irregular shape, ensure that the pearl is closely clamped, and do not need like traditional equipment, for different shape pearl frequently change special clamp, greatly improved the convenience of operation.

The utility model discloses a plastic box drilling clamp which comprises a supporting base, a positioning groove is formed in the upper side of the supporting base, a lower die is arranged in the positioning groove, a limiting groove is formed in the upper side of the lower die, an upper die is arranged on the upper side of the lower die, a limiting pressing block is arranged on the lower side face of the upper die, and a mounting plate is movably arranged on the upper side face of the upper die. Punching heads are vertically and fixedly arranged on the left side and the right side of the lower side face of the mounting plate respectively and penetrate through the upper die in a sliding mode, first through holes corresponding to the punching heads are formed in the left side and the right side of the upper die respectively, and a jacking structure is movably arranged at the position, corresponding to the bottom of the lower die, in the supporting base and can penetrate through the bottom of the lower die to be in sliding connection with the lower die. A plastic box to be punched is pressed down and fixed through cooperation of the upper die and the lower die, the phenomenon that the punched position is pulled is reduced during punching, the punching quality is guaranteed, the waste phenomenon is reduced, meanwhile, through arrangement of the jacking structure, the punched plastic box is ejected out, a worker can take the plastic box conveniently, and the working efficiency is improved.

The utility model discloses a kind of punching equipment for brake disc production, it is related to brake disc processing technical field, including equipment main body, lifting frame, workbench and lifting ring, the equipment main body bottom is fixedly installed with slide rail, spring rod is fixedly connected in slide rail interior, spring rod is slidably connected with left and right two sliding blocks, wherein sliding block is clamped in slide rail, the upper end of sliding block is all fixedly connected with half cone body, the upper end of half cone body is all fixedly connected with limit block, wherein through servo cylinder drive lifting ring to move up, make half cone body drive clamping block to move to middle, can automatically and stably clamping brake disc, avoid brake disc displacement when punching, guarantee punching precision, save time and energy of artificial clamping simultaneously, in addition, with the aid of servo motor one, two, respectively drive mobile frame one to move forward and backward, mobile frame two moves left and right, and then drive moving block and punching drill head to change position flexibly, can accurately punch brake disc different position, satisfy various punching needs.

The utility model discloses a pipe fitting positioning tool, and belongs to the technical field of pipe fitting machining equipment. Comprising a bottom plate, a fixed positioning frame is fixedly arranged on one side of the upper end of the bottom plate, a movable positioning frame is arranged on the other side of the upper end of the bottom plate, guide sleeves are arranged at the front end and the rear end of the movable positioning frame, guide rails are fixedly arranged at the front end and the rear end of the fixed positioning frame, and one end of each guide rail penetrates through the corresponding guide sleeve; a movable plate is arranged on the guide rail and is in sliding connection with the guide rail through a sliding seat. The pipe fitting positioning tool solves the problem that in the prior art, due to the fact that supporting blocks of the pipe fitting positioning tool are fixedly arranged, the distance between the supporting blocks cannot be adjusted according to the length of a pipe fitting, and the use flexibility is not high, transmission is conducted on the lead screw in a motor driving mode, and then the movable block and the movable positioning frame are driven to move horizontally. The distance between the movable positioning frame and the fixed positioning frame is convenient to adjust, positioning can be carried out according to pipe fittings with different lengths, and the use flexibility is high.

The invention provides high-precision punching equipment for mold manufacturing, and relates to the technical field of mold frame drilling. The punching mechanism is mounted on the punching frame; the number of the stabilizing mechanisms is two, and the two stabilizing mechanisms are installed on the punching mechanism. The number of the auxiliary mechanisms is two, and the two auxiliary mechanisms are installed on the rectangular base. The control mechanism is mounted on the punching frame; the number of the electric cylinders is two, and the two electric cylinders are fixedly installed on the punching frame. The lifting plate is fixedly mounted at the bottoms of the two electric cylinders; the punching drill bit is mounted on the motor; when the die frame is used for punching, the transparent plate must be in a falling state, a strong protection effect is achieved, and the situation that a broken punching drill bit and metal chippings accidentally injure workers is avoided; the problem that cut metal chippings and broken drill bits are prone to splashing out, and consequently nearby workers are prone to accidental injury is solved.

The utility model relates to the technical field of wheel cover support tubular beam machining, in particular to a punching tool for a wheel cover support tubular beam. According to the technical scheme, the wheel casing support tubular beam punching tool comprises a pressing plate, a fixing plate, a bottom plate and a limiting seat, the fixing plate is fixed to the bottom plate, an air cylinder is fixed to the bottom plate through the fixing plate, a push plate is installed on the air cylinder through a push rod, a limiting plate is installed on the push plate, and the limiting seat is installed on the bottom plate. And a supporting frame is erected on the side, away from the fixing plate, of the bottom plate, the supporting frame penetrates through the limiting base, the supporting frame is sleeved with a pipe fitting, a pressing plate is erected above the limiting base, and a punch and a guide column are arranged on the lower surface of the pressing plate. According to the utility model, the workpiece can be conveniently supported and fixed, so that the workpiece is prevented from being deformed during processing, and the effect of reducing the production cost is achieved.

The utility model discloses a hydraulic oil cylinder barrel punching tool, which belongs to the technical field of hydraulic oil cylinder processing, and comprises a supporting box body, a limiting assembly, a supporting assembly and a pushing assembly, the limiting assembly, the supporting assembly and the pushing assembly are arranged on the supporting box body, the limiting assembly comprises a fixing plate and a plurality of limiting sleeves arranged on the fixing plate, and the limiting sleeves are coaxially arranged. A receding groove is formed in the top of the side wall of each limiting sleeve in the axial direction, through grooves are correspondingly formed in the side walls of the other limiting sleeves except the limiting sleeve located in the innermost portion, the supporting assembly comprises supporting blocks arranged on the two opposite sides of the cylinder barrel in a sliding mode, the supporting blocks can penetrate through the through grooves, the supporting blocks are provided with abutting inclined faces used for abutting against the cylinder barrel, and the abutting inclined faces abut against the cylinder barrel. The pushing and abutting assembly comprises a pushing and abutting plate and a pushing and abutting piece used for driving the pushing and abutting plate to move so as to extrude and fix the cylinder barrel to the fixing plate. The supporting block supports the cylinder barrel, deformation is reduced, the punching precision is improved, the multiple limiting sleeves can meet the punching requirements of various cylinder barrels, and universality is wide.

The invention relates to the technical field of punching and positioning, and discloses a flange plate quick positioning hole machining device which comprises a horizontally-arranged workbench, a flange plate support is arranged on the left side of the top of the workbench, and a flange plate is rotationally connected to the flange plate support on the workbench; through the arrangement of a positioning plug pin and a first spring, after the positioning plug pin is aligned to a first flange hole, the positioning plug pin moves downwards under the elastic action of the first spring to drive a first traction assembly to drag a first convex block to extrude a second convex block to move towards a third convex block, so that the second convex block and the third convex block are connected, and a positioning shaft sleeve and a positioning sleeve are fixed; at the moment, the angle orientation of the positioning rod is limited, in the next punching process of the flange plate, it is not needed to manually rotate the positioning rod with the positioning shaft sleeve as the axis to find the next punching position, the punching position can be accurately and rapidly found by directly rotating the flange plate, the punching precision is guaranteed, and meanwhile the punching efficiency is improved.

The utility model is applicable to the technical field of packaging bag processing, and provides a punching device for packaging bag processing, which comprises a main base, the top of the main base is connected with a top plate through a support column, a collecting seat is mounted in the center of the top of the main base, a collecting groove is formed in the collecting seat, and a collecting box is slidably placed in the collecting groove. A punching groove is formed in the top of the collecting base and communicates with the collecting groove, and a lifting punching assembly is installed over the punching groove and located on the top of the top plate. Adjusting assemblies are installed at the positions, on the four sides of the collecting base, of the top of the main base and comprise adjusting motors, the output shaft ends of the adjusting motors are connected with threaded rods, the side walls of the threaded rods are in threaded connection with threaded cylinders, and the ends of the threaded cylinders are fixedly connected with folded plates. The adjusting motor controls the threaded rod to rotate, so that the threaded cylinder drives the folded plate to move, the position of the packaging bag on the collecting seat is adjusted through the pushing plate, the position, to be punched, of the packaging bag is moved to the punching groove, and the subsequent punching precision is guaranteed.

The utility model relates to the technical field of punching equipment, in particular to punching equipment which is used for punching the side wall of a pipe fitting and comprises a supporting assembly and a punching assembly. The at least two groups of punching devices are arranged at intervals in the length direction of the sliding part; the punching device comprises first feeding assemblies and a punching assembly, and the at least two first feeding assemblies are oppositely arranged to form a feeding channel of a pipe fitting; the material stirring assembly can abut against the pipe fittings on the first feeding assembly so as to drive the pipe fittings to move; the positioning driving device comprises a connecting rod and a positioning driving assembly; one end of the positioning driving assembly is connected with one group of punching devices, the driving end of the positioning driving assembly is connected with the connecting rod, and the positioning driving assembly drives the punching devices to move along the connecting rod so as to adjust the length of the feeding channel; full-automatic operation of feeding, positioning, punching and discharging of the pipe fitting is achieved, on the basis that the punching precision is guaranteed, the duration of the pipe fitting punching process is shortened, the labor cost is reduced, and meanwhile the adaptability of punching equipment is improved.

The utility model discloses a connecting rod blank large and small hole drilling and boring device which comprises a machine tool body, two hydraulic cylinders are fixedly installed at the top end of the machine tool body, drilling and boring equipment is fixedly installed at the bottom ends of the two hydraulic cylinders, a pair of supporting rods is fixedly welded to each of the two side walls of the machine tool body, and sliding rods are arranged in two sliding grooves. The two ends of the sliding rod are fixedly welded to the supporting rods at the corresponding positions correspondingly, and a movable base is arranged on the machining table top of the machine tool body. Through the cooperation of the supporting rod, the sliding rod, the moving seat, the moving block, the clamp and other parts, in the machining process of one connecting rod blank, the machined connecting rod blank is disassembled, the next connecting rod blank to be machined is installed, the machine tool shutdown time caused by the fact that the connecting rod blank is disassembled and assembled back and forth is saved, and the machining efficiency is improved. And meanwhile, a worker has sufficient time to install and fix a connecting rod blank on the clamp, the punching precision of the connecting rod is guaranteed, and the defective rate is greatly reduced.

The utility model discloses a punching die with high utilization rate, which relates to the technical field of dies and comprises an upper die holder and a lower die holder, an adjusting mechanism is arranged on the end face of the upper die holder close to the lower die holder, a base plate is arranged on the end face of the lower die holder close to the upper die holder, and a second tooth fixing plate is fixed on the base plate. The adjusting mechanism and the second tooth fixing plate are correspondingly arranged in a matched mode. The punching die is high in utilization rate. The punching mode is controlled through meshing or dislocation of the adjusting mechanism and the second tooth fixing plate, synchronous trimming and punching are achieved, and the production efficiency is improved. The air cylinder drives the first tooth fixing plate to act, automatic control is achieved in combination with an inductor, and manual intervention is reduced; the pressing plate and the trimming punch are matched with the female die knife edge, so that the punching precision is ensured; and the nitrogen spring and the floating block optimize the blanking process, and the operation convenience is improved. The guide columns enhance the mold closing stability and prolong the service life of the mold; the overall structure is compact, the utilization rate is high, and mass production is facilitated.

The utility model discloses a high-precision punching die for machining a U-shaped frame of a swivel chair, which belongs to the technical field of dies, comprises an upper die holder and a lower die holder, and is characterized in that an upper die plate is fixedly arranged at the lower part of the upper die holder, front pressing blocks are symmetrically and fixedly arranged at the lower part of the upper die plate, a front sliding block is arranged at the upper part of the lower die holder in a sliding manner, and the front pressing blocks are positioned above the rear part of the front sliding block; a transition plate is fixedly arranged on the front portion of the front sliding block, a rear clamping base is fixedly arranged on the front portion of the transition plate, a front clamping base is fixedly arranged on the upper portion of the lower die base, the front clamping base corresponds to the rear clamping base in position, clamping grooves are formed in the front portion of the rear clamping base and the rear portion of the front clamping base, and the clamping grooves are in an arc shape. The front pressing block is located above the front portion of the rear sliding block, the rear pressing block is located above the rear portion of the rear sliding block, the rear pressing block is located behind the front pressing block, and the punching needle is fixedly arranged in the middle of the rear sliding block. According to the punching device, the stability of the U-shaped frame is effectively guaranteed, the accuracy of forward movement of the punching needle is effectively guaranteed, and the punching precision is effectively guaranteed.

The utility model discloses an aluminum casting blanking die, which relates to the technical field of blanking dies and comprises a lower die holder, an upper die holder is arranged above the lower die holder, vertical guide posts are fixed at four corners of the upper end face of the lower die holder, guide cylinders are fixed at the four corners of the upper die holder corresponding to the guide posts, and the guide cylinders are fixed on the lower die holder. The guide column is vertically inserted into the guide cylinder; a lubricating pipe is detachably fixed to the top of the guide column, an oil storage sponge filled with lubricating oil is placed in the lubricating pipe, a movable cavity is formed in the oil storage sponge, an extrusion ball is arranged in the movable cavity, and an oil outlet through which oil flows out is formed in the surface of the lubricating pipe; the inner wall of the guide cylinder is provided with a threaded groove for oil liquid to remain. The punching die is provided with a self-lubricating structure, abrasion between the guide column and the guide cylinder can be reduced, and the punching precision of the punching die used for aluminum castings for a long time can be guaranteed.

The utility model discloses an automobile sealing ring punching device which comprises a base, a hydraulic cylinder is arranged on the upper side face of the base, a fixing base is arranged on a piston rod of the hydraulic cylinder, a drilling assembly is arranged at the front end of the fixing base, and an air compressor is arranged at the position, behind the drilling assembly, of the upper side face of the fixing base. The air compressor communicates with a blowing assembly through a connecting pipe, compressed air generated by the air compressor acts on a drilling assembly through the blowing assembly to remove scraps, the drilling assembly comprises a mounting seat fixed to the upper side face of a fixing seat, and a bearing seat penetrating through the fixing seat is arranged on the lower side face of the mounting seat; compared with the prior art, compressed air is generated through the air compressor and acts on the drill rod through the air blowing assembly, the drill rod can be cooled, drilling scraps attached to the drill rod can be blown away, drilling errors caused by the fact that the scraps are attached to the drill rod are avoided, and the using effect of the punching device is improved.

The utility model discloses a laser automatic sprue cutting assembly, and relates to the technical field of injection molding and punching. The device comprises a bottom plate and a mounting plate fixed at the rear part of the left side of the bottom plate, a punching air cylinder is fixed to the rear portion of the upper end face of the bottom plate, a pneumatic suction tool is arranged at the position above the front portion of the punching air cylinder, a punching positioning jig is arranged at the front portion of the upper end face of the bottom plate, L-shaped plates located on the left side and the right side of the bottom plate are arranged on the left portion and the right portion below the pneumatic suction tool, and a baffle is arranged right behind the bottom plate. Transplanting air cylinders are fixed to the left and right parts of the front end face of the baffle. A laser frame is arranged in front of the electric lifting frame. The punching positioning jig is driven to the position below the laser frame through the punching air cylinder, so that an injection molding structure is quickly punched, punching precision and efficiency are improved, and meanwhile, the injection molding structure can be pre-pressed and the punched injection molding structure can be carried through the vertical movement and adsorption functions of the pneumatic suction tool.

The application relates to the bus duct processing technical field, in particular to a bus duct bus bar automatic punching and shearing and bending integrated numerical control equipment, which comprises an integrated numerical control equipment composed of a rack, a machine base, a material conveying frame, a material bundling seat, a bending structure and a punching and shearing structure; the bending structure is arranged at the output end of the material bundling seat; and the punching and shearing structure is arranged on one side of the material bundling seat; the punching and shearing structure comprises a sliding base, a punching and shearing head and a scraping sleeve; the sliding base is provided with a linkage assembly connected with the scraping sleeve; one side of the sliding base is provided with a guide plate abutting and matching with the linkage assembly; and the inner side of the scraping sleeve is provided with a scraping groove matched with the punching and shearing head. The bus duct bus bar automatic punching and shearing and bending integrated numerical control equipment is automatically driven to move upwards on the scraping sleeve when the sliding base is retracted through the cooperation of the linkage assembly and the guide plate, the punching and shearing head is scraped and cleaned and shielded and protected, manual intervention is not needed, the safety and the automation degree of the equipment are improved, and the advantages of automatic cleaning and protection are achieved.

The application discloses an aluminum alloy punching device and relates to the technical field of aluminum alloy processing. The aluminum alloy punching device comprises a feeding conveying frame for inputting aluminum alloy plates to be punched and a discharging conveying frame for outputting punched aluminum alloy plates. A punching plate is arranged between the feeding conveying frame and the discharging conveying frame, and a plurality of punching die sets are sequentially arranged on the punching plate. The aluminum alloy punching device further comprises a translation die set, which is used for driving the punching plate to move so as to switch different punching die sets to punch aluminum alloy plates. In the process of conveying the aluminum alloy plates from the feeding conveying frame to the discharging conveying frame, when it is necessary to punch aluminum alloy parts of different shapes, the aluminum alloy punching device can drive the punching plate to move through the translation die set, and then different punching die sets are switched to move to a punching end. Different punching die sets correspond to different dies, and then aluminum alloy parts of different shapes are punched.

The present invention discloses a punching jig for a large-span steel box bridge, which relates to the technical field of bridges, and comprises an upper contact plate and a lower contact plate, wherein the interior of the upper contact plate and the lower contact plate are provided with evenly arranged positioning holes, and both sides of the upper contact plate and the lower contact plate are fixedly connected with fixing ears, wherein a screw is movably inserted into the interior of the fixing ear, and a spring is sleeved in the middle of the outer surface of the screw, and the two ends of the screw are threadedly connected with a shock-absorbing block and a nut in sequence from the inside to the outside. The punching jig for a large-span steel box bridge realizes the function of limiting the T-steel of the bridge, is conducive to the punching operation, ensures the punching accuracy, improves the work efficiency, facilitates the ejection work of the ejection device, saves manpower, has strong practicality, greatly facilitates the installation and disassembly of the punching jig, and further facilitates the placement and taking of the T-steel of the bridge, can be applied to steels of different specifications, and is conducive to the maintenance and care of the later equipment.

The present invention discloses a special machine for milling half holes of brake shoes in the field of brake shoe punching, comprising a workbench with a power part, a punching head, a clamping plate, a bottom supporting plate, a compression part, a rotating plate, and a plurality of pressure plates, wherein the end of the pressure plate is pressed against the brake shoe, and the top surface of the bottom supporting plate is slidably matched with an adsorption plate for adsorbing debris on the pressure plate, and the adsorption plate is located below the brake shoe; when the compression part drives the plurality of pressure plates to move toward the middle at the same time, the pressure plates are made to shake at the same time, so as to facilitate the reciprocating adsorption plates to adsorb the limiting part of the pressure plates; in the present application, the contact position between the pressure plate and the brake shoe is retracted and cleaned, and after the cleaning is completed, the brake shoe is easily re-placed to avoid debris on the bottom of the next brake shoe after it is placed, and the bottom supporting method of the brake shoe and the pressure plate is used, which effectively reduces the influence of the debris on the next brake shoe.

The utility model provides a packaging sealing film punching and forming device which comprises a machine frame and further comprises a winding and unwinding assembly, a guiding and limiting assembly, tension adjusting assemblies, a forming and punching assembly and a discharging and collecting assembly. The tension adjusting assembly adjusts the tension force of the sealing film, so that the tension force of the sealing film is effectively guaranteed, the cutting precision of the sealing film is guaranteed, through cooperative work of the discharging and collecting assemblies, after the film is punched through the forming and punching assembly, the sealing film can be stored on a collecting column, and the sealing film is prevented from being damaged. Therefore, the sealing film is prevented from directly falling off, the stacking workload in the later period is increased, the workload of workers is effectively reduced, and the production efficiency is improved.

The utility model belongs to the technical field of punching processing of metal pipes, and particularly relates to a rotary positioning device suitable for punching processing, which comprises a machine table, a rotary positioning device and a rotary positioning device, the lifting assembly comprises a lifting linear motor and a lifting seat, the lifting linear motor is arranged on one side of the positioning jig, the lifting seat is connected to the output end of the lifting linear motor, the lifting seat is provided with a first check block and a second check block which are oppositely arranged, and a buffer space is formed between the first check block and the second check block; the buffer assembly comprises a buffer sliding table, a buffer spring and an extension connecting piece, the buffer sliding table is movably arranged in the buffer space, the buffer spring is connected between the buffer sliding table and the first check block, and the extension connecting piece is connected to the surface, opposite to the lifting base, of the buffer sliding table; a rotating assembly; and the clamping assembly is arranged on the rotating frame. According to the rotary positioning device, the angle of the metal pipe is automatically adjusted, so that the position adjusting efficiency of the metal pipe is improved, and the punching precision of the metal pipe is ensured.

The invention discloses a carrier tape positioning and punching die, and belongs to the field of carrier tapes, the carrier tape positioning and punching die comprises an upper die and a lower die which are matched up and down, the lower die is provided with a guide plate and a limiting plate, the limiting plate is located above the guide plate, and a conveying channel for a carrier tape to pass through is formed between the limiting plate and the guide plate; the top of the guide plate is provided with a plurality of positioning guide grooves used for conveying and guiding the carrier tape at intervals in the length direction of the guide plate, the upper die is provided with a pressing plate, the bottom of the pressing plate is provided with a plurality of pockets acting on the carrier tape and protruding blocks used for positioning the pockets of the carrier tape, a punching needle set is arranged in the middle of the upper die, and the punching needle set penetrates through the protruding blocks during punching. According to the carrier tape positioning and punching die, through the arrangement of the protruding block, before punching operation is conducted, the position of a pocket is fixed through the protruding block, then punching is conducted, the pocket is directly positioned through the protruding block, and the punching precision can be greatly improved without a complex structure.