7results about How to "Guaranteed synchronous motion" patented technology

The utility model is applicable to the technical field of feeding devices, and provides a material stacking and feeding device which comprises a rack, a plurality of material frame assemblies are arranged on the rack in parallel at intervals in the left-right direction, each material frame assembly comprises a front end plate, a rear end plate, a sliding plate and a push plate which are parallel to one another, and the rear side face of each push plate is fixedly connected with a push rod extending backwards. The rear end of the push rod is fixedly connected with a movable rod, and the rack is provided with a driving assembly for driving the movable rod to move front and back. According to the material stacking and feeding device, the push plate in each material frame assembly is driven by the push rods in a push-pull mode, the multiple push rods are jointly connected to the same movable rod, the rigid push plates and the push rods are used for replacing springs to push materials, and the situation that feeding is affected by sheet position deviation caused by elastic force changes of the springs is avoided; and meanwhile, the push rods of the multiple sets of material frame assemblies are driven by one set of driving device to move synchronously, synchronous movement of the multiple push plates can be guaranteed, meanwhile, use of driving elements is reduced, the probability of failures is lower, and the using effect is better.

The invention discloses a pressure vessel welding device facilitating butt joint, and relates to the technical field of welding. The problem of butt joint accuracy is solved. The device specifically comprises a base, the top of the base is provided with a transverse feeding part used for feeding and discharging a pressure container, a portal frame is fixedly installed at the top of the base, the bottom of the portal frame is in transmission fit with a supporting plate through a lifting part, and the bottom of the supporting plate is provided with a butt joint part; and a welding gun used for fixedly mounting the pressure container is fixedly mounted on the inner side wall of one side of the portal frame. A plurality of groups of pressure contact wheels in a circular array are arranged, and two pressure contact wheels are arranged in each group and are respectively in contact with the side walls of the tank body and the seal head of the pressure vessel, so that the coaxiality of the tank body and the seal head of the pressure vessel is ensured by utilizing a side edge limiting form, and the pressure vessel can also rotate by the pressure contact wheels, so that the coaxiality of the tank body and the seal head of the pressure vessel is ensured. Therefore, multi-angle limiting can be carried out in the rolling process, the coaxiality is further guaranteed, and the follow-up welding quality is guaranteed.

The utility model relates to a novel elevator with double counterweight housings, which comprises an elevator car and a counterweight mechanism, the elevator car is connected with the counterweight mechanism through a steel wire rope and a double-wheel tractor, the counterweight mechanism comprises two counterweight units, the two counterweight units are connected through a pair of fixing plates, and the two counterweight units are connected through a pair of fixing plates. The steel wire rope is connected to the surface of the uppermost fixing plate. The double counterweight units are arranged in parallel, so that the occupied width of the counterweight units is reduced, the width of the lift car is increased, the split type balancing weights and the stand columns are installed in a combined mode through the notches, fast increase and decrease of balance weights are supported, and different load-carrying requirements are met. A vertical guide system formed by the guide rods and the sleeves restrains the counterweight housing from shaking, and synchronous movement of the double counterweight units is guaranteed. The threaded rod lifting mechanism supports overall height adjustment of the counterweight housing, and the counterweight block is convenient to overhaul or replace. And the limiting rod and the end cover are double-locked, so that the clump weight is prevented from falling off due to vibration, and the operation safety is improved.

The utility model discloses a film supporting and releasing mechanism for a packaging machine, and relates to the technical field of film packaging machines. According to the utility model, one of the pair of film supporting rollers is configured to be a structure capable of translating relative to the other film supporting roller, and after the film roll on the film supporting roller is unwound, the movable film supporting roller is far away from the other film supporting roller, so that the distance between the pair of film supporting rollers is increased, and the roll core of the film roll after the film is unwound can fall off from the space between the film supporting rollers; the roll core is automatically removed, the roll core does not need to be manually removed, then the convenience of film roll replacement is improved, the efficiency of film roll replacement is improved, and a foundation is provided for automatic film replacement. And meanwhile, the function of adaptively adjusting the distance between the film supporting rollers along with the change of the roll diameter of the film roll can be achieved.

The invention relates to the technical field of cold traps, in particular to an efficient diffusion pump cold trap which comprises a cold trap shell, and the cold trap shell comprises a cold trap shell body and a cold trap cover body. The condensation assembly comprises a cylindrical main condensation cavity, a plurality of sub condensation cavities and a coiled pipe type condensation pipe; a main condensation cavity is formed in the main condensation cavity; one end of each sub-condensation cavity extends into the main condensation cavity in the radial direction of the main condensation cavity to form a condensation connecting part, and the other end of each sub-condensation cavity extends outwards in the radial direction of the main condensation cavity to form a condensation diffusion part; an edge condensation sub-cavity is formed in the condensation sub-cavity; the plurality of sub condensation cavities are respectively communicated with the main condensation cavity; the coiled pipe type condensation pipe is in contact with the inner wall of the main condensation cavity; and the coil pipe type condensation pipe is also respectively contacted with the condensation connecting parts of the plurality of sub condensation cavities. Oil vapor and other gas molecules generated by the diffusion pump can be efficiently condensed, and the trapping, adsorption and condensation efficiency of the oil vapor is remarkably improved.

The utility model relates to a self -adjusting drainage grab bucket, including two opposite setting bucket body, through the support pull rod with the upper crosspiece of bucket body articulation, be located in the upper crosspiece lower extreme and with two bucket body articulation lower crosspiece, be equipped with upper pulley set on the upper crosspiece, be equipped with lower pulley set on the lower crosspiece, the lower pulley set includes the lower pin shaft setting on the lower crosspiece, the sequential arrangement of several lower pulley pieces along the lower pin shaft axial, the lower pulley piece is opened and is equipped with the perforation for the lower pin shaft to pass through on, the diameter of perforation is greater than the diameter of lower pin shaft. The utility model discloses when using, make the clearance between lower pulley piece and lower pin shaft, when the opening and closing steel wire rope in the lifting process bucket body closes and picks up the material and appears skew, can pass through the slight slippage of lower pulley piece, alleviate the inclination angle, avoid because the inclination angle is bigger, lead to the steel wire rope appears the groove and the breakage of the occurrence, make lower pulley piece not use bearing simultaneously, avoid the damage because bearing rust.

The invention discloses an adjustable paper lifting and pressing mechanism for printing equipment, and relates to the technical field of printing equipment.The adjustable paper lifting and pressing mechanism comprises a base, a driving mechanism is rotationally connected to the middle of the top of the base, a lifting mechanism is inserted into the driving mechanism, and a placing plate is arranged at the top end of the lifting mechanism; supporting frames are arranged on the left side and the right side of the top of the base, adjusting mechanisms are rotationally connected to the inner walls of the left side and the right side of each supporting frame, the bottom ends of the adjusting mechanisms are in threaded connection with a paper pressing mechanism, a blowing-flat mechanism transversely penetrates through the interior of the paper pressing mechanism, and a sliding rail is arranged in the middle of the top wall of the base. According to the adjustable paper lifting and pressing mechanism for the printing equipment, the lifting mechanism can accurately control the height of the containing plate and achieve fine adjustment of the position of printing paper, the adjusting mechanism can achieve fine adjustment of the position of the paper pressing mechanism and guarantee that even pressure is exerted on the paper pressing mechanism, an electric heating wire is used for heating the pressing plate to be matched with the blowing-flat mechanism, the flattening operation efficiency can be improved, and the practicability is high. And the final printing quality is improved.