21results about How to "Accurate limit" patented technology

The utility model belongs to PCB board processing technical field especially is a kind of PCB board anti-shaking with insert frame type jig, including fixed base, the top of fixed base is separately provided with two sets of positioning frame and SMT jig, the outer surface of SMT jig is in contact with the inner wall of positioning frame, the upper surface of fixed base is fixedly connected with two sets of positioning column, the inside of SMT jig is provided with two PCB boards, the inner wall of each PCB board is in contact with the outer surface of positioning column, the top of SMT jig is provided with steel sheet, the inside of SMT jig is provided with two groups of magnet block, the inside of steel sheet is provided with two magnet plates, the bottom surface of each magnet plate is in contact with the upper surface of magnet block, by fixed base and positioning frame, SMT jig can be stably supported and positioned, avoid its deviation in the operation process, with the positioning column of fixed base cooperation SMT jig, can realize accurate location to PCB board, prevent PCB board from shaking, solve the printing deviation problem caused by unstable artificial attachment adhesive.

The utility model provides a kind of headrest with cosmetic mirror, car seat and vehicle, it is related to the technical field of automobile parts, the headrest includes headrest body, cosmetic mirror subassembly, damping device and limiting device, and headrest body rear side is equipped with accommodating cavity;Cosmetic mirror subassembly is reversibly set in accommodating cavity by pivot, including triangular installation body and cosmetic mirror, installation body has adjacent first surface and second surface, first surface fixed cosmetic mirror, and second surface is the decorative surface consistent with the curvature of headrest rear side outer surface.Cosmetic mirror subassembly can be switched between the use state that cosmetic mirror is exposed and flush with headrest and the storage state that decorative surface is exposed and flush with headrest.The design realizes the balance of hidden storage and convenient use of cosmetic mirror, flush with headrest surface when storage, stable adhesion without space when use, solve the problem that traditional cosmetic mirror is complicated to operate and occupies space, improve practicality and aesthetic property, especially suitable for rear passenger use.

This invention discloses a sensing spring adjustment mechanism for mask mounting, belonging to the field of semiconductor lithography equipment technology. It includes a mounting base, a rotating shaft rotatably mounted on the mounting base, and a detection lever fixedly connected to the rotating shaft. Double torsion springs are sleeved at both ends of the rotating shaft, with the middle connecting end of the double torsion spring abutting against the bottom of the mounting base. A translational limiting mechanism is provided at the bottom of the mounting base, cooperating with the connecting end of the double torsion spring to guide and radially limit the movement of the connecting end. This invention uses double torsion springs instead of the traditional single-sided spring structure, providing a more balanced and stable reset force for the detection lever, ensuring the consistency and accuracy of the detection lever's reset action. Simultaneously, the double-sided support structure significantly reduces the risk of large deformation of the spring due to external force interference, fundamentally avoiding the problem of the spring detaching from the preset mounting slot.

The utility model discloses a clamping device for metal steel pipe processing, which comprises a steel pipe clamping device, the two sides of the top of the steel pipe clamping device are fixedly connected with support rings, the inner sides of the support rings are rotatably connected with metal rods, and the surfaces of the metal rods are fixedly connected with hold-down rings. A servo motor is started, the servo motor drives a second bevel wheel to rotate, the second bevel wheel drives a first bevel wheel to rotate, the first bevel wheel drives a screw to rotate, the screw drives a lifting plate to move upwards, the lifting plate drives a toothed plate to move upwards, and the toothed plate moves to drive a gear to rotate. The gear rotates to drive the metal rod to turn over, the metal rod turns over to drive the pressing ring to press the steel pipe, the steel pipe can be fully fixed, the steel pipe can be clamped and fixed, follow-up machining and cutting are facilitated, an existing manual clamping mode is replaced, and therefore the efficient and automatic clamping effect is achieved.

The application relates to the technical field of robot-assisted equipment, in particular to a robot unpacking in-out material trolley drag chain which comprises a drag chain body and a ground support. The fixed end of the drag chain body is connected with an in-out material trolley, and the ground support is provided with a sliding guide rail. The drag chain body is connected by multiple chain links into a bendable chain structure, is provided with a anti-falling groove, is provided with a reinforcing rib assembly in the chain link, and is provided with a buffer structure between adjacent chain links. Limiting blocks are arranged on the two sides of the chain link and are guided by cooperating with the guide rollers in the guide rail through connecting rods. The reinforcing rib assembly comprises longitudinal and staggered reinforcing ribs and has high strength. The buffer mechanism comprises a buffer sleeve, a limiting sleeve and a buffer pad and is used for buffering. The drag chain has good anti-falling, buffering and guiding performances, high strength and can guarantee stable operation of the in-out material trolley.

This application relates to the technical field of clamping devices for loading platforms, and discloses a clamping device for a stacker crane loading platform, which includes a mounting frame, a first clamping frame, and a second clamping frame. The mounting frame is mounted on the loading platform, forming a loading area between it and the platform. Both the first and second clamping frames are mounted on the mounting frame and move towards or away from each other synchronously via a power unit. A clamping area is formed between the first and second clamping frames, and this clamping area is located within the loading area. This application improves the stability when conveying filter rod boxes.

The utility model belongs to the field of pulverizer especially a kind of tool bit structure and high-speed pulverizer, when existing or approximate round, spherical and other surface smooth object in material, it is easy to roll in its pulverizing cavity, it is difficult to effectively stay in the action area of blade, thereby leading to effective pulverizing time reduction, make its pulverizing efficiency not high problem, present and propose following scheme, it includes blade body, the outer wall of the blade body is provided with multiple protruding mounting end;Multiple pulverizing blades are used to carry out pulverizing operation, multiple the pulverizing blades are all fixed by bolt setting in the mounting end of blade body, the outer wall of the blade body and close to the side of pulverizing blade is all provided with multiple limit bolt, inside lower plate will swing, to effectively press the material in pulverizing area, so as to solve the problem that round or spherical material is easy to roll due to surface smooth, it is difficult to be fixed in the action area of tool head, make effective pulverizing time reduction.

The utility model relates to profile processing technical field especially relates to a kind of positioning structure of cavity profile machining, including base, fixed X-axis fixed positioning mechanism, X-axis dynamic positioning mechanism, Y-axis fixed positioning mechanism, Y-axis dynamic positioning mechanism and Z-axis driving mechanism are equipped on the base, the X-axis fixed positioning mechanism and X-axis dynamic positioning mechanism are along the length direction interval arrangement of the base, the Y-axis fixed positioning mechanism and the Y-axis dynamic positioning mechanism are along the width direction interval arrangement of the base;Z-axis lower arm is fixedly arranged on the output shaft of Z-axis driving mechanism, Z-axis lower arm is driven along vertical axis rotation while moving in vertical direction under the drive of Z-axis driving mechanism.The utility model has the beneficial effects that: realize the multidirectional clamping of cavity profile, ensure the stability of cavity profile positioning;Avoid the feeding of cavity profile to cause obstruction.

The utility model relates to visual inspection technical field discloses a kind of product visual inspection devices, including workbench, the horizontal linear guide rail is fixedly installed in workbench top side, the vertical linear guide rail is fixedly installed in horizontal linear guide rail slider top, the camera is provided in vertical linear guide rail slider side;The utility model is through the synergic effect of electric push rod, top plate, fixed base, linkage rod, connecting seat and clamping rod etc. component, can be to product stable clamping fixed, in product rotation process, ensure that product will not occur to shake or displacement, ensure the accuracy of detection result, through the cooperation of limiting slide block and limiting sliding slot, accurate guide and limiting for the movement of clamping rod are provided, make clamping action more stable, reliable, through the mutual cooperation of electric push rod and motor, the automatic clamping and rotation of product are realized, reduce manual labor intensity, improve the degree of automation of detection process.

This invention relates to the field of auxiliary positioning technology for construction molds, and discloses a centrifugal forming anti-deviation positioning device for pipe piles. The device includes a base, a support assembly on the upper surface of the base, a hydraulic cylinder fixedly connected inside the support assembly, a push plate fixedly mounted at the output end of the hydraulic cylinder, a limit cap fixedly connected to the top of a connecting column, a limit plate fixedly connected to the bottom of the connecting column, rollers installed on the inner wall of the limit plate, and a spring mounted on the outer wall of the connecting column. One end of the spring is fixedly connected to the lower surface of the push plate, and the other end is fixedly connected to the outer wall of the limit plate. In this invention, by activating the hydraulic cylinder to push the push plate downwards, the spring is compressed during the movement of the push plate, which limits the vertical displacement of the roller and stabilizes the rotation state of the roller. This prevents the roller from jumping up and down due to centrifugal force during high-speed rotation, ensuring stable centrifugal forming of the pipe pile and improving the forming quality.

The utility model discloses a kind of copper powder evenness devices, the utility model relates to copper powder evenness technical field.It includes mounting base, copper powder evenness mechanism for the preparation of lithium battery composite copper current collector is provided on the mounting base, copper powder evenness mechanism includes: limiting component, including the support plate of the fixed mounting base upper end surface, the utility model starts first electric push rod, the telescopic end of first electric push rod drives roller shaft support and limiting roller shaft move in horizontal direction, adjust the position of limiting roller shaft, so that it can accurately limit composite copper current collector, prevent it from deviating in moving process, can adapt to different width and specification composite copper current collector, ensure that it always remains in correct position in preparation process, improve the quality and consistency of product, wherein using snap connection and bolt fixed mode, so that the replacement operation of wiping sponge is simple and fast, without using professional tool, reduce the downtime of equipment.

The utility model provides a quick assembly and disassembly type swivel joint relates to swivel joint technical field, including the mounting bush, the first limit ring is fixedly connected with the mounting bush outer surface, the movable bush is sleeved with the mounting bush outer surface, the rotary connection pipe is sleeved with the mounting bush inboard. In the utility model, when connecting the mounting bush and the rotary connection pipe, first need to move the movable bush to the active state, provide the space for the insertion of rotary connection pipe, after promoting the movable bush, the rotary connection pipe can enter the mounting bush smoothly, the force that adds promotes the interaction of movable ball and movable rod, forms the activity space, and further creates the condition for the insertion of rotary connection pipe, after the insertion of rotary connection pipe, the elasticity of spring makes the movable bush restore the original position, promotes movable ball movement, further drives movable rod displacement, until movable ball is guided limit groove, ensure that the rotary connection pipe is accurate limit, prevent the separation, limit groove not only limit the separation, still guarantee that the rotary connection pipe can rotate freely after the insertion.

The utility model relates to the field of quail egg sorting discloses a kind of quail egg sorting equipment, including containing groove, the containing groove is opened in the top surface of workbench, the rear side of workbench is fixed with drive motor, the output shaft of drive motor extends to containing groove inside one end, the output shaft of drive motor is fixed with sorting frame one end, the inside of sorting frame is detachably provided with screening screen, the left side of sorting frame is fixed with electric push rod, the telescopic rod of electric push rod is fixed with push plate one end, the right side of push plate is fixed with several push blocks, the inner wall of sorting frame is fixed with connecting column.In the utility model, through the synergies of electric push rod, push plate, push block, connecting column, limit strip and spring, the actual size of quail egg can be dynamically matched, so that the sorting gap can be flexibly adjusted according to the actual size of quail egg, and different specifications of quail egg can be sorted.

The utility model relates to the technical field of semiconductor material processing, and disclose a kind of for silicon rod end face processing fixing device, including first fixture box, hinge and second fixture box, the first fixture box outer surface is equipped with first slot, the first slot is equipped with same multiple, the first fixture box outer surface is equipped with first clamping groove and second clamping groove, the first clamping groove and second clamping groove are penetrated multiple the first slot, the first fixture box outer surface is fixedly installed with extension block.This for silicon rod end face processing fixing device, when placing silicon rod body, according to the diameter size of silicon rod suitable first slot and second slot combination are selected, for the silicon rod of larger diameter, select larger distance slot, for the silicon rod of smaller diameter, select smaller distance slot, the design of decreasing equidistance distribution greatly improves the versatility of fixing device, can adapt to different diameter specifications silicon rod, without replacing different fixture, reduce the production cost and the time of replacing fixture, improve production efficiency.

The application relates to a metal strip slitting machine, which comprises a base, a guide limiting mechanism, a longitudinal shearing assembly and a separation guide assembly are sequentially and spacedly arranged on the base along the length direction of the base, the guide limiting mechanism is used for guiding and limiting the metal strip, the longitudinal shearing assembly is used for cutting the metal strip into strips, and the separation guide assembly is used for separating and guiding the strip-shaped metal strip. The application can realize accurate guiding and limiting of the metal strip, and effectively prevents the metal strip from being deviated in the conveying process.

This utility model discloses a limiting structure for the injection stroke of a twin-bar, twin-motor injection molding machine, including a tailstock and a headstock. The tailstock and headstock are fixed together by four square-arranged tie rods. A middle frame is slidably connected to a lead screw. Limiting sleeves for blocking and limiting the middle frame are fixedly sleeved on the four square-arranged tie rods. The limiting sleeves are cylindrical in shape. This structure uses a double-limiting structure to solve problems such as deviations that are prone to occur in dual-drive structures. The advantages are that this ensures more precise limiting on both sides, more balanced force distribution, and can serve as a zero point for injection zeroing.

This utility model provides a corrugated board flattening device for corrugated paper processing, relating to the technical field of corrugated paper processing equipment. It includes a protective cylinder assembly, which consists of two arc-shaped flattening cylinders connected by a connecting bolt. It also includes a combined roller assembly, which comprises a connecting roller and drive connecting seats on both sides. The connecting roller and drive connecting seats of the combined roller assembly are connected via a first connecting flange and a second connecting flange, achieving modular assembly. This design allows for convenient disassembly and assembly of the connecting roller, enabling quick replacement of different specifications of connecting rollers according to processing needs, improving equipment adaptability. The flange connection structure is robust, ensuring smooth power transmission from the drive connecting seat to the connecting roller, guaranteeing a stable and efficient flattening process. Simultaneously, the standardized flange interface simplifies the installation process, reduces operational difficulty, facilitates equipment maintenance and upgrades, and enhances the flexibility and practicality of the device.

The utility model discloses a kind of vehicle precision casting mould frame convenient to position, comprising: precision casting mould frame, the precision casting mould frame includes connecting plate, the top of the connecting plate is fixedly connected with mould frame plate, the top of the mould frame plate is provided with mould, the bottom of the mould is fixedly connected with clamping rod, the bottom of the clamping rod is through mould frame plate and extends to the inside of mould frame plate, surface positioning mechanism, the surface positioning mechanism is set in the top of connecting plate, fixed mechanism, the fixed mechanism includes push rod, the push rod is set in the two sides of mould frame plate front and back face. The utility model can fix mould by setting fixed mechanism, lock it firmly on mould frame plate, effectively resist high temperature, high pressure and mechanical vibration in casting process, avoid module loosening displacement, improve the fixed strength and stability of mould frame to module, provide reliable guarantee for high-precision production of automobile parts.

This utility model relates to the field of cast iron cutting technology, and discloses a fixed-length cutting device for processing cast iron parts. It includes a base, a cutting mechanism at the top of the base, a centering mechanism at the bottom of the base, a sliding mechanism at the top of the base, and collecting mechanisms on both outer sides of the base. The centering mechanism includes a rotating column, which is rotatably connected to the bottom of the base. A connecting plate is fixedly connected to the outside of the rotating column, and connecting rods are rotatably connected to both outer sides of the connecting plate. A clamping plate is rotatably connected to the two connecting rods. In this utility model, the rotating column drives the connecting plate to rotate, and the centering block at the bottom of the support frame is made of a soft material that directly contacts the cast iron part. This achieves precise positioning and centering operations while preventing damage to the cast iron part, thus improving production efficiency and economic benefits.