12results about How to "Constant clamping force" patented technology

The utility model provides a carrier tape feeder material film recovery mechanism, which comprises a guide module, a material film recovery module and a material film recovery module, and the film collecting module is arranged below the guide module and is used for dragging and recycling the material film. According to the recovery mechanism, the trend of the material film is accurately changed through the guide module, the problem that the material film is disorderly drooped and randomly stacked after a traditional carrier tape feeder is stripped is effectively solved, and the material film can be orderly pulled and recovered; due to the design of the triangular reversing mechanism, stable transition of a material film in the steering process is guaranteed, deviation of the material film in the conveying process can be prevented through matched use of a film pressing rod and a limiting block, and the operation stability of the whole system is improved; through the design of the roller driven by the motor and the pressing assembly, it is ensured that the material film is clamped by uniform and adjustable pressure from the upper side and the lower side in the recycling process, continuous and stable traction is facilitated, the pressure can be automatically adjusted according to the thickness change of the material film, and therefore the compatibility and the processing efficiency of the material films of different specifications are improved.

The invention relates to the technical field of antennas, in particular to a mounting bracket for a communication antenna, which comprises a support rod, a fixed seat, a clamping mechanism and an angle adjusting mechanism, the antenna body is connected to the supporting rod through the fixing base and the clamping mechanism, and the included angle between the antenna body and the supporting rod is adjusted through the angle adjusting mechanism. The clamping mechanism comprises a clamping piece capable of generating elastic deformation, a pre-pressing piston and a pre-pressing spring, the pre-pressing piston and the pre-pressing spring are used for relieving the problem that the clamping force is changed due to thermal expansion and cold contraction, and the stability is improved; and by arranging the pressure adjusting mechanism, the wind speed detection assembly and the control system, the clamping force can be automatically adjusted according to the wind speed, and the stability is improved. By arranging a plurality of clamping pieces, the antenna body can be fixed on the supporting rod more firmly; through the control system, the switching assembly continuously switches the application position of the clamping force and adjusts the clamping force of the clamping piece, and the situation that the communication effect is affected due to loosening is avoided.

The invention relates to a clamping-force-adjustable clamping tool suitable for a magnetically soft alloy thin-wall ring sleeve and a clamping method. The clamping-force-adjustable clamping tool comprises a chuck assembly located at the front end, a pull rod located in the middle and a pressure adjusting air cylinder located at the tail. The chuck assembly is composed of a pneumatic three-jaw chuck body, a sub-jaw, a clamping force measuring assembly and a force measuring auxiliary jaw. The clamping force measuring assembly comprises a force measuring contact and a force measuring sensor; three clamping jaws at the front end of the pneumatic three-jaw chuck main body form a female clamping jaw; the three sub-clamping jaws are fixedly installed at notches in the front ends of the three main clamping jaws respectively, and the inner side faces of the three sub-clamping jaws define a workpiece clamping face. The inner sides of the three female clamping jaws are respectively provided with a radial insertion hole, a force measuring auxiliary jaw is inserted and fixed in each radial insertion hole, the outer end of at least one force measuring auxiliary jaw is provided with a force measuring contact, and the force measuring contact is electrically connected with the force measuring sensor through a connecting wire; before a workpiece is clamped, the inner side faces of the three auxiliary force measuring claws make contact with the clamping rod in a clamping mode, and the clamping force is measured and adjusted in cooperation with adjustment of the air supply pressure. According to the clamping device, the clamping force can be adjusted.

This multi-functional positioning fixture for laser marking includes a base frame with a positioning seat on the base frame. The positioning seat has frustums, and a slide rail is provided between the frustums. A slider is located within the slide rail, and a limit part is provided on the slider. A bolt is installed on the limit part. A mounting bracket is located on the outside of the positioning seat, and the end of the bolt passes through the mounting bracket and connects to a rotating handle. Through the cross-shaped slide rail and the movable slider, the combination design of the clamping block and V-block can simultaneously adapt to the positioning needs of pot handles and hanging ears without changing the fixture. The V-shaped surface of the clamping block matches the shape of the hanging ear, and the V-block, in conjunction with the limit stud, can accurately position pot handles of different sizes, covering various pot models. The rotating handle drives the bolt to achieve rapid displacement of the clamping block and V-block. The spring system maintains a constant clamping force after adjustment, preventing components from loosening during marking. The trapezoidal cross-section of the slide rail and the matching design of the slider ensure smooth movement and anti-deviation capability.

This invention relates to the field of mechanical fastener technology and discloses a heterogeneous material connection and fastening structure, including a connecting bolt. One end of the connecting bolt penetrates a stamped sheet metal housing, and a fastening nut is connected to the end of the connecting bolt penetrating the stamped sheet metal housing. An installation hole is provided on the outer surface of the stamped sheet metal housing. A connecting rubber sleeve is engaged with the outer surface of one end of the connecting bolt, and the end of the connecting bolt with the connecting rubber sleeve penetrates a plastic bracket. A stamped sheet metal part is disposed between the plastic bracket and the stamped sheet metal housing. This heterogeneous material connection and fastening structure, by using a connecting rubber sleeve with a specific groove design and tightly fitting it between the smooth shaft of the connecting bolt and the plastic bracket, effectively absorbs vibration and impact energy from all directions. During assembly, the rubber sleeve, through its elastic deformation and restoring force, avoids stress concentration caused by hard contact, thus extending the service life of the plastic bracket and the connection structure.

The utility model is mainly used for the back section packaging process of a semiconductor chip, and relates to an integrally formed semiconductor packaging fixing clamp, which comprises a first force arm, a second force arm and an elastic part which are integrally formed, and the elastic part extends inwards from the end parts of the first force arm and the second force arm to form an arc-shaped structure. The end parts of the first force arm and the second force arm are opposite to form an opening part which is used for clamping a semiconductor to be packaged. Therefore, the semiconductor to be packaged is clamped through the first force arm, the second force arm and the elastic part, a complex jig and a clamp do not need to be customized according to the size of a chip, the chip cover plate can have constant clamping force through the first force arm and the second force arm, production is facilitated, and use is easy.

The invention provides an optical element cooling device, which is characterized in that two side surfaces, adjacent to a light reflecting surface, of a plate-shaped optical element are respectively matched with the plate surface of a cooling plate in an attaching and pressing manner, and an elastic clamping mechanism is arranged between a fixed seat on a rack and the cooling plate; the elastic clamping force provided by the elastic clamping mechanism is perpendicular to the heat exchange face, matched with the cooling plate in an attached mode, of the optical element. According to the invention, the optical element and the cooling plate are pressed and matched in an attached manner, so that the optical element is subjected to a uniformly distributed load effect, and uniform heat exchange between the optical element and the cooling plate is ensured. The elastic clamping mechanism can automatically compensate the deformation quantity of the optical element when the optical element is affected by thermal expansion and cold contraction, the relatively constant clamping force on the optical element is kept, and the surface precision of the optical element is guaranteed.

The invention relates to an endoscope linear cutting anastomosis auxiliary positioning device which comprises a spring, a first connecting rod is fixedly connected to the top of the spring, a U-shaped clamp is fixedly connected to the end of the first connecting rod, a second connecting rod is fixedly connected to the bottom of the spring, and a U-shaped clamp is fixedly connected to the end of the second connecting rod. A protection assembly is arranged on the side wall of the U-shaped clamp, a clamping assembly is arranged on the outer side of the spring, a limiting assembly is fixedly connected to the top of the clamping assembly, a fixing assembly is fixedly connected to the outer side wall of the first connecting rod and the outer side wall of the second connecting rod, and an anti-skid assembly is fixedly connected to the end of the clamping assembly. The endoscope linear cutting anastomat has the advantages that the endoscope linear cutting anastomat is better positioned through the U-shaped clamp, the clamping force is constant through the spring, additional damage to a patient component is avoided, the accuracy of the endoscope linear cutting anastomat is improved, and the additional damage to a patient is reduced.

The application belongs to the technical field of additive manufacturing, and particularly relates to a metal 3D printing fine wire feeding device and an additive manufacturing equipment comprising the same. The fine wire feeding device comprises a shell assembly, a metal wire guiding assembly and a metal wire driving assembly. The shell assembly surrounds the metal wire driving assembly. The metal wire guiding assembly is installed in the shell assembly along the longitudinal direction. The metal wire penetrates through the metal wire guiding assembly and is fed by the metal wire driving assembly. The metal wire driving assembly comprises a driving wheel assembly, a driven wheel assembly and an anti-rolling assembly. The driving wheel assembly and the driven wheel assembly jointly constitute a clamping and conveying mechanism for the metal wire. The anti-rolling assembly comprises two side wall supporting discs which are symmetrically arranged on both sides of the metal wire and used for limiting the rolling of the metal wire in the horizontal plane. The problems of poor stability of fine metal wire conveying and difficulty in guaranteeing the quality of finished parts are solved.

This invention relates to a clamping fixture and method for adjustable clamping force of thin-walled soft magnetic alloy ring sleeves. The fixture includes a chuck assembly at the front end, a pull rod in the middle, and a pressure regulating cylinder at the rear end. The chuck assembly consists of a pneumatic three-jaw chuck body, sub-jaws, a clamping force measuring component, and a force measuring auxiliary jaw. The clamping force measuring component includes a force measuring contact and a force sensor. The three jaws at the front end of the pneumatic three-jaw chuck body form a mother jaw. The three sub-jaws are respectively fixed in the inner recesses at the front ends of the three mother jaws, and the inner surfaces of the three sub-jaws form a workpiece clamping surface. A radial insertion hole is provided on the inner side of each of the three mother jaws, into which a force measuring auxiliary jaw is inserted. A force measuring contact is installed at the outer end of at least one force measuring auxiliary jaw, and the force measuring contact is electrically connected to the force sensor via a connecting wire. Before clamping the workpiece, the inner surfaces of the three force measuring auxiliary jaws are in clamping contact with the clamping rod. By adjusting the air supply pressure, the clamping force can be measured and adjusted. This invention achieves adjustable clamping force.

The utility model is mainly used for the back section packaging process of a semiconductor chip, and relates to a fixing clamp for packaging a C-shaped bending semiconductor structure, which comprises a first clamping arm, a second clamping arm and an elastic piece, and the elastic piece is arranged between the first clamping arm and the second clamping arm and provides clamping force for mutual clamping of the end parts of the first clamping arm and the second clamping arm; the first clamping arm comprises a first C-shaped bending arm, the first C-shaped bending arm comprises a first included angle and a second included angle, the sum of the first included angle and the second included angle is 180 degrees, and the first clamping arm and the second clamping arm jointly clamp and fix a semiconductor to be packaged through the first fixing part. The fixing clamp is used for replacing a pressing block and a screw for jacking, a complex jig and a clamp do not need to be customized according to the size of the chip, and the chip cover plate can have constant clamping force through the fixing clamp. Meanwhile, by means of the first C-shaped bending arm and the second C-shaped bending arm, a semiconductor packaging mode in a special shape can be well fixed.

This utility model discloses an auxiliary positioning device for a milling machine used in gear production, relating to the field of gear processing technology. It includes a base plate, with fixed seats and bearing seats mounted on both sides of the top of the base plate. A drive spindle is rotatably mounted on the bearing seats via bearings. A T-shaped hole is provided on the base plate and on one side of the bearing seats. A support assembly is provided above the T-shaped hole, and anti-disengagement components are provided on both sides of the support assembly. A first hydraulic push rod is fixed to one side of the fixed seat, and one end of the first hydraulic push rod is connected to a top rod. A pressure sensor is provided at the connection between the first hydraulic push rod and the top rod. A controller is provided on one side of the base plate. In this utility model, the gear shaft with shaft is clamped by the top rod and the center of the drive spindle. The pressure sensor detects the pressure in real time and transmits it to the controller. The controller adjusts the first hydraulic push rod according to a preset value to ensure a constant clamping force, avoiding over-clamping that could deform the workpiece or insufficient clamping force that could cause displacement, thus improving positioning accuracy.