34results about How to "Fast clamping" patented technology

The utility model discloses a universal joint mounting device capable of accurately positioning, relates to the technical field of universal joint mounting, and aims to solve the problems that an existing device has limitation in the aspect of adapting to quick clamping and positioning of cross shafts with different sizes, and the mounting efficiency of a universal joint needs to be improved. A plurality of supporting rods are fixedly connected to the upper surface of the supporting bottom plate, a containing plate is fixedly connected to the upper ends of the supporting rods, a movable base plate is arranged between the supporting bottom plate and the containing plate, and the two ends of the lower surface of the movable base plate are each fixedly provided with a lifting air cylinder; the telescopic end of the lifting air cylinder is fixedly connected to the lower surface of the containing plate, and a four-claw clamping air cylinder is fixedly installed in the middle of the upper surface of the movable base plate. And the effects that the cross shafts of different sizes can be rapidly clamped and positioned, and the installation efficiency of the universal joint is effectively improved are achieved.

The utility model discloses a surveying and mapping instrument stand for surveying and mapping, which comprises a supporting seat, sliding blocks are symmetrically and slidably connected in the supporting seat, one side of each sliding block is fixedly connected with a connecting block, the top of each connecting block is fixedly connected with a limiting plate, one side of each limiting plate is provided with an anti-skid soft cushion, and the top of the supporting seat is symmetrically and fixedly connected with fixing rods. A fixing frame is fixedly connected to the top of the fixing rod, and a sliding plate is slidably connected into the fixing frame. The surveying and mapping instrument clamping device has the advantages that by arranging the rotary knob, the worm, the worm gear, the rotating shaft, the cam, the sliding block, the connecting block and the limiting plate, the surveying and mapping instrument can be rapidly clamped and fixed, dismounting and mounting are convenient, and the working efficiency is high; by arranging first organ cloth, a connecting ring, a clamping block, a mounting block, a limiting groove, a sliding plate and second organ cloth, the function of protecting the surveying and mapping instrument in rainy days is achieved, the instrument is prevented from being wetted and damaged, and use is convenient.

The present invention discloses an electromagnetic detection device for detecting corrosion damage of steel structures and a method for using the same, comprising a detection platform, a support leg, a screw and a threaded cavity, wherein the support leg is fixed at the four corners of the bottom end of the detection platform, the bottom end of the support leg is provided with the threaded cavity, the screw is installed in the threaded cavity, a pad is provided at the bottom end of the screw, and both sides of the upper end of the detection platform are provided with a slide groove, and a slider is installed in the slide groove. The beneficial effect is that: the present invention provides a through cavity, a guide rail, a protrusion and a collection box, and during the movement of the slider, since the specifications of the through cavity are smaller than those of the slide groove, the iron filings spilled in the slide groove can fall into the collection box through the through cavity, and the iron filings are automatically cleaned, and the collection box is removed by the guide rail and the protrusion to clean the collected iron filings, without the need for manual cleaning, thereby reducing the work intensity of the staff and improving the functionality of the device.

The utility model discloses a kind of emulsifiable concentrate pesticide packaging bag printing with turnover device, comprising: processing platform, the control panel is fixedly installed on the processing platform top surface, the control panel side is provided with printing equipment, turnover unit, the turnover unit is placed in printing equipment side, the turnover unit includes gear and tooth frame, gear can be driven to rotate for the tooth frame moving, to the emulsifiable concentrate pesticide packaging bag printing of the clamping unit clamping is turned over, clamping unit, the clamping unit is placed in turnover unit inboard, the clamping unit includes slide bar, inclined frame and clamping frame, for the slide bar of opposite motion can extrude inclined frame, make two clamping frames opposite motion, emulsifiable concentrate pesticide packaging bag is clamped quickly, under the control of control panel limit, telescopic rod and printing equipment work can be controlled, under the control of printing equipment limit, emulsifiable concentrate pesticide packaging bag printing processing can be controlled.

This utility model relates to the field of textile fabric testing technology and discloses a stain resistance testing device for fully matte flannel. The device includes a body with an adaptive mechanism on the top of its outer wall. Fixing blocks are fixedly connected to both sides of the outer wall, and pushing mechanisms are located on the opposite sides of the two fixing blocks. The adaptive mechanism includes a base column, the bottom of which is fixedly connected to the top of the outer wall of the body. An annular groove is formed on the outer wall of the base column, and a first fixing ring is slidably connected to the inner wall of the groove. A sliding rod is slidably connected to the outer wall of the first fixing ring. In this utility model, the adaptive mechanism enables rapid clamping and fixing of the fabric. The operator holds the comfortable handles with both hands and pulls them horizontally to the sides, causing the two fixing rings to separate and form a gap. The test fabric is then placed in, and releasing the handles causes a spring to automatically return the sliding rod to its original position. No tools are needed to adjust for fabrics of different thicknesses. The guiding device and the limiting mechanism work together to ensure a smooth and orderly clamping process, improving testing efficiency.

The utility model belongs to the technical field of high-speed motorized spindle production and machining, and particularly relates to a pressing and locking device for drilling in high-speed motorized spindle production and machining, which comprises a mounting plate, a toggle clamp pressing mechanism and a pressing supplementing mechanism, and the pressing supplementing mechanism is mounted on the toggle clamp pressing mechanism and vertically corresponds to a groove seat. The groove seat is fixed on the mounting plate, and the toggle clamp pressing mechanism is mounted on the mounting plate. Through linkage matching of the toggle clamp downward pressing mechanism and the downward pressing supplementing mechanism, rapid clamping and fixing of the electric spindle can be achieved, the toggle clamp downward pressing mechanism provides main clamping force, and the requirement of industrial production for clamping efficiency is met; and the downward pressing supplementing mechanism adjusts and enhances the clamping force through a pressure compensation mechanism when the fixed groove pressing plate is abraded, so that the positioning stability in long-term use is ensured, and the positioning precision in the drilling process is also ensured. According to the design, the adaptability of the device to motorized spindle machining is remarkably improved, and meanwhile operation convenience and process reliability are both considered.

The invention belongs to the technical field of C-shaped accessory machining, and particularly relates to a clamping and positioning device for power supply machining, which comprises a workbench, side plates are fixedly mounted on the two sides of the workbench, and a sliding groove is formed in the surface of the workbench; and the clamping mechanism is arranged at the position of the sliding groove and used for fixing the C-shaped accessory, and the clamping mechanism comprises a two-way screw rod, a fixing wheel, two special-shaped nuts, a clamping wheel and a rotating clutch assembly. According to the machining device, the two clamping wheels approach the fixed wheel, the C-shaped accessory can be conveniently and rapidly clamped and fixed, the positioning plate extrudes one end of the C-shaped accessory, the C-shaped accessory rotates around the circle center of the arc outline of the C-shaped accessory till the two ends of the C-shaped accessory are tightly pressed against the surface of the positioning plate, the C-shaped accessory is prevented from moving in the arc direction in the machining process, and the machining efficiency is improved. And clamping and positioning of the C-shaped accessory are carried out cooperatively and are in close fit, so that the coordination among the mechanisms is improved, and the machining efficiency is improved.

The invention relates to the technical field of aluminum pipe pressure detection, and discloses a pressure detection device for an aluminum-clad pipe, which comprises a substrate, the top of the substrate is fixedly connected with a detection frame, and the upper and lower sides of the detection frame are both provided with pressure detection assemblies. Clamping frames are movably connected to the positions, located on the two sides of the detection frame, of the top of the base plate through adjusting mechanisms, so that the device can rapidly drive the multiple clamping plates to move at the same time through the clamping mechanisms, aluminum pipes with different inner diameters can be rapidly clamped and fixed, it can be guaranteed that the aluminum pipes cannot relatively slide in the pressure detection process, and the detection efficiency is improved. The horizontal position of the clamping frame can be quickly adjusted through the adjusting mechanism, so that the device can be used for clamping and fixing aluminum pipes with different lengths, and can be used for carrying out pressure detection on different positions of the aluminum pipes; and the detection quality and the application range of the device are greatly improved.

This utility model discloses a low-noise automated screw-driving device, comprising: a device base, on which a clamping assembly is fixed to secure the workpiece to be screwed; a top plate, which is mounted above the device base via a support plate, and a lifting motor is mounted above the top plate; and a screw-driving device, which is positioned below the top plate, with the output shaft of the lifting motor passing through the top plate and connected to the screw-driving device, and the screw-driving end of the screw-driving device corresponding to the fixed end of the workpiece. This utility model, through the clamping assembly, achieves rapid clamping and fixing of the workpiece to facilitate screw driving. Furthermore, under the action of the screw-driving device, the position of the screwdriver bit can be adjusted according to different workpieces, allowing for rapid screw driving.

The utility model discloses a seamless steel pipe stable back shore device which comprises a base and a fixing frame fixedly arranged on the top wall of the base and further comprises a stable adjusting assembly and a clamping and positioning assembly. The utility model belongs to the technical field of shoring equipment, and particularly relates to seamless steel tube stable shoring equipment which can be stably and integrally erected between a roof and a house bottom, improves the stability in use and flexibly clamps a seamless steel tube.

The utility model discloses a building structure coating device which comprises an excess material recycling mechanism and an electric telescopic rod installed on one side of the excess material recycling mechanism. A fastening mechanism is arranged on one side of the top of the excess material recycling mechanism, and one side of the fastening mechanism is fixedly connected to one side of the storage barrel. The excess material recycling mechanism comprises a cart, one side of the top of the cart is fixedly connected with an electric telescopic rod, the output end of the electric telescopic rod is rotationally connected with a lead screw, the outer side of the lead screw is in threaded connection with a positioning sleeve, and the outer side of the positioning sleeve is sleeved with a sleeve; wherein the outer side of the sleeve is connected with a container in a sliding mode, one side of the container is fixedly connected with the cart, the interior of the container is connected with a piston in an attached mode, and one side of the piston is rotationally connected with the lead screw. And by arranging the fastening mechanism, the spraying equipment can be quickly clamped and fixed, and the spraying equipment can be conveniently placed.

The utility model relates to the technical field of machining platforms, and discloses a machining platform for a five-axis numerical control machine tool, which comprises a mounting bottom plate, a fixing ring is mounted at the bottom of the mounting bottom plate, a disc is arranged in the fixing ring, a first motor is mounted at the top of the disc, and a fixing seat is mounted at the bottom of the disc; a bidirectional bolt is arranged at the top of the mounting bottom plate, the bidirectional bolt is connected with the output end of a second motor, the second motor is mounted in the mounting bottom plate, two moving blocks are arranged on the bidirectional bolt, and telescopic air cylinders are arranged at the tops of the moving blocks. Through the design of a fixing ring, a bidirectional lead screw and a telescopic air cylinder, two moving blocks and parts above the two moving blocks can be driven to be subjected to position adjustment through rotation of a bidirectional bolt, and therefore clamping and fixing of a workpiece are rapidly completed. And meanwhile, the first motor drives the fixing ring to rotate around the disc, the fixed workpiece can be slowly rotated and adjusted, and the multi-angle machining requirement is met.

The utility model discloses a part clamping device for ship machining, which relates to the technical field of clamping devices and comprises a workbench, a first motor is arranged on the side face of the workbench, a fixing support is arranged above the workbench, a second threaded rod is arranged in the fixing support, and a second threaded rod is arranged in the second threaded rod. A second motor is arranged on the upper surface of the fixing support, a transverse rod is arranged on the inner side of the fixing support, a transmission wheel is arranged on the outer side of a second threaded rod, and a belt is arranged on the outer side of the transmission wheel. According to the part clamping device for ship machining, the first motor and the belt are arranged to drive the fixing support to move mutually, meanwhile, the air cylinder is arranged to control the pressing plate to move up and down to clamp a part, the protection pad is arranged to protect the surface of the part, and the part is prevented from being damaged by clamping; and a second motor and a belt are arranged to drive a second threaded rod to rotate, so that a worker can conveniently adjust the height of the clamped part.

The utility model discloses a rotary clamping mechanism which comprises a supporting table, the right side face of the supporting table is fixedly connected with a fixing plate, the left side face of the fixing plate is fixedly provided with an electric cylinder, the telescopic end of the electric cylinder is fixedly connected with a right vertical plate, and the upper surface of the supporting table is fixedly connected with a left vertical plate. And bearing rings are fixedly embedded in the left side face of the left vertical plate and the side face, close to each other, of the right vertical plate correspondingly, and inner rings of the two bearing rings are fixedly connected with a driving shaft and a rotating shaft correspondingly. According to the device, a left vertical plate and a right vertical plate are arranged and are matched with two fixed clamping seats and an electric cylinder, a workpiece can be rapidly clamped and fixed, machining treatment on the workpiece is facilitated, and through operation of a driving motor in a protective cover and meshing transmission of a second gear and a first gear, the machining efficiency is improved. When one side face of the workpiece is clamped, the driving shaft and the clamped workpiece can be driven to turn over, the other side face of the workpiece can be conveniently machined, and then the labor intensity of operators is reduced.

According to the technical scheme, the impact resistance test equipment comprises an equipment table and an impact head, supporting frames are installed on the two sides of the top of the equipment table respectively, a clamping plate is installed on the portion, close to the front surface, of the top of the equipment table through a dovetail groove, infrared distance measuring sensors A are installed on the portions, close to the bottoms, of the supporting frames on the two sides respectively, and the infrared distance measuring sensors A are connected with the clamping plate. A measuring frame is installed in the middle of the rear surface of the equipment table, a measuring motor is installed at the top of the measuring frame, a measuring shaft is installed on an output shaft of the measuring motor, and the outer surface of the measuring shaft is sleeved with a measuring plate through threads. The utility model discloses impact resistance test equipment for a nickel alloy pipe, and solves the problems that the existing impact resistance test equipment for the nickel alloy pipe needs to manually measure the specification of the nickel alloy pipe so as to adjust the impact force of an impact mechanism, deviation is easy to occur in manual measurement, and the selection accuracy of the impact force is influenced. And the specification measurement accuracy of the nickel alloy pipe is improved, so that the impact resistance test accuracy of the nickel alloy pipe is improved.

This utility model relates to the field of chamfering machine technology and discloses a chamfering machine for processing irregular metal components. It includes a machine body with bases connected to both sides of its bottom. A limiting block is provided at the center of the top of the machine body. A guide opening is provided on the top of the machine body to the right of the limiting block. A guide platform is provided on the top of the machine body to the left of the limiting block. A fixing block is provided on the top of the guide platform. An isolation box is connected to the upper left end of the machine body. A support platform is provided inside the isolation box. A first electric push rod is installed on the top of the support platform. The right end of the first electric push rod passes through the right side wall of the isolation box and connects to the fixing block. This utility model, by setting up the limiting block, guide platform, fixing block, isolation box, support platform, and first electric push rod, utilizes their mutual cooperation to quickly clamp and fix irregular metal components, thereby improving work efficiency.

This utility model belongs to the field of turbine blade processing technology, specifically disclosing a rapid positioning fixture for wire cutting of single-crystal turbine blades. It includes a positioning base and a clamping assembly. The top surface of the positioning base has a first positioning boss. The clamping assembly is detachably mounted on the positioning base and located near the first positioning boss. The first positioning boss has a blade positioning surface conforming to the blade shape. The clamping assembly includes a clamping hammer, which is positioned above the blade positioning surface and can be driven to move closer to or away from the blade positioning surface. This utility model achieves rapid and accurate positioning of the blade by setting multiple different positioning surfaces on the positioning base. Combined with the clamping assembly, the blade can be quickly clamped and fixed, offering advantages such as rapid and accurate positioning, protection of blade surface quality, and improved production efficiency.

The application discloses a pipe stranding machine for cross-linked polyethylene cloth electric wire processing and relates to the technical field of pipe stranding machines.The pipe stranding machine comprises a bottom plate, a vertical plate fixed to the upper end face of the bottom plate, a limiting seat fixed to the bottom plate, a motor fixed to the limiting seat, and a stranding cage body connected with the limiting seat.The positioning mechanism drives the limiting seat to move through a first air cylinder, the distance between the two limiting seats can be quickly adjusted, the pay-off reel can be quickly clamped and fixed, manual accurate calibration is not needed, the operation process is greatly simplified, the installation time is shortened, and simultaneously, the limiting seat moves in the process, synchronously driving the sliding rod, the cylinder and the clamping block to move, the clamping block is matched with the clamping toothed plate in the stranding cage body through the elastic force of the first spring, the stranding cage body is automatically locked, the safety hidden danger caused by the misstart of the stranding cage body during the installation of the pay-off reel is effectively avoided, and the safety of the equipment use is remarkably improved.

This invention relates to the field of medical auxiliary device technology and discloses a pull-out painless gastrointestinal endoscopy elbow arm fixation frame, comprising: an elbow arm fixation assembly including a support frame, two hinged ears fixedly connected to the top of the support frame, a knob with a screw inserted between the two hinged ears, a circular lug with a double-toothed structure rotatably connected to the outer surface of the screw of the knob, and a damping rotating shaft fixedly connected to the outer circumferential surface of the circular lug. This invention, through a multi-dimensional adjustable structural design, can flexibly adapt to the needs of patients with different body types, arm lengths, and lateral decubitus positions, precisely adjusting the fixation position, tilt angle, and circumferential angle to ensure that the elbow arm is placed in accordance with the physiological contour; it can prevent displacement caused by unconscious agitation of the patient under sedation, while ensuring smooth peripheral venous access, providing reliable protection for anesthetic drug infusion and vital sign monitoring, and significantly improving the safety and patient tolerance of painless gastrointestinal endoscopy.

The utility model relates to the technical field of energy storage devices, and provides a hydrogen energy power generation and energy storage structure which comprises a cabinet body, the front face of the cabinet body is fixedly connected with a door body through hinges, a dustproof exhaust channel is formed in the middle of the top end of the cabinet body, and a dustproof air inlet channel is formed in the middle of the bottom end of the cabinet body. The inner wall of the dustproof air inlet channel is fixedly connected with a heat dissipation fan, porous placing plates are movably connected into the cabinet body at equal intervals, the top ends of the porous placing plates are movably connected with energy storage battery bodies, sliding assemblies are arranged on one sides of the porous placing plates, and clamping assemblies are arranged on one sides of the top ends of the porous placing plates. Through the arranged sliding assembly, the porous placing plate can slide to the outside of the cabinet body through sliding of the sliding plate out of the cabinet body, so that the energy storage battery at the top end of the porous placing plate can be disassembled, assembled, maintained or replaced conveniently, inconvenience in operation caused by limited space is avoided, and the practicability is improved.

The utility model relates to the technical field of batten compression, specifically is a kind of pre-compression device for batten assembly, including base, the surface of base is fixedly installed with clamping seat, the surface of clamping seat is placed with mounting block, by setting clamping screw rod, clamping plate, moving screw rod, lifting screw rod, limit plate, the synergic effect of utilizing these structures, clamping screw rod drives clamping plate to move along clamping slide bar stably, and mounting block is clamped and fixed quickly, provide stable workpiece basis for compression, moving screw rod rotates under the action of moving motor, cooperate with the synchronous movement of moving slide rod guide screw rod frame and slide rod frame, drive limit plate accurate adjustment to the compression station directly above mounting block, lifting screw rod operates under the drive of lifting motor, make lifting screw block drive limit plate along lifting slide bar perpendicular drop, reach the positioning accuracy of batten pre-compression, pressure is even, the effect of operation efficient, improve assembly consistency and production efficiency.

The present disclosure relates to the technical field of nut processing, and one embodiment of the present disclosure provides a nut high-speed punch forming machine, which comprises a processing table, the upper end face of the processing table is provided with a punch head, a positioning and clamping assembly is arranged on the processing table, and a driving clamping assembly is arranged on the lower end face of the processing table; the positioning and clamping assembly comprises a positioning groove, a sliding frame is inserted into the inner side wall of the positioning groove, the tail end of the sliding frame is provided with a clamping plate, the upper end face of the punch head is provided with a punch oil cylinder, the telescopic end of the punch oil cylinder is provided with a punch head, and the punch head corresponds to the position of the positioning groove. Through the above technical scheme, the technical problem that the traditional nut processing technology in the prior art exposes many limitations when facing the large-scale and diversified market demand nowadays, the early nut punch equipment has slow punching speed, the punching frequency per minute is few, and the production efficiency is extremely low, and it is difficult to meet the fast-paced production requirements at present is solved.

The utility model relates to the field of steel production, in particular to a nylon roller clamping device which comprises a supporting column serving as a fixing base body of the device. One end of the connecting arm is axially and rotatably connected to the supporting column, and the other end of the connecting arm is symmetrically provided with an arc-shaped clamping jaw A and an arc-shaped clamping jaw B which can cooperatively act through a hinge assembly; and the bidirectional adjusting mechanism comprises an adjusting rod provided with a positive and negative thread section, the positive thread section of the adjusting rod is in thread pair fit with the free end of the arc-shaped clamping jaw A, and the negative thread section of the adjusting rod is in thread pair fit with the free end of the arc-shaped clamping jaw B. According to the nylon roller clamping device, the adjusting rod with the right-hand thread section and the left-hand thread section is arranged to adjust the distance between the adjusting rod and the arc-shaped clamping jaw A and the arc-shaped clamping jaw B to be matched, a nylon roller can be clamped conveniently, and meanwhile the connecting arm is arranged to rotate in the axial direction and connected with the supporting column; and after the nylon roller clamped by the arc-shaped clamping jaw A and the arc-shaped clamping jaw B is conveniently adjusted, the placement position of the nylon roller is adjusted, so that the nylon roller meets the use requirement.

The utility model discloses a window frame profile trepanning device which comprises a drilling frame, a bearing platform and a positioning mechanism, the bearing platform is installed on the surface of the drilling frame in a sliding mode, a drilling machine is arranged on the top of the bearing platform, one end of the bearing platform is connected with a fixed clamping strip, and a vertical rod is arranged at the bottom of the bearing platform. The positioning mechanism comprises a movable clamping strip, a pedal and a conveying assembly, the movable clamping strip is connected with the pedal through a connecting rod mechanism, the pedal is treaded to drive the movable clamping strip to slide to be close to the fixed clamping strip so as to clamp the window frame profile, the conveying assembly is fixed to the pedal and comprises a motor, an eccentric roller sleeve and a creeping block, and the outer surface of the creeping block is provided with a rough conveying face. And under the eccentric driving of the motor, friction is formed with a window frame profile, and creeping conveying of the profile is realized by matching with a clamping structure. The device is simple in structure, convenient to operate and capable of achieving rapid clamping and continuous trepanning of the window frame profile, and the trepanning efficiency and the machining precision are improved.

The utility model relates to the technical field of numerical control lathe machining, and particularly discloses a multi-station fixing device for numerical control lathe machining, which comprises a base, a plurality of supporting legs are fixedly connected to the top end of the base at equal intervals, a mounting plate is fixedly connected to the top ends of the supporting legs jointly, and a plurality of fixing mechanisms are fixedly connected in the mounting plate at equal intervals in a penetrating manner. Two movable wheels are tightly attached to one side of the bottom end of each fixing mechanism, connecting rods are jointly and movably connected to the two sides of each movable wheel in a penetrating mode, base plates are jointly and fixedly connected to the bottom ends of every two adjacent connecting rods, a movable plate is jointly and fixedly connected to the bottom ends of the base plates, and an electric telescopic rod is fixedly connected to the middle of the bottom end of each movable plate. The movable wheels are used for pushing the fixing mechanisms at the same time, so that the fixing mechanisms clamp plate workpieces placed in the fixing mechanisms at the same time, the plate workpieces at multiple stations are fixed at the same time, the fixing efficiency of the plate workpieces is improved, and efficient machining of the plate workpieces by a numerical control lathe is facilitated.

The utility model discloses a yellow rice wine oak barrel device convenient for sampling and dumping, which belongs to the field of oak barrel overturning and dumping, and comprises a dumping component, the top end of the dumping component is fixedly connected with two symmetrically arranged brackets, and the technical scheme is characterized in that a motor in the dumping component drives a transmission structure of a worm, a worm gear, a gear and a rack, so that the dumping component can conveniently sample and dump the yellow rice wine. The height adjustment and dumping action of the oak barrel body can be accurately controlled, labor-consuming manual carrying or adjustment is not needed, and the labor intensity is greatly reduced; a motor of the clamping assembly drives a two-way lead screw, clamping and loosening of the oak barrel body can be rapidly achieved, loading and unloading of the oak barrel body are facilitated, the operation efficiency is remarkably improved, staggered lifting of two racks is controlled, the oak barrel body is made to shake, yellow wine precipitated in the barrel is effectively mixed, and it is ensured that a taken-out sample can truly reflect the quality of the whole barrel of yellow wine; and in the yellow rice wine pouring process, the oak barrel body can flexibly rotate to adjust the pouring angle.

The utility model discloses an eye mold fixing mechanism for an annealing tinning machine, which comprises a bottom mold plate, a plurality of first clamping grooves arranged at intervals are formed in the top surface of the bottom mold plate, and the two ends of each first clamping groove penetrate through the two sides of the bottom mold plate; the top template is arranged above the bottom template, a plurality of second clamping grooves corresponding to the first clamping grooves are formed in the bottom surface of the top template, and the two ends of the second clamping grooves penetrate through the two sides of the top template; the anti-slip strip is arranged on the inner wall of the first clamping groove and / or the second clamping groove; and a locking member. Due to the fact that the first clamping groove and the second clamping groove clamp the side wall of the eye mold, and the two ends of the eye mold exceed the first clamping groove and the second clamping groove, the two ends of the eye mold do not have dirt hiding structures, dust accumulation is prevented, and the guiding stability of the metal wire is guaranteed. And the anti-slip strips are arranged, so that clamping of the eye mold can be enhanced, and the eye mold is prevented from slipping out of the first clamping groove and the second clamping groove.

This invention provides a positioning fixture for welding square tubes, belonging to the field of welding fixture technology. It includes a support platform and a positioning plate. The positioning plate has a movable opening on its side near the center of the support platform, within which a movable plate is movably connected. An inclined block and a floating block are arranged on the inner side of the positioning plate. The inclined block is fixed to the movable plate, and the top of the floating block has an inclined portion adapted to the movable plate. Electromagnets are arranged below the positioning plate. This invention, by setting a movable plate on the positioning plate and arranging a floating block and an inclined block on its inner side, with the floating block driven by the magnetic field generated by the electromagnet, pushes the inclined block, causing the movable plate to move closer to the center of the support platform. This allows the rectangular frame formed by the square tubes to be quickly clamped and fixed. By turning the electromagnets on or off, the workpiece can be clamped or released, enabling the quick fixing of workpieces that are flipped during welding.