213 results about "Needle type" patented technology

The invention relates to the field of filtering equipment, in particular to a multi-channel needle type filtering device which comprises a workbench, an electric lifting rod is arranged at the upper end of the workbench, a needle cylinder frame is arranged at the top end of the electric lifting rod, a plurality of positioning cavity cylinders are arranged on the needle cylinder frame at equal intervals in a penetrating mode, and needle cylinder filters are erected in the positioning cavity cylinders. A plurality of mounting grooves are formed in the upper end of the workbench at equal intervals, container bottles are arranged in the mounting grooves and located under the corresponding needle cylinder filters, each needle cylinder filter comprises a needle cylinder body, a sealing seat and a needle head, a piston is slidably arranged in each needle cylinder body, a pressing column is fixedly arranged at the top end of each piston, and a connecting seat is arranged at the bottom of each needle cylinder body; and the sealing seat is hermetically sleeved on the outer side of the connecting seat. According to the ion filtering device, the corresponding filtering membranes can be quickly replaced according to different filtered ion particles, the filtering process of different ions can be synchronously realized on the same equipment, the operation is simple, and the filtering effect is good.

The utility model provides a needle type on-line filtering device which comprises a filter element placing block, a first notch and a second notch which are horizontally and transversely arranged at the upper end of the filter element placing block; the sample loading frame is arranged on the horizontal side surface of the filter element placing block and can be used for placing at least one row of test tubes which are horizontally and transversely arranged with openings facing upwards; the vertical mechanical arm is provided with a lifting seat which is located on the upper portion and can ascend and descend and a guide seat which is located on the lower portion and fixed, the lifting seat is used for fixing the upper end of a sample loading needle, and the guide seat can allow the lower end of the sample loading needle to penetrate through; the filter element is stacked in the first notch of the filter element placing block and can be connected with the sample loading needle in a tight fit manner; and the horizontal longitudinal mechanical arm can drive the filter element placing block and the sample loading frame to horizontally and longitudinally move. Therefore, the functions that the sampling needle pricks the filter element at the first notch of the filter element placing block, filters and samples in the test tube of the sampling frame, and rows the filter element at the second notch of the filter element placing block can be realized.

The invention discloses a lockable array needle type mechanical finger used for grabbing closely arranged objects. Comprising a base and further comprises mechanical fingers movably arranged on the base. The mechanical finger comprises a shell, a flexible cavity, a movable needle and blocking particles, the movable needle is connected to the shell in a sliding mode, the shell is provided with a gas connector, the flexible cavity is arranged in the shell, the interior of the shell is divided into a blocking cavity and a gas cavity which are not communicated with each other through the flexible cavity, the gas cavity is communicated with the gas connector, and the blocking particles are arranged in the blocking cavity. The end of the movable needle is located in the blocking cavity, and the blocking particles are arranged in the blocking cavity. According to the lockable array needle type mechanical finger for grabbing the closely arranged objects, under the condition that the objects are closely arranged, the mechanical finger can effectively solve the problem that grabbing is difficult due to the fact that the shape of a traditional mechanical finger is fixed, smooth sliding of the movable needles can be guaranteed, and the mechanical finger can be used for grabbing the closely arranged objects. And unstable grabbing caused by an overlarge gap between the movable needles is avoided.

The invention provides a method for preparing nanofiber doped with a large-particle antibacterial agent by a needleless electrostatic spinning device. The method comprises the following steps: adding a high-molecular polymer and a large-particle antibacterial substance into an organic solvent to prepare a spinning solution; electrospinning nanofibers doped with a large-particle antibacterial agent on the surface of the fabric through a needleless electrostatic spinning device; the needleless electrostatic spinning device comprises an electrode wire, a liquid brushing tank, a direct-current high-voltage power supply, a winding roller, a metal plate, a liquid storage bottle and a movable spraying brush. The electrode wire is used for replacing a needle type electrode, production efficiency is improved, and needle blockage is avoided; the liquid storage bottle reduces volatilization of the spinning liquid, the spinning liquid is continuously stirred and pumped to the liquid brushing tank to be brushed on the electrode wires, the antibacterial agent is prevented from being deposited, and the antibacterial agent is evenly distributed on the nanofibers; an air injection brush head is installed to prevent large particles from depositing on the electrode wires; according to the method, the selection limitation on the high-molecular polymer and the antibacterial agent is small, and the prepared antibacterial fabric has lasting antibacterial property.

The invention provides a unilateral curved needle type three-dimensional composite material preform sewing head and a sewing method thereof, and belongs to the technical field of unilateral sewing, the unilateral curved needle type three-dimensional composite material preform sewing head comprises a rack, a thread leading mechanism, a thread hooking mechanism, a synchronous transmission mechanism, a thread guiding mechanism, a presser foot plate and a driving mechanism, the servo motor and the speed reducer are used for driving the thread leading needle and the thread hooking needle to rotate back and forth on a fixed plane respectively; the synchronous transmission mechanism ensures that cranks in the thread leading mechanism and the thread hooking mechanism rotate synchronously, and synchronous control can be achieved through one servo motor. The thread guide mechanism guides the trend of the suture thread, the tension of the suture thread is ensured, and the stitch forming efficiency is improved. It can be seen that the device is compact in structure and wide in application range, the prefabricated body can be sewn according to the penetrating thickness, non-penetrating sewing can be achieved, laying and splicing are completed, and the production efficiency and the product consistency are improved.

The utility model relates to the technical field of medical instruments, in particular to novel disposable active bipolar electrocoagulation grasping forceps which comprise a main body mechanism and a needle type bipolar electrocoagulation wire, the main body mechanism comprises a main body fixed handle and a grip, an adjusting mechanism used for controlling and adjusting the grasping forceps is arranged on the main body mechanism, and the needle type bipolar electrocoagulation wire is arranged on the main body mechanism. A grabbing mechanism capable of being assembled easily and conveniently is arranged on one side of the main body mechanism and comprises an inner pull rod, a hollow thin tooth grabbing clamp a and a hollow thin tooth grabbing clamp b. Through the arrangement of the grabbing mechanism, the two-way thread locking technology is adopted between parts of the device, the assembling cost is greatly reduced, the multiple parts of the grabbing mechanism are assembled and connected through the inner pull rod pin and the tong head pin, and therefore the welding technology between the parts is reduced, and the welding efficiency is improved. The damage of a welding process to plastic parts of the instrument is avoided, the assembly difficulty is reduced, and the cost loss of the parts is reduced.

The invention discloses an online automatic cleaning continuous production electrostatic spinning device which comprises a supporting frame, and a supporting base is installed at the bottom of the supporting frame; the lifting frame is vertically connected to the supporting frame in a sliding mode, and a lifting assembly is installed on the supporting seat and located at the top end of the lifting assembly; the spinning mechanism comprises spinning turntables rotationally connected to the lifting frame through gear sets, the two spinning turntables are arranged oppositely, and five sets of spinning steel wires are arranged between the two spinning turntables; the transmission mechanism comprises a first transmission assembly and a second transmission assembly, the first transmission assembly is in transmission fit with the gear set, and the second transmission assembly is in transmission fit with the spinning steel wire; wherein a spinning tank, two groups of cleaning tanks and two groups of drying tanks are mounted on the lifting frame. Non-needle type spinning is adopted, blocking is avoided, meanwhile, needle cleaning is not needed, the spinning efficiency is high, solvent type solutions can be spun, and the application range is wide.

The utility model belongs to the technical field of knitting equipment, and particularly relates to a stable high-density needle type manufacturing knitting needle. Comprising a needle body and a loop transfer reed, and the needle body is provided with a needle body, a needle rod and a needle tail; a needle hook is arranged at one end of the needle rod, and a needle latch capable of being opened and closed is arranged on the needle rod on the rear side of the needle hook; the needle body is provided with a reed mounting groove for mounting a loop transfer reed; the requirement of a single knitting needle for the transverse space of a needle bed is reduced, a thinner needle type can be designed, the method can be used for high-density needle type manufacturing, and the loop transfer stability is greatly improved; according to the invention, the insertion space is not easy to compress, which is beneficial for improving the transfer stability of the compactness coil; the gap between the needle body and the needle groove is further reduced, and high-density needle type manufacturing is facilitated.

The utility model relates to the field of operation and maintenance of wind generating sets, in particular to a device for detecting the conduction of a lightning protection wire of a blade of a wind generating set, which comprises a metal fixing ring, a hoisting cable fixing lifting lug and a metal woven net bag, a cable testing binding post is arranged on the hoisting cable fixing lifting lug, and a metal belt is arranged in the metal woven net bag. The metal belt is provided with a needle type contactor, and the needle type contactor is used for scratching or penetrating an oxide layer of the blade lightning arrester. The device for detecting the conduction of the lightning protection wire of the blade of the wind turbine generator can enable the conduction test of the blade to be more convenient, safer, time-saving and labor-saving, greatly shortens the construction time, improves the working efficiency of personnel, and reduces the safety of the personnel at the same time.

The invention belongs to the technical field of knitting equipment, and particularly relates to a knitting needle capable of being used for high-density needle type manufacturing. Comprising a needle body and a loop transfer reed, and the needle body is provided with a needle body, a needle rod and a needle tail; a needle hook is arranged at one end of the needle rod, and a needle latch capable of being opened and closed is arranged on the needle rod on the rear side of the needle hook; the needle body is provided with a reed mounting groove for mounting a loop transfer reed; the requirement of a single knitting needle for the transverse space of a needle bed is reduced, a thinner needle type can be designed, the method can be used for high-density needle type manufacturing, and the loop transfer stability is greatly improved; the knitting needle can work more stably, and the cloth cover of the fabric is smoother; the gap between the needle body and the needle groove is further reduced, and high-density needle type manufacturing is facilitated.

The invention relates to the technical field of sock production equipment, in particular to shaping sock wearing plate equipment which comprises a double-layer circulating conveying line, the double-layer circulating conveying line comprises a double-layer conveying rack and lifting tables arranged at the two ends of the double-layer conveying rack, and an upper-layer rack and a lower-layer rack are arranged in parallel up and down; the upper-layer machine frame is fixedly connected to the upper face of the lower-layer machine frame, the upper-layer machine frame is provided with a first conveying line, the lower-layer machine frame is provided with a second conveying line, the upper-layer machine frame is provided with a sock placing station, and the upper-layer machine frame is further provided with a sock opening expanding mechanism, a sock wearing plate mechanism and a sock collecting plate mechanism. The welt opening mechanism comprises a first needle type clamping jaw and a second needle type clamping jaw which are oppositely arranged. The first needle type clamping jaw and the second needle type clamping jaw which are oppositely arranged up and down are matched to prop open a rib top of a sock, the sock top does not need to be pulled open with two hands for a long time, labor intensity is reduced, and production efficiency is relatively high.

The invention relates to a knitting needle type yarn cutting device which comprises a bush-hook, a fixed knife and a thread pressing reed, the bush-hook is arranged in one needle groove of a needle plate in a sliding mode, the fixed knife and the thread pressing reed are fixedly installed on the needle plate on the two sides of the bush-hook in the width direction respectively, and the fixed knife and the thread pressing reed abut against the two sides of the bush-hook in the width direction respectively. The fixed knife is located on the side, facing the center of the needle plate, of the bush-hook, a hook groove is formed in the bush-hook, a cutting opening is formed in the hook groove, a check block is installed on the fixed knife, and when the bush-hook is contained in the needle plate, the check block blocks the opening of the hook groove. The device has the effect of reducing the probability that the yarn is cut off when entering the hook groove by mistake.

The utility model discloses a roller pin type multi-bearing punching gun cavity structure which comprises a shell, one end of the shell is sleeved with a connecting sleeve in a threaded mode, an inner cavity of the shell is provided with a movable sleeve, an inner cavity of the movable sleeve is sleeved with a rotating rod in a threaded mode, the surface of the rotating rod is provided with a limiting ring, and the surface of the movable sleeve is provided with a bearing assembly. Rolling needles are symmetrically arranged on the surface of the movable sleeve in a rolling mode, and a push rod is arranged at one end of the movable sleeve. According to the roller pin type multi-bearing punching gun cavity structure, the friction force between the rotating rod and the shell during rotation is reduced through the deep groove bearing and the plane bearing, the friction between the push rod and the shell is greatly reduced through the three-face roller pin design, the temperature of the shell can be reduced, meanwhile, oil in an inner cavity of the shell is prevented from being heated, and the service life of the punching gun is prolonged. And the oil consumption in the cavity can be reduced by reducing the temperature rise.

The utility model discloses a needle type threader for orthopedic surgery, which comprises a threader component, a reset component and a positioning cut-off component, the threader component is arranged on the left side of the reset component, the positioning cut-off component is arranged on the right side of the reset component, the threader component comprises a threading needle and a handle, and the threading needle is arranged on the handle. The reset assembly comprises a positioning block, a first sliding groove, a first spring and a first sliding block, the positioning cut-off assembly comprises a fixing base, a second spring, a pressing plate, a positioning sliding rod, a positioning plate, a fixing block, a cutter, a positioning groove, a connecting block and a third spring, the threading needle is fixedly installed on the left side of the handle, and the positioning block is fixedly installed on the right side of the handle. The needle type threader for the orthopedic surgery is convenient to cut off and good in positioning effect, and solves the problems that a needle type threader in the prior art is not convenient to cut off a thread and is not convenient to position the thread during use, so that the needle type threader is complex to operate during the surgery.

The utility model relates to the technical field of flexible woven strip production, and discloses a novel adsorption grabbing structure which comprises an installation block, a stand column is fixedly installed at the bottom of the installation block, fixing plates are fixedly installed at the bottom of the stand column, the number of the fixing plates is two, and the fixing plates are located on the front side and the rear side of the bottom of the stand column. And a rotating shaft is rotationally mounted between the two groups of fixing plates. The needle type suction cup shell is driven to move downwards through operation of the air cylinder, at the moment, air enters the needle type suction cup shell through the air inlet, the pressing block moves downwards to grab the flexible weaving strip, and finally the needle head grabs the flexible weaving strip through operation of the servo motor. According to the device, the flexible weaving strip is adsorbed through the pin, and then the flexible weaving strip is grabbed through the needle head, so that the device can stably grab the flexible weaving strip, the weaving strip is prevented from falling off, and the production efficiency is improved.

The utility model discloses a split type carriage unit of a needle type certificate printer, belongs to the technical field of printing devices, and aims to solve the problems that in the prior art, the carriage unit of the certificate printer is basically an integral die casting, although the carriage unit is good in mechanical strength and heat dissipation performance, the part cost is high, the die structure is complex, the investment is large, and the cost is high. The die is complex in structure, large in investment and low in cost performance. Comprising a guide plate, a split combination mechanism is installed on one side of the guide plate and below the guide plate, the split combination mechanism comprises a guide assembly and a carriage unit lower half part, a carriage unit guide shaft is installed in the middle of the carriage unit lower half part in a penetrating and guiding mode, a printing head is installed on the inner side of the carriage unit lower half part, and an installation mechanism is installed at the joint of the printing head and the carriage unit lower half part. A carriage unit upper half part is arranged below the guide assembly, the lower section of the carriage unit upper half part is connected with a carriage unit lower half part, and a combination assembly is installed at the joint of the carriage unit upper half part and the carriage unit lower half part.

The utility model discloses a multi-channel filtering device for a needle type filter, which is characterized by comprising a porous upper supporting plate and a porous lower supporting plate positioned below the porous upper supporting plate, and a plurality of uniformly distributed stepped through holes for placing the filter are formed in the porous upper supporting plate; a plurality of sample introduction bottle positioning grooves corresponding to the stepped through holes are formed in the porous lower supporting plate; the two sides of the bottom of the porous upper supporting plate are symmetrically provided with at least one supporting column, and the two side edges of the porous lower supporting plate are each provided with a supporting column positioning groove which is used for being matched with the supporting column in an inserted mode and provided with a semi-opening. Guide sliding grooves allowing the porous upper supporting plate to horizontally move out of the porous lower supporting plate from the supporting column positioning grooves are formed in the porous lower supporting plate and located between the adjacent stepped through holes, one side of each guide sliding groove is communicated with the corresponding supporting column positioning groove with an inward opening, and the filter has the advantages that the number of filtered samples at a time is large, the filtering efficiency is high, and cross contamination of the filtered samples is avoided.

The utility model discloses a needle type pipettor suction head, which relates to the technical field of pipettors, and adopts the technical scheme that the needle type pipettor suction head comprises a sleeve and a needle head, one end, close to the needle head, of the sleeve is fixedly connected with a fixing piece, and the fixing piece is fixedly connected with the needle head. The liquid suction device has the effects of sucking all liquid as much as possible, avoiding sucking cell balls, membrane materials and the like, and avoiding damage caused by careless contact with objects in the use process.

1. Name of the design product: bait box (portable needle type). 2. Use of the design product: the design product is used for fishing bait box. 3. Design points of the design product: in shape. 4. Picture or photo best indicating the design points: perspective view.

The utility model relates to the technical field of flat knitting machines, and discloses a pre-selection needle three-system flat knitting machine bottom plate structure which comprises a bottom plate (1), a working part, a needle pushing part and a needle selecting part are arranged on the bottom plate (1), the working part comprises a protection mountain (2), the needle pushing part comprises a needle raising triangle (3), the needle raising triangle (3) is located below the protection mountain (2), the upper portion of the needle raising triangle (3) is provided with a needle raising protrusion (31), and the needle raising protrusion (31) is located below the protection mountain (2). The lower part of the guard (2) is provided with a guard groove (21), and the guard groove (21) is matched with the needle raising projection (31). The flat knitting machine bottom plate structure is provided with the three triangle systems, each system can be provided with a yarn guide to feed yarn, the knitting efficiency is improved, the height of the needle raising triangle can be adjusted, and the flat knitting machine bottom plate structure is suitable for various needle types. The knitting stability is improved when the needle butt is switched to the contour of the protection cam through the contour movement of the needle raising cam in the knitting process through the cooperation of the protection cam and the needle raising cam.

The utility model discloses a pin type hinge for door closing driven by a spring, which comprises a fixed component and a movable component, the fixed component comprises a hinge arm, and the hinge arm is hinged with the movable component through a hinge shaft; the door closing assembly comprises a spring, a push rod and a cam, the cam and the hinge arm are oppositely positioned, the cam sleeves the hinge shaft, one end of the push rod is attached to and connected with the cam through the elastic restoring force of the spring, the movable assembly comprises a mounting seat, the push rod is slidably connected to the mounting seat, and a first convex shell is formed on one side of the mounting seat; the door closing device further comprises a damper, the damper is arranged in the first convex shell, the fixing assembly is provided with a squeezing and pushing part used for driving the damper to longitudinally retract at the door closing tail section, the damper can make contact with the squeezing and pushing part, and the damper and the push rod are located on the same side of the installation base. The needle type hinge for door closing driven by the spring is wide in application range.

According to the technical scheme, the needle type pre-carding strip and the needle type pre-carding plate are characterized in that the needle type pre-carding strip and the needle type pre-carding plate comprise a connecting plate, a plurality of carding needles and a plurality of racks, the carding needles and the racks are installed on the connecting plate, and at least one part of the carding needles are used for conducting primary pre-carding on fibers and conducting secondary pre-carding in cooperation with the racks. Comprising a base assembly, the base assembly is provided with an installation groove used for installing connecting plates, clamping grooves used for embedding the side edges of the connecting plates are formed in the groove walls of the two sides of the installation groove, a detachable pressing plate is arranged at the position, corresponding to the position between the two connecting plates, of the installation groove, and the pressing plate downwards presses the connecting plates so as to be matched with the clamping grooves to fix the connecting plates in the installation groove. According to the pre-carding device, fine and uniform fiber carding can be ensured, meanwhile, fiber damage is reduced, formation of short fibers is reduced, abrasion of the racks is reduced, and the service life of pre-carding strips is prolonged.

The present invention provides a variety of needle-type safety staplers, including a pressing plate, a support frame, a base, a first rotating shaft, a rotating needle disk, a needle pressure piece, a second rotating shaft and a bending plate; one end of the pressing plate and one end of the support frame are rotatably connected to one end of the base through the first rotating shaft, the other end of the pressing plate is connected to the needle pressure piece, the other end of the support frame is connected to the rotating needle disk through the second rotating shaft, the rotating needle disk can rotate around the second rotating shaft, one or more needle grooves are arranged on the rotating needle disk, a needle type stapler is placed in a needle groove, and a bending plate is arranged on the other end of the base. The present invention has a simple and reasonable structure, and a rotating needle disk is arranged on the support frame, a plurality of needle grooves are arranged on the rotating needle disk, and different needle types of staplers are placed in different needle grooves, so that a plurality of staplers are integrated on a stapler, which is suitable for binding of different file thicknesses.

The guide needle type warp guide-in mechanism comprises a plurality of yarn inlet holes, a plurality of yarn guide guide needles are arranged below the yarn inlet holes, yarn outlet holes are formed in the lower ends of the yarn guide guide needles, and the yarn outlet holes are located between tooth openings of a front needle bed and a rear needle bed. The front needle bed knitting needle and the rear needle bed knitting needle adjacent to the front needle bed knitting needle extend into a crack between the front needle bed knitting needle and the rear needle bed knitting needle adjacent to the front needle bed knitting needle; the needle guiding type warp guiding-in mechanism is simple in structure, warp penetrating is convenient, occupied space is remarkably reduced, and it can be guaranteed that the warp is guided in place.

The utility model discloses a kind of needle type insulator glazing tool, relate to needle type insulator glazing tool field, specifically a kind of needle type insulator glazing tool, including box, the top of the box is fixedly connected with four support columns, the inside of the box is equipped with glaze dipping groove, the top of the support column is fixedly connected with box top, the bottom of the box top is fixedly connected with lifting mechanism, the lifting mechanism includes driving motor, the output of the driving motor is fixedly connected with threaded rod, one end of the threaded rod is fixedly connected with limit block, slidingly connected with slider on the threaded rod, the utility model solves the problem of the positioning accuracy of the existing needle type insulator glazing tool is insufficient and multiple workpieces synchronous processing.

1. Name of the product in this design: Invoice Needle (Double Needle Type). 2. Purpose of this design: For fixing invoices. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model. 5. The rear view has already been shown in the left and right views, so the rear view is omitted.

The present disclosure relates to a recovery system for recovering a liner wrap, characterized in that the recovery system comprises: a robot having a robotic arm, the robotic arm being movable in a three-dimensional space; the supporting plate is connected with the robotic arm; the grabbing mechanism is installed and supported on the supporting plate and used for grabbing the lining wrappage, and the grabbing mechanism comprises a telescopic device and a needle type grabbing hand connected with the telescopic end of the telescopic device. Through the robot and the grabbing mechanism connected with the robot through the supporting plate, the recovery system can mechanically grab and recover lining wrappage such as leatheroid, a base plate and a plastic tape on the surface of the cigarette packet, so that the labor cost can be reduced, and the production efficiency can be improved.

The utility model relates to the technical field of eyebrow tattooing machines, in particular to a single needle type transmission mechanism of an eyebrow tattooing machine, which comprises a casing, a base and a motor are mounted at the bottom of the casing, an input tooth, a connecting rod, a crankshaft, an output tooth, a connecting rod seat and an output shaft are arranged on the inner side of the casing, and the input tooth is in transmission connection with a transmission output shaft of the motor. The crankshaft is sleeved with the output gear and connected with the input gear in a meshed mode, the end of the crankshaft is connected with the upper end of the base through a bearing, the connecting rod is connected with the crankshaft and the connecting rod base, the bottom of the output gear is connected with the connecting rod base through a pin, and the upper end of the output shaft penetrates out of the machine shell. The crankshaft is matched with the connecting rod to transmit thrust to the connecting rod seat and the output shaft, so that the extension action of the output shaft is more stable, the shaking phenomenon can be prevented, the rotating speed is high, the force is large, and the use requirements of users can be met.

1. The name of the design product: needle type print head. 2. The use of the design product: used in needle type printer to perform printing operation. 3. The design points of the design product: in shape. 4. The picture or photo that can best show the design points: perspective view 1.

The utility model discloses a needle type clamping jaw which comprises a machine frame and a pneumatic finger. Two sliding blocks capable of sliding are arranged in the machine frame, and two clamping jaws of the pneumatic finger are connected with the two sliding blocks respectively. A sliding seat capable of vertically sliding is arranged on the sliding block, and a guide groove matched with the sliding seat is formed in the inner wall of the rack; a plurality of steel needles are arranged at the top of the sliding seat, and guide shafts are arranged on the two sides of the sliding seat respectively and extend into the guide grooves; the clamping jaw is controlled through the pneumatic finger, then the sliding block is driven to move, the sliding seats capable of vertically sliding on the sliding block move under the action of the guide groove in the inner wall of the rack, the motion trail of the steel needles is more stable and accurate, and the steel needles on the two sliding seats can be flexibly arranged in a staggered mode after penetrating through the rack so as to meet different grabbing requirements. The driving structure is simple, the requirement for installation space is small, and the requirement for arranging the clamping jaws in batches can be well met.