30results about How to "Easy to hold down" patented technology

The invention provides an intelligent goods shelf control system which comprises a goods shelf, a sensing device and a server switchboard, wherein the goods shelf comprises at least one obliquely arranged goods shelf layer, each goods shelf layer is provided with a goods shelf label, and one end, close to the goods shelf label, on each goods shelf layer is lower than the end, far away from the goods shelf label, on the goods shelf layer; the sensing device is arranged at one side, close to the goods, of the goods shelf label, and is used for detecting whether goods are placed at the end of the position of the goods shelf layer close to the goods shelf label and sending out a signal on whether the goods are placed; and the server switchboard is connected with the sensing device by a wireless network, and is used for receiving the signal on whether goods are placed and processing the signal. The system can greatly reduce personnel allocation, thus saving the labor cost, lowering the whole operation cost and reducing the time and energy of personnel for counting the quantity of goods.

The invention discloses an automatic carton adhesive tape sealing device, and relates to the technical field of carton packaging, and aims to solve the problems that an adhesive tape sealing strip needs to be used manually for existing carton packaging, the efficiency is low, and the carton packaging efficiency is influenced. The device includes two conveying rollers, the two conveying rollers aresleeved with a conveying belt, the outer ring of the conveying roller is movably sleeved with a supporting plate arranged in the vertical direction, a top plate is fixedly connected to the top of thesupporting plate, a push rod motor is fixedly arranged in the top plate in a sleeved mode, first guide rods penetrating through the top plate are arranged on the two sides of the push rod motor, a mounting plate is fixedly connected to the bottom ends of the first guide rods, and a cutting device is fixedly connected to the bottom of the mounting plate. Thus, the adhesive tape can be convenientlyand automatically cut off, automatic edge pasting can be conducted on the heads and the tails of two continuous cartons during cutting off, the cartons can be conveniently and continuously sealed, and the packaging efficiency of the cartons is improved.

The invention discloses a storage device facilitating stacking and used for transporting paper products. The storage device comprises a box body, a lead screw, a connecting rod groove, a connecting rod, a damp-proof plate, a rotating plate, an inserted rod and a lock catch. According to the storage device facilitating stacking and used for transporting the paper product, clamping plates and protective pads are arranged, when a rocking handle is rotated, the rocking handle drives the lead screw to rotate, the lead screw drives a sliding block to move in sliding grooves, the sliding block drivesthe clamping plates to move, the lead screw drives the clamping plates to move conveniently, the lead screw is provided with two threads, the two threads of the lead screw are respectively arranged inside the two sliding grooves, meanwhile, the two threads inside the sliding grooves are opposite in line so that the lead screw conveniently drives the clamping plates to move in a similar direction,meanwhile, the paper products in the box body are convenient to clamp, the phenomenon that the paper products shake due to overlarge gaps among the paper products in the transportation process, and the center of gravity is unstable to obstruct the transportation is avoided, meanwhile, protective pads are arranged on one sides, close to the paper products, of the clamping plates, and the paper products are prevented from being damaged in the clamping process.

The invention discloses a combined photovoltaic power generation device which is convenient to disassemble and assemble, including mounting frames, the bottom of the mounting frame is movably clampedwith a base, and an inverter body is fixedly installed inside the chassis, the top of the base is provided with a protrusion which is matched with the opening size of the mounting frame, and a terminal connected with the inverter body is embedded on the top of the bump, a clamping device is fixedly installed at the top middle part of the bump, and a suction disk body is fixedly connected with thetop outside of the protrusion through a spring shock absorber, a photovoltaic power generation plate is movably adsorbed on the top of the suction disk body, a limiting device for fixing the photovoltaic power generation plate is installed on both sides of the front and rear ends of the mounting frame, and heat dissipation fins are embedded on both sides of the mounting frame. The invention has the advantages of simple and reasonable structure design, easy disassembly and maintenance, simple operation, small occupying area, convenient handling, safety and stability, wide application range, andis favorable for popularization.

The invention relates to an examination device, in particular to an oral cavity distraction examination device for the department of pediatrics. The technical problem to be solved is to provide the oral cavity distraction examination device for the department of pediatrics, which can change the distraction size of an oral cavity of a child and is convenient to observe. An oral cavity distraction examination device for the department of pediatrics comprises a mounting plate; a distraction assembly which is mounted on the mounting plate and distracts the oral cavity in a rotating manner; and a tongue pressing assembly which is mounted on the mounting plate and performs tongue pressing in a rotating manner. By changing the position of an upper bite plate, the distraction size of the oral cavity can be changed, observation of a doctor is facilitated; the tongue of the child can be conveniently and rapidly pressed through the tongue pressing assembly, and a user can conveniently use the device; the observation is conducted through amplification of a convex lens, and observation is conducted by changing the angle of the convex lens through a rotating rod, so that the observation of the doctor is clearer; and the tongue of the child is pressed by screwing a second bolt, so that the tongue of the child can be pressed more conveniently.

The invention relates to the technical field of photovoltaic module processing. The invention discloses base material cutting and forming equipment for photovoltaic cell panel processing. The equipment comprises a workbench. A control structure, a cutting structure and a pushing structure are arranged on the workbench. The pushing structure comprises a straight plate, the straight plate is provided with a second threaded rod, the second threaded rod is connected with a pushing motor, a sliding block is arranged on the second threaded rod, the sliding block is connected with a pushing plate, the pushing plate is connected with third threaded rods, and the third threaded rods are connected with T-shaped blocks. The cutting structure comprises an electric push rod, the electric push rod is connected with the workbench, the electric push rod is provided with a top plate, the top plate is provided with a limiting sliding groove, the limiting sliding groove is communicated with a first threaded rod, the first threaded rod is connected with a driving motor, the first threaded rod is provided with a limiting sliding block, and the limiting sliding block is provided with a cutting motor. According to the invention, the T-shaped blocks are used for pushing a photovoltaic cell panel machining base material between the two sets of T-shaped blocks to move, pushing advancing force is uniform, meanwhile, after the T-shaped blocks clamp the photovoltaic cell panel machining base material, the position of the photovoltaic cell panel machining base material cannot deviate relative to the position of the cutting motor, and actual cutting is facilitated.

The invention discloses a touch control chip simulation pressing test jig which comprises a test machine body. A sliding groove is formed in a machine table of the test machine body, a chip groove is formed in a plate, a buffer groove is formed in a lifting plate, a lifting block is arranged in the buffer groove in a sleeved mode, and a probe is installed on the lifting block. The chip can be conveniently put in or taken out by controlling the plate to move out of or move into the sliding groove; by controlling the magnetism of the electromagnet, the pressing rod can be controlled to be retracted into the cavity or moved out of the cavity, so that one end of the pressing rod can be conveniently controlled to press the chip, the chip is fixed in the chip groove, and the situation that the test is influenced by movement and dislocation of the chip is avoided; the laser lamp emits light rays along the probe to irradiate the chip, so that the probe and the chip can be positioned, and the condition that the probe and the chip are staggered is avoided; the plurality of probes are controlled to test the chips in the plurality of chip grooves, so that the test efficiency can be improved; and the first spring is used for buffering, so that the condition that the chip is crushed can be avoided.

The invention discloses adjustable windproof cotton airing equipment, and relates to the field of airing equipment. The adjustable windproof cotton airing equipment comprises a moving base, a U-shapedplate is fixedly installed at the top of the moving base, the same rotating shaft is fixedly installed on the inner walls of the two sides of the U-shaped plate, a large semi-cylinder is rotatably installed on the rotating shaft, a telescopic hydraulic cylinder is fixedly installed at the top of the large semi-cylinder, a telescopic column is fixedly installed at the output end of the telescopichydraulic cylinder, two storage rods are rotatably installed at the top end of the telescopic column, a sleeving plate is fixedly connected to the telescopic hydraulic cylinder in a sleeve mode, supporting plates are fixedly installed on the two sides of the sleeving plate, and two storage shafts are rotatably installed on the sides, close to each other, of the two supporting plates. The adjustable windproof cotton airing equipment is easy to operate, adjustable, capable of enabling cotton to be fully illuminated, capable of being turned over, convenient to air, convenient to collect and storeafter airing is completed and convenient to use.

The invention discloses a plate shearing machine. The plate shearing machine comprises a base; a plurality of plate supporting columns are fixed at the upper end of the base; a supporting platform is arranged between every two adjacent plate supporting columns; a shearing platform is further fixed on the base and is arranged at the front ends of the plate supporting columns and the supporting platforms; an upper fixing base is arranged right above the shearing platform and is fixedly connected to the base; a first driving device and a second driving device are arranged in the upper fixing base; the lower end of the first driving device is fixedly connected to a cross beam; a plurality of compression springs are fixed to the lower end of the cross beam; the lower ends of the compression springs are fixedly connected to pressing blocks; the lower end of the second driving device is connected to a knife rest; and a shearing knife is arranged on the knife rest. The plate shearing machine is simple in structure principle, convenient to operate and high in shearing efficiency, and plates can be fixed and sheared rapidly.

The invention discloses an installation structure of a wide-angle lens, which is simple in structure and easy to achieve, the arrangement of a sixth meniscus lens enables large-angle light entering anoptical lens to be well turned back, the reduction of the aperture of the optical lens becomes possible, the realization of a wide-angle function is facilitated, and the arrangement of a fifth meniscus lens is convenient for further turning back the light. The outer diameter of the rear-end lens can be reduced; a fourth biconvex lens, a third biconvex lens, a second biconvex lens and a first meniscus lens are arranged, so that subsequent imaging is facilitated; during assembly, the first meniscus lens, the second biconvex lens, the first space ring, the third biconvex lens, the second space ring, the fourth biconvex lens, the fifth meniscus lens, the third space ring and the sixth meniscus lens are sequentially abutted against the lens cone so as to keep the distance between the lenses, and the lens is stable and practical.

The invention discloses an express item label sticker production equipment with a tidying function. The express item label sticker production equipment with the tidying function comprises a top plate,a hydraulic cylinder, a supporting frame and a cutting mechanism, wherein the hydraulic cylinder is installed at the upper end of the top plate, and a telescopic rod at the lower end of the hydrauliccylinder penetrates through the top plate to be connected with the supporting frame. The express item label sticker production equipment with the tidying function belongs to the field of label production equipment. An L-shaped block is additionally arranged on a cutting workbench, inserting holes are formed in the upper portion and the lower portion of the end face of the L-shaped block and facilitate the installation of a clearing and installing structure, the clearing and installing structure is provided with a fixed rod and a rotating rod, rod bodies of the fixed rod and the rotating rod are connected with cleaning cloth in a sleeve mode, the cleaning cloth is fixedly connected with a limiting ring, the clearing and installing structure can clear chippings of express item label stickers, a collecting type base is fixed to a tidying structure and a cutting workbench, fixing connection among the tidying structure, the cutting workbench and the collecting type base is achieved, an embedded collecting box arranged on the collecting type base can collect the chippings, and the chippings at the upper end of a platform can be swept into a collecting bin to be collected.

The invention discloses a multifunctional mathematics teaching ruler which comprises a positioning bracket. A laser bracket is mounted on the upper portion of the positioning bracket; a plurality of laser emission modules are mounted at the bottom of the laser bracket; a stable rotating geometric superposition device is mounted in the middle of the positioning bracket and comprises fixed frames; and the lower portions of the fixed frames are connected with adjusting nuts. The stable rotating geometric superposition device and an angle rotating positioning plotter are combined, a reference linecan be formed on a drawing, and the graphic plotting precision can also be greatly improved; and light-transmitting plates with light-proof geometry graphic rods are combined with lasers emitted by the laser modules, the light-proof geometry graphic rods can block light rays, penetrating through the light-transmitting plates, of the lasers emitted by the laser modules, thus the light rays are projected to the drawing, and geometry graphics corresponding to the light-proof geometry graphic rods are formed, so that a teacher does not need to manually plot the drawing, the standard geometry graphics can be formed on the drawing, and plotting reference is facilitated. The multifunctional mathematics teaching ruler is suitable for teaching plotting.

The invention relates to a dustproof and rainproof cloth, in particular to an automatic dustproof and rainproof cloth for a mining truck container. The invention aims to solve the technical problem ofhow to provide the automatic dustproof and rainproof cloth, capable of facilitating operation by people, for the mining truck container. The automatic dustproof and rainproof cloth for the mining truck container comprises a mounting plate, a supporting plate, an outer case and the like, wherein the right side of the container is connected with the mounting plate; the lower part of the right sideof the mounting plate is connected with the supporting plate; and the left side of the top of the supporting plate is connected with the outer case. According to the automatic dustproof and rainproofcloth for the mining truck container, a shielding cloth can be unrolled through an unrolling device and shield ores from rainwater so as to avoid the influence on the processing of the ores, prevent dust on the ores from flying out, and avoid the influence on the environment; and a rolling-up device can retract the shielding cloth so that the shielding cloth can be not only automatically unrolledbut also automatically rolled up so as to facilitate the operation by people.

The invention relates to the technical field of Chinese herbal medicine planting equipment, in particular to a Chinese herbal medicine planting pot. The Chinese herbal medicine planting pot comprisesa planting pot body, an adsorption structure, a fixing structure, an adjusting structure, a mounting structure and an overturning structure. According to the planting pot, the planting pot body can besupported conveniently through the adsorption structure, and meanwhile, the planting pot body can be adsorbed to clean ground conveniently through the adsorption structure, so the stability of the planting pot body is improved, and the situation that the planting pot body is overturned is prevented; the planting pot body is conveniently fixed to the top end of the adsorption structure through thefixing structure, and the planting pot body is conveniently assembled and disassembled; the adjusting structure can be used as a support for winding of vine Chinese herbal medicines, and the adjusting structure can conveniently adjust length to adapt to vine Chinese herbal medicines in different growth periods, so the yield of the Chinese herbal medicines is increased; nutrients and water can beconveniently added into the planting pot body through the mounting structure and the overturning structure, so a good nutrition environment is provided for Chinese herbal medicines in the planting potbody, and the growth effect of the Chinese herbal medicines is improved.

The invention relates to the field of garment hang tag processing, in particular to a continuous gilding paper attaching device for garment hang tag processing. The problems that in the gilding papercutting process, gilding paper is prone to being rolled up and wrinkled, the attractive degree of a hang tag is affected when the wrinkled gilding paper is attached to the hang tag, and incomplete attachment is caused are solved. The continuous gilding paper attaching device for garment hang tag processing comprises a support, a driving mechanism and the like. The driving mechanism is mounted on the support. The rolled gilding paper is pulled out and clamped between two conveying wheels on the two sides, guide wheels make contact with the gilding paper, when the gilding paper clamped between the two conveying wheels is pulled, an arranged overrunning clutch enables transmission gears on the upper side and the lower side to rotate in the same direction, and the gilding paper can be clampedand pulled out conveniently. The situation that the transmission gears on the upper side and the lower side rotate in opposite directions to influence spreading of the gilding paper, and consequentlyattachment wrinkles occur can also be avoided.

The invention provides a medicine smashing device for traditional Chinese medicine materials. The medicine smashing device comprises a plate frame, an installing shell, connecting blocks, fastening bolts, a power distribution box, a switch, a smashing box, a connecting ring, smashing blades, a fastening cover structure, a collecting bag structure and an installing base structure. The installing shell is inserted in the inner side of the plate frame. Meanwhile, the connecting blocks on the upper portion of the outer wall are connected with the fastening bolts. The fastening bolts penetrate theplate frame and are in thread connection with the connecting blocks. The power distribution box is welded to the left end of the plate frame, and the switch is installed on the front surface. The smashing box is installed at the upper end of the installing shell. The connecting ring is installed on the longitudinal middle portion below the interior of the smashing box in a bolt manner. Meanwhile,the smashing blades are welded to the left end and the right end. According to the medicine smashing device, by arranging the fastening cover structure, a pressing disc can press the traditional Chinese medicine materials beneficially and conveniently, and meanwhile, the problems that some traditional Chinese medicine materials are splashed easily, and cannot be smashed conveniently are avoided.

The invention discloses a teaching aid with an automatic paper winding and unwinding function. The teaching aid comprises a base and a writing board. Shells are welded to the two sides of the top of the base separately, and supporting plates are connected to the top of the base in a rolling mode through bearings and located in the shells. Driven wheels are fixed to the bottoms of the supporting plates through connecting rods. A positive and negative rotation motor is fixedly mounted in the middle of the bottom of the base. An opening is formed in the inner side of the shell. End covers are fixed to the top ends of the two sides of the writing board. Rollers are mounted on the two sides of the writing board through bearings. Pressing plates are rotatably connected to the bottoms of the endcovers through bearings. Mounting grooves are formed in the bottoms of the pressing plates and the tops of the supporting plates. Rotary shafts are movably mounted in the mounting grooves between thepressing plates and the supporting plates, and writing paper bodies are wound on the surfaces of the rotary shafts. The teaching aid is simple and reasonable in design, convenient to operate, adjust and move and capable of turning paper automatically; time and labor are saved, the paper utilization rate is increased, and safety and reliability are ensured; and the teaching aid is wide in application range and suitable for popularization.

The invention discloses a fixture used for furniture assembly. The fixture comprises a fixed seat and rectangular support columns; four groups of fixed columns are fixedly welded to the upper end of the fixed seat; a penetrating vertical rectangular channel is formed in each fixed column; the lower half part of each rectangular support column is arranged in the inner cavity of the vertical rectangular channel of the corresponding fixed column; the upper half part of each rectangular support column is arranged to be a cylinder, and the lower half part of each rectangular support column is arranged to be a rectangular column; a first baffle and a second baffle are fixedly welded to the periphery of each rectangular support column; each second baffle is arranged above the corresponding firstbaffle; a first through hole for a pressing plate to penetrate through is drilled in each rectangular support column; a penetrating second through hole is also drilled in each pressing plate; and eachpressing plate is arranged between the corresponding first baffle and the corresponding second baffle. The fixture used for furniture assembly not only can be suitable for furniture different in sizebut also is high in friction and is capable of fixing the furniture more stably.

The invention relates to a fixing device for medical treatment, and in particular, relates to a fixing device for medical pediatric assisted transfusion. The technical problem to be solved comprises that provided is the fixing device for pediatric assisted transfusion, wherein the fixing device can fix hands of pediatric patients and is beneficial to treatment and rehabilitation of the pediatric patients. The technical scheme comprises that the fixing device for assisted transfusion of medical pediatrics comprises a large support plate, a hemisphere, a large connecting shaft, an arc pressing plate, a ratchet wheel, a pawl, a small swing plate, a small connecting shaft, an arc plate spring, a small connecting block, a bandage, a large pressing block and the like. The left side wall of the large support plate is provided with a large groove running through the upper side and the lower side. The fixing device for medical pediatric assisted transfusion not only can conveniently press a hand of the pediatric patient, but also can conveniently fix an arm of the pediatric patient, and avoids the movement of the hand of the pediatric patient, so that the transfusion can be proceed smoothly.

The invention discloses an amplifying lens structure. An image side end circular limiting channel, a first circular channel, a second circular channel, a third circular channel, a fourth circular channel and an object side end circular opening channel are sequentially arranged in an outer lens barrel from the image side to the object side, and the inner diameters of the channels are arranged fromsmall to large. A first biconcave lens, an inner lens barrel, a second biconcave lens, a first space ring, a third meniscus lens, a second space ring, a fourth biconvex lens, a third space ring, a fifth meniscus lens and a sixth biconvex lens which are sequentially close to one another in the direction from the image side to the object side are mounted in the outer lens barrel; and the inner sidewall of the circular opening channel at the object side end is in threaded connection with a compression nut used for pressing the sixth biconvex lens, so that the components from the first biconcavelens to the sixth biconvex lens are ensured to be close to each other in sequence so as to keep the distance between the lenses, and the lens is stable and practical.

The invention discloses a vacuum prepressing underwater double-adhesive film repairing method. The vacuum prepressing underwater double-adhesive film repairing method comprises the following steps ofleveling a flexible cloth pad and a repairing film on a film pressing plate, and fixing the flexible cloth pad and the repairing film through fixing clamps; wiping a hole to be clean with a towel under water, and filling and blocking the hole with a sand bag; applying adhesive special for a vacuum film to the middle below the repairing film, and applying special underwater sealant to the peripherybelow the repairing film; and finally, putting the repairing film into the hole for gluing through the film pressing plate. The invention further discloses a vacuum prepressing underwater double-adhesive film repairing device. The vacuum prepressing underwater double-adhesive film repairing device comprises the film pressing plate. The bottom face of the film pressing plate is square; the two sides of the film pressing plate are each provided with the corresponding fixing clamp; and a handle rod is arranged above the film pressing plate and movably connected with the film pressing plate. Thevacuum prepressing underwater double-adhesive film repairing device and method have the beneficial effects that construction is easy to conduct; the problems that the construction period is prolonged,and the construction cost is obviously increased are avoided; and meanwhile, the problem of conducting film repairing in an underwater environment with the overlying water depth being 0.3 m or abovecan be effectively solved.

The invention discloses a high-quality plate printing machine. The high-quality plate printing machine comprises a conveying platform. Support columns are fixedly connected to the lower surface of theconveying platform. A groove is formed in the upper surface of the conveying platform. A rotating rod is rotationally connected to the inner wall of the groove. Drums are fixedly connected to the surface of the rotating rod. According to the high-quality plate printing machine, by arranging a first hydraulic telescopic column and a pressure plate, the pressure plate can be conveniently pressed, through a motor, a belt, transmission wheels, the drums and the rotating rod, and the plate can be moved conveniently while being pressed and fixed; by arranging a fixing plate, a second hydraulic telescopic column, a round rod and a printing drum, the plate can be pressed by the printing drum conveniently and can be printed with patterns or text marks, pigment is sprayed to the surface of the plate through a nozzle and a hollow pipe, and excessive pigment on the surface of the plate is scraped off by adjusting the angle of a scraper blade; and the pigment on the surface of the plate is dried conveniently through a hot-air blower and an air pipe, and molding is performed, so that the plate printing machine has the high-quality printing effect.

The invention discloses a traceless bra machine which is provided with six stations, traceless bra cloth placed on a cloth carrying plate can be conveniently processed into traceless bra finished products through procedures of hot pressing, cup punching, bonding and the like, the mechanical processing process is achieved, processing efficiency can be improved, practicability is good, only one person is needed for operation in the specific implementation process, personnel cost can be saved; besides, due to the arrangement of the circulating station line, under the action of the power mechanism, the carrier plate placement hollowed-out seat drives the cloth carrier plate to circularly move, so workers do not need to transfer the cloth carrier plate after the seamless bra is processed, and manpower is saved.

The invention relates to the technical field of furniture production, in particular to an intelligent carbonization correction device for household processing. For the problem that an intelligent carbonization correction device for household processing in the prior art is inconvenient to use, the following scheme is put forward; the intelligent carbonization correction device comprises a carbonization tank and a material taking mechanism, a material taking hole is formed in the top of the carbonization tank, and a sealing cover is installed on the top of the material taking hole; a transmission mechanism for driving the sealing cover to rotate is installed on the top of the carbonization tank; and the material taking mechanism comprises an installation frame installed on the top of the carbonization tank, an installation plate and a material taking pipe installed on the bottom face of the installation plate, and two first electric telescopic rods used for driving the installation plate to ascend and descend are installed on the installation frame. The intelligent carbonization correction device is reasonable in structure and easy to operate, wood in the carbonization tank can be conveniently sampled at any time so as to judge the carbonization degree of the wood; and meanwhile, heat loss, caused during material taking, in the carbonization tank can also be avoided, and therefore the energy consumption is effectively reduced, and the intelligent carbonization correction device is easy to use and popularize.

The invention discloses an automatic clamping mechanism for an automobile oil pump on an experiment table, and belongs to the field of oil pump clamping. The automatic clamping mechanism is characterized by comprising a pump seat, a supporting seat and a clamping module used for fixing the automobile oil pump. The supporting seat is fixedly installed on the rear side of a pump base through bolts,and the automobile oil pump is placed on the supporting seat. A pump opening flange of the automobile oil pump is attached to one side of the pump base, and the clamping module comprises an upper guide rail mounting plate, a lower guide rail mounting plate, a driving mechanism and a clamping mechanism. A rack is pushed through an air cylinder to move in the direction of a guide rail, the rack drives a gear to rotate, the gear rotates to drive a rotating shaft to rotate, a pressing plate is thus driven to rotate by 180 degrees, the pump opening flange of the automobile oil pump is pressed, theautomobile oil pump thus can be clamped and taken down, and the air cylinder is driven to retract. When the automatic clamping mechanism is used for clamping the automobile oil pump, the clamping efficiency is high, the automation degree is high, and the labor intensity of workers is reduced.

The invention relates to the technical field of welding clamp equipment, in particular to an automatic leakage nozzle laser welding clamping device, and aims at solving the problems caused by the situation that in the prior art, clamping is not firm in the bottom plate welding process. The device is technically characterized by comprising a bearing platform, and a containing groove for containinga bottom plate is formed in the middle of the bearing platform; and multiple cross beams are arranged on the bearing platform, the cross beams are arranged in the length direction of the platform, pressing blocks are arranged below the cross beams, each cross beam corresponds to two pressing blocks, the pressing blocks are arranged in a sliding manner in the length directions of the cross beams, and fixing devices for fixing the pressing blocks are arranged on the cross beams. The pressing blocks slide in the length directions of the cross beams, the distance between every two pressing blocksis adjusted, and therefore different widths can be formed, so that the edge position of the bottom plate is effectively pressed, and the situation that due to upward warping of the edge of the bottomplate, laser defocusing is caused during light welding, and the welding quality is affected is avoided.