34 results about "Fold-forming" patented technology

The utility model relates to the technical field of freezer facility manufacturing, and particularly discloses a folding tool for net basket manufacturing. The platform is equivalent to the outer bottom surface of the mesh basket, the frame is equivalent to the inner bottom surface of the mesh basket, folding devices are connected around the platform in a hinged mode, a cross-shaped protruding groove and two parallel vertical plates are arranged on the platform, and notches are formed in the vertical plates. The frame is provided with a longitudinal cross rod capable of being inserted between the two vertical plates, the notch is matched with a fixed handle rod, the fixed handle rod comprises a straight rod, a cross rod is fixed to one end of the straight rod in a penetrating mode, and the distance between the cross rod and the end point of the straight rod is smaller than the distance between the cross rod and the side face of the cross rod. Semi-finished products folded and formed by the folding device are uniform in specification, convenient and fast.

The utility model discloses an iron core forming device which comprises a cutting mechanism, a bending mechanism and a curling mechanism. The cutting mechanism comprises a supporting frame, a blanking seat, a blanking head and a driving assembly. The bending mechanism comprises a supporting seat and a bending plate, and a bending gap is formed between the bending plate and the supporting seat; the curling mechanism comprises a plurality of arc-shaped extrusion plates, and the arc-shaped extrusion plates can surround to form a circular structure so as to extrude and surround the claw-level plates to form the iron core. According to the iron core forming device provided by the utility model, the iron sheet is cut into the forming sheet through the cutting mechanism, the folded forming sheet is bent into the claw-level plate through the bending mechanism, and finally the claw-level plate is curled into the iron core through the curling mechanism, so that the bending part of the iron sheet in the iron core forming process can be completed by a worker through operating an instrument, and the forming efficiency is greatly improved. Therefore, compared with pure manual processing, the processing is simpler and more convenient.

The utility model discloses a discharging device of an automatic pre-folding forming machine, which relates to the technical field of automatic pre-folding forming machines, and comprises a discharging bin, a discharging mechanism is arranged on the discharging bin, the discharging mechanism comprises a discharging track, the outer surface of the discharging bin is provided with the discharging track, and the discharging track is used for guiding a formed workpiece to move; the material pushing plate is located in the discharging rail, and the material pushing plate is used for pushing the formed workpiece to move; the material ejecting air cylinder is fixedly connected to the end of the discharging bin, the output end of the material ejecting air cylinder is fixedly connected with a connecting plate, and the connecting plate is used for being connected with the material pushing plate; and the mounting assembly is connected to the side edge of the discharging bin. The discharging mechanism is arranged, the ejection air cylinder, the pushing plate and the discharging bin are matched, so that discharging starting is facilitated, smooth installation of the whole discharging mechanism can be achieved through the installation assembly, the height of the discharging bin can be adjusted in the later period, and good adaptability is achieved.

The utility model provides a foldable extension socket, which comprises at least two extension socket assemblies, and is characterized in that the two adjacent extension socket assemblies of a connecting assembly are rotatably connected, so that the two adjacent extension socket assemblies can be switched between an unfolded state and a folded state; at least one of the two adjacent extension socket assemblies is provided with a connecting assembly, so that the two adjacent extension socket assemblies are kept in a folded state through the connecting assembly. According to the foldable extension socket provided by the invention, the form of the extension socket can be changed through folding, the flexibility is relatively high, the occupied space is reduced, and the portability of the extension socket is enhanced, so that the use requirements of different scenes are met; and the folded form can be effectively kept, good stability is achieved, and the use experience of a user can be optimized.

The utility model discloses a box opening robot suction tool, and relates to the technical field of box opening robots, the box opening robot suction tool comprises a main suction tool assembly and a combined frame, the top of the main suction tool assembly is provided with the main suction tool assembly, and the left end and the right end of the top of the main suction tool assembly are symmetrically provided with pressing rod assemblies; the end, away from the pressing rod assembly, of the pressing rod assembly is connected with an auxiliary suction tool assembly. According to the box opening robot suction tool, the auxiliary guide rail and the adjusting lead screw are arranged at the bottom of the device frame, by means of the mobility of the structure, the first pneumatic suction cup connected with the device frame can be movably adjusted to a certain degree, and therefore good suction operation can be provided for paper box materials within a certain range; and by means of the pressing rod assemblies and the auxiliary suction tool assemblies which are symmetrically arranged on the two sides, the main suction tool assembly can be assisted to suck and clamp the paper box, meanwhile, the machining effect of folding forming can be achieved through structural movement, and therefore the flexibility of the equipment structure and the stability of material clamping are guaranteed.

The utility model provides a blank of a packaging structure and the packaging structure. The blank is used for being folded and formed into the packaging structure. The blank comprises a bottom plate, a top plate, a first expansion piece and a second expansion piece. The first expansion piece is rotatably or separably connected with the bottom plate, the first expansion piece comprises at least one first structure piece, and when the first expansion piece comprises a plurality of first structure pieces, the plurality of first structure pieces are rotatably or separably connected. The second expansion piece is rotatably or separably connected with the top plate, the second expansion piece comprises at least one second structure piece, and when the second expansion piece comprises a plurality of second structure pieces, the plurality of second structure pieces are rotatably or separably connected. The blank is configured to fold or detach the first structural sheet and the second structural sheet so as to change the volume of the folded and formed packaging structure. According to the embodiment of the utility model, the matching degree of the packaging structure and the packaged article is improved, so that the application range of the packaging structure is wider, and the design and processing cost of the packaging structure can be reduced.

The utility model discloses a kind of suitable for automatic turnover forming and ultrasonic welding device of moisture-preserving cigarette case, it includes: sucking disc positioning block (1);Kernel block (2);Ultrasonic generator (3);Up-down moving mechanism (9);Wherein, the sucking disc positioning block (1) is arranged in the center position of the forming welding device, kernel block (2) is installed on up-down moving mechanism (9), and in the upper portion of the sucking disc positioning block (1);The ultrasonic generator (3) is arranged in the side of the forming welding device, and ultrasonic welding head (31) is oriented to the center of the forming welding. The suitable for automatic turnover forming and ultrasonic welding device of moisture-preserving cigarette case of the utility model can automatically complete the turnover folding forming and welding to paper, and obtain complete sealed moisture-preserving cigarette case.

The invention discloses a folding system, and belongs to the technical field of folding equipment, the folding system comprises a first folding roller and a second folding roller which are rotatably arranged on a frame body, and the peripheral surface of the first folding roller is provided with a plurality of clamping grooves distributed around the axis of the first folding roller; pushing teeth corresponding to the clamping grooves in a one-to-one mode are movably arranged on the peripheral face of the second folding roller, the second folding roller is provided with an elastic pushing assembly abutting against the pushing teeth, the pushing teeth are used for pushing conveyed paper into the clamping grooves, clamping teeth are arranged in the clamping grooves, and when the pushing teeth are located in the clamping grooves, the clamping teeth are clamped in the clamping grooves. The material clamping teeth are located on the tops of the pushing teeth, and the pushing springs are located on the sides, away from the material clamping teeth, of the pushing teeth. The tissue folding forming device has the beneficial effects that the stability of the position where the tissue is located in the folding forming groove during folding forming is conveniently guaranteed, and then the forming quality of the tissue folding is conveniently guaranteed.

The utility model discloses a folding forming's thing box, including the frame body, the front side of frame body is equipped with a plurality of insertion port, be equipped with two thing frame in the frame body, be equipped with a plurality of through -hole on the thing frame, two the left and right sides of thing frame are inserted to the corresponding insertion port respectively, be equipped with a plurality of right angle mouth on the frame body, the left and right sides inner wall of frame body all are fixedly connected with hollow block, the left and right sides of frame body all are equipped with the hole of lifting. The utility model has simple structure, convenient to assemble and fold, environmental protection and has good storage and handling function to satisfy the use demand of user under different scenes, improve the practicality and economy of thing box.

The utility model relates to metal plate forming equipment, in particular to a bevel forming machine which comprises a machine frame, a lower pressing module and an upper pressing module are vertically connected to the machine frame in a sliding mode, the lower pressing module comprises a lifting plate, an upper cutter installation base, a shearing and folding upper cutter and an upper cutter pressing block, a transverse groove is formed in the lower end of the upper cutter installation base, and the transverse groove is connected with the lifting plate. A transverse groove is formed in the upper cutter pressing block, a side opening is formed in one side in the width direction of the transverse groove, the upper cutter pressing block covers the side opening, the upper cutter pressing block, the groove wall and the bottom face of the transverse groove jointly define a dovetail groove, a dovetail tenon is arranged on the upper shearing and folding cutter, a first bolt is inserted into the upper cutter pressing block in a penetrating mode, and a screw rod of the first bolt is arranged in an inclined mode. The shearing and folding upper cutter is positioned through the bottom face of the dovetail groove and the contact face of the upper cutter pressing block, it is guaranteed that the position of the shearing and folding upper cutter does not deviate or the deviation amount is small to be negligible after the shearing and folding upper cutter is disassembled and assembled every time, debugging time is saved, and use is convenient.

The utility model discloses a synchronous floating mechanism for 180-degree reverse folding of parts, which is used for reverse folding forming of to-be-processed parts attached to a material belt and comprises a lower die plate. The floating plate can move up and down; the forming assembly is movably installed on the lower die plate relative to the floating plate, and the forming assembly can move in the direction towards or away from the floating plate; the material floating plate further comprises a material conveying part used for containing a material belt, and the material conveying part is located at the end, close to the forming assembly, of the material floating plate. A first forming part is installed on the material conveying part, a second forming part matched with the first forming part is installed on the forming assembly, and the second forming part is located below the first forming part, so that the part is reversely folded and formed. According to the synchronous floating mechanism for the 180-degree reversely-folded part, through cooperation of the first forming part and the second forming part which are arranged on the floating plate, synchronous floating is achieved, meanwhile, it is guaranteed that the part is evenly stressed in the reversely-folded forming process, deformation or deviation is reduced, and machining precision is improved.

The application discloses a square light steel keel roll forming device and product in the technical field of roll forming, and is characterized by comprising a feeding frame, a roll forming device, a forming frame, a blanking frame, a control table and a rack, wherein the roll forming device comprises a pattern forming roller group, a manual dial wheel mechanism, a butt joint and edge folding roller group, a bending edge forming roller group, an edge folding forming roller group, a pipe inner guide plate, a pipe outer guide plate, an extrusion forming roller group and a shaping roller group; the feeding frame, the roll forming device and the forming frame are matched to continuously perform square pipe roll forming work; the roll forming device can pretreat square pipe butt joint work; the dispersed roll forming mode can increase the fault tolerance of the plate before forming; and the forming frame can secondarily compress the square pipe after the square pipe butt joint forming, so that the quality of the square pipe butt joint is improved.

The utility model discloses a multi-bending end part avoiding push-in forming structure. The multi-bending end part avoiding push-in forming structure comprises a pre-inclined bending module, a right-angle folding part bending forming module, an inward folding part vertical pre-forming module and an end part avoiding push-in inward folding forming module which are arranged in sequence, the end part avoiding pushing-in inward-folding shaping module comprises an inward-folding pushing-in wedge block, the inward-folding pushing-in wedge block is connected to an end part forming pressing head, a gradually-inclined front pushing table is arranged corresponding to the end part forming pressing head, the end part forming pressing head is pressed downwards, and the inward-folding pushing-in wedge block is pushed forwards along the gradually-inclined front pushing table; and forming an inward folding punching forming structure which is formed by bending the end part for multiple times in an avoiding and pushing-in manner.

The invention relates to the technical field of packaging box folding forming, in particular to a box body folding forming device which comprises a device body, and the device body comprises an unfolding station, a fixing station and a conveying belt for conveying a packaging box to move between the unfolding station and the fixing station. One side of the fixing station is provided with an operation area for a worker to fix the unfolded side plate, and the device body is slidably provided with a follow-up supporting mechanism moving in the conveying direction of the conveying belt. According to the follow-up supporting mechanism, the supporting pieces on the follow-up supporting mechanism can keep the two unfolded short plates upright, the situation that the unfolded side plates incline or even collapse in the process that the packaging box flows from the unfolding station to the fixing station is avoided, and the unfolded side plates of the packaging box are smoothly fixed at the fixing station.

The utility model discloses an F edge side folding forming device. The F edge side folding forming device comprises an upper die, a lower die, a side folding assembly and a stamping assembly. The upper die comprises an upper clamping plate, an upper stripping plate, a first pressing block and a first slotting tool; the lower die comprises a lower clamping plate; the side folding assembly is arranged above the lower die and comprises a lower stripping plate, a second slotting tool, a first sliding seat and a forming block, the second slotting tool is arranged on the upper end face of a lower clamping plate, the first sliding seat is arranged on one side of the second slotting tool, and the forming block is arranged on the first sliding seat; the stamping assembly is arranged on one side of the side folding assembly and comprises a second sliding seat, a punch, a second pressing block and a first sleeve screw, the second sliding seat is arranged on the upper end face of the lower clamping plate, the punch and the second pressing block are sequentially arranged on the second sliding seat from bottom to top, and the first sleeve screw is embedded in one side of the second pressing block. The forming block, the punch and the second pressing block are used in cooperation and act on the edge of the back plate, positioning is fast and accurate, and side edge punch forming is achieved.

The application belongs to the technical field of heat pipe and particularly relates to a heat pipe wick integrated folding forming method and a multi-scale structure thereof. The application comprises the following steps: S1, silk screen pretreatment; S2, multi-layer positioning and preliminary fixation; S3, precise mold folding forming; S4, composite support layer; S5, winding and positioning; S6, overall sintering forming; S7, post-processing; the structure of the application comprises an integrated folding capillary framework: after the multi-layer high-mesh metal screen is stacked, the folding structure with continuous and regular wave shape is formed along the axial direction of the heat pipe through mold pressing. The framework itself has extremely high capillary pumping capacity; the support layer: closely adhered to the wave peak side of the integrated folding capillary framework, composed of one or several low-mesh metal screens. The application realizes the integration of the capillary material as the flow channel wall surface through structure reconstruction, significantly improves the capillary performance and anti-dryout capacity of the wick, and can greatly improve the heat transfer limit and reliability of the heat pipe.

The invention discloses a high-strength wind-resistant support for a roof and a manufacturing and forming method of the high-strength wind-resistant support, and relates to the field of building roof wind resistance. According to the high-strength wind-resistant support for the roof and the manufacturing and forming method of the high-strength wind-resistant support, the high-strength wind-resistant support comprises a U-shaped support, a mounting unit and a supporting unit. According to the high-strength wind-resistant support for the roof and the manufacturing and forming method of the high-strength wind-resistant support, the U-shaped support is manufactured through an overall stamping and folding forming process, the wind-resistant strength is improved through single-plate stamping forming, the U-shaped support is embedded in the roof panel, exposure corrosion is eradicated, the first reinforcing ribs and the second reinforcing ribs are folded in the double vertical side plates, and lateral instability is eliminated; embedded shear-resistant fixing of the roof panel is achieved through the panel notch, double-bayonet self-locking is conducted on the roof panel through the panel notch, the lateral instability risk is eliminated, one end of the roof panel is embedded into the rear panel notch, mechanical interlocking is formed between the roof panel and the panel notch, and the installation stability of the end of the roof panel and the panel notch is guaranteed.

The utility model discloses a kind of integrally formed seat support frames, the seat support frame is based on single raw material profile folding forming;The seat support frame is rectangular frame structure, and the rectangular frame structure is stretched inwards to form support gasket in any corner position. By folding to form frame structure to raw material profile, and stretching support gasket in the folding process corresponding corner position, based on integrated forming process reduces welding operation frequency, reduces production and processing cost, and improves the structural stability of support gasket, improves the use reliability of seat support frame.

The utility model relates to the technical field of aluminium veneer edge folding, disclose a kind of edge folding forming device for aluminium veneer processing, including edge folding table, the top front side of edge folding table is fixedly connected with support, the front and back of support are respectively provided with connecting piece one and connecting piece two, and the front and back of support one side are respectively fixedly connected with U piece one and U piece two, connecting piece one is installed with edge folding tool, the bottom of connecting piece two is provided with several groups of fixed components, servo motor is provided on the support, the output of servo motor is fixedly installed with driving gear. The utility model is used in cooperation between support, connecting piece one, connecting piece two, U piece one, U piece two, lead screw one, lead screw two, servo motor, driving gear, driven gear one and driven gear two, can realize aluminium veneer fixing and edge folding operation simultaneously, increase work efficiency, can reduce the use of kinetic energy equipment, reduce cost.

1. The name of the design product: high-speed aircraft box folding machine. 2. The use of the design product: for aircraft box folding forming. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The invention discloses a paper tube flanging forming head structure, and relates to the technical field of paper tube processing. The edge folding device comprises a shell, and an edge folding mold is arranged at the bottom of the shell; an adjusting mechanism is arranged in an inner cavity of the shell. The clamping and fixing mode and the radial adjusting mode are switched through axial sliding of the first clamping block and the second clamping block on the adjusting shaft, complex disassembly and assembly are not needed during mold changing, mode switching can be completed only by pressing the driving nut, and the mold changing efficiency is improved; five first threaded rods synchronously drive clamping blocks to move in the radial direction by driving bevel gears and bevel gear rings, it is ensured that when the clamping blocks are synchronously attached to the periphery of a mold and are axially fixed, second threaded rods are in linkage with a transmission cylinder through a synchronous belt and are matched with a restraining sleeve to limit rotation of threaded pipes, and the rubber blocks axially abut against the end face of the mold; the mold is prevented from being eccentric or loosened through double fixation, the edge folding precision and stability are improved, and the rapid installation requirements of molds of multiple specifications are met.

The invention discloses a flexible package side edge one-time folding forming method and system using reinforcement learning, and relates to the technical field of package forming. The method comprises the steps that multi-layer composite material information and interlayer bonding structure information of a target flexible package material are collected; performing transition folding rail angle learning by utilizing reinforcement learning and a preset interlayer alignment index to generate a transition folding rail angle parameter; after a target flexible packaging material is put into the forming unit, one-time folding forming control is carried out, a state sensor is activated for real-time monitoring, and real-time edge folding state data is generated; adjustable parameter learning in the edge folding process is conducted, and updated transition folding rail angle parameters are generated. The technical problem that in the prior art, due to the fact that the interlayer alignment precision is low in flexible package side edge folding forming, the flexible package quality is low is solved, and the technical effects that high-precision one-time folding forming of the flexible package side edges is achieved, and the flexible package quality is improved are achieved.

The invention relates to a folding forming device. The folding forming device comprises a feeding assembly; the supporting mechanism is arranged below the feeding assembly. The two forming mechanisms are oppositely arranged on the two sides of the supporting mechanism, each forming mechanism comprises a forming piece, the forming pieces are configured to move in the horizontal direction, and a folding space with an upper opening is formed between the upper portion of the supporting mechanism and the two forming pieces; the feeding assembly comprises a material suction piece, and the material suction piece is configured to suck the to-be-folded pieces to move to the folding space in the vertical direction and enable the to-be-folded pieces to be arranged on all the surfaces of the folding space in a pressing mode. The inner supporting mechanism is movably arranged on the supporting mechanism; the two cover closing mechanisms are oppositely arranged on the two sides of the inner supporting mechanism, each cover closing mechanism comprises a pushing piece, and the pushing pieces are configured to move in the horizontal direction and enable the upper portion of the to-be-folded piece to be folded in the direction close to the upper portion of the inner supporting mechanism. The to-be-folded piece is pressed in the folding space to be folded through the suction piece, the to-be-folded piece is folded again through the cover closing mechanism, the folding process is achieved, and the folding efficiency is improved.

The utility model relates to stainless steel water tank plate processing technical field provides a kind of stainless steel water tank plate numerical control flanging forming device, it is characterized by including: chassis, the outer surface top of the chassis is provided with sliding assembly, the sliding assembly is used to push plate material to move when forming, the sliding assembly includes, two sliding slots, the utility model, when using, entire chassis and moving plate are heated by heater, stainless steel plate is placed to the upper surface of moving plate, so that the plate material has the effect of heating, after heating plate material then by external power supply starts hydraulic cylinder, hydraulic cylinder pushes down the movement of pressure block, the pressure block is fixed to plate material at this time, by starting electric push rod one pushes moving plate and slides in the inside of sliding slot, hollow plate slides on the outer surface of limiting plate at this time, to drive the plate material on its upper surface to the direction of rotating frame movement.

The invention discloses air filter paper and a folding forming process thereof, and the folding forming process comprises the following steps: providing a sheet-shaped filter paper base material, dividing the filter paper base material into a middle folding region and edge constraint regions on two sides of the middle folding region, respectively forming a pre-folding guide structure in the middle folding region and a guide transfer structure in the edge constraint regions, and carrying out limiting introduction on the edge constraint regions, the initial folded body is formed by sequentially connecting a plurality of pleat sets, the initial folded body is conveyed to a shaping station to form a three-dimensional folded body, the three-dimensional folded body is locally fixed in a pleat set connecting area, then contour closing treatment is conducted, and the filter paper is obtained; the pre-folding guide structure enables folding operation to have direction guide, the guide transfer structure provides necessary positioning support for the filter paper during folding, tight combination of folding layers is ensured, the filter paper keeps accurate folding angles and relative positions in the folding process, and therefore the problems of folding direction deviation and interlayer looseness are effectively reduced.

The utility model provides a special edge folding forming tool for a transition connecting pipe, and belongs to the technical field of diesel engine production. The flanging forming cutter comprises a cutter body, the lower portion of the cutter body is an arc transition face, one side of the upper portion of the cutter body is provided with a bending machine connecting groove, the height H1 of one side edge I of the cutter body is smaller than the height H2 of the other side edge II of the cutter body, and the height difference formed by the side edge I and the side edge II enables an included angle a to be formed between the upper edge and the bottom edge of the cutter body. According to the transition connecting pipe bending device, the problem that the contact part of a bending cutter and an unfolded material is stressed consistently when the transition connecting pipe is bent is solved, the curvature radius of the bent transition connecting pipe meets the drawing requirement, and the problem that two 1 / 2 transition connecting pipes are large in splicing gap and cannot be matched with each other is solved.

The parallel thin lines and the radial thin lines in the representation represent contours only and do not illustrate an ornamentation or decoration on the surface of the product; The characteristic features of the design lie in the shape; The views 1.1-1.11 illustrate the design in unfolded form, the views 1.12-1.23 illustrate the design in folded form and the views 1.24-1.35 illustrate the design in picked up form.

The utility model relates to a PP foaming folder lining 11 automatic gilding, label pasting, compression folding forming integrated machine, the rack top is equipped with feeding table, gilding mechanism, label pasting mechanism and compression folding mechanism in proper order, the discharge port outside of compression folding mould cavity is equipped with material receiving conveyer belt and finished product shaping synchronous belt, finished product shaping synchronous belt is parallelly arranged in the top of material receiving conveyer belt, and finished product shaping synchronous belt cooperates finished product shaping synchronous belt and carries out shaping and conveying to the PP foaming folder lining after compression folding, the both sides of rack mesa are equipped with pull material mechanism respectively, and pull material mechanism includes guide rail and slide bar, and the both sides of rack mesa are equipped with pull material mechanism respectively, and pull material mechanism includes guide rail and slide bar, and the both sides of rack mesa are equipped with pull material mechanism respectively, and pull material mechanism includes guide rail and slide bar, and the both sides of rack mesa are equipped with pull material mechanism respectively, and pull material mechanism includes guide rail and slide bar, and the both sides of rack mesa are equipped with pull material mechanism respectively, and pull material mechanism includes guide rail and slide bar, and the both sides of rack mesa are equipped with pull material mechanism respectively, and pull material mechanism includes guide rail and slide bar, and the both sides of rack mesa are equipped with pull material mechanism respectively, and pull material mechanism includes guide rail and slide bar, and the both sides of rack mesa are equipped with pull material mechanism respectively, and pull material mechanism includes guide rail and slide bar, and the both sides of rack mesa are equipped with pull material mechanism respectively, and pull material mechanism includes guide rail and slide bar, and the both sides of rack mesa are equipped with pull material mechanism respectively, and pull material mechanism includes guide rail and slide bar, and the both sides of rack mesa are equipped with pull material mechanism respectively, and pull material mechanism includes guide rail and slide bar, and the both sides of rack mesa are equipped with pull material mechanism respectively, and pull material mechanism includes guide rail and slide bar, and the both sides of rack mesa are equipped with pull material mechanism respectively, and pull material mechanism includes guide rail and slide bar, and the both sides of rack mesa are equipped with pull material mechanism respectively, and pull material mechanism includes guide rail and slide bar, and the both sides of rack mesa are equipped with pull material mechanism respectively, and pull material mechanism includes guide rail and slide bar, and the both sides of rack mesa are equipped with pull material mechanism respectively, and pull material mechanism includes guide rail and slide bar, and the both sides of rack mesa are equipped with pull material mechanism respectively, and pull material mechanism includes guide rail