36 results about "One pass" patented technology

This invention relates to the field of heat insulation pad processing technology, specifically to a heat insulation pad counting and packaging equipment, including a feeding device, a quantitative discharging device, and a packaging device. The feeding device delivers stacked heat insulation pads to the quantitative discharging device, which counts the heat insulation pads and removes any excess, then delivers the quantitatively packaged heat insulation pads to the packaging device. In the packaging device, a second belt-pressing mechanism packages the heat insulation pads in one pass, and a reversing mechanism flips the packaged heat insulation pads to a suitable orientation for foam filling. A foam filling mechanism loads the sorted foam from the foam hopper onto the heat insulation pads. Then, the first belt-pressing mechanism packages the packaged heat insulation pads together with the foam. Using this counting and packaging equipment, automatic counting and packaging of sheet products such as heat insulation pads can be achieved, which helps to improve production efficiency and save labor costs.

The present invention discloses a high-precision three-roller wall reduction and leveling device, comprising rollers, guide plates, and mandrels. The three rollers are all active rollers, and a guide plate is provided between adjacent rollers. The mandrel is located in a forming space surrounded by the guide plates and the rollers. The end of the mandrel with a smaller diameter is the feed end, and the billet enters the forming space from the smaller end of the mandrel. The present invention also provides a high-precision three-roller wall reduction and leveling process. Utilizing the above-mentioned high-precision three-roller wall reduction and leveling device, after the billet contacts the rollers, it spirals forward along the direction of the rolling line. Under the joint action of the rollers and the mandrel, the wall reduction and leveling rolling process is achieved, and the billet is output from the end with a larger diameter of the mandrel to complete the rolling of the seamless pipe. The present invention utilizes the guide plates to cooperate with the rollers to confine the billet within the forming space. The rollers and the mandrel cooperate to complete the wall reduction and leveling process in one pass, thereby increasing the rolling speed and avoiding the accumulation of forming errors caused by the long rolling process, thereby improving the precision and production efficiency of the seamless pipe product.

This utility model discloses a circuit board curing oven, relating to the field of circuit board processing equipment. The key technical features are: an oven body and two conveyor belts, one forward and one reverse. A buffer platform is provided at one end of the forward conveyor belt, and a flipping plate is mounted on the buffer platform. The flipping plate has a receiving groove on its side facing the forward conveyor belt, allowing it to flip towards the reverse conveyor belt and place the circuit board on it. By using the forward and reverse conveyor belts and the flipping plate, after the circuit board is cured on the front side, it can be directly reversed via the flipping plate and conveyed along the reverse conveyor belt for curing on the reverse side. This method ensures that the front and back of the circuit board are not mixed up, and curing of both sides can be completed in one pass, guaranteeing high curing efficiency.

An example operation may include one or more of receiving a data request for a partition by a requesting chip within a drawer of a multi-drawer system, determining that the data request cannot be satisfied by any chips within the drawer, incrementing a value of a counter associated with the partition, assigning resources to at least one pass-through chip within the drawer for broadcasting the data request to at least one other drawer of the multi-drawer system, receiving an additional data request for the partition, and in response to the value of the counter being at a predetermined threshold value, proactively assigning additional resources to the at least one pass-through chip for broadcasting the additional request to the at least one other drawer in the multi-drawer system prior to determining whether the additional data request can be satisfied by any of the chips within the drawer.

The utility model relates to the technical field of forging dies, in particular to a die structure for forging and forming a water nozzle, which comprises an upper die assembly and a lower die assembly, the upper die assembly is provided with an upper die plate and an upper die head which are fixedly connected with each other, and the lower die assembly is provided with a lower die plate and a lower die head which are fixedly connected with each other. An upper die groove is formed in the end, away from the upper die plate, of the upper die head, a lower die groove is formed in the end, away from the lower die plate, of the lower die head, and the upper die groove and the lower die groove are matched with each other to form a forging and pressing die cavity and a forging and pressing forming water nozzle body part. And a lower sinking hole is formed in the bottom of the groove of the lower die and is configured as a water inlet pipe part for forging and forming the water nozzle. In conclusion, one-time forging forming of the multi-directional protrusions of the water nozzle is achieved through the directional forming structure, and the die structure is simplified; the discharging stability is improved through the elastic ejection design; the multi-stage guide system guarantees the die assembly precision, so that the efficiency is improved, the cost is reduced, and the forging quality and size qualification rate are improved.

Provided are kyphoplasty cannula devices and device systems that include an outer sheath including a main body defining a through-opening extending therethrough, and an outer sheath handle above the main body, the outer sheath handle having a handle opening through at least one end thereof, the outer sheath handle also having a top opening that is contiguous with the through-opening of the main body; and an inner stylet configured to be insertable into the top opening of the outer sheath handle and into the through-opening of the main body. The present systems may also include a plug to plug the top opening after removal of the inner stylet. Also provided are kits and methods of using the present devices and sytems.

To efficiently perform sound welding by suppressing weld defects while suppressing a welding amount and preventing the occurrence of high temperature cracks in flat position welding.SOLUTION: In a narrow groove 50 of horizontal welding, a lower groove angle θ on a lower plate 5A side is set to 35 ° to 45 ° upward from the horizontal, and an upper groove angle α is set to be larger than the lower groove angle θ in a range of 2 ° to 5 °. In the inclined narrow groove welding method, a root gap RG of a narrow groove 50 is set in a range of 9 mm-12 mm, a backing metal 6 is provided which is attached to a lower plate 5A and an upper plate 5B and positions a groove surface lower end part 5A of the upper plate 5B and sets a groove angle and the root gap RG, a contact tip having a wire hole for feeding a weld wire into the narrow groove 50 is inserted, and the lower plate 5A and the upper plate 5B are welded without rotating the contact tip around a nozzle shaft in one pass in the narrow groove 50.SELECTED DRAWING: Figure 3

Crosstalk that occurs during the flushing process may affect the quality of the image formed on the medium. [Solution] In the printing method according to the present disclosure, a first discharge, which is the discharge of liquid for forming an image on a medium P, and a second discharge, which is the discharge of liquid for flushing in a predetermined area outside the end of the medium P in the main scanning direction, are performed in one pass, which is a single movement of the carriage 22 in a predetermined direction, and the second discharge for the nozzle row to be flushed is performed at a timing when the affected nozzle row is located outside the medium P and at least a part of the carriage 22 is in a position overlapping with the medium P when viewed from the direction of the liquid discharge.

This invention relates to the field of milling processes, specifically a general process for machining aircraft engine mounting clamps and bases. It includes the following steps: S1, blanking; S2, cubic milling; S3, drilling and reaming process holes and clamping holes; S4, CNC roughing: roughing is performed using an indexable milling cutter, with a cutting allowance reserved and proper datum surface positioning; S5, CNC finishing: during finishing, except for necessary machining allowances reserved on the web surface, spherical surface, and lug hole surface, all other structural features are machined in one pass; S6, blanking by milling; S7, heat treatment; S8, semi-finish grinding; S9, boring; S10, fitting by fitter; S11, finish grinding; S12, turning; S13, measurement and inspection of parts; S14, disassembly of parts; S15, heat treatment; S16, mechanical inspection. This invention can shorten the manufacturing cycle and reduce production costs.

A kit (110) comprising at least one spectrometer device (112) for obtaining spectroscopy information about at least one sample (114) and at least one external calibration target (116) wherein the external calibration target (116) has a reflectivity is disclosed. The spectrometer device (112) comprises:-at least one detector (118) for detecting the detection light (120) from the sample (114, 116); -at least one optical filter (124) configured for passing incident light in at least one selected wavelength range onto the detector (118); -at least one light source (128) configured for emitting illumination light (130) in at least one optical spectral range; -at least one sample interface (134) configured for allowing the illumination light (130) to illuminate a sample (114) held by the sample interface (134) and configured for allowing light from the sample (114, 116) held by the sample interface (134) to propagate via the optical filter (124) to the detector (118); -at least one first light path (136), where the first light path (136) is configured for allowing the illumination light (130) to propagate via the optical filter (124) to the detector (118) by at least one pass through the sample interface (134); -at least one internal calibration target (122), the at least one internal calibration target having a reflectivity; -at least one second light path (138), where the second light path (138) is configured for allowing the illumination light (130) to propagate via the optical filter (124) to the detector (118) by at least one interaction with the internal calibration target (122); wherein the spectrometer device (112) is configured for performing at least one initial calibration of the second optical path (138) by holding the external calibration target (116) as a sample by the sample interface (134), and wherein a reflectivity of the external calibration target (116) and a reflectivity of the internal calibration target (122) are proportional to each other, where (I), where is a constant. , (I)

This utility model relates to the field of die-cutting tool technology and discloses a cross-cutting blade for cutting the intersection of cutting lines on cardboard. It includes a blade body formed by two intersecting blades, the blade body having a cylindrical structure with a cross-shaped cross-section. The top of the blade body is a cutting edge, the cutting surface of which extends from the intersection to the end of the blade body. Connecting portions extend outward from both sides of the end of the blade body, and these connecting portions are used to connect the blades. This solution achieves cutting of the intersection cutting lines on cardboard through the cross-shaped blade body. The blade body is a one-piece structure with a continuous, uninterrupted cutting surface, thus enabling continuous cutting of the intersection cutting lines and obtaining a smooth, continuous cutting surface. The cutting can be completed in one pass, eliminating the need to tear off the adhesive joint. The blade body can be connected to other straight-shaped blades through the connecting portions for combined use.

The application discloses a rolling process of a battery foil, characterized in that a blank is distributed and rolled according to a three-pass process, and one pass of rough rolling, one pass of medium rolling and one pass of fine rolling are respectively arranged; the reduction of the rough rolling and the medium rolling is 62% to 64%; the process has the advantages that the battery foil product is rolled in three passes, one rolling pass is reduced, the processing efficiency is improved, the processing cost is reduced, the production cost is lowered, and the production capacity is improved.

To provide a recording device capable of improving efficiency of a recording operation.SOLUTION: The printing apparatus includes a conveyance unit that conveys label paper in a conveyance direction, a recording head including a recording element array including a plurality of recording elements arranged along the conveyance direction, a head control unit that controls an operation of the recording head based on recording data, a data storage unit that stores recording data for one pass of the recording head therein, a data writing unit that writes the recording data to the data storage unit, and a determination unit that determines a magnitude relationship between a data length, which is a length of the recording data in the conveyance direction, and a column length, which is a length of the recording element array in the conveyance direction. The data writing part is configured to offset the data writing position of the recording data of the data storage part based on the length of the margin part in the conveyance direction, and newly writes the recording data from the offset position when the determination part determines that the data length of the recording data of the offset data storage part is less than the column length.SELECTED DRAWING: Figure 5

This invention relates to a welding method for the cylindrical body of a stainless steel composite plate equipment, comprising: 1) cutting a V-shaped bevel into the cylindrical body; 2) tack welding the pre-existing weld gaps using a double-gun TIG welding method; 3) longitudinal welding employing a three-layer welding process: the first layer is completed in one pass using a double-gun TIG welding method; the middle layer is completed in one pass using manual arc welding; and the third layer is completed in one pass using manual arc welding; 4) transverse welding employing a three-layer welding process: the first layer is completed in one pass using a double-gun TIG welding method; the middle layer is completed in one pass using manual arc welding; and the third layer is completed using multiple passes of manual arc welding for a final weld finish. This invention not only improves welding efficiency but also produces excellent weld quality, easily meeting the relevant requirements of drawings and specifications.

This invention discloses a method and apparatus for detecting when the radial dimension of a boring tool exceeds its limit. Before boring, the workpiece is mounted on the machine tool table, and the boring tool is mounted on the machine tool spindle. A signal light, power supply, machine tool spindle, and machine tool table are connected in series to form a circuit. A quick-positioning element is used to precisely adjust the detection surface of the boring tool diameter detection device to the maximum diameter of the workpiece's inner hole. The quick-positioning element is removed, and the machine tool spindle is reversed. If the signal light does not illuminate after the boring tool passes the detection surface of the boring tool diameter detection device, the machine tool spindle is returned to forward rotation and normal cutting speed to begin boring. After one pass, the boring tool diameter is increased to boring the remaining material on the inner hole wall of the workpiece. Each time the boring tool diameter is adjusted, the reverse detection process is repeated. If the signal light illuminates, machining must be stopped immediately, and the boring tool diameter must be checked again. This method can detect when the boring tool diameter exceeds the maximum diameter of the inner hole before boring.

The utility model relates to the technical field of pillow processing, and discloses a pillowcase ironing machine for pillow processing, which comprises a bottom plate, a rectangular frame is arranged above the bottom plate, and a double-sided hot pressing mechanism is arranged in the rectangular frame. According to the pillowcase ironing machine for pillow processing, by arranging the double-face hot-pressing mechanism, when the pillowcase ironing machine conducts pillowcase ironing operation for pillow processing, a hot-pressing motor drives hot-pressing rollers to rotate rapidly, the two hot-pressing rollers can apply heat and pressure to a pillowcase from two directions at the same time, and the ironing efficiency is greatly improved through the double-face hot-pressing structure; the ironing task which can be finished by turning over operation originally can be finished at one time at present, the working process is greatly accelerated, meanwhile, each wrinkle of the pillowcase can be effectively smoothed by uniformly heating the double surfaces, the phenomenon of fabric damage or color change caused by excessive heating of the single surface is avoided, the ironing quality of the pillowcase is greatly improved, and the working efficiency is improved. And the processed pillowcase is smoother and more attractive.

The application discloses a rock drilling and blasting method for forming a cutting groove at one time, which comprises the following steps: constructing different-row half-umbrella-shaped and same-row half-fan-shaped blast holes in a slant direction, the angle of the same-row blast holes gradually increases from bottom to top, a rock drilling machine can be fixed at one position to drill all the blast holes; filling the blast holes with explosives, the charge factor is controlled within 65% to 85%, and the length of staggered plugging between adjacent blast holes; setting an initiation sequence, and a cutting groove is formed at one time after initiation. The method is characterized in that the half-umbrella-shaped blast holes and the same-row half-fan-shaped blast holes are arranged, so that the rock drilling machine can drill all the blast holes at one position, the rock drilling machine does not need to be fixed at multiple positions, the rock drilling preparation time is saved, the rock drilling efficiency is greatly improved, and the cutting groove is formed at one time through setting different initiation sequences, so that the circulation process of multiple times of charging, blasting and shovel loading is avoided, and the blasting efficiency and the shovel loading efficiency are improved.

This invention discloses a fixture and method for cutting excess blocks from a cuboid blank. The fixture includes a base, a corner support rod, a positioning block, a nut block, and a positioning screw. The corner support rod has a radially formed fan-shaped notch with a central angle of 90°. A center positioning key is embedded in the center positioning groove on the lower side of the positioning block. Fixing bolts pass through the mounting plate of the positioning block and are tightened into hexagonal nuts embedded in the lower side of the stepped long grooves on both sides of the longitudinal direction of the base. One end of the positioning screw, screwed into the nut block at the other end of the base, abuts against the radial center of the outer circumference of the positioning block. The method includes: 1) marking the cuboid blank; 2) installing the cuboid blank on the fixture and aligning it; 3) clamping the cuboid blank and completing the sawing of the excess blocks. This invention has a simple structure, is very convenient to install and adjust, and can saw off the entire triangular excess block in one pass using a horizontal band saw, significantly improving processing efficiency and greatly reducing processing costs.

The application discloses a method for splicing and rolling of thin sheets of difficult-to-deform metal, wherein a sheet blank with a thickness of 2 mm or above is subjected to 5-13 passes of initial rough rolling on a four-roller or six-roller rough rolling mill by adopting a block method process, and after the thickness is reduced to less than 0.5 mm, the sheet material is not cut at the edge portion, the head and tail are each cut by 50-100 mm, and then the head and tail of a plurality of sheets are spliced and welded, the spliced and welded strip is subjected to one pass of fine rough rolling on a six-roller or twelve-roller or fourteen-roller or twenty-roller finishing mill by adopting a strip method process. The method can realize the processes of one pass of fine rough rolling, on-line edge cutting (welding seam cutting), and multi-pass fine rolling of the spliced and welded strip coil on the finishing mill under a constant roll gap; the double-side scrap edges and the welding seams do not participate in deformation, there are no welding points and welding seams in the overlapping section, and the length of the overlapping section after the rolling and composite connection can be directly used as part of the finished product without the need for post-cutting, thereby simplifying the processing flow, reducing raw material waste, and improving the yield.

The application discloses a groove-bevel edge integrated forming cutter, which comprises a cutter body (4), and a plurality of chip removal grooves (1) are arranged on the periphery of the cutter body, characterized in that a groove machining blade (6) and a bevel edge machining blade (8) are respectively arranged in each chip removal groove through a cutter seat (3), the groove machining blade (6) is arranged on the upper part, the bevel edge machining blade (8) is arranged on the lower part, and the groove machining blade (6) and the bevel edge machining blade (8) are connected to form an integrated cutting edge of a groove-bevel edge surface with an included angle greater than 90 degrees. According to the application, the groove-bevel edge forming can be realized by only one pass, the installation of the bevel edge machining blade adopts a cost-reducing design, and the design of the groove machining blade can avoid the generation of a tool joint mark.

The utility model relates to the technical field of medical instruments, and discloses a medical dressing, which comprises a dressing main body provided with a laying point, and the laying point is suitable for correspondingly covering an affected part; and the outer edge part is arranged on the outer edge of the auxiliary material main body, at least one pipe passing part is correspondingly arranged on the outer edge part, distance scale marks are correspondingly arranged on a connecting line between the pipe passing part and the laying point, and the pipe passing part is suitable for an external pipeline to pass through. The laying point is correspondingly projected at the penetrating position of an external pipeline, the outer edge part is provided with a pipe passing part through which the external pipeline extends out of the covering range of the dressing main body, the connecting line between the laying point and the pipe passing part is the extending track of the external pipeline, and distance scale marks are arranged on the connecting line. The medical staff can quickly read and identify the length value of the external pipeline covered by the dressing main body, further can effectively read the extension length of the pipeline outside the affected part, and can confirm whether the pipeline meets the requirement by combining the property of the external pipeline.

This invention belongs to the field of steel sheet processing technology, and particularly relates to a steel sheet chamfering device and a steel sheet processing machine. It includes a machine base with a feed trough located inside the machine base and extending to the outside of the machine base at one end. It also includes a grinding mechanism disposed inside the machine base and located on the side of the feed trough near the machine base. The grinding mechanism includes several grinding components arranged sequentially along the feed trough. A steel sheet is placed in the feed trough, with the end abutting the feed trough near the grinding mechanism. The steel sheet is pushed, passing through the grinding components in one pass. The grinding components sequentially grind the ends of the steel sheet, completing the chamfering of the steel sheet ends. Placing the steel sheet in the feed trough and pushing it forward saves operator effort, eliminating the need to lift the steel sheet to align it with a bench drill for chamfering. Passing through multiple grinding components sequentially allows for the sequential grinding of the steel sheet, avoiding the unevenness caused by grinding the steel sheet in one pass.

The invention relates to the technical field of spiral fluted tap grinding, and discloses a composite grinding device for a multi-section arc-section-shaped spiral fluted tap. A composite base body is integrally formed on the outer edge of a grinding wheel base body, segmented grinding ring belts are assembled on the outer edge of the composite base body in a sintering mode, and a heat dissipation area is arranged on the composite base body; the outer side of the segmented grinding annular belt is correspondingly provided with a finishing roller, the segmented grinding annular belt completes grinding work at a time, in the process that the composite base body is matched with the segmented grinding annular belt for grinding, abrasive dust generated during grinding operation can be taken away in time, blockage can be prevented, and jumping can be reduced, so that the grinding efficiency is improved. Abrasive dust and oil mist mixtures are continuously sucked through the porous composite base body, the grinding area is kept clean, and the heat dissipation efficiency of the grinding wheel during grinding can be improved through the heat dissipation area.

The invention relates to the technical field of pole piece production, in particular to a pole piece. The pole piece comprises a pole foil material, a first coating layer and a second coating layer, the foil material comprises a short edge, the short edge is located on one side of the foil material in the length direction, the first coating layer is arranged on one side of the foil material in the thickness direction, and the second coating layer is arranged on the other side of the foil material in the thickness direction. The distance between the first coating layer and the short edge is different from the distance between the second coating layer and the short edge, so that the two passing rollers are not in contact with the first coating layer and the second coating layer at the same time, and one passing roller is in contact with one of the first coating layer and the second coating layer firstly; one passing roller is in contact with one of the first coating layer and the second coating layer, and the other passing roller is in contact with the other one of the first coating layer and the second coating layer, so that the gap between the two passing rollers can be changed twice, but the change degree of each time is small, the instantaneous acting force of the passing rollers on the pole piece can be effectively reduced, and the technical effect of reducing the damage probability of the foil is achieved.

This invention provides a sheet-formed tableware and its manufacturing method. The tableware includes a main body and a handle, with the main body located at one end of the handle. Both the main body and the handle are formed by molding or vacuum forming from a single sheet of material. The tableware is formed in one pass by a die. Along the length of the tableware, one part is a punching area, and the other part is a shearing area. The die has a movable mold and a punching block that can move relative to each other. The punching block has a punching surface for punching the tableware. The punching surface corresponding to the punching area of ​​the tableware is perpendicular to the movement direction of the movable mold, and the punching surface corresponding to the shearing area of ​​the tableware is inclined to the movement direction of the movable mold. The manufacturing method of the tableware includes making a blank of the sheet material, molding or vacuum forming the blank into a three-dimensional shape, placing the sheet material in the die, and moving the movable mold towards the punching block, so that one part of the sheet material is punched and another part is sheared, obtaining the tableware in one pass. This invention can reduce the manufacturing cost of tableware and makes the tableware smooth and strong.

The utility model relates to the technical field of drill bit machining, and discloses a split type drill bit welding device which comprises a base, a welding frame and a welding assembly are arranged on the base, the welding frame is used for supporting and fixing a drill bit, and the welding assembly is used for welding the drill bit. The welding frame comprises a motor, a clamping jaw and a supporting rod which are installed on the base, and the output end of the motor is connected with the clamping jaw. The position of the welding head is synchronously adjusted through the action that the drill bit rotates to adjust the position, the purposes that the distance of the welding head is automatically adjusted, and the connecting seam is continuously welded are achieved, the effect that one side of the connecting seam is welded at a time is achieved, and then welding of the two sides of the connecting seam can be completed by deflecting the welding rod. The distance between a welding head and a welding seam does not need to be manually adjusted, and the welding efficiency and quality are high; and by arranging the resistance unit, it is ensured that the welding head continuously makes contact with the welding seam in the welding process, the desoldering condition is prevented, and the welding quality is further improved.

The application belongs to the technical field of aircraft sheet metal manufacturing, and discloses a forming method for an arc-shaped frame with a Z-shaped cross section, which comprises the following steps: S10, obtaining an initial blank according to the unfolding of the arc-shaped frame; S20, forming a theoretical trajectory according to the curvature radius R of the arc-shaped frame; S30, arranging at least three groups of rollers on the theoretical trajectory, the first group of rollers being flat rollers, the last group of rollers being Z-shaped rollers matched with the cross-sectional shape of the arc-shaped frame, and at least one group of rollers in the middle being transition rollers; S40, preparing a mold according to a numerical model to obtain an initial part on site through testing; S50, if the initial part on site is formed without problems, executing S60; if the initial part on site is formed with problems, optimizing the forming scheme of the mold until the forming is without problems; S60, scanning the formed part by a three-dimensional profile scanner and comparing the formed part with the arc-shaped frame, and formulating a springback scheme according to the comparison result; S70, rectifying according to the springback scheme, and repeating S60 until a part with a springback value within a tolerance range of the arc-shaped frame is obtained, and the obtained part is formed by one pass, so that the forming efficiency of the part is improved.

The invention discloses a circular saw blade for cutting paper, and aims to overcome the defect that the phenomenon of burrs on cut edges is easy to occur during paper cutting. The saw blade comprises a saw blade body, a plurality of tool bits are arranged on the edge of the saw blade body in the circumferential direction at intervals, the top ends and the front ends of the tool bits are each of a V-shaped structure, and the left sides and the right sides of the top ends of the tool bits incline to form top left side faces and top right side faces; a left side upper edge is formed at the junction of the top left side face and the front left side face, and a right side upper edge is formed at the junction of the top right side face and the front right side face. The paper cutting circular saw blade is good in paper cutting effect, edge cutting burrs are not prone to occurring, curled paper can be cut off at a time, and working efficiency is high.

The utility model discloses a locking mechanism of a safety door guardrail, which comprises a first lock component, a second lock component and a lock groove, the first lock component and the second lock component are arranged on an upper frame of an inner door of the door guardrail, the lock groove is arranged on an outer frame of the door guardrail, and the first lock component is provided with a first movable locking piece which can extend into the lock groove to lock or retreat from the lock groove to unlock. The second lock assembly is provided with a second movable locking piece which can interfere with the first lock assembly, the first movable locking piece and the second movable locking piece are each provided with a locking position and an unlocking position, and when the second movable locking piece is located at the locking position, the first lock assembly is prevented from being operated to be unlocked. And when the second movable locking piece is located at the unlocking position, one lock assembly is allowed to be operated for unlocking. According to the utility model, the one-way lock assembly and the two-way lock assembly are adopted, and the one-way lock assembly can be operated only when the two-way lock assembly is in an unlocking state, so that the first movable locking piece is separated from the lock groove for unlocking, and therefore, misoperation of children can be reduced, and the safety and the practicability of the door guardrail are improved.

The utility model relates to the technical field of machining equipment, in particular to multifunctional aluminum profile machining equipment, a support part is used for containing an aluminum profile and supporting a punching part, the punching part is fixedly connected with the support part, the punching part comprises an annular plate, a plurality of strip-shaped plates and a plurality of punch parts, the strip-shaped plates are all fixedly arranged in the annular plate, and the punch parts are fixedly connected with the support part. The punch part is slidably connected with the annular plate and the strip-shaped plate, when the punch part slides along the annular plate and the strip-shaped plate and is linearly arranged, the punching part punches a plurality of linearly arranged holes in an aluminum profile at a time, and when the punch part slides along the annular plate and the strip-shaped plate and is arranged at a fixed point, the punching part punches the holes in the aluminum profile. The punching part is used for punching a plurality of holes which are arranged in a fixed point mode in the aluminum profile at a time, punching of different types of holes in the aluminum profile can be completed without replacing different punching head parts, time is saved, and punching efficiency is improved. And the punch part is fixed in the specific guide groove part, so that the punch part is prevented from rotating, and the hole forming effect is prevented from being influenced.