793 results about "Irregular shape" patented technology

The invention relates to a surrounding rock over-break and under-break detection method and a monitoring and early warning system for a curved tunnel, and belongs to the technical field of tunnel engineering. The method comprises the following steps: firstly, based on supervision of a bounding rectangle and a design file, quickly extracting a median line of a tunnel; the median line is used as a framework of the tunnel form and can accurately reflect the bending degree and direction of the tunnel; then, the meso-line infinitesimal vertical line cluster technology is utilized to realize refined extraction of the tunnel section, and it is ensured that high-precision section data can be obtained even in a complex bent tunnel; on the basis, the quasi-Monte-Carlo method is introduced to calculate the back-break volume, the quasi-Monte-Carlo method serves as an efficient numerical integration method, the volume of a complex geometric body can be approximately solved through statistical analysis of random samples, and the method is particularly suitable for back-break calculation of irregular bodies such as tunnels and has the advantages of being high in calculation efficiency, high in calculation accuracy and high in calculation precision. According to the method, the calculation precision is improved, the calculation time is remarkably shortened, and powerful support is provided for instant decision making of a construction site.

The invention relates to the technical field of tire production and processing, in particular to a tire sealing film packaging machine capable of improving sealing film attractiveness. According to the tire sealing film packaging machine, the rack is arranged below the thermal shrinkage station and meshed with the gear on the first positioning shaft, so that a tire can automatically rotate for at least one circle in the thermal shrinkage process, and it is guaranteed that all parts of the surface of the tire are evenly heated. The problem that the tire side wall and the tire tread are heated unevenly due to a traditional fixing mode is effectively solved, and the shrinkage uniformity and the attaching effect of the heat shrinkage film are remarkably improved. Due to the fact that the tire can rotate in the thermal shrinkage station, the thermal shrinkage film can be more evenly attached to the surface of the tire, and wrinkles and irregular shapes on the appearance are eliminated. And the final film sealing structure is smoother and more attractive, and the overall packaging quality and market competitiveness of the product are improved.

The invention relates to the technical field of putty powder production and crushing, and discloses impact crushing equipment based on putty powder production, the impact crushing equipment comprises a crusher, the crusher comprises a main frame, a fixed jaw plate, an outer frame and a movable jaw plate, a crushing cavity is formed between the fixed jaw plate and the movable jaw plate, the main frame is also provided with a driving assembly and a controller, the driving assembly acts on the movable jaw plate, and the controller is connected with the fixed jaw plate. The movable jaw plate is driven to move away from or close to the fixed jaw plate in a reciprocating mode, and hammering mechanisms are symmetrically arranged on the front position and the rear position of the main machine frame. According to the impact crushing equipment based on putty powder production, the hammering mechanism and the control mechanism are arranged, impact force applied by a hammer head is utilized, marble blocks can be further crushed, the clamped marble blocks are loosened, and therefore the clamping and blocking phenomenon caused by the fact that the marble blocks are large in size or irregular in shape can be eliminated; and moreover, through vertical reciprocating hammering of the hammer head, the blocking condition can be quickly handled, so that the manual handling time is further shortened.

The invention discloses a fiber fabric defect detection method and device, relates to the technical field of fiber fabric defect detection, and solves the problems that in the prior art, a model is low in robustness and accuracy when processing complex backgrounds, small-size defects or extreme length-width ratio defects, and light weight and detection performance are difficult to consider at the same time. The method comprises the steps that a data set and an SRSE-YOLO model are constructed, an SCConvBS module, an RL-SPPF module, an SCE-C2f module and an Inner-DIOU loss function are introduced into the SRSE-YOLO model on the basis of a YOLOv8 model, a small target detection head with the scale of 160 * 160 is added, then model training and application are carried out, the capturing capacity of complex textures and detail features can be enhanced, and the capturing efficiency of the SRSE-YOLO model is improved. Compared with the prior art, the method has the advantages that the calculation amount and the parameter amount are reduced while the detection precision is improved, effective fusion of multi-scale features of the model is realized, the detection performance of small or irregular-shaped defects is improved, and the recognition rate of the small defects and the precision of a detection frame are greatly improved.

The utility model discloses an anchor chain take-up and pay-off device for a ship, which relates to the technical field of ship equipment and comprises a base, a winding machine is mounted at the top of the base, a rotating shaft is rotatably connected to the top of the base, a guide wheel is fixedly connected to the outer side of the rotating shaft, grooves are equidistantly formed in the outer side of the guide wheel, and an annular groove is formed in the outer side of the guide wheel. The guide wheel is provided with the grooves and the annular grooves, the guide wheel can perfectly fit with the shape of an anchor chain, the anchor chain is more stable in the winding and unwinding process, and the guide wheel is more stable in winding and unwinding process, more stable in winding and unwinding process, more stable in winding and unwinding process, more stable in winding and unwinding process, more stable in winding and unwinding, more stable in winding and unwinding, and more stable in winding and unwinding. The clamping or disorder phenomenon caused by the irregular shape of the chain ring is avoided, the efficiency of winding and unwinding the anchor chain is improved, and potential safety hazards caused by misoperation or equipment failures are reduced.

The utility model discloses a cargo storing and taking mechanism, a cargo storing and taking robot and a cargo storing and taking system, relates to the field of automatic cargo storing and taking, and aims to meet the storing and taking requirements of various cargoes in different shapes. The goods storing and taking mechanism comprises a supporting base, a clamping mechanism and a blocking mechanism. The supporting seat comprises a supporting piece; the clamping mechanism comprises a sliding assembly and clamping parts arranged in pairs, the sliding assembly is slidably installed on the supporting piece in the first direction, and the clamping parts are movably installed on the sliding assembly in the second direction. The blocking mechanism comprises a second blocking piece and a first blocking piece, the second blocking piece is installed on the supporting piece, and the first blocking piece is movably installed on the sliding assembly in the third direction; wherein the first direction and the second direction are located in the horizontal plane and intersect, and the third direction is different from the first direction and the second direction. The goods storing and taking mechanism can be suitable for goods in regular shapes and goods in irregular shapes, the working modes are multiple, and the functions are richer.

The invention belongs to the technical field of feed conveying, particularly relates to a silage aggregate conveying device and method, and aims to solve the problem that stable operation of a conveying belt is affected due to uneven load on the conveying belt during bearing when caked silage is conveyed, the silage aggregate conveying device comprises a tool bottom plate, and two conveying plates are fixedly connected to the tool bottom plate; a plurality of round holes are formed in the two sides of the two conveying plates, and the interiors of the two opposite round holes are connected with the same rotating shaft through bearings; the conveying belt is in transmission connection with the exteriors of the multiple rotating shafts, and the conveying belt is used for conveying the silage; and the conveying motor is arranged on one side of one conveying plate. The silage collecting and conveying device and method have the advantages that caked silage irregular in shape and inconsistent in height can be flatly laid and disassembled, so that the conveying belt is uniform in bearing stress, and stable operation of the conveying belt is improved.

The utility model provides an engine test section assembly welding fixture, and relates to the technical field of welding fixtures, the engine test section assembly welding fixture comprises a base, one side of the base is provided with a positioning device, one side of the base is provided with an adjusting device, the positioning device comprises a mandrel screw, the mandrel screw is fixedly connected with the base, and the adjusting device is connected with the mandrel screw. The positioning device comprises a base, a mandrel screw is arranged on the base, the surface of the mandrel screw is in threaded connection with a nut, the surface of the mandrel screw is sleeved with a conical ring, the surface of the nut is larger than the inner wall of the conical ring, and the side, close to the mandrel screw, of the base is fixedly connected with a limiting frame. The situation that positioning is difficult due to the fact that the parts are irregular in shape and complex in combination structure is reduced, convenience and adaptability are improved when personnel position the parts of different sizes and shapes, and then production efficiency is improved, production cost is reduced, and the part production cycle is shortened.

There is provided a decorative sheet having excellent design properties, i.e., low gloss, and having fingerprint resistance, high durability (particularly scratch resistance or contamination resistance), and processability. A decorative sheet (1) according to this embodiment includes: a base material layer (2); a surface protective layer (5) provided on one surface of the base material layer (2); and a pattern layer (3) provided between the base material layer (2) and the surface protective layer (5), in which the surface protective layer (5) has ridge-like parts provided to project in a ridge-like shape and form an irregular shape on the surface, RSm / Ra of the irregular shape of the surface protective layer (5) is within the range of 10 or more and 300 or less, the surface protective layer (5) contains an ionizing radiation curable resin as a main material, the ionizing radiation curable resin contains, as a main component, a tetrafunctional acrylic resin containing a repeating structure and the repeating structure is any one of the structures of ethylene oxide, propylene oxide, and ε-caprolactone.

To provide a stainless steel and the like excellently bondable to a non-metal material.SOLUTION: A stainless steel (1) has an irradiation part (2) irradiated with pulse laser (PL) at least in part on a surface (10). The irradiation part (2) includes a plurality of recesses and a plurality of protrusions adjacent to the recesses. The recesses and the protrusions are in indeterminate forms respectively. The protrusions have a width of 0.1 μm or more and 200 μm or less in a planar view, a gap between the protrusions located with the recesses in between is not beyond 300 μm, and a surface expansion ratio in the irradiation part is 1.1 or larger.SELECTED DRAWING: Figure 1

The invention belongs to the technical field of oil and gas field development, and particularly relates to an experimental determination method for the debris settling velocity of an irregular-shaped bridge plug. The method comprises the following steps: collecting bridge plug scraps flowback on site, classifying and testing the volume and density of the bridge plug scraps according to the material of the bridge plug scraps, measuring the shape parameters of the bridge plug scraps by using an image processing method, combining five bridge plug scrap shape characterization parameters of roundness, aspect ratio, radius ratio, sphericity and equivalent diameter, and taking a correlation coefficient R2 as an evaluation index, the correlation among the shape parameters of the bridge plug chippings is compared, the aspect ratio, the radius ratio and the roundness are determined to serve as main parameter characteristic parameters of follow-up calculation, the settling speed of the bridge plug chippings is measured through a static settling experiment, and a drag coefficient model suitable for the bridge plug chippings in the irregular shape is established on the basis of a spherical drag coefficient model. The model is fitted by using the measured settling velocity data, and theoretical support is provided for the design of the debris flowback flow parameters of the bridge plug of the shale gas horizontal well.

The invention provides a clamping mechanism and a robot with the clamping mechanism, the clamping mechanism is used for clamping a target workpiece, a penetrating opening is formed in the target workpiece, and the clamping mechanism comprises a supporting frame, a clamping mechanism and a driving mechanism, and the supporting frame is movably arranged along a preset track; the clamping assembly is arranged on the supporting frame, the clamping assembly comprises a first clamping piece and a second clamping piece, and the first clamping piece and the second clamping piece are movably arranged in the direction close to each other or away from each other, so that after the supporting frame stretches into and penetrates through the opening, the first clamping piece and the second clamping piece are attached to the inner wall face of the target workpiece correspondingly; and the target workpiece is clamped. The sheet metal part stacking device solves the problem that in the prior art, the stacking efficiency of sheet metal parts in irregular shapes is low.

The utility model discloses an adjustable supporting clamp, which is applied to the technical field of supporting clamps, and is characterized by comprising a base and a plurality of floating supporting seats which are movably connected to the base along the vertical direction based on a lifting adjusting component, a plurality of floating supporting rods used for abutting against and supporting the bottom face of the special-shaped workpiece are evenly and movably connected to the floating supporting base on the basis of the floating assembly, and a crimping block used for crimping the top face of the special-shaped workpiece is further slidably connected to the floating supporting base on the basis of a sliding rod. The supporting device has the technical effects of being simple in structure and capable of meeting the supporting requirements of workpieces in irregular shapes.

The invention relates to the technical field of clamps, in particular to an industrial robot welding clamp device which comprises two supporting seats, rotating seats are rotatably mounted on the inner walls of the top ends of the two supporting seats, a welding supporting plate is jointly and fixedly mounted on the inner sides of the two rotating seats, and a cavity is formed in the top end of one supporting seat. According to the fixing clamp, a to-be-welded part can be clamped, the friction between the to-be-welded part and the fixing clamp can be improved through a rubber material, the stability of the to-be-welded part in the clamping process can be improved, the to-be-welded part in an irregular shape can be stably clamped to the inner side of an anti-sliding block through arrangement of a clamping groove, and the applicability of the fixing clamp can be improved; and meanwhile, an anti-skid block on the inner side of the fixing clamp can be cooled, a welding part in the welding process is further cooled, the situation that the fluidity of molten metal of the welding part is enhanced due to the fact that the temperature is too high in the welding process can be avoided, and the defects of too wide welding seams, uneven surfaces, undercuts and the like can be avoided.

The invention provides a directional multi-wire slicing method for an irregular single crystal ingot. The method comprises the following steps: S1, directionally cutting a cutting end face parallel to a target crystal orientation plane from the irregular single crystal ingot; s2, filling and shaping the single crystal ingot cut in the step S1 to obtain a single crystal shaping body with a regular shape, and exposing the cut end surface outside; s3, orienting the single crystal complementary body, and carrying out multi-line slicing to obtain a plurality of cutting blades; and S4, removing the complementary material on the cutting sheet to obtain the wafer. According to the method, the regular-shaped structure beneficial to multi-line slicing processing is formed for the irregular single-crystal ingot in a filling mode, so that the irregular single-crystal ingot can be cut into a plurality of wafers conforming to the target crystal orientation at a time, the loss of crystal materials can be obviously reduced, and the processing period is obviously shortened.

The utility model belongs to the technical field of circular knife machines, and particularly discloses a circular knife machine capable of preventing materials from deviating during die cutting, which comprises a workbench, two fixing plates are arranged above the workbench, and a deviation preventing component is arranged between the two fixing plates. The deviation preventing assembly comprises two connecting rods, the two connecting rods are fixedly connected with the corresponding fixing plates respectively, the opposite ends of the two connecting rods are both fixedly connected with limiting boxes, and the inner sides of the two limiting boxes are both provided with limiting grooves. The two sides of the material are blocked and limited by the limiting boxes and the arc-shaped blocks and cannot exceed the limited range, so that the limiting effect is achieved in the horizontal direction, the material is prevented from deviating in the machining process, the die cutting precision and accuracy are improved, the problems of size deviation, irregular shape and the like caused by deviation are reduced, and the production efficiency is improved. Therefore, the quality and the consistency of products are improved.

The invention discloses a three-dimensional S-shaped bent inner concave runner design method and system. The design method comprises the following steps that a runner inlet molded line and a runner outlet molded line of a supersonic speed stamping runner are obtained; n discrete points are extracted in the circumferential directions of the inlet molded line and the outlet molded line to form N groups of inlet and outlet discrete point pairs; the change rule of S-shaped curve parameters is set in the circumferential direction of the runner inlet molded line / runner outlet molded line, and N S curves are obtained; acquiring a coordinate set of N * M discrete points on the curve set by M parallel interception planes; enveloping to generate an S-shaped curved surface, calculating the area of the two-dimensional cross section graph, and obtaining a flow channel sectional area change rule in the flow direction and a slope change rule of a center curve of the S-shaped curved surface; and judging whether the design is reasonable. The method can be suitable for computer-aided design of flow channels transited from various patterns including irregular patterns to circles or ellipses, and can meet the design of flow channels with offset inlet and outlet positions.

The utility model discloses a mechanical arm clamping jaw mechanism, a mechanical arm and a robot, the mechanical arm clamping jaw mechanism comprises a clamping jaw shell, a moving assembly, a first clamping assembly and a second clamping assembly, the moving assembly is arranged in the clamping jaw shell and used for providing clamping power for the first clamping assembly and the second clamping assembly, the first clamping assembly and the second clamping assembly each comprise a movable arm, a movable block and a clamping plate which correspond to the first clamping assembly and the second clamping assembly, the first clamping plate and the second clamping plate which are symmetrically arranged are used for clamping an object to be clamped, and when the object to be clamped is in an irregular shape, the first clamping plate and the second clamping plate are clamped according to the specific shape of the object to be clamped. The first clamping plate and the second clamping plate apply certain rotating force to the first movable block and the second movable block correspondingly, so that the first movable block adaptively rotates relative to the first movable arm, the second movable block adaptively rotates relative to the second movable arm, and finally the clamping jaw mechanism smoothly clamps irregular objects. And the applicability of the clamping jaw mechanism is improved.

The invention belongs to the technical field of numerical control machine tools, and discloses a multifunctional tool clamp for a numerical control machine tool, which comprises a mounting frame, a mounting ring is fixedly mounted at the top of the mounting frame, a gear ring is rotatably mounted in the middle of the mounting ring, and a driving assembly for driving the gear ring to rotate is arranged on the mounting frame. A plurality of annular fixing rods which are arranged at intervals are fixedly installed on the gear ring, rotating rods are rotationally connected to the tops of the fixing rods, an adjusting mechanism used for driving the rotating rods to swing is arranged at the position below the middle of the gear ring, and adaptive clamping mechanisms are installed on the rotating rods; according to the clamping device, an object with the outer surface in a regular shape or an irregular shape can be clamped, the use range is widened, and the use effect is improved.

The special-shaped workpiece auxiliary clamp comprises a bottom plate, a threaded rod is arranged on the side edge of a motor, sliding blocks are arranged at the left end and the right end of the outer portion of the threaded rod in a sleeved mode, a rotating ring is arranged on the lower portion of an air cylinder, a fixing plate is arranged on the lower portion of the rotating ring, fixing blocks are arranged at the left end and the right end of the fixing plate, and chucks are assembled on the lower portions of the fixing blocks. And an anti-skid pad is assembled on the inner side of the chuck. According to the special-shaped workpiece auxiliary clamp, the position and the angle of the chuck can be conveniently adjusted according to the shape of a workpiece through sliding of the sliding block and rotation of the rotating ring, meanwhile, the stability of the workpiece is enhanced by arranging an anti-skid pad in the chuck, and the situation that when the chuck clamps and fixes the workpiece, due to the irregular shape of the workpiece, the workpiece cannot be damaged is avoided. According to the special-shaped workpiece clamping device, due to the fact that the clamping head is arranged, a workpiece is prone to falling off from the clamping head in the workpiece clamping process, the device cannot effectively fix the workpiece, and then the fixing stability of the special-shaped workpiece is greatly improved, and the machining accuracy of the special-shaped workpiece is improved.

The invention relates to the technical field of mechanical arms, and particularly discloses an automatic clamping mechanical arm for a three-proofing cloth processing production line, which comprises an automatic mechanical clamping arm and a grabbing mechanism, and the grabbing mechanism is arranged on the front side of the automatic mechanical clamping arm; the outer wall of the grabbing mechanism is slidably sleeved with the telescopic frame, telescopic grooves are formed in the upper end and the lower end of the front side of the telescopic frame, moving grooves are formed in the left end and the right end of the front side of the telescopic frame, and first sliding grooves are formed in the left side and the right side of an inner cavity of each telescopic groove in the front-back direction; the front and rear ends of the first guide rod are respectively arranged on the front and rear sides of the inner cavity of the first chute. According to the device, efficient and stable grabbing and carrying of the three-proofing cloth with the irregular shape after cutting are achieved, falling and distortion of the three-proofing cloth in the carrying process are effectively prevented, it is guaranteed that the surface of the three-proofing cloth is smooth and free of wrinkles, and therefore the appearance quality of the three-proofing cloth is directly improved, and a good foundation is laid for subsequent procedures.

The invention discloses a cargo storing and taking mechanism, a cargo storing and taking robot, a system, a method, a device and a medium, relates to the field of automatic cargo storing and taking, and aims to meet the storing and taking requirements of various cargoes in different shapes. The goods storing and taking mechanism comprises a supporting base, a clamping mechanism and a blocking mechanism. The supporting seat comprises a supporting piece; the clamping mechanism comprises a sliding assembly and clamping parts arranged in pairs, the sliding assembly is slidably installed on the supporting piece in the first direction, and the clamping parts are movably installed on the sliding assembly in the second direction. The blocking mechanism comprises a second blocking piece and a first blocking piece, the second blocking piece is installed on the supporting piece, and the first blocking piece is movably installed on the sliding assembly in the third direction; wherein the first direction and the second direction are located in the horizontal plane and intersect, and the third direction is different from the first direction and the second direction. The goods storing and taking mechanism can be suitable for goods in regular shapes and goods in irregular shapes, the working modes are multiple, and the functions are richer.

The invention discloses a scene filling method and device for digital twinning and a medium, and the method comprises the steps: determining a to-be-filled region in a digital twinning scene, and generating a geometric region based on the to-be-filled region; dividing the geometric region to obtain a plurality of sub-regions; and for each sub-region in the plurality of sub-regions, filling the filling target in the sub-region until scene filling of all the sub-regions in the geometric region is completed. The geometric region is usually in an irregular shape, so that direct filling of the whole geometric region is difficult to realize, the geometric region is divided into a plurality of sub-regions, the shapes of the sub-regions are relatively simpler, filling is simpler, scene filling of the geometric region can be completed by filling each sub-region, and the scene filling efficiency is improved. Therefore, the labor cost and the time cost are reduced, and the manufacturing efficiency is improved.

The utility model relates to a positioning chuck for pump body machining, and belongs to the technical field of pump body machining. The device mainly comprises a machine base, a rotating disc, a driving assembly, a clamping assembly, supporting seats, supporting rollers and a supporting assembly, the driving assembly is installed on the machine base, the rotatable rotating disc is installed on the driving assembly, the supporting seats are evenly arranged on the machine base in the circumferential direction of the rotating disc, and the supporting rollers used for supporting the rotating disc are installed on the supporting seats. Clamping assemblies and supporting assemblies which can be adjusted in the radial direction of the rotary disc are evenly installed on the rotary disc in the circumferential direction. By arranging the clamping assembly and the supporting assembly which can be adjusted in the radial direction of the rotary disc, the pump body with the irregular shape is supported, clamped and positioned, operation is convenient and fast, the machining requirements of pump body workpieces of different types and different shapes can be met, and good positioning accuracy and stability are achieved; and the problem that the pump body deviates in the long-time machining process is effectively solved, so that the machining precision of the pump body is guaranteed, and the product quality is further improved.

The invention discloses a partitioned cold deformation method and device for a complex forge piece, and belongs to the technical field of material machining, the method comprises the following steps: a, the forge piece is partitioned, a first lug piece used for clamping the forge piece is arranged on one side of the forge piece, and a second lug piece used for clamping the forge piece is arranged on the other side of the forge piece; b, a forge piece is placed on a lower die, and a first lug piece and a second lug piece are pressed and fixed through a lower die pressing plate; and c, the lower die is moved, the to-be-cold-pressed area of the forge piece is moved to the area corresponding to the upper die, and subarea cold pressing is conducted in sequence. Through rigid fixing of the lug and dynamic displacement of the lower die, full-area accurate positioning of the complex forge piece under one-time clamping is achieved, the problems of unstable clamping of irregular shapes and repeated positioning errors are effectively solved, and efficient and uniform reduction of the residual stress of the complex forge piece is achieved through partitioned cold pressing.

The invention belongs to the technical field of numerical control tool production, and particularly relates to a hardness detection device for numerical control tool production. A detection head is mounted in the middle of the detection machine body; the middle part of the detection machine body is fixedly connected with a first fixing frame; the inner wall of the first fixing frame is slidably connected with a toothed rail. The outer wall of the toothed rail is fixedly connected with two sets of supporting pieces. The middle of the supporting piece is rotationally connected with a tooth block, and the tooth block and the tooth rail are arranged in a mutually-meshed mode. The top of the toothed rail is fixedly connected with a tray, and the tray is located at the bottom of the detection head. The middle of the tray is slidably connected with a fixing strip. By means of the matched fixing strips, the problem that materials placed in the middle of the tray are in irregular shapes, so that the materials are difficult to clamp and fix through original planar fixing strips can be solved, the follow-up detection precision of the materials is improved, meanwhile, in the descending process of the tray, the fixing work on the materials can be loosened, and the material mounting and dismounting time is shortened.

An apparatus for gripping fragile or irregularly shaped objects is provided. The apparatus includes a passive gripper assembly including an actuator for providing load to the passive gripper assembly. The passive gripper assembly further includes fingers to transmit the load to the object. Each finger includes a mechanical linkage to direct the load to the object, having a first end connected to the actuator and a second, free end. Each finger further includes a contact assembly disposed at the free end of the mechanical linkage that acts as a gripping interface. At least one of the contact assemblies is passive including deflectable elements configured to deflect upon contacting the object to distribute a gross clamping pressure. The load causes the fingers of the passive gripper assembly to close around the object such that the contact assemblies contact and apply the gross clamping pressure to the object.

The utility model relates to the technical field of mechanical welding, and discloses a welding device for packaging machinery, which comprises a welding table, sliding rails I are arranged on the two sides of the surface of the welding table, screw rod assemblies are mounted between the two sliding rails I, a sliding seat I and a sliding seat II are mounted on the screw rod assemblies on the two sides respectively, and sliding rails II are fixed on the tops of the sliding seat I and the sliding seat II; a supporting table and a mounting frame are arranged on the two second sliding rails in a sliding mode correspondingly. According to the mechanical welding requirements, the mechanical parts are installed in the first welding frame and the second welding frame, then the screw rods at the two ends are adjusted correspondingly, the screw rods push the abutting blocks to be tightly attached to the outer surfaces of the mechanical parts, and clamping and positioning are formed. According to the multi-point and multi-mode clamping and positioning structure, stable clamping force can be applied to the mechanical part from different directions, and the part is effectively prevented from displacing, shaking or rotating in the welding process. For mechanical parts with irregular shapes, especially cones with inclined planes or curved surfaces and the like, the flexible and accurate clamping mode can be better attached to the surfaces of the parts.

The utility model discloses a material conveying mechanism suitable for a laser marking machine, which relates to the technical field of laser marking machines, and is characterized by comprising a bottom plate and a fixed frame fixedly arranged on the top surface of the bottom plate, a cleaning mechanism is arranged on the inner side of the fixed frame, and laser marking mechanisms are arranged on the inner side and the left side of the fixed frame; the laser marking device has the technical effects that the laser marking mechanism is arranged to conduct laser marking on the surface of an object, and before marking, two extrusion plates are controlled to get close to each other, so that the surfaces of two rolling wheels make contact with the front end face and the rear end face of the object, and the object can be conveniently marked. According to the positioning device, the object can be positioned in the center of the conveying belt, marking is more accurate, and when objects in irregular shapes are positioned, the rollers can be attached to the surfaces of the objects all the time through the two springs, the two dampers, the two sliding blocks and the two connecting plates.