154results about How to "Fit evenly" patented technology

The invention discloses a plate heat exchanger, which belongs to the field of heat exchange, and comprises a plate body I, a plurality of guide columns fixedly connected to one side of the plate body I, a plate body II movably sleeved outside the guide columns, and a heat exchange sheet positioned between the plate body I and the plate body II, the vertical installation assembly comprises a supporting column fixedly connected to one side of the first plate body, a rotating base rotationally connected to the outer portion of the supporting column in a sleeving mode, two lower side plates symmetrically and fixedly connected to the upper end of the rotating base, two upper side plates fixedly connected to the upper ends of the two lower side plates correspondingly, and guide parts fixedly connected to one sides of the two upper side plates and one sides of the two lower side plates. The heat exchange plate can be vertically inserted between the two upper side plates and the two lower side plates, the process of bending installation of the heat exchange plate is avoided, the mechanical stress effect on the heat exchange plate is remarkably reduced, damage such as deformation, scratches and creases possibly caused in the installation process is reduced, the structural integrity of the heat exchange plate is improved, and the service life of the heat exchange plate is prolonged.

The invention discloses a spraying device for grassland ecological soil remediation in the technical field of ecological remediation. The spraying device comprises a vehicle body, a storage assembly is installed at the top end of the vehicle body, a lifting cavity is formed in the vehicle body, a lifting assembly is arranged in the lifting cavity, a supporting plate is fixedly connected to the bottom of the lifting assembly, and a plurality of spraying assemblies are linearly arrayed at the bottom of the supporting plate; a pump assembly is arranged in the vehicle body; the spraying assembly and the storage assembly are both communicated with the pump assembly; and each spraying assembly comprises a rotating hole column fixedly connected to the bottom of the supporting plate, a spraying ring is annularly arranged on the surface of each rotating hole column, a plurality of spraying openings communicating with the storage assembly are formed in the bottom of each spraying ring, and a plurality of injection assemblies are arranged in each rotating hole column. Through cooperative assistance of the lifting assembly, the spraying assembly and the injection assembly, when the grassland surface soil is hard, spraying remediation can be conducted on the grassland soil surface, meanwhile, injection of liquid medicine can be completed by going deep into the grassland soil, and the ecological remediation effect of the grassland soil is improved.

The invention relates to the related technical field of metal welding, in particular to auxiliary butt joint equipment for pipeline welding, which comprises a base, a bearing frame, a folding module, an adjusting module, a middle bearing module, a sensing module, a welding module and a running-in module. The extrusion force between the pipelines is detected in a switching mode, flexible regulation and control are conducted according to the pressure detection result, the butt joint pressure of the pipelines is made to be in a proper range, gaps can be reduced through the proper extrusion force, the welding quality is improved, meanwhile, air holes generated in the welding process are reduced through extrusion, a better molten pool shape can be formed, and the welding quality is improved. In addition, in order to ensure uniform butt joint between the pipelines, the running-in modules are used for carrying out rotary butt joint between the pipelines, uniform attachment between planes of the pipelines is ensured, the relative positions between the pipelines can be adjusted more accurately by rotating the pipelines, non-uniform gaps on the butt joint faces can be eliminated easily, and the welding quality of the pipelines is improved. Therefore, the butt joint is tighter.

The invention relates to the technical field of pressure detection, in particular to a bone fascia chamber pressure detector based on multi-dimensional detection and a measuring method.The bone fascia chamber pressure detector comprises a lifting plate and transverse guide rails fixed to the lifting plate and symmetrically arranged, and a supporting plate and a sliding plate are slidably installed in the transverse guide rails; the distance adjusting and controlling assembly is arranged on the supporting plate, and a bearing plate is connected to the distance adjusting and controlling assembly; the pressurizing rotating mechanism is arranged on the bearing plate, a first electrode plate is connected to the pressurizing rotating mechanism, and a follow-up attaching mechanism is further arranged on the bearing plate; the bearing assembly is arranged on the lifting plate, a bracket and a fixing plate are connected to the bearing assembly, a fixing sleeve is fixed to the fixing plate, a rotating ring is fixed to the end of the fixing sleeve, and an arc-shaped groove is formed in the rotating ring; the follow-up turnover mechanism is arranged on the fixing plate and connected with the bearing assembly, the electrode plate can be controlled to be attached to a patient at a certain pressure through the pressurizing rotating mechanism and the follow-up attaching mechanism, and it is ensured that the detection result is accurate.

The invention relates to the technical field of cable production, in particular to an insulation protection layer wrapping machine for cable production, which comprises a support arranged on one side of the bottom of a wrapping machine body, a cleaning mechanism used for cleaning dust in gaps of multiple strands of wire cores is arranged on the support, and the cleaning mechanism comprises a first supporting plate and a second supporting plate which are fixed at the two ends of the top of the support. The second supporting plate is located at the end, close to the wrapping machine body, of the support, the annular frame is arranged between the first supporting plate and the second supporting plate, three cleaning brush sets distributed in a circumferential array mode are arranged on the inner side of the annular frame, and each cleaning brush set comprises two cleaning roller brushes arranged at intervals. According to the invention, the dust in the gaps of the multiple strands of wire cores can be thoroughly cleaned, the situation that the dust in the gaps of the multiple strands of wire cores is wrapped to cause salient points on the insulation protection layer is avoided, the insulation performance and the protection effect of the wrapped cable are not influenced, the wrapping quality of the cable is improved, and the service life of the cable is prolonged.

The invention discloses a sidewalk floor tile laying device and method for road construction, relates to the technical field of road laying, and aims to solve the problem that when an existing sidewalk floor tile laying device is used, gaps between laid floor tiles are too large. A brick storage bin is arranged in the operation bin, a brick discharging plate is fixedly connected to the outer wall of the operation bin, a brick discharging channel is formed in the brick discharging plate, the end, close to the operation bin, of the brick discharging plate gradually inclines downwards from the end, close to the operation bin, of the brick discharging plate to the other end of the operation bin, and an electric conveying belt is arranged in the brick discharging channel. A plurality of evenly-arranged partition plates are arranged on the outer wall of the electric conveying belt, the lower side of the end, away from the operation bin, of the lower brick plate extends to form an inclined guide part, and the upper side of the end, away from the operation bin, of the lower brick plate extends to form a semicircular storage bin. The floor tile laying device has the advantages of small gaps after floor tile laying and good laying effect.

The utility model discloses a ferrite base material surface film covering device which comprises a workbench, one end of the workbench is fixedly connected with a clamping assembly, one side of the workbench is fixedly connected with a movable frame, a sliding groove is formed in the top of the movable frame, a movable motor is arranged at one end of the top of the movable frame, and one side of the movable motor is fixedly connected with a rotating screw rod. And the rotating screw rod is rotationally mounted in the sliding groove, and a film covering device is slidably mounted on the outer surface of the sliding groove. According to the scheme, the ferrite base material is coated with the film roll, the film roll is attached to the surface of the ferrite base material through pressing of the pressing block, and then ferrite and the film roll are attached more evenly, so that bubbles are reduced, the film coating effect of the ferrite base material is improved, the dust collection nozzle is used for removing dust on the to-be-coated part of the ferrite base material, and the film coating efficiency is improved. Bubbles caused by dust on the surface of the ferrite base material are avoided, and damage to the surface of the ferrite base material due to the fact that the pressing block presses the dust is also avoided.

The invention belongs to waste gas treatment equipment, and particularly relates to an automatic volatile organic waste gas treatment device which comprises a cyclone dust collector and a UV lamp tube, an inner wall scraping assembly is arranged in the cyclone dust collector, a rotary filtering assembly is connected to one side of the cyclone dust collector through a pipeline, and an arc-shaped plate rotating assembly is arranged in the rotary filtering assembly. An air inlet bin is arranged on one side of the rotary filtering assembly, a filtering plate replacing mechanism and a filtering plate replacing bin are arranged on one side of the rotary filtering assembly, a multi-stage filtering barrel is connected to the other side of the rotary filtering assembly through a pipeline, an exhaust pipe is arranged at the lower end of the outer side of the multi-stage filtering barrel, and a discharging mechanism is correspondingly arranged at the lower end of the activated carbon conveying assembly. The filter plate replacement mechanism is arranged to automatically replace the filter plate, the filter plate replacement mechanism is matched with the filter plate replacement bin for automatic installation, meanwhile, multiple times of treatment are conducted through the filter cartridges, activated carbon and the UV lamp tubes in the multi-stage filter barrel, and the gas treatment effect is improved.

The invention relates to the technical field of electronic component processing, in particular to an electronic component mounting system which comprises a fixing frame, and a conveying belt is arranged above the fixing frame. The mounting mechanism is used for sequentially mounting a plurality of workpieces to be processed, the mounting mechanism is arranged on one side of the conveying belt, the mounting mechanism comprises a fixing plate fixedly mounted on one side of the conveying belt, a vertical plate is fixedly mounted on one side of the fixing plate, and a laminating assembly is arranged on the other side of the vertical plate; and a feeding and discharging assembly is arranged on the side, away from the vertical plate, of the fixing plate, and the feeding and discharging assembly is used for conducting synchronous feeding and discharging on the machined part and the machined part. Compared with the prior art, by arranging the feeding and discharging assembly, the automation degree and the working efficiency of the system are improved, the position precision of the machined part in the whole process is also ensured through precise control over feeding and discharging, and the surface mounting quality is effectively improved.

The invention discloses a semi-automatic cable thermal shrinkage sealing device which comprises a cable screw combined clamping mechanism, a gear driving mechanism, a heating pipe, a roller and two sets of sliding groove combined mechanisms, and the cable screw combined clamping mechanism comprises a right-hand thread screw rod, a left-hand thread screw rod, an upper clamping block, a lower clamping block and a threaded sleeve. The right-hand thread screw rod and the left-hand thread screw rod respectively adjust clamping blocks at two ends through plum nuts to clamp a cable; the gear driving mechanism comprises a motor, a driving gear, a gear disc and a bearing, the motor drives the driving gear to move on the gear disc through a transmission shaft, and the bearing drives the internal cable sleeve disc column to rotate; the sliding groove combination mechanism comprises two sets of sliding grooves and sliding blocks, the sliding blocks are adjusted in the sliding grooves in a sliding mode, the roller is connected with the sliding blocks through the roller base and the support plate, and the heating pipe is connected with the other sliding block through the heating pipe connecting base. The cable end thermal shrinkage quick-sealing operation efficiency can be remarkably improved, and the cable end thermal shrinkage quick-sealing device is safe, reliable and high in applicability.

This utility model discloses a conical drum device for a horizontal decanter centrifuge, relating to the field of horizontal decanter centrifuge technology. It includes a straight drum body and a conical drum body, with a positioning component between them. The positioning component includes an inner positioning groove fixedly formed on the inner wall of the end of the straight drum body, and an outer positioning groove fixedly formed on the outer ring of the end of the conical drum body. The outer and inner positioning grooves are interlocked. This utility model, through the installation of the positioning component, pre-positions the welding area between the straight and conical drum bodies before welding, thereby ensuring the welding quality. This solves the problem in existing horizontal decanter centrifuges where the conical and straight drum bodies cannot be pre-positioned before welding, leading to easy misalignment during welding and affecting the welding quality.

The invention provides an intracavity implant, a suturing method and a blood vessel plug system. The intracavity implant comprises a supporting framework and an inner membrane, the supporting framework is of a tubular structure with an inner cavity, the inner membrane is fixed to the inner cavity of the supporting framework, and the inner membrane is of a tubular structure with an inner cavity; the supporting framework comprises a plurality of supporting sections and connecting sections which are sequentially arranged in a crossed mode in the axial direction, and the outer surface of the supporting framework is in a concave-convex wave shape in the axial direction. The cross section sizes of the near-end supporting part and the far-end supporting part are smaller than those of the other supporting sections; the intracavitary implant provided by the invention can be expanded and formed at one time, and compared with a spring coil embolism technology, the artificial cavity can be blocked by using less materials, so that the cost is relatively low; and in addition, the forming mode is low in requirement for an operator, operation is more convenient and faster, and efficiency is higher.

The utility model discloses a regenerated wrought aluminum alloy door and window, which comprises a door and window mechanism, a reinforcing mechanism and a sealing mechanism, and the door and window mechanism comprises a frame, glass arranged in the frame and the reinforcing mechanism, the reinforcing mechanism comprises a plurality of sealing plates clamped to the side edges of the frame, a plurality of memory alloy pieces attached to the inner side walls of the sealing plates and a plurality of abutting plates attached to the outer edge of the glass, and the abutting plates are attached to the inner sides of the memory alloy pieces correspondingly. According to the utility model, under high temperature weather, the memory alloy sheet increases the volume, and then when the abutting plate is extruded, the insertion rod is led to move and is inserted into the insertion hole, so that the insertion rod opens the rubber pad and the rubber pad is uniformly attached to the surface of the glass, and the dynamic compensation can timely sew and repair a gap, improve air-tight seal and water tightness and ensure the sealing effect.

The invention provides an N-type TOPCon battery coating device capable of improving coating uniformity, and relates to the technical field of TOPCon battery manufacturing, the N-type TOPCon battery coating device comprises a coating reinforcing table, a supporting table is vertically welded to the left side of the upper surface of the coating reinforcing table, a spiral push cylinder is connected to the upper portion of the supporting table through a bolt, a push rod of the spiral push cylinder is perpendicular to the upper surface of the coating reinforcing table, and the upper surface of the coating reinforcing table is provided with a through hole; the heating wire is electrified to heat the film on the outer surface of the battery, so that the film body is in a high-temperature and high-pressure state, tiny wrinkles on the surface of the film body are flattened in the laminating process in the high-pressure state, the film body is softened in the high-pressure state, the film body is more easily attached to the outer surface of the battery piece, and the probability of generating bubbles in the film coating process is reduced; the problems that in the traditional TOPCon battery coating process, after a POE film is coated on the surface of a battery, a film body lacks an external auxiliary positioning structure, the firmness of the film body on the TOPCon battery cannot be further enhanced, and the coating uniformity and the service life of the TOPCon battery are affected due to the fact that wrinkles exist in the film body after coating are solved.

The invention provides an evaporation device which comprises a substrate to be evaporated, a mask, a plurality of magnetic adsorption units and a magnetic isolation structure, the magnetic adsorption units are arranged on the side, away from the mask, of the substrate to be evaporated at intervals, and the magnetic adsorption units are used for adsorbing the mask to the substrate; the magnetic isolation structure and the magnetic adsorption units are located on the same side of the to-be-evaporated substrate and used for isolating any two adjacent magnetic adsorption units. According to the evaporation device, any two adjacent magnetic adsorption units are isolated through the magnetic isolation structures, so that mutual interference of magnetic fields between the magnetic adsorption units is avoided, the distribution uniformity of the magnetic fields is improved, the magnetic adsorption force of the magnetic adsorption units on each area of the mask is more uniform, and the evaporation efficiency is improved. Therefore, in the process that the mask plate is used for carrying out evaporation on the to-be-evaporated substrate, the mask plate is attached to the to-be-evaporated substrate more uniformly and tightly, the phenomenon that the mask plate is wrinkled is reduced, poor evaporation such as color mixing is reduced, and the evaporation effect is improved.

This invention relates to a composite vibration-assisted flexible conformal polishing device for complex curved optical elements, comprising a gantry with a worktable positioned below it; a vertical vibration mechanism is positioned on the gantry facing the working bearing area to provide vertical vibration force; a flexible conformal polishing disk conformally and uniformly fits the optical element to its lower end; the optical element is located on a horizontal sliding vibration mechanism in the working bearing area, achieving short-distance reciprocating sliding vibration in the lateral direction; the short-distance reciprocating sliding vibration in the lateral direction and the vertical vibration combine to form a composite vibration. The vibration of the flexible conformal polishing disk in both the vertical and horizontal directions improves the material removal efficiency of the optical element and enhances the fit characteristics of the flexible conformal polishing disk to the complex curved optical element, thereby improving the smoothness of small-scale ripples. It can be used for rapid removal of defects remaining from previous processing during rough polishing, and can also be used to remove small-scale ripples after sub-aperture polishing.

The utility model relates to a comfortable office chair and belongs to the technical field of office chairs. A comfortable office chair comprises chair legs with a base and a plurality of forked parts, a gas spring supporting column arranged based on the base, a swivel chair tray arranged based on the gas spring supporting column, a chair seat and a backrest, and further comprises a back-through bearing body arranged based on the swivel chair tray, the through-back bearing body comprises a bearing body provided with a chair seat bearing part and a backrest bearing part, and a chair seat supporting body arranged based on the bearing body; and the chair seat is arranged on the basis of the chair seat supporting body. According to the utility model, the comprehensive performance of high stability, high fitting degree and long service life is realized through structural innovation, the seat cushion is suitable for sedentariness scenes such as offices and meetings, and the user experience is remarkably improved.

The utility model relates to the technical field of battery modules, and provides a battery module cover plate which comprises a cover plate body, a groove and a first air bag are arranged on the inner side of the cover plate body, and the groove is communicated with the first air bag through an inflation channel; a control seat capable of axially moving is arranged in the groove, the control seat is in sealing fit with the inner wall of the groove, and the moving stroke of the control seat is configured to drive the first air bag to expand by compressing air in the groove. Through collaborative design of the control seat and the first air bag, active inflation sealing is realized, and when the battery module shell is assembled, mechanical force of shell assembly is converted into air pressure energy in the air bag, so that the second sealing element is more tightly and uniformly attached to a sealing surface, and the battery module shell is particularly suitable for scenes with complex curved surfaces or uneven sealing surfaces; and the initial sealing reliability is obviously improved.

The utility model discloses a carding device for cotton polyester yarn production, and relates to the technical field of cotton polyester yarn carding, the carding device comprises a bottom plate, a first cotton plate and a second cotton plate, the top of the bottom plate is fixedly provided with a U-shaped frame, the top of the bottom plate is fixedly provided with two mounting plates, the outer wall of each sleeve is provided with a plurality of reels, and the reels are connected with the first cotton plate and the second cotton plate. The first cotton plate is arranged below the multiple winding wheels, the second cotton plate is arranged above the multiple winding wheels, and multiple oil spraying pipes are arranged above the second cotton plate. Through the arrangement of the first cotton plate, the second cotton plate and the multiple reels, the multiple cotton polyester yarn rollers are arranged outside the multiple reels in a sleeving mode, the first cotton plate and the second cotton plate are attached to the outer walls of the multiple cotton polyester yarns, the motor and the oil feeding mechanism are started, and therefore the multiple cotton polyester yarns can be oiled; static electricity is prevented from being generated in the cotton carding process of the cotton polyester yarn, the cotton carding smooth effect is improved, and the carding efficiency of the multiple pieces of cotton polyester yarn is also improved.

The utility model discloses a solid waste treatment pulverizer convenient to handle stockpiling fault, including shell, shell 1, shell 2, rotating shaft 1 and roller, shell 1 is provided shell 1 in the middle of shell upper end, shell 2 is provided shell 1 one side, shell 1 and shell 2 middle are both provided with rotating shaft 1, and shell 2 one side is provided with rotating shaft 1. A roller is arranged on the outer surface of the first rotating shaft, a limiting block is arranged on the inner wall of the shell, and the limiting block is located on one side of the second rolling wheel. According to the solid waste treatment pulverizer convenient to deal with the stockpiling fault, when the pulverizer is clamped and stopped, due to the fact that electric energy cannot be converted into mechanical energy, a third motor and a circuit are overheated, equipment is damaged due to too long time, the working temperature of the third motor is monitored in real time through a temperature control switch, and when the third motor is clamped and stopped, the temperature is too high, and a large amount of heat is released; and the temperature control switch stops the work of the motor III and sends an electric signal to the starting separation mechanism, so that the motor is prevented from being damaged due to overheating.

The utility model discloses a biscuit sandwich injection machine, it includes: injection station, the right lower side of injection station is equipped with the operation groove, the bottom of operation groove is slidably connected with the conveyer belt in the front -back direction, the conveyer belt is equidistant and is placed with a plurality of monolithic, the top right side of injection station is embedded and is assembled with automatic injection core machine, the bottom center of automatic injection core machine is fixed with the injection core mouth of intercommunication, the bottom output end of injection core mouth is fixed with the injection core pipe of intercommunication, the bottom of injection core pipe is downward and is penetrated injection station and is vertically erected in the lower layer of operation groove, the outside of injection core pipe is slidably connected with the slip ring, the bottom fixed connection of slip ring has the isolation ring cover, the sandwich material on monolithic is carried out the circular platformization shaping, keeps the uniform stable of adhering form, ensures its in the subsequent monolithic superposition and is opposite to the sandwich material process even diffusion to the outside, thereby even pasting monolithic surface, avoids the problem that one -sided sandwich material is too much and appears to extrude to the outside.

The utility model provides a kind of pull tab connecting piece and thermal superimposed wall, including the pull tab joint and single-head pull tab of being connectable, the pull tab joint is rectangular sheet, the pull tab joint is set with through-hole in one end away from the single-head pull tab, the pull tab joint is set with strip slot in another end close to the single-head pull tab, the end of single-head pull tab close to the pull tab joint is formed with protrusion, the protrusion can be connected with the strip slot clearance hook, the end of single-head pull tab away from the pull tab joint is set with mounting hole.The utility model can realize the production of low thermal conductivity and low cost material, avoid the risk of forming thermal bridge, improve the thermal performance of thermal superimposed wall.

The application discloses a kind of food-grade silica gel triple-sealed high-precision bearings, it is related to bearing technical field, including bearing inner ring, bearing outer ring and the sealing ring of being installed in the inner side of bearing outer ring, the outer raceway both sides of bearing inner ring are equipped with one straight angle sealing groove with the cross section of 90 ° at two ends of shoulder or baffle respectively;The sealing ring includes metal framework and food-grade silica gel rubber coating integrally formed on the metal framework;The food-grade silica gel rubber coating extends towards the inner side of bearing inner ring and forms integrated three sealing lips, including two radial sealing lips with the contact of two radial side walls of the straight angle sealing groove, and one axial sealing lip with the contact of the axial bottom surface of the straight angle sealing groove.The application has the beneficial effects of material safety, no pollution, excellent sealing performance, high processing efficiency, the processing cycle is shortened by more than 40%, the leakage rate is reduced by more than 95%, and has wide application value.

The invention discloses an oversized raw material discharging device and die cutting production equipment applying the oversized raw material discharging device, the die cutting production equipment comprises the oversized raw material discharging device, the die cutting equipment and a material collecting roller set which are arranged in sequence, a material roller and a guide roller are rotationally installed in a rack of the oversized raw material discharging device, a press-fit die is installed in the die cutting equipment, and the material collecting roller set is connected with the oversized raw material discharging device. The press-fit die comprises a press-fit plate and a bearing plate, and the press-fit plate and the bearing plate are installed in a working area of the die cutting equipment in an up-down alignment mode. According to the die-cutting production equipment, oversized materials are restrained through the customized storage table, the positions of the materials are accurately positioned, a stable die-cutting foundation is provided for subsequent procedures, smooth fitting of the materials can be guaranteed through the pressing die and the positioning opposite-fitting structure, meanwhile, the oversized materials are free of wrinkles, bubbles and other defects after fitting, and smooth production is guaranteed.

The invention discloses a rat tail suspension device. The rat tail suspension device comprises a rollable section and an anti-climbing section, the rollable section comprises a fixed part and a movable part which are detachably arranged; a through hole is formed in the anti-climbing section; when an experimental mouse is fixed on the mouse tail suspension device, the fixed part and the movable part are arranged in an attached mode, the tail of the experimental mouse extends into a gap formed after the fixed part and the movable part are attached through the through hole, and the fixed part and the movable part are of a curled structure. The free end of the anti-climbing section is located below the lowest point of the rollable section, and the vertical distance between the free end of the anti-climbing section and the lowest point of the rollable section is 1-3 cm. The suspension device is simple in structure, reasonable in design, convenient to operate, firm in fixation in the use process, small in damage to mice, and higher in reliability and accuracy of experimental results.

The utility model provides a windscreen wiper and a vehicle, and the windscreen wiper comprises a windscreen wiper main body which is connected with at least one fixing piece; the adapter is arranged on the windscreen wiper body and is separated from the fixing piece in the extending direction of the windscreen wiper body, and the adapter is used for being connected with the driving arm; the connecting piece is respectively connected with the fixing piece and the adapter, and the connecting piece can apply a force towards the scraped and brushed surface to the fixing piece. According to the windscreen wiper, the attaching force borne by all parts of the windscreen wiper body can be improved, the whole windscreen wiper can be tightly attached to the wiped face, stress borne by all parts of the windscreen wiper body is more uniform, the windscreen wiper can provide a larger wiping area and a more stable wiping state, the wiping efficiency is improved, and the wiping effect is improved. And the problems of shaking or scraping noise and the like caused by non-uniform stress of the windscreen wiper are avoided.

This invention belongs to the field of laser cutting technology for automotive lamp covers, specifically a laser cutting and trimming device for the outer periphery of an automotive lamp cover, including a laser trimming machine base; a first guide rail frame is fixedly connected to the laser trimming machine base; an electric slide is slidably connected to the first guide rail frame; the lamp cover is fixed by four limiting pressure plates pressing down synchronously. When the laser cutting head cuts the flash and sprue material along the outer periphery, if it is about to reach a certain locking point, the corresponding connecting component will first release the locking of the pressure plate at that point, and then the second electric slider will drive the central slide plate and pressure plate away, while the other pressure plates remain locked. After cutting the position, the locking is reset, and all locking positions are completed in sequence. This multi-point pressing and single-point clearance fixing method replaces the situation where the traditional locking structure blocks the cutting path, improving the cutting integrity and processing quality. At the same time, the connecting component can slide on the central slide plate, so that the limiting pressure plates can adapt to different lamp cover shapes, replacing the traditional single-specification locking structure.

A scroll compressor includes a motor, a compression mechanism, a drive shaft and a bushing. The compression mechanism includes a fixed scroll and an orbiting scroll. The drive shaft has an eccentric journal. The bushing is designed to be movable relative to the eccentric journal to enable the orbiting scroll to have a variable eccentricity, wherein one axial section of the bushing is arranged between the orbiting scroll and the eccentric journal to enable the drive shaft to transmit power to the orbiting scroll via the one axial section of the bushing, and another axial section of the bushing is designed to limit the range of movement of the bushing relative to the eccentric journal to further define the range of variation of the variable eccentricity of the orbiting scroll. The bushing with the above configuration cooperates with the corresponding structure to reliably and effectively limit the range of movement thereof to enable the orbiting scroll to have a proper variable eccentricity, which reduces the requirement for assembly accuracy of the scroll compressor and thereby reduces the cost of the compressor.

This utility model relates to the field of door lock manufacturing technology, specifically a surface treatment device for metal door locks, including a worktable, a drive cylinder, a polishing wheel, a movable plate, a drive mechanism, and a transmission mechanism. A support frame is fixedly connected to the top of the worktable, and a mounting box is fixedly connected to the top of the support frame. Limiting components are provided on the worktable. The drive cylinder is located inside the support frame, with one end passing through the support frame and the mounting box and extending into the mounting box. The polishing wheel is located inside the support frame and is detachably connected to the drive cylinder. The movable plate is located inside the mounting box. The drive mechanism is located on the mounting box, with one end connected to the mounting box. The transmission mechanism is located inside the mounting box. This utility model, through the linkage of the drive mechanism and the transmission mechanism, can drive the polishing wheel to automatically rise and fall, ensuring that the polishing wheel and the target surface of the door lock can form a stable and uniform fit, solving the problem of unstable contact effect of a fixed-height polishing disc.