980 results about "Waste product" patented technology

The invention relates to the field of group quality management, in particular to a group quality management system and method based on a dynamic data source. Comprising a data source management module, a quality data acquisition module, a quality data storage and management module, a quality data analysis and statistics module, a quality control and decision support module, a user management and authority control module and a system setting and management module which are connected through data interfaces, the data flow, the use frequency and the updating condition are monitored, and an early warning mechanism for data source connection abnormity, data access timeout and data conflict is arranged. According to the method, data integration and sharing can be improved, the accuracy of data quality is improved, user experience is improved, and safety is enhanced. According to the method, quality abnormity and fluctuation can be quickly and accurately found, targeted control measures are taken in time, quality problems are restrained in the bud state, and defective products and waste products are effectively reduced.

The invention relates to the technical field of gear finish machining, in particular to a gear production and manufacturing finish machining treatment system and method.The method comprises the steps that historical machining data of a high-precision transmission gear is acquired through a historical data acquisition module; and a stage surface image after the current processing stage on the first production line is completed is obtained through a real-time data acquisition module. And the stage detection module generates stage real-time detection data according to the stage surface image, and obtains a stage detection result in combination with standard detection data. The classification module classifies the gears according to the detection result, removes waste products and transfers process adjustment products and rework products to a second production line. The processing parameter adjusting module carries out clustering according to the real-time detection data of the process adjustment product and the rework product, and generates processing adjustment parameters and rework adjustment parameters. The second production line control module adjusts the second production line according to the machining adjustment parameter and the reworking adjustment parameter. According to the invention, the production process is optimized, and the quality control and production efficiency of the gear are improved.

The invention discloses a multi-objective parallel waste product disassembly line optimization method based on the number of skills of workers, and relates to a waste product disassembly line optimization method, which comprises the following steps of: constructing a disassembly line balance model according to product information of a product to be disassembled, disassembly line information and disassembly skill information of the workers; constructing a target function by taking the minimum skill number of chemical workers and the maximum net profit of product disassembly as targets; setting constraint conditions of the disassembly line balance optimization model; encoding the disassembly task based on an encoding mechanism of a priority relation matrix, generating a feasible solution, and decoding; obtaining a task allocation scheme of the to-be-disassembled product; in an actual case, the IDBA is compared with five algorithms including NSGA-II, NSGA-III, SPEA-II, ESPEA, MOEA / D and the like. The improved discrete bat algorithm is provided according to the actual case of the disassembly line, the multi-target parallel disassembly line balance problem is optimized, and the task and skill distribution efficiency is remarkably improved.

The invention discloses a technology for manufacturing a thin film by recycling and calendering a polytetrafluoroethylene material, and belongs to the technical field of high polymer material recycling and processing, the technology for manufacturing the thin film by recycling and calendering the polytetrafluoroethylene material comprises the following steps: crushing waste products, and carrying out three-stage screening impurity removal and melt index detection; after being cleaned by supercritical carbon dioxide, the qualified material is mixed with industrial by-product filler, waste tire rubber powder and the like, low-temperature mixing is conducted through a double-screw extruder, and mixing parameters are automatically regulated and controlled through a tension sensor; performing calendaring forming by a five-roller calendaring unit, preheating the first two rollers, performing differential stretching by the middle three rollers, engraving a micro groove by the third roller, and controlling the thickness precision to be + / -3% by an online thickness gauge; the film is slit after being compounded according to requirements, and scrap edges are crushed and recycled. The method realizes efficient recovery of waste polytetrafluoroethylene, and has the advantages of thorough impurity removal, stable performance, environmental protection and energy saving.

The invention discloses a method for stabilizing a two-segmentation rolling line difference through a pre-segmentation hole pattern, belongs to the technical field of steel rolling segmentation rolling, and solves the problem that waste products or steel piling faults are frequently generated due to large line differences after grooves and guides are changed in the existing deformed steel bar production process. The method comprises the following steps that inlet guides and outlet guides of all racks of all finishing mill groups are installed and aligned, the opening degree of the guides is adjusted, the sizes of rolled pieces are matched, and deformed steel bars are rolled into round holes in an intermediate rolling mill after being rolled by a roughing rolling mill group and enter the finishing mill groups along with a production line; and rolling the deformed steel bar in a 13 #-18 # rolling mill of a finishing mill group, segmenting the deformed steel bar through a 16 # rolling mill, shaping the deformed steel bar through a 17 # rolling mill and a 18 # rolling mill, and outputting a finished product. By increasing the fullness of the rolled piece in the finishing mill group, the rolled piece is automatically aligned and centered in the rolling process, line difference control of two-slitting rolling is stabilized, and the problem that the line difference is large in the two-slitting rolling process is obviously solved.

The invention relates to the technical field of computer display screen testing, and particularly discloses a computer display screen testing device and a testing method.The computer display screen testing device comprises a frame, a driving mechanism is fixedly installed on the outer side of the frame, and a testing mechanism has a comprehensive detection function and a convenient waste collecting mechanism; a first electric push rod is started, a transverse plate moves downwards, a stamping block acts on the display screen, a pressure sensor monitors pressure in real time, whether the display screen is qualified or not is judged according to a pressure threshold value and the state of the display screen, and if the display screen is damaged during detection, waste falls into a collecting frame through a guide hopper, and meanwhile, when the stamping block makes contact with the display screen, a telescopic spring makes a friction plate stably make contact with the top of the screen; after the detection is finished, the bridge type handrail is pulled, the collecting frame is easily disassembled through the guide rail sliding block, waste collection is facilitated, and it is guaranteed that the detection is efficiently and orderly carried out.

The invention discloses a cooling device and glass fiber production equipment, and relates to the technical field of glass fiber production, and the cooling device comprises a spray pipe, an air supply pipeline, a control valve and a control system. Wherein the spray pipe is provided with a plurality of air nozzles distributed at intervals along the longitudinal direction, the plurality of air nozzles are used for spraying air flow towards one side deviating from the bushing so as to form an air vortex capable of reducing the temperature of the bushing and the root of the glass fiber on one side deviating from the bushing of the spray pipe, and the air supply pipeline is connected with the spray pipe and is used for supplying the air flow to the spray pipe; the control valve is arranged on the air supply pipeline and used for controlling the flow of airflow in the air supply pipeline, and the control system is in communication connection with the control valve and used for controlling the opening degree of the control valve according to the wire drawing operation state. The cooling device can stabilize the temperature of the bushing plate when the wire drawing operation is interrupted or the machine head is switched, reduces the number of waste products, and meets the cooling requirement of the bushing plate with high hole number for producing small-diameter fibers, so that the productivity and the economic benefit of a wire drawing operation unit are improved.

The utility model provides a waste rejecting device of packaging bag manufacturing equipment and the packaging bag manufacturing equipment, and the waste rejecting device comprises a plurality of industrial cameras arranged on a rack, and a waste collecting part positioned at the downstream of a plurality of sealing stations along the transportation direction of a transportation assembly, each sealing station is correspondingly provided with at least one industrial camera, and a lens of each industrial camera faces the sealing part of the packaging bag located at the corresponding sealing station, so that an image of the packaging bag at the sealing part can be accurately shot; moreover, the waste collecting part comprises a waste discharge containing cavity communicating with the conveying channel of the conveying assembly and a path switching part movably arranged between the conveying channel and the waste discharge containing cavity, the path switching part communicates with the conveying channel and the waste discharge containing cavity in a switchable mode, and therefore the waste discharge containing cavity can be discharged through the path switching part under guiding of the path switching part. And waste products which do not meet the standard are output to the waste discharge containing cavity, and the yield of each batch of packaging bags produced by the packaging bag manufacturing equipment is increased.

The utility model relates to a continuous aluminum-plastic separation pyrolysis system, which comprises a crushing device, a conveying device, a preheating drying device, a hot melting device, a pyrolysis device, a condensing device, a cooling device, a screening device and a storage tank, the preheating and drying device is used for preheating and drying the crushed materials; the hot melting device is used for heating and melting the preheated and dried materials; the pyrolysis device is used for pyrolyzing the heated and molten material into a gaseous substance and a solid substance; the condensing device is used for condensing the gaseous substance to produce pyrolysis oil; the cooling device cools the solid substance; the screening device is used for screening the cooled solid substances with different components; the system can realize continuous aluminum-plastic separation and pyrolysis of aluminum-plastic products, the production efficiency is improved, the labor cost is saved, the whole production process is relatively closed, environment-friendly, safe and reliable, and the system is suitable for industrial and large-scale production.

Methods and systems for mixing dissimilar hydrocarbon feedstock materials to form hydrocarbon feedstock blends for subsequent processing. The dissimilar hydrocarbon feedstock materials can differ by chemical composition, polarity, solubility, and / or physical state and include one or more of biomass-derived materials, non-petroleum-derived oils or fats, polymers, fabrics or textiles, paper or cardboard, rubber, waste products, pyrolysis products of the foregoing, or petroleum-derived materials. Efficient and thorough mixing of the dissimilar hydrocarbon feedstock materials is performed by static inline mixing to form an intermediate blend, which is further mixed by high shear mixing to form the hydrocarbon feedstock blend. The methods and systems may involve other processing equipment e.g., strainers, filters, pumps, furnaces, heat exchangers, reactors, separators, tanks, and / or distillation columns. The hydrocarbon feedstock blend may be further processed by hydrocracking or hydroconversion e.g., by ebullated bed, fixed bed, or slurry bed reactor), solvent deasphalting, coking, fluid catalytic cracking, hydroprocessing, or hydrotreating.

The invention discloses a discrete manufacturing enterprise product cost accounting method, and belongs to the technical field of commercial data processing, and the method comprises the steps: dividing the production process of each part in a product into a plurality of production processes; according to the inflow cost and the material picking cost of one production process, the in-process cost, the waste product cost and the completion cost of the production process are obtained through the processing motivation in the production process, and the inflow cost of the next production process is determined according to the completion cost; through circulation of the completion cost between continuous production processes, the completion cost of each part is obtained, so that the product cost is obtained. According to the method, the part production procedures are divided, cost circulation is carried out, refined cost control is achieved, cost accounting is independently carried out in each procedure, and data are accurate. By reasonably sharing the manufacturing cost and the waste cost, the cost transfer of cross-workshop circulation is simplified, and the cost accounting accuracy is improved.

The utility model relates to the technical field of plastic bottle processing, and discloses a plastic bottle processing scraped product crushing and recycling device which comprises a support, a crushing box is fixedly connected to the middle of the support, a supporting plate is fixedly connected to the left side of the exterior of the crushing box, and a crushing assembly is arranged on the upper portion of the supporting plate. A second motor is arranged on the right side of the exterior of the crushing box, a rotating disc is fixedly connected to the output end of the second motor, a mounting rod is fixedly connected to the right side of the exterior of the rotating disc, one end of a connecting rod is rotationally connected to the exterior of the mounting rod, and the other end of the connecting rod penetrates through the interior of the crushing box and is fixedly connected with a screening plate. According to the utility model, crushed waste particles can be conveniently screened, plastic particles with different sizes are discharged from different discharge ports, the plastic particles with different sizes or types are prevented from being mixed together, and the uniformity and consistency of each batch of raw materials can be ensured, so that the quality of final products is improved.

The invention discloses a furniture production waste collection and treatment device, and relates to the technical field of furniture waste treatment, the furniture production waste collection and treatment device comprises a base, a conveying mechanism is arranged on the top surface of the base, a crushing box is fixedly mounted on the top surface of the base, and a material blocking mechanism, a crushing mechanism and a screening mechanism are arranged in the crushing box; the screening mechanism comprises a screening box, an electromagnetic roller is fixedly installed on the inner surface of the screening box, a limiting block is fixedly installed on the side face of the screening box, a connecting plate is fixedly installed on the side face of the screening box, a transmission shaft is rotationally connected to the interior of the crushing box, and cams are fixedly installed at the two ends of the transmission shaft; a third gear is fixedly mounted at one end of the transmission shaft; according to the equipment, crushed waste can be shaken and screened, in the shaking process, blocked waste in filter holes can fall off due to shaking of the screening box, and therefore the situation that the screening efficiency and effect are reduced due to the fact that large waste blocks the filter holes is avoided.

The present disclosure includes a prefabricated wall panel that is made from materials which are otherwise waste products in the agricultural and forestry industry. Each wall panel includes lateral and longitudinal channels with a step in the sidewalls thereof to accommodate installation of various items. Some of the sidewalls may also include an additional step further recessed into the channel to accommodate other items. Regardless of the number channels and steps therein, the wall panels are also devoid of any shear sharp corner, such that a curved section is provided between each transition to allow for easier manufacturing with composite materials.

The invention discloses an injection mold for multicolor injection molding and a production process thereof, a set of machine vision on-line inspection system with pattern detection and surface flatness detection is integrated, pattern detection is performed on a specific part of a formed part A through optical screen detection, horizontal and vertical coordinates of an actual contour are compared with a preset range, and the pattern of the specific part A is detected. Then, the surface flatness of the part is objectively evaluated by analyzing reflected light distribution on the surface of the part, whether a qualified matrix is provided for second injection or not is judged, and key quality attribute judgment on the intermediate product A before second injection is achieved; according to the method, the waste of raw materials, energy and working hours caused by the fact that known waste products continue to be subjected to second injection is effectively prevented, meanwhile, the position precision and visual definition of final multi-color products at the joints of different colors are guaranteed, the defects of boundary line distortion, blooming and the like are overcome, and the production yield and the resource utilization rate are remarkably increased.

The invention discloses an intelligent paid waste recovery system, which relates to the technical field of waste recovery and comprises an intelligent recovery box main body, a central control module, a user interaction module, a settlement module and a user side applet, the intelligent recycling bin main body comprises a single recycling bin door, an independent identification channel, a sorting execution module and a double-category sorting bin body; the double-category sorting cabin body comprises a paper-plastic cabin body and a fabric cabin body, electric sorting gates are arranged at the tops of the paper-plastic cabin body and the fabric cabin body, and weighing settlement units are arranged at the bottoms of the paper-plastic cabin body and the fabric cabin body; a dangerous goods detection module, a delivery quantity limiting module, an overlapping recognition module, an overlapping goods dispersing module and a self-adaptive illumination category recognition module are sequentially integrated in the independent recognition channel in the goods conveying direction; according to the scheme, identification precision fluctuation can be improved, and a stable and reliable classification effect is formed.

The invention discloses a packaging bag waste discharge system which comprises a waste discharge device and a detection and judgment device which are in communication connection. The waste discharging device comprises a first conveying roller set, a waste discharging unit and a second conveying roller set which are sequentially arranged along the conveying path of the packaging bag, and the waste discharging unit comprises a path switching assembly and a waste collecting assembly. An inlet of the path switching assembly communicates with an outlet of the first conveying roller set, and an outlet of the path switching assembly communicates with an inlet of the waste collecting assembly or an inlet of the second conveying roller set in a switchable mode. The detection and judgment device comprises an information detection unit and an information processing unit, the information processing unit judges whether the packaging bags are waste packaging bags or not according to detection information of the packaging bags, and when the packaging bags calibrated as the waste packaging bags are conveyed to the waste discharging unit along the conveying path, an outlet of the path switching assembly communicates with the waste collecting assembly. The waste discharge system can detect the packaging bags one by one in real time and has the advantages of high efficiency and high automation.

The present document related to the processing of materials, such as ash waste, mining waste, consumer waste, or industrial waste, to separate valuable components. There is provided a process and system for extracting a valuable component, such as rare earth elements (REE) from a feedstock comprising REE-embedded material. The process can comprise subjecting the feedstock to a kinetic pulverization stage wherein the feedstock is subjected to self-collisions created by vortices within the kinetic pulverizer to produce a pulverized material; and subjecting the pulverized material to an extraction stage to produce a valuable component-rich stream and a valuable component-depleted stream. There is also provided processes for separating REEs from fossil fuel ash and municipal solid waste incinerator (MSWI) ash to produce an REE-enriched component, which can be separated into individual REE components, and a REE-depleted material.

The invention discloses automatic sorting equipment, a control method and a control device. The automatic sorting equipment comprises the following steps: identifying material categories of materials to be sorted on a sorting machine; the number of the sorting bins is at least two, and each sorting bin is used for storing only one kind of materials; the first conveying pipe is provided with a plurality of discharging ports, the discharging ports are formed in the feeding ports of the sorting bins in a one-to-one correspondence mode, and automatic flow dividers are installed on the discharging ports respectively. The circulating bin is respectively communicated with the sorting machine and the feeding mechanism; and the control unit is used for opening the flow divider of the sorting bin corresponding to the sorting target material category according to the preset sorting target material category, enabling the flow divider to be in an opening state all the time until the sorting of the stage is finished, and controlling the sorting machine to spray and select target objects belonging to the sorting target material category. In the waste recycling process, automatic sorting of various kinds of materials is achieved, and the working efficiency of sorting operation is improved.

The invention relates to the technical field of injection molding, and discloses a high-precision adjustment dust collector injection molding part body injection molding process which comprises the following steps: before a melt enters a mold cavity, obtaining a feed-forward signal representing the physical performance of the melt through an online melt quality characterization (IMQ) system, and obtaining a feed-forward signal representing the physical performance of the melt based on the feed-forward signal; a dynamic valve needle fine tuning (DVM) system is used for applying rheological state intervention to the melt about to enter the cavity at a pouring gate; and on the basis of the feedforward signal, a local thermal field on the surface of a mold cavity is instantaneously and dynamically regulated and controlled through a dynamic energy field (AZT) active cavity system. By arranging the online melt mass characterization (IMQ) system, a feed-forward signal of performance fluctuation of the melt is obtained before the melt enters a cavity, the problem of continuous waste caused by adjustment lag in a traditional process is fundamentally solved, and high stability and process consistency of a dust collector injection molding part body in the continuous production process are ensured.

The invention belongs to the technical field of injection molding processing control, and relates to an intelligent control system for injection molding processing of a food plastic cup. According to the method, by obtaining the reference process parameters of the target food plastic cup in each processing process, it is ensured that each processing process is carried out according to the optimal parameters, the production efficiency and the product quality are improved, and by analyzing the matching degree of the process parameters of the target food plastic cup in each processing process and comparing the actual process parameters with the reference process parameters, the product quality is improved. The production process of the target food plastic cup is accurately controlled, abnormal conditions in the processing process can be found in time, corrective measures are taken, the consistency and stability of products are guaranteed, and by judging and controlling the technological parameter control requirements of the target food plastic cup in each processing process, abnormal changes in the processing process can be rapidly responded, and the production efficiency of the target food plastic cup is improved. And technological parameters are adjusted in time, the continuity and stability of the production process are ensured, and defective products and waste products can be reduced.

The utility model relates to a cork base injection mold for oblique ejection demolding, and belongs to the technical field of injection molds. Comprising a fixed mold plate, a movable mold plate, a foot plate and a bottom plate, a sliding groove is formed in a pitched roof block, an ejector pin capable of extending out of the outer side wall of the pitched roof block is arranged in the sliding groove, an abutting portion is arranged at the end, close to the inner side of the sliding groove, of the ejector pin, a chute is formed in the movable mold plate and is of a structure with the narrow upper portion and the wide lower portion, and the end of the abutting portion penetrates out of the sliding groove and abuts against the inner wall of the chute. A reset spring is arranged on the outer side of the ejector pin, and the two ends of the reset spring abut against the end of the sliding groove and one side of the abutting part respectively. According to the scheme, the ejector pin in the sliding groove obliquely moves upwards along with the sliding groove, when the ejector pin moves, the end, provided with the abutting part, of the ejector pin abuts against the inner wall of the inclined groove, the ejector pin can be gradually ejected out towards one side of the side cavity, a buckle formed in the side cavity is demolded from the inclined sliding block, the buckle cannot be pulled in the process that the inclined sliding block continues to be ejected out, and therefore the buckle cannot be damaged. And the situation that waste products appear in the production process is avoided.

The utility model relates to the technical field of plastic waste treatment, in particular to a device for separating plastic products from waste. Comprising a crushing box, a crushing assembly and an auxiliary assembly, the auxiliary assembly comprises a screening box, a sealing plate, a mounting frame, a screen, a water tank, a fluted disc frame, a filtering cover, a positioning plate, a waterproof motor, a driving gear, a transverse plate, a magnetic rod and a vibration component, and after plastic is crushed through the crushing assembly and screened through the screen, plastic particles capable of passing through the screen fall into the filtering cover; furthermore, a waterproof motor is controlled to act, a driving gear is driven to rotate, finally, a fluted disc frame rotates, a filtering cover can rotate, after rotation, clean water is sprayed into the filtering cover through a water spraying pipe, then the plastic part can be cleaned, and finally sewage is discharged by opening a discharging valve on a water tank. And therefore, the problem that secondary utilization of the plastic waste is affected due to the fact that silt on the surface of the plastic waste cannot be removed after the plastic waste is crushed and screened by an existing device can be solved.

Internal combustion engines, including engines producing power from solid or slow burning fuel(s), such as biological-based or petroleum-based fuels, wood, corn, biomass, coal, and waste products, and / or possibly other liquid or gaseous fluids, as well as methods for operating or implementing such engines, are disclosed herein. In an example embodiment, the engine includes a crankshaft, a piston, a cylinder having an internal cavity and several ports, and an assembly having a chamber having a first region within which solid fuel can be situated and combusted. The assembly further includes a diverter valve so that, depending upon a setting of the valve and during engine operation, first and second amounts of compressed air respectively proceed to the first region and to bypass the first region, and a combination of combustion products and the second amount proceeds via one of the ports to the part of the internal cavity.

The utility model discloses an anti-deformation bearing thin-wall part machining supporting and fixing structure which comprises a base and a supporting assembly, a machining table is connected to the top of the base, clamping blocks are arranged on the two sides of the top of the machining table, and the supporting assembly is arranged in the machining table and comprises a bevel gear ring and a plurality of bevel gears meshed with the bevel gear ring. A lead screw is arranged in the machining table through a plurality of rotating frames, the surface of the lead screw is in transmission connection with a supporting plate through a lead screw nut, the supporting and fixing structure is provided with a supporting assembly, a driving motor drives a bevel gear ring to rotate, a plurality of bevel gears rotate synchronously, then the lead screw is driven to rotate, and the supporting plate ascends to support the interior of the thin-wall part; by means of the internal supporting mode, pressure and friction force borne by the inner wall of the thin-wall part during polishing can be effectively dispersed, deformation caused by lack of supporting is avoided, the size precision, the shape precision and the surface quality of the bearing thin-wall part are guaranteed, the product percent of pass is increased, and waste products are reduced.

The utility model discloses an automobile seat sliding rail support stamping progressive die, and belongs to the field of stamping dies. The stamping progressive die comprises a fixed die and a movable die arranged on the fixed die; material fixing structures are symmetrically arranged at one end, close to the fixed mold, of the movable mold; the fixing seat is fixedly connected with one end, close to the fixed mold, of the guide rod; the roller rod is rotationally mounted on the fixing seat; the fastening spring is arranged on the guide rod in a sleeving manner and corresponds to a position between the fixing seat and the movable mold; and the baffle plate is fixedly connected to one end, far away from the fixing seat, of the guide rod. The blank is stably positioned through the material fixing structure, displacement of the blank in the stamping process is effectively prevented, and therefore the size precision and the shape consistency of stamped parts are improved. Stamping waste products caused by blank displacement are reduced, and the production cost is reduced. And as the shutdown adjustment time required by waste products is reduced, the overall production efficiency is remarkably improved. The design of the roller rod avoids the problem that the surface of the blank is scratched, and the blank quality is protected.

The invention discloses a meter weight control device and method for a cable crosslinking procedure, and belongs to the technical field of cable manufacturing, the meter weight control device comprises an extruder and a weighing unit, the extruder adopts a three-layer co-extrusion system and comprises a feeding device, a traction device and an extrusion device, and the meter weight control device further comprises a speed detection unit, a calculation unit and a control unit. The speed detection unit can detect the production line traction speed of the extruder, and the calculation unit can receive a speed signal and calculate a real-time meter weight value and an actual glue thickness value; the control unit controls the working parameters of the extruder according to the comparison between the data calculated by the calculation unit and the set data; the weighing unit, the speed detection unit, the calculation unit and the control unit work cooperatively to control the weight per meter of the extruder. According to the invention, the weighing unit is arranged, and the weight of the extruded material entering the extruder is adjusted through the cooperation of the speed detection unit, the calculation unit and the control unit. The situation that the thickness exceeds the standard can be avoided, and trial production and starting waste products are remarkably reduced.

The invention relates to a method for producing a workpiece (10) having a chamfer (20), in which a good part (18) is separated from a scrap skeleton (14) by cutting a blank (16) using at least one laser beam, the good part (18) is cut into a waste part (12) and into the workpiece (10) by means of the laser beam for production of the workpiece (10), whereby the chamfer (20) is formed, wherein, before complete separation from the workpiece (10), the waste part (12) is secured (24) to the workpiece (10) and / or the scrap skeleton (14), in a region that is already separated from the workpiece, by means of at least one welded joint (24).

The utility model relates to the technical field of plywood production, and discloses a plywood surface defect detection device which comprises a plate conveying mechanism, a defect detection mechanism is arranged on the plate conveying mechanism, and a sorting mechanism used for sorting qualified products and unqualified products is arranged at the sending-out end of the plate conveying mechanism. The classification mechanism comprises a front turnover conveyor, a rear turnover conveyor and a double-layer conveyor arranged between the front turnover conveyor and the rear turnover conveyor, the upper layer is an unqualified product conveyor, and the lower layer is a qualified product conveyor; the front turnover conveyor and the rear turnover conveyor can rotate to be connected with the qualified product conveyor and the unqualified product conveyor respectively, a waste product frame is arranged on one side of the unqualified product conveyor, and a material pushing mechanism for pushing waste products out of the unqualified product conveyor is arranged on the other side of the unqualified product conveyor. According to the device, qualified products and unqualified products can be classified conveniently, the unqualified products can be continuously conveyed to the next stage for operation after being confirmed and repaired, and waste products which cannot be repaired are collected on the waste product frame.

The utility model discloses a waste crushing and recycling device for corrosion-resistant thermal insulation pipe production, which relates to the technical field of waste crushing and recycling and comprises a crusher shell, the outer wall of the crusher shell is connected with a driving motor through a mounting bracket, and the output end of the driving motor is connected with a crushing roller for crushing waste. According to the waste crushing machine, the transmission mechanism is arranged, when the driving motor is used for driving the two crushing rollers to crush the waste, the conveying belt can be synchronously driven to convey the waste under the action of the second transmission rod, so that the waste can be crushed, and the crushing efficiency is improved. And in the transmission process of the second transmission rod, a top end movable rod continuously strikes the conveying belt, so that the crushed materials fall down from meshes of the conveying belt, and the materials which are not completely crushed are moved and recycled through the conveying belt, so that secondary crushing is facilitated, manual secondary screening is not needed, and the working efficiency is further improved.