50results about How to "Prevent breakage etc." patented technology

The invention relates to the technical field of a power generator, a motor and other electromechanical device adopting a silicon steel sheet, in particular to a motor stator-rotor silicon steel sheet linkage punch production line, which comprises a rack for installing a silicon steel sheet strip, and a material arranging machine, a first feeding device, a first punch device, a second feeding device and a second punch device, which are sequentially connected with one another, wherein the first punch device is a rotor silicon steel sheet punch, the second punch device is a stator silicon steel sheet punch, a strip buffering device is also arranged between the first punch device and the second punch device, the strip buffering device comprises a rectangular trough which is arranged below the ground surface and a strip supporting bracket which is arranged on one side wall of the trough, and the strip supporting bracket can be driven by an air cylinder structure to vertical overturn to a horizontal status or a vertical status. The motor stator-rotor silicon steel sheet linkage punch production line can overcome the defects of the existing single punch device for punching the silicon steel sheet that the efficiency is low, the manpower operation intensity is high, the intelligence is low, the cost is high and the like.

The invention discloses a multi-degree-of-freedom mechanical hand for transferring a flexible film. The mechanical hand comprises a pickup unit, an alpha rotating module, a gamma rotating module, an XYZ triaxial translation module, an air path distribution unit and a visual positioning unit, wherein the pickup unit has a beta rotating degree of freedom for rotation around the Y axis, and can be used for axially and circumferentially regulating a suction area; the alpha and gamma rotating modules and the XYZ triaxial translation module are used for achieving the alpha and gamma rotating degrees of freedom for the rotation of the mechanical hand around the X axis and the Z axis and a degree of freedom for translation in three directions X, Y and Z; the air path distribution unit is used for executing the switching control and the vacuum degree detection of each vacuum air path in the pickup unit; the visual positioning unit is used for the position and angle detection of the flexible film in an XY plane and the position detection of the flexible film in the Z axis. According to the mechanical hand, the space attitude, the transfer force and the suction interval of the mechanical hand can be automatically regulated to highly accurately suck and transfer the flexible film according to the characteristics, the size and the position of the flexible film.

A holder (1) has a taper-shaped fitting section (4B) formed in a mounting hole (4), and a front end surface (2B) is set perpendicular to a centerline (O). A cutting head (10) has a taper-shaped mounting section (12) protruding from a rear end surface (11C) perpendicular to the centerline (O) of a cutting blade section (11). The cutting head (10) and the holder (1) are mounted to each other in such a manner that female and male threaded sections (3E, 13) are engaged with each other to thereby fit the mounting section (12) and the fitting section (4B) to each other and to thereby make the front end surface (2B) and the rear end surface (11C) in contact with each other. The inner / outer diameter ratio (d / D1) before the fitting, the inner / outer diameter ratio (d / D1) being the ratio between the inner diameter (d) of the fitting section (4B) and the outer diameter (D1) of the front end of the holder (1), is set to be in the range from 0.5 to 0.8, and the outer diameter expansion ratio ((D2 - D1) / D1 100 (%)) of the difference (D2-D1) between the outer diameter (D2) of the front end of the holder (1) after the fitting and the outer diameter (D1) to the outer diameter (D1) is set to be in the range from 0.022*d / D1-0.003 (%) to 0.33*d / D1-0.06 (%).

The invention relates to a device with an interface protective cover, which comprises the interface protective cover, a connecting piece and a main body, wherein the connecting piece comprises a connecting part, a sliding part and a guide groove; one side wall of the main body is provided with an opening; a guide post and a limited post are arranged on the bottom, which is opposite to the opening, of the main body; the sliding part of the connecting piece passes through the opening and enables the guide post and the limited post to be positioned in the guide groove; the limited post is positioned on the extended line of the connecting line of the guide post and the opening; the top of the limited post is an inclined plane; when the interface protective cover is opened in a wrong direction, the limited post props against the guide groove to prevent the occurrence of wrong opening; and when the interface protective cover is opened correctly, the guide groove slides on the limited post along the inclined plane of the limited post until the guide post props against the limit groove, so that the interface protective cover is opened normally. In the invention, the limited post is additionally arranged in the device with the interface protective cover, thereby effectively preventing the interface protective cover from being opened in wrong direction so as to cause the breakage of theconnecting piece and the like.

The invention provides a solder joint stress reduction structure for reducing stress borne by a solder joint between a printed circuit board and a device welded on the printed circuit board. The solder joint stress reduction structure comprises an open slot. The open slot is formed on the printed circuit board and close to the device. The open slot can be positioned at a position close to an outer side of a corner of the device on the printed circuit board, or can be positioned at a position below the device on the printed circuit board. By arranging the solder joint stress reduction structure on the printed circuit board and close to the device, the stress borne by the solder joint between the device and the printed circuit board can be released or dispersed through the solder joint stress reduction structure, so that the stress borne by the solder joint is reduced; therefore, the phenomena that the solder joint is broken and the like are prevented. Moreover, the invention also provides the printed circuit board comprising the solder joint stress reduction structure.

The invention discloses a landing gear of an unmanned aircraft. The landing gear comprises a first supporting column, a second supporting column, a third supporting column, a first buffering device, a first supporting device, a second buffering device, a second supporting device and a third buffering device, wherein a first rectangular groove, a rolling wheel and a first bracket are formed / arranged in / on the first supporting column; a first groove, a second groove, a first spring, a first movable block and a rectangular block are formed / arranged in / on the second supporting column; a first positioning rod and a second spring are arranged on the third supporting column; the first buffering device comprises a first fixed rod, a first rotary rod, a second rotary rod, a first fixed block, a third spring and a positioning part; the first supporting device comprises a second bracket, a first supporting rod, a first transverse rod and a third bracket; the second buffering device comprises a first horizontal plate, a second positioning rod, a second horizontal plate, a clamping part and an elastic part. Through the adoption of the landing gear disclosed by the invention, the unmanned aircraft can be well and firmly supported; besides, the landing gear has good buffering performance, so that the unmanned aircraft can be prevented from being damaged.

The invention discloses a mechanical hand control system for flexible film transferring. The mechanical hand control system for flexible film transferring comprises a multi-degree-of-freedom mechanical hand, a multi-sensor feedback unit and a control unit, wherein the multi-degree-of-freedom mechanical hand is used for transferring a flexible film, the multi-sensor feedback unit comprises a CCD sensor, a laser displacement sensor, a gravity sensor set, a vacuum sensor, a pressure sensor and the like and is used for detecting the multiple state indexes, including the position, the posture, the vacuum degree and the contact force, of the mechanical hand, and the control unit is used for accurately controlling operation in the whole transferring process conducted by the mechanical hand based on the information of the multi-sensor feedback unit and adjusting the sucking area of a working section of a pickup head flexibly. By the adoption of the mechanical hand control system for flexible film transferring, the posture of the pickup head can be adjusted automatically according to the dimension and position of the flexible film, the flexible film can be picked up and placed down accurately in a sucked mode, and good contact and transferring of flexible films can be guaranteed.

The invention discloses a crushing system for a cement pavement resonance crusher. The crushing system comprises a shock excitation system, a counter-force device and a supporting frame. The shock excitation system comprises a shock exciter, a crushing hammer, a driving system and at least one nitrogen explosion device, wherein the nitrogen explosion devices are arranged above the shock exciter, and plungers of the nitrogen explosion devices are fixedly connected with a shock excitation box of the shock exciter. The shock excitation system is arranged in the supporting frame, and the nitrogen explosion devices of the shock excitation system are fixedly connected with the supporting frame. The upper end of the crushing hammer is fixedly connected with the bottom of the shock excitation box, and the lower end of the crushing hammer penetrates through the bottom of the supporting frame. The driving system is used for providing power for the shock exciter. The counter-force device is arranged above the supporting frame. The supporting frame is fixedly connected to a rack of the resonance crusher. Exciting force of the shock exciter directly acts on a cement pavement, energy loss in the exciting force transmission process is greatly lowered, the energy utilization rate is increased, the crushing capacity is enhanced, and the structure is more compact.

The invention discloses a straw fish shelter and a preparing method thereof. The fish shelter comprises a frame and straw arranged on the frame. The frame comprises a cuboid or cubic frame body. The frame body is composed of a plurality of beams and stand columns perpendicularly connected with one another. The straw is rolled on the stand columns. Each stand column is provided with multiple bundles of straw sequentially arrayed in the length direction of the stand column. One end of each bundle of straw is bound to the corresponding stand column, and the other end of the bundle of straw is naturally dispersed around. The nutrients and effective area of the straw are sufficiently used; since one end of each bundle of straw is dispersed in space, the occupied space is large, more algae and shells can be attached, and the unit benefits are improved; meanwhile, due to the structure, the ocean current of an ocean can be changed, the flow velocity of the ocean is reduced in the structure, and therefore the contact time between the fish shelter and the straw is prolonged, and the fish shelter is low in weight, simple in structure and easy to repair.

The invention discloses a dry method automobile acoustic absorption roof. The roof is prepared from a roof blank plate through postprocessing forming. The roof blank plate is composed of five layers of plate structures, wherein the first plate layer is prepared from glass fibers and polyethylene adhesive powder with the weight ratio being 2-2.5 to 1; the second plate layer is made from modified expanded polystyrene; the third plate layer is prepared from fiberglass modified polyethylene adhesive powder; the fourth plate layer is prepared from modified expanded polystyrene; and the fifth plate layer is prepared through glass fibers and polyethylene adhesive powder with the weight ratio being 2-2.5 to 1. Through the dry method automobile acoustic absorption roof, the weight of the dry method roof is lowered, the product lightweight is achieved, and the NVH acoustic absorption performance of the roof can be improved.

A wool opening and mixing technology in a cashmere carding process comprises the following steps of S1, uniformly laying up water-washed cashmere with 8-10 centimeters for every layer, uniformly spraying oil-water mixed liquid of 0.07-0.08% on every layer for 10-15 minutes; S2, performing muffled storage on the moisturized water-washed cashmere for 12-24 hours in summer or 12-48 hours in winter; S3, performing opening treatment on the muffled water-washed cashmere through an opening machine to open the cashmere into a fluffy state, feeding the cashmere at a feeding quantity of 200-300 kilograms per hour and a thickness not thicker than 6-10 centimeters; S4, detecting the opened water-washed cashmere and remoisturizing the water-washed cashmere with a machinery moisturizing rate of 24-28%, and counting the water feeding amount during the remoisturizing process. According to the wool opening and mixing technology in the cashmere carding process, by adding mixing oil, the static friction coefficient as well as the dynamic friction coefficient among fiber can be adjusted, the friction force between the fiber and guide rollers can be reduced and static electricity caused by friction during the carding process can be avoided and eliminated, so the wool fiber can smoothly pass through a carding device to avoid wool loosening, winding, fiber breakage and the like.

The invention discloses a fixed seat for a digital communication mobile phone, which comprises a first fixed plate, a second fixed plate is welded to the bottom of the first fixed plate, and the first fixed plate and the second fixed plate are vertically arranged, and the second fixed plate The top of the plate is provided with a first groove along its length direction, the inner wall of the first groove is provided with a second groove, and the inner cavity of the first groove communicates with the inner cavity of the second groove, and the inner wall of the second groove is welded with a sleeve , the inner wall of the bottom end of the sleeve is connected with a spring, the other end of the spring is connected with the first push plate, and the first push plate is slidingly connected with the sleeve, the end of the first push plate far away from the spring is connected with a sponge plate, the first push plate The top is welded with a second push plate, and one end of the second push plate protruding from the second fixing plate is symmetrically connected with a latch. The invention can quickly fix mobile phones of different sizes, and can prevent the mobile phone from slipping from the fixed seat, causing the mobile phone to be broken, and greatly improves the practicability of the fixed seat.

The invention discloses a safe breaking-preventing screw tap chuck which comprises a chuck body and further comprises a screw tap sleeve, a supporting arm and a telescopic tightening screw. A tap sleeve fixing groove is formed in a middle shaft of the front portion of the chuck body. A longitudinal tightening thread hole is formed in the upper side wall and the lower side wall of the tap sleeve fixing groove. The telescopic tightening screw comprises a screw body. The screw tap sleeve is provided with a screw tap fixing groove. The screw tap sleeve is distributed in the tap sleeve fixing groove and tightened and fixed through the telescopic tightening screw by means of the tightening thread hole. The supporting arm comprises a supporting arm body which is approximately shaped like the Arabic number seven and distributed on the left side and the right side of the front portion of the chuck body. The left lower end of the supporting arm body makes contact with a handle portion of a screwtap in an extruding manner. The safe breaking-preventing screw tap chuck has a good effect of fastening the screw tap, the screw tap is replaced conveniently, and breaking of the screw tap is effectively prevented.

The invention relates to an assembly device, which is used for assembling a battery module, and the battery module comprises at least two sub-modules. The assembly device comprises a working platform and a supporting mechanism. The supporting mechanism is installed on the working platform and comprises a first base, at least two first supporting assemblies and a first driving assembly. The first base is arranged on the working platform. The at least two first supporting assemblies are arranged on the first base at intervals in a first horizontal direction and used for supporting the sub-modules. The first driving assembly is connected with the first supporting assemblies and used for driving the first supporting assemblies to move in the first horizontal direction. According to the assembly device, relative friction between the sub-modules and the first supporting assemblies can be avoided, and the phenomenon that an external insulating film of the sub-modules is damaged due to friction is prevented; in addition, the assembly device can achieve full-automatic production, manual operation is not needed, and the assembling efficiency can be greatly improved.

The invention relates to a polyethylene glycol-polycaprolactone phase change fiber and a preparation method thereof, and belongs to the field of phase change nanofiber materials. The fiber is of a core-shell structure, polyethylene glycol serves as a core layer, polycaprolactone serves as a shell layer, the weight-average molecular weight of polyethylene glycol is 1000, and the weight-average molecular weight of polycaprolactone is 80000; and based on 100% of the mass of the fiber, the mass fraction of polyethylene glycol is 21%-48%, and the mass fraction of polycaprolactone is 52%-79%. According to the method, a polyethylene glycol spinning solution is used as an inner tube spinning solution, a polycaprolactone spinning solution is used as an outer tube spinning solution, coaxial electrostatic spinning is performed, and the phase-change fiber is obtained after a solvent is removed. The phase-change fiber shows a complete core-shell structure, has the characteristics of two raw material, has excellent thermal properties and mechanical properties, can adjust the temperature within a certain range, and is environmentally friendly and biodegradable; and the phase-change fiber can be applied to the field of medical phase-change materials and the field of functional textile materials.

The invention provides a powder material for coating a high-wear-resistance automobile hub, relating to the technical field of the machining and production of automobile hubs. The powder material contains the following components in percentage by weight (100% in total): 28%-33% of epoxy resin, 30%-34% of modified carboxyl-terminated saturated polyester resin, 0.5%-0.7% of a curing agent, 20%-25% of wear-resisting powder, 5%-10% of titanium dioxide, 5%-7% of quartz powder and 0.8%-1% of a flatting agent. According to the powder material, the adhesion force between a coating and the hub is enhanced, so that the wear resistance, smoothness and glossiness of the hub are improved.

A surface treatment method used for titanium molecule fission of a titanium product is disclosed. The method includes (1) a step of polishing the titanium product and removing oil stains; (2) a step of putting the polished titanium product into a vacuum heat treatment furnace and maintaining a negative pressure of 8-10 Pa; and (3) a step of raising the temperature in the vacuum heat treatment furnace to 1000-1500 DEG C, maintaining the temperature for 1-5 h, then decreasing the high temperature in a range of 1000-1500 DEG C to 100-500 DEG C, feeding air into the furnace, maintaining the temperature for 0.5-4 h and opening the furnace. According to the method, impurities in the titanium product are removed through high temperature so that environment protection environments are met and application safety is high. After treatment, polishing lines and welding lines are absent, hand lines are not attached to the product, product scratches, dropping breakage, and the like are prevented, color is unified and free of color differences, surfaces are flat, smooth and beautiful, surface hardness of the titanium product is increased, and the overall performance of the product is improved.

The invention is suitable for the technical field of 3D printing and provides a material mixing and conveying device for 3D printing. The material mixing and conveying device for 3D printing comprisesa guide device, a conveying device and a blanking device; the guide device comprises a first inclined track, a second inclined track, a vertical plate and an intermittent device; the intermittent device comprises a fixed plate, a rotating part, an arc-shaped baffle plate and a driving part; the fixed plate is positioned on one side of the second track; the end part of the arc-shaped baffle plateis movably arranged in a rod-shaped track; the blanking device comprises a shell, a push rod, a guide block, a sliding block and a power rod; the power rod comprises a driving rod and a driven rod; astop column is arranged on the driving rod; a first extension section and a second extension section are arranged on the driven rod; the first extension section is located in the rotation range of thedriving rod; a torsion spring is arranged between the driven rod and a second fixing block; and the end part of the sliding block is fixedly connected with the push rod. Therefore, a material loadercan be guided and transported effectively, the material loader can be moved effectively, the working efficiency is improved, and potential safety hazards are reduced.

The invention discloses a drawing die of a water collector used for an air conditioner. The drawing die comprises an upper die holder and a lower die holder, a lower die plate is arranged on the lower die holder, and a drawing terrace die and a cut-off punch are arranged on the lower die plate, wherein the cut-off punch is located on one side of the drawing terrace die, and the cut-off punch is at least twice as high as the material thickness of the water collector. A slugger punch is arranged in the drawing terrace die in a penetrating mode, and the upper end of the slugger punch is higher than the drawing terrace die and lower than the cut-off punch; an upper die plate is arranged on the upper die holder, a drawing concave die is arranged on the upper die plate, and a punching forming cavity corresponding to the slugger punch is formed in the drawing concave die; a lower supporting plate is arranged below the lower die holder and connected with the lower die holder through pad feet, a stripper plate outside the drawing terrace die is located above the lower die plate, the bottom of the stripper plate is connected with a knock out rod penetrating through the lower die plate, the lower end of the knock out rod is connected with a knock out plate, and an elastic piece is pressed between the knock out plate and the lower supporting plate. The drawing die of the water collector used for the air conditioner is reasonable in structure, and the production efficiency can be effectively improved.

The invention provides a battery, and the battery comprises a shell and a plurality of pole core groups packaged in the shell; the pole core groups are connected in series, each pole core group comprises a packaging film and at least one pole core, and at least one pole core is located in a containing cavity formed by the packaging film in a surrounding mode; a space ring is arranged between the two electrode core groups which are connected in series, a through hole is formed in the space ring, each electrode core group comprises a first electrode and a second electrode, and the first electrode and the second electrode extend out of the packaging film; the first electrode of one of the two electrode core groups which are connected in series is connected with the second electrode of the other electrode core group, and the connecting part is accommodated in the through hole; the space ring comprises a peripheral surface facing the inner surface of the shell, at least one first positioning part is formed on the peripheral surface of the space ring, second positioning parts in one-to-one correspondence with the first positioning parts are formed on the inner surface of the shell, and the first positioning parts are matched with the corresponding second positioning parts to fix the space ring and the shell. Meanwhile, the invention further provides a battery pack and an automobile based on the battery provided by the invention.

The invention discloses a PVC glove production device facilitating glove demolding in the technical field of PVC glove processing and production equipment. The PVC glove production device comprises a box body, damping mechanisms, a material conveying shaft, a falling mechanism, a heating mechanism, a cooling mechanism and a discharging mechanism, the damping mechanisms are fixedly connected to four corners of the bottom of the box body, and the material conveying shaft is rotatably connected to the top of an inner cavity of the box body. The PVC glove production device facilitating glove demolding is reasonable in structural design, manual work is replaced with mechanical cooperation to conduct automatic demolding on PVC gloves, the risk that workers are scalded in the working process is fundamentally avoided, the demolding convenience and safety are improved, meanwhile, the effect of cold air circulation is used for replacing air cooling in a traditional device, the time for cooling to the needed temperature is shortened to a great extent, the production efficiency of the device is improved, the function of accurately counting the PVC gloves is achieved through the gravity effect, the counting steps of workers are reduced, and the working efficiency of the workers is improved.

The invention discloses a mixed cable sheath accessory. The mixed cable sheath accessory is prepared from the following raw materials in parts by weight: 40 to 50 parts of III-type resin, 35 to 45 parts of PVC (polyvinyl chloride) resin, 5 to 9 parts of filling agent, 6 to 8 parts of solid paraffin, 4 to 6 parts of impact resistant modifier, 3 to 7 parts of sodium iodide, 4 to 6 parts of antioxidant, 10 to 12 parts of vinyl trimethoxy silane, and 8 to 10 parts of lubricant. The mixed cable sheath accessory has the performances of good anticorrosion effect, resistance to stretch and oxidation and the like.

The invention provides an exhaust temperature sensor and a manufacturing method of the exhaust temperature sensor, and belongs to the technical field of automobile vibration reduction equipment. The exhaust temperature sensor comprises a bushing, a temperature measurement assembly and a vibration reduction assembly, wherein the bushing includes a shell and a core wire, the shell is provided with a first end and a second end in the length direction, one end of the core wire is located in the shell, the other end of the core wire penetrates through the second end and is located outside the shell, the temperature measurement assembly is used for measuring the exhaust temperature, and is arranged at the first end and electrically connected with the core wire, the vibration reduction assembly comprises a resonance suppression pipe and an adapter nut, the resonance suppression pipe comprises a first pipe section, a second pipe section and a third pipe section which are sequentially connected, a buffering cavity is formed between the second pipe section and the shell, the first pipe section is connected to the shell in a sleeving mode, the third pipe section is connected to the second end in a sleeving mode and fixedly connected with the shell, and the adapter nut is fixedly connected to the outer wall of the second pipe section in a sleeving mode. The exhaust temperature sensor can improve the vibration resistance and prolong the service life.

The invention relates to an air exhausting and temperature measuring pipe for hyperthemal perfusion treatment of an abdominal cavity. The air exhausting and temperature measuring pipe comprises an air exhausting pipe body and a temperature detecting unit. The air exhausting pipe body comprises an inner pipe section stretching in the abdominal cavity and an outer pipe section located outside the abdominal cavity all the time. The inner pipe section is provided with an inflation air bag which surrounds the outer wall of the inner end of the inner pipe section. A side hoe is formed in the side wall of the inner end of the inner pipe section, and an inflation connector is arranged on the outer pipe section. The inflation connector is connected with the inflation air bag through an air pipeline located on the inner side of the air exhausting pipe body. The temperature detecting unit comprises a temperature sensing probe fixed to the inner end of the inner pipe section, and a temperature detecting display unit located outside the abdominal cavity, and the temperature detecting display unit and the temperature detecting probe are in signal connection. The air exhausting and temperature measuring pipe is novel in structure, low in cost, capable of monitoring the temperature of perfusate at any time, exhausting excessive air in the body cavity and observing whether the body cavity is filled of the perfusate, capable of improving the precision of treatment operation and achieving safety and repeatability, and capable of being widely used for clinical body cavity perfusion treatment.

The invention discloses a weft feeder for weft processing of an air-jet loom, which comprises a motor, a motor protection case, a yarn winding disc, a yarn storage drum and a yarn clearing device. A heat dissipation groove is arranged on the top surface of the motor protection case to dissipate heat. A filter device is arranged in the tank, and a dust-proof device is arranged above the filter device. The dust-proof device includes a mounting plate and a dust-proof cover. The components include heat-absorbing pipes and heat-dissipating pipes. The invention has simple structure and strong practicability. By changing the heat dissipation mode of the original heat sink type, the heat dissipation effect of the weft feeder is improved, and the service life of the weft feeder is prolonged. At the same time, the design of the yarn clearing device , through the dual combination of the brush and the yarn scraping plate, the cleaning of the yarn storage drum is more convenient, effectively preventing the weft yarn from breaking due to excessive friction during use, and improving the comprehensive utilization efficiency.

The invention discloses a hot melting apparatus. The apparatus comprises a frame, a hot melting part is fixedly mounted at the top of the frame, the hot melting part comprises a lower cold mold and anupper cold mold, a hydraulic cylinder is arranged between the lower cold mold and the upper cold mold, a cylinder is arranged at the top of the upper cold mold, the cylinder penetrates through the upper cold mold and extends into the upper cold mold, the bottom of the cylinder is fixedly connected with an upper hot mold, the lower cold mold is fixedly connected with a lower hot mold, a material feeding device is arranged at the top of the hot melting part, the material feeding device penetrates through the hot melting part and extends into the hot melting part, the top of the frame is fixedlyconnected with transmission tables located at two sides of the hot melting part, mounting grooves are arranged in the top of every transmission table, and the inner wall of every mounting groove is rotatably connected with a transmission wheel. The problem of the influences of easy fracture of the loosely-connected connecting position of just hot melting connected PVC plates during unloading on the working efficiency is solved in the invention.

The invention relates to a network cable, especially a Cat-5e shielded network cable, and belongs to the technical field of network circuit design. The Cat-5e shielded network cable comprises a protective sleeve, a tension wire and four pairs of windings, wherein the tension wire and the four pairs of windings are arranged in the protective sleeve. The Cat-5e shielded network cable is characterized in that the protective sleeve includes a polyester film, an aluminum foil layer, a copper braided net and a PVC sheath from inside to outside successively, each winding is formed by twisting two cores, and each core comprises a conductor and an inner sheath wrapping the conductor. The Cat-5e shielded network cable is reasonable and simple in structure and easy to product and manufacture; and according to the invention, a present network cable is improved, and during use, the network cable of such structure can play a good network shielding function, signal attenuation can be shielded to largest degree, and signal transmission is more stabilizer and rapid.

The invention discloses a dry-process sound-absorbing ceiling for automobiles, which is formed by post-processing the ceiling slabs. The ceiling slabs are composed of 5-layer board structures, wherein the first layer board is made of weight ratio Made of 2-2.5:1 glass fiber and polyethylene rubber powder; the second layer is made of modified expanded polystyrene; the third layer is made of glass fiber modified polyethylene rubber powder : the fourth layer is made of modified expanded polystyrene; the fifth layer is made of glass fiber and polyethylene rubber powder with a weight ratio of 2-2.5:1, and the present invention is used to reduce the dry ceiling The weight of the product can be reduced, and the NVH sound absorption performance of the ceiling itself can be improved.

The present application relates to an assembly device, which is used for assembling a battery module, and the battery module includes at least two sub-modules. The assembly device includes: a working platform and a supporting mechanism. The supporting mechanism is installed on the working platform, and the supporting mechanism includes a first base, at least two first supporting components and a first driving component. Wherein the first base is set on the working platform. At least two first supporting components are arranged on the first base at intervals along the first horizontal direction, and are used to support the sub-module. The first drive assembly is connected with the first support assembly and used to drive the first support assembly to move along the first horizontal direction. The assembly device provided by this application can avoid the relative friction between the sub-module and the first support assembly, and prevent the external insulation film of the sub-module from being damaged due to friction; and the assembly device provided by this application can realize fully automated production , without manual operation, can greatly improve assembly efficiency.