365 results about "Surface roughening" patented technology

The invention discloses a compression test clamping tool, system and method for a variable-thickness beveled laminated plate composite material, and relates to the technical field of aviation composite material mechanical property testing. The first long chuck and the second long chuck are respectively mounted on a variable-thickness side and an equal-thickness side of the beveled laminated plate sample, and the first long chuck mounted on the variable-thickness side is gradually thickened on a conical beveled layer and a thin section of the beveled laminated plate sample. According to the invention, the additional bending moment caused by eccentricity of a neutral shaft is effectively inhibited through the gradually-changed thickening design of the variable-thickness side long chuck in cooperation with gap control, and active inhibition of buckling instability of a beveling area is realized in combination with rigid fixation and surface roughening treatment of the short chuck; the method has the advantages that buckling instability is restrained, a failure area is accurately positioned, and samples of different configurations are adapted.

The invention discloses a high-filling type II anhydrite polyethylene composite packaging material and a preparation method thereof, and belongs to the technical field of plastic packaging materials. The composite material comprises modified gypsum which is coated by nano SiO2 and is synergistically modified by double coupling agents, and polyethylene serving as a base material, wherein the addition amount of the modified gypsum is 60%; a gradient temperature control twin-screw extruder is adopted for processing, during extrusion processing, the front-section temperature is 155-165 DEG C, the middle-section temperature is 185-195 DEG C, the rear-section temperature is 205-215 DEG C, and a gradient filler distribution material is formed after extrusion; the problems that under the condition of 60% high doping, II type anhydrite is difficult to disperse in a polyethylene base material, and under the condition of high doping, the material surface is rough are solved.

The invention discloses a chip-embedded TGV glass substrate and a manufacturing method thereof. The method comprises the following steps: providing a glass core plate; forming a temporary metal mask layer on the first surface of the glass core plate; performing pattern transfer and etching on the temporary metal mask layer; performing dry etching on the glass core plate in the second pattern area to form a first TGV hole; etching the glass core plate in the first pattern area and the second pattern area through a dry method to form a second TGV hole and deepen the depth of the first TGV hole; removing the temporary metal mask layer, performing metallization to form a first conductive through hole and a second conductive through hole, and manufacturing a first rewiring layer; grinding the second surface of the glass core plate until the first conductive through hole is exposed; etching the glass core plate through a dry method to form a cavity until the second conductive through hole is exposed; providing a chip, and embedding the chip into the cavity; therefore, no-damage cavity processing is realized, and the problems of surface damage, dimensional deviation, lateral erosion, microcracks or surface roughening and the like of the substrate are effectively avoided.

The invention provides a ceramic flat sheet membrane end seal bonding surface roughening treatment device, and relates to the technical field of flat sheet ceramic membrane manufacturing, the ceramic flat sheet membrane end seal bonding surface roughening treatment device comprises a fixing plate, two grooves are formed in the outer wall of the fixing plate, connecting rods are slidably connected to the positions, corresponding to the grooves, of the outer wall of the fixing plate, and fixers are fixedly connected to the outer walls of the connecting rods; a pressure sensor is installed on the outer wall of the bottom end of the fixator, supporting plates are fixedly connected to the outer walls of the two sides of the fixing plate, adjusters are installed on the outer walls of the supporting plates, adjusting rods are fixedly connected to the outer walls of the adjusters, and a plurality of threaded holes are formed in the outer walls of the adjusting rods. According to the device, the groove structure of the continuous sinusoidal waveform structure similar to the gecko sole line is adopted, the binding force between the polymer and the plastic end seal can be improved to a great extent, the pressure sensor and other structures are additionally arranged, the machining state of the device can be detected in real time, and therefore the practicability of the device is higher.

This invention relates to a method for surface roughening of high-end copper foil for electronic circuits, comprising the following steps: sequentially performing acid washing, roughening, blackening, ashing, passivation, and coupling agent coating on raw copper foil, with water washing steps interspersed between these steps, and finally drying and winding. The method is characterized in that the roughening step uses an alkaline plating solution containing copper pyrophosphate. This invention provides an alkaline plating solution for alkaline roughening of raw copper foil, generating grains with lower roughness on the already extremely thin surface of high-end copper foil. The grain size is between 0.02 and 0.1 micrometers. After deposition on the raw foil, the surface roughness of the finished foil increases by approximately 0.2 to 0.3 micrometers, ensuring that the surface roughness of the final product meets the requirements of high-end copper foil while maintaining peel strength.

The invention discloses a method for eliminating rough stripes on the surface of a duplex stainless steel cold plate, which comprises the following steps: the interval time from the end of cutting of a duplex stainless steel casting blank to the beginning of coping is more than or equal to 48 hours, and the surface temperature of the casting blank before coping is less than or equal to 80 DEG C; the surface of the casting blank is ground for the first time through a 20 # grinding wheel, the opening degree of a screw-down valve of a hydraulic machine ranges from 50% to 70%, the current of a grinding machine ranges from 30 A to 50 A, the stepping of the grinding wheel ranges from 25 mm to 35 mm, and the moving speed of a grinding trolley ranges from 35 m / min to 45 m / min; a 36 # grinding wheel is used for grinding the surface of the casting blank for the second time and the third time, the opening degree of a screw-down valve of the hydraulic machine is 30-50%, the current of the grinding machine is 10-30 A, the stepping of the grinding wheel is 15-25 mm, and the moving speed of the grinding trolley is 25-35 m / min. According to the method, the surface of the casting blank is ground before hot continuous rolling, the surface roughness of the casting blank is reduced, after the ground casting blank is subjected to hot rolling, the thickness of iron and phosphorus on the surface of the plate is basically consistent, the iron and phosphorus can be completely removed after phosphorus removal, macroscopic chromatic aberration is eliminated on the surface of the cold-rolled plate, and therefore rough stripes on the surface of the duplex stainless steel cold plate are eliminated.

The invention relates to the technical field of image processing, and provides a pipe fitting stretching surface feature extraction method, which comprises the following steps: obtaining a surface image of a pipe fitting stretching surface, and obtaining an initial edge image of the pipe fitting stretching surface through edge detection; quantifying the surface concavity and convexity of the stretching surface of the pipe fitting based on the pixel gradient difference expression of the stretching surface of the pipe fitting; combining the spectrogram width of the initial edge image and the amplitude fluctuation condition of the high-frequency component to obtain the surface roughness influence degree of the stretching surface of the pipe fitting; the glossiness difference of all pixel points of the pipe fitting stretching surface is analyzed, and the surface flatness degree of the pipe fitting stretching surface is obtained; obtaining the surface roughness scattering degree of the stretching surface of the pipe fitting; edge continuity of edge detection is determined, and final optimization parameters of edge detection are obtained; and obtaining a final edge image, and carrying out feature extraction on the pipe fitting stretching surface based on the edge expression in the final edge image. The invention aims to solve the problem of feature loss caused by incapability of accurate extraction due to surface quality interference in a pipe fitting stretching surface feature extraction process.

The utility model discloses a split type mold for vacuum centrifugal casting, which comprises a lower mold body and is characterized in that the lower mold body comprises an outer mold part and an inner mold part which are arranged in a split type, and the outer mold part is movably mounted on the inner mold part; the inner die piece comprises a lower die base and an inner die installed on the lower die base. According to the utility model, the lower mold body is arranged in a split manner and is divided into the outer mold piece and the inner mold piece, so that when a rotor iron core and the inner mold body are demolded, multi-time demolding and single-time and single-side demolding can be carried out, the thrust during demolding is reduced, and the demolding efficiency is improved. And meanwhile, galling on the surface of the rotor iron core due to the fact that inner and outer demolding is completed at a time by strong force is avoided.

A magnetic roller shell surface roughening processing technology relates to the technical field of magnetic roller metal surface processing for printers and the like, a magnetic polishing machine is adopted, a polishing groove is formed in the magnetic polishing machine, partitions are arranged in the polishing groove to divide the polishing groove into N cells, the cells are used for placing collision materials and a magnetic roller shell, medium water is placed in the polishing groove, and the magnetic roller shell is placed in the medium water. The collision material is driven by the magnetic field to collide the surface of the magnetic roller shell in medium water to form a pit, and the magnetic roller shell is collided to rotate, so that the whole outer surface of the magnetic roller shell can be collided; and the pits which are impacted by the collision material for multiple times are overlapped in a staggered manner to realize the surface roughening treatment of the magnetic roller shell. Therefore, the overall abrasive resistance of the magnetic roller shell is improved, the conductivity is improved, the negative direct current bias overload phenomenon is reduced, the drum core is better protected, and the carbon powder consumption is reduced.

The CVD diamond optical grinding process comprises the following steps that S1, surface cleaning is conducted on a selected diamond workpiece to be ground, and grinding discs with different grinding coefficients are selected, S2, the grinding stage is divided into the rough grinding stage and the fine grinding stage, the grinding disc with the finer surface roughness degree is replaced after rough grinding, and the grinding disc with the finer surface roughness degree is replaced after fine grinding. S3, according to the thickness of the diamond, the heights of a plurality of grinding heads are adjusted to adapt to the diamonds with different thicknesses, a first grinding motor and a second grinding motor are started for grinding, and in the grinding process, the limiting assemblies and the grinding assemblies are matched for use, so that the grinding efficiency is improved; and meanwhile, due to the fact that the autorotation direction and the circular motion direction of the grinding head and the second grinding planetary gear are opposite, regular grinding traces generated by traditional single-direction grinding are effectively broken through, and grinding is more uniform.

The invention relates to a sapphire wafer back surface roughening method, which is based on a planetary double-sided grinding machine platform, and comprises the following steps: firstly, bonding the front surface of a low-TTV sapphire wafer subjected to double-sided accurate grinding and polishing to the surface of a ceramic plate, then fixing the ceramic plate on a wandering star wheel, then placing the wandering star wheel on a lower grinding plate, and grinding the sapphire wafer back surface with the lower grinding plate; wherein the back surface of the wafer faces the lower grinding disc; the upper grinding disc is forbidden, a sun gear and inner gear transmission mechanism is utilized, the wandering star wheel rotates on the lower grinding disc to form a precise grinding interface, and roughening of the back face of the sapphire wafer is achieved by regulating and controlling the rotating speed of the sun gear, the inner gear and the wandering star wheel. According to the method, on one hand, wafer thickness uniformity and parallelism control is achieved through the double-face polishing technology, on the other hand, low TTV control over the obtained single polished wafer is achieved in the roughening process through combination of equipment design and technology innovation, and the method is suitable for the 8-12-inch sapphire wafer and can be applied to the fields needing high-precision thickness control such as LED or semiconductor manufacturing.

The invention relates to the field of semiconductors and piezoelectric materials, in particular to a method for improving bonding strength of a lithium tantalate wafer, which comprises the following steps: a) thinning, polishing and cleaning the lithium tantalate wafer; b) cleaning the substrate slice with a weakly alkaline solution and then immediately cleaning the substrate slice with a cooling water bath; c) carrying out step-by-step cooling treatment on the substrate slice and then storing at constant temperature; d) carrying out surface activation on the lithium tantalate wafer and the substrate slice by using plasma; e) aligning the lithium tantalate wafer and the substrate slice, and pressurizing and bonding to obtain a bonded slice; and f) inspecting the bonding sheet. By optimizing the lithium tantalate wafer thinning and polishing process and the substrate slice low-temperature treatment process, the problems of edge tilting and surface roughness of the lithium tantalate wafer, self defects of the substrate slice and poor bonding caused by difference of thermal expansion coefficients of a functional layer and a substrate layer during bonding are effectively solved, and high-strength, high-precision and high-stability bonding is realized.

The invention discloses a manufacturing process of a high-temperature-resistant washing tooling fabric, which relates to the technical field of tooling fabrics and comprises a fabric base material conditioning part, a fabric weaving processing part, a fabric dyeing treatment part and an after-finishing part. The fabric base material conditioning part adopts composite fibers, and the composite fibers are sequentially subjected to surface roughening treatment, PAMAM-polydopamine composite coating treatment and inorganic nanoparticle loading treatment; the fabric weaving processing part is used for preparing gray cloth; the fabric dyeing treatment part is used for preparing dyed gray cloth. The composite fibers are sequentially subjected to surface roughening, PAMAM-polydopamine composite coating and inorganic nanoparticle loading treatment and then subjected to weaving, dyeing and after-finishing, so that the structural stability and dye adhesion of the tooling fabric can be effectively improved, the high-temperature washing resistance is enhanced, and the service life of the tooling fabric is prolonged. Therefore, the manufacturing process of the high-temperature-washing-resistant tooling fabric has the effects of improving the dimensional stability and the color adhesive force.

The invention provides a fiber reinforced resin composite material and a preparation method thereof, composite resin and a protective product. The fibers are subjected to surface roughening and / or active groups are introduced to form modified fibers, and the active groups comprise one or more of hydroxyl, alkenyl, alkynyl, amino and halogen; coating the surfaces of the modified fibers with a thermoplastic resin solution grafted with maleic anhydride groups and / or epoxy groups, and performing heat treatment to form a first functional layer; nano particles are attached to the surface of the first functional layer and / or a supramolecular network structure is formed, and a second functional layer is formed. According to the preparation method, the interface bonding performance between the fiber and the resin is remarkably improved, and the prepared fiber-reinforced resin composite material has excellent strength, barrier performance, protection performance and the like.

The utility model relates to a coating device for a corrosion-resistant insulating coating surface, which belongs to the technical field of corrosion-resistant insulating coating and comprises a processing bin, two storage boxes are fixed at the rear end of the processing bin, two spraying pipes are arranged in the processing bin, a plurality of spraying heads are fixed and communicated with opposite walls of the two spraying pipes, and the spraying heads are communicated with the processing bin. A frame plate is fixed to the rear wall of the processing bin, and an adjusting mechanism used for adjusting the distance between the two spraying pipes is arranged at the rear ends of the two spraying pipes. The adjusting mechanism comprises sleeve blocks fixed to the outer surfaces of the two spraying pipes. According to the coating device for the surface of the corrosion-resistant insulating coating, the distance between the two spraying pipes can be shortened, so that the height of the positions where the two spraying pipes are located can be adjusted according to the thickness of a workpiece, adjustment can be conducted according to the thickness of the workpiece, and the problems that due to the fact that the distance is too short, a paint film becomes thick, sagging is possibly caused, the spraying distance is too long, and the spraying efficiency is high are solved. The paint film is thinned, the surface is rough, and the paint loss is large.

The application discloses a round-shank hard alloy cutter base surface pretreatment method, which comprises the following steps: S1, spraying soft abrasive to the blade part of the cutter base for micro passivation treatment; S2, inserting the blade part after the micro passivation treatment into hard abrasive, and rotating the blade part to perform friction roughening treatment; and S3, immersing the cutter base after the friction roughening treatment in a mixed acid solution to perform etching treatment. The hard alloy cutter pretreatment method provided by the application is simple in operation and has wide applicability to cutter shapes; the surface state of the cutter after treatment is quantitatively characterized, and the repeatability and stability in industrial production are improved; the soft abrasive is first used to perform micro passivation treatment on the blade part, and then the hard abrasive is used to perform friction roughening treatment on the blade part, so that the cutter surface roughening is more uniform.

The application discloses a preparation method of a multi-layer composite film system, a conductive thin film and a semiconductor device. The preparation method of the multi-layer composite film system comprises the following steps: preparing a first layer of metal film on a substrate by a vacuum coating method; performing surface roughening treatment on the first layer of metal film; and preparing a second layer of metal film on the first layer of metal film after the surface roughening treatment by the vacuum coating method. The preparation method of the multi-layer composite film system can enhance the adhesion between the film layers by performing the surface roughening treatment on the first layer of metal film, so that the mechanical combination mode is adopted between the film layers, the adhesion between the film layers is improved, some film layers which cannot be combined under vacuum can be effectively connected in the mechanical combination mode, the equipment investment cost is reduced, the multi-layer film system of various types is prepared by a single device, the substrate rework is effectively reduced or prevented, and the production cost is greatly reduced.

This invention relates to the field of tunnel concrete lining coating technology, and discloses a surface roughening coating material for hydraulic tunnel concrete lining. The material includes a pre-prepared coating base component, and porous ceramics and zeolite added to the coating base component before construction. The porous ceramics and zeolite are added after pretreatment, the pretreatment steps being: washing with clean water, drying, soaking and stirring in deionized water, allowing the deionized water to flow, and soaking in deionized water in a pressurized tank. The pre-prepared coating base component, after being stirred and produced, is stored in a packaging container and is only opened before construction and thoroughly mixed with the porous ceramics and zeolite. Construction must be completed within 1 hour after mixing. This invention, by adding specifically pre-treated porous ceramics and zeolite, can significantly improve the surface roughness reduction effect of hydraulic tunnel concrete lining, effectively solving the problems of shrinkage and pitting caused by concrete water absorption, reducing surface roughness, and meeting the needs of tunnel use.

The application discloses an ITO surface roughening treatment method, comprising the following steps: preparing a GaN wafer, wherein the surface of the GaN wafer is covered with an ITO film layer; performing ion beam bombardment on the ITO film layer by using a preset ion dose of a low-energy ion beam, and meanwhile, the GaN wafer is self-rotated at a preset speed, so that a regularly arranged point structure of nanometer size is formed on the surface of the ITO film layer, and an ITO film layer after surface roughening is obtained. The application has the advantages of simple operation, low cost, high production efficiency, and the like, and can effectively improve the external quantum efficiency of an LED chip and improve the light-emitting brightness of the LED.

This invention discloses a selective roughening method for ceramic copper-clad laminates, comprising the following preparation steps: S1 printing an active solder layer between ceramic and copper foil; S2 preparing the ceramic copper-clad laminate; S3 etching copper onto the sintered ceramic copper-clad laminate; S4 removing unwanted solder layers; S5 cleaning, roughening, cleaning, acid washing, cleaning, immersion, and drying the patterned ceramic copper-clad laminate according to the following process, and filling it with nano-silicon and organosilane; S6 printing a thermosetting wet film to expose the area to be surface treated; S7 removing the surface roughening structure; S8 finally, subjecting the ceramic copper-clad laminate to nickel plating, chemical silvering, and then stripping to form the final structure. Compared with the prior art, this invention has the following beneficial effects: effectively avoiding the problem of solder voids caused by surface roughening pits, good surface weldability, and the concave structure of the welding area effectively prevents solder overflow during the welding process and reduces micropores in the chemical silver plating layer.

The invention discloses an electrolytic copper foil surface roughening method. The method comprises the following steps: performing degreasing, water washing and acid pickling activation pretreatment on an electrolytic copper foil to remove oil stains, impurities and an oxide layer on the surface; primary coarsening, curing treatment, secondary coarsening and post-treatment are sequentially carried out, and in the primary coarsening process, electrolyte containing specific components is utilized, and electrolysis is carried out under the specified current density, temperature and time; a specific curing liquid is adopted for curing treatment, and relevant parameters are controlled; an electrolyte containing lanthanum sulfate and other components is used for secondary coarsening; the post-treatment comprises water washing, repeated coarsening, chromate passivation and hot air drying. According to the electrolytic copper foil treated through the method, the surface roughness Rz is smaller than or equal to 2.5 micrometers, the (220) crystal face proportion exceeds 80%, the peeling strength with a substrate reaches 1.2 N / mm or above, the application requirements of high-speed and high-frequency PCBs and high-performance lithium ion batteries can be effectively met, and the product performance and quality are improved.

This invention discloses a material with high photothermal conversion efficiency, its preparation method, and its application in neural modulation, belonging to the field of biomedical technology. In this method, liquid metal is ultrasonically spun into nanoscale particles. Using these liquid metal nanoparticles as templates, hollow nanoshells composed of ultra-small metal nanoparticles can be prepared through an electrocoupling reaction with a metal salt. This method is simple, easy to operate, and applicable to various metals. The prepared material with high photothermal conversion efficiency has a hollow structure, a rough surface, and pores. This unique structure endows it with a strong photon trapping ability, significantly enhancing light absorption and exhibiting ultra-high photothermal conversion efficiency. This invention allows for the injection of this material into the nerve, utilizing its excellent photothermal effect for rapid and precise neural modulation, thereby achieving effective prevention and treatment of autonomic nervous system-related diseases, and showing promising application prospects.

The multistage recovery treatment equipment comprises a treatment frame and further comprises a separation module, a mounting frame is fixedly mounted on the left side of the treatment frame, and a transmission shaft rotationally penetrates through the right side of the mounting frame; the separation module comprises a salvage plate, a solid plate, a separation plate, a separation spring, a solid frame, a convex block plate, a salvage hole, a waste liquid inlet pipe and a square hole, the salvage plate is fixedly mounted on the circumferential surface of the transmission shaft, the solid plate is fixedly mounted on the inner wall of the disposal frame, and the separation plate is slidably mounted on the inner wall of the disposal frame. The protruding block plates make contact with the inner walls of the separation holes and loosen the textile fabric retained on the inner walls of the separation holes due to extrusion force of the fishing plate, the fishing plate is made of an aluminum alloy material with the rough surface, the situation that the textile fabric is retained to breed microorganisms to pollute water can be avoided due to loosening of the textile fabric, and the reliability of wastewater separation treatment is ensured. The textile fabric loosening device has the advantage of being capable of loosening textile fabrics retained on the inner walls of the separation holes.

The invention discloses a melamine ware made of a melamine composite material and a manufacturing method of the melamine ware. The melamine ware is a ware forming body which is made of the composite material formed by mixing a melamine powder granular raw material, melamine secondary material fragments and melamine resin bright powder through one-time hot press forming operation. The melamine vessel comprises a combined body and a plurality of melamine secondary material fragments, wherein the melamine secondary material fragments are irregular fragments with different sizes or various colors formed by utilizing a melamine secondary material subjected to hot press molding and performing crushing treatment; wherein in the hot press molding operation, the melamine powder granular raw material and the melamine resin bright powder can be hot-pressed and melted into a combined body, and the combined body is tightly adhered and coated on the outer surface of each melamine secondary material fragment; therefore, the defects that the surface of the vessel is rough and unsmooth and the vessel is easy to peel and fall off when being collided due to the fact that the melamine secondary material fragments are easy to protrude out of the surface of the vessel are overcome.

The environment-friendly surface roughening treatment device comprises supporting plates and a closed roughening box body, supporting guide columns are fixedly connected to the lower ends of the supporting plates, and reinforcing ribs are fixedly connected to the opposite sides of the multiple sets of supporting guide columns; a closed coarsening box body is fixedly mounted at the upper end of the supporting plate, curved surfaces, uneven parts and the like of plastic parts can be automatically matched through the uniform clamping mechanism and the elastic telescopic function of a clamping rubber head, uniform distribution of clamping force is ensured, and the situation that due to the irregular shape, the local parts cannot be fixed, and the machining precision is improved is avoided. The device is suitable for automobile interior plastic parts with complex shapes such as an instrument panel, a door panel and a center console, ensures that curved surfaces, grooves and the like of the plastic parts can be stably fixed, avoids non-uniform or omission of sand blasting caused by shaking or displacement, and avoids the situation that the curved surfaces, uneven parts and the like of part of the surfaces of the plastic parts cannot be positioned and clamped; and the situation that sand blasting roughening operation cannot be completed on the surfaces of part of plastic parts is avoided.

The utility model discloses a wire drawing device for pultrusion of an insulating main shaft of a composite on-load tap-changer. The wire drawing device comprises an upper wire drawing mechanism and a lower wire drawing mechanism, the upper wire drawing mechanism comprises an upper supporting plate, an upper bottom plate and an upper stress block; the upper supporting plate is arranged along the direction of the stay wire; the upper bottom plate is horizontally fixed to the bottom of the upper supporting plate. The upper stress blocks are a plurality of strip-shaped plates which are fixed at the bottom of the upper bottom plate and are vertical to the direction of the stay wire; the lower wire pulling mechanism comprises a lower supporting plate, a lower bottom plate and a lower stress block; the lower supporting plate is arranged along the direction of the stay wire; the lower bottom plate is horizontally fixed to the top of the lower supporting plate and located below the upper bottom plate. The lower stress blocks are a plurality of long-strip-shaped plates which are fixed to the top of the lower bottom plate and are perpendicular to the direction of the stay wire. Meanwhile, the lower stress blocks are located below the upper stress blocks, and the lower stress blocks and the upper stress blocks are arranged in a staggered mode. The utility model can effectively solve the problems of yarn asynchronization, product slipping, rough product surface, internal clearance residue and uneven appearance color, and effectively improves the qualified rate of the insulating main shaft during continuous production.

The application belongs to the technical field of mold manufacturing, and particularly relates to an extrusion mold, which comprises a cover plate and a base, and further comprises an inner mold sleeve made of PTFE material, the base is provided with a channel with open ends, the base is coaxially provided with an expansion port at one end of the channel, the inner mold sleeve is coaxially installed in the expansion port, the inner diameter of the inner mold sleeve is equal to the inner diameter of the channel, the cover plate is coaxially covered on the expansion port, the cover plate is located on one side of the bottom of the inner mold sleeve away from the expansion port, the cover plate is provided with a through hole, and the inner diameter of the through hole is greater than or equal to the inner diameter of the inner mold sleeve; the inner mold sleeve made of PTFE material is installed at the discharge port of the extrusion mold, so that the friction coefficient of the discharge port is reduced, the surface of the extruded polyethylene is smooth, and the problem that the polyethylene is mostly extruded by using a common steel material mold at present, so that the surface of the extruded polyethylene is rough and the discharge port of the mold has precipitates is solved.

The utility model discloses a sole surface roughing machine in the technical field of shoe production, which comprises a rack, a roughing table is arranged in the middle of the rack, a transverse moving mechanism fixed on the rack is arranged above the roughing table, a downward pressing mechanism is mounted on a displacement part of the transverse moving mechanism, and a sole placed on the roughing table is pressed down through the downward pressing mechanism. The shoe soles can be roughened in cooperation with the movement of the transverse moving mechanism; an obliquely downward discharging sliding plate is mounted at the tail end of the roughing table; the downward pressing mechanism is driven by the transverse moving mechanism to convey the shoe soles, automatic feeding of the shoe soles can be achieved, and even downward pressing force can be applied to all positions of the shoe soles when the shoe soles are polished; 2, through a dust collection cover and a dust collection head, roughing scraps can be absorbed, meanwhile, scraps left on the shoe sole can be highly absorbed, and the cleanliness of the roughed shoe sole is ensured; and 3, through the cleaning roller shaft which rotates synchronously with the roughing roller shaft, high-speed rotating cleaning can be performed on the roughed shoe sole, and the residual scraps of the shoe sole can be effectively reduced.