90results about How to "Reduce tearing" patented technology

The screen display glass film tearing equipment comprises a screen display glass loading unit, a film tearing unit and an adhesive supply unit, the screen display glass loading unit comprises a carrying table and a moving mechanism, the carrying table is used for positioning screen display glass downwards from a to-be-torn film, the film tearing unit is located below the to-be-torn film and comprises a film tearing head and a power device, and the film tearing head comprises a film tearing seat, a clamping jaw and a roller; the power device comprises a first power piece and a second power piece. On one hand, on the basis of movement cooperation of the clamping jaw and the rolling wheel, aligned gradual stripping of the rolling position and the stripping position of the to-be-torn film is kept, and on the other hand, the overturning angle is increased based on follow-up overturning of the extending section, so that the success rate of forming the stripping angle by inward overturning of the to-be-torn film is greatly increased; the probability that the glue is separated from the to-be-torn film or the corner of the to-be-torn film is torn is effectively reduced; on the other hand, diagonal film tearing is formed based on the relative movement of the screen display glass and the clamping jaw, the risk that the protective film is torn or falls off is reduced, and the whole film is torn off more efficiently in a more labor-saving mode.

The invention discloses a composite rubber material with wear resistance and high tear strength and a preparation method of the composite rubber material, and belongs to the technical field of rubber material processing. The technical problem that the enhancement effect of the filler on the wear resistance, tear resistance and mechanical strength of a rubber matrix needs to be further improved exists in the prior art. The composite material comprises the following components in parts by weight: 100-110 parts of internal mixed rubber, 1-2 parts of a vulcanization accelerator and 2-3 parts of a vulcanizing agent, modified polybutadiene is reinforced by aramid pulp, modified carbon black and modified graphene to prepare composite polybutadiene, and then styrene butadiene rubber is reinforced and modified by the prepared composite polybutadiene and silicone rubber to prepare the composite material. By improving the degree of crosslinking between material molecules and optimizing material composition, the wear resistance and tear resistance of the composite rubber material are effectively improved, and the mechanical property of the composite rubber material is also improved.

According to the preparation method for the positive electrode material of the aluminum electrolytic capacitor, the base material aluminum foil is not fully coated with the aluminum powder slurry, but blank areas are reserved on the left side and the right side, the blank areas are coated with a layer of anti-sticking slurry containing oxide particles or ceramic particles with the melting point higher than that of aluminum, and the melting point of the particles is higher than that of the aluminum; diffusion among aluminum atoms can be effectively blocked, an anti-sticking layer is formed, and adhesion between adjacent aluminum foil layers is prevented; due to the use of the anti-sticking slurry, the adhesive force between the aluminum foil layers is reduced, so that the occurrence of tearing and wrinkling in the processes of coil dividing, sintering, formation and subsequent treatment is reduced, the reliability of the aluminum electrolytic capacitor is improved, and the service life of the aluminum electrolytic capacitor is prolonged; according to the anti-adhesion sintered foil manufactured through the method, the width of the blank area is preferably 5-20 mm, and the design guarantees the sufficient anti-adhesion effect and does not affect the effective use area of the aluminum foil.

The invention discloses a cutting device for manufacturing a reinforced concrete prefabricated frame, and relates to the technical field of disc type cutting machines, the cutting device comprises a disc type cutting machine body, one end of the outer surface of the disc type cutting machine body is rotatably connected with a supporting chassis, the top of the supporting chassis is fixedly provided with a gradienter, and the bottom of the supporting chassis is slidably connected with a guide rail; the two guide rails are symmetrically arranged; the slow cutting of the reinforced concrete prefabricated frame is realized by limiting the manual over-fast movement of the disc type cutting machine body, and the slow cutting is beneficial to the realization of a smoother cutting surface because the lower speed allows the blade to be more fully contacted with the material, thereby realizing more uniform cutting force distribution, and improving the cutting efficiency of the reinforced concrete prefabricated frame. The uniform force distribution reduces the tearing and crushing of materials, so that the cutting surface is neater and smoother, meanwhile, the movement speed of the disc type cutting machine body is prevented from being too high, and the cutting precision of the reinforced concrete prefabricated frame is prevented from being influenced by the deviation of the blade in the cutting process.

The invention discloses a dry type engine cylinder block evanescent mode mold with an ejection function, and relates to the technical field of evanescent mode molds, the dry type engine cylinder block evanescent mode mold comprises a lower mold base, a placing plate is arranged in the lower mold base, a butt joint groove is formed in the side of the placing plate, and a butt joint rod is connected into the butt joint groove in a nested mode; and meanwhile, the upper end of the butt joint rod is fixedly connected with an upper die base. According to the dry type engine cylinder block evanescent mode mold with the ejection function, when the lower mold base is separated from the upper mold base, a butt joint rod arranged on the lower side of the upper mold base is separated from a butt joint groove, the butt joint groove does not abut against an inclined block, at the moment, a primary ejection mechanism operates, and an ejection rod can be driven to move upwards through the primary ejection mechanism; and when the placing plate moves downwards, the secondary ejection mechanism can be synchronously driven to operate, and the abutting plate can be driven by the secondary ejection mechanism to carry out auxiliary ejection on the side of the mold, so that the possibility that the edge of the mold is damaged during demolding is reduced.

The invention provides a cable outer sheath stripping machine which comprises a feeding roller line, a stripping machine box, a discharging roller line and a controller arranged on the stripping machine box, a clamping and conveying mechanism and a stripping mechanism are arranged in the stripping machine box, and the stripping mechanism comprises a mounting plate, a feeding roller line, a discharging roller line and a controller, the two supporting tool rests are installed on the side face of the installation plate and located above and below a to-be-cut cable respectively. The circular cutter is rotationally connected to the supporting cutter frame; the diameter adjusting assembly is used for adjusting the distance between the two supporting tool rests. The thickness adjusting assembly is used for adjusting the cut-in depth of the circular cutter. The thickness adjusting assembly comprises a cut-in depth detection mechanism used for detecting whether the circular cutter cuts in and makes contact with the steel armor layer or not. The cable outer sheath longitudinal cutting device can adapt to longitudinal cutting work of cable outer sheaths with different diameters and different thicknesses, and the convenience, universality and peeling efficiency of cable outer sheath peeling work are improved.

The utility model provides a ruminant living body muscle adipose tissue minimally invasive sampling device, which relates to the technical field of animal tissue sampling, and comprises an outer sleeve and an inner cutting rod, one end of the outer sleeve is provided with a needle, the other end of the outer sleeve is provided with a handle, and the outer sleeve is provided with a sampling groove close to the needle; the inner cutting rod is movably arranged in the outer sleeve, and a sampling knife is correspondingly arranged at the sampling groove. The animal sampling device has the advantages of being high in sampling efficiency, capable of reducing animal injuries, convenient, easy and fast to operate and low in cost.

The invention relates to the technical field of medical assistance, in particular to a surgical drape and a using method thereof.The surgical drape comprises a laying assembly used for laying the drape, a positioning assembly used for positioning the surgical position and a drainage assembly used for adsorbing hydrops; the laying assembly comprises a center rod and a controller. The center rod is sequentially sleeved with a main rotating plate and a plurality of auxiliary rotating plates from top to bottom. Guide rods are fixedly connected to the bottoms of the main rotating plate and the auxiliary rotating plate; the side wall of each auxiliary rotating plate is fixedly connected with a guide ring used for limiting the corresponding guide rod. Arc-shaped guide grooves are formed in the tops of the auxiliary rotating plates; the guide rods are in sliding fit with the guide grooves located in the same horizontal height with the guide rods. One side of the main rotating plate is detachably connected with the paving towel; a driving part is arranged on the main rotating plate, and the controller is used for controlling the driving part to operate so as to drive the main rotating plate to rotate around the center rod. The structure is complete, and the operation efficiency can be improved.

The utility model discloses antibacterial deodorant chemical fabric, which relates to the related field of chemical fabric and comprises a chemical fabric main body, a protective pad layer is arranged on the top surface of the chemical fabric main body, a breathable pad layer is arranged on the bottom surface of the chemical fabric main body, and a first latticed layer and a second latticed layer are arranged on the upper side and the lower side of silver ion antibacterial fabric. A large amount of ventilation space is reserved in the ventilation cushion layer, when air penetrates through the silver fox velvet layer and enters the ventilation cushion layer, the air is firstly subjected to antibacterial operation through the silver ion antibacterial fabric, and bacteria are prevented from breeding in the ventilation cushion layer; meanwhile, air circulates with the silver ion antibacterial fabric to a certain degree in the first latticed layer and the second latticed layer and reaches the outside through other fabric above, so that the air circulation in the breathable cushion layer is improved, and the problem of stinking caused by internal air retention is greatly solved.

The utility model relates to a switching structure, a photovoltaic support and a photovoltaic system. The switching structure is used for connecting the photovoltaic frame and the supporting structure and comprises a first locking piece and a second locking piece. The first locking piece is provided with a clamping groove, and the clamping groove is used for being connected with the photovoltaic frame in a clamping mode. The second locking piece is detachably connected to the first locking piece, and a locking space is formed between the second locking piece and the first locking piece to clamp the supporting structure. The groove wall face of the clamping groove can abut against the photovoltaic frame, so that movement of the photovoltaic frame in the clamping direction is limited, and the situation that the photovoltaic frame is disengaged from the switching structure due to the fact that the photovoltaic frame is subjected to uneven wind loads can be effectively reduced. The photovoltaic frame and the first locking piece are in hoop type surface contact, a larger contact area is provided, pressure can be better dispersed and borne, local stress concentration is reduced, local abrasion and tearing are reduced, higher contact stability can be provided, external acting force can be better borne, and vibration can be better resisted; therefore, the tearing failure of the photovoltaic frame can be reduced.

The utility model relates to the technical field of electric coagulation haemostatic forceps, and discloses a miniature electric coagulation haemostatic forceps for animal test surgery, which comprises two connecting rods, the left sides of the two connecting rods are fixedly connected with extension rods, the exteriors of the two extension rods are connected with sliding sleeves in a sliding manner, elastic assemblies are arranged in the extension rods, and the elastic assemblies are connected with the sliding sleeves in a sliding manner. A sliding groove is formed in the left side of the interior of the extension rod, a hemisphere is fixedly connected to the bottom of the elastic assembly, a plurality of clamping grooves are formed in the bottom side of the interior of the sliding sleeve, an outer clamp body is fixedly connected to the left side of one connecting rod, and an inner clamp body is fixedly connected to the left side of the other connecting rod. According to the haemostatic forceps, after the hemisphere moves to the designated clamping groove position, the spring releases elastic potential energy, the hemisphere is pushed to reset and be clamped in the clamping groove in the bottom of the sliding sleeve, and therefore the length of the haemostatic forceps is locked. The length of the hemostatic forceps can be flexibly adjusted according to the requirements of different operation scenes, and a doctor can operate and use the hemostatic forceps conveniently.

The invention belongs to the technical field of auxiliary rehabilitation, and provides a skin pressure sensing device. The invention relates to a skin pressure sensing device which comprises a mounting group plate, and the mounting group plate is provided with at least one connecting plate and at least one connecting belt; any two adjacent connecting plates are connected through a connecting belt. The connecting plate is further provided with at least one vent hole, and the vent holes are evenly distributed in the connecting plate. Wherein the connecting plate is located on the skin surface of a patient; the vacuum assembly is arranged above the mounting assembly plate and covers the skin; the vacuum assembly comprises a vacuum sleeve, the vacuum sleeve is provided with a tightening opening, the vacuum sleeve is fastened on the body of a patient through the tightening opening, and vacuum can be formed. The device not only is reasonable in design, but also is simple to operate, and can reduce bacteria breeding of a wound by realizing an oxygen-free environment; the wound rehabilitation efficiency is effectively improved, so that the device is suitable for industrial popularization.

The utility model belongs to the technical field of paper embossing equipment, and particularly relates to an embossing structure not easy to peel off paper, which comprises a U-shaped base, a flat roller and an embossing roller are rotatably arranged in a groove of the base, and the embossing roller is movably arranged above the flat roller; the lifting structure is arranged between the knurling roller and the base and is used for adjusting the height of the knurling roller; and the convex blocks are arranged on the outer wall of the embossing roller, and a plurality of convex blocks are uniformly distributed in the circumferential direction of the embossing roller. The effects that the paper layers are tightly combined in a physical mode, and meanwhile the overall quality of the paper is maintained are achieved.

The utility model discloses an anti-tear protective film. The anti-tear protective film comprises a protective film main body, a self-adhesive layer is arranged on the bottom surface of the protective film main body, a dustproof side protective film is adhered to the bottom surface of the self-adhesive layer, an end part tearing film is inserted into one end of the dustproof side protective film, and the top surface of the end part tearing film is adhered to the bottom surface of the protective film main body. An auxiliary tearing structure is adopted, when the protective film is torn, one end of the protective film body can be comprehensively separated from the dustproof side protective film in a mode that the end tearing film and the upper protective tearing film are clamped, tearing caused by tearing through the corner of the protective film body is avoided, and due to the tensile property of the linear low-density polyethylene tensile layer, the protective film can be easily torn off, and the service life of the protective film is prolonged. The tearing caused when the protective film is torn is reduced, the problem that the existing protective film is torn due to inconvenience in tearing and poor tensile property during use is solved, and the practicability of the protective film is greatly improved.

The present invention discloses a forklift active braking control method based on power shift transmission, comprising the following steps: step 1: obtaining forklift state parameters, if the current state of the forklift is an active braking state, performing step 2; step 2: inputting a current speed signal of the forklift, and obtaining duty ratio parameters that are impact-free and can produce a maximum braking force at the current speed, and outputting proportional solenoid valve control parameters of the transmission according to the obtained duty ratio parameters; step 3: using the proportional solenoid valve control parameters to control the proportional solenoid valve of the transmission to take action, and controlling the forklift power system to output a driving force opposite to a current movement direction of the forklift to drive the forklift to actively brake; step 4: exiting the active braking of the forklift when the forklift speed is detected to be zero. The active safe braking function is realized through clutch active braking, which can reduce the wear and tear of the original braking system of the vehicle and extend its service life. The vehicle clutch adopts a wet clutch, which has excellent heat dissipation effect, long service life and easy replacement.

The utility model relates to the technical field of weeding machine blade production, and discloses a weeding machine blade stamping die which comprises a mounting table, one side of the mounting table is fixedly connected with a supporting table, one side of the mounting table is provided with a stamping die body located above the supporting table, the top of the supporting table is fixedly connected with a supporting frame, and the top of the supporting frame is fixedly connected with a base. Discharging cavities which are uniformly distributed are formed in the bottom of the supporting frame; through mutual cooperation of the stamping die body, the supporting frame and the auxiliary assembly, a strip-shaped metal blank can be conveyed into the conveying cavity through conveying equipment, the strip-shaped metal blank is stamped in cooperation with the stamping die body, and tool stamping can be completed in four times in the process; the situation that tearing is caused by too large stamping pressure on metal blanks due to direct stamping forming is reduced, meanwhile, stamping of metal raw materials can be completed step by step in the conveying process, the continuous stamping effect is achieved, and the production efficiency is effectively improved.

The utility model relates to the technical field of oil and gas well fallen object milling, in particular to a glass fiber reinforced plastic oil pipe milling tool. The glass fiber reinforced plastic oil pipe milling tool comprises a milling shoe provided with a center water hole, a milling head is arranged at the lower end of the milling shoe, milling teeth are arranged on the milling head, and the milling teeth are distributed in a strip-shaped radiation block shape and are in inclined transition towards the center along the outer edge of the milling head. The milling teeth can be clamped on the outer edge of the port of the glass fiber reinforced plastic oil pipe when the glass fiber reinforced plastic oil pipe is milled, so that the port of the glass fiber reinforced plastic oil pipe shrinks towards the center to reduce tearing of the glass fiber reinforced plastic oil pipe, the glass fiber reinforced plastic oil pipe can be well broken and is not easy to deviate, and the problem that a drill is easy to block during milling is effectively avoided.

The utility model relates to an automatic stripping and collecting device for plastic paper on fiber cord fabric, and belongs to the field of tire production equipment. An unwinding shaft is fixed below the steel plate, a pneumatic brake is mounted on the unwinding shaft, a stripping device is mounted on the steel plate above the unwinding shaft, and an automatic wire arranging device and a plastic cloth liner collecting device are sequentially mounted on the steel plate on one side above the stripping device. The plastic cloth liner collecting device is composed of a plastic cloth liner collecting roller and a pneumatic motor driving the plastic cloth liner collecting roller to rotate, a guide roller, a guide cylinder way and an upper traction roller are sequentially installed on the steel plate on the other side above the stripping device, and the upper traction roller is driven by a variable-frequency gear motor. The collecting efficiency of the plastic paper cloth liner is greatly improved, the tearing phenomenon occurring in the winding process of the plastic paper cloth liner is reduced, operation is easy and convenient, and meanwhile the labor intensity of operators is reduced.

The application relates to a bamboo rotary cutting device, a supporting slide frame, a clamping frame arranged at one end of the supporting slide frame, a rotary cutting slide rail arranged at the upper portion of the supporting slide frame, a sliding cutter frame arranged on the rotary cutting slide rail at one side of the bottom of the clamping frame, a hinged cutter frame arranged in the sliding cutter frame, a rotary cutter horizontally arranged in the hinged cutter frame, a supporting slide rail hingedly arranged at one end of the bottom of the supporting slide frame close to the clamping frame, and a lifting rod arranged at the other end of the bottom of the supporting slide frame. The following technical effects can be achieved: the eccentric shaft frame and the cutter distance screw rod can be used in cooperation to finely adjust the vertical distance between the pressure ruler and the rotary cutter; the pushing screw rod can be used to horizontally adjust the horizontal position of the pressure ruler; the lifting rod can be used to adjust the angle of the supporting slide rail; the hinged cutter frame sliding on the supporting slide rail can be inclined according to the height of the supporting slide rail; the rotary cutter can always keep the optimal cutting angle with the surface of the wood, and the uneven thickness can be avoided.

The utility model relates to the technical field of electronic tags, and discloses a non-setting adhesive high-frequency RFID electronic tag, which comprises a winding drum and tag paper, the outer surface of the tag paper is provided with a segmentation groove, the surface of the tag paper is provided with an RFID electronic tag body in a bonding way, and one side of the RFID electronic tag body far away from the tag paper is provided with a protective layer. According to the non-setting adhesive high-frequency RFID electronic tag, the segmentation grooves are arranged into the same multiple groups and are distributed at equal intervals, so that a user can conveniently tear down a single RFID electronic tag body according to actual requirements, and the use convenience is improved; according to the RFID electronic tag, the groove wall of the dividing groove is arranged to be a 45-degree inclined plane, so that the RFID electronic tag body is stressed more uniformly in the tearing process, the probability that the RFID electronic tag body is torn or damaged is reduced, a user can tear the RFID electronic tag body from the tag paper conveniently through the design of the first easily-torn protruding block, the protective layer is removed through the second easily-torn protruding block, and the RFID electronic tag body is prevented from being damaged. And a plurality of easily-torn convex blocks II are arranged, so that the easily-torn convex blocks II can be prevented from being damaged to influence normal use.

The utility model relates to a double-end draw hook, which belongs to the technical field of medical instruments and comprises a handheld part, a first draw hook part and a second draw hook part are respectively arranged at two ends of the handheld part, the first draw hook part comprises a first U-shaped draw hook head, a first groove is arranged on the first U-shaped draw hook head, and the first groove is arranged along a U-shaped profile path of the first U-shaped draw hook head. An opening of the first groove is formed towards the peripheral side; the second draw hook part comprises a second U-shaped draw hook head, a second groove is formed in the second U-shaped draw hook head, the second groove is formed along the U-shaped outline path of the second U-shaped draw hook head, and an opening of the second groove is formed towards the peripheral side; wherein the size of the first U-shaped retractor head is larger than that of the second U-shaped retractor head, and the size of the first groove is larger than that of the second groove. According to the utility model, soft tissue wounds can be reduced, incision healing is facilitated, postoperative scars are reduced, and a better cosmetic effect can be obtained; and meanwhile, the device can be suitable for flap traction operations with different thicknesses and different traction depths, and is suitable for deep cavity construction operations.

The utility model relates to electronic tag technical field, especially a novel wireless radio frequency electronic tag, including electronic tag body and bracelet, the electronic tag body outside fixedly connected with two -dimensional code sticker, the electronic tag body left end middle part and right end middle part all have the arc slot, the electronic tag body left end upper portion and right end upper portion all fixedly connected with one extension wing, two the one extension wing far from the electronic tag body one end all are arc surface structure, the electronic tag body left end lower part and right end lower part all fixedly connected with two two extension wings. A novel wireless radio frequency electronic tag, through setting up the arc slot in electronic tag body left end middle part and right end middle part, when electronic tag body winding bracelet, the arc slot of electronic tag body left end and right end setting up will reduce the contact area of electronic tag body and bracelet, thereby reducing the tearing and pulling of electronic tag body.

The invention discloses a conveying device for quartz sand processing, and relates to the technical field of quartz sand processing and conveying, the conveying device for quartz sand processing comprises a spiral conveyor used for conveying quartz sand, the spiral conveyor comprises a machine body, the interior of the machine body is rotatably connected with a driving rod, and the driving rod is rotatably connected with the machine body. And a plurality of groups of spiral blades are arranged on the outer side of the driving rod. In the process that quartz sand is conveyed through rotation of the spiral blades, when part of foreign matter is mixed in the quartz sand and clamped between the spiral blades and the inner wall of the machine body, the two sets of spiral blades are driven to move away from each other in the axial direction of the driving rod through transmission, and therefore the quartz sand is conveyed; foreign matter abutting against the portion between the spiral blade and the inner wall of the machine body is separated under the action of axial friction force, the probability that the spiral blade is unsmooth in rotation and stuck in the conveying process is reduced, and the probability that the spiral blade is torn and damaged is further reduced.

The utility model provides a lip protection device in an intraoral approach operation, which comprises an adjusting arm and a lip nesting sleeve, the adjusting arm is connected with the lip nesting sleeve through a support, and the support is detachably matched with the lip nesting sleeve; the lip nest comprises an elastic layer for supporting the lip and a hydrocolloid dressing layer arranged between the elastic layer and the lip contact surface; the detachable elastic silica gel layer and the hydrocolloid dressing layer are arranged to replace a conventional metal lip nest, the comfort level of a user can be greatly improved, especially for the user needing to keep the mouth in an open state for a long time, the hydrocolloid dressing layer can keep the wettability of the contact face of the lip nest and the mouth for a long time, and the lip nesting effect is improved. The risk of soft tissue tearing and contusion is reduced; the support is detachably matched with the lip nesting sleeve, so that the elastic silica gel layer and the hydrocolloid dressing layer can be used as disposable materials, safety can be improved under the condition that sufficient disinfection conditions are not provided, and cross infection is avoided.

The utility model provides a tire mold. The tire mold includes: a first side mold assembly; the first side mold assembly and the second side mold assembly are oppositely arranged, and the first side mold assembly can move in the direction close to or away from the second side mold assembly and is provided with a first mold closing position and a first demolding position; the pattern block assembly is arranged between the first side mold assembly and the second side mold assembly, a vulcanization space is defined by the pattern block assembly, the first side mold assembly and the second side mold assembly, at least one part of the pattern block assembly is connected with the first side mold assembly, and at least the other part of the pattern block assembly is connected with the second side mold assembly; the pattern block assembly is provided with a second mold closing position and a second demolding position; when the first side mold assembly moves from the first mold closing position to the first demolding position, the pattern block assembly moves from the second mold closing position to the second demolding position. The tire mold solves the problem of poor use performance of the tire mold in the prior art.

The utility model relates to the technical field of cloth packaging, in particular to an extra-wide cloth packaging machine which comprises a bottom plate, a packaging mechanism arranged on the rear side of the bottom plate and a wrapping mechanism used for wrapping a whole roll of cloth, the wrapping mechanism is located on the front side of the bottom plate, and the wrapping mechanism comprises a wrapping structure and a feeding structure used for feeding the whole roll of cloth. A pressing structure used for wrapping the whole roll of cloth is arranged below the partition plate. The device has the beneficial effects that when the whole roll of cloth is wrapped by the wrapping structure, the upper side and the lower side of a packaging film are pressed forwards and flattened by the pressing structure when the whole roll of cloth is wrapped by the packaging film, so that the packaging film is tightened forwards, the packaging film is tightly attached to the surface of the whole roll of cloth, and a gap between the packaging film and the whole roll of cloth is reduced; and the whole roll of cloth is subjected to later fine packaging through the packaging mechanism, so that the fitting degree between the packaging film and the whole roll of cloth is improved, the packaging attractiveness is improved, and meanwhile, the phenomenon that the whole roll of cloth is torn during conveying is reduced.

This utility model provides a movable tire sipe mold, including a fixing component, which comprises an upper fixing component and a lower fixing component. The lower fixing component is fixedly installed at the bottom of the upper fixing component. Movable components are slidably connected to both sides of the fixing component. The movable components are used to slide downwards during demolding to reduce the width of the entire sipe mold. After the tire vulcanization is completed, when the mold needs to be pulled out, the movable components on the mold will smoothly slide downwards along the sliding surface of the lower fixing component under the action of extrusion and demolding forces when passing through the narrow section, thereby reducing the width of the original lower part of the mold. This improves the tearing of the tread block edges in the narrow grooves of the teardrop-shaped grooves during demolding, maintains the original design of the tire grooves, and improves the integrity of the tread blocks.

The invention provides a crystal ingot demolding method which specifically comprises the following steps: after crystal growth is finished, heating a plug, used for plugging a crystal ingot, at the end of a crucible in a crystal growth system, so that the plug is at least partially melted, a liquid sealing agent is released from a gap between the crucible and the plug, and the crystal ingot is further separated from the crucible. Before the crystal ingot is demoulded, the plug is locally heated to form the gap between the plug and the crucible so as to release the liquid sealing agent in advance, so that the phenomena of tearing of the tail part of the crystal ingot and tearing of the inner wall of the crucible are greatly reduced during demoulding of the crystal ingot, and meanwhile, the amount of the liquid sealing agent in a crystal growth system is reduced, so that the demoulding time can be shortened, and the production efficiency is improved. The crystal demolding efficiency is improved.

The utility model relates to the technical field of medical instruments, in particular to a disposable ophthalmology cannula puncture knife, which is characterized in that a handle is provided with a sleeve type main body, the front end of the sleeve type main body of the handle is provided with a puncture knife outlet, the rear end of the sleeve type main body is provided with a guide groove, and the puncture knife is arranged in the sleeve type main body of the handle. The puncture knife is provided with at least two locking parts matched with the handle, and when the puncture knife is pushed along the guide groove to enable a knife head of the puncture knife to stretch out along the puncture knife outlet, the first locking part on the puncture knife abuts against and is locked with the limiting part in the handle sleeve type body. The puncture knife is pulled in the direction away from the puncture knife outlet along the guide groove until the knife head of the puncture knife is retracted into the handle sleeve type main body, and a second locking part on the puncture knife abuts against and is locked with a limiting part in the handle sleeve type main body; compared with the prior art, the sealing performance is good, operation is convenient, safety performance is good, and transportation is convenient.

The utility model discloses a hydrophobic double-circle ring target-shaped implant for treating corneal edema, which relates to the technical field of ophthalmology, and comprises a hydrophobic implant, an inner piece is arranged on the hydrophobic implant, an outer piece is arranged outside the inner piece, and the outer piece is arranged outside the outer piece. At least two oxygen permeation holes are formed in the outer piece, the diameter of the inner piece ranges from 5.5 mm to 7 mm, and the diameter of the outer piece ranges from 8 mm to 9.5 mm. The outer piece is additionally arranged on the periphery of the inner piece, so that the area of the hydrophobic implant is enlarged, the target-shaped implant is formed, the cornea inner skin surface or the cornea interlayer matrix surface is covered as much as possible, the water blocking area is enlarged, cornea epithelium blisters in the peripheral area are eliminated, and discomfort such as eye grind is avoided; water permeation and oxygen permeation are carried out to ensure that nutrient substances enter the cornea and avoid corneal tissue hypoxia necrosis, and in order to ensure the stability of the hydrophobic implant in the implanting process, the edge of the oxygen permeation hole is in a round and blunt shape.