128 results about "Luting agent" patented technology

The invention provides a front-end component, an insertion part, an endoscope and a front-end component assembling method, relates to the technical field of endoscopes, and solves the problem that in the prior art, a front-end component is prone to water seepage in a dispensing process. The receiving piece is provided with a mounting hole penetrating from the near end to the far end, and the receiving piece is provided with a mounting area on the side of the mounting hole; the instrument tube extends from the near end to the far end and comprises a first tube and a second tube in butt joint with the far end face of the first tube, at least part of the tube section of the second tube is arranged in the mounting hole in a penetrating mode, and an annulus is formed between the second tube and the mounting hole; wherein the first tube has a lower friction coefficient and lower surface energy than the second tube; the adhesive is filled in the annular space so as to adhere and fix the second pipe and the mounting hole and block the annular space so that the liquid can be prevented from leaking to the near end through the annular space. According to the invention, the instrument tube is formed by the tubes with different bonding properties, so that the tube with better bonding property and the receiving piece are bonded and fixed through the bonding agent and the annular space is blocked, and a stable sealing structure can be formed.

The invention discloses a ring pull type sealing gasket. The ring pull type sealing gasket comprises a functional layer and a bonding layer, one of the functional layer and the bonding layer is provided with an electromagnetic induction heating sheet, and the bonding layer is provided with an adhesive sealing layer located on the lowest side; the bottom surface of the functional layer and the top surface of the bonding layer are strongly bonded and compounded through an adhesive, and one of the bottom surface of the functional layer and the top surface of the bonding layer is directly coated with a release block formed by a release coating; the functional layer is provided with an annular tearing line, the annular tearing line divides the functional layer into an outer ring area and an inner ring area, and the inner ring area comprises a lifting neck part connected with the outer ring area, a lifting part connected with the lifting neck part and a hollow area located between the lifting part and the lifting neck part; the release block is opposite to the lifting part; and the functional layer is also provided with a joint tearing line which is connected with one side of the lifting part and the annular tearing line. The sealing structure has the advantages of being convenient to open and good in sealing effect when being pressed and sealed again.

A dental adhesive material kit may have desirable adhesive properties for tooth structure, and, while ensuring appropriate strength, may allow easy removal of excess cement in a semi-cured state created by temporarily applying light to excess portions of cement with a photoirradiator. Such a dental adhesive material kit may include a dental aqueous adhesive composition (A) and a dental curable composition (B), satisfying the inequality (I)0≤t2−t1≤3.0  (I),wherein t1 (min) is a contactual polymerization start time of the dental aqueous adhesive composition (A) and the dental curable composition (B), and t2 (min) is a polymerization start time of the dental curable composition (B).

The invention relates to a light-cured dental resin adhesive containing a silane coupling agent modified monomer as well as preparation and application of the light-cured dental resin adhesive. The dental resin adhesive comprises a resin matrix, an organic polymer and a photoinitiator, wherein the resin matrix consists of methacrylate resin grafted and modified by a silane coupling agent and unmodified methacrylate resin. According to the method, the isocyano group of the silane coupling agent is selected to react with the hydroxyl group on the resin monomer to generate the silane modified grafted resin monomer, and the method is simple, low in equipment requirement and suitable for large-scale production; the obtained dental resin adhesive can be internally covalently cross-linked to enhance the self mechanical property, can also be chemically bonded with a bonding substrate by utilizing a grafted silane coupling agent to improve the interface bonding strength, is especially suitable for being used as an enamel bonding material, and can remarkably improve the service life and the curative effect of a bonded restoration.

The present disclosure discloses a detector comprising: an upper housing, the edge of which comprises an upper flange protruding downward; the edge of the lower shell comprises a lower flange protruding upwards, the upper flange and the lower flange are buckled, a glue containing space is formed between the upper flange and the lower shell, and the glue containing space is filled with a sealing adhesive; and the electronic component is arranged between the upper shell and the lower shell. According to the detector, the upper flange and the lower flange which are buckled with each other are arranged, and the glue containing space filled with the sealing adhesive is reserved between the upper flange and the lower shell, so that the waterproof performance of the detector can be enhanced.

The invention discloses a lifting type sealing gasket. The lifting type sealing gasket comprises a functional layer and a bonding layer, one of the functional layer and the bonding layer is provided with an electromagnetic induction heating sheet, and the bonding layer is provided with an adhesive sealing layer; the bottom surface of the functional layer and the top surface of the bonding layer are strongly bonded and compounded through an adhesive, and one of the bottom surface of the functional layer and the top surface of the bonding layer is directly coated with a release block formed by a release coating; the functional layer is provided with a hollow area, a primary tearing area and a re-pressing sealing area, the primary tearing area is provided with a lifting part and a lifting neck part which are connected, the hollow area is adjacent to the lifting part, the re-pressing sealing area surrounds the hollow area and the primary tearing area, and the edge of the primary tearing area is provided with a primary tearing line. The sealing structure has the advantages of being convenient to open and good in sealing effect when being pressed and sealed again.

The invention discloses a detachable cofferdam and an encapsulating method, and aims to solve the technical problem that the space utilization rate of a base plate is reduced due to the fact that a cofferdam structure cannot be detached after the cofferdam is encapsulated in the prior art. A removable cofferdam includes a cofferdam frame and a dissolvable adhesive, allowing easy removal after completion of the encapsulation process, reducing damage to the substrate and encapsulation material. The encapsulating method comprises the following steps: coating a release agent on the surface of the cofferdam frame, bonding the cofferdam by using a dissolvable adhesive, disassembling the cofferdam frame after encapsulating, and cleaning the adhesive. The invention provides a simple and effective method for removing the cofferdam frame after encapsulation, and the surface of the treated substrate has no bonding residue and no redundant space occupation.

The invention relates to the technical field of children oral medicine and digital oral cavity restoration, and discloses a preparation method of a 3D printed ceramic resin gap retainer, which comprises the following steps: scanning the oral cavity of a child patient at a speed of 15-20 frames per second by using an oral cavity digital impression instrument, obtaining an intraoral three-dimensional digital model containing an odontoprisis space and adjacent abutment teeth, and generating an STL file; the STL file is imported into Exocad Dental CAD software, an adhesive space of 0.1-0.2 mm is reserved for filling an undercut, and a bridge body structure is designed after an in-position track is determined; photocuring ceramic resin is selected, and printing is conducted in a curing printer with a 405 nm light source, the exposure time of 2.5-3.5 s / layer and the layer thickness of 0.05 mm. The preparation method of the 3D printed ceramic resin gap retainer aims to solve the problems that in the traditional gap retainer manufacturing process, a child patient fetches a mold uncomfortably, and a finished belt ring is poor in fitting degree and large in error.

The invention relates to a developer carrier and a method for manufacturing the same. The developer carrier includes a shaft, a magnet, a sleeve, a flange, and an adhesive, the flange includes a first fitting portion, a second fitting portion, and a groove portion, the adhesive is disposed in the groove portion, and the first groove portion, the second groove portion, and the third groove portion are continuously formed in this order from the first fitting portion side toward the second fitting portion side. The height from the bottom surface of the second groove portion to the outer peripheral surface of the first fitting portion is higher than the height from the bottom surface of the first groove portion to the outer peripheral surface of the first fitting portion, and the height from the bottom surface of the third groove portion to the outer peripheral surface of the first fitting portion is lower than the height from the bottom surface of the second groove portion to the outer peripheral surface of the first fitting portion. The height from the bottom surface of the first groove portion to the outer peripheral surface of the first fitting portion is equal to or higher than the height from the bottom surface of the first groove portion to the outer peripheral surface of the first fitting portion.

The present invention provides a front end component, an insertion portion, an endoscope, and a front end component assembly method, which relates to the field of endoscope technology and solves the problem of water seepage in the front end component under the glue dispensing process in the prior art. The receiving part of the present invention is provided with a mounting hole that passes through from the proximal end to the distal end, and the receiving part is provided with a mounting area on the side of the mounting hole; the instrument tube extends from the proximal end to the distal end, and includes a first tube and a second tube that is connected to the distal end of the first tube, and at least part of the second tube section is passed through the mounting hole and forms an annulus between it and the mounting hole; wherein, the first tube has a lower friction coefficient and a lower surface energy than the second tube; the adhesive is filled in the annulus to bond and fix the second tube and the mounting hole, and to seal the annulus to prevent liquid from leaking to the proximal end through the annulus. The present invention uses tubes with different adhesive properties to form the instrument tube, so that the tube with better adhesiveness is bonded and fixed to the receiving part by the adhesive and the annulus is sealed, so as to form a stable sealing structure.

The utility model discloses an orthodontic bracket. The orthodontic bracket comprises a bracket body, a bracket bottom and an arch wire, the bracket body comprises a groove. And the bracket bottom is connected with the bracket body. And the arch wire is arranged in the groove. The bracket body comprises a bracket wing, the bracket wing is connected with the groove, a projection plane perpendicular to the width direction of the orthodontic bracket is defined, and an included angle between the lowest part of the bracket bottom and the lowest part of the bracket wing is greater than or equal to 2 degrees and less than or equal to 8 degrees. Through the arrangement, an operator can quickly remove redundant adhesive, so that the bonding efficiency of the orthodontic bracket and teeth is improved.

The viscosity testing machine comprises a machine base, a first adhesive part and a second adhesive part, an erasing part used for cleaning the first adhesive part and the second adhesive part is arranged at the top of the machine base, and a collecting part is arranged on the front face of the machine base. The erasing part comprises a vertical plate, two sliding grooves formed in one side of the vertical plate, sliding blocks arranged in the sliding grooves, a two-way screw rod connected with the sliding blocks, a motor fixedly connected with the top of the two-way screw rod, and a transverse plate fixedly connected with one side of each sliding block. The problems that when an existing viscosity testing machine is used, although a viscosity test can be conducted on an adhesive, the adhesive can be left on a first adhesive part and a second adhesive part after the test is completed, and a direct replacement mode is adopted, so that resource waste is easily caused, the use cost is increased, and the practicability is reduced are solved.

The invention relates to the field of dental restoration, in particular to a redundant adhesive removing device which comprises a body, a first guide component, a second guide component and a cleaning line. A driving mechanism is arranged in the body, and the first guiding component and the second guiding component are installed on the body and extend out in the direction away from the body. The cleaning wire is connected to the driving mechanism through a first guide part and a second guide part and is in a tensioning state between the two guide parts; the driving mechanism drives the cleaning line to move at the tooth root sleeving the target tooth, so that the adhesive on the surface of the target tooth is removed. When cleaning work is carried out, the cleaning line driven by the driving mechanism rubs on the surfaces of the teeth, so that redundant adhesive attached to the surfaces of the teeth is separated from the teeth. Particularly, when the adhesive is attached to some dead corners, the defects that the hand control range is small, and the applied external force is insufficient can be overcome.

The invention relates to the field of fracture prevention of 3D printing sand cores, in particular to a method for preventing a superfine 3D printing sand core from being fractured. In order to solve the problems that in the prior art, the strength is increased in the mode that a core bar penetrates through a sand core, but a gap between the core bar and the sand core cannot be effectively eliminated, and the fracture trend of the 3D printing sand core is increased, the invention provides the anti-fracture method for the superfine 3D printing sand core. The special core bar has the following beneficial effects in the aspect of solving the problem of breakage of a sand core with a superfine structure: after a casting is knocked out, the core bar is naturally separated and can be recycled and reused; the core bar blank is convenient to obtain and simple to process, and the cost is effectively saved. The special core bar is high in practicability, and sand cores with similar structures can be flexibly adjusted and used; bonding agents are filled inside and outside the special core bar to be seamlessly connected with the sand core, and the strength of the sand core is improved through overall hardening.

Provided is a guide wire having tip end flexibility. A guide wire 1 according to this disclosure comprises: a core shaft 9; a coil body 3 covering a tip end part of the core shaft 9; a tip end connection part 2 connecting the tip end of the coil body 3 and the tip end of the core shaft 9; and a base end connection part 5 connecting the base end of the coil body 3 and the core shaft 9, and including an adhesive made of a resin material.

The present invention belongs to the technical field of research, development and testing of aircraft engines, and particularly relates to a tooth root patch mold, a method for making the same, and a method for installing a strain gauge. By using a tooth root patch mold to replace tape and rubber, the proposed tooth root patch mold has consistency. The small recessed cavity at the bottom of the tooth root patch mold formed after removing the small-sized strain gauge has the function of fixing the small-sized strain gauge, accurately positioning the strain gauge and well controlling the thickness after bonding. It can ensure that the position and final thickness of the strain gauge remain consistent during multiple pasting processes, and can solve problems such as uneven adhesive layer and excessive thickness leading to failure caused by pressurizing the strain gauge. The tooth root patch mold adopts a process of curing and molding from the outside to the inside, which can effectively avoid problems such as stress concentration in the mold corners and size reduction caused by volume shrinkage during the curing of the photosensitive resin. A loading rod is provided in the mold, which can be used to apply pressure for a long time for the adhesive to be heated and pressurized for curing.

The utility model relates to the technical field of adhesives, and discloses an adhesive supply device which comprises stirring rods which are circumferentially and symmetrically arranged on the left side wall of a turntable; the sliding rod is slidably connected to the right side wall of the storage barrel, and the left end of the sliding rod penetrates and extends into the storage barrel; the scraping plate is slidably connected to the left end of the sliding rod, and the scraping plate is slidably connected with the inner wall of the storage barrel; and the driving mechanism is arranged on the storage barrel and the sliding rod. After stirring is completed, a power source of a second motor is started, the second motor drives a gear to rotate, a linkage sliding rod pushes a scraping plate to move towards a discharging port, and when the scraping plate moves, the adhesive is pushed to be output from the discharging port in the left side. And the adhesive on the inner wall of the storage barrel is scraped towards the left side, so that the adhesive can be completely output from the discharging opening, and the situation that the adhesive is adhered to the inner wall of the storage barrel due to high viscosity and is inconvenient to clean by workers is avoided.

The utility model discloses a runner, core box and loose piece integrated device, and belongs to the technical field of casting. A runner core box loose piece integrated device comprises a loose piece set, the two sides of the back of the loose piece set are convex faces, the convex faces are dovetail type convex faces, the convex faces and the loose piece set are integrally formed, the loose piece set comprises a loose piece I and a loose piece II, the bottom of the loose piece I is connected with the top of the loose piece II through an adhesive, and the bottom of the loose piece I is connected with the top of the loose piece II through the adhesive. And the back surface of the loose piece group is connected with the runner core box mold in an embedded manner. According to the utility model, the movable block I and the movable block II are firstly assembled and then are embedded into the runner core box mold for curing, so that the movable blocks are convenient to mount, the mounting efficiency of the movable blocks is improved, the positioning effect is good, the positions of the sand core movable blocks are not staggered, and the defects of loose positions, missing blocks and the like are greatly improved.

A wind power blade web hand lay-up auxiliary flange positioning tool comprises an L-shaped main body structure formed by welding a side arm, a bonding base and a supporting plate. The side arm is a metal tubular component, the top of the supporting plate (3) is provided with a pre-bent arc-shaped structure, the bonding base is fixed to the inner skin of the blade through a bonding agent, and an operable gap with the width larger than or equal to 70 mm and the height larger than or equal to 140 mm is formed between the supporting plate and the outer surface of the web. The gap allows the scraper blade to go deep into a finishing glue layer and guarantees continuous glass fabric laying operation of the auxiliary flange. Through the operable gap design, the glass fiber fault defect caused by a traditional D-shaped positioning block is thoroughly eliminated, and the interlayer bubble rate is reduced by 83%; and in cooperation with an AB glue rapid bonding system (the curing time is less than or equal to 10 minutes), the working time of a single blade is saved by more than or equal to 200 minutes, the repair cost is reduced by 62%, and the percent of pass is increased to 95% or above. The tool is compatible with the combined application of the D-shaped positioning block, the application range is expanded by 40%, and the chordwise positioning precision is controlled within + / -1.5 mm.

The utility model belongs to the technical field of pipe bonding, and discloses a bonding device for antibacterial PPR pipe production, which comprises a fixed pipe table and a movable pipe table, the movable pipe table is arranged on one side of the fixed pipe table, and a group of pipe supporting components are respectively arranged above the fixed pipe table and the movable pipe table; compared with the prior art, the utility model has the following beneficial effects: by designing the pipe supporting component, the pipe can be stably supported in the pipe bonding process, so that the pipe is not easy to droop, the adhesive is uniformly and flatly distributed at the connecting part of the pipe, the bonding effect is greatly improved, and the service life of the pipe is prolonged. In consideration of different lengths of pipes in practical application, an adjustable design is adopted, and an operator can quickly adjust the supporting positions of the two groups of vertical frames according to the specific lengths of the pipes through a convenient adjusting mechanism. And pipes with different lengths can be flexibly matched, the application range is expanded, and diversified use requirements are met.

The invention provides a fillet forming die and a bonding method. The fillet forming die is a technology for forming a fillet with reduced deviation. The rounded corner forming die is provided with a rounded corner forming surface disposed so as to abut against a first member, and the rounded corner forming surface has a curved surface for forming a rounded corner of an adhesive at a corner formed by the first member and a second member bonded to the first member by the adhesive.

The invention provides a shoulder collar lining connecting tool assembly. The shoulder collar lining connecting tool assembly comprises a workbench, a fixing assembly, an adhesive assembly and an ironing assembly. The upper surface of the workbench has a processing surface; the fixing assembly comprises a fixing plate and a positioning plate, the fixing plate and the positioning plate are rotationally arranged on the two sides of the machining face respectively, the fixing plate and the machining face are matched to clamp fabric, the fixing plate is provided with a glue hole extending along a glue dripping track, the positioning plate is provided with a positioning hole for containing a lining, and the lining is arranged in the positioning hole. The fixing plate and the positioning plate are alternately attached to the machining face up and down. The adhesive assembly is used for arranging an adhesive in the adhesive hole; the ironing assembly is used for ironing the lining and the fabric. According to the shoulder collar lining connecting tool assembly, a worker only needs to operate the steps of rotating the fixing plate, starting mucilage glue, rotating the positioning plate and starting ironing, the technical requirement is lowered, and the machining quality is improved.

The invention discloses a pole piece stripping device and a method for measuring the floating amount of an adhesive in an active material layer of the pole piece stripping device, the pole piece stripping device comprises a first sealing cavity, a fixing table, a spray head, a second sealing cavity and a heating and weighing component, the fixing table is arranged in the first sealing cavity, the spray head is arranged in the first sealing cavity, and the heating and weighing component is arranged in the second sealing cavity. The second sealing cavity is communicated with the first sealing cavity, or the second sealing cavity is separated from the first sealing cavity, and the heating and weighing component is arranged in the second sealing cavity. According to the scheme provided by the invention, the angle of the pole piece on the fixed table is adjusted by adjusting the angle of the spray head, the spraying speed and the aperture size of the nozzle and adjusting the angle of the fixed table in the first sealing cavity, so that the height and depth of the spray head sprayed on the pole piece can be accurately controlled, and the volume of powder on the pole piece can be accurately stripped.

A centrifugal fan (1) includes a first portion (9) provided on a rotor (5) and a second portion provided on a fan portion (3), wherein the second portion has a larger linear expansion coefficient than the first portion (9). The first portion (9) includes a top portion (22) and a first cylindrical portion (23), wherein the top portion (22) includes a plane (22a). The second portion includes: a main portion (34) located closer to the first axial direction (C1) than the top portion (22); a second cylindrical portion (35) including an inner cylindrical surface (35f) opposed to the outer cylindrical surface (23f) of the first cylindrical portion (23) with a gap (S); and an annular rib (38) and a plurality of auxiliary ribs (39) protruding from the main portion (34) toward the second axial direction (C2). Adhesive portions (40) formed of an adhesive are provided between the annular end surface (38a) of the annular rib (38) facing the plane (22a) and the plane (22a), and between the end surfaces (39a) of the plurality of auxiliary ribs (39) and the plane (22a).

This invention relates to an actuator, a pump, and a method for manufacturing an actuator. The actuator (11) comprises a vibrating component (21), a frame (23), and an adhesive (241). The vibrating component (21) has a main surface (F211) and a main surface (F212), and a piezoelectric element (30) is mounted on the main surface (F211). The vibrating component (21) is plate-shaped and has an outer edge (212) that, when viewed from above, is larger than the piezoelectric element (30) and does not abut against the piezoelectric element (30). The outer edge of the frame (23) is smaller than the vibrating component (21). The adhesive (241) bonds the main surface (F212) at the outer edge (212) of the vibrating component (21) to the frame (23). When viewed from above, the outer edge of the frame (23) is smaller than the outer edge (212) of the vibrating component (21). The frame (23) has a protrusion (239) that protrudes partially from the outer edge to the outer side.

This invention provides an adhesive bonding device, comprising a conveying assembly for conveying a first clamp and a sample, the first clamp having an end to be coated; a first dispensing assembly disposed on one side of the conveying assembly for dispensing adhesive onto the end to be coated; a transfer assembly disposed on one side of the conveying assembly for transferring the sample to the end to be coated; a second dispensing assembly disposed on one side of the conveying assembly for dispensing adhesive onto the end of the sample away from the first clamp, thus making that end of the sample away from the first clamp the bonding end; and a release assembly disposed on one side of the conveying assembly, comprising a receiving structure and a release structure, the receiving structure having a receiving cavity and a release port communicating with each other, the receiving cavity for receiving a second clamp, and the release structure for placing the second clamp onto the bonding end through the release port. This invention effectively solves the problem of low efficiency in the prior art for workers bonding rubber samples.

The utility model discloses a transverse deformation testing device for an adhesive, which relates to the technical field of deformation testing and comprises a main body, the upper end of the main body is fixedly connected with a supporting table, the upper end of the supporting table is provided with a testing mold, and the upper end of the main body is fixedly connected with a fixing part of an electric telescopic rod. One end of a movable part of the electric telescopic rod is fixedly connected with a tension meter, and a connecting plate is arranged on one side of the tension meter. According to the utility model, the electric telescopic rod and the tension meter are arranged to enable the connecting plate to move and test tension, the first adjusting screw rod, the movable block and the movable groove are arranged to drive the clamping plate to move and cooperate with the supporting plate to clamp a test mold, and the limiting rod and the limiting hole are arranged to fix the test mold, so that the test mold is fixed. And sliding between the test mold and the clamping structure is prevented, and the position height of the clamping structure is adjusted by arranging a sliding groove, a sliding block, an extension groove and an extension plate.

This invention belongs to the field of medical materials, specifically relating to a patterned bio-barrier membrane with self-adhesive function and its preparation method. The preparation method includes: dissolving the adhesive matrix in a buffer solution, then adding reactive amino acids and a stabilizer to obtain a first mixture; adding ethanol and a hydrophobic agent to the first mixture, and stirring under heating conditions to obtain a second mixture; adding a thickener, a calcium supplement, and a reinforcing agent to the second mixture, continuing stirring, and then adding a protein precipitation reagent to precipitate the mixture, obtaining a hydrogel; covering a collagen membrane with a patterned porous mold, and adding the hydrogel to allow it to flow into the pores and solidify. This invention achieves precise adhesive loading through patterned design, combining advantages such as simple operation, reliable fixation, good biocompatibility, and high osteogenic efficiency, effectively solving the barrier membrane fixation problem in GBR technology, and is suitable for bone defect treatment in dental implant prosthesis restoration.

The utility model relates to the technical field of medical tools, and specifically to a reel assembly and an abdominal puncture device using the assembly, comprising a disk-shaped reel body, a winding groove is provided in a recessed manner around the side of the reel body, a winding column is provided in a protruding manner at the bottom of the winding groove, an elastic groove is provided in a recessed manner on one side of the reel body, a first rotating shaft is provided in a protruding manner at the middle of the bottom of the elastic groove, a fixing column is provided in a protruding manner at the bottom of the elastic groove, a torsion spring is installed in the elastic groove, one end of the torsion spring is connected to the winding column, and the other end extends out of the elastic groove. The utility model solves the problem that in the prior art, the reel is fixed by bonding, and after the processing is completed, it is necessary to wait for the adhesive to solidify before continuing the subsequent processing, which prolongs the processing time of a single process.

The utility model relates to the technical field of heat exchangers, in particular to a novel flexible graphite corrugated tooth composite gasket, which is formed by machining upper corrugated teeth on the upper surface and the lower surface of a planar steel plate or steel belt respectively. Graphite is adhered to the upper surface and the lower surface of the gasket through an adhesive, so that a graphite layer is formed on each of the upper surface and the lower surface of the gasket; a parting strip assembly is further arranged on the inner side of the gasket. When the corrugated tooth gasket is used, the compression ratio of the corrugated tooth gasket can be provided through the graphite layer, the rebound rate of the corrugated tooth gasket can be guaranteed through the gasket metal framework, the gasket can keep strong sealing, and it can be guaranteed that the sealing effect is not affected under the condition of pressure and temperature fluctuation.