11results about How to "Won't scratch" patented technology

The utility model discloses a change-over switch convenient to disassemble, and relates to the technical field of electrical equipment. The lettering device comprises a mounting panel and a lettering panel, the lettering panel is clamped in the mounting panel, a positioning cylinder is arranged at the center position in the mounting panel, self-locking buckles are oppositely arranged on the positioning cylinder, a positioning round hole is formed in the position, corresponding to the positioning cylinder, of the lettering panel, clamping lock catches are oppositely arranged on the side wall of an inner ring of the positioning round hole, and the self-locking buckles are clamped in the clamping lock catches. The position of the clamping lock catch corresponds to the position of the self-locking buckle, and after the printing panel is clamped on the mounting panel, the self-locking buckle is correspondingly clamped on the clamping lock catch. In the process of installing the lettering panel, when the self-locking buckle of the installing panel is in contact with the central circular hole structure of the lettering panel, the self-locking buckle can elastically deform inwards due to extrusion. The device is reliable in connection, convenient to mount and dismount, high in maintenance efficiency and capable of protecting the appearance of the lettering panel, and has remarkable practicability.

This utility model belongs to the technical field of granite processing equipment, specifically a granite surface cleaning structure, including a cleaning seat; a pair of upright plates are fixed in the middle of the side wall of the cleaning seat; the pair of upright plates are symmetrically arranged on both sides of the cleaning seat; a liquid outlet component is provided in the middle of the side wall of one of the upright plates, which can spray cleaning liquid onto the granite surface in a rotating manner; a top plate is fixed to the top of the upright plate; an electric push rod is mounted on the top of the top plate; a movable shaft is fixed to the output end of the electric push rod; the cleaning component can rotate multiple sponges to clean the granite surface, so that the sponges cover all corners and edges of the granite surface, including hard-to-reach crevices and grooves, reducing the problem of incomplete local cleaning, and the soft sponges will not scratch the granite surface, reducing scratches or damage caused by overly hard cleaning tools, effectively removing stains without damaging the natural texture and luster of the granite.

The application discloses a cleaning tool for a rubber sleeve for fine tungsten rod pressing, which comprises a scraping assembly, the scraping assembly comprises a cleaning cap, the cleaning cap is a conical frustum structure, the axis of the cleaning cap is parallel to a first direction, the diameter of the top of the cleaning cap is smaller than the diameter of the bottom, and a first through hole is formed through the cleaning cap; a negative pressure assembly is in communication with the first through hole and is used for providing a negative pressure suction force; in use, one end of the rubber sleeve is sleeved on the cleaning cap, then the rubber sleeve is moved along the first direction, so that the cleaning cap moves inside the rubber sleeve until the cleaning cap moves to the other end of the rubber sleeve, at this time, the residues adhered to the inner wall of the rubber sleeve are scraped for the first time and accumulated above the cleaning cap, the accumulated residues can be removed through the negative pressure assembly, then the rubber sleeve is reversely moved, since the cleaning cap is attached to the inner wall of the rubber sleeve, the residues adhered to the inner wall of the rubber sleeve can be scraped by the bottom edge of the cleaning cap during the reverse movement of the rubber sleeve, manpower is saved, efficiency is improved, and the rubber sleeve is not scratched.

The application provides a chamfering tool and chamfering device for a spherical optical element, comprising: a grinding element, the grinding element having a grinding surface, the grinding element surrounding a clearance cavity, and the edge of the grinding surface surrounding an opening of the clearance cavity; a limiting element, the limiting element being arranged on the grinding element, a side surface of the limiting element and the grinding surface surrounding a limiting cavity, the limiting cavity being used for accommodating the spherical optical element, and the lower arc surface of the spherical optical element abutting against the grinding surface. The problem that the spherical optical element with a large concave radius is prone to scratching the polishing surface during the chamfering process on the plane grinding tool is solved.

The application discloses a display backboard and a manufacturing method thereof, and comprises the following steps: providing an epitaxial bonding substrate, the epitaxial bonding substrate comprises a substrate and a film layer structure which are sequentially stacked, and the film layer structure comprises a bonding layer, an epitaxial layer and an ohmic contact layer which are sequentially stacked on the substrate; forming a metal layer on a surface of the ohmic contact layer, etching the metal layer to form a plurality of sub-metal layers; forming a transparent protective layer to cover the sub-metal layers and the ohmic contact layer; performing isolation groove etching on a surrounding area of the sub-metal layers to obtain a plurality of LED step structures, the LED step structure comprises a sub-epitaxial layer, a sub-ohmic contact layer, a sub-metal layer and a sub-transparent protective layer which are sequentially stacked; forming a passivation layer to cover an outer wall of the LED step structure and a groove bottom of the isolation groove, and opening a via hole in the passivation layer above each sub-transparent protective layer to expose the sub-transparent protective layer; and forming a common electrode layer to cover the passivation layer and the sub-transparent protective layer in the via hole. The method can effectively prevent the voltage abnormality caused by the etching of the inner side of the ohmic contact layer and the etching damage of the metal layer.

This utility model discloses a metal-oxide-semiconductor field-effect transistor (MOSFET) pin forming device, including a MOSFET placement stage, a pin board, a limiting plate, and a forming plate. The upper surface of the MOSFET placement stage holds the lower surface of the MOSFET, and the MOSFET placement stage and the side of the MOSFET are in contact, so that the root position of the MOSFET pin is flush with the side of the pin board, ensuring that the starting position of the MOSFET pin forming remains unchanged and improving the pin forming accuracy. The forming plate has a rounded chamfer on the lower side of one side and a right angle on the upper side of one side, and the forming plate can rotate within 90°, ensuring that the MOSFET can be placed in when the forming plate is horizontal and removed when the forming plate is vertical. This allows for the rapid forming of multiple MOSFET pins from a horizontal to a vertical state simultaneously, simplifying the operation and improving the pin forming efficiency of the MOSFET.

The utility model discloses a technical scheme is a kind of oil control valve head filter screen subassembly's dismantling device, including workbench, fixed seat, first control valve and second control valve are connected on the workbench, oil control valve is installed fixedly by fixed seat, sliding cylinder is connected on the workbench of fixed seat rear side, sliding cylinder is connected to first control valve by air pipe and carries out reversing control, sliding cylinder top is connected with sliding block, the cylinder rod connection of sliding block and sliding cylinder, clamping cylinder is connected in sliding block top, clamping cylinder front side left and right two ends are connected with clamping block respectively, the inside of clamping block is provided with blade, clamping cylinder is connected to second control valve by air pipe and carries out reversing control. The utility model novel structure, it is easy to use, and dismantling efficiency is high, and valve body will not be scratched in dismantling process, safe and reliable.

This invention relates to the field of vacuum material conveying technology and discloses a vacuum material conveying device for continuous caramel production, comprising: an inner tube, an outer tube installed on the outer wall of the inner tube, and a cavity in the middle of the inner and outer tubes; further comprising: multiple cooling plates, the multiple cooling plates being symmetrically and equidistantly attached to the outer wall of the inner tube; a pushing part and a driving part are installed inside the cavity, the driving part being used to drive the pushing part to operate; two through holes are symmetrically opened on the inner wall of the inner tube; and a sealed chamber one and a sealed chamber two are respectively installed on the inner wall of the outer tube at positions corresponding to the two through holes; by setting up the cooling plates, the pushing part, and the driving part in cooperation, automatic coagulation and peeling of caramel can be achieved, which can replace manual scraping and high-pressure water washing cleaning methods, cleaning thoroughly without residue, and will not scratch the inner wall of the inner tube, maintaining the smoothness of the tube wall, effectively avoiding the problem of subsequent caramel adhesion and blockage caused by tube wall damage.

This invention relates to a device and method for testing the airtightness of airbags in air-shield dams, belonging to the field of airtightness testing technology. It includes a main body, an airbag disposed between clamping plates, an injection pipe on one side of the main body, an air outlet on one side of the airbag, a locking assembly between the injection pipe and the air outlet, a stirring assembly inside the injection pipe, and a clamping assembly on one side of the lead screw. This invention achieves automatic opening of the air passage during docking and bidirectional automatic sealing during separation through plug-in self-sealing, preventing gas leakage and blocking impurities such as water vapor and dust from entering the air passage and the airbag interior. Combined with a mechanical locking structure using inclined plane transmission, it can resist the impact of inflation pressure and the tensile force generated by airbag deformation, ensuring that the interface remains secure and does not detach throughout the process. This eliminates external leakage not caused by the airbag itself, ensuring that the test results accurately reflect the airbag's sealing state and significantly reducing the probability of misjudgment.

This utility model discloses a non-woven fabric storage box for jewelry, comprising: a guide assembly located inside the main body of the storage box lid; the guide assembly includes a fixed post, a transparent plate, a hook, a fixed frame, and a rotating post. Through this guide assembly, when jewelry needs to be worn, the main body of the storage box is first opened, a downward pulling force is applied to the guide buckle, causing the two sets of magnets to separate; a rotational force is then applied to the rotating post, causing it to rotate 90 degrees; a pulling force is applied to the hook, removing the transparent plate from the outside of the rotating post and the fixed post; the transparent plate is placed in the desired position; the desired jewelry is then hung on the hook; and the jewelry can then be selected. This solution arranges the necklaces and bracelets to be selected, helping users quickly find suitable jewelry and reducing the effort required from the user.