11results about How to "Avoid undercut" patented technology

The invention relates to an automobile plastic part injection mold oblique tripping mechanism which comprises a core pulling block used for forming an inverted buckle and a pouring gate arranged on the core pulling block, the pouring gate comprises a main runner and a submarine ox horn runner, the main runner is used for bearing hot melt plastic, and the submarine ox horn runner is used for bearing the hot melt plastic. The ox horn runner is communicated with the main runner and a cavity used for forming an inverted buckle on the mold, a mounting cavity is formed in the core-pulling block, a mounting seat is connected in the mounting cavity in a sliding manner, a communicating hole communicated with the mounting cavity and the main runner is formed in the core-pulling block, an ejector rod is arranged on the mounting seat and extends into the communicating hole, and the ejector rod is connected with the mounting seat in a sliding manner. A first control mechanism is arranged on the core pulling block and used for controlling the installation base to slide so as to drive the ejector rod to move into the main runner. While it is guaranteed that the automobile plastic part inverted buckle is completely formed, waste and the inverted buckle are automatically separated when the mold is opened, the inverted buckle is prevented from being pulled, and therefore the side contour edge of the inverted buckle is prevented from being pulled and deformed.

The invention belongs to the technical field of high polymer materials, and relates to a negative OC photoresist with low residual stress and high refractive index as well as a preparation method and application of the negative OC photoresist. The negative photoresist with the high refractive index at least comprises the following raw materials in parts by weight: 10-22 parts of nanoparticles with the high refractive index, 2-3 parts of an epoxy monomer, 3-10 parts of acrylic resin, 1-3 parts of an acrylic monomer, 1.5-4 parts of a photoinitiator, 0-4 parts of a photosensitizer, 0.01-0.5 part of a surfactant, 0-2 parts of a curing agent and 30-70 parts of a solvent. According to the invention, the epoxy monomer (spiro orthocarbonate compound) is added in the formula to form stable interaction with the nanoparticles, so that the dispersity of the nanoparticles in a polymer matrix is improved, and the overall performance of the photoresist is optimized.

The utility model belongs to the technical field of well drilling and workover fishing equipment, and discloses a slip fishing socket. The slip fishing barrel comprises an outer barrel body and a fishing slip located in the outer barrel body, relative displacement is formed between outer spiral sawteeth of the fishing slip and corresponding teeth in the outer barrel body, a first top cutting face is formed at the tail of the outer spiral sawteeth of the fishing slip, and a second top cutting face is formed at the tail of the first top cutting face. And a second top cutting surface is formed at the root part of a tooth corresponding to the outer spiral sawteeth in the outer cylinder body. According to the slip fishing socket, fishes of different specifications and some severely-deformed fishes can be fished, meanwhile, the inventory of blue tiles and spiral tiles is reduced, the number of times of tripping is reduced, and therefore the working efficiency is improved.

The invention discloses a jet printing method and system for an insulating coating on the surface of a battery cell. The method is used for controlling a spray head to sequentially form an insulating coating on each surface of a battery cell; wherein the first surface is a polar column surface; the sprayers comprise top sprayers and side sprayers; the method comprises the following steps: placing the front surface of the third surface of the battery cell upwards; performing at least one time of ink jet printing on the first surface and the second surface in sequence by using a side nozzle; carrying out primary ink jet printing on the third surface by adopting a top surface spray head; rotating the battery cell to enable the front surface of the sixth surface to be placed upwards; sequentially carrying out at least one time of ink jet printing on the fourth surface and the fifth surface by adopting a side spray head; carrying out primary ink jet printing on the sixth surface by adopting a top surface spray head so as to complete jet printing of an insulating coating on each surface of the battery cell; wherein the second surface is opposite to the first surface. According to the technical scheme provided by the embodiment of the invention, the six-surface jet printing of the square battery cell can be realized by adopting the UV jet printing process under the condition that the polar column surface of the battery cell is not inversely buckled.

The utility model provides a spherical rotor pump and a tooth cleaning device. The spherical rotor pump comprises a pump shell with a containing cavity; the rotor assembly comprises a first rotor and a second rotor, and the first rotor and the second rotor are both located in the containing cavity; the first rotor comprises a base part and a pin shaft part arranged on the base part, a groove is formed in the second rotor, and the pin shaft part is limited in the groove and can rotate around a third axis relative to the groove; the pin shaft part is provided with a first matching face and side faces located on the two sides of the first matching face, the first matching face is connected with the two side faces and is an arc-shaped face, the central angle of the first matching face is smaller than or equal to 180 degrees, and the minimum distance between the two side faces is equal to the chord length of the first matching face. Therefore, inverted buckling can be prevented from being formed between the side part forming the pin shaft part and the base part, so that the possibility that a rotor where the groove is located interferes with the pin shaft part or the base part when the pin shaft part and the groove rotate in a matched mode can be reduced, and the problem that abrasion is prone to occurring can be solved.

The utility model discloses a refrigerator freezing air duct cover plate mould, which relates to the mould field, and comprises a bottom plate, the front part and the rear part of the upper end of the bottom plate are respectively provided with a support plate, the upper ends of the two support plates are jointly provided with a support mould, and the middle part of the upper end of the support mould is fixedly sleeved with a lower mould; first side molds are installed on the front portion, the rear portion and the right portion of the upper end of the supporting mold correspondingly, a side mold component is installed at the left end of the supporting mold, an upper mold is arranged at the upper end of the lower mold, a transverse plate is installed in the middle of the upper end of the bottom plate, and an ejection component is installed at the upper end of the transverse plate. And the ejection part extends into the lower mold. By arranging the side mold part, the injection-molded workpiece can be conveniently taken out, so that the workpiece is prevented from being damaged or deformed due to being clamped in the mold, the quality stability of the workpiece is improved, the dead time of a production line is reduced, and the production efficiency is improved.

The present invention provides a method for manufacturing a display substrate, a display substrate and a display device. The method for manufacturing a display substrate includes: forming a first flexible substrate, a metal layer, a second flexible substrate, a first film layer and a second film layer on a hard substrate in sequence; opening a first via hole penetrating the second film layer to expose a portion of the surface of the first film layer away from the hard substrate; opening a second via hole penetrating the first film layer and the second flexible substrate to expose a portion of the surface of the metal layer away from the hard substrate, wherein the orthographic projection of the second via hole on the hard substrate is located within the orthographic projection of the first via hole on the hard substrate; opening a third via hole penetrating the first film layer to expose a portion of the surface of the second flexible substrate away from the hard substrate. The embodiment of the present invention avoids undercutting when opening via holes on the second flexible substrate by opening the first via hole, the second via hole and the third via hole in sequence, which helps to improve the reliability of wiring connection.

The application discloses a metal line forming method of a CIS, which comprises the following steps: forming a hard mask layer on a first metal layer, the first metal layer being formed on a second metal layer; performing photoetching by using a pattern mask plate to form a first photoresist pattern on the hard mask layer, and the hard mask layer of a target area is exposed; performing first dry etching by taking the first photoresist pattern as a mask, etching to a predetermined depth in the hard mask layer of the target area, and the first photoresist pattern is removed after the first dry etching; performing photoetching by using the same pattern mask plate to form a second photoresist pattern on the remaining hard mask layer; and performing second dry etching by taking the second photoresist pattern and the remaining hard mask layer as masks until the second metal layer in the target area is exposed, and the reaction by-products generated by the second photoresist pattern protect the area of the first metal layer exposed by etching in the second dry etching process. The application is beneficial to avoiding the problem of lateral drilling of the bottom of the metal line under the condition of prolonged over-etching time.

The present invention relates to a chip recovery system which uses a suction unit to suck and recover chips (M1) generated when a tip of a spot welding tip is cut with a tip dresser. The suction unit includes an electric motor (6) that rotates and drives, an impeller (5) that rotates by the electric motor (6) and generates a suction force, and a chip recovery tank (9) capable of recovering chips (M1). The chip recovery system is configured so as to recover the chips (M1), which move together with air sucked by the centrifugal impeller (5), into the chip recovery tank (9).

The utility model relates to the technical field of bulging dies, in particular to an inner container bulging die which comprises a movable die, a bulging female die, a lower die and a jacking mechanism. The bulging female die is arranged at the bottom of the movable die; the lower die is arranged below the bulging female die; the ejection mechanism is arranged above the lower die; the jacking mechanism comprises a circular ring, a groove, an air cylinder and a jacking block; the movable die is installed on the upper table top of the hydraulic machine, then the stretched inner container is reversely buckled on bulging glue, the upper table top of the hydraulic machine drives the bulging female die to descend and to be assembled with the lower die, and after the die is assembled, the three female die sliding blocks extrude the bulging glue, so that an inner cavity is filled, the straight-wall stretched inner container is formed into the spherical inner container, and after bulging is finished, the inner container is extruded by the three female die sliding blocks to form the spherical inner container. The bulging female die moves upwards, the female die sliding block retreats towards the periphery, the inner container retreats from the inner die, the air cylinder is started to drive the ejecting block to move upwards to eject the inner container, the inner container can be prevented from being attached to the outer wall of bulging glue, inconvenience in taking is avoided, and convenience is provided for workers.

The invention relates to the technical field of pepper breeding, in particular to a pepper breeding skin and seed separation device which comprises a cutting box. The feeding box is arranged on the side face of the cutting box in a penetrating mode; the conveying belt is arranged on the inner side of the cutting box and the inner side of the feeding box. Compared with the prior art, by arranging the conveying belt and the material uniformizing assembly, pepper raw materials are conveyed to the surface of the conveying belt in order under natural guide of gravity, a rotating roller in the material uniformizing assembly drives a shifting plate to rotate, and the shifting plate blocks and controls flowing of peppers in batches according to the interval and angle of the shifting plate; according to the hot pepper cutting machine, the hot peppers can be cut uniformly, uniform and continuous thin layers of the hot peppers are formed on the conveying belt, accumulation and blockage of the hot peppers are avoided, each hot pepper can be cut equally, the optimal distribution state of the hot peppers before cutting is ensured through operation of the hot pepper cutting machine, accurate and uniform cutting action of a cutter is facilitated, and the cutting efficiency is improved. Therefore, the sectioning quality and consistency of the pepper raw materials are greatly improved.