83results about How to "Guaranteed spacing" patented technology

The invention relates to wire and cable production and manufacturing automatic processing equipment and processing technology, and relates to the technical field of wires and cables.The wire and cable production and manufacturing automatic processing equipment comprises a fixing frame, a processing mechanism used for winding, pulling and twisting wires and a processing mechanism used for paying off and guiding single wires, and the processing mechanism comprises a paying off assembly and a guiding assembly; the processing mechanism comprises a winding assembly, a traction assembly and a twisting assembly; the winding assembly comprises a winding drum rotationally arranged on the fixing frame, a guide block movably arranged on the fixing frame, a rotating part used for driving the winding drum to rotate, a translation part used for driving the guide block to translate and a dismounting part used for dismounting the winding drum. When the multiple pay-off reels pay off wires at the same time, it can be guaranteed that the tightness of each single wire is kept consistent, the pay-off speeds of the pay-off reels are prevented from being different, and the phenomena of non-uniform pay-off, non-uniform stranded wire pitch and irregular stranded wire appearance caused by the fact that the lengths of the paid-off single wires are not consistent are prevented.

The invention discloses an integrated leftover material cleaning system, and relates to the technical field of monocrystalline silicon leftover material treatment equipment. Comprising a conveying mechanism, a primary cleaning mechanism, a secondary cleaning mechanism, an adjusting mechanism, a spraying and recycling pipeline system and a drying system. The system is formed by communicating a plurality of sections of box bodies; a back plate is vertically fixed in the box body; a conveying mechanism is arranged in the front part space of the multi-section box body; a cleaning mechanism is arranged in the box body at the front section; a secondary cleaning mechanism is arranged in the box body at the middle section, and a drying system is arranged in the box body at the tail section; the heights of the roller brushes of the primary cleaning mechanism and the secondary cleaning mechanism are controlled through an adjusting mechanism. Through the cleaning system, the integrated treatment of cleaning, conveying, drying and water source recycling of the leftover leather can be completed in a spraying and physical friction mode by integrating drying equipment, and the cleaning treatment efficiency is improved while continuous operation is formed.

The L-shaped rib plate unit assembling equipment comprises an assembling platform used for positioning an L-shaped rib plate unit, walking rails are arranged on the two sides of the assembling platform, multiple sets of material frames are further arranged between the walking rails on the two sides, and the multiple sets of material frames are arranged at intervals along with the assembling platform. The surface of the walking track is slidably connected with a positioning assembly trolley and a plurality of material lifting trolleys; the positioning assembly trolley is of a double-main-beam structure and comprises a first main beam and a second main beam, the first main beam comprises a first cross beam, a welding mechanical arm is slidably connected to one side of the first cross beam, a plurality of clamping mechanisms are arranged at the bottom of the first cross beam at intervals, and a plurality of pressing mechanisms are arranged in the first cross beam at intervals; and a plurality of material lifting mechanisms are arranged at the bottoms of the second main beam and the material lifting trolley. According to the invention, the assembling process of the L-shaped ribs is equipment, and the plurality of L-shaped ribs can be synchronously positioned and assembled, so that the construction efficiency is improved while the cost is saved; and the positioning and assembling precision is high, so that the welding quality of the L-shaped rib plate unit is improved.

The invention discloses a relay, which comprises a shell, a magnetic circuit part, a contact part and a pushing part, and is characterized in that the magnetic circuit part is mounted on the shell and comprises at least two magnetic circuit units; the contact part is arranged on the shell and comprises a movable spring group, a static contact group and a load terminal; the movable spring groups and the static contact groups are arranged corresponding to the magnetic circuit unit, and each movable spring group is provided with a movable contact group corresponding to the static contact group; each movable spring group and the corresponding static contact group jointly form a switch; the movable spring group and the static contact group in each switch are respectively connected with different load terminals, and at least one load terminal is shared by at least two switches and forms a common terminal; and the pushing part comprises a pushing piece accommodated in the shell, the pushing piece and the magnetic circuit unit are correspondingly arranged, and the pushing piece is driven by the corresponding magnetic circuit part to drive the corresponding movable spring group, so that the movable contact group and the corresponding static contact group are closed or opened. By adopting the technical scheme, the occupied space is smaller than that in the prior art for realizing the functions of more than two switches.

The utility model discloses a multifunctional film-mulching seeding machine, belongs to the technical field of seeding machines, solves the problem that the existing seeding machine cannot complete all cultivation operations of seed seeding, and adopts the technical scheme that the multifunctional film-mulching seeding machine comprises a rack, the rack is provided with a pesticide spraying device, a rotary cultivator device, a ridging device, a seed rope seeding device, a fertilizing device, a drip irrigation tape laying device, a film laying device and an earthing device, the pesticide spraying device comprises a pesticide storage barrel and a pesticide spraying rod, the rotary cultivator device comprises a rotary tillage blade, and the seed rope seeding device comprises a seed rope disc, a seeding pipe and a seeding wheel. The fertilizing device comprises a fertilizer box, a fertilizer discharging box, a connecting pipe and a fertilizing shovel, the drip irrigation tape laying device comprises a storage disc and a laying wheel, the film laying device comprises a film erecting rod and a film spreading roller, the soil covering device comprises a soil covering roller and a soil covering disc, and a notch is formed in the surface of the soil covering roller. The seeder disclosed by the utility model can automatically finish all cultivation operations required by seed sowing.

The utility model relates to a current transformer which comprises a coil assembly, an epoxy resin casting body, a P1 wiring copper bar and a P2 wiring copper bar, the coil assembly comprises an annular iron core, a coil winding arranged on the annular iron core and a hoisting support, one end of the hoisting support is provided with a supporting piece, the supporting piece is fixed on the coil winding through a ribbon, and the annular iron core is arranged on the annular iron core. One end of the hoisting support is provided with a coil winding, the other end of the hoisting support is provided with a hoisting plate connected with a pouring mold, two hoisting holes are symmetrically formed in the hoisting plate, two copper inserts connected with the pouring mold are arranged at the positions, corresponding to the two hoisting holes, of the hoisting plate, and the coil winding is connected with the P1 wiring copper bar and the P2 wiring copper bar through two primary leads. The coil winding, the annular iron core and the hoisting support are poured into a whole through epoxy resin to form the epoxy resin pouring body. The utility model has the advantages of compact structure, stable and reliable performance, good insulating property, low partial discharge and high production efficiency.

The utility model discloses a mold water-passing plate for melting a quartz crucible and a connecting structure thereof, which comprise a water-passing plate, a through hole is arranged at the center of the water-passing plate, and a guide ring corresponding to the edge of a mold is integrally formed on the lower surface of the water-passing plate; a machine frame is arranged on one side face of the water passing plate, and the water passing plate is arranged on the machine frame in a sliding mode. A fixed plate is arranged on the rack above the water passing plate in a sliding manner, and three graphite electrodes are fixed on the fixed plate and movably penetrate through the through holes. The mold has the advantages that the mold is simple in structure and easy to implement, heat can exist on the upper edge of the mold, heat flow is prevented from directly running out of gaps, electric energy consumption is reduced, and meanwhile the quality of the upper edge of a quartz crucible product is guaranteed; the distance between the water passing plate and the mold is ensured; and the quantity of graphite electrodes in the mold is ensured, so that the melting effect of quartz sand is ensured, and the product quality of a quartz crucible is improved.

The invention discloses a preparation method of an autoclaved aerated concrete plate with a built-in insulation board, and belongs to the technical field of production of aerated concrete plates. The preparation method comprises the following steps: placing the support frame; the concentric-square-shaped frame is placed on the supporting frame; the steel chisel mounting cross beam is mounted on the concentric-square-shaped frame; mounting a steel chisel on the steel chisel mounting cross beam; the mesh mounting piece is mounted on the steel chisel; a connecting piece is installed between the two reinforcing mesh pieces of the reinforcing mesh set; the reinforcing mesh is hung on the mesh mounting piece; the heat preservation plate is installed between the two steel bar meshes; injecting the slurry into a mold; feeding the steel chisel, the reinforcing mesh and the insulation board into a mold of the grouting material, and pre-curing to form a green body; pulling out the steel chisel from the mesh mounting piece, and demolding; the green body is cut and then subjected to steam curing; after steam curing is completed, the autoclaved aerated concrete plate is prepared. According to the invention, integrated production of the whole sandwich thermal insulation composite board can be realized, and the production efficiency of the composite wallboard is improved.

A high-voltage cabinet bus switching device disclosed by the present invention comprises a box body with openings at two ends and a bus passing through the opening of the box body, the bus is formed by overlapping a plurality of layers of copper sheets, the bus is provided with an output end and two input ends, the output end passes through a first floating sealing mechanism fixed at the opening of the box body, and the output end passes through a second floating sealing mechanism fixed at the opening of the box body. The input ends penetrate through a second floating sealing mechanism fixed to an opening of the box body, a gap maintaining mechanism is arranged on the inner side of the box body and used for separating the copper sheets at the platform section, and when the two input ends get close to each other, the gap maintaining mechanism is used for separating the copper sheets at the platform section. The input end of the bus is in a floating state, the bus can be attached to an output copper bar of a circuit breaker of a high-voltage cabinet during installation, installation stress is eliminated, installation reliability is improved, the heat dissipation performance is good, the service life of the high-voltage cabinet is prolonged, and the service life of the high-voltage cabinet is prolonged. And the overload capacity is high.

The invention relates to the technical field of sputtering film forming, and particularly discloses a microwave plasma assisted sputtering optical film forming device which comprises a vacuum box, magnetron sputtering boxes, a vacuum exhaust area and an oxidation reaction area, the magnetron sputtering boxes are installed on the side wall of the vacuum box and are communicated with each other, the two magnetron sputtering boxes are symmetrically distributed about the vacuum box, and the vacuum exhaust area is communicated with the oxidation reaction area. The vacuum exhaust area and the oxidation reaction area are both located on the side wall of the magnetron sputtering box, and a rotating assembly is arranged in the vacuum box. The distance between the magnetron sputtering target material and the substrate is kept, the stability and the film forming effect in the sputtering film forming process are improved, the function of monitoring and controlling the consumption state of the target material is achieved, the observation operation process of people is greatly simplified, the risk after the sputtering target material is plated through is reduced, and the safety is improved; and an oxidation zone is constructed as an oxygen particle activation zone, so that a better oxidation effect is achieved.

The utility model relates to the technical field of washing machines, and discloses a drying device for an embedded bathroom cabinet washing machine all-in-one machine, the drying device comprises an exhaust pipe and a collection box, the exhaust pipe is arranged between a cabinet and an outer cylinder; the air inlet end of the exhaust pipe is communicated with an outer barrel of the washing machine; the air outlet end part of the exhaust pipe is arranged outside the cabinet body; the position, close to the air outlet end, of the exhaust pipe is lower than the position, close to the air inlet end, of the exhaust pipe. The collecting box is communicated with the exhaust pipe. The drying device has the effect of reducing the possibility that the interior of the cabinet body is moistened by damp and hot gas exhausted by the drying device.

The invention discloses a method for manufacturing a zeroth metal layer of an active region. The method comprises the following steps of: 1, providing a semiconductor substrate on which an active region contact hole opening forming process is completed; 2, forming an inner side wall on the side surface of the opening of the active area contact hole; and step 3, forming a BARC layer. And 4, performing a photoetching process to form a photoresist pattern to open the first ion implantation region. And step 5, removing the BARC layer in the first ion implantation region and performing first ion implantation to form a contact region at the bottom of the active region contact hole opening. And step 6, removing the BARC layer by adopting an ashing process, wherein the ashing process does not contain oxygen so as to ensure that the inner side wall is not oxidized. And 7, pre-cleaning is conducted, and in the pre-cleaning process, the inner side wall is reserved due to the fact that the inner side wall is not oxidized. And 8, forming a zeroth metal layer of the active region. According to the invention, the contact region can be formed to reduce the contact resistance, meanwhile, the size of the M0A can be ensured not to be enlarged, the parasitic capacitance between the M0A and the grid can be reduced, and the short circuit between the M0A and the grid can be prevented.

The present invention provides a chassis system with a telescopic wheelbase, comprising an axle frame, a support block, an inner rod, a mounting frame, an axle frame connecting rod, an axle frame connecting plate, an expansion lever, an outer connecting rod and a hydraulic cylinder; the number of the axle frames is set to four groups, and an axle frame connecting rod is fixedly arranged between two groups of axle frames through a rotating shaft; the mounting frame is integrally arranged on the top of the outer side of the axle frame; the expansion lever, the outer connecting rod and the hydraulic cylinder provide the chassis with a telescopic wheelbase function, the outer connecting rod can be directly opened by the hydraulic cylinder, and the position of the inner rod and the axle frame connecting plate can be moved in cooperation with the outer connecting rod, and the axle frame is opened to both sides to achieve the purpose of increasing the wheelbase, so that the position of the car can be changed by adjusting the wheelbase during driving to achieve the effect of facilitating driving, and when the car slips and falls, the car can try to return and move through its own function, and it has strong applicability.

The invention discloses an argon arc welding wire receiving and feeding mechanism for large reactor machining, and relates to the technical field of reactor welding. The feeding part is installed at the bottom of the welding gun and used for storing welding wires, the feeding part comprises a connecting frame fixedly installed at the bottom of the welding gun, a storage box for storing the welding wires is fixedly installed on the connecting frame, and a pressing assembly and a pushing assembly which are matched with the welding wires are installed on the storage box; and the feeding part is mounted at the bottom of the welding gun. The device has the advantages that strip-shaped welding wires with different thicknesses can be stably and continuously fed, the welding efficiency is effectively improved, the welding wires can be preheated before welding, the temperature difference before welding is reduced, the temperature rising time of the welding wires is shortened, the melting efficiency and the welding efficiency of the welding wires are improved, in addition, the welding wires can be straightened, and the welding quality is improved. The welding wire is kept in a straight state before being welded, and the distance between the welding wire and a welding gun is ensured, so that the welding quality is effectively improved.

The utility model discloses a kind of pull-out force testers, it is related to pull-out force test technical field, including base;Two bracing bars are fixedly installed on base;Bracing bar top is fixedly installed with top plate;Between top plate and base, screw rod is movably installed;One end of screw rod is fixedly installed with driving motor;Lifting plate is movably installed on screw rod;One end of lifting plate is fixedly installed with U-shaped frame;U-shaped frame bottom is fixedly installed with tensioner;The tensioner is electrically connected with tester by data line;The tester is fixedly installed with fixed frame;The bottom of fixed frame is fixedly installed with base;In carrying out pull-out force test, driving motor moves upwards by screw rod and the tensioner of U-shaped frame bottom installation lifting plate, effectively detect the pull-out force of fixed fiber, when fiber is pulled out, the tension exerted on tensioner is transmitted to tester by data line, to ensure the accuracy of detection value.

The invention belongs to the technical field of optical fiber distribution, and discloses an optical fiber distribution device and an optical fiber distribution method. The optical fiber distribution device comprises a distribution cabinet, OTN transmission equipment arranged in the distribution cabinet, an optical fiber carding structure and an optical fiber fixing structure, wherein the optical fiber carding structure and the optical fiber fixing structure are arranged in the distribution cabinet; a plurality of optical fibers are inserted into the OTN transmission equipment; the optical fiber carding structure can card optical fibers and independently arrange each optical fiber on the separation position; the optical fiber fixing structure is arranged on the OTN transmission equipment, and the optical fiber fixing structure can clamp and fix the end part of each optical fiber. Each optical fiber inserted into the OTN transmission equipment is separated independently by using the optical fiber carding structure, so that a plurality of optical fibers are prevented from being wound together, and the maintenance and replacement difficulty is reduced; each optical fiber is independently arranged on the separation position, so that the phenomenon that the optical fibers are bundled to form relatively large sagging gravity is avoided; the optical fiber fixing structure is arranged to clamp and fix the end part of the optical fiber, so that the plugging stability of the end part of the optical fiber and the OTN transmission equipment is improved, and the optical fiber is effectively prevented from falling off.

This utility model relates to the field of electronic component technology and discloses a mounting integration assembly. The assembly includes multiple mounting components and bridging components on a tape. Multiple mounting components for mounting components are integrated into a single unit, with one side of each component serving as the mounting surface. Bridging components are retained to fix the relative positions of the multiple mounting components, ensuring consistent spacing and dimensions. An adhesive backing is attached to the side of the tape away from the mounting surface, fixing all mounting components to the backing. This ensures that even after removing the bridging components, the relative positions of the multiple mounting components remain stable, without affecting the spacing and coplanarity of the components before mounting. This assembly allows for the simultaneous mounting of multiple components onto components and is suitable for mounting components of various specifications, achieving multi-functional integration of components, improving mounting efficiency and effectiveness. The operation is simple, easily automatable, and ensures mounting reliability and stability.

The application provides a linear motion test system of a multi-channel inductive proximity sensor, relates to the technical field of aviation sensor testing, and comprises a base, a plurality of linear motion platforms installed on the base, a plurality of targets fixed on the linear motion platforms through target supports, a plurality of proximity sensors fixed on the base through sensor supports, a plurality of stepping motors for driving the linear motion platforms to move along a straight line, and an upper computer connected with the stepping motors through a CAN bus via a CAN distributor, for sending position control instructions to the stepping motors, so that the stepping motors drive the linear motion platforms to drive the targets to move, the distance between the targets and the proximity sensors is adjusted, the inductance values of the plurality of proximity sensors are collected by a measured controller, and performance verification is completed. The application realizes automatic and accurate control, reproduces real working conditions, improves the reliability of test data, adapts to the testing requirements of multiple scenes, and guarantees the operation reliability of aviation key systems.

The invention provides a diaphragm type pressure detection device, a manufacturing method and semiconductor equipment, relates to the technical field of semiconductor equipment, and is used for solving the problem of how to improve the consistency of diaphragm tightening of the diaphragm type pressure detection device. Specifically, the diaphragm type pressure detection device comprises a first shell, a diaphragm and a first outer frame, and the diaphragm is located on one side of the first shell; the first outer frame is connected to the side, facing the first shell, of the diaphragm, surrounds the first shell and is in interference fit with the first shell so as to tighten the diaphragm; a detection cavity is defined by the first outer frame, the first shell and the membrane, and the detection cavity is used for being communicated with a to-be-detected cavity.

The invention discloses a splicing submerged plant planting device for water ecological restoration, which comprises a floating disc body, a plurality of loading frame bodies are embedded and spliced in the floating disc body, pushing planting mechanisms for planting submerged plants are symmetrically arranged at the top of the floating disc body, and each pushing planting mechanism comprises vertical frames respectively mounted on two sides of the floating disc body. Moving components are arranged between the vertical frames and the floating disc body, a transverse rail is horizontally arranged between the two vertical frames, a downward pushing component is arranged on the transverse rail, and an arc-shaped material pushing claw is arranged at the lower end of the downward pushing component; even if the floating disc body floats in the middle of the water surface, rows of planting bags in the floating disc body can be automatically pushed downwards, the multiple planting bags are made to sink into underwater sludge at the same time for planting, the positions of the arc-shaped material pushing claws can be changed according to the splicing size of the loading frame body, it is guaranteed that materials are pushed downwards for planting in each row of planting bags, and the planting efficiency is improved. And the planting efficiency and convenience of submerged plants in the floating disc body are improved.

Embodiments of the present application provide a head cap and a brain electrical near-infrared synchronous acquisition device. The head cap comprises a main body, a plurality of pads, a plurality of probe mounting portions and a plurality of electrode mounting portions. The main body is used to form a space for accommodating a head of a subject. The plurality of pads are arranged at different positions on the inner side of a first part of the main body, so that each pad forms a laminated structure with the first part of the main body. The plurality of probe mounting portions are arranged on the laminated structure and are used to mount probes for acquiring fNIRS signals. The plurality of electrode mounting portions are arranged on a second part of the main body which is not provided with the plurality of pads, and are used to mount electrodes for acquiring electroencephalogram signals. In this way, the pads can position the probe mounting portions and maintain the spacing between the probe mounting portions, thereby improving the performance of near-infrared brain function imaging. Meanwhile, the electrodes for electroencephalogram and the probes for near-infrared brain function imaging do not interfere with each other, are reasonably arranged, and achieve the best data acquisition effect.

The utility model relates to the technical field of new energy automobile equipment, and discloses a plug-and-play charging pile which comprises a base, the upper end of the base is fixedly connected with a charging pile body, the front side of the charging pile body is fixedly connected with a charging gun, the front side of the base is connected with an operation table in an embedded mode, and the right side of the base is fixedly connected with a first fixing box. The front side of the first fixing box is fixedly provided with an indicating lamp, the lower end of the first fixing box is fixedly connected with a wire passage, and the front end of the wire passage is fixedly connected with a second fixing box. The telescopic rod, the spring and the connecting plate are installed in the second fixing box to form a telescopic structure, when an automobile is pressed on the telescopic structure, the upper portion and the lower portion of the telescopic rod form a closed loop, the indicating lamp is turned on after the circuit is turned on, and a driver can accurately park the automobile through indication of the turned-on indicating lamp. The charging pile cannot be collided due to excessive backing, the distance between the left and right parking of the automobile can be guaranteed, and opening and closing of the automobile door are facilitated.

A simple steel arch mounting trolley is composed of a portal trolley, a longitudinal trolley system, a vertical trolley system and a lifting mechanism system and is advanced and reasonable in structure and low in cost. A worker can assemble the steel arch frame by standing on the ground, and safety and high efficiency are achieved; the working platform of the mounting trolley can be used for mounting and welding the connecting steel bars and the steel bar meshes of the steel arch, and is simple and convenient. And the concrete spraying operation can be carried out by virtue of the working platform for mounting the trolley.

The utility model discloses a metal shielding water -resistant cable, including the body, the body includes core line (1), the outer layer of core line (1) is overlapped and is wrapped with water -resistant tape (2), be equipped with a plurality of copper wire (2.1) along the length direction of water -resistant tape (2) in water -resistant tape (2), a plurality of copper wire (2.1) along the width direction of water -resistant tape (2) evenly spaced array setting. The utility model provides a kind of metal shielding water -resistant cable to improve the wrapping stability of copper wire loose winding, guarantee the tightness of a kind of wrapping.

An electromagnetic device belongs to the technical field of low-voltage apparatuses. Comprising a frame, a coil framework and a coil, the coil is wound on the coil framework, the coil framework is contained in the frame, the frame axially limits the coil framework through cooperation of a top plate and a bottom plate, the side, facing the top plate, of the coil framework is provided with a top disc, and the side, facing the bottom plate, of the coil framework is provided with a bottom disc. A positioning piece for preventing the coil framework from rotating is arranged between the top disc and the top plate, an isolation area is arranged on the coil framework, the isolation area is arranged on the top disc, and the edge of the isolation area extends out of the top plate, or the isolation area is arranged on the bottom disc, and the edge of the isolation area extends out of the bottom plate. The side face, facing the coil, of the isolation area is provided with a wire groove for wiring of outgoing lines of the coil. The coil framework has the advantages that on the basis of preventing the coil framework from rotating relative to the framework, the isolation area is arranged at the position of the coil outgoing line so as to effectively guarantee the distance between the outgoing line and the framework, and product miniaturization is facilitated while the working reliability is improved.

The present invention discloses a splicable submerged plant planting device for water ecological restoration, comprising a floating plate body, wherein a plurality of loading frames are embedded and spliced ​​in the interior of the floating plate body, a pushing and planting mechanism for submerged plant planting is symmetrically arranged on the top of the floating plate body, the pushing and planting mechanism comprises upright frames respectively installed on both sides of the floating plate body, a movable member is arranged between the upright frames and the floating plate body, a horizontal rail is horizontally arranged between the two upright frames, a downward pushing member is arranged on the horizontal rail, and an arc-shaped pushing claw is arranged at the lower end of the downward pushing member; the present invention can automatically push rows of planting capsules in the floating plate body downward even if the floating plate body floats in the middle position of the water surface, so that a plurality of planting capsules can be sunk into the bottom mud for planting at the same time, and the position of the arc-shaped pushing claw can be changed according to the splicing size of the loading frame, so as to ensure that the planting capsules in each row are pushed downward for planting, thereby improving the efficiency and convenience of planting submerged plants in the floating plate body.

The utility model belongs to the technical field of horizontal lathes, and particularly relates to a horizontal lathe tool quick-changing device which is installed on a machine tool spindle and comprises a tool body, a first inner hexagon screw, a pressing block, a hole turning positioning plate, a first baffle and a nylon screw. A plurality of threaded through holes are formed in the top of the tool body, the first inner hexagon screws penetrate through the threaded through holes and are in threaded connection with the pressing block, the hole turning positioning plate is arranged on the upper surface of a bottom plate of the tool body, and the first baffles are arranged on the left side and the right side of the tool body respectively to abut against the hole turning positioning plate. A threaded through hole is formed in the surface of the hole turning positioning plate, and the nylon screw is installed in the threaded through hole and used for locking a part to be machined. The positioning device is suitable for positioning and processing square parts, and effectively ensures the product quality.

A standard calibration frame for a crystal ingot bonding stage and a method for bonding 12-inch semiconductor crystal ingots are disclosed. The standard calibration frame includes a base that can be installed on the workpiece board station of the crystal ingot bonding stage and two calibration crossbars fixed on the base. The base is rectangular, and the two calibration crossbars are spaced apart along the length of the base. The distance from the end of any calibration crossbar to the longitudinal center line of the base is equal, and the line connecting the ends of the two calibration crossbars on the same side of the base's length direction is parallel to the length direction of the base. This invention can eliminate the influence of equipment wear and tear on the crystal ingot bonding accuracy, ensuring the quality of the final product.

The present invention relates to the field of adhesive tapes, and in particular to a spray-coated masking tape with a hollow pattern and a preparation method thereof, the preparation method comprising: an adhesive is mainly prepared from the following components in parts by weight: 5 to 8 parts of acrylic resin, 35 to 55 parts of terpene resin, 3.5 to 5 parts of phenolic resin, 0.3 to 0.6 parts of defoamer, 5 to 10 parts of silicon powder, and 2 to 4 parts of plasticizer; a release-treated masking paper is used as a substrate, the moisture content is controlled to be 2% to 4%, the adhesive is coated on one side of the substrate, placed in an oven at 120 to 140°C, dried for 4 to 5 minutes, and divided to obtain the spray-coated masking tape. The present invention uses an adhesive made of a combination of acrylic resin, terpene resin, phenolic resin, silicon powder, plasticizer and defoamer to prepare a masking tape, giving it significant high temperature resistance.