32results about How to "Avoid inconsistent thickness" patented technology

The invention discloses a full-automatic battery module locking device, which comprises a battery module, a nut positioning mechanism and a torque-adjustable screw locking mechanism, wherein the battery module is provided with a plurality of screws; each screw penetrates through the battery module and comprises a top end part and a thread part; the nut positioning mechanism is arranged at one sideclose to the thread parts and is used for positioning to-be-installed nuts, so that the to-be-installed nuts are overlapped with the axes of the screws; each to-be-installed nut corresponds to one screw; and the torque-adjustable screw locking mechanism is arranged at one side close to the top end parts, and is used for determining locking torque and driving the screws to rotate around the axes of the screws under the action of the locking torque, so that the to-be-installed nuts are arranged at preset positions of the corresponding thread parts. According to the full-automatic battery modulelocking device, automatic tightening of the screws and the nuts is achieved through the nut positioning mechanism and the torque-adjustable screw locking mechanism, tightening missing is avoided, theinconsistency of the locking torque is avoided and the thickness of the locked battery module is consistent, thereby reducing the labor cost and improving the quality and the production efficiency ofthe battery module.

The invention relates to a paste mixing and brick making preparation method of a lithium ion battery pole piece. The paste mixing and brick making preparation method comprises the following steps of: (1) making material paste preparation, namely carrying out dry mixing on a negative electrode material raw material or a positive electrode material raw material, and adding a solvent into the dry mixed material to obtain the material paste; (2) feeding the paste into a mold, namely adding the prepared paste into a battery pole piece mold which is internally provided with a base material sheet and is divided into an upper mold and a lower mold, placing a base material on the lower mold, and after the paste is coated on the base material, carrying out cavity closing pressing on the upper mold; and (3) performing drying and compaction, namely heating and drying the paste pole piece loaded into the mold cavity, and applying a certain pressure in the drying process to obtain the lithium ion battery pole piece. Compared with the prior art, the paste mixing and brick making preparation method has the advantages of simple process, low investment cost, high investment benefit, great reduction of the cost of the power battery, facilitation of popularization and application of the electric automobile and the like.

The invention discloses a boron doping method, a solar cell and a manufacturing method of the solar cell, relates to the technical field of photovoltaics, and aims to enable boron to be easily doped into a silicon wafer and reduce the boron doping difficulty. The boron doping method comprises the following steps: providing a silicon substrate; forming an auxiliary layer on the silicon substrate, wherein the material of the auxiliary layer comprises titanium dioxide; forming a boron-containing slurry layer on the auxiliary layer; propelling boron impurities in the boron-containing slurry layer through the auxiliary layer into the silicon substrate by using a laser to dope the silicon substrate. The boron doping method, the solar cell and the manufacturing method of the solar cell are used for manufacturing the solar cell.

The invention discloses an automatic coating machine for lithium battery pole pieces, which is used to solve the problems of time-consuming and resource waste of the existing continuous coating machine and complex structure, difficult operation and difficult quality control of the intermittent coating machine. The invention comprises an unwinding device, a tension adjustment device is installed at the rear end of the unwinding device, a slurry coating device is installed at the rear end of the tension adjustment device, a drying device is installed at the rear end of the slurry coating device, and a receiving device is installed at the rear end of the drying device. Rolling device; the unwinding device is mainly composed of an unwinding roller, on which the pole piece roll is installed, and the tension adjustment device is mainly composed of a set of tension adjustment rollers; the slurry coating device includes a battery slurry coating on the pole piece The coating roller and the die head, the die head is matched on one side of the coating roller in parallel, and the outlet of the die head is facing the coating roller; the outlet of the die head is provided with a gasket for partitioning the battery slurry, and the gasket The height is lower than the depth of the battery slurry in the die. The invention not only solves the problem that the quality of the intermittent coating machine is difficult to guarantee, but also overcomes the problem of resource waste of the continuous coating machine.

The invention discloses a fully automatic battery module locking device, which comprises: a battery module, on which a plurality of screw rods are arranged, each screw rod runs through the battery module group, and each screw rod includes a top end part and a threaded part The nut positioning mechanism is arranged on the side adjacent to the threaded part, and is used to locate the nut to be installed, so that the axis of the nut to be installed coincides with the axis of the screw rod, and each nut to be installed corresponds to a screw rod; the torque adjustable screw rod locking mechanism is arranged on The side adjacent to the top end is used to determine the locking torque, and under the action of the locking torque, the screw is driven to rotate around the axis of the screw, so that the nut to be installed is installed to a preset position of the threaded part. The invention realizes the automatic tightening of the screw and the nut through the nut positioning mechanism and the torque-adjustable screw locking mechanism, which not only avoids missing screwing, but also avoids inconsistent locking torque, so that the thickness of the battery module after locking is consistent, thereby reducing the It reduces labor costs and improves the quality and production efficiency of battery modules.

The invention discloses an ultra-thin wafer processing device, the structure of which comprises a processing mechanism, a rotator, a control switch, and a workbench. The mechanism is installed on the upper end of the workbench, and the rotator is fixed on the upper end of the workbench. The extended part of the wafer acts on the friction block. Under the reverse rotation of the wafer, it acts on the continuous bending structure of the friction block and the bending plate, causing a sticking effect on the wafer. Combined force, avoiding the extension of the outer side of the wafer while enhancing the smoothness of the outer side of the wafer, and preventing the problem of inconsistent thickness on the outer side of the wafer. After the wafer is lost, the grinding structure is controlled to lift up and down, so that the fixed ring drives the grinding plate up and down, so that the stressed structure and the sticking The plywood is exposed through the gap groove, which increases the length of the stressed structure and enhances the friction force of the arc-shaped knife edge in the support rod against the wafer, avoiding the need for frequent disassembly and replacement after grinding loss, and preventing frequent disassembly and installation from affecting the accuracy of the grinding structure.

The invention provides a coating dryer and an air nozzle with a buffer structure special for the coating dryer. The air nozzle comprises an air chamber, a straight section and a bending section, one end of the straight section is communicated with the air chamber, the other end of the straight section is connected with one end of the bending section, the other end of the bending section is provided with an air outlet, and the bending section and the straight section are arranged in an obtuse angle mode. The straight section is arranged in front of an air outlet of the air nozzle, so that flow is led to pass through a section of flat channel. Due to the fact that sudden size variation of the ventilation area does not happen, eddies can not be caused, a pressure equalizing area can be formed in the straight section instead, and the stability of the air speed is guaranteed. The bending section is additionally arranged in front of the air outlet, so that the air does not directly blow a foil band, and the air slowly blows the foil band with an angle. Accordingly, when the air nozzle is applied to the coating dryer, the air speed after pressure equalizing is stable so that upward pushing force formed by the air blown out from the air nozzle to foil materials can be stable, the chattering phenomenon of the foil materials can not happen in a drying oven, and the problem that the thicknesses of coatings are not consistent is solved.

The invention relates to the technical field of drilling fluid leakage prevention and plugging, and discloses an experimental system for evaluating the effect of drilling fluid leakage prevention and plugging, including: a pressurizing device, which is suitable for outputting compressed gas to form a predetermined experimental pressure; Cup, which includes a cup body with an inner cavity, the upper end of the cup body is connected with a pressurizing device, and the lower end of the cup body is provided with a liquid discharge port; the leakage model includes a permeable leakage model and a crack type leakage model selectively installed in the cup body The model is suitable for dividing the cup body into a pressurized chamber connected with the pressurizing device and a liquid leakage chamber connected with the liquid discharge port at the installation position, wherein the permeable leakage model is a columnar sand plate; It includes a columnar model body, the columnar model body has a crack suitable for connecting the pressurized chamber and the leakage chamber, and multiple seams are formed on the inner wall of the crack. The invention can more realistically simulate formation fracture type leakage and seepage type leakage.

The invention discloses a manufacturing method of a partial hybrid printed circuit board. The manufacturing method comprises the following steps that core boards and prepregs are provided, and the core boards into which a high-frequency material needs to be embedded are correspondingly overlapped according to the positions where the high-frequency material needs to be embedded, wherein each prepreg is arranged between two adjacent core boards into which the high-frequency material needs to be embedded; the overlapped core boards are pressed to form a first multi-layer board; a through groove where the high-frequency material needs to be embedded is milled at the position, where the high-frequency material needs to be embedded, of the first multi-layer board, and the high-frequency material is embedded into the through groove of the first multi-layer board. By the adoption of the manufacturing method, the process of milling the prepregs in the prior art is omitted, the phenomenon that the first multi-layer board is inconsistent in thickness due to the fact that too much glue flows out of the positions close to the through groove, of the core boards into which a high-frequency material needs to be embedded is avoided, the alignment precision between the core boards is improved, the quality of the partial hybrid PCB is improved, and working efficiency is improved.

The invention provides a coating dryer and an air nozzle special for the coating dryer. The air nozzle special for the coating dryer comprises an air chamber and a straight section, one end of the straight section is communicated with the air chamber, and an air outlet is formed in the other end of the straight section. Compared with a scattered air outlet mode used in an air outlet of a common air nozzle, the coating dryer and the air nozzle special for the coating dryer have the advantages that the straight section is arranged in front of the air outlet of the air nozzle, so that fluid is led to pass through a section of flat channel, due to the fact that sudden size variation of the ventilation section area does not exist in the straight section, eddies can not be caused, a pressure equalizing area can be formed in the straight section instead, and the stability of the speed of air blown out from the air outlet finally is guaranteed. When the air nozzle is applied to the coating dryer, due to the fact that the air speed after pressure equalizing is stable, the air speed enables upward pushing force formed by the air blown out from the air nozzle to foil materials to be stable, the chattering phenomenon of the foil materials can not happen in a drying oven, and the problem that the thicknesses of coatings are not consistent is solved.

The invention discloses a preparation method of a high-flame-retardant fireproof cable. The preparation method comprises the following steps: 1) wire drawing and twisting of a wire core; 2) stranded wire insulation; (3) twisting the cable; (4) preparing an organic coating; (5) fireproof mud is extruded and coated; (6) re-preparing the organic coating; and 7) cable insulation. By optimizing the components and proportion of the fireproof mud, the flowability and adhesion of the fireproof mud are ensured; and the special organic coating is pre-coated on the surface of the cable, so that the bonding effect of the fireproof mud and the cable is improved, and meanwhile, moisture in the fireproof mud is prevented from permeating into the internal conductive cable. And a specific organic coating is further sprayed on the outer layer of the coated fireproof mud, so that evaporation of water is prevented, and cracking of the fireproof mud due to drying is avoided. In the insulation extrusion molding process of the cable containing the composite coating, small-angle reciprocating rotation is applied to the cable, the situation that the thicknesses of insulation layers on the upper surface and the lower surface of the cable are inconsistent due to gravity is avoided, and the eccentricity of the cable is reduced.

The invention discloses a device and method for enabling the thickness of retainer locking claws to be consistent, and relates to the technical field of bearing structure machining. For solving the problem that when the cutter is aligned with the centers of the retainer locking claws manually, and the thicknesses of two sides of a part of the locking claws of 12 pairs of the locking claws in the machined single retainer are inconsistent, the device comprises a second control motor, a power supply, the retainer, the cutter, a bottom base, a machine base, a first control motor, an air pump, a first mechanical arm, a second mechanical arm, an alignment mechanism, a telescopic air cylinder and a cutter bar, wherein before the bearing retainer is machined, centering and positioning are carriedout on the cutter and the retainer through the alignment mechanism, after the centering and positioning is confirmed, the locking claws of the bearing retainer is machined, and the situation that dueto the fact that the cutter is not consistent with the centers of the retainer locking claws, the thickness of the two sides of the part of the locking claws of the machining completed retainer are caused to be inconsistent is avoided. The device and the method are suitable for the centering and positioning the cutter and the retainer locking claws and enabling the thickness of the two sides of the machined retainer locking claws to be consistent.

The invention relates to double-sided GPP protection transistor chip production equipment, in particular to a modified double-sided electrophoresis rack for electrophoresis. The double-sided electrophoresis frame includes a beam, a negative plate, a positive ring, a support plate, a positioning plate, a slot and a side plate. On the outer side of the upper part, the slot for connecting with the power supply of the electrophoresis equipment is fixed on the upper end of one of the side plates, the two ends of the supporting plate are horizontally fixed on the lower inner side of the two side plates, and several negative plates and positive rings are alternately fixed on the supporting plate. board. Using a double-sided electrophoresis frame, the consistency of electrophoresis on both sides of the silicon wafer at the same time is good, avoiding the problem of inconsistent thickness of the glass layers on both sides of the silicon wafer caused by two single-sided electrophoresis, and the simultaneous electrophoresis on both sides is not easy to be damaged, thereby improving product yield and reliability.

The invention discloses a manufacturing method and device for a single-layer abrasive particle grinding wheel. The method includes the following steps that firstly, a fixed-thickness structure is adjusted so that an unchangeable binding agent coating gap can be formed by the fixed-thickness structure and a to-be-coated work face of a grinding wheel base body; secondly, the to-be-coated work face of the rotating grinding wheel base body is coated with a binding agent, the binding agent is smeared to the whole grinding wheel base body through the rotation movement of the grinding wheel base body, meanwhile, the excessive binding agent smeared to the surface of the grinding wheel is spread and removed through the fixed-thickness structure under the restraint of the binding agent coating gap between the fixed-thickness structure and the grinding wheel base body; thirdly, after the binding agent is smeared, the grinding wheel base body rotates continuously, abrasive particles fall at a uniform speed from the fixed position above the grinding wheel base body, and the abrasive particles can be evenly scattered on the surface of the binding agent of the grinding wheel base body by means of the rotation movement of the grinding wheel base body; and fourthly, binding agent curing is conducted on the grinding wheel base body coated with the binding agent and the abrasive particles, and the brazing abrasive particle grinding wheel is formed.

The invention relates to a rice spreading device for making rice crust. A rice stirring device comprises two stirring brackets; a stirring box is arranged between the two stirring brackets; a stirring shaft is arranged in the stirring box; the stirring shaft is provided with a plurality of long stirring teeth; the stirring box is also provided with a discharge hole; the stirring shaft is provided with a plurality of short stirring teeth at the position corresponding to the discharge hole; a blanking pipeline which is arranged in an inclined way is connected at the outer side of the discharge hole; one end of the blanking pipeline is connected with a dust cover; a support platform is arranged under the dust cover; the support platform is provided with a plurality of trays used for spreading the rice; one end of the dust cover is provided with an oiling brush in an inserting way, and the upper end of the oiling brush is connected with a cooking oil pipeline; a weight sensor is arranged just under the blanking pipeline and on the support platform; a press plate which is driven to move by a cylinder is arranged at the other end of the dust cover. The rice spreading device is capable of automatically spreading the rice, so that the labor intensity of workers can be lightened, and safety and sanitation are guaranteed.