235results about "Gear wheels" patented technology

The invention discloses an automatic copper pipe tooth rolling production line, and belongs to the technical field of copper pipe tooth rolling machining. The gear rolling production line comprises a plurality of gear rolling machines, a feeding line and a feeding assembly. The feeding assembly comprises a feeding conveying mechanism, a jacking distributing mechanism, a feeding buffering mechanism and a longitudinal conveying mechanism. The feeding conveying mechanism comprises a feeding frame and a plurality of feeding conveying units, the feeding temporary storage mechanism comprises a feeding temporary storage frame, and a temporary storage part of the feeding temporary storage frame and a bearing surface of a discharging guide part are obliquely arranged; the jacking and distributing mechanism comprises a jacking and distributing unit, and the jacking and distributing unit comprises a first-stage jacking frame and a second-stage jacking frame. The position layout of the tooth rolling machines is reasonable, the space of a plant workshop is fully utilized, the feeding requirements of multiple tooth rolling machines can be met by arranging the feeding assembly on one layer and one feeding line in the workshop, the production rhythm of the multiple tooth rolling machines can be met, copper pipes are stable, reliable and high in conveying efficiency in the conveying process, the falling risk is avoided, and the production efficiency is improved. And the safety of equipment and personnel is ensured.

To provide an NC thread rolling machine that performs rough processing and finishing processing on a workpiece and that can be made compact.SOLUTION: An NC thread rolling machine 100 comprises: a pair of first flat dies 104a, 104b for rough processing; a pair of second flat dies 105a, 105b for finishing processing arranged adjacently to the first flat dies in parallel; rack driving mechanisms 106a, 106b which move one pair of first and second flat dies and the other pair of first and second dies mutually in parallel directions and also in opposite directions; respective mechanisms 110, 112, and 114 which rotate a workpiece, support both ends of the work rotatably, and also shift the workpiece between the first flat dies and second flat dies; and a numerical control part 148, wherein the numerical control part controls the respective mechanisms including the rack driving mechanism to support the workpiece between the first flat dies so as to perform rough processing on the workpiece with the first flat dies, shift the workpiece after the rough processing to between the second flat dies, and then perform finishing processing on the workpiece with the second flat dies.SELECTED DRAWING: Figure 2

The invention belongs to the technical field of rotor internal gear stamping, and particularly discloses a rotor internal gear stamping device which comprises a cold stamping frame, a cold stamping mechanism, a self-adaptive speed regulating device, a multi-directional linkage cleaning and discharging device and a dovetail groove locking type die replacement part. According to the fact that when a gear is stamped, stamping force needs to be large (enough stamping force is generated to complete gear forming) and cannot be too large (too large impact force can cause brittle fracture of the gear), the technical effect of self-adaptive lossless stamping on the gear is achieved in the mode that rotation damping is generated through self-adaptive centrifugal external expansion friction. And multiple technical effects of gear discharging and pneumatic cleaning of the die are achieved by means of driving force during stamping and a multidirectional linkage mode.

The invention relates to the technical field of cold extrusion forming, and discloses cold extrusion forming equipment for gear production and machining. The extrusion seat is arranged above the operation table; the linear telescopic mechanism is fixed at the top of the operation table, and the telescopic end is fixed with the extrusion seat; and the forming mechanism is arranged at the top of the operation table and comprises an installation base detachably installed at the top of the operation table, a movable sleeve arranged at the top of the installation base, a forming mold formed by splicing a plurality of mold splicing single bodies and a contraction driving assembly. According to the forming mechanism provided by the invention, by adopting a splicing forming mold and a linkage structure, the mold monomers are driven to be unfolded outwards during demolding to realize complete separation of a gear and the inner wall of a mold cavity, so that the demolding friction resistance is greatly reduced, and the surface of the mold is prevented from being scratched and abraded; the modular mold design supports single replacement, the maintenance cost is remarkably reduced, and the overall service life of the mold is prolonged.

The invention provides a plastic spiral bevel gear tooth surface working area deformation control method and system.The method comprises the steps that a manufacturing parameter model is established according to gear structure parameters and injection molding manufacturing environment parameters of an initial plastic spiral bevel gear mold; the method comprises the following steps: performing precision detection on gear teeth subjected to primary injection molding to obtain error detection data, and performing classification analysis on the error data to generate an error decomposition result; associating an error decomposition result with a manufacturing parameter model, and constructing an error traceability model; determining a target parameter item of each error source and a corresponding influence factor weight according to the error traceability model, and generating an error factor mapping table; according to the correction direction of the error factor mapping table, reverse geometric correction is carried out on the initial plastic spiral bevel gear mold, numerical interval adjustment is carried out on the injection molding process parameters, and a corrected mold structure model and a corrected process parameter set are generated. According to the scheme, the precision of the plastic spiral bevel gear in the injection molding process can be effectively improved.

A manufacturing method of a resin molded member includes: an insert member molding step of building an insert member by stacking layers of a base resin containing continuous fibers by using a 3D printer; an aligning step of aligning the insert member in a cavity of an injection molding mold; and a resin portion molding step of molding a resin portion integrated with the insert member by filling an injection molding resin into the cavity, wherein the insert member is arranged on a surface of a weld portion by the resin portion molding step, and the continuous fibers in the insert member are oriented in direction crossing over the weld portion, the weld portion being formed in the resin portion.

The invention relates to a transmission intermediate shaft gear, and provides a punching and trimming composite die of a transmission intermediate shaft gear and a using method of the punching and trimming composite die in order to solve the problems that an existing punching and trimming die is low in production efficiency, large in labor amount and the like. An annular female die seat and a female die are arranged on the lower surface; opening grooves are symmetrically formed in the two sides of the annular female die base, a transverse plate capable of sliding up and down along the opening grooves transversely penetrates through the position between the two opening grooves, an ejector is arranged on the lower surface of the transverse plate, one end of a punch assembly is connected with the lower surface of the upper die base, and the other end of the punch assembly sequentially penetrates through the transverse plate and the ejector to extend downwards. The lower die assembly comprises a lower die base and a male die. Restraining pull rods are arranged at the positions, corresponding to the two ends of the transverse plate, of the lower die base correspondingly, and the transverse plate can slide up and down along the restraining pull rods and limit the movement stroke of the transverse plate during workpiece retreating. When the upper die assembly and the lower die assembly are completely closed, the transverse plate, the ejector, the forge piece and the male die are in rigid contact.

To prevent welding burrs from blowing out even when a pulley body and a flange body are joined by ultrasonic welding.SOLUTION: A pulley body 2 includes: a first flange protruding radially outward RO at one end in an axial direction J; and a fitting protrusion 4 protruding in the axial direction J at the other end in the axial direction J. A flange body 3 includes: a second flange protruding radially outward RO; and a fitting concavity 5 fitted to the fitting protrusion 4. A radially inward RI portion of a deep surface 5C of the fitting concavity 5 is an inclined surface S1 that inclines so as to approach the one end in the axial direction J as it goes radially inward RI. The radially inward RI portion of a distal end surface 4A of the fitting protrusion 4 has an inclined surface S2 opposite to the inclined surface S1. An outer circumferential surface 6A of the flange body 3, which faces an inner circumferential surface 2C of the pulley body 2, has an endless protrusion A1 continuous in a circumferential direction. In a region including an annular range between the inclined surfaces S1 and S2, there is a junction E made of molten resin.SELECTED DRAWING: Figure 4

A power transmission resin gear 1 includes an annular resin part 3 having, on an outer peripheral surface thereof, teeth 10 of a gear. The annular resin part 3 includes an annular inner resin member 4 that covers an outer periphery of a core metal 2 and an annular outer resin member 5 that covers an outer periphery of the annular inner resin member 4. The annular inner resin member 4 has a plurality of axially downgauged portions 6 arranged at intervals in a circumferential direction. The annular outer resin member 5 has filling portions 8 respectively filling the axially downgauged portions 6 and an axial surface covering portion 9 that is located radially inward RI of a tooth side 10C of the teeth 10 and covers the filling portions 8. According to the power transmission resin gear 1, deformation of a molded product due to forcible removal can be reduced without preparing a special tooth shape.

The invention relates to the technical field of injection molds, and particularly discloses a hydraulic injection mold of a plastic gear, which comprises an upper mold plate and a lower mold plate, and further comprises a dynamic spraying mechanism for spraying the inner surface of a gear mold core, the dynamic spraying mechanism comprises an air cylinder, a reducing sleeve and a storage disc, the air storage cylinder, the reducing sleeve and the material storage disc are all located at the central axis position of the gear mold core; and the auxiliary follow-up mechanism is used for transferring the dynamic spraying mechanism. A dynamic spraying mechanism is arranged, a servo motor is used for driving a driving shaft to drive a driving gear to be in meshing transmission with a driving gear ring, a material storage disc rotates at the position of a center shaft of a gear mold core, meanwhile, a release agent is sprayed from multiple nozzles in multiple directions under the action of air pressure provided by an air storage cylinder, and all parts of the inner surface of the gear mold core are evenly covered; local accumulation or loss of the release agent is avoided, and the problem that the surface smoothness and quality stability of a finished product are affected by uneven spraying is solved.

A plurality of helical grooves (40) of a screw rotor (30) are each divided into a first portion (41) including an end portion on a first end (31) side of a workpiece (35) and a second portion (42) including an end portion on a second end (32) side of the workpiece (35). The first end (31) of the workpiece (35) is attached to a holder (61) of a machine tool (60), and the first portion (41) of each of the helical grooves (40) is finished by cutting. After that, the workpiece (35) is detached from the holder (61) once, and the second end (32) of the workpiece (35) is attached to the holder (61). In this state, the second portion (42) of each of the helical grooves (40) is finished by cutting.

The present invention relates to the technical field of cold extrusion molding, and discloses a cold extrusion molding device for gear production and processing, comprising: an operating table; an extrusion seat, arranged above the operating table; a linear telescopic mechanism, fixed to the top of the operating table, with its telescopic end fixed to the extrusion seat; a molding mechanism, arranged on the top of the operating table, comprising: a mounting base detachably mounted on the top of the operating table, a movable sleeve arranged on the top of the mounting base, a molding die composed of a plurality of mold splicing units, and a contraction drive assembly. The molding mechanism provided by the present invention, by adopting a splicable molding die and a linkage structure, drives the mold units to expand outward during demolding to achieve complete separation of the gear from the inner wall of the mold cavity, greatly reduces demolding friction resistance, and avoids scratches and wear on the mold surface; the modular mold design supports individual replacement of units, significantly reduces maintenance costs and extends the overall life of the mold.

The present application is to provide a method of molding a fiber reinforced resin impeller and a method of molding a fiber reinforced resin gear, which can monitor in real time.In the method of molding the fiber reinforced resin impeller in which fiber reinforced resin is injected from a plurality of gates of a metal mold to mold the fiber reinforced resin impeller which includes a drum and a plurality of blade portions arranged on the outer circumference of the drum, the temperatures of resin are measured by temperature sensors arranged near a plurality of gate portions of the metal mold which correspond to the blade portions; rise timings are measured per one time of temperature waveforms collected by the temperature sensor; and the respective rise timings of the temperature sensors are compared and monitored.

The application relates to the technical field of injection molding and discloses a rapid-forming automobile key precision injection mold and a processing method, which comprise a movable mold and a fixed mold, the upper portion of the movable mold is provided with a stirring device, the stirring device stirs and injects raw materials, and the raw materials are injected into the movable mold; the upper portion of the stirring device is provided with a top plate, a pushing motor is installed at the center position of the top plate, and the pushing motor is used for pushing the stirring device and the movable mold to move up and down; the bottom portion of the fixed mold is provided with a cooling tank, the fixed mold is placed on the cooling tank, and cooling liquid is injected into the cooling tank; the fixed mold is composed of two lower molds, two positioning plates and a supporting plate, the bottom portion of the supporting plate is fixedly installed with a stand column, the stand column is fixedly installed in the cooling tank and is used for supporting the supporting plate, the middle portion of the lower mold is designed as a convex block, the two convex blocks and the supporting plate form a convex structure, the bottom portion of the movable mold is designed as a concave structure, the convex structure and the concave structure form a mold cavity, and the mold cavity is used for automobile key precision injection molding.

This invention discloses a gear mold, an in-cavity sensing structure, a measurement system, and a measurement method. The gear mold includes at least one mold wall constituting the gear mold cavity. The in-cavity sensing structure includes a temperature sensing component and a pressure sensing component. The temperature sensing component includes at least a plurality of probes arranged in an array along key cavity positions. The key cavity positions include at least two of the gear's tooth tip forming area, tooth root forming area, and gate area. The pressure sensing component includes at least a plurality of ejector pins arranged in an array below the gear mold cavity. One end of each ejector pin abuts against a pressure sensing element. The probes are electrically connected via lead wires passing through the mold wall, and the pressure sensing element is electrically connected via a lead wire storage portion pre-embedded in the gear mold. Through an integrated sensing array layout deeply coupled with the gear mold structure, synchronous, direct, and in-situ monitoring of multi-point temperature and distributed pressure within the cavity during the precision gear injection molding process is achieved.

The utility model discloses a PEEK gear rubber coating rotation stopping structure which comprises a base, the upper end of the base is fixedly connected with a vertically-arranged supporting plate, the back face of the supporting plate is fixedly connected with a support arranged in a square shape, the inner bottom of the support is fixedly connected with a servo motor, and the servo motor is fixedly connected with a rotating shaft. The tail end of an output shaft of the servo motor is fixedly connected with a vertically-arranged worm, the upper end of the worm is rotationally connected with the inner top of the support, a worm wheel meshed with the worm is transversely arranged in the support, and a transversely-arranged rotating rod is fixedly inserted into one end of the worm wheel. One end of the rotating rod penetrates through the worm gear and is rotationally connected with the inner side wall of the support, the front face of the supporting plate is fixedly connected with a longitudinally-arranged supporting column, and a circular containing groove is formed in the supporting column. Through ingenious design of mechanisms such as the clamping blocks and the lead screws, effective clamping and rotation stopping of gears of different specifications are achieved, meanwhile, the self-locking anti-loosening characteristic is achieved, the practical performance is remarkably improved, and the application range is widened.

Provided is a lightweight gear (1), a manufacturing method thereof, a manufacturing method of a gear train, and a robot, capable of preventing a resin-made connecting body from generating excessive stress due to torque transmitted in a joint portion with a metal. The lightweight gear (1) includes a tooth portion (2) of a circular ring shape made of metal, a shaft (3) made of metal extending along a center axis (A) of the tooth portion, and a connecting body (4) made of resin connecting the shaft and the tooth portion. A joint portion of the shaft and the connecting body (4) and a joint portion of the tooth portion and the connecting body (4) are provided with a concave-convex (5, 6, 11, 12) engaged in a circumferential direction, and a corner portion of the concave-convex has a rounded corner for stress relaxation. In addition, the manufacturing method of the lightweight gear (1) includes the steps of arranging the tooth portion and the shaft in a molding mold, and simultaneously performing injection molding of the connecting body (4) and joining of the connecting body (4) and the tooth portion and the shaft by injecting molten resin into a cavity of the molding mold.

The present invention discloses a large-module gear cold rolling structure and method, which includes a frame, a feeding device, a first rolling device, and a second rolling device; the first rolling device includes a first flying disc, which is rotatably mounted on the frame, and at the edge of which one or more first wheels are evenly arranged along the circumferential direction, the longitudinal cross-section of the first wheels is rectangular and is used to extrude straight grooves on a workpiece when in use; the second rolling device includes a second flying disc, which is rotatably mounted on the frame, and at the edge of which one or more first wheels are evenly arranged along the circumferential direction, the second wheels are used to extrude straight grooves on the workpiece extruded by the first rolling device into gear grooves when in use. The present invention can effectively prevent the first and second wheels from being damaged by extrusion due to excessive resistance, thereby increasing the service life of the first and second wheels, and thus effectively reducing the processing cost of the gear.

The rolling apparatus (1) is configured to execute a control content for producing a test piece (61) by forming fixed-side streaks (62) and moving-side streaks (63) in a base material (60), and a control content for receiving an inputted positional deviation amount between groove center lines of the moving-side streaks (63) and virtual groove center lines (W) of the fixed-side streaks (62), and then for calculating and outputting a correction movement amount, based on the positional deviation amount, for use in correcting and adjusting the moving flat die (4) at a top dead center thereof. Further, the rolling apparatus (1) is configured to execute a control content for receiving and outputting an input of bite depths(T) of the fixed-side streaks (62) and moving-side streaks (63) in the test piece (61).

A method for producing a gear-tooth system (1) on a component (2) of a shaft / hub connection (3); wherein the component (2) has a first axis of rotation (4) and a gear-tooth system (1); where in the gear-tooth system (1) of the component (2) comprises a plurality of teeth (5),which are disposed next to one another along a circumference direction (6), wherein a tooth interstice (7) is disposed between two teeth (5), in each instance, and each tooth (5) has a head region (8) and a flank region (10), in each instance, between head region (8) and a foot region (9) disposed in the tooth interstice (7), where in the tooth interstice (7) has a tooth gap width (11, 12) in the flank region (10); where in the gear-tooth system (1) has at least a first region (14) and subsequently a second region (15) along an axial direction (13) parallel to the first axis of rotation (4); where in the first region (14) has a first tooth gap width (11)and the second region (15) has a second tooth gap width (12), which is less in comparison. A component of a shaft / hub connection.

The application discloses a kind of full-automatic forming equipment of gear for automobile seat slide rail, including stamping device main body, the tail side of the stamping device main body is fixedly installed with conveying material blocking component, the left side of the conveying material blocking component is fixedly installed with feeding assembly, the middle part of the conveying material blocking component is fixedly installed with workbench, the top of the workbench is fixedly installed with first conveying component, the middle part of the workbench is fixedly installed with point detection component, the right side of the workbench is fixedly installed with second conveying component, the right side of the stamping device main body is fixedly installed with turnover unloading assembly, the right side of the stamping device main body is provided with transfer belt component.The above scheme, in the process of processing gear, gear can be automatically conveyed to stamping device main body, can be automatically completed unloading, and gear is automatically conveyed to subsequent process, improve the degree of automation, and reach the effect of saving labor.

The utility model relates to worm shaft processing technical field, and disclose a kind of worm shaft cold extrusion processing device, including support frame, the top of support frame is fixed with operating box, first extrusion roller is rotatably arranged in operating box, second extrusion roller is movably arranged in operating box. First telescopic rod drives movable frame to move horizontally along sliding slot, realize the adjustment of the distance between first extrusion roller and second extrusion roller, satisfy the processing demand of different specifications worm shaft. In the adjustment process, first spiral bevel gear and spline shaft are slidably connected through the bar slot, to ensure that second extrusion roller can still receive power through gear meshing after displacement. The mechanism of cooperating second mounting rod directly driving first extrusion roller is realized, two rollers are synchronously counter-rotated, the influence of adjustment gap on transmission stability is eliminated, the combination of dynamic adjustment and continuous power transmission makes the device adapt to multi-specification workpieces while maintaining the stability of cold extrusion process.

The utility model relates to a gear injection molding demoulding mechanism in the technical field of demoulding devices. The lower mold comprises a fixed mold plate, a plurality of helical tooth shaping cavities are formed in the upper end of the fixed mold plate, and a demolding device is installed in the middle of the fixed mold plate. After injection molding of the bevel gear is completed, a motor is started to drive a reciprocating lead screw to rotate, and a spiral groove in the lower end of the reciprocating lead screw is matched with a first lead screw nut to drive a second fixing plate to move downwards, so that a shaft rod synchronously moves downwards, and the upper end of the shaft rod is conveniently separated from a middle hole of the bevel gear; a spiral groove in the upper end of a reciprocating lead screw is matched with a second lead screw nut to drive a third fixing plate to move upwards, a connecting plate is matched with a connecting ring to push a connecting block upwards, a sliding block synchronously slides in a groove cavity of an inclined groove to drive the connecting block to rotate, and a pushing block rotates while pushing a bevel gear upwards; and the bevel gear can be conveniently separated from a cavity body of the bevel gear shaping cavity, so that teeth of the bevel gear are protected, and the teeth are prevented from being damaged.

The invention relates to the field of stamping equipment, in particular to alloy chain wheel outer tooth stamping equipment. The invention provides alloy chain wheel outer tooth stamping equipment which comprises stamping equipment, hydraulic cylinders which are symmetrically distributed are installed at the top of the stamping equipment, an upper stamping die is fixedly connected between the ends of piston rods of the hydraulic cylinders, a lower stamping die is arranged on a workbench of the stamping equipment, and a piece ejecting mechanism is arranged in the lower stamping die. Transportation assemblies symmetrically distributed along the stamping lower die are further arranged on a workbench of the stamping equipment, a guide frame is fixedly connected to the stamping equipment, a movable frame is connected to the guide frame in a sliding mode, and the movable frame is provided with a clamping assembly. The stamping upper die is in linkage with the clamping assembly, synchronous stamping and material taking operation is achieved, and manual material taking is eliminated; the collecting rod and the buffer disc ensure soft landing and stacking soft contact of the chain wheel, and the damage rate is reduced; the equipment realizes full-process automatic closed loop, improves the productivity and qualified rate, and reduces the labor cost.

To provide an improved extruder screw.SOLUTION: An extruder screw consisting of a screw shaft (1) and a plurality of screw elements detachably mountable or mounted on the screw shaft (1), wherein the screw shaft (1) has an external gear (6) and the screw elements have an internal gear meshing with the external gear (6), characterized in that the outer gear (6) comprises a plurality of depressions (4) extending along the circumference in an offset manner over its axial length while forming individual gear rims (3) extending along the circumference, which depressions (4) are spaced apart from one another by a minimum length (a), wherein the inner gear of each screw element protrudes into the depressions (4) at both axial ends such that the ends of the inner gear do not mesh with the outer gear (6).SELECTED DRAWING: Figure 1

The invention discloses a linear gear two-way rolling device and method capable of achieving automatic discharging, and relates to the technical field of gear machining, and the linear gear two-way rolling device comprises a guide rail movement module arranged on a base and connected with a first rolling mold; the second rolling die is fixedly arranged on the base, and the first rolling die and the second rolling die are parallel in the length direction; a rolling gap is defined among the automatic feeding mechanism, the first rolling die and the second rolling die, and the automatic feeding mechanism is used for conveying blanks to the rolling gap; the rolling dies adopt trapezoidal gear hobs, the first rolling die can move forwards or reversely relative to the second rolling die so as to roll blanks forwards and reversely in a reciprocating mode, the two-way repeated rolling mode is beneficial to high-quality forming of tooth profiles, the forming problems that lugs are too large, the tooth crest filling degree is small and the like are solved, and the product quality is improved. The height of the formed tooth profile is close to that of a target line gear, meanwhile, the application range of equipment is widened, and universality is achieved.

The utility model relates to a rotary demolding mechanism. The rotary demolding mechanism comprises a rear mold core, a workpiece, a bearing and an ejector rod, a plurality of tooth grooves are evenly distributed in the inner wall of a cavity of the rear mold core in the circumferential direction. The bearing sleeve is arranged on the outer side of the rear mold core; the workpiece comprises a cylindrical tooth bone, a connecting part is arranged on the tooth bone, and first oblique teeth are arranged on the outer side surface of the connecting part; second oblique teeth are arranged on the surfaces of the outer sides of the tooth bones. The ejector rod drives the workpiece to axially move, so that the workpiece drives the rear mold core to rotate and is separated from the rear mold core along the tooth groove; the rotary demolding mechanism is ingenious in design, the ejector rod supports the rotary motion of the rear mold core, so that the rear mold core can be driven by a workpiece to rotate, friction between the rear mold core and an external mounting plate is reduced, rotation is smoother, the structure transmits rotating torque through helical tooth meshing, and through combination of bidirectional helical tooth guiding of the tooth bone, the demolding effect is improved. The demolding friction resistance is effectively eliminated, the product is prevented from being damaged by dragging, and the demolding device has the advantages of simple structure, high synchronism and low maintenance cost.

The utility model relates to the field of silica gel key injection molding, in particular to a silica gel key injection mold capable of automatically demolding. The silica gel key injection mold capable of achieving automatic demolding comprises a base, a lower mold, air cylinders, supporting frames, an upper mold and the like, the two air cylinders are distributed front and back and installed on the front side and the rear side of the middle of the base, the lower mold is fixedly connected between telescopic rods of the two air cylinders, and the two supporting frames are distributed front and back and fixedly connected to the front side and the rear side of the upper portion of the base. The upper die is installed between the upper portions of the two supporting frames. The first demolding assembly uniformly sprays a demolding agent through a nozzle to ensure that the surface of the connected silica gel key is uniformly covered and demolding is easy, the second demolding assembly drives an ejector block to rotate anticlockwise through a rotating shaft to roll the connected silica gel key down from a lower mold, the demolding process is stable and reliable, the whole demolding process is high in automation degree, and the demolding efficiency is improved. The complexity and the labor intensity of manual operation are reduced, and the production efficiency and the product quality are improved.