CN112123113A

CN112123113A - Automatic sharpening equipment for tungsten needle random feeding continuous work

Info

Publication number: CN112123113A
Application number: CN202011127094.0A
Authority: CN
Inventors: 不公告发明人
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-21
Filing date: 2020-10-21
Publication date: 2020-12-25

Abstract

The invention belongs to the technical field of welding consumable maintenance equipment, and relates to automatic sharpening equipment for random feeding and continuous working of tungsten needles. The charging rotating synchronous belt drives the friction wheel to rotate under the thrust of the charging rotating cylinder so that the vertical planes of the two half jackets are perpendicular to the left and right directions. The two charging tensioning plates pull the two half sliding sleeves towards two sides, the two half sliding sleeve T-shaped tenons drag the two half clamping sleeves, and the two half clamping sleeve half clamping holes are far away from each other; a worker places an unground tungsten needle between the two half-clamping holes of the half-clamping sleeve and above the lower loading supporting plate through the guide hole. The fast rotation driving synchronous belt drives the friction wheel, the half jacket and the tungsten needle to be combined to rotate at a high speed, the tungsten needle is close to the two grinding inclined planes, and the lower end of the tungsten needle is ground into a conical end. The tungsten needle can be put in the main chain in the idle time period during the operation of the invention, the invention does not need special personnel for guard and automatic work, saves manpower, prevents time waste, has simple and convenient operation, adopts anti-shake measures, can improve the grinding speed and is not easy to break the tungsten needle.

Description

Automatic sharpening equipment for tungsten needle random feeding continuous work

Technical Field

The invention belongs to the technical field of welding consumable maintenance equipment, relates to tungsten needle maintenance equipment, and particularly relates to automatic sharpening equipment for tungsten needles in random feeding and continuous working.

Background

Before the tungsten needle used for argon arc welding is used, one end of the tungsten needle needs to be sharpened, the ground tungsten needle 0 comprises a conical part 01 and a straight rod part 02, and the conical angle K of the conical part is 50 degrees. In many cases, a tungsten needle is manually held close to a grinding wheel rotating at a high speed for grinding, and the tungsten needle is rotated while grinding while grasping an angle and a grinding amount empirically. The shape of the ground conical part 01 of the tungsten needle is difficult to ensure to be consistent, and particularly the conical angle K is difficult to ensure to be consistent, so that the using effect is influenced. The tungsten needle 0 is made of brittle and hard materials, the single-side grinding is too tight by a grinding wheel, the tungsten needle 0 is possibly brittle and broken, and the efficiency of the grinding by the grinding wheel is too low. When the hand and the face of a person are ground manually, the hand and the face are close to the ground part, and the fallen sand, the grinding wheel fragments or the broken tungsten needle may splash to the hand and the face of the person, so that the risk is high. The Chinese invention patent application 202011067273.X describes an unattended automatic sharpening device for batch feeding and blanking of tungsten needles, although the operation process is unattended, however, the grinding production of starting a batch of tungsten needles still needs someone to press the starting key, the tungsten needles finished by grinding in the previous batch are used up, the next worker holds the blunt tungsten needles to replace the tungsten needles which are not finished by grinding, the worker often starts the starting key to process the next batch of tungsten needles, the worker needs to wait for a period of time, even if the processing of the tungsten needle conical part is finished in the processing process, the tungsten needle conical part can not be taken down independently, because all tungsten needles all rotate at high speed simultaneously, this a batch of tungsten needle circular cone portion is all processed and is accomplished, and equipment automatic shutdown just can take off, takes inconveniently, can make this workman master waste a period of time.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide the automatic sharpening equipment for the random feeding and continuous working of the tungsten needle, which can put the tungsten needle in the time period of the stoppage of the main chain in the running process, does not need special personnel for guarding and automatic working, saves manpower, prevents time waste, is simple and convenient to operate, adopts anti-shaking measures, can improve the sharpening speed and is not easy to break the tungsten needle.

The invention is realized by the following technical scheme: an automatic sharpening device for tungsten needle random feeding continuous work comprises a chain assembly, a redirection chain wheel assembly, a driving chain wheel assembly, a rack and a servo motor; the redirection chain wheel assembly comprises two redirection chain wheels and a redirection chain wheel shaft, the two redirection chain wheels are respectively and fixedly connected with the redirection chain wheel shaft, and the redirection chain wheel shaft is connected with the rack through a rotating pair; the driving chain wheel assembly comprises two driving chain wheels and a driving chain wheel shaft, the two driving chain wheels are fixedly connected with the driving chain wheel shaft respectively, and the driving chain wheel shaft is connected with the rack through a rotating pair; the driving chain wheel assembly is arranged at the front edge of the redirection chain wheel assembly; the shell of the servo motor is fixedly connected with the frame, and the output shaft of the servo motor is fixedly connected with the driving chain wheel shaft; the chain assembly comprises a main chain, and the main chain comprises a left chain and a right chain; the specifications of the left chain and the right chain are the same; the left direction-changing chain wheel and the left driving chain wheel are aligned front and back, and are respectively meshed with the left chain; the right direction-changing chain wheel and the right driving chain wheel are aligned front and back, and the right direction-changing chain wheel and the right driving chain wheel are respectively meshed with the right chain; the grinding machine is characterized by also comprising a charging and turning component pair, a charging component, a grinding component and a turning and discharging component; the chain assembly further comprises a plurality of clamping assemblies; the clamping assembly comprises a first half jacket, a second half jacket, a first half sliding sleeve, a second half sliding sleeve, a guide rod assembly, four pressure springs of the half sliding sleeves, two pressure springs of the half jackets and a friction wheel; the guide rod assembly comprises two clamping guide rods and two connecting chain plates, one of the two connecting chain plates is arranged on the left side of the other connecting chain plate, the axial lead of the two clamping guide rods is arranged along the left-right horizontal direction, two ends of each clamping guide rod are fixedly connected with the two connecting chain plates respectively, and one of the two clamping guide rods is arranged in front of the other connecting chain plate; the middle part of the clamping guide rod is provided with a clamping guide rod middle boss; the two connecting chain plates are respectively connected to the left chain and the right chain, and the plurality of clamping assemblies are distributed at equal intervals along the circumferential direction of the main chain; the first half sliding sleeve is provided with a first half sliding sleeve inner cylindrical surface, the first half sliding sleeve inner cylindrical surface is a half inner cylindrical surface, the axial lead of the first half sliding sleeve inner cylindrical surface is vertical, and the opening faces the right; a quadrant point position of the inner cylindrical surface I of the half sliding sleeve close to the left side is provided with a half sliding sleeve T-shaped tenon I; a first half sliding sleeve positioning surface and a first half sliding sleeve pull bearing surface which face rightwards are arranged on the first half sliding sleeve; the half sliding sleeve I is provided with a half sliding sleeve guiding plane I facing to the left; the bearing surface of the half sliding sleeve is closer to the left than the inner cylindrical surface of the half sliding sleeve; a first half sliding sleeve guide hole is formed in a first half sliding sleeve positioning surface, the central line of the first half sliding sleeve guide hole is arranged along the left-right horizontal direction, the first half sliding sleeve guide hole is through from left to right, and the left end of the first half sliding sleeve guide hole is opened on a first half sliding sleeve guide plane; a second half sliding sleeve inner cylindrical surface is arranged on the second half sliding sleeve, a second half inner cylindrical surface is arranged on the second half sliding sleeve inner cylindrical surface, the axial lead of the second half sliding sleeve inner cylindrical surface is vertical, and the opening faces the left; a quadrant point position of the inner cylindrical surface II of the half sliding sleeve, which is close to the right side, is provided with a half sliding sleeve T-shaped tenon II; the half sliding sleeve II is provided with a half sliding sleeve positioning surface II facing the left and a half sliding sleeve pull-bearing surface II; a second half sliding sleeve guide plane facing rightwards is arranged on the second half sliding sleeve; the bearing surface II of the half sliding sleeve is closer to the right than the inner cylindrical surface II of the half sliding sleeve; a second half sliding sleeve guide hole is formed in the second half sliding sleeve positioning surface, the central line of the second half sliding sleeve guide hole is arranged along the left horizontal direction and the right horizontal direction, the second half sliding sleeve guide hole is through from left to right, and the right end of the second half sliding sleeve guide hole is opened on the second half sliding sleeve guide plane; the two half sliding sleeve guide holes I are respectively in sliding fit with shaft sections of the two clamping guide rods, which are positioned on the left side of the boss in the clamping guide rod, a half sliding sleeve pressure spring on the left side is sleeved on the clamping guide rod, the left end of the half sliding sleeve pressure spring on the left side presses a connecting chain plate on the left side, the right end of the half sliding sleeve pressure spring on the left side presses a half sliding sleeve guide plane I, and a half sliding sleeve positioning plane I presses the left end face of the boss in the clamping guide; two half sliding sleeve guide holes II are respectively in sliding fit with shaft sections of the two clamping guide rods, which are positioned on the right side of the protruding table in the clamping guide rods, the right half sliding sleeve pressure spring is sleeved on the clamping guide rods, the right end of the right half sliding sleeve pressure spring presses the right connecting chain plate, the left end of the right half sliding sleeve pressure spring presses the half sliding sleeve guide plane II, and the half sliding sleeve positioning plane II presses the right end face of the protruding table in the clamping guide rods; the first half sliding sleeve inner cylindrical surface and the second half sliding sleeve inner cylindrical surface are paired together to form a complete inner cylindrical surface; the semi-jacket first is a half revolving body, the revolving axis line of the semi-jacket first is arranged along the vertical direction, the semi-jacket first is provided with an outer semi-cylindrical surface first and a vertical semi-jacket vertical plane first, the semi-jacket vertical plane first is vertical to the left-right direction, the outer semi-cylindrical surface first is provided with a semi-annular semi-jacket T-shaped groove first, and the semi-jacket vertical plane first is provided with a vertical semi-jacket hole first; a half jacket guide rod is arranged on the half jacket vertical plane I, the axis line of the half jacket guide rod is arranged along the left-right horizontal direction, the first end of the half jacket guide rod is arranged on the half jacket vertical plane I, and the second end of the half jacket guide rod is provided with a half jacket stop block; the second half jacket is a half revolving body, the revolving axis line of the second half jacket is arranged along the vertical direction, the second half jacket is provided with a second outer semi-cylindrical surface and a second vertical half jacket vertical plane, the second half jacket vertical plane is vertical to the left and right direction, the second outer semi-cylindrical surface is provided with a second semi-annular half jacket T-shaped groove, and the second half jacket vertical plane is provided with a second vertical half jacket hole; a half jacket guide hole is formed in the half jacket vertical plane II, the first end opening of the half jacket guide hole is formed in the half jacket vertical plane II, and the second end opening of the half jacket guide hole is communicated with the compression spring chamber; the first half jacket vertical plane and the second half jacket vertical plane are opposite, the guide rod of the half jacket is in sliding fit with the guide hole of the half jacket, a pressure spring of the half jacket is sleeved on the guide rod of the half jacket and is positioned in a compression spring chamber, one end of the pressure spring of the half jacket is pressed against the end surface of the second end of the guide hole of the half jacket, the other end of the pressure spring of the half jacket is pressed against a stop block of the half jacket, the opening of the first half jacket hole is opposite to the opening of the second half jacket hole, under the pressure action of a pressure spring of the half jacket, the first half jacket and the second half jacket are close to each other, the first half jacket half clamping hole and the second half jacket half clamping hole clamp a straight rod part of the tungsten needle positioned in the middle together, the first outer semi-cylindrical surface and the second outer semi-cylindrical surface form a complete outer cylindrical surface, and the outer cylindrical surface formed by the first outer semi-cylindrical surface and the second outer semi-cylindrical surface is matched with the inner cylindrical surface formed by the first half sliding sleeve inner cylindrical surface and the second half sliding sleeve inner cylindrical surface to form a rotating pair; the first half-jacket T-shaped groove and the second half-jacket T-shaped groove are paired together to form an annular T-shaped groove, and the first half-sliding sleeve T-shaped tenon and the second half-sliding sleeve T-shaped tenon are respectively in sliding fit with the annular T-shaped groove; the friction wheel is provided with an outer cylindrical surface, the axial lead of the friction wheel is arranged along the vertical direction, a guide hole which is through up and down is arranged at the center of the friction wheel, the diameter of the upper end of the guide hole is large, and the diameter of the lower end of the guide hole is small, so that a tungsten needle can be placed from the upper end of the guide hole; the lower end of the friction wheel is fixedly connected with the upper end of the first half jacket, and the axial lead of the friction wheel is superposed with the axial lead of the first half jacket; the lower end of the guide hole is communicated with the upper end of a hole formed by the half clamping hole I of the half clamping sleeve and the half clamping hole II of the half clamping sleeve; removing a material from the left-right symmetrical positions of the upper end of the friction wheel to form friction wheel guide surfaces, wherein the friction wheel guide surfaces are vertical to the left-right direction; the servo motor drives the chain assembly to intermittently operate through the driving chain wheel assembly, the upper edge of the main chain horizontally translates from back to front, and the lower edge of the main chain horizontally translates from front to back; the clamping assembly intermittently horizontally translates from back to front at the lower side of the main chain along with intermittently horizontally translating from back to front at the upper side of the main chain; the charging turning component pair comprises two charging turning components; the charging turning assembly comprises a charging turning cylinder, a charging turning support, a charging turning direction-changing wheel, a charging turning driving synchronous wheel, a charging turning motor, a charging turning push plate and a charging turning synchronous belt; the two charging turning assemblies are distributed on the left side and the right side of the motion trail of the clamping assembly on the main chain in a bilateral symmetry manner; the charging rotating cylinder is a cylinder with a guide rod; the charging turning cylinder comprises a charging turning cylinder body and a charging turning cylinder piston rod; the charging turning cylinder body is fixedly connected with the frame; the charging turning support is fixedly connected with a piston rod of a charging turning cylinder; the charging turning direction-changing wheel is connected with the charging turning support through a rotating pair; the shell of the charging turning motor is fixedly connected with the charging turning bracket; an output shaft of the charging rotation motor is fixedly connected with a charging rotation driving synchronous wheel; the charging turning direction-changing wheel and the charging turning driving synchronous wheel are respectively meshed with the charging turning synchronous belt; the charging rotation direction-changing wheel drives the synchronous wheel to be closer to the motion track of the clamping assembly than the charging rotation direction-changing wheel; the charging turning push plate is fixedly connected with the charging turning support; the loading rotating and positive pushing plate is provided with a loading rotating and positive pushing plane which is vertical to the left and right direction, the loading rotating and positive pushing plate is positioned below the loading rotating and positive direction changing wheel, the loading rotating and positive pushing plane is tangent to a quadrant point which is the closest to the motion track of the clamping assembly and is arranged on an arc section which is wound on the loading rotating and positive direction changing wheel by the loading rotating and positive synchronous belt, and a loading rotating and positive pushing plate notch is arranged at a position which is opposite to the tangent point on the loading rotating and positive pushing plane up and down; the clamping assembly is stopped between two quadrant points of an arc section of the charging rotating synchronous belt wound on the charging rotating reversing wheel and closest to the motion trail of the clamping assembly; the two charging rotating motors simultaneously drive the two charging rotating driving synchronous wheels, the two charging rotating direction-changing wheels and the two charging rotating synchronous belts to rotate, and when viewed from top to bottom, the two charging rotating direction-changing wheels rotate in the anticlockwise direction, so that the two arc sections of the charging rotating synchronous belts wound on the charging rotating direction-changing wheels rotate in the anticlockwise direction; the two charging turning cylinders extend simultaneously to drive the two sets of charging turning supports, the charging turning direction-changing wheel, the charging turning driving synchronous wheel, the charging turning motor, the charging turning push plate and the charging turning synchronous belt to move horizontally and oppositely; two charging rotating synchronous belts are wound on a quadrant point of an arc section on a charging rotating reversing wheel, which is closest to the motion track of a clamping assembly, and simultaneously press an outer cylindrical surface of a friction wheel, and drive the friction wheel to rotate clockwise, a combination of a half jacket I, a half jacket II, a half jacket pressure spring and the friction wheel rotates along with the rotation, a charging rotating air cylinder is blocked and stops extending until edges of the outer cylindrical surface of the friction wheel and a guide surface of the friction wheel, which are intersected, are attached to the charging rotating synchronous belts, the operation is continued, the edges of the outer cylindrical surface of the friction wheel and the guide surface of the friction wheel, which are intersected, slide along the charging rotating pushing plane, the charging rotating synchronous belts temporarily leave the friction wheel, the two charging rotating synchronous belts continue extending simultaneously until the charging rotating pushing plane and the guide surface of the friction wheel are attached together, and the direction of the guide surface of the friction wheel is vertical to the left-right direction, at the moment, the directions of the first half jacket vertical plane and the second half jacket vertical plane are both vertical to the left-right direction; the charging rotating and centering motor stops rotating, and the charging rotating and centering cylinder stops thrust and keeps at the position; in practical application, the stroke position of the charging turning cylinder can be detected by a stroke sensor; the charging assembly comprises two pairs of charging tensioners, a charging lower supporting plate and two charging centralizing guide plates; the two charging centralizing guide plates are respectively and fixedly connected with the rack, the right side surface of the charging centralizing guide plate on the left side and the left side surface of the charging centralizing guide plate on the right side are in sliding fit with the guide surfaces of the two friction wheels, so that the combined rotation of the half jacket I, the half jacket II, the half jacket pressure spring and the friction wheels is prevented, and the half jacket I and the half jacket II are ensured to be on the left and the other on the right; two charging tensioners in the pair of charging tensioners are bilaterally symmetrical and are respectively positioned on the left side and the right side of the motion trail of the clamping component on the upper side of the main chain; the charging tensioner comprises a charging tensioning cylinder and a charging tensioning plate; the charging tensioning cylinder comprises a charging tensioning cylinder body and a charging tensioning cylinder piston rod; the charging tensioning cylinder body is fixedly connected with the frame; the charging tensioning plate is fixedly connected with a piston rod of a charging tensioning cylinder; the charging lower supporting plate is positioned right below the combined holes of the half clamping hole I of the half clamping sleeve and the half clamping hole II of the half clamping sleeve; two charging tensioning cylinders of a pair of charging tensioners contract, two charging tensioning plates simultaneously lean against and pull a first half sliding sleeve and a second half sliding sleeve towards two sides, the first half sliding sleeve and the second half sliding sleeve respectively move back to back along a clamping guide rod, a first half sliding sleeve T-shaped tenon and a second half sliding sleeve T-shaped tenon are far away from each other, the first half clamping sleeve and the second half clamping sleeve are respectively dragged by the first half clamping sleeve T-shaped groove and the second half clamping sleeve T-shaped groove, the first half clamping sleeve and the second half clamping sleeve overcome the elastic pressure of a compressed spring of the half clamping sleeve and are far away from each other along the guide rod of the half clamping sleeve, a first half clamping hole of the half clamping sleeve and a second half clamping hole of the half clamping sleeve are far away from each other, at the moment, an unground tungsten needle can be placed between the first half clamping hole of; the mutual distance is not symmetrical, but the moving distance of the half jacket II is larger, and the moving distance of the half jacket I is smaller or not movable because the guide surface of the friction wheel is limited between the two charging righting guide plates; the distance between the half clamp hole I of the half clamp sleeve and the half clamp hole II of the half clamp sleeve is not large and is only 1-2 mm; the charging assembly is positioned right in front of the charging turning assembly pair; the grinding assembly comprises a quick-rotating driving assembly, two grinding assembly guide plates, a grinding plate pair, a grinding push-up cylinder and a grinding push-up linear guide rail; the two grinding assembly guide plates are positioned on the left side and the right side of the motion trail of the clamping assembly on the main chain; the two grinding assembly guide plates are respectively fixedly connected with the rack; the right side surface of the left grinding assembly guide plate is tightly attached to the half sliding sleeve guide plane I, the left side surface of the right grinding assembly guide plate is tightly attached to the half sliding sleeve guide plane II, the clamping assembly moves horizontally under the guide effect of the two grinding assembly guide plates, the clamping assembly can be prevented from shaking, and the inner cylindrical surface I of the half sliding sleeve and the inner cylindrical surface II of the half sliding sleeve are prevented from being away from each other; the left fast rotation driving assembly comprises a fast rotation driving support plate, a fast rotation driving synchronous belt, a fast rotation driving synchronous wheel, a fast rotation driving bend wheel, a fast rotation driving motor, a fast rotation driving slide block and a fast rotation driving friction plate; the fast rotation driving slide block is fixedly connected with the fast rotation driving support plate; the grinding and tightening linear guide rail on the left side is fixedly connected with the grinding assembly guide plate on the left side, and the grinding and tightening linear guide rail is arranged along the left-right horizontal direction; the fast-rotation driving slide block and the grinding and pushing linear guide rail form a linear guide rail pair; the grinding and pushing cylinder comprises a grinding and pushing cylinder body and a grinding and pushing cylinder piston rod; the grinding and pushing cylinder body is fixedly connected with the grinding component guide plate; the grinding and pushing cylinder piston rod is fixedly connected with the fast-rotating driving support plate; the shell of the fast-rotation driving motor is fixedly connected with the fast-rotation driving support plate; the fast-rotation driving synchronous wheel is fixedly connected with an output shaft of the fast-rotation driving motor; the three fast-rotation driving direction-changing wheels are respectively connected with the fast-rotation driving support plate through revolute pairs; the fast-rotation driving synchronous belt is simultaneously tensioned and wrapped on the three fast-rotation driving direction-changing wheels and the fast-rotation driving synchronous wheel, and the fast-rotation driving synchronous belt is meshed with the fast-rotation driving synchronous wheel; the axial leads of the three fast rotation driving direction-changing wheels and the fast rotation driving synchronizing wheel are all arranged along the vertical direction; one section of the fast rotation driving synchronous belt is arranged along the front-back horizontal direction and is a working edge, and the working edge is positioned at the rightmost side compared with other sections of the fast rotation driving synchronous belt; the quick rotation driving friction plate is fixedly connected with the quick rotation driving support plate; the fast-rotation driving friction plate is provided with a vertical plane, the vertical plane of the fast-rotation driving friction plate is tightly attached to the left side of the first working edge of the fast-rotation driving synchronous belt and used for helping the fast-rotation driving synchronous belt bear the transverse force from the right side, and sliding friction is formed between the fast-rotation driving synchronous belt and the vertical plane of the fast-rotation driving friction plate; the right fast rotation driving assembly and the left fast rotation driving assembly have the same structure and are bilaterally symmetrical, and the left fast rotation driving assembly and the right fast rotation driving assembly are positioned on the left side and the right side of the motion trail of the clamping assembly on the main chain; the grinding plate pair comprises a left grinding plate and a right grinding plate; the left grinding plate and the right grinding plate are respectively fixedly connected with the frame; the right side surface of the left grinding plate is a left grinding inclined surface, first contour lines obtained by sectioning the left grinding inclined surface by a section plane vertical to the front-back direction are distributed along the left upper-right lower direction, the left grinding inclined surface is not vertical to the front-back direction, but the front end of the left grinding inclined surface is close to the right, and the rear end of the left grinding inclined surface is close to the left; the left side surface of the right grinding plate is a right grinding inclined surface, second contour lines obtained by sectioning the right grinding inclined surface by a section plane vertical to the front-back direction are distributed along the upper right-lower left direction, the right grinding inclined surface is not vertical to the front-back direction, but the front end of the right grinding inclined surface is close to the left, and the rear end of the right grinding inclined surface is close to the right; a chamfer is arranged between the lower surface of the left grinding plate and the left grinding inclined surface, the left grinding inclined surface and the right grinding inclined surface are not contacted at the front ends but are avoided through the chamfer, a gap is always formed between the left grinding inclined surface and the right grinding inclined surface, so that the distance can be adjusted during assembly, and grinding dust can fall through the gap and cannot accumulate; the included angle K' between the contour line of the foremost end of the left grinding inclined plane and the contour line of the foremost end of the right grinding inclined plane is equal to the conical angle K of the tungsten needle; the grinding assembly is positioned right in front of the charging assembly; the combination of the clamping assembly and the tungsten needle moves forwards from back along with the main chain, the first half sliding sleeve guide plane and the second half sliding sleeve guide plane have the functions of guiding the clamping assembly, preventing shaking and preventing the first half sliding sleeve inner cylindrical surface and the second half sliding sleeve inner cylindrical surface from being away from each other, and when viewed from top to bottom, two fast-rotating driving motors of the two fast-rotating driving assemblies are started clockwise at the same time to drive the fast-rotating driving synchronous belt to run at high speed at equal linear speed; the working edge of the left quick rotation driving synchronous belt translates from front to back, the grinding pushing cylinder on the left drives the quick rotation driving assembly on the left to translate rightwards, and the working edge of the left quick rotation driving synchronous belt is close to the left side of the outer cylindrical surface of the friction wheel; the working edge of the right quick rotation driving synchronous belt translates from back to front, the grinding and pushing cylinder on the right drives the quick rotation driving assembly on the right to translate left, and the working edge of the right quick rotation driving synchronous belt is close to the right side of the outer cylindrical surface of the friction wheel; the two fast rotation driving synchronous belts drive the friction wheel, the half jacket I, the half jacket II, the half jacket pressure spring and the tungsten needle to rotate anticlockwise at high speed; the combination of the clamping assembly and the tungsten needle slowly translates from back to front along with the main chain, the lower end of the tungsten needle rotating at a high speed gradually approaches to the left grinding inclined surface and the right grinding inclined surface, and grinding action is generated, and when the combination of the clamping assembly and the tungsten needle leaves the left grinding inclined surface and the right grinding inclined surface from the front end, the lower end of the tungsten needle is converted into a conical end; the two grinding inclined surfaces of the left grinding inclined surface and the right grinding inclined surface are used for grinding simultaneously, so that the grinding speed can be improved, the left side and the right side of the tungsten needle are stressed simultaneously, the stress is balanced, and the tungsten needle is not easy to break; the positive rotating and discharging assembly comprises two discharging tensioners and two discharging positive rotating assemblies; the unloading turning component comprises an unloading turning cylinder, an unloading turning support, an unloading turning direction-changing wheel, an unloading turning driving synchronous wheel, an unloading turning motor, an unloading turning push plate and an unloading turning synchronous belt; the two unloading rotation assemblies are symmetrically distributed on the left side and the right side of the motion trail of the clamping assembly on the lower side of the main chain; the discharging and correcting cylinder is a cylinder with a guide rod; the discharging and correcting cylinder comprises a discharging and correcting cylinder body and a discharging and correcting cylinder piston rod; the discharging turning cylinder body is fixedly connected with the frame; the unloading turning support is fixedly connected with a piston rod of the unloading turning cylinder; the unloading turning direction-changing wheel is connected with the unloading turning support through a rotating pair; the shell of the unloading turning motor is fixedly connected with the unloading turning bracket; the output shaft of the unloading rotation motor is fixedly connected with the unloading rotation driving synchronous wheel; the unloading turning synchronous belt is tightly wrapped on the unloading turning driving synchronous wheel and the unloading turning bend wheel; the unloading rotation driving synchronous wheel is meshed with the unloading rotation synchronous belt; the unloading rotation direction-changing wheel drives the synchronous wheel to be closer to the motion track of the clamping assembly than the unloading rotation direction-changing wheel; the unloading turning push plate is fixedly connected with the unloading turning support; the unloading forward-rotating push plate is provided with an unloading forward-rotating push plane, the unloading forward-rotating push plane is perpendicular to the left and right direction, the unloading forward-rotating push plate is positioned above the unloading forward-rotating bend wheel, the unloading forward-rotating push plane is tangent to a quadrant point, closest to the motion trail of the clamping assembly, of an arc section, wrapped on the unloading forward-rotating bend wheel, of the unloading forward-rotating synchronous belt, and a unloading forward-rotating push plate notch is arranged at a position, opposite to the tangent point, on the unloading forward-rotating push plane; the clamping assembly is stopped between two quadrant points of an arc section of the unloading rotating synchronous belt wrapped on the unloading rotating reversing wheel and the closest to the motion trail of the clamping assembly; the two unloading rotation-positive motors simultaneously drive the two unloading rotation-positive driving synchronous wheels, the two unloading rotation-positive direction-changing change wheels and the two unloading rotation-positive synchronous belts to rotate, and when the two unloading rotation-positive direction-changing change wheels rotate in the counterclockwise direction, viewed from top to bottom, the two unloading rotation-positive direction-changing change wheels rotate in the counterclockwise direction, so that the two arc sections of the unloading rotation-positive synchronous belts wrapped on the unloading rotation-positive direction-changing change wheels rotate in the counterclockwise direction; the two unloading turning cylinders extend simultaneously to drive the two sets of unloading turning brackets, the unloading turning direction-changing wheels, the unloading turning driving synchronous wheels, the unloading turning motor, the unloading turning push plate and the unloading turning synchronous belt to move horizontally and oppositely; two discharging rotating and centering synchronous belts are wound on a quadrant point, which is closest to the motion track of the clamping assembly, of an arc section on the discharging rotating and centering bend wheel, and simultaneously press an outer cylindrical surface of the friction wheel and drive the friction wheel to rotate clockwise, a combination of the half jacket I, the half jacket II, the half jacket pressure spring and the friction wheel rotates along with the rotation, the discharging rotating and centering cylinder is blocked and stops extending until edges, which are intersected with a guide surface of the friction wheel, of the outer cylindrical surface of the friction wheel are attached to the discharging rotating and centering synchronous belts, the operation is continued, the edges, which are intersected with the guide surface of the friction wheel, of the outer cylindrical surface of the friction wheel slide along a discharging rotating and pushing plane, the discharging rotating and centering synchronous belts temporarily leave the friction wheel, the two discharging rotating and centering cylinders simultaneously extend until the discharging rotating and pushing plane and the guide surface of the friction wheel are attached together, and the direction of the guide surface of the friction, at the moment, the directions of the first half jacket vertical plane and the second half jacket vertical plane are both vertical to the left-right direction; the unloading rotation motor stops rotating; two discharging tensioners in the pair of discharging tensioners are bilaterally symmetrical and are respectively positioned on the left side and the right side of the motion trail of the clamping component below the main chain; the two discharging tensioners are respectively positioned under the two discharging rotating assemblies; the discharging tensioner comprises a discharging tensioning cylinder and a discharging tensioning plate; the discharging tensioning cylinder comprises a discharging tensioning cylinder body and a discharging tensioning cylinder piston rod; the discharging tensioning cylinder body is fixedly connected with the frame; the discharging tensioning plate is fixedly connected with a discharging tensioning cylinder piston rod; two unloading rotary cylinders contract simultaneously to enable two unloading rotary pushing planes to leave friction wheel guide surfaces on two sides simultaneously, two unloading tensioning cylinders contract simultaneously, two unloading tensioning plates simultaneously lean against and pull a first half sliding sleeve and a second half sliding sleeve towards two sides, the first half sliding sleeve and the second half sliding sleeve respectively translate along a clamping guide rod in a back-to-back mode, a first half sliding sleeve T-shaped tenon and a second half sliding sleeve T-shaped tenon are far away from each other, a first half clamping sleeve and a second half clamping sleeve are respectively dragged through the first half clamping sleeve T-shaped groove and the second half clamping sleeve T-shaped groove, the first half clamping sleeve and the second half clamping sleeve overcome the elastic pressure of a pressure spring of the half clamping sleeve and are far away from each other along the guide rod of the half clamping sleeve, a first half clamping hole and a second half clamping hole of the clamping sleeve are far away from each other, and a ground tungsten needle falls off from a space between the first half.

The working process of the present invention is as follows. 1) The servo motor drives the chain assembly to intermittently operate through the driving chain wheel assembly, the upper edge of the main chain horizontally translates from back to front, and the lower edge of the main chain horizontally translates from front to back; the clamping assembly intermittently translates horizontally from front to back at the lower side of the main chain as it intermittently translates horizontally from back to front at the upper side of the main chain. 2) The clamping assembly is stopped between two quadrant points of an arc section of the charging rotating synchronous belt wound on the charging rotating reversing wheel and closest to the motion trail of the clamping assembly; the two charging rotating motors simultaneously drive the two charging rotating driving synchronous wheels, the two charging rotating direction-changing wheels and the two charging rotating synchronous belts to rotate, and when viewed from top to bottom, the two charging rotating direction-changing wheels rotate in the anticlockwise direction, so that the two arc sections of the charging rotating synchronous belts wound on the charging rotating direction-changing wheels rotate in the anticlockwise direction; the two charging turning cylinders extend simultaneously to drive the two sets of charging turning supports, the charging turning direction-changing wheel, the charging turning driving synchronous wheel, the charging turning motor, the charging turning push plate and the charging turning synchronous belt to move horizontally and oppositely; two charging rotating synchronous belts are wound on a quadrant point of an arc section on a charging rotating reversing wheel, which is closest to the motion track of a clamping assembly, and simultaneously press an outer cylindrical surface of a friction wheel, and drive the friction wheel to rotate clockwise, a combination of a half jacket I, a half jacket II, a half jacket pressure spring and the friction wheel rotates along with the rotation, a charging rotating air cylinder is blocked and stops extending until edges of the outer cylindrical surface of the friction wheel and a guide surface of the friction wheel, which are intersected, are attached to the charging rotating synchronous belts, the operation is continued, the edges of the outer cylindrical surface of the friction wheel and the guide surface of the friction wheel, which are intersected, slide along the charging rotating pushing plane, the charging rotating synchronous belts temporarily leave the friction wheel, the two charging rotating synchronous belts continue extending simultaneously until the charging rotating pushing plane and the guide surface of the friction wheel are attached together, and the direction of the guide surface of the friction wheel is vertical to the left-right direction, at the moment, the directions of the first half jacket vertical plane and the second half jacket vertical plane are both vertical to the left-right direction; the charging rotating and centering motor stops rotating, and the charging rotating and centering cylinder stops thrust and keeps at the position to continuously provide a guiding function for the guide surface of the friction wheel; in practical applications, the stroke position of the charge-to-positive cylinder may be detected by a stroke sensor. If the loading rotating and forward pushing plane is firstly contacted with the edge where the outer cylindrical surface of the friction wheel is intersected with the guide surface of the friction wheel, the two loading rotating and forward pushing cylinders continue to extend simultaneously until the loading rotating and forward pushing plane and the guide surface of the friction wheel are completely attached together, and the direction of the guide surface of the friction wheel is vertical to the left-right direction. 3) The clamping assembly horizontally translates from back to front along the upper edge of the main chain, the friction wheel guide surface leaves the charging rotation pushing plane, the friction wheel guide surface enters a space between the right side surface of the left charging righting guide plate and the left side surface of the right charging righting guide plate, and is under the guiding action, so that the combined rotation of the half jacket I, the half jacket II, the half jacket pressure spring and the friction wheel is prevented, and the half jacket I and the half jacket II are ensured to be on the left and on the right. 4) The clamping assembly positioned between the two charging centralizing guide plates stops when the two charging tensioning plates are respectively positioned between the first half sliding sleeve bearing surface and the first half sliding sleeve inner cylindrical surface and between the second half sliding sleeve bearing surface and the second half sliding sleeve inner cylindrical surface, two charging tensioning cylinders of the pair of charging tensioners contract simultaneously, the two charging tensioning plates are tightly close to each other and pull the first half sliding sleeve and the second half sliding sleeve towards two sides, the first half sliding sleeve and the second half sliding sleeve respectively translate along the clamping guide rod in a back-to-back manner, the first half sliding sleeve T-shaped tenon and the second half sliding sleeve T-shaped tenon are far away from each other, the first half clamping sleeve and the second half clamping sleeve are respectively dragged through the first half clamping sleeve T-shaped groove and the second half clamping sleeve T-shaped groove, the first half clamping sleeve and the second half clamping sleeve overcome the elastic pressure of a half compression spring and are far away from each other along the semi clamping guide rod; the mutual distance is not symmetrical, but the moving distance of the half jacket II is larger, and the moving distance of the half jacket I is smaller or not movable because the guide surface of the friction wheel is limited between the two charging righting guide plates; the distance between the half clamp hole I of the half clamp sleeve and the half clamp hole II of the half clamp sleeve is not large and is only 1-2 mm; a worker places an unground tungsten needle between the half clamping hole I and the half clamping hole II of the half clamping sleeve through the guide hole, and the lower end of the tungsten needle is supported by the lower loading supporting plate. Before the main chain is started next time, the two charging tensioning cylinders are simultaneously stretched, the half sliding sleeve T-shaped tenon I and the half sliding sleeve T-shaped tenon II release the half jacket I and the half jacket II, the half jacket I and the half jacket II are close to each other along a half jacket guide rod under the action of elastic pressure of a half jacket pressure spring, the half jacket hole I and the half jacket hole II clamp a straight rod part of a tungsten needle positioned in the middle together, the outer half cylindrical surface I and the outer half cylindrical surface II form a complete outer cylindrical surface again, and the half jacket T-shaped groove I and the half jacket T-shaped groove are paired together to form an annular T-shaped groove again. Under the action of elastic pressure of the pressure spring of the half sliding sleeve, the half sliding sleeve I and the half sliding sleeve II are close to each other, and the half sliding sleeve inner cylindrical surface I and the half sliding sleeve inner cylindrical surface II are aligned together again to form a complete inner cylindrical surface. 5) The combination of the clamping assembly and the tungsten needle horizontally translates from back to front along with the upper edge of the main chain, the guide surface of the friction wheel leaves two loading and centering guide plates, then the 'half sliding sleeve guide plane I and the half sliding sleeve guide plane II' enter between the two grinding assembly guide plates, and horizontally translates from back to front under the guide effect of the two grinding assembly guide plates, so that the clamping assembly can be prevented from shaking, and the half sliding sleeve inner cylindrical surface I and the half sliding sleeve inner cylindrical surface II are prevented from being away from each other. Two fast rotation driving motors of the two fast rotation driving assemblies are started clockwise simultaneously to drive the fast rotation driving synchronous belts to run at high speed at equal linear speed; the grinding and pushing cylinder on the left side drives the quick rotation driving assembly on the left side to translate rightwards, and the quick rotation driving assembly on the left side drives the working edge of the synchronous belt to abut against the left side of the outer cylindrical surface of the friction wheel; the working edge of the right quick rotation driving synchronous belt translates from back to front, the grinding and pushing cylinder on the right drives the quick rotation driving assembly on the right to translate left, and the working edge of the right quick rotation driving synchronous belt is close to the right side of the outer cylindrical surface of the friction wheel; the two fast rotation driving synchronous belts drive the friction wheel, the half jacket I, the half jacket II, the half jacket pressure spring and the tungsten needle to rotate anticlockwise at high speed; the combination of the clamping assembly and the tungsten needle slowly translates forwards from back along with the main chain, the lower end of the tungsten needle rotating at a high speed gradually approaches the left grinding inclined surface and the right grinding inclined surface, grinding action is generated, and when the combination of the clamping assembly and the tungsten needle leaves the left grinding inclined surface and the right grinding inclined surface from the front end, the lower end of the tungsten needle is ground and converted into a conical end. 6) The combination of centre gripping subassembly and tungsten needle is along with the preceding horizontal translation of going forward after the higher authority at the main chain, and the drive sprocket subassembly is walked around to the front below, when centre gripping subassembly stops between two "unload to change positive hold-in range to wrap around the nearest notional limit point of the circular arc section on unloading changes positive bend wheel from centre gripping subassembly motion track": the two unloading rotation-positive motors simultaneously drive the two unloading rotation-positive driving synchronous wheels, the two unloading rotation-positive direction-changing change wheels and the two unloading rotation-positive synchronous belts to rotate, and when the two unloading rotation-positive direction-changing change wheels rotate in the counterclockwise direction, viewed from top to bottom, the two unloading rotation-positive direction-changing change wheels rotate in the counterclockwise direction, so that the two arc sections of the unloading rotation-positive synchronous belts wrapped on the unloading rotation-positive direction-changing change wheels rotate in the counterclockwise direction; the two unloading turning cylinders extend simultaneously to drive the two sets of unloading turning brackets, the unloading turning direction-changing wheels, the unloading turning driving synchronous wheels, the unloading turning motor, the unloading turning push plate and the unloading turning synchronous belt to move horizontally and oppositely; two discharging rotating and centering synchronous belts are wound on a quadrant point, which is closest to the motion track of the clamping assembly, of an arc section on the discharging rotating and centering bend wheel, and simultaneously press an outer cylindrical surface of the friction wheel and drive the friction wheel to rotate clockwise, a combination of the half jacket I, the half jacket II, the half jacket pressure spring and the friction wheel rotates along with the rotation, the discharging rotating and centering cylinder is blocked and stops extending until edges, which are intersected with a guide surface of the friction wheel, of the outer cylindrical surface of the friction wheel are attached to the discharging rotating and centering synchronous belts, the operation is continued, the edges, which are intersected with the guide surface of the friction wheel, of the outer cylindrical surface of the friction wheel slide along a discharging rotating and pushing plane, the discharging rotating and centering synchronous belts temporarily leave the friction wheel, the two discharging rotating and centering cylinders simultaneously extend until the discharging rotating and pushing plane and the guide surface of the friction wheel are attached together, and the direction of the guide surface of the friction, at the moment, the directions of the first half jacket vertical plane and the second half jacket vertical plane are both vertical to the left-right direction; the unloading rotation motor stops rotating. Two unloading rotary cylinders contract simultaneously to enable two unloading rotary pushing planes to leave friction wheel guide surfaces on two sides simultaneously, two unloading tensioning cylinders contract simultaneously, two unloading tensioning plates simultaneously lean against and pull a first half sliding sleeve and a second half sliding sleeve towards two sides, the first half sliding sleeve and the second half sliding sleeve respectively translate along a clamping guide rod in a back-to-back mode, a first half sliding sleeve T-shaped tenon and a second half sliding sleeve T-shaped tenon are far away from each other, a first half clamping sleeve and a second half clamping sleeve are respectively dragged through the first half clamping sleeve T-shaped groove and the second half clamping sleeve T-shaped groove, the first half clamping sleeve and the second half clamping sleeve overcome the elastic pressure of a pressure spring of the half clamping sleeve and are far away from each other along the guide rod of the half clamping sleeve, a first half clamping hole and a second half clamping hole of the clamping sleeve are far away from each other, and a ground tungsten needle falls off from a space between the first half. Before the main chain is started next time, the two discharging centering cylinders are simultaneously stretched, the half sliding sleeve T-shaped tenon I and the half sliding sleeve T-shaped tenon II release the half jacket I and the half jacket II, the half jacket I and the half jacket II are close to each other along the half jacket guide rod under the action of the elastic pressure of the half jacket pressure spring, and the half jacket hole I and the half jacket hole II are combined together. Under the action of elastic pressure of the pressure spring of the half sliding sleeve, the half sliding sleeve I and the half sliding sleeve II are close to each other, and the half sliding sleeve inner cylindrical surface I and the half sliding sleeve inner cylindrical surface II are aligned together again to form a complete inner cylindrical surface.

The clamping assembly enters the circulation of the next wheel along with the main chain by bypassing the redirection chain wheel assembly. All the clamping assemblies are in such a cycle one by one. Generally, the finished product workbin is located the loading assembly directly below, and the workman puts into the guiding hole of loading assembly department with blunt tungsten needle, need not move the position, or only moves short position, just can follow the finished product workbin below and take a tungsten needle that the grinding was accomplished, and the operation is more convenient. The steps 1) to 6) are continuously and circularly reciprocated, so that the automatic grinding of the randomly placed blunt tungsten needle can be finished, and the tungsten needle is placed into a finished product bin. It is also possible that no worker exchanges the tungsten needle in a certain period of time, the clamping assembly does not carry the tungsten needle to enter the grinding assembly, whether the tungsten needle exists or not can be detected through the sensor, if the tungsten needle does not exist, the quick rotation driving motor and the grinding and pushing cylinder are not started, and the clamping assembly idles for a circle along with the main chain. The tungsten needle changing machine can be opened before work and operated all the time, workers are stopped to exchange tungsten needles at any time after work, and the tungsten needles in a finished product bin have some surplus. The charging assembly described above comprises two pairs of charging tensioners and may also comprise a plurality of pairs of charging tensioners, the number of pairs of charging tensioners being determined by the average time period in a workshop, say ten minutes, for which there are several workers going to change the tungsten needle and adding some margin. Or increasing the total number of stations of the present invention to increase the number of pairs of charging tensioners.

The invention has the beneficial effects that: in the invention, the blunt tungsten needle can be put in the time when the main chain stops in operation, and workers can exchange the tungsten needle randomly without special staff on duty, so that the automatic operation is realized, the labor is saved, the waiting is not needed, the time waste is prevented, and the operation is simple and convenient. Anti-shaking measures are taken at the high-speed running part to prevent the tungsten needle from being broken. The two grinding inclined planes are ground simultaneously, so that the grinding speed can be increased, the left side and the right side of the tungsten needle are stressed simultaneously, the stress is balanced, and the tungsten needle is not easy to break.

Drawings

FIG. 1 is a schematic three-dimensional structure of an embodiment of the present invention; FIG. 2 is a front view of an embodiment of the present invention; FIG. 3 is a schematic three-dimensional structure of the chain assembly 5; FIG. 4 is a schematic three-dimensional structure of the clamping assembly 53; FIG. 5 is a schematic three-dimensional structure of a combination of a half-collet one 531 and a friction wheel 537; FIG. 6 is a schematic three-dimensional structure of a second half-jacket 532; FIG. 7 is a schematic three-dimensional structure of the first half-sliding sleeve 533; FIG. 8 is a schematic three-dimensional structure of a second half sleeve 534; FIG. 9 is a schematic three-dimensional view of the guide bar assembly 535; fig. 10 is a schematic three-dimensional structure of the charging turning assembly pair 1; fig. 11 is a schematic three-dimensional structure of the charging turning assembly 11; FIG. 12 is a top view of the charge forward pusher plate 116; fig. 13 is a schematic three-dimensional structure of the charging assembly 2; FIG. 14 is a schematic three-dimensional structure of charging tensioner 21; fig. 15 is a three-dimensional structure diagram of the grinding unit 3; fig. 16 is a three-dimensional structure diagram of the fast rotation driving assembly 31 on the left; fig. 17 is a top view of the grinding plate pair 33; fig. 18 is a left side view of the grinding plate pair 33; figure 19 is a schematic three-dimensional structure of the turn-right discharge assembly 4; fig. 20 is a three-dimensional structural view of the discharge tensioner 41; fig. 21 is a schematic three-dimensional structure of the discharging turning-right assembly 42; FIG. 22 is a top view of the discharge forward push plate 426; fig. 23 is a top view of the tungsten needle 0; shown in the figure: 0. a tungsten needle; 01. a conical end; 02. a straight rod part; K. a conical angle; 1. a pair of charging and turning assemblies; 11. a charging and turning assembly; 111. a charging turning cylinder; 1111. a charging turning cylinder body; 1112. a piston rod of the charging turning cylinder; 112. a loading turning support; 113. a charging turning direction-changing wheel; 114. the charging rotation drives the synchronizing wheel; 115. a charging and rotating motor; 116. a loading forward push plate; 1161. the charging is rotated to the positive pushing plane; 1162. the loading is rotated to the positive push plate gap; 117. a charging and rotating synchronous belt; the included angle between the edge of the loading forward-pushing plate notch 1162 and the loading forward-pushing plane 1161 is X and Y, wherein X is not less than 160 degrees, and Y is not less than 160 degrees; 2. a charging assembly; 21. a charging tensioner; 211. a charging tensioning cylinder; 2111. a charging tensioning cylinder block; 2112. a charging tensioning cylinder piston rod; 212. a charging tensioning plate; 22. loading a lower supporting plate; 23. a loading centralizing guide plate; 3. grinding the assembly; 31. a fast rotation drive assembly; 311. a fast rotation driving support plate; 312. the synchronous belt is driven by fast rotation; 313. driving a synchronizing wheel by fast rotation; 314. driving a direction change wheel by fast rotation; 315. a fast-rotating drive motor; 316. driving the slide block to rotate quickly; 317. a fast rotation driving friction plate; 32. grinding the assembly guide plate; 33. grinding the plate pair; 331. a left grinding plate; 3311. left grinding the inclined plane; a left grinding bevel 3311 is along the cut contour line of line a-a; b', a cutting contour line of the left grinding inclined surface 3311 along the line B-B; c, a cut-away contour line of the left grinding bevel 3311 along the line C-C; d', a cutting contour line of the left grinding inclined surface 3311 along the line D-D; 332. a right grinding plate; 3321. right grinding the inclined plane; a'. Right grinding inclined plane 3321 is along the sectioning contour line of the straight line A-A; b' the right grinding bevel 3311 is along the sectioning contour line of the line B-B; the right grinding bevel 3311 is along the cutting contour line of the straight line C-C; d' the right grinding bevel 3311 is along the cutting contour line of the straight line D-D; E. a chamfer between the lower surface of the left grinding plate 331 and the left grinding bevel 3311; k' the angle between the front end contour of the left grinding inclined surface 3311 and the front end contour of the right grinding inclined surface 3321; 34. grinding and tightly pushing the air cylinder; 35. grinding and tightly pushing the linear guide rail; 4. a forward turning discharging component; 41. a discharge tensioner; 411. a discharge tensioning cylinder; 4111. discharging and tensioning the cylinder body; 4112. a piston rod of the discharging tensioning cylinder; 412. a discharge tensioning plate; 42. the discharging and correcting component; 421. a discharging and positive rotating cylinder; 4211. the discharging is turned to the cylinder body; 4212. the discharging turning cylinder piston rod; 422. unloading and turning the bracket; 423. discharging and turning a direction-changing wheel; 424. the unloading rotation drives the synchronizing wheel; 425. a discharging rotating motor; 426. unloading and forward-rotating the push plate; 4261. unloading is changed to a forward pushing plane; 4262. the discharging is rotated to the front of the notch of the push plate; 427. a discharging and aligning synchronous belt; v and W are included angles between the edges of the unloading rotation and forward push plate notches 4262 and an unloading rotation and forward push plane 4261, V is not less than 160 degrees, and W is not less than 160 degrees; 5. a chain assembly; 51. a left chain; 52. a right chain; 53. a clamping assembly; 531. a first half jacket; 5311. an outer semi-cylindrical surface I; 5312. a first vertical plane of the half jacket; 5313. a half clamping hole I of the half clamping sleeve; 5314. a half jacket T-shaped groove I; 5315. a semi-jacketed guide rod; 5316. a half jacket stop; 532. a second half jacket; 5321. a second outer semi-cylindrical surface; 5322. a second half jacket vertical plane; 5323. a half clamping hole II of the half clamping sleeve; 5324. a half jacket T-shaped groove II; 5325. a semi-jacket guide hole; 5326. a compression spring chamber; 533. a half sliding sleeve I; 5331. the inner cylindrical surface I of the half sliding sleeve; 5332. a half sliding sleeve T-shaped tenon I; 5333. a first half sliding sleeve guide hole 5334 is a first half sliding sleeve positioning surface; 5335. a half sliding sleeve tensile surface I; 5336. a half sliding sleeve guide plane I; 534. a second half sliding sleeve; 5341. a second inner cylindrical surface of the half sliding sleeve; 5342. a half sliding sleeve T-shaped tenon II; 5343. a second half sliding sleeve guide hole 5344 is a second half sliding sleeve positioning surface; 5345. a half sliding sleeve tensile surface II; 5346. a second half sliding sleeve guide plane; 535. a guide bar assembly; 5351. clamping the guide rod; 5352. clamping the boss in the guide rod; 5353. connecting chain plates; 536. a half sliding sleeve pressure spring; 537. a friction wheel; 5371. a guide hole; 5372. a friction wheel guide surface; 6. a direction changing sprocket assembly; 7. a drive sprocket assembly; 8. a finished product bin; 9. a frame; 10. a servo motor.

Detailed Description

The invention is further illustrated with reference to the following figures and examples:

example (b): see fig. 1-23. An automatic sharpening device for tungsten needle random feeding continuous work comprises a chain assembly 5, a redirection chain wheel assembly 6, a driving chain wheel assembly 7, a rack 9 and a servo motor 10; the redirection chain wheel assembly 6 comprises two redirection chain wheels and a redirection chain wheel shaft, the two redirection chain wheels are respectively and fixedly connected with the redirection chain wheel shaft, and the redirection chain wheel shaft is connected with the rack 9 through a rotating pair; the driving chain wheel assembly 7 comprises two driving chain wheels and a driving chain wheel shaft, the two driving chain wheels are respectively and fixedly connected with the driving chain wheel shaft, and the driving chain wheel shaft is connected with the rack 9 through a rotating pair; the driving chain wheel assembly 7 is arranged at the front edge of the redirection chain wheel assembly 6; the shell of the servo motor 10 is fixedly connected with the frame 9, and the output shaft of the servo motor 10 is fixedly connected with the driving chain wheel shaft; chain assembly 5 comprises a main chain comprising a left chain 51 and a right chain 52; the specifications of the left chain 51 and the right chain 52 are the same; the left direction-changing chain wheel and the left driving chain wheel are aligned front and back, and are respectively meshed with the left chain 51; the right direction-changing chain wheel and the right driving chain wheel are aligned front and back, and are respectively meshed with the right chain 52; the grinding machine is characterized by further comprising a charging and rotating assembly pair 1, a charging assembly 2, a grinding assembly 3 and a rotating and discharging assembly 4; chain assembly 5 further includes a plurality of clamping assemblies 53; a clamping assembly 53 comprises a half-jacket one 531, a half-jacket two 532, a half-sliding sleeve one 533, a half-sliding sleeve two 534, a guide rod assembly 535, four half-sliding sleeve compression springs 536, two half-jacket compression springs and friction wheels 537; the guide rod assembly 535 comprises two clamping guide rods 5351 and two connecting link plates 5353, wherein one of the two connecting link plates 5353 is arranged on the left side of the other, the axial leads of the two clamping guide rods 5351 are arranged along the left-right horizontal direction, two ends of the clamping guide rods 5351 are fixedly connected with the two connecting link plates 5353 respectively, and one of the two clamping guide rods 5351 is arranged on the front side of the other; the middle part of the clamping guide rod 5351 is provided with a clamping guide rod middle boss 5352; two link plates 5353 are respectively coupled to the left chain 51 and the right chain 52, and a plurality of clamping assemblies 53 are distributed at equal intervals along the circumferential direction of the main chain; the first half sliding sleeve 533 is provided with a first half sliding sleeve inner cylindrical surface 5331, the first half sliding sleeve inner cylindrical surface 5331 is a half inner cylindrical surface, the axial lead of the first half sliding sleeve inner cylindrical surface 5331 is vertical, and the opening faces right; a quadrant point position of the inner cylindrical surface I5331 close to the left side is provided with a T-shaped tenon I5332 of the half sliding sleeve; the half sliding sleeve I533 is provided with a half sliding sleeve positioning surface I5334 and a half sliding sleeve pull-bearing surface I5335 which face towards the right; a first half sliding sleeve guide plane 5336 facing the left is arranged on the first half sliding sleeve 533; the first half sliding sleeve bearing surface 5335 is closer to the left than the first half sliding sleeve inner cylindrical surface 5331; a first half sliding sleeve guide hole 5333 is arranged on the first half sliding sleeve positioning surface 5334, the center line of the first half sliding sleeve guide hole 5333 is arranged along the left-right horizontal direction, the first half sliding sleeve guide hole 5333 is through left and right, and the left end opening of the first half sliding sleeve guide hole 5333 is arranged on a first half sliding sleeve guide plane 5336; the second half sliding sleeve 534 is provided with a second half sliding sleeve inner cylindrical surface 5341, the second half sliding sleeve inner cylindrical surface 5341 is a half inner cylindrical surface, the axial lead of the second half sliding sleeve inner cylindrical surface 5341 is vertical, and the opening faces the left; a quadrant point position of the inner cylindrical surface II 5341 of the half sliding sleeve close to the right side is provided with a T-shaped tenon II 5342 of the half sliding sleeve; the half sliding sleeve II 534 is provided with a half sliding sleeve positioning surface II 5344 facing the left and a half sliding sleeve tensile surface II 5345; a second half sliding sleeve guiding plane 5346 facing right is arranged on the second half sliding sleeve 534; the second half sliding sleeve tensile surface 5345 is closer to the right than the second half sliding sleeve inner cylindrical surface 5341; a second half sliding sleeve guide hole 5343 is formed in the second half sliding sleeve positioning surface 5344, the center line of the second half sliding sleeve guide hole 5343 is arranged along the left-right horizontal direction, the second half sliding sleeve guide hole 5343 is through left and right, and the right end of the second half sliding sleeve guide hole 5343 is opened on a second half sliding sleeve guide plane 5346; the two half sliding sleeve guide holes I5333 are respectively in sliding fit with the shaft sections of the two clamping guide rods 5351 positioned on the left side of the clamping guide rod middle protruding platform 5352, the left half sliding sleeve pressure spring 536 is sleeved on the clamping guide rod 5351, the left end of the left half sliding sleeve pressure spring 536 presses the left connecting chain plate 5353, the right end of the left half sliding sleeve pressure spring 536 presses the half sliding sleeve guide plane I5336, and the half sliding sleeve positioning plane I5334 presses the left end face of the clamping guide rod middle protruding platform 5352; the two half sliding sleeve guide holes 5343 are respectively in sliding fit with shaft sections of the two clamping guide rods 5351 which are positioned on the right side of the boss 5352 in the clamping guide rod, a half sliding sleeve pressure spring 536 on the right side is sleeved on the clamping guide rod 5351, the right end of the half sliding sleeve pressure spring 536 on the right side presses a connecting chain plate 5353 on the right side, the left end of the half sliding sleeve pressure spring 536 on the right side presses a half sliding sleeve guide plane two 5346, and a half sliding sleeve positioning plane two 5344 presses the right end face of the boss 5352 in the clamping guide rod; the half sliding sleeve inner cylindrical surface I5331 and the half sliding sleeve inner cylindrical surface II 5341 are paired together to form a complete inner cylindrical surface; the first half jacket 531 is a half revolving body, the rotating axis of the first half jacket 531 is arranged along the vertical direction, an outer semi-cylindrical surface 5311 and a vertical semi-jacket vertical plane 5312 are arranged on the first half jacket 531, the first half jacket vertical plane 5312 is perpendicular to the left-right direction, a semi-annular first half jacket T-shaped groove 5314 is arranged on the first outer semi-cylindrical surface 5311, and a vertical first half jacket hole 5313 is arranged on the first half jacket vertical plane 5312; a half jacket guide rod 5315 is arranged on the half jacket vertical plane one 5312, the axis line of the half jacket guide rod 5315 is arranged along the left-right horizontal direction, the first end of the half jacket guide rod 5315 is arranged on the half jacket vertical plane one 5312, and the second end of the half jacket guide rod 5315 is provided with a half jacket stop 5316; the second half jacket 532 is a half revolving body, the axis of rotation of the second half jacket 532 is arranged along the vertical direction, the second half jacket 532 is provided with a second outer semi-cylindrical surface 5321 and a second vertical half jacket vertical plane 5322, the second half jacket vertical plane 5322 is vertical to the left and right direction, the second outer semi-cylindrical surface 5321 is provided with a second semi-annular half jacket T-shaped groove 5324, and the second half jacket vertical plane 5322 is provided with a second vertical half jacket hole 5323; a semi-jacket guide hole 5325 is formed in the semi-jacket vertical plane II 5322, a first end opening of the semi-jacket guide hole 5325 is formed in the semi-jacket vertical plane II 5322, and a second end opening of the semi-jacket guide hole 5325 is communicated with the compression spring chamber 5326; the semi-jacket vertical plane one 5312 and the semi-jacket vertical plane two 5322 face to face, the semi-jacket guide rod 5315 is in sliding fit with the semi-jacket guide hole 5325, a semi-jacket pressure spring is sleeved on the semi-jacket guide rod 5315 and located in a compression spring chamber 5326, one end of the semi-jacket pressure spring presses the end face of the second end of the semi-jacket guide hole 5325, the other end of the semi-jacket pressure spring presses a semi-jacket stop 5316, the opening of the semi-jacket hole one 5313 and the opening of the semi-jacket hole two 5323 are opposite left and right, under the pressure action of the semi-jacket pressure spring, the semi-jacket one 5313 and the semi-jacket hole two 5323 clamp the straight rod part 02 of the tungsten needle 0 in the middle together, the outer semi-cylindrical surface one 5311 and the outer semi-cylindrical surface two 5321 form a complete outer cylindrical surface, and the outer cylindrical surface 531 and the inner cylindrical surface consisting of the outer semi-cylindrical surface 5311 and the inner cylindrical surface of; the first half-jacket T-shaped groove 5314 and the second half-jacket T-shaped groove 5324 are paired together to form an annular T-shaped groove, and the first half-sliding sleeve T-shaped tenon 5332 and the second half-sliding sleeve T-shaped tenon 5342 are respectively in sliding fit with the annular T-shaped groove; the friction wheel 537 is provided with an outer cylindrical surface, the axis of the friction wheel 537 is arranged along the vertical direction, the center of the friction wheel 537 is provided with a guide hole 5371 which is through up and down, the upper end of the guide hole 5371 has a large diameter, and the lower end of the guide hole 5371 has a small diameter, so that a tungsten needle can be conveniently placed from the upper end; the lower end of the friction wheel 537 is fixedly connected with the upper end of the first half jacket 531, and the axial lead of the friction wheel 537 is superposed with the axial lead of the first half jacket 531; the lower end of the guide hole 5371 is communicated with the upper end of a hole formed by the semi-jacket semi-clamping hole I5313 and the semi-jacket semi-clamping hole II 5323; one piece of material is removed from each of the left-right symmetrical positions at the upper end of the friction wheel 537 to form a friction wheel guide surface 5372, and the friction wheel guide surfaces 5372 are perpendicular to the left-right direction; the servo motor 10 drives the chain assembly 5 to intermittently operate through the driving chain wheel assembly 7, the upper edge of the main chain horizontally translates from back to front, and the lower edge of the main chain horizontally translates from front to back; the gripping member 53 is intermittently horizontally translated from front to back at the lower side of the main chain as it is intermittently horizontally translated from back to front at the upper side of the main chain; the charging turning component pair 1 comprises two charging turning components 11; the charging turning component 11 comprises a charging turning cylinder 111, a charging turning support 112, a charging turning direction-changing wheel 113, a charging turning driving synchronous wheel 114, a charging turning motor 115, a charging turning push plate 116 and a charging turning synchronous belt 117; the two charging and aligning components 11 are symmetrically distributed on the left side and the right side of the motion track of the clamping component 53 on the upper side of the main chain; the charging turning cylinder 111 is a cylinder with a guide rod; the charging turning cylinder 111 includes a charging turning cylinder block 1111 and a charging turning cylinder piston rod 1112; the charging turning cylinder body 1111 is fixedly connected with the frame 9; the charging turning support 112 is fixedly connected with a charging turning cylinder piston rod 1112; the charging turning direction-changing wheel 113 is connected with the charging turning bracket 112 through a rotating pair; the shell of the charging turning motor 115 is fixedly connected with the charging turning bracket 112; the output shaft of the charging rotation motor 115 is fixedly connected with the charging rotation driving synchronizing wheel 114; the charging turning direction-changing wheel 113 and the charging turning driving synchronous wheel 114 are respectively meshed with a charging turning synchronous belt 117; the loading rotation direction-changing wheel 113 is closer to the motion track of the clamping assembly 53 than the loading rotation direction-changing driving synchronous wheel 114; the charging rotating and positive pushing plate 116 is fixedly connected with the charging rotating and positive bracket 112; the loading turning push plate 116 is provided with a loading turning push plane 1161, the loading turning push plane 1161 is perpendicular to the left and right direction, the loading turning push plate 116 is positioned below the loading turning bend wheel 113, the loading turning push plane 1161 is tangent to a quadrant point, closest to the motion track of the clamping assembly 53, of an arc segment, wrapped on the loading turning bend wheel 113, of the loading turning synchronous belt 117, and a loading turning push plate notch 1162 is arranged at a position, opposite to the tangent point, of the loading turning push plate 1161; the clamping assembly 53 stops between two quadrant points of an arc segment of the charging rotation synchronous belt 117 wrapped on the charging rotation direction-changing wheel 113 and closest to the motion track of the clamping assembly 53; the two charging turning motors 115 simultaneously drive the two charging turning driving synchronous wheels 114, the two charging turning direction-changing wheels 113 and the two charging turning synchronous belts 117 to rotate, and when viewed from top to bottom, the two charging turning direction-changing wheels 113 rotate in the counterclockwise direction, so that the two arc sections of the charging turning synchronous belts 117 wrapped on the charging turning direction-changing wheels 113 rotate in the counterclockwise direction; the two charging turning cylinders 111 extend simultaneously to drive the two sets of charging turning supports 112, the charging turning direction-changing wheel 113, the charging turning driving synchronizing wheel 114, the charging turning motor 115, the charging turning push plate 116 and the charging turning synchronizing belt 117 to move horizontally and oppositely; two 'loading rotating and centering synchronous belts 117 wrap the arc section on the loading rotating and centering change-over wheel 113 and are closest to the quadrant point of the motion track of the clamping assembly 53', the outer cylindrical surface of the friction wheel 537 is simultaneously pressed, the friction wheel 537 is driven to rotate clockwise, the combination of the half jacket one 531, the half jacket two 532, the half jacket pressure spring and the friction wheel 537 rotates along with the rotation, the loading rotating and centering cylinder 111 is blocked and stops extending until 'the intersected edge of the outer cylindrical surface of the friction wheel 537 and the guide surface 5372 of the friction wheel' is attached to the loading rotating and centering synchronous belt 117, the operation is continued, then 'the intersected edge of the outer cylindrical surface of the friction wheel 537 and the guide surface 5372 of the friction wheel' slides along the loading rotating and centering push plane 1161, the loading rotating and centering synchronous belt 117 leaves the friction wheel 537, the two loading rotating and centering cylinders 111 continue extending simultaneously until the loading rotating and centering push plane 1161 and the guide surface 5372 of the friction wheel are temporarily attached together, the direction of the friction wheel guide surface 5372 is vertical to the left-right direction, and the directions of the first half jacket vertical plane 5312 and the second half jacket vertical plane 5322 are vertical to the left-right direction; the charging rotation motor 115 stops rotating, and the charging rotation cylinder 111 stops pushing force and keeps at the position; in practical application, the stroke position of the charging turning cylinder 111 can be detected by a stroke sensor; the charging assembly 2 comprises two pairs of charging tensioners 21, a charging lower supporting plate 22 and two charging centralizing guide plates 23; the two charging centralizing guide plates 23 are fixedly connected with the rack 9 respectively, and the 'right side surface of the charging centralizing guide plate 23 on the left side and the left side surface of the charging centralizing guide plate 23 on the right side' are in sliding fit with the two friction wheel guide surfaces 5372, so that the combined rotation of the half jacket I531, the half jacket II 532, the half jacket pressure spring and the friction wheel 537 is prevented, and one of the half jacket I531 and the half jacket II 532 is ensured to be on the left and the other is on the right; two charging tensioners 21 of the pair of charging tensioners 21 are bilaterally symmetrical and are respectively positioned at the left side and the right side of the motion track of the clamping component 53 on the upper side of the main chain; the charging tensioner 21 includes a charging tensioning cylinder 211 and a charging tensioning plate 212; the charge tensioning cylinder 211 includes a charge tensioning cylinder block 2111 and a charge tensioning cylinder piston rod 2112; the charging tensioning cylinder block 2111 is fixedly connected with the frame 9; the charging tensioning plate 212 is fixedly connected with a charging tensioning cylinder piston rod 2112; the charging lower supporting plate 22 is positioned right below the combined hole of the half jacket half clamping hole I5313 and the half jacket half clamping hole II 5323; two charging tensioning cylinders 211 of the pair of charging tensioners 21 contract, the two charging tensioning plates 212 simultaneously abut against and pull the first half sliding sleeve 533 and the second half sliding sleeve 534 towards two sides, the first half sliding sleeve 533 and the second half sliding sleeve 534 respectively translate back to back along the clamping guide rod 5351, the first half sliding sleeve T-shaped tenon 5332 and the second half sliding sleeve T-shaped tenon 5342 are far away from each other, the first half clamping sleeve 531 and the second half clamping sleeve 532 are respectively dragged through the first half clamping sleeve T-shaped groove 5314 and the second half clamping sleeve T-shaped groove 5324, the first half clamping sleeve 531 and the second half clamping sleeve 532 are far away from each other along the guide rod 5315 of the half clamping sleeve by overcoming the elastic pressure of a compression spring of the half clamping sleeve, the first half clamping hole 5313 and the second half clamping hole 5323 of the half clamping sleeve are far away from each other, at the moment, an unground tungsten needle 0 can be placed between the first half clamping hole 5313 and the second half clamping hole 5323 of the clamping sleeve; the mutual distance described above is not symmetrical, but the distance moved by the second half-jacket 532 is greater, and since the friction wheel guide surface 5372 is confined between the two charge centralizing guide plates 23, the first half-jacket 531 is entrained, and the distance moved is smaller or does not move; the distance between the half clamping hole I5313 of the half clamping sleeve and the half clamping hole II 5323 of the half clamping sleeve is not large and is only 1 to 2 millimeters; the charging assembly 2 is positioned right in front of the charging turning assembly pair 1; the grinding assembly 3 comprises a fast rotation driving assembly 31, two grinding assembly guide plates 32, a grinding plate pair 33, a grinding and tightening cylinder 34 and a grinding and tightening linear guide rail 35; the two grinding assembly guide plates 32 are positioned on the left side and the right side of the movement track of the clamping assembly 53 on the upper side of the main chain; the two grinding assembly guide plates 32 are respectively fixedly connected with the frame 9; the right side surface of the left grinding assembly guide plate 32 is tightly attached to the half sliding sleeve guide plane one 5336, the left side surface of the right grinding assembly guide plate 32 is tightly attached to the half sliding sleeve guide plane two 5346, and the clamping assembly 53 translates under the guiding action of the two grinding assembly guide plates 32, so that the clamping assembly 53 can be prevented from shaking, and the half sliding sleeve inner cylindrical surface one 5331 and the half sliding sleeve inner cylindrical surface two 5341 are prevented from being away from each other; the left fast rotation driving assembly 31 comprises a fast rotation driving support plate 311, a fast rotation driving synchronous belt 312, a fast rotation driving synchronous wheel 313, a fast rotation driving direction changing wheel 314, a fast rotation driving motor 315, a fast rotation driving slide block 316 and a fast rotation driving friction plate 317; the fast rotation driving slide block 316 is fixedly connected with the fast rotation driving support plate 311; the left grinding and tightening linear guide rail 35 is fixedly connected with the left grinding assembly guide plate 32, and the grinding and tightening linear guide rail 35 is arranged along the left-right horizontal direction; the fast rotation driving slide block 316 and the grinding and pushing linear guide rail 35 form a linear guide rail pair; the grinding and pushing cylinder 34 comprises a grinding and pushing cylinder body and a grinding and pushing cylinder piston rod; the grinding and pushing cylinder body is fixedly connected with a grinding assembly guide plate 32; the grinding and pushing cylinder piston rod is fixedly connected with the fast-rotating driving support plate 311; the shell of the fast rotation driving motor 315 is fixedly connected with the fast rotation driving support plate 311; the fast rotation driving synchronizing wheel 313 is fixedly connected with an output shaft of the fast rotation driving motor 315; the three fast-rotation driving direction-changing wheels 314 are respectively connected with the fast-rotation driving support plate 311 through revolute pairs; the fast-rotation driving synchronous belt 312 is simultaneously and tightly wound on the three fast-rotation driving direction-changing wheels 314 and the fast-rotation driving synchronous wheel 313, and the fast-rotation driving synchronous belt 312 is meshed with the fast-rotation driving synchronous wheel 313; the axial lines of the three fast-rotation driving direction-changing wheels 314 and the fast-rotation driving synchronous wheel 313 are all arranged along the vertical direction; one section of the fast-rotation driving synchronous belt 312 is arranged along the front-back horizontal direction and is a working edge, and the working edge is positioned at the rightmost side compared with other sections of other fast-rotation driving synchronous belts 312; the fast rotation driving friction plate 317 is fixedly connected with the fast rotation driving support plate 311; a vertical plane is arranged on the quick rotation driving friction plate 317, the vertical plane of the quick rotation driving friction plate 317 is tightly attached to the left side of the first working edge of the quick rotation driving synchronous belt 312 so as to help the quick rotation driving synchronous belt 312 bear the transverse force from the right side, and the sliding friction is generated between the quick rotation driving synchronous belt 312 and the vertical plane of the quick rotation driving friction plate 317; the right fast rotation driving assembly 31 and the left fast rotation driving assembly 31 have the same structure and are bilaterally symmetrical, and the left fast rotation driving assembly 31 and the right fast rotation driving assembly 31 are positioned on the left side and the right side of the motion track of the clamping assembly 53 on the main chain; the grinding plate pair 33 includes a left grinding plate 331 and a right grinding plate 332; the left grinding plate 331 and the right grinding plate 332 are fixedly connected with the frame 9 respectively; the right side surface of the left grinding plate 331 is a left grinding inclined surface 3311, first contour lines obtained by sectioning the left grinding inclined surface 3311 by a section perpendicular to the front-rear direction are all distributed along the upper-left-lower-right direction, the left grinding inclined surface 3311 is not perpendicular to the front-rear direction, but the front end of the left grinding inclined surface 3311 is close to the right and the rear end is close to the left; the left side surface of the right grinding plate 332 is a right grinding inclined surface 3321, second contour lines obtained by cutting the right grinding inclined surface 3321 by a cutting plane vertical to the front-back direction are distributed along the upper right-lower left direction, the right grinding inclined surface 3321 is not vertical to the front-back direction, but the front end of the right grinding inclined surface 3321 is close to the left, and the rear end of the right grinding inclined surface 3321 is close to the right; a chamfer E is arranged between the lower surface of the left grinding plate 331 and the left grinding inclined surface 3311, the left grinding inclined surface 3311 and the right grinding inclined surface 3321 are not in contact at the front ends but are avoided by the chamfer E, a gap is always formed between the left grinding inclined surface 3311 and the right grinding inclined surface 3321 so as to adjust the distance during assembly, and abrasive dust can fall through the gap and cannot be accumulated; the included angle K' between the contour line of the foremost end of the left grinding inclined surface 3311 and the contour line of the foremost end of the right grinding inclined surface 3321 is equal to the conical angle K of the tungsten needle 0; the grinding assembly 3 is positioned right in front of the charging assembly 2; the combination of the clamping assembly 53 and the tungsten needle 0 moves forwards from back along with the main chain, the half sliding sleeve guide plane 5336 and the half sliding sleeve guide plane 5346 play a role in guiding the clamping assembly 53, preventing shaking and preventing the half sliding sleeve inner cylindrical surface 5331 and the half sliding sleeve inner cylindrical surface second 5341 from being away from each other, when viewed from top to bottom, the two fast rotation driving motors 315 of the two fast rotation driving assemblies 31 are simultaneously started clockwise, and the fast rotation driving synchronous belts 312 are driven to run at a high speed at an equal linear speed; the working edge of the left fast rotation driving synchronous belt 312 translates from front to back, the grinding tightening cylinder 34 on the left drives the fast rotation driving assembly 31 on the left to translate rightwards, and the working edge of the left fast rotation driving synchronous belt 312 abuts against the left side of the outer cylindrical surface of the friction wheel 537; the working edge of the right quick rotation driving synchronous belt 312 translates from back to front, the grinding and tightening cylinder 34 on the right drives the quick rotation driving assembly 31 on the right to translate left, and the working edge of the right quick rotation driving synchronous belt 312 abuts against the right side of the outer cylindrical surface of the friction wheel 537; the two fast rotation driving synchronous belts 312 drive the friction wheel 537, the first half jacket 531, the second half jacket 532, the combination of the pressure spring of the half jacket and the tungsten needle 0 to rotate at a high speed and counterclockwise; the combination of the clamping component 53 and the tungsten needle 0 slowly translates from back to front along with the main chain, the lower end of the tungsten needle 0 rotating at a high speed gradually approaches the left grinding inclined surface 3311 and the right grinding inclined surface 3321, and grinding action occurs, and when the combination of the clamping component 53 and the tungsten needle 0 leaves the left grinding inclined surface 3311 and the right grinding inclined surface 3321 from the front end, the lower end of the tungsten needle 0 is changed into a conical end 01; the left grinding inclined surface 3311 and the right grinding inclined surface 3321 are used for grinding simultaneously, so that the grinding speed can be increased, the left side and the right side of the tungsten needle 0 are stressed simultaneously, the stress is balanced, and the tungsten needle 0 is not easy to break; the positive turning discharging component 4 comprises two discharging tensioners 41 and two discharging positive turning components 42; the unloading and aligning component 42 comprises an unloading and aligning cylinder 421, an unloading and aligning bracket 422, an unloading and aligning direction-changing wheel 423, an unloading and aligning driving synchronous wheel 424, an unloading and aligning motor 425, an unloading and aligning push plate 426 and an unloading and aligning synchronous belt 427; the two discharging and correcting assemblies 42 are symmetrically distributed on the left side and the right side of the motion trail of the clamping assembly 53 on the lower side of the main chain; the discharging and aligning cylinder 421 is a cylinder with a guide rod; the discharging and centering cylinder 421 comprises a discharging and centering cylinder body 4211 and a discharging and centering cylinder piston rod 4212; the discharging rotary cylinder 4211 is fixedly connected with the frame 9; the unloading turning support 422 is fixedly connected with an unloading turning cylinder piston rod 4212; the unloading turning direction-changing wheel 423 is connected with the unloading turning support 422 through a rotating pair; the shell of the discharging and turning motor 425 is fixedly connected with the discharging and turning bracket 422; an output shaft of the discharging rotating and centering motor 425 is fixedly connected with the discharging rotating and centering driving synchronous wheel 424; the discharging rotating synchronous belt 427 is tightly wrapped on the discharging rotating driving synchronous wheel 424 and the discharging rotating direction-changing wheel 423; the unloading rotation driving synchronous wheel 424 is meshed with an unloading rotation synchronous belt 427; the discharging turning direction-changing wheel 423 drives the synchronous wheel 424 to be closer to the motion track of the clamping assembly 53 than the discharging turning direction-changing wheel; the unloading turning push plate 426 is fixedly connected with the unloading turning support 422; the unloading rotation and forward pushing plane 4261 is arranged on the unloading rotation and forward pushing plate 426, the unloading rotation and forward pushing plane 4261 is vertical to the left and right direction, the unloading rotation and forward pushing plate 426 is positioned above the unloading rotation and forward direction-changing wheel 423, the unloading rotation and forward pushing plane 4261 is tangent to a quadrant point, closest to the motion track of the clamping assembly 53, of an arc section, wrapped on the unloading rotation and forward direction-changing wheel 423, of the unloading rotation and forward direction-changing synchronous belt 427, and an unloading rotation and forward pushing plate notch 4262 is arranged in a position, opposite to the tangent point, on the unloading rotation and forward pushing plane 4261; the clamping component 53 stops between two quadrant points where the arc segment of the unloading rotating synchronous belt 427 wrapped on the unloading rotating direction-changing wheel 423 is closest to the motion track of the clamping component 53; the two discharging rotating and centering motors 425 simultaneously drive the two discharging rotating and centering driving synchronous wheels 424, the two discharging rotating and centering direction-changing wheels 423 and the two discharging rotating and centering synchronous belts 427 to rotate, and when viewed from top to bottom, the two discharging rotating and centering direction-changing wheels 423 rotate in the counterclockwise direction, and then the two discharging rotating and centering synchronous belts 427 surround the arc sections on the discharging rotating and centering wheels 423 and rotate in the counterclockwise direction; the two discharging and centering cylinders 421 extend simultaneously to drive the two sets of discharging and centering supports 422, the discharging and centering bend wheels 423, the discharging and centering driving synchronous wheel 424, the discharging and centering motor 425, the discharging and centering push plate 426 and the discharging and centering synchronous belt 427 to move horizontally and oppositely; two discharging rotating synchronous belts 427 are wound on the nearest quadrant points of the arc section of the discharging rotating reversing wheel 423 from the motion track of the clamping component 53, the outer cylindrical surface of the friction wheel 537 is simultaneously pressed, the friction wheel 537 is driven to rotate clockwise, the combination of the half jacket one 531, the half jacket two 532, the half jacket pressure spring and the friction wheel 537 rotates along with the rotation, the discharging rotating synchronous belt 421 is blocked and stops extending until the intersected edge of the outer cylindrical surface of the friction wheel 537 and the friction wheel guide surface 5372 is attached to the discharging rotating synchronous belt 427, the operation continues, the edge of the intersected outer cylindrical surface of the friction wheel 537 and the edge of the friction wheel guide surface 5372 slide along the discharging rotating pushing plane 4261, the discharging rotating synchronous belt 427 leaves the friction wheel 537, the two discharging rotating synchronous belts 421 continue extending simultaneously until the discharging rotating pushing plane 4261 and the friction wheel guide surface 5372 are temporarily attached together, the direction of the friction wheel guide surface 5372 is vertical to the left-right direction, and the directions of the first half jacket vertical plane 5312 and the second half jacket vertical plane 5322 are vertical to the left-right direction; the discharging rotating motor 425 stops rotating; two discharging tensioners 41 in the pair of discharging tensioners 41 are bilaterally symmetrical and are respectively positioned at the left side and the right side of the motion track of the clamping component 53 at the lower side of the main chain; the two discharging tensioners 41 are respectively positioned right below the two discharging turning assemblies 42; the discharging tensioner 41 comprises a discharging tensioning cylinder 411 and a discharging tensioning plate 412; the discharging tensioning cylinder 411 comprises a discharging tensioning cylinder body 4111 and a discharging tensioning cylinder piston rod 4112; the discharging tensioning cylinder block 4111 is fixedly connected with the frame 9; the discharging tensioning plate 412 is fixedly connected with a discharging tensioning cylinder piston rod 4112; the two discharging rotating and positive air cylinders 421 contract simultaneously, so that the two discharging rotating and positive pushing planes 4261 leave the friction wheel guide surfaces 5372 on the two sides simultaneously, the two discharging tensioning air cylinders 411 contract simultaneously, the two discharging tensioning plates 412 are simultaneously abutted and pull the half sliding sleeve I533 and the half sliding sleeve II 534 towards the two sides, the half sliding sleeve I533 and the half sliding sleeve II 534 respectively translate back and forth along the clamping guide rod 5351, the half sliding sleeve T-shaped tenon I5332 and the half sliding sleeve T-shaped tenon II 5342 are far away from each other, the half clamping sleeve I531 and the half clamping sleeve II 532 are respectively dragged through the half clamping sleeve T-shaped groove I5314 and the half clamping sleeve T-shaped groove II 5324, the half clamping sleeve I531 and the half clamping sleeve II 532 are far away from each other along the half clamping guide rod 5315 by overcoming the elastic pressure of the half clamping sleeve pressure spring, the half clamping hole I5313 and the half clamping hole II 5323 of the half clamping sleeve are far away from each other, the ground tungsten needle 0 falls away from the space, falls into the product bin 8 below.

The working process of this embodiment is as follows. 1) The servo motor 10 drives the chain assembly 5 to intermittently operate through the driving chain wheel assembly 7, the upper edge of the main chain horizontally translates from back to front, and the lower edge of the main chain horizontally translates from front to back; the gripper assemblies 53 intermittently translate horizontally from front to back at the lower side of the main chain as they intermittently translate horizontally from back to front at the upper side of the main chain. 2) The clamping assembly 53 stops between two quadrant points of an arc segment of the charging rotation synchronous belt 117 wrapped on the charging rotation direction-changing wheel 113 and closest to the motion track of the clamping assembly 53; the two charging turning motors 115 simultaneously drive the two charging turning driving synchronous wheels 114, the two charging turning direction-changing wheels 113 and the two charging turning synchronous belts 117 to rotate, and when viewed from top to bottom, the two charging turning direction-changing wheels 113 rotate in the counterclockwise direction, so that the two arc sections of the charging turning synchronous belts 117 wrapped on the charging turning direction-changing wheels 113 rotate in the counterclockwise direction; the two charging turning cylinders 111 extend simultaneously to drive the two sets of charging turning supports 112, the charging turning direction-changing wheel 113, the charging turning driving synchronizing wheel 114, the charging turning motor 115, the charging turning push plate 116 and the charging turning synchronizing belt 117 to move horizontally and oppositely; two 'loading rotating and centering synchronous belts 117 wrap the arc section on the loading rotating and centering change-over wheel 113 and are closest to the quadrant point of the motion track of the clamping assembly 53', the outer cylindrical surface of the friction wheel 537 is simultaneously pressed, the friction wheel 537 is driven to rotate clockwise, the combination of the half jacket one 531, the half jacket two 532, the half jacket pressure spring and the friction wheel 537 rotates along with the rotation, the loading rotating and centering cylinder 111 is blocked and stops extending until 'the intersected edge of the outer cylindrical surface of the friction wheel 537 and the guide surface 5372 of the friction wheel' is attached to the loading rotating and centering synchronous belt 117, the operation is continued, then 'the intersected edge of the outer cylindrical surface of the friction wheel 537 and the guide surface 5372 of the friction wheel' slides along the loading rotating and centering push plane 1161, the loading rotating and centering synchronous belt 117 leaves the friction wheel 537, the two loading rotating and centering cylinders 111 continue extending simultaneously until the loading rotating and centering push plane 1161 and the guide surface 5372 of the friction wheel are temporarily attached together, the direction of the friction wheel guide surface 5372 is vertical to the left-right direction, and the directions of the first half jacket vertical plane 5312 and the second half jacket vertical plane 5322 are vertical to the left-right direction; the charging rotating and centering motor 115 stops rotating, the charging rotating and centering cylinder 111 stops pushing force and keeps at the position, and the guiding function can be continuously provided for the guide surface 5372 of the friction wheel; in practical applications, the stroke position of the charge-to-positive cylinder 111 may be detected by a stroke sensor. If the loading rotating and forward pushing plane 1161 is firstly contacted with the edge where the outer cylindrical surface of the friction wheel 537 and the friction wheel guide surface 5372 are intersected, the two loading rotating and forward cylinders 111 continue to extend simultaneously until the loading rotating and forward pushing plane 1161 and the friction wheel guide surface 5372 are completely attached together, and the direction of the friction wheel guide surface 5372 is perpendicular to the left-right direction. 3) The clamping assembly 53 horizontally translates from back to front along the upper edge of the main chain, the friction wheel guide surface 5372 leaves the charging rotation pushing plane 1161, the friction wheel guide surface 5372 enters a space between the right side surface of the left charging centralizing guide plate 23 and the left side surface of the right charging centralizing guide plate 23, and the space is guided to prevent the combined rotation of the first half jacket 531, the second half jacket 532, the pressure spring of the half jacket and the friction wheel 537, so that the first half jacket 531 and the second half jacket 532 are ensured to be on the left and the other on the right. 4) The clamping assembly 53 between the two charging centralizing guide plates 23 stops when the two charging tensioning plates 212 are respectively positioned between the 'half sliding sleeve bearing surface one 5335 and the half sliding sleeve inner cylindrical surface one 5331' and between the 'half sliding sleeve bearing surface two 5345 and the half sliding sleeve inner cylindrical surface two 5341', the two charging tensioning cylinders 211 of the pair of charging tensioners 21 contract simultaneously, the two charging tensioning plates 212 are close to each other simultaneously and pull the first half sliding sleeve 533 and the second half sliding sleeve 534 towards two sides, the first half sliding sleeve 533 and the second half sliding sleeve 534 respectively translate back to back along the clamping guide rod 5351, the first half sliding sleeve T-shaped tenon 5332 and the second half sliding sleeve T-shaped tenon 5342 are far away from each other, the first half clamping sleeve 531 and the second half clamping sleeve 532 are respectively pulled through the first half clamping sleeve T-shaped groove 5314 and the second half clamping sleeve T-shaped groove 5324, the first half clamping sleeve 531 and the second half clamping sleeve 532 are far away from each other along the guide rod 5315 of the half clamping sleeve by overcoming the elastic pressure of the compression spring of the half clamping sleeve, and the first half clamping hole 5313; the mutual distance described above is not symmetrical, but the distance moved by the second half-jacket 532 is greater, and since the friction wheel guide surface 5372 is confined between the two charge centralizing guide plates 23, the first half-jacket 531 is entrained, and the distance moved is smaller or does not move; the distance between the half clamping hole I5313 of the half clamping sleeve and the half clamping hole II 5323 of the half clamping sleeve is not large and is only 1 to 2 millimeters; the worker puts the unground tungsten needle 0 between the half-jacket half-clamping hole one 5313 and the half-jacket half-clamping hole two 5323 through the guide hole 5371, and the lower end of the tungsten needle 0 is supported by the lower loading supporting plate 22. Before the main chain is started next time, the two charging tensioning cylinders 211 are simultaneously stretched, the half-sliding sleeve T-shaped tenon I5332 and the half-sliding sleeve T-shaped tenon II 5342 release the half-jacket I531 and the half-jacket II 532, the half-jacket I531 and the half-jacket II 532 approach each other along the half-jacket guide rod 5315 under the action of the elastic pressure of the half-jacket pressure spring, the half-jacket half-clamping hole I5313 and the half-jacket half-clamping hole II 5323 clamp the straight rod part 02 of the tungsten needle 0 in the middle together, the outer semi-cylindrical surface I5311 and the outer semi-cylindrical surface II 5321 form a complete outer cylindrical surface again, and the half-jacket T-shaped groove I5314 and the half-jacket T-shaped groove II 5324 form a T-shaped groove in a re-. Under the action of the elastic pressure of the half sliding sleeve compression spring 536, the half sliding sleeve first 533 and the half sliding sleeve second 534 are close to each other, and the half sliding sleeve inner cylindrical surface first 5331 and the half sliding sleeve inner cylindrical surface second 5341 are aligned together again to form a complete inner cylindrical surface. 5) The combination of the clamping assembly 53 and the tungsten needle 0 horizontally translates from back to front along the upper edge of the main chain, the friction wheel guide surface 5372 leaves the two charging centralizing guide plates 23, then the 'half sliding sleeve guide surface one 5336 and the half sliding sleeve guide surface two 5346' enter between the two grinding assembly guide plates 32, and horizontally translates from back to front under the guiding action of the two grinding assembly guide plates 32, so that the clamping assembly 53 can be prevented from shaking, and the half sliding sleeve inner cylindrical surface one 5331 and the half sliding sleeve inner cylindrical surface two 5341 can be prevented from being away from each other. Two fast rotation driving motors 315 of the two fast rotation driving assemblies 31 are started clockwise at the same time to drive the fast rotation driving synchronous belt 312 to run at a high speed at an equal linear speed; the left grinding and tightening cylinder 34 drives the left fast rotation driving assembly 31 to translate rightwards, and the left fast rotation drives the working edge of the synchronous belt 312 to abut against the left side of the outer cylindrical surface of the friction wheel 537; the working edge of the right quick rotation driving synchronous belt 312 translates from back to front, the grinding and tightening cylinder 34 on the right drives the quick rotation driving assembly 31 on the right to translate left, and the working edge of the right quick rotation driving synchronous belt 312 abuts against the right side of the outer cylindrical surface of the friction wheel 537; the two fast rotation driving synchronous belts 312 drive the friction wheel 537, the first half jacket 531, the second half jacket 532, the combination of the pressure spring of the half jacket and the tungsten needle 0 to rotate at a high speed and counterclockwise; the combination of the holding component 53 and the tungsten needle 0 is slowly translated from back to front along with the main chain, the lower end of the tungsten needle 0 rotating at a high speed is gradually close to the left grinding inclined surface 3311 and the right grinding inclined surface 3321, and a grinding effect is generated, and when the combination of the holding component 53 and the tungsten needle 0 leaves the left grinding inclined surface 3311 and the right grinding inclined surface 3321 from the front end, the lower end of the tungsten needle 0 is ground and converted into a conical end 01. 6) The combination of the clamping component 53 and the tungsten needle 0 horizontally translates from back to front along the upper edge of the main chain and bypasses the lower edge of the driving chain wheel component 7 in front, when the clamping component 53 stops between two quadrant points of the arc segment of the discharging rotating synchronous belt 427 wrapped on the discharging rotating direction-changing wheel 423, which is closest to the motion track of the clamping component 53: the two discharging rotating and centering motors 425 simultaneously drive the two discharging rotating and centering driving synchronous wheels 424, the two discharging rotating and centering direction-changing wheels 423 and the two discharging rotating and centering synchronous belts 427 to rotate, and when viewed from top to bottom, the two discharging rotating and centering direction-changing wheels 423 rotate in the counterclockwise direction, and then the two discharging rotating and centering synchronous belts 427 surround the arc sections on the discharging rotating and centering wheels 423 and rotate in the counterclockwise direction; the two discharging and centering cylinders 421 extend simultaneously to drive the two sets of discharging and centering supports 422, the discharging and centering bend wheels 423, the discharging and centering driving synchronous wheel 424, the discharging and centering motor 425, the discharging and centering push plate 426 and the discharging and centering synchronous belt 427 to move horizontally and oppositely; two discharging rotating synchronous belts 427 are wound on the nearest quadrant points of the arc section of the discharging rotating reversing wheel 423 from the motion track of the clamping component 53, the outer cylindrical surface of the friction wheel 537 is simultaneously pressed, the friction wheel 537 is driven to rotate clockwise, the combination of the half jacket one 531, the half jacket two 532, the half jacket pressure spring and the friction wheel 537 rotates along with the rotation, the discharging rotating synchronous belt 421 is blocked and stops extending until the intersected edge of the outer cylindrical surface of the friction wheel 537 and the friction wheel guide surface 5372 is attached to the discharging rotating synchronous belt 427, the operation continues, the edge of the intersected outer cylindrical surface of the friction wheel 537 and the edge of the friction wheel guide surface 5372 slide along the discharging rotating pushing plane 4261, the discharging rotating synchronous belt 427 leaves the friction wheel 537, the two discharging rotating synchronous belts 421 continue extending simultaneously until the discharging rotating pushing plane 4261 and the friction wheel guide surface 5372 are temporarily attached together, the direction of the friction wheel guide surface 5372 is vertical to the left-right direction, and the directions of the first half jacket vertical plane 5312 and the second half jacket vertical plane 5322 are vertical to the left-right direction; the discharge turning motor 425 stops rotating. The two discharging rotating and positive air cylinders 421 contract simultaneously, so that the two discharging rotating and positive pushing planes 4261 leave the friction wheel guide surfaces 5372 on the two sides simultaneously, the two discharging tensioning air cylinders 411 contract simultaneously, the two discharging tensioning plates 412 are simultaneously abutted and pull the half sliding sleeve I533 and the half sliding sleeve II 534 towards the two sides, the half sliding sleeve I533 and the half sliding sleeve II 534 respectively translate back and forth along the clamping guide rod 5351, the half sliding sleeve T-shaped tenon I5332 and the half sliding sleeve T-shaped tenon II 5342 are far away from each other, the half clamping sleeve I531 and the half clamping sleeve II 532 are respectively dragged through the half clamping sleeve T-shaped groove I5314 and the half clamping sleeve T-shaped groove II 5324, the half clamping sleeve I531 and the half clamping sleeve II 532 are far away from each other along the half clamping guide rod 5315 by overcoming the elastic pressure of the half clamping sleeve pressure spring, the half clamping hole I5313 and the half clamping hole II 5323 of the half clamping sleeve are far away from each other, the ground tungsten needle 0 falls away from the space, falls into the product bin 8 below. Before the main chain is started next time, the two discharging rotating and centering cylinders 421 are simultaneously extended, the half sliding sleeve T-shaped tenon 5332 and the half sliding sleeve T-shaped tenon 5342 release the half jacket first 531 and the half jacket second 532, the half jacket first 531 and the half jacket second 532 are close to each other along the half jacket guide rod 5315 under the action of the elastic pressure of the half jacket pressure spring, and the half jacket half clamping hole first 5313 and the half jacket half clamping hole second 5323 are combined together. Under the action of the elastic pressure of the half sliding sleeve compression spring 536, the half sliding sleeve first 533 and the half sliding sleeve second 534 are close to each other, and the half sliding sleeve inner cylindrical surface first 5331 and the half sliding sleeve inner cylindrical surface second 5341 are aligned together again to form a complete inner cylindrical surface.

The clamping assembly 53 follows the main chain around the direction changing sprocket assembly 6 into the next round of circulation. All of the gripper assemblies 53 are in such a cycle one by one. Generally, the finished product bin 8 is positioned right below the loading assembly 2, a worker can take a tungsten needle 0 which is ground from the finished product bin 8 below without moving the position or moving the position for a short time by putting the blunt tungsten needle 0 into the guide hole 5371 of the loading assembly 2, and the operation is convenient. The steps 1) to 6) are continuously and circularly repeated, so that the blunt tungsten needle 0 which is randomly put in can be automatically ground and put in a finished product bin 8. It is also possible that no worker exchanges the tungsten needle 0 for a certain period of time, the clamping assembly 53 does not carry the tungsten needle 0 into the grinding assembly 3, the presence or absence of the tungsten needle 0 can be detected by a sensor, if the tungsten needle 0 is absent, the fast rotation driving motor 315 and the grinding pushing cylinder 34 may not be started, and the clamping assembly 53 idles for one turn along with the main chain. The embodiment can be opened before work, and the operation is continued until workers are stopped to exchange tungsten needles at any time after work, and the tungsten needles 0 in the finished product bin 8 have some surplus.

The beneficial effects of this embodiment: the blunt tungsten needle can be put into in the time quantum of main chain down, and the master worker exchanges at random and takes, need not have special personnel on duty, and automatic work uses manpower sparingly, need not wait for, prevents waste time, and easy operation is convenient. Anti-shaking measures are taken at the high-speed running part to prevent the tungsten needle from being broken. The two grinding inclined planes are ground simultaneously, so that the grinding speed can be increased, the left side and the right side of the tungsten needle are stressed simultaneously, the stress is balanced, and the tungsten needle is not easy to break.

Claims

1. An automatic sharpening device for tungsten needle random feeding continuous work comprises a chain assembly, a redirection chain wheel assembly, a driving chain wheel assembly, a rack and a servo motor;

the redirection chain wheel assembly comprises two redirection chain wheels and a redirection chain wheel shaft, the two redirection chain wheels are respectively and fixedly connected with the redirection chain wheel shaft, and the redirection chain wheel shaft is connected with the rack through a rotating pair; the driving chain wheel assembly comprises two driving chain wheels and a driving chain wheel shaft, the two driving chain wheels are fixedly connected with the driving chain wheel shaft respectively, and the driving chain wheel shaft is connected with the rack through a rotating pair; the driving chain wheel assembly is arranged at the front edge of the redirection chain wheel assembly; the shell of the servo motor is fixedly connected with the frame, and the output shaft of the servo motor is fixedly connected with the driving chain wheel shaft; the chain assembly comprises a main chain, and the main chain comprises a left chain and a right chain; the specifications of the left chain and the right chain are the same; the left direction-changing chain wheel and the left driving chain wheel are aligned front and back, and are respectively meshed with the left chain; the right direction-changing chain wheel and the right driving chain wheel are aligned front and back, and the right direction-changing chain wheel and the right driving chain wheel are respectively meshed with the right chain;

the grinding machine is characterized by also comprising a charging and turning component pair, a charging component, a grinding component and a turning and discharging component;

the chain assembly further comprises a plurality of clamping assemblies;

the clamping assembly comprises a first half jacket, a second half jacket, a first half sliding sleeve, a second half sliding sleeve, a guide rod assembly, four pressure springs of the half sliding sleeves, two pressure springs of the half jackets and a friction wheel;

the guide rod assembly comprises two clamping guide rods and two connecting chain plates, one of the two connecting chain plates is arranged on the left side of the other connecting chain plate, the axial lead of the two clamping guide rods is arranged along the left-right horizontal direction, two ends of each clamping guide rod are fixedly connected with the two connecting chain plates respectively, and one of the two clamping guide rods is arranged in front of the other connecting chain plate; the middle part of the clamping guide rod is provided with a clamping guide rod middle boss; the two connecting chain plates are respectively connected to the left chain and the right chain, and the plurality of clamping assemblies are distributed at equal intervals along the circumferential direction of the main chain;

the first half sliding sleeve is provided with a first half sliding sleeve inner cylindrical surface, the first half sliding sleeve inner cylindrical surface is a half inner cylindrical surface, the axial lead of the first half sliding sleeve inner cylindrical surface is vertical, and the opening faces the right; a quadrant point position of the inner cylindrical surface I of the half sliding sleeve close to the left side is provided with a half sliding sleeve T-shaped tenon I; a first half sliding sleeve positioning surface and a first half sliding sleeve pull bearing surface which face rightwards are arranged on the first half sliding sleeve; the half sliding sleeve I is provided with a half sliding sleeve guiding plane I facing to the left; the bearing surface of the half sliding sleeve is closer to the left than the inner cylindrical surface of the half sliding sleeve; a first half sliding sleeve guide hole is formed in a first half sliding sleeve positioning surface, the central line of the first half sliding sleeve guide hole is arranged along the left-right horizontal direction, the first half sliding sleeve guide hole is through from left to right, and the left end of the first half sliding sleeve guide hole is opened on a first half sliding sleeve guide plane;

a second half sliding sleeve inner cylindrical surface is arranged on the second half sliding sleeve, a second half inner cylindrical surface is arranged on the second half sliding sleeve inner cylindrical surface, the axial lead of the second half sliding sleeve inner cylindrical surface is vertical, and the opening faces the left; a quadrant point position of the inner cylindrical surface II of the half sliding sleeve, which is close to the right side, is provided with a half sliding sleeve T-shaped tenon II; the half sliding sleeve II is provided with a half sliding sleeve positioning surface II facing the left and a half sliding sleeve pull-bearing surface II; a second half sliding sleeve guide plane facing rightwards is arranged on the second half sliding sleeve; the bearing surface II of the half sliding sleeve is closer to the right than the inner cylindrical surface II of the half sliding sleeve; a second half sliding sleeve guide hole is formed in the second half sliding sleeve positioning surface, the central line of the second half sliding sleeve guide hole is arranged along the left horizontal direction and the right horizontal direction, the second half sliding sleeve guide hole is through from left to right, and the right end of the second half sliding sleeve guide hole is opened on the second half sliding sleeve guide plane;

the two half sliding sleeve guide holes I are respectively in sliding fit with shaft sections of the two clamping guide rods, which are positioned on the left side of the boss in the clamping guide rod, a half sliding sleeve pressure spring on the left side is sleeved on the clamping guide rod, the left end of the half sliding sleeve pressure spring on the left side presses a connecting chain plate on the left side, the right end of the half sliding sleeve pressure spring on the left side presses a half sliding sleeve guide plane I, and a half sliding sleeve positioning plane I presses the left end face of the boss in the clamping guide;

two half sliding sleeve guide holes II are respectively in sliding fit with shaft sections of the two clamping guide rods, which are positioned on the right side of the protruding table in the clamping guide rods, the right half sliding sleeve pressure spring is sleeved on the clamping guide rods, the right end of the right half sliding sleeve pressure spring presses the right connecting chain plate, the left end of the right half sliding sleeve pressure spring presses the half sliding sleeve guide plane II, and the half sliding sleeve positioning plane II presses the right end face of the protruding table in the clamping guide rods; the first half sliding sleeve inner cylindrical surface and the second half sliding sleeve inner cylindrical surface are paired together to form a complete inner cylindrical surface;

the semi-jacket first is a half revolving body, the revolving axis line of the semi-jacket first is arranged along the vertical direction, the semi-jacket first is provided with an outer semi-cylindrical surface first and a vertical semi-jacket vertical plane first, the semi-jacket vertical plane first is vertical to the left-right direction, the outer semi-cylindrical surface first is provided with a semi-annular semi-jacket T-shaped groove first, and the semi-jacket vertical plane first is provided with a vertical semi-jacket hole first; a half jacket guide rod is arranged on the half jacket vertical plane I, the axis line of the half jacket guide rod is arranged along the left-right horizontal direction, the first end of the half jacket guide rod is arranged on the half jacket vertical plane I, and the second end of the half jacket guide rod is provided with a half jacket stop block;

the second half jacket is a half revolving body, the revolving axis line of the second half jacket is arranged along the vertical direction, the second half jacket is provided with a second outer semi-cylindrical surface and a second vertical half jacket vertical plane, the second half jacket vertical plane is vertical to the left and right direction, the second outer semi-cylindrical surface is provided with a second semi-annular half jacket T-shaped groove, and the second half jacket vertical plane is provided with a second vertical half jacket hole; a half jacket guide hole is formed in the half jacket vertical plane II, the first end opening of the half jacket guide hole is formed in the half jacket vertical plane II, and the second end opening of the half jacket guide hole is communicated with the compression spring chamber;

the first half jacket vertical plane and the second half jacket vertical plane are opposite, the guide rod of the half jacket is in sliding fit with the guide hole of the half jacket, a pressure spring of the half jacket is sleeved on the guide rod of the half jacket and is positioned in a compression spring chamber, one end of the pressure spring of the half jacket is pressed against the end surface of the second end of the guide hole of the half jacket, the other end of the pressure spring of the half jacket is pressed against a stop block of the half jacket, the opening of the first half jacket hole is opposite to the opening of the second half jacket hole, under the pressure action of a pressure spring of the half jacket, the first half jacket and the second half jacket are close to each other, the first half jacket half clamping hole and the second half jacket half clamping hole clamp a straight rod part of the tungsten needle positioned in the middle together, the first outer semi-cylindrical surface and the second outer semi-cylindrical surface form a complete outer cylindrical surface, and the outer cylindrical surface formed by the first outer semi-cylindrical surface and the second outer semi-cylindrical surface is matched with the inner cylindrical surface formed by the first half sliding sleeve inner cylindrical surface and the second half sliding sleeve inner cylindrical surface to form a rotating pair; the first half-jacket T-shaped groove and the second half-jacket T-shaped groove are paired together to form an annular T-shaped groove, and the first half-sliding sleeve T-shaped tenon and the second half-sliding sleeve T-shaped tenon are respectively in sliding fit with the annular T-shaped groove;

the friction wheel is provided with an outer cylindrical surface, the axis of the friction wheel is arranged along the vertical direction, a guide hole which is through up and down is arranged at the center of the friction wheel, and the diameter of the upper end of the guide hole is large, and the diameter of the lower end of the guide hole is small; the lower end of the friction wheel is fixedly connected with the upper end of the first half jacket, and the axial lead of the friction wheel is superposed with the axial lead of the first half jacket; the lower end of the guide hole is communicated with the upper end of a hole formed by the half clamping hole I of the half clamping sleeve and the half clamping hole II of the half clamping sleeve; removing a material from the left-right symmetrical positions of the upper end of the friction wheel to form friction wheel guide surfaces, wherein the friction wheel guide surfaces are vertical to the left-right direction;

the servo motor drives the chain assembly to intermittently operate through the driving chain wheel assembly, the upper edge of the main chain horizontally translates from back to front, and the lower edge of the main chain horizontally translates from front to back; the clamping assembly intermittently horizontally translates from back to front at the lower side of the main chain along with intermittently horizontally translating from back to front at the upper side of the main chain;

the charging turning component pair comprises two charging turning components;

the charging turning assembly comprises a charging turning cylinder, a charging turning support, a charging turning direction-changing wheel, a charging turning driving synchronous wheel, a charging turning motor, a charging turning push plate and a charging turning synchronous belt; the two charging turning assemblies are distributed on the left side and the right side of the motion trail of the clamping assembly on the main chain in a bilateral symmetry manner;

the charging rotating cylinder is a cylinder with a guide rod; the charging turning cylinder comprises a charging turning cylinder body and a charging turning cylinder piston rod; the charging turning cylinder body is fixedly connected with the frame; the charging turning support is fixedly connected with a piston rod of a charging turning cylinder; the charging turning direction-changing wheel is connected with the charging turning support through a rotating pair; the shell of the charging turning motor is fixedly connected with the charging turning bracket; an output shaft of the charging rotation motor is fixedly connected with a charging rotation driving synchronous wheel; the charging turning direction-changing wheel and the charging turning driving synchronous wheel are respectively meshed with the charging turning synchronous belt; the charging rotation direction-changing wheel drives the synchronous wheel to be closer to the motion track of the clamping assembly than the charging rotation direction-changing wheel; the charging turning push plate is fixedly connected with the charging turning support; the loading rotating and positive pushing plate is provided with a loading rotating and positive pushing plane which is vertical to the left and right direction, the loading rotating and positive pushing plate is positioned below the loading rotating and positive direction changing wheel, the loading rotating and positive pushing plane is tangent to a quadrant point which is the closest to the motion track of the clamping assembly and is arranged on an arc section which is wound on the loading rotating and positive direction changing wheel by the loading rotating and positive synchronous belt, and a loading rotating and positive pushing plate notch is arranged at a position which is opposite to the tangent point on the loading rotating and positive pushing plane up and down;

the clamping assembly is stopped between two quadrant points of an arc section of the charging rotating synchronous belt wound on the charging rotating reversing wheel and closest to the motion trail of the clamping assembly; the two charging rotating motors simultaneously drive the two charging rotating driving synchronous wheels, the two charging rotating direction-changing wheels and the two charging rotating synchronous belts to rotate, and when viewed from top to bottom, the two charging rotating direction-changing wheels rotate in the anticlockwise direction, so that the two arc sections of the charging rotating synchronous belts wound on the charging rotating direction-changing wheels rotate in the anticlockwise direction; the two charging turning cylinders extend simultaneously to drive the two sets of charging turning supports, the charging turning direction-changing wheel, the charging turning driving synchronous wheel, the charging turning motor, the charging turning push plate and the charging turning synchronous belt to move horizontally and oppositely; two charging rotating synchronous belts are wound on a quadrant point of an arc section on the charging rotating positive change wheel, which is closest to the motion trail of the clamping assembly, and simultaneously press the outer cylindrical surface of the friction wheel, and drives the friction wheel to rotate clockwise, the combination of the first half jacket, the second half jacket, the pressure spring of the half jacket and the friction wheel rotates, the charging rotating cylinder is blocked to stop extending until 'the edge where the outer cylindrical surface of the friction wheel and the guide surface of the friction wheel are intersected' is attached to the charging rotating synchronous belt, the operation is continued, the crossed edges of the outer cylindrical surface of the friction wheel and the guide surface of the friction wheel slide along the charging forward-pushing plane, the charging forward-pushing synchronous belt leaves the friction wheel, the two charging forward-pushing cylinders continue to extend simultaneously until the charging forward-pushing plane and the guide surface of the friction wheel are completely attached together, the direction of the guide surface of the friction wheel is perpendicular to the left-right direction, and the directions of the first half-jacket vertical plane and the second half-jacket vertical plane are perpendicular to the left-right direction; the charging rotating and centering motor stops rotating, and the charging rotating and centering cylinder stops thrust and keeps at the position;

the charging assembly comprises two pairs of charging tensioners, a charging lower supporting plate and two charging centralizing guide plates; the two charging centralizing guide plates are respectively and fixedly connected with the rack, and the right side surface of the charging centralizing guide plate on the left and the left side surface of the charging centralizing guide plate on the right are in sliding fit with the two friction wheel guide surfaces;

two charging tensioners in the pair of charging tensioners are bilaterally symmetrical and are respectively positioned on the left side and the right side of the motion trail of the clamping component on the upper side of the main chain; the charging tensioner comprises a charging tensioning cylinder and a charging tensioning plate; the charging tensioning cylinder comprises a charging tensioning cylinder body and a charging tensioning cylinder piston rod; the charging tensioning cylinder body is fixedly connected with the frame; the charging tensioning plate is fixedly connected with a piston rod of a charging tensioning cylinder; the charging lower supporting plate is positioned right below the combined holes of the half clamping hole I of the half clamping sleeve and the half clamping hole II of the half clamping sleeve; two charging tensioning cylinders of the charging tensioners contract, the two charging tensioning plates simultaneously lean against and pull the first half sliding sleeve and the second half sliding sleeve towards two sides, the first half sliding sleeve and the second half sliding sleeve respectively move back and forth along the clamping guide rod, the first half sliding sleeve T-shaped tenon and the second half sliding sleeve T-shaped tenon are far away from each other, the first half clamping sleeve and the second half clamping sleeve are respectively dragged by the first half clamping sleeve T-shaped groove and the second half clamping sleeve T-shaped groove, the first half clamping sleeve and the second half clamping sleeve overcome the elastic pressure of a compression spring of the half clamping sleeve and are far away from each other along the guide rod of the half clamping sleeve, and the first half clamping hole of the half clamping; the charging assembly is positioned right in front of the charging turning assembly pair;

the grinding assembly comprises a quick-rotating driving assembly, two grinding assembly guide plates, a grinding plate pair, a grinding push-up cylinder and a grinding push-up linear guide rail;

the two grinding assembly guide plates are positioned on the left side and the right side of the motion trail of the clamping assembly on the main chain; the two grinding assembly guide plates are respectively fixedly connected with the rack; the right side surface of the left grinding assembly guide plate is tightly attached to the half sliding sleeve guide plane I, the left side surface of the right grinding assembly guide plate is tightly attached to the half sliding sleeve guide plane II, and the clamping assembly moves horizontally under the guide action of the two grinding assembly guide plates;

the left fast rotation driving assembly comprises a fast rotation driving support plate, a fast rotation driving synchronous belt, a fast rotation driving synchronous wheel, a fast rotation driving bend wheel, a fast rotation driving motor, a fast rotation driving slide block and a fast rotation driving friction plate; the fast rotation driving slide block is fixedly connected with the fast rotation driving support plate; the grinding and tightening linear guide rail on the left side is fixedly connected with the grinding assembly guide plate on the left side, and the grinding and tightening linear guide rail is arranged along the left-right horizontal direction; the fast-rotation driving slide block and the grinding and pushing linear guide rail form a linear guide rail pair; the grinding and pushing cylinder comprises a grinding and pushing cylinder body and a grinding and pushing cylinder piston rod; the grinding and pushing cylinder body is fixedly connected with the grinding component guide plate; the grinding and pushing cylinder piston rod is fixedly connected with the fast-rotating driving support plate; the shell of the fast-rotation driving motor is fixedly connected with the fast-rotation driving support plate; the fast-rotation driving synchronous wheel is fixedly connected with an output shaft of the fast-rotation driving motor; the three fast-rotation driving direction-changing wheels are respectively connected with the fast-rotation driving support plate through revolute pairs; the fast-rotation driving synchronous belt is simultaneously tensioned and wrapped on the three fast-rotation driving direction-changing wheels and the fast-rotation driving synchronous wheel, and the fast-rotation driving synchronous belt is meshed with the fast-rotation driving synchronous wheel; the axial leads of the three fast rotation driving direction-changing wheels and the fast rotation driving synchronizing wheel are all arranged along the vertical direction; one section of the fast rotation driving synchronous belt is arranged along the front-back horizontal direction and is a working edge, and the working edge is positioned at the rightmost side compared with other sections of the fast rotation driving synchronous belt; the quick rotation driving friction plate is fixedly connected with the quick rotation driving support plate; a vertical plane is arranged on the quick rotation driving friction plate, and the vertical plane of the quick rotation driving friction plate is tightly attached to the left side of the first working edge of the quick rotation driving synchronous belt;

the right fast rotation driving assembly and the left fast rotation driving assembly have the same structure and are bilaterally symmetrical, and the left fast rotation driving assembly and the right fast rotation driving assembly are positioned on the left side and the right side of the motion trail of the clamping assembly on the main chain;

the grinding plate pair comprises a left grinding plate and a right grinding plate; the left grinding plate and the right grinding plate are respectively fixedly connected with the frame;

the right side surface of the left grinding plate is a left grinding inclined surface, first contour lines obtained by sectioning the left grinding inclined surface by a section plane vertical to the front-back direction are distributed along the left upper-right lower direction, the left grinding inclined surface is not vertical to the front-back direction, but the front end of the left grinding inclined surface is close to the right, and the rear end of the left grinding inclined surface is close to the left;

the left side surface of the right grinding plate is a right grinding inclined surface, second contour lines obtained by sectioning the right grinding inclined surface by a section plane vertical to the front-back direction are distributed along the upper right-lower left direction, the right grinding inclined surface is not vertical to the front-back direction, but the front end of the right grinding inclined surface is close to the left, and the rear end of the right grinding inclined surface is close to the right; a chamfer is arranged between the lower surface of the left grinding plate and the left grinding inclined surface; the included angle between the contour line of the foremost end of the left grinding inclined plane and the contour line of the foremost end of the right grinding inclined plane is equal to the conical angle of the tungsten needle; the grinding assembly is positioned right in front of the charging assembly;

the combination of the clamping assembly and the tungsten needle translates forwards from back along with the main chain, and when viewed from top to bottom, two fast rotation driving motors of the two fast rotation driving assemblies start clockwise at the same time to drive the fast rotation driving synchronous belts to run at equal linear speed;

the working edge of the left quick rotation driving synchronous belt translates from front to back, the grinding pushing cylinder on the left drives the quick rotation driving assembly on the left to translate rightwards, and the working edge of the left quick rotation driving synchronous belt is close to the left side of the outer cylindrical surface of the friction wheel;

the working edge of the right quick rotation driving synchronous belt translates from back to front, the grinding and pushing cylinder on the right drives the quick rotation driving assembly on the right to translate left, and the working edge of the right quick rotation driving synchronous belt is close to the right side of the outer cylindrical surface of the friction wheel;

the two fast rotation driving synchronous belts drive the friction wheel, the half jacket I, the half jacket II, the half jacket pressure spring and the tungsten needle to rotate anticlockwise; when the combination of the clamping assembly and the tungsten needle leaves the left grinding inclined plane and the right grinding inclined plane from the front end, the lower end of the tungsten needle is converted into a conical end;

the positive rotating and discharging assembly comprises two discharging tensioners and two discharging positive rotating assemblies;

the unloading turning component comprises an unloading turning cylinder, an unloading turning support, an unloading turning direction-changing wheel, an unloading turning driving synchronous wheel, an unloading turning motor, an unloading turning push plate and an unloading turning synchronous belt; the two unloading rotation assemblies are symmetrically distributed on the left side and the right side of the motion trail of the clamping assembly on the lower side of the main chain;

the discharging and correcting cylinder is a cylinder with a guide rod; the discharging and correcting cylinder comprises a discharging and correcting cylinder body and a discharging and correcting cylinder piston rod; the discharging turning cylinder body is fixedly connected with the frame; the unloading turning support is fixedly connected with a piston rod of the unloading turning cylinder; the unloading turning direction-changing wheel is connected with the unloading turning support through a rotating pair; the shell of the unloading turning motor is fixedly connected with the unloading turning bracket; the output shaft of the unloading rotation motor is fixedly connected with the unloading rotation driving synchronous wheel; the unloading turning synchronous belt is tightly wrapped on the unloading turning driving synchronous wheel and the unloading turning bend wheel; the unloading rotation driving synchronous wheel is meshed with the unloading rotation synchronous belt; the unloading rotation direction-changing wheel drives the synchronous wheel to be closer to the motion track of the clamping assembly than the unloading rotation direction-changing wheel; the unloading turning push plate is fixedly connected with the unloading turning support; the unloading forward-rotating push plate is provided with an unloading forward-rotating push plane, the unloading forward-rotating push plane is perpendicular to the left and right direction, the unloading forward-rotating push plate is positioned above the unloading forward-rotating bend wheel, the unloading forward-rotating push plane is tangent to a quadrant point, closest to the motion trail of the clamping assembly, of an arc section, wrapped on the unloading forward-rotating bend wheel, of the unloading forward-rotating synchronous belt, and a unloading forward-rotating push plate notch is arranged at a position, opposite to the tangent point, on the unloading forward-rotating push plane;

the clamping assembly is stopped between two quadrant points of an arc section of the unloading rotating synchronous belt wrapped on the unloading rotating reversing wheel and the closest to the motion trail of the clamping assembly; the two unloading rotation-positive motors simultaneously drive the two unloading rotation-positive driving synchronous wheels, the two unloading rotation-positive direction-changing change wheels and the two unloading rotation-positive synchronous belts to rotate, and when the two unloading rotation-positive direction-changing change wheels rotate in the counterclockwise direction, viewed from top to bottom, the two unloading rotation-positive direction-changing change wheels rotate in the counterclockwise direction, so that the two arc sections of the unloading rotation-positive synchronous belts wrapped on the unloading rotation-positive direction-changing change wheels rotate in the counterclockwise direction; the two unloading turning cylinders extend simultaneously to drive the two sets of unloading turning brackets, the unloading turning direction-changing wheels, the unloading turning driving synchronous wheels, the unloading turning motor, the unloading turning push plate and the unloading turning synchronous belt to move horizontally and oppositely; two unloading rotation synchronous belts are wound on a quadrant point of a circular arc section on the unloading rotation direction-changing wheel, which is closest to the motion trail of the clamping assembly, and simultaneously press the outer cylindrical surface of the friction wheel, and drives the friction wheel to rotate clockwise, the combination of the first half jacket, the second half jacket, the pressure spring of the half jacket and the friction wheel rotates, the discharging rotating cylinder is blocked to stop extending until 'the edge where the outer cylindrical surface of the friction wheel and the guide surface of the friction wheel are intersected' is attached to the discharging rotating synchronous belt, the operation is continued, the crossed edges of the outer cylindrical surface of the friction wheel and the guide surface of the friction wheel slide along the unloading rotation and forward pushing plane, the two unloading rotation and forward pushing cylinders continue to extend simultaneously until the unloading rotation and forward pushing plane and the guide surface of the friction wheel are completely attached together, the direction of the guide surface of the friction wheel is vertical to the left-right direction, and the directions of the first half-clamping sleeve vertical plane and the second half-clamping sleeve vertical plane are vertical to the left-right direction; the unloading rotation motor stops rotating;

two discharging tensioners in the pair of discharging tensioners are bilaterally symmetrical and are respectively positioned on the left side and the right side of the motion trail of the clamping component below the main chain; the two discharging tensioners are respectively positioned under the two discharging rotating assemblies; the discharging tensioner comprises a discharging tensioning cylinder and a discharging tensioning plate; the discharging tensioning cylinder comprises a discharging tensioning cylinder body and a discharging tensioning cylinder piston rod; the discharging tensioning cylinder body is fixedly connected with the frame; the discharging tensioning plate is fixedly connected with a discharging tensioning cylinder piston rod;

two unloading rotary cylinders contract simultaneously, so that two unloading rotary push planes leave the friction wheel guide surfaces on two sides simultaneously, two unloading tensioning cylinders contract simultaneously, two unloading tensioning plates simultaneously lean against and pull a first half sliding sleeve and a second half sliding sleeve towards two sides, the first half sliding sleeve and the second half sliding sleeve respectively translate along a clamping guide rod in a back-to-back mode, the first half sliding sleeve T-shaped tenon and the second half sliding sleeve T-shaped tenon are far away from each other, a first half clamping sleeve and a second half clamping sleeve are respectively dragged through the first half clamping sleeve T-shaped groove and the second half clamping sleeve T-shaped groove, the first half clamping sleeve and the second half clamping sleeve overcome the elastic pressure of a pressure spring of the first half clamping sleeve and are far away from each other along the guide rod of the half clamping sleeve, and a first half clamping.