CN110788362A

CN110788362A - Perforating device of link joint

Info

Publication number: CN110788362A
Application number: CN201911099765.4A
Authority: CN
Inventors: 吴承友; 屠伟
Original assignee: Friends Of Jiaxing Sheng Machinery Technology Co Ltd
Current assignee: Friends Of Jiaxing Sheng Machinery Technology Co Ltd
Priority date: 2019-11-12
Filing date: 2019-11-12
Publication date: 2020-02-14

Abstract

The invention provides a punching device for a chain plate, and belongs to the technical field of machinery. The punching device for the chain plate comprises a machine body, wherein a rotary table is arranged in the middle of the machine body, a driving motor and a cam divider which can drive the machine body to perform intermittent rotary motion are arranged between the machine body and the rotary table, a plurality of stations are arranged on an upper annular array of the rotary table, a clamp which can clamp the chain plate is fixed on each station, a centering mechanism which can center the chain plate, a drilling mechanism which punches the chain plate, an upper chamfering mechanism, a turnover mechanism which overturns the chain plate, a lower chamfering mechanism and a detection mechanism which detects whether holes exist in the chain plate are sequentially arranged above the stations. The invention integrates the procedures of punching, upper chamfering, lower chamfering, detection and the like required by processing the chain plate into one device, reduces the processing steps and improves the processing efficiency of the chain plate; meanwhile, the number of machines is reduced, and the production investment is reduced.

Description

Perforating device of link joint

Technical Field

The invention belongs to the technical field of machinery, relates to a punching device, and particularly relates to a punching device of a chain plate.

Background

In the existing production and processing equipment, the chain plate can be made of stainless steel or carbon steel and other materials, has various specifications and varieties, can be selected according to the requirements of conveying materials and processes, and can meet different requirements of various industries. The automatic conveying and distributing device is widely applied to assembly lines of food, medicines, beverages, cosmetics and the like, animal slaughter production lines, washing products, paper products, seasonings, dairy industry, tobacco and the like, and is used for automatic conveying and distributing and subsequent packaging line conveying. The chain plate has the characteristics of stable surface operation, difficult interference from other materials, heavy load, durability and the like.

The link joint is generally including being flat long banding body, and the one end of body has one and is flat circular shape connector, the middle part of connector seted up a non-circular port, a circular port has been seted up to the other end of body, the circular port in run through and the welding have the pin. In the use process of the chain plate, a hole is generally required to be drilled on the pin. However, in the production and processing process of the existing chain plate, the pin punching device is generally only used for punching the pin singly, the preorder centering process and the subsequent chamfering and detecting process need to be carried out on other processing equipment to continue processing, the processing process is extremely complex, the operation is quite inconvenient, and meanwhile, the processing efficiency of the chain plate is not high.

Therefore, for those skilled in the art, there is still a need to improve the punching device in the prior art, so that the processes of centering, punching, chamfering and detecting the chain plate are sequentially performed, the punching efficiency of the chain plate is finally improved, and the labor intensity of operators is reduced.

Disclosure of Invention

The invention aims to provide a punching device of a chain plate aiming at the problems in the prior art, and the technical problem to be solved by the invention is how to realize accurate punching and chamfering on a pin shaft of the chain plate.

The purpose of the invention can be realized by the following technical scheme: the utility model provides a perforating device of link joint, includes the organism, the middle part of organism is provided with a carousel, be equipped with between organism and the carousel and drive its driving motor and the cam wheel splitter who is intermittent rotary motion on the organism, its characterized in that: the upper annular array of the turntable is provided with a plurality of stations, each station is fixed with a clamp capable of clamping a chain plate, a centering mechanism capable of centering the chain plate, a drilling mechanism for drilling the chain plate, an upper chamfering mechanism for chamfering the upper part of a hole processed on the chain plate, a turnover mechanism for turning over the chain plate, a lower chamfering mechanism for chamfering the lower part of the hole processed on the chain plate and a detection mechanism for detecting whether a hole exists on the chain plate are sequentially arranged above the stations, the centering mechanism comprises a positioning cylinder and a positioning drill bit, the cylinder body of the positioning cylinder is fixed on a machine body outside the turntable through a first mounting frame, the piston rod of the positioning cylinder is horizontally arranged and faces the turntable, the end part of the piston rod of the positioning cylinder is fixed with a positioning block, and the positioning block is vertically provided with a centering hole, the positioning drill bit is fixed on the machine body outside the rotary table through the first mounting column, and a first sliding sleeve capable of driving the positioning drill bit to move up and down is arranged between the positioning drill bit and the first mounting column.

The punching device of the chain plate has the working principle that:

1. feeding: the chain plate is fed and fixed on the clamp, and after the feeding is finished, the rotary disc rotates under the action of the driving motor and the cam divider and enters the next station;

2. centering: after the feeding is finished, centering the pin on the chain plate by using a centering mechanism to determine the punching center on the chain plate so as to facilitate a drilling bit to accurately punch on the pin of the chain plate, and after the centering is finished, continuously rotating the turntable under the action of the driving motor and the cam divider to enter the next station;

3. punching: after centering is finished, accurately punching the pin on the chain plate by using a drilling mechanism, and continuously rotating the turntable under the action of the driving motor and the cam divider to enter the next station after punching is finished;

4. chamfering the upper end of the hole: after the punching is finished, the upper end face of the pin hole is a working face, the upper end of the pin hole in the chain plate is chamfered by using the upper chamfering mechanism, and after the chamfering is finished, the rotary disc continues to rotate under the action of the driving motor and the cam divider to enter the next station;

5. turning: after the chamfering of the upper end of the pin hole is finished, the chain plate is rotated by 180 degrees by using the turnover mechanism, so that the lower end surface of the pin hole faces upwards, and after the turnover is finished, the turntable continues to rotate under the action of the driving motor and the cam divider to enter the next station;

6. chamfering the lower end of the hole: after the turnover is finished, the lower end face of the pin hole becomes a working face, the lower end of the pin hole in the chain plate is chamfered by using the lower chamfering mechanism, and after the chamfering is finished, the turntable continues to rotate under the action of the driving motor and the cam divider to enter the next station;

7. and (3) detection: after the lower end of the pin hole is chamfered, whether the hole formed in the pin is penetrated is detected through a detection mechanism, and after the detection is finished, the turntable continues to rotate under the action of the driving motor and the cam divider to enter the next station;

8. blanking: and (5) blanking the chain plate, and circularly processing in the way.

In the above punching device for a chain plate, the clamp includes a base block having a mounting groove for placing the chain plate, an opening of the mounting groove faces upward, a clamping cylinder is fixed on the base block, and a piston rod of the clamping cylinder is horizontally arranged and can extend into the mounting groove.

In the punching device of the chain plate, the drilling mechanism comprises a drilling drill bit, the drilling drill bit is fixed on the machine body outside the rotary table through a second mounting column, a second sliding sleeve capable of driving the drilling drill bit to move up and down is arranged between the drilling drill bit and the second mounting column, and the second mounting column is located on one side of the first mounting column.

In the punching device of the chain plate, the upper chamfering mechanism comprises an upper chamfering drill bit, the upper chamfering drill bit is fixed on a machine body on the outer side of the rotary table through a third mounting column, a third sliding sleeve capable of driving the upper chamfering drill bit to move up and down is arranged between the upper chamfering drill bit and the third mounting column, and the third mounting column is located on one side, far away from the first mounting column, of the second mounting column.

In the punching device for the chain plate, the turnover mechanism comprises a turnover cylinder, a second mounting frame is fixed on the outer side of the turntable on the machine body, the cylinder body of the turnover cylinder is fixed on the second mounting frame, the piston rod of the turnover cylinder is horizontally arranged and faces the turntable, and the end part of the piston rod of the turnover cylinder is fixed with a clamping arm capable of clamping the chain plate.

In the perforating device of foretell link joint, lower chamfer mechanism include lower chamfer drill bit, lower chamfer drill bit fix on the organism in the carousel outside through erection column four, be provided with between lower chamfer drill bit and the erection column four and can drive down the slip cap four of chamfer drill bit up-and-down motion, the erection column four be located erection column three and keep away from one side of erection column two.

In the perforating device of foretell link joint, detection mechanism include the lift cylinder, the organism on be located the outside of carousel and be fixed with mounting bracket three, the cylinder body of lift cylinder passes through the mounting panel to be fixed on mounting bracket three, the vertical setting of piston rod of lift cylinder and towards above-mentioned carousel, the tailpiece of the piston rod portion of lift cylinder is fixed with the detection pole, the lower extreme of link joint can be inserted to the lower extreme of detection pole.

In the punching device for the chain plate, the number of the work stations is eight, and the included angle between every two adjacent work stations is 45 degrees.

In the punching device for the chain plate, a feeding table is arranged on one side of the machine body, a conveying guide rail is fixed on the feeding table through a support, and a manipulator capable of clamping the chain plate and placing the chain plate into an appointed station or taking the chain plate down from the appointed station is arranged on the conveying guide rail.

In the punching device for the chain plate, a material collecting box capable of collecting the processed chain plate is arranged below the conveying guide rail.

Compared with the prior art, the invention has the following advantages:

1. the invention adopts the centering procedure before the hole of the pin on the chain plate is processed, thereby leading the processing precision of the hole to be higher.

2. The detection process is adopted after the holes of the pins on the chain plate are processed, so that the holes are processed more accurately without omission.

3. The chain plate processing device integrates the centering, the punching, the upper chamfering, the lower chamfering and the detection which are required by the chain plate processing into one device, and the chain plate does not need to be conveyed into various different machines when in use, so that the time and the labor force which are frequently transferred during the processing are reduced, and the processing efficiency of the chain plate is improved; meanwhile, the number of required machines is reduced, and the production investment is reduced.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is a schematic view of the structure of the jig of the present invention;

FIG. 4 is a schematic view of a portion of the centering mechanism of the present invention;

FIG. 5 is a schematic view of the turnover mechanism of the present invention;

FIG. 6 is a schematic view of the structure of the detecting mechanism of the present invention.

In the figure, 1, a machine body; 2. a turntable; 3. a clamp; 3a, a base block; 3b, clamping a cylinder; 4. a first mounting frame; 5. positioning the air cylinder; 6. positioning blocks; 7. mounting a first column; 8. a first sliding sleeve; 9. positioning the drill bit; 10. mounting a second column; 11. a second sliding sleeve; 12. a drill bit for drilling; 13. mounting a third column; 14. a third sliding sleeve; 15. an upper chamfering drill bit; 16. a second mounting frame; 17. turning over the air cylinder; 18. a clamp arm; 19. mounting a column IV; 20. a fourth sliding sleeve; 21. a lower chamfering bit; 22. mounting frame III; 23. mounting a plate; 24. a lifting cylinder; 25. a detection lever; 26. a feeding table; 27. a support; 28. a conveying guide rail; 29. a manipulator; 30. a material receiving box; 31. the chain plate.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

In the invention, the driving motor, the cam divider, the clamping cylinder 3b, the positioning cylinder 5, the positioning drill bit 9, the drilling drill bit 12, the upper chamfering drill bit 15, the overturning cylinder 17, the lower chamfering drill bit 21, the lifting cylinder 24 and the manipulator 29 are all existing products which can be bought in the market; the up-and-down movement of the first sliding sleeve 8 on the first mounting column 7, the up-and-down movement of the second sliding sleeve 11 on the second mounting column 10, the up-and-down movement of the third sliding sleeve 14 on the third mounting column 13 and the up-and-down movement of the fourth sliding sleeve 20 on the fourth mounting column 19 are driven by servo motors and are the prior art; the positioning drill bit 9, the drilling drill bit 12, the upper chamfering drill bit 15 and the lower chamfering drill bit 21 are all driven by a main shaft to rotate, and are all in the prior art.

As shown in fig. 1 to 6, a punching device for a chain plate 31 comprises a machine body 1, a rotary plate 2 is arranged in the middle of the machine body 1, a driving motor and a cam divider which can drive the machine body 1 to perform intermittent rotary motion are arranged between the machine body 1 and the rotary plate 2, and the driving motor and the cam divider can enable the rotary plate 2 to perform intermittent motion by rotating the rotary plate at an included angle of 45 degrees every time. The upper annular array of carousel 2 is equipped with eight stations, all is fixed with the anchor clamps 3 that can clip link joint 31 on every station, and the centering mechanism that can center link joint 31, the drilling mechanism that punches to link joint 31, the last chamfer mechanism that carries out the chamfer to the hole top of processing out on link joint 31, the tilting mechanism that overturns link joint 31, the lower chamfer mechanism that carries out the chamfer to the hole below of processing out on link joint 31 and the detection mechanism that whether there is the hole to detect on link joint 31 have been set gradually to the top of eight stations.

Specifically, the number of the stations is eight, and the included angle between two adjacent stations is 45 degrees. The clamp 3 comprises a base block 3a with a mounting groove for placing the chain plate 31, the opening of the mounting groove faces upwards, a clamping cylinder 3b is fixed on the base block 3a, and a piston rod of the clamping cylinder 3b is horizontally arranged and can extend into the mounting groove. The chain plate 31 is firstly placed in the mounting groove of the base block 3a, and then the clamping cylinder 3b is utilized to prop the chain plate 31 in the mounting groove of the base block 3a, so that the fixing of the chain plate 31 in the clamp 3 can be realized.

More specifically, a feeding table 26 is arranged on one side of the machine body 1, a conveying guide rail 28 is fixed on the feeding table 26 through a bracket 27, and a manipulator 29 capable of clamping a chain plate 31 and placing the chain plate 31 into a specified station or taking the chain plate 31 off from the specified station is arranged on the conveying guide rail 28; a receiving box 30 capable of collecting the processed chain plates 31 is arranged below the conveying guide rail 28. When the chain plates 31 are to be processed, the robot arm 29 can be used to sequentially place the chain plates 31 into the clamp 3 from the outside; meanwhile, when the link plates 31 are to be processed, the link plates 31 may be sequentially removed and sequentially placed in the hopper 30 by the robot 29.

As shown in fig. 1, 2, 3 and 4, the centering mechanism includes a positioning cylinder 5 and a positioning drill bit 9, a cylinder body of the positioning cylinder 5 is fixed on the machine body 1 outside the turntable 2 through a mounting bracket one 4, a piston rod of the positioning cylinder 5 is horizontally arranged and faces the turntable 2, a positioning block 6 is fixed at an end of the piston rod of the positioning cylinder 5, and a centering hole is vertically formed in the positioning block 6; the positioning drill bit 9 is fixed on the machine body 1 on the outer side of the rotary table 2 through a first mounting column 7, and a first sliding sleeve 8 capable of driving the positioning drill bit 9 to move up and down is arranged between the positioning drill bit 9 and the first mounting column 7. Firstly, a positioning block 6 is pushed to the upper side of a pin through a positioning cylinder 5 on a mounting frame I4, when one side of the positioning block 6 is abutted to a plate body of a chain plate 31, namely the positioning block 6 moves to a pointing position, then the height of a positioning drill bit 9 is adjusted through a sliding sleeve I8 on a mounting column I7, the positioning drill bit 9 is driven to move downwards and rotate by a main shaft and a servo motor on the positioning drill bit 9 until a small taper hole of 45 degrees is pre-drilled on the pin of the chain plate 31, so that the drilling drill bit 12 can accurately drill on the pin of the chain plate 31, and then centering can be completed.

The drilling mechanism includes drilling bit 12, and drilling bit 12 passes through two 10 of erection column to be fixed on the organism 1 in the carousel 2 outside, is provided with two 11 of sliding sleeve that can drive drilling bit 12 up-and-down motion between drilling bit 12 and the erection column two 10, the erection column two 10 be located one side of erection column 7. The height of the drilling bit 12 is adjusted through the sliding sleeve II 11 on the mounting column II 10, the drilling bit 12 is driven to move downwards and rotate by the main shaft and the servo motor on the drilling bit 12 until the pin on the chain plate 31 is punched to form a pin hole, and then the drilling can be finished.

Go up the chamfer mechanism and include last chamfer drill bit 15, go up chamfer drill bit 15 and fix on the organism 1 in the carousel 2 outside through three 13 of erection column, go up and be provided with the slip cap three 14 that can drive upper chamfer drill bit 15 up-and-down motion between chamfer drill bit 15 and the three 13 of erection column, the three 13 of erection column be in two 10 one sides of keeping away from erection column 7 of erection column. The height of the upper chamfering drill bit 15 is adjusted through the sliding sleeve III 14 on the mounting column III 13, the upper chamfering drill bit 15 is driven to move downwards and rotate by the main shaft and the servo motor on the upper chamfering drill bit 15 until the upper end of the pin hole on the chain plate 31 is chamfered, and chamfering can be finished.

As shown in fig. 1, 2, 3 and 5, the turnover mechanism includes a turnover cylinder 17, a second mounting frame 16 is fixed on the machine body 1 at the outer side of the turntable 2, a cylinder body of the turnover cylinder 17 is fixed on the second mounting frame 16, a piston rod of the turnover cylinder 17 is horizontally arranged and faces the turntable 2, and a clamping arm 18 capable of clamping the chain plate 31 is fixed at the end of the piston rod of the turnover cylinder 17. The link plate 31 is rotated 180 degrees by using the turnover cylinder 17 and the clamping arm 18 on the second mounting frame 16, so that the lower end of the pin hole faces upwards, and then turnover can be completed.

Lower chamfer mechanism includes lower chamfer drill bit 21, lower chamfer drill bit 21 fix on the organism 1 in the carousel 2 outside through erection column four 19, be provided with between lower chamfer drill bit 21 and the erection column four 19 and drive down the slip cap four 20 of chamfer drill bit 21 up-and-down motion down, the erection column four 19 be in one side that erection column two 10 were kept away from to erection column three 13. The height of the lower chamfering drill bit 21 is adjusted through the sliding sleeve four 20 on the mounting column four 19, the lower chamfering drill bit 21 is driven to move downwards and rotate by a main shaft and a servo motor on the lower chamfering drill bit 21 until the lower end of the pin hole on the chain plate 31 is chamfered, and chamfering can be finished.

As shown in fig. 1, 2, 3 and 6, the detecting mechanism includes a lifting cylinder 24, a third mounting frame 22 is fixed on the machine body 1 outside the turntable 2, a cylinder body of the lifting cylinder 24 is fixed on the third mounting frame 22 through a mounting plate 23, a piston rod of the lifting cylinder 24 is vertically arranged and faces the turntable 2, a detecting rod 25 is fixed on an end portion of the piston rod of the lifting cylinder 24, and a lower end of the detecting rod 25 can be inserted into a lower end of the chain plate 31. The detection rod 25 is moved up and down by the lifting cylinder 24, if the detection rod 25 can move down to a designated position, the hole is punched, otherwise, the hole is not punched, and the detection can be completed.

The punching device of the chain plate 31 has the working principle that:

1. feeding: the chain plate 31 to be processed is fed through the manipulator 29 on the bracket 27 of the feeding table 26, the clamping cylinder 3b is utilized to clamp the chain plate 31 on the clamp 3, the chain plate 31 is fed at the first station of the rotary table 2, and after the feeding is finished, the rotary table 2 rotates 45 degrees under the action of the driving motor and the cam divider and enters the next station;

2. centering: after the feeding is finished, firstly, a positioning block 6 is pushed to the position above a pin through a positioning cylinder 5 on a mounting frame I4, when one side of the positioning block 6 is abutted to a plate body of a chain plate 31, namely the positioning block 6 moves to a pointing position, then the height of a positioning drill bit 9 is adjusted through a sliding sleeve I8 on a mounting column I7, the positioning drill bit 9 is driven to move downwards and rotate by a main shaft and a servo motor on the positioning drill bit 9 until a small conical hole of 45 degrees is pre-drilled on the pin of the chain plate 31, so that the drilling drill bit 12 can accurately drill on the pin of the chain plate 31, and after the centering is finished, a rotary disc 2 continues to rotate by 45 degrees under the action of a driving motor and a cam divider and enters a next station;

3. punching: when centering is finished, the height of the drilling bit 12 is adjusted through the sliding sleeve II 11 on the mounting column II 10, the drilling bit 12 is driven to move downwards and rotate by the aid of a main shaft and a servo motor on the drilling bit 12 until a pin on the chain plate 31 is punched to form a pin hole, and after punching is finished, the rotary table 2 continues to rotate 45 degrees under the action of a driving motor and a cam divider to enter the next station;

4. chamfering the upper end of the hole: after the hole is punched, the upper end face of the pin hole is a working face, the height of an upper chamfering drill bit 15 is adjusted through a sliding sleeve III 14 on a mounting column III 13, the upper chamfering drill bit 15 is driven to move downwards and rotate by a main shaft and a servo motor on the upper chamfering drill bit 15 until the upper end of the pin hole on a chain plate 31 is chamfered, and after the chamfering is finished, a rotary table 2 continues to rotate 45 degrees under the action of a driving motor and a cam divider and enters the next station;

5. turning: after chamfering of the upper end of the pin hole is finished, the chain plate 31 is rotated by 180 degrees by using the overturning cylinder 17 and the clamping arm 18 on the second mounting frame 16, so that the lower end face of the pin hole faces upwards, and after overturning is finished, the rotary disc 2 continues to rotate by 45 degrees under the action of the driving motor and the cam divider and enters the next station;

6. chamfering the lower end of the hole: after the turning is finished, the lower end face of the pin hole is a working face, the height of the lower chamfering drill bit 21 is adjusted through the sliding sleeve IV 20 on the mounting column IV 19, the lower chamfering drill bit 21 is driven to move downwards and rotate by using a main shaft and a servo motor on the lower chamfering drill bit 21 until the lower end of the pin hole on the chain plate 31 is chamfered, and after the chamfering is finished, the rotary table 2 continues to rotate for 45 degrees under the action of a driving motor and a cam divider and enters the next station;

7. and (3) detection: after the lower end of the pin hole is chamfered, whether the hole formed in the pin is punched or not is detected through the lifting cylinder 24 and the detection rod 25 on the mounting frame III 22, specifically, the detection rod 25 is moved up and down by the lifting cylinder 24, if the detection rod 25 can move down to a specified position, the hole is punched, otherwise, the hole is not punched, and after the detection is finished, the rotary table 2 continues to rotate 45 degrees under the action of the driving motor and the cam divider to enter the next station;

8. blanking: and (3) blanking the processed chain plate 31 by the manipulator 29, and collecting by using the material collecting box 30 to realize blanking of the chain plate 31, thus circularly processing.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Although 1, body is used more herein; 2. a turntable; 3. a clamp; 3a, a base block; 3b, clamping a cylinder; 4. a first mounting frame; 5. positioning the air cylinder; 6. positioning blocks; 7. mounting a first column; 8. a first sliding sleeve; 9. positioning the drill bit; 10. mounting a second column; 11. a second sliding sleeve; 12. a drill bit for drilling; 13. mounting a third column; 14. a third sliding sleeve; 15. an upper chamfering drill bit; 16. a second mounting frame; 17. turning over the air cylinder; 18. a clamp arm; 19. mounting a column IV; 20. a fourth sliding sleeve; 21. a lower chamfering bit; 22. mounting frame III; 23. mounting a plate; 24. a lifting cylinder; 25. a detection lever; 26. a feeding table; 27. a support; 28. a conveying guide rail; 29. a manipulator; 30. a material receiving box; 31. link plates, etc., but does not exclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims

1. The utility model provides a perforating device of link joint, includes the organism, the middle part of organism is provided with a carousel, be equipped with between organism and the carousel and drive its driving motor and the cam wheel splitter who is intermittent rotary motion on the organism, its characterized in that: the upper annular array of the turntable is provided with a plurality of stations, each station is fixed with a clamp capable of clamping a chain plate, a centering mechanism capable of centering the chain plate, a drilling mechanism for drilling the chain plate, an upper chamfering mechanism for chamfering the upper part of a hole processed on the chain plate, a turnover mechanism for turning over the chain plate, a lower chamfering mechanism for chamfering the lower part of the hole processed on the chain plate and a detection mechanism for detecting whether a hole exists on the chain plate are sequentially arranged above the stations, the centering mechanism comprises a positioning cylinder and a positioning drill bit, the cylinder body of the positioning cylinder is fixed on a machine body outside the turntable through a first mounting frame, the piston rod of the positioning cylinder is horizontally arranged and faces the turntable, the end part of the piston rod of the positioning cylinder is fixed with a positioning block, and the positioning block is vertically provided with a centering hole, the positioning drill bit is fixed on the machine body outside the rotary table through the first mounting column, and a first sliding sleeve capable of driving the positioning drill bit to move up and down is arranged between the positioning drill bit and the first mounting column.

2. The punching device of a link plate according to claim 1, wherein the jig comprises a base block having a mounting groove for receiving the link plate, the mounting groove having an opening facing upward, a clamping cylinder being fixed to the base block, and a piston rod of the clamping cylinder being horizontally disposed and capable of extending into the mounting groove.

3. The punching device for the chain plate as claimed in claim 2, wherein the drilling mechanism comprises a drilling bit fixed on the machine body outside the rotary table through a second mounting post, and a second sliding sleeve capable of driving the drilling bit to move up and down is arranged between the drilling bit and the second mounting post.

4. The punching device for the chain plate as claimed in claim 2, wherein the upper chamfering mechanism comprises an upper chamfering bit fixed on the machine body outside the rotary table through a third mounting column, and a third sliding sleeve capable of driving the upper chamfering bit to move up and down is arranged between the upper chamfering bit and the third mounting column.

5. The punching device for the chain plate as claimed in claim 2, wherein the turnover mechanism comprises a turnover cylinder, a second mounting frame is fixed on the machine body and positioned on the outer side of the rotary plate, a cylinder body of the turnover cylinder is fixed on the second mounting frame, a piston rod of the turnover cylinder is horizontally arranged and faces the rotary plate, and a clamping arm capable of clamping the chain plate is fixed at the end part of the piston rod of the turnover cylinder.

6. The punching device for the chain plate as claimed in claim 2, wherein the lower chamfering mechanism comprises a lower chamfering bit fixed on the machine body outside the rotary table through a fourth mounting column, and a fourth sliding sleeve capable of driving the lower chamfering bit to move up and down is arranged between the lower chamfering bit and the fourth mounting column.

7. The punching device for the chain plate as claimed in claim 2, wherein the detection mechanism comprises a lifting cylinder, a third mounting frame is fixed on the machine body at the outer side of the rotary plate, a cylinder body of the lifting cylinder is fixed on the third mounting frame through a mounting plate, a piston rod of the lifting cylinder is vertically arranged and faces the rotary plate, a detection rod is fixed at the end part of the piston rod of the lifting cylinder, and the lower end of the detection rod can be inserted into the lower end of the chain plate.

8. A punching device of a link plate according to any one of claims 1 to 7, characterized in that the number of said stations is eight, and the included angle between two adjacent stations is 45 °.

9. The punching device for the chain plate according to any one of claims 1 to 7, wherein a feeding table is arranged on one side of the machine body, a conveying guide rail is fixed on the feeding table through a bracket, and a manipulator capable of clamping the chain plate and placing the chain plate into or taking the chain plate out of a designated station is arranged on the conveying guide rail.

10. A punching device of a link plate according to any one of claims 1 to 7, characterized in that a receiving box capable of collecting the processed link plate is provided below the conveying guide rail.