CN109278454B

CN109278454B - Can carry out interconnection can carry out glyptic intelligent engraving device in multi-angle

Info

Publication number: CN109278454B
Application number: CN201811268663.6A
Authority: CN
Inventors: 黎三妹
Original assignee: Jiangsu Yuanyi Langshi Decoration Engineering Co Ltd
Current assignee: Jiangsu Yuancheng Intelligent Technology Co., Ltd
Priority date: 2018-10-29
Filing date: 2018-10-29
Publication date: 2020-04-07
Anticipated expiration: 2038-10-29
Also published as: CN109278454A

Abstract

The invention discloses intelligent engraving equipment capable of being interconnected and engraving at multiple angles, and relates to the technical field of intelligent engraving equipment. This kind of can carry out interconnection can carry out glyptic intelligent engraving device by multi-angle, through the setting of base, the convenience removes whole device, for fixed weld between branch and the base, can improve the stability of device, avoid overall structure unstability to appear, be provided with the net twine mouth simultaneously, can pass through the net twine mouth and then network equipment, threaded connection between nut and the screw rod can accomplish the removal to the clamp plate, makes the clamp plate move down, improves the functional of clamp plate self.

Description

Can carry out interconnection can carry out glyptic intelligent engraving device in multi-angle

Technical Field

The invention relates to the technical field of intelligent engraving equipment, in particular to intelligent engraving equipment which can be interconnected and can perform engraving at multiple angles.

Background

The intelligent engraving equipment generally refers to engraving devices for engraving materials such as stone, wood and the like, and the engraving devices are the continuously-developed results of the engraving equipment from traditional manual engraving to current mechanical engraving with higher utilization rate and then current intelligent engraving, and the appearance of the intelligent engraving equipment enables the engraving industry to have a new technical trend.

Along with present people's standard of living constantly improves, people are more and more strict to the requirement of the material on the market, and especially stone material and timber all are the material that uses comparatively frequently, just including engraving technique among the processing technology to this series of materials, present engraver can carve according to the template of former state, but the deviation appears on the style easily, and the precision is not enough, in addition, can not carry out the sculpture of multi-angle, causes the exquisite degree to receive the influence.

The intelligence carpenter engraver that discloses in chinese utility model patent application publication CN205997630U, this kind of engraver, though can be more steady carry out work, work efficiency is higher, has the dust absorption function simultaneously, but this engraver has the flexibility ratio not enough, can not carry out the shortcoming of the sculpture work of multi-angle.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the intelligent engraving equipment which can be interconnected and can engrave at multiple angles, and solves the problems that the existing engraving equipment proposed in the background technology can engrave according to the original template, but is easy to have deviation on the style, has insufficient accuracy, and can not engrave at multiple angles, so that the delicacy is influenced.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a can carry out interconnection and can carry out glyptic intelligent sculpture equipment by multi-angle, includes base and bottom plate, both sides all are fixed with branch about the top of base, and the inboard of branch is provided with vertical slide rail, be fixed welding between branch and the base, the outside of vertical slide rail is provided with the net twine mouth, the bottom of bottom plate is connected with the second spring, and the bottom plate is located the middle bottom in top of base.

Optionally, the mounting panel is settled to the surperficial top of vertical slide rail, and the top left and right sides of mounting panel all is fixed with the screw rod, the clamp plate is installed in the outside of screw rod, and installs the nut in the top outside of clamp plate, nut and clamp plate all are connected for the gomphosis between with the screw rod, the bottom of clamp plate is connected with the ejector pin, be threaded connection between nut and the screw rod, and all be symmetrical about the vertical center line of clamp plate between the nut and the screw rod.

Optionally, the bottom internally mounted of mounting panel has mechanical pole, and the centre of mechanical pole is provided with first pivot, be the gomphosis between mechanical pole and the mounting panel and be connected, the inboard of mechanical pole is connected with first spring, and the bottom of mechanical pole settles and have first drill bit, be the gomphosis between first drill bit and the mechanical pole and be connected, mutually support between mechanical pole and the first pivot and constitute revolution mechanic, and be threaded connection between first drill bit and the mechanical pole.

Optionally, the left side and the right side of the top of the bottom plate are both fixed with fixing rods, a workbench is placed above the fixing rods, the fixing rods are connected with the bottom plate in an embedded mode, the workbench is connected with the fixing rods in an embedded mode, the bottom plate is perpendicular to the second spring, and the second spring is evenly arranged in the horizontal direction of the bottom plate.

Optionally, a positioning rod is arranged above the workbench, a movable plate is arranged at the bottom of the positioning rod, the positioning rod and the supporting rod are fixedly welded, a bolt is arranged between the movable plate and the positioning rod, side plates are arranged on the left side and the right side of the workbench, and a second rotating shaft is arranged on the surface of each side plate.

Optionally, the fixed plate is fixed on the surface of the workbench, a sliding groove is formed in the surface of the fixed plate, the fixed plate and the workbench are welded, the placing plate is placed on the inner side of the fixed plate, an elastic rope is connected between the placing plate and the fixed plate, the fixed plate is connected with the placing plate through the elastic rope, and the fixed plate is symmetrical about the horizontal center line of the workbench.

Optionally, movable laths are placed on the surface of the sliding groove, vertical rods are arranged on the surface of each movable lath, the vertical rods and the movable laths are welded, clamping blocks are arranged on the outer sides of the vertical rods, the clamping blocks are in threaded connection with the vertical rods, and the clamping blocks and the vertical rods are symmetrical about the vertical central line of the movable laths.

Optionally, a third rotating shaft is installed inside the placing plate, an engraving plate is placed on the surface of the placing plate, the engraving plate and the placing plate are connected in an embedded mode, the placing plate and the third rotating shaft are matched with each other to form a rotating structure, and the third rotating shaft penetrates through the placing plate horizontally.

Optionally, a grinding wheel is installed on the outer side of the first drill bit, an engraving cutter is arranged at the bottom of the first drill bit, the engraving cutter and the first drill bit are connected in an embedded mode, dust suction ports are formed in the left side and the right side of the engraving cutter, a dust exhaust pipe is connected above the dust suction ports, the inner side face of the grinding wheel is tightly attached to the outer side face of the first drill bit, and the grinding wheel is matched with the first drill bit in size.

Optionally, the inner side of the second rotating shaft is connected with a connecting rod, a movable rod is arranged on the inner side of the connecting rod, a rotating rod is installed between the movable rod and the connecting rod, a movable shaft is arranged in the middle of the movable rod, and a second drill bit is installed at one end, far away from the connecting rod, of the movable rod.

The invention provides an intelligent engraving device capable of being interconnected and engraving at multiple angles, which has the following beneficial effects:

1. this kind can carry out interconnection can the multi-angle carry out glyptic intelligent engraving device, setting through the base, the convenience removes whole device, be fixed weld between branch and the base, can improve the stability of device, avoid overall structure unstability to appear, be provided with the net twine mouth simultaneously, can pass through the net twine mouth and then network equipment, threaded connection between nut and the screw rod, can accomplish the removal to the clamp plate, make the clamp plate move down, improve the functionality of clamp plate self, the clamp plate can drive the mounting panel and move down, conveniently adjust the high position of mounting panel, can cooperate the mounting panel to remove between mounting panel and the vertical slide rail, the flexibility of equipment has been improved greatly.

2. This kind can carry out interconnection can carry out glyptic intelligent engraving device by multi-angle, through setting up mechanical lever, can be more convenient install first drill bit, mutually support between mechanical lever and the first pivot and constitute slewing mechanism, be favorable to adjusting the sculpture angle of first drill bit, make the angle of first drill bit more nimble, the setting of first spring is to avoid first drill bit can produce vibrations at the during operation, so can reduce vibrations, stability is improved.

3. This kind can carry out interconnection can carry out glyptic intelligent engraving device by the multi-angle, setting through the second spring, can carry out the shock attenuation to the bottom plate, avoid the bottom plate unstable, cause the sculpture work deviation, reduce the precision, mutual gomphosis between workstation and the dead lever, so conveniently install and dismantle with the workstation, the inspection of being convenient for, the curb plate passes through second pivot and connecting rod interconnect, the connecting rod passes through interconnect between bull stick and the movable rod, mutually support between movable rod and the bull stick and constitute slewing mechanism, so, be favorable to adjusting the angle of second drill bit, the second drill bit can be carved from the side simultaneously, improve equipment's practicality greatly.

4. This kind of can carry out interconnection can carry out glyptic intelligent engraving device by multi-angle, setting through the activity lath, mutually support between activity lath and the spout and constitute slide mechanism, so can adjust the distance between the activity lath, the setting of stretch cord, can increase the elasticity of placing the board, so more stable when carving, the inside of placing the board sets up the third pivot, the third pivot with place mutually support between the board and constitute slewing mechanism, can overturn placing the board, the back that conveniently is located the carving board on placing the board is carved.

5. This kind of can carry out interconnection can the multi-angle carry out glyptic intelligent engraving device, through the setting of dull polish wheel, the dull polish wheel can carry out the polishing of table wall when first drill bit carries out the sculpture, and the external shape of carving tool is the diamond type, and the temper of carving tool is so better, is difficult for being worn and torn, and life is longer, in addition, mutually supports between dust absorption mouth and the dust exhaust pipe, can help carrying out the chip removal, makes things convenient for the cleaning work in later stage.

Drawings

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

FIG. 2 is a schematic view of a worktable according to the present invention;

FIG. 3 is a schematic side view of the worktable according to the present invention;

FIG. 4 is a schematic view of the structure of the engraving plate of the present invention;

FIG. 5 is a schematic view of a first embodiment of the present invention;

FIG. 6 is an enlarged view of the structure at A in FIG. 1 according to the present invention.

In the figure: 1. a base; 2. a strut; 3. a vertical slide rail; 4. a network cable port; 5. mounting a plate; 6. a screw; 7. pressing a plate; 8. a nut; 9. a top rod; 10. a mechanical lever; 11. a first rotating shaft; 12. a first spring; 13. a first drill bit; 14. a base plate; 15. a second spring; 16. fixing the rod; 17. a work table; 18. positioning a rod; 19. moving the plate; 20. a bolt; 21. a side plate; 22. a second rotating shaft; 23. a fixing plate; 24. a chute; 25. placing the plate; 26. an elastic cord; 27. a movable slat; 28. a vertical rod; 29. a clamping block; 30. a third rotating shaft; 31. engraving a plate; 32. grinding a grinding wheel; 33. a graver; 34. a dust suction port; 35. a dust exhaust pipe; 36. a connecting rod; 37. a movable rod; 38. a rotating rod; 39. a movable shaft; 40. a second drill bit.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 6, the present invention provides a technical solution: an intelligent engraving device capable of being interconnected and engraving at multiple angles comprises a base 1 and a bottom plate 14, wherein supporting rods 2 are fixed on the left side and the right side of the upper portion of the base 1, vertical slide rails 3 are arranged on the inner sides of the supporting rods 2, an installation plate 5 is arranged above the surface of each vertical slide rail 3, screw rods 6 are fixed on the left side and the right side of the upper portion of the installation plate 5, pressing plates 7 are installed on the outer sides of the screw rods 6, screw caps 8 are installed on the outer sides of the upper portions of the pressing plates 7, the screw caps 8 and the pressing plates 7 are connected with the screw rods 6 in an embedded mode, ejector rods 9 are connected to the bottoms of the pressing plates 7, the screw caps 8 are in threaded connection with the screw rods 6, the screw caps 8 are symmetrical to the screw rods 6 relative to the vertical central line of the pressing plates 7, the screw caps 8 are in threaded connection with the screw rods 6, a mechanical rod 10 is installed inside the bottom of the mounting plate 5, a first rotating shaft 11 is arranged in the middle of the mechanical rod 10, the mechanical rod 10 is connected with the mounting plate 5 in a embedding manner, a first spring 12 is connected to the inner side of the mechanical rod 10, a first drill bit 13 is arranged at the bottom of the mechanical rod 10, the first drill bit 13 is connected with the mechanical rod 10 in a embedding manner, the mechanical rod 10 and the first rotating shaft 11 are matched with each other to form a rotating structure, the first drill bit 13 is connected with the mechanical rod 10 in a threaded manner, the angle of the mechanical rod 10 is adjusted by utilizing the rotating relationship between the mechanical rod 10 and the first rotating shaft 11, the first spring 12 is stretched when the angle is increased, otherwise, the first spring 12 is compressed, the support rod 2 is fixedly welded with the base 1, and a network cable port 4 is arranged on the outer side of the vertical slide rail 3;

the bottom of the bottom plate 14 is connected with a second spring 15, the bottom plate 14 is positioned at the middle bottom above the base 1, the left side and the right side above the bottom plate 14 are both fixed with a fixed rod 16, a workbench 17 is placed above the fixed rod 16, the fixed rod 16 is connected with the bottom plate 14 in an embedded manner, the workbench 17 is connected with the fixed rod 16 in an embedded manner, the bottom plate 14 is vertical to the second spring 15, the second springs 15 are uniformly arranged along the horizontal direction of the bottom plate 14, the bottom plate 14 can be damped by the arrangement of the second springs 15, the situation that the bottom plate 14 is unstable to avoid deviation of engraved works and reduce the accuracy is avoided, the workbench 17 is embedded with the fixed rod 16, so that the installation and the disassembly with the workbench 17 are convenient, the inspection is convenient, the positioning rod 18 is arranged above the movable plate 17, the bottom of the positioning rod 18 is provided with a 19, and the positioning rod 18 is fixedly welded with, a bolt 20 is arranged between the moving plate 19 and the positioning rod 18, side plates 21 are arranged on the left side and the right side of the workbench 17, a second rotating shaft 22 is arranged on the surfaces of the side plates 21, the positioning rod 18 is connected with the moving plate 19 through the bolt 20, the flexibility of the moving plate 19 is greatly improved, a fixed plate 23 is fixed on the surface of the workbench 17, and a sliding groove 24 is arranged on the surface of the fixed plate 23;

the fixed plate 23 and the workbench 17 are welded, the placing plate 25 is placed on the inner side of the fixed plate 23, an elastic rope 26 is connected between the placing plate 25 and the fixed plate 23, the fixed rod 16 is connected with the placing plate 25 through the elastic rope 26, the fixed plate 23 is symmetrical about the horizontal center line of the workbench 17, the elastic rope 26 is arranged to increase the elastic force of the placing plate 25, so that the carving is more stable, the movable lath 27 is placed on the surface of the sliding chute 24, the vertical rod 28 is arranged on the surface of the movable lath 27, the vertical rod 28 is welded with the movable lath 27, the fixture block 29 is arranged on the outer side of the vertical rod 28, the fixture block 29 is in threaded connection with the vertical rod 28, the fixture block 29 and the vertical rod 28 are symmetrical about the vertical center line of the movable lath 27, the fixture block 29 is connected with the vertical rod 28 through the threads, the fixture block 29 is rotated, the carving template is fixed on the movable lath 27 by the fixture block 29, the third rotating shaft 30 is installed inside the placing plate 25, the carving plate 31 is placed on the surface of the placing plate 25, the carving plate 31 is connected with the placing plate 25 in an embedded manner, the placing plate 25 and the third rotating shaft 30 are matched with each other to form a rotating structure, the third rotating shaft 30 horizontally penetrates through the placing plate 25, and the third rotating shaft 30 and the placing plate 25 are matched with each other to form a rotating mechanism, so that the placing plate 25 can be turned over, and the back of the carving plate 31 on the placing plate 25 can be conveniently carved;

the outer side of the first drill 13 is provided with a grinding wheel 32, the bottom of the first drill 13 is provided with a carving knife 33, the carving knife 33 is connected with the first drill 13 in a embedding manner, the left side and the right side of the carving knife 33 are both provided with dust suction ports 34, a dust exhaust pipe 35 is connected above the dust suction ports 34, the inner side surface of the grinding wheel 32 is tightly attached to the outer side surface of the first drill 13, the grinding wheel 32 is matched with the first drill 13 in size, the grinding wheel 32 can grind the surface wall while the first drill 13 is carving, the outer shape of the carving knife 33 is diamond-shaped, so that the carving knife 33 is better in toughness and is not easy to be worn, the inner side of the second rotating shaft 22 is connected with a connecting rod 36, the inner side of the connecting rod 36 is provided with a movable rod 37, a rotating rod 38 is arranged between the movable rod 37 and the connecting rod 36, a movable shaft 39 is arranged in the middle of the movable rod, and the second drill 40 is installed at the end of the movable rod 37 far away from the connecting rod 36, and the connecting rod 36 can adjust the angle thereof by using the second rotating shaft 22, so that the movable rod 37 and the second drill 40 can conveniently carve the side surface of the material.

In conclusion, when the intelligent engraving device capable of being interconnected and engraving at multiple angles is used, firstly, the engraving plate 31 is placed on the placing plate 25 on the workbench 17, the engraving template is placed on the movable lath 27, the fixture block 29 is rotated by utilizing the threaded connection between the fixture block 29 and the vertical rod 28, the distance between the engraving template and the fixture block 29 is retracted, the fixture block 29 fixes the engraving template on the movable lath 27, the workbench 17 is placed above the fixed rod 16 by utilizing the size matching relationship between the workbench 17 and the fixed rod 16, according to the actual situation, the nut 8 is rotated by utilizing the threaded connection between the nut 8 and the screw rod 6, the nut 8 can drive the pressing plate 7 to move downwards, the pressing plate 7 presses the mounting plate 5 downwards by virtue of the ejector rod 9, at the moment, the mounting plate 5 can move on the vertical slide rail 3 in coordination with the movement of the pressing plate 7, and after the height of the mounting plate 5 is adjusted, utilize the rotating relation between mechanical lever 10 and the first pivot 11, adjust the angle of mechanical lever 10, can stretch first spring 12 during the angle increase, otherwise, can compress first spring 12, first drill bit 13 can utilize the carving tool 33 of bottom to carry out planar sculpture to the material, can produce the piece in the sculpture, the piece can get into dust exhaust pipe 35 through dust absorption mouth 34, and then dust exhaust pipe 35 can discharge the piece, at this moment, emery wheel 32 also can be simultaneously polished the glyptic place, later connecting rod 36 can utilize second pivot 22, adjust the angle of self, make things convenient for movable rod 37 and second drill bit 40 to carry out the sculpture of side to the material.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides a can carry out interconnection and can carry out glyptic intelligent engraving device by multi-angle, includes base (1) and bottom plate (14), its characterized in that: supporting rods (2) are fixed on the left side and the right side above the base (1), vertical sliding rails (3) are arranged on the inner sides of the supporting rods (2), the supporting rods (2) are fixedly welded with the base (1), a net line port (4) is formed in the outer sides of the vertical sliding rails (3), a second spring (15) is connected to the bottom of the bottom plate (14), and the bottom plate (14) is located at the bottom of the middle of the upper portion of the base (1);

fixing rods (16) are fixed on the left side and the right side above the bottom plate (14), a workbench (17) is placed above the fixing rods (16), the fixing rods (16) are connected with the bottom plate (14) in an embedded mode, the workbench (17) is connected with the fixing rods (16) in an embedded mode, the bottom plate (14) is perpendicular to the second springs (15), and the second springs (15) are uniformly arranged along the horizontal direction of the bottom plate (14);

fixed plate (23) are fixed on the surface of workstation (17), and the surface of fixed plate (23) is provided with spout (24), be the welding between fixed plate (23) and workstation (17), place board (25) have been placed to the inboard of fixed plate (23), and place and be connected with stretch cord (26) between board (25) and fixed plate (23), dead lever (16) through stretch cord (26) with place interconnect between board (25), and fixed plate (23) are symmetrical about the horizontal central line of workstation (17).

2. The intelligent engraving equipment capable of being interconnected and engraving at multiple angles as claimed in claim 1, wherein: the utility model discloses a vertical slide rail (3) is characterized in that the surface top of vertical slide rail (3) is settled there is mounting panel (5), and all is fixed with screw rod (6) in the top left and right sides of mounting panel (5), clamp plate (7) are installed in the outside of screw rod (6), and nut (8) are installed in the top outside of clamp plate (7), nut (8) and clamp plate (7) all are connected for the gomphosis between screw rod (6), the bottom of clamp plate (7) is connected with ejector pin (9), be threaded connection between nut (8) and screw rod (6), and all be symmetrical about the vertical center line of clamp plate (7) between nut (8) and screw rod (6).

3. The intelligent engraving equipment capable of being interconnected and engraving at multiple angles as claimed in claim 2, wherein: the utility model discloses a drilling machine, including mounting panel (5), the bottom internally mounted of mounting panel (5) has mechanical pole (10), and the centre of mechanical pole (10) is provided with first pivot (11), be connected for the gomphosis between mechanical pole (10) and mounting panel (5), the inboard of mechanical pole (10) is connected with first spring (12), and the bottom arrangement of mechanical pole (10) has first drill bit (13), be connected for the gomphosis between first drill bit (13) and mechanical pole (10), mutually support between mechanical pole (10) and first pivot (11) and constitute revolution mechanic, and be threaded connection between first drill bit (13) and mechanical pole (10).

4. The intelligent engraving equipment capable of being interconnected and engraving at multiple angles as claimed in claim 1, wherein: a positioning rod (18) is arranged above the workbench (17), a movable plate (19) is arranged at the bottom of the positioning rod (18), the positioning rod (18) and the supporting rod (2) are fixedly welded, a bolt (20) is arranged between the movable plate (19) and the positioning rod (18), side plates (21) are arranged on the left side and the right side of the workbench (17), and a second rotating shaft (22) is arranged on the surface of each side plate (21).

5. The intelligent engraving equipment capable of being interconnected and engraving at multiple angles as claimed in claim 1, wherein: the surface of the sliding groove (24) is provided with a movable lath (27), the surface of the movable lath (27) is provided with a vertical rod (28), the vertical rod (28) and the movable lath (27) are welded, the outer side of the vertical rod (28) is provided with a clamping block (29), the clamping block (29) is in threaded connection with the vertical rod (28), and the clamping block (29) and the vertical rod (28) are symmetrical about the vertical center line of the movable lath (27).

6. The intelligent engraving equipment capable of being interconnected and engraving at multiple angles as claimed in claim 1, wherein: the novel carving and carving machine is characterized in that a third rotating shaft (30) is installed inside the placing plate (25), a carving plate (31) is placed on the surface of the placing plate (25), the carving plate (31) is connected with the placing plate (25) in an embedded mode, the placing plate (25) and the third rotating shaft (30) are matched with each other to form a rotating structure, and the third rotating shaft (30) penetrates through the placing plate (25) horizontally.

7. The intelligent engraving equipment capable of being interconnected and engraving at multiple angles as claimed in claim 3, wherein: grinding wheel (32) is installed in the outside of first drill bit (13), and the bottom arrangement of first drill bit (13) has carving tool (33), be the gomphosis between carving tool (33) and first drill bit (13) and be connected, the left and right sides of carving tool (33) all is provided with dust absorption mouth (34), and the top of dust absorption mouth (34) is connected with dust exhaust pipe (35), closely laminate between the medial surface of grinding wheel (32) and the lateral surface of first drill bit (13), and the size is mutually supported between grinding wheel (32) and first drill bit (13).

8. The intelligent engraving equipment capable of being interconnected and engraving at multiple angles as claimed in claim 4, wherein: the inner side of the second rotating shaft (22) is connected with a connecting rod (36), a movable rod (37) is arranged on the inner side of the connecting rod (36), a rotating rod (38) is installed between the movable rod (37) and the connecting rod (36), a movable shaft (39) is arranged in the middle of the movable rod (37), and a second drill bit (40) is installed at one end, far away from the connecting rod (36), of the movable rod (37).