CN114321308B

CN114321308B - Feeding mechanism and punching device

Info

Publication number: CN114321308B
Application number: CN202111488560.2A
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Suzhou Xiaowei Changxing Robot Co ltd
Current assignee: Suzhou Xiaowei Changxing Robot Co ltd
Priority date: 2021-12-07
Filing date: 2021-12-07
Publication date: 2024-04-26
Anticipated expiration: 2041-12-07
Also published as: CN114321308A

Abstract

The invention relates to a feeding mechanism and a punching device. A feed mechanism movably disposed within the drum; the transmission member is rotatably arranged in the rotary drum and meshed with the rotary drum and the pushing member; when the rotary drum rotates, the transmission piece can rotate under the driving of the rotary drum so as to drive the pushing piece to rotate, so that the first end of the pushing piece is screwed out of or screwed into the rotary drum. This feed mechanism, the impeller can be regarded as the drilling rod of drill bit, because the impeller can be by the rotary drum unscrewing or precession to the rotary drum under the cooperation of rotary drum and driving medium, this makes the drilling rod of drill bit can stretch out and draw back, both can reduce the required space of drill bit adjustment in patient's oral cavity like this, thereby can reduce the demand of opening degree, also can satisfy the demand to different bottom hole degree of depth under the prerequisite of not adopting additional extension bar or short planting body, also can avoid the interference of adjacent tooth, need not to extract the adjacent tooth that has the interference, can not increase patient's illness and planting cost.

Description

Feeding mechanism and punching device

Technical Field

The invention relates to the technical field of medical instruments, in particular to a feeding mechanism and a punching device.

Background

The artificial tooth implantation is a common treatment means for treating the tooth deficiency at present, and mainly comprises the steps of implanting an implant with biocompatibility into an alveolar bone at the tooth deficiency position, and implanting a tooth mold by taking the implant as a base through the tight combination of the implant and the alveolar bone. Wherein, when the implant is planted, the implant is firstly perforated in the alveolar bone and then is planted in the alveolar bone. At present, in dental implant surgery, in order to meet the requirements of mouth opening degree and bottom hole depth of different patients and different dental sites, the following four technical schemes are generally adopted for punching: (1) adding an extension bar to a perforating drill bit; (2) adopting a mouth gag to keep the mouth opening degree; (3) adopting a short implant to reduce the drilling depth; (4) extracting the adjacent teeth with interference, and re-planting. However, if the scheme (1) is adopted, the opening degree is affected, and the position of the drill is not easy to adjust; if the scheme (2) is adopted, the mouth gag may cause dislocation of the chin of the patient, and the user experience is poor; if the scheme (3) is adopted, the combination area of the short implant and the alveolar bone is reduced, especially the posterior alveolar tooth, so that the occlusion stress function of the implant is weakened; if the scheme (4) is adopted, the pain of patients and the planting cost are increased, and the cost performance is poor.

Disclosure of Invention

In view of the above, it is desirable to provide a feeding mechanism and a punching device.

A feed mechanism, the feed mechanism comprising: the device comprises a rotary drum, a pushing piece and a transmission piece;

the pushing member is movably arranged in the rotary drum;

the transmission piece is rotatably arranged in the rotary drum and meshed with the rotary drum and the pushing piece;

when the rotary drum rotates, the transmission piece can rotate under the drive of the rotary drum so as to drive the pushing piece to rotate, so that the first end of the pushing piece is screwed out of or screwed into the rotary drum.

In one embodiment, the transmission member comprises a plurality of transmission gear columns distributed along the circumferential direction of the pushing member, the transmission gear columns can rotate around the central axis of the transmission gear columns, and the transmission gear columns are meshed with the rotary drum and the pushing member.

In one embodiment, the transmission gear post comprises a first transmission part and a second transmission part which are coaxially arranged, wherein the diameter of the first transmission part is larger than that of the second transmission part;

The first transmission part is meshed with the pushing piece, and the second transmission part is meshed with the rotary drum; and/or, the first transmission part is meshed with the rotary drum, and the second transmission part is meshed with the pushing piece.

In one embodiment, the inner wall of the rotary drum is provided with a avoiding groove, the first transmission part corresponds to the avoiding groove and is meshed with the pushing piece, and the second transmission part is meshed with the rotary drum.

In one embodiment, the number of the first transmission parts is at least 1, the number of the second transmission parts is at least 2, the first transmission parts and the second transmission parts are alternately distributed along the axial direction of the transmission gear column, and the second transmission parts are arranged at two axial ends of the transmission gear column.

In one embodiment, the transmission further comprises a first planet carrier disposed within the drum;

The transmission gear column is provided with a plurality of limit holes, a limit column is formed on the end part, close to the first planet carrier, of the transmission gear column, the limit column extends into the corresponding limit hole, and/or the first planet carrier is provided with a plurality of limit columns, a limit groove is formed on the end part, close to the first planet carrier, of the transmission gear column, and the limit column extends into the corresponding limit groove.

In one embodiment, the feed mechanism further comprises an end cap for compressing the drive member into the drum.

In one embodiment, the feeding mechanism further comprises an elastic member disposed between the driving member and the end cap and configured to apply an axial preload force to the driving member.

In one embodiment, the elastic piece comprises a butterfly washer sleeved on the pushing piece, and two end faces of the butterfly washer are respectively abutted against the transmission piece and the end cover.

In one embodiment, the elastic piece further comprises a flat gasket sleeved on the pushing piece, and two end faces of the flat gasket are respectively abutted against the end cover and the butterfly gasket.

In one embodiment, the end cap includes a top cap and a pressing portion connected to the top cap and inserted into the drum;

The pushing piece is provided with a second end far away from the first end, and a friction part is arranged on the outer wall of the second end and can slide on the inner wall of the pressing part along the axial direction of the pushing piece.

In one embodiment, the friction portion is located at a port of the pressing portion when the first end of the pusher is rotated out to the limit position.

In one embodiment, the pushing member has a second end far away from the first end, and a first stop portion is provided on the second end, and when the first end of the pushing member is unscrewed, the first stop portion can abut against the transmission member so as to stop unscrewing the pushing member.

In one embodiment, a first anti-collision member is arranged on the end face, close to the transmission member, of the first stop portion, and the first anti-collision member can be abutted with the transmission member when the pushing member is unscrewed to the limit position.

In one embodiment, the outer wall of the drum is provided with conical teeth along its circumference.

In one embodiment, the first end of the pusher is provided with a mounting location;

The feeding mechanism further comprises a drill bit clamp which is arranged on the installation position of the pushing piece;

The drill bit is characterized in that a magnetic part is arranged in the drill bit clamp, an installation interface is arranged on the end face, far away from the pushing part, of the drill bit clamp, the installation interface corresponds to the magnetic part, and the installation interface is of a non-circular hole structure.

In one embodiment, a second stop is provided on the end of the drill bit holder remote from the pusher member, the second stop being adapted to stop movement when the first end of the pusher member is threaded into a limit position.

In one embodiment, a second crash-proof element is arranged on the end face of the second stop part, which is adjacent to the transmission element.

The feeding mechanism can be applied to dental implant surgery, and when the feeding mechanism is applied, the rotary drum of the feeding mechanism can drive the first end of the pushing piece to unscrew from the rotary drum or screw into the rotary drum through forward rotation or reverse rotation, so that a drill bit on the first end of the pushing piece drills a hole with a preset depth on the alveolar bone of a patient in a repeated feeding and withdrawing mode. Then, in the dental surgery, a doctor can be limited by the opening degree in order to adjust the space from the drill bit to the planning position, a feeding mechanism is additionally arranged at the head of the punching device, wherein a pushing piece of the feeding mechanism can be regarded as a drill rod of the drill bit, and the drill rod of the drill bit can be stretched out and drawn back by the rotating drum or screwed into the rotating drum under the cooperation of the rotating drum and the transmission piece, so that the drill rod of the drill bit can be stretched, the space required by the adjustment of the drill bit in the oral cavity of a patient can be reduced, the opening degree requirement can be reduced, the requirements on different bottom hole depths can be met under the premise that an extension rod or a short implant is not additionally arranged, the interference of adjacent teeth can be avoided, the adjacent teeth with interference are not required to be pulled out, and the pain and the planting cost of the patient can not be increased.

A punching device, the punching device comprising: a handle and a feed mechanism as claimed in any one of the preceding claims;

The head of the handle is provided with a mounting cavity, the rotary drum of the feeding mechanism is rotatably arranged in the mounting cavity, and the first end of the transmission piece of the feeding mechanism can be screwed out of or screwed into the mounting cavity.

In one embodiment, the punching device further comprises a driving piece and a rotating shaft, wherein the driving piece and the rotating shaft are arranged in the handle;

The driving piece can drive the rotary drum to rotate through the rotating shaft, and an included angle which is larger than 0 degrees and smaller than 180 degrees is formed between the central axis of the rotating shaft and the central axis of the pushing piece.

In one embodiment, the rotating shaft comprises a first rotating shaft and a second rotating shaft, and an included angle of more than 0 degrees and less than 180 degrees is formed between the first rotating shaft and the second rotating shaft;

The punching device further comprises a speed reducer, the first rotating shaft is arranged between the rotary drum and the speed reducer, and the second rotating shaft is arranged between the speed reducer and the driving piece.

In one embodiment, a first transmission gear is disposed on a first rotating shaft, a second transmission gear is disposed on a second rotating shaft, and the speed reducer includes: the gear shell, the second planet carrier and the plurality of reduction gears;

The gear housing is arranged in the handle, transmission teeth are arranged on the inner wall of the gear housing, the second planet carrier is positioned in the gear housing and meshed with the first transmission gear, the reduction gear is arranged on the second planet carrier, and the reduction gear surrounds the periphery of the second rotating shaft and meshed with the second transmission gear and the transmission teeth.

In one embodiment, the rotating shaft is sequentially provided with a first bearing and a second bearing along the axial direction of the rotating shaft, the first bearing is axially positioned through a first clamping ring, and the second bearing can move in the axial direction of the rotating shaft.

In one embodiment, the punching device further comprises a position sensor arranged between the rotating shaft and the inner wall of the handle, wherein the position sensor is used for acquiring and sending the unscrewing amount or the screwing amount of the first end of the pushing piece of the feeding mechanism.

In one embodiment, a spray head is provided on the outer wall of the head of the handle.

In one embodiment, the outer wall of the handle is provided with an anti-slip part, and the anti-slip part is of a convex structure or a groove structure.

The punching device can be applied to dental implant surgery, and when the punching device is applied, the rotary drum of the feeding mechanism can drive the first end of the pushing piece to unscrew from the rotary drum or screw into the rotary drum through forward rotation or reverse rotation, so that a drill bit on the first end of the pushing piece drills a hole with a preset depth on the alveolar bone of a patient in a repeated feeding and withdrawing mode. Then, in the dental surgery, a doctor can be limited by the opening degree in order to adjust the space from the drill bit to the planning position, a feeding mechanism is additionally arranged at the head of the punching device, wherein a pushing piece of the feeding mechanism can be regarded as a drill rod of the drill bit, and the drill rod of the drill bit can be stretched out and drawn back by the rotating drum or screwed into the rotating drum under the cooperation of the rotating drum and the transmission piece, so that the drill rod of the drill bit can be stretched, the space required by the adjustment of the drill bit in the oral cavity of a patient can be reduced, the opening degree requirement can be reduced, the requirements on different bottom hole depths can be met under the premise that an extension rod or a short implant is not additionally arranged, the interference of adjacent teeth can be avoided, the adjacent teeth with interference are not required to be pulled out, and the pain and the planting cost of the patient can not be increased.

Drawings

FIG. 1 is a cross-sectional view of a feed mechanism according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a punching device according to an embodiment of the present invention;

FIG. 3 is a partial cross-sectional view of FIG. 2;

FIG. 4 is a schematic structural diagram of a drilling device without a driving member and a drill bit according to an embodiment of the present invention;

FIG. 5 is a cross-sectional view of a device for drilling a hole without a driving member and a drill bit according to an embodiment of the present invention;

FIG. 6 is an enlarged partial schematic view of FIG. 5 at A;

FIG. 7 is an enlarged schematic view of a portion of FIG. 1 at A;

FIG. 8 is a front view of a drive post according to one embodiment of the present invention;

FIG. 9 is a schematic diagram of a driving gear post according to an embodiment of the present invention;

FIG. 10 is a side view of a feed mechanism provided in an embodiment of the present invention;

FIG. 11 is a schematic diagram of a pushing member according to an embodiment of the present invention;

FIG. 12 is an enlarged partial schematic view of FIG. 6 at A;

FIG. 13 is a cross-sectional view of a feed mechanism according to an embodiment of the present invention when the pusher is rotated out to the limit position;

FIG. 14 is an enlarged partial schematic view of FIG. 13 at A;

FIG. 15 is a schematic view of a drum according to an embodiment of the present invention;

FIG. 16 is a cross-sectional view of a drill bit holder according to one embodiment of the present invention;

FIG. 17 is a schematic view of a drill bit holder according to an embodiment of the present invention;

FIG. 18 is a cross-sectional view of a feed mechanism provided in an embodiment of the present invention with a pusher threaded into a limit position;

FIG. 19 is a schematic view showing the internal structure of a handle according to an embodiment of the present invention;

FIG. 20 is a schematic cross-sectional view of a decelerator according to an embodiment of the present invention;

FIG. 21 is a schematic structural view of a hole drilling device without a driving member and a drill bit according to an embodiment of the present invention;

fig. 22 is an enlarged partial schematic view of fig. 21 at a.

Wherein, the reference numerals in the accessories are as follows:

10. A feeding mechanism; 100. a rotating drum; 100a, avoiding grooves; 110. conical teeth; 200. a pushing member; 210. a friction part; 220. a first stop portion; 230. a first bumper; 300. a transmission member; 310. a driving gear column; 311. a first transmission part; 312. a second transmission part; 313. a limit column; 320. a first planet carrier; 320a, limiting holes; 400. an end cap; 410. a top cover; 420. a pressing part; 500. an elastic member; 510. butterfly washers; 520. a flat gasket; 600. a drill bit clamp; 600a, a mounting interface; 600a1, guiding ramp; 610. a magnetic member; 620. a second stop portion; 630. a second bumper; 20. a handle; 20a, a mounting cavity; 20b, an anti-slip part; 20c, a third bearing; 20d, a sealing member; 20e, a dust cover; 30. a rotating shaft; 30a, a first rotating shaft; 30a1, a first transmission gear; 30b, a second rotating shaft; 30c, a first bearing; 30d, a second bearing; 30e, a first clamping ring; 30f, locking the nut; 30g, a brake nut; 30h, a second clamping ring; 30i, a fourth bearing; 40. a speed reducer; 40a, tooth shells; 40b, a second planet carrier; 40c, a reduction gear; 50. a position sensor; 50a, a reading head; 50b, a code disc; 60. a spray head; 70. a drill bit; 80. a driving member.

Detailed Description

In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

An embodiment of the present invention provides a feeding mechanism 10, as shown in fig. 1, the feeding mechanism 10 includes: a drum 100, a pusher 200, and a driver 300; the pusher 200 is movably disposed within the drum 100; the transmission member 300 is rotatably disposed in the drum 100 and engaged with the drum 100 and the pusher member 200; when the drum 100 rotates, the transmission member 300 can rotate under the driving of the drum 100 to drive the pushing member 200 to rotate, so that the first end of the pushing member 200 is screwed out of the drum 100 or screwed into the drum 100.

The feeding mechanism 10 described above may be used in applications including, but not limited to, the field of medical devices, such as in punching devices used in dental implant surgery. The structure and operation of the feed mechanism 10 will be described below by taking the punching device shown in fig. 2 to 5 as an example.

The punching device may include a handle 20, a drill bit 70 disposed on the handle 20, a driving member 80, and a rotating shaft 30. Further, the head of the handle 20 has a mounting cavity in which the drum 100 of the feeding mechanism 10 is rotatably provided, and the driving member 80 can drive the drum 100 to rotate through the rotation shaft 30; the first end of the pusher 20 of the feed mechanism 10 may be unscrewed from or threaded into the mounting cavity; the drill bit 70 may be mounted directly to the mounting location of the first end of the pusher member 200 or mounted to the mounting location of the first end of the pusher member 200 by a bit clip 600 as shown in fig. 6.

In the dental implant surgery, the driving member 80 drives the drum 100 to rotate forward through the rotation shaft 30, and the driving member 300 rotates under the driving of the drum 100 to drive the second end of the pushing member 200 to rotate forward, so that the first end of the pushing member 200 is rotated out of the drum 100, and the drill 70 on the first end of the pushing member 200 outputs a certain feeding amount to the alveolar bone of the patient, so that the alveolar bone can be drilled; the driving member 80 drives the rotation of the rotation drum 100 through the rotation shaft 30, and the driving member 300 rotates under the driving of the rotation drum 100 to drive the second end of the pushing member 200 to rotate reversely, so that the first end of the pushing member 200 is screwed into the rotation drum 100, and the drill bit 70 on the first end of the pushing member 200 is withdrawn from the alveolar bone of the patient. Thereafter, the above steps, i.e., the drill 70 is repeatedly fed and withdrawn, until a hole of a predetermined depth is formed in the alveolar bone, may be repeated.

It can be seen that the feeding mechanism 10 described above can be applied to a dental implant surgery, and when the feeding mechanism 10 is applied, the rotary drum 100 can drive the first end of the pushing member 200 to be screwed out of the rotary drum 100 or screwed into the rotary drum 100 by forward rotation or reverse rotation, so that the drill 70 on the first end of the pushing member 200 drills a hole of a preset depth into the alveolar bone of a patient by repeatedly feeding and withdrawing. In dental surgery, a doctor can add the feeding mechanism 10 to the head of the punching device in order to adjust the space from the drill bit 70 to the planned position under the limitation of opening degree, wherein the pushing piece 200 of the feeding mechanism 10 can be regarded as a drill rod of the drill bit 70, and the pushing piece 200 can be screwed out of the drum 100 or screwed into the drum 100 under the cooperation of the drum 100 and the transmission piece 300, so that the drill rod of the drill bit 70 can stretch out and draw back, thereby not only reducing the space required by adjusting the drill bit 70 in the oral cavity of a patient, but also reducing the opening degree, meeting the requirements on different bottom hole depths without adding an extension rod or a short implant, avoiding the interference of adjacent teeth, avoiding the extraction of adjacent teeth with interference, and not increasing the pain and the planting cost of the patient.

As shown in fig. 6, in some embodiments of the present invention, the transmission member 300 includes a plurality of transmission gear columns 310 distributed along the circumferential direction of the pushing member 200, the transmission gear columns 310 being rotatable about their central axes, and the transmission gear columns 310 being engaged with the drum 100 and the pushing member 200. The transmission member 300 has a simple structure, and can be driven by the drum 100 to rotate the transmission member 300.

It will be appreciated that the inner wall of the drum 100 is provided with helical teeth, the outer wall of the pusher 200 is provided with helical teeth, and the outer wall of the driving gear post 310 is provided with helical teeth which are adapted to the helical teeth on the drum 100 and the pusher 200. The cross section of the thread tooth of the driving gear post 310 is isosceles triangle or isosceles trapezoid as shown in fig. 8, so as to ensure that the driving gear post 310 can transmit torque to the pushing member 200 in both forward and reverse directions, so that the pushing member 200 is screwed out of the drum 100 or screwed into the drum 100.

The plurality of driving gear posts 310 may be uniformly distributed along the circumferential direction of the pusher member 200 to make the rotation of the pusher member 200 smoother. Regarding the number of the driving gear posts 310, 2, 3,4, 5 or more may be provided, and may be selected according to specific needs. For example, if only to meet the requirement of smooth rotation of the pushing member 200, a small number of driving studs 310, such as 2 or 3, may be provided, and if a better requirement for rigidity or strength of the whole feeding mechanism 10 is required, a larger number of driving studs 310, such as 5 or 6, may be provided.

Regarding the structure of the driving gear post 310, as shown in fig. 7 to 9, the driving gear post 310 includes a first driving portion 311 and a second driving portion 312 coaxially disposed, and the diameter of the first driving portion 311 is larger than that of the second driving portion 312; the first transmission part 311 is engaged with the pusher 200, and the second transmission part 312 is engaged with the drum 100; and/or the first transmission portion 311 is engaged with the drum 100, and the second transmission portion 312 is engaged with the pusher 200. The transmission gear post 310 of the structure can ensure that all parts of the transmission gear post are not interfered with each other, so that the transmission gear post can be effectively meshed with the rotary drum 100 and the pushing piece 200.

In particular, in some embodiments of the present invention, as shown in fig. 7, the inner wall of the barrel has a relief groove 100a, the first transmission portion 311 corresponds to the relief groove 100a and engages with the pusher 200, and the second transmission portion 312 engages with the drum 100. In this way, the strength of the pushing member 200 can be ensured without forming the avoiding groove 100a in the pushing member 200, and the pushing member 200 is ensured not to break in the drilling process of the drill bit 70. The relief groove 100a may be a single annular groove structure or a structure formed by a plurality of grooves distributed at intervals along the circumferential direction.

Further, in some embodiments of the present invention, as shown in fig. 7 to 9, the number of the first transmission parts 311 is at least 1, the number of the second transmission parts 312 is at least 2, the first transmission parts 311 and the second transmission parts 312 are alternately distributed along the axial direction of the transmission gear post 310, and the second transmission parts 312 are disposed at both axial ends of the transmission gear post 310. Specifically, the number of the first transmission parts 311 is 1, the number of the second transmission parts 312 is 2, and the 2 second transmission parts 312 are disposed at both axial ends of the first transmission part 311. Compared with the structure with thin middle and thick two ends, the transmission gear column 310 with the structure can have certain strength and is not easy to break on the premise that the rotary drum 100 can effectively drive the transmission gear column 310 to rotate. For the case where the first transmission portion 311 is engaged with the drum 100 and the second transmission portion 312 is engaged with the pusher 200, the number of the first transmission portion 311 and the second transmission portion 312 is set to 1.

In the case that the transmission member 300 includes a plurality of transmission gear columns 310, as shown in fig. 10 and 14, the transmission member 300 further includes a first planetary carrier 320 disposed in the drum 100; the first planet carrier 320 has a plurality of limiting holes 320a (see fig. 10), the end of the driving gear post 310, which is close to the first planet carrier 320, is formed with a limiting post 313 (see fig. 9), the limiting post 313 extends into the corresponding limiting hole 320a, and/or the first planet carrier 320 is provided with a plurality of limiting posts, the end of the driving gear post 310, which is close to the first planet carrier, is provided with a limiting groove, and the limiting post extends into the corresponding limiting groove. The first planet carrier 320 can ensure that each driving gear post 310 can rotate at a fixed position, and no mess phenomenon occurs.

In consideration of the ease of processing, a plurality of limiting holes 320a may be preferentially formed in the first carrier 320, and the limiting post 313 may be formed on the end of the driving gear post 310. The number and distribution positions of the limiting holes 320a are the same as the number and distribution positions of the driving gear columns 310, for example, the number of the driving gear columns 310 is 3 and the 3 driving gear columns 310 are uniformly distributed along the circumferential direction of the pushing member 200, so that the number of the limiting holes 320a on the first planet carrier 320 is also 3 and the 3 limiting holes 320a are uniformly distributed along the circumferential direction of the pushing member 200.

As shown in fig. 6, in some embodiments of the invention, the feed mechanism 10 further includes an end cap 400, the end cap 400 being configured to press the transmission 300 into the drum 100. The end cap 400 may directly abut against the first carrier 320 of the driving member 300 to press the driving columns 310 of the driving member 300 between the first carrier 320 and the bottom wall of the drum 100, so as to ensure that each driving column 310 may rotate at a fixed position.

Further, in some embodiments of the present invention, as shown in fig. 6, the feeding mechanism 10 further includes an elastic member 500, where the elastic member 500 is disposed between the transmission member 300 and the end cover 400 and is used to apply an axial pre-tightening force to the transmission member 300. The elastic member 500 can prevent the end cover 400 from pressing the driving gear post 310 too tightly so that the driving gear post 310 cannot rotate, thereby ensuring the normal engagement of the driving gear post 310 with the roller and the pushing member 200.

As shown in fig. 6, the elastic member 500 includes a butterfly washer 510, the butterfly washer 510 is sleeved on the pushing member 200, and two end surfaces of the butterfly washer 510 are respectively abutted against the transmission member 300 and the end cover 400. Compared with the elastic member 500 with a spring structure, the butterfly washer 510 has a simple structure, and can apply enough axial pretightening force to the transmission member 300 by generating tiny deformation. In view of the small bearing area of the butterfly washer 510, in some embodiments of the present invention, as shown in fig. 6, the elastic member 500 further includes a flat washer 520, the flat washer 520 is sleeved on the pushing member 200, and two end surfaces of the flat washer 520 are respectively abutted against the end cover 400 and the butterfly washer 510. The flat washer 520 can ensure that the first planet carrier 320 of the transmission 300 is uniformly stressed, and can better rotate the transmission gear post 310 at a fixed position.

Where the feed mechanism 10 further includes an end cap 400, as shown in fig. 6, in some embodiments of the invention, the end cap 400 includes a top cap 410 and a pressing portion 420 connected to the top cap 410 and inserted into the drum 100; as shown in fig. 11, the friction portion 210 is provided on the outer wall of the second end of the pusher 200, and the friction portion 210 is slidable on the inner wall of the pressing portion 420 in the axial direction of the pusher 200. The friction part 210 may serve as a guide for the screwing-in or unscrewing of the pusher 200. Alternatively, the friction part 210 may be a rubber ring.

Further, in some embodiments of the present invention, as shown in fig. 12 and 13, when the first end of the pusher 200 is rotated out to the limit position, the friction portion 210 is located at the port of the pressing portion 420. It will be appreciated that once the first end of the pusher 200 is unscrewed to the extreme position, it cannot continue to unscrew outwardly. When the first end of the pusher 200 is rotated out to the limit position, the friction portion 210 still serves as a guide for screwing the pusher 200 into the drum 100, thereby securing the full movement of the pusher 200.

As shown in fig. 11, 13 and 14, in some embodiments of the present invention, a first stop portion 220 is disposed on the second end of the pushing member 200, and when the first end of the pushing member 200 is unscrewed, the first stop portion 220 can abut against the transmission member 300, so as to stop unscrewing the pushing member 200. The first stopper 220 may prevent the pusher 200 from being harmful to the pusher 200 from rotating back into the drum 100 as a whole due to the unscrewing of the pusher from the drum 100. As an example, as shown in fig. 13, the first stopper 220 can abut against the first carrier 320 of the transmission 300 to stop the pusher 200 from unscrewing. As an example, the friction part 210 may be disposed on a sidewall of the first stopper part 220, and it may be ensured that the friction part 210 may be better adhered to the pressing part 420 of the cap 400; the side wall of the first stop portion 220 is provided with an annular groove, and the friction portion 210 may be mounted in the annular groove by welding or the like.

Alternatively, as shown in fig. 11 and 13, the end surface of the first stop portion 220 near the transmission member 300 is provided with a first anti-collision member 230, and the first anti-collision member 230 can abut against the transmission member 300 when the pushing member 200 is rotated out to the limit position. The first anti-collision member 230 can avoid rigid stress when the first stop portion 220 abuts against the transmission member 300, so as to protect the pushing member 200 and the transmission member 300. The first anti-collision member 230 may be a rubber pad, and may be fixed on an end surface of the first stop portion 220 near the transmission member 300 by using an adhesive manner.

As shown in fig. 15, in some embodiments of the present invention, the outer wall of the drum 100 is provided with tapered teeth 110 along its circumference. In this manner, the drum 100 can be driven to rotate by means of a toothed transmission. It will be appreciated that the end of the shaft 30 of the perforating device is provided with conical teeth that fit the conical teeth 110 on the outer wall of the drum 100, which can change the direction of transmission compared to cylindrical teeth, so that the telescoping direction of the pusher 200 is distributed at a preset angle (e.g., 90 °) to the axial direction of the shaft 30.

As shown in fig. 6 and 12, in some embodiments of the present invention, a first end of the pushing member 200 is provided with a mounting position; the feeding mechanism 10 further includes a bit holder 600, the bit holder 600 being disposed on the mounting position of the pusher 200; as shown in fig. 16 and 17, a magnetic member 610 is disposed in the bit holder 600, and an end surface of the bit holder 600 away from the pushing member 200 is provided with a mounting interface 600a, where the mounting interface 600a corresponds to the magnetic member 610, and the mounting interface 600a has a non-circular hole structure. The bit holder 600 may be coupled to bits 70 of different lengths and diameters by a magnetic member 610, and the bits 70 may be disengaged by applying a reverse force greater than the magnetic attraction force when changing drills. The connector of the drill bit 70 is installed in the installation interface 600a of the drill bit clamp 600, and the installation interface 600a with a non-circular hole structure is used for transmitting torque to the drill bit 70, so that the drill bit clamp 600 can be ensured to drive the drill bit 70 to rotate together.

Optionally, the drill bit clamp 600 is threadably coupled to the pusher member 200. Specifically, the first end of the pushing member 200 is provided with a counterbore, a wall of the counterbore is provided with threads, and the bit holder 600 is provided with a screw that is fixed in the counterbore. During assembly, the bit 70 may be assembled in place by the screw, and then welded on the abutting surfaces, so that the reliability of the installation of the bit holder 600 may be ensured.

Alternatively, the mounting interface 600a may have a polygonal structure, such as a triangle, a quadrangle, or a pentagon structure, or a combination of curved surfaces and flat surfaces as shown in fig. 4 and 17.

Optionally, an end of the mounting interface 600a remote from the pusher 200 is provided with a guiding ramp 600a1. During loading, the drill bit 70 is rotated to align the chamfer on the drill bit 70 with the guide chamfer 600a1 on the mounting interface 600a of the drill bit holder 600, and the drill bit 70 may be slid into the mounting interface 600a of the drill bit holder 600.

Further, in some embodiments of the present invention, as shown in fig. 16 and 17, a second stop 620 is provided on an end of the drill bit holder 600 away from the pusher member 200, and the second stop 620 is used to stop the movement when the first end of the pusher member 200 is screwed into the limit position. As an example, when the first end of the pusher 200 is threaded into the drum 100, the second stop 620 can abut the head of the handle 20 of the perforating device to stop the threaded movement of the pusher 200.

Alternatively, as shown in fig. 18, when the first end of the pusher member 200 is screwed into the limit position, a protective gap is provided between the second end of the pusher member 200 and the top cover 410. In this way, the pusher 200 can be prevented from collision interference with the end cap 400.

Alternatively, as shown in fig. 16 and 17, a second anti-collision member 630 is disposed on an end surface of the second stop portion 620 near the transmission member 300. The second anti-collision member 630 can abut against the head of the handle 20 of the punching device when the pushing member 200 is screwed into the limit position, so as to avoid rigid stress, and thus, the drill clamp 600 is protected. The second anti-collision member 630 may be a rubber pad, and may be fixed to the second stop portion 620 by using an adhesive or the like.

Another embodiment of the present invention provides a punching device, as shown in fig. 2, which includes a handle 20 and a feeding mechanism 10 as described in any one of the above; the head of the handle 20 has a mounting cavity in which the drum 100 of the feed mechanism 10 is rotatably disposed, and into which the first end of the transmission 300 of the feed mechanism 10 can be screwed out of or into.

It can be seen that the above-mentioned punching device can be applied to a dental implant surgery, and when the punching device is applied, the drum 100 of the feeding mechanism 10 can drive the first end of the pushing member 200 to be screwed out of the drum 100 or into the drum 100 by forward rotation or reverse rotation, so that the drill 70 on the first end of the pushing member 200 can drill a hole of a preset depth in the alveolar bone of a patient by repeatedly feeding and withdrawing. In dental surgery, a doctor can add the feeding mechanism 10 to the head of the punching device in order to adjust the space from the drill bit 70 to the planned position under the limitation of opening degree, wherein the pushing piece 200 of the feeding mechanism 10 can be regarded as a drill rod of the drill bit 70, and the pushing piece 200 can be screwed out of the drum 100 or screwed into the drum 100 under the cooperation of the drum 100 and the transmission piece 300, so that the drill rod of the drill bit 70 can stretch out and draw back, thereby not only reducing the space required by adjusting the drill bit 70 in the oral cavity of a patient, but also reducing the opening degree, meeting the requirements on different bottom hole depths without adding an extension rod or a short implant, avoiding the interference of adjacent teeth, avoiding the extraction of adjacent teeth with interference, and not increasing the pain and the planting cost of the patient.

In some embodiments of the present invention, the punching device further includes a driving member 80 disposed in the handle 20 and a rotating shaft 30; the driving member 80 can drive the drum 100 to rotate through the rotation shaft 30, and an included angle between the central axis of the rotation shaft 30 and the central axis of the pushing member 200 is greater than 0 ° and less than 180 °. The angle between the central axis of the rotation shaft 30 and the central axis of the pushing member 200 is set to be greater than 0 deg. and less than 180 deg., which is advantageous for aligning the drill bit 70 to any alveolar bone, thereby facilitating drilling. Alternatively, the driving member 80 may be a motor. The motor and the handle can be connected in a plug-in mode, namely, the motor and the handle are coaxially connected and inserted in a butt joint mode, then are twisted left and right relatively, and the connection is indicated by hearing a 'click' sound; when the two are disconnected, the two are coaxially and reversely pulled out by directly applying reverse force.

Further, as shown in fig. 19, in some embodiments of the present invention, the rotating shaft 30 includes a first rotating shaft 30a and a second rotating shaft 30b, and an included angle between the first rotating shaft 30a and the second rotating shaft 30b is greater than 0 ° and less than 180 °; the handle 20 further includes a speed reducer 40, the first shaft 30a is disposed between the drum 100 and the speed reducer 40, and the second shaft 30b is disposed between the speed reducer 40 and the driving member 80. The rotating shaft 30 is provided with a structure of matching the first rotating shaft 30a and the second rotating shaft 30b3, and the handle 20 can be correspondingly provided with a bending structure, so that the drill bit 70 can be conveniently inserted into the rear tooth, and the rear tooth can be conveniently repaired.

In particular, in some embodiments of the present invention, as shown in fig. 19, a first transmission gear 30a1 is disposed on a first rotating shaft 30a, a second transmission gear is disposed on a second rotating shaft 30b, and a speed reducer 40 includes: a gear housing 40a, a second carrier 40b, and a plurality of reduction gears 40c (see fig. 20); the gear housing 40a is disposed in the handle 20, and has a driving gear disposed on an inner wall thereof, the second planet carrier 40b is disposed in the gear housing 40a and engaged with the first driving gear 30a1, the reduction gear 40c is disposed on the second planet carrier 40b, and the reduction gear 40c surrounds the second rotating shaft 30b and is engaged with the second driving gear and the driving gear. When the second rotating shaft 30b rotates under the driving of the driving member 80, the second transmission gear thereon can drive the reduction gear 40c to rotate around the transmission gear on the gear housing 40a, and the reduction gear 40c can thereby drive the second planet carrier 40b to rotate; then, the first transmission gear 30a1 on the first shaft 30a rotates under the engagement of the second planet carrier 40b, thereby rotating the drum 100.

Alternatively, the reduction gears 40c may be uniformly distributed along the circumferential direction of the second rotation shaft 30b, thus facilitating smooth rotation of the second carrier 40 b. As for the number of reduction gears 40c, the embodiment of the present invention is not particularly limited, and for example, 2,3, 4 or more are provided.

Alternatively, the first transmission gear 30a1 may be integrally formed or otherwise assembled on the first rotating shaft 30a, for example, as shown in fig. 19, a brake screw 30g and a second snap ring 30h are disposed on the first rotating shaft 30a, and the first transmission gear 30a1 is limited between the brake screw 30g and the second snap ring 30 h.

Alternatively, as shown in fig. 19, the second rotation shaft 30d may be rotatably provided in the handle 20 through a fourth bearing 30i, thus facilitating the rotation of the second rotation shaft 30 d.

As shown in fig. 19, in some embodiments of the present invention, the rotating shaft 30 is provided with a first bearing 30c and a second bearing 30d in this order in the axial direction thereof, the first bearing 30c being axially positioned by a first snap ring 30e, and the second bearing 30d being movable in the axial direction of the rotating shaft 30. The first bearing 30c can ensure normal rotation of the rotating shaft 30, and the second bearing 30d can prevent the rotating shaft 30 from locking due to expansion caused by heat and contraction caused by cold. As an example, the first bearing 30c and the second bearing 30d are disposed on the first rotation shaft 30a and are sequentially distributed in a direction from the decelerator 40 to the drum 100. Alternatively, the number of the first snap rings 30e is 2 and is disposed on the first rotation shaft 30a3 at intervals, and the first bearing 30c is limited between the 2 first snap rings 30 e.

With the punching device further including the shaft 30, as shown in fig. 19, in some embodiments of the present invention, the punching device further includes a position sensor 50 disposed between the shaft 30 and the inner wall of the handle 20, where the position sensor 50 is used to obtain and send the rotation amount or the precession amount of the first end of the pushing member 200 of the feeding mechanism 10. With the position sensor 50, the amount of rotation or the amount of precession of the first end of the pusher member 200 can be obtained, so that a hole of a desired depth can be drilled in the alveolar bone.

Alternatively, the position sensor 50 may be a measuring encoder, as shown in fig. 19, including a reading head 50a disposed on the handle 20 and sleeved outside the rotating shaft 30, and a code wheel 50b disposed on the rotating shaft 30. When the spindle 30 rotates, the reading head 50a can determine the angle by which the spindle 30 rotates by reading the number on the code wheel 50b, so that the amount of rotation or precession of the first end of the pusher 200 can be determined.

As shown in fig. 21 and 22, in some embodiments of the present invention, a spray head 60 is provided on the outer wall of the head of the handle 20. The spray head 60 may be externally connected to a pipe so as to provide cooling fluid (e.g., to the drill bit 70) to cool the drill bit 70.

As shown in fig. 4, in some embodiments of the present invention, an anti-slip part 20b is provided on an outer wall of the handle 20, and the anti-slip part 20b is a protrusion structure or a groove structure. The anti-slip part 20b can increase the friction of the hand grip and improve the grip experience. Optionally, the anti-slip portion 20b is provided at a bend of the handle 20.

As shown in fig. 6, in some embodiments of the present invention, the drum 100 of the feed mechanism 10 is rotatably disposed in the mounting cavity of the head of the handle 20 by the third bearing 20c, thus facilitating rotation of the drum 100.

Alternatively, the number of third bearings 20c may be 2, with one third bearing 20c being disposed adjacent the top cover 410 of the end cap 400 and another third bearing 20c being disposed adjacent the drill bit holder 600. Specifically, a first limiting boss is disposed in the mounting cavity of the head of the handle 20, and one of the third bearings 20c is mounted between the top cover 410 of the end cover 400 and the first limiting boss; the wall of the mounting cavity of the head of the handle 20 extends along the radial direction of the pushing member 200 to form a second limiting boss, the outer wall of the drum 100 extends along the radial direction of the drum itself to form a third limiting boss, and the other third bearing 20c is mounted between the second limiting boss and the third limiting boss.

As shown in fig. 18, the second limiting boss is provided with a sealing element 20d, and the sealing element 20d is used for sealing a gap between the second limiting boss and the pushing element 200, so that foreign matters in the oral cavity can be prevented from entering the mounting cavity of the handle 20, and the protection effect on the punching device can be achieved. The seal 20d may be a rubber seal ring, and may be fixed by adhesion or the like. The second limiting boss can also be provided with a dust cover 20e, and the dust cover 20e is in small clearance fit with the pushing piece 200 and the drill bit clamp 600, so that a certain dust prevention effect can be achieved, and the normal movement of the pushing piece is not influenced.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims

1. A feeding mechanism for a punching device in dental implant surgery, characterized in that the feeding mechanism (10) comprises: a drum (100), a pushing member (200) and a transmission member (300);

The rotary drum (100) is arranged in a mounting cavity of a handle (20) of the punching device and can rotate under the drive of a driving piece (80) of the punching device;

The pushing member (200) is movably arranged in the rotary drum (100), and a first end of the pushing member (200) is used for mounting a drill bit (70);

The transmission member (300) is rotatably arranged in the rotary drum (100) and is meshed with the rotary drum (100) and the pushing member (200);

when the rotary drum (100) rotates, the transmission piece (300) can rotate under the driving of the rotary drum (100) so as to drive the pushing piece (200) to rotate, so that the first end of the pushing piece (200) is screwed out or screwed into the rotary drum (100) to drive a drill rod of the drill bit (70) to stretch out and draw back.

2. The feed mechanism of claim 1, wherein the transmission member (300) includes a plurality of transmission gear columns (310) distributed along a circumferential direction of the pushing member (200), the transmission gear columns (310) being rotatable about a central axis thereof, the transmission gear columns (310) being engaged with the drum (100), the pushing member (200).

3. The feeding mechanism according to claim 2, wherein the driving gear post (310) comprises a first driving part (311) and a second driving part (312) which are coaxially arranged, and the diameter of the first driving part (311) is larger than that of the second driving part (312);

the first transmission part (311) is meshed with the pushing piece (200), and the second transmission part (312) is meshed with the rotary drum (100); and/or the first transmission part (311) is meshed with the rotary drum (100), and the second transmission part (312) is meshed with the pushing piece (200).

4. A feed mechanism according to claim 3, characterized in that the inner wall of the drum (100) has a relief groove (100 a), the first transmission portion (311) corresponds to the relief groove (100 a) and engages with the pusher (200), and the second transmission portion (312) engages with the drum (100).

5. The feeding mechanism according to claim 4, wherein the number of the first transmission parts (311) is at least 1, the number of the second transmission parts (312) is at least 2, the first transmission parts (311) and the second transmission parts (312) are alternately distributed along the axial direction of the transmission gear post (310), and the second transmission parts (312) are arranged at both axial ends of the transmission gear post (310).

6. The feed mechanism of claim 2, wherein the transmission (300) further comprises a first planet carrier (320) disposed within the drum (100);

the novel planetary gear rack is characterized in that a plurality of limiting holes (320 a) are formed in the first planetary gear rack (320), a limiting column (313) is formed in the end portion, close to the first planetary gear rack (320), of the driving gear column (310), the limiting column (313) extends into the corresponding limiting hole (320 a), and/or a plurality of limiting columns are arranged on the first planetary gear rack (320), a limiting groove is formed in the end portion, close to the first planetary gear rack (320), of the driving gear column (310), and the limiting column extends into the corresponding limiting groove.

7. The feed mechanism of any one of claims 1-6, wherein the feed mechanism (10) further comprises an end cap (400), the end cap (400) being configured to press the transmission member (300) into the drum (100).

8. The feed mechanism of claim 7, wherein the feed mechanism (10) further comprises an elastic member (500), the elastic member (500) being disposed between the transmission member (300) and the end cap (400) and being configured to apply an axial preload force to the transmission member (300).

9. The feeding mechanism according to claim 8, wherein the elastic member (500) comprises a butterfly washer (510), the butterfly washer (510) is sleeved on the pushing member (200), and two end faces of the butterfly washer (510) are respectively abutted against the transmission member (300) and the end cover (400).

10. The feeding mechanism according to claim 9, wherein the elastic member (500) further comprises a flat washer (520), the flat washer (520) is sleeved on the pushing member (200), and two end faces of the flat washer (520) are respectively abutted against the end cover (400) and the butterfly washer (510).

11. The feeding mechanism as recited in claim 7, wherein the end cap (400) includes a top cap (410) and a pressing portion (420) connected to the top cap (410) and inserted into the drum (100);

The pushing member (200) has a second end far from the first end, and a friction part (210) is provided on an outer wall of the second end, and the friction part (210) is capable of sliding on an inner wall of the pressing part (420) along an axial direction of the pushing member (200).

12. The feed mechanism of claim 11, wherein the friction portion (210) is located at a port of the pressing portion (420) when the first end of the pusher (200) is unscrewed to an extreme position.

13. The feeding mechanism according to any one of claims 1-6, wherein the pusher (200) has a second end remote from the first end, and a first stop (220) is provided on the second end, the first stop (220) being adapted to abut the transmission member (300) when the first end of the pusher (200) is unscrewed, so as to stop unscrewing the pusher (200).

14. The feeding mechanism according to claim 13, characterized in that a first anti-collision member (230) is provided on an end surface of the first stop portion (220) close to the transmission member (300), the first anti-collision member (230) being capable of abutting against the transmission member (300) when the pusher (200) is unscrewed to an extreme position.

15. The feeding mechanism according to any one of claims 1 to 6, wherein the outer wall of the drum (100) is provided with conical teeth (110) in its own circumferential direction.

16. The feeding mechanism according to any one of claims 1-6, wherein a mounting location is provided on the first end of the pusher (200);

the feeding mechanism (10) further comprises a drill clamp (600), wherein the drill clamp (600) is arranged on the mounting position of the pushing piece (200);

The drill bit clamp (600) is internally provided with a magnetic part (610), the end face, far away from the pushing part (200), of the drill bit clamp (600) is provided with a mounting interface (600 a), the mounting interface (600 a) corresponds to the magnetic part (610), and the mounting interface (600 a) is of a non-circular hole structure.

17. The feeding mechanism according to claim 16, wherein a second stop (620) is provided on the end of the drill clamp (600) remote from the pusher (200), the second stop (620) being adapted to stop the movement when the first end of the pusher (200) is screwed into an extreme position.

18. The feed mechanism of claim 17, wherein a second bump guard (630) is provided on an end surface of the second stop portion (620) adjacent to the transmission member (300).

19. A punching device, characterized in that the punching device comprises: handle (20) and feeding mechanism (10) according to any one of claims 1-18;

The head of the handle (20) has a mounting cavity in which the drum (100) of the feed mechanism (10) is rotatably arranged, and from which the first end of the transmission member (300) of the feed mechanism can be screwed out or into.

20. The perforating apparatus of claim 19, characterized in that the perforating apparatus further comprises a drive member (80) disposed within the handle (20) and a spindle (30);

the driving piece (80) can drive the rotary drum (100) to rotate through the rotating shaft (30), and an included angle of more than 0 degrees and less than 180 degrees is formed between the central axis of the rotating shaft (30) and the central axis of the pushing piece (200).

21. The punching device according to claim 20, characterized in that the rotation shaft (30) comprises a first rotation shaft (30 a) and a second rotation shaft (30 b), the first rotation shaft (30 a) and the second rotation shaft (30 b) having an angle therebetween of more than 0 ° and less than 180 °;

The punching device further comprises a speed reducer (40), the first rotating shaft (30 a) is arranged between the rotary drum (100) and the speed reducer (40), and the second rotating shaft (30 b) is arranged between the speed reducer (40) and the driving piece (80).

22. Perforating apparatus as claimed in claim 21, characterized in that the first rotation shaft (30 a) is provided with a first transmission gear (30 a 1), the second rotation shaft (30 b) is provided with a second transmission gear, the reducer (40) comprises: a gear housing (40 a), a second carrier (40 b) and a plurality of reduction gears (40 c);

The gear housing (40 a) is arranged in the handle (20) and is provided with transmission teeth on the inner wall, the second planet carrier (40 b) is positioned in the gear housing (40 a) and is meshed with the first transmission gear (30 a 1), the reduction gear (40 c) is arranged on the second planet carrier (40 b), and the reduction gear (40 c) surrounds the periphery of the second rotating shaft (30 b) and is meshed with the second transmission gear and the transmission teeth.

23. The punching device according to claim 20, characterized in that the rotating shaft (30) is provided with a first bearing (30 c) and a second bearing (30 d) in order along the axial direction thereof, the first bearing (30 c) is axially positioned by a first snap ring (30 e), and the second bearing (30 d) is movable in the axial direction of the rotating shaft (30).

24. The punching device according to claim 20, characterized in that it further comprises a position sensor (50) provided between the rotation shaft (30) and the inner wall of the handle (20), the position sensor (50) being adapted to acquire and send the rotation or precession of the first end of the pusher (200) of the feeding mechanism.

25. Perforating apparatus as claimed in any one of claims 19-24, characterized in that a spray head (60) is provided on the outer wall of the head of the handle (20).

26. Perforating apparatus as claimed in any one of claims 19-24, characterized in that the outer wall of the handle (20) is provided with anti-slip parts (20 b), the anti-slip parts (20 b) being of a convex or concave configuration.