阅读说明：本技术 一种口腔用钻机钻头自动更换装置 (Automatic drill bit replacing device of oral drilling machine ) 是由 占先国 占莹莹 占薇薇 于 2020-11-25 设计创作，主要内容包括：本发明公开了一种口腔用钻机钻头自动更换装置,包括握管,握管的两端分别固定安装有固定管和安装管,安装管内转动安装有转板,固定管内安装有驱动电机,驱动电机的输出端固定连接有转杆,且转杆的一端延伸至安装管内,转杆的一端固定安装有第一锥齿轮,转板的外侧壁上固定安装有与第一锥齿轮相互齿轮啮合的第二锥齿轮。本发明中将矩形杆的顶端插入对应的矩形槽内,第一弹簧由于恢复自身弹力推动限位块的一端移动至对应的限位槽内就可以将矩形杆和钻头固定安装在转板和安装管上,推动活动块带动推杆将限位块推动至限位槽的外侧就可以将矩形杆和钻头从转板和安装管上拆下,安装拆卸方便,从而可以方便的对钻头进行更换,实用效果好。(The invention discloses an automatic drill bit replacing device of a drilling machine for oral cavity, which comprises a holding tube, wherein a fixed tube and an installation tube are respectively and fixedly installed at two ends of the holding tube, a rotating plate is rotatably installed in the installation tube, a driving motor is installed in the fixed tube, the output end of the driving motor is fixedly connected with a rotating rod, one end of the rotating rod extends into the installation tube, a first bevel gear is fixedly installed at one end of the rotating rod, and a second bevel gear which is in gear engagement with the first bevel gear is fixedly installed on the outer side wall of the rotating plate. According to the invention, the top end of the rectangular rod is inserted into the corresponding rectangular groove, the rectangular rod and the drill bit can be fixedly installed on the rotating plate and the installation pipe by restoring the elasticity of the first spring to push one end of the limiting block to move into the corresponding limiting groove, the rectangular rod and the drill bit can be detached from the rotating plate and the installation pipe by pushing the movable block to drive the push rod to push the limiting block to the outer side of the limiting groove, and the installation and detachment are convenient, so that the drill bit can be conveniently replaced, and the practical effect is good.)

1. The utility model provides an oral cavity is with automatic device of changing of rig drill bit, includes holding tube (1), the both ends of holding tube (1) fixed mounting respectively have fixed pipe (2) and installation pipe (3), its characterized in that: a rotating plate (4) is rotatably installed in the installation pipe (3), a driving motor is installed in the fixed pipe (2), a rotating rod (6) is fixedly connected to the output end of the driving motor, one end of the rotating rod (6) extends into the installation pipe (3), a first bevel gear (7) is fixedly installed at one end of the rotating rod (6), a second bevel gear (8) meshed with the first bevel gear (7) in a gear manner is fixedly installed on the outer side wall of the rotating plate (4), a second annular limiting block (9) is fixedly installed on the rotating rod (6), a second annular limiting groove matched with the second annular limiting block (9) is formed in the installation pipe (3), a rectangular rod (10) is detachably installed at the bottom end of the rotating plate (4), a drill bit (11) is fixedly installed at the bottom end of the rectangular rod (10), and a rectangular groove (12) matched with the rectangular rod (10) is formed in the bottom wall of the rotating plate (4), rectangle pole (10) and be equipped with connecting device between commentaries on classics board (4), connecting device includes two stopper (13) of symmetry movable mounting on rectangle pole (10) top lateral wall, two spacing groove (17) of mutually supporting with stopper (13) are seted up to the symmetry on the inside wall of rectangular channel (12), change board (4) and go up symmetry movable mounting two push rods (18) of mutually supporting with stopper (13), and the one end of push rod (18) all extends to in corresponding spacing groove (17), the top of installation pipe (3) is equipped with the through-hole, and the top of changeing board (4) extends to in the through-hole, the top threaded connection of installation pipe (3) has seal cap (25) of mutually supporting with the through-hole.

2. The automatic drill bit changing device of an oral drill according to claim 1, wherein: two first annular limiting blocks (5) are symmetrically and fixedly mounted on the outer side wall of the rotating plate (4), and two first annular limiting grooves matched with the first annular limiting blocks (5) are symmetrically formed in the inner side wall of the mounting pipe (3).

3. The automatic drill bit changing device of an oral drill according to claim 1, wherein: two mounting grooves (14) of mutually supporting with stopper (13), two are seted up to the symmetry on the lateral wall on rectangle pole (10) top all the activity is inserted on the inside wall of mounting groove (14) and is equipped with a plurality of first movable rods (15), and the equal fixed mounting of the one end of first movable rod (15) is on stopper (13), every all around being equipped with first spring (16) on the lateral wall of first movable rod (15), and the both ends difference fixed mounting of first spring (16) is on the lateral wall of stopper (13) and the inside wall of mounting groove (14).

4. The automatic drill bit changing device of an oral drill according to claim 1, wherein: and one end of the limiting block (13) far away from the rectangular rod (10) is an arc surface.

5. The automatic drill bit changing device of an oral drill according to claim 1, wherein: two the equal fixed mounting in one end of push rod (18) is at movable block (19), and the top of movable block (19) all extends to the upside of changeing board (4), change on the roof of board (4) the symmetry set up two with movable block (19) movable groove (20) of mutually supporting, and movable groove (20) and movable block (19) one-to-one, two equal fixed mounting has second movable rod (21) on the inside wall of movable groove (20), and two second movable rod (21) run through two movable block (19) settings respectively, two all around being equipped with second spring (22) on the lateral wall of second movable rod (21), and the both ends difference fixed mounting of second spring (22) is on the lateral wall of movable block (19) and the inside wall of movable groove (20).

6. The automatic drill bit changing device of an oral drill according to claim 1, wherein: an annular baffle plate (23) is fixedly mounted on the outer side wall of the bottom end of the rectangular rod (10), and an annular connecting groove (24) matched with the annular baffle plate (23) is formed in the outer side wall of the bottom end of the rectangular groove (12).

7. The automatic drill bit changing device of an oral drill according to claim 1, wherein: a groove (26) is formed in the top wall of the sealing top cover (25), a convex block (27) is fixedly mounted on the inner side wall of the groove (26), and the convex block (27) is located in the groove (26).

8. The automatic drill bit changing device of an oral drill according to claim 1, wherein: an annular cover plate (28) is fixedly mounted on the outer side wall of the top end of the sealing top cover (25), and an annular placing groove (29) matched with the annular cover plate (28) is formed in the inner side wall of the top end of the through hole.

Technical Field

The invention relates to the technical field of dental drills, in particular to an automatic drill bit replacing device of a drilling machine for an oral cavity.

Background

The dental drill is a special medical apparatus for stomatology, the first dental drill driven by a motor is invented in 1858 by George-Harlington, the dental drill is commonly used for cleaning tartar and grinding decayed teeth and damaged teeth, the types of the dental drill are various, the dental drill can be divided into a high-speed dental drill and a low-speed dental drill according to the rotating speed and the structure, the use functions of the dental drill are different, so that the drill bits which do not need to be replaced in different sizes are required to be replaced, the conventional dental drill bit is inconvenient to replace, the practical effect is poor, and therefore improvement is required.

Disclosure of Invention

The invention aims to solve the problem that a drill bit of an oral drilling machine is inconvenient to replace in the prior art, and provides an automatic replacing device for the drill bit of the oral drilling machine.

In order to achieve the purpose, the invention adopts the following technical scheme:

an automatic drill bit replacing device for an oral drilling machine comprises a holding tube, wherein a fixed tube and an installation tube are respectively fixedly installed at two ends of the holding tube, a rotating plate is rotatably installed in the installation tube, a driving motor is installed in the fixed tube, a rotating rod is fixedly connected with the output end of the driving motor, one end of the rotating rod extends into the installation tube, a first bevel gear is fixedly installed at one end of the rotating rod, a second bevel gear meshed with the first bevel gear is fixedly installed on the outer side wall of the rotating plate, a second annular limiting block is fixedly installed on the rotating rod, a second annular limiting groove matched with the second annular limiting block is formed in the installation tube, a rectangular rod is detachably installed at the bottom end of the rotating plate, a drill bit is fixedly installed at the bottom end of the rectangular rod, and a rectangular groove matched with the rectangular rod is formed in the bottom wall of the rotating plate, the utility model discloses a sealing device for installation pipe, including rectangle pole and the commentaries on classics board, be equipped with connecting device between rectangle pole and the commentaries on classics board, connecting device includes two stoppers of symmetry movable mounting on rectangle pole top lateral wall, two spacing grooves of mutually supporting with the stopper are seted up to the symmetry on the inside wall of rectangular channel, the last symmetry movable mounting of commentaries on classics board has two push rods of mutually supporting with the stopper, and the one end of push rod all extends to the spacing inslot that corresponds, the top of installation pipe is equipped with the through-hole, and the top of changeing the board extends to in the through-hole, the top threaded connection of installation pipe.

Preferably, the outer side wall of the rotating plate is symmetrically and fixedly provided with two first annular limiting blocks, and the inner side wall of the mounting pipe is symmetrically provided with two first annular limiting grooves matched with the first annular limiting blocks.

Preferably, two mounting grooves mutually supporting with the stopper are seted up to the symmetry on the lateral wall on rectangle pole top, two equal activity is inserted on the inside wall of mounting groove and is equipped with a plurality of first movable rods, and the equal fixed mounting of the one end of first movable rod is on the stopper, every all around being equipped with first spring on the lateral wall of first movable rod, and the both ends difference fixed mounting of first spring is on the lateral wall of stopper and the inside wall of mounting groove.

Preferably, the end, far away from the rectangular rod, of the limiting block is an arc surface.

Preferably, two the equal fixed mounting in one end of push rod is at the movable block, and the top of movable block all extends to the upside of changeing the board, change the roof of board on the symmetry set up two with the movable block slot of mutually supporting, and movable slot and movable block one-to-one, two equal fixed mounting has the second movable rod on the inside wall in movable slot, and two second movable rods run through two movable block settings respectively, two all around being equipped with the second spring on the lateral wall of second movable rod, and the both ends difference fixed mounting of second spring is on the lateral wall of movable block and the inside wall in movable slot.

Preferably, an annular baffle is fixedly mounted on the outer side wall of the bottom end of the rectangular rod, and an annular connecting groove matched with the annular baffle is formed in the outer side wall of the bottom end of the rectangular groove.

Preferably, a groove is formed in the top wall of the sealing top cover, a convex block is fixedly mounted on the inner side wall of the groove, and the convex block is located in the groove.

Preferably, an annular cover plate is fixedly mounted on the outer side wall of the top end of the sealing top cover, and an annular placing groove matched with the annular cover plate is formed in the inner side wall of the top end of the through hole.

Compared with the prior art, the invention has the following beneficial effects:

1. the top end of the rectangular rod is inserted into the corresponding rectangular groove, the rectangular rod and the drill bit can be fixedly installed on the rotating plate and the installation pipe by the first spring due to the fact that the first spring recovers the elasticity of the first spring to push one end of the limiting block to move into the corresponding limiting groove, the movable block is pushed to drive the push rod to push the limiting block to the outer side of the limiting groove, the rectangular rod and the drill bit can be detached from the rotating plate and the installation pipe, the installation and the detachment are convenient, and therefore the drill bit can be conveniently replaced, and the practical effect is good;

2. the outer side wall of the bottom end of the rectangular rod is fixedly provided with the annular baffle which is tightly attached to the bottom wall of the rotating plate, so that the sealing property of the connection between the rectangular rod and the rotating plate is improved, liquid can be prevented from entering the rectangular groove at will, and the using effect is good;

3. the outer side wall at the top end of the sealing cover plate is fixedly provided with the annular cover plate, and the annular cover plate is attached to the top wall of the installation pipe, so that the sealing performance of the sealing cover plate connected with the installation pipe is improved.

Drawings

FIG. 1 is a first front sectional view of an automatic drill bit changing device of an oral drill according to the present invention;

FIG. 2 is a second front sectional view of the automatic drill bit exchanging device of the oral drill according to the present invention;

FIG. 3 is a schematic front view of an automatic drill bit exchanging device of an oral drill according to the present invention;

FIG. 4 is an enlarged view of the structure of part A of an automatic bit exchange device of an oral drill according to the present invention;

fig. 5 is an enlarged view of a part B of the automatic bit exchange device of the oral drill according to the present invention.

In the figure: the pipe is held to 1, 2 fixed pipes, 3 installation pipes, 4 revolving plates, 5 first annular limiting blocks, 6 revolving bars, 7 first bevel gears, 8 second bevel gears, 9 second annular limiting blocks, 10 rectangular bars, 11 drill bits, 12 rectangular grooves, 13 limiting blocks, 14 mounting grooves, 15 first movable bars, 16 first springs, 17 limiting grooves, 18 push rods, 19 movable blocks, 20 movable grooves, 21 second movable bars, 22 second springs, 23 annular baffle plates, 24 annular connecting grooves, 25 sealing top covers, 26 grooves, 27 convex blocks, 28 annular cover plates and 29 annular placing grooves.

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, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, 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 particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-5, an automatic device of changing of rig drill bit for oral cavity, including holding tube 1, the both ends of holding tube 1 fixed mounting respectively have fixed pipe 2 and installation pipe 3, the board 4 that changes is installed to the installation pipe 3 internal rotation, symmetry fixed mounting has two first annular stopper 5 on the lateral wall of board 4 that changes, the first annular spacing groove of two and first annular stopper 5 mutually supporting is seted up to the symmetry on the inside wall of installation pipe 3, change board 4 can install 3 free rotations of pipe relatively and can not drop from installation pipe 3.

Install driving motor in the fixed pipe 2, driving motor's output fixedly connected with bull stick 6, and the one end of bull stick 6 extends to in the installation pipe 3, the one end fixed mounting of bull stick 6 has first bevel gear 7, fixed mounting has second bevel gear 8 with the mutual gear engagement of first bevel gear 7 on the lateral wall of rotor plate 4, fixed mounting has second annular stopper 9 on the bull stick 6, set up the second annular spacing groove of mutually supporting with second annular stopper 9 on the installation pipe 3, driving motor drive bull stick 6 can drive first bevel gear 7, second bevel gear 8 and rotor plate 4 free rotation.

The bottom end of the rotating plate 4 is detachably provided with a rectangular rod 10, the bottom end of the rectangular rod 10 is fixedly provided with a drill bit 11, the bottom wall of the rotating plate 4 is provided with a rectangular groove 12 mutually matched with the rectangular rod 10, a connecting device is arranged between the rectangular rod 10 and the rotating plate 4 and comprises two limiting blocks 13 symmetrically and movably arranged on the outer side wall of the top end of the rectangular rod 10, the outer side wall of the top end of the rectangular rod 10 is symmetrically provided with two mounting grooves 14 mutually matched with the limiting blocks 13, the inner side walls of the two mounting grooves 14 are movably inserted with a plurality of first movable rods 15, one end of each first movable rod 15 is fixedly arranged on each limiting block 13, the outer side wall of each first movable rod 15 is wound with a first spring 16, the two ends of each first spring 16 are respectively and fixedly arranged on the outer side wall of each limiting block 13 and the inner side wall of each mounting groove 14, the one end that rectangular rod 10 was kept away from to stopper 13 is the cambered surface, and stopper 13's cambered surface can contract to mounting groove 14 after receiving the extrusion in to be convenient for insert stopper 13 and rectangular rod 10 in rectangular channel 12.

Two limiting grooves 17 which are mutually matched with the limiting blocks 13 are symmetrically arranged on the inner side wall of the rectangular groove 12, two push rods 18 which are mutually matched with the limiting blocks 13 are symmetrically and movably arranged on the rotating plate 4, one ends of the push rods 18 extend into the corresponding limiting grooves 17, one ends of the two push rods 18 are fixedly arranged on the movable blocks 19, the top ends of the movable blocks 19 extend to the upper side of the rotating plate 4, two movable grooves 20 which are mutually matched with the movable blocks 19 are symmetrically arranged on the top wall of the rotating plate 4, the movable grooves 20 correspond to the movable blocks 19 one by one, second movable rods 21 are fixedly arranged on the inner side walls of the two movable grooves 20, the two second movable rods 21 respectively penetrate through the two movable blocks 19, second springs 22 are wound on the outer side walls of the two second movable rods 21, and two ends of the second springs 22 are respectively and fixedly arranged on the outer side walls of the movable blocks 19 and the inner side walls of the movable grooves 20, the second spring 22 pushes the movable block 19 and the push rod 18 to move to a side away from the stopper 13 by restoring its own elastic force.

An annular baffle plate 23 is fixedly mounted on the outer side wall of the bottom end of the rectangular rod 10, and an annular connecting groove 24 matched with the annular baffle plate 23 is formed in the outer side wall of the bottom end of the rectangular groove 12, so that the sealing property of the rectangular rod 10 connected with the rotating plate 4 is improved, and liquid can be prevented from entering the rectangular groove 12 at will.

The top of installation pipe 3 is equipped with the through-hole, and changes in the top of board 4 extends to the through-hole, and the top threaded connection of installation pipe 3 has the seal cap 25 of mutually supporting with the through-hole, has seted up recess 26 on the roof of seal cap 25, and fixed mounting has lug 27 on the inside wall of recess 26, and lug 27 is located recess 26, is convenient for rotate seal cap 25.

An annular cover plate 28 is fixedly mounted on the outer side wall of the top end of the sealing top cover 25, and an annular placing groove 29 matched with the annular cover plate 28 is formed in the inner side wall of the top end of the through hole, so that the sealing performance of the sealing cover plate 25 and the installation pipe 3 is improved.

In the invention, the top end of the rectangular rod 10 is inserted into the corresponding rectangular groove 12, after the annular baffle plate 23 is tightly attached to the bottom wall of the rotating plate 4, the first spring 16 pushes one end of the limiting block 13 to move into the corresponding limiting groove 17 due to the restoration of the elasticity of the first spring, so that the limiting block 13, the rectangular rod 10 and the drill bit 11 can be fixedly arranged on the rotating plate 4 and the mounting pipe 3, and the driving motor drives the rotating rod 6 to drive the first bevel gear 7, the second bevel gear 8, the rotating plate 4, the rectangular rod 10 and the drill bit 11 to rotate; the sealing top cover 25 is rotated out from the top end of the installation pipe 3, then the movable block 19 is pushed to drive the push rod 18 to push the limiting block 13 to the outer side of the limiting groove 17, and the limiting block 13, the rectangular rod 10 and the drill bit 11 can be detached from the rotating plate 4 and the installation pipe 3.

Further, unless otherwise specifically stated or limited, the above-described fixed connection is to be understood in a broad sense, and may be, for example, welded, glued, or integrally formed as is conventional in the art.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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.