CN208304073U - Tapping machine - Google Patents

Abstract

The utility model discloses a kind of tapping machines, it is related to threading apparatus field, its key points of the technical solution are that including rack, rotation connection vertical shaft on the rack, being arranged on the rack and provide the power device of power for vertical shaft, be arranged on the rack for the Workpiece clamping device to Workpiece clamping；The bottom end of the vertical shaft is provided with screw tap fixture, and the screw tap for carrying out tapping to workpiece is plugged on screw tap fixture；The lifting device for promoting vertical shaft is provided on the vertical shaft；The Workpiece clamping device includes the locating rack positioned to workpiece；It further include the screw tap storage device being arranged in locating rack, the screw tap storage device includes the admission extinguisher in locating rack and the accommodating groove for being provided with admission extinguisher top；The accommodating groove is corresponding up and down with the screw tap position.The problem of the utility model solves screw tap and is easy gouge in dropping process, and Tapping Quality is caused to decline, stores screw tap using admission extinguisher, can be avoided screw tap gouge, to improve Tapping Quality.

Description

Tapping machine

Technical field

The utility model relates to Tapping Technology fields, more specifically, it is related to a kind of tapping machine.

Background technique

In the prior art, people process the processing method usually using traditional center lathe, process to bush whorl In need manual handling, and needing screw tap and the workpiece of being loaded that stop, not only can not achieve Continuous maching, but also card engaging workpiece Tapping is time-consuming and laborious and efficiency is lower, and human cost is excessively high, does not have good economy.

To solve the above problems, the Chinese utility model patent text that Authorization Notice No. is CN203265809U in the prior art A kind of tapping machine, including rack, power device, transmission mechanism, Workpiece clamping device, cooling device, control plane are disclosed in part Plate, the Workpiece clamping device clamp workpiece, and the power device is motor and drives screw tap work, institute by transmission mechanism Stating transmission mechanism includes transmission original part sprocket wheel, chain, crossbeam vertical shaft, gear and vertical shaft；The power device passes through sprocket wheel and chain Item and crossbeam vertical shaft are sequentially connected, and uniformly assembly two lateral bevel gears, the transverse direction bevel gear are being hung down on the crossbeam vertical shaft Histogram has gear wheel to longitudinal bevel gear, the coaxial assembly in the longitudinal direction bevel gear lower part is engaged with, and the vertical shaft is symmetrically distributed in Pinion gear on the gear wheel two sides and vertical shaft is engaged with gear wheel, and the vertical shaft lower end is equipped with screw tap fixture；It is described Vertical shaft, which is equipped with, promotes trailing arm, and the promotion trailing arm is connected with the footrest by link mechanism；The control panel is opened by power Close, cooling switch and indicator lamp groups at.

After the completion of to sleeve tapping, screw tap nature of taking advantage of a situation is fallen this tapping machine in the prior art, and falls in cooling In water accumulator tank, it when screw tap is fallen under in cooling water accumulator tank, can collide with cooling water accumulator tank, be easy gouge screw tap On external screw thread, cause screw tap it is subsequent to workpiece carry out tapping when, Tapping Quality decline.

Utility model content

In view of the deficienciess of the prior art, can be prevented the purpose of this utility model is to provide a kind of tapping machine Gouge when screw tap falls, to improve Tapping Quality.

To achieve the above object, the utility model provides following technical solution: a kind of tapping machine, including rack, rotation Connection vertical shaft on the rack is arranged on the rack and provides the power device of power for vertical shaft, is arranged on the rack for work The Workpiece clamping device that part clamps；The bottom end of the vertical shaft is provided with screw tap fixture, is plugged on screw tap fixture for workpiece Carry out the screw tap of tapping；The lifting device for promoting vertical shaft is provided on the vertical shaft；The Workpiece clamping device includes pair The locating rack that workpiece is positioned；It further include the screw tap storage device being arranged in locating rack, the screw tap storage device includes Admission extinguisher in locating rack and the accommodating groove for being provided with admission extinguisher top；The accommodating groove with it is right above and below the screw tap position It answers.

By using above-mentioned technical proposal, when carrying out tapping to workpiece, start power device first, power device is vertical Axis provides power, and vertical shaft is started turning, then lifted vertical shaft using lifting device, by piece-holder on work locating rack, then Screw tap is mounted on screw tap fixture, lifting device is unclamped, vertical shaft is made to fall under the effect of gravity, is located at vertical shaft bottom end screw tap card Screw tap on tool is contacted with workpiece, is driven screw tap rotation by the vertical shaft of power device driving, is carried out tapping to workpiece, tapping finishes Afterwards, screw tap take advantage of a situation the admission extinguisher top fallen into locating rack accommodating groove in；Using be located at workpiece below and with screw tap position It sets corresponding accommodating groove to store the screw tap to fall after the completion of tapping, can be avoided screw tap and sent out in dropping process with rack Life is collided with, and the external screw thread on screw tap can be prevented by gouge, to improve Tapping Quality when screw tap reuses.

The utility model is further arranged to: the screw tap storage device further includes turning with what storage trench bottom was fixedly connected Moving axis, is set in the torsional spring of rotation axis one end at the ejection piece for being fixed on locating rack and being located at admission extinguisher side；The rotation axis Be rotatablely connected with the two sides of locating rack, and one end of rotation axis is installed with fixed block, one end of the torsional spring and locating rack it is outer Wall is fixedly connected, and the other end is fixedly connected with fixed block.

By using above-mentioned technical proposal, when screw tap is fallen into accommodating groove, admission extinguisher, admission extinguisher are pushed using ejection piece The rotation axis of bottom end rotates on the two sides of positioning plate, because one end of torsional spring is fixed, fixed the consolidating on the rotating shaft of the other end Determine on block, so torsional spring, which is fixed on one end on fixed block, shrinks torsional spring, and admission extinguisher is directed away from top when rotation axis rotation The side inclination of part shrinks ejection piece, admission extinguisher is no longer influenced by top when operator takes out the screw tap in accommodating groove out The power that part applies out, torsional spring restore to the original state, and torsional spring drives rotation axis to rotate on locating rack, and admission extinguisher is made to keep vertical shape again State.

The utility model is further arranged to: the consolidating close to ejection piece side positioned at admission extinguisher is installed on the locating rack Fixed board, the fixed plate are contacted close to the side of admission extinguisher with side wall of admission extinguisher when vertical.

By using above-mentioned technical proposal, a side contacts of side and fixed plate when admission extinguisher is vertical can prevent torsional spring When reinstatement, elastic force is larger, and admission extinguisher is made to swing to the side of ejection piece, without keeping vertical state, no longer has storage double The function of cone.

The utility model is further arranged to: the accommodating groove circular design, and the axis direction and screw tap of accommodating groove Axis direction it is identical.

By using above-mentioned technical proposal, accommodating groove is arranged to circle, and makes the axis direction and screw tap of accommodating groove Axis direction is identical, when screw tap falls naturally, can just fall into accommodating groove；Circular accommodating groove can be improved screw tap and fall into receipts Receive the precision of slot.

The utility model is further arranged to: the top of the admission extinguisher offer with accommodating groove inside be connected to it is horn-like Blanking hole, the blanking hole bottom end is thinner, and upper end is thicker.

By using above-mentioned technical proposal, screw tap may shift during the falling process, blanking hole is arranged on End is thicker, and bottom end is thinner horn-like, and blanking hole is made to have certain gradient, can be convenient for the screw tap to shift with accommodating groove It slides to accommodating groove.

The utility model is further arranged to: being provided with cushion in the blanking hole and accommodating groove.

It is located at blanking hole and accommodating groove when screw tap is contacted with blanking hole and accommodating groove by using above-mentioned technical proposal Interior cushion can play good buffer function to screw tap, prevent screw tap when falling by gouge.

The utility model is further arranged to: elastic string is arranged on the locating rack, the elastic string is on locating rack Minimum altitude be higher than admission extinguisher height.

By using above-mentioned technical proposal, admission extinguisher under the action of ejection piece to side tilt, admission extinguisher to torsional spring into Row compression is set in the elastic string that the minimum altitude on locating rack and on locating rack is higher than admission extinguisher, can play to screw tap Supporting role is prevented from causing screw tap to fall from accommodating groove during inclined because of admission extinguisher, be collided with to screw tap generation；If bullet Property rope minimum altitude be lower than admission extinguisher, then admission extinguisher tilt when, elastic string admission extinguisher tilt when pressure under extend, store Cylinder continues to tilt, and the screw tap in accommodating groove can be fallen out of accommodating groove, can generate gouge to screw tap；And it is set in locating rack On position of the elastic string on locating rack be it is adjustable, the screw tap of different length can be supported, expand tapping machine Use scope.

The utility model is further arranged to: the limit plate being installed with below elastic string on the locating rack, described Height of the limit plate on locating rack is identical as the height of admission extinguisher.

By using above-mentioned technical proposal, because height of the limit plate on locating rack is identical as the height of admission extinguisher, i.e., It can prevent elastic string from falling on locating rack, height of the elastic string on positioning plate is prevented to be lower than the height of admission extinguisher, Neng Goubao The height for demonstrate,proving elastic string is higher than the height of admission extinguisher.

The utility model is further arranged to: the lifting device includes the support plate being fixedly connected with vertical shaft and support Link mechanism that plate is fixedly connected, the foot pedal being fixedly connected with link mechanism.

By using above-mentioned technical proposal, foot pedal is stepped on, makes link mechanism that support plate be driven to lift vertical shaft, works as release When foot pedal, column falls naturally under the effect of gravity, is not required to lifting and falling for manpower control vertical shaft, simple and convenient, is easy to Operation.

The utility model is further arranged to: the ejection piece refers to cylinder.

It is simple and convenient using the inclined degree of the telescopic rod control accommodating groove of cylinder by using above-mentioned technical proposal, easily In operation and it is easily controllable.

In conclusion the utility model has the advantages that compared with the prior art

(1) the utility model is arranged accommodating groove on admission extinguisher top, can attack against each other by the way that admission extinguisher is arranged in locating rack Screw tap after the completion of silk is stored, and prevents screw tap from colliding with when falling, and improves tapping matter of the screw tap in tapping again Amount；

(2) cylinder is respectively set in the two sides of admission extinguisher by the way that rotation axis is arranged in the bottom end of admission extinguisher in the utility model And torsional spring, tilt admission extinguisher using cylinder, convenient for taking out the screw tap in admission extinguisher；

(3) the utility model passes through the elastic string that the minimum altitude being arranged on locating rack is higher than admission extinguisher height, can In admission extinguisher inclination, screw tap is supported, is prevented during admission extinguisher is inclined, screw tap falls from accommodating groove and knocked Wound；

(4) the utility model passes through in the horn-like blanking hole bottom end of admission extinguisher setting and communicated inside accommodating groove, energy Enough screw taps convenient for shifting in dropping process slide to accommodating groove.

Detailed description of the invention

Fig. 1 is the overall structure axonometric drawing of embodiment；

Fig. 2 is to embody accommodating groove and the cross-sectional view made；

Fig. 3 is the portion A enlarged diagram in Fig. 2；

Fig. 4 is the portion B enlarged diagram in Fig. 3；

Fig. 5 is to embody lifting device and the axonometric drawing made.

In figure: 1, rack；11, fixing seat；2, power device；21, motor；22, driving wheel；23, upright bar；24, driven wheel； 25, belt；3, transmission device；31, pinion gear；32, rotating bar；33, gear wheel；34, spool gear；4, vertical shaft；41, screw tap card Tool；42, screw tap；43, master gear；44, sleeve；5, Workpiece clamping device；51, locating rack；52, baffle；53, through-hole；6, screw tap Storage device；61, admission extinguisher；611, blanking hole；612, cushion；613, square block；614, fixed block；615, fixed plate； 616, elastic string；617, limit plate；62, accommodating groove；63, rotation axis；64, torsional spring；65, ejection piece；651, cylinder；7, dress is promoted It sets；71, support plate；72, link mechanism；721, vertical bar；722, hinge bar；723, connecting rod；73, foot pedal.

Specific embodiment

The utility model is described in further detail with reference to the accompanying drawing.The wherein identical attached drawing of identical components Label indicates.It should be noted that word "front", "rear" used in the following description, "left", "right", "up" and "down" refer to It is the direction in attached drawing, word " bottom surface " and " top surface ", "inner" and "outside" are referred respectively to towards or away from particular elements geometry The direction at center.

Embodiment: a kind of tapping machine, referring to Fig. 1 and Fig. 2, power device 2 and transmission including rack 1, in rack 1 Device 3, two vertical shafts 4 being rotatably connected in rack 1, the Workpiece clamping device for being fixed in rack 1 and being located at 4 lower section of vertical shaft 5, the screw tap storage device 6 that is arranged in Workpiece clamping device 5 is arranged in and is respectively used to promote the two of two vertical shafts 4 in rack 1 A lifting device 7；The bottom end of vertical shaft 4 is installed with screw tap fixture 41, and the silk that tapping is carried out to workpiece is plugged on screw tap fixture 41 Cone 42；The power of power device 2 is passed to vertical shaft 4 by transmission device 3, and vertical shaft 4 rotates in rack 1, will using lifting device 7 Vertical shaft 4 lifts, and screw tap 42 is plugged on screw tap fixture 41, unclamps lifting device 7, vertical shaft 4 is under gravity under nature It falls, tapping can be carried out to workpiece, the screw tap 42 after the completion of tapping carries out storage recycling by screw tap storage device 6.

Referring to Fig. 1 and Fig. 2, the side of rack 1 is provided with fixing seat 11；Power device includes being fixed on 1 side wall of rack Motor 21, the upright bar 23 being rotatablely connected with fixing seat 11, is fixed on upright bar 23 at the driving wheel 22 being fixed on 21 output shaft of motor The driven wheel 24 on top, the belt 25 being wrapped between driving wheel 22 and driven wheel 24；Transmission device 3 includes being fixed on upright bar 23 On pinion gear 31, with the rotation connection of rack 1 and axis direction and the identical rotating bar 32 of 23 axis direction of upright bar, be fixed on turn 32 top of lever and the gear wheel 33 engaged with pinion gear 31 are fixed on spool gear of the rotating bar 32 far from 33 one end of gear wheel 34；Master gear 43 is installed on two vertical shafts 4, two master gears 43 are intermeshed with spool gear 34；The top of rack 1 is solid Equipped with two mutual corresponding sleeves 44 of vertical shaft 4, vertical shaft 4 can in sleeve 44 up and down sliding；Motor 21 drives driving wheel 22 rotations, driving wheel 22 drive driven wheel 24 to rotate by belt 25, and driven wheel 24 drives upright bar 23 to rotate, and are fixed on upright bar 23 On pinion gear 31 start to be engaged with gear wheel 33, gear wheel 33 rotate when drive rotating bar 32 rotate, 32 band of rotating bar Dynamic spool gear 34 rotates, and spool gear 34 starts to be engaged transmission with two master gears 43, and vertical shaft 4 can be 43 turns with master gear Dynamic, the screw tap 42 on screw tap fixture 41, which can be rotated, carries out tapping to workpiece.

Referring to figs. 2 and 3, Workpiece clamping device 5 includes determining for the U-shaped for being fixed in rack 1 and being positioned to workpiece Position frame 51 is fixed in locating rack 51 through-hole 53 for dividing locating rack 51 to the baffle 52 for two layers, being provided on baffle 52；Through-hole On the same line, screw tap 42 being capable of the sliding up and down in through-hole 53 for the axis direction of 53 axis direction and screw tap 42；By work Part is placed on baffle 52, and driving vertical shaft 4 drives screw tap 42 to rotate and carries out tapping to workpiece downwards, when 42 tapping of screw tap is completed Afterwards, screw tap 42 is dropped by the through-hole 53 on baffle 52 in the screw tap storage device 6 of 52 lower section of baffle.

Referring to fig. 2 and Fig. 4, in conjunction with Fig. 3, screw tap storage device 6 includes being located in locating rack 51 and being located at 52 lower section of baffle Admission extinguisher 61, be provided with 61 top of admission extinguisher accommodating groove 62, be fixed on 61 bottom of admission extinguisher and with 51 two sides of locating rack turn The rotation axis 63 of dynamic connection, is fixed on ejection of the locating rack 51 far from opening side at the torsional spring 64 for being set in 63 one end of rotation axis Part 65；Torsional spring 64 in the raw when, admission extinguisher 61 is in a vertical state and the internal diameter of torsional spring 64 is greater than the straight of rotation axis 63 Diameter；The top of admission extinguisher 61 offers horn-like blanking hole 611, and the lower end of blanking hole 611 is thin, upper end is thick, blanking hole 611 Lower end is communicated with accommodating groove 62, and blanking hole 611 can fall into accommodating groove 62 convenient for the screw tap 42 to shift in dropping process In；Cushion 612 is provided in accommodating groove 62 and blanking hole 611, cushion 612 can prevent screw tap 42 in dropping process It collides with blanking hole 611 and accommodating groove 62, prevents 42 gouge of screw tap；Locating rack 51 is installed on the side wall of torsional spring 64 Square block 613, one end of torsional spring 64 are fixed on square block 613；Fixed block 614 is installed in rotation axis 63, torsional spring 64 is separate One end of square block 613 is fixed on fixed block 614；Ejection piece 65 refers to cylinder 651, when the telescopic rod ejection of cylinder 651 with The side wall of admission extinguisher 61 contacts with each other；Side in locating rack 51 close to cylinder 651 is installed with fixed plate 615, and fixed plate 615 is leaned on It contacts with each other when the side of nearly admission extinguisher 61 and vertical admission extinguisher 61 close to the side of fixed plate 615；Fixed plate 615 can prevent 64 restoring force of torsional spring is larger, and the axis direction of the axis direction for making accommodating groove 62 and screw tap 42 is not on the same line.

Referring to fig. 2 and Fig. 4, it is arranged with elastic string 616 on locating rack 51, is provided on locating rack 51 positioned at elastic string 616 Lower section and the top limit plate 617 concordant with 61 top of admission extinguisher, limit plate 617 is U-shaped, can prevent elastic string 616 from gliding To 61 or less admission extinguisher；After the completion of 42 tapping of screw tap, when falling in accommodating groove 62 under 42 nature of screw tap, cushion 612 can Prevent screw tap 42 from colliding with blanking hole 611 and accommodating groove 62, the telescopic rod of driving cylinder 651 stretches out, and cylinder 651 stretches Bar rotates the rotation axis 63 of 61 bottom end of admission extinguisher on locating rack 51, to make admission extinguisher 61 to the side far from cylinder 651 Inclination, being set in the height on locating rack 51 and on locating rack 51 can receive higher than the elastic string 616 of 61 height of admission extinguisher When cylinder 61 of receiving tilts, the screw tap 42 being located in accommodating groove 62 is supported, operator can be from accommodating groove 62 by screw tap 42 take out.

Referring to Fig. 5, lifting device 7 includes the support plate 71 being fixedly connected below master gear 43 and with vertical shaft 4 and branch Link mechanism 72 that fagging 71 is fixedly connected, foot pedal 73；Link mechanism 72 includes two vertical bars slid in about 1 rack 721, the hinge bar 722 hinged with 721 bottom end of vertical bar, one end are fixed in rack 1 and cut with scissors in the middle part of the other end and hinge bar 722 The connecting rod 723 connect；The top of vertical bar 721 is fixedly connected with support plate 71；Foot pedal 73 is fixed on hinge bar 722 far from perpendicular One end of straight-bar 721；When stepping on foot pedal 73, hinge bar 722 is moved down close to one end of foot pedal 73, hinge bar 722 One end far from foot pedal 73 moves up, so that vertical bar 721 be driven to slide upwards in rack 1, vertical bar 721 can band Dynamic support plate 71 moves up, and support plate 71 jacks up master gear 43, because master gear 43 and vertical shaft 4 are affixed, support plate 71 Vertical shaft 4 can be propped up, slides vertical shaft 4 upwards in rack 1, and sleeve 44 can play guiding role to vertical shaft 4, work as release Foot pedal 73, vertical shaft 4 fall under the effect of gravity.

The working principle of the tapping machine is as follows: workpiece being placed on locating rack 51 first, foot pedal 73 is then stepped on, makes Vertical bar 721 lifts vertical shaft 4, and screw tap 42 is placed on screw tap fixture 41, unclamps again foot pedal 73, makes under 42 nature of screw tap It falls, when the bottom end of screw tap 42 and the upper surface of workpiece contact, vertical shaft 4 stops falling, then opens motor 21, and motor 21 drives upright bar 23 drive pinion gear 31 to rotate, and gear wheel 33 is engaged with pinion gear 31, and spool gear 34 is engaged with master gear 43, thus Start turning vertical shaft 4, the screw tap 42 on 4 bottom end screw tap fixture 41 of vertical shaft is rotatable tapping；Then it repeats above dynamic Make that the screw tap 42 and workpiece on another vertical shaft 4 are installed；When one of screw tap 42 of the tapping machine carries out tapping to workpiece, separately One is not required to screw tap 42 and the workpiece of being loaded that stop, and flexible operation is easy, and can carry out tapping to two workpiece simultaneously, improve Working efficiency；

After the completion of tapping, screw tap 42 falls (repeating no more herein for the prior art) from the through-hole 53 on baffle 52, silk Cone 42 is fallen in the accommodating groove 62 of 52 lower section of baffle, and the cushion 612 in accommodating groove 62 can prevent screw tap 42 and accommodating groove 62 inner walls collide with；The telescopic rod elongation of cylinder 651 is driven, cylinder 651 is positioning the rotation axis 63 of 61 bottom of admission extinguisher It is rotated on frame 51, torsional spring 64 is rotated close to the side of fixed block 614 with rotation axis 63, and torsional spring 64 is shunk in rotation axis 63, is received Cylinder 61 of receiving is tilted to the side far from cylinder 651, elastic string 616 on locating rack 51 can to being located in accommodating groove 62 and Inclined screw tap 42 is supported, and is prevented during admission extinguisher 61 is inclined, screw tap 42 slides from accommodating groove 62；Work as operation When personnel take out screw tap 42 from accommodating groove 62, shrink the contraction pole of cylinder 651, at this moment torsional spring 64 restores to the original state, rotation Axis 63 rotates on locating rack 51, drives admission extinguisher 61 to keep vertical state again, can store to next screw tap 42.

The above is only the preferred embodiment of the utility model, and the protection scope of the utility model is not limited merely to Above-described embodiment, technical solution belonging to the idea of the present invention belong to the protection scope of the utility model.It should refer to Out, for those skilled in the art, it is without departing from the principle of the utility model it is several improvement and Retouching, these improvements and modifications also should be regarded as the protection scope of the utility model.

Claims (10)

1. a kind of tapping machine is vertical on rack (1) including rack (1), the vertical shaft (4) being rotatably connected on rack (1), setting Axis (4) provides the power device (2) of power, is arranged on rack (1) for the Workpiece clamping device (5) to Workpiece clamping；

The bottom end of the vertical shaft (4) is provided with screw tap fixture (41), and screw tap fixture is plugged on (41) for attacking to workpiece The screw tap (42) of silk；The lifting device (7) for promoting vertical shaft (4) is provided on the vertical shaft (4)；The Workpiece clamping device (5) locating rack (51) comprising being positioned to workpiece；It is characterized by also including the screw tap being arranged in locating rack (51) receipts It receives device (6), the screw tap storage device (6) includes the admission extinguisher (61) in locating rack (51) and is provided with admission extinguisher (61) accommodating groove (62) on top；The accommodating groove (62) is corresponding up and down with the screw tap (42) position.

2. tapping machine according to claim 1, it is characterised in that: the screw tap storage device (6) further includes and accommodating groove (62) bottom is fixedly connected rotation axis (63), the ejection piece for being fixed on locating rack (51) and being located at admission extinguisher (61) side (65), it is set in the torsional spring (64) of rotation axis (63) one end；The two sides of the rotation axis (63) and locating rack (51) are rotatablely connected, And one end of rotation axis (63) is installed with fixed block (614), one end of the torsional spring (64) and the outer wall of locating rack (51) are fixed Connection, and the other end is fixedly connected with fixed block (614).

3. tapping machine according to claim 2, it is characterised in that: be installed on the locating rack (51) positioned at admission extinguisher (61) close to the fixed plate (615) of ejection piece (65) side, side and storage of the fixed plate (615) close to admission extinguisher (61) Side wall contact when cylinder (61) is vertical.

4. tapping machine according to claim 1, it is characterised in that: accommodating groove (62) circular design, and accommodating groove (62) axis direction is identical as the axis direction of screw tap (42).

5. tapping machine according to claim 1, it is characterised in that: the top of the admission extinguisher (61) offers and accommodating groove (62) the internal horn-like blanking hole (611) being connected to, blanking hole (611) bottom end is thinner, and upper end is thicker.

6. tapping machine according to claim 5, it is characterised in that: be all provided in the blanking hole (611) and accommodating groove (62) It is equipped with cushion (612).

7. tapping machine according to claim 1, it is characterised in that: elastic string (616) are arranged on the locating rack (51), Height of the elastic string (616) on locating rack (51) is higher than the height of admission extinguisher (61).

8. tapping machine according to claim 7, it is characterised in that: be installed on the locating rack (51) positioned at elastic string (616) limit plate (617) below, the height of the limit plate (617) height on locating rack (51) and admission extinguisher (61) It is identical.

9. tapping machine according to claim 1, it is characterised in that: the lifting device (7) includes and vertical shaft (4) are fixed and connected The support plate (71) that connects, the link mechanism (72) being fixedly connected with support plate (71), the foot being fixedly connected with link mechanism (72) Pedal (73).

10. tapping machine according to claim 2, it is characterised in that: the ejection piece (65) refers to cylinder (651).