CN209551252U - Perforating device and fuel tank punch device - Google Patents

Abstract

The utility model discloses a kind of perforating device and fuel tank punch device, the perforating device includes cutter fixation member, quill, sealing ring and fixing seat；The quill is set in outside the cutter fixation member, and is flexibly connected with the cutter fixation member；The seal ring set is located on the quill outer peripheral surface；The fixing seat is provided with accommodating chamber, and the first end that the quill runs through the cavity wall of the accommodating chamber, the sealing ring and the quill and the accommodating chamber is formed with first fluid accommodating chamber；The second end of the cavity wall of the sealing ring and the quill and the accommodating chamber is formed with second fluid accommodating chamber.The perforating device of the utility model has the advantages of cutting more convenient, safety, cutting efficiency height and long service life.

Description

Perforating device and fuel tank punch device

Technical field

The utility model relates to automated production equipment technical fields more particularly to the punching of a kind of perforating device and fuel tank to set It is standby.

Background technique

The fast development of automobile industry has pushed the expansion of the parts industry pace of product renewal and market scale. Fuel tank of vehicle is the full name of automotive oil tank, is the key component of fuel oil supply system, and major function is storage fuel oil.When Before, with the development of the automobile industry with the development of domestic automobile industry, demand of major automobile production enterprise to fuel tank of vehicle In the trend of rising appreciably.

In automotive oil tank process of manufacture, generally require to carry out punching processing, in the prior art, perforating device to fuel tank Including driving device and cutter, perforating device is connected through a screw thread with cutter, drives cutter to carry out fuel tank by driving device Punching supports cutter on fuel tank, to beat fuel tank by manually perforating device being driven to exert a force towards fuel tank when punching Hole, thus production efficiency is low.

Utility model content

The technical issues of the utility model solves is to provide a kind of perforating device of high production efficiency and fuel tank punching is set It is standby.

On the one hand, the utility model provides a kind of perforating device comprising:

Cutter fixation member；

Quill is set in outside the cutter fixation member, and is flexibly connected with the cutter fixation member；

Sealing ring, the seal ring set are located on the quill outer peripheral surface；

Fixing seat, is provided with accommodating chamber, and the quill runs through the accommodating chamber, the sealing ring and the movable sleeve The first end of the cavity wall of cylinder and the accommodating chamber is formed with first fluid accommodating chamber；The sealing ring and the quill and institute The second end for stating the cavity wall of accommodating chamber is formed with second fluid accommodating chamber；

When filling fluid to the first fluid accommodating chamber, the quill drives the cutter fixation member towards first Direction movement；

When filling fluid to the second fluid accommodating chamber, the quill drives the cutter fixation member court and institute State the opposite second direction movement of first direction.

Preferably, the perforating device further include:

First Limit Bearing is set in the outer peripheral surface of the cutter fixation member；The quill is set in described The outer peripheral surface of one Limit Bearing；The cutter fixation member is connected by first Limit Bearing and the quill activity It connects；

First limit base is connected with the cutter fixation member, and abuts against with the inner ring of first Limit Bearing, uses In the relative motion for the inner ring and the cutter fixation member for hindering first Limit Bearing；

Second limit base is connected with the quill, for hindering the outer ring of first Limit Bearing and the work The relative motion of moving sleeve.

Preferably, the perforating device further include:

Second Limit Bearing is set in the outer peripheral surface of the cutter fixation member；The quill is set in described The outer peripheral surface of two Limit Bearings；Second Limit Bearing is set side by side with first Limit Bearing；

Spacing collar；It is set in the outer peripheral surface of the cutter fixation member；The quill is set in the limit sleeve The outer peripheral surface of cylinder；The spacing collar is between first Limit Bearing and second Limit Bearing.

Preferably, the fixing seat is provided with the first connector and the second connector；First connector and the first fluid Connection is connected with the second fluid accommodating chamber in accommodating chamber conducting connection, second connector.

Preferably, the perforating device further include:

Articulating members；

Rotary drive mechanism is sequentially connected with the articulating members；The rotary drive mechanism drives the activity Connecting component rotation, so that the cutter fixation member be driven to rotate.

Preferably: the first end of the cutter fixation member is provided with to be set along cutter fixation member length direction extension The first end of the guide groove set, the cutter fixation member is plugged in the articulating members, the cutter fixation member Second end be provided with cutter fixed part；The first end of the articulating members is provided with the guiding with guide groove cooperation Protrusion, the guide protrusions are plugged in the guide groove.

Preferably, the quantity of the guide groove is several, several described guide grooves are about the cutter fixation member Axial line be symmetrical arranged.

Preferably, the cutter fixation member includes:

The first end of cutter fixing axle, the cutter fixing axle is flexibly connected with the articulating members, the cutter The second end of fixing axle is provided with fixing groove；The cross section of the notch of the fixing groove to the fixing groove slot bottom cross section It is gradually reduced；

Fixing sleeve is at least partly plugged in the fixing groove, the slot of the outer peripheral surface of the fixing sleeve and the fixing groove Wall offsets, and the fixation hole for plugging for cutter is provided in the fixing sleeve.

Preferably, the fixing sleeve is provided with limiting slot, and the second end of the cutter fixing axle is plugged in the limiting slot It is interior.

On the other hand, the utility model also provides a kind of fuel tank punch device, including perforating device, and the perforating device is The above-mentioned described in any item perforating devices of first aspect.

In conclusion in perforating device provided by the utility model and fuel tank punch device, due to the perforating device packet Include cutter fixation member, quill, sealing ring and fixing seat；The quill is set in outside the cutter fixation member, And it is flexibly connected with the cutter fixation member；The seal ring set is located on the quill outer peripheral surface；The fixing seat It is provided with accommodating chamber, the quill runs through the accommodating chamber, the sealing ring and the quill and the accommodating chamber The first end of cavity wall be formed with first fluid accommodating chamber；The cavity wall of the sealing ring and the quill and the accommodating chamber Second end be formed with second fluid accommodating chamber.Fluid, the quill band are filled to the first fluid accommodating chamber when work It moves the cutter fixation member to move towards first direction, i.e., the described cutter fixation member is towards cutting target movement, to cutting mesh Mark is cut；Fluid is filled to the second fluid accommodating chamber after cutting is completed, the quill drives the cutter solid Determine component to move towards second direction opposite to the first direction, because without the movement perforating device, cutting is more convenient, Safety, cutting efficiency height and long service life.

Detailed description of the invention

Fig. 1 is the structural schematic diagram for the preferred embodiment that the utility model perforating device removes after cutter.

Fig. 2 is the structural schematic diagram at another visual angle of Fig. 1.

Fig. 3 is the cross-sectional view of Fig. 1.

Fig. 4 is the enlarged drawing of a-quadrant shown in Fig. 3.

Fig. 5 is the enlarged drawing of B area shown in Fig. 3.

Specific embodiment

The utility model is described in detail with reference to the accompanying drawings and examples.It should be noted that if do not conflicted, Each feature in the utility model embodiment and embodiment can be combined with each other, the protection scope of the utility model it It is interior.

Fig. 1 to Fig. 5 is please referred to, the utility model provides a kind of perforating device comprising articulating members 1, cutter Fixation member 2, rotary drive mechanism 3 and cutter (being shown in figure), the cutter fixation member 2 and the articulating members 1 is flexibly connected, and can move along the length direction of the articulating members 1.The rotary drive mechanism 3 and the activity Connecting component 1 is sequentially connected；The rotary drive mechanism 3 drives the articulating members 1 to rotate, to drive the cutter Fixation member 2 rotates.The cutter is connected with the cutter fixation member 2.

Preferably, the first end of the cutter fixation member 2 is provided with extends along 2 length direction of cutter fixation member The guide groove a of setting, the first end of the cutter fixation member 2 are plugged in the articulating members 1, and the cutter is fixed The second end of component 2 is provided with cutter fixed part.The first end of the articulating members 1 is provided with matches with the guide groove a The guide protrusions b of conjunction, the guide protrusions b are plugged in the guide groove a.Pass through the guide protrusions b and the guide groove a Cooperation be relatively convenient for so as to adjust the depth that the cutter fixation member 2 is inserted into the articulating members 1 as needed It uses, and can also preferably ensure that the positioning accuracy of the cutter fixation member 2, preferably avoid because of the movement knife Has fixation member 2, so that the problem of the positioning accuracy difference of the cutter fixation member 2.

It is understood that in one embodiment, the cross section of the first end of the cutter fixation member 2 is in ellipse Shape, the first end inner wall of the articulating members 1 are adapted with the shape of the first end of the cutter fixation member 2.Cause This, the shape and structure of the cutter fixation member 2 and the articulating members 1 are not specifically limited herein, as long as described Cutter fixation member 2 is flexibly connected with the articulating members 1, and can be along the length direction of the articulating members 1 Movement.Preferably, the quantity of the guide groove a is several, several described guide groove a are about the cutter fixed part The axial line of part 2 is symmetrical arranged, thus when the articulating members 1 drive the cutter fixation member 2 to rotate, the work Connection between rotation connection part 1 and the cutter fixation member 2 is more firm, preferably avoids 1 band of articulating members The problem of being twisted off when moving the cutter fixation member 2 rotation.

Preferably, the cutter fixation member 2 includes cutter fixing axle 21 and fixing sleeve 22, the cutter fixing axle 21 First end is provided with the guide groove a, and the first end of the cutter fixing axle 21 is flexibly connected with the articulating members 1, The second end of the cutter fixing axle 21 is provided with fixing groove 211, the cross section of the notch of the fixing groove 211 to the fixation The cross section of the slot bottom of slot 211 is gradually reduced.The fixing sleeve 22 is at least partly plugged in the fixing groove 211, described solid Surely the outer peripheral surface of set 22 and the cell wall of the fixing groove 211 offset, and are provided in the fixing sleeve 22 for plugging for cutter Fixation hole 221, the shape of the cutter outer peripheral surface is adapted with the shape of the fixation hole 221.In the present embodiment, described Cutter fixed part is the fixation hole 221.It is understood that in one embodiment, no setting is required the fixing sleeve 22, institute Cutter is stated directly to be arranged in the second end for being fixed on the cutter fixing axle 21.The cutter is used to cut cutting target It cuts.Wherein, the cutting target may include automotive oil tank etc., it is to be understood that the cutting target is not done specifically herein It limits.

Since the cross section of slot bottom of cross section to the fixing groove 211 of the notch of the fixing groove 211 is gradually reduced, It is thus not only convenient for cutter to be inserted into the fixation hole 221, and cutter is made more reliably to be connected with the fixing sleeve 22.Preferably Ground, the fixing sleeve 22 are elastomer, thus not only preferably convenient for assembly, but also fixation is more reliable.In the present embodiment, institute Stating cutter fixing axle 21 is metalwork, and the fixing sleeve 22 is rubber sleeve.It is understood that the cutter fixing axle 21 and solid Surely the material of set 22 and structure are not specifically limited herein.

Preferably, the fixing sleeve 22 is provided with limiting slot 222, and the notch of the limiting slot 222 is solid towards the cutter The second end of dead axle 21 is arranged, and the second end of the cutter fixing axle 21 is plugged in the limiting slot 222, thus described in assembly It preferably avoids the fixing sleeve 22 to be fully sunk in the fixing groove 211 when cutter, and preferably avoids because of the fixing sleeve 22 deformations are so that the problem of being not easy to assembly cutter.

Preferably, the articulating members 1 include the first connecting shaft 11, and first connecting shaft 11 is provided with jack 111, the first end of 111 hole wall of jack is provided with the guide protrusions b with guide groove a cooperation.It is understood that It is that in one embodiment, the guide protrusions b may also be arranged on the endface of first connecting shaft 11.In another reality It applies in example, the guide protrusions b is detachably connected with first connecting shaft 11.Therefore, the structure of first connecting shaft 11 It is not specifically limited herein.

Preferably, the perforating device further includes fixing seat 41 and first bearing 42, and the fixing seat 41 is provided with receiving The accommodating hole 410 of the articulating members 1, the first end of the articulating members 1 are plugged in the accommodating hole 410, The second end of the articulating members 1 is located at outside the fixing seat 41.The first bearing 42 is plugged in the accommodating hole 410 It is interior, and be set on the articulating members 1.By the fixing seat 41 and first bearing 42 to the articulating members 1 is fixed, thus the cutting accuracy for the cutter being fixed in the cutter fixation member 2 can be improved, and preferably avoids cutting During cutting, the problem of leading to low precision because of shaking.

Preferably, the perforating device further includes second bearing 43 and abutment sleeve 44, and the second bearing 43 is plugged in It in the accommodating hole 410, and is set on the articulating members 1, the first bearing 42 and the second bearing 43 are simultaneously Column setting.The abutment sleeve 44 is plugged in the accommodating hole 410, and is set on the articulating members 1, described fixed Position sleeve 44 is positioned at the first bearing 42 and the second bearing 43 between, the first end of the abutment sleeve 44 and described the One bearing 42 abuts against, and the second end of the abutment sleeve 44 is abutted against with the second bearing 43, it is thus possible to preferably be limited The fixed articulating members 1, avoid the articulating members 1 from shaking.

Preferably, the perforating device further includes fixed lid 45, and the second end of the articulating members 1 is through described solid Determine lid 45, the fixed lid of lid 45 is located at the aperture of described 410 one end of accommodating hole, and is offseted with the first bearing 42, It is thus not only fixed relatively firm, but also relatively production efficiency is improved convenient for assembly.

Preferably, the rotary drive mechanism 3 includes stepper motor 31, belt 32, first pulley 33 and the second belt wheel 34, The belt 32 is set on the first pulley 33 and second belt wheel 34, the first pulley 33 and second belt wheel 34 are set side by side, and the first pulley 33 is set in the shaft of the stepper motor 31, and second belt wheel 34 is set in institute It states on articulating members 1, the stepper motor 31 is set side by side with the fixing seat 41, thus structure is compacter, applied field Scape is wider.

Preferably, the perforating device further includes quill 51 and sealing ring 52, and the quill 51 is set in institute It states outside cutter fixation member 2, and is flexibly connected with the cutter fixation member 2.The sealing ring 52 is set in the movable sleeve On 51 outer peripheral surfaces of cylinder.The fixing seat 41 is provided with accommodating chamber 411, and the quill 51 runs through the accommodating chamber 411, described The first end of the cavity wall of sealing ring 52 and the quill 51 and the accommodating chamber 411 is formed with first fluid accommodating chamber 412. The second end of the sealing ring 52 and the quill 51 and the cavity wall of the accommodating chamber 411 is formed with second fluid accommodating chamber 413.When filling fluid to the first fluid accommodating chamber 412, the quill 51 drives 2 court of cutter fixation member First direction movement.When filling fluid to the second fluid accommodating chamber 413, the quill 51 drives the cutter solid Determine component 2 to move towards second direction opposite to the first direction.

As being moved by quill 51 described in fluid forces, to push the cutter fixation member 2, and then with moving knife Tool movement, thus it is less likely to be damaged cutter when cutting.That is, passing through the stepper motor 31 and fluid cooperation control institute It states cutter to be cut, thus is not only convenient for using and high production efficiency and long service life.Wherein, the fluid can be with It is gas or oil etc., is not specifically limited herein.

Preferably, the perforating device further includes the first sealing ring 53 and the second sealing ring 54, first sealing ring 53 Be set on the quill 51 with second sealing ring 54 and be located at 52 position of sealing ring it is opposite two Side, first sealing ring 53 and the second sealing ring 54 are abutted with the quill 51 and 41 elasticity of the fixing seat, institute It states the first sealing ring 53 and the end face of the first fluid accommodating chamber 412 is provided with first annular groove 531, described second Sealing ring 54 is provided with second annular groove 541 towards the end face of the second fluid accommodating chamber 413.

By the way that the first annular groove 531 is arranged, when the fluid motion in the first fluid accommodating chamber 412 is described in When in first annular groove 531, the cell wall of the first annular groove 531 is expanded towards the fixing seat 41, thus can hinder institute The fluid for stating first fluid accommodating chamber 412 is moved towards the second fluid accommodating chamber 413.Similarly, when the second fluid accommodates When in the fluid motion to the second annular groove 541 in room 413, the cell wall of the second annular groove 541 is towards described solid Reservation 41 expands, thus the fluid of the second fluid accommodating chamber 413 can be hindered to move towards the first fluid accommodating chamber 412, Thus preferably avoid gas leakage.

Preferably, the perforating device further includes the first Limit Bearing 55, the first limit base 56 and the second limit base 57, institute State the outer peripheral surface that the first Limit Bearing 55 is set in the cutter fixation member 2.The quill 51 is set in described first The outer peripheral surface of Limit Bearing 55.The cutter fixation member 2 is living by first Limit Bearing 55 and the quill 51 Dynamic connection.It is understood that in one embodiment, no setting is required first Limit Bearing 55, the first limit base 56 and Second limit base 57, the cutter fixation member 2 are directly flexibly connected with the quill 51.

First limit base 56 is connected with the cutter fixation member 2, and the inner ring with first Limit Bearing 55 It abuts against, for hindering the inner ring of first Limit Bearing 55 and the relative motion of the cutter fixation member 2.Described second Limit base 57 is connected with the quill 51, for hindering the outer ring of first Limit Bearing 55 and the quill 51 Relative motion.That is, the outer ring of second limit base 57 and first Limit Bearing 55 directly abuts against, or Person is directly abutted against by the outer ring of middleware and first Limit Bearing 55, is not specifically limited herein.Pass through the first limit Cooperation between position bearing 55, the first limit base 56 and the second limit base 57, thus preferably avoid the cutter fixation member 2 It shakes.In originally implementing, second limit base 57 is set in the cutter fixation member 2, second limit base 57 Inner wall at be provided with the card slot 571 of annular, the card slot 571 is inserted with flexible fastening circle 58, the flexible fastening circle 58 It is abutted with the periphery surface elastic of the cutter fixation member 2, thus preferably ensure that the positioning accurate of the cutter fixation member 2 Degree.

Preferably, the perforating device further includes the second Limit Bearing 591 and spacing collar 592, second limit shaft 591 outer peripheral surfaces for being set in the cutter fixation member 2 are held, the quill 51 is set in second Limit Bearing 591 Outer peripheral surface, second Limit Bearing 591 is set side by side with first Limit Bearing 55.The spacing collar 592 is arranged In the outer peripheral surface of the cutter fixation member 2, the quill 51 is set in the outer peripheral surface of the spacing collar 592, described Spacing collar 592 preferably avoids described between first Limit Bearing 55 and second Limit Bearing 591 Cutter fixation member 2 is shaken.

Preferably, the fixing seat 41 is provided with the first connector 61 and the second connector 62, first connector 61 with it is described The conducting connection of second fluid accommodating chamber 413, second connector 62 are connected with the first fluid accommodating chamber 412 conducting.Pass through First connector 61 and the second connector 62 are connect with external fluid input control device, because more easy to use.It can manage Solution, in one embodiment, no setting is required first connector 61 and the second connector 62, the fluid input control device It is inserted directly into the first fluid accommodating chamber 412 and the second fluid accommodating chamber 413.When work, the fluid input control Device processed is filled with fluid to the first fluid accommodating chamber 412, makes the tool motion to the target location of cutting target, so The stepper motor 31 drives the cutter to rotate afterwards, makes described to cut the cutting target.After cutting, institute It states fluid input control device and is filled with fluid to the second fluid accommodating chamber 413, make the cutter towards far from the cutting mesh The movement of target direction, can complete to be cut.

The utility model also provides a kind of fuel tank punch device, including perforating device and fluid input control device, described Fluid input control device and the conducting of the first fluid accommodating chamber 412 and the second fluid accommodating chamber 413 connect, described Perforating device is perforating device described in any of the above-described embodiment.Due to the fuel tank punch device perforating device with it is any of the above-described The structure of perforating device described in embodiment is identical, therefore, also has identical technical effect, details are not described herein for structure.

In conclusion in perforating device provided by the utility model and fuel tank punch device, due to the perforating device packet Include cutter fixation member 2, quill 51, sealing ring 52 and fixing seat 41；It is solid that the quill 51 is set in the cutter Determine outside component 2, and is flexibly connected with the cutter fixation member 2；The sealing ring 52 is set in 51 periphery of quill On face；The fixing seat 41 is provided with accommodating chamber 411, and the quill 51 runs through the accommodating chamber 411, the sealing ring 52 First fluid accommodating chamber 412 is formed with the first end of the quill 51 and the cavity wall of the accommodating chamber 411；The sealing The second end of the cavity wall of ring 52 and the quill 51 and the accommodating chamber 411 is formed with second fluid accommodating chamber 413.Work When to the first fluid accommodating chamber 412 fill fluid, the quill 51 drives the cutter fixation member 2 towards first direction Movement, i.e., the described cutter fixation member 2 is towards cutting target movement, to cut to cutting target；To institute after cutting is completed State second fluid accommodating chamber 413 and fill fluid, the quill 51 drive the cutter fixation member 2 towards with the first party It is moved to opposite second direction, because without the movement perforating device, cutting is more convenient, and safety, cutting efficiency is high and makes It is long with the service life.

Perforating device provided by the utility model and fuel tank punch device are described in detail above, answered herein The principles of the present invention and embodiment are expounded with specific case, the explanation of above example is only intended to sides Assistant solves the method and its core concept of the utility model；At the same time, for those skilled in the art is practical new according to this The thought of type, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification is only this The embodiment of utility model, therefore it does not limit the scope of the patent of the utility model, all to utilize the utility model specification And equivalent structure or equivalent flow shift made by accompanying drawing content, it is applied directly or indirectly in other relevant technical fields, It is also included in the patent protection scope of the utility model.It should not be construed as a limitation of the present invention.

Claims (10)

1. a kind of perforating device characterized by comprising

Cutter fixation member；

Quill is set in outside the cutter fixation member, and is flexibly connected with the cutter fixation member；

Sealing ring, the seal ring set are located on the quill outer peripheral surface；

Fixing seat, is provided with accommodating chamber, the quill run through the accommodating chamber, the sealing ring and the quill and The first end of the cavity wall of the accommodating chamber is formed with first fluid accommodating chamber；The sealing ring and the quill and the appearance The second end of cavity wall of chamber received is formed with second fluid accommodating chamber；

When filling fluid to the first fluid accommodating chamber, the quill drives the cutter fixation member towards first direction Movement；

When filling fluid to the second fluid accommodating chamber, the quill drives the cutter fixation member towards with described the One contrary second direction movement.

2. perforating device according to claim 1, which is characterized in that the perforating device further include:

First Limit Bearing is set in the outer peripheral surface of the cutter fixation member；The quill is set in first limit The outer peripheral surface of position bearing；The cutter fixation member is flexibly connected by first Limit Bearing with the quill；

First limit base is connected with the cutter fixation member, and abuts against with the inner ring of first Limit Bearing, for hindering Hinder the inner ring of first Limit Bearing and the relative motion of the cutter fixation member；

Second limit base is connected with the quill, for hindering the outer ring of first Limit Bearing and the movable sleeve The relative motion of cylinder.

3. perforating device according to claim 2, which is characterized in that the perforating device further include:

Second Limit Bearing is set in the outer peripheral surface of the cutter fixation member；The quill is set in second limit The outer peripheral surface of position bearing；Second Limit Bearing is set side by side with first Limit Bearing；

Spacing collar；It is set in the outer peripheral surface of the cutter fixation member；The quill is set in the spacing collar Outer peripheral surface；The spacing collar is between first Limit Bearing and second Limit Bearing.

4. perforating device according to any one of claims 1 to 3, which is characterized in that the fixing seat is provided with first and connects Head and the second connector；Connection, second connector and described second are connected with the first fluid accommodating chamber for first connector The conducting connection of fluid containment room.

5. perforating device according to any one of claims 1 to 3, which is characterized in that the perforating device further include:

Articulating members；

Rotary drive mechanism is sequentially connected with the articulating members；The rotary drive mechanism drives the flexible connection Component rotation, so that the cutter fixation member be driven to rotate.

6. perforating device according to claim 5, it is characterised in that: the first end of the cutter fixation member is provided with edge The extended guide groove of the cutter fixation member length direction, the first end of the cutter fixation member are plugged in the work In rotation connection part, the second end of the cutter fixation member is provided with cutter fixed part；The first of the articulating members End is provided with the guide protrusions with guide groove cooperation, and the guide protrusions are plugged in the guide groove.

7. perforating device according to claim 6, which is characterized in that the quantity of the guide groove is several, several The guide groove is symmetrical arranged about the axial line of the cutter fixation member.

8. perforating device according to claim 5, which is characterized in that the cutter fixation member includes:

The first end of cutter fixing axle, the cutter fixing axle is flexibly connected with the articulating members, and the cutter is fixed The second end of axis is provided with fixing groove；The cross section of the notch of the fixing groove to the fixing groove slot bottom cross section gradually Reduce；

Fixing sleeve is at least partly plugged in the fixing groove, the cell wall phase of the outer peripheral surface of the fixing sleeve and the fixing groove It supports, the fixation hole for plugging for cutter is provided in the fixing sleeve.

9. perforating device according to claim 8, which is characterized in that the fixing sleeve is provided with limiting slot, the cutter The second end of fixing axle is plugged in the limiting slot.

10. a kind of fuel tank punch device, including perforating device, which is characterized in that the perforating device is claim 1 to 9 times Perforating device described in one.