CN217626559U

CN217626559U - Self-compensation floating type air blowing assembly and air blowing device of paper stack overturning collator

Info

Publication number: CN217626559U
Application number: CN202221503153.4U
Authority: CN
Inventors: 白银国
Original assignee: Dongguan Winner Printing Technology Co ltd
Current assignee: Dongguan Winner Printing Technology Co ltd
Priority date: 2022-06-16
Filing date: 2022-06-16
Publication date: 2022-10-21
Anticipated expiration: 2032-06-16

Abstract

The utility model discloses a self-compensating floating type blowing component of a paper pile turning finishing machine, which relates to the field of moving and blowing of the paper pile turning finishing machine, and comprises a blowing nozzle, a nozzle fixing seat hermetically connected with the air inlet of the blowing nozzle, a fixing plate provided with a mounting hole and an elastic device; the mounting hole is sleeved on the outer wall of the air blowing nozzle, the air blowing nozzle is provided with a propping part, one end of the elastic device props against the propping part, and the other end of the elastic device props against the fixing plate; the technical scheme also provides a blowing device, which comprises a bottom plate, a fixed frame arranged at the top of the bottom plate, a driving device arranged on the fixed frame and a blowing assembly; the bottom plate is provided with a hollow part, the blowing assembly is in transmission connection with the driving device, and the elastic device drives the blowing nozzle to be attached to the surface of the hollow part; the utility model discloses can eliminate the clearance between blowing nozzle and the honeycomb holes, consequently the wind energy that blows off in the blowing nozzle blows off from honeycomb holes without the loss to can increase the pressure and the noise abatement of wind.

Description

Self-compensation floating type blowing assembly and blowing device of paper pile overturning finishing machine

Technical Field

The utility model relates to a paper pile upset collator removes the technical field that bloies, especially relates to a paper pile upset collator self compensating floating subassembly and blast apparatus of blowing.

Background

The full-automatic paper pile turning machine can turn a paper printed matter with double-sided printing requirements for 180 degrees after the paper printed matter is piled into a paper pile after single-sided printing is finished so as to print the other side. The printing machine is not neat in paper collection during printing, paper is neat before printing to ensure printing quality, especially for double-sided printing paper, the paper is neat before second printing, and meanwhile, the paper needs to be turned over, otherwise, printing on the other side of the paper cannot be performed.

Blowing device's in current pile upset collator blowing nozzle one end lug connection to wind gap, then move through drive arrangement drive blowing nozzle, thereby make blowing nozzle remove on one side, the wind that will blow off on one side passes the honeycomb holes and blows neat or turn-ups to the paper, because honeycomb holes are in the manufacturing process, be difficult to with the flattening of whole face all preparation, so the air outlet and the honeycomb holes of generally blowing nozzle have certain clearance, thereby certain wind energy loss has, certain noise also can exist simultaneously.

Disclosure of Invention

An object of the utility model is to overcome the above-mentioned defect among the prior art, provide a paper pile upset collator self compensating floating subassembly and blast apparatus of blowing, the utility model discloses can eliminate the clearance between blowing mouth and the honeycomb holes, make the wind energy that blows off in the blowing mouth not have the lossy to blow off from honeycomb holes's surface to can increase the pressure and the noise abatement of wind.

In order to achieve the purpose, the utility model provides a self-compensating floating type blowing assembly of a paper pile turning finishing machine, which comprises a blowing nozzle, a nozzle fixing seat hermetically connected with the air inlet of the blowing nozzle, a fixing plate which is provided with a mounting hole and can move in the horizontal direction, and an elastic device; the mounting hole is sleeved on the outer wall of the air blowing nozzle, the air blowing nozzle is provided with a supporting part, one end of the elastic device is supported against the supporting part, and the other end of the elastic device is supported against the fixing plate.

When using this technical scheme, the resilient means drive blowing nozzle supports all the time and leans on the surface at the honeycomb holes of pile upset collator, improves blowing nozzle's the efficiency of blowing, and the fixed plate drives blowing nozzle and removes when moving on the horizontal direction to blowing nozzle can remove the limit and blow.

The utility model also provides a blowing device adopting the blowing component in the technical scheme, which comprises a bottom plate, a fixed frame arranged at the top of the bottom plate, a driving device arranged on the fixed frame and horizontally arranged, and a self-compensating floating type blowing component of the paper pile overturning and finishing machine; the bottom plate is provided with at least one hollow part, the hollow part is provided with honeycomb holes which are arranged at equal intervals, the blowing assembly is in transmission connection with the driving device, and the elastic device drives the blowing nozzle to be attached to the surface of the hollow part.

When using this technical scheme, drive arrangement and fixed plate fixed connection to the drive subassembly of blowing moves on the horizontal direction, and the blowing nozzle is in the removal, and the distance between blowing nozzle and the honeycomb holes is eliminated in the surface of fretwork portion to the laminating of resilient means drive blowing nozzle, thereby kills and falls this technical scheme's amount of wind loss little, has energy-concerving and environment-protective effect.

Among the above-mentioned technical scheme, the quantity of fretwork portion is two, and the parallel side by side setting, and two assemblies of blowing are connected with the drive arrangement transmission and blow two fretwork portions respectively, improve the efficiency of blowing and to the stability of blowing to the paper.

In the above technical solution, the driving device includes a motor located between the two hollow portions and located at one end of the hollow portions, a first driving wheel connected to an output shaft of the motor and located at one end of one of the hollow portions, a first driven wheel mounted on the fixed frame and located at the other end of the hollow portion, and a first belt disposed between the first driving wheel and the first driven wheel; install on the mount and be located the second of another fretwork portion one end from the driving wheel, install on the mount and be located the second action wheel of another fretwork portion other end, set up at the second from the second belt between driving wheel and the second action wheel, first from the driving wheel and the coaxial axle center rotation of second action wheel, two air-blowing components are fixed respectively on first belt and second belt, and two air-blowing components of a motor drive of being convenient for move, reduction in production cost, reduction mass weight.

Among the above-mentioned technical scheme, drive arrangement is still including installing on the mount and being used for the installation first from the mount pad of driving wheel, second action wheel and second from the driving wheel, be provided with mounting groove and mounting groove on the mount pad and arrange for the level, set up the deep groove ball bearing in the mounting groove, set up the downthehole transmission shaft in deep groove ball bearing, the transmission shaft is with first from driving wheel/second action wheel/second from driving wheel fixed connection, is convenient for install first from driving wheel, second action wheel and second from the driving wheel.

In the technical scheme, the fixed frame is provided with the slide rail and the slide block which slides on the slide rail, and the fixed plate is fixedly connected with the slide block, so that the linear motion precision of the blowing assembly is improved.

In the technical scheme, the hollow part is of a rectangular structure, and the width of the air outlet of the air blowing nozzle is larger than or equal to that of the hollow part.

Among the above-mentioned technical scheme, the mount includes that two are located the spacing strip on the long limit of fretwork portion both sides respectively, the slide rail is installed on the spacing strip that is close to drive arrangement one side, two width between the spacing strip suits with the width of blowing nozzle.

Among the above-mentioned technical scheme, still including setting up on the mount and being located the first inductor of fretwork portion one end, set up on the mount and being located the second inductor of fretwork portion other end.

Among the above-mentioned technical scheme, still including installing the shock dynamo on the mount.

Compared with the prior art, the beneficial effects of the utility model reside in that:

this technical scheme's blowing nozzle and fixed plate between be provided with resilient means, the fixed plate is portable in the horizontal direction, thereby drive blowing nozzle and move on the horizontal direction, even honeycomb holes surface on the paper pile upset collator is not very level and smooth, blowing nozzle also can laminate all the time on honeycomb holes's surface under resilient means's effect, thereby eliminate the clearance between blowing nozzle and the honeycomb holes, consequently, the wind energy that blows out in the messenger blowing nozzle does not have the loss and blows out from honeycomb holes's surface, thereby can increase the pressure and the noise abatement of wind, energy-concerving and environment-protective effect still has.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a self-compensating floating type blowing assembly of a paper pile turning finishing machine provided by the utility model;

fig. 2 is an exploded view of a self-compensating floating blowing assembly of a pile turning finisher provided by the present invention;

fig. 3 is a schematic structural diagram of an air blowing device provided by the present invention;

fig. 4 is a schematic structural view of an air blowing device provided by the present invention at another angle;

fig. 5 is an exploded view of a blowing device provided by the present invention;

fig. 6 is a partially enlarged view of a point a in fig. 5.

The reference numbers of the figures are: 1. a blowing nozzle; 11. an abutting portion; 2. a tuyere fixing seat; 3. a fixing plate; 31. mounting holes; 4. an elastic device; 5. a base plate; 51. a hollow-out section; 511. honeycomb holes; 6. a fixed mount; 61. a limiting strip; 7. a drive device; 71. a motor; 72. a first driving wheel; 73. a first driven wheel; 74. a first belt; 75. a second driven wheel; 76. a second drive wheel; 77. a second belt; 79. a mounting seat; 791. mounting grooves; 70. a deep groove ball bearing; 701. a drive shaft; 81. a slide rail; 82. a slider; 9. vibrating a motor; 10. a first inductor; 20. a second inductor.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, back \8230;) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Example one

As shown in fig. 1-2, the present embodiment provides a self-compensating floating type blowing assembly of a pile turning finisher, which includes a blowing nozzle 1, a nozzle fixing base 2, a fixing plate 3 and an elastic device 4. The elastic device 4 may be a spring, a tension spring, a compression spring, or the like, and is not limited thereto. The air nozzle fixing seat 2 is hermetically connected with an air inlet of the air blowing nozzle 1, and the fixing plate 3 is provided with a mounting hole 31 and can move in the horizontal direction. The mounting hole 31 is sleeved on the outer wall of the air blowing nozzle 1, and the elastic device 4 is arranged between the air blowing nozzle 1 and the fixing plate 3. Wherein, the air blowing nozzle 1 is provided with an abutting part 11, one end of the elastic device 4 abuts against the abutting part 11, and the other end abuts against the fixing plate 3.

Specifically, during the use, the air outlet of the air nozzle 1 is abutted against the honeycomb holes 511 on the paper pile turning finishing machine, the elastic device 4 drives the air nozzle 1 to be tightly attached to the surface of an object, then the air nozzle fixing seat 2 is connected with an external hair drier, and air can be blown out from the air outlet of the air nozzle 1. Then the fixed plate 3 can drive the air blowing nozzle 1 to move in the horizontal direction while moving horizontally, and the air blowing working range of the air blowing nozzle 1 is enlarged. The blowing assembly of this embodiment has adopted fixed plate 3 and resilient means 4, when being convenient for the installation with drive blowing nozzle 1 and remove, can also make blowing nozzle 1 hug closely all the time on the honeycomb holes 511 on the pile upset collator.

Example two

As shown in fig. 3-6, this embodiment provides a blowing device, which includes a bottom plate 5, a fixing frame 6, a driving device 7 and a floating blowing component with self-compensation function of a paper stack turnover finishing machine in the first embodiment, wherein at least one hollow part 51 is provided on the bottom plate 5, honeycomb holes 511 arranged at equal intervals are provided on the hollow part 51, the fixing frame 6 is installed on the top of the bottom plate 5, wherein two sides of the bottom plate 5 are provided with raised limiting and positioning portions, two sides of the fixing frame 6 abut against the limiting and positioning portions, so that the fixing frame 6 is conveniently installed on the top of the bottom plate 5, and in addition, the height of the limiting and positioning portions is adapted to the height of the fixing frame 6. The driving device 7 is mounted on the fixing frame 6 and is horizontally arranged. The fixed plate 3 is in transmission connection with a driving device 7, so that the driving device 7 drives the fixed plate 3 to move in the horizontal direction, and the air blowing nozzle 1 is driven to move in the horizontal direction.

Preferably, the number of the hollow parts 51 of the embodiment is two, and the two hollow parts 51 are arranged in parallel, wherein the two hollow parts 51 may be respectively located at two sides of the paper, and when the wind blows the paper from the honeycomb holes 511, the stability and efficiency of paper blowing turn-over, alignment may be improved. The number of the air blowing assemblies is also two, and the two air blowing assemblies are respectively in transmission connection with the driving device 7 and respectively blow air to the two hollow parts 51.

The driving device 7 includes a motor 71, a first driving wheel 72, a first driven wheel 73, a first belt 74, a second driven wheel 75, a second driving wheel 76, a second belt 77, a mounting seat 79, a deep groove ball bearing 70, and a transmission shaft 701. The motor 71 is located between the two hollow portions 51 and at one end of the hollow portions 51. The first driving wheel 72 is in transmission connection with an output shaft of the motor 71 and is located at one end of one of the hollow-out portions 51. The first driven wheel 73 is mounted on the fixed frame 6 and located at the other end of the hollow portion 51. The first belt 74 is disposed between the first driving pulley 72 and the first driven pulley 73; the second driven wheel 75 is mounted on the fixed frame 6 and located at one end of the other hollow portion 51, and the second driving wheel 76 is mounted on the fixed frame 6 and located at the other end of the other hollow portion 51. The second belt 77 is disposed between the second driven pulley 75 and the second driving pulley 76, wherein the mounting seat 79 of the present embodiment is used for mounting the first driven pulley 73, the second driving pulley 76, and the second driven pulley 75. The mounting seat 79 is provided with a mounting groove 791, the mounting groove 791 is horizontally arranged, the deep groove ball bearing 70 is arranged in the mounting groove 791, one end of the transmission shaft 701 is arranged in a middle hole of the deep groove ball bearing 70, and the other end of the transmission shaft 701 is fixedly connected with the first driven wheel 73/the second driving wheel 76/the second driven wheel 75. Therefore, the first driven wheel 73/the second driving wheel 76/the second driven wheel 75 can be fixed on the fixing frame 6, and the deep groove ball bearing 70 can reduce friction with the mounting groove 791 during rotation, so that the stability and the service life of the driving device 7 of the embodiment are improved. Wherein, use a transmission shaft 701 fixed connection first from driving wheel 73 and second action wheel 76, namely one end and the first driven wheel 73 fixed connection of this transmission shaft 701, the other end and second action wheel 76 fixed connection, can rotate with the axle center from driving wheel 73 and second action wheel 76 like this, be convenient for a motor 71 drive first belt 74 and second belt 77 carry on certainly to can drive two subassembly of blowing and remove. Preferably, the present embodiment further includes a driving transmission shaft 701 fixedly connected to the output shaft of the motor 71, the driving transmission shaft 701 is fixedly connected to the first driving wheel 72, and a flat key is inserted into a portion fixedly connected to the first driving wheel 72, and the flat key is attached to the inner side wall of the first driving wheel 72. In addition, a flat key is also inserted in the part where the transmission shaft 701 is fixedly connected with the first driven wheel 73/the second driving wheel 76/the second driven wheel 75, and the flat key is attached to the inner side wall of the first driven wheel 73/the second driving wheel 76/the second driven wheel 75. In operation, the motor 71 rotates to drive the first driving wheel 72 to rotate, and the first driving wheel 72 drives the first belt 74 to move, so that the blowing assembly fixed on the first belt 74 can move in the horizontal direction. The first driven pulley 73 rotates along with the rotation of the first driving pulley 72 under the action of the first belt 74. Because first driven wheel 73 and second action wheel 76 use same transmission shaft 701 to connect, then first driven wheel 73 rotates and also can drive second action wheel 76 and rotate simultaneously to drive second belt 77 and rotate, make the subassembly of blowing of fixing on second belt 77 move on the horizontal direction. The second driven pulley 75 rotates along with the rotation of the second driving pulley 76 under the action of the second belt 77. Of course, in other embodiments, the driving device 7 may also be an air cylinder, a screw rod, a linear motor, etc., and thus the invention is not limited thereto.

Preferably, the fixed frame 6 is provided with a sliding rail 81 arranged horizontally, and a sliding block 82 sliding on the sliding rail 81. Wherein, the fixed plate 3 is fixedly connected with the sliding block 82. In the process that the driving device 7 drives the fixing plate 3 to move, the fixing plate 3 is fixed with the sliding block 82 and moves on the sliding rail 81, so that the stability of the linear motion of the fixing plate 3 is improved, and the linear motion precision of the air blowing nozzle 1 is improved.

Preferably, the hollow portion 51 is rectangular, and the fixing frame 6 includes two limiting strips 61 respectively located at two sides of the long side of the hollow portion 51, wherein the diameter of the air outlet of the air nozzle 1 is greater than or equal to the width of the hollow portion 51, and the width between the two limiting strips 61 is adapted to the width of the air nozzle 1. In this way, the air blowing nozzle 1 can blow air while moving, and the limit bar 61 can limit the movement of the air blowing nozzle 1 by blowing air to the entire hollow portion 51. In addition, the slide rail 81 is provided on the stopper bar 61 on the side close to the driving device 7.

Preferably, the present embodiment further includes a first sensor 10 disposed on the limiting bar 61 and located at one end of the hollow portion 51, and a second sensor 20 disposed on the limiting bar 61 and located at the other end of the hollow portion 51. The signal output ends of the first inductor 10 and the second inductor 20 are in signal connection with the signal input end of the motor 71, and the installation of the first inductor 10 is used for controlling the stroke and the limit protection of the motor 71, so that the blowing assembly arranged on the first belt 74/the second belt 77 reciprocates between the first inductor 10 and the second inductor 20, and accidents caused by the fact that the motor 71 exceeds the stroke range are prevented.

Preferably, the present embodiment further comprises a vibration motor 9 mounted on the fixing frame 6. Wherein, the appearance size of mount 6 suits with bottom plate 5, and shock dynamo 9 is located the center of mount 6 to be located the center of bottom plate 5. The vibration motor 9 can drive the fixing frame 6 to vibrate, so as to drive the bottom plate 5 to vibrate. Therefore, the air can enter the paper more effectively, and the paper is loosened and tidied.

When in use, the air blowing nozzle 1 is always attached to the surface of the hollow part 51 under the elastic action of the elastic device 4. Then the staff installs fan and tuyere fixing base 2, then starts motor 71 for the output shaft of motor 71 drives first action wheel 72 and rotates, and the first belt 74 that the cover was established on first action wheel 72 moves under the drive of first action wheel 72, through installing the flat key in the keyway on initiative transmission shaft 701 surface, makes the extrusion of flat key and keyway side transmit torque to initiative transmission shaft 701, thereby drives first action wheel 72 and rotates. The first driven pulley 73, the second driving pulley 76 and the second driven pulley 75 are the same. The first driven pulley 73 moves to drive the second driving pulley 76, the second driven pulley 75 and the second belt 77 to move. First belt 74/second belt 77 drives fixed plate 3 when removing and removes, thereby drive blowing nozzle 1 and remove, then place the pile in the below of fretwork portion 51, supply wind through the fan, wind gets into and blows out from blowing nozzle 1 from tuyere fixing base 2, then blowing nozzle 1 passes honeycomb holes 511 and blows wind to the paper surface, thereby reach and blow away the paper and neat, drive arrangement 7 drives two subassembly of blowing and carries out reciprocating motion on two fretwork portions 51, thereby carry out reciprocal work of blowing, the efficiency of blowing has been improved.

The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all should be included in the protection scope of the present invention.

Claims

1. A self-compensating floating type blowing assembly of a paper stack overturning collator is characterized by comprising a blowing nozzle (1), a blowing nozzle fixing seat (2) hermetically connected with an air inlet of the blowing nozzle (1), a fixing plate (3) which is provided with a mounting hole (31) and can move in the horizontal direction, and an elastic device (4); the mounting hole (31) is sleeved on the outer wall of the air blowing nozzle (1), the air blowing nozzle (1) is provided with a butting part (11), one end of the elastic device (4) butts against the butting part (11), and the other end of the elastic device butts against the fixing plate (3).

2. An air blowing device, characterized by comprising a bottom plate (5), a fixing frame (6) arranged at the top of the bottom plate (5), a driving device (7) which is arranged on the fixing frame (6) and is horizontally arranged, and a self-compensating floating type air blowing component of the paper pile turning and arranging machine according to claim 1; the air blowing device is characterized in that at least one hollow-out part (51) is formed in the bottom plate (5), honeycomb holes (511) which are arranged at equal intervals are formed in the hollow-out part (51), the air blowing assembly is in transmission connection with the driving device (7), and the elastic device (4) drives the air blowing nozzle (1) to be attached to the surface of the hollow-out part (51).

3. A blowing device according to claim 2, characterised in that the number of said hollowed-out portions (51) is two, and the hollowed-out portions are arranged in parallel, and two blowing assemblies are connected with the driving device (7) in a transmission manner and respectively blow air to the two hollowed-out portions (51).

4. A blowing device according to claim 3, characterised in that the drive means (7) comprise a motor (71) located between two hollows (51) and at one end of the hollows (51), a first driving wheel (72) in driving connection with the output shaft of the motor (71) and located at one end of one of the hollows (51), a first driven wheel (73) mounted on the holder (6) and located at the other end of the hollows (51), a first belt (74) arranged between the first driving wheel (72) and the first driven wheel (73); install on mount (6) and be located second driven wheel (75) of another fretwork portion (51) one end, install on mount (6) and be located second drive wheel (76) of another fretwork portion (51) other end, set up second belt (77) between second driven wheel (75) and second drive wheel (76), first driven wheel (73) and second drive wheel (76) rotate with the axle center, and two air blowing components are fixed respectively on first belt (74) and second belt (77).

5. A blowing device according to claim 4, characterised in that the driving device (7) further comprises a mounting seat (79) mounted on the fixed frame (6) and used for mounting the first driven wheel (73), the second driving wheel (76) and the second driven wheel (75), the mounting seat (79) is provided with a mounting groove (791) and the mounting groove (791) is horizontally arranged, a deep groove ball bearing (70) is arranged in the mounting groove (791), a transmission shaft (701) is arranged in a hole in the deep groove ball bearing (70), and the transmission shaft (701) is fixedly connected with the first driven wheel (73)/the second driving wheel (76)/the second driven wheel (75).

6. Blowing device according to claim 2, characterised in that the holder (6) is provided with a sliding rail (81) and a sliding block (82) sliding on the sliding rail (81), and the fixed plate (3) is fixedly connected with the sliding block (82).

7. A blowing device according to claim 6, characterised in that the hollow-out (51) is of rectangular configuration, the width of the outlet opening of the blowing nozzle (1) being greater than or equal to the width of the hollow-out (51).

8. A blowing device according to claim 7, characterised in that the holder (6) comprises two limiting strips (61) which are located on the long sides of the hollow (51), respectively, and that the sliding rails (81) are mounted on the limiting strips (61) on the side close to the driving means (7), the width between the two limiting strips (61) corresponding to the width of the blowing nozzle (1).

9. A blowing device according to claim 2, characterised in that it further comprises a first inductor (10) arranged on the holder (6) at one end of the hollow (51), and a second inductor (20) arranged on the holder (6) at the other end of the hollow (51).

10. A blowing device according to claim 2, characterised in that it further comprises a vibration motor (9) mounted on the holder (6).