CN214930932U - Yardage roll baling press - Google Patents

Abstract

The utility model relates to a yardage roll baling press, it includes packing module, second transmission device, ejection of compact frame and the play workbin that distributes in proper order along yardage roll moving direction, second transmission device is used for driving the yardage roll to the rack, be provided with ejection of compact module in the ejection of compact frame, ejection of compact module is including being used for the placer with the yardage roll centre gripping, being used for driving the placer be close to the drive arrangement who keeps away from the play workbin and be used for driving the elevating gear of the vertical removal of placer, drive arrangement sets up in ejection of compact frame, elevating gear sets up on drive arrangement, placer sets up on elevating gear, placer is including being used for spacing rack of yardage roll and opening mechanism, rack one end is rotated and is connected on elevating gear, opening mechanism is used for driving the rack rotation. This application has the effect that reduces workman's intensity of labour.

Description

Yardage roll baling press

Technical Field

The application relates to the field of yardage roll tectorial membrane packing, especially, relate to a yardage roll baling press.

Background

The cloth is rolled by a cloth inspecting and rolling machine to form a cloth roll, and the cloth roll needs to be packaged before being delivered out of a warehouse for transportation so as to prevent the cloth roll from being polluted or damaged in the transportation process.

The application publication No. CN110817013A discloses a side sealing device of a yardage roll packing machine, which comprises a frame, wherein a plurality of conveying belts are horizontally arranged on the frame along the width direction, automatic butt-clamping devices are respectively arranged at two ends of the frame, and exhaust fans are respectively arranged outside two ends of the frame; an air suction opening is formed in the outward side of the automatic butt-clamping device and is connected with an exhaust fan through a pipeline; the automatic butt-clamping device is internally and sequentially provided with a film gathering mechanism and a cutting and sealing mechanism from inside to outside, the film gathering mechanism comprises two clamping plates capable of moving laterally, and the cutting and sealing mechanism comprises a side cutter and a cutting seat which can move up and down. This technical scheme has reduced the width of sealing, has increased the firmness of packing.

During the use, carry the yardage roll that does not seal to the side to between two automatic butt clamp devices through the conveyer belt, the bracket will be for the yardage roll of side seal to fix a position the lifting, the air exhauster is managed to find time the air between yardage roll and the membrane, later two splint move from both sides to the centre and are held together the membrane, move from both sides from upper and lower both sides to the centre simultaneously by side sword and cutting seat again and cut and seal, the side sword is amputated unnecessary film, accomplishes the side seal to the yardage roll.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: after the yardage roll baling press is accomplished the yardage roll packing, the workman need carry the yardage roll of packing to the play workbin in, has increased workman's intensity of labour.

SUMMERY OF THE UTILITY MODEL

In order to reduce workman's intensity of labour, this application provides a yardage roll baling press.

The application provides a yardage roll baling press adopts following technical scheme:

the utility model provides a yardage roll baling press, includes packing module, second transmission device, ejection of compact frame and the play workbin that distributes in proper order along yardage roll moving direction, second transmission device is used for driving the yardage roll to the rack, be provided with ejection of compact module in the ejection of compact frame, ejection of compact module is including being used for the placer with the yardage roll centre gripping, being used for driving the placer be close to the drive arrangement who keeps away from the play workbin and be used for driving the elevating gear of the vertical removal of placer, drive arrangement sets up in the ejection of compact frame, elevating gear sets up on drive arrangement, placer sets up on elevating gear, placer is including being used for spacing rack of yardage roll and opening mechanism, rack one end is rotated and is connected on elevating gear, opening mechanism is used for driving the rack rotation.

Through adopting above-mentioned technical scheme, accomplish the yardage roll packing through the packaging module, the yardage roll after the packing is accomplished passes through the second transmission device and carries to the rack on, elevating gear with rack and the yardage roll lifting of packing completion, drive arrangement drives the yardage roll removal of packing completion to the top of ejection of compact case, and opening mechanism drive rack rotates afterwards, and the yardage roll of packing completion has reduced workman's intensity of labour because the effect gliding immigration of gravity is gone into the ejection of compact incasement.

Optionally, the rack is rotatably connected with two conveying devices which are arranged in a mirror image surface mirror mode by using a vertical surface, each conveying device comprises a plurality of discharging rollers, the discharging rollers are connected to the rack in a rotating mode and are distributed along the length direction of the cloth rollers, and the conveying devices form a space for placing cloth rolls.

Through adopting above-mentioned technical scheme, when second transmission device removed the yardage roll to the rack, the discharge roller changed the slip friction of yardage roll and rack into rolling friction, has reduced the friction of yardage roll and rack, has reduced the condition emergence of the membrane damage on the yardage roll.

Optionally, the lifting device is provided with a blocking plate for blocking the cloth roll.

When the second transmission device moves the cloth roll to the placing frame, the cloth roll has inertia, and the cloth roll is easy to separate from the discharging roller.

By adopting the technical scheme, when the second transmission device moves the cloth roll to the placing frame, the cloth roll enters the placing frame through the discharge roller and then is blocked by the blocking plate, so that the cloth roll is prevented from being separated from the placing frame; when the placing rack is rotated and opened, the distance between the placing rack and the blocking plate is increased to form a space for the cloth roll to pass through.

Optionally, a sliding groove extending along the length direction of the placing frame is formed in the placing frame, the opening mechanism comprises two discharging air cylinders and two cylindrical rollers, the cylinder bodies of the discharging air cylinders are arranged on the lifting device, the placing frame is located between the two discharging air cylinders, the cylindrical rollers are arranged on piston rods of the discharging air cylinders, and the cylindrical rollers are connected in the sliding groove in a sliding mode.

Through adopting above-mentioned technical scheme, when needs rotate the rack, ejection of compact cylinder extension, the cylinder roller is at the inslot internal rotation that slides and slide to realize the rotation of rack, the yardage roll slides into out workbin, simple structure through the space between rack and the barrier plate.

Optionally, the packaging module includes a first transmission device and a heat sealing device which are sequentially distributed along a movement direction of the cloth roll, the heat sealing device is rotatably connected with a coiled packaging sleeve, the first transmission device is used for driving the cloth roll to move along a direction close to the heat sealing device, the heat sealing device is used for sealing and cutting off the packaging sleeve, and the packaging sleeve is sleeved on the first transmission device.

By adopting the technical scheme, during use, a worker struts the packaging sleeve, the packaging sleeve is sleeved on the first transmission device, the first transmission device transports the cloth roll into the packaging sleeve, the cloth roll is close to the heat sealing device, the heat sealing device carries out heat sealing and cutting on the packaging sleeve, the first transmission device transports the cloth roll to the second transmission device, the heat sealing device carries out heat sealing on the other end of the packaging sleeve, the second transmission device transports the cloth roll out, and the packaging of the cloth roll is achieved.

Optionally, be provided with on the transmission frame and be used for establishing the device with the cover that packing cover established on the yardage roll, the cover is established the device and is established the ring and a plurality of clamping piece that are used for pressing from both sides packing cover clamp tightly on the ring is established to the cover including driving actuating cylinder, cover, drive actuating cylinder setting on the transmission frame, the cover is established the ring and is established on transmission frame and yardage roll, the cover is established the ring and is set up on the piston rod that drives actuating cylinder, and is a plurality of the clamping piece all sets up on the cover is established the ring.

By adopting the technical scheme, when the packaging device is used, a worker fixes the packaging sleeve on the sleeve setting ring through the clamping piece, then the packaging sleeve is driven by the driving cylinder to be driven to be sleeved on the transmission frame, so that the packaging sleeve is further convenient to be sleeved on the transmission frame by the worker, the worker is not required to support the packaging sleeve all the time, and the labor intensity of the worker is reduced.

Optionally, the clamping piece includes a clamping rod and a clamping spring for maintaining a state that the clamping rod abuts against the sleeved ring, and the clamping rod is connected to the sleeved ring in a sliding manner along a direction close to or far away from the axis of the sleeved ring.

Through adopting above-mentioned technical scheme, during the use, will press from both sides tight pole and establish the direction removal of ring to keeping away from the cover, will pack the cover and place between tight pole and cover are established to pressing from both sides tight pole and cover, later clamping spring will press from both sides tight pole and move to the direction that is close to the cover and connects the ring for tight, convenient operation are established to tight pole and cover and will pack the cover and support.

Optionally, the transmission frame is provided with an air blowing pipe for blowing air into the packaging sleeve, and the air blowing pipe is connected with an air source.

Through adopting above-mentioned technical scheme, establish the ring at the cover and establish packing cover when the transmission frame is gone up, the gas blow pipe blows in gas in packing cover, blows the drum with packing cover, reduces packing cover and contradicts with the transmission frame, leads to the condition emergence of packing cover damage.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the packaged cloth rolls are placed into the discharging box through the discharging module, so that the labor intensity of workers is reduced;

2. through the sleeving device and the air blowing pipe, workers can conveniently sleeve the packaging sleeve on the transmission frame, and the occurrence of the damage of the packaging sleeve is reduced;

3. the situation that the cloth roll is separated from the placing frame is reduced through the blocking plate.

Drawings

Fig. 1 is a schematic structural diagram of a specific embodiment of the present application.

Fig. 2 is a schematic structural view of the packaging module of the present application.

Fig. 3 is a schematic structural diagram of the first transmission device and the sleeving device of the present application.

Fig. 4 is a sectional view taken along a-a in fig. 2 of the present application, for illustrating the structure of the clamping member.

Fig. 5 is an exploded view of the heat seal apparatus of the present application.

FIG. 6 is a schematic structural view of the outfeed housing and the outfeed module of the present application.

Fig. 7 is an enlarged view at B in fig. 6 of the present application.

Reference numerals: 1. a first transmission device; 11. a transmission motor; 12. a transfer roller; 13. a transmission rack; 14. a conveyor belt; 15. an air blowing pipe; 16. a gas source; 2. a second transmission device; 3. sleeving a device; 31. a driving cylinder; 32. sleeving a ring; 33. a clamping member; 331. a clamping lever; 332. a contact block; 333. a limiting plate; 334. a clamping spring; 34. a first plate; 35. a second plate; 4. a heat sealing device; 41. heat sealing the frame; 42. a first sliding seat; 43. a second sliding seat; 44. a heat seal knife; 45. heat-sealing the base; 46. a drive member; 461. a bidirectional screw rod; 462. a drive motor; 47. a limiting rod; 5. packaging the sleeve; 6. a discharging machine frame; 61. a linear motor; 62. a lifting device; 621. a lifting cylinder; 622. a lifting plate; 63. a slide plate; 64. rotating the base; 65. a blocking plate; 7. a placement device; 71. placing a rack; 72. an opening mechanism; 721. a discharging cylinder; 722. a cylindrical roll; 73. a sliding groove; 74. a discharging roller; 8. and a discharging box.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

The embodiment of the application discloses yardage roll baling press. Referring to fig. 1, a yardage roll baling press includes first transmission device 1, sealing device 4, second transmission device 2, ejection of compact frame 6 and the play workbin 8 that sets gradually along yardage roll moving direction, is provided with the packing cover 5 of lapping on the sealing device 4, and packing cover 5 includes the plastic sheath, is provided with ejection of compact module on the ejection of compact frame 6.

Referring to fig. 2 and 3, the first transmission device 1 and the second transmission device 2 each include two transmission belts using a vertical surface as a mirror image surface, and each transmission belt includes a plurality of transmission rollers 12, a transmission motor 11 for driving the transmission rollers 12 to rotate, a transmission frame 13, and a transmission belt 14.

Referring to fig. 2 and 3, the plurality of transmission rollers 12 are rotatably connected to the transmission frame 13 and uniformly distributed along the length direction of the transmission frame 13, the transmission rollers 12 are inclined along the direction of the transmission frame 13 close to the mirror surface, the higher ends of the transmission rollers 12 are rotatably connected to the transmission frame 13, the transmission belts 14 are sleeved on the plurality of transmission rollers 12, two transmission belts 14 form a space for placing a yardage roll, the transmission motor 11 is fixedly connected to the transmission frame 13, and the output shaft of the transmission motor 11 is coaxially and fixedly connected with the transmission rollers 12; the length direction of the conveying belt 14 is parallel to the moving direction of the cloth roll.

Referring to fig. 2 and 3, the transmission frame 13 is provided with a sleeving device 3, the sleeving device 3 includes two driving cylinders 31, a sleeving ring 32 and three clamping members 33, and the clamping members 33 include clamping rods 331, abutting blocks 332, limiting plates 333 and clamping springs 334.

Referring to fig. 3 and 4, it is parallel with transmission frame 13 length direction to drive actuating cylinder 31 length direction, drive actuating cylinder 31 fixed connection on transmission frame 13, the vertical setting of ring 32 is established to the cover, the cover is established the ring 32 cover and is established on two transmission frames 13, the cover is established ring 32 fixed connection and is being driven on two piston rods that drive actuating cylinder 31, the three first flat board 34 of fixedly connected with on the lateral wall of cover is established ring 32, the ring 32 circumference distribution is established along the cover to three first flat board 34, the one end fixedly connected with second flat board 35 of ring 32 is established to the cover is kept away from to first flat board 34.

Referring to fig. 3 and 4, the length direction of the clamping rod 331 is parallel to the radial direction of the sleeved ring 32, the clamping rod 331 is connected to the first flat plate 34 in a sliding manner along the radial direction of the sleeved ring 32, one end of the clamping rod 331 close to the sleeved ring 32 is fixedly connected with a contact block 332, and one end of the contact block 332 far away from the clamping block is contacted with the sleeved ring 32; the limit plate 333 is fixedly connected to an end of the clamping rod 331 away from the set ring 32, and the limit plate 333 is located on a side of the second plate 35 away from the set ring 32.

Referring to fig. 4, the clamping spring 334 is sleeved on the clamping rod 331 and located between the abutting block 332 and the second plate 35; the clamping spring 334 has one end fixedly connected to the contact block 332 and the other end fixedly connected to the surface of the second plate 35 close to the collar 32.

Referring to fig. 2 and 5, the heat sealing device 4 includes a heat sealing frame 41, a first sliding seat 42, a second sliding seat 43, a heat sealing knife 44, a heat sealing base 45, and a driving member 46, and the driving member 46 includes a bidirectional screw 461 and a driving motor 462.

Referring to fig. 2 and 5, the coiled packaging sleeve 5 is rotatably connected to the heat-sealing frame 41, the coiled packaging sleeve 5 is located above the first conveying device 1 and the second conveying device 2, and the heat-sealing frame 41 is sleeved on the first conveying device 1 and the second conveying device 2; the heat-sealing machine frame 41 is fixedly connected with a limiting rod 47, the length direction of the limiting rod 47 is parallel to the length direction of the coiled packaging sleeve 5, and the limiting rod 47 is positioned above the first transmission device 1 and the second transmission device 2.

Referring to fig. 2 and 5, the bidirectional screw shaft 461 is rotatably connected to the heat-sealing frame 41, the bidirectional screw shaft 461 is parallel to the limiting rod 47, and the bidirectional screw shaft 461 is located right below the limiting rod 47 and below the first transmission device 1 and the second transmission device 2; the driving motor 462 is fixedly connected to the heat-sealing frame 41, and an output shaft of the driving motor 462 is coaxially and fixedly connected with the bidirectional screw rod 461; the first sliding seat 42 and the second sliding seat 43 are respectively in threaded connection with two threaded sections of the bidirectional screw 461 with different directions of rotation, the upper ends of the first sliding seat 42 and the second sliding seat 43 are connected to the limiting rod 47 in a sliding manner, and the first sliding seat 42 and the second sliding seat 43 are located between the first transmission device 1 and the second transmission device 2.

Referring to fig. 2 and 5, the heat-sealing knife 44 is fixedly connected to the surface of the first sliding seat 42 close to the second sliding seat 43, the heat-sealing knife 44 is located between the bidirectional screw 461 and the limiting rod 47, the heat-sealing base 45 is fixedly connected to the surface of the second sliding seat 43 close to the first sliding seat 42, the heat-sealing base 45 is located between the bidirectional screw 461 and the limiting rod 47, and the heat-sealing knife 44, the heat-sealing base 45 and the limiting rod 47 form a space for heat-sealing the packaging sleeve 5.

Referring to fig. 3, the transmission frame 13 is fixedly connected with an air blowing pipe 15, the length direction of the air blowing pipe 15 is parallel to the length direction of the transmission frame 13, the transmission frame 13 is fixedly connected with an air source 16, and the air blowing pipe 15 is connected with the air source 16.

Referring to fig. 6, the discharging module includes a placing device 7, a driving device and a lifting device 62, the driving device includes a linear motor 61, the length direction of the linear motor 61 is parallel to the movement direction of the cloth roll, and the linear motor 61 is fixedly connected to the discharging rack 6 and located above the discharging box 8.

Referring to fig. 6, the sliding table bottom surface of the linear motor 61 is fixedly connected with a sliding plate 63, the lifting device 62 includes two lifting cylinders 621 and a lifting plate 622, the two lifting cylinders 621 are fixedly connected to the bottom surface of the sliding plate 63, the two lifting cylinders 621 are distributed along the length direction of the sliding plate 63, the lifting plate 622 is horizontally disposed, and the lifting plate 622 is fixedly connected to the piston rod of the lifting cylinder 621.

Referring to fig. 6, the placing device 7 includes a placing frame 71 and an opening mechanism 72, the opening mechanism 72 includes two discharging cylinders 721 and two cylindrical rollers 722; two rotating bases 64 which are vertically arranged are fixedly connected to the bottom surface of the lifting plate 622, the two rotating bases 64 are distributed along the width direction of the sliding plate 63, and two side surfaces of the placing frame 71 are respectively connected to the rotating bases 64 in a rotating mode.

Referring to fig. 6, a vertically disposed blocking plate 65 is fixedly connected to one end of the lifting plate 622 near the discharging box 8.

Referring to fig. 6 and 7, two discharging cylinders 721 are both fixedly connected to the bottom surface of the lifting plate 622, the two discharging cylinders 721 are distributed along the width direction of the sliding plate 63, the placing frame 71 is located between the two discharging cylinders 721, the placing frame 71 is provided with sliding grooves 73 along the vertical plane distributed along the width direction of the sliding plate 63, the sliding grooves 73 extend along the length direction of the sliding plate 63, the cylindrical rollers 722 are fixedly connected to the piston rods of the discharging cylinders 721, and the two cylindrical rollers 722 are connected in the sliding grooves 73 in a sliding manner.

Referring to fig. 6, the placing frame 71 is rotatably connected with two conveying devices which are arranged by taking the vertical surfaces where the two lifting cylinders 621 are located as mirror image surfaces in a mirror image mode, each conveying device comprises a plurality of discharging rollers 74, the discharging rollers 74 are distributed along the length direction of the cloth roller, the discharging rollers 74 are obliquely arranged along the direction of the discharging rollers 74 close to the vertical surfaces where the two lifting cylinders 621 are located, and the higher ends of the discharging rollers 74 are rotatably connected to the placing frame 71.

The implementation principle of the yardage roll baling press of the embodiment of this application does: when in use, a worker moves the clamping rod 331 in a direction away from the sleeving ring 32, then places the packaging sleeve 5 between the abutting block 332 and the sleeving ring 32, the abutting block 332 fixes the packaging sleeve 5 on the sleeving ring 32, the driving cylinder 31 drives the sleeving ring 32 and the packaging sleeve 5 on the sleeving ring 32 to be sleeved on the transmission frame 13, the cloth roll is placed on the first transmission device 1, the cloth roll is close to the heat sealing device 4 and penetrates into the sleeving ring 32 and the packaging sleeve 5, the driving motor 462 drives the first sliding seat 42 and the second sliding seat 43 to be close to each other, the heat sealing knife 44 and the heat sealing seat carry out heat sealing on the packaging sleeve 5, then the first transmission device 1 transports the cloth roll to the second transmission device 2, the packaging sleeve 5 on the cloth roll is transported to the second transmission device 2 together due to the abutting of the cloth roll and the heat sealing position of the packaging sleeve 5, and the second transmission device 2 transports the other end of the cloth roll to between the heat sealing knife 44 and the heat sealing seat 45, the heat-sealing knife 44 and the heat-sealing base 45 heat-seal the other end of the cloth roll which is not heat-sealed, and the cloth roll is packaged.

Afterwards, the second transmission device 2 drives the packaged cloth roll to slide into the placing frame 71, the blocking plate 65 blocks the packaged cloth roll, the lifting cylinder 621 lifts the cloth roll upwards, the linear motor 61 drives the cloth roll to be above the discharging box 8, the discharging cylinder 721 extends to drive the placing frame 71 to rotate, the distance between the placing frame 71 and the blocking plate 65 is gradually increased, and the cloth roll slides into the discharging box 8 through the gap between the placing frame 71 and the blocking plate 65 under the action of gravity.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a yardage roll baling press which characterized in that: the cloth roll packaging machine comprises a packaging module, a second transmission device (2), a discharging rack (6) and a discharging box (8), wherein the packaging module, the second transmission device (2), the discharging rack (6) and the discharging box (8) are sequentially distributed along the moving direction of a cloth roll, the second transmission device (2) is used for driving the cloth roll to be placed on a placing rack (71), the discharging module is arranged on the discharging rack (6), the discharging module comprises a placing device (7) used for clamping the cloth roll, a driving device used for driving the placing device (7) to be close to and far away from the discharging box (8) and a lifting device (62) used for driving the placing device (7) to vertically move, the driving device is arranged on the discharging rack (6), the lifting device (62) is arranged on the driving device, the placing device (7) is arranged on the lifting device (62), the placing device (7) comprises a placing rack (71) used for limiting the cloth roll and an opening mechanism (72), one end of the placing frame (71) is rotatably connected to the lifting device (62), and the opening mechanism (72) is used for driving the placing frame (71) to rotate.

2. The cloth roll baler according to claim 1, wherein: the rotary cloth roll placing device is characterized in that two conveying devices which are arranged by taking a vertical surface as a mirror image surface mirror image are connected to the placing frame (71) in a rotating mode, each conveying device comprises a plurality of discharging rollers (74), the discharging rollers (74) are connected to the placing frame (71) in a rotating mode, the discharging rollers (74) are distributed along the length direction of the cloth rollers, and the conveying devices form a space for placing a cloth roll.

3. The cloth roll baler according to claim 2, wherein: the lifting device (62) is provided with a blocking plate (65) used for blocking the cloth roll.

4. A cloth beam baler according to claim 3, characterised in that: set up on rack (71) along the sliding groove (73) of rack (71) length direction extension, opening mechanism (72) include two ejection of compact cylinders (721) and two cylinder rollers (722), two the cylinder body setting of ejection of compact cylinder (721) is on elevating gear (62), rack (71) are located between two ejection of compact cylinders (721), cylinder roller (722) set up on the piston rod of ejection of compact cylinder (721), cylinder roller (722) slide and connect in sliding groove (73).

5. The cloth roll baler according to claim 1, wherein: the packaging module comprises a first transmission device (1) and a heat sealing device (4) which are sequentially distributed along the movement direction of a cloth roll, a coiled packaging sleeve (5) is rotatably connected onto the heat sealing device (4), the first transmission device (1) is used for driving the cloth roll to move along the direction close to the heat sealing device (4), the heat sealing device (4) is used for sealing and cutting off the packaging sleeve (5), and the packaging sleeve (5) is sleeved on the first transmission device (1).

6. The cloth roll baler according to claim 5, wherein: be provided with on transmission frame (13) and be used for establishing device (3) with packing cover (5) cover on the yardage roll, the cover is established device (3) and is including driving actuating cylinder (31), cover and establish ring (32) and a plurality of be used for with packing cover (5) clamp tightly establish clamping piece (33) on ring (32) are established to the cover, drive actuating cylinder (31) and set up on transmission frame (13), the cover is established ring (32) cover and is established on transmission frame (13) and yardage roll, the cover is established ring (32) and is set up on the piston rod that drives actuating cylinder (31), and is a plurality of clamping piece (33) all set up on ring (32) is established to the cover.

7. The cloth roll baler according to claim 6, wherein: the clamping piece (33) comprises a clamping rod (331) and a clamping spring (334) maintaining the clamping rod (331) and the sleeved ring (32) in a tight abutting state, and the clamping rod (331) is connected to the sleeved ring (32) in a sliding mode along the direction close to or far away from the axis of the sleeved ring (32).

8. The cloth roll baler according to claim 6, wherein: the conveying frame (13) is provided with an air blowing pipe (15) used for blowing air into the packaging sleeve (5), and the air blowing pipe (15) is connected with an air source (16).

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