JP3910109B2 - Cigarette feeder for hoisting machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a feeding device that is incorporated in a hoisting machine for producing cigarettes and supplies cigarettes to a cigarette band of the hoisting machine.
[0002]
[Prior art]
This type of cigarette feeding device is a process of feeding cigarettes toward the cigarette band, wind-separating the cigarettes according to their weight, and removing cigarettes that exclude heavy cigarettes (leaf bones) into the cigarette band. Supply towards.
This kind of wind separation is not necessary to improve the adsorption of the cigarettes to the cigarette band, and to ensure the stable enveloping of the cigarettes by the wrapping paper, that is, the cigarettes by the wrapping paper. is there.
[0003]
More specifically, the above-described wind separation is described in accordance with the weight of cigarettes that are jetted from the primary and secondary separation air jets in the process of being supplied to the cigarette band. Then, a predetermined size of cigarette is introduced to the fluidized bed trough. Thereafter, the cigarettes on the fluidized bed trough are guided to the cigarette band along the fluidized bed trough by the jet air ejected from the carrier air jet in a plurality of stages, and are adsorbed by the cigarette band.
[0004]
[Problems to be solved by the invention]
By the way, the jet air ejected from the primary and secondary separation air jets described above is only used for the wind separation of the cigarettes, and contributes substantially to the transport of the cigarettes on the fluidized bed trough. Not done. Therefore, jet air from the above-described transport air jet is indispensable for reliably transporting cigarettes to the cigarette band.
[0005]
Since the feeding device of the tobacco thus engraved requires not only the primary and secondary separation air jets but also a plurality of transport air jets, the energy consumption is large, which is a major factor causing an increase in environmental load. Yes.
The present invention has been made based on the above-described circumstances, and its object is to reduce the amount of jet air ejected from the carrier air jet or to eliminate the carrier air jet itself, effectively reducing energy consumption. It is an object of the present invention to provide a cigarette feeding device for a hoisting machine that can be achieved.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention includes a gravity chute for supplying cigarettes, a separation throat branched laterally from the middle of the gravity chute, and jet air from the weight chute toward the inlet of the separation throat. A primary separation air jet that ejects, a fluidized bed trough that extends from the outlet of the separation throat toward the cigarette band of the hoisting machine and guides the cigarette, and an opening that opens to the fluidized bed trough near the outlet of the separation throat And a separating machine connected to the gravity chute at a position below the separating throat, and a secondary separating air jet that ejects jet air from the opening of the separating duct along the fluidized bed trough. In the cigarette feeding device, the feeding device of the present invention (Claim 1) extends from the upper edge of the outlet of the separation throat toward the fluidized bed trough, and the fluidized bed trough. In cooperation comprises an extending member that forms an air merging nozzle channel cross-sectional area gradually decreased from the outlet and.
[0007]
According to the feeding device described above, the cigarettes falling in the heavy chute receive jet air ejected from the primary separation air jet from the side, and the relatively light cigarettes together with the jet air pass through the separation throat on the fluidized bed trough. Led to. That is, the jet air from the primary separation air jet performs the primary wind separation of the tobacco.
[0008]
On the other hand, the remaining cigarettes including heavy cigarettes in the gravity chute are dropped in the gravity chute and discharged into the separation duct. Here, ascending air current rising toward the opening is generated in the separation duct by jet air ejected from the secondary separation air jet, and among the cigarettes discharged to the separation duct, light cigarettes Is blown up by the ascending air current and is guided onto the fluidized bed trough through the opening of the separation duct together with the jet air from the secondary separation air jet. Therefore, the jet air from the secondary separation air jet performs the secondary wind separation of the tobacco.
[0009]
Jet air from the primary and secondary separation air jets described above merges in an air merging nozzle formed between the extension member and the fluidized bed trough, and the inside of the air merging nozzle is engraved along the fluidized bed trough. Flowing. Here, since the cross-sectional area of the flow path of the air merging nozzle is gradually reduced from the outlet of the separation throat toward the nozzle port, the merging airflow passes through the air merging nozzle while accelerating and then flows from the nozzle port. The cigarettes blown along the bed trough are blown out, and the blown up cigarettes are further conveyed to the cigarette band along the fluidized bed trough and adsorbed by the cigarette band.
[0010]
It is preferable that the above-mentioned extending member is smoothly connected to the ceiling wall of the separation throat and extends along the jet direction of the jet air from the primary separation air jet.
Such an extension member smoothly guides the flow of jet air from the separation throat, and this air jet merges with the jet air from the opening of the separation duct in a layered manner without stirring the tobacco on the fluidized bed trough. , Smoothly transport while accelerating.
[0011]
Furthermore, it is preferable that the nozzle opening in the air merging nozzle has an opening height of 10 to 20 mm when viewed from the fluidized bed trough. In this case, a desired acceleration force is applied to the cigarette without increasing the transport resistance of the cigarette more than necessary.
Furthermore, the feeding device of the present invention can also be applied to a double track type hoisting machine. In this case, the fluidized bed trough in the feeding device has a first and second branch at a portion downstream from the air merging nozzle. It is divided into trough portions, and the first and second branch trough portions guide the cut tobacco toward the corresponding tobacco band (claim 2).
[0012]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 schematically shows a hoist for producing cigarettes.
The hoisting machine includes an endless cigarette band 2, and the cigarette band 2 is composed of a suction belt that travels in one direction. As shown in FIG. 1, a cigarette feeding device 4 to be described later is disposed below the right end portion of the cigarette band 2. The cigarette is supplied with the cigarette from the feeding device 4, and the cigarettes are layered on the lower surface thereof. Adsorb. The cut tobacco layer thus formed is transported toward the left in FIG. 1 along with the traveling of the tobacco band 2.
[0013]
A hoisting section 6 is disposed on the left end side of the cigarette band 2, and the hoisting section 6 includes an endless garniture tape 8. The garniture tape 8 also travels in the same direction as the cigarette band 2. The wrapping paper P is guided onto the garniture tape 8, and the wrapping paper P travels with the garniture tape 8. The wrapping paper P is supplied with the tobacco layer from the tobacco band 2, and the wrapping paper P and the tobacco layer pass through the winding section 6 together with the garniture tape 8. At this time, the cigarette layer is continuously wrapped by the wrapping paper P through the garniture tape 8 to become the cigarette rod TR and is sent out from the hoisting section 6. Thereafter, when the tobacco rod T passes through the cutting section 10, the tobacco rod T is cut into a predetermined length and formed into individual cigarette rods CR. Here, the cigarette rod has twice the length of the cigarette portion in the filter cigarette.
[0014]
FIG. 2 shows a part of the feeding device 4 described above in detail.
The feeding device 4 includes a sub hopper 12 of tobacco, and a lower end opening of the sub hopper 12 is closed by a needle roller 14 and a picker roller 16. When the needle roller 14 and the picker roller 16 are rotated in directions opposite to each other, the cigarette in the sub hopper 12 is discharged from between the rollers 14 and 16 to the gravity chute 18 and falls in the gravity chute 18.
[0015]
Although not shown in FIG. 2, the sub hopper 12 is supplied with the cigarette in the main hopper via the lift conveyor, and the main hopper is supplied with the cigarette from the distributor via the air duct. It has come to be.
The gravity chute 18 extends downward from the needle roller 14 and the picker roller 16, and as shown in FIG. 2, the opening width of the gravity chute 18 gradually decreases toward its lower end, and once it has widened, it gradually decreases again. is doing.
[0016]
A separation throat 20 is branched from the middle of the gravity chute 18, and the separation throat 20 extends leftward as viewed in FIG. The separation throat 20 has an inlet communicating with the gravity chute 18, and the separation jet air J ₁ from the primary separation air jet 22 is jetted toward the inlet. That is, the primary separation air jet 22 includes a compressed air casing 24 incorporated as a part of the inner wall of the gravity chute 18 facing the inlet of the separation throat 20, and compressed air is supplied into the compressed air casing 24. ing. A jet port 26 is opened in the compressed air casing 24 toward the gravity chute 18, and separated jet air J ₁ as shown by a white arrow is ejected from the jet port 26.
[0017]
Furthermore, air inlets 28 and 30 are opened on the upper and lower sides of the primary separation air jet 22 on the inner wall of the gravity sheet 18, and from the air inlets 28 and 30 to the inlet of the separation throat 20 as the separation jet air J ₁ is ejected. Outside air is introduced into the gravity chute 18.
From the outlet of the separation throat 20, the fluidized bed trough 36, that is, the trough bottom wall 38 extends toward the tobacco band 2 described above. More specifically, the trough bottom wall 38 extends while curving upward from the separation throat 20 toward the cigarette band 2, and rises substantially vertically immediately below the cigarette band 2.
[0018]
The tobacco band 2 extends in the band casing 40, and the lower band portion 2 a of the tobacco band 2 extends along the lower surface of the band casing 40. A pair of notch guides 42 projects from the lower surface of the band casing 40 so as to sandwich the lower band part 2a from both sides, and these notch guides 42 extend along the lower band part 2a. Of the notch guides 42, the outer notch guide 42 is connected to the upper end of the trough bottom wall 38, and the pair of notch guides 42 is a guide passage 44 that continues between the trough bottom wall 38 and the lower band portion 2 a of the tobacco band 2. Is forming.
[0019]
Further, the inside of the band case sink 40 is formed as a suction chamber 46, and this suction chamber 46 generates a suction airflow that passes through the guide passage 44 and the lower band portion 2 aa from the upper end of the trough bottom wall 38. It flows out from the ceiling wall of the casing 40.
Further, the fluidized bed trough 36 is formed as a compressed air chamber 48, and a plurality of transport air jets 50 are incorporated in the trough bottom wall 38 between the separation throat 20 and the cigarette band 2 with a predetermined interval. It is. Specifically, the trough bottom wall 38 is formed in a stepped shape having a plurality of steps, and these steps are formed as jet openings of the respective conveying air jets 50. The jet port of the carrier air jet 50 opens toward the cigarette band 2, and thereby the carrier jet air as shown by the white arrow is ejected from the jet port along the trough bottom wall 38.
[0020]
Note that the fluidized bed trough 36 is supported at one end on the separation throat 20 side by a rotating shaft 52, and can be rotated around the rotating shaft 52 in the direction of arrow A in FIG.
The lower end of the gravity chute 18 described above is connected to a separation duct 56 via a paddle wheel 54, and the separation duct 56 extends in the vertical direction. A part of the upper end of the separation duct 56 is formed at the right end of the fluidized bed trough 36, and the upper end of the separation duct 56 is open to the trough bottom wall 38. More specifically, a step is secured between the lower outlet edge of the separation throat 20 and the trough bottom wall 38, and the upper end opening 58 of the separation duct 56 is formed at this step.
[0021]
A portion between the separation throat 20 and the paddle wheel 54 is formed by a compressed air casing 62 of the secondary separation air jet 60, and the compressed air casing 62 is a part of the bottom wall of the weight chute 18 and the separation duct 56. The secondary separation air jet 60 has a jet port 64 that opens into the separation duct 56. The jet port 64 communicates with the compressed air casing 62 and opens toward the upper end opening 58 of the separation duct 56. Accordingly, the separated jet air J ₂ indicated by the white arrow is ejected from the jet port 64. The separation jet air J ₂ is ejected from the upper end opening 58 of the separation duct 56 along the trough bottom wall 38, while generating an updraft in the separation duct 56, and the updraft is generated in the separation duct 56. Introduce outside air.
[0022]
Further, a movable flap 66 is provided above the secondary separation air jet 60 with the separation throat 20 in between, and this movable flap 66 covers the ceiling wall of the separation throat 20 and the inner wall of the gravity chute 18 connected to the ceiling wall. Forming.
The upper end of the movable flap 66 is rotatably supported via a support pin 68, and can reciprocally rotate around the support pin 68 as indicated by an arrow B in FIG.
[0023]
A flap extension 68 as an extending member is provided on the upper edge of the outlet of the separation throat 20, that is, the lower end of the movable flap 66. The flap extension 68 extends toward the trough bottom wall 38, and forms an air merging nozzle connected to the outlet of the separation throat 20 in cooperation with the trough bottom wall 38. That is, the upper end opening 58 of the separation duct 56 opens in the air merge nozzle, and the flow path cross-sectional area of the air merge nozzle is gradually reduced from the outlet of the separation throat 20.
[0024]
More specifically, the lower surface of the flap extension 68 is smoothly connected to the ceiling wall of the separation throat 20, and the ceiling wall of the separation throat 20 and the lower surface of the flap extension 68 coincide with the jet direction of the separation jet air J ₁ described above. So as to extend linearly.
The tip of the flap extension 68 is positioned closer to the cigarette band 2 than the upstream conveying air jet 50 located on the upper end opening 58 side of the separation duct 56, and the opening width W between the trough bottom wall 38 ( The opening height of the nozzle opening in the air merging nozzle is set to 10 to 20 mm.
[0025]
On the other hand, a mesh screen 70 is disposed above the trough bottom wall 38. The mesh screen 70 is curved in the direction opposite to that of the trough bottom wall 38, and the device frame on the band casing 40 side of the tobacco band 2 described above. The gravity chute 18 is connected. Accordingly, the mesh screen 70, the movable flap 66 and the trough bottom wall 38 form a circular trough chamber 72, which is connected to the air circulation path through a number of openings in the mesh screen 70.
[0026]
According to the feeding apparatus 4 of the above-mentioned cut tobacco, the cut tobacco discharged from the sub-hopper 12 into the gravity chute 18 falls within the gravity chute 18, at the fall process, separation air jets J ₁ and the air introduced previously described The outside air introduced from the mouths 28 and 30 is received from the side.
The separated jet air J ₁ and the introduced outside air deflect the direction of falling of the relatively light tobacco in the tobacco toward the separation throat 20, so that the deflected tobacco is trapped through the separation throat 20. Guided onto the bottom wall 38. On the other hand, the remaining tobacco is dropped in the gravity chute 18 as it is regardless of the separation jet air J ₁ and the introduced outside air, and is discharged into the separation duct 56 through the rotary valve 54. That is, the cigarette that falls in the gravity chute 18 is subjected to primary wind separation by the separated jet air J ₁ and the introduced outside air based on its weight.
[0027]
As described above, ascending airflow is generated in the separation duct 56. Among the chopped cigarettes discharged to the separation duct 56, the light chopped cigarette is blown up in the separation duct 56 by the ascending airflow, and the separation jet Together with the air J ₂ , the air is guided from the upper end opening 58 of the separation duct 56 onto the trough bottom wall 38. That is, the cigarette discharged to the separation duct 56 is subjected to secondary wind separation by the updraft in the separation duct 56 based on its weight.
[0028]
Therefore, the cigarettes falling in the separation duct 56 are heavy non-standard cigarettes, that is, only leaf bones, and these non-standard cigarettes are collected from the separation duct 56 to the collection path.
The separation jet air J ₁ (including introduced outside air) flowing from the separation duct 20 into the air merge nozzle and the separated jet air J ₂ (including introduced outside air) flowing from the upper end opening 58 of the separation duct 56 are the air merge nozzle. Along with the transport jet air ejected from the transport air jet 50 inside, the cigarettes subjected to the primary and secondary wind separation are transported along the trough bottom wall 38.
[0029]
Here, the extension flap 68 so extend along the ejection direction of the separation air jets J _1, separated air jets J ₁ comprising introducing outside air flows smoothly along the lower surface of the extension flap 68, and the introduction The separated jet air J ₂ including the outside air joins in layers. Therefore, the separated jet airs J ₁ and J ₂ do not stir the cigarette, and smooth conveyance of the cigarette is guaranteed.
[0030]
The cigarettes transported in this way pass through the air merging nozzle, are further transported on the trough bottom wall 38, and the cigarette band 2 receives the transport jet air from the remaining transport air jets 50 in stages. To the cigarette band 2.
As described above, since the cross-sectional area of the air merging nozzle is gradually decreased from the outlet of the separation throat 20 toward the nozzle port, the separated jet airs J ₁ and J ₂ that merge in the air merging nozzle are The flow velocity is accelerated, and as a result, strong merged jet air is blown out from the nozzle port of the air merge nozzle. Such merged jet air flows along the trough bottom wall 38 and assists the transport of the cigarette by the transport jet air.
[0031]
As a result, it is possible not only to reduce the wind speed and air volume of the transport jet air or to reduce the number of transport air jets 50 themselves, but also to reduce the wind speed and air volume of the separated jet air J ₁ and J _2. Therefore, the energy consumption required for generating jet air as a whole is greatly reduced.
Moreover, when the wind speed and air volume of the air jet are reduced in this way, the volatilization of the fragrance component from the cigarette is also reduced, and the taste of the cigarette can be maintained.
[0032]
On the other hand, when the wind speed and air volume of the separation jets J ₁ and J ₂ and the transport jet air are maintained as before, the transport capacity of the cigarette is greatly improved.
Further, since the opening width W of the nozzle opening in the air merging nozzle is set to 10 to 20 mm, the air merging nozzle does not provide a great resistance to the conveyance of the cigarette on the trough bottom surface 38, and the above-described cigarette Cigarettes are conveyed as a laminar flow having a thickness suitable for forming a layer.
[0033]
The separated jet air and the transport jet air that flow into the trough chamber 72 are collected in the circulation path through the mesh screen 70.
The present invention is not limited to the above-described embodiment, and various modifications can be made.
For example, if the opening width W between the air merging nozzle described above, that is, the tip of the extension flap portion 68 and the trough bottom wall is appropriately set, the cigarette is put into the merging jet air blown out from the air merging nozzle. Sufficient transport force can be applied to transport from the air merge nozzle to the cigarette band 2. In this case, all the conveyance air jets 50 can be omitted.
[0034]
If the transport air jet 50 is omitted, the trough bottom wall 38 does not need to be stepped, so that the trough bottom wall 38 can be formed as a smooth arc surface as shown in FIG. The crushing of cigarettes resulting from the collision is greatly reduced.
Further, since the separated jet air J ₁ and J ₂ are used not only for the wind separation of cigarettes but also for their transport, the cigarettes other than the separated jet air J ₁ and J ₂ (including the introduced outside air) It is not exposed to new jet air such as transport jet air. Therefore, the separated jet airs J ₁ and J ₂ that transport the cigarettes maintain the taste of the cigarettes.
[0035]
Further, the lower surface of the extension flap portion 68 does not necessarily extend linearly from the ceiling wall of the separation throat 20, and as shown by a two-dot chain line in FIG. 3, the ceiling wall of the separation throat 20 and the extension flap 68. The lower surface may have a curved shape that protrudes downward.
Furthermore, the feeding device of the present invention can be similarly applied to a double track type hoisting machine as shown in FIG. The double-track type hoisting machine includes band casings 40a and 40b arranged in parallel, and the cigarette band 2 is arranged in the band case sinks 40a and 40b. In this case, the trough bottom wall 38 is divided into an air merging nozzle, that is, a downstream portion of the flap extension 68 as first and second branch trough portions 38a and 38b, and these first and second branch trough portions 38a, 38b, 38b extends toward the tobacco band 2 of the corresponding band casing 40a, 40b.
[0036]
More specifically, as shown in FIG. 4B, branch air jets 74 a and 74 b are incorporated at the start ends of the first and second branch trough portions 38 a and 38 b, and are ejected from these branch air jets 74. The jet air guides the cigarettes blown over the trough bottom wall 38 toward the corresponding branch trough portions 38a and 38b, so that the cigarettes cut toward the cigarette band 2 of the band casings 40a and 40b respectively. Supplied.
[0037]
【The invention's effect】
As described above, according to the winding device for a hoisting machine of the present invention (Claim 1), since the air merging nozzle is connected from the outlet of the separation throat, it is ejected from the primary and secondary separation air jets. It can be used not only for wind separation of cigarettes with separated jet air but also for transporting them. As a result, it is possible to reduce the wind speed and volume of the transport jet air required for separated jet air and fluidized bed troughs, so that the energy consumption required to generate these jet airs can be reduced while maintaining the taste of cigarettes. Can do. On the other hand, when the air velocity and air volume of the jet air are maintained, the conveying power of the cigarette can be greatly improved without causing an increase in energy consumption.
[0038]
Furthermore, jet air from the primary and secondary separation air jets merges at the air merge nozzle, so that the jet air itself from the primary and secondary separation air jets can be used as the transport jet air. In this case, the conveyance air jet can be omitted, and energy consumption can be greatly reduced.
Since the extending member forming the air merging nozzle is smoothly connected to the ceiling wall of the separation throat and further extends along the jet direction of the jet air from the primary separation air jet (Claim 2), the jet air is the air In the merging nozzle, the jet air from the opening of the separation duct merges in a layered manner, and such merging jet air can quickly convey the cigarette without stirring the cigarette.
[0039]
If the opening width of the nozzle opening in the air merging nozzle is set to 10 to 20 mm (Claim 3), the merging jet air gives a sufficient conveying force to the cigarette without hindering the layered conveyance of the cigarette. .
Furthermore, if the downstream portion of the fluidized bed trough is divided into a first and a first branched trough portion (Claim 4), the feeding device of the present invention can be similarly applied to a double track type hoisting machine. is there.
[Brief description of the drawings]
FIG. 1 is a schematic view of a hoisting machine.
FIG. 2 is a longitudinal sectional view of a part of the engraved tobacco feeding device of FIG.
FIG. 3 is a schematic view illustrating a feeding device according to a modified example.
FIG. 4 is a schematic view of a feeding device applied to a double track type hoisting machine.
[Explanation of symbols]
2 Cigarette band 18 Gravity chute 20 Separation throat 22 Primary separation air jet 26 Jet port 36 Fluidized bed trough 38 Trough bottom wall 54 Rotary valve 56 Separation duct 58 Upper end opening 60 Secondary separation air jet 64 Jet port 66 Movable flap 68 Extension flap part (Extension member)
J ₁ separation jet air J ₂ separation jet air 38a first branch trough portion 38b second branch trough portion 40a band casing 40b band casing 74 branch air jet

Claims (4)

A gravity chute to supply cigarettes,
A separation throat branched laterally from the middle of the gravity chute;
A primary separation air jet that ejects jet air from the weight chute toward the inlet of the separation throat;
A fluidized bed trough that extends from the outlet of the separation throat toward the cigarette band of the hoist and guides the cigarette,
A separation duct having an opening opened to the fluidized bed trough near the outlet of the separation throat and connected to the gravity chute at a position below the separation throat;
In a cigarette feeder of a hoisting machine provided with a secondary separation air jet that ejects jet air from the opening of the separation duct along the fluidized bed trough,
An extending member that extends from the upper edge of the outlet of the separation throat toward the fluidized bed trough and forms an air merging nozzle that cooperates with the fluidized bed trough to gradually reduce the flow passage cross-sectional area from the outlet. A cigarette feeding device for a hoisting machine characterized by comprising: 2. The hoisting machine according to claim 1, wherein the extending member is smoothly connected to a ceiling wall of the separation throat and extends along a jet direction of jet air from the primary separation air jet. Tobacco feeding device. The cigarette feeder for a hoist according to claim 2, wherein a nozzle port of the air merging nozzle has an opening height of 10 to 20 mm when viewed from the fluidized bed trough. The fluidized bed trough includes first and second branch trough portions that are separated from each other at a downstream portion of the air merging nozzle, and the first and second branch trough portions are provided on the corresponding side of the double-track type hoisting machine. The cigarette feeding device for a hoist according to any one of claims 1 to 3, wherein the cigarette is guided toward a cigarette band.

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