JP5371201B2 - Bulk article conveying device and conveying / metering device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device with a small cleaning burden not deteriorating the quality of a bulk material by conveying in a conveying device and a conveying-metering device for the bulk material. <P>SOLUTION: A screw thread 22 is formed at the outer periphery of a conveying screw 21, and a pair of screws 2a in which two parallel conveying screws 21a, 21b are made to be one pair is constituted. In the one-side conveying screw 21a and the other side conveying screw 21b constituting the pair of screws 2a, the screw threads 22 are in a relationship of reverse screws to each other, and they are mutually reversely rotated in an entraining direction at an upper side. In each of the pair of screws 2a, the bulk materials M are placed on the screw threads 22 of the respective conveying screws 21a, 21b and forwardly fed. At this time, the fed bulk materials M are supported by apexes 22a of the screw threads. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to an apparatus that can convey, for example, loose articles such as foodstuffs, and an apparatus that can convey a bulk article and take out a predetermined weight.

Japanese Patent Laid-Open No. 7-72002 JP-A-7-103810 JP-A-8-258945 Japanese Patent Laid-Open No. 10-221311

As an apparatus for conveying and weighing articles, the invention shown in Patent Document 1 has been proposed. This is provided with a vibration conveyor and a combination weighing device.
The invention shown in Patent Document 2 has been proposed. This is provided with a belt conveyor and a combination weighing device.
The inventor of the present application conceived a conveying / metering device particularly suitable for foodstuffs as a loose article that is an aggregate of solid substances. Specifically, the ingredients referred to here are prepared foods such as hijiki and kinpira, as well as salads and soup ingredients, which are solids that are loosely bound together by moisture or oil. And it was the intention to employ | adopt a screw conveyor as a conveyance means in an apparatus.

  Here, there exists invention of patent document 3 as an example which used the screw conveyor with the conveying apparatus which handles foodstuffs.

  However, in such a screw conveyor, food is packed between screw blades spirally provided around the shaft, and the food is moved by rotating the screw. Ingredients that remain are generated, which increases the burden of screw cleaning. And there is a problem that the quality of the food is lowered, specifically, the freshness varies. Moreover, regarding the quality deterioration of a foodstuff, there also exists a problem that a foodstuff is pressed by a screw blade and is easy to be damaged.

  For example, as shown in Patent Document 4, not only for foods, but also for screw conveyors that have existed in the past, all articles are arranged between screw blades and pushed by screw blades that move as the screw rotates. Therefore, even if the conventional screw conveyor is diverted as it is, the above problem cannot be solved.

  In view of the above, it is an object of the present invention to provide a loose article transport apparatus and a transport / metering apparatus that have a small cleaning burden and do not deteriorate the quality of the loose article due to transport.

In order to solve the above problems, the present invention includes a transport unit 2 capable of sending a rose article M, which is an aggregate of solid objects Ma, from the rear B to the front F, and the transport unit 2 includes a plurality of transports. Screws 21 and 21 are provided, and the loose article M is placed on the thread 22 of each of the conveying screws 21a and 21b and sent to the front F. The loose article M to be sent is sent to the thread 22 In the conveying device supported by the top portion 22a, the conveying unit 2 includes a loosening unit 5 and a leveling unit 6, and the loosening unit 5 includes a loose article M between the conveying screws 21a and 21b. A scraping portion 52 for moving the loose article M placed on each of the conveying screws 21 to 21 at least in a direction crossing the axis of each of the conveying screws 21 so that the conveying amount of the conveying screw 21 is substantially equal. The leveling part 6 is provided on the front F side of the loosening part 5, and the rose article M placed on the conveying screws 21 to 21 is at least along the axis of the conveying screw 21. There is provided a conveying device for loose articles, characterized in that it includes a scraping portion 62 that is moved to the side.

  Each of the conveying screws 21 is provided with a screw thread 22 on the outer periphery, a central axis C extending in a linear direction, and a screw pair in which two parallel conveying screws 21a and 21b are made into one set. 2a is configured, and the screw screw 22a on one side and the screw screw 21b on the other side that constitute the screw pair 2a are in a reverse screw relationship with each other, and on the upper side In the direction of entrainment, they are supposed to rotate in reverse from each other,
The said conveyance part 2 shall be comprised by the said screw pair 2a being arranged in parallel.

  The invention of the present application further includes the above-described apparatus for conveying loose articles, a supply unit 3, and a weighing unit 4. The supply unit 3 supplies the loose articles M from the upper rear side of the conveyance unit 2, and The weighing unit 4 is a portion to be placed on the conveyance unit 2, and the weighing unit 4 is provided at a front end of the conveyance unit 2, and has a hopper unit 41 that can temporarily store the rose articles M sent from the conveyance unit 2. Each of the plurality of hopper parts 41 to 41 is provided with a plurality of individual weights of the stored rose articles M, and a plurality of combinations that constitute a combination in which the sum of the measured weights becomes a predetermined weight. Provided is a rose article conveying / metering device, wherein the rose article M is dropped from the hopper sections 41 to 41 and the weighed rose article M can be taken out.
  The hopper portion 41 can be implemented as a one-to-one relationship with the screw pair 2a.

  Only the screw pair 2a corresponding to the hopper portion 41 that has been emptied due to the falling of the rose article M is intermittently operated to send the rose article M to the hopper portion 41.

  Of the screw threads 22 in each of the transfer screws 21a and 21b with respect to the transfer screw 21a on the one side and the transfer screw 21b on the other side that constitute each of the screw pairs 2a, the thread diameter 22 of the screw threads 22 and 22 is larger than the thread diameter D1. The thread dimension 22b, which is a part where the diameter dimension is reduced, has a valley dimension X, which is a dimension in the front-rear direction, smaller than the average value Z of the longitudinal dimensions of the individual solid bodies Ma constituting the loose article M, The thread 22 in the transport screw 21a and the thread 22 in the other transport screw 21b may be symmetrically implemented.

  The thread 22 of the conveying screws 21a and 21b is formed by forming a spiral groove on the surface of the rod-shaped body, and the valley dimension X can be 2 mm to 5 mm.

  The one side conveying screw 21a and the other side conveying screw 21b constituting the screw pair 2a have the same thread diameters D1 and valley diameters D2 of the screw threads 22 and 22, and the one side conveying screw 21a. The distance Y between the central axis C of the conveying screw 21b on the other side and 21a is larger than the root diameter D2 of the threads 22 and 22 in each conveying screw 21a and 21b, and the mountain diameter D1 of each conveying screw 21a and 21b. The following may also be used.

  The supply unit 3 includes a charging hopper 31 and a distribution wheel 32, and the charging hopper 31 can temporarily store loose articles M, and has a charging port 31a on the upper side and a lower side. An outlet 31b is provided, and the distribution wheel 32 is provided at the outlet 31b of the charging hopper 31, and on the outer periphery of a cylindrical body having a rotating shaft 32b in a direction orthogonal to the conveying screws 21 to 21, The loose article M present in the charging hopper 31 is scooped and provided with a bucket portion 32a that can be rolled on the conveying screws 21 to 21, and the loosening portion 5 is in a direction perpendicular to the conveying screws 21 to 21. It has a rotating shaft 51, and the scraping portion 52 is a portion formed of a rod-like body that spirally curves so as to surround the rotating shaft 51, and the leveling portion 6 includes the conveying screw. The rotating shaft 61 is provided in a direction orthogonal to 1 to 21, and the scraped portion 62 constitutes at least each of the screw pairs 2 a between the one side conveying screw 21 a and the other side conveying screw 21 b. It can also be the part which consists of a plate-shaped body which is each located upwards and extends in the radial direction outer side from the said rotating shaft 61.
  The lead L of the screw thread 22 in each conveying screw 21 may be enlarged as it goes to the front F.

In addition, the rose article M which is the main object in the present invention is a product in which the solids Ma are loosely coupled with each other by moisture or oil. However, the present invention is not limited to this. For example, the present invention can be widely used for rose articles in a state in which solid materials are gathered, such as metal parts such as screws and wires, resin parts, pharmaceuticals, and gravel.

The transport device according to the present invention includes the loosening unit 5 and the leveling unit 6, thereby reducing variation in the amount of loose articles M in the front-rear direction. Moreover, the conveyance / weighing device according to the present invention can reduce the variation in the amount of loose articles M sent to the weighing unit 4 in the front-rear direction.

  Further, since the loose article M to be fed is supported by the screw thread top portion 22 a of the conveying screw 21, the loose article M is hardly caught between the thread valley portions 22 b of the conveying screw 21. Therefore, the burden of cleaning is small, and since the loose article M can be sent in a half-floating state, the quality of the loose article is not deteriorated by the conveyance.
  Further, since the hopper portion 41 is provided in a one-to-one relationship with the screw pair 2a, the loose article M can be conveyed for each hopper portion 41.

  Further, since the valley dimension X of the thread valley portion 22b is smaller than the average value Z of the longitudinal dimensions of the individual solid materials Ma, the loose article M is hardly caught between the thread valley portions 22b, and the cleaning burden Can be made smaller. Further, since the thread 22 on the one-side conveying screw 21a and the thread 22 on the other-side conveying screw 21b are in a symmetrical relationship, the loose article is not biased between the conveying screws 21a and 21b. I was able to send M.

  Further, the distance Y between the central axes C of the conveying screw 21a on one side and the conveying screw 21b on the other side is larger than the root diameter D2 of the threads 22 and 22 in the conveying screws 21a and 21b, and each conveying screw. Since the thread diameters 21a and 21b are equal to or less than the thread diameter D1, the thread 22 on the one-side transport screw 21a and the thread 22 on the other-side transport screw 21b can be alternately arranged in the front-rear direction. The gap between the screws 21a and 21b can be further reduced, and the loose article M can be hardly dropped from between the conveying screws 21a and 21b.

  In addition, as the lead L of the thread 22 in each conveying screw 21 expands toward the front F, as the loose article M is sent forward, the space between the solids Ma is sequentially widened, and the loose article is formed in the conveying unit 2. Since M can be spread thinly, the loose article M can be taken out from the front end of the apparatus in a desired state.

  Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings. 1 and 2 show the entire conveying / metering apparatus according to this embodiment, FIG. 3 shows a screw pair, and FIG. 4 shows a conveying screw.

  The apparatus of the present embodiment, as shown in FIGS. 1 and 2, can send a loose article M from the rear B to the front F and take out a predetermined weight of the rose article M at the front end, Each part of the conveyance part 2, the supply part 3, the loosening part 5, the leveling part 6, and the measurement part 4 is provided. The transport unit 2 extends in the front-rear direction, a supply unit 3 is provided at the upper rear end, and a measuring unit 4 is provided at the lower front end. The loosening unit 5 is provided between the supply unit 3 and the measuring unit 4, and the leveling unit 6 is provided between the unraveling unit 5 and the measuring unit 4.

  As shown in FIG. 1, the transport unit 2 includes a plurality of transport screws 21 to 21. As shown in FIGS. 3 and 4, the conveying screw 21 is provided with a thread 22 on the outer periphery, and has a central axis C extended in a linear direction. Therefore, the rotation center of each conveying screw 21 and the center axis C coincide with each other.

  The thread 22 provided on the conveying screw 21 according to the present embodiment is formed by forming a thread valley 22b in a spiral shape on the outer periphery of a metal pipe material such as stainless steel. The portion not formed is the screw thread top portion 22a. Thus, the conveying screw 21 according to the present embodiment has a completely different configuration from that in which a plate-like screw blade is attached to the outer periphery of the shaft portion like a conventional screw conveyor. However, as described later, the present invention does not exclude the adoption of the conventional conveying screw configuration.

  The thread 22 in this embodiment is as shown in FIG. 4A, and the thread diameter D1 is 44 mm and the valley diameter D2 is 41 mm. The thread valley portion 22b is a semicircular groove having a radius R of 2 mm, and the depth of this groove is 1.5 mm. The pitch P of the thread 22 is 8 mm.

  On the other hand, what is shown in FIG. 4B is one in which the pitch P of the thread 22 is reduced to 6 mm than that shown in FIG. Thus, the thread 22 can be implemented in various forms. In other words, the type of the thread 22 (shape of the thread valley portion 22b) is not limited to the round thread (semicircular shape) as in this embodiment, but is a square thread (rectangular shape), a trapezoidal thread (trapezoidal shape), and a triangular thread. (Triangular shape) may be sufficient. Further, like a conventional screw, a plate-like body or a linear body may be wound around and integrated with a shaft. The valley dimension X of the thread valley portion 22b will be described below.

  When the rotation direction of the conveying screw 21 is clockwise when viewed from the rear, like the conveying screw 21a on the left side shown in FIG. As in the case of the right conveying screw 21b shown in A), when it is counterclockwise when viewed from the rear, it is formed as a right-hand thread. As a result, the loose article M in contact with the upper side of the screw thread 22 is sent from the rear B to the front F as the conveying screw 21 rotates.

  And as shown in FIG. 3, the two parallel conveyance screws 21a and 21b are made into 1 set, and the screw pair 2a is comprised. The conveying unit 2 is configured by a plurality of screw pairs 2a arranged in parallel.

  A partition wall 2b is provided between the parallel screw pairs 2a and 2a. As shown in FIG. 3 (B), the partition wall 2b has a substantially W-shaped cross section, and surrounds the lower half of each conveying screw 21a, 21b of the screw pair 2a. This partition part 2b is provided in order to prevent the loose article M from spilling downward from between the conveying screws 21 and 21. However, there is almost no gap between the conveying screws 21a and 21b of each screw pair, as shown in FIG. 3, and the pitch of the thread 22 of the conveying screw 21 is larger than the individual solids Ma constituting the loose article M. Is small (details will be described later), it is almost impossible for the rose article M to fall downward.

  Further, a slight gap is provided between the inner surface of the partition wall portion 2b and the conveying screw 21 so that they do not rub against each other, and they fall from the loose article M and accumulate in the partition wall portion 2b. Liquids such as moisture and oil are sent to the front F so as to be scraped off by the thread 22 of the conveying screw 21.

  In the present embodiment, the thread diameters D1 and valley diameters D2 (see FIG. 4 (A)) of the screw threads 22 and 22 in the conveying screw 21a on one side and the conveying screw 21b on the other side, which constitute each screw pair 2a. Each is equal. As shown in FIG. 3 (A), the conveying screws 21a and 21b have screw threads 22 and 22 in a reverse screw relationship, and at the same position in the front-rear direction, the pitch P of the thread 22 and the lead L The same is true (see FIG. 4). Therefore, each conveyance screw 21a, 21b has a symmetrical relationship. In the case of the present embodiment, the conveying screw 21a on which the left screw is formed is arranged on the left side of the screw pair 2a when viewed from the rear B, and the conveying screw 21b on which the right screw is formed is arranged on the right side. Thereby, the loose article M can be sent without being biased between the conveying screws 21a and 21b.

  And the one side conveyance screw 21a and the other side conveyance screw 21b which comprise said screw pair 2a shall mutually reversely rotate, as shown in FIG. As a result, the loose article M is placed forward on the thread 22 of the conveying screws 21a and 21b for each screw pair 2a. More specifically, it is fed forward by friction between the thread crest 22a and the loose article M.

  As shown in FIG. 3B, the conveying screw 21a on one side and the conveying screw 21b on the other side, which constitute the screw pair 2a as described above, rotate in the reverse direction in the winding direction on the upper side. The loose article M is brought close to the valley portion above the conveying screws 21a and 21b.

  And the trough dimension X which is the dimension in the front-rear direction of the thread trough portion 22b of the thread 22 in each of the conveying screws 21a and 21b is based on the average value Z of the longitudinal dimension in each solid material Ma constituting the loose article M. Are also considered small. Here, the average value Z of the longitudinal dimension is defined as the average value of the entire rose article M of the linear distance between one end and the other end in the longitudinal direction of each solid Ma (FIG. 4 (C)). More precisely, the above average value is an average value in an aggregate in which a part is randomly extracted from the entire rose article M.

  The rose article M assumed in the present embodiment is one in which the solid materials Ma are loosely bonded to each other due to moisture or oil. Since this kind of loose article M is gathered in a state in which the solid matter Ma is intertwined, the loose article M sent by the transport unit 2 is the top of the thread of the transport screw 21 as shown in FIG. It can be supported by the portion 22a and hardly touches the thread valley portion 22b. That is, since the loose article M is rarely caught between the thread valley portions 22b, the cleaning work can be easily performed. When the loose article M is a food, it is not easy to keep the apparatus clean. There is a merit that it does not take. In addition, since the loose article M can be sent by the conveying unit 2 in a half-floating state, it is difficult to be deformed. Therefore, the rose article M that remains sandwiched between the screw thread valley portions 22b as in the conventional case occurs, and this causes a problem of increasing the burden of screw cleaning or reducing the freshness of the rose article M. The problem of being damaged by being pressed by the screw thread 22 is unlikely to occur.

  Note that the present invention does not exclude that a part of the rose article M accidentally falls into the valley portion 22b during conveyance, and most of the rose article M is conveyed while being supported by the top portion 22a of the thread. Anything is acceptable.

  In the present embodiment, the distance Y (see FIG. 3) between the central axes C of the conveying screw 21a on one side and the conveying screw 21b on the other side is set to be slightly larger than the mountain diameter D1 of each conveying screw 21a, 21b. ing. As described above, the pitch P of the thread 22 in each of the conveying screws 21a and 21b is set to be smaller than the average value Z of the longitudinal dimension of the solid material Ma, and the loose article M is threaded as described above. Since it is supported by the top part 22a, it can be almost eliminated that the rose article M falls downward through the conveying screws 21a and 21b.

  In the present embodiment, as described above, the thread 22 of the conveying screws 21a and 21b constituting each screw pair 2a is not overlapped in the front-rear direction. However, depending on the shape of the thread 22, The distance Y between the center axes C of the conveying screw 21a and the conveying screw 21b on the other side is larger than the root diameter D2 of the threads 22 and 22 in the conveying screws 21a and 21b, and the peaks of the conveying screws 21a and 21b. The diameter D1 or less, that is, the thread 22 of the conveying screws 21a and 21b may be alternated.

  In this way, the thread 22 on the one-side conveying screw 21a and the thread 22 on the other-side conveying screw 21b can be alternately arranged in the front-rear direction, and can be bite. Thereby, the clearance gap between each conveyance screw 21a, 21b can be made smaller, and the loose article M can be made hard to fall from between each conveyance screw 21a, 21b.

  In the present embodiment, the lead L of the thread 22 in the conveying screw 21 is constant in the front-rear direction, but the valley dimension X of the thread valley 22b is based on the average value Z of the longitudinal dimension of the solid Ma. The lead L may be enlarged toward the front F within a range that satisfies the condition of “small”. For example, as shown in FIG. 5, the middle lead L2 is larger than the rear lead L1, and the front lead L3 is larger than the middle lead L2.

  In such a case, as the loose article M is sent forward, the space between the solids Ma can be sequentially expanded in accordance with the enlargement of the leads L. The loose article M can be taken out from the front end of the apparatus in a desired state.

  Next, the supply unit 3 is a part for supplying the loose article M from the upper rear side of the transport unit 2 and placing it on the transport unit 2. The supply unit 3 includes a charging hopper 31 and a distribution wheel 32.

  The charging hopper 31 can temporarily store loose articles M, and includes a charging port 31a on the upper side and an outlet 31b on the lower side. The input port 31a is wide and the output port 31b is formed narrow, so that the loose article M can be input easily. In this embodiment, since the loose article M is thrown into the throwing opening 31a by manual work or dropping from another conveyor, the throwing hopper 31 has such a shape. Depending on the method for sending the message, it can be implemented in various forms.

  The distribution wheel 32 is provided at the outlet 31b of the charging hopper 31 and exists in the charging hopper 31 on the outer periphery of a cylindrical body 32c having a rotation shaft 32b in a direction orthogonal to the conveying screws 21 to 21. A bucket portion 32a is provided which can scoop up the loose article M and spread it on the conveying screws 21 to 21. In the present embodiment, the cylindrical body 32c is formed in a cylindrical shape, and the bucket portion 32a is formed in a substantially circumferential direction (on the drawing) after the plate-like body is radially extended from the outer peripheral surface of the cylindrical body 32c. The rose article M can be coordinated in the space between the bucket portion 32a and the cylindrical body 32c.

  In this embodiment, the distribution wheel 32 is counterclockwise in the drawing. The bucket part 32a enters from the right side of the take-out port 31b in the figure, and the rose article M in the charging hopper 31 enters the bucket part 32a while moving to the left by the rotation of the distribution wheel 32. Then, the distribution wheel 32 continues to rotate, and the rose articles M can be dropped one after another from above the transport unit 2.

  The loosening unit 5 is configured to make the conveyance amount of the loose article M between the screw pairs 2a to 2a substantially equal. The loosening unit 5 includes a rotating shaft 51 in a direction orthogonal to the conveying screws 21 to 21, and a scraping portion 52 on the radially outer side of the rotating shaft 51.

  The scraping unit 52 can move the loose article M placed on each of the conveying screws 21 to 21 mainly in a direction crossing the axis of each of the conveying screws 21, and extends from the rotating shaft 51. It is a portion made of a rod-like body that is spirally curved so as to surround the rotation shaft 51. As shown in FIG. 2, the scraping unit 52 contacts the rose article M above the transport unit 2. However, since the scraping unit 52 is formed in a spiral shape as described above, The part can be pushed in an oblique direction with respect to the respective conveying screws 21 to 21. Thereby, the loose article M that is still dropped from the bucket portion 32a of the distribution wheel 32 can be loosened.

  In the present embodiment, the rotation direction of the rotation shaft 51 is switched between forward rotation and reverse rotation. Thereby, the direction in which the scraping portion 52 pushes the loose article B can be switched between forward rotation and reverse rotation, and the loose article B can be loosened evenly.

  A leveling portion 6 is provided behind the unwinding portion 5. The leveling portion 6 is provided with a rotating shaft 61 provided in a direction orthogonal to the conveying screws 21 to 21 and a scraped portion 62 for pressing the loose article M from above around the rotating shaft 61. ing. The crushed portion 62 can move the loose article M placed on the conveying screws 21 to 21 mainly in the direction along the axis of the conveying screws 21.

  As shown in FIG. 2, the scraped portion 62 in the present embodiment is a plate-like body provided on the outer side in the radial direction of the rotating shaft 61, and the tip portion is slightly curved. As shown in FIG. 1, at least the scraped portion 62 is positioned above the one side conveying screw 21a and the other side conveying screw 21b, which constitute each of the screw pairs 2a. In addition, by rotating around the rotation shaft 61, the loose article M placed on the conveying screws 21a and 21b can be rubbed in the front-rear direction to make the thickness uniform. The loosening part 5 and the leveling part 6 can reduce variations in the amount of loose articles M sent to the weighing part 4 in the front-rear direction.

  The weighing unit 4 is based on the same principle as that disclosed in Patent Document 2, and includes a plurality of hopper units 41 that can temporarily store loose articles M sent from the transport unit 2. The hopper portion 41 is provided in a one-to-one relationship with the screw pair 2a. In the present embodiment, two hopper portions 41 are provided below the pool hopper portion 41a provided in a one-to-one relationship with the screw pair 2a as described above and one pool hopper portion 41a. The weighing hopper 41b receives the rose article M distributed in two from the pool hopper 41a (see FIG. 6).

  And each weight of the stored rose article M is always measured by the microcomputer etc. for every some hopper parts 41-41, and the combination of the said measured weight comprises the predetermined weight. The rose articles M are dropped from the plurality of hopper portions 41 to 41, and the measured rose articles M can be taken out. In the present embodiment, the above-described measurement and take-out are performed for the weighing hopper 41b, and the pool hopper 41a is a part that delivers the loose article M from the transport unit 2 to the weighing hopper 41b.

  Here, in this embodiment, the respective units 2 to 6 are operated at regular intervals by timer control. However, a sensor is provided in the transport unit 2 or the hopper units 41 to 41 so that the amount of the loose article M is increased. It is good also as what operates intermittently by detecting.

  In the above case, only the screw pair 2a corresponding to the empty hopper portion 41 operates intermittently in order to replenish the empty hopper portion 41 with the rose article M taken out. The rose article M is sent. If it carries out like this, since the loose article M can be conveyed for every hopper part 41, conveyance without waste is possible.

It is the schematic of planar view which shows the whole conveyance and measurement apparatus which concerns on a present Example. It is the schematic of the side view which shows the whole conveyance and weighing device which concerns on a present Example. (A) is a principal part top view which shows the screw pair which concerns on a present Example, (B) is the same front view. (A) is a principal part side view which shows the conveyance screw which concerns on a present Example, (B) is a principal part side view which shows the conveyance screw which changed the pitch of the screw thread, (C) is the shape of solid substance It is a figure which shows the example of. It is a principal part side view which shows the conveyance screw which the lead | read | reed of a screw thread is expanding sequentially. It is the schematic which shows the relationship between the conveyance part which concerns on a present Example, and a measurement part.

DESCRIPTION OF SYMBOLS 1 Conveyance / weighing device 2 Conveying part 2a Screw pair 21 Conveying screw 21a Conveying screw 21a on one side Conveying screw 22b on the other side 22 Thread 22a Threaded top 22b Threaded valley 3 Supplied part 31 Input hopper 31a Input 31b 32 Distributing wheel 32a Bucket portion 32b Rotating shaft 4 Weighing portion 41 Hopper portion 5 Unwinding portion 51 Rotating shaft 52 Scraping portion 6 Leveling portion 61 Rotating shaft 62 Shaved portion B Rear C Center axis D1 Thread diameter D2 Thread diameter Valley diameter F Forward L Thread lead M Loose article Ma Solid X Thread valley dimension Y Distance between central axes between conveying screws Z Average value of longitudinal dimension of solid

Claims (9)

A transport unit (2) capable of sending a rose article (M), which is an aggregate of solid matter (Ma), from the rear (B) to the front (F),
The said conveyance part (2) is provided with the some conveyance screw (21a, 21b) ,
The loose article (M) is placed on the thread (22) of each conveying screw (21a, 21b) and sent forward (F), and the sent loose article (M) is the thread. In the transport device supported by the top (22a) of (22),
Each of the above conveying screws (21a, 21b) is provided with a screw thread (22) on the outer periphery and a central axis (C) extending in a linear direction,
A screw pair (2a) in which two parallel conveying screws (21a, 21b) are set as one set is configured,
The one side conveying screw (21a) and the other side conveying screw (21b) constituting the screw pair (2a) are such that the screw threads (22) are in a reverse screw relationship with each other and on the upper side. In the direction of entanglement, they are supposed to rotate in reverse from each other,
The conveying section (2) is configured by a plurality of the screw pairs (2a) being arranged in parallel,
The transport unit (2) includes a loosening unit (5) and a leveling unit (6),
The loosening portion (5) is placed on the conveying screws (21a, 21b) so that the conveying amount of the loose article (M) between the conveying screws (21a, 21b) is substantially equal. A scraping part (52) for moving the loose article (M) in a direction intersecting at least the axis of each of the conveying screws (21a, 21b) ,
The leveling part (6) is provided on the front (F) side of the loosening part (5), and at least the individual articles (M) placed on the respective conveying screws (21a, 21b). A device for conveying loose articles, comprising a scraped portion (62) that moves in a direction along the axis of the screw (21a, 21b) . Each screw pair (2a) constituting the above-mentioned one side conveying screw (21a) and the other side conveying screw (21b),
Of the thread (22) in each conveying screw (21a, 21b), the thread valley (22b), which is a portion whose diameter is reduced compared to the thread diameter (D1) of each thread (22, 22), The valley dimension (X) which is the dimension in the front-rear direction is smaller than the average value (Z) of the longitudinal dimension in the individual solid bodies (Ma) constituting the rose article (M),
The screw thread (22) in the one-side conveying screw (21a) and the screw thread (22) in the other-side conveying screw (21b) are in a symmetrical relationship. A device for conveying loose articles. The thread (22) of the conveying screw (21a, 21b) is formed by forming a spiral groove on the surface of the rod-shaped body, and the valley dimension (X) is 2 mm to 5 mm. The apparatus for conveying loose articles according to claim 2 , wherein the apparatus is characterized by the following. The thread diameter (D1) and the valley diameter (D2) of each screw thread (22, 22) in the conveying screw (21a) on one side and the conveying screw (21b) on the other side, which constitute each screw pair (2a). Are equal,
The distance (Y) between the central axes (C) of the conveying screw (21a) on the one side and the conveying screw (21b) on the other side is the valley of the thread (22, 22) in each conveying screw (21a, 21b). The apparatus for conveying loose articles according to claim 1, characterized in that it is larger than the diameter (D2) and not more than the peak diameter (D1) of each conveying screw (21a, 21b). 5. The lead (L ) of the screw thread (22 ) in each conveying screw (21 a, 21 b) is enlarged as it goes toward the front (F). 5. Rose article conveying device. The apparatus for conveying loose articles according to any one of claims 1 to 5, a supply unit (3), and a weighing unit (4),
The supply unit (3) is a part that supplies the rose article (M) from the upper rear side of the transport unit (2) and places it on the transport unit (2).
The weighing unit (4) is provided at the front end of the transport unit (2), and has a hopper unit (41) that can temporarily store a rose article (M) sent from the transport unit (2). There are several,
A plurality of hoppers constituting a combination in which the individual weights of the stored rose articles (M) are measured for each of the plurality of hopper parts (41 to 41), and the sum of the measured weights becomes a predetermined weight. The rose article (M) is dropped from the sections (41 to 41), and the weighed rose article (M) can be taken out.   The apparatus according to claim 6, wherein the hopper (41) is provided in a one-to-one relationship with the screw pair (2a).   Due to the fall of the loose article (M), only the screw pair (2a) corresponding to the empty hopper part (41) operates intermittently, and the loose article (M) is moved into the hopper part (41). The apparatus for transporting and weighing loose articles according to claim 7, wherein: The supply unit (3) includes a charging hopper (31) and a distribution wheel (32),
The charging hopper (31) can temporarily store loose articles (M), and includes a charging port (31a) on the upper side and an outlet (31b) on the lower side.
The distribution wheel (32) is provided at an outlet (31b) of the charging hopper (31), and is a cylindrical body having a rotation shaft (32b) in a direction orthogonal to the conveying screws (21a, 21b) . On the outer periphery, there is provided a bucket part (32a) capable of scooping the loose article (M) present in the charging hopper (31) and rolling it on the conveying screw (21a, 21b) ,
The loosening part (5) has a rotating shaft (51) in a direction perpendicular to the conveying screw (21a, 21b) ,
The scraping portion (52) is a portion made of a rod-like body that spirally curves so as to surround the rotating shaft (51),
The leveling part (6) has a rotating shaft (61) in a direction orthogonal to the conveying screw (21a, 21b) ,
The crushed portion (62) is located at least above the one side conveying screw (21a) and the other side conveying screw (21b), respectively, constituting each of the screw pairs (2a). The apparatus for transporting and weighing loose articles according to any one of claims 6 to 8 , wherein the apparatus is a portion made of a plate-like body extending radially outward from the rotating shaft (61).

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