JP2006275900A - Powder metering apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a powder metering apparatus for lessening a storing amount in a hopper of powder being a metering object while maintaining an accuracy of metering. <P>SOLUTION: The powder metering apparatus comprises a powder storing means 14 provided with a storing part 13 for storing a prescribed amount of powder 5, and a powder feed means 15 for feeding the prescribed amount of the powder 5 to the storing part 13 of the powder storing means 14. The powder feed means 15 comprises: a storing part 23 arranged on the upper side of the powder storing means 14 and for storing the powder 5; a feed opening 21 arranged downward toward the storing part 13 on the lower side of the storing part 23; and a powder delivering means 25 arranged between the storing part 23 and the feed opening 21 and for delivering the powder 5 of the side of the storing part 23 to the side of the feed opening 21. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a powder metering device for measuring powder by a predetermined amount.

  Disposable body warmers that are widely used in general are in a state in which a body of a warmer containing a heat generating agent containing magnetic powder in a breathable flat bag body is hermetically sealed in a non-breathable outer bag. When the body bag is taken out by breaking the outer bag at the time of use, oxygen in the air passes through the bag body and reacts with the magnetic powder, so that the heat generating agent generates heat.

  This kind of disposable body warmer manufacturing apparatus includes a heat generating agent measuring device that measures the heat generating agent for each hand warmer, a heat generating agent enclosing device that encloses the heat generating agent measured by the heat generating agent measuring device in a bag body, A warmer body sealing device for sealing a warmer body in which a heat generating agent is sealed by an agent sealing device in an exterior bag is provided.

  Among such disposable body warmer manufacturing apparatuses, the exothermic metering device includes a measuring drum having a plurality of housing portions formed on the outer peripheral surface and driven to rotate about a substantially horizontal axis, and stores the exothermic agent. An apparatus including a hopper for supplying a heat generating agent to the housing portion of the measuring drum is already known (see, for example, Patent Document 1).

  In this type of exothermic metering device, the hopper is arranged close to one side of the measuring drum, the upper side is provided with an inlet for introducing the exothermic agent, and the lower side is provided with the exothermic agent. A supply port for supplying to the measuring drum side is provided in a laterally open shape toward the outer peripheral surface of the measuring drum, and the bottom surface is formed in a slanted shape on the supply port side.

  Each of the storage drums is formed in a capacity capable of storing a heating agent for one body warmer, and is rotationally driven at a predetermined speed in a direction of passing upward through the supply port of the hopper.

The exothermic agent introduced into the hopper from the introduction port is guided to the supply port side along the inclination of the bottom surface by its own weight, and flows into the accommodating portion from the side of the measuring drum. The exothermic agent that has flowed into the housing portion is scraped off by the scraper provided on the upper end side of the supply port when the housing portion is pulled upward from the supply port of the hopper, and the amount remaining in the housing portion is It is delivered to the heat generating agent sealing device side on the downstream side.
JP 2005-029187 A

  In the conventional exothermic agent metering device, the exothermic agent put into the hopper is configured to flow into the accommodating portion along its slope by its own weight. Therefore, it is necessary to always store a large amount of the heat generating agent in the hopper so that sufficient pressure acts on the heat generating agent on the downstream side.

  By the way, as described above, the heat generating agent used in the disposable body warmer reacts with oxygen in the air to generate heat, so that it gradually oxidizes over time while being stored in the hopper. Go ahead. Therefore, it is necessary to use the exothermic agent put into the hopper as quickly as possible to make a product. For example, when the manufacturing apparatus is stopped for a long time for maintenance of the manufacturing apparatus, The remaining heat generating agent must be discarded.

  However, in the conventional heat generating agent lightweight device, it is necessary to always store a large amount of heat generating agent in the hopper while the manufacturing device is operating. The pyrogens remained and were very uneconomical because they had to be discarded.

  In addition, not only exothermic agents, but also the powders that are subject to measurement by the powder-measuring device usually deteriorate in quality over time, so the amount of powder stored in the hopper is the minimum necessary. It is desirable to keep the powder material charged in the hopper as short as possible.

  In view of such a conventional problem, the present invention provides a powder measuring device capable of reducing the amount of powder stored in a hopper while maintaining accuracy of measurement. The purpose is to do.

  The present invention includes a powder material storage means 14 having a storage portion 13 capable of storing a predetermined amount of powder material 5, and the predetermined amount of powder material 5 in the storage portion 13 of the powder material storage means 14. In the powder material metering device provided with the powder material supply means 15 for supplying the powder material, the powder material supply means 15 is arranged above the powder material storage means 14 and can store the powder material 5 A storage part 23, a supply port 21 disposed below the storage part 23 toward the storage part 13, and the storage part 23 between the storage part 23 and the supply port 21. And a powder material feeding means 25 for feeding the powder material 5 on the 23 side to the supply port 21 side.

  According to the present invention, the powder material 5 can be reliably filled into the storage portion 13 regardless of the amount of the powder material 5 stored in the storage portion 23, and the measurement target is maintained while maintaining the accuracy of measurement. It is possible to reduce the storage amount of the powder material 5 in the storage unit 23. As a result, when the apparatus is stopped for maintenance or the like, the amount of the powder material 5 remaining in the storage unit 23, that is, the amount of the powder material 5 to be discarded can be minimized, which is economical.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 to 4 illustrate a first embodiment in which the powder material measuring device according to the present invention is applied to a heating agent measuring device for a disposable body warmer.

  FIG. 4 shows an example of the disposable body warmer 2 manufactured by the disposable body warmer manufacturing apparatus 1 according to this embodiment. The disposable body warmer 2 includes a body warmer body 3 and an outer bag 4 that covers the outside of the body warmer body 3.

  The body 3 is obtained by enclosing a powdery exothermic agent (powder material) 5 in a substantially flat bag body 6. The exothermic agent 5 is a mixed powder in which, for example, magnetic powder such as iron powder, water, vermiculite, activated carbon, salts and the like are mixed, and is configured to generate heat by reacting with oxygen. As the exothermic agent 5, a general material for disposable warmers can be used, and the composition thereof can be appropriately changed according to the characteristics of the product, for example, exothermic temperature and duration.

  The bag body 6 is configured so that at least a part thereof has air permeability so that oxygen can be supplied to the internal heat generating agent 5. For example, a substantially air-permeable sheet 7 and a non-air-permeable sheet 8 having substantially the same shape are provided at the periphery of the bag body 6. It is formed in a substantially flat bag shape by sealing with each other. As the breathable sheet 7, for example, a synthetic resin film laminated on the inside of a non-woven sheet and perforated with minute ventilation holes is used, and as the non-breathable sheet 8, for example, a non-breathable synthetic resin film is used. Has been.

  The exterior bag 4 is formed, for example, by sealing two non-breathable sheets at the peripheral edge thereof, and covers the warmer body 3 in an airtight manner so that the warmer body 3 can be used until the warmer body 3 is used. The supply of oxygen is cut off.

  FIG. 1 shows the above-described disposable warmer manufacturing apparatus 1 used for manufacturing the disposable warmer 2, which is measured by the exothermic agent measuring device 11 that measures the exothermic agent 5 by a predetermined amount and the exothermic agent measuring device 11. The exothermic agent enclosure device 12 which encloses the exothermic agent 5 in the bag body 6 is shown.

  As shown in FIGS. 1 and 2, the exothermic metering device 11 includes a measuring drum (powder storage unit) 14 including a concave measuring-side accommodating unit (accommodating unit) 13 that can accommodate the exothermic agent 5, and A heating agent supply means (powder supply means) 15 is provided for supplying the heating agent 5 to the measurement side accommodating portion 13 of the measurement drum 14.

  The metering drum 14 is disposed between the metering drum body 16 and the heat generating agent holding means 17, the substantially cylindrical measuring drum body 16, the heat generating agent holding means 17 disposed on the inner peripheral side of the measuring drum main body 16. Holding force blocking means 18.

  The measuring drum body 16 is disposed sideways so that the center shaft 19 is substantially horizontal, and is rotatably supported by the bearing 20 on the center shaft 19, and the driving force of a predetermined driving means (not shown) is the center. By being transmitted to the shaft 19, it rotates at a predetermined speed in a predetermined direction, for example, counterclockwise in FIG. The measuring drum body 16 is connected to the central shaft 19 via a side plate 16a attached to one end side in the axial direction, for example.

  The measuring drum main body 16 is made of a non-magnetic material such as stainless steel, and the measuring-side accommodating portion 13 is provided on the outer peripheral surface thereof. A plurality of (for example, twelve) measuring-side accommodating portions 13 are arranged at equal intervals in the circumferential direction of the measuring drum main body 16, and the circumferential arrangement is one or more rows (for example, four rows) in the axial direction. Is provided.

  The measuring side accommodating portion 13 is formed in, for example, a rectangular shape having a substantially constant depth according to the shape of the body body 3 to be manufactured, and can accommodate the heating agent 5 corresponding to one disposable body warmer 2. Yes.

  The exothermic agent holding means 17 holds the exothermic agent 5 accommodated in the measuring side accommodating portion 13 in the measuring side accommodating portion 13, and is constituted by a permanent magnet capable of adsorbing the exothermic agent 5 containing magnetic powder, for example. The measuring drum body 16 is arranged on the inner peripheral side of the measuring drum main body 16 so as to correspond to the measuring side accommodating portions 13 and rotates together with the measuring drum main body 16.

  The holding force blocking means 18 blocks the holding force of the heat generating agent 5 by the heat generating agent holding means 17 and is constituted by a shielding plate such as an iron plate that can shield the magnetic force from the heat generating agent holding means 17. Corresponding to the transfer position A for transferring the heat generating agent 5 held in the accommodating portion 13 to the heat generating agent sealing device 12 side, it is arranged between the measuring drum main body 16 and the heat generating agent holding means 17.

  The holding force blocking means 18 is separated from the driving system of the measuring drum main body 16 and is fixedly supported, and does not rotate even if the measuring drum main body 16 and the heating agent holding means 17 rotate.

  The exothermic agent supply means 15 is disposed on the upper side of the measuring drum 14 in correspondence with, for example, the uppermost portion, and is close to the upper side of the outer peripheral surface of the measuring drum body 16 as shown in FIGS. A storage supply case 24 having a supply port 21 arranged substantially downward, a storage unit 23 connected to the upper side of the supply port 21 and capable of storing the heat generating agent 5 supplied from the input port 22 on the upper side. And a heating agent feeding means (powder material) that is disposed between the supply port 21 and the storage portion 23 on the storage supply case 24 and feeds the heat generating agent 5 on the storage portion 23 side to the lower supply port 21 side. (Feeding means) 25 and a scraper 26 which is provided near the downstream side in the rotation direction of the measuring drum 14 with respect to the supply port 21 and scrapes off the exothermic agent 5 overflowing from the measuring side accommodating portion 13 from the outer peripheral surface of the measuring drum main body 16. And be prepared To have.

  Furthermore, in the intermediate portion in the vertical direction of the storage portion 23, a storage amount adjustment feeding means (storage amount adjustment means) for feeding the heat generating agent 5 in the upper storage portion 23a above it to the lower lower storage portion 23b side. 27 is arranged.

  The storage and supply case 24 includes a front wall 28 and a rear wall 29 that are arranged on the downstream side and the upstream side in the rotational direction along the axial direction of the measuring drum 14, and a pair of axially opposite ends of the measuring drum 14. The side walls 30 and 30 are formed in a substantially rectangular shape in cross section, and the lower end side is a supply port 21 and the upper end side is an input port 22.

  The supply port 21 has an axial width that spans all of one or a plurality (for example, four) of the measurement-side storage units 13 arranged in the axial direction of the measurement drum 14, and the circumferential direction of the single measurement-side storage unit 13. The circumferential width is smaller than the length.

  The exothermic agent feeding means 25 includes a substantially cylindrical feeding roll 31 and a feeding driving means 32 that rotationally drives the feeding roll 31.

  The feeding roll 31 is formed with, for example, an axial feeding groove 33 over the entire circumference on the outer peripheral surface thereof, and is parallel to the measuring drum 14 so as to substantially close the connecting portion between the storage portion 23 and the supply port 21. The rotating shaft 34 is disposed and rotatably supported by bearings 35 and 35 provided on the side wall 30 of the storage and supply case 24, for example.

  The feed driving means 32 is constituted by, for example, a stepping motor, and the drive shaft 32 a is connected to the rotating shaft 34 of the feed roll 31. For example, the heating agent 5 is fed downward along the front wall 28 of the storage supply case 24. Thus, the feeding roll 31 is rotationally driven at a predetermined speed in the counterclockwise direction in FIG.

  The storage part 23 is formed with, for example, a widened part 36 whose cross-sectional area increases toward the upper side on the lower storage part 23b side. In the widened portion 36, for example, the axial width does not change, and the circumferential width, that is, the width of the side walls 30, 30 gradually increases, for example, only on one side in the circumferential direction, for example, upstream in the rotational direction of the measuring drum 14. An inclined surface 37 is formed on the rear wall 29 so as to fall forward.

  Further, for example, on the rear wall 29 side of the lower storage part 23b, a storage amount detection means 38 for detecting the storage amount of the heat generating agent 5 in the lower storage part 23b is provided. The storage amount detection means 38 is configured by a photo sensor, a proximity switch, and the like. For example, when the storage amount of the heat generating agent 5 in the lower storage portion 23b is equal to or greater than a predetermined amount, the storage amount detection means 38 is ON (or OFF). Is switched to OFF (or ON).

  The storage amount adjustment feed unit 27 includes a substantially cylindrical feed roll 41 and a feed drive means 42 that rotationally drives the feed roll 41.

  In the same way as the feeding roll 31, the feeding roll 41 is formed so that an axial feeding groove 43 is formed over the entire circumference on the outer peripheral surface thereof, and the connecting portion between the upper storage portion 23a and the lower storage portion 23b is substantially closed. The rotating shaft 44 is disposed in parallel with the drum 14 and is rotatably held by bearings 44 a and 44 a provided on the side wall 30 of the storage and supply case 24, for example.

  The feeding drive means 42 is constituted by, for example, a stepping motor, and its drive shaft 42 a is connected to the rotating shaft 44 of the feeding roll 41. For example, the heating agent 5 is fed downward along the front wall 28 of the storage supply case 24. In this way, the feeding roll 41 is driven to rotate counterclockwise in FIG. In addition, the rotation direction of the supply roll 41 may be any.

  Further, the feeding drive means 42 is controlled by the storage amount control means 45 so as to keep the storage amount of the heat generating agent 5 in the lower storage portion 23b substantially constant. That is, the storage amount control unit 45 is based on the detection result of the storage amount detection unit 38, for example, when the storage amount detection unit 38 is ON (the storage amount of the heat generating agent 5 in the lower storage unit 23b is greater than or equal to a predetermined amount). Stops the operation of the delivery drive means 42, and when the storage amount detection means 38 is turned off, the delivery drive means 42 is operated until at least the storage amount detection means 38 is turned on. The exothermic agent 5 on the part 23a side is fed out to the lower storage part 23b side.

  The scraper 26 is formed in a thin plate shape with a stainless material or the like, and is disposed along the axial direction of the measuring drum 14 so that the scraping portion 46 on the lower edge side contacts the outer peripheral surface of the measuring drum body 16 from above. For example, it is detachably attached to the front wall 28 of the storage and supply case 24 via an attachment member 47. Note that the scraper 26 may be formed of a metal other than stainless steel, a synthetic resin, or the like as long as it is an elastically deformable material.

  The scraper 26 is disposed along the axial direction of the measuring drum 14 so as to straddle at least one or a plurality of (for example, four) measuring-side accommodating portions 13 arranged in the axial direction of the measuring drum 14.

  The exothermic agent sealing device 12 includes a seal drum 51 that is close to the measuring drum 14 at the transfer position A, and a heat roll 52 that is in contact with the seal drum 51 at a seal position B downstream of the transfer position A.

  The seal drum 51 includes a substantially cylindrical seal drum main body 53 and a heat generating agent holding means 54 disposed on the inner peripheral side of the seal drum main body 53.

  The seal drum main body 53 is arranged in parallel to the measuring drum 14 so as to approach or abut the measuring drum 14 at the transfer position A, and is rotationally driven in the rotation direction at substantially the same peripheral speed as the measuring drum 14. Yes.

  The seal drum main body 53 is made of, for example, a nonmagnetic material such as stainless steel, and has an outer diameter that is substantially the same as that of the measuring drum main body 16. However, the outer diameter of the seal drum main body 53 and the measuring drum main body 16 is the same. May be different.

  On the outer peripheral surface of the seal drum main body 53, a concave seal side accommodation portion 55 capable of accommodating the heat generating agent 5 is respectively provided in the circumferential direction and the axial direction so as to correspond to the measurement side accommodation portion 13 on the measurement drum 14 side. A predetermined number, for example, 12 in the circumferential direction and 4 rows in the axial direction are arranged. When the outer diameter of the seal drum main body 53 is different from the outer diameter of the measuring drum main body 16, the number of seal-side accommodation portions 55 arranged in the circumferential direction is different from the number of arrangement of the measurement-side accommodation portions 13 in the circumferential direction. Needless to say.

  The exothermic agent holding means 54 transfers the exothermic agent 5 in the measuring side accommodating portion 13 on the measuring drum 14 side to the seal side accommodating portion 55 side at the transfer position A, and the transferred exothermic agent 5 to the seal side accommodating portion. 55, and is formed of, for example, a permanent magnet that can adsorb the heat generating agent 5 including magnetic powder, and is disposed on the inner peripheral side of the seal drum main body 53 corresponding to each seal-side accommodation portion 55. It rotates with the seal drum body 53.

  On the outer peripheral surface of the seal drum main body 53, a wide and long air-permeable sheet 7 fed from a raw fabric roll (not shown) is wound at a predetermined tension from at least the upstream side of the transfer position A to the seal position B. It is hung. Accordingly, at the transfer position A, the heat generating agent 5 in the measurement side housing portion 13 is adsorbed by the heat generating agent holding means 54 via the breathable sheet 7 and is housed in the seal side housing portion 55. At this time, the air-permeable sheet 7 is in a state of being substantially in close contact with the inner surface side of the seal-side accommodation portion 55 by the heat generating agent 5.

  The heat roll 52 corresponds to a portion (hereinafter referred to as a seal surface 56) of the breathable sheet 7 and the non-breathable sheet 8 around the exothermic agent 5, that is, the outer peripheral surface of the seal drum main body 53 excluding the seal side accommodation portion 55. The heat generating agent 5 is sealed by sealing in the form of vertical and horizontal grids, arranged parallel to the seal drum 51, and rolled to the outer peripheral surface of the seal drum 51 via both sheets 7 and 8 at the seal position B. It is touched.

  A concave portion 57 is provided on the outer peripheral surface of the heat roll 52 so as to correspond to the seal-side accommodation portion 55 on the seal drum 51 side, and a portion excluding the concave portion 57 on the outer peripheral surface is a seal surface on the seal drum main body 53 side. The air-permeable sheet 7 and the non-air-permeable sheet 8 are sandwiched between and the sealing surface 58 to be sealed.

  On the outer peripheral surface of the heat roll 52, a wide and long non-breathable sheet 8 fed from a raw roll (not shown) is wound with a predetermined tension from the sealing position B to the upstream side.

  The seal drum 51 and the heat roll 52 are each provided with a heat source (not shown) so that at least the seal surfaces 56 and 58 are heated.

  Operation | movement of the disposable body warmer manufacturing apparatus 1 demonstrated above is demonstrated. First, before operating the disposable body warmer manufacturing apparatus 1, a predetermined amount of the heat generating agent 5 is charged into the upper storage portion 23 a of the heat generating agent supply means 15 from the charging port 22, and the storage amount is adjusted by the control of the storage amount control means 45. The feeding means 27 is activated. That is, the feeding roll 41 is rotated by the feeding driving means 42, and the heat generating agent 5 on the upper storage part 23a side is sequentially delivered to the lower storage part 23b side. The operation of the storage amount adjustment feeding unit 27 is continued until it is detected by at least the storage amount detection unit 38 and then stopped.

  The exothermic agent 5 supplied to the lower storage portion 23 b side by the storage amount adjusting and feeding means 27 is guided to the feeding side by the feeding roll 31, that is, the front wall 28 side by the inclined surface 37, for example, and accumulated on the upper side of the feeding roll 31. The

  When the operation of the disposable body warmer manufacturing apparatus 1 is started and the measuring drum 14 starts to rotate in a predetermined direction, the exothermic agent feeding means 25 also starts to operate in synchronization therewith. That is, the feeding roll 31 is rotated at, for example, a constant speed by the feeding driving means 32, and the heat generating agent 5 in the lower storage portion 23b is sequentially fed downward. The exothermic agent 5 fed downward by the feed roll 31 naturally falls on the outer peripheral surface of the rotating measuring drum main body 16 through the supply port 21. Thereby, when each measurement side accommodating part 13 passes the lower side of the supply port 21, the heat generating agent 5 is sequentially filled toward the upstream side from the downstream side in the rotation direction (FIG. 3A).

  When the metering-side container 13 filled with the heat generating agent 5 exits the supply port 21 to the downstream side, it overflows from the metering-side container 13 by the scraper 26 that is in sliding contact with the outer peripheral surface of the metering drum body 16. The exothermic agent 5 is scraped off from the outer peripheral surface of the measuring drum main body 16 to the downstream side in the rotation direction, and the exothermic agent 5 for just one warmer remains in the measuring-side accommodating portion 13.

  The exothermic agent 5 filled in the measuring-side accommodation unit 13 by the exothermic agent supply means 15 is transferred while being held in the measuring-side accommodation unit 13 by the magnetic force of the exothermic agent holding means 17 arranged in the measuring drum 14. It is conveyed to the position A side. When the transfer position A is reached, the magnetic force of the heat generating agent holding means 17 is cut off by the holding force blocking means 18, and as shown in FIG. The heat generating agent holding means 54 on the 51 side is attracted by the magnetic force and is accommodated in the seal side accommodating portion 55 from the outside of the breathable sheet 7.

  The heat generating agent 5 accommodated in the seal side accommodating portion 55 is conveyed downstream by the rotation of the seal drum 51. Then, at the sealing position B, the non-breathable sheet 8 is overlapped by the heat roll 52 from the outside of the heat generating agent 5, and the breathable sheet 7 and the non-breathable sheet 8 are heat sealed so as to surround the heat generating agent 5. And conveyed downstream.

  When the amount of heat generating agent 5 in the lower reservoir 23b gradually decreases and the stored amount falls below a predetermined amount and the stored amount detecting means 38 is turned off, the stored amount adjusting and feeding means 27 is controlled by the stored amount control means 45. In operation, the feeding drive means 42 is operated until at least the storage amount detection means 38 is turned on (FIG. 3B). As a result, the storage amount of the heat generating agent 5 in the upstream side of the heat generating agent supply means 25, that is, in the lower storage portion 23b is held substantially constant, so that the pressure acting on the supply portion of the heat generating agent supply means 25 becomes substantially constant. The amount of exothermic agent 5 delivered by the exothermic agent delivery means 25, that is, the amount of exothermic agent 5 supplied into the metering side accommodating portion 13 can be kept substantially constant.

  As described above, the exothermic metering device 11 of the present embodiment includes the supply port 21 in which the exothermic agent supplying means 15 is disposed substantially downward on the upper side of the measuring-side storage unit 13 on the measuring drum 14 and the supply. A storage unit 23 disposed above the port 21 and a heat generating agent supply unit that is disposed between the supply port 21 and the storage unit 23 and supplies the heat generating agent 5 on the storage unit 23 side to the supply port 21 side below the storage unit 23. 25, regardless of the amount of the heat generating agent 5 stored in the storage unit 23, the measuring side storage unit 13 can be reliably charged with the heat generating agent 5, while maintaining the accuracy of measurement, The storage amount in the storage part 23 of the exothermic agent 5 which is a measurement target can be reduced. Thereby, when the manufacturing apparatus is stopped for maintenance or the like, the amount of the heat generating agent 5 remaining in the storage unit 23, that is, the amount of the heat generating agent 5 to be discarded can be minimized, which is economical.

  Since the heat generating agent 5 in the upper storage portion 23a located above the upper storage portion 23a is provided with the storage amount adjustment supply means 27 for supplying the heat generation agent 5 to the lower lower storage portion 23b, the heat generation agent supply means 25 It is possible to prevent the storage amount of the upstream heat generating agent 5 from becoming excessive.

  Furthermore, the storage amount detection means 38 for detecting the storage amount of the heat generating agent 5 in the lower storage portion 23b, and the storage amount of the heat generating agent 5 in the lower storage portion 23b based on the detection signal from the storage amount detection means 38. Storage amount control means 45 for controlling the operation of the storage amount adjusting and feeding means 27 so as to keep the temperature substantially constant, so that the storage amount of the heating agent 5 on the upstream side of the heating agent feeding means 25 is kept substantially constant. Can be held. As a result, the pressure acting on the feeding portion of the heating agent feeding means 25 becomes substantially constant, and the feeding amount of the heating agent 5 by the heating agent feeding means 25, that is, the supply amount of the heating agent 5 into the metering side accommodating portion 13 is substantially reduced. There is an advantage that it can be kept constant.

  FIG. 5 illustrates a second embodiment of the present invention. The storage amount adjusting means 27 for supplying the powder material 5 in the upper storage portion 23a to the lower lower storage portion 23b side, the upper storage portion 23a and the lower storage portion 23a. The example comprised by the means to open and close a connection part with the storage part 23b is shown.

  As shown in FIG. 5, the storage amount adjusting means 27 of the present embodiment has an opening / closing member 61 that can be changed between a closed state in which the connecting portion 23c between the upper storage portion 23a and the lower storage portion 23b is closed and an open state in which the connection portion 23c is opened. And an opening / closing drive means 62 composed of an electromagnetic solenoid or the like for driving the opening / closing member 61.

  The connecting portion 23c is provided, for example, on the front wall 28 side, for example, corresponding to the feeding position of the heating agent feeding means 25. Further, on the upper side of the opening / closing member 61, an inclined surface 63 is formed for guiding the heat generating agent 5 on the upper storage portion 23a side to the connecting portion 23c side, that is, the front wall 28 side.

  As described above, the storage amount adjusting means 27 may have any configuration as long as the powder material 5 in the upper storage portion 23a can be supplied to the lower storage portion 23b and the supply amount can be adjusted. .

  As mentioned above, although embodiment of this invention was explained in full detail, this invention is not limited to these each embodiment, A various change is possible in the range which does not deviate from the meaning of this invention. For example, the capacities of the storage part 23, the upper storage part 23a, the lower storage part 23b, etc. are arbitrary, and may be set to an appropriate size according to the delivery amount of the exothermic agent delivery means 25 and the like. Therefore, for example, as shown in FIG. 6, the storage supply case 24 can be formed with a substantially constant cross-sectional area in the vertical direction without providing the widening portion 36 or the like in the lower storage portion 23 b.

  In the embodiment, an example is shown in which the supply port 21 is formed so as to straddle a plurality of (for example, four) all of the measuring-side accommodating portions 13 arranged in the axial direction of the measuring drum 14, but as shown in FIG. 7. In addition, a plurality of supply ports 21 may be provided so as to correspond to the plurality of measuring-side accommodating portions 13 arranged in the axial direction of the measuring drum 14. Further, not only the supply port 21 but also a plurality of the heat generating agent supply means 15 may be provided so as to correspond to the plurality of measurement side accommodating portions 13 arranged in the axial direction of the measurement drum 14.

  The storage amount adjusting unit 27 may be provided outside the exothermic agent supplying unit 15. That is, the supply amount of the heat generating agent 5 into the storage portion 23 may be adjusted by the storage amount adjusting means 27 provided outside the heat generating agent supply means 15.

  In the embodiment, the example in which the permanent magnet is fixedly arranged as the heat generating agent holding means 17 on the measuring drum 14 side with respect to the measuring side accommodating portion 13 is shown, but for example, the heat generating agent holding means 17 may be an electromagnet or the like. Further, the holding force blocking means 18 is configured to block the magnetic force acting on the measuring side housing 13 from the exothermic agent holding means 17. For example, the exothermic agent holding means 17 is movable with respect to the measuring side housing 13. Alternatively, the magnetic force acting on the measuring side housing portion 13 from the exothermic agent holding means 17 may be changed by changing the distance between the exothermic agent holding means 17 and the measuring side housing portion 13. When an electromagnet is used as the heat generating agent holding means 17, it can be dealt with by ON / OFF control of the electromagnet.

  For example, the scraper 26 may be fixed to a part different from the heating agent supply means 15. The material and shape are arbitrary.

  In addition, the powder object to be measured by the powder object measuring device is not limited to the heat-generating agent for disposable warmers, and similarly applies when measuring other kinds of powder objects such as deodorizers. Is possible.

It is a schematic block diagram of the disposable body warmer manufacturing apparatus which shows the 1st Embodiment of this invention. It is a front fragmentary sectional view of the exothermic agent measuring device which shows the 1st Embodiment of this invention. It is operation | movement explanatory drawing of the heat generating agent metering apparatus which shows the 1st Embodiment of this invention. It is a schematic block diagram of the disposable body warmer which shows the 1st Embodiment of this invention. It is a schematic block diagram of the heat generating agent metering apparatus which shows the 2nd Embodiment of this invention. It is a schematic block diagram of the heat generating agent metering apparatus which shows the example of a change of this invention. It is a front fragmentary sectional view of the heat generating agent metering apparatus which shows the example of a change of this invention.

Explanation of symbols

5 Exothermic agent (powder)
13 Weighing side accommodating part (accommodating part)
14 Weighing drum (powder storage means)
15 Heating agent supply means (powder material supply means)
21 Supply Port 23 Reservoir 23a Upper Reservoir 23b Lower Reservoir 25 Heating Agent Feeding Unit (Powder Material Feeding Unit)
27 Storage amount adjustment feeding means (Storage amount adjusting means)
45 Storage amount control means

Claims (4)

  The powder material storage means (14) having a storage portion (13) capable of storing a predetermined amount of the powder material (5), and the storage portion (13) of the powder material storage means (14) In the powder material metering device comprising a powder material supply means (15) for supplying a fixed amount of powder material (5), the powder material supply means (15) is the powder material storage means (14). The storage part (23) which can be arrange | positioned above and can store the said powdery material (5), and the supply port arrange | positioned downward toward the said accommodating part (13) below this storage part (23) (21), the powder which is arrange | positioned between the said storage part (23) and the said supply port (21), and delivers the powder substance (5) by the side of the said storage part (23) to the said supply port (21) side A powder measuring device comprising a body feeding means (25).   Storage amount adjusting means (27) for supplying the powder (5) in the upper storage part (23a) above the storage part (23) to the lower storage part (23b) on the lower side. The powder substance measuring device according to claim 1, comprising:   Based on a storage amount detection means (38) for detecting the storage amount of the powder material (5) in the lower storage portion (23b), and a detection signal from the storage amount detection means (38), the lower storage portion (23b) comprising a storage amount control means (45) for controlling the operation of the storage amount adjusting means (27) so as to keep the storage amount of the powder (5) in (23b) substantially constant. The powder substance measuring device according to claim 2. The powder material measuring device according to any one of claims 1 to 3, wherein the powder material is a heating agent for disposable body warmers.

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