JP2005029292A - Transfer device for magnetic substance powder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a transfer device capable of surely transferring magnetic substance powder between two conveyance means always at a regular position. <P>SOLUTION: This device is a transfer device transferring the magnetic substance powder from a first conveyance means to a second conveyance means and is provided with the first conveyance means having a magnet holding the magnetic substance powder on a conveyance surface, a secondary conveyance means having a magnet holding the magnetic substance powder transferred from the first conveyance means on a conveyance surface, and a magnetic force insulating means insulating magnetic force of the magnet of the first conveyance means in a region where the first conveyance means and the second conveyance means overlap. A support means providing support in a direction resisting attraction force of the magnet is provided at an arbitrary position between both ends of an insulation plate. The support means is composed of a cam attached to the insulation plate side and a roller supporting slide of the cam. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a transfer device for magnetic powder. More specifically, the present invention relates to a transfer device used when a magnetic powder such as a raw material of a disposable body warmer is transferred by two or more transfer means.
[0002]
[Prior art]
As an example of a magnetic powder transfer device, there is one incorporated in a disposable body warmer (Patent Document 1).
This disposable body warmer manufacturing machine of Patent Document 1 is configured by using four drums: a measuring drum, a shift drum, a transport drum, and a seal drum. And each drum can share and perform each operation | movement of measurement of the raw material for every single warmer, transfer, the packing film, and a seal | sticker, and can manufacture a disposable warmer efficiently. It is like that.
The transfer device is provided between the measuring drum and the shift drum, and the configuration thereof is as follows.
The measuring drum includes a magnet that attracts and holds the magnetic powder on the drum surface, and the shift drum also includes a magnet that attracts and holds the magnetic powder on the drum surface. The measuring drum and the shift drum are arranged in a state where the drum surfaces are substantially in contact with each other. At the substantially contacting position, the measuring drum is fixedly provided with a blocking plate for blocking the lines of magnetic force. For this reason, the magnetic powder on the drum surface is carried by the magnet without being dropped with the rotation of the measuring drum, but the magnetic force on the measuring drum side is lost when it comes to the position where the shielding plate is arranged. The magnetic powder is attracted by the magnet on the side, and the magnetic powder is transferred to the dislocation drum side. The dislocation drum continues to rotate and conveys the transferred magnetic powder.
As described above, blocking the primary magnetic force by the blocking plate is essential for transferring the magnetic powder to the secondary side.
By the way, if it is going to convey magnetic substance powder as much as possible, what is necessary is just to convey in a multi-row state. However, in this case, the number of magnets increases in accordance with the number of rows, and the attractive force also increases, so the middle of the blocking plate may be attracted by the magnetic force and bent. If the blocking plate bends, it may interfere with the primary conveying means such as a measuring drum and be moved. In this case, the magnetic force blocking position cannot be fixed, and it becomes difficult to transfer the magnetic powder at a fixed position.
[0003]
[Patent Document 1]
Japanese Examined Patent Publication No. 7-108687 [0004]
[Problems to be solved by the invention]
The present invention provides a transfer device that can reliably transfer a magnetic powder between two transfer means at a constant position.
[0005]
[Means for Solving the Problems]
The transfer device for magnetic powder according to claim 1 is a transfer device for transferring the magnetic powder from the first transfer means to the second transfer means, and includes a first transfer having a magnet for holding the magnetic powder on the transfer surface. Means, a second transport unit having a magnet for holding the magnetic powder transferred from the first transport unit on a transport surface, and a region where the first transport unit and the second transport unit overlap. Magnetic force blocking means for blocking the magnetic force of the magnet of the first transport means.
According to a second aspect of the present invention, there is provided the magnetic powder transfer device according to the first aspect, wherein the magnetic force blocking means blocks a magnetic force disposed between the transfer surface and the magnet in the first transfer means. It is characterized by comprising.
According to a third aspect of the present invention, there is provided the magnetic powder transfer device according to the first aspect, wherein support means for supporting the magnet in a direction against the attractive force of the magnet is provided at an arbitrary position between both ends of the shielding plate. It is characterized by that.
According to a fourth aspect of the present invention, there is provided the magnetic powder transfer device according to the third aspect, wherein the support means includes a cam attached to the blocking plate side and a roller for supporting the sliding of the cam. .
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of the present invention will be described with reference to the drawings. This embodiment is a transfer device incorporated in a disposable body warmer packaging machine that continuously wraps raw materials of a disposable body warmer. The raw material of the disposable body warmer is a kind of magnetic powder.
[0007]
FIG. 4 shows the disposable warmer packaging machine A described above. The main components of the disposable warmer packaging machine A are a measuring drum 1, a sealing drum 4, and a sealing device 5.
The measuring drum 1 corresponds to the first conveying means in the claims, and the seal drum 4 corresponds to the second conveying means.
[0008]
A hopper 8 is attached to the measuring drum 1 as the first conveying means. The hopper 8 is provided for storing the raw material m of the disposable body warmer and supplying it to the measuring drum 1. This raw material m is made of iron powder, water, vermiculite, activated carbon, salts, etc., and is a magnetic powder.
The measuring drum 1 is for measuring a certain amount of the warmer raw material m and transporting it to the seal drum 4. The measuring drum 1 is provided with a raw material measuring means and a magnet as a basic constituent member.
[0009]
The details of the measuring drum 1 are as follows. As shown in FIGS. 1 and 2, reference numeral 10 denotes a rotating shaft that is rotated by a driving source such as a motor. A fixed cylinder 11 that is externally fixed to the rotary shaft 10 is provided, and a cylindrical drum body 13 and an inner drum 15 having a smaller diameter are fixed to the fixed cylinder 11.
On the outer peripheral surface of the drum body 13, a plurality of recesses 14 for accommodating the raw material m are formed. Although the number of the concave portions 14 can be set freely, the concave portions 14 are formed in four rows and many rows from the viewpoint of productivity of the disposable body warmer.
The raw material measuring means measures the warmer raw material m into raw materials for each disposable warmer, and is composed of a measuring doctor 19 that is in contact with the surface of the drum 1 and arranged in parallel in the axial direction of the drum 1.
[0010]
The magnets 16 hold the raw material m in the recesses 14, and are composed of a plurality of magnets 16 that are respectively disposed below the recesses 14 and fixed to the inner drum 15. That is, the magnet 16 is constituted by a set of three magnets 16 a, 16 b, and 16 c, and each magnet 16 is arranged so as to be along the rotation direction of the drum 1 and the magnetic pole is located below each recess 14. Has been. In this embodiment, the three magnets 16a, 16b, and 16c are installed as a set at the lower portion of one recess 14, but one permanent magnet can be used. Moreover, you may comprise the magnet 16 with an electromagnet instead of comprising with a permanent magnet.
The raw material m placed on the concave portion 14 is attracted to the bottom surface of the concave portion 14 by the magnetic force by the concave portion 14 and the magnet 16, and thus is transferred without falling while the measuring drum 1 rotates.
[0011]
Next, the seal drum 4 as the second conveying means will be described with reference to FIG.
The seal drum 4 is a member for holding the warmer raw material m supplied from the measuring drum 1 and sandwiching it between the first raw film p and the second raw film q and sealing with a sealing device 5 to be described later. It is rotated by a drive source such as a motor. The configuration is such that a cylindrical drum body 43 is fixed to a rotating shaft.
A plurality of recesses 44 for accommodating the raw material m are formed on the outer peripheral surface of the drum body 43. The size, shape, arrangement, etc. of the recesses 44 are substantially the same as those of the recesses 14 of the measuring drum 1.
[0012]
A magnet 46 is disposed below the recess 44. The magnet 46 holds the raw material m on the surface of the seal drum 4, and is fixed to the inner peripheral surface of the seal drum 4. In the present embodiment, a permanent magnet is used as a magnet, but an electromagnet can also be used.
[0013]
Since the first raw film p is supplied to the seal drum 4 from a raw drum (not shown), the raw material m transferred from the measuring drum 1 is held in the recess 44 via the first raw film p. The Rukoto. Therefore, the raw material m held on the concave portion 44 via the first raw film p does not fall even when the sealing drum 4 rotates, and the position where the raw material m meets the sealing device 5 as the sealing drum 4 rotates. Carried to.
[0014]
The sealing drum 4 has a thermal drum structure because it performs a film sealing operation together with a sealing device 5 described later. That is, a heat source such as an electric heater is incorporated in the rotating shaft, and the drum body 43 is filled with a heat medium such as oil. Since the heat generated by the heat source is transmitted to the drum body 43 through the oil, the outer surface of the drum body 43 can be maintained at a temperature sufficient for heat sealing.
[0015]
The sealing device 5 heat-seals and wraps the raw material m, and is disposed so as to contact the outer peripheral position of the sealing drum 4 as shown in FIG.
The sealing device 5 supports a seal roll 51 with a rotating shaft. On the outer surface of the seal roll 51, five vertical seal surfaces and a plurality of horizontal seal surfaces are formed, and a cartridge heater (not shown) is incorporated inside.
The vertical sealing surface and the horizontal sealing surface are provided in a positional relationship surrounding the periphery of the raw material m sandwiched between the two films p and q in four rows.
Then, as shown in FIG. 4, the second raw film q is supplied from a raw drum (not shown) to the seal roll 51 of the sealing device 5, and is supplied onto the seal drum 4 after being wound around the seal roll 51 by a half circumference. Has been.
[0016]
Based on the above configuration, the sealing device 5 presses the first and second raw film p, q with the raw material m sandwiched between the vertical and horizontal sealing surfaces on the surface of the sealing drum 4 every time the sealing roll 51 rotates once. Therefore, at that time, the two films p and q can be heat-sealed by the heat of the vertical and horizontal sealing surfaces.
The sealing device 5 and the sealing drum 4 can easily synchronize their rotational phases with gears, timing belts, etc., so that timing deviation and film deviation are unlikely to occur, and sealing can be performed with high positional accuracy. .
[0017]
Next, details of the magnetic force blocking means will be described.
As shown in FIG. 4, the upper side of the measuring drum 1 as the first transport unit and the lower side of the seal drum 4 as the second transport unit are superposed. In this superposed region, a blocking plate 18 is disposed inside the measuring drum 1. That is, the magnetic substance powder m is provided at a place where it is necessary to transfer the magnetic powder m from the measuring drum 1 to the seal drum 4.
[0018]
As shown in FIGS. 1 to 3, the magnetic force blocking means includes a blocking plate 18 disposed between the inner peripheral surface of the drum body 13 and the magnet 16. The blocking plate 18 is a plate material composed of a curved surface portion 18 a bent with a slightly smaller radius of curvature than the inner peripheral surface of the drum body 13 and attachment portions 18 b at both ends, and the length of the curved surface portion 18 a is the width of the drum body 13. It is slightly smaller and the width is formed to be about one or two magnets 16, and the mounting portion 18 b is rotatably supported with respect to the rotating shaft 10. Therefore, the blocking plate 18 does not rotate with the measuring drum 1 but is fixed. However, the arrangement position of the blocking plate 18 in the measuring drum 1 can be arbitrarily set. In addition, as long as the interruption | blocking board 18 can interrupt | block the magnetic flux of the magnet 16, the member of what kind of material can be used without a restriction | limiting, However, Since interruption | blocking force is good in this embodiment, it uses an iron plate. Yes.
In the present embodiment, as shown in FIG. 4, the blocking plate 18 is disposed at a position where the magnetic force of the magnet 16 on the weighing drum 1 side can be blocked at the contact point between the weighing drum 1 and the seal drum 4. By doing so, the warming raw material m on the concave portion 14 of the measuring drum 1 on the contact is interrupted by the magnetic force on the magnet 16 side, while being attracted by the magnetic force of the magnet 46 on the sealing drum 4 side. It will be transferred to the recess 44.
[0019]
Next, support means for the blocking plate 18 will be described. As shown in FIGS. 1 and 3, a cam 61 is fixed to an intermediate portion in the length direction of the blocking plate 18. The side surface of the cam 61 is curved in an arc shape as shown in FIG. 3, and both end portions are inclined obliquely.
A roller 62 is disposed at a position for supporting the cam 61 from below. A large number of rollers 62 are circumferentially arranged, and are rotatably supported by the inner drum 15 in the measuring drum 1.
As described above, since the roller 62 is disposed around the entire circumference of the measuring drum 1, the roller 62 and the cam 61 support the shield plate 18 regardless of the position on the circumference of the shield plate 18. can do.
For this reason, even if the number of magnets 16 increases and a strong attractive force acts on the shielding plate 18, it is possible to prevent the bending of the central portion of the shielding plate 18 being lowered. As a result, the shielding plate 18 and the magnet 16 do not interfere with each other, and the arrangement position of the shielding plate 18 does not go wrong.
[0020]
Below, the effect of the transfer apparatus in the disposable body packaging machine of this embodiment is demonstrated.
I: The raw material m in the hopper 8 is attracted by the magnet 16 into the concave portion 14 of the measuring drum 1, and the raw material m piled up is held in the concave portion 14 by the magnet 16, and is sealed with the rotation of the measuring drum 1. It starts to be transferred in 4 directions. At this time, the surplus portion other than the portion packed in the recess 14 is cut by the measuring member 19 and only the raw material m held in the recess 14 is transferred in the direction of the seal drum 4.
II: When the raw material m packed in the recess 14 is transferred onto the contact point between the measuring drum 1 and the seal drum 4, the magnetic lines of force of the magnet 16 are blocked by the blocking plate 18 of the measuring drum 1. Therefore, the raw material m is separated from the inside of the recess 14 and is attracted by the magnet 46 on the seal drum 4 side. And since the 1st original film p is supplied to the seal drum 4, the raw material m is hold | maintained in the recessed part 44 via the 1st original film p. At this time, the raw material m can be transferred from the measuring drum 1 to the seal drum 4 only when the blocking plate 18 is reliably positioned at a fixed position. As described above, even if the length of the blocking plate 18 is long, as long as the blocking plate 18 is supported by the cam 61 and the roller 62, the blocking plate 18 can exhibit its function without being bent.
III: Thereafter, with the rotation of the sealing drum 4, the raw material m held in the recess 44 is sent toward the sealing device 5, and the second raw film is interposed between the sealing device 5 and the sealing drum 4. Since q is supplied, the raw material m is sandwiched between the first raw film p and the second raw film q between the sealing device 5 and the sealing drum 4. And the sealing apparatus 5 presses the 1st and 2nd original fabric films p and q against the surface of the sealing drum 4, and performs heat sealing. When the sealing is finished, the raw material m is sent out in a state of being continuously packaged with the first and second raw film p, q, and sent to the next process.
[0021]
Next, another embodiment of the present invention will be described.
In the above-described embodiment, the center of the shielding plate 18 is supported by the cam 61 and the roller 62 in a state where the magnets 16 are arranged in four rows. However, even when the magnet 16 has five rows or more, the vicinity of the center of the shielding plate 18 is supported. Such a configuration is also included in the present invention.
[0022]
Further, the support means is not limited to the cam 61 and the roller 62, and the shield plate 18 and the magnet 16 can be relatively moved. If the shield plate 18 can be prevented from being bent, a means other than the cam and the roller is used. Also good.
For example, a rib-shaped member may be used instead of the cam, and the inner surface of the blocking plate 18 may be directly supported by a roller without providing a cam. Further, a bush may be used in place of the roller, and it is possible to support with a member having good slipperiness.
[0023]
The transfer device of the present invention is not limited to the drum type conveying means, but can be applied to other various types of conveying means. Therefore, for example, the present invention can be applied to a conveyor type as shown in FIG. In the example of FIG. 5, the first transport unit 1 </ b> A and the second transport unit 4 </ b> A are arranged in parallel, and the recesses 14 and 44 that hold the raw material m are opposed to each other. Magnets 16 and 46 are arranged corresponding to the recesses 14 and 44, respectively.
In the region where the first conveying means 1A and the second conveying means 4A are overlapped, the blocking plate 18A is disposed between the recess 14 and the magnet 16 of the first conveying means 1A.
Also in this example, the raw material m can be transferred from the concave portion 14 of the first conveying means 1A to the concave portion 44 of the second conveying means 4A at the portion where the blocking plate 18A is disposed.
[0024]
The raw material of the disposable body warmer is an example of the magnetic powder referred to in the present invention. Therefore, the magnetic powder for uses other than disposable warmers is also an object of application of the present invention, and the transfer device of the present invention can be used in any industrial field as long as the magnetic powder is transferred. .
[0025]
【The invention's effect】
According to the first aspect of the present invention, in the region where the first conveying means overlaps with the second conveying means, the magnetic force on the first conveying means side is interrupted by the magnetic force interrupting means, so the magnetic powder is transferred to the first conveying means side. To the second transport means side.
According to invention of Claim 2, since it can comprise thinly with a shielding board, since a 1st conveyance means can be made compact and also the part which has not arrange | positioned the shielding board can closely arrange a conveyance surface and a magnet, it is conveying Can be held with a strong magnetic force.
According to the invention of claim 3, since the middle of the shielding plate can be supported by the supporting means, the shielding plate can be prevented from being bent even if the attraction force by the magnet is increased, and the function of the shielding plate can be performed reliably.
According to the invention of claim 4, since the roller on the first conveying means side and the cam of the shielding plate can reduce sliding resistance, the arrangement position of the shielding plate can be displaced even if the first conveying means is moved. Can be fixed without any problems. For this reason, it is possible to always transfer the magnetic powder from the first conveying means to the second conveying means at an accurate position.
[Brief description of the drawings]
FIG. 1 is a front sectional view of an essential part of a transfer device according to an embodiment of the present invention.
FIG. 2 is a side cross-sectional view of the transfer device of FIG.
FIG. 3 is a side view showing a blocking plate in the transfer device of FIG. 1;
FIG. 4 is a schematic view of a disposable body packaging machine to which the transfer device of FIG. 1 is applied.
FIG. 5 is a side view of a transfer device according to another embodiment of the present invention.
[Explanation of symbols]
m Raw material of disposable body warmer p First raw film q Second raw film 1 Weighing drum 4 Seal drum 13 Drum body 14 Recess 16 Magnet 18 Blocking plate 43 Drum body 44 Recess 46 Magnet 61 Cam 62 Roller

Claims (4)

A transfer device for transferring magnetic powder from the first transfer means to the second transfer means,
First conveying means having a magnet for holding the magnetic powder on the conveying surface;
A second conveying means having a magnet for holding the magnetic powder transferred from the first conveying means on the conveying surface;
A magnetic powder transfer device comprising magnetic force blocking means for blocking the magnetic force of the magnet of the first transfer means in a region where the first transfer means and the second transfer means overlap. 2. The transfer of magnetic powder according to claim 1, wherein the magnetic force blocking means comprises a blocking plate that blocks magnetic force disposed between the transfer surface and the magnet in the first transfer means. apparatus. 2. The apparatus for transferring magnetic substance powder according to claim 1, wherein support means for supporting the magnet in a direction against the attractive force of the magnet is provided at an arbitrary position between both ends of the blocking plate. 4. The apparatus for transferring magnetic powder according to claim 3, wherein the support means comprises a cam attached to the side of the blocking plate and a roller for supporting sliding of the cam.