JP2007326668A - Vibratory feeder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact vibratory feeder capable of efficiently converting supplied power into a vibration force. <P>SOLUTION: This vibratory feeder is provided with a conveyance trough 5 for conveying powder and granular material by vibration and an electromagnet 6 which has a coil 61 and whose one end becomes the upstream side in the direction of conveyance and whose other end becomes the downstream side in the direction of conveyance. A permanent magnet 7 is arranged to face one end or the other end of the electromagnet 6, and either of the electromagnet 6 and the permanent magnet 7 is fixed to the conveyance trough 5. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vibration feeder that conveys a granular material by vibration, and more particularly to a vibration feeder such as a packaging machine that divides and packs a medicine such as a powder by a required amount.

  Conventionally, for example, as a vibratory feeder such as a packaging machine that divides and wraps powder particles such as drugs (particularly powdered medicine) by required amount, vibration is applied to the conveyance trough and conveyance trough that convey the particles by vibration. The thing provided with the piezoelectric element which performs is known. In this method, a conveying trough is vibrated by applying a voltage to a piezoelectric element (piezo element), and powder particles on the conveying trough are conveyed from the upstream side to the downstream side (see Patent Document 1 below).

  A piezoelectric element used in such a vibration feeder is damaged immediately when a force such as tension, shearing force, or biased force is applied, and thus handling thereof must be handled with care.

Thus, as such a vibration feeder, an electromagnet and an iron plate that are easy to handle can be considered. Specifically, a spring member such as a leaf spring is attached to the transport trough, either an electromagnet or an iron plate is fixed to the transport trough, and a current is passed through the electromagnet to generate a magnetic force. Then, the electromagnet and the iron plate are attracted by the magnetic force, the magnetic force is released, and the original state (the state before the electromagnet and the iron plate are attracted) is restored by the biasing of the spring member. Thus, the vibration feeder using the electromagnet and the iron plate periodically and alternately repeats the generation and attraction of the magnetic force and the release of the magnetic force and the return to the original state. It vibrates and conveys the granular material.
Japanese Patent Laid-Open No. 9-40612

  However, in the vibration feeder using the above-described electromagnet and iron plate, the electromagnet must be made large in order to obtain sufficient vibration for conveying the granular material, so that power consumption increases. In addition to this, there is a problem that the vibration feeder itself becomes large.

  Therefore, the present invention has been made in view of the above-described conventional problems, and an object of the present invention is to provide a vibration feeder that can reduce the size of the vibration feeder while efficiently converting supplied power into a vibration force.

  The present invention has been made to solve the above-described problems, and a vibration feeder according to the present invention has a conveyance trough for conveying powder particles by vibration, a coil, and one end on the upstream side in the conveyance direction. A permanent magnet is disposed so as to face one end or the other end of the electromagnet, and either the electromagnet or the permanent magnet is fixed to the transport trough. Features.

  In the vibration feeder having such a configuration, the electromagnet is arranged so that one end is on the upstream side in the transport direction and the other end is on the downstream side in the transport direction. A corresponding magnetic field is generated, and AC magnetic poles appear at both ends of the electromagnet, that is, upstream in the transport direction and downstream in the transport direction. That is, when an alternating current flows through the coil, the electromagnet has one end on the upstream side in the transport direction as the N pole and the other end on the downstream side in the transport direction as the S pole, and one end at the S pole and the other at the N pole. And appear alternately and periodically.

  Then, since the permanent magnet is arranged so as to face one end or the other end of the electromagnet, the permanent magnet periodically and alternately attracts and repels the electromagnet. The conveyance trough to which either the electromagnet or the permanent magnet is fixed vibrates due to the magnetic force generated in, and the granular material can be conveyed from the upstream side to the downstream side in the conveyance direction.

  Here, since the permanent magnet originally has magnetism, not only the force when attracting or repelling the electromagnet increases, but also the vibration of the electromagnet or permanent magnet fixed to the transport trough by the amount of repulsion. Amplitude increases. Therefore, since the vibration force of the transport trough is increased and the amplitude of the vibration is increased, sufficient vibration of the transport trough can be obtained even if the coil is downsized.

  Further, the vibration feeder according to the present invention includes a conveyance trough that conveys powder particles by vibration, an electromagnet that has a coil and is arranged so that one end is upstream in the conveyance direction and the other end is downstream in the conveyance direction. The first permanent magnet is disposed so that one of the magnetic poles faces one end of the electromagnet, and the second permanent magnet is arranged so that the same magnetic pole as the one magnetic pole of the first permanent magnet faces the other end of the electromagnet It is arranged and either an electromagnet or both permanent magnets are being fixed to the conveyance trough.

  In the vibration feeder having such a configuration, the electromagnet is arranged so that one end is on the upstream side in the transport direction and the other end is on the downstream side in the transport direction. A corresponding magnetic field is generated, and AC magnetic poles appear at both ends of the electromagnet, that is, upstream in the transport direction and downstream in the transport direction. That is, when an alternating current flows through the coil, the electromagnet has one end on the upstream side in the transport direction as the N pole and the other end on the downstream side in the transport direction as the S pole, and one end at the S pole and the other at the N pole. And appear alternately and periodically.

  Then, the first permanent magnet is arranged so that one magnetic pole thereof faces one end of the electromagnet, and the second permanent magnet is arranged so that the same magnetic pole as one magnetic pole of the first permanent magnet faces the other end of the electromagnet. Therefore, when the first permanent magnet on the upstream side in the transport direction attracts the electromagnet, the second permanent magnet on the downstream side in the transport direction repels the electromagnet, and conversely, the first permanent magnet on the upstream side in the transport direction. When the permanent magnet repels the electromagnet, the second permanent magnet on the downstream side in the transport direction attracts the electromagnet, and this is repeated alternately and periodically.

  Thus, the conveying trough in which the electromagnet is fixed or the first permanent magnet and the second permanent magnet are fixed is vibrated by the magnetic force periodically and alternately generated from the electromagnet by the alternating current, and the granular material Can be transported from the upstream side in the transport direction to the downstream side.

  Here, since the first permanent magnet and the second permanent magnet originally have magnetism, not only the force when attracting or repelling the electromagnet is increased, but the repulsion is fixed to the transport trough. The vibration amplitude of the electromagnet or the permanent magnet is increased, and the attracting force (repulsive force) on one end side of the electromagnet and the repulsive force (attracting force) on the other end side act simultaneously. Therefore, since the vibration force of the transport trough is further increased and the amplitude of the vibration is increased, sufficient vibration of the transport trough can be obtained even if the coil is downsized.

  Further, the vibration feeder according to the present invention includes a transport trough that transports powder particles by vibration, and an electromagnet that has a coil and both ends are either upstream in the transport direction or downstream in the transport direction. The permanent magnet is arranged so that one magnetic pole faces one end of the electromagnet and the other magnetic pole faces the other end of the electromagnet, and either the electromagnet or the permanent magnet is fixed to the transport trough It is characterized by.

  In the vibration feeder having such a configuration, since the electromagnet is arranged so that both ends thereof are either upstream in the transport direction or downstream in the transport direction, when alternating current is passed through the coil, alternating current is generated around the coil. A corresponding magnetic field is generated, and correspondingly, an alternating magnetic pole appears at both ends of the electromagnet, that is, either upstream in the transport direction or downstream in the transport direction. That is, when an alternating current flows through the coil, the electromagnet has one end on the upstream side in the transport direction (downstream side in the transport direction) as the N pole and the other end on the same transport direction upstream side (downstream in the transport direction) as the S pole. The case and the case where one end becomes the S pole and the other end becomes the N pole appear alternately alternately.

  Then, since the permanent magnet is arranged so that one magnetic pole thereof faces one end of the electromagnet and the other magnetic pole faces the other end of the electromagnet, one end of the permanent magnet and one magnetic pole of the permanent magnet are arranged. Are attracted to the other end on the upstream side in the transport direction and the other magnetic pole of the permanent magnet, and conversely, one end of the electromagnet and one magnetic pole of the permanent magnet repel each other. Similarly, the other end of the electromagnet and the other magnetic pole of the permanent magnet repel each other, and this is repeated alternately and periodically.

  In this way, the conveying trough to which either the electromagnet or the permanent magnet is fixed vibrates by the magnetic force periodically and alternately generated from the electromagnet by the alternating current, and conveys the granular material from the upstream side to the downstream side in the conveying direction. can do.

  Here, since the permanent magnet originally has magnetism, not only the force when attracting or repelling the electromagnet is strong, but also the amplitude of vibration of the electromagnet or permanent magnet fixed to the transport trough by the amount of repulsion. In addition, the attracting force (repulsive force) acting at one end of the electromagnet upstream in the transport direction and the attracting force (repulsive force) acting at the other upstream end in the same transport direction as the one end Force) simultaneously. Therefore, since the vibration force of the transport trough is further increased and the amplitude of the vibration is increased, sufficient vibration of the transport trough can be obtained even if the coil is downsized.

  Further, the vibration feeder according to the present invention includes a transport trough that transports powder particles by vibration, and an electromagnet that has a coil and both ends are either upstream in the transport direction or downstream in the transport direction. The first permanent magnet is disposed such that one magnetic pole thereof faces one end of the electromagnet, and the second permanent magnet faces the other magnetic pole opposite to the one magnetic pole of the first permanent magnet. The electromagnet or both permanent magnets are fixed to the transport trough.

  In the vibration feeder having such a configuration, since the electromagnet is arranged so that both ends thereof are either upstream in the transport direction or downstream in the transport direction, when alternating current is passed through the coil, alternating current is generated around the coil. A corresponding magnetic field is generated, and correspondingly, an alternating magnetic pole appears at both ends of the electromagnet, that is, either upstream in the transport direction or downstream in the transport direction. That is, when an alternating current flows through the coil, the electromagnet has one end on the upstream side in the transport direction (downstream side in the transport direction) as the N pole and the other end on the same transport direction upstream side (downstream in the transport direction) as the S pole. The case and the case where one end becomes the S pole and the other end becomes the N pole appear alternately alternately.

  Then, the first permanent magnet is arranged such that one magnetic pole thereof faces one end of the electromagnet, and the second permanent magnet is arranged such that the magnetic pole opposite to the one magnetic pole of the first permanent magnet faces the other end of the electromagnet. Therefore, when the one end on the upstream side in the transport direction attracts the first permanent magnet, the other end on the upstream side in the transport direction attracts the second permanent magnet. When one end of the magnet and the first permanent magnet are repelling each other, the other end of the electromagnet and the second permanent magnet are also repelling each other, and this is repeated alternately and periodically.

  Thus, the conveying trough in which the electromagnet is fixed or the first permanent magnet and the second permanent magnet are fixed is vibrated by the magnetic force periodically and alternately generated from the electromagnet by the alternating current, and the granular material Can be transported from the upstream side in the transport direction to the downstream side.

  Here, since the first permanent magnet and the second permanent magnet originally have magnetism, the force when attracting or repelling the electromagnet is not only strong, but is also fixed to the transport trough for repulsion. The amplitude of the vibration of the electromagnet or both permanent magnets is increased, and the attracting force (repulsive force) acting at one end of the electromagnet on the upstream side in the transport direction and the other end on the upstream side in the transport direction same as the one end The acting attractive force (repulsive force) acts simultaneously. Therefore, since the vibration force of the transport trough is further increased and the amplitude of the vibration is increased, sufficient vibration of the transport trough can be obtained even if the coil is downsized.

  In particular, the electromagnet includes a coil and a core inserted into the coil, and the core includes a pair of linear portions and a base portion of the linear portions, and a connecting portion whose axis is linear or curved. Preferably, the coil is formed in a substantially cylindrical shape whose axis is linear, and is provided in a straight portion of the core body, and the axis of the coil is curved. Since the electromagnet can be formed compactly without being bulky as compared with the case where it is bent so as to have a shape, the vibration feeder can be reduced in size. The substantially cylindrical shape includes a cylindrical shape, a square cylindrical shape such as a triangle or a quadrangle, and the like. The straight line portion includes not only a straight line portion but also a straight line portion of the connecting portion.

  Furthermore, the electromagnet is configured such that only one linear portion of the core body is inserted into the inside of the coil, and it is preferable that both ends of the core body are arranged in the vertical direction. It can be removed and stable conveyance can be performed.

  Furthermore, it is preferable that only the lower linear portion of the core is inserted into the coil, and stable vibration can be obtained.

  In addition, one linear portion of the core body is inserted into the first coil, and the other linear portion of the core body is inserted into the second coil connected in series or in parallel to the first coil. Preferably, the length in the axial direction of each of the first coil and the second coil can be reduced, and the outer diameter thereof can also be reduced, so that the vibration feeder can be further reduced in size.

  Thus, in the vibration feeder according to the present invention, the permanent magnet is arranged so as to face one end or the other end of the electromagnet, and either the electromagnet or the permanent magnet is fixed to the transport trough. As a result, it is possible to increase the vibration force and increase the vibration amplitude, and to obtain sufficient vibration of the transport trough. As a result, the vibration feeder can be reduced in size while efficiently converting the power to be supplied into the vibration force. There is an effect that can be.

  The first permanent magnet is arranged so that one magnetic pole thereof faces one end of the electromagnet, and the second permanent magnet is arranged so that the same magnetic pole as one magnetic pole of the first permanent magnet faces the other end of the electromagnet. Since either the electromagnet or both permanent magnets are fixed to the transport trough, the vibration force of the transport trough can be further increased and the vibration amplitude can be increased, thereby obtaining sufficient vibration of the transport trough. As a result, it is possible to reduce the size of the vibration feeder while converting the supplied power into vibration force more efficiently.

  Further, the electromagnet is arranged so that both ends thereof are either upstream in the transport direction or downstream in the transport direction, the permanent magnet has one magnetic pole facing one end of the electromagnet, and the other magnetic pole is the other end of the electromagnet. Since either the electromagnet or the permanent magnet is fixed to the transport trough, the vibration force of the transport trough can be further increased and the vibration amplitude can be increased. As a result of obtaining sufficient vibration, there is an effect that the vibration feeder can be reduced in size while converting supplied electric power into vibration force more efficiently.

  Furthermore, the electromagnet is disposed so that both ends thereof are either upstream in the transport direction or downstream in the transport direction, and the first permanent magnet is disposed so that one of the magnetic poles faces one end of the electromagnet, Since the second permanent magnet is disposed so that the magnetic pole opposite to the one magnetic pole of the first permanent magnet faces the other end of the electromagnet, either the electromagnet or both permanent magnets are fixed to the transport trough. As a result, it is possible to further increase the vibration force and increase the vibration amplitude, and to obtain sufficient vibration of the transport trough. As a result, the vibration feeder is converted into the vibration force more efficiently. There is an effect that can be reduced in size.

Hereinafter, an embodiment of a vibration feeder according to the present invention will be described with reference to the drawings.
FIG. 1 shows a packaging machine 1 including a vibration feeder 2 according to this embodiment. The packaging machine 1 includes a hopper 3 that is open in both the upper and lower directions, a vibration feeder 2 that is arranged so that an upstream end is located in the lower opening of the hopper 3, and a lower end of the downstream end of the vibration feeder 2. A rotary table 4 arranged so that the outer peripheral edge portion is positioned, a cutting mechanism (not shown) that cuts out powder particles at a predetermined position with respect to the rotary table 4, and a rotary table 4 that is arranged below the rotary table 4. And a packaging mechanism (not shown). In addition, a granular material is especially powders, such as a chemical | medical agent, for example.

  The packaging machine 1 discharges the granular material introduced from the upper opening of the hopper 3 from the lower opening and supplies it to the vibration feeder 2, and the granular material is made uniform on the vibration feeder 2 by the vibration of the vibration feeder 2. It is conveyed from the upstream side to the downstream side while leveling, and the granular material that is made uniform from the downstream end of the vibration feeder 2 is supplied onto the rotary table 4 and a predetermined amount of granular material is cut out by the cutting mechanism. The granular material is divided into small portions, and the granular materials divided into small portions by the packaging mechanism are respectively packaged.

  The hopper 3 is formed in a rectangular funnel shape, and is configured such that powder particles such as powder are input from the upper end opening and discharged from the lower end opening.

  The rotary table 4 is arranged so that the outer peripheral edge portion is positioned below and downstream of the vibration feeder 2. An annular groove 41 is formed in the outer peripheral edge of the rotary table 4, and powder particles are supplied into the annular groove 41 from the vibration feeder 2.

  The cut-out mechanism is arranged at a predetermined position facing the annular groove 41 of the turntable 4 so as to cross the rotation track of the turntable 4.

  As shown in FIG. 2, the vibration feeder 2 includes a conveyance trough 5 that conveys powder particles by vibration, and an electromagnet 6 that has a coil 61 and is arranged so that both ends 6211 and 6211 are both upstream in the conveyance direction. The first permanent magnet 7 arranged so that one magnetic pole faces one end of the electromagnet 6, and the magnetic pole opposite to one magnetic pole of the first permanent magnet 7 is arranged opposite the other end of the electromagnet 6. A first fixing portion 9 for fixing the first permanent magnet 7 and the second permanent magnet 8 to the transport trough 5, and the transport trough through the holding member 11 for fixing the electromagnet 6. And a second fixing part 10 that holds the vibrator 5 so as to vibrate.

  The conveyance trough 5 has a long groove shape extending in the conveyance direction, conveys the upstream granular material to the downstream side by vibration, and supplies it to the rotary table 4. Specifically, the transport trough 5 has an opening at the downstream end of the bottom wall 51 of the groove, and the powder supplied to the upper surface of the upstream end of the bottom wall 51 via the hopper 3 in the transport direction. Then, it is conveyed to the downstream side while being evenly distributed, and the granular material is supplied to the lower rotary table 4 from the opening at the downstream end. In this embodiment, the transport trough 5 is arranged so that the upper surface of the bottom wall 51 is substantially horizontal, but the upper surface of the bottom wall 51 is inclined from the upstream side in the transport direction toward the downstream side in the transport direction. May be provided.

  Further, the transport trough 5 includes a groove-like fitting portion 52. Specifically, the fitting portion 52 has a groove shape opened downward, and is provided so as to extend from the upstream side to the upstream end portion of the opening of the bottom wall 51.

  The first fixing portion 9 includes a first plate 91 extending in the transport direction and a first blanket 92 having a substantially L-shaped cross section, and is disposed below the transport trough 5 and fixed to the transport trough 5. Specifically, the first plate 91 has a plate-like shape in which the thickness direction is the vertical direction and extends in the transport direction, and the width (length in the left-right direction) is substantially equal to the groove width of the fitting portion 52. Yes. Further, both end surfaces 911 and 912 in the transport direction of the first plate 91 are substantially parallel with an inclination on the upstream side with respect to the transport direction. That is, both end surfaces 911 and 912 in the transport direction of the first plate 91 are inclined so as to be downstream in the transport direction toward the lower side, and the inclination angles thereof are the end surface 911 on the upstream side in the transport direction and the end surface 912 on the downstream side. Is almost equal.

  The first blanket 92 has a substantially L-shaped cross-sectional shape that extends downstream in the transport direction and extends downward, and has a length that is substantially equal to the width of the first plate 91. In addition, a thin iron plate 93 is attached to the entire surface on the downstream side of the fixed piece 921 extending downward. The first blanket 92 is fixed to the lower surface of the first plate 91 so that the fixing piece 921 protrudes downward.

  Such a first fixing portion 9 is fixed to the transport trough 5 by the first plate 91 being fitted in the groove of the fitting portion 52 and being fixed to the transport trough 5. A gap is formed between the first plate 91 and the bottom surface (upper surface) of the groove of the fitting portion 52.

  The first permanent magnet 7 and the second permanent magnet 8 are fixed to the transport trough 5 via the first fixing portion 9. Specifically, the first permanent magnet 7 and the second permanent magnet 8 are fixed to the transport trough 5 by being aligned and fixed on the downstream surface of the iron plate 93 in the vertical direction. And the 1st permanent magnet 7 and the 2nd permanent magnet 8 are arrange | positioned so that the magnetic pole which faces each downstream may become a mutually opposite magnetic pole. For example, when the north pole of the first permanent magnet 7 is disposed facing the downstream side, the south pole of the second permanent magnet 8 is disposed facing the downstream side. In addition, although it does not specifically limit as a permanent magnet, The thing with a strong magnetic force is preferable.

  The second fixing unit 10 includes a second plate 101 extending in the transport direction and a second blanket 102 having a substantially L-shaped cross section, and is positioned below the transport trough 5 and holds the transport trough 5 via the holding member 11. It is held so that it can vibrate. Specifically, the second plate 101 has a plate shape extending in the transport direction in the thickness direction. Further, both end surfaces 1011 and 1012 in the transport direction of the second plate 101 are substantially parallel with an inclination on the upstream side with respect to the transport direction. That is, both end surfaces 1011 and 1012 in the transport direction of the second plate 101 are inclined so as to be downstream in the transport direction toward the lower side, and the inclination angles thereof are the end surface 1011 on the upstream side in the transport direction and the end surface 1012 on the downstream side. And are substantially equal to the inclination angles of both end surfaces 911 and 912 in the transport direction of the first plate 91.

  The second blanket 102 has a substantially L-shaped cross-sectional shape that extends to the downstream side in the transport direction and extends upward, and has a length substantially equal to the width of the second plate 101. The second blanket 102 is fixed to the upper surface of the second plate 101 so that the fixed piece 1021 protrudes upward.

  The electromagnet 6 includes a coil 61 and a core body 62 inserted into the coil 61, and both ends 6211 and 6211 thereof are disposed on the upstream side in the transport direction. Specifically, the electromagnet 6 is formed in a substantially U shape in which the core body 62 is formed by a pair of linear portions 621 and a connecting portion 622 in which the base ends of the linear portions 621 are connected and the axis is curved. The coil 61 is formed in a substantially cylindrical shape whose axis is linear. In the electromagnet 6, the coil 61 is provided on the straight portion 621 of the core body 62, the core body 62 has both the straight portions 621 aligned in the vertical direction, and the tips 6211 and 6211 are connected to the connecting portion 622 on the upstream side in the transport direction. Is fixed to the second fixing portion 10 by fixing the tip end portion of the linear portion 621 to the fixing piece 1021 of the second blanket 102 such that the end portion of the linear portion 621 is on the downstream side in the transport direction. Specifically, the electromagnet 6 is configured such that only one linear portion 621 of the core body 62 is inserted into the coil 61, and both ends 6211 and 6211 of the core body 62 are arranged in the vertical direction. ing. In the present embodiment, only the lower linear portion 621 of the core body 62 is inserted into the coil 61. Only the upper straight part 621 may be inserted through the coil 61. Further, iron can be used as the material of the core body 62, but it is preferable to use a material having excellent magnetic permeability such as silicon steel or permalloy.

  The second fixing unit 10 holds the transport trough 5 via the holding member 11. Specifically, in the second fixing portion 10, the second plate 101 is separated below the first plate 91 and becomes parallel along the transport direction, and both end surfaces 1011 and 1012 in the transport direction are the first plate 91. The first plate 91 is disposed so as to be flush with both end surfaces 911 and 912 in the transport direction, the end surface 911 on the upstream side in the transport direction of the first plate 91, the end surface 1011 on the upstream side in the transport direction of the second plate 101, and the first plate 91. By connecting the end surface 912 on the downstream side in the transport direction and the end surface 1012 on the downstream side in the transport direction of the second plate 101 with the holding member 11, the transport trough 5 is held so as to be able to vibrate in the transport direction. The first blanket 92 fixed to the first plate 91 and the second blanket 102 fixed to the second plate 101 are the first blanket 92 on the upstream side of the second blanket 102. The fixed piece 921 and the fixed piece 1021 of the second blanket 102 are arranged to face each other. With this arrangement, the first permanent magnet 7 and the second permanent magnet 8 fixed to the fixed piece 921 of the first blanket 92 are fixed to the fixed piece 1021 of the second blanket 102. It faces the both ends 6211 and 6211 of each. That is, the upper first permanent magnet 7 faces the tip 6211 of the upper straight portion 621 of the core body 62, and the lower second permanent magnet 8 faces the tip 6211 of the lower straight portion 621. .

  The holding member 11 holds the transport trough 5 so that it can vibrate in the transport direction, and is attached to the second fixed portion 10 to hold the transport trough 5. Specifically, the holding member 11 is provided as a pair on the upstream side and the downstream side of the second fixing portion 10 and is, for example, a thin plate spring.

  As shown in FIG. 1, the vibration feeder 2 having such a configuration is supported through a support member 13 so as to vibrate. Specifically, the vibration feeder 2 has a cover member 12 attached to the second fixing portion 10, a support member 13 is attached to the cover member 12, and the support member 13 is fixed to the fixing base 14. 1 is supported so as to vibrate. The support member 13 is, for example, a cylindrical coil 61 spring, and its upper end is fixed to the cover member 12 and the lower end is fixed to the fixed base 14 with the axis line set in the vertical direction. The support member 13 is not limited to the coil 61 spring, and may be a rubber damper such as urethane rubber. Further, the cover member 12 or the second fixing portion 10 may be directly fixed to the fixing base 14 without providing the support member 13. However, it is preferable to provide the support member 13 because the natural frequency as the vibration system of the vibration feeder 2 can be reduced and resonance can be easily caused.

  In the packaging machine 1 including the vibration feeder 2 configured as described above, the electromagnet 6 is arranged so that both ends 6211 and 6211 are upstream in the transport direction. When flowing through the coil 61, an alternating magnetic field is generated around the coil 61, and an alternating magnetic pole appears at both ends 6211 and 6211 of the electromagnet 6, that is, upstream in the transport direction. For example, when an alternating current flows through the coil 61, the electromagnet 6 has a case where the tip 6211 of the upper straight part 621 becomes the N pole and the tip 6211 of the lower straight part 621 becomes the S pole, and the upper straight part The case where the tip 6211 of 621 becomes the S pole and the tip 6211 of the lower linear part 621 becomes the N pole appears alternately and periodically.

  Then, the first permanent magnet 7 is arranged so that one of the magnetic poles faces the tip 6211 of the upper linear portion 621, and the second permanent magnet 8 has the opposite magnetic pole to the one magnetic pole of the first permanent magnet 7. Since the tip 6211 of the upper straight part 621 and the first permanent magnet 7 are attracting each other, the lower straight part is similarly arranged. When the tip 6211 of the 621 and the second permanent magnet 8 attract each other and conversely, the tip 6211 of the upper straight portion 621 and the first permanent magnet 7 repel each other, similarly, the lower straight portion The tip 6211 of the 621 and the second permanent magnet 8 repel each other, and this is repeated alternately and periodically. That is, when the attracting force is applied, the transport trough 5 moves downstream, and when the repulsive force is applied, the transport trough 5 moves upstream, which is a periodicity. The conveying trough 5 vibrates by being alternately repeated.

  Thus, the conveyance trough 5 in which both the first permanent magnet 7 and the second permanent magnet 8 are fixed is vibrated in the conveyance direction by the magnetic force periodically and alternately generated from the electromagnet 6 by the alternating current, and the granular material Can be transported from the upstream side toward the downstream side in the transport direction while being evenly distributed on the transport trough 5.

  Here, since the first permanent magnet 7 and the second permanent magnet 8 originally have magnetism, not only the force at the time of attracting or repelling the electromagnet 6 is strong, but the rebounding force is applied to the transport trough 5. The amplitude of vibration of the fixed permanent magnets 7 and 8 is increased, and furthermore, an attracting force (repulsive force) acting at the tip 6211 of the upper linear portion 621 and the lower linear portion 621. Attracting force (repulsive force) acting at the tip 6211 acts simultaneously. Therefore, since the vibration force of the transport trough 5 is further increased and the amplitude of the vibration is increased, sufficient vibration of the transport trough 5 can be obtained even if the coil 61 is downsized. Therefore, the vibration feeder 2 can be reduced in size while converting the supplied power into vibration force more efficiently.

  The electromagnet 6 includes a coil 61 and a core body 62 inserted into the coil 61. The core body 62 connects a pair of linear portions 621 and the base end portions of the linear portions 621 and has an axial line that is curved. Since the coil 61 is formed in a substantially cylindrical shape having a straight line, the coil 61 is provided on the straight portion 621 of the core body 62. Since the electromagnet 6 can be formed compactly without being bulky as compared with the case where the coil 61 is bent so that the axis thereof is curved, the vibration feeder 2 can be reduced in size.

  Further, the electromagnet 6 is configured such that only the lower linear portion 621 of the core body 62 is inserted into the coil 61, and both ends 6211 and 6211 of the core body 62 are arranged in the vertical direction. As a result, the weight of the vibration feeder 2 can be balanced and stable conveyance can be performed, and stable vibration can be obtained.

  Furthermore, since a leaf spring is used as the holding member 11, for example, the transport trough 5 moves upstream, the distance between the electromagnet 6 and the permanent magnets 7 and 8 increases, and the attractive force decreases. Even if it is a case, the conveyance trough 5 can be easily moved downstream by the urging | biasing to the downstream of a leaf | plate spring.

  In the present embodiment, the electromagnet 6 is a substantially U-shaped core formed by a pair of upper and lower linear portions 621 and a base portion of the linear portions 621 and a connecting portion 622 having a curved axis. 62 and a substantially cylindrical coil 61 whose axis is linear, and only the linear part 621 on the lower side of the core body 62 is inserted into the coil 61, and both ends 6211 of the linear part 621 are configured. 6211 has been described so as to be upstream in the transport direction, but is not limited to this. For example, as shown in FIG. 3A, one end 6211 of the electromagnet 6 is upstream in the transport direction. And the other end 6211 may be arranged on the downstream side in the transport direction. Specifically, the core body 62 may be configured only by the straight portion 621 extending in the transport direction, and a cylindrical coil 61 having a linear axis may be provided there. In this case, it is also possible to arrange the permanent magnet 7 so as to face one end 6211 or the other end 6211 of the electromagnet 6.

  Further, as shown in FIG. 3B, the electromagnet 6 is arranged so that one end 6211 thereof is on the upstream side in the transport direction and the other end 6211 is on the downstream side in the transport direction, and the first permanent magnet 7 is disposed on one of the magnetic poles. It is also possible to arrange the second permanent magnet 8 so that the same magnetic pole as one magnetic pole of the first permanent magnet 7 faces the other end of the electromagnet 6.

  Further, as shown in FIG. 3 (C), the core body 62 is formed by separately forming a pair of upper and lower straight portions 621 and a connecting portion 622 having a straight axis, and fastening each with, for example, a bolt or the like. The electromagnet 6 can also be configured by connecting the members together to form a substantially U-shape and providing the linear coils 621 of the core body 62 with cylindrical coils 61 each having a linear axis. In this case, the electromagnet 6 is arranged so that both ends 6211 and 6211 of the core body 62 are on the upstream side in the transport direction, one magnetic pole faces the one end 6211 of the electromagnet 6 and the other magnetic pole faces the other end 6211 of the electromagnet 6. Permanent magnets 7 may be arranged so as to face each other.

  Furthermore, as shown in FIG. 3D, the core body 62 is formed by a pair of straight portions 621 and a connecting portion 622 in which the base ends of the straight portions 621 are connected to each other and the axis is linear. It is also possible to provide the coil 61 only in the connecting portion 622.

  Furthermore, in this embodiment, although the case where the electromagnet 6 was arrange | positioned so that both ends 6211 and 6211 of the core body 62 were located in the up-down direction was demonstrated, it is not restricted to this, For example, it is to FIG. 4 (A) and (B) As shown, both ends 6211 and 6211 of the core body 62 may be arranged in the left-right direction, in other words, the linear portion 621 of the core body 62 may be arranged in the width direction of the transport trough 5. In this case, the first permanent magnet 7 and the second permanent magnet 8 may be arranged in the width direction of the transport trough 5 so as to face the respective leading ends 6211 and 6211 of the both linear portions 621.

  Furthermore, in the present embodiment, the case where the electromagnet 6 is arranged so that the axis of the linear portion 621 is parallel to the transport direction has been described. However, the present invention is not limited to this. For example, as shown in FIG. In addition, a substantially U-shaped core body 62 that is integrally formed with a pair of upper and lower straight portions 621 and a base portion of the straight portion 621 and a connecting portion 622 whose axis is curved, and the axis is linear The electromagnet 6 is configured so as to be perpendicular to the holding member 11. The electromagnet 6 is configured by inserting only the lower linear portion 621 of the core body 62 into the coil 61. It is also possible to do.

  Alternatively, as shown in FIG. 5B, a pair of left and right linear portions 621 and 621 and a connecting portion 622 whose axis is linear are formed separately, and the base end of one linear portion 621 is formed. The proximal end portion of the other linear portion 621 is fixed to the other end portion of the connecting portion 622 at one end portion of the connecting portion 622 by a fastening member, and the substantially U-shaped core body 62 and the axis are linear. The electromagnet 6 is provided with a cylindrical coil 61 and the linear portions 621 and 621 of the core body 62 are provided with the coils 61, respectively. The leading ends of the linear portions 621 and 621 are upstream and the connecting portion is downstream. Therefore, it is possible to arrange the linear portion 621 so that the axis of the linear portion 621 is perpendicular to the holding member 11.

  In the present embodiment, the case where an AC power supply is used to obtain power to be supplied to the electromagnet 6 has been described. However, a configuration may be used in which a signal from a low-frequency transmitter is amplified by a power amplifier. In this case, by adopting a digital switching type using, for example, a class D amplifier as a power amplifier, a heat dissipation mechanism or the like becomes unnecessary, and power consumption can be suppressed.

  Furthermore, the core body 62 has a columnar shape (solid shape) or a cylindrical shape (hollow shape) in which the axis is straight, or three straight portions 621 are arranged in parallel so that the base ends of the straight portions 621 are arranged. The substantially E shape comprised with the connection part 622 to connect may be sufficient.

  Furthermore, in the present embodiment, the case where the axis of the coil 61 is formed in a linear cylinder shape has been described. However, the present invention is not limited to this. For example, the axis of the coil 61 is substantially U-shaped. Alternatively, the coil 61 may be formed in a curved line.

  Moreover, when providing the several coil 61 in the several linear part of the core body 62, the case where each coil 61 is connected in series may be sufficient as the case where it connects in parallel.

The front view which shows the packaging machine provided with the vibration feeder which concerns on one Embodiment of this invention. The front view of the vibration feeder. (A) thru | or (D) is the schematic which shows the electromagnet and permanent magnet which concern on other embodiment. (A) is a principal part schematic diagram which shows the vibration feeder which concerns on other embodiment, (B) is a top view of (A). (A) And (B) is a principal part schematic diagram which shows the vibration feeder which concerns on other embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Packaging machine, 2 ... Vibrating feeder, 3 ... Hopper, 4 ... Rotary table, 5 ... Transport trough, 6 ... Electromagnet, 7 ... 1st permanent magnet, 8 ... 2nd permanent magnet, 9 ... 1st fixing | fixed part, 10 2nd fixing part, 11 ... holding member, 12 ... cover member, 13 ... support member, 14 ... fixing base, 41 ... annular groove, 51 ... bottom wall, 52 ... fitting part, 61 ... coil, 62 ... core Body: 91 ... 1st plate, 92 ... 1st blanket, 93 ... Iron plate, 101 ... 2nd plate, 102 ... 2nd blanket, 621 ... Linear part, 622 ... Connection part, 921 ... Fixed piece, 1021 ... Fixed piece

Claims (8)

  A transport trough that transports powder particles by vibration, and an electromagnet that has a coil and is arranged so that one end is upstream in the transport direction and the other end is downstream in the transport direction. A vibration feeder characterized in that a permanent magnet is arranged so as to face, and either an electromagnet or a permanent magnet is fixed to a transport trough.   A transport trough for transporting powder particles by vibration; and an electromagnet having a coil and disposed so that one end is on the upstream side in the transport direction and the other end is on the downstream side in the transport direction. The second permanent magnet is disposed so that the same magnetic pole as one magnetic pole of the first permanent magnet faces the other end of the electromagnet, and either the electromagnet or the two permanent magnets are disposed. A vibration feeder characterized by being fixed to the transport trough.   A conveying trough that conveys the granular material by vibration, and an electromagnet having a coil and arranged so that both ends thereof are either upstream in the conveying direction or downstream in the conveying direction, and one magnetic pole is the electromagnet A vibration feeder, characterized in that a permanent magnet is disposed so as to face one end and the other magnetic pole faces the other end of the electromagnet, and either the electromagnet or the permanent magnet is fixed to the transport trough.   A transport trough that transports powder particles by vibration, and an electromagnet having a coil and arranged so that both ends thereof are either upstream in the transport direction or downstream in the transport direction, and the first permanent magnet is One magnetic pole is arranged so as to face one end of the electromagnet, and the second permanent magnet is arranged so that the magnetic pole opposite to one magnetic pole of the first permanent magnet faces the other end of the electromagnet, and the electromagnet or both permanent magnets Any one of the above is fixed to the transport trough.   The electromagnet includes a coil and a core body inserted into the coil, and the core body includes a pair of linear portions and a base portion of the linear portions and a connecting portion whose axis is linear or curved. 5. The coil according to claim 3, wherein the coil is formed in a substantially cylindrical shape whose axis is linear, and is provided in a linear portion of the core body. Vibration feeder.   The electromagnet is configured such that only one linear portion of the core body is inserted into the inside of the coil, and the both ends of the core body are arranged in the vertical direction. Vibrating feeder.   7. The vibration feeder according to claim 6, wherein only the lower straight portion of the core is inserted into the coil.   One linear part of the core is inserted into the first coil, and the other linear part of the core is inserted into the second coil connected in series or in parallel with the first coil. The vibration feeder according to claim 5.

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