JP2018020892A - Bowl feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bowl feeder which can reduce a degree (contact time and the number of contact) of contact of a transport object, which is placed into a storage part of a bowl and transported in a desired direction by vibration, with a transport surface to prevent/inhibit deterioration of the transport processing ability.SOLUTION: A bowl feeder B includes a placement surface B81 and a vibration source which vibrates the placement surface B81 and transports a transport object W on the placement surface B81 by vibration. An entire part or part of the placement surface B81 is formed by a porous material BS. The bowl feeder B is configured to jet air supplied from an air supply source BA to the transport object W on the placement surface B81 from below through the porous material BS to lift the transport object W from the placement surface 81.SELECTED DRAWING: Figure 2

Description

  The present invention includes a bowl that accommodates an object to be conveyed, and the object to be conveyed, such as a workpiece, existing in a reservoir formed on the bottom surface of the bowl is placed in a spiral bowl conveyance path whose start end is continuous with the reservoir. It is related with the bowl feeder which can be conveyed along.

  2. Description of the Related Art Conventionally, as a vibration conveyance device that conveys an object to be conveyed (workpiece) such as an electronic component by vibration, a storage unit mainly formed in a bowl that can accommodate the object to be conveyed, formed at the bottom of the bowl, and an inner peripheral wall of the bowl There is known a bowl feeder provided with a bowl conveyance path formed in a spiral shape. Such a bowl feeder is formed so that the starting end of the bowl conveyance path is continuous with the storage section, and the object to be transferred input from the predetermined input section toward the storage section is vibrated toward the start end of the bowl conveyance path. It is configured such that it can be conveyed and subsequently conveyed along a bowl conveyance path to a predetermined supply destination. Also, the object to be conveyed returned (returned in) from the bowl conveyance path or the conveyance path provided downstream of the bowl conveyance path to the storage unit is also conveyed toward the beginning of the bowl conveyance path by vibration. (For example, refer to Patent Document 1 below).

JP 2006-309541 A

  By the way, in the bowl feeder adopting the above-described configuration, the difference in strength is generated at the bottom of the bowl, that is, the storage portion, depending on the distance from the excitation source, the excitation frequency, and the like. It tends to be smaller as it is closer to, and the object to be transported that has been thrown into the reservoir tends to stay in the center of the bowl and in the vicinity thereof, and the object to be transported cannot be smoothly transported toward the beginning of the bowl transport path. Things happen. That is, the closer to the center of the bowl, the smaller the amplitude of the reservoir, so the opportunity and time of contact between the transport object in the vicinity of the center of the bowl and the mounting surface that is the upward surface of the reservoir Accordingly, the object to be transported is easily charged with static electricity (friction charging, contact charging, peeling charging). Then, the force that the object to be transported sticks to the mounting surface due to static electricity increases, and if the object to be transported with such static electricity continues to be transported, The speed is lower than the intended transport speed, and the transport target cannot be transported smoothly, resulting in a decrease in transport processing capability.

  The present invention has been made paying attention to such a problem, and a main object thereof is to place an object to be transported, which is put into a storage part of the bowl and transported in a desired direction by vibration, on the storage part. The purpose of the present invention is to provide a bowl feeder that can reduce the degree of contact (contact time and number of times) and prevent or suppress a decrease in conveyance processing capacity.

  That is, the present invention includes a storage portion that is formed on the bottom surface of a bowl that can accommodate a conveyance object and that can store a large number of conveyance objects, and a spiral that is formed on the inner peripheral surface of the bowl and has a starting end continuous with the storage portion. And a bowl conveying surface, which is an upward surface of the storage unit, and a bowl conveying surface, which is an upward surface of the bowl conveying path, are vibrated by an excitation source, The present invention relates to a bowl feeder that can be transported to a predetermined transport destination while moving a transport object on the bowl transport surface. Here, the “mounting surface” and “bowl conveyance path” in the present invention are either a horizontal or substantially horizontal surface (horizontal plane) or a surface inclined at an inclination angle with respect to the horizontal (inclined surface, vertical surface). The concept is encompassed, and the shape is not particularly limited. Moreover, as a conveyance target object, although microcomponents, such as an electronic component, can be mentioned, for example, articles other than an electronic component may be sufficient.

  In the bowl feeder according to the present invention, at least all or part of the mounting surface is made of a porous material, and the air supplied from the air supply source is porous to the object to be conveyed on the mounting surface. It is characterized in that the object to be transported can be levitated from the placement surface by spraying through.

  With such a bowl feeder, the air to be conveyed is forcibly floated from the mounting surface by injecting air supplied from an air supply source through the porous material onto the conveying object on the mounting surface. Thus, it is possible to secure a state in which the conveyance object does not contact the placement surface or is difficult to contact. In the bowl feeder according to the present invention, the object to be transported on the mounting surface, which is entirely or partially made of a porous material, moves in a predetermined direction by vibration from the excitation source, and moves in the predetermined direction. During the process of moving, since the opportunity and time for the moving conveyance object to contact the placement surface can be reduced, compared to the configuration in which the moving conveyance object keeps contacting the placement surface, The transport object being transported is less likely to be charged with static electricity (friction charge, contact charge, peeling charge). As a result, the transport object being transported is less likely to adhere to the mounting surface, resulting in transport speed caused by static electricity. Can be eliminated and suppressed, and the object to be transported can be smoothly transported at the intended transport speed on the placement surface. Therefore, according to the present invention, even in a bowl feeder whose amplitude tends to be smaller as it is closer to the center of the bowl among the placement surfaces that are vibrated by the excitation source, the conveyance object on the placement surface is small. It can be efficiently and smoothly transported toward a predetermined transport destination (starting end of the bowl transport path) with an amplitude.

  In the bowl feeder according to the present invention, not only all or part of the mounting surface but also all or part of the bowl conveying surface is made of a porous material, and air supplied from an air supply source is supplied to the bowl conveying surface. It is also possible to configure the transport object so that it can float from the bowl transport surface by spraying the transport object through the porous material. With such a configuration, compared to a configuration in which the conveyance object moving on the bowl conveyance surface keeps in contact with the bowl conveyance surface, the conveyance object being moved is static (friction charge, contact charge, peeling charge). It becomes difficult to take on. As a result, it is difficult for the moving conveyance object to adhere to the bowl conveyance surface, and the problem of a decrease in the conveyance speed caused by static electricity can be solved and suppressed. It can be smoothly transported at a transport speed of.

  In particular, in the present invention, if the bowl feeder is provided with an ionizer that injects ionized air toward at least the periphery of the transport object that has been levitated from the mounting surface and the surface of the transport object that has levitated by air from the air supply source, The ionized air is reliably blown to the entire conveyance object including the surface that has been in contact with the mounting surface until just before ascending, by injecting ionized air around the conveyed conveyance object and the floating conveyance object with an ionizer. In addition, it is possible to blow ionized air onto a predetermined region of the mounting surface where the transported object that has been lifted is in contact until immediately before. If the ionizer that injects ionized air toward the transported object that has floated in this way can be shared as an ionizer that injects ionized air to the mounting surface around the transported object that has floated, Compared to an aspect in which an ionizer that injects ionized air to the object to be transported and an ionizer that injects ionized air over a wide range over the entire mounting surface are separately provided, the number of parts is reduced and the cost is reduced. This is advantageous in that the ionizer itself can be made compact and the amount of ionized air used can be reduced by limiting the injection region of the ionizer. Further, in the present invention, it is also possible to configure a bowl feeder provided with an ionizer that injects ionized air toward the periphery of the transport object and the transport object that has floated from the bowl transport surface as well as the mounting surface. is there.

  In addition, in the case of a bowl feeder equipped with an ionizer, the placement is performed by air from an air supply source that is ejected through the porous material to the transport object on the placement surface or the transport object on the bowl transport surface. On the surface and the bowl conveying surface, an air flow is formed that causes air to rise from the mounting surface and the bowl conveying surface, and the air flow of ionized air sprayed by the ionizer on the object to be conveyed placed in such an air flow is This is a factor that changes the wind pressure distribution around the conveyance object, and even if multiple conveyance objects adhere to each other due to static electricity or adhesiveness on the mounting surface or the bowl conveyance path, By changing the pressure distribution, it is possible to cause different irregular behaviors of the respective conveyance objects, and it can be expected that the adhesion state between the conveyance objects is released.

  In the present invention, it is possible to apply ionized air as the air supplied from the air supply source. With such a configuration, air from the air supply source, that is, ionized air can be used to mount the mounting surface. The object to be conveyed that has floated from the bowl conveyance surface is in a state where ionized air is blown at that time, and can quickly neutralize and remove static electricity, thereby contributing to an improvement in conveyance processing capacity.

  In the present invention, the ionized air is applied as the air supplied from the air supply source, and the bowl feeder provided with the above-described ionizer is not configured, or the ionized air is not applied as the air supplied from the air supply source. A bowl feeder including the above-described ionizer can be configured, or a bowl feeder that does not include the above-described ionizer and that uses ionized air as air supplied from an air supply source can be configured.

  According to the present invention, air is supplied to a mounting surface made of a porous material, and the transport target is forced from the mounting surface by air blown through the porous material toward the transport target on the mounting surface. It is possible to ensure that the object to be conveyed is less likely to be charged with static electricity, and to convey the object to be conveyed at the desired conveying speed in the direction of vibration applied from the excitation source even with a small amplitude. It is possible to prevent and suppress a decrease in the conveyance processing capacity of the bowl feeder.

1 is a side view schematically showing a partially broken portion of a bowl feeder according to a first embodiment of the present invention. FIG. 4 is a side cross-sectional view schematically showing a part of the bowl with a part omitted. The external appearance schematic diagram of lens type LED which is an example of the conveyance target applied to the bowl feeder which concerns on this invention. The figure which shows the modification of the bowl feeder which concerns on the embodiment corresponding to FIG.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, the bowl feeder B according to the present embodiment transfers a conveyance object W such as an electronic component (for example, a lens type LED shown in FIG. 3) in a spiral conveyance path (bowl conveyance path B1). ) It is a device that transports to a predetermined transport destination (supply destination) while moving by vibration. The bowl feeder B according to the present embodiment includes a bowl B2 that conveys the accommodated conveyance object W while aligning it, a support portion B3 that supports the bowl B2, and a vibration source B4 that generates vibration in the bowl B2. ing.

  As shown in FIG. 1, the support portion B3 connects the movable base B5 attached to the bottom of the bowl B2, the fixed base B6 fixed to the floor via the vibration isolating rubber BG, and the movable base B5 and the fixed base B6. And a connecting portion B7 made of a leaf spring or the like, and supports the bowl B2 through the movable base B5 so as to be able to vibrate.

  As shown in FIG. 1, the vibration source B4 of the present embodiment is provided between a movable base B5 and a fixed base B6, and an electromagnetic attraction force is applied between the movable base B5 and the fixed base B6 so that the bowl A torsional vibration having a high frequency is generated with respect to B2. By generating vibration for the bowl B2, the conveyance object W accommodated in the bowl B2 can be moved along the conveyance path 2 of the bowl B2.

  As shown in FIG. 2 (the figure is a schematic sectional view of the bowl B2 extracted from FIG. 1), the bowl B2 is formed on the bottom surface and has a substantially circular storage section B8 that can store a large number of workpieces W. The bowl-shaped thing provided with the bowl conveyance path B1 (it is also called a track | truck) formed in the spiral shape which inclines along the internal peripheral wall B9 with the predetermined part in the peripheral part of the storage part B8 as a starting end.

  The storage unit B8 has a placement surface B81 that is an upward surface set so that the center side is higher than the outside in the radial direction, and the conveyance object W accommodated in the vibration of the bowl B2 or in the storage unit B8. The conveyance target W on the mounting surface B81 is moved radially outward by its own weight. The transport object W that has moved radially outward on the mounting surface B81 reaches the start end of the bowl transport path B1, passes through the start end of the bowl transport path B1, and moves along the bowl transport path B1.

  The bowl conveyance path B1 has a starting end that is continuous with the storage portion B8, and the bowl conveyance surface B11 that is an upward surface is set to a flat surface that is inclined downward, for example, radially outward. Then, the conveyance object W is in contact with the inner peripheral wall B9 of the bowl B2 while being in contact with the inner peripheral wall B9 of the bowl B2 due to the radially outward force of the conveyance force received by the conveyance object W due to vibration and the inclination of the bowl conveyance surface B11 (the bowl conveyance path B1). It is transported toward the terminal end side). In the present embodiment, alignment means (not shown) is provided at a predetermined location in such a bowl conveyance path B1, and only the conveyance object W in a predetermined attitude is conveyed downstream in the conveyance direction by the alignment means, and is not in a predetermined attitude. The conveyance object W is configured to be returned (dropped) to the storage unit B8. The bowl feeder B of this embodiment is connected and aligned so that the end of the bowl transport path B1 is continuous with the start end of a linear transport path (also referred to as a straight track) provided in a linear feeder (not shown). The conveyance object W is configured to be conveyed (supplied) to the linear feeder.

  And the bowl feeder B which concerns on this embodiment is all or substantially all of the mounting surface B81 which is an upward surface among the storage parts B8, and all or substantially all of the bowl conveyance surface B11 which is an upward surface among bowl conveyance paths B1. All are comprised by the block body BS which consists of porous materials. Specifically, in the storage unit B8 and the bowl transport path B1, an area with a predetermined pattern in FIG. 2 (the figure is a schematic sectional view of the bowl shown in FIG. 1) is a block body made of a porous material. It is composed of BS.

  The porous material in the present embodiment is formed, for example, by sintering a mixture of an aggregate made of a granular material of an inorganic material and a binder (binder) that connects the aggregates. Preferable examples of the aggregate made of inorganic material granular materials include alumina and silicon carbide, and preferable examples of the binder include vitrified, zirenoid, cement, rubber, glass and the like. it can. Such a ceramic porous material can be made into a molded product according to the mold by charging the mixed material of the aggregate and the binder into the mold and sintering it. An infinite number of fine pores are formed inside the porous material by a sintering process, and the air flow path is formed by connecting the fine pores opening on the surface of the porous material and the internal fine pores. The inner diameter of the fine pores is remarkably small as compared with the case of machining, and an infinite number of fine pores are formed over the entire surface of the porous material. Note that the types of aggregates and binders in the present invention are not particularly limited to those described above, and those appropriately selected can be applied. In the present embodiment, a block-shaped porous material (block body BS made of a porous material) that constitutes most of the bowl B2 is formed using an appropriate mold or the like. Hereinafter, the block body BS made of a porous material is referred to as a “porous block body BS”.

  As described above, the porous block body BS has innumerable fine pores formed therein, and has an air flow path in which fine pores opened on the surface and internal fine pores are formed continuously. In other words, the porous block body BS has an inside through which fluid can flow (permeate), and a large number of holes are evenly exposed on the entire surface. Each hole (micropore) has a minute size, for example, about 60 μm, at which the conveyance target W does not fall into the hole. As shown in FIG. 2, a first cavity portion BS1 penetrating in the height direction is formed in the central portion of the porous block body BS, and the bottom surface of the porous block body BS communicates with the first cavity portion BS1. A second cavity BS2 is formed. Further, the outer peripheral surface of the porous block body BS is covered with a bowl-shaped cover BC formed of an appropriate material such as metal.

  The bowl feeder B of this embodiment is provided with an air supply nozzle BN facing the second cavity BS2, and air supplied from the air supply source BA is directed from the air supply nozzle BN to the inside of the porous block body BS. Is set to inject. In FIG. 2, piping connecting the air supply source BA and the air supply nozzle BN is indicated by a two-dot chain line, and the flow of air supplied from the air supply source BA to the air supply nozzle BN is schematically indicated by arrows. .

  In the present embodiment, a plurality of air supply nozzles BN are arranged at a predetermined pitch, and the air injected from each air supply nozzle BN toward the porous block body BS permeates into the porous block body BS, It is set so as to be discharged from the mounting surface B81 of the reservoir B8 and the bowl transport surface B11 of the bowl transport path B1. In addition, by setting the outer peripheral surface of the porous block body BS with the above-described cover BC, a fluid such as air is set so as not to permeate the outer peripheral surface of the porous block body BS. It is also possible to set the outer peripheral surface of the porous block body BS to a sealing layer formed by a sealing process using a resin or the like so that fluid such as air does not pass through the sealing layer. . In this embodiment, ionized air is applied as the air supplied from the air supply source BA.

  In the bowl feeder B of the present embodiment, the bowl B2 is fixed to the movable base B5 by, for example, bolts (not shown). In this fixing process, the second cavity BS2 can be used as a bolt fixing portion. In addition, if it is the structure which fixes the outer periphery vicinity of bowl B2 to movable stand B5, 2nd cavity part BS2 will not be utilized as a fixing | fixed part of a volt | bolt, but will function only as an air flow path (fluid flow path). In any case, the cavities (the first cavities BS1 and the second cavities BS2) formed in and around the porous block body BS allow the air supplied from the air supply section to be supplied to the entire porous block body BS. It can be seen as a way to spread.

  And according to the bowl feeder B which concerns on this embodiment, the conveyance target object W which was thrown into storage part B8 and exists on mounting surface B81, and the conveyance target object W on bowl conveyance surface B11 are made into a predetermined direction by vibration. In addition, it is possible to transport the object W to be conveyed in a predetermined direction in a state where it is levitated from the mounting surface B81 and the bowl conveying surface B11 by the air supplied from the air supply source BA.

  For example, as shown in FIG. 3A, for example, the conveyance object W is a minute electronic component called a lens-type LED in which a flat bottom surface W1 and a hemispherical lens portion W2 are integrally assembled. Since the flat bottom surface W1 has a large surface contact area, and the hemispherical lens portion W2 has a small surface contact area, it is unstable if the lens portion W2 faces downward (downward posture).

  Therefore, when such a lens-type LED is transported by the bowl feeder B according to the present embodiment, the lens-type LED is directed toward the lens-type LED through the porous block body BS constituting the placement surface B81 of the storage unit B8 and the bowl transport surface B11. When air is blown from below, the lens-type LED in the downward posture shown in FIGS. 3B and 3C has the posture shown in FIG. 3D, that is, the posture in which the lens portion W2 faces upward (upward). (Posture), and air is continuously blown onto the flat bottom surface W1 after the posture change, so that the lens LED is maintained in a stable upward posture, and smooth conveyance by air can be realized. That is, with the bowl feeder B according to the present embodiment, it is possible to eliminate the need for specially providing a posture conversion mechanism for the conveyance object. In FIGS. 7B and 7C, a lens-type LED in an intermediate position between a downward posture and an upward posture is indicated by an imaginary line (two-dot chain line), and FIGS. In d), the air blowing direction is schematically shown by arrows.

  As described above, the bowl feeder B according to the present embodiment is a transport target that travels on the transport target W or the bowl transport surface B11 that is placed on the placement surface B81 that is vibrated by the vibration source B4. The object W can be transported in a predetermined vibration direction, and substantially all of the placement surface B81 and the bowl transport surface B11 of the storage unit B8 are configured by the porous block body BS and supplied from the air supply source BA. By injecting air from below through the porous block body BS to the transport target W on the mounting surface B81 and the transport target W on the bowl transport surface B11, the air is placed on the mounting surface B81 and the bowl transport surface B11. In addition, a state in which an air flow is generated to float the conveyance target W from the placement surface B81 or the bowl conveyance surface B11, and the conveyance target W is forcibly floated from the placement surface B81 or the bowl conveyance surface B11. It can be transported. As a result, according to the bowl feeder B according to the present embodiment, the conveyance during the conveyance process is performed as compared with the aspect in which the conveyance target W is continuously in contact with the placement surface B81 and the bowl conveyance surface B11. The opportunity and time for the object W to contact the mounting surface B81 and the bowl conveyance surface B11 can be reduced, and the conveyance object W during conveyance is less likely to be charged with static electricity (friction charge, contact charge, peeling charge). The problem that the conveyance object W adheres to the placement surface B81 or the bowl conveyance surface B11 due to the above and the conveyance speed decreases can be eliminated / suppressed, and the conveyance object W on the placement surface B81 and The conveyance object W on the bowl conveyance surface B11 can be smoothly conveyed at an intended conveyance speed. Therefore, according to the bowl feeder B according to the present embodiment, even in the bowl feeder B in which the amplitude tends to be smaller as it is closer to the center portion of the bowl B2 in the mounting surface B81 that is vibrated by the excitation source B4, It is possible to efficiently and smoothly convey the conveyance target W on the mounting surface B81 toward a predetermined conveyance destination (starting end of the bowl conveyance path B11) with a small amplitude.

  In particular, in the bowl feeder B according to this embodiment, in addition to the mounting surface B81, the bowl transport surface B11 is also made of a porous material, and the air supplied from the air supply source BA is transported on the bowl transport surface B11. Since the conveying object W is set so as to be able to float from the bowl conveying surface B11 by spraying the object W through the porous material, for example, the vibration source B4 of the bowl conveying surface B81 that vibrates by the vibration source B4. Even if there is a predetermined location where the amplitude is relatively small due to the relative distance between the transport object W and the transport target W passing over the predetermined location, the transport object W is directed toward the predetermined transport destination (starting end of the bowl transport path B11) with a small amplitude. Can be transported efficiently and smoothly.

  Further, according to the bowl feeder B according to this embodiment capable of forcibly conveying the conveyance target object W from the placement surface B81 and the bowl conveyance surface B11, the conveyance target object W is damaged. It is possible to effectively prevent / suppress the occurrence of breakage / dirt and wear of the mounting surface B81 and the bowl conveying surface B11.

  Furthermore, in this embodiment, the bowl feeder B causes ionized air to be directed toward the periphery of the transport object W and the transport object W that has floated from the mounting surface B81 and the bowl transport surface B11 by air from the air supply source BA. An ionizer (not shown) for spraying is provided. And it includes the surface that has been in contact with the mounting surface B81 or the bowl transport surface B11 until just before ascending by injecting ionized air by the ionizer around the transported object W that has surfaced and the periphery of the transported object W that has surfaced. The ionized air can be reliably blown over the entire transport target W, and the ionized air can also be sprayed onto a predetermined region of the placement surface B81 or the bowl transport surface B11 that has been in contact with the floated transport target W. Is possible. In addition, the ionizer that injects ionized air toward the transported object W that has floated is shared as an ionizer that injects ionized air to the mounting surface B81 or the bowl transport surface B11 around the transported object W that has floated up. The ionizer which injects ionized air with respect to the conveyance target W and the ionizer which injects ionized air in the wide range covering the whole mounting surface B81 and the whole bowl conveyance surface B11 are provided separately. This is advantageous in that the number of parts can be reduced and the cost can be reduced.

  Furthermore, according to the bowl feeder B provided with the ionizer, the air supply source which injects from the lower side through the porous block body BS with respect to the conveyance target W on the mounting surface B81 and the conveyance target W on the bowl conveyance surface B11. Air from the BA forms an air flow that causes air to rise from the mounting surface B81 and the bowl transport surface B11 on the mounting surface B81 and the bowl transport surface B11, and a transport object placed in such airflow. The air flow of ionized air jetted onto the object W by the ionizer becomes a factor that changes the wind pressure distribution around the object to be conveyed W, and a plurality of objects are conveyed on the mounting surface B81 and the bowl conveying surface B11 due to static electricity or adhesiveness. Even if the objects W adhere to each other, irregularities that are different from each other in the respective conveyance objects W due to a change in the pressure distribution around the conveyance object W. Can induce dynamic, it can be expected to release the adhesion state of the conveyance object W together.

  Further, in the present embodiment, ionized air is applied as the air supplied from the air supply source BA. Therefore, the transfer that has floated from the mounting surface B81 or the bowl transfer surface B11 by the ionized air supplied from the air supply source BA. The object W is in a state in which ionized air is blown at that time, and can quickly neutralize and remove static electricity, thereby further improving the conveyance processing capability.

  The present invention is not limited to the above-described embodiments. For example, in each of the above-described embodiments, an example in which the storage unit of the bowl feeder and the bowl conveyance path are configured by a common porous material (porous block body) is illustrated, but the porous material that configures the mounting surface of the storage unit The material and the porous material constituting the bowl conveyance surface of the bowl conveyance path may be separate parts.

  Further, a plurality of regions or only one region separated from each other on the mounting surface is constituted by a porous material, or a plurality of regions or only one region separated from each other on a bowl transport surface by a porous material. It is also possible to configure. That is, in the bowl feeder according to the present invention, it is possible to adopt a configuration in which the porous material is partially applied instead of the entire placement surface and the entire bowl conveyance path. As an example of an aspect in which only a specific portion of the mounting surface is configured with a porous material, only the central portion of the mounting surface and the portion in the vicinity of the central portion that tend to have a relatively small amplitude on the mounting surface are formed of the porous material. The aspect to comprise can be mentioned. In addition, as an example of a configuration in which only a specific portion of the bowl conveyance surface is made of a porous material, the posture of the conveyance object on the bowl conveyance surface or the upstream end (starting end) in the conveyance direction on the bowl conveyance surface or the vicinity of the upstream end is changed. The part which wants to implement can be mentioned.

  Moreover, in the above-mentioned embodiment, it is the surface which stood a predetermined angle with respect to the bowl conveyance surface among the inner peripheral walls of the bowl (see reference numeral 9 in FIG. 1), and inward that constitutes the bowl conveyance path together with the bowl conveyance surface From the surface (the surface facing the center side of the bowl), it is also possible to configure so that air is not injected. Specifically, the inward surface of the inner peripheral wall of the bowl is set to a sealing layer that does not allow fluid to flow by the sealing process described above, or a predetermined region including the inward surface of the inner peripheral wall of the bowl is made porous. What is necessary is just to form with the material which is not a material.

  Moreover, as shown in FIG. 4, the bowl feeder which concerns on this invention comprises the mounting surface B81 of the storage part B8 with a porous material, and comprises the bowl conveyance surface B11 of the bowl conveyance path B1 with a porous material. Instead, it may be made of a known appropriate material. That is, in the present invention, the porous material block body BS that forms the storage portion and the nonporous block body BH that forms the bowl conveyance path are separately manufactured, and the porous material block body BS and the nonporous material are formed. It is possible to configure a bowl feeder provided with a bowl B2 in which the block body BH is integrally assembled by an appropriate fixing means. FIG. 4 is a diagram corresponding to FIG. 2, and in the respective drawings, parts and parts corresponding to each other are denoted by the same reference numerals.

  The bowl B2 shown in FIG. 4 forms a first cavity portion BS1 penetrating in the height direction in the central portion of the porous block body BS, and communicates with the first cavity portion BS1 on the bottom surface of the porous block body BS. A second cavity portion BS2 is formed, and a ring-shaped third cavity portion BS3 that communicates with the outer peripheral end of the second cavity portion BS2 and extends upward by a predetermined dimension is formed. The air supply nozzle BN is provided at a position facing the second cavity portion BS2 and the third cavity portion BS3, respectively, and the air supplied from the air supply source BA is directed from the air supply nozzle BN to the inside of the porous block body BS. Is set to inject. In FIG. 4, as in FIG. 2, the piping connecting the air supply source BA and the air supply nozzle BN is indicated by a two-dot chain line, and the flow of air supplied from the air supply source BA to the air supply nozzle BN is indicated by an arrow. This is shown schematically. Moreover, in the bowl B2 shown in FIG. 4, the outer peripheral surface of the porous block body BS can be distinguished into a portion facing the third cavity BS3 and a portion contacting the non-porous block body BH. A portion of the outer peripheral surface of the block body BS that faces the third cavity BS3 can pass a fluid such as air, and a portion of the outer peripheral surface of the porous block body BS that contacts the non-porous block body BH is air or the like. The fluid is set so as not to permeate.

  Even in such a bowl feeder, the air supplied from the air supply source BA is jetted from below through the porous block body BS to the object W on the placement surface B81, thereby conveying the object W. Can be forcedly levitated from the mounting surface B81. As a result, the transport target W is placed on the mounting surface B81 to which vibration is applied by the excitation source, compared to the mode in which the transport target W is kept in contact with the mounting surface B81. The opportunity and time of contact with the surface B81 can be reduced, and the object to be conveyed W during conveyance is less likely to be charged with static electricity (friction charge, contact charge, peeling charge) and is transferred to the mounting surface B81 due to static electricity. The problem that the object W adheres and the conveyance speed decreases can be eliminated and suppressed, and the object W on the placement surface B81 can be smoothly conveyed at the intended conveyance speed. Therefore, according to the bowl feeder according to the present embodiment, even if the bowl feeder is such that the amplitude tends to be smaller as it is closer to the center portion of the bowl B2 in the placement surface B81 that is vibrated by the excitation source, the placement surface It is possible to efficiently and smoothly convey the conveyance object W on B81 toward a predetermined conveyance destination (starting end of the bowl conveyance path B11) with a small amplitude.

  In addition, in the bowl feeder of the present invention, when adopting a configuration including an ionizer that injects ionized air onto the object to be conveyed that has floated from the placing surface or the bowl conveying surface, the entire placing surface or the entire bowl conveying surface is used. It can be set so that ionized air is ejected toward it, or it can be set so that the ionized space is ejected toward a specific part on the mounting surface or a specific part on the bowl conveyance surface. If the ionization space is set to be ejected toward a specific part on the mounting surface or a specific part on the bowl transport surface, the ionizer itself is made compact and the amount of ionized air used is reduced by limiting the ionizer injection area. Can be achieved.

  Moreover, you may comprise so that positive ionized air and negative ionized air may be injected by an ionizer alternately. With such a configuration, any charged workpiece can be reliably neutralized and removed with either positive ionized air or negative ionized air or both ionized air.

  Moreover, what is necessary is just to comprise so that the injection time of the ionized air by an ionizer can be set and adjusted based on various conditions, such as the kind of conveyance target object. In addition, you may comprise the bowl feeder which is not equipped with the ionizer.

  In addition, the specific configuration of the excitation source in the present invention is not particularly limited, and a well-known one can be applied.

  Further, in the bowl feeder of the present invention, it is possible to adjust the jetting force of the air supplied from the air supply source and sprayed toward the conveyance object on the mounting surface or the conveyance object on the bowl conveyance surface, It is also possible to select whether to inject continuously or intermittently.

  Instead of ionized air, dry air may be applied as the air supplied from the air supply source. A specific configuration for supplying air from the air supply source to the porous material (a type of an air joint such as a nozzle and a layout of piping) is not particularly limited, and an appropriate configuration can be adopted.

  In addition, the work that is the object to be transported is not limited to the above-described lens-type LED. Good.

  Further, in the present invention, instead of or in addition to the porous material formed in the block shape, for example, the whole or a part of the mounting surface, the bowl conveyance surface by the porous material formed in a sheet shape or a plate shape. You may make it comprise all or one part.

  In addition, the specific configuration of each part is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

B ... Bowl feeder B11 ... Bowl conveyance surface B4 ... Excitation source B81 ... Mounting surface BA ... Air supply source BS ... Porous material (porous block body)
W ... Object to be transported

Claims (4)

A storage portion that is formed on the bottom surface of a bowl that can store a transfer object, and that can store a large number of transfer objects, and a spiral bowl that is formed on the inner peripheral surface of the bowl and has a starting end continuous with the storage portion The conveying object on the placement surface by vibrating a mounting surface that is an upward surface of the storage unit and a bowl transportation surface that is an upward surface of the bowl conveyance path by an excitation source. And a bowl feeder that can be transported to a predetermined transport destination while moving the transport object on the bowl transport surface,
At least all or part of the mounting surface is made of a porous material,
The air supply source is configured to be able to float from the mounting surface by injecting air supplied from an air supply source to the transporting object on the mounting surface through the porous material. Bowl feeder. All or part of the bowl conveying surface is made of a porous material,
The air supply source is configured to be able to float from the bowl conveyance surface by injecting air supplied from an air supply source to the conveyance object on the bowl conveyance surface through the porous material. The bowl feeder according to 1. 3. The ionizer according to claim 1, further comprising: an ionizer that injects ionized air toward at least the periphery of the transport object that has floated from the placement surface and the floated transport object by air from the air supply source. Bowl feeder. The bowl feeder according to any one of claims 1 to 3, wherein the air supplied from the air supply source is ionized air.

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