JP4809496B1 - Transported object separation mechanism and transport apparatus equipped with the same - Google Patents

Abstract

Provided is a transported object separation mechanism capable of separating a transported object more reliably and uniformly than in the prior art and a transport apparatus using the same.
A transport object separating mechanism according to the present invention includes vent pipes (9, 8c, 8d) having an introduction port (9a) and a discharge port (8d) for a transport object (W), an outlet port (8d) opening inside the container, and a guide port. It has a separating net 7b facing the outlet 8d and having air permeability to the outside and a discharge port 7e through which the conveyed product W is discharged, and temporarily stores the conveyed product W led out from the outlet 8d. The transported object container 7 that is discharged from the discharge port 7e and the air flow from the introduction port 9a to the discharge port 8d are generated in the ventilation pipe, so that the transfer object W is introduced from the introduction port 9a and led out from the discharge port 8d. And airflow generation means 8 and 8a that are made to collide with the separating net 7b later.
[Selection] Figure 1

Description

  The present invention relates to a transported object separation mechanism and a transport apparatus including the same, and more particularly to a mechanism that separates transported objects from each other, which is preferable when transporting electronic components.

  In general, a parts feeder (vibration type conveying device) is used to supply conveyed items such as electronic components to various processing devices, inspection devices and the like. This parts feeder includes a bowl feeder having a bowl-shaped transport body having a spiral track, a linear feeder having a linear track, and the like, and transports a large number of randomly transported materials to a transport path (track). Finally, the conveyed product is supplied while being aligned in a row.

  When carrying a large number of conveyed items as described above, if at least a part of the conveyed item is sticky or the conveyed item is charged with static electricity, the conveyed items adhere to each other and become a lump. In some cases, it is not possible to efficiently shift to the aligned state. In such a case, for example, as described in Patent Document 1 below, an air outlet 20 is formed on the bottom surface (conveying surface) of the conveying path, and a mesh body is provided above the air outlet 20. In some cases, a workpiece separation mechanism 1 having a transported object receiver 15 having 16 is provided. By providing this workpiece separation mechanism 1, the workpiece W is blown upward by ejecting compressed air from the air ejection port 20, and the workpiece W is separated by an impact when it collides with the net body 16 or falls. Is done.

Japanese Patent No. 4024809

  However, in the parts feeder provided with the conventional workpiece separation mechanism 1, the workpiece W passing by the air ejected from the air ejection port 20 when a large number of workpieces W reach the air ejection port 20 in a dense state. May not be blown upward, and the workpiece W may not be sufficiently separated or may pass through the workpiece W without being processed. That is, since the scattering strength and the scattering direction of the workpiece W vary depending on the relative positional relationship of the workpiece W with respect to the opening position of the air outlet 20 and the posture of the workpiece, it is difficult to perform a uniform separation process on all the workpieces. Further, if the air amount or air pressure is set excessively in order to eliminate the shortage of the separation process, a large impact is applied when the workpiece W collides with the mesh body 16 or falls on the track due to the repulsive force. May be damaged.

  Therefore, the present invention solves the above-described problems, and its object is to provide a transported object separation mechanism capable of separating a transported object more reliably and uniformly than before and a transport apparatus using the transported material separating mechanism. is there.

In view of such circumstances, the transport object separating mechanism of the present invention, a vent line provided with inlet and outlet of the transported material, with Oite the outlet inside the container is opened toward the side, the It has a side part on which a separating net body that is opposed to the outlet port with a gap and is air permeable to the outside is installed, and a bottom part on which a discharge port for discharging the conveyed product is formed , A transport container that temporarily stores the transported material led out from the outlet and discharges it from the outlet; and by generating an air flow from the inlet to the outlet in the vent pipe, An air flow generating means for introducing the transported material from the introduction port and causing it to collide with the separation network after being led out from the lead-out port, and a bottom mesh body having air permeability to the outside at the bottom portion And the inner surface of the bottom mesh body is directed downward toward the discharge port. And wherein the configuring the oblique guide surface.

  According to the present invention, since the conveyed product is introduced from the introduction port of the ventilation duct by the air flow generated by the air flow generating means, passes through the inside, is led out from the discharge port, and collides with the separation network. Even if they are bonded due to adhesiveness, static electricity, etc., the transported object is affected by the impact received in the process of riding on the airflow and passing through the inside of the ventilation pipe, or by the impact received by colliding with the separation network facing the outlet. They are separated from each other and finally discharged from the discharge port of the carrier container. Therefore, by allowing the transported object to collide with the mesh body through the vent pipe, all the transported objects introduced into the vent pipe can be subjected to separation processing, and the air passes through the vent pipe with the airflow. Since the impact can be sufficiently applied when the vehicle collides with the net body, the conveyed product can be more reliably and uniformly separated than in the past. In particular, since the transported material is led out from the inside of the ventilation pipe by airflow toward the separation network, when the workpiece is blown up by the airflow as in the past, the scattering distance and the scattering direction vary and collide with the network. Since the aspect does not become non-uniform, it can be made to collide reliably and uniformly with the separating net.

In the present invention, the conveyance object container, said a separation net body is placed side, because it has a bottom and said outlet is formed, the bottom with separating net body side is installed By providing the discharge port at the outlet, the conveyed product led out from the outlet port falls to the bottom after colliding with the separating net, so that the conveyed product can be smoothly discharged by gravity.

In this case, the bottom because it has an inclined guide surface inclined downwardly toward the discharge port, toward the outlet conveyance object having fallen toward the bottom after having collided with the separation net body by the inclined guide surface Since it is guided, the conveyed product can be discharged more smoothly from the discharge port.

Further, the bottom because the bottom net body having air permeability to the outside are provided, the airflow by airflow emitted from the outlet port is enabled outflow from the bottom grid body to the outside is concentrated on the outlet Since it becomes difficult, it can avoid that a conveyed product is discharged | emitted by an airflow at an excessive speed by an airflow, and the fall of the conveyance efficiency by scattering of the discharged conveyed product can be prevented.

  In the present invention, the airflow generation means obtains a guided output of the conveyed product from the outlet port by blowing an airflow from a midway position of the ventilation pipe toward the outlet port, and the transfer to the inlet port. It is preferable to have an airflow injector structure that generates a suction force for an object. According to this, the transported object can be surely put on the airflow from the midway position toward the outlet, and sent out by the negative pressure generated on the upstream side of the ventilation duct by the airflow blown from the midway position. This makes it possible to generate a suction force. Therefore, the transported object can be sucked into the ventilation duct while avoiding the influence on the surroundings by the suction force to the inlet, and the sucked transported object is transported in the air flow without being scattered. Since the separation process can be performed by colliding with the mesh body, the scattering distance and the scattering direction vary depending on the relative positional relationship between the opening position of the air outlet and the conveyed object and the attitude of the conveyed object, as in the conventional method. It is possible to prevent the collision mode of the surface from becoming uneven and to perform more reliable and uniform separation processing. In addition, a necessary airflow can be generated in the entire vent pipe with a simple structure.

  In the present invention, it is preferable that an upstream side of the airflow injector structure further includes an introduction pipe that constitutes a part of the ventilation pipe line, and the introduction port is provided at a distal end of the introduction pipe. According to this, since the upstream portion of the ventilation pipe is configured by the introduction pipe, it is less likely to be restricted by the shape and structure of the conveyance body, such as the need to provide a perforated portion in the conveyance body itself. It is possible to relatively freely set or change the position of. In this case, it is preferable that the introduction port is opened on the conveyance path in a non-contact state with the conveyance surface of the conveyance object. According to this, the position of the inlet can be set or changed without any restrictions on the shape or structure of the transport body, and it is easy to retrofit the transport object separation mechanism to the transport body. Become.

  In the present invention, it is preferable that at least a part of the vent pipe is composed of a dielectric pipe, and an electrically grounded conductive material is in contact with the outer surface of the pipe. In general, when at least a part of the ventilation pipe is made of a pipe material (for example, the introduction pipe), and the pipe material is made of a dielectric, the ventilation pipe and the transported object are caused by friction between the ventilation pipe and the transported object. While being charged together, the conveyed product is likely to be adsorbed to the inner surface of the ventilation pipe by electrostatic force, which may hinder the conveyance of the conveyed product. However, by bringing a conductive material that is electrically grounded into contact with the outer surface of the pipe as described above, static electricity charged on the pipe wall of the pipe can be reduced. Can be configured. In this case, it is desirable that the conductive material is spirally wound along the pipe line direction on the outer surface of the pipe material. According to this, since the conductive material can be brought into contact with the outer surface of the pipe material over a wide range in the pipe line direction, an electrical grounding effect can be enhanced and a part of the conductive material can be electrically grounded. This is sufficient, so it can be configured easily.

  Furthermore, it is preferable that an upper net body having air permeability with respect to the outside is provided at an upper portion of the transported object container. According to this, since the airflow discharged from the outlet can flow upward through the upper mesh body, the airflow toward the bottom can be reduced, so that the conveyed product is discharged from the discharge port at an excessive speed by the airflow. It is possible to avoid this, and it is possible to prevent a decrease in the conveyance efficiency due to scattering of the discharged conveyed product.

  In general, in a transport container in which a separating net is installed on the side of the transport container and a discharge port is formed in the bottom, at least one of the upper part and the lower part is connected to the outside. It is preferable that a breathable net is installed. According to this, since it is possible to prevent the airflow from concentrating on the discharge port, the same effect as described above can be obtained.

  In the present invention, the transporting material container is interposed between the separation mesh body and the discharge port, and the restriction plate prevents the transported material from going directly from the separation mesh body to the discharge port. Is preferably provided. According to this, since it is possible to avoid the conveyed product from directly jumping out from the discharge port after colliding with the separation net, it is possible to prevent a decrease in the conveyance efficiency due to the scattering of the discharged conveyed product.

Next, a transport apparatus according to the present invention includes a transport body having a transport path through which a transported object is transported, and an air inlet pipe having an introduction port and an outlet port that open toward a first transport position of the transport path. A passage, a side portion in which the outlet opening is opened sideways inside the container, a separation net that is opposed to the outlet opening and has air permeability to the outside is installed, and the conveyed product is discharged And a bottom portion formed with a discharge port that opens to a second transport position downstream of the first transport position, and temporarily stores the transported material derived from the outlet port, and The transported object container discharged from the discharge port, and the air flow from the introduction port to the discharge port are generated in the vent pipe, and then the transported material is introduced from the introduction port and led out from the discharge port. comprising the airflow generating means to impinge on the separation net body, and the bottom Bottom grid body having air permeability is provided for parts, the inner surface of the bottom portion networks body is characterized in that it constitutes an inclined guide surface directed downward toward the outlet.

  In the present invention, the airflow generation means obtains a guided output of the conveyed product from the outlet port by blowing an airflow from a midway position of the ventilation pipe toward the outlet port, and the transfer to the inlet port. It is preferable to have an airflow injector structure that generates a suction force for an object. In addition, it is preferable that an introduction pipe that constitutes a part of the ventilation duct is further provided on the upstream side of the airflow injector structure, and the introduction port is provided at a tip of the introduction pipe. In this case, it is desirable that the introduction port is opened on the conveyance surface in a non-contact state with the conveyance surface of the conveyance object.

  According to the present invention, it is possible to separate the transported object more reliably and more uniformly than before by performing a separation process in which the transported object is taken into the ventilation pipe and then collided with the net body. Can play. In particular, by sucking the conveyed product and introducing it into the ventilation path, the processing can be performed more reliably and uniformly.

The schematic plan view (a) and schematic side view (b) which show the whole structure of embodiment of the conveying apparatus which concerns on this invention. The top view which shows the Example of the conveyed product separation mechanism which can be applied to the said embodiment. The longitudinal cross-sectional view of the said Example which shows the cross section along the AA of FIG. Cross-sectional view (a) showing a state where a conductive material is wound around the outer surface of the introduction pipe, an enlarged cross-sectional view (b) of the contact portion of the conductive material, and an enlarged cross-sectional explanatory diagram (c) showing a state where no conductive material is provided . A schematic plan view (a) showing a net that can be used as a separating net, an upper net and a bottom net, an enlarged plan view (b) and an enlarged cross-sectional view (c) showing the structure of the net, and The enlarged plan view (d) and enlarged sectional view (e) which show the structure of another network object which can be used similarly.

  Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, an embodiment of a transport device according to the present invention will be described with reference to FIGS. 1 (a) and 1 (b). The transport apparatus 100 according to the present embodiment includes a first transport mechanism 4 including a bowl-type parts feeder (vibration transport apparatus, the same applies hereinafter), and a linear parts feeder connected to the first transport mechanism 4. And a second transport mechanism 5. The first transport mechanism 4 and the second transport mechanism 5 are mounted and fixed on the base 3. The base 3 is supported on the installation base 1 via a plurality of vibration isolation mechanisms 2 including elastic members such as coil springs as vibration isolation elements.

  The first transport mechanism 4 includes a rotary vibrator 40 (see FIG. 1) installed on the base 3 and a bowl-shaped transport body 41 fixed on the rotary vibrator 40, and rotational vibration. The transport body 41 is configured to vibrate in the rotational direction around the axis by the machine 40. A conveyed product reservoir 42 is provided in the center of the inner side of the conveyor 41, and a spiral conveying path 43 is formed on the inclined inner surface of the conveyed product reservoir 42 facing obliquely inward of the periphery. The conveyance path 43 is configured to proceed from the inside of the conveyed product reservoir portion 42 toward the outer peripheral side while gradually moving upward along the inclined inner surface. The conveyance path 43 is configured by a groove having an L-shaped cross section (a single groove having an open inner side) formed on the inclined inner surface. The groove width of the conveyance path 43 is wide on the upstream side close to the conveyance object reservoir 42 and allows a large number of conveyance objects (workpieces) W to be stacked or juxtaposed. Alternatively, the overlap and arrangement of the transported objects W are gradually eliminated while gradually decreasing and dropping a part of the transported object W inward from the transport path 43.

  The second transport mechanism 5 includes a linear vibrator 50 installed on the base 3 and a transport body 51 fixed on the linear vibrator 50, and the transport body 51 is elongated by the linear vibrator 50. It is configured to reciprocate in the direction. A transport path 52 that extends linearly along the longitudinal direction is provided on the top of the transport body 51. The upstream end of the transport path 52 is connected to the downstream end of the transport path 43 described above. By being transported along the transport path 52, the transported objects W that are finally aligned in a line with a predetermined transport posture are supplied from the distal end portion 53 to various processing devices (inspection device, mounting device, etc.) not shown. .

  The transported objects W are gradually removed from the transport paths 43 and 52 in the transport process or subjected to a posture change, so that the transported objects W are finally aligned in a row according to the required specifications. In order to satisfy the demand for high-speed conveyance in recent years, the upstream side portion of the conveyance path allows the overlap or alignment of the conveyance objects W and conveys them at a high density without restricting the conveyance posture of the conveyance object W, and on the downstream side As the process proceeds to step (1), the above transport posture, overlap or arrangement are gradually restricted and the transport posture is also regulated. At the downstream side portion of the transport path, the transported objects W must be finally aligned in a line with almost no gap in the predetermined transport posture. There is.

  In the above transport process, the transported object W that is excluded from the transport path 43 falls inward along the inclined inner surface, returns to the transported object reservoir 42, and rises again on the transport path 43. In addition, in the conveyance body 41 shown to Fig.1 (a), the conveyed product W in the inside is drawn only in a part of the conveyance path 43, and illustration of the conveyed product W is abbreviate | omitted in the other part. That is, in the conveyance path 43, a first conveyance path portion upstream from a first conveyance position 43 a described later, and a second conveyance path portion downstream from the second conveyance position 43 b described later. Although the conveyed product W is drawn, illustration of the conveyed product W is abbreviate | omitted in the part further upstream of the 1st conveyance path part, and the further downstream part of the 2nd conveyance path part. In addition, the region between the first transport path portion and the second transport path portion is a region where the transported material W does not inherently exist due to the operation of the transported material separation mechanism 10 described below.

  The transport apparatus 100 is provided with a transport object separation mechanism 10. In the transported object separation mechanism 10, a transported object container 7 is installed on the transport body 41 of the first transport mechanism 4, and an airflow injector structure 8 is connected and fixed to the transported object container 7. The air flow injector structure 8 is connected to an air supply pipe 8a made of a resin tube or the like for supplying a gas such as compressed air from a gas supply device such as a compressor, an air pipe, a pressure regulator, and a solenoid valve (not shown). In addition, by supplying gas (static charge air) to the air supply pipe 8a through an ionizer (not shown), it is possible to obtain a static eliminating effect on the conveyed product W. In addition, the air flow injector structure 8 is connected to an introduction pipe 9 such as a resin tube that constitutes the introduction side portion of the vent pipe. An introduction port 9 a is provided at the tip of the introduction tube 9. In addition, in FIG. 1 (a) and (b), the introduction tube 9 is shown with a dashed-two dotted line.

  In addition, as each said resin tube, what was comprised with fluororesins, such as tetrafluoroethylene, is preferable when reducing the friction with the conveyed product W and suppressing the charging accompanying this. The introduction pipe 9 is a member arranged on the most upstream side of the vent pipe of the present invention, and a large amount of the lump in which a plurality of transported objects W are combined is introduced and the lump is large. In order to prevent clogging, it is necessary to prevent the clogging from occurring. On the other hand, if the inner diameter is too large, the inlet 9a may be used in an air flow that does not cause excessive impact on the conveyed product W due to a collision with a separating net 7b described later. In this case, it is difficult to secure a sufficient suction force, and it is difficult to apply an appropriate impact that causes separation of the conveyed product W in the ventilation pipe due to collision between the conveyed products W or collision with the tube wall. The inner diameter (open sectional area) of the introduction tube 9 is important. When the opening cross-sectional shape of the introduction tube 9 is circular, elliptical, or rectangular, the inner diameter, the minor diameter, or the minimum facing surface distance of the introduction tube 9 may be made larger than the longitudinal dimension of the conveyed product W. Preferably, it is desirable to make it 3 times or less of the dimension, preferably 2 times or less.

  In this embodiment, the transported object separating mechanism 10 includes the transported object container 7, the airflow injector structure 8, and the introduction pipe 9. FIG. 2 is a plan view showing details of the conveyed product separation mechanism 10, and FIG. 3 is a longitudinal sectional view showing details of the conveyed product separation mechanism 10 (a diagram showing a vertical cross section taken along line AA in FIG. 2). Strictly speaking, the conveyed product separation mechanism 10 shown in FIG. 1 and the conveyed product separation mechanism 10 shown in FIGS. 2 and 3 are arranged in the manner of handling the introduction pipe 9, the structure of the support 7g, and the air supply pipe in the airflow injector structure 8. Although it has a different point in details, such as a connection part of 8a, it is the meaning which may employ | adopt about the said different point. Further, in the following description, the axis side of the transport body 41 when the transport object separating mechanism 10 is installed on the transport body 41 as shown in the figure is “radially inward”, and the opposite side to the axis is “radially outward. " However, in the transported object separation mechanism 10 itself, whether the inner side or the outer side in the radial direction is particularly meaningless and only a relative positional relationship is significant, and is merely an example of an absolute positional relationship. .

  In this embodiment, the conveyed product container 7 and the airflow injector structure 8 are held and fixed by a support 7g. The support 7g is fixed on the base 3 and is configured not to receive vibrations generated by the transport mechanisms 4 and 5 directly. Thereby, even if it does not raise the rigidity of the support tool 7g excessively, the conveyed product container 7 and the airflow injector structure 8 do not vibrate so as to cause a problem. However, if no problem occurs, the support 7g may be fixed on the base 3, or the transport container 7 and the airflow injector structure 8 may be directly attached to the transport body 41 or via another support member. Can be fixed. In the illustrated example, the support structure such as the support 7g is connected to an outlet pipe 8d described later. Note that the support 7g may be fixed on the installation base 1 in order to make it less susceptible to vibration from the transport mechanisms 4 and 5.

  The conveyed product container 7 is provided with a cylindrical container body 7a having a vertical axis, and a side opening at the tip of a projecting portion 71 projecting radially inward in the container body 7a. A mesh body 7b, an upper mesh body 7c that is provided in the upper opening of the container body 7a and has air permeability, a bottom mesh body 7d that is attached to the lower opening of the container body 7a and has air permeability, and a container body 7a. A discharge port 7e provided between the lower part and the bottom mesh body 7d, and a shielding plate 7f for preventing scattering of the conveyed product W configured to project around the container body 7a above the discharge port 7e. It has. Here, the bottom net 7d and the discharge port 7e constitute the bottom of the conveyed product container 7.

  In the airflow injector structure 8, the air supply path 8 b connected to the air supply pipe 8 a and the air flow path 8 c connected to the introduction pipe 9 are merged, and the outlet pipe 8 d is continuous before this junction. Provided. The lead-out pipe 8d extends radially inward and is connected and fixed to the container body 7a. As described above, in this embodiment, the conveyed product container 7 and the airflow injector structure 8 are integrally formed. In the illustrated example, the air supply pipe 8a is connected to the flow rate regulator 8f, and the outlet of the flow rate regulator 8f is connected to the air supply path 8b. The air supply path 8b is connected to a lead-out pipe 8d having a straight line extending straight and extending in the same direction as it is. The air passage 8c joins obliquely toward the outlet side with respect to the air supply passage 8b and the outlet pipe 8d. At least the inner surfaces of the air supply passage 8b and the outlet pipe 8c are preferably made of a soft material such as urethane rubber in order to reduce the impact received by the conveyed product W, and a fluororesin such as tetrafluoroethylene. It is desirable to be made of a material having a small surface friction such as.

  The lead-out pipe 8d extends in the horizontal direction and protrudes into the container main body 7a, and the tip of the lead-out pipe 8d serves as a lead-out port 8e for the vent pipe and opens into the container main body 7a. The outlet 8e faces the separation net 7b with a gap. Here, the protruding portion 71 of the container body 7a protrudes radially inward, but protrudes obliquely upward rather than in a direction (horizontal direction) perpendicular to the vertical line (the axis of the container body 7a). Further, the side opening at the tip of the projecting portion 71 is also opened obliquely upward toward the inside in the radial direction corresponding to the projecting direction, and the separation net 7b is accordingly viewed from the inside of the container body 7a. Sometimes it faces obliquely downward with respect to the protruding direction or horizontal direction of the outlet pipe 8d. The inclination angle θ with respect to the protruding direction or horizontal direction of the outlet pipe 8d obliquely downward of the separation network 7b is the speed at which the conveyed product W is led out from the outlet 8e, the impact resistance of the conveyed product W, the separation network 7b. It is set as appropriate according to the rebound angle distribution due to the rigidity of the object, the shape of the conveyed product W, and the like. In order to prevent the conveyed product W from colliding with the outlet pipe 8d after colliding with the separating net 7b and smoothly moving toward the lower outlet 7e, the inclination angle θ is in the range of 2 to 20 degrees. In particular, it is desirable to be within a range of 5 to 10 degrees.

  As will be described later, the separating net 7b has a mesh structure in which a large number of pores are formed in a flat metal plate made of stainless steel, aluminum, or the like. The inner surface of the separating net 7b is coated with a soft resin such as urethane rubber or another soft material. This coating layer is for mitigating the impact received by the conveyed product W at the time of collision and suppressing damage. The separating net 7 b is fixed to the protruding portion 71 by an annular fixing frame 72. As will be described later, when the separation network 7b is composed of the fibers 72 (see FIG. 5D), the impact of the conveyed product W is reduced by making the fibers 72 soft fibers in the same manner as described above. it can.

  The upper opening of the container body 7a is provided above the passage position of the outlet pipe 8d. The upper mesh body 7c is fixed to the upper opening by an annular fixing frame 73. The upper net 7c can also be configured in the same manner as the separation net 7b. The opening range of the upper net 7c is preferably as wide as possible. For example, if the opening range is limited to a range that does not reach the position directly above the outlet 8e as shown in the example in the radial direction, the upward scattering of the transported object W is reduced, but the airflow diffusing action is reduced. descend. On the other hand, by configuring the opening range to extend radially inward and beyond the position directly above the outlet 8e, the air diffusion effect is enhanced, but the conveyed product W is likely to be scattered upward. The above relationship also changes depending on the protruding amount of the outlet pipe 8d. When the protruding amount is changed, the distance between the outlet pipe 8e and the separation net 7b is changed, and the impact force when the conveyed product W collides with the separation net 7b can be adjusted. For this reason, it is desirable that the protruding amount can be adjusted by allowing the outlet tube 8d to move in and out of the container body 7a.

  The bottom net 7d is fixed to the lower opening of the container main body 7a in a posture that is inclined obliquely downward toward the outside in the radial direction. An opening edge on the radially outer side of the lower opening is formed in a notch shape to form the discharge port 7e. In other words, the discharge port 7e is open radially outward between the container body 7a and the lowermost portion (radially outer edge) of the bottom net 7d. The bottom mesh 7d can be configured in the same manner as the upper mesh 7c, but the inner surface thereof is not provided with the coating layer having a large friction coefficient so that the conveyed product W can smoothly slide down on the inner surface. It is desirable. Rather, it is preferable to form a low friction layer such as a coating layer made of tetrafluoroethylene or other fluororesin for reducing the friction coefficient on the inner surface of the bottom of the container body 7a provided with the bottom net 7d. In addition, the bottom net 7d is preferably made of a soft material or a thin plate in order to reduce the impact received by the conveyed product W when dropped.

  The inner surface of the bottom net 7d forms an inclined guide surface that goes downward from the inside in the radial direction toward the outside in the radial direction, and the discharge port 7e is formed at the tip of the bottom net body 7d toward the outside in the radial direction along the inclined guide surface. . For this reason, the conveyed product W slides down due to gravity while being guided by the inclined guide surface which is the inner surface of the bottom net 7d, and is finally discharged from the discharge port 7e. Here, the bottom net 7d has a function of guiding the conveyed product W toward the discharge port 7e as described above. However, if only this function is required, the container is not a net but has no pores. You may comprise by board | plate materials, such as a resin plate and a metal plate, which are integral with the main body 7a. However, in this embodiment, by providing the bottom net 7d at the bottom of the transport container 7 and suppressing the air flow toward the discharge port 7e and reducing the discharge speed of the transport object W, Prevents scattering.

  The inclination angle φ of the inclined guide surface constituted by the inner surface of the bottom net 7d is an angle necessary for the conveyed product W to slide smoothly, and the range in which the conveyed product W is not discharged at an excessive speed from the discharge port 7e. It is preferable to set to the angle. In the illustrated example, the inclination angle φ is preferably in the range of 20 to 45 degrees, and more preferably in the range of 25 to 35 degrees. Even when a net is not used at the bottom, the inclination angle of the inclined guide surface is the same as described above.

  Inside the container body 7a, a regulating plate 74 fixed to the outer peripheral wall in the radial direction is installed between the separating net 7b and the discharge port 7e. The regulating plate 74 is excessive even if the conveyed product W that has collided with the separating net 7b and dropped has not directly contacted the inner surface of the container body 7a, or has contacted the inner surface. In order not to be discharged from the discharge port 7e (while maintaining the speed), it has a function of temporarily receiving the transported object W that has dropped from above and guiding it toward the bottom of the bottom net 7d or the like. In addition, as long as it has the said function, you may comprise the control board 7e with a net | network with air permeability.

  A shielding plate 7f is provided around the container body 7a so as to protrude. In the case of the illustrated example, the shielding plate 7f has a shape in which a portion on the outer side in the radial direction of the container body 7a protrudes more widely, and the transported object W discharged from the discharge port 7e jumps out of the transport body 41. To prevent. A radially outer edge of the shielding plate 7 f is formed in an arc shape along the inner surface shape of the transport body 41. In the illustrated example, an annular support frame 75 is fixed to the outside of the peripheral wall of the container body 7 a, and the shielding plate 7 f is attached via the support frame 75. The support strength of the container body 7a can be increased by connecting the support frame 75 to the support 7g while maintaining the connection structure of the lead-out pipe 8d and the support 7g, or instead of the connection structure. Can do.

  In the present embodiment, the air flow injector structure 8, the introduction pipe 9, and the container body 7a are made of a transparent or translucent translucent material, so that the path of the transported object W from the introduction port 9a to the discharge port 7e. Are all visible from the outside. In particular, in the illustrated example, the conveyed product container 7, the injector structure 8, and the introduction pipe 9 are all made of a translucent material (preferably a transparent material), so that the conveyed product W inside the conveyed product separation mechanism 10 is extremely reduced. Easy to see. For this reason, problems such as clogging of the conveyed product W can be easily known or predicted in advance, so that a situation in which the conveyance speed decreases or the conveyance becomes impossible can be solved in a short time or can be avoided in advance.

  In the embodiment shown in FIGS. 2 and 3, a strip-shaped or linear conductive material 9d is spirally wound around the outer surface of the introduction tube 9, and the conductive material 9d is electrically connected at the connection point 9y of the support 7g. Is grounded (electrically grounded). Thereby, the static electricity induced by friction etc. can be relieved in the conveyed product W which passes through the inside of the introduction pipe 9 made of a dielectric. In the case where the conductive material 9d is not provided, if the blowing of the air flow by the air flow injector structure 8 is stopped while the conveyed product W is passing, the charged conveyed product W adheres to the inner surface of the introduction tube 9, but the conductive material 9d When the sheet is provided and electrically grounded, sticking of the conveyed product W hardly occurs.

  FIG. 4A shows a cross section in a state where the conductive material 9d is wound around the introduction tube 9, and FIG. 4B shows an enlarged cross section of the contact portion of the conductive material 9d. When the conductive material 9d is brought into contact with the outer surface of the introduction tube 9 and electrically grounded in this way, a ground is inserted between the introduction tube 9 and the surrounding air to produce a shielding effect. It is possible to prevent the surrounding air from being dielectrically polarized and generating electric charges at the interface between them. Therefore, even if the conveyed product W passing through the introduction tube 9 is charged, it is difficult to be adsorbed on the inner surface of the tube wall of the introduction tube 9.

  On the other hand, as shown in FIG. 4C, when the conductive material 9d is not in contact with the outer surface of the introduction tube 9, if the tube wall of the introduction tube 9 is charged due to friction with the conveyed product W, the tube wall And the surrounding air layer are dielectrically polarized, and electric charges having opposite polarities are generated at the interface between them. In this state, the charged state (charge) of the tube wall of the introduction tube 9 is maintained, so that the conveyed product W that passes through the inside of the introduction tube 9 is easily adsorbed on the inner surface of the tube wall of the introduction tube 9 that is charged with a reverse polarity. Become.

  Further, the bottom net 7d constituting the bottom of the transport container 7 is made of a conductive material, and the conductive material is exposed to the inside of the container as the inclined guide surface, and is connected via a conductive wire 7x. 7y is electrically grounded by being conductively connected to the support 7g. Thereby, the static electricity of the conveyed product W which moves on the inclination guide surface from the inside of the container main body 7a and is discharged | emitted from the discharge port 7e can be reduced efficiently. In this case, the bottom inner surface of the bottom mesh body 7d and the like has been charged before being introduced into the transported object separating mechanism 10 because the transported object W is located immediately before the discharge port 7e from which the transported object separating mechanism 10 is discharged. This is advantageous in that it can efficiently reduce static electricity newly charged inside the conveyed product separating mechanism 10 as well as electric charges. From the viewpoint of static electricity removal performance, if a conductive plate having no pores is installed at the bottom of the transport container 7 instead of the bottom net 7d and is electrically grounded, Further static elimination effects can be obtained by increasing the contact area and reducing the contact resistance.

  In addition, when each part of the conveyed product separation mechanism 10 is comprised with a translucent material as mentioned above, since each said part must be comprised with a dielectric material substantially, it moves on the inside of the inlet tube 9 on an airflow. During the movement process in the air duct such as the process of passing through the air flow injector structure 8, or the collision with the separation net 7b after being led out from the outlet 8e, the inner surface of the container body 7a or the regulating plate Since the transported object W is easily charged at the time of collision with 45 or the like, the effect of the static eliminating means by the ground structure as described above becomes extremely high. As a result of the inventor's confirmation, when the above earth structure is used together with the above ionizer, the charged amount (measurement voltage) of the discharged transported object W is reduced to about 10% when the earth structure and the ionizer are not used.

  FIG. 5 is a schematic plan view (a) of a net that can be used as the separating net 7b, the upper net 7c, and the bottom net 7d, and an enlarged part of the net. An enlarged plan view (b) and an enlarged sectional view (c) are shown. As shown in FIGS. 5B and 5C, this net is configured such that a large number of openings 71a (rectangular in the illustrated example) are arranged vertically and horizontally in a thin plate-like body 71. For example, a mesh-like etching mask is formed on the surface of a thin metal plate, and this is etched by an etching method so that a planar portion where no etching mask is formed becomes the opening 71a.

  The mesh body can be configured as shown in an enlarged plan view of FIG. 5D and an enlarged cross-sectional view of FIG. The net body is a net material composed of fibers 72 having a circular or oval cross section, and the fibers 72 are knitted in an appropriate manner. With such a mesh body, the air current can be smoothly passed along the cross-sectional shape of the fiber 72, and the rebound of the air current is reduced when passing through the mesh body, so that vortices are less likely to occur. It is possible to reduce the influence of the airflow on the conveyed product W.

  In any of the above-described nets, it is preferable that the aperture ratio of the net (ratio of the total area of the openings to the total area of the net) exceeds 50% (particularly 75%). In this case, the air flow is more easily removed from the mesh body than the net body. Therefore, in the separation network body 7b, the rebound of the air current caused by the net body makes it difficult for the conveyed product W to collide with the net body, or the air flow is rebounded. It is possible to prevent an excessive air flow or vortex from being generated inside the container 7. However, each opening part needs to have an opening width smaller than the dimension of each part of the conveyed product W in order to prevent the conveyed product W from passing through or being caught.

  Next, the operational effects of the present embodiment described above will be described below. In the present embodiment, as shown in FIG. 3, when an air flow is blown from the air supply pipe 8a of the air flow injector structure 8 into the air supply path 8b, the air flow passes through the inside of the outlet pipe 8d, and the conveyed product is accommodated from the outlet 8e. It is discharged into the vessel 7. At this time, since a negative pressure is generated in the air passage 8c, the conveyed product W can be sucked from the introduction port 9a at the tip of the introduction pipe 9. As shown in FIG. 1, the introduction port 9 a at the tip of the introduction tube 9 is installed on the conveyance path 43. At this time, the introduction port 9 a is fixed by a holder or the like (not shown) at a position opened on the conveyance path 43 in a state of being separated from the conveyance surface of the conveyance path 43 so as not to contact the conveyance body 41. The introduction port 9a is open to a first transport position 43a that is transported in a state in which a large number of transported objects W are overlapped or lined up in the transport path 43. For this reason, the conveyed product W is attracted | sucked in the introductory tube 9 in the 1st conveyance position 43a.

  In the present embodiment, when at least a part of the surface of the conveyed product W is sticky or the conveyed product W is easily stuck to each other due to static electricity, the conveyed product at the first conveying position 43a. W sticks to each other and combines to form a plurality of transported object W masses. For this reason, when the conveyed product W passes through the first conveyance position 43a and is conveyed on the conveyance path 43 as it is, a lump of the plurality of conveyed items W moves together, so that the width of the conveyance path 43 is increased. Since the lumps gradually or sequentially become narrower, the lumps remain on the transport path 43 or are removed from the transport path 43, so that the state in which the transported objects W are overlapped or lined up can be eliminated little by little. In the end, each lump is excluded from the transport path 43, so that only the transported object W remaining in a state where a gap where the transported object W does not exist is formed on the transport path 43 is transported. If it becomes like this, the conveyance efficiency (conveyance speed) of the conveying apparatus 100 will fall remarkably, and it may become about 1/10 of a design capability.

  In the present embodiment, in order to eliminate the above-described problems, all the transported objects W on the transport path 43 are sucked into the introduction pipe 9 at the first transport position 43a. In the configuration in which the conveyed product W is sucked into the ventilation pipe in this way, the conveyed product W is sucked from the periphery toward the introduction port 9a, so that the conveyed product is scattered as in the conventional configuration in which an airflow is blown out from the air outlet. The distance and the scattering direction do not vary and do not diffuse, and the influence on the transported object other than the transported object W to be sucked can be reduced. Further, the lump of the transported object W described above is transported by airflow through the ventilation pipe constituted by the pipe in the introduction pipe 9, the ventilation path 8 c and the pipe in the outlet pipe 9. Since the impact is received by the swinging or the collision to the inner surface of the pipe line or the collision of the conveyed items W, the conveyed items W constituting the lump are separated from each other. Therefore, since the separation process can be surely performed on all the conveyed objects taken into the ventilation pipe, the degree of the process does not vary and the unconveyed object W does not occur as in the prior art.

  The conveyed product W taken into the ventilation pipe as described above is led out from the outlet 8e into the conveyed product container 7 through the airflow injector structure 8. Even when the lump derived from the outlet 8e rides on the air current and collides with the separation net 7b, the impacts are also caused to separate the conveyed objects W. At this time, since the outlet 8e faces the separation network 7b, a part of the airflow discharged from the outlet 8e can pass through the separation network 7b having air permeability, so that the separation of the conveyed product W is performed. The collision with the network body 7b is less likely to be obstructed by the airflow bounced off by the separation network body 7b. Thereby, by adjusting the strength of the airflow supplied in the airflow injector structure 8, it is possible to more precisely control the magnitude of the impact received when the conveyed product W collides with the separation network 7b. Further, in the present embodiment, the separation net 7b is diagonally opposed (not directly facing) by the inclination angle θ with respect to the outlet 8e, so that it has collided with the separation net 7b. It is possible to prevent the object W from colliding again with the leading end of the outlet pipe 8d and receiving an excessive impact. In particular, since the separating net 7b is inclined obliquely downward on the side of the discharge port 7e, there is also an advantage that the conveyed product W colliding with the net can be efficiently discharged.

  The transported articles W separated from each other as described above descend while colliding with the inner surface of the container body 7a and the regulation plate 74 according to the fall angle, and finally fall on the bottom net 7d. At this time, the descending mode of the conveyed product W is greatly influenced by the air flow distribution inside the container main body 7a. However, in this embodiment, the upper net body 7c is provided on the upper portion of the container main body 7a so that the air flow is directed upward. Is released to the outside, the direction of the airflow is less likely to concentrate downward, and the descending speed of the conveyed product W can be suppressed. For the transported object W that has reached the bottom, the airflow is discharged to the outside through the bottom net 7d, so that the airflow toward the discharge port 7e is reduced and the discharge speed of the transported product W from the discharge port 7e is suppressed. Thus, the transported object W is prevented from being scattered when it goes outside. The discharge speed of the conveyed product W is basically controlled by the inclination angle φ of the inclined guide surface at the bottom. In addition to the separation mesh 7b, the upper mesh 7c and the bottom mesh 7d are further provided so that vortices are less likely to be generated in the conveyed product container 7, so that a part of the conveyed product W is discharged from the discharge port 7e. The problem that the probability of receiving damage increases by continuing to circulate in the container main body 7a without being prevented can also be prevented.

  As shown in FIG. 3, by arranging the discharge port 7 e so as to open on the transfer path 43 of the transfer body 41, the conveyed product W discharged from the discharge port 7 e smoothly moves on the transfer path 43. The discharge port 7e is installed at the second transport position 43b shown in FIGS. The second transport position 43b is on the downstream side of the first transport position 43a, but is preferably a portion having a width that allows at least a plurality of transported objects W to overlap or line up. This is because, when the conveyed product W is discharged from the discharge port 7e at a certain discharge speed, if it does not have the width as described above, it is more likely to scatter and come off from the transfer path 43. This is because of a decrease. As shown in FIG. 1, the conveyed product W is in a normal posture in which the longitudinal direction coincides with the conveying direction at the third conveying position 43c of the conveying path 43 on the downstream side (upward in the drawing) from the second conveying position 43b. When transported, the width of the second transport position 43b is preferably at least twice the width of the transported object W in the normal posture, but has a width greater than three times as in the illustrated example. It is even more desirable. In the illustrated example, the width of the transport path 43 at the second transport position 43b is equal to or larger than the longitudinal dimension of the transport object W, so that the transport object W may be removed from the transport path 43. Further reduction can be achieved.

  As for the inclination angle φ of the inclined guide surface, the friction coefficient, the amount of airflow discharged from the outlet 8e, the air permeability of the upper net 7c and the bottom net 7d, etc., the conveyed product W discharged from the outlet 7e is transported along the path. It is preferable to set appropriately so as not to deviate from the second transport position 43b on 43 or fall from the transport path 43. Further, the shielding plate 7f projects to the vicinity of the inclined inner surface of the transport body 41, so that the transported object W discharged from the discharge port 7e can be moved to the outside of the transport body 41 even if the transport object W greatly deviates from the second transport position 43b. It is installed so that it does not jump out, and in particular, it is installed in such a manner that it can return the transported object W that has been greatly deviated from the second transport position 43b to the second transport position 43b and its front and rear positions in the transport direction. It is preferable.

  As described above, in the present embodiment, the transport object W at the first transport position 43a on the transport path 43 is sucked by the introduction port 9a, and the transport object W is caused by the transport process by the air current and the impact caused by the collision with the net body. Are separated from each other and then returned to the second transport position 43b, so that when transported objects are sucked in, it is difficult to affect other transported objects, and all sucked transported objects W are equally separated. In addition, since the separation process can be performed sufficiently and efficiently, the separation process can be performed more reliably and uniformly than in the past. Therefore, even if the conveyed product W has high adhesiveness and high degree of charge, it is possible to sufficiently increase the conveyance efficiency, and it is possible to ensure a high conveyance speed that is often required in recent years. In particular, at least a part (preferably the bottom inner surface or the inclined guide surface) of the inner surface of the transport container 7 is made of a conductive material, and this is electrically grounded to suppress charging and adsorption of the transport object W. it can.

  Moreover, in this embodiment, since the introduction pipe 9 is connected to the upstream side of the airflow injector structure 8 and the introduction port 9a at the tip is opened on the conveyance path 43, a special portion such as a perforated portion is provided in the conveyance body 41. The structure of the transport body 41 is such that the transported object separating mechanism 10 can be easily equipped without using a simple structure, and the position of the inlet 9a can be easily adjusted and changed by using the flexible introduction pipe 9. It becomes difficult to receive restrictions and can easily cope with various aspects. In particular, by separating the introduction port 9a from the conveyance surface (bottom surface and side surface) of the conveyance path 43 and opening it on the conveyance path as a non-contact state, a stable suction state can be achieved regardless of the shape and structure of the conveyance body 41. Since it can be maintained, the position of the introduction port 9a can be set or changed, and the transported object separation mechanism 10 can be easily attached to the transport body 41 later. Further, by electrically contacting the outer surface of the introduction tube 9 with a conductive material and electrically grounding it, charging of the conveyed product W and adsorption to the inner surface of the tube wall can be suppressed.

  In addition, the conveyed product separation mechanism and conveying apparatus of this invention are not limited only to the above-mentioned illustration example, Of course, various changes can be added within the range which does not deviate from the summary of this invention. In the above embodiment, the introduction port 9a of the introduction pipe 9 is opened on the conveyance path 43 at the first conveyance position 43a, the conveyance object W on the first conveyance position 43a is sucked, and the downstream side is the first one. However, the present invention is not limited to such a mode. For example, it is configured so that the conveyed product W is directly sucked from the supply unit such as a hopper or the like (not shown) and the conveyed product reservoir 42 and discharged onto the conveying path 43, and instead, the conveyed product that is not subjected to separation processing is conveyed. In order to avoid being transported on the path 43, the supply unit, the transported object reservoir 42 and the transport path 43 may be divided. Further, the transport mechanism provided in the transport device is not limited to the one having the bowl-shaped vibrating body 41.

DESCRIPTION OF SYMBOLS 1 ... Installation stand, 2 ... Prevention mechanism, 3 ... Base, 4 ... 1st conveyance mechanism, 41 ... Conveyance body, 42 ... Conveyance thing storage part, 43 ... Conveyance path, 43a ... 1st conveyance position, 43b ... 2nd conveyance position, 43c ... 3rd conveyance position, 5 ... 2nd conveyance mechanism, 7 ... Conveyance container, 7a ... Container body, 7b ... Separation net, 7c ... Bottom net, 7d ... Bottom Net body, 7e ... discharge port, 7f ... shielding plate, 75 ... regulating plate, 8 ... air flow injector structure, 8a ... air supply pipe, 8b ... air supply path, 8c ... air passage, 8d ... outlet pipe, 8e ... outlet port, DESCRIPTION OF SYMBOLS 9 ... Introduction pipe, 9a ... Introduction port, 9d ... Conductive material, 10 ... Conveyed material separation mechanism, 100 ... Conveyance apparatus

Claims (11)

A vent line having an inlet and an outlet for a conveyed product;
With the container interior Oite the outlet is open towards the side, a side where the separation net body is installed with ventilation to the opposing externally at a distance to said outlet port, said conveyed object has and a bottom outlet is formed which is discharged, conveyed containers discharged from said discharge port the transported object derived from the outlet port temporarily accommodated,
An air flow generating means for causing an air flow from the inlet to the outlet to be generated in the air duct, so that the transported material is introduced from the inlet and led out from the outlet and then collides with the separation network. ,
Equipped with,
The bottom portion is provided with a bottom mesh body having air permeability to the outside, and the inner surface of the bottom mesh body forms an inclined guide surface directed downward toward the discharge port. mechanism.   The air flow generation means obtains a discharge power of the conveyed product from the outlet port by blowing an air flow from a midway position of the ventilation pipe line toward the outlet port, and generates a suction force of the conveyed item to the inlet port. The transported object separating mechanism according to claim 1, wherein the transported object separating mechanism has an airflow injector structure to be generated.   3. The conveyed product according to claim 2, further comprising an introduction pipe that constitutes a part of the ventilation duct on the upstream side of the airflow injector structure, wherein the introduction port is provided at a tip of the introduction pipe. Separation mechanism.   The transported object separating mechanism according to claim 3, wherein the introduction port opens on a transport path in a state of non-contact with a transport surface of the transported object.   2. The conveyed product according to claim 1, wherein at least a part of the vent pipe is made of a pipe material made of a dielectric, and an electrically grounded conductive material is in contact with an outer surface of the pipe material. Separation mechanism.   The transported material separating mechanism according to claim 5, wherein the conductive material is wound spirally along the pipe line direction on the outer surface of the tube material. A lead-out pipe having the lead-out opening opened at the tip of the vent pipe projectingly provided inside the container, and the separation net is directed obliquely downward in the container with respect to the projecting direction of the lead-out pipe The transported object separating mechanism according to claim 1 , wherein the transported object separating mechanism is installed as described above. Wherein said outlet the distal end of the vent line is out pipe comprising an opening is provided to project inside the container, according to claim 1, the amount of projection of the outlet pipe is characterized in that it is adjustable Transported material separation mechanism. 2. The transported object separation mechanism according to claim 1 , wherein the inclined guide surface is inclined downward from one side where the separation net is installed toward the discharge port on the opposite side . The transported article separating mechanism according to claim 1 , wherein an upper mesh body having air permeability to the outside is provided in an upper part of the transported container. A transport body having a transport path through which transported objects are transported;
A vent line provided with an inlet opening to the first conveying position of the conveying path and the outlet port;
A side portion in which the outlet opening is opened sideways inside the container, a separation net that is opposed to the outlet opening with a space therebetween and is air permeable to the outside, and the transported object. And a bottom portion formed with a discharge port that opens to a second transfer position downstream of the first transfer position, and temporarily stores the transported material led out from the lead-out port. A transport container for discharging from the discharge port;
An air flow generating means for causing an air flow from the inlet to the outlet to be generated in the air duct, so that the transported material is introduced from the inlet and led out from the outlet and then collides with the separation network. ,
Equipped with,
2. A transport apparatus according to claim 1, wherein a bottom mesh body having air permeability to the outside is provided at the bottom, and an inner surface of the bottom mesh body constitutes an inclined guide surface directed downward toward the discharge port .

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