JP4157339B2 - Separation supply / conveyance device for workpiece and separation supply / conveyance method for workpiece - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a workpiece separation supply / conveyance device and a workpiece separation supply / conveyance method for separating and supplying workpieces such as chip-like electronic components that have been aligned and conveyed by a linear feeder or the like one by one.
[0002]
[Prior art]
For example, an apparatus for separating and supplying workpieces for separating and conveying chip-shaped electronic components and the like is known from, for example, Japanese Patent Application Laid-Open No. 2001-58721. As shown in FIG. 4, the workpiece separation / conveyance apparatus is provided with an escape pin 21 on the downstream side of a linear feeder 20 that aligns and conveys a plurality of workpieces W. A stopper pin 22 is provided on the upstream side of the escape pin 21 and above the linear feeder 20 so as to come into contact with an upstream workpiece (hereinafter referred to as the next workpiece W12) following the leading workpiece W11 in the linear feeder 20. It has been. Further, an air discharge port 23 is inclined and provided on the upstream side of the leading work W11 in contact with the escape pin 21.
[0003]
Both the escape pin 21 and the stopper pin 22 are provided so as to be freely inserted into and removed from the linear feeder 20. The state in which the tip of the stopper pin 22 protrudes into the linear feeder 20 and the state in which it has been pulled in are referred to as lowering and raising of the stopper pin 22, respectively. When the escape pin 21 is raised and lowered, the workpiece W is conveyed by the linear feeder 20 when both the escape pin 21 and the stopper pin 22 are raised.
[0004]
Then, the leading work W11 comes into contact with the escape pin 21 and stops. In this state, the stopper pin 22 descends and comes into contact with the next workpiece W12, and then the escape pin 21 is lowered. When compressed air is ejected from the air discharge port 23 in this state, only the leading workpiece W11 is pumped downstream by the compressed air while the upstream workpiece W is pressed by the stopper pin 22 and stopped from the next workpiece W12. At the same time, the workpiece is transferred to the workpiece storage unit 24 of the workpiece transfer means 25 by suction in the direction of arrow a from the back of the workpiece storage unit 24. The work transport means 25 is constituted by a rotary table provided with a plurality of work storage portions 24 at equal intervals on the outer peripheral edge.
[0005]
Next, after stopping the compressed air from the air discharge port 23, when the escape pin 21 rises again and the stopper pin 22 also rises, the next workpiece W12 becomes the leading workpiece W11 and is conveyed to the escape pin 21, It comes into contact with the escape pin 21 and stops.
[0006]
By repeating the above operation, the workpieces W aligned and conveyed by the linear feeder 20 are separated one by one and sequentially supplied to the workpiece conveying means 25.
[0007]
[Problems to be solved by the invention]
However, the workpiece separating and feeding apparatus configured as described above is capable of controlling the operation timing of the escape pin 21, the stopper pin 22 and the air discharge port 23, the stop position of the rotary table as the workpiece conveying means 25, and the like. It is complicated.
[0008]
Further, the abrasion of the workpiece W may be caused by the abrasion of the stopper pin 22 and the workpiece W or the collision between the escape pin 21 and the workpiece W, and abnormal wear or fine cracks may occur in the workpiece W. There is a possibility that the smooth flow of the workpiece W may be hindered by dirt on the workpiece path of the linear feeder 20 due to powder or fine pieces. In addition, the escape pin 21 and the stopper pin 22 are taken in and out, the work movement time is delayed by compressed air, and the like.
[0009]
The present invention has been made paying attention to the above circumstances, and the object of the present invention is to separate and supply a workpiece with a simple structure and control, low vibration and low wear, and capable of supporting a high-speed workpiece conveyance. Another object is to provide a method for separating and conveying workpieces.
[0010]
In order to achieve the above object, according to the present invention, the first aspect of the present invention provides a work aligning / conveying means for aligning and conveying a rectangular parallelepiped work, and the aligned and conveyed work is individually separated and supplied to the next means. a work of separating the supply means, the separation feeding and conveying device of a work consisting of a conveying means of the work for transporting the supplied workpiece, conveying means before Symbol work, a disc-shaped, a plurality of work holding the outer peripheral portion The workpiece separation and supply unit is configured to change the posture and the conveyance direction of the workpiece obliquely with respect to the moving direction of the workpiece alignment and conveyance unit, and to the workpiece holding unit the workpiece And a workpiece direction changing supply mechanism for stopping the progress of the subsequent workpiece by the workpiece supplied to the workpiece holding means closing the discharge portion of the workpiece aligning and conveying means. Characterized in that it has.
[0011]
Claim 2, direction changing mechanism for supplying the workpiece according to claim 1, said conveying means by applying a pressure by pressurizing means to the beginning of the work that has been conveyed by changing the position and the conveying direction of the workpiece It is characterized by supplying.
[0012]
A third aspect of the present invention is characterized in that the pressurizing means of the second aspect is air injection.
[0013]
According to a fourth aspect of the present invention, the workpiece direction change supply mechanism according to the second aspect is provided with a workpiece presence / absence sensor for detecting the presence / absence of a workpiece.
[0014]
A fifth aspect of the present invention is characterized in that the work holding means of the first aspect is a V-shaped notch that engages with a part of the work .
[0015]
According to a sixth aspect of the present invention, the cutout portion constituting the workpiece holding means of the fifth aspect is an unequal side V-shape with a short front side and a long rear side with respect to the rotation direction of the transfer table. And
[0016]
A seventh aspect of the present invention is characterized in that the work holding means according to the fifth or sixth aspect has a vacuum suction hole at an intersection of two sides of the V-shaped notch .
[0017]
According to an eighth aspect of the present invention, there is provided an aligning / conveying means for aligning and conveying a rectangular parallelepiped work, a separating / feeding means for separating and supplying the aligned and individually conveyed work to the next means, and the supplied work in the separation feeding and conveying device of a work consisting of a conveying means of the work to convey a conveying means before Symbol work, a disc-shaped, a conveying table having a plurality of workpiece holding means on the outer peripheral portion, of the work The separation supply unit changes the posture and the conveyance direction of the workpiece obliquely with respect to the traveling direction of the alignment conveyance unit of the workpiece, supplies the workpiece to the workpiece holding unit and holds the workpiece, and the workpiece holding unit supplied workpiece has a direction changing mechanism for supplying a work to stop the progression of the workpiece to be followed by closing the discharge portion of the alignment conveyor means of said workpiece, said workpiece holding means, said ring Engages a portion of the click, short previous sides with respect to the rotation direction of the conveying table, after the side is long, characterized in that it has a cut-out portion of the scalene V-shaped.
[0018]
According to a ninth aspect of the present invention, there is provided an aligning / conveying step for aligning and conveying the rectangular parallelepiped workpieces, a separating / feeding step for supplying the separated and individually separated workpieces to the next step, and a supplied workpiece In the workpiece separation and supply method, the workpiece separation and supply step is configured such that the posture and the conveyance direction of the workpiece are inclined with respect to the advancing direction of the workpiece alignment and conveyance step. It characterized that you have provided a more redirection supply engineering work to stop the progression of the workpiece to be followed by closing the discharge portion of the alignment transfer step by the work supplied to the conveying step.
[0019]
According to a tenth aspect of the present invention, in the workpiece supply from the workpiece direction change supplying step to the workpiece conveying step according to the ninth aspect, the workpiece is detected by a workpiece presence sensor, and then the conveying step is moved by one pitch. The workpiece is supplied to the transporting step by the direction changing step of the workpiece by detecting the absence of the workpiece by the presence sensor.
[0020]
According to an eleventh aspect of the present invention, in the workpiece direction changing and supplying step according to the ninth aspect, the head workpiece is pressurized to change the posture and the conveying direction.
[0021]
According to a twelfth aspect of the present invention, the work supplied to the transporting process according to the ninth aspect is inclined with respect to the traveling direction of the aligning and transporting process of the work, and blocks the discharge part of the aligning and transporting process to advance the subsequent work. It is characterized by stopping.
[0022]
According to the above configuration, when the work is aligned and transported by the aligning and transporting means and proceeds to the work separating and supplying means having the work direction changing and supplying mechanism, the side surface of the work is pressurized by the direction changing and supplying mechanism. Therefore, the advancing direction of the work is changed to the direction of the conveying means. And the workpiece | work which approached the notch part as a workpiece | work holding means of a conveyance means is attracted | sucked, and it adsorb | sucks to a notch part. At this time, the work attracted to the notch is inclined with respect to the traveling direction of the aligning and conveying means, so that the subsequent work can be stopped.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0024]
1 to 3 show a first embodiment, FIG. 1 is a plan view of a workpiece separating and feeding apparatus, FIG. 2 is an enlarged plan view of part A in FIG. 1, and FIG. It is a perspective view of a sensor.
[0025]
As shown in FIG. 1, for example, a workpiece W such as a chip-shaped electronic component has a rectangular planar shape, and a transfer table 1 that is a workpiece transfer means for transferring the workpiece W has a disk shape and the outside thereof. A plurality of notches 2 serving as work holding means are provided at equal intervals on the peripheral edge. The transfer table 1 is intermittently rotated in the direction of the arrow about the rotation center 1a.
[0026]
A transfer unit 3, a treatment unit 4 that performs inspection or measurement, and a processing unit 5 that discharges or classifies to the next process are arranged on the outer periphery of the transport table 1 at intervals in the rotation direction of the transport table 1. Yes.
[0027]
As shown in FIG. 2, the notch 2 is V-shaped so as to engage with a part of the workpiece W, the two sides form a right angle, and the front in the rotation direction of the transfer table 1 is the short side 2 a, The rear side is the long side 2b. Furthermore, a vacuum suction hole 6 is provided at the intersection of the short side 2a and the long side 2b of the notch 2, and communicates with a vacuum generation source (not shown).
[0028]
The transfer unit 3 is provided with a linear feeder 7 as an aligning / conveying means for aligning and continuously conveying the workpieces W in a direction substantially tangential to the conveying table 1. The linear feeder 7 is provided with a conveyance groove 9 for conveying the workpieces W in one row over the longitudinal direction of the feeder main body 8 made of a strip-shaped plate. Further, a notch transfer portion 10 is provided at the end portion of the feeder body 8 so as to be cut in an arc shape along the outer peripheral surface of the transfer table 1 and transfer the workpiece W to the notch portion 2 of the transfer table 1.
[0029]
An air ejection nozzle 11 as a pressurizing unit constituting a workpiece direction changing supply mechanism is disposed at the terminal end of the feeder body 8. The air ejection nozzle 11 pressurizes the side surface of the workpiece W that has traveled to the notch transfer portion 10 with air, changes the traveling direction of the workpiece W, and supplies it separately to the notch portion 2 of the transfer table 1. Yes.
[0030]
Further, as shown in FIG. 3, the transfer unit 3 has a light receiver 12a facing above the intersection of the short side 2a and the long side 2b of the notch 2 of the transport table 1, and a light projector 12b facing each other below. A workpiece presence / absence sensor 12 that detects the presence / absence of the workpiece W in the notch 2 is provided.
[0031]
Next, the operation of the workpiece separation / conveyance apparatus configured as described above will be described.
[0032]
The transfer table 1 is intermittently rotated in the direction of the arrow, and is temporarily stopped when the cutout portion 2 is positioned on the transfer portion 3. The workpieces W are aligned and conveyed in one row by the conveying grooves 9 of the linear feeder 7, and the side of the workpiece W that has advanced to the notch transfer unit 10 is pressurized by the air ejected from the air ejection nozzle 11. Accordingly, the traveling direction of the workpiece W is changed to the direction of the cutout portion 2 of the transfer table 1. Then, the workpiece W approaching the notch 2 is sucked by the vacuum suction hole 6 and is attracted to the notch 2 with reference to the surfaces of the short side 2a and the long side 2b of the notch 2.
[0033]
At this time, the workpiece W attracted to the cutout portion 2 is inclined with respect to the traveling direction of the linear feeder 7 and closes the cutout transfer portion 10, so that the progress of the subsequent workpiece W can be stopped. Therefore, it is not necessary to separately provide stopper means for stopping the progress of the subsequent workpiece W.
[0034]
The workpiece W adsorbed to the notch 2 is detected by the workpiece presence / absence sensor 12, and when it is confirmed that the workpiece W is adsorbed to the conveyance table 1, the conveyance table 1 is fed and conveyed by the linear feeder 7 by one pitch in the arrow direction. It rotates at a speed faster than the speed. Therefore, the notch 2 where the work W of the transfer table 1 is not attracted moves to the transfer unit 3 and stops. At this time, since the workpiece W that has blocked the notch transfer portion 10 of the linear feeder 7 moves as the conveyance table 1 rotates, the workpiece W stopped by the workpiece W advances and is conveyed in the same manner as described above. It is attracted to the notch 2 of the table 1. This series of operations is repeated.
[0035]
When the workpiece W attracted to the notch 2 by the intermittent rotation of the transfer table 1 reaches the treatment section 4, the workpiece W is inspected or measured. When the workpiece W reaches the processing unit 5 from the treatment unit 4 due to the intermittent rotation of the transfer table 1, the workpiece W is discharged or classified to the next step, and the notch 2 returns to the transfer unit 3 due to the intermittent rotation of the transfer table 1.
[0036]
In the above-described embodiment, the conveyance table 1 is intermittently rotated so that the cutout portion 2 stops at 1 o'clock when the cutout portion 2 faces the transfer portion 3. However, even if the conveyance table 1 is continuously rotated, the cutout portion 2 is stopped. Can be separated and supplied even if the direction of the workpiece W is instantaneously changed in the direction of the cutout portion 2 by air from the air ejection nozzle 11 when facing the transfer portion 3.
[0037]
The workpiece W is a chip of an electronic component, and the planar shape thereof is described as a rectangle. However, the workpiece W is not limited to the electronic component, and may be a mechanical component such as a resin or a metal and the planar shape thereof may be a square.
[0038]
【The invention's effect】
As described above, according to the present invention, the aligned and conveyed workpieces can be separated one by one and supplied to the conveying means to be conveyed. At this time, the stopper pins for separating the workpieces can be taken in and out. Operation and operations related to air injection are not required, and the configuration and control can be simplified. In addition, there is an effect that it is possible to cope with a high-speed workpiece conveyance with low vibration and low wear.
[Brief description of the drawings]
FIG. 1 is a plan view of a work separating and feeding apparatus according to a first embodiment of the present invention.
FIG. 2 is an enlarged plan view showing a portion A of FIG. 1 according to the embodiment;
FIG. 3 is a perspective view of a workpiece transfer table and a workpiece presence / absence sensor according to the embodiment.
FIG. 4 is a schematic side view of a conventional workpiece supply / separation device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Conveyance table 2 ... Notch part 7 ... Linear feeder 11 ... Air ejection nozzle 12 ... Work presence sensor W ... Work

Claims (11)

Alignment / conveying means for workpieces that align and convey rectangular parallelepiped workpieces, separation / feeding means for workpieces that are separated and fed to the next means, and a workpiece that conveys the supplied workpieces In a workpiece separating and feeding apparatus comprising a conveying means ,
Conveying means before Symbol work, a disc-shaped, a conveying table provided with a plurality of workpiece holding means on the outer circumferential portion,
The workpiece separation and supply means changes the posture and transport direction of the workpiece obliquely with respect to the traveling direction of the work alignment and transport means, supplies the work to the work holding means, holds the work, and An apparatus for separating and supplying a workpiece, comprising: a workpiece direction changing supply mechanism for stopping a progress of a subsequent workpiece by closing a discharge portion of the workpiece alignment and conveying unit.   The said direction change supply mechanism of a workpiece | work applies a pressurizing force to the head workpiece | work conveyed by the pressurization means, changes the attitude | position and conveyance direction of the said workpiece | work, and supplies it to the said conveyance means. 1. A workpiece separation and supply apparatus according to item 1.   The apparatus for separating and supplying workpieces according to claim 2, wherein the pressurizing means is air injection.   The workpiece separation / conveyance apparatus according to claim 2, wherein a workpiece presence / absence sensor configured to detect the presence / absence of a workpiece is provided in the workpiece direction change supply mechanism.   2. The work separating and feeding apparatus according to claim 1, wherein the work holding means is a V-shaped notch that engages with a part of the work.   6. The workpiece according to claim 5, wherein the notch portion constituting the workpiece holding means is a V-shaped unequal side having a short front side and a long rear side with respect to the rotation direction of the transfer table. Separation supply transport device.   7. The work separating and feeding apparatus according to claim 5, wherein the work holding means has a vacuum suction hole at an intersection of two sides of the V-shaped notch. Alignment / conveying means for workpieces that align and convey rectangular parallelepiped workpieces, separation / feeding means for workpieces that are separated and fed to the next means, and a workpiece that conveys the supplied workpieces In a workpiece separating and feeding apparatus comprising a conveying means ,
Conveying means before Symbol work, a disc-shaped, a conveying table provided with a plurality of workpiece holding means on the outer circumferential portion,
The workpiece separation and supply means changes the posture and transport direction of the workpiece obliquely with respect to the traveling direction of the work alignment and transport means, supplies the work to the work holding means, holds the work, and The workpiece supplied to the workpiece holding means has a workpiece direction change supply mechanism that blocks the discharge portion of the workpiece alignment conveyance means and stops the subsequent workpiece,
The work holding means has a V-shaped notch with an unequal side that engages with a part of the work and has a short front side and a long rear side with respect to the rotation direction of the transfer table. Separating and feeding device for workpieces. Alignment and conveyance process of workpieces that align and convey rectangular parallelepiped workpieces, separation and supply process of workpieces that are separated and fed to the next process, and workpieces that convey the supplied workpieces In a method for separating and conveying workpieces comprising a conveying step,
Separating step of supplying the work, the posture and the conveying direction of the workpiece, the then obliquely with respect to the traveling direction of the alignment conveyance process of the work, the discharge portion of the alignment transfer step by supplied workpiece to said transport step the method of separating feed conveying workpieces, characterized in that you are provided with more redirection supply engineering work to stop the progression of the work that followed blocking.   The workpiece supply from the workpiece direction changing supply step to the workpiece conveying step is performed by detecting the workpiece by the workpiece presence / absence sensor, moving the conveyance step by one pitch, and detecting the absence of the workpiece by the workpiece presence / absence sensor. The method for separating and supplying a workpiece according to claim 9, wherein the workpiece is supplied to the conveying step by a workpiece direction changing step.   10. The workpiece separating and feeding method according to claim 9, wherein the workpiece direction changing and feeding step changes the posture and the feeding direction by pressurizing the leading workpiece.

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