JP4011866B2 - Electronic component separation / conveyance apparatus and separation / conveyance method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electronic component separating / conveying apparatus and separation / conveying method for separating a plurality of electronic components arranged in a width direction and a longitudinal direction of a lead frame by punching and separating the electronic components from the lead frame. About.
[0002]
[Prior art]
2. Description of the Related Art Separation / conveying devices are known in which a large number of electronic components are connected to a lead frame in an aligned state, the electronic components are punched and separated from the lead frame, and the electronic components are conveyed to a mounting process or the like.
[0003]
4 shows the electronic components 2 connected to the lead frame 1 in one vertical row, and FIG. 5 shows the electronic components 2 connected to the lead frame 1 in three vertical rows for efficiency.
[0004]
By the way, with the recent integration due to the downsizing of electronic components, as shown in FIG. 6, there is an appearance in which the electronic components 2 are arranged with high density in the longitudinal direction and the width direction of the lead frame 1. It is required to separate the electronic component 2 from the frame 1 and to process the separated electronic component 2 at a high speed, for example, to a storage unit such as a taping device.
[0005]
[Problems to be solved by the invention]
However, as the arrangement of the electronic components 2 with respect to the lead frame 1 is increased in density, a large force is required for punching for separating the electronic components 2 from the lead frame 1. Accordingly, the apparatus itself needs to have rigidity capable of withstanding the punching force, the weight of the apparatus itself increases, the transport speed of the electronic component 2 to the separation part after the punching process and punching is slow, and the transport from the separation part to the taping device, etc. Since the conveyance speed to perform is high-speed, there exists a problem that it cannot respond to that speed.
[0006]
The present invention has been made paying attention to the above circumstances, and the object of the present invention is to simultaneously manufacture a plurality of individual electronic components separated by punching out electronic components from a lead frame in which electronic components are densely integrated. An object of the present invention is to provide an electronic component separation / conveyance device and a separation / conveyance method that can be efficiently transported by conveying to a separation / conveyance unit, increasing the conveyance speed to the separation / conveyance unit.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, according to a first aspect of the present invention, a plurality of electronic components arranged in a width direction and a longitudinal direction of a lead frame are punched for each row in the width direction of the lead frame . A punching portion to be an electronic component row, a transport table for rotating and transporting the electronic component row punched by the punching portion, and separating the electronic component row transported by the transport table into individual electronic components, In a separation / conveyance device comprising a separation / conveyance unit having separation / conveyance means for transferring to a process, the conveyance table is provided with a plurality of conveyance mechanisms for placing the electronic component rows punched by the punching unit , The electronic component row placed on the transport mechanism is transported from the punching unit to the separation / conveyance unit as the transport table rotates .
[0008]
According to a second aspect of the present invention, the separation / conveyance unit according to the first aspect is separated from the electronic component row placed on the conveyance mechanism and separates and conveys individual electronic components, and the conveyance mechanism includes And a component moving mechanism that moves the electronic component row in the longitudinal direction thereof and sequentially positions and supplies the individual electronic components to the separating / conveying means .
[0009]
According to a third aspect of the present invention, the component moving mechanism according to the second aspect includes a driving unit that is provided in the transport mechanism and moves in a longitudinal direction of the electronic component row, and each of the electronic component rows mounted on the transport mechanism. and sequentially positioning to said Rukoto to the electronic component the separating and conveying means.
[0010]
According to a fourth aspect of the present invention, the conveyance mechanism according to any one of the first to third aspects includes a slide portion that linearly moves in a tangential direction of the conveyance table, and the electronic component row is arranged in the linear movement direction of the slide portion. It is characterized by being placed.
[0011]
According to a fifth aspect of the present invention, the driving means of the component moving mechanism according to the third or fourth aspect is a cam mechanism, and the slide portion is moved at a pitch of the electronic component by the rotation of the cam mechanism.
[0012]
A sixth aspect is characterized in that the slide portion according to the fourth or fifth aspect is urged by an elastic member toward the cam mechanism.
[0013]
A seventh aspect of the present invention is characterized in that the slide portion according to any one of the fourth to sixth aspects is restrained by a pressing unit when the transport table is stopped.
[0014]
According to an eighth aspect of the present invention, the separation / conveying means according to the first or second aspect includes a transfer head provided at one or more fixed positions on the electronic component row mounted on the transport mechanism and capable of transporting the electronic components. It is characterized by.
[0015]
A ninth aspect is characterized in that the cam body of the cam mechanism according to the fifth or sixth aspect is provided with a notch.
[0016]
According to a tenth aspect of the present invention, there is provided a first step of placing a row of electronic components punched for each row in the width direction of the lead frame on a plurality of transport mechanisms provided on the transport table and transporting the separation to the separation unit. The separation / conveyance unit moves the electronic component row in the longitudinal direction by a component movement mechanism, positions the individual electronic components on the separation / conveyance unit, and separates / conveys the individual electronic components. An electronic component separation / conveyance method comprising the steps of:
[0017]
According to the above configuration, the electronic components are densely arranged on the lead frame, punched for each row in the width direction of the lead frame, and transported as electronic component rows to the separation / conveyance unit by the transport mechanism, thereby transporting the electronic components. The speed can be increased to correspond to the speed of the separating / conveying means for transferring from the separating / conveying section to the next process.
[0018]
Further, the individual electronic components in the electronic component row can be sequentially positioned and supplied to the fixed positions of the separating / conveying means by the component moving mechanism, so that the delivery speed can be increased.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0020]
1 to 3 show a first embodiment, FIG. 1 is a front view of a component moving mechanism including a conveying mechanism, FIG. 2 is a side view of the same, and FIG. 3 is a plan view of a separation / conveying device.
[0021]
First, a schematic configuration of the separation / conveyance device 3 will be described with reference to FIG. The separating / conveying device 3 includes a disc-shaped conveying table 4, which is fixed to a rotating shaft 6 of a rotary drive mechanism 5 such as a motor, and intermittently rotates in a direction indicated by an arrow within a horizontal plane. ing. For example, four transport mechanisms 7 are provided on the outer peripheral edge portion of the transport table 4 at intervals of 90 °, and a plurality of electronic components that are punched from the lead frame 1 and separated individually on the outer peripheral portion of the transport table 4. A punching unit 9 and a separation / conveying unit 10 are provided as an electronic component row 8 composed of two.
[0022]
The punching unit 9 and the separation / conveying unit 10 are arranged symmetrically with the rotation center of the conveying table 4 in between. The electronic component row 8 punched from the lead frame 1 by the punching unit 9 is placed on the transport mechanism 7 and transported to the separation / transport unit 10 by the rotation of the transport table 4.
[0023]
Next, the transport mechanism 7 and the separation / transport unit 10 will be described in detail with reference to FIGS. That is, the substrate 11 is fixed to the outer peripheral edge of the transfer table 4. A slide bearing 12 which is a slide means is provided on the lower surface of the substrate 11 and constitutes a component moving mechanism 30.
[0024]
The slide bearing 12 includes a slide base 13 fixed to the substrate 11 and a slider 14 that is slidable with respect to the slide base 13 and slidable in a tangential direction of rotation of the transport table 4. Further, a bracket 15 is fixed to the side of the substrate 11 on the rotation direction side of the transport table 4 so as to be orthogonal to the sliding direction of the slider 14.
[0025]
A slide table 16 is fixed to the slider 14 of the slide bearing 12, and the slide table 16 is provided so as to be slidable with respect to the substrate 11. A cradle 18 is provided on the upper surface of the slide table 16 via a cradle support portion 17. Is provided. An upper part of the cradle 18 has a long mounting surface 18a along the sliding direction of the slide table 16, and is an electronic component row made up of a plurality of electronic components 2 punched from the lead frame 1 and separated individually. 8 is placed.
[0026]
Further, two connecting shafts 19 projecting downward are provided on the lower surface of the slide table 16, and a cam follower 21 is provided on the lower end portion of the connecting shaft 19 via an attachment member 20.
[0027]
Further, a slide face plate 22 facing the bracket 15 is fixed to one end side of the slide table 16 in the sliding direction and on the opposite side of the conveying table 4 in the direction of rotation. A shaft hole 22a is formed in a part of the slide face plate 22, and a screw hole 23 is formed in the bracket 15 opposed to the shaft hole 22a. A stopper shaft 24 having a screw portion 24a at the distal end portion and a stopper portion 24b at the proximal end portion is inserted into the shaft hole 22a from the outside of the slide face plate 22. The screw portion 24 a of the stopper shaft 24 is screwed and fixed to the screw hole 23 a of the bracket 15.
[0028]
An elastic member 25 made of a coil spring is interposed between the bracket 15 and the slide face plate 22 while being fitted to the stopper shaft 24. The distance between the bracket 15 and the slide face plate 22 is regulated by the elastic member 25, and the pedestal 18 on the slide table 16 is mounted on the cradle 18 with respect to the transfer head 27 of the separating / conveying means 26. It is set so as to return to the reference position in the transfer with the column 8.
[0029]
A cylinder 28 is fixed to the bracket 15 as a pressing means for pressing the slide face plate 22. The cylinder 28 is provided with a vibration-isolating rod 29 directly connected to a piston (not shown) so as to be stretchable. The vibration isolating rod 29 can press the slide face plate 22 against the stopper portion 24b of the stopper shaft 24 when extended to prevent vibration of the conveying mechanism 7 of the component moving mechanism 30 accompanying rotation / stop of the conveying table 4. It has become.
[0030]
A cam mechanism 31, which is a driving unit for the component moving mechanism 30, is provided below the transport table 4 separately from the transport table 4. One cam mechanism 31 is provided corresponding to each of the plurality of transport mechanisms 7. The cam mechanism 31 has a cam body 34 mounted on a rotation shaft 33 of a motor 32 that can rotate intermittently.
[0031]
The cam body 34 has a notched portion 34a in which a part of the cylindrical body is cut out and a rolling surface 34b whose height gradually increases in the circumferential direction, and the rolling surface 34b rolls with the cam follower 21. Yes. The rotating shaft 33 of the cam body 34 is provided in parallel to the tangential direction of the transport table 4, that is, the moving direction of the slide table 16.
[0032]
Next, a method for separating and transporting an electronic component by the electronic component separating and transporting apparatus configured as described above will be described.
[0033]
An electronic component row 8 in which a plurality of electronic components 2 in one row in the width direction of the lead frame 1 are punched by the punching portion 9 is placed on a cradle 18 of the transport mechanism 7. In this state, when the transport table 4 rotates 90 ° in the direction of the arrow, the electronic component row 8 placed on the transport mechanism 7 stops at the reference position of the separation / transport unit 10.
[0034]
After the transport mechanism 7 stops at the reference position, when the motor 32 of the cam mechanism 31 is driven and the cam body 34 rotates, the rolling surface 34b of the cam body 34 comes into contact with the cam follower 21 and rolls. When a portion where the rolling surface 34 b of the cam body 34 is high contacts the cam follower 21, the connecting shaft 19 is pressed via the cam follower 21.
[0035]
Therefore, the slide table 16 slides through the connecting shaft 19, and the slide face plate 22 that is positioned in contact with the stopper portion 24 b of the stopper shaft 24 moves away from the stopper portion 24 b against the urging force of the elastic member 25. The cradle support 17 and the cradle 18 slide.
[0036]
The outer peripheral portion of the cam body 34 of the cam mechanism 31 is divided into a plurality of equal parts and rotated intermittently by one division, and the amount by which the cradle 18 slides is placed on the cradle 18. This corresponds to one of the electronic components 2 in the electronic component row 8. Accordingly, the slide table 16 is moved one pitch at a time by the intermittent rotation of the cam body 34, and the electronic component 2 placed on the cradle 18 is positioned at the delivery position of the transfer head 27 of the dividing / conveying means 26. Is adsorbed by the transfer head 27 and conveyed to the next step.
[0037]
Therefore, the divided number of the divided parts of the cam mechanism 31 is the same as the number of parts delivered, and when the delivery of all the electronic parts 2 placed on the cradle 18 is completed, the cam follower 21 is pressed. The notch 34a of the cam mechanism 31 releases the press of the cam follower 21, the sliding face plate 22 is pushed back to the stopper 24b by the urging force of the elastic member 25, and the cradle 18 is the reference position which is the first electronic component 2 delivery position. Is positioned.
[0038]
In this embodiment, the number of electronic components 2 placed on the cradle 18 is eight, and two suction nozzles are provided as the transfer head 27 of the separating / conveying means 26 so that two electronic components 2 are conveyed at a time. Therefore, all the electronic components 2 are conveyed by four times of delivery.
[0039]
Accordingly, the cam body 34 of the cam mechanism 31 is divided into four equal parts, and intermittently rotated by 90 ° to slide and position the cradle 18. The notch 34a provided in the cam body 34 serves to release the cam follower 21 from the cam body 34 and to rotate the transport mechanism 7 by the transport table 4 when the positioning of the cradle 18 is completed and returned to the reference position. In addition, the cam follower 21 and the cam body 34 have a role of preventing interference.
[0040]
In addition, when the transport mechanism 7 is transported from the punching unit 9 by the transport table 4 and stops positioning to the separation / transport unit 10, the slide face plate 22 is urged by the elastic member 25 to the stopper portion 24 b. The conveyance mechanism 7 of the component moving mechanism 30 vibrates against the urging force of the elastic member 25 when the indexing of the conveyance table 4 for elasticity due to the rotational force is stopped.
[0041]
However, the vibration isolating rod 29 is protruded by the cylinder 28 to press the slide face plate 22 and press the slide face plate 22 against the stopper portion 24b, so that the vibration of the transport mechanism 7 of the component moving mechanism 30 accompanying the rotation / stop of the transport table 4 is achieved. Can be prevented.
[0042]
In addition, after the rotation of the conveyance table 4 is stopped, the pressing force of the anti-vibration rod 29 against the slide face plate 22 is released, and then the component moving mechanism is driven by the cam mechanism 31.
[0043]
In the above-described embodiment, the electronic component row in which eight electronic components are arranged in the width direction of the lead frame has been described. However, this is only an example and is not limited to the number and shape of electronic components. Absent.
[0044]
Further, the number of transport mechanisms provided on the transport table and the number of transfer heads of the separation / transport means are not limited and can be appropriately changed.
[0045]
【The invention's effect】
As described above, according to the first aspect, the electronic components arranged in a high density on the lead frame are punched for each row in the width direction of the lead frame, and are conveyed to the separation / conveyance unit by the conveyance mechanism as the electronic component row. Thus, the conveyance speed of the electronic component can be increased, and the speed can be made to correspond to the speed of the separation / conveyance means for transferring from the separation / conveyance section to the next process.
[0046]
According to the second to fourth aspects, the individual electronic components of the electronic component row can be sequentially positioned and supplied to the fixed positions of the separating / conveying means by the component moving mechanism, and the delivery speed can be increased.
[0047]
According to the fifth , sixth , and ninth aspects , the slide portion of the component moving mechanism can be accurately moved according to the pitch of the electronic component by the rotation of the cam mechanism.
[0048]
According to the seventh aspect, since the slide portion is restrained by the pressing means when the conveyance table is stopped, the vibration of the conveyance mechanism of the component moving mechanism can be prevented.
[0049]
According to the eighth aspect, since one or more separation / conveyance means are provided at fixed positions on the electronic component row placed on the conveyance mechanism, the electronic components can be conveyed to the next process at high speed by the transfer head. .
[0050]
According to the tenth aspect of the present invention , the electronic components arranged in a high density on the lead frame are punched for each row in the width direction of the lead frame, and are conveyed to the separation / conveyance unit by the conveyance mechanism as the electronic component row. It is possible to increase the conveyance speed and correspond to the speed of the separation / conveying means for transferring from the separation / conveyance unit to the next process.
[Brief description of the drawings]
FIG. 1 is a front view of a component moving mechanism including a conveying mechanism in a first embodiment of the present invention.
FIG. 2 is a side view of a component moving mechanism including a transport mechanism according to the embodiment.
FIG. 3 is a plan view of the separation / conveyance device of the embodiment.
FIG. 4 is a plan view of a lead frame in which electronic components are connected in a vertical row.
FIG. 5 is a plan view of a lead frame in which electronic components are connected in three vertical rows.
FIG. 6 is a plan view of a lead frame in which electronic components are arranged at high density in both the longitudinal direction and the width direction.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Lead frame 2 ... Electronic component 3 ... Separation / conveyance apparatus 4 ... Conveyance table 7 ... Conveyance mechanism 8 ... Electronic component row | line | column 9 ... Punching part 10 ... Separation / conveyance part 26 ... Separation / conveyance means 30 ... Component movement mechanism

Claims (10)

A plurality of electronic components arranged in the width direction and the longitudinal direction of the lead frame are punched for each row in the width direction of the lead frame , and a punched portion is formed as a row of electronic component rows, and the punched portion is the punched portion. A conveyance table for rotating and conveying an electronic component row, and a separation / conveying unit having separation / conveying means for separating the electronic component row conveyed by the conveyance table into individual electronic components and transferring them to the next process In the separation / conveyance device,
The transport table is provided with a plurality of transport mechanisms for placing the electronic component rows punched by the punching unit, and the electronic component rows placed on the transport mechanism are rotated as the transport table rotates. A separation / conveyance device for electronic parts, wherein the separation / conveyance unit is conveyed to a separation / conveyance unit. Said separating and conveying portion is opposed to the placed the electronic component column on the transport mechanism, the separation and conveying means for separating and conveying individual electronic components, provided in the transport mechanism, the electronic component sequence 2. The electronic component separating / conveying apparatus according to claim 1, further comprising: a component moving mechanism that moves in the longitudinal direction and sequentially positions and supplies the individual electronic components to the separating / conveying means . The component moving mechanism includes a driving unit that is provided in the transport mechanism and moves in the longitudinal direction of the electronic component row, and separates and transports the individual electronic components of the electronic component row placed on the transport mechanism. sequentially positioning be separated and transfer apparatus for an electronic component according to claim 2, wherein Rukoto to. The said conveyance mechanism has a slide part which moves linearly in the tangential direction of the said conveyance table, The said electronic component row | line | column was mounted in the linear movement direction of this slide part, The any one of Claims 1-3 characterized by the above-mentioned. Separation / conveyance device for electronic components as described in 1. 5. The electronic component separation / conveyance according to claim 3, wherein the driving means of the component moving mechanism is a cam mechanism, and the slide portion is moved at a pitch of the electronic component by rotation of the cam mechanism. apparatus. 6. The electronic component separating / conveying device according to claim 4, wherein the slide portion is biased by an elastic member toward the cam mechanism. The electronic component separating / conveying apparatus according to claim 4, wherein the slide portion is restrained by a pressing unit when the conveying table is rotated. 3. The separation / conveying means is provided with one or more fixed positions on an electronic component row placed on the conveying mechanism, and includes a transfer head capable of conveying the electronic components. The electronic component separation / conveyance device described. 7. The electronic component separating / conveying device according to claim 5, wherein the cam body of the cam mechanism is provided with a notch. A first step of placing a row of electronic components punched for each row in the width direction of the lead frame and placing the rows on a plurality of transport mechanisms provided on a transport table and transporting them to a separation / transport unit;
In the separation / conveyance unit, a second step of moving the electronic component row in the longitudinal direction by a component moving mechanism, positioning the individual electronic components on the separation / conveyance unit, and separating / conveying the individual electronic components A method for separating and transporting electronic components, comprising:

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