JP2988251B2 - Electronic component supply device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic component supply apparatus for punching a film carrier and supplying an electronic component obtained by punching the carrier to a transfer head or the like.

[0002]

2. Description of the Related Art TAB (Tape Automated)
Electronic components obtained by the Bonding method have been increasingly used in various devices in recent years because they have a small thickness and can be highly integrated. The TAB method is a method in which leads and chips cut from a wafer are bonded to the surface of a film carrier made of a synthetic resin tape, and the film carrier is punched by a punching device to obtain electronic components. Hereinafter, a conventional electronic component supply device will be described.

FIG. 7 is a front view of a conventional electronic component supply device. Reference numeral 1 denotes a main body frame, on the front surface of which a component described below is assembled. Reference numeral 2 denotes a supply reel, which is rotatably mounted on the upper right of the main body frame 1. A film carrier 3 and a separator 4 for protecting the film carrier 3 are wound around the supply reel 2. Reference numeral 5 denotes a take-up reel, which is rotatably mounted below the supply reel 2 to take up the separator 4 fed from the supply reel 2. Supply reel 2 and take-up reel 5
Are driven and rotated by the motors M1 and M2 and the transmission belt 10, respectively.

[0004] On the left side of the main body frame 1, an upper die 6 and a lower die 7 constituting a punching portion are arranged. When the upper die 6 is driven up and down by the cylinder 8, the film carrier 3 positioned between the upper die 6 and the lower die 7 is punched. Reference numeral 9 denotes a transfer head, which vacuum-adsorbs and picks up electronic components on the lower die 7 obtained by punching the film carrier 3 and heads to a printed board (not shown) on which the electronic components are mounted. To transport.

[0005] A sprocket 12 and a guide roller 11 for bypassing the film carrier 3 are provided between the supply reel 2 and the upper die 6 and the lower die 7, and a tension roller 13 is provided below the guide roller 11 therebetween. Rail 16
Is provided so as to be able to move up and down freely. The film carrier 3 unwound from the supply reel 2 is used as a guide roller 1
1. After rotating around the tension roller 13 and the sprocket 12, and further around the sprocket 14 provided on the side of the lower die 7, the paper is wound around a collecting reel 15 and collected. The sprocket 14 and the recovery reel 15 are each provided with a motor M
3, M4 and driven by the transmission belt 10 to rotate.

Above both sides of the tension roller 13, a light emitting element 18a and a light receiving element 18 constituting first detecting means are provided.
The light-emitting element 19a and the light-receiving element 19b that constitute the second detection means are provided below both sides of the tension roller 13. The electronic component supply device configured as described above is operated while being automatically controlled by a control unit (not shown).

Next, the operation of the electronic component supply device will be described. Initially, the tension roller 13 is a light emitting element 1
9a and the lower limit position detected by the light receiving element 19b. The motor M3 is driven while the driving of the motors M1 and M2 is stopped and the rotation of the supply reel 2 and the take-up reel 5 is stopped. Then, the film carrier 3 is fed by a predetermined pitch to the left and stops. At this time, the tension roller 13
Is pulled up by the film carrier 3. Then, the cylinder 8 operates to lower the upper mold 6, and the film carrier 3 is punched by the upper mold 6 and the lower mold 7. When the upper die 6 retreats upward, the receiving head 9 enters between the upper die 6 and the lower die 7, and vacuum-adsorbs and picks up electronic components on the lower die 7 obtained by punching the film carrier 3. To a predetermined position. Empty film carrier 3 after punching
When the motors M3 and M4 are driven, they are sent to the sprocket 14 and wound around the collection reel 15 to be collected.

If the above-mentioned operation is repeated while driving the motors M3 and M4 to feed the film carrier 3 to the left pitch, the supply reel 2 stops rotating and the film carrier 3 is not fed, so that the tension roller 13 is raised by the film carrier 3 and gradually rises, and is finally detected by the light emitting element 18a and the light receiving element 18b. Then, it is found that the tension roller 13 has risen to the upper limit position. Then, the film carrier 3 is fed from the supply reel 2 by driving the motor M1. Then, the tension roller 13 descends by its own weight, and the light emitting element 19
a and the light receiving element 19b detect the tension roller 13, and it is found that the tension roller 13 has been lowered to the lower limit position. Accordingly, the driving of the motor M1 is stopped to stop the feeding of the film carrier 3, and the punching of the film carrier 3 by the upper die 6 and the lower die 7 is restarted. The motor M1 is driven to drive the film carrier 3
Is driven, the motor M2 is driven to rotate the take-up reel 5, and the separator 4 is taken up.

[0009]

The supply reel 2 feeds a film carrier 3 and the same amount of the separator 4 as the film carrier 3, and the sprocket 14 feeds the film carrier 3 at a constant pitch. It is. The film carrier 3 wound on the supply reel 2
And the winding diameter D1 of the separator 4 gradually decreases with the progress of the work, whereas the winding diameter D2 of the separator 4 wound on the take-up reel 5 and the empty film carrier 3 wound on the collection reel 15 are reduced. The winding diameter D3 gradually increases as the operation proceeds.

As described above, the supply reel 2, the take-up reel 5, the sprocket 14, and the collection reel 15 around which the film carrier 3 and the separator 4 are wound or circulated have their own operating conditions, respectively. Since it is necessary to perform the rotation control of the control unit, it is difficult to drive by the same motor.
Four independent motors M1, M2, M3, M4
Were driven individually.

However, the four motors M1, M2, M
If M3 and M4 are used, the device becomes large and each motor M
1, M2, M3, and M4 must be individually controlled, so that control is troublesome.

It is an object of the present invention to provide an electronic component supply apparatus capable of reducing the number of motors for driving a supply reel, a take-up reel, a sprocket, and a recovery reel.

[0013]

For this purpose, the present invention is arranged so that the supply reel and the take-up reel are rotated by a common first motor, and the first motor and the take-up reel are rotated between the first reel and the take-up reel. Of the film carrier and the separator wound on the supply reel, and the rotation transmitted to the take-up reel in accordance with the size of the separator wound on the take-up reel. By reducing the amount, a first friction rotation transmitting unit is provided for adjusting the film carrier feeding speed from the supply reel and the winding speed of the separator of the winding reel to be equal.

[0014]

According to the above construction, as the work progresses and the winding diameter of the separator of the take-up reel gradually increases, the friction rotation transmitting section is slipped to gradually reduce the amount of rotation transmitted to the take-up reel. The separator and the film carrier can be wound by rotating the winding reel by a predetermined amount.

[0015]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of an electronic component supply device according to one embodiment of the present invention, FIG. 2 is a cross-sectional view of the first transmission system, FIG. 3 is a cross-sectional view of the second transmission system, and FIG. Block diagram of the system,
FIG. 5 is a functional explanatory diagram of the first transmission system, and FIG. 6 is a functional explanatory diagram of the second transmission system.

In FIG. 1, reference numeral 21 denotes a main body frame to which components described below are assembled. Reference numeral 22 denotes a supply reel rotatably mounted on the upper part of the main body frame 21, and the film carrier 3 and the separator 4 are wound therearound. Reference numeral 25 denotes a take-up reel rotatably mounted below the supply reel 22 to take up the separator 4 fed from the supply reel 22. 23 is a guide roller for guiding the transport of the separator 4. M1 is a first motor that rotates the supply reel 22 by the belt 53. The take-up reel 25 is driven by the first motor M1 and rotates via a first transmission system. The first transmission system for rotating the take-up reel 25 will be described later with reference to FIG.

On the left side of the main body frame 21, an upper die 26 and a lower die 27 constituting a punching portion are arranged. Cylinder 2
8 and the upper die 26 moves up and down,
The film carrier 3 positioned between the upper mold 26 and the lower mold 27 is punched. Reference numeral 29 denotes a receiving head, which vacuum-adsorbs and receives the electronic component P obtained by punching the film carrier 3 below the lower mold 27 and transfers it to the delivery position a.
The transfer head 40 is waiting at the transfer position a, and the transfer head 40 receives the electronic component P from the receiving head 29 and transfers the electronic component P to a predetermined position. Reference numeral 41 denotes a moving table for moving the transfer head 40 to a predetermined position.

A tension roller 30 is provided between the supply reel 22 and the take-up reel 25. Reference numeral 31 denotes a cylinder, which is disposed in a horizontal posture, and a tension roller 30 is supported at the tip of a rod 32 so as to be movable in the horizontal direction. 42 is the tension roller 3
0 is a guide part. The film carrier 3 unwound from the supply reel 22 circulates around the tension roller 30, changes its direction in the horizontal direction, and is fed between the upper mold 26 and the lower mold 27. When the rod 32 of the cylinder 31 protrudes rightward, the tension roller 30 is urged rightward to apply tension to the film carrier 3.
That is, the cylinder 31 serves as urging means for the tension roller 30. As the urging means, a means for urging the tension roller 30 to the right with a spring material such as a coil spring may be used. However, when the spring material expands and contracts, the spring force fluctuates and the urging force of the tension roller 30 changes. There is. On the other hand, if the cylinder 31 is used as in this embodiment, a constant tension can always be applied even if the position of the tension roller 30 changes in the horizontal direction.

A dog 33 is provided above the tension roller 30.
Is provided. A first sensor 34 and a second sensor 35 are provided on both sides of the dog 33. The first sensor 34 detects a rightward movement limit of the tension roller 30, and the second sensor 35 detects a leftward movement limit. Reference numeral 36 denotes a sprocket provided on the left side of the upper die 26 and the lower die 27, and the film carrier 3 is horizontally adjusted between the tension roller 30 and the sprocket 36. M2 is a second motor that rotates the drive sprocket 37 by the belt 39 and rotates the collection reel 38 via the second transmission system. This second
Will be described later with reference to FIG.

Reference numeral 43 denotes a pressing roller for pressing the film carrier 3 against the driven sprocket 36 and the driving sprocket 37. The film carrier 3 circulating around the driving sprocket 37 is connected to a collection reel 3 disposed above the film carrier 3.
8 and collected. The driven sprocket 36
The pin protruding from the peripheral surface of the film carrier 3
The film carrier 3 is prevented from bending in the width direction by fitting into the pin holes opened along the longitudinal direction on both sides of the film carrier 3, and the flatness of the film carrier 3 is maintained. The die 26 and the lower die 27 are used to punch through with high precision.

A camera 70 is provided below the transport path of the film carrier 3. The camera 70 observes the film carrier 3 to detect its position, and inputs image data to a control unit (described later) 71.

Next, a first transmission system for rotating the take-up reel 25 will be described with reference to FIGS. In FIG. 1, a belt 53 is tuned to a pulley 51 which is driven by the first motor M1 and rotates, and a pulley 52 which is attached to a rotation shaft of the supply reel 22.
The first motor M1 is connected to the supply reel 22 via a belt 53.
To rotate. 2, 55 and 56 are a small pulley and a large pulley provided coaxially between the first motor M1 and the take-up reel 25. The rotation of the first motor M1 is performed by the belt 54 and the small pulley 55. Is transmitted to a pulley 58 attached to a rotation shaft of the take-up reel 25 via a large pulley 56 and a belt 57 to rotate the take-up reel 25.

In FIG. 2, reference numeral 60 denotes a horizontal rotating shaft attached to the main body frame 21. A small pulley 55 is attached to a distal end of the rotating shaft 60, and a large pulley 56 is attached to a base end thereof. ing. A belt 54 is tuned to the small pulley 55, and the rotation of the first motor M <b> 1 is transmitted to the small pulley 55 via the belt 54. A belt 57 is tuned to the large pulley 56, and rotation is transmitted to the take-up reel 25 via the belt 57.

Inside the small pulley 55, an inner sleeve 61 and an outer sleeve 62 are provided. The inner sleeve 61 is fixed to the rotating shaft 60 by a screw 63. The outer sleeve 62 is integrated with the small pulley 55. As shown, the inner sleeve 6
The first tapered outer peripheral surface A and the tapered inner peripheral surface B of the outer sleeve 62 are joined to each other. Outer sleeve 6
A spring member 64 is mounted on the rotating shaft 60 and is built in the interior of the housing 2. Reference numeral 65 denotes a stopper for the spring member 64, which is integrated with the outer sleeve 62.

Due to the extension force of the spring material 64, the tapered inner peripheral surface B of the outer sleeve 62 is
It is elastically contacted with the first tapered outer peripheral surface A. Accordingly, the rotation of the small pulley 55 and the outer sleeve 62 is transmitted to the inner sleeve 61 by the frictional force between the tapered outer peripheral surface A and the tapered inner peripheral surface B, and the rotation of the inner sleeve 61 causes the rotation shaft 60 to rotate. The rotation is transmitted to the take-up reel 25 via the large pulley 56 and the belt 57. That is, the inner sleeve 61 and the outer sleeve 62 constitute a first friction rotation transmitting unit.

FIG. 3 shows the driving sprocket 37 shown in FIG.
And an arrangement structure of a second transmission system for rotating the collection reel 38. The second transmission system has the same structure as that of the first transmission system shown in FIG. 2, and the same components are denoted by the same reference numerals with a suffix “a”, and the description thereof is omitted. here,
The inner sleeve 61a and the outer sleeve 62a
It constitutes a second friction rotation transmitting section. The belt 39 for transmitting the rotation of the second motor M2 is tuned to the small pulley 55a. A collection reel 38 is mounted coaxially with the rotating shaft 60a. Therefore, when the second motor M2 is driven, its rotation is transmitted via the belt 39 to the small pulley 5
5a, the rotation of the small pulley 55a is transmitted from the outer sleeve 62a to the inner sleeve 61a via the tapered inner peripheral surface B and the tapered outer peripheral surface A, and the rotation shaft 60
The rotation of “a” rotates the collection reel 38.
Reference numeral 38a denotes a shaft of the collection reel 38, and the shaft 38a
The empty film carrier 3 after the punching is wound up. In FIG. 4, detection signals of the first sensor 34 and the second sensor 35 and image data of the camera 70 are input to the control unit 71, and the control unit 71 uses the first motor M1 and the second motor It controls the motor M2 and the like.

Next, the operation of the electronic component supply device will be described. First, the tension roller 30 is at the rightmost position where the dog 33 is detected by the first sensor 34 (see the tension roller 33 shown by a broken line in FIG. 1). The second motor M2 is driven while the driving of the first motor M1 is stopped and the rotations of the supply reel 22 and the take-up reel 25 are stopped. Then film carrier 3
Is fed to the left by a predetermined pitch, and is wound on the collection reel 38 by that amount and stopped. Then, the cylinder 28 operates to lower the upper mold 26, and the film carrier 3 is punched by the upper mold 26 and the lower mold 27. The electronic component P obtained by punching is moved to immediately below the lower mold 27 and is vacuum-sucked by the receiving head 29 which has been waiting, and the receiving head 29 transports the electronic component P to the delivery position a (FIG. 1). (See the receiving head 29 shown by a dashed line) and transferred to the transfer head 40.

While driving the second motor M 2 to feed the film carrier 3 to the left pitch, the film carrier 3 pierced and emptied is taken up by the collecting reel 38.
When the above operation is repeated, the supply reel 22 stops rotating and does not feed the film carrier 3, so that the tension roller 30 is pulled by the film carrier 3 and gradually moves to the left, and finally the dog 33 becomes the 2 sensors 35
, It is determined that the tension roller 30 has moved to the leftmost position (see the tension roller 30 indicated by a chain line in FIG. 1). Then, the driving of the first motor M1 is started to rotate the supply reel 22, and the film carrier 3 is fed, and the separator 4 fed with the film carrier 3 is wound on the take-up reel 25. Then, the film carrier 3 is fed out and the tension of the film carrier 3 is loosened, so that the tension roller 30 moves rightward due to the protruding output of the rod 32 of the cylinder 31, and the dog 33 is detected by the first sensor 34.
It turns out that it has moved to the rightmost position (in FIG. 1,
(See the tension roller 30 indicated by the broken line). Then, the driving of the first motor M1 is stopped again, the rotation of the supply reel 22 and the take-up reel 25 is stopped, and the feeding of the film carrier 3 is stopped. The punching of the carrier 3 is restarted.

Next, the function of the first transmission system will be described with reference to FIG. In FIG. 5, R1 is the winding diameter of the film carrier 3 and the separator 4 of the supply reel 22 at the start of operation, R1 'is the same winding diameter after the operation is advanced, and R2 is the winding diameter of the separator 4 of the take-up reel 25 at the start of operation. Diameter, R
2 'is the same winding diameter after the operation proceeds.

From the supply reel 22, the film carrier 3 and the separator 4 are supplied quantitatively by the moving stroke of the tension roller 30. Therefore, when the winding diameter R1 at the start of the operation is large, the supply reel 22 is rotated slowly with a small rotation amount, and the rotation amount of the supply reel 22 is gradually increased as the operation proceeds and the winding diameter decreases. The first motor M1 is controlled by the control unit 71. Correspondingly, the take-up reel 25 needs to take up the separator 4 fed from the supply reel 22. Therefore, when the winding diameter R2 at the start of operation is small, the rotation amount is increased, and the operation proceeds. As the winding diameter increases, the amount of rotation must be reduced. That is, as the operation proceeds, the difference between the amount of rotation required for the supply reel 22 to unwind the film carrier 3 and the amount of rotation required for the take-up reel 25 to wind the film carrier 3 gradually increases. become. Therefore 1
In order to drive the supply reel 22 and the take-up reel 25 with one motor, it is necessary to absorb this difference in the amount of rotation.

Therefore, in the present apparatus, the first motor M is set so that the film carrier 3 and the separator 4 are fed out quantitatively.
1 initially rotates with a small rotation amount, and the rotation amount increases as the winding diameter of the supply reel 22 decreases.
In addition, even when the winding diameter R2 at the start of operation is the smallest, the take-up reel 25 shown in FIG. 2 is rotated so that the take-up reel 25 can rotate by a rotation amount capable of taking up the separator 4 fed from the supply reel 22. The pulley ratio between the small pulley 55 and the large pulley 56 for performing the setting is set. The taper outer peripheral surface A of the inner sleeve 61 and the tapered inner peripheral surface B of the outer sleeve 62 are caused to slip by the rotational load on the take-up reel 25 which increases as the winding diameter R2 increases. 4 take-up reel 2
Take up to 5. As described above, even if the winding diameter of the film carrier 3 of the supply reel 22 and the winding diameter of the separator 4 of the take-up reel 25 change as the operation proceeds,
The feeding speed of the film carrier 3 from the supply reel 22 and the winding speed of the separator 4 of the winding reel 25 can be made equal. Further, by configuring the first transmission system in this manner, the difference in the amount of rotation described above is absorbed, and the supply reel 22 and the take-up reel 25 can be driven by the same common first motor M1.

Next, the function of the second transmission system will be described with reference to FIG. The function of this second transmission system is exactly the same as the function of the first transmission system. That is, the drive sprocket 37 always feeds the punched and emptied film carrier 3 at a constant pitch, and the collecting reel 38 winds up the film carrier 3 in response to this. Here, the diameter r1 of the driving sprocket 37 is constant,
The winding diameter of the collection reel 38 gradually increases from r2 to r2 ′. Therefore, the difference in the amount of rotation between the recovery reel 38 and the drive sprocket 37, which increases as the winding diameter increases, and the tapered outer peripheral surface A of the inner sleeve 61a and the tapered inner peripheral surface B of the outer sleeve 62a slip. While collecting the film carrier 3 on the collection reel 38.
And roll it up. Therefore, even in this case, even if the winding diameter of the collection reel 38 gradually increases as the operation proceeds,
The feed speed of the film carrier 3 of the drive sprocket 37 and the winding speed of the film carrier 3 of the collection reel 38 can be made equal. Further, by configuring the second transmission system in this manner, the drive sprocket 37 and the recovery reel 38 can be driven by the same common second motor M2.

Although the present embodiment has been described above, various configurations of the first and second friction transmitting portions are conceivable, and the belt is adjusted in the groove on the outer periphery of the pulley and the groove is formed in the groove of the pulley. It may be configured to absorb the difference in the amount of rotation described above by sliding the belt along the belt.

[0034]

As described above, according to the present invention, the difference between the rotation amounts of the supply reel and the take-up reel, which is caused by the increase in the winding diameter of the take-up reel or the like as the operation proceeds, can be reduced by the first factor.
The separator and the film carrier are wound up while being absorbed by the friction rotation transmitting portion of the motor, so that the first motor can be shared by the supply reel and the take-up reel, the number of motors can be reduced, and the apparatus can be downsized. , The motor control is simplified. Similarly, by providing the second friction rotation transmission unit in the second transmission system on the collection reel side, the second motor can be shared by the drive sprocket and the collection reel.

[Brief description of the drawings]

FIG. 1 is a front view of an electronic component supply device according to an embodiment of the present invention.

FIG. 2 is a first view of an electronic component supply device according to an embodiment of the present invention.
Sectional view of transmission system

FIG. 3 is a diagram illustrating a second example of the electronic component supply device according to the embodiment of the present invention.
Sectional view of transmission system

FIG. 4 is a block diagram of a control system of an electronic component supply device according to an embodiment of the present invention.

FIG. 5 is a first view of an electronic component supply device according to an embodiment of the present invention.
Functional diagram of transmission system

FIG. 6 shows a second example of the electronic component supply device according to the embodiment of the present invention.
Functional diagram of transmission system

FIG. 7 is a front view of a conventional electronic component supply device.

[Explanation of symbols]

 Reference Signs List 3 film carrier 4 separator 22 supply reel 25 take-up reel 26 upper die 27 lower die 37 drive sprocket 38 recovery reel 61, 61a inner sleeve (friction rotation transmission part) 62, 62a outer sleeve (friction rotation transmission part) M1 first Motor M2 Second motor

Claims (2)

(57) [Claims] 1. A supply reel on which a film carrier and a separator are wound, a take-up reel for winding a separator fed from the supply reel, and a drive sprocket for pitch-feeding the film carrier fed from the supply reel. And a punching unit for punching a film carrier pitch-fed by the drive sprocket, wherein the supply reel and the take-up reel are rotated by the same first motor. The first transmission system between the first motor and the take-up reel includes a winding diameter of the film carrier and the separator wound on the supply reel and a winding of the separator wound on the take-up reel. Feeding out of the film carrier from the supply reel by reducing the amount of rotation transmitted to the take-up reel according to the size of the diameter. An electronic component supply device, comprising: a first friction rotation transmitting unit that adjusts a speed of the separator to be equal to a speed of the winding reel. And a recovery reel for winding and recovering the film carrier punched by the punching unit, wherein the drive sprocket and the recovery reel are rotated by the same second motor. The amount of rotation transmitted to the collection reel according to the winding diameter of the film carrier wound on the collection reel and the diameter of the sprocket in the second transmission system between the motor 2 and the collection reel. A second frictional rotation transmitting section for adjusting the feed speed of the film carrier of the drive sprocket and the winding speed of the film carrier of the recovery reel to be equal to each other. An electronic component supply device according to claim 1.