JP2861797B2 - 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. 5 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 at the lower limit position detected by the lower light emitting element 19a and 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 wound by the film carrier 3. Then, the cylinder 8 is operated and the upper die 6 is lowered, and the upper die 6 and the lower die 7 are moved.
As a result, the film carrier 3 is punched. When the upper die 6 retreats upward, the transfer 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. Then, it is transferred to a predetermined position. Further, the blank film carrier 3 after being punched is sent to the sprocket 14 by the motors M3 and M4 being driven, wound up on the collecting reel 15, and 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. When the motor M1 is driven to feed out the film carrier 3, the motor M2 is driven to rotate the take-up reel 5, and the separator 4 is taken up.

As described above, in this conventional apparatus, the tension roller 13 is disposed so as to be movable up and down, and the feeding of the film carrier 3 from the supply reel 2 is controlled while detecting the upper limit position and the lower limit position. Had become.

[0010]

However, the above-mentioned conventional apparatus has the following problems. That is, in order to reduce the width W1 of the apparatus and make the apparatus compact, it is desirable that the tension roller 13 be disposed between the supply reel 2 and the take-up reel 5. However, in the configuration in which the tension roller 13 is moved up and down, the supply reel 2
And the take-up reel 5 require a large space, the height H of the apparatus becomes abnormally high, which causes a problem in management of the supply reel 2 and the like. Incidentally, in order to wind the film carrier 3 as long as possible, it is desirable that the supply reel 2 has a large diameter. For this reason, a reel having a diameter of 60 cm or more is currently being implemented. 5 is also significantly larger. If the tension roller 13 is vertically movable between the supply reel 2 and the take-up reel 5 which have been increased in size as described above, the height H becomes abnormally high.

In the above configuration, a detour sprocket 12 for detouring the film carrier 3 to the tension roller 13 is required. However, if the diameter of the sprocket 12 is reduced, the orbital radius of the film carrier 3 is reduced. As a result, a large stress is applied to the film carrier 3. Due to this stress, a stress is also applied to the leads and chips bonded to the film carrier 3, and in particular, stress is applied to the joint between the leads and the chips, causing problems such as peeling of the leads from the chips. Therefore, it is necessary to make the diameter of the sprocket 12 as large as possible so that a large stress is not applied to the film carrier 3, and the diameter of the sprocket 12 is about 20 cm at present. However, it is necessary to manufacture the sprocket 12 precisely because it greatly affects the appropriateness of the pitch feed amount of the film carrier 3. If a large sprocket 12 having a diameter of 20 cm is manufactured precisely, the manufacturing cost is extremely high. There was a problem that it became expensive.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide an electronic component supply apparatus that can be made compact and compact as a whole and that does not require a sprocket for bypassing a film carrier. And

[0013]

For this purpose, the present invention provides a tension roller for applying tension to a film carrier which is fed from a supply reel and sent to a punching section, in a horizontal direction between the supply reel and the take-up reel. Arranged freely,
Further, there are provided a biasing means for biasing the tension roller in the horizontal direction for applying tension to the film carrier, and a control means for controlling the rotation of the supply reel and the take-up reel.

[0014]

In the above construction, since the tension roller is disposed so as to be movable in the horizontal direction, the height of the apparatus does not increase so much even if the tension roller is disposed between the supply reel and the take-up reel. Can be smaller. Further, since the film carrier can be fed horizontally from the tension roller to the punching section, a sprocket for bypassing the film carrier to the tension roller as in the above-described conventional example can be eliminated.

[0015]

【Example】

(Embodiment 1) Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front view of an electronic component supply device according to a first embodiment of the present invention, and FIG. 2 is a block diagram of a control system of the electronic component supply device. In FIG. 1, reference numeral 21 denotes a main body frame, and the following components are assembled on the front surface thereof. Reference numeral 22 denotes a supply reel,
1 is rotatably mounted on the upper right. A film carrier 3 and a separator 4 for protecting the film carrier 3 are wound around the supply reel 22. Reference numeral 25 denotes a take-up reel, which is rotatably mounted on a shaft below the supply reel 22.
Take up. 23 is a guide roller for the separator 4.
The supply reel 22 and the take-up reel 25 each have a motor M
1, M2 and the drive belt 20 rotate.

On the left side of the main 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 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. The film carrier 3 unwound from the supply reel 22 circulates around the tension roller 30 and changes its orientation in the horizontal direction to form an upper mold 26 and a lower mold 27.
Sent between 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 is
This is the urging means of zero. 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 below 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. The film carrier 3 that has circulated around the sprocket 36 is wound and collected on a collection reel 37 disposed above the film carrier 3. Sprocket 36 and recovery reel 37
Are the motors M3, M4 and the transmission belt 20,
38 to rotate. In the present embodiment, the supply reel 22, the take-up reel 25, the sprocket 36, and the collection reel 37 are respectively provided with individual motors M1, M2, M3,
Although it is rotated by M4, it may be appropriately rotated by a common motor.

Reference numeral 40 denotes a driven sprocket, which is disposed between the tension roller 30 and the sprocket 36. In the driven sprocket 40, the pins protruding from the peripheral surface of the driven sprocket 40 are fitted into pin holes opened along both sides of the film carrier 3 along the longitudinal direction, so that the film carrier 3 is moved in the width direction. To prevent it from bending
The flatness of the film carrier 3 is maintained so that the upper die 26 and the lower die 27 can be punched out with higher precision.

In FIG. 2, detection signals from the first sensor 34 and the second sensor 35 are input to a control unit 71, which controls the driving of the motors M1, M2, M3, M4 and the like. The motors M1 and M2, the control unit 71
Are control means for controlling the rotation of the supply reel 22 and the take-up reel 25.

Next, the operation of the electronic component supply device will be described. Initially, the tension roller 30 is at the rightmost position where the dog 33 is detected by the first sensor 34 (see the tension roller 30 indicated by a broken line in FIG. 1). The motors M3 and M4 are driven while the driving of the motors M1 and M2 is stopped and the rotations of the supply reel 22 and the take-up reel 25 are stopped. Then film carrier 3
Is sent to the left by a predetermined pitch, and is wound on the collection reel 37 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 transfers the electronic component P to a predetermined position.

The motors M3 and M4 are driven to feed the film carrier 3 pitchwise to the left, and the punched and empty film carrier 3 is taken up by the collecting reel 37.
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 motor M1 is started to rotate the supply reel 22, and the film carrier 3 is fed, and the driving of the motor M2 is started, and the separator 4 fed with the film carrier 3 is taken up by the take-up reel 25. To take up. Then, the tension roller 30 moves rightward due to the protruding output of the rod 32 of the cylinder 31, is detected by the first sensor 34, and is found to have moved to the rightmost position (in FIG. 1, the tension roller 30 indicated by a broken line).
See). Therefore, the driving of the motors M1 and M2 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.
Film carrier 3 by upper mold 26 and lower mold 27 described above
Resume punching.

As described above, this electronic component supply device is
Since the tension roller 30 is movable in the horizontal direction to apply tension to the film carrier 3 and is disposed between the supply reel 22 and the take-up reel 25, the overall width W2 is shown in FIG. It can be made much smaller than the conventional example and can be downsized. Further, since the film carrier 3 can be caused to travel horizontally from the tension roller 30 to the sprocket 36 without being diverted on the way, FIG.
As in the conventional example shown in FIG. 1, a large sprocket 12 for bypassing the film carrier 3 to the tension roller 13 side can be eliminated.

(Embodiment 2) FIG. 3 is a front view of an electronic component supply apparatus according to a second embodiment of the present invention. In the second embodiment, a guide roller 41 for bypass is provided between the supply reel 22 and the tension roller 30. Other configurations are the same as those of the first embodiment shown in FIG. By providing the detour guide roller 41 in this manner, the rotation angle θ of the film carrier 3 circling the tension roller 30 is always constant even if the tension roller 30 moves in the horizontal direction, and is provided to the film carrier 3. Tension can be kept constant.
In the first embodiment shown in FIG. 1, since the film carrier 3 fed from the supply reel 22 goes around the tension roller 30 as it is, the rotation angle θ varies depending on the position of the tension roller 30, and the film carrier 3
There is also a drawback that the driving stability is somewhat poor because the tension applied to the tire also varies.

(Embodiment 3) FIG. 4 is a front view of an electronic component supply apparatus according to a third embodiment of the present invention. In the third embodiment, the tension roller 30 and the guide roller 41 are replaced with those of the second embodiment. Accordingly, the positions of the cylinder 31, the first sensor 34, and the second sensor 35 are changed as shown. Other configurations are the same as those of the second embodiment. Therefore, the dog 33
When the sensor 34 is at the leftmost position detected by the sensor 34, the punching of the film carrier 3 by the upper die 26 and the lower die 27 is started. Then, the tension roller 30 is pulled by the film carrier 3 and moves rightward to move the second sensor 35.
Is detected, the motors M1 and M2 start driving, the film carrier 3 is fed from the supply reel 22, and the tension roller 30 returns to the leftmost position. Of course, second,
According to the third embodiment, the same effects as those of the first embodiment can be obtained. As is clear from the above embodiments, various specific configurations of the present invention can be considered.

[0027]

As described above, according to the present invention, by arranging the tension roller between the supply reel and the take-up reel so as to be movable in the horizontal direction, the width of the electronic component supply device can be reduced. Therefore, the whole can be made compact and compact. In addition, a large and extremely expensive sprocket for bypassing the film carrier to the tension roller side can be eliminated, so that the cost can be reduced.

[Brief description of the drawings]

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

FIG. 2 is a block diagram of a control system of the electronic component supply device according to the first embodiment of the present invention.

FIG. 3 is a front view of an electronic component supply device according to a second embodiment of the present invention.

FIG. 4 is a front view of an electronic component supply device according to a third embodiment of the present invention.

FIG. 5 is a front view of a conventional electronic component supply device.

[Description of Signs] 3 Film carrier 4 Separator 22 Supply reel 25 Take-up reel 30 Tension roller 31 Cylinder (biasing means) 34 First sensor 35 Second sensor 36 Guide roller 37 Collection reel (collection unit)

Claims (2)

(57) [Claims] A supply reel on which a film carrier and a separator are wound; a take-up reel disposed below the supply reel for winding a separator fed from the supply reel; A tension roller provided between the take-up reels to apply tension to the film carrier fed from the supply reel, and a punching device for punching the film carrier that circulates around the tension roller and feeds horizontally to obtain electronic components. An electronic device, comprising: a unit, a biasing unit that biases the tension roller in a horizontal direction that applies tension to the film carrier, and a control unit that controls rotation of the supply reel and the take-up reel. Parts supply equipment. 2. A first detecting means for detecting a horizontal movement limit position of the tension roller in the horizontal direction and a second detection means.
The control means controls the rotation of the supply reel and the take-up reel based on detection signals of the first detection means and the second detection means. An electronic component supply device according to claim 1.