JP2000063008A - Tape reel drive shaft - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent reverse rotation transmission to the side of a motor when a spacer tape is paid out by making a drive shaft as a mutually freely rotatable double shaft structure, making an inner shaft as a main shaft connected with a driving source, making an outer shaft as a reel mounting shaft mounted on a hub hole and providing a linking and separating mechanism for both the shafts. SOLUTION: A drive shaft 22 of a tape reel 26 is made a double shaft structure of a driving main shaft 24 and a reel mounting shaft 30 and the driving main shaft 24 is connected with a motor 14 via a coupling 20. A cylindrical reel mounting shaft 30 mounted on an outer peripheral surface of the main shaft 24 can be freely rotated via a pair of bearings 36. On the surface of the reel mounting shaft 30, a key 38 is mounted and can be fitted into a key groove 40 formed in a hub hole 28. At a shaft tip part of the main shaft 24, a fixed lever 42 which is pivotally fixed so that the lever 42 may be bent and brought down is provided. At a shaft end of the reel mounting shaft 30, an engagement groove 52 which is engaged to the lever 42 and performs turning-stop is provided by the operation of the lever 42 and is made a linking and separating mechanism of both the shafts.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drive shaft structure for attaching and detaching a tape reel wound with a film or tape to a drive shaft, and particularly for use as a reel mounting shaft of a TAB manufacturing apparatus in a semiconductor manufacturing process. The present invention relates to a suitable tape reel drive shaft.

[0002]

2. Description of the Related Art In a TAB (TAPE AUTOMATED BONDING) manufacturing apparatus, a tape reel is mounted on a rotary drive shaft in order to mount a semiconductor chip on a tape film on which a circuit is formed. Drives / stops the reel and feeds the tape. Usually, the reel is attached to and detached from the drive shaft by fitting a key provided on the drive shaft side into a key groove formed in the reel hub so that the reel rotates integrally with the drive shaft. Therefore, insert the drive shaft so that it is inserted into the hub at the center of the reel, rotate the reel to the left and right so that the key and the key groove are aligned, and perform positioning, and after positioning, fix the reel to the shaft. The configuration is adopted.

In order to improve the mountability of the reel on the drive shaft, there is a structure in which the key can be moved in and out of the outer surface of the drive shaft. This has a lever at the tip of the drive shaft,
When the lever is folded, the key protrudes into the key groove, and at the same time, the lever holds the reel in to prevent it from coming off. Further, a method has also been adopted in which a rubber sleeve is attached to the drive shaft instead of the key, the rubber sleeve is configured to be axially compressible, and the reel and the drive shaft are fixed by expansion of the rubber sleeve.

[0004]

When the tape reel is set on the drive shaft, it is necessary to pull out the spacer tape sandwiched between the tapes until the product comes out of the reel. However, in the conventional configuration, when the spacer tape is pulled out, the tape reel is fixed to the reel drive shaft that is directly connected to the motor in the stopped state after the reel is mounted. I was withdrawing. Similarly, when the tape reel is removed, the reel is forcibly rotated together with the drive shaft for winding the tape. The drive shaft of the tape reel is usually connected to the motor of the drive source through the gear head, coupling, and key groove, so if the reel is manually forced to rotate, the rotation is reversely transmitted to the stopped motor. Because
There has been a problem that a mechanical load is applied to these elements, which adversely affects the shortening of the life and the risk of damage. In particular,
The coupling necessitates frequent replacement, and since the reel is made of plastic, the reel hub is rubbed by the friction between the reel shaft and the key, and the scraps are turned into dust to reduce the cleanliness.

Up to now, as described above, there has been a keyless structure in which the key of the shaft can be moved in and out, and the reel is fixed by the elasticity of rubber. However, the operation is uncertain, and the reel and the drive are driven. There is a problem in that deterioration occurs due to rubbing with the shaft. Also, with the key-fitting structure, when the reel is mounted on the reel shaft, the key-fitting position cannot be seen easily, making it difficult to mount the reel. There is also a drawback in that the inner surface of the reel shaft center hole may be worn and the reel may be damaged.

The present invention has been made by paying attention to the above-mentioned conventional problems. First, when the spacer tape is unwound from the reel or the like, reverse rotation transmission to the motor side is made free from the drive side. It is an object of the present invention to provide a tape reel mounting shaft having a structure that does not exist. Secondly, it is an object of the present invention to provide a tape reel mounting shaft in which the reel can be easily attached and detached to and from the drive shaft only once. Thirdly, it is an object of the present invention to provide a tape reel mounting shaft in which the reel and the drive shaft can be temporarily fixed so that the reel can be easily positioned.

[0007]

In order to achieve the above object, a tape reel drive shaft according to the present invention has, firstly, a double shaft structure in which the drive shafts of the tape reel are mutually rotatable, and an inner shaft is provided. Is a main shaft connected to the drive source, the outer shaft is a reel mounting shaft mounted in the hub hole of the tape reel, and a separating mechanism for connecting the main shaft and the reel mounting shaft is provided.

In this case, the connecting / separating mechanism is
A fixing lever pivotally attached to the shaft end of the main shaft so as to be bendable, and engaging with the end of the reel mounting shaft by a bending operation of the fixing lever to prevent rotation. A groove is provided, or a fixed lever pivotally attached to the shaft end of the main shaft so as to be bendable and tiltable, and the reel mounting shaft end is bent and tilted. It is possible to adopt a configuration in which an engagement groove that engages with the lever and acts as a rotation stop is provided by an operation.

Further, a ball plunger may be provided on the main shaft, and a ball engaging concave portion which is held by the ball plunger at an engaging position with an engaging groove of the reel mounting shaft may be formed on the fixed lever. Further, it is preferable that a key fitted to the reel mounting shaft and fitted into a key groove formed in the hub hole of the reel is arranged on the base side of the reel mounting shaft.

[0010]

According to the above construction, when the tape reel is mounted on the reel mounting shaft of the outer shaft, the reel mounting shaft is free to rotate with respect to the main shaft of the inner shaft. Therefore, the tape reel is allowed to freely rotate in the mounted condition. be able to. Therefore, the spacer tape can be pulled out with a light motion without performing reverse rotation transmission to the motor side. When mounting the tape reel, the key and the key groove are fitted together, but by integrating the double shaft structure with the connecting and separating mechanism, the operation of aligning the reel with the key position on the shaft side can be simplified. ing. In particular, by configuring the fixing lever so that the tilting operation is possible, it is easy to temporarily integrate the outer sleeve-shaped reel mounting shaft with the main shaft, and the load during the key groove aligning work is small. Also, when fixing the reel completely, by bending the fixing lever, the lever is engaged and held in the engaging groove of the mounting shaft, and in particular, by using the ball plunger together, reliable operability is realized. it can. By providing the key on the base side of the shaft, there is an advantage that the tape reel does not hit the fixed lever when the fixed lever is tilted or the like and the reel having the maximum width is mounted.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Specific embodiments of a tape reel drive shaft according to the present invention will be described in detail below with reference to the drawings.

1 to 3 are a sectional view, a plan view and a front view of a tape reel drive shaft according to an embodiment. As shown in these drawings, a stay 12 is erected on the rear surface of the device frame 10, and a mounting plate 1 for the motor 14 is mounted on the stay 12.
6 is fixed. The motor 14 projects the output shaft 18 toward the device frame 10 side, and allows the tape reel drive shaft 22 to rotate via a coupling 20 arranged in the space between the mounting plate 16 and the device frame 10.

The tape reel drive shaft 22 according to the embodiment
Has a double shaft structure in which mutual free rotation is possible, as clearly shown in FIG. The double shaft is configured such that the inner shaft serves as a drive main shaft 24 connected to a drive source and the outer shaft serves as a reel mounting shaft 30 mounted in a hub hole 28 of a tape reel 26.

The drive spindle 24, which is rotationally driven by the rotation transmission from the motor 14, is mounted so as to project from the surface of the device frame 10. First, the bearing holder 32 is attached to the opening of the device frame 10. It is fixed and is connected to the motor 14 via the coupling 20 at the center thereof. A ball bearing 34 serving as a bearing of the drive main shaft 24 is interposed between the drive main shaft 24 and the bearing holder 32, and the drive main shaft 24 is rotatably supported with respect to the apparatus frame 10.
The drive main shaft 24 further projects from the tip end surface of the bearing holder 32, and a reel mounting shaft 30 having a sleeve structure as an outer shaft is mounted on the outer periphery of the drive main shaft 24.

The reel mounting shaft 30 has a flange 30 at the base end.
It has a cylindrical shape with f formed and is mounted on the outer peripheral surface of the main shaft 24 by inserting the drive main shaft 24 from the flange 30f side. A pair of bearings 36 are interposed between the drive main shaft 24 and the reel mounting shaft 30 having the double shaft structure, and the reel mounting shaft 3 which is an outer shaft with respect to the drive main shaft 24.
0 is allowed to rotate freely. Reel mounting shaft 30
Is a member to which the tape reel 26 is directly attached,
Therefore, a key 38 is attached to the surface so as to transmit rotation to the reel 26, and can be fitted into a key groove 40 formed in the hub hole 28 of the reel 26. The key 38 prevents the fixed lever provided on the base side of the reel mounting shaft 30 from hitting the tape reel when the maximum width reel is mounted when the fixed lever is tilted or otherwise operated. , The reel mounting shaft 3 with respect to the drive spindle 24
Although 0 is attached so as to be freely rotatable, a connecting / separating mechanism is provided for selecting either of them to rotate integrally or to freely rotate only the outer reel mounting shaft 30. This connecting / separating mechanism has a fixed lever 42 pivotally attached to the shaft end of the main shaft 24 so as to be bendable and tiltable.
On the other hand, the lever 42 is provided at the shaft end of the reel mounting shaft 30 by the bending operation and tilting operation of the fixed lever 42.
An engaging groove 52 that engages with and forms a detent is provided. That is, the shaft tip portion of the main shaft 24 is formed into a fork, and the fixing lever 42 is pivotally attached. Fixed lever 42
As shown in FIG. 4, is formed of a rectangular flat plate and is pin-coupled to the main shaft 24 by utilizing a pivot hole 46 formed at one end side. Therefore, by swinging the end opposite to the side where the pivot hole 46 is formed with a finger, it is possible to perform a tilting operation in a direction orthogonal to the axis of the main shaft 24 and a tilting operation to the opposite side. . A first engaging claw 48 is formed on the side edge of the fixed lever 42 on the side of the pivoting end at the pivoting end in the direction orthogonal to the axis of the main shaft 24. A second engagement claw 50 is formed on the side opposite to the mating claw 48, but has a lower side as a claw portion. On the other hand, on the shaft end surface of the reel mounting shaft 30, an engagement groove 52 is formed along the cross direction. As a result, the first engaging claw 48 is moved to the reel mounting shaft 30 by tilting the fixed lever 42 until it is orthogonal to the main shaft 24.
Can be fitted into the engaging groove 52 of the double shaft in this state, and the rotation from the motor is transmitted to the reel mounting shaft 30. When the fixing lever 42 is tilted to the opposite side, the second engaging claw 50 is fitted into the engaging groove 52, and the main shaft 24 and the reel fixing shaft 30 are similarly integrated. Since the second engagement claw 50 is provided on the lower side of the fixed lever 42, the engagement state is realized by slightly inclining the fixed lever 42 with respect to the shaft center, which is effective for temporary fixing.

By the way, the tilting of the fixed lever 42 can be stopped at the position where the first engaging claw 48, which is the rotation restraining position of the reel mounting shaft 30, is engaged. In this structure, a ball plunger 54 is embedded in the shaft end of the main shaft 24, while a recess 56 into which a plunger ball is inserted is formed in the fixed lever 42 so that the tilted position can be maintained by an appropriate click feeling.

The tape reel drive shaft according to such an embodiment has a double shaft structure, and a key 38 is provided on a reel mounting shaft 30 as an outer shaft for securely fixing the reel 26. It has a structure that does not idle around the mounting shaft 30. Then, the drive main shaft 24 as the inner shaft of the reel mounting shaft 30 is separated so that it can be connected as necessary. Therefore, the mounted reel 26
When removing the spacer tape from the two shafts 24, 30
The reel 26 may be rotated together with the reel mounting shaft 30 in a state in which the connection is removed.

Further, since there is a bearing 36 between the main shaft 24 and the reel mounting shaft 30, it can be smoothly rotated. The main shaft 24 and the reel mounting shaft 30 are connected by bending the fixed lever 42 upward as shown in FIG.

Further, since the reel 26 is set with the fixed lever 42 extended concentrically with the main shaft 24, the reel mounting shaft 24 rotates and it becomes difficult to align the key groove.
By tilting the fixing lever 42 in the opposite direction and temporarily fixing it, temporary connection is achieved, and it is easy to align the key groove during reel setting.

[0020]

As described above, according to the present invention, the drive shaft of the tape reel has a double shaft structure in which the drive shaft is freely rotatable with each other, the inner shaft is the main shaft connected to the drive source, and the outer shaft is the tape. Since there is no reel mounting shaft to be mounted in the hub hole of the reel, and there is provided a separating mechanism for connecting the main shaft and the reel mounting shaft, rotation is not transmitted in reverse.
The scraps on the plastic reel can be greatly reduced by making the coupling and the like in a normal use state. Connection and disconnection of the double shaft can be easily done with one operation of the fixed lever.

[Brief description of drawings]

FIG. 1 is a cross-sectional configuration diagram of a tape reel drive shaft according to an embodiment.

FIG. 2 is a plan view of the tape reel drive shaft.

FIG. 3 is a front view of the tape reel drive shaft.

FIG. 4 is a front view and a side view of a fixed lever.

[Explanation of symbols]

10 device frame 12 stay 14 Drive motor 16 Mounting plate 18 Motor output shaft 20 Coupling 22 Tape reel drive shaft 24 Drive spindle 26 tape reel 28 Hub hole 30 reel mounting shaft 30f flange 32 bearing holder 34 ball bearing 36 bearings 38 keys 40 keyway 42 Fixed lever 46 pivot hole 48 First engaging claw 50 Second engaging claw 52 engagement groove 54 ball plunger 56 recess

Claims (5)

[Claims] 1. A reel mounting system in which a drive shaft of a tape reel has a double shaft structure capable of mutually freely rotating, an inner shaft serves as a main shaft connected to a drive source, and an outer shaft is mounted in a hub hole of the tape reel. A tape reel drive shaft, characterized in that it is provided with a separating mechanism for connecting the main shaft and the reel mounting shaft. 2. The connecting / separating mechanism has a fixed lever pivotally attached to the shaft end of the main shaft so as to be bent, and the end of the reel mounting shaft is bent by the bending operation of the fixed lever. The tape reel drive shaft according to claim 1, further comprising an engagement groove that engages with and forms a detent. 3. The connecting / separating mechanism has a fixed lever pivotally attached to a shaft end of the main shaft so as to be bendable and tiltable, and a bending operation and a tilt of the fixed lever are provided at an end of the reel mounting shaft. 2. The tape reel drive shaft according to claim 1, further comprising an engagement groove that engages with the lever to prevent rotation by an equal operation. 4. A ball plunger is provided on the main shaft,
4. The tape according to claim 2, wherein the fixing lever is formed with a ball engaging recess that is held by the ball plunger at an engaging position with an engaging groove of a reel mounting shaft. Reel drive shaft. 5. The tape reel according to claim 1, wherein a key fitted to the reel mounting shaft and fitted in a key groove formed in a hub hole of the reel is arranged on the base side of the reel mounting shaft. Drive shaft.