JP2000049187A - Spool case for bonding wire and spool handling method employing it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spool case excellent in protection of bonding wire in which a contained spool can be fitted to a bonding holder and removed therefrom without touching the spool directly and highly reliable holding state of spool can be sustained easily. SOLUTION: A spool 100 is held in a container body 1 by a holding means 6 disposed on the inside of the side face part 4 and can be handled without touching it with a hand. A bonding wire wound around the drum section 101 of the spool 100 is protected by a protective means 7 having a cover face part 5 and a bottom face part 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spool case for a semiconductor bonding wire, and more particularly to a spool case capable of handling a spool without touching a bonding wire wound around a spool body.

[0002]

2. Description of the Related Art Conventionally, various cases are known as a case for accommodating a spool around which a bonding wire used for assembling a semiconductor device is wound. For example, Japanese Utility Model Publication No. 58-41188 discloses a container body integrally provided with an upwardly protruding fitting ridge for fitting a spool, and a lid body fitted to an outer peripheral ridge of the container body. A spool having a holding recess formed on the body corresponding to the fitting ridge to be fitted with the spool, and the accommodated spool being fixedly held by the fitting ridge and the lid to prevent rattling. A case is disclosed.

The spool accommodated in this type of spool case is taken out of the case at a semiconductor device assembling site or the like and mounted on a spool holder of a wire bonding apparatus. However, conventionally, the spool flange is held by hand. There is a possibility that the wire may be damaged due to a hand touching the wire surface.

In order to solve such a problem, Japanese Patent Application Laid-Open No. 7-86326 discloses a spool case comprising a container body and a lid which are fitted to each other. And a spool case for a bonding wire including a spool holding portion that can be attached and detached without directly touching the spool with the hand.

[0005]

However, a detailed study of the conventional spool case described in the above publication has the following problems. That is, the spool holding portion of the spool case is an operation portion for elastically deforming the loading wall inside the loading wall that comes into contact with the inner wall of the spool, as seen from the detailed description of the invention. It is provided with a concave portion, and the contact pressure of the charging wall against the inner wall of the body portion is adjusted by elastically deforming the charging wall by opening or closing the finger inserted into the concave portion outward or inward. . On the other hand, the spool is mounted so as to be fitted into the spool holder of the wire bonding apparatus from the outside. The length of the spool holder varies depending on the bonding apparatus, and in recent years, the length of the wire wound around the spool is long. In order to cope with the increase in the total weight of the spool due to the development, various types of spool holders provided with spool engaging means are provided, and the engaging means is attached to the spool holder so as to come into contact with the inner wall of the body of the spool. Therefore, when a conventional spool case is used in which the loading wall is brought into contact with the inner wall of the spool to hold the spool, the spool holding portion hits the tip of the spool holder or the spool locking means, and the spool is mounted. There is a fear that this may cause trouble.

As described above, the conventional spool case is as follows.
The contact pressure of the spool holding portion is adjusted by opening and closing the finger inserted into the concave portion. If a finger operation is mistaken due to carelessness of an operator or the like, the contact is released and the spool may fall off. There is.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and an object thereof is to hold a spool housed in a case without touching the spool, and to provide a spool for a bonding apparatus. To provide a spool case that can be attached and detached irrespective of the length of the spool holder and the presence or absence of the spool hooking means, has high spool holding reliability, and can easily maintain the spool holding state. .

[0008]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a method for holding a spool by detachably engaging with either a container main body or a lid on an outer peripheral edge of a flange of the spool. The gist is to provide a holding means and a protection means for covering the periphery of the bonding wire wound around the body of the spool held by the holding means.

In this case, the spool is held by the container body or the lid by the holding means provided on either the container body or the lid, and the spool can be handled without directly touching the spool. The holding state is not released unless the engagement by the holding means is released. In the holding state, the holding means is held by being engaged with the outer peripheral edge of the flange, and it goes without saying that there is no interference with the wire wound around the spool body or the inside of the spool body. Further, in the holding state, the bonding wire wound around the body of the spool can be protected by the protection means.

[0010] The container body is provided with the holding means inside a side surface portion raised on one side edge of the bottom surface portion, so that the spool can be held in a horizontal state, and the outer edge of the side surface portion and the bottom surface portion are formed. A cover surface portion is provided continuously with the front and rear edges, and the protection means is formed by the cover surface portion and the bottom surface portion. The lid body has a box shape with an open lower surface, and is placed on the container body from above to cover the container body. Should be formed so as to cover the periphery.

In this case, since the spool is held in the horizontal state, the load of the wire itself, vibrations and shocks during handling and transport, etc. are distributed almost evenly over the entire length of the wire wound around the spool body. Structure
The winding collapse of the wire can be effectively prevented. In the holding state, the periphery of the spool body can be covered with the cover surface and the bottom surface to protect the bonding wire wound around the body. And since the periphery of this spool is covered with a lid that covers the container body from above,
The spool case can be opened and closed without the lid interfering with the bonding wire, and the bonding wire can be double protected by the protection means and the lid.

In the container main body, the upper edge of the side portion is formed in an arc shape along the outer peripheral edge of the flange of the spool, the cover surface portion is formed in an arch shape along the outer edge of the side portion, and the cover surface portion and the bottom surface portion are formed. It is preferable that the outer peripheral edge of the flange is formed so as to be able to be pinched and the holding means is formed, and the outer edge of the side surface portion is formed so as to be grippable. In this case, the holding of the spool and the protection of the bonding wire can be performed with a simple structure without providing an engaging piece, an engaging claw, an engaging protrusion, or the like for holding the flange inside the side surface portion. It also contributes to cost-effective manufacturing. Further, the spool held by the container body can be handled without forming a gripping means protruding outward from the container body, and the spool case can be formed as thin and small as possible.

An opening communicating with the inside of the body of the spool may be formed in the side surface. In this case, when the spool held by the container main body is mounted on the spool holder, the opening serves as a relief portion corresponding to the protrusion of the spool holder, which facilitates handling and improves versatility.

When a fall prevention leg is provided at the opening edge of the lower surface of the lid, it is useful for preventing the fall in the state where the spool is housed in the case. Further, the leg piece for preventing falling may be provided on the container body side.

The bottom surface of the container body is inclined downward toward the other side edge opposite to the one side edge provided with the side surface portion, and the bottom surface is provided with a spool held by the holding means. It is preferable to provide stationary means which can be held in a horizontal state where the central axis is substantially horizontal. In this case, since the bottom portion has an expanded shape, the spool can be easily attached to and detached from the holding means inside the side portion. In addition, since the stationary means is provided, the spool can be held in a horizontal state in which the center axis is substantially horizontal. Therefore, it is possible to easily insert and remove the spool into and from the container body without reducing the effect of preventing the winding collapse of the bonding wire. As the stationary means, for example, a protrusion, a leg, or the like capable of holding the spool held by the holding means in a horizontal state can be exemplified.

The bonding wire wound around the spool is used by bonding both ends to a flange of the spool with a tape or the like. When bonding to the outside of the flange,
The flange is provided with a notch for passing a wire. The notch can be used on one or both flanges of the spool. Therefore, if an opening is formed at one end or both ends in the width direction of the cover surface portion to expose the tape fixing end of the bonding wire in the spool held by the container body, the spool is held in the container body. Using a tool such as tweezers or the like, the tape peeling operation at the tape stop end can be performed.

The spool case of the present invention includes a mode in which a spool around which a bonding wire is wound is housed inside the spool case.

The use of the spool case of the present invention can be preferably used in this technical field as a handling method capable of handling the spool without directly touching the spool.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 to 7, a indicates a spool case, 100 indicates a spool, 110 indicates a bonding wire, and 200 indicates a spool holder of a bonding apparatus.

The spool 100 has a structure usually used in this kind of technical field, and includes a bonding wire 11.
0, and a cylindrical body 101 for winding the
Left and right flanges 102 and 103 provided around the open edges of both ends
It has.

The spool case a is composed of a container body 1 and a lid 2 fitted to each other, and the container body 1 and the lid 2 can be elastically deformed by being molded by a vacuum molding method using a plastic material or the like. In addition, the spool 100 is integrally formed so as to be able to be restored, and the spool 100 around which the bonding wire 110 is wound is accommodated inside the container body 1, and the lid 2 is fitted over the spool 100 from above.

The container body 1 has a rectangular bottom surface 3 having a length approximately equal to the axial length of the spool 100 and a width approximately the same as the radial width of the spool 100. The side portion 4 is raised at one side edge, the upper edge of the side portion 4 is formed in an arc shape along the outer peripheral edge of the flange 102 of the spool, and the outer edge 4a of the side portion 4 and the front and rear edges 3a, An arch-shaped cover surface portion 5 is provided so as to be connected to 3a.

Then, the bottom portion 3 inside the side portion 4
The holding means 6 is formed so that the outer peripheral edge of the flange 103 can be sandwiched by the ends 3b and 5a of the cover surface portion 5 and is engaged with the outer peripheral edge of the flange 103 so as to be detachably engaged to hold the spool 100 in a horizontal state. I do. The outer edge 4a of the side surface portion 4 is formed so as to be grippable while holding the spool 100 by the holding means 6, and functions as a handle when handling the spool 100. In addition, the bottom surface 3 and the cover surface 5
The trunk 10 of the spool 100 held by the holding means 6
The protection means 7 which covers the periphery of the bonding wire 110 wound around 1 is formed. Numerals 8 denote left and right protrusions projecting from the inside of the side surface portion 4.
The outer peripheral edge 2 is formed so as to be able to engage with two lower left and right edges.

An opening 9 communicating with the inside of the body 101 of the spool 100 held by the holding means 6 is formed in the side surface 4. The opening 9 is provided on the spool 10 held by the container body 1.
When the “0” is mounted on the spool holder 200, it serves as a relief portion corresponding to a protruding portion (for example, a spring-like engaging portion) of the spool holder 200.

The bottom 3 is provided with one end 3b provided with the side 4
Is formed in a downwardly inclined shape toward the other side portion 3c facing the
Thereby, the space surrounded by the bottom surface portion 3 and the cover surface portion 5 (that is, the accommodation space 10 of the spool 100 held by the holding means 6) has an expanded shape so that the spool 100 can be easily attached to and detached from the holding means 6. I do.

On the lower surface of the bottom part 3, there is provided stationary means capable of holding the spool 100 held by the holding means 6 in a horizontal state in which the center axis is substantially horizontal. The stationary means is formed by supporting pieces 11a, 11b provided along the front and rear edges 3a, 3a of the bottom face 3 and the other end 3c.

Openings 12 and 13 are provided at both ends in the width direction of the cover surface portion 5 to expose the tape fixing ends of the bonding wires of the spool 100 held by the container body 1.
To form That is, the side surface portion 4 of the cover surface portion 5
An opening 12 is formed in the upper surface of the side end 5a to expose a tape-stop end 120 to be taped to one flange 103. The cover surface 5 is provided with a holding means 6.
The other flange 1 of the spool 100 held by
02 between the cover surface portion 5 and the open end 5b of the cover surface portion 5.
An opening 13 for exposing a tape-stop end 121 to be tape-fixed to the other flange 102 is formed so as to have a width enough to make the width 4.

The lid 2 has an inclined surface 21 slidably in contact with the outer surface of the side surface 4 at one side edge of a lower surface opening 20 fitted into the bottom surface 3 from above.
0 on the other side edge, the spool 100 held by the holding means 6
The upper surface of the other flange 102 is formed with an inclined surface 22 slidably in contact with the upper surface of the lower surface opening 20, and the front and rear surfaces 2 slidably contact the outer surfaces of the left and right side surfaces of the cover surface 5.
3 and 24, and their respective surfaces 21, 22, 2
It has a box-like shape with a lower surface opening, with a ceiling surface 25 provided continuously between the upper edges of 3, 3. Then, the container body 1 holding the spool 100 is fitted to the outside of the container body 1 from above, and the container body 1
While protecting the periphery of the spool 100 held in
The spool 100 is formed so as to prevent the spool 100 from rattling in the axial direction and the radial direction and to maintain the holding state by the holding means 6.

Openings 26, 26 are formed in the lower portions of the front and rear surfaces 23, 24 to expose lower portions on both left and right sides of the cover surface portion 5. These openings 2 are used to open and close the spool case a.
6, lower portions 5c on both left and right sides of the cover surface portion 5
To hold the container body 1.

At the edge of the lower opening 20 of the lid 2, leg pieces 30 and 31 for preventing the tip extending outward are provided with inclined surfaces 2 and 3.
It is provided in the lower edge of 1,22 in a continuous form. These leg pieces 30, 3
1 is formed so as to prevent the spool 100 from falling over in a state where the spool 100 is accommodated in the case a. Also, the inclined surface 2 of the lid 2
Ribs (not shown) that bulge inward can be provided on the first and the second 22. The ribs are preferably strip-shaped or rod-shaped, and it is preferable to provide about 1 to 4 ribs on each of the inclined surfaces 21 and 22. Preferably, the rib is provided at a position avoiding the opening 12 of the container body 1. By providing the ribs in this way, the lid 2
And the spool 100 can be prevented from playing, and at the same time, the contact between the lid 2 and the tape stoppers 120 and 121 can be prevented.

According to the spool case a of the present embodiment configured as described above, the spool 100 is inserted into the housing space 10 surrounded by the bottom surface 3 and the cover surface 5 of the container body 1, and one of the flanges 103. Is held by holding means 6 including end 3b of bottom 3 and end 5a of cover surface 5 and left and right protrusions 8, 8, and spool 100 is held in container body 1 in a horizontal state. Then, the lid 2 is placed on the container body 1 from above, and the case a is closed. Incidentally, the outer peripheral edge of the flange 103 may be formed so as to be clamped only by the protruding portions 8. In this case, it is preferable to provide three or more projections 8, and more preferably three to five projections.

In the case a, the spool 100 is held by the holding means 6 so as to hold the flange 103, and is held in a horizontal state in which the center axis thereof is substantially horizontal by the operation of the support pieces 11a and 11b. At this time, the lid 2 fitted to the outside of the container body 1 protects the periphery of the spool 100 and prevents the spool 100 from rattling in the axial direction and the radial direction. Maintain (see FIGS. 2 and 3).

When opening the case a, as shown in FIG. 4, the lid 2 is pulled upward while holding the container body 1 by holding the lower portions 5c on the right and left sides of the cover surface portion 5. After the container main body 1 and the lid 2 are separated in this manner, the user can handle the container main body 1 holding the spool 100, and without touching the spool 100 directly with the spool 10.
0 can be handled. At this time, the holding of the spool 100 with respect to the container body 1 is maintained by the holding means 6 and is not easily released unless the spool 100 is pulled out of the housing space 10. The holding state is a state in which the outer periphery of the flange 102 is held by the holding means 6 and held, and the wire 11 wound around the spool body 101 is held.
No interference occurs with respect to 0 or the inside of the trunk 101. further,
The bonding wire 110 wound around the body 101 of the spool is connected to the protection means 7 including the bottom surface 3 and the cover surface 5.
Can be protected.

When the spool 100 is handled in this state, for example, when the spool 100 is mounted on the spool holder 200 of a wire bonding apparatus, as shown in FIG. The container body 1 and the spool 100 are handled integrally while the flange 103 is gripped from the outside of the container body 1, and the spool 100 is externally fixed to the holder 200 so that the container body 1 is put on the holder 200 (FIG. 7). reference). Next, when the container body 1 is pulled out, the engagement with the flange 103 of the holding means 6 is released, and the spool 100 is mounted on the holder 200.

In the state shown in FIG. 7, the projecting portion such as the spool hooking means attached to the holder 200 can escape to the opening 9, and the projecting portion 300 does not hinder the spool mounting operation. At this time, the opening 1
2, 13 expose the tape stop ends 120, 121 of the flanges 102, 103 so that the tape can be peeled off using a tool such as tweezers.

The above-mentioned container body 1 is formed so that the accommodation space 10 expands toward the open side, and the lid 2 is formed so as to expand toward the lower surface opening portion 20.
If the lids 2 can be stacked, it is possible to reduce the cost of storing and transporting the container body 1 and the lid 2. Further, it is preferable to adopt a structure for improving the hermeticity between the container body 1 and the lid 2. For example, as shown in FIG.
A convex portion 40 is formed around the bottom portion 3 of the container body 1, and a convex portion 41 elastically fitted to the convex portion 40 is provided around the lower surface opening 20 of the lid 2. It is possible to exemplify a configuration in which the main body 1 and the lid 2 are detachably fitted.

By the way, this kind of spool case is collected after use, and is repeatedly used after inspection, washing and drying operations. However, all the corners of the container body 1 and the lid 2 are not less than 1 R (R). With the curved surface, the drainage in the drying process after washing is quickly and reliably performed.

Further, the spool case a of this embodiment can handle the spool 100 by using the outer edge 4a of the side portion 4 of the container body 1 as a gripping portion without forming a gripping means projecting outward. a can be formed as thin as possible, and is particularly useful when used for a thin spool 100 having a small winding amount of the bonding wire 110.

It is preferable that one or both of the container body and the lid be made of a transparent material because the type, standard, and the like of the bonding wire 110 wound on the spool 100 can be confirmed.

For convenience of illustration, the bonding wire 110 is shown to be larger in diameter than the actual one and wound in a single layer around the spool 100. However, the wire 110 is a thin wire having a diameter of 1 mm or less, and Part 101
Needless to say, the winding amount is such that the outermost layer portion does not contact the bottom surface portion 3 and the cover surface portion 5.

As described above, an example of the embodiment of the present invention has been described, but the present invention is not limited to this, and another different one may be used within the scope of the technical idea described in the claims of the present application. Embodiments are also possible.

[0042]

According to the present invention, the spool can be detachably held on the container body or the lid by engaging the holding means provided on the container body or the lid with the outer peripheral edge of the flange. Therefore, the spool can be handled without causing wire damage or the like due to the hand touching the wire surface, and it is possible to cope with various bonding apparatuses without being affected by the length of the spool holder, the presence of the spool hooking means, and the like. It has versatility. Further, since the holding state is maintained by the holding means, even if the worker releases his hand,
It is possible to realize a highly reliable handling operation without fear of the spool falling off. The bonding wire wound around the held spool is protected by the protection means, and the effect of preventing damage to the wire and the like can be obtained more effectively.

(Claim 2) The stability when the spool is accommodated in the case and placed on a work table or the like is increased, and the winding of the bonding wire is effectively prevented from collapsing.

(Claim 3) By using the spool case of the present invention, the spool can be preferably used in this technical field as a handling method capable of handling the spool without directly touching the spool.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view illustrating an example of an embodiment.

FIG. 2 is a front view in a central longitudinal section showing a use state.

FIG. 3 is a sectional view taken along lines (X)-(X) in FIG. 2;

FIG. 4 is a partially cutaway perspective view showing a use state.

FIG. 5 is a perspective view showing a handling state with a lid removed.

FIG. 6 is an enlarged view of a main part of FIG. 5;

FIG. 7 is a perspective view showing a state of attachment to a spool holder.

FIG. 8 is an exploded perspective view illustrating an example of an embodiment.

[Explanation of symbols]

 1: Container body 2: Lid 3: Bottom part 4: Side part 4a: Outer edge of side part 5: Cover part 6: Holding means 7: Protecting means 9: Opening 30, 31: Leg pieces 11a, 11b: Support piece 100 : Spool 101: Body 102, 103: Flange 110: Bonding wire

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3E068 AA33 AB09 AC01 CC01 CD02 EE02 EE15 EE32 3F058 AA04 AB03 AC00 BB19 CA06 DA05 DB05 EB06 GA03 5F044 BB00

Claims (3)

[Claims] 1. A spool case for accommodating a spool around which a bonding wire is wound, comprising a container main body and a lid which are fitted to each other, wherein one of the container main body and the lid is provided outside a flange of the spool. Holding means for detachably engaging the peripheral edge to hold the spool, and protection means for covering around a bonding wire wound around the body of the spool held by the holding means. Spool case for bonding wire. 2. A fall piece for preventing overturning extending outwardly is provided on at least one of the lid and the container body.
The described spool case. 3. A method of handling a spool using the spool case according to claim 1, wherein the holding means holds the spool on a container body or a lid, and handles the spool without directly touching the spool. A method of handling a spool, characterized in that: