CN100533700C - Apparatus and method for mounting electronic component - Google Patents

Abstract

A carrier tape (1) is taken up by a carrier tape take up reel (7) without generating positional shift, even when the carrier tape whereupon an electronic component (12) is mounted by a mounting section (8) is shifted in a width direction, by taking up a spacer tape (4b) with the carrier tape after such shift is eliminated. A spacer tape guide roller (15d) which can set a position change permits the take up position of the spacer tape, which is taken up by the carrier tape take up reel and press-holds the carrier tape, to be in downstream of a carrier tape take up position in a take up direction.

Description

Electronic component mounting device and mounting method

technical field

The present invention relates to an electronic component mounting device and mounting method for mounting an electronic component on a carrier tape unwound from a carrier tape supply reel, and winding the carrier tape together with a spacer tape onto a carrier tape winding reel.

Background technique

For example, in TAB (Tape Automatic Bonding, tape automatic bonding) or COF (ChipOn Film, packaging chips on flexible circuit boards), etc., electronic components such as semiconductor chips are mounted on a carrier tape formed in a film shape. on the terminal section.

FIG. 6 shows a conventional mounting device for mounting electronic components on the carrier tape. This mounting device has a carrier tape supply reel 2 on which a carrier tape 1 is wound. On the carrier tape 1 , as shown in FIG. 7 , a terminal portion 3 having a device hole 3 a and a lead wire 3 b protruding from the device hole 3 a is formed. Therefore, the carrier tape 1 is wound up on the above-mentioned carrier tape supply reel 2 while overlapping the spacer tape 4 a protecting the lead wire 3 b of the terminal portion 3 .

The carrier tape 1 unwound from the carrier tape supply reel 2 is engaged with the carrier tape guide roller 5 a to be guided to the conveyance rail 6 , and is wound up on the carrier tape take-up reel 7 from the conveyance rail 6 . An attachment portion 8 is provided in the middle of the transport rail 6 .

The carrier tape 1 is drawn out from the carrier tape supply reel 2 so that no slack occurs between the carrier tape guide roller 5 a and one end of the transport rail 6 . The amount of slack in the carrier tape 1 is detected and controlled by the first lower sensor 11a and the first upper sensor 11b. That is, if the first lower sensor 11a detects the slack carrier tape 1, the withdrawal of the carrier tape 1 from the carrier tape supply reel 2 is stopped. When the slack of the carrier tape 1 disappears and the carrier tape cannot be detected by the first upper sensor 11 b, the carrier tape 1 is drawn out by the carrier tape supply reel 2 . Thereby, the amount of slack of the carrier tape 1 is controlled within a predetermined range.

In the mounting portion 8 described above, electronic components 12 such as semiconductor chips are mounted on the carrier tape 1 as shown in FIG. 8 . The mounting unit 8 has a mounting table 13 driven in the X, Y directions, and a mounting tool 14 driven in the X, Y, and Z directions.

The spacer tape 4a drawn out from the carrier tape supply reel 2 together with the carrier tape 1 is guided by a pair of spacer guide rollers 15a and 15b, and is wound up on the spacer tape winding reel 16.

When the electronic component 12 is supplied onto the mounting table 13 , the mounting table 13 is positioned below the terminal portion 3 of the carrier tape 1 . Next, the above-mentioned installation tool 14 is driven in a downward direction. Thereby, the lead wire 3b of the terminal portion 3 is bent and connected to the bump 12a of the electronic component 12 .

The carrier tape 1 on which the electronic component 12 is mounted is intermittently conveyed at a predetermined pitch by a conveyance mechanism such as a sprocket (not shown) provided to face the conveyance rail 6 . The carrier tape 1 mounted with the electronic component 12 and transported by the transport mechanism is wound up on the carrier tape winding reel 7 while overlapping the spacer tape 4 b supplied from the spacer tape supply reel 18 . Thereby, the electronic component 12 mounted on the carrier tape 1 is protected by the said spacer tape 4b.

The carrier tape 1 is guided by the carrier tape guide roller 5 b and wound up on the above-mentioned carrier tape winding reel 7 . The spacer tape 4b is guided by the lower spacer tape guide roller 15c and the upper spacer tape guide roller 15d, and is wound around the carrier tape winding reel 7 described above.

After the electronic component 12 is mounted on the carrier tape 1, it is intermittently conveyed by a predetermined length by a conveying mechanism not shown. On the winding side, the slack of the intermittently conveyed carrier tape 1 is detected by the second lower sensor 17a and the second upper sensor 17b.

If the amount of slack becomes more than a predetermined amount and is detected by the second lower sensor 17a, the carrier tape winding reel 7 is driven by the detection signal, and the winding of the carrier tape 1 and the spacer tape 4b is started. When winding starts and the slack decreases, and the carrier tape 1 is not detected by the second upper sensor 17b, the winding of the carrier tape 1 is stopped.

The above-mentioned carrier tape 1 and spacer belt 4b are respectively guided by the above-mentioned carrier tape guide roller 5b and the above-mentioned spacer belt guide roller 15d, and the winding position relative to the above-mentioned carrier tape winding reel 7 is determined, that is, determined and in the same position. The outer peripheral surface of the winding core 7a of the carrier tape winding reel 7 as the outer peripheral surface of the winding when each tape 1, 4b is wound on the carrier tape winding reel 7, or the outer peripheral surface of the winding core 7a already wound on the winding core 7a. The position in the circumferential direction where the outer peripheral surfaces of the belt 1, 4b are in contact.

The above-mentioned winding position when the carrier tape 1 and the spacer tape 4b have been wound on the carrier tape winding reel 7 is a position in contact with the wound spacer tape 4b in the case of the carrier tape 1. The case is the position in contact with the already wound carrier tape 1 .

Patent Document 1 shows a mounting device having the above-mentioned structure.

Patent Document 1: (Patent) Japanese Patent Application Laid-Open No. 6-244246.

As shown in FIG. 6 , the conventional installation device positions the carrier tape guide roller 5 b and the upper spacer tape guide roller 15 d so that the carrier tape 1 and the spacer tape 4 b are wound onto the carrier tape winding reel 7 . The winding position Z at the same time is the same. That is, the carrier tape guide roller 5 b and the upper spacer tape guide roller 15 d are disposed close to the radially downward side of the carrier tape winding reel 7 so that the winding positions Z are the same.

Recently, since a very thin carrier tape 1 is used, the carrier tape 1 may vibrate in the width direction during winding. When the carrier tape 1 is wound around the carrier tape winding reel 7 while vibrating in the width direction, the winding may be misaligned in the width direction of the carrier tape winding reel 7 .

If the winding positions Z of the carrier tape 1 and the spacer tape 4b with respect to the above-mentioned carrier tape winding reel 7 are the same, before the vibration of the width direction of the carrier tape 1 wound on the carrier tape winding reel 7 converges, that is, before the carrier tape 1 The carrier tape 1 is pressed and held by the spacer belt 4 b while the position of the tape 1 is shifted in the width direction, and is wound up on the outer peripheral surface of the carrier tape winding reel 7 .

Therefore, since the carrier tape 1 is wound up on the carrier tape winding reel 7 in a state where the width direction is deviated, the amount of the deviation gradually increases and eventually exceeds the allowable range.

Contents of the invention

The present invention provides a mounting device and a mounting method that can prevent the carrier tape from occurring by winding the spacer tape together with the carrier tape after the vibration has converged even if the carrier tape vibrates in the width direction. Wound onto the carrier tape take-up reel with offset.

That is, the electronic component mounting device of the present invention is used for mounting electronic components on a carrier tape, and is characterized in that it has:

a carrier tape supply reel on which the above-mentioned carrier tape and spacer tape are overlapped;

a spacer tape winding reel for winding the above-mentioned spacer tape drawn out from the carrier tape supply reel together with the above-mentioned carrier tape;

a mounting unit for mounting the electronic component on the carrier tape drawn from the carrier tape supply reel;

The carrier tape winding reel is used to wind the carrier tape on which the electronic components are mounted on the mounting portion;

a spacer tape supply reel for supplying a spacer tape wound overlappingly with the carrier tape when the carrier tape on which the electronic components are mounted is wound by the carrier tape winding reel;

Spacer belt guide rollers for guiding the spacer belt wound onto the above-mentioned carrier tape winding reel;

The positioning mechanism sets the starting position of winding of the spacer tape wound on the carrier tape winding reel and pressing and holding the carrier tape at a position that is lower than that of the carrier tape by changing the position of the spacer tape guide roller. The winding start position is on the downstream side in the winding direction.

In addition, the present invention provides an electronic component mounting method for mounting the electronic component on a carrier tape, characterized in that it has:

The process of pulling out the carrier tape wound on the carrier tape supply reel;

A step of mounting the above-mentioned electronic component on a carrier tape drawn from the above-mentioned carrier tape supply reel;

The process of superimposing a spacer tape on a carrier tape mounted with electronic components and winding it onto a carrier tape take-up reel;

Changing the position of the spacer tape guide roller so that the winding start position of the carrier tape wound on the carrier tape winding reel is set downstream in the winding direction from the winding start position of the carrier tape side process.

Description of drawings

FIG. 1 is a front view showing a schematic configuration of a mounting device according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a carrier tape winding reel for explaining the winding positions of a carrier tape and a spacer tape with respect to the carrier tape winding reel.

Fig. 3 is a partially cutaway side view showing the mounting structure of the upper spacer belt guide roller.

4 is a front view showing a mounting member for mounting an upper spacer belt guide roller according to a second embodiment of the present invention.

5 is a side view showing an image of an attachment hole of an upper spacer belt guide roller according to a third embodiment of the present invention.

Fig. 6 is a front view showing a schematic configuration of a conventional mounting device.

Fig. 7 is an enlarged plan view showing a part of the carrier tape.

Fig. 8 is a diagram for explaining the attachment of the attachment portion.

Detailed ways

Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 to 3 . In addition, the same code|symbol is attached|subjected to the same part as the conventional structure shown in FIG. 6, and description is abbreviate|omitted.

As shown in FIG. 1 , the mounting device of the present invention has an upper spacer tape guide roller 15 d for setting the winding position of the spacer tape 4 b wound on the carrier tape winding reel 7 . The upper spacer tape guide roller 15d is arranged above the carrier tape guide roller 5b that guides the carrier tape 1 wound on the carrier tape winding reel 7, and is provided so that it can be moved up and down by the mounting member 21 as a positioning mechanism. Orientation adjustment.

The mounting member 21 is in the shape of a strip plate, and is disposed on the side of the carrier tape winding reel 7 so that the longitudinal direction is along the vertical direction. As shown in FIG. 3 , a plurality of mounting holes 22 are formed in the mounting member 21 at predetermined intervals in the vertical direction. In addition, the above-mentioned upper spacer belt guide roller 15d is fixed to the mounting hole 22 at a predetermined position by a screw 23 with a washer 23a interposed therebetween.

By installing the above-mentioned upper spacer belt guide roller 15d on the above-mentioned mounting member 21 and disposing it above the above-mentioned carrier tape guide roller 5b, as shown in FIG. The winding position X on the winding core 7 a of the carrier tape winding reel 7 is set on the downstream side in the winding direction of the winding position Y of the carrier tape 1 .

In this way, the winding position X of the spacer tape 4 b is shifted downstream in the winding direction from the winding position Y of the carrier tape 1 . Therefore, when the carrier tape winding reel 7 is rotationally driven to start winding, when the carrier tape 1 touches the winding outer peripheral surface and the carrier tape winding reel 7 rotates by a predetermined angle, the spacer tape 4b is placed on the winding outer peripheral surface. It overlaps with the carrier tape 1 and is wound. That is, the spacer tape 4b is wound up on the carrier tape winding reel 7 after a predetermined time delay from the carrier tape 1 .

Therefore, even if the carrier tape 1 is wound up on the carrier tape winding reel 7 while vibrating in the width direction, the spacer belt 4b presses and holds the carrier tape 1 after the vibration of the carrier tape 1 converges, and the carrier tape 1 is wound. As a result, even if the carrier tape 1 vibrates during winding, it is possible to prevent the carrier tape 1 from being pressed and held by the spacer belt 4 b while being wound up while its position is shifted.

The amount of vibration of the carrier tape 1 when wound on the carrier tape winding reel 7 varies depending on the thickness, width, material (especially flexibility) or weight of the carrier tape 1 .

If the amount of vibration of the carrier tape 1 differs depending on the type, the rotation angle of the carrier tape winding reel 7 required from when the carrier tape 1 is wound on the carrier tape winding reel 7 to when the vibration converges varies.

Therefore, when the type of carrier tape 1 is changed, the mounting position of the above-mentioned upper spacer belt guide roller 15d on the above-mentioned mounting member 21 is changed. Thus, the position where the spacer tape 4b presses and holds the carrier tape 1 wound on the carrier tape winding reel 7, that is, the position of the spacer tape 1 can be changed on the downstream side in the winding direction from the winding position Y of the carrier tape 1. 4b at the winding position X on the tape winding reel 7 .

For example, when the type of the carrier tape 1 is changed to a soft type and the amount of vibration during winding becomes large, the winding position of the spacer tape 4b is changed to be downstream from the initial winding position X shown in FIG. 2 . Side position X1.

As a result, the spacer tape 4b can press and hold the carrier tape 1 when the vibration of the carrier tape 1 wound on the carrier tape winding reel 7 converges.

When the carrier tape 1 is changed to, for example, a rigid type and the amount of vibration is reduced, the winding position of the spacer tape 4b is changed to a position X2 upstream of the initial winding position X.

As a result, the spacer tape 4b can press and hold the carrier tape 1 when the vibration of the carrier tape 1 wound on the carrier tape winding reel 7 converges.

When the vibration of the carrier tape 1 is small, it is conceivable not to set the winding position of the spacer belt 4b at X2 but at X1 on the downstream side of X2. In this case, the carrier tape 1 is pressed and held by the spacer belt 4b not at the time when the vibration converges at its winding position Y, but after being wound from X2 to X1.

Therefore, since the rotation angle from when the carrier tape 1 is wound on the carrier tape winding reel 7 to being pressed and held by the spacer belt 4b becomes large, the carrier tape 1 may be wound on the winding core 7a of the winding reel 7 during this period. Misalignment of the outer peripheral surface. Therefore, it is preferable that the carrier tape 1 is pressed and held by the spacer belt 4 b when the vibration converges.

That is, the mounting position of the upper spacer belt guide roller 15d on the above-mentioned mounting member 21 is set so that even if the magnitude of the vibration varies depending on the type of the carrier tape 1, it is pressed by the spacer belt 4b at the time when the vibration converges. Hold the carrier tape 1 .

Thereby, even if the magnitude of the vibration differs depending on the type of the above-mentioned carrier tape 1, it is possible to reliably prevent the carrier tape 1 from being misaligned during winding.

FIG. 4 is a second embodiment showing a modified example of the mounting member 21 as a positioning mechanism. In this embodiment, long holes 25 are formed on the mounting member 21 instead of the plurality of mounting holes 22 shown in the first embodiment. , the attachment position of the upper spacer guide roller 15d can be changed along the elongated hole 25 .

According to such a structure, the attachment position of the upper spacer belt guide roller 15d can be set steplessly.

FIG. 5 is a third embodiment showing still another modified example of the positioning mechanism. In this embodiment, the upper spacer belt guide roller 15 d is provided on the movable member 26 . The movable member 26 is configured to be movable along a linear guide 27 . A threaded shaft is screwed to the movable member 26 , and the threaded shaft 28 is rotationally driven by a motor 29 .

Therefore, if the threaded shaft 28 is rotationally driven by the motor 29, the movable member 26 can be moved along the linear guide 27, so the position of the upper interval belt guide roller 15d provided on the movable member 26 can be set. . That is, the winding position of the spacer belt 4b can be set.

In addition, in the third embodiment shown in FIG. 5 , the mechanism for driving the movable member 26 may use another driving mechanism such as a pressure cylinder or a linear motor instead of the threaded shaft.

Industrial Applicability

According to the present invention, since the winding position of the spacer tape wound on the carrier tape winding reel is positioned on the downstream side in the winding direction than the winding position of the carrier tape, the carrier tape is wound up on the carrier tape winding reel. Wind the spacer tape with a delay. Therefore, since the spacer tape is wound after the vibration of the carrier tape has converged, the carrier tape can be wound without positional deviation.

Furthermore, it is possible to set the winding position of the spacer tape. Therefore, even if the magnitude of the vibration differs depending on the mass of the carrier tape, the carrier tape can be reliably wound without misalignment.

Claims (5)

1. A mounting device for electronic components, used for mounting electronic components on a carrier tape, characterized in that it has: a carrier tape supply reel on which the above-mentioned carrier tape and spacer tape are overlapped; a spacer tape winding reel for winding the above-mentioned spacer tape drawn out from the carrier tape supply reel together with the above-mentioned carrier tape; a mounting unit for mounting the electronic component on the carrier tape drawn from the carrier tape supply reel; The carrier tape winding reel is used to wind the carrier tape on which the electronic components are mounted on the mounting portion; a spacer tape supply reel for supplying a spacer tape wound overlappingly with the carrier tape when the carrier tape on which the electronic components are mounted is wound by the carrier tape winding reel; Spacer belt guide rollers for guiding the spacer belt wound onto the above-mentioned carrier tape winding reel; The positioning mechanism sets the starting position of winding of the spacer tape wound on the carrier tape winding reel and pressing and holding the carrier tape at a position that is lower than that of the carrier tape by changing the position of the spacer tape guide roller. The winding start position is on the downstream side in the winding direction. 2. The electronic component mounting device according to claim 1, wherein the positioning mechanism is a mounting member formed with a plurality of mounting holes, and the spacer belt guide roller is mounted and fixed at a predetermined position of the mounting member. in the mounting holes above. 3. The mounting device for electronic components according to claim 1, wherein the positioning mechanism is a mounting part formed with a long hole, and the spacer belt guide roller is mounted and fixed along the length direction of the long hole. Specifies the location. 4. The installation device of electronic components according to claim 1, characterized in that, the positioning mechanism comprises: a linear guide; a movable member; and a drive mechanism for driving the movable member along the linear guide. 5. A method for installing an electronic component, for installing the electronic component on a carrier tape, characterized in that it has: The process of pulling out the carrier tape wound on the carrier tape supply reel; A step of mounting the above-mentioned electronic component on a carrier tape drawn from the above-mentioned carrier tape supply reel; The process of superimposing a spacer tape on a carrier tape mounted with electronic components and winding it onto a carrier tape take-up reel; Changing the position of the spacer tape guide roller so that the position at which winding of the spacer tape wound on the above-mentioned carrier tape winding reel starts is set downstream in the winding direction from the position at which winding of the carrier tape starts. side process.

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