JP2000269686A - Tape feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tape feeder that can cope with many kinds of tapes, and has improved general versatility. SOLUTION: In a tape feeder 5 for successively supplying electronic components to a pickup position by pitch feeding of a tape 12 that retains the electronic components, a tape feed pitch can be varied by changing the reciprocating stroke of a link member 23 of a link mechanism 14 for intermittently rotating a sprocket member 16 for the pitch feeding of the tape 12 by a stroke adjustment member 23. Also, the width dimension of an opening for picking up electronic components being provided at a cover member 18 for preventing jump-up towards the upper portion of an empty tape after picking up the electronic components in front of a pickup position and a gap in a direction for feeding the tape are varied, thus coping with many types of tapes by the same tape feeder 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a tape feeder which is mounted on an electronic component mounting apparatus and supplies an electronic component held by a tape to a pickup position of a transfer head.

[0002]

2. Description of the Related Art A tape feeder is known as an electronic component supply device in an electronic component mounting apparatus. This tape feeder supplies an electronic component to a pickup position by a transfer head by intermittently feeding a tape holding the electronic component. There are various types and sizes of electronic components held and supplied on the tape, and the material and width of the tape and the feeding pitch at the time of feeding the tape differ depending on the type and size.

[0003]

Therefore, conventionally, it was necessary to prepare a tape feeder for each tape type. In addition, the tape feeder itself must be replaced every time the type is changed, which requires a lot of trouble and time for the type change operation, and requires a large number of tape feeders, resulting in an increase in equipment cost.

Accordingly, an object of the present invention is to provide a tape feeder which can cope with various kinds of tapes and has excellent versatility.

[0005]

According to a first aspect of the present invention, there is provided a tape feeder for sequentially feeding electronic components to a pickup position of a transfer head by feeding a tape holding electronic components at a pitch. A frame member on which the tape travels on the upper surface, a tape feed mechanism for feeding the tape at a pitch, and a cover member for preventing a vacant tape from jumping up after an electronic component pickup in front of the pickup position. The width of the opening for the electronic component pickup provided in the cover member and / or the gap in the tape feed direction can be changed by the width changing means and the gap changing means, respectively.

According to a second aspect of the present invention, there is provided a tape feeder for sequentially feeding electronic components to a pickup position of a transfer head by feeding a tape holding electronic components at a pitch. A sprocket member having an engagement claw for engaging the provided engagement hole; a tape feed mechanism for intermittently rotating the sprocket member; and a stroke change for changing a reciprocating stroke of a link member constituting the tape feed mechanism. The tape feed pitch is variable by changing the reciprocating stroke.

According to the present invention, the same tape can be obtained by changing the width and / or gap of the electronic component pickup opening provided in the cover member and by changing the tape feed pitch. A variety of tapes can be handled by the feeder.

[0008]

Embodiments of the present invention will now be described with reference to the drawings. 1 is a plan view of an electronic component mounting apparatus according to an embodiment of the present invention, FIG. 2 is a side view of the tape feeder, FIG. 3 is a partial perspective view of the tape feeder, and FIG. 4 is a front cover of the tape feeder. FIG. 5 is an exploded perspective view, FIG. 5 is an explanatory view of adjusting a tape feed pitch of the tape feeder, and FIG.
7A, 7B, and 7C are partial cross-sectional views of the tape feeder, and FIGS. 7A, 7B, and 7C are perspective views of a shape adjusting member of the tape feeder.

First, an electronic component mounting apparatus to which a tape feeder is mounted will be described with reference to FIG. In FIG. 1, a transport path 2 is provided at the center of the base 1, and the transport path 2 transports the substrate 3 and positions it at the electronic component mounting position. On both sides of the transport path 2, supply units 4 for electronic components are arranged, and a large number of tape feeders 5 are arranged in the supply unit 4 in parallel. The tape feeder 5 sequentially feeds the electronic components to the pickup position 5a of the transfer head by feeding the tape holding the electronic components at a pitch.

A Y-axis table 7A is provided on both ends of the upper surface of the base 1.
And a guide table 7B, and an X-axis table 6 is provided on the Y-axis table 7A and the guide table 7B. The X-axis table 6 has a transfer head 8
Are mounted, and the transfer head 8 is provided with a suction nozzle 8a (see FIG. 2) for sucking an electronic component. By driving the X-axis table 6 and the Y-axis table 7A, the transfer head 8 moves horizontally, picks up an electronic component from the pickup position 5a, and moves on an imaging unit 9 provided on the side of the transport path 2. Then, the electronic component is mounted on the substrate 3 after detecting the displacement of the electronic component.

Next, the tape feeder 5 will be described with reference to FIG. In FIG. 2, a frame member 13 constituting a main body of the tape feeder 5 is supported by a base member 10. By fixing the base member 10 on a mounting base of the supply section 4 (FIG. 1), the tape feeder 5 is provided with electronic components. It is mounted on a mounting device. A supply reel 11 that accommodates a tape 12 holding electronic components in a wound state is disposed behind the frame member 13, and the tape 12 sent from the supply reel 11 runs on the upper surface of the frame member 13. That is, the upper surface 13a (see FIG. 3) of the frame member 13 is a running path of the tape 12. Tape 1
The engaging holes provided at a constant pitch on the front end of the sprocket member 16 supported by the front end of the frame member 13
a (see FIG. 3), and the sprocket member 16
The tape 12 is pitch-fed by intermittent rotation by a tape feeding mechanism described below.

Next, the tape feeding mechanism will be described. The frame member 13 is provided with a link mechanism 14 described below, and the link member 2 at one end of the link mechanism 14 is provided.
0 is reciprocated by a rod 15 a of a cylinder 15 provided in the supply unit 4 separately from the tape feeder 5, whereby the link member 31 at the other end of the link mechanism 14 is moved.
The sprocket member 16 connected via a ratchet mechanism intermittently rotates. Thereby, the sprocket member 16
The tape 12 engaged with the frame member 13 is fed pitchwise along the upper surface of the frame member 13. That is, the link mechanism 14 and the cylinder 15 are a tape feed mechanism for intermittently rotating the sprocket member 16.

Next, the link mechanism 14 will be described. The link mechanism 14 includes five link members 20, 23, 28, 2
9 and 31 are fixed by three fixed fulcrums 21, 27 and 32. Link members 20 and 23,
Link members 23 and 28, link members 28 and 2
9, each of the link members 29 and 31 is a free fulcrum 2
2, 26, 30. A spring 25 is connected to the link member 28, and the link member 28 is urged in the direction of arrow a.

The lower end of the link member 20 is moved in the direction of the arrow b by protruding the rod 15a of the cylinder 15 so as to be connected to the sprocket member 16 via the link members of the link mechanism 14 via the ratchet mechanism. The link member 31 rotates around the fixed fulcrum 32 in the direction of arrow d, and when the rod 15a is retracted (arrow b), the link member 31 rotates in the direction of arrow e by the urging force of the spring 25. When the link member 31 rotates in the direction of the arrow d, this rotation is not transmitted to the sprocket member 16, but only the rotation in the direction of the arrow e is transmitted to the sprocket member 16 by the ratchet mechanism. That is, the rod 15a is retracted and the sprocket member 16
Is rotated in the direction of arrow e by the urging force of the spring 25, the tape 12 is fed.

A key-shaped protrusion 23a is provided at an intermediate portion of the link member 23, and an L-shaped stroke adjusting member 24 is disposed facing the moving direction of the protrusion 23a. By changing the mounting position and mounting posture of the stroke adjusting member 24, the reciprocating stroke of the link member 23 is changed, and thus the rotation angle transmitted to the sprocket member 16 via the link member 31 is changed to change the tape 12. Can be changed. That is, the protrusion 23a and the stroke adjusting member 24 constitute a stroke changing unit.

The method of changing the stroke will be described with reference to FIG. As shown in FIG.
Is provided with a stroke adjusting member 24.
And two contact surfaces 23b and 23c that contact the
The contact surfaces 23b and 23c have different contact positions in the stroke direction. Further, the stroke adjusting member 24 can use the horizontal dimensions of l1 and l2 depending on the mounting posture.

Accordingly, the posture of the stroke adjusting member 24 mounted along the end face of the side plate 32 and the contact surfaces 23b, 23 with which the stroke adjusting member 24 abuts.
By combining c, (a), (b),
(C), four strokes p1, p2 shown in (d)
p3 and p4 can be set respectively. Here, the stroke adjusting member 2 is set so that p2, p3, and p4 are twice, three times, and four times the reference stroke p1, respectively.
4 and the positions of the contact surfaces 23b and 23c are set.

Although the example of adjusting the stroke of the link member 23 is shown here, the stroke of any of the other link members constituting the link mechanism may be adjusted. The stroke 15a itself may be adjusted. By changing the reciprocating stroke of the link member of the tape feed mechanism in this manner, the tape feed pitch can be varied, and the same tape feeder can cope with various types of tapes, thereby improving versatility.

The front end of the upper surface of the frame member 13 is at a position where electronic components are picked up by the suction nozzle 8a. The tape 12 which has been fed while traveling on the upper surface of the frame member 13 is guided upward by the cover member 18 and covers the upper surface of the electronic component of the tape 12 before the pickup position by the suction nozzle 8a. Is peeled off and wound up by the take-up reel 17.

Next, the cover member 18 will be described. As shown in FIG. 3, a front cover member 18b is provided at a front portion of the cover member 18, and the front cover member 18b prevents the empty tape after the electronic components are picked up from jumping upward. The front end of the cover member 18 is bent downward to form a locking portion 18a, and the locking portion 18a is locked by a locking member 33 provided on the frame member 13, so that the cover member 18 As shown in FIG.
3 is pressed against the frame member 13 by the urging force of a spring member (not shown) provided on the frame member 3.

FIG. 3 shows that the cover member 18 is connected to the frame member 13.
2 shows a state in which it has been removed from. As shown in FIG.
The cover member 18 is provided with an opening 18e for picking up electronic components.
The electronic components held on the tape 12 that has traveled along the line a.
It is taken out through the opening 18e.

The cover member 18 includes two right and left side members 18.
a, a front cover member 18b and a shutter member 18c. These members are connected to bolt holes 18 as shown in FIG.
The cover member 18 is assembled by fastening a bolt 18g to h. Bolt hole 18 of front cover member 18b and shutter member 18c
The intervals w1 and w2 of h are set according to the target tape 12. That is, by selecting the front cover member 18b and the shutter member 18c having the predetermined intervals w1 and w2, the width dimension W of the opening 18e can be set to a desired dimension using the common side member 18a. That is, the front cover member 18b and the shutter member 18c are width changing means for changing the width of the opening 18e.

The shutter member 18c is connected to the side member 18a.
The mounting hole 18f to be fixed to the
By moving the fastening position of 8g in the mounting hole 18f, the gap L in the tape feeding direction of the opening 18e can be adjusted according to the target tape. That is, the mounting hole 18f and the bolt 18g serve as gap changing means for changing the gap size of the opening 18e. By using such a width changing means and a gap changing means, only by replacing the front cover member 18b and the shutter member 18c, which are simply shaped members, it is possible to apply to various kinds of tapes having different width dimensions and feed pitches. Same cover member 18
Can be used.

Referring again to FIG. 3, two protrusions 13b are provided on both sides of the upper surface of the front end of the frame member 13, and a groove 13c in the tape feed direction is provided between the protrusions 13b. Is formed. A block 36 is mounted in the groove 13c by a bolt 39. A side plate 35 is provided outside the sprocket member 16 on the side surface of the frame member 13, and the upper surface of the side plate 35 forms a part of a receiving surface of the cover member 18.

FIG. 6 is a sectional view taken along the line AA of FIG. 3. FIGS. 6 (a), 6 (b) and 6 (c) show different types of blocks 36, 37 and 38 mounted on the groove 13c. FIG. These blocks 36, 37 and 38
Are selected corresponding to different types of tapes 12A, 12B and 12C. The tape 12A is a paper tape,
The tapes 12B and 12C respectively hold the electronic components P
This is an embossed tape having an embossed shape different depending on the shape of P1 and P2.

FIGS. 7A, 7B and 7C show these blocks 36, 37 and 38, respectively. The block 36 shown in FIG. 7A is a rectangular parallelepiped block having a width dimension b and a height dimension h corresponding to the width and depth of the groove 13c, and a cushioning material 36a is mounted on the upper surface. ing. The block 36 is fixed to the frame member 13 by a bolt hole 36b. As shown in FIG. 6A, when the block 36 is mounted on the groove portion 13c, the cross section of the frame member 13 has a flat upper surface and a flat surface. Paper tape 12
It has a cross-sectional shape suitable for A.

FIGS. 7 (b) and 7 (c) show a block 37 having notched cross sections of different widths b1 and b2, respectively.
By fixing these blocks 37, 38 to the frame member 13 with bolt holes 37a, 38a, the width b1 corresponding to the embossed tapes 12B, 12C using the effective groove size of the groove portion 13c is used. , B2
Can be set to

As described above, the groove portion 13 of the frame member 13
By mounting the blocks 36, 37, 38 having shapes and dimensions different from those of FIG. It can be.
Therefore, the blocks 36, 37 and 38 are shape adjusting members for adjusting the cross-sectional shape. Accordingly, even when different types of tapes are used, it is not necessary to replace the entire tape feeder, and it is possible to deal with various types of tapes only by performing a changeover operation of replacing blocks, which are small components that are easy to mount. In addition, the block for shape adjustment is placed at a predetermined position of the frame member 13 (for example, the storage portion 40 provided on the side surface of the rear end portion of the frame member 13 shown in FIG. 1).
In this case, the necessary blocks can be quickly taken out at the time of replacement, and the working efficiency can be improved.

Further, as shown in FIG.
(The same applies to (b) and (c)), and the lower surface of the shutter member 18c of the cover member 18 is provided with steps 13d, 3 provided on the upper surfaces of the frame member 13 and the side plate 35.
5a. Therefore, the pressing force F for pressing the entire cover member 18 against the frame member 13 is:
It is supported by the step portions 13d and 35a, and the pressing force is not directly applied to the tape 12A.
That is, the step portions 13d and 35a are pressing force supporting portions. This prevents the tape 12A from being restrained by an excessive pressing force, thereby preventing an increase in tape feeding resistance and reducing the load on the tape feeding mechanism. Therefore, an excessive urging force is not required for the spring 25 which is a driving source of the tape feed, and the life of these components can be extended since the load applied to the mechanical components is reduced.

[0030]

According to the present invention, the width and / or the gap of the opening for the electronic component pickup provided in the cover member for covering the tape at the pickup position of the electronic component are made variable, so that the tape feeding is also possible. Since the tape feed pitch is variable by changing the reciprocating stroke of the link member of the mechanism, the same tape feeder can handle many types of tapes, improving versatility and reducing equipment costs. it can.

[Brief description of the drawings]

FIG. 1 is a plan view of an electronic component mounting apparatus according to an embodiment of the present invention.

FIG. 2 is a side view of the tape feeder according to the embodiment of the present invention.

FIG. 3 is a partial perspective view of the tape feeder according to the embodiment of the present invention;

FIG. 4 is an exploded perspective view of a front cover of the tape feeder according to the embodiment of the present invention.

FIG. 5 is an explanatory diagram of a tape feed pitch adjustment of the tape feeder according to the embodiment of the present invention.

6A is a partial cross-sectional view of a tape feeder according to one embodiment of the present invention. FIG. 6B is a partial cross-sectional view of a tape feeder according to one embodiment of the present invention. Partial sectional view of feeder

7A is a perspective view of a shape adjusting member of the tape feeder according to one embodiment of the present invention; FIG. 7B is a perspective view of a shape adjusting member of the tape feeder according to one embodiment of the present invention; 1 is a perspective view of a shape adjusting member of a tape feeder according to an embodiment.

[Explanation of symbols]

 Reference numeral 3 Substrate 4 Supply unit 5 Tape feeder 8 Transfer head 8a Suction nozzle 12 Tape 13 Frame member 14 Link mechanism 16 Sprocket member 18 Cover member 18b Front cover member 18c Shutter member 23 Link member 24 Stroke adjusting member

Claims (2)

[Claims] 1. A tape feeder for sequentially feeding electronic components to a pickup position of a transfer head by feeding a tape holding electronic components at a pitch, comprising: a frame member on which the tape runs on an upper surface; And a cover member for preventing the empty tape after the electronic component pickup from jumping upward in front of the pickup position, and provided for the electronic component pickup provided on the cover member. A tape feeder characterized in that the width of the opening and / or the gap in the tape feed direction are variable by the width changing means and the gap changing means, respectively. 2. A tape feeder for sequentially feeding electronic components to a pickup position of a transfer head by feeding a tape holding electronic components at a pitch, wherein the tape feeders are provided with engaging holes provided at a constant pitch in the tape. A sprocket member having an engaging claw to be engaged; a tape feed mechanism for intermittently rotating the sprocket member; and a stroke changing means for changing a reciprocating stroke of a link member constituting the tape feed mechanism. A tape feeder characterized in that a tape feed pitch is variable by changing a dynamic stroke.