JP2000252689A - Tape feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a tape feeder of a double type which is compact and efficient in workability. SOLUTION: In a tape feeder, which pitch-feeds a tape-retaining electronic components and in sequence supplies the electronic components to a pick-up position, this tape feeder comprises two sprocket member 13 arranged in the same axial axis at a front end part of a frame member 12, two supply reels mounted on a supply reel retaining part, two winding reels which are arranged symmetrically on both faces of a plate-like retaining member erected in the frame member 12 and wind a cover tape peeled off from the tape, and a guide member for preventing error-mounting of the two tapes supplied from the two supply reels. Thus, making the width dimension compactness is realized, and further by error-mounting preventing means is provided, whereby workability at mounting the tape can be enhanced.

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. In this tape feeder,
The tape holding the electronic components is supplied in a state wound around a supply reel, and the supply reel is set on a holder provided at the rear end of the tape feeder. A cover tape for covering the electronic component is adhered to the upper surface of the tape, and the cover tape is peeled off on the near side of the pickup position of the electronic component. The stripped cover tape is collected by a take-up reel provided on the upper part of the frame.

[0003]

In order to reduce the size of the electronic component mounting apparatus, the same tape feeder is used to reduce the arrangement pitch of the tape feeders.
A double type tape feeder for supplying a tape of a book has been used. In this case, it is necessary to provide two supply reels and two take-up reels on the same tape feeder. In this case, since two supply reels and a take-up reel must be arranged within the limited width dimension, consideration must be given to the arrangement position, the attachment / detachment of these reels, and the workability when attaching the tape. However, the conventional double type tape feeder does not always satisfy these conditions.

Accordingly, an object of the present invention is to provide a double type tape feeder which is compact and has good workability.

[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 first sprocket member and a second sprocket member which are provided at the same axis with engaging claws for engaging with engaging holes provided at a constant pitch in the tape; a first sprocket member and a second sprocket member; A sprocket member which is pivotally supported at its front end and whose upper surface is the tape travel path; a tape feed mechanism which intermittently rotates the first sprocket member and the second sprocket member; A first take-up reel and a second take-up reel, which are symmetrically disposed on both sides of the provided plate-like holding member and take up a cover tape peeled off from the tape. And the take-up reel, and a take-up mechanism for causing the take-up operation to the first take-up reel and a second take-up reel is driven by the tape feed mechanism.

A tape feeder according to a second aspect is the tape feeder according to the first aspect, wherein a one-way clutch that transmits rotation in only one direction is used for the winding mechanism.

According to a third 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, wherein the tape is fed to the tape at a constant pitch. A first sprocket member and a second sprocket member which are provided at the same axial position with an engagement claw that engages with the provided engagement hole, and a front end portion of the first sprocket member and the second sprocket member; A frame member whose upper surface is the tape traveling path, a tape feed mechanism for intermittently rotating the first sprocket member and the second sprocket member, and a rear end of the frame member. A first supply reel and a second supply reel supported by the holding member and supplying the tape, and a tape supplied from the first supply reel and a second supply reel. With a erroneous attachment prevention means for preventing the tape mounting errors lead to a predetermined side travel path of each the tape fed the frame member from a supply reel.

According to the present invention, the take-up reel for the cover tape is disposed symmetrically on both sides of the plate-like holding member on the frame member, thereby realizing compactness.
The erroneous mounting preventing means for guiding the tape supplied from the supply reel and the second supply reel to prevent erroneous mounting of the tape can improve workability at the time of mounting.

[0009]

Embodiments of the present invention will now be described with reference to 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 perspective view of the tape feeder, FIG. 3A is a side view of a supply reel holding unit of the tape feeder, and FIG. b) is a perspective view of a supply reel of the tape feeder, FIG. 4 is an explanatory view of a link mechanism of the tape feeder, FIG. 5 is a partial perspective view of the tape feeder, and FIG.
FIG. 6 is a perspective view of a take-up reel of the tape feeder, and FIG.
(B) is a sectional view of a take-up reel of the tape feeder,
FIGS. 7A, 7B, and 7C are explanatory diagrams of the winding operation, and FIGS. 8A and 8B are explanatory diagrams of the operation of the shutter mechanism.

First, an electronic component mounting apparatus to which a tape feeder is mounted will be described with reference to FIG. In FIG. 1, a transfer path 2 is provided at the center of the base 1, and the transfer path 2 transfers the board 3 and positions the board 3 at the electronic component mounting position. On both sides of the transport path 2, electronic component supply units 4 are provided, and the supply unit 4 includes a large number of tape feeders 5.
Are arranged. 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 sides 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
Is mounted, and the transfer head 8 is provided with a suction nozzle 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 pick-up position 5a, and moves onto an imaging unit 9 provided on the side of the transport path 2. . Then, after detecting the displacement of the electronic component, the displacement is corrected and the electronic component is mounted on the substrate 3.

Next, the overall structure of the tape feeder 5 will be described with reference to FIG. In FIG. 2, the tape feeder 5 includes a supply reel holding unit 10, a take-up reel holding unit 30, and a tape feeding mechanism unit 20, and these units are connected to a frame member 12. The frame member 12 is supported by the base member 11, and the tape feeder 5 is mounted on the supply unit 4 by mounting the base member 11 on the supply unit 4 shown in FIG.

A supply reel on which a tape holding electronic components is wound is mounted on the supply reel holding unit 10. The tape sent from the supply reel includes a sprocket member 13.
The sprocket member 13 is intermittently rotated in a state in which the engagement holes are engaged, whereby the tape is fed on the frame member 12 at a pitch. The intermittent rotation of the sprocket member 13 is performed by driving the link member 14 at the other end by reciprocating the link member 15 at one end of the link mechanism provided in the tape feed mechanism 20 in the direction of the arrow by an external driving means.

Above the sprocket member 13, the tape is pressed against the frame member 12 by the cover member 16, and the electronic components are picked up by the suction nozzle 8a through the opening 16a provided in the cover member 16. Then, the cover tape adhered to the tape is peeled off just before the pickup position, folded back, and taken up by the take-up reel of the take-up reel holding unit 30.

Next, referring to FIG.
Will be described. As shown in FIG. 3A, a holding plate 17 is fixed to a rear end of the frame member 12, and supply reels 18A and 18B around which a tape T holding electronic components is wound are provided on side surfaces of the holding plate 17. Are mounted vertically. Supply reel 18A, 18
The tape T fed from B is both guided to the upper surface of the frame member 12. Since a curved plate-like guide member 19A is provided on the side surface of the holding plate 17 so as to partition between the supply reel 18A and the supply reel 18B, the tape T supplied from the supply reel 18A is supplied. Reel 18
There is no intersection with the tape T fed from B.

A partition plate 19B is provided upright on the upper surface of the frame member 12, and a baffle plate 19D is provided on the top of the guide member 19A, and a folded portion 19E is provided on the upper portion of the partition plate 19B. Supply reel 18A, 1
The tape T fed from 8B is always guided to the upper surface of the predetermined frame member 12, so that the two tapes T do not intersect and mix up with each other. Therefore, the guide member 1
9A and the partition plate 19B are erroneous mounting prevention means for preventing erroneous mounting of the tape T.

Next, referring to FIG.
Will be described. The tape feed mechanism 20 converts the reciprocating motion of the rod 21 a of the cylinder 21 provided in the supply unit 4 of the electronic component mounting apparatus into intermittent rotation of the sprocket member 13. As shown in FIG. 4, the tape feed mechanism 20 includes three fixed fulcrums 22, 23, 24 and four free fulcrums 25, 26, 27, 28, and link members 15, 29, 32, 3
A six-bar linkage composed of 3 and 14 is provided.

In FIG. 4, the rod 21 of the cylinder 21
When the lower end 15a of the link 15 is moved in the direction of the arrow a by protruding the link a, the link 14 rotates in the direction of the arrow c.
When the rod 21a is retracted, the link 32 moves in the direction of arrow d by the urging force of the spring 31, and the link 14 rotates in the direction of arrow e. At this time, only the rotation in the direction of arrow e is transmitted to the sprocket member 13 by the ratchet mechanism provided on the sprocket member 13, and the tape is pitch-fed by the rotation of the sprocket member 13. This six-bar linkage has no sliding part that is inevitably generated in a configuration in which two conventional four-bar linkages are combined, and is excellent in transmission efficiency of reciprocating motion. Therefore, the spring 31 and the cylinder 21
Can be reduced, the wear of each part of the mechanism can be reduced, and the life of the mechanical parts can be extended.

A link member 34 is connected above the fixed fulcrum 23 of the link member 32 by a free fulcrum 35, and the cover member 16 is connected to the link member 34 via a free fulcrum 36. Therefore, the cover member 16 reciprocates in conjunction with the tape feeding operation by the tape feeding mechanism. At this time, the spring 3
The urging force of 8 pushes the cover member 16 downward. Thus, the tape is guided upward by the cover member 16.

As shown in FIG. 5, the front end of the frame member 12 is composed of a main frame 12A and a sub-frame 12B, and the main frame 12A and the sub-frame 12B are respectively provided with a first sprocket member 13
A, The second sprocket member 13B is pivotally supported at the same axis position. The first sprocket member 13A and the second sprocket member 13B are individually provided with tape feeding mechanisms 20A and 20B, respectively, and the tapes fed from the first supply reel 18A and the second supply reel 18B described above. T is individually pitch-fed.

In the above configuration, the first sprocket member 13A and the second sprocket member 13B are individually supported by the shaft members forming the fixed fulcrum 24, respectively. Therefore, in the conventional double type tape feeder. Processing parts such as ancillary parts and fitting parts required when two sprocket members are supported by a common shaft member can be omitted, and the shaft supporting structure can be simplified.

Next, the take-up reel holding section 30 will be described with reference to FIG. The plate 40 which is a plate-like holding member shown in FIG. 6A is a frame member 12 (see FIG. 2).
The first take-up reel 41A and the second take-up reel 41B are symmetrically arranged on both sides of the plate 40. A first take-up reel 41A,
The second take-up reel 41B takes up and collects the cover tape T2 that is attached to the above-described tape T and peeled off from the tape T just before the pickup position of the electronic component.

FIG. 6B shows a cross section of the take-up reel holding section 30. The first take-up reel 41A and the second take-up reel 41B on both sides of the plate 40 are inner disk portions 44A and 44B, respectively. And the outer disk portions 43A and 43B.
A and 43B have a one-way clutch mechanism 4
5A and 45B are built in.

From the one-way clutch mechanisms 45A and 45B, levers 42A and 46A and levers 42B and 46B extend in both left and right directions, respectively. One end of each of the levers 46A and 46B is urged in the direction of the arrow by a spring 47 connected to the plate 40, and the lever 42 is connected to the link member 32 (see FIG. 4) via a spring 49 (see FIG. 7). . Lever 42, spring 47 and one-way clutch mechanism 45A, 45
B is a winding mechanism driven by the tape feeding mechanism to cause the first winding reel 41A and the second winding reel 41B to perform a winding operation.

The winding operation by the winding reel 41 and the operation of the shutter mechanism interlocked with the winding operation will be described below with reference to FIGS. The shutter mechanism opens and closes a specific portion above the tape T by reciprocating movement of a shutter member 16b at the rear of the cover member 16. FIG. 7A shows a state in which the tape feed mechanism unit 20 has stopped, and accordingly, the winding mechanism that is linked to this operation has also stopped. In FIG. 7, the shutter member 16b is drawn by extracting only an edge portion provided on the rear side of the opening 16a shown in FIG.

The electronic component P held by the tape T is attached to the main tape T1 so as to cover the upper part of the electronic component P.
The cover tape T2 folded back by the link member 32
It is guided by a movable roller 51 provided on the plate 40 (see FIG. 4) and a fixed roller 50 provided on the plate 40 and wound on a take-up reel 41. In this state,
The levers 42 and 46 are biased by springs 49 and 47, respectively, and are in a balanced state.

FIG. 7B shows a state in which the rod 21a of the cylinder 21 shown in FIG. 4 is projected. At this time, the link member 32 shown in FIG. 4 moves to move the lever 42 downward via the spring 49, whereby the rotation is transmitted to the take-up reel 41 via the one-way clutch mechanism 45. As a result, the cover tape T2 is taken up by the take-up reel 41, and at this time, the shutter member 16 moves backward in conjunction with
The cover tape T2 is partially peeled off, and the electronic component P in this portion is exposed. Further, at this time, the movable roller 51 provided on the link member 32 moves, so that the cover tape T2 is loosened.

FIG. 7C shows the rod 2 of the cylinder 21.
1 a shows a state in which the link member 32 is returned to the original position by the urging force of the spring 31. At this time, the lever 42 connected to the spring 49 connected to the link member 32 also returns to the original position, but the movement of the lever 42 is not transmitted to the take-up reel 41 by the built-in one-way clutch mechanism, and The reel 41 remains stopped. That is, the one-way clutch mechanism transmits rotation in only one direction. By using such a one-way clutch mechanism, the durability can be improved as compared with a conventional one using a ratchet mechanism, and a compact tape winding mechanism with a small number of parts can be realized.

The tape T is pitch-fed by the intermittent rotation of the sprocket member 13 by the operation of the link member 32, and at the same time, the shutter member 16b
Is an electronic component P that is exposed after the cover tape T2 is peeled off.
Move forward with the upper part of the camera covered. At this time, FIG.
In (b), the slack generated in the cover tape T2 is the movement stroke of the shutter member 16b.

As shown in FIG. 8, the shutter member 16b is integrally formed with a front cover member 16c for preventing the empty tape T1 from jumping upward after picking up electronic components in front of the opening 16a. And shutter member 16
The front cover member 16c performs reciprocating motion in conjunction with the reciprocating motion. The opening 16 d is an opening for relief provided at the position of the engaging claw of the sprocket member 13. FIG. 8A shows the state shown in FIG. 7B and FIG.
(B) corresponds to the state shown in FIG. 7 (c).

At this time, the gap dimension B of the opening 16a is always constant, and is kept at the minimum gap required for picking up electronic components. For this reason, a problem that occurred when the conventional front cover member and the shutter member were separately provided, that is, the front cover member was always at the fixed position and the gap size of the opening changed due to the reciprocating movement of the shutter member. Therefore, an unstable state in which the tape is partially turned upward during the pitch feed of the tape does not occur. Therefore, it is possible to stably supply the electronic components to the pickup position without causing any trouble such as jumping out of the electronic components held on the tape or occurrence of displacement.

[0032]

According to the present invention, the take-up reel for the cover tape is disposed symmetrically on both sides of the plate-like holding member on the frame member, so that the tape feeder can be made compact. Since the erroneous mounting preventing means for guiding the tape supplied from the supply reel and the second supply reel to prevent erroneous mounting is provided, the workability at the time of mounting the tape can be improved.

[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 perspective view of a tape feeder according to an embodiment of the present invention.

FIG. 3A is a side view of a supply reel holding unit of the tape feeder according to one embodiment of the present invention. FIG. 3B is a perspective view of a supply reel of the tape feeder according to one embodiment of the present invention.

FIG. 4 is an explanatory diagram of a link mechanism of the tape feeder according to the embodiment of the present invention;

FIG. 5 is a partial perspective view of the tape feeder according to the embodiment of the present invention.

6A is a perspective view of a take-up reel of a tape feeder according to an embodiment of the present invention. FIG. 6B is a cross-sectional view of a take-up reel of the tape feeder according to an embodiment of the present invention.

7A is a diagram illustrating a winding operation according to an embodiment of the present invention. FIG. 7B is a diagram illustrating a winding operation according to an embodiment of the present invention. FIG. 7C is a diagram illustrating a winding operation according to an embodiment of the present invention. Illustration of picking operation

FIG. 8A is a diagram illustrating the operation of a shutter mechanism according to an embodiment of the present invention. FIG. 8B is a diagram illustrating the operation of a shutter mechanism according to an embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 5 tape feeder 10 supply reel holding unit 12 frame member 13 sprocket member 16 cover member 18A first supply reel 18B second supply reel 20 tape feeding mechanism unit 30 take-up reel holding unit 41A first take-up reel 41B second Take-up reel 42, 42A, 42B Lever 45A, 45B One-way clutch mechanism 49 Spring

Claims (3)

[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, wherein the tape feeders are provided with engaging holes provided at a constant pitch in the tape. A first sprocket member and a second sprocket member which are provided with engaging claws to be engaged and are disposed at the same shaft position; and a first sprocket member and a second sprocket member which are pivotally supported at a front end and have an upper surface. A frame member which is a path for the tape, a tape feed mechanism for intermittently rotating the first sprocket member and the second sprocket member, and a plate-like holding member erected on the frame member are symmetrically arranged on both surfaces. A first take-up reel and a second take-up reel for winding a cover tape that is provided and peeled off from the tape, and driven by the tape feed mechanism It is the first take-up reel and a second
And a take-up mechanism for causing the take-up reel to perform a take-up operation. 2. The tape feeder according to claim 1, wherein a one-way clutch that transmits rotation in only one direction is used for the winding mechanism. 3. 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 first sprocket member and a second sprocket member which are provided with engaging claws to be engaged and are disposed at the same shaft position; and a first sprocket member and a second sprocket member which are pivotally supported at a front end and have an upper surface. A frame member that is a path of the tape, a tape feed mechanism that intermittently rotates the first sprocket member and the second sprocket member, and the tape supported by a holding member coupled to a rear end of the frame member. A first supply reel and a second supply reel for supplying the tape, a tape supplied from the first supply reel, and a tape supplied from the second supply reel. Tape feeder, characterized in that it comprises a erroneous attachment prevention means for preventing the erroneous mounting of the tape guides preparative to predetermined side travel path of each of said frame members.