JPH0227096B2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to an apparatus for supplying parts with a tape holding the parts at a constant pitch.
It has particular applications in electronic circuit assembly processes.

(b) Prior Art It has been practiced for a long time to tape leaded electronic components and put them into an automatic component insertion machine, but recently, leadless electronic components have also started to be handled in the same way. Examples of taping methods for leadless electronic components are published in Japanese Utility Model Publication No. 57-23920 and Utility Model Publication No.
This can be seen in Japanese Patent Laid-open No. 58-7399, and a component mounting device that handles such a component tape is disclosed in Japanese Patent Application Laid-open No. 55-
Examples are given in Publication No. 118698 and Japanese Utility Model Application Publication No. 57-87599. Since many types of parts are usually required to configure an electronic circuit, an actual leadless electronic component mounting device uses a large number of reel units on a table, as in the device described in Japanese Patent Application Laid-open No. 55-118698. In many cases, the tapes are lined up and the table is moved to select the desired component tape and take out the component from there. The selected component tape is pitch fed by pushing a pitch feeding lever provided on the reel unit. Recently, however, the variety of leadless electronic components has increased, and even fairly large components are now being taped, making it easier to tape the conventional feed pitch (4
A product with a feed pitch (8 mm) that is twice as large as that of 8 mm) has appeared. In order to mix and use such component tapes with conventional component tapes, a feeding means for appropriately switching the feeding pitch depending on the tape is required, but a component feeding device that satisfies this requirement has not yet been proposed.

(C) Purpose of the Invention The present invention provides a component tape that simply has a component arrangement pitch, with the necessary pitch feed.
It is an object of the present invention to provide a parts supply device that can supply parts without requiring any operations.

(d) Structure of the Invention In the present invention, a plurality of actuators with different strokes are arranged at different positions in the pitch feed station that is to give movement to the pitch feed lever of the reel unit. Then, the position of the pressing part of the pitch feed lever on the reel unit is
It is made different depending on the position of the actuators to be combined.

(E) Embodiment FIG. 1 shows a schematic configuration of the apparatus of the present invention. Reference numeral 1 denotes a table, which moves linearly along a track 2 in the depth direction of the paper surface. A large number of reel units 3 are arranged on the table 1 along the direction of movement of the table 1.
That is, they are aligned and supported in the depth direction of the page. As will be described later, there are several types of reel units 3, but here the common features will be explained. A frame 4 forms the skeleton of the reel unit 3, and has a bead portion 5 and a side wall portion 6 vertically rising from the bead portion 5. Two through holes 7 and 8 are provided in the base portion 5 at an interval, and are engaged with positioning pins 9 and 10 raised from the table 1 to position the unit. The through hole 8 is an oblong hole that is elongated in the horizontal direction of the paper to absorb manufacturing errors. The reel unit 3 is fixed by a latch 11. The latch 11 has a pivot point 12 inside the table 1, and is rotated clockwise in the figure by a spring 13, causing a hook portion 15 at the tip to protrude above the table through the elongated hole 14 of the table 1. The base portion 5 of the reel unit 3 is provided with an elongated hole 16 for receiving the hook portion 15, and the reel unit 3 is prevented from slipping out by engaging the hook portion 15 with the edge of the hole. The latch 11 is engaged and unlatched by operating a lever 17 protruding from the latch 11.

Arms 18 and 19 project from the side wall portion 6 of the reel unit 3 in the horizontal and vertical directions. A feed reel 21 for a component tape 20 is pivotally supported on the arm 18, and a take-up reel 23 for a top film 22 peeled off from the component tape 20 is pivotally supported on the arm 19. The component tape 20 pulled out from the feed reel 21 is guided between the lower guide plate 24 and the guide plate 25. Lower guide plate 2
4 is fixed to the side wall 6, and the upper guide plate 25 is attached to a lever 26 pivoted to the side wall 6, and the component tape 20 is pressed against the lower guide plate 24 by the force of a spring 27. When the component tape 20 passes under the upper guide plate 25, the top film 22 is peeled off to expose the built-in components, and after traveling a little further on the lower guide plate 24, it is wound around the sprocket 28. The sprocket 28 is rotated by a constant angle by a pitch feed lever 29 which is pivotally supported coaxially with the sprocket and rotatable independently thereof. The mechanism will be explained with reference to FIG. 2. First, the ratchet gear 30 is fixed to the sprocket 28, and the pitch feed lever 29 is
The ratchet 31 is pivotally supported. A spring 32 stretched between the pitch feed lever 29 biases the ratchet 31 into engagement with the ratchet gear 30, and a spring 34 forces the detent stop 33 into engagement with the ratchet gear 30. When the pitch feed lever 29 rotates, the ratchet gear 30 and sprocket 28 rotate by a corresponding angle. 3
5 is a spring that urges the pitch feed lever 29 in the counterclockwise direction in the figure, and 36 is the pitch feed lever 29.
It is a stopper that stops the rotation at a certain point.
The bit feed lever 29 is pushed by a cam-driven actuator 37 at a pitch feed station (corresponding to the position shown in FIG. 1), and feeds the component tape 20 in pitch. The actuator 37 is arranged so as not to obstruct the movement of the table 1 and the reel unit 3 on it, and so as to face the pitch feed lever 29 of a particular reel unit 3 when the particular reel unit 3 stops at the pitch feed station. ing. Sent parts tape 2
0 hangs down through a cylindrical guide 38, and the hanging end is sheared off by a cutter unit 39 provided at this station. The cutter unit 39 consists of a fixed blade 40, a movable blade 41, and a cylindrical chute 42 for dropping tape pieces into a receiving box. The movable blade 41 performs a shearing operation in synchronization with the actuator 37. The rotation of the sprocket 28 is transmitted from a timing pulley 43 (shown in FIG. 6) to a timing pulley 45 on the take-up reel 23 side via a timing belt 44. timing pulley 4
A friction plate as described in the specification of Utility Model Application No. 57-87599 (Utility Application No. 55-163774) is inserted between the winding reel 23 and the winding reel 23, and changes in the winding diameter of the top film 22 are controlled by slipping. I try to absorb it. Reference numeral 46 denotes a vacuum suction head supported by an index table (not shown). At this pitch feed station, it stops directly above the parts table, picks up the part 47 from the part where the top film 22 has been peeled off, and transfers it to the parts mounting station. It is something to be carried away.

Now, there are three types of standards for component tapes currently in circulation, and these are shown in Figure 3. The first example is shown in Figure a, in which the tape width W is 12 mm and the component arrangement pitch _P1 is 8 mm. Part 2 is shown in Figure b, and has a tape width of 8 mm and a component arrangement pitch of 8 mm.
Part 3 is shown in Figure c, and has a tape width of 8 mm and a component arrangement pitch of 4 mm. For convenience, these tapes are labeled 20a, 20b, and 20c to distinguish them. For each tape, the pitch _P2 of the perforation 48 that engages with the pawl of the sprocket 28 is the same (4 mm). Since there are two types of component arrangement pitches as described above, the tape feed pitch must be selected accordingly. FIG. 4 shows the movement of the pitch feed lever 29 when the feed pitch is 8 mm, and FIG. 5 shows the movement of the pitch feed lever 29 when the feed pitch is 4 mm. In the case of this figure 4 and the case of figure 5, the stopper 3
In addition to changing the position of 6, the number of teeth of the ratchet gear 30 also changes. The reel unit 3 includes component tapes 20a, 20b, 20c of different standards.
Three types of reel units have been created to accommodate this, and these are shown in FIGS. 6, 7, and 8 as reel units 3a, 3b, and 3c.

The problem with placing the reel units 3a, 3b, and 3c in a mixed state on the same table 1 is switching the pressing stroke of the pitch feed lever 29 at the pitch feed station.
The present invention deals with this problem as follows. That is, the pitch feed lever 29 receives pressure from the actuator 37 by a roller 49 attached to its tip, and as shown in FIGS.
A, 3b and 3c are reversed, and in the case of reel units 3a and 3b, a pitch feed lever 29 and a spacer 50 are inserted to provide a difference in the position of the roller 49. At the same time, in the pitch feed station, two actuators 37a and 37b are placed in parallel as shown in FIG. 9 or 10.
The actuator 37a is connected to the reel units 3a, 3
It is arranged at a position corresponding to the roller 49 in b, and moves up and down with a large stroke. The actuator 37b is arranged at a position corresponding to the roller 49 of the reel unit 3c, and moves up and down with a small stroke. The actuators 37a, 37b engage only with the rollers 49 of the reel unit that has reached the pitch feed station to feed parts, and do not interfere with the pitch feed lever 29 of the adjacent reel unit. Further, the actuator 37a does not interfere with the pitch feed lever 29 that should be pushed by the actuator 37b. The situation during this time is shown in FIGS. 9 to 11. Therefore, the tape 1 has reel units 3a, 3b,
3c can be arranged in any order. Because of its wide width, the reel unit 3a alone is mounted so as to occupy every row of positioning pins 9 and 10.

(F) Effects of the Invention According to the present invention, no matter how reel units with different pitch feed lever pressing strokes are mixed on the same table, the pressing strokes corresponding to the reel units are always applied, and it is necessary to pay attention to this point. This greatly reduces the burden on the operator. Note that the present invention can also be applied to the supply of electronic components with leads.

[Brief explanation of drawings]

FIG. 1 is a partial cross-sectional side view showing the schematic configuration of the device of the present invention, FIG. 2 is a configuration explanatory diagram of the pitch feed mechanism,
Fig. 3 is a front view of the component tape, Figs. 4 and 5 are explanatory diagrams of the operation of the pitch feed mechanism, Figs. 6, 7, and 8 are partial top views of various reel units, and Fig. 9 is a reel unit mounted on a table. 10 and 11 are operation explanatory diagrams showing the relationship between the actuator and the pitch feed lever. 3 {3a, 3b, 3c}...Reel unit,
20 {20a, 20b, 20c}... Parts tape, 21... Feeding reel, 29... Pitch feed lever, 49... Roller (pressing part), 37 {37
a, 37b}...actuator.

Claims (1)

[Scope of Claims] 1. A reel unit equipped with a component tape feed-out reel and a component tape pitch feed lever, and a table that moves on a fixed trajectory and has a large number of the reel units arranged along the direction of the movement. , a pitch feed station where the reel unit that feeds the component tape in pitch stops; and a pitch feed station at which the reel unit stopped at the station is arranged so as not to impede movement of the table and the reel unit thereon. and an actuator that is arranged to face the lever and that pushes the opposing pitch feed lever to feed the component tape in pitch, in which a plurality of actuators with different strokes are arranged at different positions in the pitch feed station, and A parts supply device characterized in that the position of the pressing part of the pitch feed lever in the reel unit is made different depending on the position of the actuator to be combined.