JPH0512267B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is applicable to chipped electronic components (hereinafter referred to as
The present invention relates to a component supply device used in an automatic electronic component mounting device that positions and mounts chip components on a printed circuit board.

[Prior Art] Conventionally, in a component feeding device for an automatic mounting device for electronic components of this type, for example,
As disclosed in Japanese Patent No. 232499, when a component supply tape containing chip components stored at equal intervals is fed to a predetermined component take-out position, the component supply tape is directly intermittently passed one pitch at a time by a ratchet mechanism. At present, the chips are fed out and the chip components inside the component supply tape are taken out by a component take-out means.

[Problem to be Solved by the Invention] However, in such a conventional device, the chip parts are arranged at equal intervals of 4 mm, 8 mm, ... 24 mm, etc., depending on the size of the chip parts within the component supply tape. Because they are stored at intervals, it is difficult to variably adjust the feed pitch of the component supply tape according to the size of all these chip components, as the mechanism becomes complicated and difficult to handle with a single component supply device. I had a problem.

The present invention has been made under the above circumstances, and its purpose is to easily adjust the feed pitch of the component supply tape according to the size of the chip portion using a simple mechanism. The purpose of the present invention is to provide a parts supply device.

[Means for Solving the Problems] Accordingly, the present invention provides a component supply tape having feed holes in which chip components are housed at equal intervals, and intermittently moves one feed pitch at each of the equal intervals to a predetermined component take-out position. In the component supply device, the component supply device is equipped with a component take-out means for taking out each chip component in the component supply tape fed out by the tape feed-out means at the component take-out position, wherein the tape feed-out means A sprocket that meshes with the feed hole of the tape and is allowed to rotate only in the tape feeding direction, a first transmission gear that is attached to the rotating shaft of the sprocket so as to rotate freely in synchronization, and a second transmission gear that meshes with the first transmission gear. transmission gear,
A ratchet mechanism is provided on the rotary shaft of the second transmission gear so as to be rotatable synchronously, a rocking lever that rotates the ratchet mechanism within a certain rocking angle range, and a driving means that drives the rocking lever back and forth. When changing the feed pitch of the component supply tape according to the different storage intervals of the chip parts, the first transmission gear and the second transmission gear are replaced with gears having different gear ratios.

[Function] From the above configuration, by rotating the sprocket of the tape feeding means via the first transmission gear and the second transmission gear, the component supply tape is intermittently fed one feed pitch at a time to a predetermined component take-out position. It is sent out in a specific manner.

Furthermore, by replacing the first transmission gear and the second transmission gear with gears having different gear ratios,
The feed pitch of the component supply tape is changed depending on the interval at which the chip components are stored.

[Example] Hereinafter, the present invention will be described in detail with reference to an illustrated example.

1 to 3 schematically show the overall configuration of an automatic mounting device for electronic components equipped with a component supply device according to the present invention. It is the base. On this base 1, there is a turntable 2 which is divided into 18 parts and serves as a means for taking out parts, and a linearly movable parts supply table 3 on which a plurality of tape delivery units 30 forming tape delivery means to be described later are installed. A first conveyor 4 supplies and conveys a printed circuit board (not shown) on which a chip component W (described later) is assembled and mounted, and the printed circuit board supplied and conveyed from this first conveyor 4 is placed and moved in the X-axis direction and An X-Y table 5 that controls positioning and movement in the Y-axis direction, a second conveyor 6 that discharges and conveys printed circuit boards after chip components are assembled and mounted on this X-Y table 5, and
a conveyor device 7 for transferring the printed circuit board on the X-Y table 5 onto the conveyor 6; a component positioning device 8 for positioning the chip component W; and a through index unit 9 rotatably driven by a servo motor (not shown). The tape sending unit 30
A tape reel 10 into which a component supply tape 100 (to be described later) containing chip components W sealed and stored at approximately equal intervals is fed, and a reel mounting plate 11 serving as a reel holder that holds this tape reel 10 on the component supply table 3. The turntable 2 is attached to an index unit 9, and its rotation is controlled intermittently by the drive of the index unit 9.

As shown in FIG. 4, the above-mentioned component supply stand 3 is provided on a support stand 12 installed on the base 1 so as to be movable in a linear direction via a linear guide 13 and a linear guide bearing 14. Support pins 15 and 16 are protrudingly provided on the component supply table 3, and the tape delivery unit 30 is installed on the component supply table 3 in a positioned state by fitting these support pins 15 and 16 into concave and convex portions. There is.

Furthermore, 17 in the figure is a support arm extended from the component supply stand 3, and on this support arm 17, the lower end surface portion 11a of the reel mounting plate 11 on which the tape reel 10 described above is mounted and held is in an unfixed state. A notch 19 provided at the tip of the support arm 17 has a locking piece 18 projecting toward the lower end of the reel mounting plate 11.
By engaging with the reel mounting plate 11, that is, the tape reel 10 can be prevented from lateral wobbling when the component supply table 3 is moved. On the other hand, the upper end portion 11b of the reel mounting plate 11 is
It is attached to the tape delivery unit 30 via a fixing pin 20, and is supported so as to be able to swing in the vertical direction using the fixing pin 20 as a fulcrum. The swing range is regulated. Note that 23 in the figure is a ball screw for moving the component supply table 3 by driving a servo motor (not shown).

Further, as shown in FIGS. 5 to 8, the tape feeding unit 30 installed on the component supply table 3 has a driven sprocket 31 pivotally supported between a pair of left and right unit frames 30a and 30b facing each other. The feed hole 101 of the component supply tape 100 is engaged between the drive sprocket 32 and the drive sprocket 32, and by driving the drive sprocket 32, the chip components W are stored at equal intervals and their surfaces are sealed with the cover tape 102. Parts supply tape 1
00 is intermittently fed out one pitch at a time toward the suction device of the turntable 2, which is a means for taking out parts, and a ratchet gear 34 is mounted on the rotating shaft 33 of the drive sprocket 32 so as to freely rotate synchronously. A ratchet pawl 36 rotatably supported by a fixed shaft 35 fixed to the unit frame 30a is elastically engaged with the ratchet gear 34 by the biasing force of a spring 37. The drive sprocket 32 is prevented from rotating in the opposite direction and is allowed to rotate only in the tape feeding direction. The pitch of the feed holes 101 is constant regardless of the spacing between the chip parts W, and coincides with the pitch of the feed pins protruding from the peripheral edge of the drive sprocket 32.

A first transmission gear 38 is rotatably and removably attached to the rotating shaft 33 of the drive sprocket 32 that protrudes outside of the unit frame 30a.
A second transmission gear 39 is removably engaged with the second transmission gear 39, and a feed gear 41 constituting a ratchet mechanism is fixed to a rotating shaft 40 of the second transmission gear 39. This feed gear 41 is connected to the rotation shaft 40 of the second transmission gear 39.
The feed pawl 44 is connected to a swinging lever 42 rotatably attached to the feed pawl 44 via a connecting pin 43.
4 is engaged with the feed gear 41 by the biasing force of a spring 45.

Then, as shown by the two-dot broken line in FIG. 6, the swing lever 42 is rotated by the swing angle θ while sliding around the rotating shaft 40 by a drive lever 46 provided by an external drive system (not shown). The feed gear 41 is pushed together with the rotating shaft 40 by the feed pawl 44 as the swing lever 42 rotates, and is rotated by a predetermined amount. As a result, the second transmission gear 39 is rotated, and the first transmission gear meshing with the second transmission gear 39 is rotated.
The transmission gear 38 is rotated and the drive sprocket 3
2 is intermittently rotated one pitch at a time, thereby feeding the component supply tape 100 by one pitch through the feeding hole 101 into which the feeding pin of the drive sprocket 32 is fitted.

Furthermore, due to the return movement of the drive lever 46, the swing lever 42 returns to its original position, leaving the feed gear 41 at that position due to the biasing force of the spring 45. At this time, the feed pawl 44 also returns to the standby position while escaping from the teeth of the feed gear 41 due to the urging force of the spring 45 due to the return movement of the swing lever 42, and prepares for the next pushing operation of the feed gear 41.

That is, the tape feeding unit 30 is fixed such that the distance P between the shafts between the first transmission gear 38 and the second transmission gear 39 is constant.
In addition, the ratchet gear 3 is designed so that the component supply tape 100 can be fed out at a pitch of 4 to 24 mm, for example.
4 has a number of gear teeth that is a common multiple of the minimum feed pitch of 4 mm, and is set to rotate 15 degrees with one feed. Furthermore, when the swinging lever 42 is swung by θ, the first transmission gear 38 and the second transmission gear 3 are
9 to drive sprocket 32 at θ ₂ , i.e.
The mutual gear ratios are set so that the component supply tape 100 is rotated by 30 degrees and fed at a pitch of 8 mm.

Further, as shown in FIG. 9, when the feed pitch is 12 mm, the drive sprocket 32 is rotated by θ ₁ , that is, 45°, via the first transmission gear 38 and the second transmission gear 39. , the first transmission gear 38 and the second transmission gear 39 are replaced as a set so that their gear ratios are set so that the component supply tape 100 is fed at a pitch of 12 mm.

By the way, the cover tape 102 attached to the surface of the component supply tape 100 wound and stored on the tape reel 10 serves as a cover tape peeling means in conjunction with the tape feeding operation when taking out the chip component W. As shown in FIG. 4, the position at which the parts are taken out by the vacuum chuck 61 of the suction device constituting the part taking out means is determined by the rotation of the drive sprocket 32. When set at the apex directly above the center, the cover tape 102 is peeled off at this component take-out position, and the peeled cover tape 102 is wound onto a take-up reel 52.

It should be noted that the present invention is not limited to the above-described embodiments in any way, and it goes without saying that various modifications can be made without departing from the gist of the present invention.

[Effects of the Invention] As described above, according to the present invention, it is possible to variably adjust the feed pitch of the component supply tape while keeping the swing angle of the swing lever by the drive means constant, and thereby, the feed pitch of the component supply tape can be variably adjusted. The feeder can vary the feed pitch of the component supply tape according to the size of all chip parts, and the mechanism only requires a set of gear ratio pairs of the first transmission gear and the second transmission gear. It has the excellent effect of being simple and simple.

[Brief explanation of the drawing]

FIG. 1 is a schematic front view showing an embodiment of the overall configuration of an automatic mounting device for electronic components equipped with a component supply device according to the present invention, FIG. 2 is a schematic side view, and FIG. 3 is a schematic diagram as well. FIG. 4 is a schematic side view of the parts supply device according to the present invention, FIG. 5 is a schematic enlarged plan view of the main parts of the parts supply device, and FIG. 6 is a schematic enlarged side view of the main parts. , FIG. 7 is a cross-sectional view taken from the direction of arrow X-X in FIG. 6,
FIG. 8 is an explanatory diagram showing a combined meshing state of the transmission gears, and FIG. 9 is an explanatory diagram showing another embodiment of the combined meshing state of the transmission gears. 2... Parts removal means (turntable), 3
...Parts supply stand, 30...Tape sending unit,
30a, 30b...unit frame, 32...
Drive sprocket, 33...rotating shaft, 34...ratchet gear, 35...fixed shaft, 36...ratchet pawl, 37...spring, 38...first transmission gear, 39...second transmission gear, 40 ... Rotating shaft, 41 ... Feed gear, 42 ... Swing lever, 4
3... Connection pin, 44... Feed claw, 45... Spring, 46... Driving lever, 100... Component supply tape, 101... Feed hole, W... Chip component, θ... Rocking angle, P ...distance between axes.

Claims (1)

[Claims] 1. Components fed out by a tape feeding means that intermittently feeds out a component feeding tape having feeding holes in which chip components are housed at equal intervals to a predetermined component take-out position, one feed pitch at each equal interval. In the component feeding device, the tape feeding means is configured to engage with a feed hole of the component feeding tape and rotate only in the tape feeding direction. A sprocket that is allowed to rotate, a first transmission gear that is attached to the rotating shaft of the sprocket so that it can freely rotate synchronously, a second transmission gear that meshes with the first transmission gear, and a rotation of the second transmission gear. It consists of a ratchet mechanism installed on the shaft for synchronous rotation, a rocking lever that rotates the ratchet mechanism within a certain rocking angle range, and a drive means that drives the rocking lever back and forth. A component supply device characterized in that when changing the one-feed pitch of the component supply tape in accordance with the different intervals, the first transmission gear and the second transmission gear are replaced with gears having different gear ratios.