JPH02135799A - Device for supplying component - Google Patents

Abstract

PURPOSE:To simplify the construction of component supply table driving means by moving a towing element along the track of a plurality of component supply tables, and connecting of disconnecting the element to or from component supply tables. CONSTITUTION:A moving path of a towing element 17 driven by a power source is provided along the track 17 of a plurality of component supply tables 18A, 18B disposed movably on the track, coupling units are provided between the element 17 and the tables 18A, 18B, and waiting places 47, 48 of the tables which do not relate to the supply of components are provided at part of the track of the tables 18A, 18B. A disconnecting unit for disconnecting the connection and a stopper for stopping the movements of the tables in a disconnected state are provided at the places 47, 48. Thus, moving means can be composed of the single element 17, and the mechanism of the coupling unit itself can be simplified.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a component supply device that supplies small components such as chip-shaped electronic components to component removal means such as a suction collet.

(B) Conventional Technology Various devices have been put into practical use as component supply devices for electronic component mounting devices.

In recent years, electronic component supply tapes containing multiple electronic components at equal intervals have been attached in a replaceable manner, and the tapes are fed in pitch to supply multiple component cassettes, which are lined up on a component supply table. The mainstream of this type of apparatus is a configuration in which an arbitrary component receptacle/nod is positioned at a component removal position by moving a supply table. An example of such a configuration can be found in Japanese Unexamined Patent Publication No. 148393/1983. In this example, only one component supply table is provided for one device, but there is also an example in which a plurality of component supply tables are provided for each device. This is the device described in Japanese Patent Application Laid-open No. 140499/1982. If multiple parts supply tables are provided in this way, it becomes possible to replenish parts to other parts supply tables while one parts supply table is in use. However, in this example, an independent drive means is provided for each component supply table, which increases the cost.

(c) Problems to be Solved by the Invention The present invention simplifies the configuration of the component supply table driving means in a component supply device that alternately uses a plurality of component supply tables, and ensures safe and reliable operation. The purpose is to

B) Means for Solving the Problems In the present invention, a plurality of component supply tables on which component cassettes are lined up are movably arranged on their respective tracks. Along the tracks of these component supply tables, a moving path for a pulling body driven by a power source is provided.

A connecting device for self-maintaining the connected state is provided between this pulling body and each component supply table. A waiting area for a component supply table that is not involved in component supply is set in a part of the trajectory of the component supply table. A disconnection device for operating the operated member of the coupling device to disconnect the connection, and a stopper for engaging the operated member in the disconnected state to stop the movement of the parts supply chifur are provided on the standby.

(e) Parts supply tables that are not involved in the supply of working parts shall be placed on standby in the waiting area. The component supply table to be used moves in conjunction with the traction body to position the required component cassette at the component removal station. When it becomes necessary to switch to another component supply table, the towing body transports the connected component supply table to a predetermined waiting area. Here, the disconnection device disconnects the traction body from the component supply table, and the traction body leaves the location leaving the component supply table behind. The operated member of the coupling device engages with the stopper and prevents the movement of the component supply table IF:. When the towing body approaches the parts supply table to be used next, the disconnecting device in the waiting area releases the operated member of the coupling device to create a connection between the towing body and the parts supply table, and also disconnects the operated member from the towed body. Disengage the stopper. Thereafter, the towing body newly starts moving and positioning the parts supply chifur. For parts supply tables that are inactive, the parts cassettes are exchanged using this gap.

(f) Example An example will be described based on the drawings. In FIG. 1, reference numeral 1 denotes an electronic component mounting apparatus embodying the present invention, and its main components include a main frame 2, a board transfer device 3, a big-and-place device 4, and an electronic component supply device 1o.

The substrate transfer device 3 receives the substrate from a loading device (not shown) and carries it to a substrate positioning section provided in the center.
An XY table (not shown), which is the main part of the board positioning unit, sequentially aligns the component mounting points on the board to the component mounting positions, and when the big-and-place device 4 finishes mounting the components, the board is released from the restraint, and an unloading device (not shown) It is sent to

What is shown in FIG. 1 is near the exit of the substrate transport device 3.

The big and place device 4 supports a plurality of slots 5 (only one is shown in FIG. 1) on the periphery of a rotary index table (not shown) so as to be able to rise and fall. The table can be indexed and rotated by the number of component mounting heads 5, and when the component mounting heads 5 arrive at the component take-out station 6 due to the index rotation, the component mounting throat 5 picks up the component, and when it arrives at the component mounting station. , which presses the component onto the board.

Next, the groove structure of the electronic component supply device 10 will be explained based on FIGS. 2 to 6. The electronic component supply device 10 is constructed based on an elongated frame 12 having an L-shaped cross section and fixed to the rear part of the main frame 2. Both ends of the frame 12 slightly protrude from the main frame 2. A rail 13 having the same length as the width of the main frame 2 is laid on the upper surface of the frame 12. This rail 13, together with the rail 14 laid directly on the main frame 2, forms the track 15 of the parts supply table. One of them is connected to the pulling body 17, and the remaining 04 pieces (not shown) are connected to the parts supply table 18A, 1
Fixed to both ends of the lower surface of 8B, parts supply table 18A,
Similarly, five sliders 19 are attached to the rail 14, which makes the 18B movable.
The track 15 plays the role of supporting the component supply tables 18A and 18B, and also serves as a moving path for the towing body 17. The component supply tables 18A and 18B have a plurality of component cassettes 11 arranged on their upper surfaces along the track 15 in a detachable manner. Although the component feeder 11 is depicted in FIG. 1 as being of a type that feeds out taped components one pitch at a time, it may be of any type. Parts supply table 18A, 18B
By connecting the connecting device 21 based on the side plate 20 attached to the lower surface with the towing body 17,
It moves together with the towing body 17.

The pulling body 17 is provided with a nut 22 therein, the nut 22 is screwed onto a feed screw 23 disposed along the track 15, and the nut 22 is moved by rotation of the feed screw 23. The feed gear 23 has a pulley 24 attached to one end and is supported near both ends by bearing blocks 25. A stepping motor (not shown) as a power source drives a belt 26 wound around the pulley 24. By driving once, rotation can be given. Connecting device 21
are the side plates 20 of each of the component supply tables 18A and 18B.
It has a structure in which four bell cranks are rotatably arranged in the frame, and these four bell cranks are connected by a connecting member, so that when one bell crank rotates, the other three bell cranks also rotate. It is something that has. The four bell cranks are a first bell crank 27, a second bell crank 28, and a third bell crank 29 from the right end of the side plate 20 in FIG.
, fourth bell crank 30, and so on. The four bell cranks 27, 28, 29, and 30 each have a bearing 31 at the center of rotation, and a support shaft 32 whose root flange is attached to the side plate 20 fits into the bearing 31, and the nut 33 is used to tighten the bell. The crank has come off and I am doing IL.

The first bell crank 27 is connected to a cutting device 4 which will be described later.
9, and its - side is connected to the operated member 3.
4, the operated member 34 has an upwardly directed protrusion 60 at its end. The end of the other side is connected to one end of the second bell crank 28 by a first connecting rod 35.

The other end of the second bell crank 28 is connected to the third bell crank via a link 36.
It is connected to one end of the bell crank 29. Link 36 is connected to second and third bell cranks 28.29 by pins 37.38. The other end of the third bell crank 29 is connected to one end of the fourth bell crank 30 via a second connecting rod 39.

Second bell crank 28 and first connecting rod 35
The connection point is a pin 40 protruding from the side plate 20 (Fig. 3,
(see FIG. 4) by a tension spring 41.

Therefore, the second bell crank 28 (and the first bell crank 27) is always given the same force in the clockwise direction in FIG. 3, while the third bell crank 29 (and the fourth bell crank 30) is applied in the counterclockwise direction. You will be forced to do so. 42 is a stopper block fixed to the side plate 2o, and an adjustment screw 43
This adjustment screw 43 allows the second bell crank 2
80 rotations are stopped at a certain angle. A roller 44 is housed in the fourth bell crank 30.

The roller 44 is connected to the connecting block 4 attached to the traction body 17.
5 and creates a connection between the pulling body 17 and the component supply table 18A. As described above, the fourth bell crank 30 is given a counterclockwise rotational force by the action of the tension spring 41, and the roller 44 is always kept within the four parts 46 of the connecting block 45.2. The coupling device M: 21 therefore maintains its connection with the towing body 17 by itself. The coupling device 21 provided on the component supply table 18B has a configuration symmetrical to the coupling device 21 for the component supply table 18A. Both ends of the track 15 serve as waiting areas 47 and 48 for the component supply tables 18A and 18B, where cutting 9TI L devices 49 are placed, respectively.
]jη configuration of the separating device 49 is as follows. First, the air cylinder 50 is vertically arranged at the end of the frame 12,
A knuckle shield 52 is attached to the upper part of the rod 51 of this air cylinder 50. Reference numeral 53 denotes an operating lever, which holds a bearing 54 at the center position. A holding stand 55 is attached to the top of the side 1 of the frame 12, and a support shaft 56 is attached to this holding stand 55 by a flange portion at the base, and this support shaft 56 engages a bearing 54 to rotate the operating lever 53. Support movably. A roller 57 is attached to one end of the operating lever 53.
is attached, the other end is fitted into the forked portion of the knuckle joint 52, and a knuckle bin 58 passes through and connects both. The air cylinder 50 normally maintains a state in which the rod 51 is protruded, and accordingly, the operating lever 53 maintains a state in which the roller 57 is lowered1 (Fig. 2, Fig. 5* Ji (0°59 is a shock absorber that slowly stops the parts supply table 18A. Even if the parts supply table 18Bi gets stuck, a similar shock absorber 59 is provided. Connecting device 2
The operation of step 1 is as follows. The pulling body 17 moves either the component supply table 18A or 18B to the waiting area 47 or 48.
(At this time, the separating device i\49 is in a state where the roller 57 is lowered as shown in Fig. 5, and it is possible to receive the first bell crank 27 of the coupling device 21 onto the roller 57.) At this point, the disconnection device 49 operates, the air cylinder 50 retracts the rod 51, and the operating lever 5
The third roller 57 is connected to the first bell crank 27 of the coupling device 21.
Rotate counterclockwise (see Figure 6). Along with this, the second bell crank 28, the third bell crank 29, and the fourth
The bell crank 30 also rotates, and the roller 44 of the fourth bell crank 30 connects the towing body 17 with the concave portion 4 of the hook 45.
6 and the towing body 17 becomes free (see Figure 4).
.

Reference numeral 61 is a stopper that prevents movement of the component supply table 18A when the component supply table 18A is waiting in the waiting area 47. The stopper 61 is attached near the upper end of the frame 12, and is attached to the shock absorber 5.
9 also serves as a holding means. The stopper 61 has a downward protrusion 62, and when the operated member 34 of the first bell crank 27 engages with this protrusion 62, the intended purpose is achieved. The engagement between the protrusion 62 and the operated member 34 is as follows:
This is automatically achieved during the operation of the coupling device 21 and the disconnection device 21. That is, when the roller 57 of the operating lever 53 rises due to the operation of the air cylinder 50, the operated member 34 of the first bell crank 27 also rises, and the protrusion 60 engages with the protrusion 62 of the stopper 61 (as shown in FIGS. 5 and 5). (See Figure 6).

This makes it possible to prevent the component supply table 18A from moving. A similar stopper 61 is also provided in the waiting area 48.

Next, the series of operations of the parts supply work 10 is shown in FIGS. 7 to 10.
This will be explained based on the diagram. In FIG. 7, the parts supply table 18A is being pulled by the pulling body 17 and is performing parts supply work. Parts cassette 1 of parts supply table 18A
1 is out of parts or parts supply table 1
When it becomes necessary to mount a component that is only available in 8B, the component supply table 18A is immediately moved to the waiting area 47 (FIG. 8). At this point, a disconnection device 49 in the waiting area 47 disconnects the component supply table 18A from the pulling body 17.

At the same time, the operated member 34 of the first bell crank 27 engages with the stopper 61 to stop the movement of the component supply table 18A.

The pulling body 17 moves toward the waiting area 48 for connection with the component supply table 18B (FIG. 9).

The component supply table 18B waits for the pulling body 17 with the roller 44 raised. When the towing body 17 arrives at the waiting area 48, the cutting device 49 in the waiting area 48 raises the rod 51 of the air cylinder 50 and connects the connecting device ji'j21.
release. As a result, the roller 44 enters into the four parts 46 of the pulling body 17, and the pulling body 17 and the parts supply table 18B
are concatenated.

At the same time, the operated member 34 moves away from the stopper 60, allowing the component supply table 18B to move. Thereafter, the interrupted component supply is resumed using the component supply table 18B (FIG. 10). During this time, the parts supply unit 18A supplements the parts to the parts cassette 11 or replaces the parts cassette 11 itself in preparation for the next use.

(G) Effects of the Invention Conventionally, in a component supply device having a plurality of component supply tables, each component supply table had an independent moving means, but in the present invention, a single pulling body is used as a moving means. can be configured, and the cost of the device can be reduced. In addition, the mechanism of the self-assembly of the coupling device is simplified by connecting the towing body and the parts supply table using a self-retaining coupling device, and by disconnecting the coupling using a disconnection member placed in the waiting area of the parts supply table. In addition, since the operated member of the coupling device is engaged with the stopper to lock the component supply table, the safety mechanism can be provided in a rational manner and at low cost.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an electronic component mounting device incorporating the device of the present invention, FIG. 2 is a broken perspective view of parts showing the main structure of the component supply device t, and FIGS. 3 and 4 are views of the connecting device. 5 and 6 are side views showing the operation of the separating device and the process of engaging the stopper and the operated member, and FIGS. 7 to 10 are a series of operations of the parts supply device. FIG. 18A, 18B... Parts supply table, 15... Track, 11... Parts cassette, 6... Parts take-out station, 17... Traction body, 21... Connection device,
34...Operated member, 47.48...Waiting area, 49
... Separation device, 61... Stopper.

Claims (1)

[Claims] 2. Patent Registration Claims (1) A plurality of component cassettes are arranged on a component supply table that moves on an orbit, and any component cassette is positioned at a component supply station by moving the component supply table, wherein the component supply table is Arrange multiple units,
Along the trajectory of these parts supply tables, a moving path of a pulling body driven by a power source is set, and a connecting device for self-maintaining the connected state is provided between this pulling body and each parts supply table, and on the other hand, the above-mentioned A waiting area is set in a part of the track in which a component supply table that is not involved in component supply at that time is parked, and a disconnection device that operates an operated member of the connection device to disconnect the connection is provided in this waiting area; A component supply device comprising: a stopper that engages the operated member in a disconnected state to stop movement of the component supply table.