JPH0417849B2 - - Google Patents

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a device for attaching a plate-like workpiece to a jig, and more specifically, it relates to a device for attaching a plate-like workpiece to a jig. It relates to a device for arranging them on top and attaching them to a frame-shaped jig.

(Prior Art) Generally, a workpiece such as a printed circuit board material is sent to a plating process while being held in a frame-shaped jig in a vertical position. Conventionally, the workpiece was attached to the jig in two stages, upper and lower.As a device for this purpose, the applicant has developed a structure in which the workpiece is held and attached to the jig using suction pads divided into two stages, upper and lower. is being developed. However, in addition to jigs for mounting workpieces in two stages, upper and lower, jigs for mounting workpieces in three stages, upper and lower, are now being used. Therefore, such a three-stage jig requires a device with a suction pad divided into three stages, but in a factory that uses both two-stage and three-stage jigs, it is possible to If both stepped pads are installed, the equipment will become larger,
A problem arises in that equipment costs increase.

(Object of the Invention) In order to solve the above-mentioned problems, the present invention provides a mounting device capable of mounting a workpiece to both a two-stage jig and a three-stage jig.

(Structure of the Invention) The present invention provides a three-tiered structure that includes an outer frame consisting of an upper frame, a lower frame, and left and right side frames in an upright position, and an upper intermediate frame and a lower intermediate frame that divide the opening of the outer frame into three upper and lower stages. A tool frame is formed, holders are provided in the upper frame, the lower frame, and both intermediate frames, and the edges of the plate-shaped workpieces placed in each of the three stages of openings are held by the holders, and the workpieces are held by the holders. A suction pad that is held and attached to the holder is provided in the work suction mechanism, and the suction pad is divided into upper and lower three stages, each facing the opening of the three stages, and the intermediate suction pad is divided into upper and lower parts with a gap in between. , the gap is wider than the space occupied by the intermediate frame of the two-stage jig frame and the holder attached to the intermediate frame.

(Example) Both the two-stage jig M and the three-stage jig N in Fig. 1 have left and right side frames a extending vertically in the standing position.
, an upper frame b and a lower frame c that connect the upper and lower ends of both side frames a, respectively, and a horizontal carrier bar d that connects the upper ends of both side frames a and projects laterally beyond the side frames a. Arms e projecting upward are provided at both ends of the carrier bar d, and hooks f and f' project inwardly and outwardly from the arm e, respectively, in parallel with the carrier bar d. Jig M, N
is suspended by a hanger-type self-propelled robot (not shown) and transported to a plating process, etc., and a hook f' is provided to engage the arm of the robot from below. The other hook f is designed to sit on the upper edge of the plating tank and support the jigs M and N while the jigs M and N and the works G and g are immersed in the plating tank.

In the two-stage jig M shown in Fig. 1, both ends of an intermediate frame m parallel to the upper frame b are fixed to the intermediate parts of both side frames a, and the openings in the outer frames a, b, and c are formed in the intermediate frame m. It is divided into two stages, an upper opening M1 and a lower opening M2. Large plate-shaped workpieces G1 and G2 (long workpieces with a vertical length L) arranged in two stages, upper and lower, are placed in the openings M1 and M2.
A plurality of plates are arranged in the width direction of the workpiece. Opening M
1. In M2, the workpieces G1 and G2 have multiple locations on the upper edge x and the lower edge y of the holder J in Fig. 3.
is maintained by

FIG. 3 is an enlarged partial view of the negative section of FIG. 1. The holder J is made of a bent and molded short strip-shaped leaf spring. The upper part of the holder J that holds the upper edge of the workpiece The end portion is provided with a bent recess j into which the upper edge x of the workpiece fits. The holder J for holding the lower edge y of the mark is fixed to an adjacent frame (m or c) in an upside-down position from the holder J for holding the upper edge.

In the three-stage jig N shown in Fig. 2, two
Intermediate book frames n and n' are provided. Both ends of the intermediate frames n and n' are connected to the upper and lower parts of the both side frames a, respectively. The openings in the outer frames a, b, and c are divided into three stages by the intermediate frames n and n': an upper opening N1, an intermediate opening N2, and a lower opening N3. Openings N1, N2,
N3 has workpieces g1, g2, g arranged in three rows above and below.
3 (short workpieces having a vertical length l) are arranged in the width direction, and each of the upper edges x and lower edges y and multiple locations are held by holders J similar to those shown in FIG.

The work for attaching the workpieces to the jigs M and N is performed by the workpiece suction mechanism 1 shown in FIG. A main body 2 of the suction mechanism 1 extends vertically, and is provided with a suction pad 3, which will be described later, on the right vertical surface in FIG. When attaching the workpieces G1 and G2 to the two-stage jig M, the suction pad 3 adsorbs the two workpieces G1 and G2 and makes them face the upper and lower openings M1 and M2, and in this state, the main body 2
moves in the direction of arrow R toward the openings M1 and M2, and when the workpieces G1 and G2 push the holder J up and down and fit into the recess j, the suction force of the pad 3 is released and the main body moves in the direction of the arrow R in the opposite direction. I'm starting to get back on track. Workpieces g1 and g are placed in the three-stage jig N in Fig. 2.
2, g3, the suction pad 3 holds the three workpieces g1, g2, g3 into the jig openings N1, N.
2 and N3, and in that state, it operates in the same way as the two-stage jig M described above to perform the workpiece mounting operation.

As mentioned above, the suction pad 3 can be used for both two-stage and three-stage mounting operations, and the pad 3 has the following features to enable such use.

As shown in FIG. 3, the suction pad 3 is provided to protrude from the main body 2 to prevent the main body 2 from colliding with the jigs M and N when the workpiece is mounted. As shown in FIG. 4, which is a schematic diagram in the - arrow direction of FIG. , 6, 7 are vertically separated by gaps 8, 8'. In addition, the suction pad 6 in the middle part is divided into an upper suction pad 10 and a lower suction pad 11 with a gap 9 in between.The upper suction pad 10 and the upper suction pad 5 are used to suction the large workpiece G1. The lower suction pad 11 and the lower suction pad 7 form the lower half suction pad for suctioning the large workpiece G2. In the illustrated embodiment, the upper and lower suction pads 5, 7 are also comprised of two pads 15, 16 and 17, 18 separated by gaps 13, 14 vertically.

The total height h of the suction pad 3 is set slightly smaller than the total height R of the workpieces G and g in two or three upper and lower stages. The width w of the suction pad 3 is also the width W of the workpiece G, g
is set slightly smaller than . The positions and vertical widths of the gaps 8, 8', and 9 are set as follows. The vertical position of the gap 9 approximately corresponds to the position of the intermediate frame m in FIG.
The vertical width S of the occupied space (Fig. 3) is somewhat wider than the vertical width S (Fig. 1). Gaps 8, 8' in Figure 4
The vertical positions of the gaps 8, 8' approximately correspond to the positions of the intermediate frames n, n' in Fig. 2, and the vertical widths of the gaps 8, 8'
n' and the vertical width S' of the space occupied by the holder J projecting upward and downward from them. As is clear from the above description, in both the two-stage and three-stage arrangement, the suction pad 3 reliably attracts the workpieces G and g over a wide range.
Moreover, it is configured so as not to collide with any of the intermediate frames m, n, and n'.

Workpiece G mounted on jigs M and N as described above,
G is removed from jigs M and N after the plating process, but
The workpiece removal mechanism for this purpose will be explained next. In FIG. 5, which is a vertical cross-sectional partial view, the workpiece mounting device 20 holds the jigs M and N and the workpieces G and g (G1, G2 and g1, g2, g3).
A stand 21 for horizontally tilting the carrier bar d, a plurality of push rods 22 and support rods 23 parallel to the carrier bar d, and a discharge conveyor 24 located between the rods 23 are provided. In FIG. 5, for convenience of explanation, the large workpiece G is shown held by the jig M, and the small workpiece g is shown removed from the jig N.

The push rod 22 is a horizontal workpiece G, g.
It extends horizontally above the jig over an area somewhat narrower than the jig opening width (the distance between the side frames a and a in FIG. 1). A lifting mechanism (not shown) such as an air cylinder is connected to the rod 22. The positional relationship of the rod 22 with respect to the workpieces G and g is as shown in FIG.
The positional relationship generally matches that of No.8. Therefore, when the rod 22 is lowered by the lifting mechanism, the rod 22 pushes both edges of the workpiece, whether it is a two-tiered work G or a three-tiered workpiece G, from the holder J to the arrow R in FIG. direction (downward in FIG. 5). Support rod 23
are vertically aligned with the pusher rod 22 below the horizontal workpieces G, g. A lifting mechanism (not shown) is also connected to the rod 23, and while the rod 22 pushes down the workpieces G and g as described above, the rod 23 rises once to support the workpieces G and g from below, and then It descends with 22. After removing the work, the rod 22 returns upward, but the rod 23 further descends to place the works G and g on the conveyor 24.

Workpieces G and g are supplied to the suction pad 3 shown in FIG. 3 from a workpiece supply device constructed as shown in FIGS. 6 to 9.

6 is a schematic plan view, and FIG. 7 is a partially cutaway schematic view of FIG. 6 in the direction of the arrows. In these figures, the feeding device is equipped with a horizontal conveyor 30 (belt conveyor). Arrows P and Q indicate the conveyance direction of the conveyor 30 and the opposite direction (forward and backward), respectively.
On one side of the conveyor 30, a large work accumulation section 31 and a small work accumulation section 32 are installed side by side. Both stacking sections 31 and 32 have generally the same structure, and are equipped with a motor 35 with a clutch brake and a slider 37 that is driven up and down along a vertical guide 36 by the motor 35, as shown in FIG. The slider 37 is configured to stack workpieces G and g of the same type (large or small) in a horizontal position on its upper surface. In addition, in the stacked state, both workpieces G and g are on the side edge Ga on the conveyor 30 side,
ga are lined up one after the other (on the same vertical plane Z in Figure 7).

A plurality of vertical rod-shaped suction pads 40 and 41 of the transfer mechanism 39 are installed above the accumulated works G and g with their lower ends (suction surfaces) aligned in the same horizontal plane. The slider 42 to which the pads 40 and 41 are attached is connected to the rail 4 provided on the lower surface of the horizontal frame 43.
5, and is adapted to be moved along a rail 45 by a slide cylinder (not shown) built into the frame 42.
The frame 43 connects the upper part of the conveyor 30 to the conveyor 3.
The end portion opposite to the slider 37 is guided and supported by a rail 48 via a bracket 46 and a roller 47. The rail 48 extends in the front-rear direction parallel to the conveyor 30 and is attached to a frame 49 of the conveyor 30. A bracket 50 is attached to the upper surface of the frame 43 approximately above the slider 37. The bracket 50 is a rail 5 provided on the lower surface of the frame 51.
2 is guided and supported. The frame 51 and the rail 52 extend parallel to the conveyor 30, and the sixth
As shown in the figure, both ends of the frame 51 are supported by vertical posts 53. In FIG. 7, a slider cylinder 55 is incorporated into a frame 51, and a bracket 56 provided on the upper surface of the frame 43 is connected to the cylinder 55.

As is clear from the above description, the frame 43 can be moved back and forth along the rail 52 by the cylinder 55, and by this movement, the suction pads 40, 41 can be moved above either of the stacking parts 31, 32. The parts 40 and 41 can selectively pick up a large workpiece G and a small workpiece G one by one. Also, work G,
The pads 40 and 41 that have absorbed the workpieces G and g move together with the slider 42 along the rail 45 to above the conveyor 30, and by releasing the adsorption force above the conveyor 30, the workpieces G and g can be placed on the conveyor 30. It's becoming like that.

In order to ensure the above suction operation, the suction pads 40, 41 are designed as follows.
As shown in FIG. 6, for example, six suction pads 40 are provided at intervals, and are positioned to suction the four corners of the small workpiece g and the longitudinal intermediate portions of both edges extending in the front-rear direction (P-Q). . For example, seven suction pads 41 are provided at intervals, and are positioned to suction the entire periphery of the large workpiece G at a total of 10 locations in cooperation with the three suction pads 40 on the conveyor 30 side. . In this way, the small workpiece g is placed on the suction pad 40.
The entire periphery is suctioned at appropriate intervals, and the entire periphery and the center of the large workpiece G are suctioned at appropriate intervals by the suction pads 40 and 41, so both workpieces G and g are stabilized. It is adsorbed in this state. The slider 42 shown in FIG. 7 is designed to slightly lower the pads 40 and 41 during suction operation. Also, each time the workpieces G and g are attracted from above the slider 37, the motor 35 raises the slider 37 to raise the upper end of the group of works G and g to a predetermined suction position in preparation for the next suction operation. There is.

The conveyor 30 is the intermediate conveyor 59 in FIG.
It is connected to a horizontal alignment conveyor 60 via. The conveyor 60 is a roller conveyor, and includes a first roller 62 driven by a motor 61, and a first roller 62 driven by a motor 61.
A plurality of second rollers 64 driven by a motor 65 and a plurality of third rollers 66 driven by a motor 65 are provided in sequence from the front end side of the conveyor.

Among the four first rollers 62, the roller 62 at the rear end (the right end in FIG. 8) has a break in the middle, and a pair of first stoppers 6 are provided at the break and on the rear side.
8,69 are provided. Among the three second rollers 64, a pair of intermediate stoppers 70 and 71 are provided before and after the intermediate roller 64. Further, among the three second rollers 64, the rear end roller 64 employs a free roller shaft 64a, so that the roller itself can freely rotate on the shaft 64a. 3rd of 4
Among the rollers 66, the front and rear ends of the rollers 66 are also interrupted in the middle, and a pair of second stoppers 72, 73 and a third
Stoppers 74 and 75 are provided.

The above-mentioned pairs of stoppers 68 to 75 (work position adjustment mechanisms) are generally the same, and the structure will be explained next using the stoppers 68 and 69 as an example. 8th
In No. 9, which is an enlarged partial cross-sectional view of the figure,
The lower ends of the stoppers 68, 69 are connected to the upper end of a vertical air cylinder 78 via a common guide 77. The cylinder 78 and the guide support mechanism 80 of the vertical guide shaft 79 of the guide 77 are attached to the conveyor frame 81, and the cylinder 7
8 allows the upper ends of the stoppers 68 and 69 to rise from below to above the conveyance surface of the conveyor 60. The stoppers 68 and 69 each have a vertically long elongated hole 82 in the middle thereof, and a drawbar 83 is passed through the elongated hole 82. The drawbar 83 extends in the front-rear direction of the conveyor 60 over the entire length of the conveyor 60, and its front end is connected to an air cylinder (not shown). The drawbar 83 is passed through the long holes 82 of all the stoppers 68-75.
Engagement pieces 85 are fixed to four locations on the drawbar 83. The engaging piece 85 is connected to the stopper 68, 70, 7.
It is designed to engage with the peripheral edge of the elongated hole 82 of No. 2, 74 from the front and back. Therefore, by pulling the drawbar 83, the stoppers 68, 70, 72, 7
4 can be moved forward, and in order to enable this movement, stoppers 68, 70, 7
2 and 74 are connected to the guide 77 so as to be movable in the front and rear directions.

In FIG. 8, a long fixed side stopper 90 is provided along one side edge of the conveyor 60, and movable side stops 91, 92 are provided along the front and rear portions of the other side edge. Stoppers 91 and 92 are air cylinders 93 and 9, respectively.
4, and cylinders 93 and 94 can push out the stoppers 91 and 92 in the width direction of the conveyor 60 onto the conveyor transport surface. A fixed end stopper 95 is also provided at the front end of the conveyor 60.

The specific positions and dimensions of each part of the conveyor 60 are set so that a series of workpiece processing operations can be performed as follows. Further, the following operations are automatically performed based on signals from various sensors.

First, when the two-stage jig M shown in FIG. 1 is sent to the workpiece mounting station, the transfer mechanism 39 shown in FIG. Transfer above 30. When the three-stage jig N shown in FIG. 2 is sent to the workpiece mounting station, the transfer mechanism 39 shown in FIG.
Transfer upwards.

In FIG. 8, until the works G and g are sent to the conveyor 60, the stoppers 68 to 75 are lowered, the side stoppers 91 and 92 are also moved backward, and all the motors 61, 63, and 65 are in operation. There is. In this state, the conveyor 30 (Fig. 6)
The first large-sized workpiece G2 sent via the intermediate conveyor 59 from Stop at. Then the motor 61,
63 and rollers 62, 64 are stopped, and stoppers 70, 71 are raised. Next, when the second large workpiece G1 is sent, the workpiece G1 is stopped by the stopper 71 on the second roller 64 and the third roller 66 having the free roller shaft 64a, and then the motor 65 As the third roller 66 stops, the stoppers 74 and 75 rise. As the stopper 75 rises, the subsequent work G is stopped on the conveyor 59. Next, the drawbar 83 in FIG. 9 is pulled forward. As a result, the stoppers 70 and 74 move forward to move the workpiece G2,
G1 is brought into accurate contact with the stoppers 95 and 71, respectively. Also, before and after this operation, the pistons 93, 9
4 pushes the side stoppers 91, 92 onto the conveyor 60, and the stoppers 91, 92 push the workpieces G2,
G1 is brought into contact with the other side stopper 90. Through the above operations, the works G2 and G1 are aligned on the conveyor 60 in the same positional relationship as shown in FIG.

Small workpieces g3 to g1 on the conveyor 60 in Fig. 8
If sent, one workpiece g3~g
Each time 1 is sent, motors 61, 63, 65
stop sequentially, and the stoppers 68, 69, 7
2 and 73, 74 and 75 rise sequentially, and work g3
~g1 are the first to third rollers 62, 64,
66. Subsequently, the draw bar 83 is operated to advance the stoppers 68, 72, 74, and the cylinders 93, 94 are operated to project the stoppers 91, 92, so that the works g3 to g1 are accurately positioned at predetermined positions.

When the alignment of the works G and g is completed in this way, the main body 2 of the suction mechanism 1 (take-out mechanism) shown in FIG. adsorbs the works G1, G2 or g1 to g3. After adsorption, main body 2
Return to the upright position shown in the figure, and attach the works G and g to the jigs M and N as described above.

The above alignment operation and suction operation are repeated until a predetermined number of workpieces G, g are mounted on the jigs M, N. The jigs M and N on which the workpieces G and g have been attached are sent to the processing process, and the workpieces G and g that have been processed are
are removed from the jigs M and N by the device shown in FIG.

(Effects of the Invention) As explained above, according to the present invention, the suction mechanism 1 common to both the two-stage jig M and the three-stage jig N
can be used, the cost of the device can be reduced and the space occupied by the device can be reduced.

[Brief explanation of drawings]

Fig. 1 is a schematic front view of a two-stage jig, Fig. 2 is a schematic front view of a three-stage jig, Fig. 3 is an enlarged partial cross-sectional view of Fig. 1, and Fig. 4 is a - arrow in Fig. 3. schematic diagram,
Fig. 5 is a vertical cross-sectional partial view of the removal device, Fig. 6 is a plan view showing a part of the feeding device, Fig. 7 is a partial cutaway view of Fig. 6 as seen from the arrow, and Fig. 8 is a partial view of the feeding device. FIG. 9 is a plan view showing other parts of FIG.
FIG. 3 is an enlarged partial cross-sectional view. 1... Adsorption mechanism, 3...
...Suction pad, 6...Middle part suction pad, 9...
Gap, a...Side frame, b...Top frame, c...Bottom frame,
G, g... Workpiece, J... Holder, M... Two-stage jig, m... Intermediate frame, N... Three-stage jig, n,
n'...middle frame, N1, N2, N3...opening.

Claims (1)

[Claims] 1. In a standing position, a three-stage jig frame is formed by an outer frame consisting of an upper frame, a lower frame, and left and right side frames, and an upper intermediate frame and a lower intermediate frame that divide the opening of the outer frame into three upper and lower stages, Holders are provided on the upper frame, lower frame, and both intermediate frames, and the edges of the plate-like workpieces placed in each of the three openings are held by the holders, and the workpieces are held and attached to the holders. A suction pad is installed in the workpiece suction mechanism, and the suction pad is divided into three stages, upper and lower, each facing the openings of the three stages, and the suction pad in the middle is divided into upper and lower parts with a gap between them, and the above gap is replaced by a two-stage type. A jig attachment device for a plate-shaped workpiece, characterized in that the space occupied by an intermediate frame of a jig frame portion and a holder attached to the intermediate frame is larger than that occupied by the intermediate frame.