JP3365102B2 - Substrate loading method and apparatus - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a substrate loading method and apparatus.

[0002]

2. Description of the Related Art In a process of processing a substrate such as a printed wiring board, one substrate is stacked from a plurality of substrates stacked on a loading table.
A method is known in which the sheets are separated one by one and put into a sandwiching roll at the entrance of a conveyor. A method of lifting the four corners of the board with four suction pads when separating the board is adopted. However, in a board having a large number of through holes such as a printed wiring board, the through holes are provided at the positions where the suction pads adsorb. It is necessary to perform an alignment work so that the two do not overlap with each other, and this work requires a lot of time. For this reason, a method of adsorbing a substrate with two adsorption pads is also adopted. However, when transferring a large-sized substrate, if the substrate is a small-sized substrate, the edge of the adsorbed substrate is the substrate of the loading table. There is a risk of rubbing the top surface and scratching the top surface of the substrate. With the recent increase in density, even a small scratch is likely to cause a break in the printed wiring board.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above facts, and an object of the present invention is to insert a substrate separated from a plurality of substrates stacked on a loading table into a sandwiching roll. A substrate loading method that does not cause scratches on the substrate and is easy to work,
Another object is to provide a substrate loading device.

[0004]

According to a first aspect of the present invention, there is provided a board loading method in which the boards 1 are separated from the boards 1a, which are a plurality of printed wiring boards stacked on a loading table 2, one by one. The separated substrate 1 is sandwiched by upper and lower rolls 3a,
3b, by adjusting the height of the loading platform 2 which can be raised and lowered, the suction pad 5 which can be raised and lowered, which is attached to the lower end of the holder 4 which is reversibly movable back and forth, is lowered. The suction pad 5 sucks the upper surface of the rear end of the substrate 1, raises the suction pad 5, and then forms the gap between the lower sandwiching roll 3b and the stacked substrate 1a while advancing the suction pad 5. On the guide piece 7 having a smooth surface,
The front end of the separated substrate 1 is slid so that the separated substrate 1 does not rub against the upper surface of the substrate 1a of the loading table, and the sandwiching rolls 3a and 3b and the sandwiching rolls 3a and 3b.
The substrate 1 is sandwiched between the auxiliary sandwiching rolls 3c and 3d that are connected to each other, and when the substrate 1 is maintained horizontally by the sandwiching rolls 3a and 3b and the auxiliary sandwiching rolls 3c and 3d, the substrate 1 is removed from the suction pad 5. Release substrate
Method, and the guide piece 7 is a substrate to be loaded.
1, the lower sandwiching rods provided at a plurality of positions in the width direction
The protrusions 7a protruding between the rulers 3b,
The guide piece 7 has the substrate 1a side downward and the sandwiching roll 3b.
It is equipped with a smooth inclined surface 7b whose side is inclined upward.
On the surface 7b, the lower edge 1 of the front end surface 11 of the separated substrate 1
It is characterized by sliding 2 .

[0005]

According to a second aspect of the present invention, the substrate loading device separates the substrates 1 one by one from the plurality of substrates 1a which are the printed wiring boards stacked on the loading table 2, and separates the separated substrates 1 up and down. Which is a device for loading into the nip rolls 3a and 3b, and which is capable of moving up and down, a transfer unit 9 having a holder 4 provided above the stack 2 and capable of reversibly moving back and forth; A suction pad 5 that is provided at the lower end of the tool 4 and that is capable of moving up and down to adsorb the substrate 1. Front and rear sandwiching rolls 3a and 3b provided at the entrance of the transport conveyor 6 in front of the loading platform 2 and this sandwiching roll 3a. Auxiliary pinching rolls 3c, 3d connected to 3b,
And the substrate 1 loaded with the lower sandwiching roll 3b.
surface comprises a smooth guide piece 7 in the gap a, the guide
The pieces 7 are provided at a plurality of positions in the width direction of the substrate 1 to be charged.
Protrusions 7a protruding between the lower sandwiching rolls 3b
And the guide piece 7 has the board 1a side downward.
Smooth inclination with the sandwiching roll 3b side inclined upward
The surface 7b is provided, the rear end of the substrate 1 is lifted by the suction pad 5, the suction pad 5 is moved forward, and the front end of the separated substrate 1 is slid on the guide piece 7, so that the separated substrate 1 is mounted on the loading table. The sandwiching roll 3 without rubbing the upper surface of the substrate 1a
The substrate 1 is sandwiched between a and 3b and auxiliary sandwiching rolls 3c and 3d connected to the sandwiching rolls 3a and 3b.
The sandwiched substrate 1 can be maintained horizontally by the sandwiching rolls 3a and 3b and the auxiliary sandwiching rolls 3c and 3d.

[0007]

In the substrate loading method according to the first aspect of the present invention, since the rear end of the substrate 1 is sucked by the suction pad 5, the work of aligning the suction pad 5 is small, and the rear end of the substrate 1 is sucked. Since the front end of the substrate 1 is lifted by the pad 5 and the front end of the substrate 1 slides on the guide piece 7 having a smooth surface, the upper surface of the substrate 1a of the loading table is not rubbed.

A substrate loading device according to a second aspect of the present invention is a suction pad 5 capable of moving up and down for sucking the substrate 1, and
Since the smooth guide piece 7 is provided in the gap between the lower sandwiching roll 3b and the loaded substrate 1a, the suction pad 5 is used for the substrate 1
Since the rear end is lifted and the front end of the substrate 1 is slid on the guide piece 7, the upper surface of the substrate 1a on the loading table is not rubbed.
Further, the work of aligning the suction pad 5 is easy because only the rear end of the substrate 1 is aligned.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings related to one embodiment.

FIG. 1 is a side view of a substrate loading apparatus according to an embodiment of the present invention, and FIGS. 2 and 3 show the state of the substrate loading method according to an embodiment of the present invention. FIG. 4 is a side view showing a portion, and FIG. 4 is a perspective view showing a main portion in a state where the substrate loading method according to the embodiment of the present invention is performed.

As shown in FIG. 1, the substrate loading device of the present invention is a loading platform 2 on which a substrate 1 which is a printed wiring board is loaded.
Equipped with. The loading table 2 can be moved up and down, and the substrates 1 to be separated can be adjusted to a desired height. A transfer unit 9 is provided above the loading table 2. This transfer unit 9 has a holder 4 which is reversibly movable back and forth,
A suction pad 5 that can move up and down is provided at the lower end of the holder 4. The suction pad 5 suctions and lifts the upper surface of the rear end of the loaded substrate 1. The transfer unit 9 includes a first cylinder 22 attached to a fixed piece 21 hanging from the ceiling portion 20, and the first cylinder 22.
The holder 4 is attached to the front end of the first cylinder shaft 23 that reciprocates inside.
Equipped with. The holder 4 has through holes penetrating the front end and the rear end, and the brackets 28 and 29 fixed to the ceiling portion 20.
A shaft 27 provided between the two passes through the through hole.
By the action of the first cylinder shaft 23, the holder 4 moves back and forth along the shaft 27 between the brackets 28 and 29. A second cylinder 24 having a second cylinder shaft 25 that reciprocates up and down is attached to the holder 4, and the second cylinder 24 is moved as the holder 4 moves.
Cylinder 24 moves back and forth. A fixing tool 8 is provided at the lower end of the second cylinder shaft 25, and the suction pad 5 is attached to the fixing tool 8. A pair of the suction pads 5 is provided on the left and right, and sucks the left and right upper surfaces of the substrate 1.
As the second cylinder shaft 25 moves up and down, the suction pad 5 attached to the fixture 8 moves up and down.

The substrate loading device of the present invention is the loading platform 2 described above.
Is provided with a conveyer conveyor 6 in front of the pair of upper and lower nip rolls 3a, 3
b, and a pair of upper and lower auxiliary sandwiching rolls 3c and 3d connected to the sandwiching rolls 3a and 3b. Further, a guide piece 7 having a smooth surface is provided between the lower sandwiching roll 3b and the stacked substrate 1a. The pair of upper and lower sandwiching rolls 3a and 3b is the substrate 1 to be loaded.
Are provided at a plurality of positions in the width direction of the. As shown in FIG.
The guide piece 7 includes a protruding piece 7a protruding between the lower sandwiching rolls 3b, and the substrate 1a side is downward and the sandwiching roll 3b side is upward in the gap between the lower sandwiching roll 3b and the stacked substrate 1a. It is provided with a smooth inclined surface 7b that inclines. The guide piece 7 includes a hanging piece 7c on the substrate 1a side. Substrate 1a loaded with this hanging piece 7c
You can align the front ends of the. When the guide piece 7 is provided with the protrusion piece 7a, the sandwiching rolls 3a and 3b have a structure in which they enter from the outside of the roll, and the substrate 1 is guided by the guide piece 7.
Smoothly transfer to the sandwiching rolls 3a and 3b. Further, the angle of the inclined surface 7b of the guide piece 7 depends on the size of the substrate 1, the rising height of the suction pad 5, and the sandwiching roll 3.
It is appropriately selected depending on the roll diameters of a and 3b, but it is preferably within 45 ° with respect to the horizontal axis, and more preferably 30.
Within ° It is desirable that the surface of the guide piece 7 is subjected to a material or treatment for reducing resistance when the substrate 1 slides. And buffed stainless steel plate.

The substrate loading method of the present invention will be described. As shown in FIG. 2, the loading table 2 is raised or lowered to adjust the uppermost substrate 1 to be separated to a position slightly higher than the lower edge of the inclined surface 7b of the guide piece 7. When the suction pad 5 attached to the fixing tool 8 descends, the suction pad 5 adsorbs the upper surface of the rear end of the substrate 1, and the suction pad 5 is raised, only the rear end of the substrate 1 is lifted. The rear end of the substrate 1 is lifted, air is inserted from the rear end of the substrate 1, and the uppermost substrate 1 is smoothly separated.

Next, the first cylinder shaft 23 shown in FIG.
When the holder 4 is advanced along the shaft 27 by the action of, the suction pad 5 attached to the fixture 8 advances as shown in FIG. At this time, as shown in FIG.
The lower edge 12 of the front end surface 11 of the lifted substrate 1 slides on the inclined piece 7b of the guide piece 7. Since the lifted substrate 1 does not rub the upper surface of the substrate 1a of the loading table, the substrate 1a is not scratched. When the front end surface 11 of the substrate 1 sliding on the guide piece 7 reaches the sandwiching rolls 3a and 3b, the substrate 1 is sandwiched and inserted by the sandwiching rolls 3a and 3b as shown in FIG. When the front end of the inserted substrate 1 reaches the auxiliary sandwiching rolls 3c and 3d, the sandwiching rolls 3a and 3b and the auxiliary sandwiching rolls 3c and 3d are maintained horizontally. When this state is reached, the substrate 1 is separated from the suction pad 5. The distance that the suction pad 5 moves from the suction of the substrate 1 until the suction pad 5 is separated is appropriately adjusted according to the size of the substrate 1.
In addition, it is preferable to match the speed of the transport conveyor 6 and the speed at which the suction pad 5 advances so that the substrate 1 can be inserted smoothly. The substrate 1 sent to the carrying roll 6 is carried to the next step. By sequentially repeating these steps, a plurality of substrates 1a to 1
The substrates 1 separated one by one can be put into the sandwiching rolls 3a and 3b.

As described above, the suction pad 5 is provided at the rear end of the substrate 1.
The front end of the substrate 1 is lifted with a guide piece 7 with a smooth surface.
Since it slides on the upper surface, the upper surface of the substrate 1a of the loading table is not rubbed. Furthermore, since only the rear end of the substrate 1 is sucked by the suction pad 5, the number of times of positioning the suction pad 5 is small and easy.

The embodiment of the present invention is not limited to the above embodiment, and the substrates 1 to be loaded and transported may be in a single row or a plurality of rows, and the weight and width of the substrate 1 may be set. Therefore, the number of suction pads 5 may be increased . Also, adjustment of the moving distance of the holder 4 may be adjusted the stroke of the first cylinder 22, the stop means of the stopper or the like may be provided before and after the holder 4.

[0017]

According to the substrate loading method of the first aspect of the present invention, the rear end of the substrate is lifted by the suction pad, and the front end of the substrate slides on the smooth guide piece. Do not rub Furthermore, since the suction pad sucks the rear end of the substrate, the work of aligning the suction pad is easy.

With the substrate loading device according to the second aspect of the present invention, when the substrates separated from the stacked loading bases are loaded into the sandwiching roll at the entrance of the transport conveyor, the substrates are scratched. It does not occur.

[Brief description of drawings]

FIG. 1 is a side view of a substrate loading device according to an embodiment of the present invention.

FIG. 2 is a side view showing a main part of a state in which the substrate loading method according to the embodiment of the present invention is performed.

FIG. 3 is a side view showing a main part in a state where the substrate loading method according to the embodiment of the present invention is performed.

FIG. 4 is a perspective view showing a main part of a state in which a substrate loading method according to an embodiment of the present invention is performed.

FIG. 5 is a side view showing an enlarged main part of a state where the substrate loading method according to the embodiment of the present invention is performed.

[Explanation of symbols]

1, 1a substrate 2 loading platform 3a, 3b sandwiching roll 3c, 3d Auxiliary sandwiching roll 4 holder 5 adsorption pad 6 Conveyor 7 Guide piece 7b inclined piece 8 fasteners 9 Transfer unit 11 Front end face 12 Lower edge 22, 24 cylinder 23, 25 cylinder shaft 27 axes 28, 29 bracket

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B65H 1/00-3/68

Claims (2)

(57) [Claims] 1. A substrate (1) is separated from a substrate (1a), which is a plurality of printed wiring boards stacked on a loading table (2), one by one, and the separated substrates (1) are sandwiched between upper and lower rolls ( 3a) and (3b), in which the height of a loading platform (2) that can be raised and lowered is adjusted, and it is attached to the lower end of a holder (4) that can be reversibly moved back and forth and can be raised and lowered. The suction pad (5) is lowered, the suction pad (5) sucks the upper surface of the rear end of the substrate (1), and the suction pad (5) is raised, and then the suction pad (5) is advanced. Meanwhile, the front end of the separated substrate (1) is slid on the guide piece (7) having a smooth surface formed in the gap between the lower sandwiching roll (3b) and the loaded substrate (1a). The above-mentioned substrate (1) is rubbed without rubbing the upper surface of the substrate (1a) of the loading table. And write the roll (3a) (3b), the auxiliary sandwiching rolls (3 and connected to the pinch rolls (3a) (3b)
c) The substrate (1) is sandwiched between (3d), the sandwiching rolls (3a) (3b) and the auxiliary sandwiching rolls (3c) (3).
Now that the state in which the substrate (1) is maintained horizontally d), projecting from the suction pad (5) of the substrate separating the substrate (1)
And the guide piece (7) is the width of the substrate 1 to be loaded.
Lower sandwiching rolls (3
b) A protrusion 7a protruding between the
The strip (7) sandwiches the substrate (1a) side down
Equipped with a smooth inclined surface (7b) with the (3b) side inclined upward
Well, on the inclined surface (7b), the separated substrate (1)
Characterized by sliding the lower edge (12) of the front end face (11) of
Substrate loading method. 2. A substrate (1) is separated one by one from a plurality of substrates (1a) which are printed wiring boards stacked on a loading table (2), and the separated substrates (1) are sandwiched by upper and lower rolls ( A device for loading into 3a) and (3b), which comprises a stacking platform (2) that can be moved up and down, and a holder (4) that is provided above this stacking platform and that is reversibly movable back and forth. The unit (9), a suction pad (5) that is provided at the lower end of the holder (4) and that is capable of ascending and descending for sucking the substrate (1), and in front of the loading platform (2), the transfer conveyor (6). Upper and lower sandwiching rolls (3
a) (3b), auxiliary sandwiching rolls (3c) (3d) connected to the sandwiching rolls (3a) (3b), and
The lower sandwiching roll (3b) and the loaded substrate (1
the surface in the gap a) comprises a smooth guide piece (7), this
The guide pieces (7) are provided at a plurality of positions in the width direction of the substrate 1 to be loaded.
Projection between the lower sandwiching rolls (3b) provided
And the guide piece (7) is provided with
Substrate (1a) side down, sandwiching roll (3b) side
It has a smooth inclined surface (7b) which is inclined upward, and lifts the rear end of the substrate (1) with the suction pad (5) and advances the suction pad (5) to separate it onto the guide piece (7). The sandwiching rolls (3a) and (3b) and the sandwiching roll (3) without sliding the front end of the formed substrate (1) and rubbing the separated substrate (1) on the upper surface of the substrate (1a) of the loading table.
a) Auxiliary sandwiching roll (3c) connected to (3b)
Inserting the substrate characterized in that the substrate (1) is sandwiched with (3d), and the sandwiched substrate (1) can be maintained horizontally by the sandwiching rolls (3a) (3b) and the auxiliary sandwiching rolls (3c) (3d). apparatus.