JPH04292330A - Work stacking device - Google Patents

Abstract

PURPOSE:To stack works in excellent alignment and to prevent the works from being damaged. CONSTITUTION:A turn-over stacking part 2 is located to the conveyance terminal end of a conveyance part 1 comprising a pair of belt conveyors 1A and 1B. Through operation of a rotation part 3 of the turn-over stacking part 2, a turn-over arm 5 is repeatedly rotationally rocked approximately in a 180 deg. arc from a conveyance terminal end. The turn-over arm sucks and holds the back of a work W with the aid of a suction part 4 located to the tip of the turn-over arm to turn over the work, and in which case, the work is released from suction and place. Through repetition of above operation, the works W are stacked in excellent alignment.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus used for stacking flat workpieces in the thickness direction.

0002

2. Description of the Related Art An example of a flat workpiece W that is stacked and processed is a ceramic substrate S before firing. Ceramic substrates S have conventionally been stacked as shown in FIG. That is, the ceramic substrate S is punched into a flat plate shape by a press, then conveyed by a belt conveyor 30, and anti-seize powder is sprayed by a powder spraying mechanism 31. And shoot 32
They are then dropped into the firing cassette 33 and stacked there. The stacked ceramic substrates S are then carried into a firing furnace by a lifter or the like (not shown).

[0003] Reference numerals 34 and 35 in the figure represent a heating section and a powder dispersion section constituting the powder dispersion mechanism 31.

0004

In the conventional example described above, the ceramic substrates S are dropped from the chute 32 and stacked in the firing cassette 33. The firing cassette 33 is made slightly larger than the ceramic substrate S in order to reliably receive the ceramic substrate S. Therefore, the dropped ceramic substrates S could not be accurately aligned in the thickness direction, and the stacked ceramic substrates S were not aligned. Furthermore, since the ceramic substrates S are stacked by dropping them from the chute 32, there is a concern that the ceramic substrates S may be damaged by collisions of the falling ceramic substrates S.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a workpiece stacking device that can stack workpieces in good alignment and does not cause damage to the workpieces. .

[0006]

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention is an apparatus for stacking flat workpieces W, which includes a conveyance section and an inversion stacking section, and the conveyance section comprises:
It sequentially conveys the workpieces W, and consists of a pair of belt conveyors arranged in parallel and operated synchronously.The reversal stacking section includes a rotating section equipped with a reversing arm, and a suction section provided at the tip of the reversing arm. The rotating section repeatedly rotates and swings the reversing arm forward from the transport end of the transport section, and the suction section rotates and swings the reversing arm forward from the transport end, while the suction section rotates and swings the reversing arm forward from the transport end. The workpiece stacking device was constructed from the above components.

[0007]

[Operation] According to the above structure, the back surface of the workpiece that has reached the end of the conveyance of the conveyance section is suctioned and held by the suction section provided on the reversing arm that was waiting. The workpiece is then reversed by the rotation and rocking of the reversing arm by the rotating section. At the end of the forward rotation and swing, the suction of the inverted workpieces is released from the suction section, and the workpieces are sequentially stacked there.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be explained in detail below based on embodiments shown in the drawings. FIG. 1 is a perspective view showing a work W stacking device according to an embodiment of the present invention.

[0009] This workpiece stacking device A includes a first conveyance section 1 and an inversion stacking section 2. First conveyance section 1
The belt conveyors 1A and 1B sequentially transport flat workpieces W, and are comprised of a pair of narrow belt conveyors 1A and 1B that are arranged in parallel and operated synchronously.

[0010] The inversion stacking section 2 is composed of a rotating section 3 and a suction section 4. The rotating section 3 is composed of a rotary actuator, and is provided in front of the transport end of the first transport section 1 . A rotating shaft 3a of the rotating section 3 is provided to protrude in a direction perpendicular to the transporting direction of the first transporting section 1, and a reversing arm 5 is rotatably attached to the rotating shaft 3a. The reversing arm 5 is parallel to the conveying direction of the first conveying section 1, and its tip is connected to the belt conveyor 1A. It is placed between 1B and 1B.

The suction section 4 is for suctioning and holding the workpiece W, and is provided on the upper surface of the tip of the reversing arm 5 in the figure. The suction unit 4 is composed of a suction pad, and is connected to a suction air pump (not shown).

A second transport section 6 is provided near the transport end of the first transport section 1 for successively transporting the workpiece W. The second conveyance section 6 is composed of a belt conveyor similar to the first conveyance section 1. The conveyance start end of the second conveyance section 6 is provided at a position 180 degrees opposite the conveyance end end of the first conveyance section 1 with the rotating shaft 3a as the center.

Next, the operation of the work stacking device A having the above structure will be explained.

When the work W is transported by the first transport section 1 and reaches the end of the transport, the reversing arm 5, which is waiting below the end of transport, is rotated forward and upward by the rotating section 3. start. Then, the suction unit 4 comes into close contact with the back surface of the workpiece W and suctions and holds it. While holding the workpiece W, the reversing arm 5 is rotated approximately 180 degrees in the forward direction. When the end of the outward rotation and swing is reached, the suction by the suction unit 4 is released, and the workpiece W is released in an inverted state. The second transport section 6 is waiting there, and the workpiece W is placed on the transport start end of the second transport section 6. The reversing arm 5, which has released the work W, is rotated and swung on its return trip, returns to the standby position below the transport end of the first transport section 1, and waits for the arrival of the next work W.

By repeating this operation, the works W are stacked in good alignment at the transport start end of the second transport section 6. When a predetermined number of workpieces W are stacked, the second transport section 6 starts transporting the workpieces W to the next process site.

Although the work stacking device A described above is provided with the second transport section 6, this second transport section 6 is for transporting the stacked works W again, and this transport section may be omitted. Needless to say.

Next, a pre-firing process for ceramic substrates will be described as an example using the workpiece stacking apparatus A having the above structure. As described in the conventional example, the ceramic substrates S are stacked with anti-seize powder sprinkled on their surfaces, and fired in this state. Therefore, a powder scattering device 10 and a ceramic substrate stacking device 20 are used in this step.

The powder dispersing device 10 includes a ceramic substrate stacking device 2 on the front side of the first conveying section 1 for ceramic substrates.
0 is provided at the transport end of the first transport section 1. Also,
At the end of the transport of the first transport unit 1, a second transport unit 12 is disposed which subsequently transports the ceramic substrate S. Ceramic substrates S are stacked at the transport end of the second transport section 12.
A suction head 14 is provided to transport the water to the pod 13.

The powder dispersing device 10 is for dispersing anti-seize powder by spraying. The powder sprayed by the powder spraying device 10 is mixed with a highly sticky solution (for example, emulsion wax), and this mixed liquid P is sprayed onto the ceramic substrate S.

The ceramic substrate stacking device 20 includes a first
The ceramic substrates S that have reached the end of transport of the transport section 1 are sequentially reversed and stacked on the start end of transport of the second transport section 12. Its structure is the same as that of the work stacking device A described above, and the same or similar parts are denoted by the same reference numerals, and detailed explanations of the structure and operation will be omitted.

[0021] Next, the powder dispersion and stacking process using the apparatus having the above structure will be explained.

The powder mixture P is sprayed onto the surface of the ceramic substrate S transported by the first transport section 1 by the powder spraying device 10. The ceramic substrate S onto which the powder mixture P has been sprayed is subsequently transported by the first transport section 1 and reaches the end of the transport. Then, the reversing arm 5 of the stacking device 20 rotates in the forward direction while the back side of the ceramic substrate S is attracted by the suction unit 4, and carries the ceramic substrate S to above the transport start end of the second transport unit 12, where the suction is released. and place it. The reversing arm 5 that has released the ceramic substrate S is rotated and swung on the return trip, and is returned to the first transport section 1 again.
Returns to the standby position below the conveyance end. By repeating this operation, the ceramic substrates S are stacked in good alignment at the transport start end of the second transport section 12. Furthermore, since the powder mixture P has adhesive strength, the stacked ceramic substrates become integrated with each other, making subsequent work easier.

Furthermore, in this embodiment, a hot air supply section (not shown) is provided on the side of the starting end of the second conveyance section 12, and hot air is directed toward the stacked ceramic substrates S from this hot air supply section. It's spraying. For this purpose, the powder mixture P that has been sprayed dries to increase its adhesive strength, and the stacked ceramic substrates become more integrated.

When a predetermined number of ceramic substrates S have been stacked, the second transport section 12 starts transporting and transports the stacked ceramic substrates S, . . . to the end of the transport. At this time, the ceramic substrates S, . . . are integrated, and their alignment will not be disturbed even by vibrations during transportation. The ceramic substrates S, . At this time,
Since the ceramic substrates S are stacked upside down, the surface to which the powder mixture P is not attached is the top surface. Therefore, there is no problem that the ceramic substrate S sticks to the suction head 14 and cannot be removed. Then, when a predetermined number of laminated ceramic substrates are placed on the pod, the pod 1
3 is carried into a firing furnace (not shown).

[0025]

As described above, according to the present invention, the workpieces are attracted by the reversing and stacking section provided at the end of the conveyance, rotated 180 degrees, and conveyed, where they are stacked one after another. Therefore, it was possible to stack the workpieces in a well-aligned manner. In addition, since the workpieces do not collide with each other when stacking, damage to the workpieces can be prevented.

Furthermore, since the back surfaces of the works are held by suction and stacked inverted, there is no problem even when stacking works that have adhesive properties on the front side.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an embodiment of the invention.

FIG. 2 is a side view showing a process of spraying anti-seizure powder on ceramic substrates and stacking them, in an example using the work stacking device of the embodiment.

FIG. 3 is a side view showing a conventional stacking process.

[Explanation of symbols]

1 First conveyance section (conveyance section) 1A, 1B Belt conveyor 2 Inverted stacking section 3 Rotating part 4 Suction part 5 Inversion arm W Work

Claims (1)

[Claims] [Claim 1] A device for stacking flat workpieces (W), comprising a conveying section (1) and an inversion stacking section (2).
The conveyance section (1) sequentially conveys the workpieces (W) and consists of a pair of belt conveyors (1A, 1B) arranged in parallel and operated synchronously, and the reversal stacking section (2) is A rotating part (3) equipped with a reversing arm (5), and a suction part (4) provided at the tip of the reversing arm (5)
The rotating part (3) repeatedly rotates and swings the reversing arm (5) forward from the transport end of the transporting part (1), and the suction part (4) rotates the reversing arm (5) forward from the transport end of the transport part (1). A workpiece stacking device characterized in that the workpiece (W) is sucked and held on the back side of the workpiece (W) while the workpiece (W) is rotating and oscillating in the forward direction from the conveyance end.