JPH0192035A - Automatic work inserting device - Google Patents

Abstract

PURPOSE:To improve the accommodation efficiency for works by transporting the transport plates on which a prescribed number of works are housed to a pallet and stopping said transport plates, shifted in each row, by a plurality of detecting means and a stop position control means, and by arranging the works in zigzag form on the pallet. CONSTITUTION:When five engine valves 6 are accommodated into a transport plate 23, an elevator plate 35 is lowered and holds the engine valves, and in the first row, a switch 28 contacts a cam, and the transport plate 23 is transported over a pallet 4, and the lower edge of the valve 6 is adjusted to the opened port 5 of the pallet. Then, a valve shaft 6b is inserted into the pallet 4 by the lowering of a guide rail 20 and the transport plate 23, and then the lowering of the transport plate 23 is suspended. Then, the elevator plate 35 is raised, and the holding of the valve 6 is released, and the valve 6 is shifted to the pallet 4 from the transport plate 23 by a pushing-out plate. The pallet 4 is shifted rearwardly by a prescribed pitch by an endless chain 9, and after the transport plate 23 is raised and then returned to the adjustment position to a chute 16, the valve is supplied again onto the transport plate 23. Then, the second row is set close to the left side by 0.5P from the first row, and the third row is set at the same position to the first row, and the valves are accommodated in zigzag form onto the pallet.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device that can automatically insert workpieces such as engine valves into pallets in a staggered manner.

[Conventional technology]

After machining workpieces such as engine valves, required surface treatments are applied, such as tufting treatment, in which the workpieces are immersed in a treatment liquid, as nitriding treatment to increase the wear resistance of the engine valve surface. Ru.

Conventionally, this work has been carried out by manually inserting a large number of workpieces into wire mesh pallets, and then immersing the pallets in parallel in a processing liquid at the same time.

[Problem that the invention seeks to solve]

As mentioned above, it takes a lot of time and effort to manually insert the works into the pallet one by one.

[Means for solving problems]

The present invention has been made to solve the above-mentioned problems, and the automatic workpiece insertion device of the present invention has an opening for storing the workpieces at a predetermined interval in the front, back, left and right on the top surface. A pallet provided therein, a means for transferring the pallet provided on the base, a chute for sliding the workpiece by its own weight, and a gate device disposed in the middle of the chute for allowing the workpiece to pass through at a desired interval. , a guide rail disposed between the lower part of the chute and the upper surface of the pallet, facing in the left-right direction, and having both ends supported by a pair of columns so as to be able to rise and fall; and an elevator for raising and lowering the guide rail. a means, a conveying plate having a plurality of workpiece receiving parts and capable of reciprocating between a receiving position facing the chute and an insertion position on the upper part of the pallet while being guided by the guide rail; a driving means attached to the conveying plate for reciprocating movement along the guide rail; a plurality of actuating pieces disposed on the guide rail at predetermined intervals by controlling the driving means; a detection means comprising a plurality of switches for detecting the actuating piece; and a stop for controlling the drive means to shift the stop position of the transport plate relative to the pallet for each row of workpieces in response to a signal from the detection means. from the position control means and the work receiving portion of the conveying plate.

The apparatus further includes a take-out device provided on the transport plate to take out a plurality of works onto the pallet.

[For production]

When a predetermined number of workpieces are stored on the transport plate facing the chute, the transport plate moves to the workpiece insertion position on the pallet.
It is transported by a driving means.

Since the stop position of the transport plate is shifted for each row by a plurality of detection means and a stop position control means, the workpieces inserted onto the pallet are arranged in a staggered manner, which improves the efficiency of storing the workpieces on the pallet. improves.

〔Example〕

EMBODIMENT OF THE INVENTION Below, one embodiment of the present invention will be described in detail based on the drawings.

(1) is a base formed in the shape of a rectangular frame in plan view with a groove member (1a) having an angular cross-section, and is placed on a pair of left and right boards (3) (3) erected on the floor (2). It is placed.

(4) is a pallet, which is assembled into a cubic frame (4a) with steel bars, as shown in FIG.

At the center of the front and rear upper sides of this cubic frame (4a), a handle (4
b) is provided protrudingly, and a large number of vertical wire rods (4C) are provided on the upper surface.
and horizontal wire rods (4d) are stretched in a grid pattern to form openings (5) for storing workpieces at predetermined intervals in the front, back, left and right directions.

In addition, projections (4e) for pitch measurement are provided protrudingly provided at predetermined intervals on the outer periphery of the steel bar on the right side of the upper surface.

(6) is a workpiece, for example, an umbrella part (6a) and a shaft part (6b)
As shown in FIG. This is to automatically insert it so that it becomes .

The pallet (4) is housed in the base (1) so as to be movable in the front and rear directions.

As shown in Fig. 2, inside the base (1), there are two pairs of sprockets (7) and (8) in the front and rear, and one pair on the left and right sides. An endless chain (9) is wound around the sprocket (8), and one sprocket (8) is linked to the output shaft of the motor (lO) via the endless chain (11).

The front and rear lower ends of the pallet (4) are detachably held by a pair of front and rear locking tools (12) whose lower ends are fixed to the endless chain (9).

A detection means, such as a proximity switch (13), is provided at the insertion position of the workpiece so as to be aligned with the protrusion (4e) on the upper right edge of the pallet (4).
The signal 13) is transmitted to the motor (lO) via the control device (14).

As shown in FIG. 2, the receiving position of the engine valve from the chute (16) and the insertion position of the pallet (4) are on a straight line, and the pallet (4) is moved to the base (1) by the above-mentioned transfer means. ) intermittently at a predetermined pitch (Q) so that the opening (5) is always at the insertion position.

Next, the transport mechanism for the workpiece (6) will be explained.

The upper ends of the column (15) erected on the right side of the base (1) and the column (17) erected on the left side of the chute (16), which will be explained later, are connected to a connecting plate ( 18).

Brackets (19a) (19a) are provided inwardly protruding from the sliding rings (19) (19) which are fitted into these columns (15) (17) so as to be able to rise and fall freely. ) (19a), the ends of horizontal guide rails (20) are respectively attached.

The guide rail (20) has a groove (
20a) (20b) has an H-shaped cross section, and five cams (21) are placed near the chute (16) in the upper groove (20a) at predetermined intervals in the left and right direction. It is arranged. Moreover, a rack (22) is cut into the lower groove (20b).

(23) is a horizontal workpiece conveyance plate, and as shown in Fig. 4, its front end surface has a predetermined pitch (
P), there are five workpiece receiving parts, that is, notches (24).
6 The notch (24) is provided with a long groove (24) with a slightly enlarged opening.
a) has a notched circular hole portion (24b) connected to the rear end thereof, and the upper edge of the circular hole portion (24b) is chamfered to form the umbrella portion (6a) of the engine valve (6). The back sides of the two can be fitted together.

A driving means (27) consisting of a motor (25) and a reduction gear (26) is attached to the rear center of the conveyance plate (23), and a pinion (27) attached to the output shaft of the reduction gear (26) is attached.
26a) is the rack (22) of the guide rail (20).
) are meshed with each other.

The cam (28a) of the guide rail (20) is attached to the bracket (28a) attached to the upper end of the left side of the reduction gear (26).
limit switch (28) which is turned on and off by
) is provided, and the rotation of the motor (25) can be controlled by a signal from this limit switch (28) via an i=III control device (29) connected thereto.

Pillars (30) erected near the left and right ends of the conveyance plate (23)
A horizontal plate (31) is bridged over the upper end of (30).

At the center of the upper surface of this horizontal plate (31) is the connecting plate (18).
) is fixed to the lower end of a piston rod (32a) of an elevating means, for example, an air cylinder device (32), which is mounted downward.

Therefore, by the vertical movement of the piston rod (32a), both the transport plate (23) and the guide rail (20) are raised and lowered at the workpiece insertion position.

(33) is a gate-shaped mounting frame provided to cover the notch (24) of the conveyor plate (23), and an air cylinder device (34) is provided facing downward in the center of the upper part of the frame. [A horizontal elevating plate (35) is attached to the lower end of the piston rod (34a) in (34).

On the lower surface of the elevating plate (35), there are five holding plates (3
5a) is attached, and the holding plate (35a) has a notch (2
4) can hold down the top surface of the engine valve (6) inserted into the engine valve (6).

Reference numeral (36) shown in FIG. 2 is a forward-facing take-out means, such as an air cylinder device, provided on the lower surface of the conveyor plate (23), and a vertical extrusion plate (37) is attached to the front end of the piston rod (36a). The engine valves (6) in the notches (24) can be simultaneously pushed out from inside each of the notches (24).

A gate device (38) consisting of an air cylinder device is provided in the middle of the chute (16) shown in FIG. Shoot at the right time (1
6).

Furthermore, in order to insert the workpieces (6) into the pallet (4) in a staggered manner, as shown in FIG.
In line with the limit switch (28) in 27), a separate detection means, that is, a limit switch (39) is provided.

Also, on the guide rail (20), near its right end.

an actuation piece for actuating the detection means, e.g. pitch (p);
A pair of cams (40) and (41) are provided so as to be shifted back and forth at a half interval. This limit switch (28)
The limit switch (39) is turned on and off by the cam (40) at the rear left end, and the limit switch (39) is turned on and off by the front cam (41) located 1/2 pitch to the left.

In this way, by shifting both at an interval of 1/2P, the insertion position of the conveyor plate (23) on the pallet can be shifted.

The operation will be explained.

At the receiving position shown in FIG. 4, the relative position with respect to the guide rail (20) is adjusted so that the notch (24) near the right end of the conveyance plate (23) and the chute (16) are aligned.
Defined by limit switch (as shown).

The gate (38) allows one engine valve (6) to be delivered into the cutout (24).

After a predetermined waiting time, the motor (25) is rotated,
The conveyance plate (23) is sent to the right as shown by arrow (a). The primary notch (24) is stopped at a position facing the chute (16) by the limit switch (28) and the cam (21).

The next engine valve (6) is delivered through the gate (38). ``In this way, when the five engine valves (6) are stored in the transfer plate (23), the elevating plate (35) is lowered to prevent the engine valves (6) from flying out during transfer. hold the sea urchin.

Next, due to the rotation of the motor (25), the limit switch (28) in the first row comes into contact with the cam (40), so that the conveyance plate (23) is conveyed above the pallet (4). A limit switch (as shown) stops the lower end of each engine valve (6) in an insertion position aligned with each opening (5) in the pallet (4).

By the operation of the air cylinder system [(32), the guide rail (2
0) and the conveyor plate (23) are lowered, the shaft (6b) of the engine valve (6) is inserted into the pallet (4),
In the inserted state shown in FIG. 1, the transport plate (23) is stopped from descending.

Using the air cylinder device (34), - Raise the elevating plate (35) to release the hold on the engine valve (6), then operate the air cylinder device (36) and push out the plate (37).
) is moved forward and each engine valve (6) is transferred from the transfer plate (23) to the pallet (4).

The motor (10) is rotated and the endless chain (9) transports the pallet (4) backward by a predetermined pitch (c). When the proximity switch (13) detects that the opening (5) in the next row of the pallet (4) has reached the predetermined position,
The motor (10) is stopped.

After the conveyor plate (23) is raised and returned to the position aligned with the chute (16), the engine valve (6) is again supplied to the conveyor plate (23).

Next, the five engine valves (6) are stored in the transfer plate (23) and transferred onto the pallet (4), but the second row stop position is the limit switch (39) and the cam (41).
), and the position is 172P to the left from the first column.

Therefore, in the opening of the pallet (4), as shown in FIG. 6, the second row is shifted from the first row by 1/2P.

If the third column is in the same position as the first column,
Engine valves (6) are housed closely on the pallet (4) in a staggered manner.

When the engine valve (6) is filled in the pallet (4), it is carried out and the next pallet (4) is placed on the base (1).
Place it on.

[Examples of odd forms]

In the above-mentioned embodiment, the insertion position of the workpiece can be changed by changing the pitch between the plurality of actuation pieces provided on the guide rail. can also be arranged in parallel instead of staggered.

〔Effect of the invention〕

According to the automatic workpiece insertion device according to the present invention, the workpiece can be
Since they can be inserted closely into the pallet in a staggered manner, the pallet storage efficiency is improved.

In addition, it has a simple structure using a detection means consisting of an actuation piece and a switch and a stop position control means.

It is easy to adjust the pitch of the workpiece to match the pallet opening.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view of an embodiment of the present invention, FIG. 2 is a partially cutaway left side view, and FIG. 3 is a partially cutaway front view of an embodiment of the present invention.
A perspective view of the pallet, FIG. 4 is a partially cutaway plan view showing the conveyance plate facing the chute, FIG. 5 is a partially cutaway perspective view showing the position control means for the conveyance plate, and FIG. FIG. 2 is a schematic diagram showing a state in which workpieces are inserted in a staggered manner on a pallet in rows. (1) Base (2) Floor (4) Pallet (5) Opening (6) Engine valve (7) (8) Sprocket (
9) (11) Endless chain (10) Motor (12) Locking tool (13) Proximity switch (detection means) (
14) Control device (15) (17) Column (
16) Chute (1g) Connecting plate (19) Sliding ring (20) Guide rail (2
1) Cam (22) Rack (23) Transfer plate (24) Notch (work receiving part) (25) Motor (26) Reducer (27) Bracket (28) Limit switch (29) Control device
(30) Pillar (32) Air cylinder (elevating means) (33) Mounting frame (34) Air cylinder device (35) Elevating plate (36) Air cylinder device (extracting means) (38) Gate device (39) Limit switch (detecting means) (40) (41) Cam (operating piece) Fig. 3 Lr

Claims (1)

[Scope of Claims] A pallet having openings for storing work pieces spaced apart from each other at predetermined intervals in the front, rear, left and right directions on its upper surface, a base that supports the pallet in a horizontally movable manner, and a base mounted on the base. A means for transporting the pallet provided, a chute for sliding the workpiece under its own weight, a gate device disposed in the middle of the chute for allowing the workpiece to pass at a desired interval, and a connection between the lower part of the chute and the upper surface of the pallet. A guide rail is disposed in between, facing in the left-right direction, and has both ends supported by a pair of columns so as to be able to rise and fall freely, an elevating means for elevating and lowering the guide rail, and a plurality of work receiving parts. , and a conveyor plate that can be guided by the guide rail and reciprocate between a receiving position facing the chute and an insertion position above the pallet, and the conveyor plate is reciprocated along the guide rail, a detection means consisting of a driving means attached to a conveyance plate, a plurality of actuating pieces arranged on the guide rail at predetermined intervals, and a plurality of switches for detecting the actuating pieces; and from the detecting means. stop position control means for controlling the drive means to shift the stop position of the conveyance plate relative to the pallet for each row of workpieces in response to a signal; An automatic workpiece insertion device comprising: a takeout device provided on the transport plate to take out the workpiece.