JPS6023081Y2 - Material conveyance device in press machine - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a material conveying device that supplies a metal plate material to be pressed to a press machine and discharges the material after being pressed from the press machine.

Conventional material conveying devices of this type use the vertical movement of the ram of a press machine to move one feed plate by connecting a cam, or directly move one feed plate using an air cylinder, etc., to convey the material. was carrying out transportation.

However, in this method, the material must be fed, pressed and discharged on the same plane, and therefore the material cannot be fed smoothly unless the lower die has a flat surface.

Therefore, this method could only be used when pressing into a relatively simple shape (nearly flat shape).

The purpose of the present invention is to provide a material conveying device that can stably supply and discharge material even when pressing parts with complex shapes where the surface shape of the lower die is not flat. be.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 and 2 are schematic side views of one embodiment of the present invention, in which FIG. 1 shows the press ram 20 at the top dead center, and FIG. 2 shows the press ram 20 at the bottom dead center. It shows the state at a point.

An upper die punch 1 and a post 21 are fixed to the movable press ram 20, and a roller 4 is rotatably attached to the lower end of the post 21.

A lower die 2 is fixed on the fixed base 30,
The approximately triangular cam member 3 is inserted into the guide groove (
(not shown) in the horizontal direction.

Unprocessed sheet metal materials S for press working are stored in a hopper 13 in a horizontally stacked state.

The lower end of the hopper 13 is open, and the lowermost material S□ in the hopper 13 is placed on the material feed plate 8 located at the lower end of the hopper in the state shown in FIG.

The feed plate 8 is located between the lower end position of the hopper and the second position as shown in FIG.
The hopper can be moved freely in the horizontal direction between the lower end of the hopper and the retreated position as shown in the figure.

When the feed plate 8 is in the retreat position as shown in Fig. 2, the hopper 1
The material S □ at the lowest end in 3 is placed on the fixed support member 11 .

A movable support member 9 is located immediately below the feed plate 8 and is fixed to the member 3 so that it can slide horizontally with respect to the fixed base 30 together with this cam member 3.

10 is a spring that returns the cam member 3 from the position shown in FIG. 2 to the position shown in FIG. 1; 12 is a positioning stopper for the front end of the material;
S2 indicates the material that has been conveyed to a predetermined position within the frame, and S3 indicates the material (product) after press working is completed.

At the top dead center position shown in FIG. 1, the workpiece S2 is between the stopper 12 and the feed plate 8 and rests on the movable support member 9.

When the press ram 20 descends from this top dead center position, the roller 4 attached to the lower end of the vertical post 21 hits the inclined surface 3a of the cam member 3, and the roller 4 contacts the inclined surface 3a and moves while springing the cam member 3. 10 and slide it to the right.

The material support member 9 fixed to the cam member 3 also moves horizontally to the right, and when the left end of this movable support member 9 retreats to the right side of the left end position of the feed plate 8, the material S2 does not lose support due to its own weight. It immediately falls to the lower side (that is, above the lower die 2) and is set at the press working position, making it ready for press working.

When the press ram 20 further descends and the right end of the support member 9 hits the right end of the feed plate 8, the support member 9 pushes the feed plate 8 to the right, and these move together to the right.

Before the feed plate 8 starts moving, the lowest material S□ is placed on the feed plate 8 as described above (Fig. Retreat.

(Fig. 2), each material S in the hopper 13 moves down one step by its own weight (lowers by an amount corresponding to the thickness of the material S), and the material S1 in the lowest step is immediately below the feed plate 8. Fixed support member 11 located at a slightly higher position than movable support member 9
rest on top of.

At this time, the lowest material S1 is lined up at the same height as the feed plate 8 (FIG. 2).

After the press working is completed at the bottom dead center position in FIG. 2, when the press ram 20 begins to rise, the roller 4 also rises at the same time, and the cam member 3 begins to move to the left due to the force of the spring 10.

As a result, the support member 9 also moves to the left, and the support member 9 travels until the claw 9a on the right end of the support member 9 hits the claw 8a of the feed plate 8, and moves to the left, after which they work together as one body. to move to the left.

By moving the feed plate 8 to the left, the feed plate 8 moves to the hopper 1.
At first, the material S1 at the bottom of the material S1 is sent horizontally to the left while sliding on the fixed support member 11.

As the press ram 20 further rises, the feed plate 8 and the support member 9 move further to the left, and the left end of the support member 9 hits the material (product) S3 that has been press-worked, and this product S3
At the same time as the material S1 is pushed out of the mold and released, the material S1 moves away from the fixed support member 11 and onto the movable support member 9,
When the material S1 reaches the top dead center position as shown in FIG. 1, it enters a state S2 where the material S1 is positioned at a predetermined position between the front end positioning stopper 12 in the mold and the feed plate 8.

FIG. 3 shows another embodiment of the invention in a schematic side view.

This embodiment differs from the embodiment of FIG. 1 in that the support member 9 and the feed plate 8 are each driven separately by air cylinders 14, 15.

Therefore, the cam member 3, claws 8a, 9a, etc. as shown in FIG. 1 are unnecessary.

In the state shown in FIG. 3, the cylinders 14 and 15 are both OFF (right end positions), and the support member 9 and feed plate 8 are both at the right end positions indicated by solid lines.

The lowest material S1 in the hopper 13 is located in line with the feed plate 8, and the material S2' is set at a pressing position between the front end stopper 12 and the support member 9.

Pressing is performed in this state (the press ram 20 is shown at the top dead center position).

When the press ram 20 passes the bottom dead center and is on its way up, the cylinder 14
．． 15 is turned ON at the same time and moves to the right, and with the material S1 placed on the support member 9, the material S1 is moved by the feed plate 8.
is sent to a predetermined position S2 inside the mold, and at the same time, the press-worked material (product) 33 is pushed out by the support member 9 and discharged out of the mold.

The feed plate and support member at this time are indicated by two-dot chain lines 8' and 9'.

Next, first, the cylinder 14 moves to the right, and the support member that was at the position 9' returns to the solid line position 9, and falls (set) to the pressing position of the material S2' that was at the position S2.

Subsequently, the cylinder 15 moves to the right, the feed plate that was at position 8' returns to the solid line, and the material at the lowest end in the hopper 13 moves to S.
It falls to position 1 and completes one cycle.

It should be noted that it is well known to those skilled in the art to control the drive of the air cylinders 14, 15 at appropriate timings in response to the vertical and reciprocating strokes of the press ram 20, so there is no need to explain it in detail.

As described above, in the present invention, the pressed material is conveyed through the interaction between the feed plate 8 and the movable support member 9, so even when pressing the material into a complicated shape, the material is conveyed smoothly and stably. can do.

[Brief explanation of the drawing]

FIG. 1 is a side view of one embodiment of the present invention, showing the press ram at the top dead center, and FIG. 2 shows the same embodiment, with the press at the bottom dead center. FIG. 3 is a side view of another embodiment of the present invention. S, S□, S2. S3...Material, 8...Song feed plate, 9...Movable support member, 11...
Fixed support member, 13...Hopper, 2o...
...Press Ram.

Claims (1)

[Scope of utility model registration request] A hopper 13 with an open bottom end stores unprocessed pressed materials S in a horizontally stacked state, and the materials are reciprocated horizontally between the lower end position of the hopper and a position retreated from the lower end of the hopper, and the materials are removed with each stroke. a feed plate 8 that can sequentially feed the material one by one from the lower end position of the hopper to a predetermined position; and when the feed plate is in the retreat position, the material S
a fixed support member 11 that supports the material, a movable support member 9 that reciprocates in the horizontal direction between a position where it supports the material at the predetermined position and a position where it has retreated from the support position, and a movable ram 20 of the press machine. means for imparting intermittent reciprocating motion to said feed plate 8 and said movable support member 9 in response to an actuation stroke, said movable support plate 9 moving the material by retracting from said supporting position. A material conveying device for a press machine, characterized in that the material is caused to fall under its own weight from the predetermined position to a pressing position immediately below, and returns to the supporting position to push out and discharge the material after press working at the pressing position.