JPH04162930A - Product loading facilities of transfer press - Google Patents

Abstract

PURPOSE:To quickly and accurately load a product by automatically loading a product alternately through co-operation of a traverser co-operated, driven, and control by a controlling means and a pair of sucking means in a pair of buckets arranged on both sides of discharging conveyor. CONSTITUTION:When a signal is inputted from a rotary cam switch, a control circuit drives a cylinder device 11A of the bucket 30A to suck the product on one hand and begins lowering a vacuum cup 15A on the other hand. Continuously, after the discharging conveyor 1 is stopped, a cylinder device 11B is driven to lower another empty vacuum cur from the uppermost level toward a product on the discharging conveyor 1. When a new product is loaded at a delivery position A of the discharging conveyor 1, the vacuum cur 15A is sucked and released to load the product in the bucket 30A on one hand and the product on the discharging conveyor 1 is sucked by the cup on the other hand. When this motion is completed, both cylinder devices 11A, 11B are elevated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a product loading device for a transfer press that loads products on a discharge conveyor into a bucket.

[Prior Art] In a transfer press, a workpiece is sequentially conveyed by a transfer mechanism to molds disposed from an upstream side to a downstream side, and a product is produced by performing several press processes. This product is discharged by a discharge conveyor installed downstream of the transfer press in the same direction as the workpiece conveyance direction, and is finally loaded into a bucket and conveyed to another location.

Conventionally, the products on the discharge conveyor were placed in a bucket manually, or
As disclosed in Japanese Patent Publication No. 59, a large number of pieces were placed in a bucket by a collection mechanism disposed on an extension of a discharge conveyor.

[Problem to be solved by the invention] However, although this collection mechanism can ensure safety and reduce the number of personnel compared to the manual method, the collection mechanism itself is complicated and costly, and it actually requires press processing. There is a space disadvantage due to the long line. On the other hand, the method of loading the products on the discharge conveyor into buckets one by one becomes a factor that inhibits the speeding up of the press.

SUMMARY OF THE INVENTION An object of the present invention is to provide a product loading device for a transfer press that can perform loading operations quickly and automatically, has a simple structure, and achieves significant space savings.

['HT! Means for Solving Problem I] The present invention, while loading one product into one bucket, adsorbs the next product on the discharge conveyor and prepares it for loading into the other bucket, and also eliminates this work by discharging the product. The above purpose is achieved by having a configuration in which the conveyor is automatically operated from both sides of the conveyor.

That is, the present invention provides a traverser that includes a pair of buckets disposed on both sides of a discharge conveyor, a slider and a lateral movement cylinder device, and is formed so that the slider can straddle the discharge conveyor and move back and forth between the two buckets. - and a suction means formed to be able to adsorb and release products, including a pair of vacuum cups and a pair of lifting cylinder devices for raising and lowering each vacuum cup; and control to drive and control the lateral movement cylinder device and each lifting cylinder device so that the products on the discharge conveyor are loaded onto the slider at a pitch equal to the interval between the baguettes and the buckets, and the products on the discharge conveyor are alternately loaded onto both baguettes. It is characterized by providing means.

[Function] When the first product is discharged from the discharge conveyor, the control means drives one lifting/lowering scanner so that one vacuum cup absorbs the product and lifts it above the discharge conveyor. Subsequently, the lateral motion cylinder device is driven to pitch the slider. Then, one vacuum cup is moved above the baguette, and the other vacuum cup is moved from above the other bucket to above the discharge conveyor.

Thereafter, the control means lowers both of the lifting cylinder devices by a predetermined stroke, loads the first product that was adsorbed by the vacuum cup into one baguette, and loads the second product on the discharge conveyor into the vacuum cup on the other hand. Let the product absorb. After that, both lifting and lowering cylinder devices are raised respectively, and when the lifting limit is reached, the slider is pitched in the opposite direction. Therefore, one empty vacuum cup is positioned above the discharge conveyor, and the other vacuum cup, which has absorbed the second product, is positioned above the other bucket.

Therefore, products that are intermittently discharged by the discharge conveyor can be alternately loaded into both buckets.

[Example] Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an external perspective view, and FIG. 2 is a front view.

In both figures, the product loading device of this transfer press can be roughly divided into a pair of suction means 10A, 10B, a traverser 20, and a pair of buckets 30A.

30B and a control means 40 (see FIGS. 3 and 4), and is configured to automatically load products at the delivery position A on the discharge conveyor 1 into each bucket 30A (30B) alternately from both sides. has been done.

First, the discharge conveyor 1 is a means for intermittently conveying the processed product W in the Y direction in FIG. 1 in connection with the advance/return operation of the transfer mechanism.

The pair of buckets 30A and 30B are means for transporting a plurality of stacked products W loaded therein to another location,
They are arranged on both sides of the discharge conveyor 1 with a pitch P as shown in FIG.

For transportation, roller conveyor 35A is used.

At 35B, you are guided to the next process.

In addition, the traverser 20 straddles a kite rail 24 installed between servo boats 27 and 27 attached to a column of the press (not shown), and straddles the discharge conveyor 1 along this kite rail 24 between both buckets 30A and 30B. The slider 23 includes a slider 23 supported so as to be reciprocally movable, and a lateral movement cylinder device 21 that reciprocates the slider 23 via a piston rod 22.
3 in the X direction by a pitch P shown in FIG.

Next, the pair of suction means 10A and IOB are means for suctioning the products W located at the delivery position A on the discharge conveyor 1, and releasing the suction and loading the products W into the respective buckets 30A and 30B.

The suction means 10A (IOB) in this embodiment includes a lifting cylinder device 11A (11B) and this cylinder device 1.
1A (IIB) and a vacuum cup 15A (15B>) attached to the tip of a piston rod 12A (12B) that is moved up and down in the Z direction in FIG.
It has a function to release the adsorption. Also, vacuum cup 1
5A (15B) is the cylinder device 1 as shown in FIG.
1A (IIB), the upper limit level HL, the level ML that adsorbs the product W on the discharge conveyor 1, and the bucket 30A.
Any level NL at which the product W is released from adsorption within <30B>
It is positioned in Note that the levels ML and NL are automatically maintained when the vacuum cup 15 is pressed against the product W.

Here, both adsorption means 10A (IIA, 12A).

15A), IOB (11B, 12B, 15B>) are fixed to the slider 23 with a pitch P, and when the slider 23 is in the normal position shown by the solid line in FIG. , and the other vacuum cup 15B is fixed to the one positioned above the other bucket 30B. Therefore, when the slider 23 is in the forward position shown by the two-dot chain line, one vacuum cup 15A or one bucket 3
Above 0A, the other vacuum cup 15B is moved above the discharge conveyor 1.

Next, the control means 40 controls the horizontal movement cylinder device 21 of the traverser 20 and the suction means 10A so that the products W on the discharge conveyor 1 are alternately loaded onto both baguettes 30A and 30B.
, IOB's lifting cylinder devices 11A and IIB, and the drive control timing is performed in a certain relationship with the transfer mechanism as shown in FIG.

That is, the control means 40 in this embodiment is formed of a control circuit 41 and a mechanical or electronic rotary cam switch 42, as shown in FIGS. 3 and 4.

The rotary cam switch 42 outputs drive control signals 81 to S to the transfer mechanism or the present device each time the angle of the crankshaft that causes the slide to move in the vertical stroke reaches each set angle.

Here, as shown in FIG. 4, the control circuit 41 controls when the slider 23 is moved to the forward position shown by the two-dot chain line in FIG. When this happens, the rotary cam switch 42 outputs a signal S.

is input, the cylinder device 1 of the bucket 30A
While the vacuum cup 15A is being driven to adsorb the product W, the vacuum cup 15A begins to be lowered. Subsequently, after stopping the discharge conveyor 1 at the angle θ1 (or at the same time), the cylinder device 11B is driven to remove the other empty vacuum cup 15B.
is lowered from the upper limit level HL toward the product W on the discharge conveyor 1.

Then, when the transfer mechanism finishes the advance operation and enters the advance operation (a new product W is placed on the delivery position A of the discharge conveyor 1) (angle θ2), the vacuum cup 15A is sucked and released, and the product is released. The product W is loaded into the bucket 30A on one side, and the product W on the discharge conveyor 1 is adsorbed onto the vacuum cup 15B on the other side.

When this operation is completed, both cylinder devices 11A.

Increase 11B. In this case, vacuum cup 15
Since the upward stroke of B is short, the crank angle θ1 is 90
At this point, the discharge conveyor 1 is returned to the upper limit level HL, and the discharge conveyor 1 is restarted at the upper limit level HL. On the other hand, the vacuum cup 15A with a long upward stroke also reaches the upward limit level HL by the angle θ4 when the transfer mechanism enters the return operation.
is back.

At this point, both vacuum cups 15A and 15B reach the upper limit level HL, bucket 3OA, and conveyor 1. Since it does not interfere with any of the buckets 30B, the control circuit 4
1 drives the lateral movement cylinder device 21 to move the slider 23
is pulled back to the right in the pitch P diagram so that it is in the normal position shown by the solid line in FIG.

Therefore, this time, the empty one vacuum cup 15A is moved above the discharge conveyor 1, and the other vacuum cup 15B or the other bucket 30B, which is sucking the product W, is moved. Thereafter, the control circuit 411 repeatedly performs driving control of the above procedure.

However, one cylinder device 11A and the other cylinder device 11
In B, the lowering timing is alternately changed depending on whether the conveyor is positioned above the discharge conveyor 1 or not.

Next, the effect will be explained.

Now, consider the initial state in which the slider 23 is in the normal position shown by solid lines in FIGS. 1 and 2.

And the crank angle θ. When the signal S output at 0 degrees is input from the rotary cam switch 42, the control circuit 41 moves the other vacuum cup 15B with the longer downward stroke length to the upper limit level H, as shown in FIG.
The elevating cylinder device 11B is driven so as to be lowered from L toward the inside of the other bucket 30B. Subsequently, when the discharge conveyor 1 reaches an angle θ1 at which it stops, the cylinder device 11A is driven to move the vacuum cup 15A with the shorter downward stroke length from the ascending weir level HL to the discharge conveyor 1.
It is lowered toward the product W (level ML) located at the upper delivery position A.

When the transfer mechanism reaches an angle θ2 at which it starts an unclamping operation, the control circuit 41 causes one vacuum cup 15A to perform a suction operation, and the other vacuum cup 15B to perform a suction release operation. Therefore, on the one hand, the vacuum cup 15A
adsorbs the product W from the delivery position A on the discharge conveyor 1. On the other hand, the vacuum cup 15B is either released from suction at this stage or is not suctioning the product W, so the bucket 30
Product W is not loaded in B.

At the same time, the control circuit 41 drives both lifting cylinder devices 11A and 11B upward. Then, while the product W is not adsorbed, the vacuum cup 15A reaches the upper limit level HL at an angle θ3 (90 degrees). Thereby, the discharge conveyor 1 moves to the next angle θ in order to convey the next (second) product W to the delivery position A.

is driven up to.

On the other hand, the other vacuum cup 15B, which has a longer upward stroke length, is raised to the upper limit level HL by the time the unclamping operation is completed and the return operation is started at an angle θ4.

After that, since the first vacuum cup 15A and the empty vacuum cup 15B are both in the ascending decoy, the control circuit 41 drives the lateral movement cylinder device 21 to move the slider 21 is fed by pitch P to the forward position 1 shown by the two-dot chain line in FIG. That is, when the crank angle θ0 becomes 0 degrees, the vacuum cup 15A is moved above the bucket 30A, and the vacuum cup 15B is moved above the discharge conveyor 1.

Thus, in the next cycle, the one vacuum cup 15A with the longer downward stroke length is moved to an angle θ.

The other vacuum cup 15B, which has a shorter downward stroke length, is lowered at a slower angle θ1.

When the angle θ2 is reached, the one vacuum cup 15A is lowered to the level NL in the bucket 30A, and the other vacuum cup 15B is lowered to the level ML above the discharge conveyor 1. Therefore, the control circuit #I41 controls the vacuum cup 1 on the other hand.
5A is switched to the suction release operation to load the first product W into one bag h30A, and at the same time, the other vacuum cup 15B is set to the suction operation to suction the second product W at the delivery position A.

Then, both the cylinder devices 11A and 11B are moved upward, and when both the vacuum cups 15A and 15B reach the limit level HL at the angle θ, the slider 23 is returned from the forward position to the home position. By repeating this, the products W that have been intermittently transported to the delivery position A by the discharge conveyor 1 can be alternately loaded onto both buckets 30A and 30B.

According to this embodiment, the pair of buckets 30A
, 30B, a pair of vacuum cups 15A, 15B, and lifting cylinder devices 11A, 11B.
0A, IOB, this suction means 10A, a traverser 20 for feeding the IOB by a pitch P, and a control means 40, and the products W on the discharge conveyor 1 are automatically loaded into both buckets 30A, 30B alternately from both sides thereof. Because of this structure, products W can be loaded quickly and accurately without the need for manpower.

Therefore, it is possible to increase the pressing speed of the negative layer.

Further, both buckets 30A and 30B are arranged on both sides of the discharge conveyor 1, and the traverser 20 is connected to the surface suction means 10.
A, IOB in both buckets 30A.

Since the conveyor is configured to feed at a pitch of P over 30B, the structure is simple and compact, and a large space can be secured downstream of the discharge conveyor 1. In other words, the press working line can be substantially shortened.

In addition, since the products W are automatically loaded alternately onto both baguettes 30A and 30B, the number of bucket replacement operations can be halved and the number of personnel can be reduced.

In addition, the means for lifting and lowering the vacuum cups 15A and 15B are as follows:
It is composed of lifting cylinder units fllA and IIB, and can hold the levels ML and NL just by placing them in contact with the products W. Accurate loading work is possible.

Further, the control means 40 detects the crank angle and sends a signal S.
Since it is composed of a rotary cam switch 42 that outputs a signal S and a control circuit 41 that drives and controls each component based on a signal S, synchronization with the transfer press is ensured.

[Effects of the Invention] As described above, according to the present invention, the pair of buckets disposed on both sides of the discharge conveyor are alternately driven by the traverser, which is cooperatively controlled by the control means, and the pair of suction means. Since it is configured to automatically load products on the
Quick and accurate product loading can be achieved, and the structure is simple, resulting in significant space savings and even higher press speeds.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which Fig. 1 is an external perspective view, Fig. 2 is a front view, Fig. 3 is a block diagram of the control means, and Fig. 4 is a diagram for explaining operation timing. It is. 1... Discharge conveyor, 10A, IOB... Adsorption means, 11A, IIB... Lifting cylinder device, 15A, 1
5B... Vacuum cup, 20... Tranparser-1 21... Lateral movement cylinder device, 23... Slider, 24... Kite rail, 27... Support, 30A, 30B... Bucket, 35A, 35B... Conveyor, 40... Control means, 41... Control circuit, 42... Rotary cam switch.

Claims (1)

[Claims] (1) A pair of buckets arranged on both sides of the discharge conveyor, a traverser that includes a slider and a lateral movement cylinder device and is formed so that the slider can be moved back and forth between the two buckets across the discharge conveyor, and a pair of vacuum A suction means including a pair of lifting cylinder devices for raising and lowering the cups and each vacuum cup and configured to be capable of adsorbing and releasing products, the suction means being arranged at a distance equal to the distance between the discharge conveyor and the bucket. A control means is provided for driving and controlling the horizontal movement cylinder device and each lifting cylinder device so that the cylinder devices are attached to the slider at pitches and products on the discharge conveyor are loaded alternately into both buckets. Transfer press product loading device.