JPH05293568A - Work automatic feeding device for press machine - Google Patents

Abstract

PURPOSE:To determine the controlled variable specific to press dies by the connection between the terminals of the plug socket. CONSTITUTION:Arms 49 of the required number where a work sucking means 51 is provided are fixed by a fixing means 50 to a rail 47 at the required pitch based on the number of press dies 2 mounted on a press machine 1, the work dimensions or the like, and an elevating means B and a transverse moving means D are actuated in the preset procedure and by the required feed based on the connection between the terminals of plug sockets E provided to the press dies 2. This arrangement allows the work 3 in the respective press dies 2 where the press working is completed to be sucked by a work sucking means 51 and successively fed to the press dies 2 for the succeeding processes, therefor, easily coping with the change of the feed of the elevating means B and the transverse moving means D accompanied by the change of the number of the press dies 2 and the arms 49.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a single large-sized press machine in which a plurality of press dies having different processing parts are set, and the workpieces are automatically fed to and discharged from the plurality of dies automatically. Regarding the device.

[0002]

2. Description of the Related Art A work feeding device is provided in a press machine in which a plurality of press dies having different working parts are arranged in series, and a work is automatically fed laterally to each press die to simultaneously perform a multi-step press working. The press device that enables
For example, it is known as a transfer press or the like.

[0003]

However, the conventional automatic work feeding device of the transfer press is such that the number of press dies according to the work feeding pitch, the work size, and the number of working steps,
There is a problem in that the changeable range for the change elements such as is narrow and the versatility is lacking.

For example, in order to improve work efficiency, in the case of a work having a small size, a large number of small-sized press dies are set in one press device so that a large number of workings are simultaneously performed, and a work having a large size is performed. In the case of, it is desirable to set a small number of large-sized press dies to perform processing, but in the conventional work feeding device, the work feeding pitch is limited to a narrow range as described above. This was impossible because.

However, if a manipulator or a robot hand is used to feed the work in order to increase the work feed pitch, the work feed means between the respective dies has different drive sources, so that the feed device is synchronized. It is not practical because the adjustment is troublesome.

In view of the above-mentioned problems of the prior art, the present invention has a versatility in which the number, size, etc. of the press dies mounted on the press device can be freely and easily changed. It is an object of the present invention to provide a high work automatic feeder for a press machine.

[0007]

In order to achieve the above object, an automatic work feeding device for a press device according to the present invention is vertically slidably provided on a supporting means provided in front of or behind the press device. Provided on the lifting plate and supporting means,
Further, the lifting means for lifting the lifting plate, the moving plate slidably mounted on the lifting plate in the left-right direction, and the lifting plate,
In addition, the lateral moving means for moving the moving plate in the left-right direction, the rail fixed to the moving plate in the left-right direction, and the rail,
A plurality of arms that are slidably fitted in the longitudinal direction and that are provided with work adsorbing means at the tip end that extends substantially horizontally in the direction orthogonal to the rail, and that arms are fixed at any position on the rail. And a connecting terminal provided on any of a plurality of press dies installed between a plurality of arms and capable of determining the amount of movement of the lifting plate or the moving plate that is unique to the press dies during press working. It is characterized by having an outlet connected between the two.

[0008]

According to the number of press dies mounted on the press device, the size of the work, and the like, the necessary number of arms provided with the work suction means are fixed to the rail by the fixing means, and the lifting means and the lateral movement means are provided. And are operated in a predetermined required order and feed amount based on the connection between the terminals of the outlets provided in the press die, so that the work that has been pressed in each press die is processed by the work suction means. It is adsorbed and sequentially sent to a press die for the next process.

By changing the number of arms and the mounting position on the rail according to the size of the press die and the number of processing steps,
It is possible to correspond to any press die arrangement, and the feed amount of the elevating means and the lateral moving means unique to the combination can be easily set by connecting the terminals of the outlets provided in the press die. Therefore, it is versatile and easy to set and adjust.

[0010]

1 to 4 show an embodiment of the present invention, in which a plurality of press dies arranged side by side in the press device (1), for example, three sets of press dies as shown in FIG. (2) is installed, and a large number of works (3) are stacked and stored on the left side of the lower mold (2a) (forward in the work transfer direction), and the work is placed so that the upper surface has a constant height. A supply box (4) that pushes upwards in sequence is installed, and also on the right side (backward in the work transfer direction).
Is a storage box for storing the pressed work (3)
(5) is installed. (2b) is the upper mold.

On the front surface (the left surface in FIG. 1) of the press device (1),
A base plate (6) is fixed by a bracket (7), and a pair of left and right first screw rods (8) facing in the vertical direction and parallel to each other are provided on both sides of the front surface of the base plate (6) for bearings (9). Is pivotally installed.

A sprocket (10) fitted on the upper ends of both first screw rods (8) and a first motor (1) fixedly mounted on the center of the front surface of the substrate (6).
A chain (13) is wound around the sprocket (12) of (1).

The first screw rods (8) are provided with nuts (15) fixed to the upper side surfaces of both side plates (14a) of the U-shaped groove-shaped lifting frame (14) near the front surface of the board (6). Are screwed together, and the lifting frame (14) is
The rear plate (14b) is guided by the motor (11) to the rail (16) on the front surface of the substrate (6) to move up and down.

The first motor (11), the sprockets (10) (12),
An elevating means (A) for the elevating frame (14) is formed by the chain (13), the first screw rod (8), the nut (15) and the like. Both side plates (1
A locking hole (17) is formed in the front lower end of 4a).

Below the both side plates (14a), a rear upper part of both side plates (18a) of a swing frame (18) having a shape similar to that of the elevating frame (14) is pivotally supported by a pivot shaft (19). A front fixing hole (20) and a rear fixing hole (21) are formed in the front and rear portions of the plate (18a) at positions having the same length as the interval between the pivot shaft (19) and the locking hole (17). Has been done.

The upper and lower ends of both side plates (18a) are connected by an upper plate (22) and a horizontally long lower plate (23), respectively. An oil cylinder (25), which is a rotating means for the swing frame (18), is pivotally supported at the tip of the bracket (24) standing on the front surface of the rear plate (14b) of the elevating frame (14). Piston rod (25a)
Is pivotally attached to the front part of the upper plate (22) of the swing frame (20).

The rocking frame (18) rocks back and forth due to the expansion and contraction of the oil cylinder (25), and as shown in FIG. 1, the oil cylinder (25) always expands to move the rocking frame (18). It is inclined rearward and downward and is located at a use position where the tip portion enters into the press device (1). At this time, the locking hole (17) and the front fixing hole (20) are overlapped with each other, and the fixing means is fixed to them. By inserting the lock pin (26), the swing frame (18) is fixed in the use position, and the lower plate (2
3) is vertical.

At the left and right ends of the rear surface of the lower plate (23), a pair of left and right second screw rods (27) facing in the vertical direction and parallel to each other are provided.
A sprocket (29) that is pivotally supported by (28) so that it cannot move up and down and that is fitted to the upper end of the sprocket
The sprocket (3) of the second motor (31) fixed with (30)
A chain (34) is wound around 2) via a guide sprocket (33).

Immediately after that, a nut (36) fixedly mounted on the front surface of a horizontally long lifting plate (35) parallel to the lower plate (23) is screwed into both the second screw rods (27), so that the lifting plate ( 35) is moved up and down by the second motor (31).

That is, the second motor (31) and the sprocket
An elevating means (B) for the elevating plate (35) is formed by the (32), (33), the chain (34), the second screw rod (27) and the like. Also the substrate
(6), lifting means (A), lifting frame (14), rocking frame (18), oil cylinder (25), etc., supporting means for supporting the lifting plate (35)
(C) is formed.

On the rear surface of the lifting plate (35), a third screw rod (37) parallel to it is pivotally supported by a bearing (38) so as not to move laterally, and is fitted to the right end of the third screw rod (37). Sprockets (39)
A chain (43) is wound around the sprocket (42) of the third motor (41), which is fixed to the front right end of the lift plate (35) with the bracket (40).

On the pair of left and right guides (44) projecting rearward from the rear surface of the lifting plate (35), a moving plate (45) parallel to the third screw rod (37) immediately after the third screw rod (37) is moved laterally. A nut (46), which is freely supported and fixed to the center of the front surface of the moving plate (45), has a third screw rod (3).
The moving plate (45) is laterally moved by the third motor (41) by being screwed to the (7).

That is, the third motor (41) and the sprocket
The lateral movement means (D) for the moving plate (45) is formed by the (39), (42), the chain (43), the third screw rod (37), the nut (46) and the like.

A rail (47) having the same length as that in the left-right direction is fixed to the upper end of the rear surface of the moving plate (45), and a T-shaped mounting groove formed in the rail (47) and opening rearward. A base plate (49a) formed at the base end of a plurality of, for example, four arms (49) facing rearward is slidably mounted on the (48) and the rail (47).
Each arm (49) is fitted detachably from the end of
By tightening a pair of left and right fixing bolts (50) that are screwed to the base plate (49a) and pressing their tips against the groove bottom surface of the mounting groove (48), the rail (47) is fixed at the desired position. ing.

The number and mounting dimensions of each arm (49) with respect to the rail (47) depend on the number of press dies and the mounting interval (pitch) (P) of the press dies according to the number of working steps, and are criteria for starting the operation. The mounting position of is when the lateral movement means (D) is not operating.
Each arm (49) has multiple press dies (2) (when the arm is retracted)
Between the press die (2) and the supply box (4) or the storage box (5).

A suction cup (adsorption means) (51) connected to a vacuum source (not shown) is vertically provided at the front and rear portions of the lower surface of each arm (49).

FIG. 5 shows the second press of the press machine (1) during operation.
An arm (49) that is moved by the motor (31) and the third motor (41)
The motion locus of FIG.

During the press working, each arm (49) waiting at a predetermined height on the side of each lower die (2a) has a suction cup (51) when the upper die (2b) is lifted up after the press working is finished. ) Rises a distance (a) to a required height slightly above the lower die (2a) (S1), and then moves a required distance (b) in the opposite direction (left) to the work feed direction (S2). ), Work adjacent to the previous stage in the work feed direction
It is located directly above the required suction part of (3).

Next, when each arm (49) descends by a required distance (c) (S3) and each suction cup (51) is brought into pressure contact with the work (3) in each machining step, it is adsorbed and the distance is restored again. Ascend by (c) (S4), then move in the work feed direction (right) by a distance (d) corresponding to one pitch (P) of work feed (S5),
After descending again by the distance (c) (S6), each suction cup (51) abandons each work (3).

Then, the work (3) at the end (rightmost end) in the feeding direction
Fall into the storage box (5), and the other works (3) are placed on the lower die (2a) of the next process after one process.

Then, the arm (49) moves up again by the distance (c) (S7), and then moves in the direction (left) opposite to the feed direction by the distance (e = P-b) to the retracted position of the arm (S8). Then, it descends by a distance (a) reaching a predetermined standby height (S9), returns to the arm retreat position, and stops to prepare for the next press working.

Distances (b), (d), and (e) corresponding to the lateral feed amount in the above steps (S2), (S5), and (S8), and each step (S1)
(S9) and the distances (a) and (c) corresponding to the ascending / descending amount of each step (S3) (S4) (S5) (S6) (S7) are the second motor (31) and the third
By numerically controlling the motor (41), it is accurately controlled to a predetermined value.

If necessary, the lock pin (26) is removed from the swing frame (18) from which all the arms (49) have been removed, and the oil cylinder (25) is shortened to remove the swing frame (18). After swinging to the retracted position facing the lower front, insert the lock pin (26) into the front fixing hole (20) and the locking hole (17) that overlap at that time, and attach the swing frame (18). It is fixed to the lifting frame (14) and the swing frame (18) together with the lifting frame (14) is lifted by the first motor (11) as shown by the imaginary line in FIG. Since the front is open, the press die (2) can be easily replaced.

When the number and size of the press dies (2) are different from those of the conventional press dies, the number of arms (49) corresponding to the number of the press dies (2) is changed to the respective press dies on the rail (47). The work feed pitch (P) may be changed by changing the numerical value of the numerical control while mounting the respective parts corresponding to (2).

The suction cup (51) is slidably supported on the arm (49) through a coil spring which exerts an appropriate compressive force in the vertical direction in which the suction cup (51) is pressed against the work (3). , When a work (3) is taken, a plurality of arms (49) are simultaneously lowered by the same distance (c) with the lifting means (B),
At this time, the descending amount (c) of the arm (49) is set to be slightly larger than the distance between the lower surface of the suction cup (51) and the upper surface of the work (3) when the arm (49) is in the raised position, Sucker (51) is the work (3)
When sucking onto the workpiece, the suction cups (57) are slightly moved in the vertical direction so that the suction cups (51) are pressed against the work (3) and the dimensional error between the suction cups (51) and the work (3) is reduced. It is better to absorb it.

Further, the number and arrangement of the suction cups (51) attached to the arm are set in accordance with the size of the work (3), for example, the work (3).
When the size is small, 1 or 2
It is advisable to appropriately change the number so that the total number becomes 4 or the like.

The supporting means (C) for supporting the lifting plate (35)
The substrate (6) fixed to the press device (1) and the lifting means
(A), the elevating frame (14), the swing frame (18), the oil cylinder (25), etc., but as shown by the phantom line in FIG. 52) A trolley (55) having wheels (53) rolling on the top and a support (54) for supporting the lifting plate (35) so that it can be raised and lowered. ), So that it can be shared by a plurality of pressing devices (1). In this case, an appropriate detent between the floor (52) and the carriage (55) should be used to prevent the carriage from moving during operation.
It is better to provide (not shown).

In the press working using the above-mentioned work feeding device, as shown in FIGS. 6 to 8, the number of press dies, that is, the die pitch (P) according to the number of working steps, the proper suction position of the work, and Each distance controlled in each step (S1) to (S9) depending on the drawing depth (workpiece release dimension), etc.
(a) to (e) have values unique to one set (set) for the press die for the required processing.

Therefore, one of the outlets (E) for connecting the electric wiring or the like to one of the lower dies (2a) of the plurality of press dies (2) for the required processing which constitutes one set, for example, a jack ( 56), and connect each male connection terminal (5
7) are short-circuited as required, and the degree of short-circuit between the terminals (57) is output by a code signal or the like for identifying the required processing or press die set (set) (see FIG. 9).

An electric control circuit (not shown) for numerically controlling the second motor (31) and the third motor (41) includes a plurality of press dies for various press workings, that is, a set of dies for required press workings. The values of the moving distances (a) to (e) corresponding to the respective steps (S1) to (S9) unique to the are registered in advance (stored in a memory device etc.), and this control circuit is By inputting a code etc. that identifies the press die set, each step of the press set corresponding to the code (S1) (S9)
The distances (a) to (e) at are selectively controlled.

The electric control circuit for numerically controlling the second motor (31) and the third motor (41) has another outlet (E), for example, a plug (58), which is connected to the jack (56) of the outlet (E). ) Is connected via the cable (59) and this plug
(58) is a male contact (57) of the jack (56) provided in the press mold, and by being combined with the female contact (60) of the plug (58), the jack (56) A code signal is generated and input to the electric control circuit according to the short circuit between the terminals (57) provided on the.

As a result, one set of a plurality of press dies is exchanged, and the plurality of arms (49) are moved to the required positions of the rail (47) according to the number of the press dies and the die pitch (P) of the one set. After that, the motor (3) is connected to the jack (56) provided on one of the molds of the set.
1) By simply connecting the plug (58) of the electric control circuit that numerically controls (41), it becomes possible to control the movement amount of the lifting plate and the moving plate that is unique to the set of the press mold, and immediately,
The press work can be started.

[0043]

According to the present invention, the following effects can be obtained. (a) When changing the type of processing work, it becomes unnecessary to input adjustments and control data, and workability of mold replacement is improved. (b) Since data unique to one set of molds is selected by the code set for the mold, erroneous input and operation can be prevented, and electrical knowledge and skill are not required to replace the mold set.

[Brief description of drawings]

FIG. 1 is a partially omitted side view of a device of the present invention.

FIG. 2 is a partially omitted front view of the device of the present invention.

FIG. 3 is an enlarged sectional view taken along line XX of FIG.

FIG. 4 is a sectional view taken along line YY of FIG.

FIG. 5 is a diagram schematically showing a movement trajectory of an arm.

6 is a cross-sectional plan view similar to FIG. 3 in the case of using two press dies.

FIG. 7 is a cross-sectional plan view similar to FIG. 3 when the number of press dies is three.

FIG. 8 is a cross-sectional plan view similar to FIG. 3 when four press dies are used.

FIG. 9 is a cross-sectional view schematically showing a socket in which contacts of a circular metal socket are arranged linearly.

[Explanation of symbols]

(1) Press machine (2) Press die (2a) Lower die (2b) Upper die (3) Work piece (4) Supply box (5) Storage box (6) Board (7) Bracket (8) First screw rod (9) ) Bearing (10) Sprocket (11) First motor (12) Sprocket (13) Chain (14) Lifting frame (14a) Side plate (14b) Rear plate (15) Nut (16) Rail (17) Locking hole (18 ) Swing frame (18a) Side plate (19) Axis (20) Front fixing hole (21) Rear fixing hole (22) Upper plate (23) Lower plate (24) Bracket (25) Oil cylinder (rotating means) ( 25a) Piston rod (26) Lock pin
(Fixing means) (27) Second screw rod (28) Bearing (29) Sprocket (30) Bracket (31) Second motor (32) Sprocket (33) Guide sprocket (34) Chain (35) Lift plate (36) Nut (37) Third screw rod (38) Bearing (39) Sprocket (40) Bracket (41) Third motor (42) Sprocket (43) Chain (44) Guide (45) Moving plate (46) Nut (47) Rail ( 48) Mounting groove (49) Arm (49a) Base plate (50) Fixing bolt (Fixing means) (51) Sucker (Suctioning means) (52) Floor (53) Wheel (54) Support (55) Truck (56) Jack (57) (60) Contact (58) Plug (59) Cable (A) (B) Lifting means (C) (C ') Supporting means (D) Lateral moving means (E) Outlet

Claims (1)

[Claims] 1. An elevating plate slidably provided in a vertical direction on a supporting means provided in front of or behind a pressing device; an elevating means provided on the supporting means for elevating the elevating plate; and an elevating plate. A movable plate slidably mounted in the left-right direction, a lateral moving means provided on the elevating plate and moving the movable plate in the left-right direction, a rail fixed to the movable plate, which faces in the left-right direction, and the rail. A plurality of arms, each of which is slidably fitted in the longitudinal direction thereof and provided with a work suction means at a tip end extending substantially horizontally in a direction orthogonal to the rail, and the arms being arranged at arbitrary positions on the rail. The fixing means for fixing with, and a plurality of press dies installed between a plurality of arms, so as to be able to determine the movement amount of the lifting plate and the moving plate specific to the press dies at the time of press working. If the connection terminals are connected St, city automatic workpiece feeder for a press device, characterized in that it comprises a.