JPH05237572A - Device for automatically feeding work for pressing apparatus - Google Patents

Abstract

PURPOSE:To freely change member and size, etc., of press dies fitted to a pressing apparatus. CONSTITUTION:Based on the number and the work size, etc., of the press die 2 fitted to a pressing apparatus 1, the necessary number of arms 49 provided with a work absorbing means 51 are fixed with a fixing means 50 in the necessary interval to a rail 47 and a lifting means B and a side shifting means D are worked in the necessary order. Then, by combination of the lift of a lifting plate 35 and the side shift of a shifting plate 45, the work 3 completed of the pressing work in each press die 2, is attracted by the work attracting means 51 and sent to the press die 2 for the following process in order. By changing the number of the arms 49 and the fitting position to the rail 47, this apparatus can cope with the arrangement of any press die 2 and general applicability is enhanced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work automatic feeding device for automatically supplying and discharging a work to a plurality of pairs of press dies in a press device.

[0002]

2. Description of the Related Art A work feeding device is provided in a press device having a plurality of pairs of press dies so that a work can be automatically laterally fed to each press die so that a plurality of steps of press working can be simultaneously performed. The press machine is known as, for example, a transfer press.

[0003]

However, the conventional work automatic feed device for a transfer press has a problem that it is not versatile because the work feed pitch, the work size, the number of press dies and the like can be changed in a narrow range. there were.

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.

In view of the above-mentioned problems of the prior art, the present invention is a versatile press device which can freely change the number and size of press dies to be mounted on the press device. The purpose is to provide an automatic work feeding device.

[0006]

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. It is characterized by including a fixing means.

[0007]

Operation: Based on the number of press dies mounted on the press device, the work size, etc., the necessary number of arms having the work suction means at the tip thereof are fixed to the rails at the required intervals by the fixing means, and the lifting means is provided. By operating the lateral moving means in the required order, the combination of the raising and lowering of the elevating plate and the lateral movement of the moving plate, rails and all arms allows the work to be pressed in each press die to be the work suction means. Are adsorbed by and are sequentially sent to a press die for the next process.

By changing the number of arms and the mounting position with respect to the rail, any type of press die can be accommodated, and the versatility is great.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawings show an embodiment of the present invention, in which three sets of press dies are arranged side by side in the press device (1).
(2) is installed, on the left side of the lower mold (2a), a supply box (4) for storing a large number of works (3) and sequentially pushing it upward is installed, and also on the right side, press working is performed. Finished work
A storage box (5) for storing (3) 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 front center of the substrate (6).
A chain (13) is wound around the sprocket (12) of (1).

On both first screw rods (8), nuts (15) fixedly installed on the upper side surfaces of both side plates (14a) of the U-shaped groove-shaped lifting frame (14) close to the front surface of the substrate (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 lifting 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 extends so that the rocking frame (18) moves. 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 up and down 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), and 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) which is 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 it 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) of equal length to the left and right 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 ends of four arms (49) facing rearward is fitted to (48) slidably and detachably from the ends of the rails (47). The arm (49) is attached to the base plate (49
By tightening a pair of left and right fixing bolts (50) screwed to a) and pressing the tips against the bottom surface of the mounting groove (48),
It is fixed at the desired position on the rail (47). Rail (47)
The mounting position of each arm (49) with respect to is such that when the lateral movement means (D) is inoperative, each arm (49) is located between the plurality of press dies (2).
And it is determined so as to be located 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 that when the press device (1) is in operation, the second
An arm (49) that is moved by the motor (31) and the third motor (41)
The motion locus of FIG.

The arm (49) waiting on the side of the lower die (2a) during the press working has the suction cup (51) moved downwardly from the lower die (2a) when the upper die (2b) is lifted up after the press working. It rises to a slightly higher position (S1), then moves to the left by 1/2 pitch of the work feed (S2), and is positioned above the center of the adjacent work (3).

Then, the arm (49) descends (S3) and the suction cup (5
When (1) is pressed against the work (3), it is adsorbed and rises again (S4), then moves to the right by one pitch of the work feed (S5), descends again (S6), and then sucker ( 51) gives up the work (3).

Then, the rightmost workpiece (3) falls into the storage box (5), and the other workpieces (3) are placed on the lower die (2a) of the next step.

Then, the arm (49) is raised again (S7),
Work feed 1/2 pitch left (S8), then descend (S
9), return to the waiting position and stop to prepare for the next press work.

The lateral feed amount in each of the above steps (S2), (S5), (S8), and the ascending / descending amount in each step (S1) (S3) (S4) (S5) (S6) (S7) (S9) Is accurately controlled to a predetermined value by numerically controlling the second motor (31) and the third motor (41).

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 may be changed by changing the numerical value of the numerical control while mounting the respective parts corresponding to (2).

The arm (49) is made of a leaf spring material which is elastically bendable in the vertical direction, and the descending amount of the elevating means (B) when picking up the workpiece (3) is set to be slightly large. Sucker
When the (51) is attracted to the work (3), the arm (49) is elastically bent so that the suction cup (51) is pressed against the work (3).

Also, the number and arrangement of the suction cups (51) attached to the arm are adjusted according to the size of the work, for example, one or two when the work is small, and two before and after when the work is large. It is preferable to appropriately change so that the total number becomes 4.

In the above embodiment, the lifting plate (35)
Supporting means (C) for supporting the substrate (6) fixed to the press device (1), lifting means (A), lifting frame (14), rocking frame (18), oil cylinder (25), etc. However, as shown by the imaginary line in FIG. 1, the supporting means (C ') has wheels (53) rolling on the floor (52), and the lifting plate (35) can be raised and lowered. A trolley (55) having a support body (54) for supporting a plurality of press devices by moving the entire work automatic feeding device along the floor (51).
It may be possible to share it with (1). In this case,
It is preferable to provide an appropriate detent (not shown) between the floor (52) and the carriage (55) so that the carriage does not move during operation.

[0036]

According to the present invention, the following effects can be obtained. (a) The number and intervals of the arms attached to the rails can be freely changed according to the number and size of the press dies to be mounted on the press device. From the case where one or a few large press dies are installed in the press machine to perform the press work by simply changing the lateral feed amount of the It can be widely used until the pressing work described in (1). (b) When exchanging the press die for the press device, by rotating the swing frame to the retracted position and raising the elevating frame, the work automatic feeder does not interfere with the loading and unloading of the press die. Instead, it is convenient (the invention according to claims 2 and 3). (c) By moving the carriage, one workpiece automatic feeding device can be used for a plurality of press devices, and the versatility can be further expanded.

[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.

[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 (A) (B) Lifting means (C) (C ') Supporting means (D) Lateral moving means

Claims (4)

[Claims] 1. An elevating plate slidably provided in a vertical direction on a supporting means provided in front of or behind a press 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. An automatic work feeding device for a press device, comprising: 2. An elevating frame in which a supporting means is vertically slidably mounted on a fixed portion of a press device, an elevating means for elevating the elevating frame provided on the fixed portion, and a pivotal attachment to the elevating frame. The tip end supports the lift plate so that it can move up and down, and a swingable frame that can rotate between a use position where the lift plate enters the press machine and a retracted position where the lift plate is supported outside the press machine, and a lift frame. 2. The automatic work feeding device for a press device according to claim 1, further comprising: a rotation unit provided on the frame and configured to rotate the swing frame between a use position and a retracted position. 3. The automatic work feeding device for a press device according to claim 2, wherein the supporting means includes a locking means for locking the swing frame to the elevating frame at the use position and the retracted position. 4. The automatic work feeding device for a press device according to claim 1, wherein the supporting means is a trolley having wheels that roll on the floor and supports the lifting plate so as to be able to move up and down.