JPS6130239A - Air control type transfer unit - Google Patents

Abstract

PURPOSE:To obtain a transfer unit easily attachable and detachable by performing the reciprocating movement in the transfer direction and the opening and closing of a pair of holding arms independently with an air pressure device and by constituting to provide a time lag in said opening and closing and reciprocation. CONSTITUTION:A pair of holding arms 10, 10 and a set of fingers 11, 11 opposing therewith are provided on the mobile stand 2 which is provided movably in reciprocation in the transfer direction, and the arm 10 is made openable and closable by an air cylinder 14 and the mobile stand 2 is made mobile in reciprocation in the transfer direction by an air loader 5 via crank mechanisms 7, 8. The air cylinder 14 and air loader 5 are motioned at the intervals of a time lag by switchover valves 17, 18 which are operated with linking to the automated machine and after the completion of the opening and closing motions of the arm 10 the mobile stand 2 is made to start. The transfer unit which is easy in attaching and detaching onto the automated machine is thus obtd.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a l.transfer unit used for transporting industrial applications.

Conventional technology In a press machine, a transfer device is used to take out a workpiece supplied to a mold after processing, or to sequentially transfer the workpieces to multiple molds arranged in a row. The machine is interlocked with the machine via a belt system, gear system, or connecting rod, and is designed to be used in soil where synchronized movement with the machine is precisely regulated. For this reason, it is difficult to easily attach or remove it from a press machine, often requiring complicated setup changes, and the equipment is large and expensive, making it impractical from a practical standpoint. The current situation is quite limited.

Problems to be Solved by the Invention The present invention has been made in view of the current situation, and it can be easily installed and removed from a press machine or other automatic machine, and it also simplifies the overall structure of the device and is compact. The purpose is to provide a transfer unit that is designed to

Means for Solving the Problems In order to achieve the above object, the present invention allows the opening/closing operation and the reciprocating movement in the transfer direction of a pair of gripping arms 10.10 for gripping a workpiece to be performed by an air cylinder 14 and an air rotor 5, respectively. The air cylinder 14 and air rotor 5 are configured to be operated independently, and the air cylinder 14 and air rotor 5 are operated with a time lag by switching valves 17 and 18 that operate in conjunction with the machine to which the unit is attached. Features.

Function: There is a time lag between the opening/closing operation of both gripping arms 10.10 and the reciprocating movement in the transfer direction, and both gripping arms 10.10 operate in the transfer direction after the opening/closing operations are reliably completed. Further, the gripping arm 10.10 converts the rotational movement of the air rotor 50 into linear movement by the crank mechanisms 7 and 8, and is reciprocated in the transfer direction.

The drawings show an example in which the present invention is applied to transporting a workpiece W in a press machine. 1 is a base, 2 is a movable base, and the movement is carried out along a guide rail 3 disposed on the upper part of the base 1. A crank 7 and a connecting rod 8 are mounted on a rotary shaft 6 of an air rotor 5, which is mounted so as to be able to reciprocate in the transport direction of the workpiece W, and has a bracket 4 protruding from the bottom attached to a base 1, as shown in FIG. The rotational motion of the air rotor 5 is converted into linear motion and reciprocated in the transfer direction. Two support shafts 9, 9 are fixedly fixed to the movable base 2 so as to pass through the movable base 2 in a direction perpendicular to the direction of movement thereof.

10.10 is a pair of gripping arms, both arms 10.
Reference numeral 10 extends parallel to the direction in which the workpiece W is transferred, and two pairs of fingers j1.11 and 12.12 facing each other are attached to the distal end thereof at a constant interval P. The interval P is the workpiece W
It is set according to the transmission pitch. Both arms 10.1
0 has two cylindrical sleeves 13.13 fixed to the rear bottom, and the sleeves 13.13 are slidably fitted onto the support shaft 9.9 to be attached to the movable base 2, and the movable Piston rod 1 of air cylinder 14 fixed to stand 2
5 are interlocked and connected to each other via two sets of glues 16 and 16, and are opened and closed by approaching and separating from each other while maintaining a parallel state. Thus, the two arms 10, 10 are connected to each other by the air cylinder 14, and the air rotor 5 and the air cylinder 14 are connected to the directional switching valve 17 and the four-way switching solenoid valve 18, as shown in FIGS. 3 and 4. It is connected.

The directional switching valve 17 is arranged so that the spool 17a is switched in conjunction with the piston 14a of the air cylinder 14,
The switching solenoid valve 18 is a switch (not shown) that is turned ON and OFF in conjunction with the vertical movement of the ram (not shown) of the press machine to which this transfer unit is attached.
It can be activated by

The transfer unit configured as described above is used by being attached to the base of a press machine, but as described above, it is operated independently from the press machine by the air rotor 5 and air cylinder 14. In the figure, 20 is a chute that continuously supplies the work W, 21 is a button that separates the work W supplied through the chute 20 one by one and moves it to a predetermined position, 22 is a press mold, and 23 is a machine for processing. The chute for discharging the finished workpiece W is shown.

When the press ram is at the top dead center, the switch is turned on and the switching solenoid valve 18- is switched to the right boat, and as shown in FIG.
A is supplied to the air cylinder 14 and the piston 14.8
is pushed to the left. As a result, both arms 10.10 close together and the fingers 10.10 close together, as shown in FIG.
At the same time, the fingers 12.12 grip the processed workpiece W' located on the press mold 22. continue,
The spool 1 of the directional control valve 17 is linked to the piston 14a.
The air pressure is switched to the position shown in Figure 3, and the compressed air is
．． Air is supplied to the rotor 5 through C, and the air rotor 5
The rotating shaft 8 rotates about 180 degrees. In conjunction with the rotational movement of the air rotor 5, the movable base 2 moves the gripping a.
- The positions where the frames 10 and 10 are indicated by the imaginary lines in FIGS. 1 and 2 #
To retreat with the ox. As a result, the fingers 11.11 and 12.12 move back by a distance corresponding to the distance P, and the workpiece W gripped by the fingers 11.11 is transferred onto the press mold 19, and the fingers 12.12 The workpiece W' gripped by the handler is transferred onto the discharge chute 23.

Next, the press ram descends and the switch turns OFF.
Then, the switching solenoid valve 18 is switched to the left boat, and as shown in FIG. 4, first, pressurized air is supplied from the boat B to the air cylinder 14, and the piston 14a is pushed to the right. As a result, both arms 10.10 are separated from each other and opened, the grips by both fingers 11.11 and 12.12 are released, and the workpiece W is placed on the press mold 22, and the processed workpiece W is It is discharged through the discharge chute 23. Subsequently, the spool 17a of the directional control valve 17 is switched to the position shown in FIG. 4 in conjunction with the piston 14a, and pressurized air is supplied to the air rotor 5 through the bow) D, and the rotating shaft 6 of the air rotor 5 is moved to the position shown in FIG. Approximately 1 in the opposite direction
Rotate 80 degrees.

Interlocking with this rotational movement of the air rotor 50, the movable base 2 moves forward to the position shown by the solid line in FIGS. 1 and 2 while the gripping arms 10.10 remain in the open position. During this time, the press ram further descends to process the workpiece W on the press die 22.

When the machining is completed and the press ram returns to the top dead center again, the above switch is turned on and the same operation as above is repeated again.

Although the above embodiment shows an example in which the transfer unit is assembled into a press machine, it is also possible to use it to transfer a workpiece from one station to the next station in other automatic machines.

Effects of the Invention As is clear from the above description, according to the present invention, the gripping arm 10°10 of the transfer unit is independent of the press machine or other automatic machine in which this unit is incorporated, and is independent of the pneumatic pressure attached to the unit. Since it is configured to be operated by a device, it is extremely easy to attach and detach from a machine, and setup changes can be carried out efficiently, which is very advantageous in terms of use and handling. Moreover, since a means for providing a time lag between the opening/closing operation of the gripping arm 10.10 by the pneumatic device 5.14 and the reciprocating movement in the transfer direction is adopted, the movement of the gripping arm 10.10 is extremely reliable. Further, since the reciprocating movement of the gripping arm 10° 10 in the transfer direction is carried out by converting the near-low 250 rotational motion into linear motion by the crank mechanisms 7 and 8,
At the beginning and end of feeding, the speed gradually decreases and the inertial force becomes smaller.

Therefore, there is an advantage that errors in feed pitch are less likely to occur.

[Brief explanation of the drawing]

FIG. 1 is a plan view of the transfer unit according to the present invention, FIG. 2 is a longitudinal sectional front view of the same portion, and FIGS. 3 and 4 are schematic explanatory views of the actuating device portion. 1...Base 2...Movable base 5...Air rotor 7,8...
Crank mechanism 10...Gripping arm 11.12...Finger 14...
Air cylinder 17.18...Switching valve

Claims (1)

[Claims] 1. A base (1), a movable base (2) provided on the base (1) so as to be movable back and forth in the transfer direction, and a movable base (2) attached to the movable base (2) so as to be openable and closable. a pair of gripping arms (10), (10), and at least one pair of fingers (14), (11) attached oppositely to the gripping arms (10), (10);
The gripping arms (10), (10) are opened and closed by an air cylinder (14) provided on the movable base (2), and the movable base (2) is opened and closed by an air rotor (14) provided on the base (1). 5)
The air cylinder (14) and air rotor (5) operate in conjunction with the machine to which the unit is attached. switching valve (17
), (18), and the switching valves (17), (18)
The air cylinder (14) and air rotor (5) are operated with a time lag, and the gripping arms (10) and (1
The pneumatically controlled transfer unit is configured such that the movable base (2) starts after the opening/closing operation of the pneumatically controlled transfer unit (2) is completed.