JPH0292424A - Transfer feeder - Google Patents

Abstract

PURPOSE:To obtain a transfer feeder surely possible to hold or release a work by linking feed bars to the vertical motion of an operating bar, approaching them to each other or separating them from each other at the falling position and pushing down the operating lever linking it to a press. CONSTITUTION:The transfer feeder is provided with holding clicks 26, 27 for the work w and feed bars 25. A carrier 15 is installed so that it can move vertically to a movable rest 2 on a pedestal 1. An operating lever 35 is set on the movable rest 2 so that it can move vertically through a carrier 15. A cylinder 37 is installed to hold up the carrier 15 through a link mechanism 42 pushing up link mechanisms 39, 42 and operating lever 35 linking to a vertical motion of the operating lever 35 and approaching the feed bars 25, 25 to each other or separating them from each other at the falling position. The operating lever 35 is made up so that it is pushed down linking to a press, etc. By this method, it is possible to give a transfer feeder to surely hold and release a work.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a transfer feeder device used to transfer a workpiece from one station to the next in a press or other automatic machine. In a press machine, when a workpiece supplied to a mold is taken out after processing, or as a transfer feeder device that sequentially transfers a workpiece to a plurality of molds arranged in a row, it extends in parallel to the workpiece transfer direction, and A pair of feed bars are provided with a plurality of sets of gripping claws attached to face each other, and the feed bars are provided with reciprocating motion in the transfer direction, lateral movement to open and close the gripping claws, and vertical movement to lift the workpiece. There are known devices equipped with actuating means for performing the
(See Publication No. 75).

Problems to be Solved by the Invention However, the conventional transfer feeder apparatus of this type has problems such as the structure of the actuating means for performing each of the above operations is complicated, the apparatus is large, and the manufacturing cost is high. At present, it is quite limited in practical terms.

The present invention has been made in view of the above circumstances, and provides a transfer feeder device in which the structure of the operating means is simple, the entire device can be downsized, and it can be easily installed and removed from press machines and other automatic machines. The purpose is to provide.

Means for Solving the Problems The configuration of the present invention adopted to achieve the above object includes a pair of gripping claws extending parallel to the workpiece transport direction and having a plurality of sets of gripping claws attached to face each other. A transfer feeder device comprising a feed bar, a movable table mounted on a base so as to be movable back and forth in the transfer direction, and a movable table provided to be movable up and down with respect to the movable table, and both of the feed bars. a carrier attached to be movable laterally so as to approach or separate from each other; an operating rod that is attached to the movable base so as to be movable up and down and extends upward through the carrier; A link mechanism that brings the feed bars closer to each other and moves them apart in the lowered position, and a cylinder that pushes up the operating rod and lifts the carrier via the link mechanism, and the operating rod is pushed down in conjunction with a press or other machine. It is characterized by being configured so that it can be used.

It is advantageous to provide auxiliary spring means for biasing the feed bars towards each other.

According to the transfer feeder device configured as described above, both the feed bars move upward together with the carrier in conjunction with the vertical movement of the operating rod, and move toward or away from each other in the lowered position. lateral movement to open and close the gripping claws. Therefore, the workpiece can be reliably gripped or released at a predetermined position. Note that if an auxiliary spring means is provided to urge both feed bars toward each other, the workpiece can be gripped more reliably.

Furthermore, when the cylinder is switched to a non-operating state, both the feed bars can be moved two-dimensionally on a plane.

Embodiments Hereinafter, embodiments of the present invention will be described based on the drawings. The drawings show an example in which the present invention is implemented for transporting a workpiece W in a press machine.

Reference numeral 1 denotes a base, and reference numeral 2 denotes a movable table, which are placed on guide rails 3 disposed above the base 1 via bearings 4 (see FIG. 3) so as to be able to reciprocate in the transport direction of the workpiece W. As shown in FIG. 2, the movable base 2 has a connecting bin 5 protruding from the bottom.
A reciprocating device 6 operatively connected to the connecting bin 5 allows it to be reciprocated in the transfer direction.

The reciprocating device 6 includes a double-acting air cylinder 7.7 attached to the base 1 and its piston door a.

7a, a pinion 9 that meshes with the rack 8, a rotating shaft 10 formed integrally with the pinion 9 and rotatably supported on the base 1, and a rotating shaft 10 at the lower end of the rotating shaft 10. It consists of a series of cranks 11 and a rod 12 whose one end is pivotally connected to the crank 11 and the other end is pivotally connected to the connecting pin 5. After converting it into a swinging motion of 11, it is converted to a linear reciprocating motion via a rod 12, and the movable base 2
The reciprocating movement is made in the transfer direction.

Note that the reciprocating device 6 is not limited to a rotating structure, and may employ a feed screw or other appropriate linear reciprocating mechanism.

Reference numeral 15 denotes a key of a feed bar 25.25, which will be described later, and has support shafts 16.17 fixedly protruding from the bottom of both front and rear ends and extending in the vertical direction, and the support shafts 16.17 are fitted into the movable base 2. Direct-acting ball bearings 20.2 are installed in the vertical holes 18 and 19, respectively.
1, it is attached to the movable base 2 so as to be vertically movable. The carrier 15 has two support shafts 22, 23 which are disposed laterally and project from both sides.

25.25 is a pair of feed bars, both feed bars 25.25 extend in parallel to the transport direction of the workpiece W, and have two sets of gripping claws 26.26 and 27.25 facing each other at their tip portions.
27 are attached at regular intervals P. The interval P is set according to the feed pitch of the workpiece W. In addition, two cylindrical sleeves 29.30 are attached to the supports 28°28 that fixedly support the rear portions of both feed bars 25.25.
are fixedly protrudingly provided, and the cylindrical sleeves 29 and 30 are slidably fitted to the support shafts 22 and 23, respectively, to connect the support body 2.
8.28 is attached to the carrier 15 so as to be laterally movable. Then, both the feed bars 25° 25 move toward or away from each other while maintaining a parallel state, and the gripping claws 26, 26 and 2
7. Open and close 27.

Further, both feed bars 25, 25 are connected to support shafts 22, 23
The gripping claws 26, 26 and 27.27 are biased toward each other by push springs 31, 32 fitted in the gripping claws 26, 26, 27, and 27.

An operating rod 35 extends vertically through the carrier 15, and is slidably inserted into a sleeve 36 provided on the carrier 15.The lower end is connected to the piston 38 of an air cylinder 37 attached to the movable table 2, and the upper end is connected to the piston 38 of an air cylinder 37 attached to the movable base 2. bracket 39 connected to
A bearing 40 is rotatably attached to. The bearing 40 is pushed down by an actuating arm 41 that is linked to the ram of the press machine, as will be described below. on the other hand,
The near cylinder 37 only acts to push up the operating rod 35, and becomes free when the operating rod 35 is lowered.

In addition, as shown in FIG. 3, the bracket 3
9 and the support body 28 of each feed bar 25 are links 42
The carrier 15 moves up and down in conjunction with the up and down movement of the operating rod 35, and in its lowered position, both feed bars 25, 25 are brought closer together or separated, and the gripping claws 26, 26 and 27 .27 is designed to open and close.

The transfer feeder device configured as described above is used attached to a press machine, and the operating arm 41, which moves up and down in conjunction with a press ram (not shown), comes into contact with the bearing 40 when descending, and the bracket 39 The operation is started by pushing down the operating rod 35 through the lever. below,
Its operation will be explained with reference to FIG.

In FIG. 4(a), the operating rod 35 is in the raised position pushed up by the air cylinder 37, and both feed bars 25.
25 approach each other, and as shown in FIG.
, 26 are gripping the workpiece W to be processed next, and the gripping claws 27, 27 are gripping the workpiece W after processing, and the machine is ready for the next process. At this time, the actuating arm 41 is spaced apart from the bearing 40. Also,
Both feed bars 25, 25 are urged toward each other by push springs 31, 32, and both gripping claws 26, 2
Work W according to 6 and 27.27.

and W, ensuring secure grip.

In this state, the movable base 2 moves in the transfer direction (base 1 side),
The workpiece W is moved above the mold 50 (see FIG. 1), and at the same time, the workpiece W is moved to a discharge position (not shown). Subsequently, as shown in FIG. 4(b), the actuating arm 41 descends and comes into contact with the bearing 40, and the bracket 3
When the operating rod 35 is pushed down through the carrier 1
5 moves to the lowered position where it abuts and is supported by the movable base 2, and then, as shown in FIG. 4(C), both feed bars 2
5.25 are moved laterally away from each other against the force springs 31.32. And the gripping claw 26
．． 26 releases the workpiece W and places it on the mold 50, and at the same time, the gripping claws 27 and 27 release the workpiece W2 and drop it into a discharge chute (not shown). Subsequently, while the movable table 2 moves backward (leftward in FIG. 1) with both feed bars 25 and 25 in the open position and is on standby, the workpiece W is
, press processing is performed.

When the machining of the workpiece W is completed, the air cylinder 3 moves upward as the operating arm 41 rises in conjunction with the rise of the press ram.
Pressurized air is supplied to 7 to push up the operating rod 35. By pushing up the operating rod 35, both feed bars 2 are
5.25 approach each other, and the gripping claws 26, 26 grip the workpiece W to be processed next, and the gripping claws 27, 27 grip the workpiece W after processing (see Fig. 4(b)). ). Subsequently, the carrier 15 is pulled up to the raised position, lifts up the workpiece W held by the gripping claws 26, 26 and the processed glue W held by the gripping claws 27, 27, and returns to the position shown in FIG.
Return to position a). Thereafter, the same operation as above is repeated.

Although the above embodiment describes the case where the workpiece W supplied to the mold 50 is taken out after processing, it is also possible to increase the number of gripping claws and sequentially transfer the workpiece W to a plurality of molds arranged in a row. can.

Furthermore, when the air cylinder 33 in the above embodiment is switched to the non-operating state and the piston 38 is freed to release the pushing up action, the carrier 15 does not move up and down and both feed bars 25 and 25 move as shown in FIG. 4(b). Repeat the operation shown in C). Therefore, there is no lifting operation of the workpiece W,
It becomes possible to move the workpiece W in parallel on the same plane.

Effects of the Invention Since the present invention is configured as described above, it produces the following effects.

Although the structure of each actuating means is simple, it is possible to perform three-dimensional movement by lifting and moving the workpiece.

Both feed bars are linked to the vertical movement of the operating rod, and in their lowered positions approach or separate from each other to open and close the gripping claws, so that the workpiece can be gripped and released reliably.

Since the operating rod is pressed down in conjunction with a press machine or other automatic machine, the opening/closing operation of the first gripping claw is synchronized with the machine, and no timing error occurs.

Moreover, since the present invention is independent from the press machine or other automatic machine to which it is assembled, it is extremely easy to install and remove, and setup changes can be carried out efficiently.

Furthermore, by configuring the cylinder that pushes up the operating rod to be able to be switched to a non-operating state, it is possible to move the workpiece two-dimensionally on the same plane without lifting the workpiece.

[Brief explanation of the drawing]

1 is a plan view of a transfer feeder device according to the present invention, FIG. 2 is a cross-sectional view taken along line 2-2 in FIG. 1, FIG. 3 is a cross-sectional view taken along line 3-3 in FIG. Figure 4 (a) to (C
) is an explanatory diagram showing the same operation order. 6...Reciprocating device 16.17...Support shaft 25...Feed bar 28.29...Support body 31.32...Press spring 35...Operating rod 37...
・Air cylinder 39... Bracket 41... Operating arm 42... Link W (W,, W,)...
・Workpiece 15...Carrier 22.23...Support shaft 26.27...Gripping claw

Claims (3)

[Claims] (1) A transfer feeder device including a pair of feed bars 25, 25 extending in parallel to the transfer direction of the workpiece W and having a plurality of pairs of gripping claws 26, 27 attached to face each other, a movable table 2 placed on a base 1 so as to be movable back and forth in the transfer direction; a movable table 2 provided to be movable up and down with respect to the movable table 2;
a carrier 15 that is attached to be movable laterally so that the feed bars 25, 25 approach or separate from each other; and an operating rod 35 that is attached to the movable table 2 so that it can be moved up and down and extends upward through the carrier 15. , link mechanisms 39, 42, 42 that move the feed bars 25, 25 closer to each other and move them apart in the lowered position in conjunction with the vertical movement of the operating rod 35; via the carrier 1
5, and the operating rod 35 is configured to be pushed down in conjunction with a press machine or other machine. (2) The transfer feeder apparatus according to claim (1), further comprising spring means 31 and 32 for urging the feed bars 25 and 25 toward each other. (3) Claim (2) wherein the cylinder 37 is configured to be able to switch to a non-operating state in which it does not push up the operating rod 35.
) described transfer feeder device.