JPH0747149Y2 - Locking device for transfer feeder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a lock device for a transfer feeder mounted on a transfer press.

[Conventional technology]

Conventionally, a transfer feeder equipped in a transfer press has a pair of transfer bars that operate in two dimensions and three dimensions, and a work piece is clamped by fingers provided at positions facing these transfer bars to convey the work piece. Is configured.

The transfer bar is driven in a feed direction, a lift direction and a clamp direction by a cam rotated by the power taken out from the power take-out device of the transfer press. A clutch and a brake are provided to control the.

[Problems to be Solved by the Invention] In the conventional transfer feeder described above, when the drive unit in the feeder is to be serviced or repaired, when the clutch of the power take-off device is engaged, the feeder side is braked by the press body side brake. When the clutch of the power take-out device is released, the brake of the power take-out device stops the movement of the feeder, and the worker enters the feeder to perform maintenance and repair.

However, since the brake of the press body and the brake of the power take-out device use a friction plate, the friction plate may slip due to the weight of the transfer bar and the transfer bar etc. may start moving carelessly. There was a problem that could not be safe.

The present invention has been made for the purpose of improving the above problems, and an object thereof is to provide a lock device for a transfer feeder in which a transfer bar or the like does not start carelessly.

[Means and Actions for Solving the Problems]

In order to achieve the above object, the present invention provides a transfer feeder having a pair of transfer bars driven in two-dimensional and three-dimensional directions.
A plurality of locking holes in the moving direction of the transfer bar and a locking plate having a dog formed in each locking hole are provided in a part of a driving mechanism that drives in three-dimensional and three-dimensional directions. A slide member movable along the locking plate by the driving means is provided in the vicinity of the lock member, and a lock pin selectively insertable into the locking hole and the dog are detected in the slide member to detect the lock member. A detector that controls the operation of the lock pin so that the lock pin is inserted into the locking hole at the position where the stop hole and the lock pin are aligned is provided with the transfer bar stopped at any position on the locking plate. The lock pin can be surely locked by inserting the lock pin into the provided lock hole, and the lock pin can be inserted by detecting the dog provided for each lock hole. Easy to insert the lock pin of It can be performed to Make.

〔Example〕

 An embodiment of the present invention will be described in detail with reference to the drawings.

In the figure, reference numeral 1 denotes a transfer press main body, which has a moving bolster 2 which can be freely moved in and out, and a transfer bar 4 of a transfer feeder 3 is provided above the moving bolster 2.

The transfer bars 4 are juxtaposed in parallel with each other in a workpiece conveying direction (not shown), and are fed by a power take-out device (not shown) provided in the press body 1 to a feed direction, a lift direction and a clamp. The lock device 7 of the present invention is installed in the vicinity of the feed drive mechanism 5 and the equalizer bar 6 provided in the lift and clamp mechanism (both not shown). ..

As shown in FIG. 2, the lock device 7 has a locking plate 8 fixed to the feed carrier 5a and the equalizer bar 6.

The locking plate 8 has a large number of locking holes 8a at regular intervals in the longitudinal direction and dogs 8b formed at positions corresponding to the locking holes 8a, and the dogs 8b are movable along the locking plate 8. Further, a detector 9 such as a proximity switch is adapted to detect.

The detector 9 is attached via a bracket 10 to a slide member 7b movably supported on a base 7a of a lock device 7, and a screw rotated by a feed motor 11 is attached to a lower portion of the slide member 7b. The shaft 12 is screwed, and the feed motor 11 moves the slide member 7b along the locking plate 8.

The tip of the slide member 7b has a locking hole for the locking plate 8.
A lock pin 13 that enters the inside of 8a and locks the locking plate 8 is provided so as to face the locking plate 8.

The lock pin 13 is constantly urged toward the locking plate 8 by the compression spring 14 to lock the locking plate 8 by the action of the compression spring 14, and the rear end of the lock pin 13 is connected to the hydraulic cylinder 15. The locking plate 8 is unlocked by the hydraulic pressure supplied from the hydraulic pressure source 18 via the solenoid valve 16 and the conduit 17.

Reference numeral 19 in the figure is a detector for detecting the locked and unlocked states of the lock pin 13.

Next, the operation will be described. When the transfer feeder 3 is stopped during maintenance or repair of the transfer feeder 3, the feed motor 11 is rotated to move the slide member 7b along the locking plate 8.

A detector 9 is provided on the slide member 7b. When the detector 9 detects the dog 8b of the locking plate 8, the solenoid valve 16 changes from the communication position 16a to the drain position 16b by a signal from the detector 9, The oil in the hydraulic cylinder 15 is drained.

As a result, the lock pin 13 is projected toward the locking plate 8 by the action of the compression spring 14 and inserted into the locking hole 8a provided at the same position as the dog 8b, so that the locking plate 8 is fixed. Further, the feed carrier 5a and the equalizer bar 6 of the lift / clamp mechanism are mechanically locked, and it is possible to reliably prevent the transfer bar 4 from inadvertently starting due to its own weight during work.

[Effect of device]

As described in detail above, the present invention provides a lock device for mechanically locking the transfer bar in the vicinity of the drive mechanism for moving the transfer bar in the feed, lift, and clamp directions. Even if you go in for maintenance and repairs, the transfer bar and the drive unit will not move carelessly due to the weight of the transfer bar, and you will be able to work safely.

Also, the dog provided for each locking hole is detected by the detector provided on the slide member side, and the lock pin is inserted into the locking hole at the position where the locking hole and the lock pin match. Since the lock pin can be inserted easily and securely,
Highly safe.

[Brief description of drawings]

The drawings show one embodiment of the present invention. FIG. 1 is a perspective view of the vicinity of a feed drive mechanism, and FIG. 2 is an enlarged perspective view of this apparatus. 3 is a transfer feeder, 4 is a transfer bar, 7b
Is a slide member, 8 is a locking plate, 8a is a locking hole, 8b is a dog, 9 is a detector, and 13 is a lock pin.

Claims (1)

[Scope of utility model registration request] 1. A transfer feeder 3 having a pair of transfer bars 4 driven in two-dimensional and three-dimensional directions, wherein a part of a driving mechanism for driving the transfer bars 4 in the two-dimensional and three-dimensional directions is a transfer bar. 4, a plurality of locking holes 8a and a locking plate 8 having a dog 8b formed for each locking hole 8a are provided, and the locking plate 8 is provided near the locking plate 8 by a driving means. 8 is provided with a movable slide member 7b, and the slide member 7b is provided with a lock pin 13 which is selectively insertable into the locking hole 8a and the dog 8b to detect the locking hole 8a. A lock device for a transfer feeder, comprising a detector 9 for controlling the operation of the lock pin 13 so that the lock pin 13 is inserted into the locking hole 8a at a position where the lock pin 13 matches.