JPH0134842B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for detecting bundling defects in a bundling machine.

In particular, with unmanned high-speed fully automatic binding machines, the discovery of poorly bound objects is delayed, resulting in piles of poorly bound objects, and as a result, subsequent production lines must be stopped to dispose of the bound objects. There was a problem that I couldn't solve.

The present invention provides a bundling defect detection device that solves the above-mentioned problems by immediately detecting a bundling defective object.

That is, the present invention provides a guide that moves up and down during bundling, a reciprocating body that is guided by the guide so as to be movable up and down and is provided with a pin that protrudes laterally, and an elastic member that pushes down the reciprocating body along the guide. a claw plate rotatably attached to the guide and having a long hole fitted into a pin of the reciprocating body, the long hole being provided at the lower end when the pin is in the upper position. A claw protrudes laterally from the guide and is formed so that the claw retreats toward the guide when the pin is in the lower position, and the claw remains protruding laterally after binding. The present invention provides a bundling defect detection device including a signal generator that emits a signal indicating a bundling defect when the guide rises.

The apparatus of the present invention will be explained below based on examples.

The device of the present invention shown in FIGS. 1 to 3 comprises a guide 10, a reciprocating body 20, a claw plate 30, a signal generator 40, and a contact rod 50. The guide 10 consists of a frame 101 with a U-shaped cross section whose upper part is closed with a lid 102, and a bracket 1 is attached to a tightening press 60 that moves up and down.
1, and is designed to move up and down together with the press 60. The reciprocating body 20 is constructed by fixing a protruding rod 23 protruding upward from a square column 22 having protrusions 21 on opposing surfaces, and also fixing a pin 24 protruding laterally to the vertical groove 103 of the guide 10. Each protrusion 21 is fitted to guide the guide 10 so that it can move up and down, and the lid 102 of the guide 10 and the prism 2
A coil spring 25 surrounded by a protruding rod 23 between the top and the top of the protruding rod 23 forces the protruding rod 23 downward. Furthermore, the reciprocating body 20 is formed such that the bottom plate 221 attached to the prism 22 is located below the lower surface of the press 60. The claw plate 30 is rotatably attached to the bracket 11 fixed to the guide 10 via a pin 31, and is attached to the reciprocating body 20.
An elongated hole 32 that fits into the pin 24 is provided. The elongated hole 32 is such that when the pin 24 reaches the upper position 24a, a claw 301 provided at the lower end of the claw plate 30 is inserted into the guide 1.
0, and the pin 24 is in the lower position 24b.
The hole shape is formed so that the claw 301 retreats toward the guide 10 when the guide 10 is reached.

The signal generator 40 is attached to the guide 10 via a bracket 41, and is attached to the protruding rod 2 of the reciprocating body 20.
3 comes into contact with (or approaches) the upper position 23a, and when the contact (or approach) time elapses over a certain period of time, a signal (for example, an alarm) of poor binding is issued. Further, as shown by the imaginary line, the signal generator 40 is attached to a fixed frame 62 into which the rod 61 of the press 60 that moves up and down is fitted, and the protruding rod 23 that has come to the upper position 23a is attached to the guide 10.
The signal generator 40 may also be attached to the stand 90 so that a signal indicating poor binding may be generated as soon as the cable approaches the stand 90. Further, the signal generator 40 uses a phototube device (not shown) or a proximity switch (not shown) that senses the moved claw plate 30, protruding rod 23, guide 10, etc. when the claw 301 rises with the guide while protruding laterally. (not shown), etc.

The contact rod 50 is attached to a holder 52 on a fixed frame 62.
The pawl 301 is attached to the tip of the piston rod 511 of the air cylinder 51 attached through the guide 10, and the pawl 301 is pressed down in response to a signal indicating poor bundling and rises together with the guide 10.
It was designed so that it could retreat towards the The contact rod 50 may be a simple rod (not shown) fixed to the fixed frame 62 or the stand 90 or the like.

Next, the operation of the device of the present invention will be explained. The press 60 is lowered to tighten the unbound objects 70 to some extent (this tightening operation may not be necessary). When the press 60 descends, the reciprocating body 20 is pressed down by the coil spring 25, so the pin 24 comes to the lower position 24b. When the bottom plate 221 of the reciprocating body 20 hits the object to be bound 70 and is pushed up, the pin 24 is at the lower position 2.
4b to the upper position 24a, the pawl 301 projects laterally from the guide 10. The claws 301 protruding in the horizontal direction are in a state of approaching or contacting the object to be bound 70, and in this state, a binding machine (not shown)
is activated to bind the claws 301 and the object 70 together with the string 80. When the binding is completed, the claw 301 is raised together with the press 60 and the guide 10. If the string 80 is not tied properly, the claw 301 is not able to rise due to the weight of the object 70 via the string 80. The pin 24 moves from the upper position 24a to the lower position b, and the pawl 301 retreats toward the guide 10 and detaches from the string 80. When the string 80 is tied poorly, the weight of the object to be bound 70 is not applied to the claw 301, so the claw 301 rises while protruding laterally, and the protruding rod 23 of the reciprocating body 20 continues to be located at the upper position 23a. When a certain period of time has elapsed, the signal generator 4
0 will give a signal of poor binding, and
Correspondingly, the contact rod 50 is pushed down and the claw 3
01, the claw 301 retreats toward the guide 10. Since the above operations are repeated, a string that is poorly bound during binding will be immediately detected.

According to the device of the present invention, defective bundling can be detected reliably, easily and quickly, and furthermore, the device of the present invention has the advantage of being simple and inexpensive to manufacture.

[Brief explanation of drawings]

The drawings show an embodiment of the apparatus of the present invention, in which FIG. 1 is a side view, FIG. 2 is an explanatory diagram of a reciprocating body, and FIG. 3 is a sectional view taken along the line X--X in FIG. 2. DESCRIPTION OF SYMBOLS 10...Guide, 20...Reciprocating body, 24...Pin, 24a...Same upper position, 24b...Same upper and lower position, 25...Elastic body (coil spring), 30...Claw plate, 32...Length Hole, 301...Claw, 40...Signal generator.

Claims (1)

[Claims] 1. A guide that moves up and down during binding, a reciprocating body that is guided by the guide so as to be movable up and down and is provided with a pin that protrudes laterally, an elastic body that pushes down the reciprocating body along the guide, and the guide. A claw plate is rotatably attached to the reciprocating body and has an elongated hole that fits into a pin of the reciprocating body, the elongated hole is such that when the pin is in an upper position, a claw provided at a lower end is moved away from the guide. The claws are formed to protrude laterally and retreat toward the guide when the pin is in the lower position, and the guide rises while the claws protrude laterally after tying. A bundling defect detection device comprising a signal generator that emits a bundling defect signal when the bundling defect is detected.