JP2564856Y2 - Sizing device for saw cutting machine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sizing device for a saw cutting machine for precisely sizing a material to a cutting position in order to obtain a required length of cut.

[0002]

2. Description of the Related Art Conventionally, a sizing device in various sawing machines such as circular saws and band saws and other saw cutting machines is provided in front of a processing position of the material and is capable of gripping the material and moving in the material feeding direction. Feeding means that is a size vise, a size control circuit that controls the size vise to cut the material moved based on the set material processing value, and measures the amount of material movement provided in the size vise. Length measuring means such as a rotary encoder, a slip detector for detecting slip generated between the fixed-size vice and the material at the time of feeding, and a detection signal from the slip detector. And a correction circuit for correcting the amount of movement of the material by outputting the correction value to the sizing control circuit.

At this time, the slip detector comprises a rotating body and another rotary encoder, and when the material is gripped and moved by the fixed-size vise, the rotating body provided in the fixed-size vise is used for the material. A slip generated between the fixed-size vice and the material at the time of material feeding is detected by another rotary encoder as a rotation value of the rotating body while holding the pressure between the side surface and the rear surface. is there.

[0004]

However, the rotating body provided for detecting the slip between the material and the fixed-size vise has a problem that the detection accuracy is reduced when worn. In addition, when the rotating body rotates, it is easy to slip because the material surface has many black surfaces, and if a slip occurs between the rotating body and the material, it is difficult to detect the slip amount, There were problems with the reliability of the detector.

[0005]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems. In order to feed a material to a cutting position, the material can be clamped and the cutting position can be adjusted. A size vice capable of reciprocating in the front-rear direction in which the material approaches and separates from each other, and a slip detecting means for detecting a slip amount of the material relative to the size vise provided in the size vise. In the apparatus, the fixed-size vice is a front vise provided in front of the cutting position and has a configuration in which a contact portion capable of contacting a front end surface of the material is provided. The sensor comprises a sensor for detecting a dimension between a front end face and the contact portion of the front vise.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a block diagram of a sizing control device according to the present invention, and FIG. 2 is an explanatory view of a mounting state of a slip amount detector in FIG. The sizing control device 1 mainly includes a sizing control circuit 3, a material feeding unit 5, a slip amount detector 7, and a correction circuit 9.
And a length measuring means 11 and a cutting length setting device 13. In this embodiment, the material feeding means 5 grips (clamps) the front end of the material W with a fixed-size vise (front vise) 5 provided in front of the cutting position of the material W in the present embodiment and capable of moving back and forth. And is movably provided in the material feeding direction P.

As shown in FIG. 2, the front vise 5 is provided with an appropriate contact portion 5F which can contact the front end face a of the material W. In the present embodiment, the slip amount detector 7 is an operation transformer, and is provided in the front vise 5.
And the slip amount s generated between the front vise 5 and the material W when mounted opposite to the front vise, that is, the dimension between the contact portion 5F of the front vise 5 and the front end face a of the material W is detected. In this embodiment, the length measuring means 11 comprises a pinion 15 rotatably provided on the front vise 5 and a rotary encoder 17 provided on the axis of the pinion 15.
5 meshes with a rack 15A provided on the saw cutting machine body,
Since the rotation is caused by the movement of the front vise 5, the rotation is converted into an electric signal of the rotary encoder 17 and is fed back to the sizing control circuit 3 as the movement amount of the front vise 5.

Next, as shown in FIG. 3A, the material W is fed to a reference position m at the time of feeding, and as shown in FIGS. The material W is held in the feeding direction P by the rotation of the holding roller 21 and the required trimming amount is adjusted by the trimming roller.
The length is measured by the laser 23. When the required trimming amount c of the material W is measured as shown in FIG. 3C, the material W is fixed by the main body vise 25 and cut at the cutting position d.

Next, as shown in FIG.
Moves to clamp the front end of the material W. FIG.
As shown in (B), when the front vise 5 clamps the material W in a state where the contact portion of the front vise 5 contacts the front end face of the material W, the main body vise 25 is loosened. As shown in FIG. 4 (C), the front vise 5 draws out the fixed length L of the material W = cut length + cut allowance and cuts the material. The product cut from the material W is moved by the front vise 5 and dropped, or dropped into a fixed position simply by loosening the front vise 5. Further, the product length measurement is performed again for the next product cutting, and when the required number of products is cut, the saw cutting machine stops.

By the way, when the material W is clamped and moved by the front vise 5 and a slip occurs, a fixed size defect occurs and a defective product is generated.
Is provided in the front vise 5 so as to face the front end face (cut surface) of the workpiece W. The slip amount s of the material W is detected, and the front vise 5 is extraly moved forward by the slip amount s. The cutting is started after being electrically confirmed by the rotary encoder 17. If the material W deviates from the front vise 5 by a certain amount or more, the saw cutting machine stops.

Accordingly, the sizing control device 1 prevents the occurrence of a cutting failure due to the sizing failure, apart from the cutting failure of the cutter, and detects the slip with reference to the front end surface (cut surface) of the raw material W. By providing the means, the reliability is improved as compared with the conventional detection means based on the side surface or the rear surface of the material W. Also, as the trend of the times, product flaws often become a problem, The generation of a flaw by the clamp of No. 5 can be prevented by lowering the clamping force.

It should be noted that the present invention is not limited to the above embodiment, but can be implemented in other aspects by making appropriate design changes. For example, a slip detector is a touch sensor, A known detector such as a switch or a piezoelectric element may be used. Further, instead of the correction after the end of the material feeding, the correction of the slip amount between the front vise 5 and the material W may be performed each time a slip occurs.

[0014]

[Effects of the Invention] As can be understood from the above description of the embodiment, in short, the present invention can clamp the material (W) in order to feed the material (W) to the cutting position (d). A fixed-size vise that can reciprocate in the front-rear direction that approaches and separates from the cutting position (d); and a slip detecting means for detecting a slip amount of the material (W) with respect to the fixed-size vise. In a sizing device for a saw cutting machine provided in a dimensional vise, the dimensional vise is a front vise provided in front of the cutting position (d) and is capable of contacting a front end face of the material (W). The slip detecting means includes a sensor for detecting a dimension between a front end surface of the material (W) and the contact portion of the front vise.

As is apparent from the above configuration, in the present invention, the material W is clamped to perform the material feeding operation by the front vise 5 which is movably disposed in front of the cutting position d. The front vise 5 is provided with a contact portion capable of contacting the front end surface of the material W, and detects a dimension between the front end surface of the material W and the contact portion of the front vise 5 as slip detection means. Sensors are provided.

Therefore, according to the present invention, the material W is clamped by the front vise 5 while the front end face of the material W is in contact with the contact portion of the front vise 5, and the front vise 5 is moved forward. If a slip occurs between the front vise 5 and the material W during the material feeding operation, the contact portion of the front vise 5 and the front end face of the material W are slightly separated from each other, and the separated dimension is detected by a sensor. Therefore, the slip amount can be corrected, and accurate sizing can be performed.

That is, in the present invention, since the slip amount is detected by detecting the dimension between the contact portion of the front vise and the front end face of the material W, the sensor for detecting the slip amount is used. The slip amount does not occur between the material and the material W, and the slip amount can be accurately detected.

[Brief description of the drawings]

FIG. 1 is a block diagram of a sizing control device according to the present invention.

FIG. 2 is an explanatory view of a mounting state of a slip amount detector in FIG. 1;

FIG. 3 is an explanatory diagram of a material supply and trimming length measurement and a cutting operation sequence of the material of the saw cutting machine.

FIG. 4 is an explanatory view of a product length measuring and cutting operation sequence of a material of the saw cutting machine.

[Explanation of symbols]

 Reference Signs List 1 sizing control device 3 sizing control circuit 5 front vise 7 operating transformer 9 correction circuit 11 length measuring circuit 17 rotary encoder

Claims (1)

(57) [Scope of request for utility model registration] 1. In order to feed a material (W) to a cutting position (d), the material (W) can be clamped and can reciprocate in a front-rear direction approaching and separating from the cutting position (d). Wherein the size vise is provided with a slip detecting means for detecting a slip amount of the material (W) with respect to the size vise. Is a front vise provided in front of the cutting position (d), and is provided with a contact portion capable of contacting a front end surface of the material (W). ), Comprising a sensor for detecting a dimension between a front end surface of the front vise and the contact portion of the front vise.