JPS6130316A - Material feed device of cutting machine - Google Patents

Abstract

PURPOSE:To eliminate generation of residual material and realize certain clamping of a vice by providing a main vice in the rear of the material feed direction, with a cutting part interposed between itself and a feed vice located ahead, and letting said feed vice hold the front end of material and advance to feed the material according to the cutting length. CONSTITUTION:During cutting, a feed vice 13 is positioned in A and material W is held between a main vice 12 and the feed vice 13, while after cutting, the vice 13 advances by required distance, for example, more than the breadth of a mouth piece 13a while holding the cut off material piece W' and reaches position B. There, releasing the material piece W', the vice 13 promptly passes through the cutting part and retreats to position C and holds the front end part of the material W. At the same time, the main vice 12 is released and the feed vice 13 is advanced to the original position A to feed material, then the main vice 12 is clamped to perform the next cutting. Accordingly, even if the cutting length of material is small, the material piece W' is not left in both vices at the time of the next cutting and the length of residual material comes to be very small, therefore, clamping action is always certain and the yield rate is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a material feeding device in material cutting machines such as various saw machines and grindstone type cutting machines.

<Prior art> For example, as a device for feeding workpiece material to a bandsaw machine,
Conventionally, there is a device as shown in FIG. That is, base 1
With respect to the upper main vise 2, a slideable feed vise 4 is moved forward and backward by a cylinder 5 on a rail 3 laid in the material feeding direction, and the material W is clamped by the feed vise 4 during the forward movement. It is common to use a device that performs sizing and cutting by feeding the main vise 2 and protruding its front end forward beyond the cutting area by the band saw blade S disposed in front of the main vise 2 (in the material feeding direction). be. According to this conventional device, the feed vice 4. Main vise 2. Since they are arranged in the order of the cutting parts, there is a drawback that there is a residual material of at least the width of the main vise 2.

In order to overcome this drawback, a device as shown in FIG. 5 has been proposed. In this device, the feed vise 4 is disposed at the rear and the main vise 2 is disposed at the front across the cutting site, so that the above-mentioned problem of the generation of residual material is eliminated. However, if the cutting dimension of the material W is set shorter than the mouth width dimension of the main vise 2, the piece of material W' from the previous cutting will remain inside the main vise 2 even when the next material feeding is completed. However, since the material pieces W often have chips attached to them, there is a drawback that the material W is not sufficiently clamped by the main vise 2 during the next cutting.

<Object of the Invention> The present invention has been made in view of the above, and provides a material feeding device for a cutting machine that hardly produces any residual material and does not cause any inconvenience when clamping the material with both vises. The purpose is to provide

<Structure of the Invention> The present invention is characterized by:
A main vise is installed at the rear in the material feeding direction, and a feed vise is placed at the front, and the feed vise can freely slide past the cutting area and grip the front end of the material to cut according to the cutting length. The reason is that the material is fed by moving forward by a certain distance.

<Example> Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a side sectional view of an embodiment of the present invention, and FIG. 2 is a plan view thereof.

On the base 11, a main vice 12 is arranged behind the cutting area by the band saw blade S, and a high speed steel 13 to be fed is arranged in front of it. The main vice 12 and the feed vice 13 can clamp or release the material W by driving the cylinders 12a and 13a, respectively.

The feeding vise 13 is slidably supported on a rail 14 laid on the base 11 along the material feeding direction, and is driven by the material feeding cylinder 15 to move the cutting part to the main vice 12. Pass and approach.

You can leave.

The normal material feeding operation in this embodiment of the present invention will be explained with reference to the time chart shown in FIG. 3 and FIG. 2.

During cutting, the feed vice 13 is positioned as shown in FIG. 2A, and the material W is held between the main HSS 12 and the feed vice 13. After the cutting process is completed, the feed vise 13 moves forward by a required distance, for example, the width of its own die 13H, while holding the cut piece W' of the material, and reaches the position B. Then, the piece of material W' is released and immediately passed through the cutting area and C
The front end of the material W is held in place. At the same time, the main vise I2 is released, the feeding vise 12 is advanced to the original position A to feed the material, and the main vise 12 is tightened to perform the next cutting. Therefore, even if the cutting length of the material is short,
At the time of the next cutting, no needle of the material remains in both vises, and the length of the remaining material becomes extremely short.

In addition, in the above operation, the cutting length of the material is
The cutting process is configured to be carried out only when the width dimension of the nozzle 13'b is smaller than or equal to the width dimension of the nozzle 13'b, and the forward conveying operation of the material piece W' is omitted when the cutting length is longer than the width dimension of the nozzle 13'b. However, in the next material feeding operation, the material piece W' is moved as far forward as □ from the mouthpiece 1'3b, so that it will not remain in the feeding vise 13. This operation selection can be configured to be automatically performed when setting the material cutting length.

When cutting the material W to a length shorter than the cutting distance, the feed vise 13 moves forward by the required distance from the position shown in Fig. 2 This can be done by pinching the front end of the

Although the above description has been made for automatic feeding, manual operation is also extremely convenient and safe for moving the material pieces, as well as cutting position number 1, especially for large materials. □ The above is an example in which the present invention is applied to cutting using a bandsaw machine, but the present invention can also be applied to other saw machines such as a bow saw machine and a nine-N machine, and cutting machines such as a grindstone type cut machine. Needless to say, you can get it. <Effects of the Invention> As explained above, according to the present invention, the main HSS is provided at the rear in the material feeding direction with respect to the cutting area, and the main HSS is provided in front of the main HSS in the material feeding direction.
A feed vise is provided that is slidable in the material feeding direction passing through the cutting area, and the feeding vise grips the cut material piece, conveys it forward, releases it, and then passes it across the cutting area. Since the structure is such that the material is fed while holding the front end of the material, even if the cutting length of the material is short, cut pieces will not remain in the main HSS or feed vise during the next cutting process. Therefore, the clamping operation is always reliable.

In addition, unlike conventional equipment in which the main HSS and feed vise are placed behind the cutting area, there is no residual material in the HSS that is at least larger than the width of the die, significantly improving material yield. do.

[Brief explanation of drawings]

FIG. 1 is a side sectional view of the embodiment of the present invention, FIG. 2 is a plan view thereof, FIG. 3 is an example of a time chart showing the operation of the embodiment of the present invention, and FIGS. 4 and 5 are each of conventional materials. FIG. 3 is a side sectional view of the feeding device. 11 - Base 12 - Raw vise 13 - Feeding vise 14 - Rail 15 - Material feeding cylinder

Claims (2)

[Claims] (1) A main vice mechanism arranged behind the cutting part, and a feed vice mechanism arranged in front of the main vice mechanism, which can move toward and away from the main vice mechanism by passing through the cutting part. Material feed of a cutting machine, characterized in that the feed vice mechanism is configured to feed the material by holding the front end of the material to be cut and moving forward by a distance corresponding to the cutting length. Device. (2) The above-mentioned feeding vice mechanism is configured to perform the next operation of feeding the above-mentioned material after the cutting process is completed, the cut piece is held, conveyed forward, and released. A material feeding device for a cutting machine according to item 1.