JPH09108935A - Straight line cutter and flying shear method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform a flying shear in a freely setting length while successively transferring it by sending out a linear material, particularly, wire not more than a specific diameter to a shearing work part after correcting it straight while sending it in the lengthwise direction. SOLUTION: A straight line shear X is provided with a transfer means 1 to make a straightly corrected linear material (wire) 5 successively and continuously travel at constant speed, a flying shear means which mechanically cooperates with the transfer means 1 through a motive power transmitting means 2 and has a cutting mechanism to drive a cutting edge unit 30 by cam elements 31 and 36 installed on a shaft and a work control means 4 which detects a tip position of the wire 5 traveling including free setting of a cutting dimension and controls so as to drive and the flying shear means by sending out a detecting signal to the motive power transmitting means 2. The cutting cam 36 and the cutting edge unit sending cam 31 are driven in rotation in synchronism with transfer speed of the wire 5, and the cutting edge unit 30 is moved by a stroke, and the wire 5 is cut by cooperating with a fixed edge by driving a moving edge by the cutting cam 36 at one time in its equal velocity progress section.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses a wire material (particularly, a metal wire having a diameter of 1 mm or less, which is used as a needle-making material, etc.) to straighten the material while feeding it in the length direction (synonymous with work). The present invention relates to a straight line cutting machine which cuts a running length to a predetermined length while sending it to a section and continuously transferring it, and to a running cutting method.

[0002] Here, "cutting" means "shearing" unless otherwise specified.

[0003]

2. Description of the Related Art Conventionally, a wire material (wire coil) wound around a drum and curved is drawn out, straightened through a straight-line machine, sent to a cutting section, and continuously transferred and cut to a predetermined length. A straight line cutting machine is known.

The straight line cutting machine usually has a means (setting means, measuring means, etc.) for cutting the linear material into a predetermined length (fixed length). It is important that it is a running cut that cuts the sent linear material smoothly and accurately and that there is flexibility in setting the predetermined length (cutting dimension).

FIG. 4 (a) is an explanatory view of a cutting mechanism of a conventional example.
Attach the abutting plate to the rod-shaped guide member as shown in
It is known to cut a filament material by abutting a striking plate on the tip of the filament material sent straight. In this case, the predetermined length (setting thereof) is the distance between the abutting plate and the cutting portion. (Temporarily, it is called a butting type. As an example of this improvement, Japanese Utility Model Publication No. 2-39637, "Cutting device for predetermined length of linear machine" can be mentioned.)

Further, as shown in FIG. 4 (b), which is an explanatory view of another conventional cutting mechanism, a linear member which has been linearized and sent out is held by a slider at two points, and the slider is camped and cranked. It is known that a stroke is moved by an element to guide a linear material to a cutting portion to cut it. In this case, the predetermined length (setting thereof) is the movement distance of the stroke. (Temporarily referred to as the fixed-size feed type.)

Further, as a reference example, "straight-running type shear" in Japanese Utility Model Publication No. 64-254 can be cited as a reference example in that the cam element is used to cut the running distance.

[0008]

However, in the above-mentioned abutting type, since the abutting plate abuts on the tip of the linear material, bending is liable to occur with respect to fine wires such as wire, and strict dimensional accuracy is required. Was difficult.

Further, in the above-mentioned constant-dimension feed type, since the feeding speed (constant speed) from the linear machine cannot be maintained as it is, the balance of the cooperation between the linear machine and the cutting machine is likely to be broken, and the wire breakage is caused especially in the cutting of thin wires. And dimensional errors may occur.

Further, although it can be understood that the above-mentioned reference example can cut the plate material or the bar material for a while, the predetermined length (cutting length) is determined by the unique cam (curve), so that It is presumed that the change requires replacing the cam (curve), and when viewed as a straight line cutting machine for linear materials (especially thin wires), it is extremely inconvenient in that it does not have the flexibility to set a predetermined length (cutting length) Is few.

Under these circumstances, the inventor of the present invention, when cutting a wire material, in particular, a metal wire having a diameter of 1 mm or less, which is used as a needle-making material or the like, into a predetermined length, a wire material continuously fed from a linear machine. We have been conducting research into the development of such equipment, with the most important issues being that it is a smooth cutting with smooth and accurate cutting and that there is flexibility in setting a predetermined length (cutting dimension).

The present invention has been made in view of the above circumstances, and eliminates the above-mentioned conventional drawbacks, and continuously cuts a linear material immediately after cutting and cuts it to a predetermined length which can be freely set. An object of the present invention is to provide a straight line cutting machine and a method for cutting between running lines.

[0013]

In order to achieve the above object, a straight line cutting machine of the present invention comprises a transfer means for continuously running a straight line material immediately after being cut and continuously running at a constant speed; A running cutting means having a cutting mechanism mechanically linked thereto via a power transmission means and having a cutting blade unit driven by a cam element mounted axially; a wire rod traveling including a free setting of cutting dimensions And a work control means for detecting the position of the tip end of the workpiece and sending the detection signal to the power transmission means to drive and control the running distance cutting means.

Here, the power transmission means is a clutch brake unit; the cam element mounted on the shaft is gear-connected to the transfer means via the clutch brake unit, and each of them is arranged on one rotary shaft and is disconnected. A cam and a cutting blade unit feed cam; a cutting mechanism included in the running cutting means rotationally drives the cutting cam and the cutting blade unit feed cam in synchronization with the transfer speed of the linear material, and a movable blade and a fixed blade. The stroke of the cutting blade unit equipped with is moved, and the moving blade is moved up and down at the same time as the constant speed traveling section to cooperate with the fixed blade to cut the linear material and return to the movement start position. The work control means is a non-contact type work sizing sensor in which the cutting dimension can be freely set with the distance from the fixed blade end surface of the cutting blade unit as the gauge length, and A detection signal and detects the edge position and sent to the clutch brake unit is for driving and controlling the-fly cutting means.

Further, a running cutting method in a straight line cutting machine, in which the straight-line material immediately after the straightening sent from the straight-line machine is continuously transferred and cut to a predetermined length, is continuously determined. Continuously transferred to the cutting section at a high speed; the tip position of the traveling linear material is detected by the workpiece sizing sensor located at the reference point where the cutting dimension can be freely set, and the detection signal is sent to the clutch brake unit. The power transmission is switched on by means of a switch; in response thereto, a cutting cam and a cutting blade unit feed cam arranged on one rotary shaft are connected to the transfer means through a gear through the clutch brake unit and are connected to each other. It is rotationally driven in synchronization with the transfer speed of the strip material; the cutting blade unit equipped with the movable blade and the fixed blade is moved in accordance with the cam curve of the cutting blade unit feed cam,
At the same time, the moving blade is driven in accordance with the cam curve of the cutting cam, and the moving blade and the fixed blade cooperate to cut the linear material reaching a predetermined length; immediately after cutting The cutting blade unit is returned to the movement start point and the cam shaft is stopped at a fixed position; the linear member and the cutting blade unit are cut while running in a relatively stationary state. .

[0016]

[Operation] The linear material sent from the straight line machine is continuously transferred and received by the cutting section while being transferred, and the linear material runs by the workpiece sizing sensor located at the gauge point where the cutting dimensions can be set freely. Detects the position of the tip of the clutch brake unit and sends the detection signal to the clutch brake unit to switch on the power transmission, and in response to this, the gear is connected to the transfer means via the clutch brake unit to make one rotation. The cutting cam and the cutting blade unit feed cam arranged on the shaft are rotationally driven in synchronization with the transfer speed of the linear material, and the movable blade and the fixed blade are mounted according to the cam curve of the cutting blade unit feed cam. The cutting blade unit is moved, and the moving blade is driven in accordance with the cam curve of the cutting cam at one of the constant speed advancing sections, and the moving blade and the fixed blade cooperate to reach a predetermined length. By cutting the strip material, returning the cutting blade unit to the movement start point immediately after cutting, stopping the cam shaft at a fixed position, and cutting the strip material and the cutting blade unit in a relatively stationary state while running. , A linearized linear material with a predetermined length is processed and manufactured.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A straight line cutting machine which is an embodiment of the present invention will be described below with reference to the accompanying drawings. Wire is considered as the filament material.

FIG. 1 is a schematic view of the structure of a linear cutting machine in a plan view.

FIG. 2 is a schematic side view configuration diagram for explaining the running distance cutting means and the cutting mechanism (or the running distance cutting method).

In all the figures, 1 is a feed roller [transporting means], 2 is a clutch / brake unit [power transmission means], 21 is a clutch, 22 is a brake, 3 is a cutting means for running, and 30 is a cutting blade unit. [Running cutting means], 31 is a cutting blade unit feed cam, 32 is a lower slide, 33 is a fixed blade, 34
Is a return spring, 35 is a support, 36 is a cutting cam, 37 is an upper slide, 38 is a moving blade, 39 is a lever, 4 is a workpiece sizing sensor [work control means], 5 is a linear material (wire), 6 Is an adjusting cam, 7 is an origin return switch, 8 is a connecting gear, 9 is a drive source (motor), 10 is a cam shaft, 11 is a feed roller drive shaft, and X is a linear cutting machine. In addition, reference symbols P and Q in FIG.
Indicates contact points, respectively.

As shown in the figure, the straight line cutting machine (X) of the present invention comprises a transfer means (1) for continuously running the straight-lined material (wire) (5) immediately after being cut at a constant speed; A cutting mechanism mechanically linked with the transfer means (1) through the power transmission means (2) and driving the cutting blade unit (30) by the cam elements (31, 36) mounted on the shaft was provided. A running distance cutting means (3); detecting a tip position of a wire (5) running including a freely set cutting dimension, and sending the detection signal to the power transmission means (2) to cut the running distance cutting means (3). Work control means (4) for driving and controlling 3) is provided.

Here, as a concrete component, the transfer means (1) is a feed roller (1) or an endless belt (not shown).

The power transmission means (2) is a clutch / brake unit (2), which is interposed between a feed roller drive shaft (11) of the feed roller (1) and a cam shaft (10) described later. Gears (8 ... 8) are connected to (10, 11).

The axially mounted cam elements are a cutting cam (36) and a cutting blade unit feed cam (31), which are gear-connected to the feed roller (1) via a clutch brake unit (2). It is arranged on a rotating shaft [cam shaft] (10).

Further, the adjusting cam (6) is mounted on the shaft, and when the cutting blade unit (30) described later returns to the movement start point, the cam shaft (10) is stopped at a fixed position.

The running cut means (3) is provided with the cam element (31,
36), a cutting blade unit (30), a lever (39) and a cutting mechanism which drives these, and the cutting blade unit (30)
Includes an upper slide (37) provided with a movable blade (38) and a lower slide (32) provided with a fixed blade (33), which are integrally assembled via a support (35), and a return spring (34). Is attached.

The cutting mechanism synchronizes the transfer speed of the wire (5) with the cutting cam (36) and the cutting blade unit feed cam (31).
Is rotated to move the cutting blade unit (30) equipped with the movable blade (38) and the fixed blade (33) by a stroke, and at the same time, the movable blade (38) is vertically moved and fixed at one time. The wire (5) is cut in cooperation with the blade (33) to return to the movement start position.

The work control means (4) is located on the transfer line of the wire (5), and the cutting dimension is freely set with the distance from the end face of the fixed blade (33) of the cutting blade unit (30) as the gauge length. Possible non-contact work sizing sensor (4) [Usually a laser sensor is used. ], The tip position of the traveling wire (5) is detected, and the detection signal is sent to the clutch brake unit (2) to drive and control the running distance cutting means (3).

The operation will be described below. FIG. 3 is an explanatory diagram showing the relationship between the displacement and the rotation angle of each contact that is displaced according to each cam curve. As described above, each cam (31, 36, 6) is coaxial (10).

The wire (5) is transferred in the direction of arrow S in FIG. 2 by the feed roller (1) [or the endless belt] driven by the motor (9), and the tip of the wire (5) is fed to the laser sensor (4). ) Is reached.

The detection signal of the laser sensor (4) is sent to the clutch brake unit (2) and the clutch (21).
Is turned on, the brake (22) is released, and the cam shaft (10) starts rotating.

The contact [P in FIG. 2] of the cutting blade unit (30) moves as shown in FIG. 3 (a) following the cam curve of the cutting blade unit feed cam (31), and the contact of the lever (39). [Q in FIG. 2] follows the cam curve of the cutting cam (36) and is shown in FIG.
Move as shown in (b). In FIG. 3, it can be seen that the cam lobe of the cutting cam (36) is set at one time in the constant-velocity traveling section of the cutting blade unit (30) [section C in FIG. 3].

When the end (contact point Q) of the lever (39) is pushed up by the cam crest of the cutting cam (36), the upper slide (37) provided with the moving blade (38) via the fulcrum causes the support (35) to move. ) It is pushed down along the guide, so while feeding the wire (5) and the cutting blade unit (30) at the same speed,
The movable blade (38) and the fixed blade (33) can cooperate with each other to cut the wire (5) reaching a predetermined length while running.

When the cam shaft (10) further rotates, the cutting blade unit feed cam (31) has a cam curve retracting section [Fig. 3].
As shown in section D of (a)], the cutting blade unit (3
0) moves backward and returns to the origin [section E in FIG. 3 (a)]. At that time, the cam ridge of the adjustment cam (6) [section E of FIG. 3 (c)]
Thus, the origin return switch (7) is turned on, the clutch (21) of the clutch brake unit (2) is released, the brake (22) is turned on, and the cam shaft (10) is stopped at a fixed position.

[0035]

The present invention has the above-described structure, and has the following advantageous effects.

(1) Since the linear material immediately after being cut is continuously run at a constant speed and cutting is performed during the running, the adjustment of the cutting section (straight cutting machine) and the straight machine is easy.

(2) The cutting dimension can be freely set (predetermined length) simply by moving the workpiece sizing sensor, and since the measurement is made in a non-contact manner, the portion to be cut of the linear material may be bent. Without, it can be cut with high precision.

(3) In particular, with respect to thin wires (φ1 mm or less) and long objects such as wires, extremely excellent effects are exhibited as compared with the conventional example.

[Brief description of the drawings]

FIG. 1 is a schematic plan view configuration diagram of a linear cutting machine according to an embodiment of the present invention.

FIG. 2 is a schematic side view configuration diagram for explaining a running distance cutting means and a cutting mechanism thereof (or a running distance cutting method).

FIG. 3 is an explanatory diagram showing a relationship between a displacement and a rotation angle of each contact that is displaced in accordance with each cam curve.

FIG. 4 is a schematic side view device configuration diagram of a straight line cutting machine according to a conventional example, in which (a) shows a butting type and (b) shows a constant feed type.

[Explanation of symbols]

 1 feeding roller [transporting means] 2 clutch brake unit [power transmission means] 21 clutch 22 brake 3 running cutting means 30 cutting blade unit [running cutting means] 31 cutting blade unit feed cam 32 lower slide 33 fixed blade 34 return spring 35 Support 36 Cutting cam 37 Upper slide 38 Moving blade 39 Lever 4 Workpiece sizing sensor [Workpiece control means] 5 Wire material (wire) 6 Adjustment cam 7 Home position return switch 8 Connection gear 9 Drive source (motor) 10 Camshaft 11 Feed roller drive shaft X Linear cutting machine

Claims (3)

[Claims] 1. In a straight line cutting machine for continuously cutting a straight-line material sent from a straight-line machine to a predetermined length while continuously transferring it, the straight-line material immediately after the straight-line cutting is continuously run at a constant speed. A cutting means for mechanically cooperating with the transferring means via a power transmitting means and having a cutting mechanism for driving a cutting blade unit by a cam element mounted on a shaft; Workpiece control means for detecting the tip position of the traveling linear material including freely setting the dimensions and sending the detection signal to the power transmission means to drive and control the running distance cutting means. Characteristic straight line cutting machine. 2. The disconnection cam, wherein the power transmission means is a clutch brake unit; the cam elements mounted on the shaft are gear-connected to the transfer means via the clutch brake unit, and are arranged on one rotary shaft. And a cutting blade unit feed cam; a cutting mechanism included in the running cutting means rotationally drives the cutting cam and the cutting blade unit feed cam in synchronism with the transfer speed of the linear material to move the movable blade and the fixed blade. The mounted cutting blade unit is moved by a stroke, and the moving blade is driven up and down at the same time in a constant speed traveling section to cooperate with the fixed blade to cut the linear material and return to the movement start position; A non-contact type work sizing sensor in which the work control means can freely set the cutting dimension with the distance from the fixed blade end surface of the cutting blade unit as the gauge length, and the tip position of the traveling linear material. 2. The straight line cutting machine according to claim 1, wherein the straight line cutting machine detects the occurrence of the electric shock and sends the detection signal to the clutch brake unit to drive and control the running distance cutting means. 3. A straight line cutting method in a straight line cutting machine for continuously cutting a straight line material sent out from a straight line machine to a predetermined length while continuously transporting the straight line material. And continuously transfer it to the cutting section at a constant speed; the tip position of the traveling linear material is detected by the workpiece sizing sensor located at the gauge where the cutting dimension can be set freely, and the detection signal is sent to the clutch brake unit. In response to this, the power transmission is switched on; in response thereto, a cutting cam and a cutting blade unit feed cam, which are gear-connected to the transfer means via the clutch brake unit and are arranged on one rotating shaft, respectively. Is driven to rotate in synchronism with the transfer speed of the linear material; the cutting blade unit equipped with the movable blade and the fixed blade is moved in accordance with the cam curve of the cutting blade unit feed cam, and its speed is constant. The moving blade is driven according to the cam curve of the cutting cam at one time of the row section, and the moving blade and the fixed blade cooperate to cut the linear material reaching a predetermined length; A running cut method, wherein the cam shaft is stopped at a fixed position while returning to the movement start point; and the wire rod and the cutting blade unit are cut while running in a relatively stationary state.