JPS6123538A - Production device of regular-sized straight member - Google Patents

Abstract

PURPOSE:To elevate the quality of a regular-sized straight member by providing the detecting device of a cut time detecting the prescribed movement distance of a straight member and by cutting the straight member with providing the block reciprocating means synchronizing to the feeding speed of the straight member. CONSTITUTION:A cut time detecting device 11 outputs a cut signal to a regular- sized cutter 33 when the straight member T being fed out in advance by a cutter 7 comes to a fixed length A. When a solenoid valve 37 of an air cylinder device 13 is motioned by the command sent from the detecting device 11, a cutter fitting block 6 is fed and moved simultaneously with the feeding speed of the straight member T. When the detecting signalf of the cut time detecting device 11 is inputted into a controlling unit 34, a cut signal P is outputted and the cutting fitting block 6 is moved simultaneously with the straight member T and by a roller 12 being brought into contact with the inclined face 14a of a hammer 14 a cutter 9 cuts correctly the straight member T. With this method the regular-sized material of an excellent quality without having any deformation, etc. is obtd.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a fixed-length straight material manufacturing apparatus that straightens a winding wire using a straightener and then cuts the wire to a fixed length using a fixed-length cutter.

<Prior Art> A conventional straight length manufacturing apparatus is shown in FIG. This device unwinds the wire S wound around the winding device 15 and feeds it by the first pitching roll machine 2 and the second pitching roll machine 3, and these pitching rolls @2
, 3, the curved wire S is formed into a straight line by a straightening machine 1 installed between 3 and 3 to form a straight line T, and then cut to a fixed length by a standard length cutting machine 4 installed at the tip of the second pitching roll Ia3. It is for cutting.

This fixed length cutting 41!4 has an eccentric cam 17 rotated by a motor 16 at the top of the frame 5, and a connecting rod 18 that is fitted into the eccentric cam 17 and swings is formed at the top of the frame 5. The hammer mounting member 20 is pivotally connected to a hammer mounting member 20 that is vertically guided by a guide 19.
It is attached to the lower surface of the roller so as to be movable parallel to the moving direction of the continuous straight material T sent from the second pitching roll machine 3, and is biased backward in the moving direction of the continuous straight material T by a spring 21. There is a hammer 22, frame 5
A block 6 is provided for mounting a cutter that slides in the moving direction of the straight member T, and the cutter mounting block 6 is mounted so as to be guided by the block 6 so as to be able to move up and down, and is lifted by a spring 10. A fixed cutter 7 is provided with a movable cutter 9 on its side and is provided with a movable member 8 that is lowered by being struck by the hammer 22, and has a hole 7a through which the straight member T passes and has a male thread 7b cut on its outer periphery. is provided so as to be in sliding contact with the movable cutter 9, and furthermore, the cutter is attached to a block.The cutting tip of the straight member T is attached to a horizontal bar 23 extending from the lever 6 in the moving direction of the straight member T. An adjustable linear dimension setting stopper 24 that comes into contact with the surface is attached to the horizontal bar 23, and the cutter comes into contact with a bracket 26 provided to guide the horizontal bar 23 from the overall frame 25. For installation, a stomper 27 is provided to restrict the movement stroke of the 1-oriented wire T of the block 6, and the horizontal bar 23 is further provided with a
The cutter is attached in such a way that the spring 28 that returns the block 6 to its original position biases the horizontal bar 23 in the direction that it returns.

Therefore, if the length A of the fixed length straight material T to be obtained by cutting the continuous straight material T formed by the straightening machine 1 is set, then the distance between the fixed cutter 7 and the fixed cutter 7 can be set by adjusting the linear dimension setting stopper 24. Take A and operate the entire device. Then, straight line 4I
! The continuous straight member T formed in step 1 is cut by a fixed cutter 7.
It passes through the hole 7a and extends toward the linear dimension setting stopper 24, and the cut end surface pushes this stopper, and from then on, the straight material T and the cutter removal block 6 move integrally. Then, the movable member 8 uses the motor 16 as a driving source to move the hammer 22 up and down at high speed.
As a result, the hammer 22 also moves horizontally together with the movable member 8, and then the stopper/par 27 collides with it.
When the horizontal movement of the block 6 is stopped, the movable member 8 is completely lowered, and the straight material T is cut to a fixed length by the movable cutter 9 and the fixed cutter 7 without causing any deformation on the cutting surface. After the cutting is completed, the cutter mounting block 6 returns to its original position due to the bias of the spring 28, and the movable member 8 also moves toward the spring 1 as the hammer 22 rises.
0 returns to the original position. Thereafter, the straight member T will again extend from the hole 7a of the fixed cutter 7 toward the linear dimension setting stopper 24, and the above cutting will be repeated.

However, the straight length U obtained by the above-mentioned straight length straight material manufacturing apparatus has extremely high straightness immediately after leaving the straightening machine 1; The straight members υ that were cut to length had low straightness, were scratched, or were deformed.

For this reason, when the inventor investigated the cause, it was found that the stopper 27 hits the bracket 26 and the horizontal movement of the block 6 is stopped.
The cause is that the feeding force due to the rotation of the pitching roll machines 2 and 3 that were feeding the material acts as a thrust (buckling load) on the portion of the straight material T that is fed out from this roll machine. I understand. That is, when the horizontal movement of the block 6 is 11 times, a buckling load is generated on the straight member T, and the straight member T is moved between the straight machine 1, the roll machines 2 and 3, the fixed cutter 7, and the stopper 24, respectively. , a curved deformation occurs in an arc shape, a diameter enlargement occurs in the middle piece of several pieces of the straight line al, a sliding scratch occurs on the second pitching roll machine 3, and the straight line of the straight line machine l This was a cause of deviations in molding accuracy.

In addition, in order to eliminate the above-mentioned drawbacks, there is an idea to remove the stopper 27 so that the horizontal movement of the block 6 does not stop, so that the thrust force does not act on the portion of the straight material T that is sent out from this roll machine. However, if you do this, the horizontal movement of the block 6 will increase, so the hammer 22 of the blower will have to hit more when installing the cutter.
Moves up and down at high speed without returning to the original position at 8/\
Nmar 22 descended twice and thrice/\Nmar 22
As a result, multiple strikes occur, resulting in many extremely short and long parts being cut. That is, since the fixed-length cutting Ia4 having the above configuration requires the stopper 27 to prevent the band members from being cut, simply removing the stopper/par 27 is necessary. The idea of resolving the above drawbacks cannot be adopted.

On the other hand, the above-mentioned conventional fixed-length straight material manufacturing apparatus had the inconvenience of visually inspecting each straight material T after cutting it to a fixed length. By preparing for this, the deflection of the straight material T was completely suppressed.The straight material 1 was continuously detected by a flaw detector, and the straight material T that was scratched and cut to a specified length was tried to be removed when it fell. As mentioned above, when the straight material T stops moving during cutting to a fixed length,
It has been found that the ring-shaped flaw detection coil of the flaw detector emits an incorrect flaw detection signal because slippage occurs between the straight material T and the straight material T in the second pinch roll machine 3, causing the straight material T to curve into an arc shape. From this point of view, it became necessary to eliminate the above-mentioned drawbacks.

<Object of the invention> The present invention has been devised in view of the above-mentioned points.
By preventing the buckling load from acting on the part of the straight material fed out from the second pinch roll machine during disconnection, the straightness of the straight material, which can be obtained with extremely high precision in the straight machine, is reduced. The present invention provides a fixed length straight material manufacturing apparatus equipped with a fixed length cutting machine that can cut the fixed length straight material without cutting the fixed length.

<Structure of the Invention> The fixed length straight material manufacturing apparatus of the present invention includes a straight line 411 (1) and continuous wire rods (S) placed before and after this straight line machine (1) that are fed to the straight line 411 (1) and passed through this straight line machine (1). The first pitching roll machine (2) and the second pitching roll machine (3) that give It is equipped with a fixed length cutting machine (4) that cuts the length.
In the fixed length cutting 41 (4), a cutter that is guided reciprocally in the feeding direction of the straight material (T) is attached to the cutting machine main frame (5), and this cutter is attached to the block (6). A fixed cutter (7) is attached and has a hole (7a) through which the straight member (T) passes, and the edge of this hole (7a) is a cutting tooth, and the cutter is attached to the block (6). A movable member (8) that is guided in a vertically movable manner, and a movable cutter (8) that is provided at the lower end of the movable member (8) and that cuts the straight material (T) in cooperation with the fixed cutter (7). 9) and - the movable cutter (
9) and a spring (10) which lifts the movable member (8) such that the movable member (8) is positioned above the fixed cutter (7).
) is newly installed with a cutting timing detection device (11) that detects when the travel distance after each standard length cutting reaches a certain value (A) and outputs a cutting signal, and the standard length cutting machine (4) , a roller (12) provided at the upper end of the movable member (8);
Taken from the cutting machine body frame (5) above, I-
The cutter is mounted by a block reciprocating means (13) that moves the block (6) in synchronization with the feeding speed of the straight material (T) and returns it to its original position in response to a cutting signal from the cutting timing detection device (11); The cutter is attached to the machine body frame (5) and the block reciprocating means (I3) is attached to the roller (1) when the block (6) is fed.
2) A fixed hammer (14) having a sloped surface (14a) having a force function to lower the movable member (8) through rolling contact.

<Example> Hereinafter, a fixed length straight material manufacturing apparatus according to an example of the present invention will be described as a first example.
This will be explained with reference to FIG. 1, FIG. 2, and FIG. 3. Note that members that are the same as those in the prior art are designated by the same reference numerals.

First, to explain the configuration, this device has a first pitching roll mechanism, a second pitching roll mechanism, and a third pitching roll mechanism 9 that unwind and feed the wire S wound around the winding device 15. There is a straight line machine 1 which has a large number of rotating pieces (not shown) that form a curved wire S into a straight line between pitching rolls 2 and 3 to form a straight line T, and has a pitching roll mechanism, A flaw detector 30 that continuously performs flaw detection on the straight material T between 28 and 30, and a steady rest device 31 and 32 that completely suppresses the movement of the straight material T that passes through the flaw detection 41 and 30 before and after the flaw detection @30, There is a cutting timing detection device 11 that detects when the moving distance of the straight material T after each cut to a fixed length reaches a certain value A and outputs a cutting signal. This configuration includes the above-mentioned fixed-length cutting machine 33 that cuts the T to a fixed length.

The flaw detector 30 has a ring-shaped magnetic detection coil (not shown) that is l+i thicker than the diameter of the straight member T.
1. When the straight member T is inserted and moved into the center of the coil with high precision using the steady rest device 31 and 32 without eccentricity, when the straight member T is scratched, a magnetic change occurs in the coil. This makes it possible to detect flaws. Each of the above-mentioned steady rest devices 31 and 32 is made up of three steady rests that can be simultaneously moved in equal strokes toward the straight member T by a gear mechanism (not shown), and that have a phase difference of 120' in a plane in the diametrical direction of the straight member T. Free roller 31
a, 32a are provided as a pair on both sides of the frames 31b, 32b, and three steady rest free rollers 31a on each side
, 32a hold down the straight member T. The cutting timing detection device 11 outputs a cutting signal to the fixed length cutting machine 33 when the dimension of the straight material T sent out before the fixed cutter 7 reaches a certain value A, and is used for measuring the lower side. The upper lightweight free roll Ilb for presser is placed on the free roll Ila so that it can be lifted freely, and it is rotated by passing a straight member T moved by a pinch roll machine 3°29 between both free rolls Ila and Ilb. The rotational speed of the free roll Ila for measurement is determined by the rotary encoder Ilc.
This detection signal is detected by the disconnection signal output circuit lid.
The controller unit 34 outputs a cutting signal P when the moving distance of the straight material T after each cut to a fixed length is calculated and reaches a constant value A.

The fixed length cutting machine 33 has a cutter mounting block 6 that is guided reciprocally in the feeding direction of the straight material T on the cutting machine main body frame 5.
A slot 7) 6a is cut vertically from the lower surface, and a hole 7a through which the straight member T is passed is provided in a female screw cut on one side near the third pitching roll @29. The side edge is a cutting tooth, and a male thread is cut on the outer periphery 4! A fixed cutter 7 is screwed together and locked with a lock nut. Then, facing the cutting teeth of the fixed cutter 7, there is a movable member 8 which is guided by the block 6 so as to be movable up and down. Hole 7a of cutter 7
A movable cutter 9 is provided which cuts the straight member T extending from the movable cutter 9 in cooperation with a fixed cutter. This movable member 8 has a sleeve 2 8a inserted from the lower end, and above the sleeve 8a, 4fr$j-czFn*'j
Audience town/ru. The movable member 8 is held by a spring 1o when not cutting, and the movable cutter 9 is positioned on one side of the fixed cutter 7. A cylinder device is installed. This air cylinder device 1
When the block 6 is moved in the feeding direction of the straight material T, the roller 12 provided at the upper end of the movable member 8 moves the fixed hammer 14, which is adjustably mounted on the upper part of the cutting machine main body frame 5. It comes into contact with the inclined surface 14a at the lower end and rolls, and as a result, the 'uJ moving member 8
is set to decline. And a fixed length cutting machine 33
The cutter is installed below the block 6 as damage removal device R3.
5 is attached. This flaw removing device 35 is inclined from the side perpendicular to the straight material T and crosses the falling path when a flaw is detected in the straight material T by the flaw detector 30 and that part is cut. Exclusion rod 3 that extends like this
5a, and is designed to selectively remove the fixed length straight member U having a flaw to the side.

The air cylinder device 13 includes a piston rod head 1
3a is connected to the block 6 through the link 36, and the solenoid valve 37 is energized by the cutting signal P output from the controller unit 34 based on the command from the cutting timing detection device 11. By switching the state, compressed air from a compressor or an air cylinder (not shown) is supplied to the extension side cylinder chamber through the pipe 38, and the speed controller 39 attached to the pipe 38 allows the block 6 to be mounted on the straight member T. The feed movement is synchronized with the feed speed, and when the solenoid valve 37 is demagnetized, the valve state is switched and returned by a return spring attached to the valve, and the extension side cylinder chamber is opened to the atmosphere. At the same time, compressed air is supplied to the cylinder chamber on the retiring side, and the cutter is installed to return the block 6 to its original position.
l The inclined surface 14a at the lower end of the fixed hammer 14 is a gentle inclined surface 14a of about 15° that descends as it goes in the feeding direction of the straight member T. In cooperation with the rolling contact, a wedge action that strongly pushes down the movable member 8 is produced. fF No. 40 is a receiving device for straight length U without scratches.

Next, we will discuss the effect.

When the entire device is driven, the wire S wound around the winding device 15 is moved in a straight line J by the first pitching roll machine 2.
al, and in the straightening machine 1, it is held between a number of rotating pieces (not shown) and formed into a straight line. This straight material T is then transferred to the flaw detector 3 by the second pitching roll machine 3.
Sent to 0. At this time, since the steady rest devices 31 and 32 can completely suppress the movement of the straight member T, the flaw detector 30 can accurately perform continuous flaw detection of the straight member T, and if there is a flaw, it can be detected. When the part is sent to the length cutting machine 33 by the third pitching roll machine 28, extends through the hole 7a of the fixed cutter 7, and is cut, the length cutting 9 is performed.
When the cutter is attached, the removal rod 35a of the flaw removal device 35 attached to the cutter 33 extends into the fall path of the straight material T cut to a specified length below the block 6, so that it is not received by the receiving device 40 and is removed to the side. That will happen. The distance that the straight member T extends through the hole 7a of the fixed cutter 7 is determined by the rotary encoder +1c of the overhang pressure cutting timing detection device 11 of the straight member T without any interruption, and when a constant value A is reached, cutting is performed. From signal output circuit lid to control unit 3
4 receives a cutting command signal, and in response to the cutting signal P output from the control unit 34, the solenoid valve 37 is energized, the air cylinder device 13 is driven to retire, and the cutter mounting block 6 is synchronously moved in the feeding direction of the straight material T. I will let you do it. Therefore, when the cutter is attached and the block 6 is moved in synchronization, the projecting distance of the straight member T remains unchanged at the above-mentioned constant value A, and the fixed length straight member that has reached the constant value A is designated by the symbol U. During the synchronized movement of the block 6, the roller 12 at the upper end of the movable member 8 comes into contact with the inclined surface +4a of the fixed hammer 14 and rolls, so that the movable member 8 is strongly pressed down by the fixed cutter 7 and the movable cutter 9 In cooperation with the fixed cutter 7, the straight material T is cut without causing any deformation on the cutting surface, and the cut straight material U always has the above-mentioned accurate constant value A. When the cutting is performed, the rotary encoder llc is set to 0.
, the overhanging distance of the straight member T starts to be detected again, and the air cylinder device 13 changes to an extension drive, and the cutter mounting block 6 returns to its original position, and the upper end of the movable member 8 As the roller 12 moves away from the inclined surface 14a of the fixed hammer 14, the movable member 8
returns to rise. Thereafter, by repeating the same operation, a high quality straight length U can be obtained.

Modification> In the above embodiment, as the block reciprocating means (13),
An air cylinder device is used, and in the above embodiment, the cutter is attached so that the block 6 moves synchronously with respect to the straight member T when the air cylinder device is driven to retire. The cutter may be mounted as in the case of driving, or a hydraulic cylinder device may be used instead of an air cylinder device, or the cutter may be mounted on a screw shaft rotated by a motor by screwing a nut fixed to the block 6. It is also possible to have a configuration that matches.

As the disconnection timing detection device (11), a non-contact sensor consisting of a light emitting element and a light receiving element, or a contact sensor such as a limit switch is arranged in an adjustable manner on the lower side of the air cylinder device of the above embodiment. It may be configured such that when the sensor catches the tip of the straight member T, the air cylinder device is driven to retire.

Effects of the Present Invention> As explained above, the fixed length straight material manufacturing apparatus of the present invention has the following effects.

The overhanging distance of the straight material extending through the hole of the fixed cutter of the fixed length cutting machine is detected by the cutting timing detection device, and the block reciprocating means is activated to move the block in synchronization with the feeding speed of the straight material for cutter installation. This ensures that the overhanging distance of the straight member does not change at a constant value, and the roller at the upper end of the movable member contacts and rolls against the inclined surface of the fixed lX-meter provided above in the direction of movement, thereby strongly pushing down the movable member. This machine cuts straight materials to a fixed length without causing any deformation on the cutting surface through the cooperative action of a descending movable cutter and a fixed cutter, and does not stop the movement of the straight materials as in the past. Therefore, the feeding force of the pitching roll machine does not cause buckling load on the straight material, and therefore, the straight material does not bend or deform, and the straight material does not bend when forming the curved line of the straight material into a straight line. This eliminates the causes of diameter expansion molding, sliding scratches on the straight material in the pitching roll machine, or deviations in the straightness forming accuracy of the straight machine, and allows high-quality straight materials to be obtained. In addition, since the movement of the straight member is not controlled, the straight member does not undergo any bending deformation. By keeping the number of defects to a minimum, it becomes possible to install a flaw detector that continuously detects flaws in straight materials.

[Brief explanation of the drawing]

FIG. 1 is an overall front view of a fixed-length straight material manufacturing apparatus according to an embodiment of the present invention. FIG. 2 is an enlarged front view of main parts of the embodiment L. FIG. 3 is a cross-sectional view taken along the line ■-m in FIG. 2. FIG. 4 is an overall front view of a conventional fixed length straight material manufacturing apparatus. S: Continuous wire rod, T: Straight rod, U: Straight rod of the part where the overhang distance becomes a constant value (A) and is cut to a specified length, ■: Straight line machine, 2: - 1st hinch roll machine, 3...-S pinching roll machine, 4... Fixed length cutting machine, 5... Cutting machine body frame, 6... Reference cutter mounting block, 7φ119 fixed cutter, 7a. ...hole, 8 fists...movable member, 9 m e *if pivoting cutter, 10...spring, 11...p cut timing detection device, 12 fists...roller, 13...block reciprocating motion Means, 14... Fixed hammer, 14a... Inclined surface having wedge action, Patent Applicant: Fujii Straight Machine Co., Ltd. Representative Patent Attorney Dai
Hiroshi Numa / Tsukasa, Ha I Procedural Amendment

Claims (1)

[Claims] A straightening machine (1), and a first pitching roll machine (2) that is placed before and after this straightening machine (1) and feeds a continuous wire (S) to be passed through this straightening machine (1). and a second pitching roll machine (3), and a fixed-length cutting machine (4) that cuts the straight material T to a fixed length after being linearly formed by the straightening machine (1) and sent to the tip of the second pitching roll machine (3). The fixed length cutting machine (4) is equipped with a straight material (T) on the cutting machine main body frame (5).
A cutter mounting block (6) that is guided reciprocally in the feeding direction of
) and the edge of this hole (7a) is a cutting tooth; and the cutter mounting block (6).
), and a movable member (8) that is provided at the lower end of this movable member (8) and that cuts the straight material (T) in cooperation with the fixed cutter (7). The movable member (9) and the movable member (9) are positioned above the fixed cutter (7).
8) in a fixed-length straight material manufacturing device equipped with a spring (10) that is lifted up, the moving distance after each cut of the straight material (T) to a fixed length is a constant value (A).
A cutting timing detection device (11) that detects this and outputs a cutting signal when
is a roller (
12), and the cutter mounting block (6) is moved in synchronization with the feed speed of the straight material (T) by the cutting signal from the cutting timing detection device (11) attached to the cutting machine body frame (5) and returned to its original position. A block reciprocating means (13) is attached to the cutter body frame (5) and the roller (12) is brought into rolling contact when the cutter mounting block (6) is fed and moved by the block reciprocating means (13). A fixed hammer (14) having an inclined surface (14a) having a wedge action to lower the movable member (8) via the fixed hammer (14).