JPH09192774A - Billet heater measuring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a heater from being damaged or a die from being broken in forging by controlling a transferring device and a discharging device with receiving signals of a diameter measuring means, a length measuring means and a detecting means. SOLUTION: In a first work W1, the diameter is measured with a diameter measuring displacement sensor 31 and the signal is sent to a controlling part of a controlling means. A work holder 26 is lowered, the 2nd work W2 is held, a 1st stopper is raised and the restriction of the work W1 is released. The length of the work W1 is measured with a length measuring displacement sensor 32, the signal is sent to the controlling part, at the same time, a quality of material detecting sensor 33 is lowered, it is pressed to the work W1, the quality of material of the work is detected and the signal is sent to the controlling part. The signal of each sensor is sent to the controlling part, the signal value is compared with a standard value stored in a storing part, when it is judged within the range of the standard value, the work W1 is released and sent to a conveyer. When it is judged without the range of the standard value, the work is dropped down to a receiving box 51.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a process for continuously performing induction heating and hot working, for example, in a process for manufacturing an engine valve, in which a billet of a valve material is continuously heated and forged by a billet heater by induction heating. In order to prevent damage to the heating device and molds when billets with non-standard materials and dimensions are mixed during processing, induction heating or resistance that eliminates non-standard billets outside the line in advance is provided with measuring means. The present invention relates to a billet heater measuring device by heating.

[0002]

2. Description of the Related Art Conventionally, a billet for heating a material by induction or resistance heating when continuously heating and hot working the material, for example, when mass-forming an engine valve or the like from a valve material by hot forging. A device in which a heater and a forging machine are connected is used.

[0003]

However, in such an apparatus for performing heating and forging in a continuous process, if a valve material larger than the standard size enters, the die is damaged during forging, and the material is too small. A valve with improper dimensions is created and waste occurs. Further, if the material having burrs or sags on the cut surface enters the process when the material is cut, there is a risk of damaging the heating tube of the billet heater or the forging die. Further, engine martensite-based materials and non-magnetic austenitic-based materials are used for engine valves, but magnetic materials tend to increase in temperature due to induction heating than non-magnetic materials. If a magnetic martensite valve material is mixed as a different material during the heating / forging process of an austenitic valve, the temperature rises too much and the valve material melts, and the heating tube of the induction heating coil is damaged. Conversely, if a non-magnetic austenitic valve material is mixed as a different material during the heating / forging process of a magnetic martensitic valve, the temperature of the material will not rise and the forging die will be damaged. Occurs.

Therefore, an object of the present invention is to provide a billet heater measuring device by induction heating or resistance heating which prevents such an accident.

[0005]

In order to achieve the above object, a billet heater measuring device by induction heating or resistance heating according to the present invention comprises a carrying device for carrying a workpiece.
A diameter measuring means for measuring a width or a diameter of a material to be processed provided on a traveling path of the conveying device, a length measuring means for measuring a length, a material detecting means for detecting a material, and the material to be processed are It is provided with a discharging device for classifying and discharging, and a control means for controlling the conveying device and the discharging device by receiving signals from the measuring means and the detecting means.

That is, by providing a diameter and length measuring means for measuring the dimension of the material to be processed on the traveling path of the conveying device through which the material to be processed advances, the material having the dimension failure is measured in advance,
By providing a material detecting means for detecting the material, the mixture of different materials can be detected. And the control means
The defective device is discharged to the outside of the traveling path by driving the discharging device that classifies and discharges the defective product in response to the signal from the detection means, so damage to the billet heater due to mixing of defective material and damage to the die during forging are prevented. .

Further, the billet heater measuring device by induction heating or resistance heating of the present invention has a V-shaped cross section arranged at an angle such that the material to be processed slides on a movement line inside the cross section by its own weight. A conveying device provided with a supply gutter, a reduction detection sensor and a full detection sensor for detecting the shortage and fullness of the material supplied to the supply gutter, and the diameter of the material provided along the movement line of the material and A diameter and length measuring means for measuring the length and a material detecting means for detecting the material of the material, and a discharging device for discharging the material out of the standard value provided at the lower end of the supply gutter to the outside of the moving line, A comparison unit that stores the diameter and length of the material and the standard value of the material and compares the stored value with the signal value introduced from the diameter and length measuring means and the material detecting means, each sensor and each measurement Receiving the signal of the detection means Those having a control unit and a control unit for driving the conveying device and the discharge device. With this configuration, a billet heater measuring device having the above effects can be easily achieved.

Further, it is desirable that the diameter measuring means and the length measuring means are constituted by a laser displacement sensor and the material detecting means is constituted by an overcurrent type sensor in order to exclude a nonstandard product from the line with high accuracy. . Further, it is desirable that the overcurrent sensor is provided with a mechanism that is pressed against the object to be detected via a buffer device at the time of detection in order to prevent damage to the sensor and perform highly accurate detection.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to an embodiment shown in the drawings. FIG. 1 is a side view of a billet heater measuring device according to an embodiment of the present invention, FIG. 2 is an enlarged detailed view of a measuring unit and a discharging device thereof, and FIG. 3 is a detailed view of a buffer device holding a material detection sensor. FIG. 4 is a block diagram showing the configuration of the control means, and FIG. 5 is a flow chart showing the operation of the measuring apparatus of the present invention.

In FIGS. 1 and 2, a feeding gutter 12 having a V-shaped cross section is provided in a conveying device 11 so that a valve material (hereinafter referred to as a work) W, which is a material to be processed, slides and falls in its cross section under its own weight. It is provided at various angles. In this embodiment, this angle is about 45 degrees with respect to the horizontal. The work W is supplied from the upper end 12a of the supply gutter 12 to the supply gutter 12 by the feeder 1, and a work decrease detection sensor 22 for detecting a shortage of the work is provided near the center of the supply gutter 12. A work fullness detection sensor 23 for detecting the fullness of the work is provided near the upper end. The work reduction sensor 22 and the work full detection sensor 23 are composed of proximity switches.

A cylinder 2 is provided at a lower end portion 12b of the supply gutter 12.
5, a first stopper 24 that moves up and down is provided. When the first stopper 24 is lowered as shown in FIG. 2, the work W1 that has dropped in the supply gutter 12 by its own weight is located at the lower end 12b of the supply gutter 12. It is supposed to stop. A work clamp 26 that is vertically moved by a cylinder 27 is provided at a position of the second work W2 on the upper side of the stopped first work W1 at the lower end 12b, and the work W2 is moved by pressing the work W2 against the supply gutter 12. Can be restrained. As a result, as shown in FIG. 1, when the first stopper 24 is raised after the movement of the work W2 is restrained by the work presser 26, only the first work W1 is moved by its own weight to the movable gutter provided on the lower side of the supply gutter 12. It is designed to be moved into 13.

The movable trough 13 has a V-shaped cross section similar to the supply trough 12, and is configured to reciprocate up and down by the cylinder 14. When the movable trough 13 is in the upper position, it is the same as the supply trough 12. It is supposed to become a movement line.
A second stopper 28 that is vertically moved by a cylinder 29 is provided on the lower end side of the movable trough 13, and the second stopper 2 is provided.
When 8 is lowered to the lower position, the work W1 that has slid from the supply gutter 12 to the movable gutter 13 by its own weight is stopped and stopped at the position W1 'in the movable gutter 13.
When the second stopper 28 is raised in this state, the work W1 '
Is slid by a weight gutter 61 provided on the lower end side of the movable gutter 13 by its own weight and sent to a conveyor 62, and is continuously heated by an induction heating device (not shown) and then forged into a valve.

When the movable gutter 13 is lowered to the lower position by the cylinder 14 while the work W1 'is stopped by the second stopper 28 and is inside the movable gutter 13, the line of the movable gutter 13 is displaced downward from the moving line. , Work W1 'is the second
It also comes off the stopper 28 and falls into the chute 50 by its own weight. Inbox 51 at the bottom of chute 50
Is provided to receive the falling work W1 '.

A diameter measuring displacement sensor 31 for measuring the diameter of the work W is provided on the side surface near the lower end surface 12a of the supply trough 12, and a length measuring displacement sensor 32 for measuring the length of the work W on the side surface of the movable trough 13. Is provided. The diameter measurement displacement sensor 31 and the length measurement displacement sensor 32 are VG manufactured by KEYENCE CORPORATION.
A -035 type displacement sensor is used, and the diameter or length of the work is measured by the laser beam, and the signal is sent to the control means 40. A material detection sensor 33, which is a material detection means for detecting the material of the work W, is provided on the upper surface side of the movable gutter 13. As the material detection sensor 33, an EX-422 type overcurrent type sensor manufactured by Keyence Corporation is used, and a difference in eddy current due to material is detected and the signal is sent to the control means 40. Also, the material detection sensor 3
3 is a cylinder 3 via a shock absorber 34 as shown in FIG.
5 is attached to the tip of the rod 36. In this shock absorber 34, a plate 36a having two pins 37 planted at both ends is fixed to the tip of a rod 36 of a cylinder 35.
The sensor 33 is fixed to a plate 39 which is slidably fitted to the coil spring 3 in a direction in which the plate 36a and the plate 39 are separated from each other.
It was urged by 8. As a result, when the material detection sensor 33 is pressed against the work W to detect the material, the sensor 33 softly hits the work W by the biasing force of the coil spring 38. It is possible to prevent damage to the sensor and improve detection accuracy. In the present embodiment, the shock absorber is composed of a coil spring, but in other structures,
For example, a leaf spring, rubber, air spring or the like may be used.

FIG. 3 is a block diagram showing the structure of the control means 40. The control unit 40 includes a control unit 41, a storage unit 42, and a drive unit 43. The control unit 41 receives signals introduced from the work reduction sensor 22 and the work full sensor 23, and controls the operation and stop of the feeder 1 via the drive unit 43. In addition, according to each movement of the device described in detail below, the drive cylinder 27 of the work retainer 26 via the drive unit 43,
Cylinder 25 of first stopper 24, cylinder 29 of second stopper 28, drive cylinder 35 of material detection sensor 33
Drive. The storage unit 42 stores the dimensions of the material in advance,
The standard value of the material is stored, and the measured value is compared with the stored value and the signal values from the diameter measurement displacement sensor 31, the length measurement displacement sensor 32, and the material detection sensor 33 which are introduced through the control unit 41. Is sent to the control unit 41 when all are in the standard, and when any one of the items is out of the standard, the non-standard signal is sent to the control unit 41. The control unit 41 raises and drives the second stopper 28 via the drive unit 43 when receiving the in-standard signal, and drives the cylinder 14 of the movable gutter 13 through the drive unit 43 when receiving the non-standard signal. Drive down. As a result, the non-standard work W1 is sent to the conveyor 62 via the bending trough 61, and the non-standard work W1 falls into the chute 50 and enters the receiving box 51.

The operation of the measuring apparatus having the above structure will be described below with reference to the flowchart of FIG. At the start point, the first stopper 24 and the second stopper 28 are in the lowered lower position for stopping the movement of the work W. First, the work W is fed from the feeder 1 by the signal of the drive unit 43 of the control means 40.
Is supplied to the supply gutter 12 (ST1). At this time, the first
Since the stopper 24 is lowered, the work W is supplied to the supply gutter 12
Even if the decrease detection sensor 22 reaches the position (S
T2) The supply of the work W is continued. When the work W comes to the position of the full detection sensor 23 and a full signal is sent to the control means 40 (ST3), the feeder 1 is stopped and the supply of the work W is stopped (ST4). At this time, the first work W1 is stopped by the first stopper 24 and is at the position of the tip 12b of the supply gutter 12 (ST5).

In this state, the diameter of the first work W1 is measured by the diameter measuring displacement sensor 31, and the signal is sent to the control section 41 of the control means 40 (ST6). When the measurement of the diameter of the work W1 is completed, the work clamp 26 driven by the cylinder 27 is lowered to restrain the movement of the second work W2 (ST7), and then the first stopper 24 driven by the cylinder 24 is raised. The constraint of the first work W1 is released (ST8). Then, the work W1 slides under its own weight, moves to the movable gutter 13, is stopped by the second stopper 28 at the lowered position, and stops at the position W1 '(ST9).
Here, the length measuring displacement sensor 32 measures the length of the work W1, and the signal is sent to the control unit 41 (ST1.
0). At the same time, the material detection sensor 33 driven by the cylinder 35 is lowered and pressed against the work W1, the material of the work is detected, and the signal is sent to the control unit 41 (ST11). At this time, since the material detection sensor 33 is attached to the rod 36 via the shock absorber 36, excessive force is not applied when the material detection sensor 33 is pressed, and damage to the sensor can be prevented. Further, since the sensor 33 is detected while being pressed against the work W, the accuracy is improved and the detection error can be reduced. When the detection is completed, the material detection sensor 33 moves to the cylinder 3
It is driven by 5 and goes up from the work.

The signals from the diameter measuring displacement sensor 31, the length measuring displacement sensor 32, and the material detecting sensor 33 are controlled by the control unit 41.
And the signal values are compared with the standard values stored in the storage unit 42 (ST12). When it is determined that these signal values are within the range of the standard value stored in the storage unit 42, the second stopper 28 is raised to the upper position via the drive unit 43 (ST13), and the work W1 is opened. And is sent to the conveyor 62 via the bending trough 61 (ST14). When the work W1 is sent to the conveyor 62, the second stopper 28
Again moves to the lower position (ST15). The work W1 sent to the conveyor 62 is sent to an induction heating device (not shown), heated, and forged into a valve (ST16). .

The storage unit 42 has the diameter measuring displacement sensor 31,
Measurement of length measurement displacement sensor 32 and material detection sensor 33
If any one of the detected values is judged to be outside the range of the standard value, a non-standard signal is sent to the control unit 41 and the driving unit 4
The movable trough 13 is driven downward by the cylinder 14 via 3 and moves down to the lower position (ST17). As a result, the work W1 is released from the second stopper 28, drops on the chute 50, and drops on the receiving box 51 (ST18). Work W
When 1 falls on the chute 50, the movable gutter 13 is driven and returns to the original upper position (ST19). This prevents a defective valve material whose dimensions and material are out of specification from flowing to the induction heating device, and eliminates damage to the heating tube and the forging die.

On the other hand, when the work W1 moves from the supply gutter 12 to the movable gutter 13, the first stopper 24 lowers again (ST20), and the work retainer 26 rises (ST21).
As a result, the second work W2 is released and the work W
2 descends by its own weight and comes to the position of W1 ahead (ST5). Then, similarly to W1, measurement and detection are continuously performed. When the above-mentioned measurement / detection progresses, the work W in the supply gutter 12 decreases, and when the final work W reaches the position of the decrease detection sensor 22, the feeder 1 newly starts the supply of the work (S
T2), when the work comes to the position of the full detection sensor 23 (S
T3) Supply is stopped (ST4). This allows
It is possible to mass-produce by continuously measuring and detecting.

As described above, according to the measuring apparatus of the embodiment of the present invention, by providing the measuring means for measuring the diameter and length of the material to be processed on the traveling path of the conveying device in which the material to be processed advances. The measurement of a dimensionally defective material in advance and the inclusion of a different material is detected by providing a material detection means for detecting the material. The control means receives the signal from the measuring and detecting means and drives the discharging device to discharge the defective product to the traveling path.
It is possible to prevent damage to the billet heater due to mixing of defective materials and damage to the die during forging.

Further, in the transfer device, since the supply gutter having a V-shaped cross section is arranged at an angle such that the material slides by its own weight, the material can be transferred without special transfer power. Further, since the supply gutter is provided with a reduction and full detection sensor for detecting a shortage and fullness of the material to automatically supply the material, continuous operation is easy. Furthermore, the signal values of the material diameter and length measuring means and the material detecting means are sent to the control means, and this signal value is compared with the standard value stored in advance in the storage section of the control means to determine whether the material is within the standard of the material or Since the nonstandard material is judged and the nonstandard material is discharged to the outside of the moving line by the discharging device, the defective material does not enter the continuous process of induction heating and forging.

Since the diameter and length measuring means is composed of a laser displacement sensor and the material detecting means is composed of an overcurrent type sensor, highly accurate measurement and detection can be performed.
Further, since the object to be detected is pressed through the overcurrent type sensor shock absorber, damage to the sensor can be prevented and highly accurate detection can be performed.

[0024]

As described above, according to the billet heater measuring device of the present invention, the billet heater and the forging machine are connected, for example, when the material is heated and hot-worked continuously. In a device that heats and forges engine valves from valve materials in a continuous process, the processed materials that enter these processes are automatically and continuously measured and measured to detect defective products and reject defective products. It is possible to prevent damage to the billet heater due to mixing and damage to the die during forging.

[Brief description of the drawings]

FIG. 1 is a side view of a billet heater measuring device according to an embodiment of the present invention.

FIG. 2 is an enlarged detailed view of a measuring part and a discharging part of the billet heater measuring device according to the embodiment of the present invention.

FIG. 3 is a diagram showing an example of a shock absorbing device of a material detection sensor of a billet heater measuring device according to an embodiment of the present invention.

FIG. 4 is a block diagram showing a configuration of control means of the billet heater measuring device according to the embodiment of the present invention.

FIG. 5 is a flowchart showing the operation of the billet heater measuring device according to the embodiment of the present invention.

[Explanation of symbols]

 1 Feeder 11 Conveyor 12 Supply Gutter 13 Movable Gutter 14 Cylinder 22 Decrease Detection Sensor 23 Full Detection Sensor 24 1st Stopper 25 Cylinder 26 Work Presser 27 Cylinder 28 2nd Stopper 29 Cylinder 31 Diameter Measurement Sensor 32 Length Measurement Sensor 33 Material Detection Sensor 34 Shock absorber 35 Cylinder 36 Rod 37 Pin 38 Coil spring 39 Plate 40 Control means 41 Control unit 42 Storage unit 43 Drive unit 50 Chute 51 Inbox 61 Curve gutter 62 Conveyor W Work (workpiece)

Claims (3)

[Claims] 1. A conveying device for conveying a material to be processed, a diameter measuring means for measuring a width or a diameter of the material to be processed provided on a traveling path of the conveying device, and a length measuring means for measuring a length. A guide provided with a material detecting means for detecting a material, an ejecting device for classifying and ejecting the material to be processed, and a control means for receiving signals from the measuring means and the detecting means to control the conveying device and the ejecting device Measuring device for billet heater by heating or resistance heating. 2. A V arranged at an angle such that the material to be processed slides on a movement line inside the cross section by its own weight.
A conveying device provided with a supply gutter having a V-shaped cross section, a reduction detection sensor and a full detection sensor for detecting a shortage and fullness of a material supplied to the supply gutter, and a material provided along a movement line of the material. Diameter and length measuring means for measuring the diameter and length of the material, material detecting means for detecting the material of the raw material, and discharge of the material out of the standard value provided at the lower end of the supply gutter to the outside of the moving line A device, a comparison unit for storing the diameter and length of the material and the standard value of the material and comparing the stored value with the signal value introduced from the diameter and length measuring means and the material detecting means, each of the sensors, A billet heater measuring device by induction heating or resistance heating, comprising control means having a control part for receiving the signals from the respective measuring / detecting means and driving the conveying device and the discharging device. 3. The diameter measuring means and the length measuring means are constituted by a laser displacement sensor, the material detecting means is constituted by an overcurrent type sensor, and the overcurrent type sensor is detected through a shock absorber at the time of detection. The billet heater measuring device by induction heating or resistance heating according to claim 1 or 2, comprising a mechanism that is pressed against the body.