JP2019132282A - Ladle water heater and arm drive control system - Google Patents

Abstract

To provide a ladle water heater in which a width of a device in an arm drive shaft direction is reduced, made compact and further a backlash related to a rotation of the arm drive shaft is restricted low so as to eliminate a drawback that a width of the device in an arm drive shaft direction is increased and a ladle water heater and an arm drive control system require a wide installing space.SOLUTION: At a ladle water heater 1, a width of the device in a direction of an arm drive shaft 34 is reduced by making a first speed reducer 32 as an orthogonal shaft type to enable its compact formation to be attained. Further, an arm drive control system having a control device using as a second speed reducer 33 having a backlash of 7arcminute or less, detecting a rotating angle of an output shaft of the first speed reducer, controlling a rotational angle of a motor 31 on the basis of the rotational angle and operating an arm drive shaft is constructed to enable the backlash relating to a rotation of the arm drive shaft to be restricted low.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a ladle hot water supply apparatus having an arm for pouring molten metal. By combining the motor and the speed reducer, the backlash associated with the rotation of the arm drive shaft, which is the purpose of the final output, is kept low. The present invention relates to a ladle hot water supply apparatus equipped with an arm drive system that enables downsizing of the entire hot water supply apparatus.

  Further, according to the present invention, by combining the motor and the speed reducer, the backlash associated with the rotation of the arm drive shaft, which is the purpose of the final output, is reduced, and the entire ladle water heater can be made compact. The present invention relates to an arm drive control system provided with an arm operation control device that controls the rotation angle of the motor to operate the arm drive shaft in an arm drive control system of a ladle hot water supply device provided with a drive system.

  FIG. 3 shows a configuration for explaining a ladle water heater and an arm drive control system used in the prior art.

  In this configuration, the output shaft of the motor 41 and the input shaft of the speed reducer 42 are connected, the output shaft of the speed reducer 42 and the arm drive shaft 43 are connected, and the speed reducer 42 is a parallel shaft type. The shaft and the arm drive shaft 43 are connected on a straight line, and the backlash of the speed reducer 42 is 7 armature or less, and is equipped with an arm drive system that drives the arm 44 by rotating the motor 41 left and right. It is a water heater.

  Further, in the arm drive control system of the ladle water heater provided with the arm drive system described above, the output shaft of the speed reducer 42 is provided with the first gear 45, and the first gear 45 and the second gear 46 are engaged with each other. A shaft 47 coupled and fastened to the second gear 46 is provided at the center of the second gear 46, the rotation angle of the shaft 47 is detected by the encoder 48, and the rotation of the motor 41 is based on the detected rotation angle of the shaft 47. The arm drive control system includes an arm operation control device that controls the angle to operate the arm drive shaft 43.

Japanese Patent No. 5545734

  In the above-described background art, there is a problem that the width of the device in the direction of the arm drive shaft increases, and a large installation space is required as a ladle hot water supply device and an arm drive control system.

  Therefore, in the ladle hot water supply device and the arm drive control system, there is a problem that it is necessary to reduce the width of the device in the direction of the arm drive shaft to make it compact, and to keep backlash related to the rotation of the arm drive shaft low. .

  According to the first aspect of the present invention, in the ladle hot water supply apparatus having an arm for pouring molten metal, the output shaft of the motor and the input shaft of the first reduction gear are connected, and the output shaft of the first reduction gear and the second The input shaft of the speed reducer, the output shaft of the second speed reducer and the arm drive shaft are connected, the first speed reducer is an orthogonal axis type, and the second speed reducer is a parallel axis type, The output shaft of the second speed reducer and the arm drive shaft are connected on a straight line, the backlash of the first speed reducer is less than 40 armature, the backlash of the second speed reducer is less than 7 armature, the motor A ladle hot water supply apparatus comprising an arm drive system that drives an arm by rotating left and right.

  A second aspect of the present invention is the ladle hot water supply apparatus according to the first aspect, wherein the first speed reducer is a speed reducer provided with a bevel gear.

  A third aspect of the present invention is the ladle hot water supply apparatus according to the first aspect, wherein the first speed reducer is a speed reducer provided with a worm gear.

  A fourth aspect of the present invention is the ladle hot water supply apparatus according to any one of the first to third aspects of the present invention, wherein the second speed reducer is a speed reducer provided with a planetary gear mechanism.

  A fifth aspect of the present invention is the speed reducer according to any one of the first to third aspects of the present invention, wherein the second speed reducer includes a mechanism in which a spur gear and a differential gear are combined. It is a ladle water heater.

  A sixth aspect of the present invention is the ladle hot water supply apparatus according to any one of the first to third aspects of the present invention, wherein the second speed reducer is a ball speed reducer.

  A seventh aspect of the present invention is the ladle hot water supply apparatus according to any one of the first to third aspects of the present invention, wherein the second speed reducer is a wave gear device.

  According to an eighth aspect of the present invention, the output shaft of the motor and the input shaft of the first reducer are connected, the output shaft of the first reducer and the input shaft of the second reducer are connected, and the second reduction gear is connected. The output shaft of the machine and the arm drive shaft are connected, the first reducer is an orthogonal shaft type, the second reducer is a parallel shaft type, and the output shaft of the second reducer and the arm drive shaft are Connected on a straight line, the backlash of the first speed reducer is 40 arminute or less, the backlash of the second speed reducer is 7 arminute or less, and has an arm drive system that drives the arm by rotating the motor left and right In the arm drive control system of the ladle water heater, the rotation angle of the output shaft of the first speed reducer is detected, and the rotation angle of the motor is controlled based on the detected rotation angle of the output shaft of the first speed reducer. And Operating the drive shaft, a arm drive control system comprising the arm operation controller.

  According to the present invention, in a ladle hot water supply apparatus having an arm for pouring molten metal, the output shaft of the motor and the input shaft of the first reduction gear are connected, and the output shaft of the first reduction gear and the second reduction gear are connected. The input shaft of the machine is connected, the output shaft of the second reducer and the arm drive shaft are connected, and the output shaft of the second reducer and the arm drive shaft are connected on a straight line. A ladle water heater having an arm drive system for driving an arm, wherein the first speed reducer is an orthogonal axis type and the second speed reducer is a parallel axis type. There is an effect that the apparatus can be made compact by reducing the width of the device in the direction of.

  Furthermore, in the ladle hot water supply apparatus of the present invention, the first speed reducer is an orthogonal axis type, the second speed reducer is a parallel axis type, and the output shaft of the second speed reducer and the arm drive shaft are in a straight line in series. A ladle with an arm drive system coupled to the top, wherein the backlash of the first reducer is less than 40 arminute, the backlash of the second reducer is less than 7 arminute, and the arm is driven by left and right rotation of the motor In the arm drive control system of the hot water supply device, the rotation angle of the output shaft of the first reduction gear is detected, and the rotation angle of the motor is controlled based on the detected rotation angle of the output shaft of the first reduction gear. The arm drive control system for operating the arm drive shaft is provided with an arm drive control system. It is possible to suppress the backlash low, there is an effect that.

It is a figure explaining the ladle hot-water supply apparatus which is 1 aspect of this invention. It is a figure explaining the detailed part of this invention. It is a figure explaining the ladle hot-water supply apparatus and arm drive control system of a prior art.

In order to describe the present invention in more detail, a mode for carrying out the present invention will be described below with reference to the drawings as appropriate with a suitable example.
Here, for example, an embodiment provided with the ladle hot water supply device 1 in the case where the molten metal heat-retaining furnace 21 is installed in the die casting machine 10 will be described with reference to FIG.
The ladle hot water supply device 1 is a device that automatically supplies the molten metal 22 to a cold chamber die casting machine, for example.
(1) Raddle 2 for pumping molten metal 22
(2) Arm 3 for transporting the ladle 2 from the molten metal warming furnace 21 to the pouring position of the die casting machine 10 (here, for example, there are a total of two arms)
(3) Motor (not shown), speed reducer (not shown), and chain (not shown) for driving the ladle 2 and the arm 3
Consists of.
The operation can be performed either manually or in conjunction with the die casting machine 10 main body.
As shown in FIG. 1, a die casting machine 10 used for casting includes an injection device (not shown) having an injection sleeve 11 and a ladle 2 for supplying a molten metal 22 into the injection sleeve 11 of the injection device. Prepare. The injection sleeve 11 of the injection device communicates with a cavity of a mold (not shown).
A pouring port 12 for supplying the molten metal 22 from the ladle 2 into the injection sleeve 11 is formed on the upper surface portion of the injection sleeve 11. The injection sleeve 11 is formed in a cylindrical shape, for example. The molten metal 22 supplied into the injection sleeve 11 configured in this way is injected and filled into the cavity as the plunger tip 13 advances to the cavity side of the mold.
The molten metal 22 supplied to the injection sleeve 11 is stored in a molten state in a molten metal heat-retaining furnace 21 installed at a predetermined position away from the injection sleeve 11. The molten metal 22 stored in the molten metal warming furnace 21 is pumped out of the molten metal warming furnace 21 by the ladle 2 attached to the tip of the arm 3, and is discharged and supplied into the injection sleeve 11.
Then, after being injected into the cavity of the mold and filling is completed, the casting of the product is repeatedly performed through, for example, mold clamping, mold opening, extrusion, taking out, cooling, and post-processing steps.

<First Embodiment>
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, a first embodiment of the invention will be described with reference to the drawings.
As shown in FIG. 2, the ladle water heater 1 according to the present invention includes a motor 31, a first speed reducer 32, a second speed reducer 33, an arm drive shaft 34, an arm 3, a ladle 2, and an encoder 35. For example, it is applied to a die casting machine.

  The output shaft of the motor 31 and the input shaft of the first reducer 32 are connected, the output shaft of the first reducer 32 and the input shaft of the second reducer 33 are connected, and the second reduction gear. The output shaft of the machine 33 and the arm drive shaft 34 are connected to each other, and the arm 3 is driven by the left and right rotational movement of the arm drive shaft 34.

The first reduction gear 32 is of an orthogonal axis type, and includes a reduction gear provided with a bevel gear (hereinafter simply referred to as a bevel gear) or a reduction gear provided with a worm gear (hereinafter simply referred to as a worm gear). In other cases, a suitable gear can be selected as needed.
The second speed reducer 33 is a parallel shaft type, and a planetary gear mechanism, a mechanism combining a spur gear and a differential gear, a ball speed reducer, and a wave gear device can be applied. A suitable gear can be selected as appropriate.

The first speed reducer 32 is preferably selected and used with a backlash of 40 arminute or less.
For example, there are a part of servo motors (for high-function motors) with a backlash of 1.5 armature, but the reduction ratio is 1/200, which further increases the price. The first reduction gear 32 according to the present invention needs to have a reduction ratio of 1/800, and is preferably low in cost.
Therefore, it is preferable to select a low-cost first reduction gear 32 that has a general industrial backlash of 40 arminute or less.
In the present embodiment, a bevel gear having a backlash of 20 to 40 armature is used as the first reduction gear 32.

It is preferable to select and use a second reduction gear 33 having a backlash of 7 armature or less. The output shaft of the second speed reducer 33 and the arm drive shaft 34 are connected in series on a straight line, and the arm 3 is driven by the left and right rotational movement of the arm drive shaft 34. It is possible to drive the arm 3 at 7 arminute or less.
In the present embodiment, a planetary gear mechanism having a backlash of 0.5 armature is used as the second speed reducer 33.

In the arm drive control system of the ladle hot water supply apparatus according to the present invention, the encoder 35 is provided on the output shaft of the first speed reducer 32. The encoder 35 detects the rotation angle of the output shaft of the first speed reducer 32, controls the rotation angle of the motor 31 based on the detected rotation angle of the output shaft of the first speed reducer 32, and It is possible to configure an arm drive control system including an arm operation control device capable of operating the drive shaft 34.
For the arm drive control system, for example, a suitable control method such as open loop control or closed loop control can be appropriately employed.
In addition, if the encoder 35 can control the arm drive shaft 34, the attachment position can be appropriately installed at a suitable position.

By adopting an orthogonal axis type for the first speed reducer 32, there is an effect that the width of the device in the direction of the arm drive shaft can be reduced and the apparatus can be made compact.
Further, by setting the backlash of the second reduction gear 33 to 7 armature or less, it is possible to suppress the backlash related to the rotation of the arm drive shaft.
Furthermore, by providing the encoder 35 on the output shaft of the first speed reducer 32, there is an effect that it is possible to configure an arm drive control system with reduced backlash.

  According to the present invention, in a ladle hot water supply apparatus having an arm for pouring molten metal, the output shaft of the motor and the input shaft of the first reduction gear are connected, and the output shaft of the first reduction gear and the second reduction gear are connected. The input shaft of the machine is connected, the output shaft of the second reducer and the arm drive shaft are connected, and the output shaft of the second reducer and the arm drive shaft are connected on a straight line. A ladle water heater having an arm drive system for driving an arm, wherein the first speed reducer is an orthogonal axis type and the second speed reducer is a parallel axis type. There is an excellent effect that the apparatus can be made compact by reducing the width of the device in the direction of.

  Furthermore, in the ladle hot water supply apparatus of the present invention, the first speed reducer is an orthogonal axis type, the second speed reducer is a parallel axis type, and the output shaft of the second speed reducer and the arm drive shaft are in a straight line in series. A ladle with an arm drive system coupled to the top, wherein the backlash of the first reducer is less than 40 arminute, the backlash of the second reducer is less than 7 arminute, and the arm is driven by left and right rotation of the motor In the arm drive control system of the hot water supply device, the rotation angle of the output shaft of the first reduction gear is detected, and the rotation angle of the motor is controlled based on the detected rotation angle of the output shaft of the first reduction gear. The arm drive control system for operating the arm drive shaft is provided with an arm drive control system. It is possible to suppress the backlash low, there is an excellent effect that.

  As described above, according to the present invention, it is possible to provide a ladle hot water supply device and an arm drive control system having excellent operational effects, and in a die casting machine, the backlash associated with the downsizing of the ladle hot water supply device and the rotation of the arm drive shaft can be achieved. It can be used and contributed in the field of keeping it low.

DESCRIPTION OF SYMBOLS 1 Ladle hot-water supply apparatus 2 Ladle 3 Arm 10 Die-casting machine 11 Injection sleeve 12 Pouring mouth 13 Plunger chip 21 Molten heat insulation furnace 22 Molten metal 31 Motor 32 1st reduction gear 33 Second reduction gear 34 Arm drive shaft 35 Encoder 41 Motor (Conventional) Technology)
42 Reducer (prior art)
43 Arm drive shaft (prior art)
44 Arm (prior art)
45 first gear 46 second gear 47 shaft 48 encoder (prior art)

Claims (8)

  In a ladle hot water supply apparatus having an arm for pouring molten metal, an output shaft of a motor and an input shaft of a first reducer are connected, and an output shaft of a first reducer and an input shaft of a second reducer are connected The output shaft of the second speed reducer and the arm drive shaft are connected, the first speed reducer is an orthogonal shaft type, the second speed reducer is a parallel shaft type, and the output shaft of the second speed reducer And the arm drive shaft are connected on a straight line, the backlash of the first speed reducer is 40 armcmute or less, the backlash of the second speed reducer is 7 armature or less, and the arm is driven by the left and right rotation of the motor. A ladle hot water supply apparatus comprising an arm drive system.   The ladle hot water supply apparatus according to claim 1, wherein the first reduction gear is a reduction gear provided with a bevel gear.   The ladle hot water supply apparatus according to claim 1, wherein the first reduction gear is a reduction gear provided with a worm gear.   The ladle hot water supply device according to any one of claims 1 to 3, wherein the second speed reducer is a speed reducer including a planetary gear mechanism.   The ladle hot water supply apparatus according to any one of claims 1 to 3, wherein the second speed reducer is a speed reducer including a mechanism in which a spur gear and a differential gear are combined.   The ladle hot water supply device according to any one of claims 1 to 3, wherein the second speed reducer is a ball speed reducer.   The ladle hot water supply device according to any one of claims 1 to 3, wherein the second speed reducer is a wave gear device.   The output shaft of the motor and the input shaft of the first reducer are connected, the output shaft of the first reducer and the input shaft of the second reducer are connected, the output shaft of the second reducer and the arm drive shaft The first speed reducer is an orthogonal axis type, the second speed reducer is a parallel axis type, the output shaft of the second speed reducer and the arm drive shaft are connected on a series straight line, Arm drive control of a ladle water heater equipped with an arm drive system in which the backlash of the speed reducer of 1 is 40 arminute or less, the backlash of the second speed reducer is 7 arminute or less, and the arm is driven by left-right rotation of the motor. In the system, the rotation angle of the output shaft of the first speed reducer is detected, and based on the detected rotation angle of the output shaft of the first speed reducer, the rotation angle of the motor is controlled, and the arm drive shaft is Make it work, Arm drive control system comprising the over arm motion controller.

Images