JP2748095B2 - Abrasive sprayer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous abrasive-blasting apparatus in which a plurality of blast guns are integrated into one, and abrasives are simultaneously sprayed from the plurality of blast-guns. More specifically, the present invention relates to a continuous-type abrasive injection device in which the amount of abrasive injected from each blast gun is controlled independently and independently.

[0002]

2. Description of the Related Art As described in Japanese Utility Model Publication No. 5-29816, for example, a conventional twin-type abrasive injection device injects air at a high speed from a plurality of nozzles to reduce a negative pressure generated by the air. The fine abrasive powder is sucked, and the sucked abrasive is ejected together with the high-speed airflow. In this case, the supply path for supplying the abrasive material to the nozzle is originally one, and the negative pressure of each of the nozzles is provided in the vicinity of the nozzle via a branch path or a manifold. It is designed to branch to the generating section.

[0003]

By the way, in the above-mentioned conventional apparatus, the amount of the abrasive sprayed from each nozzle is determined by the value of the negative pressure generated at the nozzle. is there. Further, the abrasive material sucked by the negative pressure is transported by a single supply path up to the vicinity of the nozzle, and each of the abrasive materials is manifolded in the vicinity of the negative pressure portion of each of the nozzles. This is to be distributed for each nozzle. Therefore, depending on the state of generation of the negative pressure in each of the nozzles, the amount of the abrasive material distributed in the manifold or the like varies. That is, there is a problem that it is difficult to control the amount of the abrasive sprayed from each blast gun. Further, there is a problem that the amount of the abrasive sprayed from the blast gun cannot be individually controlled for each blast gun, and step processing or the like cannot be performed. In order to solve such a problem, the present invention aims to provide an abrasive spraying apparatus in which the amount of abrasive supplied to each blast gun is controlled independently for each blast gun. Object of the Invention (Problem)
It is.

[0004]

Means for Solving the Problems To solve the above problems, the present invention takes the following measures. That is, a fine powdered abrasive is processed into a work (work).
The abrasive blasting device used for the blasting device of the blasting device which performs the processing of the workpiece by this, injects high-pressure air (compressed air) at a high speed, and A plurality of blast guns for sucking the fine powdered abrasive with a negative pressure generated by air injection (air injection) and further injecting the sucked abrasive onto the high-speed air flow are provided. number provided to each of the plurality of blast gun, the abrasive, respectively provided a plurality of supply pump for supplying separately and independently, a plurality of motors for driving the plurality of the feed pump each independently Provided, furthermore, the individual
In the middle of the supply path for connecting the supply pump and the respective blast gun, a measuring means for measuring the supply amount of the abrasive to the respective blast gun provided, whereas, the measurement results from the measuring means ( Based on the above data, a configuration is provided in which control means for independently controlling the rotation speeds of the individual motors for driving the individual supply pumps are provided. Further, in the above configuration, a motor for driving each of the supply pumps is formed by one motor, and a transmission unit for transmitting a rotational driving force from the motor to each of the supply pumps has a rotation speed for each supply pump. The transmission ratios of the abrasives are made different so that the discharge amount of the abrasive per unit time from each supply pump is made different.

[0005]

According to the present invention, the following effects are exhibited in the present invention. First, the abrasives 99 classified in the cyclone 6 and collected in the collection tank 4
As shown in FIG. 1, each of the blast guns 11, 1 and 1 is sucked by each supply pump 8 driven by a motor 7 and discharged from each of the supply pumps 8 to each of the supply paths 2.
2, 13, and 14. By the way, when the blast processing apparatus is in operation, high-pressure air (compressed air) is injected from each of the blast guns 11, 12, 13, and 14, so that the injection of the high-pressure air A negative pressure is generated in a part of each of the blast guns 11, 12, 13, and 14. By the action of this negative pressure,
The abrasive material 99 supplied to each of the blast guns 11, 12, 13, and 14 is sucked by the negative pressure, and rides on the high-speed air flow to form the blast guns 11, 12, 13, and 14. It will be injected from.

The grinding (working) of the work is performed by the injection of the abrasive material 99 onto the work. By the way, in the present invention, each of the above blast guns 11,
The supply of the abrasives 99 to 12, 13, and 14 is performed by supply pumps 81, 82, 83, and 84 provided separately and independently, and supply paths 2 provided from the supply pumps 81, 82, 83, and 84, respectively. It is what is done. Also,
A part of the supply path 2 is provided with measuring means 31, 32, 33, 34 for measuring the supply amount of the abrasive 99 for each supply path, and the measuring means 31, 32, 3
Each of the supply pumps 8 based on the measurement results from
The rotation speeds of 1, 82, 83 and 84 are controlled.

Accordingly, the supply pumps 81, 82, 8
3, 84, that is, each blast gun 1
The supply amounts of the abrasives 99 to 1, 12, 13, and 14 are individually controlled. Accordingly, the injection amount of the abrasive 99 from each of the blast guns 11, 12, 13, and 14 is controlled, and accordingly, the respective blast guns are used for, for example, rough processing, medium processing, and fine processing. , Finishing and the like. This makes it possible to perform step processing (grinding) by a series of injection actions,
By operating the injection device 1 including the group of blast guns 11, 12, 13, and 14, efficient grinding can be performed.

Incidentally, such a control operation of the abrasive injection amount can be performed by an operator (operator) manually operating the control means 5 on the basis of the measurement data from the measurement means 3. In addition, as shown in FIG. 1, the measurement data is directly input to the control means 5, and the motors 71, 72, 73, 74 are automatically controlled.
By controlling the rotation speed of the motor.

When only one motor 7 is used, the transmission ratios of the transmission means 551, 552, 553, and 554 are set (set) in advance. That is, by resetting the transmission ratio, the ratio of the supply amount of the abrasive to each of the blast guns 11, 12, 13, and 14 can be changed. Then, such a change in the transmission ratio is performed in a batch process. In addition, when the rotation speed of the motor 7 is changed by the control means 5 without changing the transmission ratio, the injection amount of the abrasive from the entire injection device 1 is changed. That is, the processing strength of the blast processing by the blast processing apparatus is changed (controlled).

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. The configuration of the present embodiment, as shown in FIG. 1, injects high-pressure air (compressed air) at a high speed,
A plurality of blasts for sucking the abrasive in the form of fine powder with the negative pressure generated by the high-speed air injection, and further, injecting the suctioned abrasive 99 onto the high-speed air flow Injection device 1 composed of guns 11, 12, 13, and 14, and each blast gun 1 forming the injection device 1
A plurality of supply pumps 81, 82, 83, 84 for supplying an abrasive 99 to each of 1, 12, 13, 14 and a motor 7 for driving the plurality of supply pumps 81, 82, 83, 84; , Each of the above blast guns 11, 12, 13,
14 and the supply pumps 81, 82, 83, 84, respectively.
Measuring means 31 and 3 for measuring the amount of abrasive 99 flowing through
2, 33, 34 and the measuring means 31, 32, 33, 3
4 basically includes control means 5 for controlling the rotation speed of the motor 7 for driving the supply pumps 81, 82, 83, 84 based on the measurement results (data) from 4.

In such a basic configuration, the motor 7 is an electric motor or the like.
As shown in FIG. 1, each supply pump 81, 82, 83,
A configuration in which each component is provided separately and independently for each 84;
Each of the supply pumps 81, 82, 8 by one motor 7
In some cases, all of the components 3 and 84 are driven. In the former case, the measuring means 31, 32, 3
Based on the measurement data from 3 and 34, the control means 5 controls the rotation speeds of the motors 71, 72, 73 and 74 separately and independently. On the contrary,
In the latter case, one motor 7 and each supply pump 81,
82, 83, 84, each transmission means 551,
Each of the transmission ratios 552, 553, and 554 is set to a predetermined value from the beginning, and by rotating the motor 7 at a constant rotation speed, each of the supply pumps 81, 82, The rotational speeds of 83 and 84 are set respectively.
Therefore, in this case, each blast gun 11, 12, 1
The difference between the values of the injection amounts of the abrasives 99 from 3 and 14 is determined by the transmission ratio of the transmission means 551, 552, 553 and 554.

In the above configuration, the injection device 1 for injecting the abrasive 99 toward the work comprises a plurality of blast guns 11, 12, 13, and 14. And
Each of these blast guns is of the ejector type, injects high-pressure air (compressed air) from the nozzle at a high speed, and generates a negative pressure on the back of the nozzle by high-speed injection of air from the nozzle. Then, based on the negative pressure, the abrasive 99 in the form of fine powder is put on the airflow and jetted onto the work. In the present embodiment, a plurality (four) of the blast guns 11, 12, 13, and 14 configured as described above are integrated together, and the abrasive 99 is sprayed toward the work. Things.

In such a configuration, the injection device 1
The specific configuration between the tank and the recovery tank 4 serving as a supply base of the abrasive 99 to the injection device 1 is as shown in FIG. That is, an injection device 1 which is housed in the cabinet 9 together with the work and the like and is composed of a blast gun for spraying the abrasive 99 toward the work,
A tubular supply path 2 for supplying the abrasive 99 to the injection device (blast gun) 1, a buffer device 25 connected to the supply path 2 and also communicating with the discharge port of the supply pump 8, A supply pump 8 for discharging the abrasive material 99, a motor 7 for driving the supply pump 8, transmission means 55 for transmitting a driving force from the motor 7 to the supply pump 8, and provided in the middle of the supply path 2 Measuring means 3 for measuring the amount of the abrasive 99 flowing in the supply path 2, and control means 5 for controlling the rotation speed of the motor 7 based on the measurement result (data) from the measuring means 3. A recovery device 95 for recovering the abrasive and the like sprayed from the spraying device (blast gun) 1;
A cyclone 6 for classifying the used abrasives 99 and the like collected in 5 and an abrasive 9 classified by the cyclone 6
And a recovery tank 4 that serves to supply 9 to the supply pump 8.

In such a configuration, the transmission means 55 provided between the motor 7 and the supply pump 8 is constituted by a gear train or a belt transmission mechanism including a pulley and a belt. And the motor 7
Is composed of one motor, the transmission means 55 is provided with a different transmission ratio for each of the supply pumps 81, 82, 83, 84. That is, as shown in FIG. 1, individual transmission means 551, 552, 553 having different transmission ratios, respectively.
554 are provided. Therefore, in this case, in order to change the injection ratio of the abrasive 99 from each of the blast guns 11, 12, 13, and 14, it is necessary to change each of the transmission ratios of the transmission means 551, 552, 553, and 554. There is. That is, it is necessary to change the gear ratio of the gear train forming the transmission means 55 or the pulley ratio of the belt transmission mechanism.

In such a configuration, each of the blast guns 11, 1
Measuring means 31, 32, 33, 34 for measuring the supply amount of the abrasive 99 per unit time to 2, 13, 14 are provided. As shown in FIG. 2, the unit 3 serving as the basis of these measuring means basically includes a light emitting means 331 composed of a laser light transmitting means and the like,
And a light receiving means 333 for receiving the laser light from the light emitting means 1.
The transparent part 21 formed in a part of the supply path 2 is installed between the two. The transparent section 21 has a rectangular cross-sectional shape, and the light emitted from the light emitting unit 331 emits light from the transparent section 2.
1 is incident on the surface at a right angle. The measurement result (data) detected at the light receiving unit 333 is displayed on the display unit 339. Accordingly, the operator (operator) looks at the result displayed on the display means 339, and
The control means 5 is operated by a manual operation or the like, whereby the rotation speed of the motor 7 can be controlled.
In place of such manual control, the measuring means 3
It is also possible to directly input the measurement results (data) from the control unit 5 to the control unit 5 described later, thereby performing automatic control.

Next, the control means 5 for controlling the rotation speed of the motor 7 for driving the supply pump 8 in response to the signal from the measuring means 3 is formed mainly by arithmetic means such as a microprocessor unit. And a microcomputer. The control means 5 controls the rotation speeds of the motors 71, 72, 73, 74 by directly inputting the data based on the measurement data from the measurement means 31, 32, 33, 34. An automatic control system that individually controls the system and a manual control system that performs control by manual operation of an operator (operator) based on the measurement result (data) can be considered.

[0017] In the above configuration,
The lower part of the cabinet 9 in which the series of blast guns 11, 12, 13, and 14 are housed is a collection duct for collecting the abrasive 99 and the like sprayed from the series of blast guns 11, 12, 13, and 14. A recovery device 95 is provided, and the recovery device 95 is connected to the cyclone 6. And the said cyclone 6
Used abrasive 99 collected by the collecting device 95
And the like, and a weak negative pressure is applied to the cyclone 6 from a dust collector (not shown).

Next, a description will be given of the operation of the present embodiment having the above-described structure. The basic operation mode of the present embodiment is the same as that described in the section of the operation. That is, the abrasives 99 classified by the cyclone 6 and collected in the collection tank 4 are supplied to the respective supply pumps 81, 82, 83, 84 driven by the motor 7, as shown in FIG.
And is discharged to the supply path 2. The abrasive material 99 supplied to the supply path 2 is supplied to the blast guns 11, 1
It is sucked into 2, 13, and 14, and is sprayed toward the work. In such a process, the control means 5 operates based on the measurement data from each of the measurement means 31, 32, 33, and 34 provided in a part of the supply path 2, and the rotation speed of the motor 7 is controlled. It will be. Thus, the injection amount of the abrasive 99 from each of the blast guns 11, 12, 13, and 14 is controlled, and the abrasive injection amount and the injection state of the entire injection device 1 are controlled.

[0019]

According to the present invention, an abrasive used in the blasting apparatus of a blasting apparatus for injecting a fine-powder-like abrasive toward a workpiece (work), thereby processing the workpiece. With respect to the injection device, high-pressure air (compressed air) is injected at a high speed, and the fine powdered abrasive is sucked at a negative pressure generated by the high-speed air injection (air injection). , the suction abrasive provided a plurality of blast gun for jetting put into the air flow of the high velocity, each of the plurality of blast gun, each provided a plurality of supply separately and independently of the abrasive the feed pump is provided, the plurality of feed pumps respectively provided a plurality of motor driven separately and independently, and further, the supply path for connecting between the respective supply pumps and individual blast gun During a measurement means for measuring the supply amount of the abrasive to the respective blast gun provided, whereas, based on the measurement results from the measuring means (data) of individual motors for driving the respective supply pump Rotation speed,
Since a configuration is adopted in which control means for controlling each of the blast guns are provided independently, the injection amount of the abrasive from each blast gun is accurately controlled, and rough processing is performed by each blast gun. In addition, step processing such as medium processing, fine processing, and finishing processing can be performed. Therefore, by operating an injection device including a group of blast guns, the processing efficiency can be improved. On the other hand, since one motor is used and each supply pump driven by the one motor is provided with a transmission means having a different transmission ratio, each blast is used. By controlling the rotation speed of the motor without changing the ratio of the injection amount of the abrasive from the gun, it becomes possible to change the injection intensity of the entire injection device, thereby controlling the processing speed, Work efficiency for work processing can be improved.

[Brief description of the drawings]

FIG. 1 is a skeleton diagram showing the overall configuration of the present invention.

FIG. 2 is a skeleton diagram showing an entire configuration of one unit of the abrasive spray device according to the present invention.

[Description of Signs] 1 Injection device 11 Blast gun 12 Blast gun 13 Blast gun 14 Blast gun 2 Supply path 21 Transparent part 25 Buffer device 3 Measuring means (unit) 31 Measuring means 32 Measuring means 33 Measuring means 331 Light emitting means 333 Light receiving means 339 display means 34 measuring means 4 collection tank 5 control means 55 transmitting means 551 transmitting means 552 transmitting means 553 transmitting means 554 transmitting means 6 cyclone 7 motor 71 motor 72 motor 73 motor 74 motor 8 motor 8 supply pump 81 supply pump 82 supply pump 83 supply Pump 84 Supply pump 9 Cabinet 95 Collection device 99 Abrasive

Claims (2)

(57) [Claims] 1. A high-pressure air (compressed air) is jetted at a high speed in an abrasive jetting device of a blasting machine for jetting a fine powdered abrasive toward a work (work). A blast gun that sucks the fine powdered abrasive with the negative pressure generated by the air injection (air injection) of the above, and further injects the sucked abrasive onto the high-speed air flow. plurality is provided, on each of the plurality of blast gun, a plurality of motors for driving said abrasive respectively provided a plurality of supply pump for supplying separately and independently, each independently of the plurality of feed pump the provided further, in the middle of the supply path that connects between the respective supply pumps and individual blast gun, provided with measuring means for measuring the supply amount of the abrasive to the respective blast gun, whereas, The Measurement results (data) from measurement means
And a control means for independently controlling the rotation speeds of the individual motors for driving the individual supply pumps based on the above. 2. A high-pressure air (compressed air) is jetted at a high speed in an abrasive jetting device of a blasting machine for jetting a fine powdered abrasive toward a workpiece (work). A blast gun that sucks the fine powdered abrasive with the negative pressure generated by the air injection (air injection) of the above, and further injects the sucked abrasive onto the high-speed air flow. plurality is provided, on each of the plurality of blast gun, the abrasive, respectively provided a plurality of supply pump for supplying separately and independently, provide a motor for driving the plurality of supply pump at the same time, from the motor the rotational driving force as well as transmitted to the individual supply pump, the speed of the rotary motion of the motor to be transmitted from said motor to said individual feed pump (rotational speed),
A transmission means having a configuration different for each of the individual supply pumps is provided, and further, in the middle of each supply path connecting the individual supply pumps and the individual blast guns, to the respective blast guns. provided measuring means for measuring the supply amount of the abrasive, whereas, based on the measurement result (data) from the measuring means, it having the configuration in which the provision of control means for controlling the rotational speed of the motor An abrasive injection device characterized by the above-mentioned.