阅读说明：本技术 喷射处理装置和喷射处理方法 (Jet processing apparatus and jet processing method ) 是由 家守修一 见城维佐久 北河理宏 神山拓哉 于 2021-03-30 设计创作，主要内容包括：本发明提供一种能进一步提高防止喷射材料飞散功能的喷射处理装置和喷射处理方法。包括：对工件(W)进行喷射处理的投射机构(4)、内置投射机构(4)的机壳(2)、检测工件(W)上表面的高度位置的高度传感器(9)、搬运工件(W)的搬运机构(3)、防止喷射材料从设于机壳(2)的一个侧面的搬入口飞散的防止飞散罩(2c)、使防止飞散罩(2c)上下移动的驱动机构(7)、以及控制驱动机构(7)的控制部(12)。控制部(12)基于高度传感器(9)的输出来设定防止飞散罩(2c)的位置。(The invention provides a spray processing device and a spray processing method capable of further improving the function of preventing spray materials from flying. The method comprises the following steps: the device comprises a projection mechanism (4) for performing spray processing on a workpiece (W), a housing (2) with the projection mechanism (4) built therein, a height sensor (9) for detecting the height position of the upper surface of the workpiece (W), a conveying mechanism (3) for conveying the workpiece (W), a scattering prevention cover (2c) for preventing the spray material from scattering from a conveying inlet arranged on one side surface of the housing (2), a driving mechanism (7) for enabling the scattering prevention cover (2c) to move up and down, and a control part (12) for controlling the driving mechanism (7). The control unit (12) sets the position of the anti-scatter cover (2c) on the basis of the output of the height sensor (9).)

1. A spray processing apparatus including a projection mechanism for performing a spray process on a workpiece and a housing in which the projection mechanism is built, comprising:

a height sensor that detects a height position of an upper surface of the workpiece;

a conveying mechanism that conveys the workpiece;

a scattering prevention cover for preventing the spray material from scattering from a carrying-in port arranged on one wall surface of the machine shell;

a drive mechanism for moving the scattering prevention cover up and down; and

a control section that controls the drive mechanism,

the control unit sets the position of the scattering prevention cover based on the output of the height sensor.

2. The spray treatment device of claim 1,

also comprises a blower mechanism which blows away the sprayed material on the workpiece,

the control unit moves the blower mechanism up and down in conjunction with the up and down movement of the scatter prevention cover by the drive mechanism.

3. The spray treatment device of claim 1 or 2,

at least either one of the carry-in port and the carry-out port opened at a position opposed to the carry-in port includes an anti-scattering member for preventing scattering of the ejection material,

the scattering prevention member is configured by a plurality of linear bodies that sandwich the workpiece that has passed through, and that are provided in a direction protruding toward the workpiece and have flexibility.

4. The spray treatment device of claim 2 or 3,

the drive mechanism includes:

a first roller;

a drive source that rotationally drives the first roller;

a second roller driven to be synchronized with the first roller;

a cover wire rod having one end fixed to the scattering prevention cover and the other end wound around the second roller; and

and a blower wire having one end fixed to the blower mechanism and the other end wound around the first roller.

5. The spray treatment apparatus according to any one of claims 1 to 4,

the control section includes a recording section for recording the image data,

the control unit performs the following operations:

determining a class of the workpiece based on a height position of the upper surface of the workpiece detected by the height sensor,

setting the ejection processing conditions corresponding to the determined type of the workpiece to at least one of the mechanisms of the ejection processing apparatus including the projection mechanism, the drive mechanism, and the transport mechanism,

and recording the determined type of the workpiece and the set and executed jetting processing conditions in the recording part.

6. The spray treatment apparatus according to any one of claims 1 to 5,

includes a front end sensor that detects a front end of the workpiece,

the control unit controls the operation of each unit of the injection processing device based on the output of the tip end sensor,

the control includes at least either one of the carrying mechanism and the projecting mechanism.

7. A method for treating a liquid by spraying a liquid,

the spray processing method is performed by a spray processing apparatus including a projection mechanism for performing spray processing on a workpiece and a housing in which the projection mechanism is built, and includes:

detecting the height position of the upper surface of the workpiece;

carrying out a spray treatment on the workpiece while conveying the workpiece;

setting a position of a scattering prevention cover for preventing the spray material from scattering from a carrying-in port provided on one wall surface of the housing based on a height position of the upper surface of the workpiece; and

the position of a blower mechanism for blowing the spray material of the workpiece is set in synchronization with the anti-scattering cover.

8. The spray processing method according to claim 7, comprising:

determining a class of the workpiece based on a height position of an upper surface of the workpiece;

setting a spray process corresponding to the determined type of the workpiece;

executing the set injection treatment; and

recording the determined type of the workpiece and the executed jetting process.

9. The spray processing method according to claim 7 or 8,

detecting the front end of the workpiece,

controlling each action of the injection processing method based on the detected position of the tip,

the control includes at least one of control of conveyance of the workpiece and control of the ejection processing of the workpiece.

10. A spray treatment method according to any one of claims 7 to 9,

the workpiece is an H-shaped steel which is conveyed with the web positioned in the vertical direction.

Technical Field

The present invention relates to an ejection processing apparatus and an ejection processing method.

Background

Conventionally, a blasting apparatus for projecting or blasting a blasting material onto a surface of a workpiece such as a steel material to process the workpiece has been used in surface processing such as shot blasting for removing scale, burrs, surface roughness, and the like, or bead blasting for improving fatigue strength. When the workpiece is a long strip, the following apparatus is used: the spray processing chamber is provided with a carrying-in port and a carrying-out port, and spray processing is performed while a workpiece is passed through the carrying-in port to the carrying-out port. Since the carrying-in port and the carrying-out port are opened, the blasting material used in the blasting process may be scattered to the outside of the blasting apparatus. Therefore, a mechanism for preventing the ejection material from leaking to the outside of the ejection device is required.

Patent document 1 discloses a blasting machine for performing blasting of H-shaped steel. The above documents describe the following: in order to prevent the scattering of the shot material that collides with the workpiece, an air blower that blows air toward the upper surface of the H-shaped steel is provided to blow the shot material remaining on the upper surface of the H-shaped steel, thereby suppressing the scattering of the shot material.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open No. 2012-030313

In the apparatus of patent document 1, although scattering of the blasting material can be suppressed, further improvement in performance for preventing scattering of the blasting material is desired in order to further improve the working environment.

Disclosure of Invention

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a spray processing apparatus and a spray processing method capable of further improving a function of preventing a spray material from scattering.

The present invention adopts the following means to solve the above-described problems.

That is, the spray processing apparatus according to one aspect of the present invention is a spray processing apparatus including a projection mechanism for performing a spray processing on a workpiece and a housing having the projection mechanism built therein. The above-mentioned spray processing device includes: a height sensor that detects a height position of an upper surface of the workpiece; a conveying mechanism that conveys the workpiece; a scatter prevention cover for preventing the spray material from scattering from a carrying-in port arranged on one wall surface of the machine shell; a drive mechanism for moving the scatter prevention cover up and down; and a control unit that controls the drive mechanism. The control unit sets the position of the scattering prevention cover based on the output of the height sensor.

According to the invention, the scattering prevention cover of the carrying-in port is positioned based on the height of the upper surface of the workpiece, so that the spray material can be prevented from scattering from the carrying-in port.

In one aspect of the present invention, the workpiece processing apparatus further includes a blower mechanism for blowing the shot material on the workpiece, and the control unit moves the blower mechanism up and down in conjunction with the up and down movement of the scattering prevention cover by the drive mechanism.

According to the above configuration, since the blower mechanism is positioned in conjunction with the scattering prevention cover positioned based on the height of the upper surface of the workpiece, the blast material on the workpiece after the blast processing can be blown off, and the blast material can be prevented from scattering to the outside of the blast processing apparatus.

In one aspect of the present invention, at least one of the carry-in port and the carry-out port (the carry-out port that is open at a position facing the carry-in port) includes a scattering prevention member that prevents scattering of the shot material. The scattering prevention member is configured by a plurality of linear bodies that sandwich a workpiece that passes through the linear bodies, and that are provided in a direction that protrudes toward the workpiece and that have flexibility.

According to the above configuration, since the scattering prevention member is provided in addition to the scattering prevention cover, the ejection material can be reliably prevented from scattering from the carry-in port side.

In one aspect of the present invention, a drive mechanism includes: a first roller; a drive source that drives the first roller to rotate; a second roller driven to be synchronized with the first roller; a cover wire rod, one end of which is fixed on the anti-scattering cover and the other end of which is wound on the second roller; and a blower wire having one end fixed to the blower mechanism and the other end wound around the first roller.

According to the above configuration, the scatter prevention cover and the blower mechanism are moved up and down in an interlocking manner by the driving mechanism, and therefore the present invention can be suitably implemented.

In one aspect of the present invention, the control unit includes a recording unit, and performs the following operations: the type of the workpiece is determined based on the height position of the upper surface of the workpiece detected by the height sensor, the ejection processing conditions corresponding to the determined type of the workpiece are set in at least any one of the mechanisms of the ejection processing apparatus including the projection mechanism, the drive mechanism, and the transport mechanism, and the determined type of the workpiece and the set and executed ejection processing conditions are recorded in the recording section.

According to the above-described configuration, since the type of the workpiece is determined based on the height of the upper surface of the workpiece, and the ejection processing conditions corresponding to the type of the workpiece are set to the projection mechanism, the conditions for the ejection processing can be appropriately selected. Further, since the determined type of the workpiece and the set and executed ejection processing conditions are recorded in the recording unit, the history of operation data of the ejection processing apparatus can be recorded.

In one aspect of the present invention, a tip sensor that detects a tip of a workpiece is provided, and the control unit controls the operation of each unit of the injection processing apparatus including either one or both of the conveyance mechanism and the projection mechanism based on an output of the tip sensor.

According to the structure as described above, it is possible to determine the position from the leading end of the workpiece and to perform the blasting process on a desired portion of the workpiece.

The spray processing method according to another aspect of the present invention is performed by a spray processing apparatus including a projection mechanism for performing a spray process on a workpiece and a housing having the projection mechanism built therein. The above-described spray treatment method includes the following (1) to (4).

(1) The height position of the upper surface of the workpiece is detected.

(2) The workpiece is subjected to a blasting process while being conveyed.

(3) A position of a scattering prevention cover for preventing the spray material from scattering from a carrying-in port provided on one wall surface of the housing is set based on a height position of the upper surface of the workpiece.

(4) The position of a blower mechanism for blowing the spray material of the workpiece is set in conjunction with the scattering prevention cover.

According to the invention, the scattering prevention cover of the carrying-in port is positioned based on the height of the upper surface of the workpiece, so that the spray material can be prevented from scattering from the carrying-in port. Further, since the blower mechanism is positioned in conjunction with the scattering prevention cover positioned based on the height of the upper surface of the workpiece, the blast material on the workpiece after the blast processing can be blown off, and the blast material can be prevented from scattering to the outside of the blast processing apparatus.

In one embodiment of the present invention, the method includes the steps of:

determining a class of the workpiece based on a height position of an upper surface of the workpiece;

setting a spray process corresponding to the determined type of the workpiece;

executing the set injection treatment; and

the determined type of the workpiece and the executed ejection process are recorded.

According to the above-described configuration, since the type of the workpiece is determined based on the height of the upper surface of the workpiece, and the ejection processing conditions corresponding to the type of the workpiece are set to the projection mechanism, the conditions for the ejection processing can be appropriately selected. Further, since the determined type of the workpiece and the set and executed ejection processing conditions are recorded in the recording unit, the history of operation data of the ejection processing apparatus can be recorded.

In one aspect of the present invention, the method includes the steps of: detecting the front end of the workpiece; and controlling each action of the injection processing method based on the detected position of the leading end. The control includes at least one of control of conveyance of the workpiece and control of the ejection processing of the workpiece.

According to the structure as described above, it is possible to determine the position from the leading end of the workpiece and to perform the blasting process on a desired portion of the workpiece.

In one aspect of the present invention, the workpiece is an H-shaped steel that is conveyed with the web positioned in the vertical direction.

According to the above-described structure, the web is conveyed while being positioned in the vertical direction by the H-shaped steel, and therefore, the web can be conveyed without the depressed portions of the H-shaped steel.

According to the present invention, it is possible to provide a spray processing apparatus and a spray processing method capable of further improving the function of preventing scattering of the spray material.

Drawings

Fig. 1 is a side view schematically showing a spray processing apparatus according to an embodiment of the present invention.

Fig. 2 is a front view schematically showing an ejection processing apparatus according to an embodiment of the present invention.

Fig. 3 is an enlarged view of a section B-B of fig. 1.

Fig. 4 is an enlarged view a-a of fig. 1.

Fig. 5 is an enlarged view of the section a-a of fig. 4.

Fig. 6 is an enlarged view from D-D of fig. 1.

Fig. 7 is an enlarged view of C-C of fig. 1.

Fig. 8 is a schematic diagram schematically showing the structure of the drive mechanism 7.

Fig. 9 is an enlarged view of section B-B of fig. 1.

Fig. 10 is an enlarged view a-a of fig. 1.

(symbol description)

1 spray treatment device

2 case

2c cover for preventing scattering

2g anti-scattering member

3 carrying mechanism

4 projecting mechanism (projector)

5-cycle mechanism

6 dust collector

7 driving mechanism

7a first roller

7b drive source (Motor)

7d second roller

7e cover wire

7f blower wire

8 blower mechanism

9 height sensor

10 front end sensor

12 control part

12a recording part

W workpiece (H section steel)

Detailed Description

(embodiment mode)

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Fig. 1 is a side view schematically showing a spray processing apparatus 1 according to an embodiment of the present invention, and fig. 2 is a front view thereof.

As shown in fig. 1, the spray processing apparatus 1 includes: a housing 2, a conveying mechanism 3, a projecting mechanism 4, a circulating mechanism 5, a dust collector 6, a driving mechanism 7, a blower mechanism 8, a height sensor 9, a front end sensor 10, and a control unit 12.

The housing 2 is formed in a box shape of metal or the like, and is formed to cover a conveying passage of the workpiece W conveyed by a conveying mechanism 3 described later. A carrying-in port 2a is opened in one wall surface of the casing 2, and a carrying-out port 2b is opened at a position facing the carrying-in port 2 a. The workpiece is inserted through the carry-in port 2a and the carry-out port 2 b.

The conveying mechanism 3 is a mechanism for conveying a workpiece. Here, the workpiece W of the present embodiment is an H-shaped steel, and is conveyed with the web positioned in the vertical direction.

The conveying mechanism 3 includes a plurality of cylindrical rollers 3a, and a sprocket 3b is attached to one side end of the rollers 3 a. The sprockets 3b are interlocked by a chain 3c and driven by an actuator 3 d.

The projection mechanism 4 is a mechanism for performing a spray process on the workpiece W with the spray material. The projection mechanism 4 is provided on the outer periphery of the housing 2 at a position substantially in the middle of the conveyance path of the workpiece W. Here, the projection mechanism 4 of the present invention includes: a projector that projects the spray material by using the centrifugal force of the impeller, and a sprayer that sprays both the compressed air and the spray material. In the present embodiment, the projection mechanism 4 is a projector. Fig. 3 is an enlarged view of a section B-B of fig. 1. As shown in fig. 3, in the present embodiment, the projection mechanism 4 is provided with five in the outer peripheral portion of the housing 2.

The circulation mechanism 5 is a mechanism for circulating and reusing the injection material in the casing 2. In the present embodiment, the present invention includes: a lower screw conveyor 5a, a bucket elevator 5b, an upper screw conveyor 5c, and a chute 5 d. The circulation operation of the spray material in the above-described apparatus will be described with reference to fig. 1 to 3. The blasting material projected onto the workpiece W by the projection mechanism 4 moves on an inclined surface 2d provided at a lower portion of the casing 2 and formed to descend toward the lower screw conveyor 5a, and is accumulated on the lower screw conveyor 5 a.

The lower screw conveyor 5a rotates in the axial direction to convey the shot material moving on the inclined surface 2d to the bucket elevator 5 b. The bucket elevator 5b scoops up the shot material collected by the lower screw conveyor 5a and conveys the shot material from the lower portion of the apparatus to the upper portion of the apparatus. The shot material conveyed to the upper part of the apparatus is thrown from the upper end of the bucket elevator 5c to the chute 5d, and conveyed to the upper screw conveyor 5c via the chute 5 d. The upper screw conveyor 5c conveys the shots in the axial direction, and supplies the shots to the respective shooting devices 4 via the shooting-material introducing hoses 5e of the respective shooting devices 4.

The dust collector 6 classifies dust generated when the blast processing and the blast material removal are performed into the blast material and the dust by the wind classification, and the dust collector 6 sucks only the dust.

The drive mechanism 7 is a mechanism for driving the scattering prevention cover 2 c. As shown in fig. 1, a scattering prevention cover 2c is provided at the carry-in port 2 a. As will be described in detail later, the scattering prevention cover 2c is moved up and down by the driving mechanism 7 so as to close the carrying-in port 2 a.

The blower mechanism 8 is a mechanism for blowing away the blasting material remaining on the upper surface of the workpiece W after the blasting process. The blower mechanism 8 is provided on the conveyance downstream side of the projection mechanism 4 inside the casing 2 (i.e., on the conveyance path, on the conveyance outlet 2b side with respect to a reference position (a position where the shot material strikes in this case)). The driving mechanism 7 moves the blower mechanism 8 up and down by the same amount of movement in conjunction with the up and down movement of the scatter prevention cover 2 c.

The blower mechanism 8 includes a blowout part 8a, a duct 8b, a bottomed cylindrical tube 8c, and a compressed air supply pipe 8 d. The duct 8b is provided so as to be movable up and down in the pipe body 8c by the drive mechanism 7, and the positions of the height of the duct 8b and the height of the blowout part 8a are set according to the height of the H-shaped steel W by the drive mechanism 7 receiving the instruction of the control part 12.

The height sensor 9 is a sensor that detects the height of the upper surface of the workpiece W. As shown in fig. 1 and 2, the height sensor 9 is provided at an upper portion of the carrying-in port 2a of the housing 2. In the present embodiment, the height sensor 9 irradiates the upper surface of the workpiece W with laser light in a vertically downward direction, and detects the reflection of the irradiated laser light, thereby detecting the distance from the upper surface of the workpiece W.

The front end sensor 10 is a sensor for detecting the front end of the workpiece W, and is provided on the left and right of the conveyance path near the lower portion of the conveyance port 2 a. The front end sensor 10 is composed of a light emitter provided on one of the right and left sides and a light receiver provided on the other side, and detects whether or not light emitted from the light emitter is received by the light receiver and whether or not the workpiece W is located at a position where the front end sensor 10 is provided.

The control section 12 controls the ejection processing apparatus 1 based on the outputs sent from the height sensor 9 and the front end sensor 10. The control will be described later. The control unit 12 is constituted by a CPU, a memory, a connector, a buffer memory, a network connection device, various recording devices, and the like, which are not shown in the drawings, and is one area on a control board that comprehensively controls individual operation processes shown below. The control board is included in a device for controlling the operation of the injection processing device 1, such as a Programmable Logic Controller (PLC), a motion controller such as a Digital Signal Processor (DSP), and various computing devices such as a Personal Computer (PC). In addition, the control will be described later.

The structure of the ejection processing apparatus 1 and the ejection processing method will be described in further detail.

Fig. 4 is an enlarged view a-a of fig. 1, showing a main part of the carry-in port 2 a.

As described above, the workpiece W is the H-shaped steel that is conveyed with the web Wa positioned in the vertical direction. The both sides 2e, 2e of the conveyance path through which the workpiece W is conveyed include anti-scattering members 2g each including a plurality of linear bodies 2f provided so as to protrude in a direction toward the left and right side surfaces of the workpiece W. The linear body 2f has flexibility and is provided so as to flex in the conveying direction when the workpiece W passes through. That is, the scattering prevention member 2g is a member that prevents the scattering of the blasting material by the linear body 2f provided so as to flex with the workpiece W inserted therebetween. In the present embodiment, the scattering prevention member 2g is disposed adjacent to the downstream side of the scattering prevention cover 2c in the conveying direction. That is, the carry-in port 2a, the scattering prevention cover 2c, and the scattering prevention member 2g are arranged in this order.

Fig. 5 is an enlarged view of a-a of fig. 4. As shown in fig. 5, the scattering prevention cover 2c includes a wire anchor 2h, an elastically deformable curtain body 2i, and a weight plate 2 j. The curtain body 2i is formed of a rubber sheet or the like, and its upper portion is suspended by a cover wire 7e described later in detail via a wire fixing member 2 h. A weight plate 2j is fixed to the lower portion of the curtain body 2i by a bolt 2 k. In the above-described configuration, the scattering prevention cover 2c is slidably suspended on the shaft body 2m, is pulled obliquely upward from the shaft body 2m by the cover wire 7e, and hangs vertically downward from the shaft body 2m due to the weight of the weight plate 2 h.

Fig. 6 is an enlarged view from D-D of fig. 1, and fig. 7 is an enlarged view from C-C of fig. 1. Fig. 6 and 7 show the main parts of the drive mechanism 7, respectively. Fig. 8 is a schematic diagram schematically showing the structure of the drive mechanism 7. The structure of the drive mechanism 7 will be described with reference to fig. 6 to 8.

The drive mechanism 7 includes: a first roller 7 a; a drive source 7b for driving the first roller 7a to rotate; an encoder 7c that detects rotation of the first roller 7 a; a second roller 7d driven in synchronization with the first roller 7 a; a cover wire 7e having one end fixed to the scattering prevention cover 2c and the other end wound around the second roller 7 d; and a blower wire 7f having one end fixed to the blower mechanism 8 and the other end wound around the first roller 7 a. The first roller 7a and the second roller 7d are connected by a drive wire 7 g. The drive wire 7g is wound around the two rollers 7a and 7d in order to transmit the rotation of the first roller 7a to the second roller 7b in synchronization.

In the present embodiment, the drive source 7b is a motor with a decelerator and a brake. The encoder 7c is a pulse counting encoder and outputs a pulse corresponding to the rotation angle. The output of the encoder 7c is sent to the control unit 12, and the control unit 12 controls the drive source 7b based on the output of the encoder 7 c. When the drive source 7b drives the first roller 7a to rotate, the blower wire 7f is wound in the first roller 7a or the blower wire 7f is wound out from the first roller 7a in accordance with the rotation, and the blower mechanism 8 is moved up and down in accordance with the length of the wound-in/wound-out blower wire 7 f.

The drive wire 7g transmits the rotation of the first roller 7a to the second roller 7d in synchronization with the rotation, and drives the second roller 7 d. When the driven second roller 7d rotates, the cover wire 7e is wound in the second roller 7d or the cover wire 7e is wound out of the second roller 7d in accordance with the rotation, and the scattering prevention cover 2c is moved up and down in accordance with the length of the wound-in/wound-out cover wire 7 e. Here, the driving mechanism 7 is configured to move the scattering prevention cover 2c and the blower mechanism 8 up and down by the same movement distance.

In this configuration, for example, the lengths of the cover wire 7e and the blower wire 7f are set in advance so that the positions of the lower end portion 2p of the scattering prevention cover 2c and the lower end portion 8p of the blower mechanism 8 are at the same height in advance. At this time, the distance L from the upper surface of the workpiece W (the upper surface of the upper flange of the H-shaped steel W) to the lower end portion 2p of the scattering prevention cover 2c and the distance M from the lower end portion 8p of the blower mechanism 8 after the arbitrary vertical movement of the scattering prevention cover 2c and the blower mechanism 8 are always the same distance (M ═ L).

The blower mechanism 8 may be provided with a height offset d (not shown). That is, the height of the lower end 8p of the blower mechanism 8 may be set to be higher than the height of the lower end 2p of the scattering prevention cover 2c by the distance d. In this case, the relationship between the distance M and L after the arbitrary vertical movement of the scattering prevention cover 2c and the blower mechanism 8 may be always M ═ L + d.

As shown in fig. 1 and 2, the control unit 12 of the present embodiment includes a recording unit 12a and a condition table 12 b. The control unit 12 specifies the type of the workpiece W based on the height of the upper surface of the workpiece W detected by the height sensor 9, sets the ejection processing conditions corresponding to the specified type of the workpiece W in at least one of the mechanisms of the ejection processing apparatus 1 including the projection mechanism 4, the drive mechanism 7, and the conveyance mechanism 3, and records the specified type of the workpiece W and the set and executed ejection processing conditions in the recording unit 12 a. Here, the mechanism for setting the ejection process conditions may include any one or any combination of two or more.

In the condition table 12b, the height information of the upper surface of the workpiece W and the ejection processing conditions are recorded in advance in association with the type of the workpiece W. The control section 12 receives the current height detection result of the upper surface of the workpiece W from the height sensor 9, and checks the type of the workpiece W corresponding to the height entered in the condition table 12b based on the obtained height, thereby specifying the type of the workpiece W. The control unit 12 also reads the ejection processing conditions corresponding to the type of the workpiece W from the condition table 12b, and sets the conditions in the projection mechanism 4. Here, the ejection processing conditions are set conditions including any one or any combination of the use/non-use of the individual projection mechanism 4, the projection amount of the ejection material, the projection angle of the ejection material, and the projection speed of the ejection material.

Next, the operation of the injection processing apparatus 1 according to the present embodiment will be described in the following steps (1) to (6) with reference to fig. 1, 3, 4, 8, 9, and 10.

(1) When the injection processing apparatus 1 is started, the conveyance mechanism 3 starts conveyance, and the lower screw conveyor 5a, the bucket elevator 5b, and the upper screw conveyor 5c also start circulation of the injection material. In this state, the H-section steel W is conveyed toward the conveyance port 2 a.

(2) When the front end sensor 10 detects the front end of the H-shaped steel W being conveyed, the control unit 12 controls the conveying mechanism 3 so that the H-shaped steel W moves from the front end position to a position where the height sensor 9 can irradiate and detect the height of the upper surface of the H-shaped steel W, and stops. At this position, the height sensor 9 irradiates laser light toward the upper surface of the H-shaped steel W to detect the height position of the H-shaped steel W.

(3) The control unit 12 controls the drive mechanism 7 based on the height of the upper surface of the H-shaped steel W received from the height sensor 9, and sets the heights of the scattering prevention cover 2c and the blower mechanism 8. In this case, in fig. 8, when the height of the lower end portion 2p of the scattering prevention cover 2c is set to be the same as the height of the lower end portion 8p of the blower mechanism 8, the heights L, M from the upper surface of the H-shaped steel W to the respective lower end portions 2p and 8p in the injection process are the same. As a practical setting L, M is of the order of mm, the lower ends 2p, 8p being positioned with a gap from the upper surface of the H-section steel.

(4) The control unit 12 then refers to the condition table 12b based on the height of the obtained H-section steel to determine the type of the H-section steel W. The control unit 12 reads the injection processing conditions associated with the determined type of the H-section steel W from the condition table 12b, and sets the conditions of the injection processing for each part of the injection processing apparatus 1. The above conditions include any one or any combination of the use/non-use of the separate projection mechanism 4, the projection amount of the ejection material, the projection angle of the ejection material, and the projection speed of the ejection material, as described above.

For example, in the case of H-shaped steel W having a predetermined height as shown in fig. 3, all of five projection mechanisms 4 provided on the outer peripheral portion of the housing 2 are driven. As shown in fig. 4, at this time, the lower end portion 2p of the scattering prevention cover 2c is positioned so as to leave a slight gap from the upper surface of the upper flange Wb of the H-shaped steel W.

Fig. 9 is an enlarged view of section B-B of fig. 1. Fig. 10 is an enlarged view a-a of fig. 1. Fig. 9 and 10 show the case where the height of the H-section steel W is lower than that of fig. 3 and 4.

As shown in fig. 10, in the same manner as the operation of fig. 4, the height sensor 9 irradiates the laser beam 9a toward the upper surface of the upper flange Wb of the H-shaped steel W, and detects the reflection of the laser beam 9a from the upper surface of the flange Wb, thereby detecting the height position of the workpiece (H-shaped steel) W. The height sensor 9 detects the height position of the H-shaped steel W of fig. 10, which is different from the height position of the H-shaped steel W of fig. 4.

In this case, as shown in fig. 9, since the height of the H-section steel W is low, the blasting process can be sufficiently performed by the blasting process performed by the four blasting mechanisms 4 other than the blasting mechanism 4a located at the upper portion. Therefore, the projection mechanism 4a positioned above is not used. At this time, as shown in fig. 10, the lower end portion 2p of the scattering prevention cover 2c is positioned at a position lower than that of fig. 4 with a slight gap from the upper surface of the upper flange Wb of the H-section steel W.

(5) The control unit 12 controls the injection processing apparatus 1 according to the injection processing conditions set by the above-described procedure. The control unit 12 drives the transport mechanism 3 to move from the front end position of the H-section steel W detected by the front end sensor 10 to the position where the blasting process is performed, moves the H-section steel W in the transport path, and performs the blasting process by the projection mechanism 4.

At this time, in the injection process, particularly in the case where the injection process is performed by driving all five injection mechanisms 4 as shown in fig. 3, the injection material injected into the H-shaped steel W may rebound to the inner wall of the H-shaped steel W or the housing 2, and a large amount of the injection material may be scattered in the direction of the carrying-in port 2 c. Even if the amount of the blasting material that flies apart is large as described above, the fly-away prevention cover 2c can reliably prevent the blasting material that has passed through the upper surface of the H-section steel W from flying apart. The scattering prevention member 2g closes the gap between the carrying-in port 2a and the H-shaped steel W so as to follow the cross-sectional shape of the H-shaped steel W, and therefore the scattering of the spray material at the lower portion of the scattering prevention cover 2c can also be prevented. The scattering prevention member 2g can also prevent the scattering of the blasting material along the lower surface of the workpiece.

(6) The portion subjected to the blasting process by the projecting mechanism 4 is further conveyed downstream in the conveyance path, and the blasting material remaining on the surface of the H-shaped steel W is blown off by the blower mechanism 8 and carried out to the outside of the blasting apparatus 1 through the carrying-out port 2 b. The control unit 12 records the type of the H-shaped steel W subjected to the spray processing and the spray processing conditions in the recording unit 12a, and ends the series of spray processing.

The ejection process is continued by repeating the above steps (1) to (6). When the result of detection by the height sensor 9 and the height of the upper surface of the H-shaped steel W including a certain range are considered to be the same as those in the case where the preceding processing is performed, that is, when the type of the H-shaped steel W is the same, the spraying processing is performed under the same conditions while keeping the previous spraying processing setting. In the case of a difference in height, that is, in the case of a difference in type of the H-section steel W, the spray treatment conditions are reset according to the above-described process.

As described above, in the present embodiment, the height of the scattering prevention cover 2c is set based on the height of the workpiece W, and therefore the scattering of the blast material from the carrying-in port 2a can be effectively prevented. Since the height of the blower mechanism 8 is set to the same movement amount in synchronization with the positioning of the scattering prevention cover 2c, the scattering of the injection material from the carrying-out port 2b can be effectively prevented. Since the scattering prevention cover 2c and the blower mechanism 8 are moved simultaneously by the drive mechanism 7, the scattering prevention function of the blasting material can be achieved with a simple device configuration. Further, since the anti-scattering cover 2c and the anti-scattering member 2g are provided on the carrying-in port 2a side, the ejection material can be more reliably prevented from scattering from the carrying-in port 2 a. The scattering prevention member 2g can also prevent the scattering of the blasting material along the lower surface of the workpiece.

The spray treatment determines the type of the H-shaped steel W based on the height position of the upper surface of the H-shaped steel W, and sets the spray treatment conditions obtained by the evaluation of the previous steps based on the type, so that the spray treatment conditions can be easily selected and the spray treatment of the mature steps can be performed. Since the type of the H-shaped steel W subjected to the spray processing and the spray processing conditions are recorded as history data, the history data of the spray processing for the product can be easily retrieved. Further, the historical operating data of the injection treatment device may be recorded by accumulating historical data of the injection treatment conditions. The maintenance timing of the ejection processing apparatus, the replacement timing of the replacement component, and the like can be appropriately set.

In the present embodiment, the movement distance of the anti-scattering cover 2c and the blower mechanism 8 is controlled by calculating the rotation angle detected by the encoder 7c, but the present invention is not limited to this, and the movement distance may be directly measured and controlled by a laser length measuring sensor.

In the present embodiment, the H-shaped steel is described as an example of the workpiece W, but the workpiece W is not limited thereto. The scattering prevention cover 2c and the blower mechanism 8 may be moved up and down with respect to the workpiece W having a plurality of heights based on the detected height of the workpiece W.

In the present embodiment, the scattering prevention cover 2c is controlled to cover a part of the carrying-in port, but is not limited thereto. The workpiece W passing through the carry-in port 2a may be detected by the front end sensor, and all the openings of the carry-in port 2c may be closed by the scatter prevention cover 2 c. The scattering prevention member 2g may be formed in not only one layer but also a plurality of layers.

In the present embodiment, the projection mechanism 4a shown in the upper part of fig. 9 is exemplified for the control of use/non-use of the plurality of projection mechanisms 4, but the present invention is not limited thereto. The projection mechanism 4 may be controlled to be used or not used in any combination according to the shape of the workpiece W and the type of the ejection process.

In the present embodiment, the scattering prevention member 2g is disposed near the carrying-in port 2a, but may be disposed near the carrying-out port 2 b.