JP7272308B2 - Shot processing device and shot processing method - Google Patents

Description

The present invention relates to a shot processing apparatus and a shot processing method.

Conventionally, for surface processing such as shot blasting for descaling, deburring, and surface roughening of workpieces such as steel, and shot peening for improving fatigue strength, shot material is projected or jetted onto the surface of the workpiece. A shot processing apparatus is used to process a workpiece by When the workpiece is long, an apparatus is used in which a shot processing chamber is provided with an inlet and an outlet, and shot processing is performed while the workpiece is passed from the inlet to the outlet. Since the carry-in port and the carry-out port are open, the shot material used for shot processing may be scattered outside the shot processing apparatus. Therefore, a mechanism is required to prevent the shot material from leaking out of the shot device.

Patent Literature 1 discloses a shot blasting apparatus for performing shot treatment of H-shaped steel. In this document, in order to prevent the shots from colliding with the workpiece from scattering, an air blower is provided to blow gas onto the upper surface of the H-section steel, and by blowing off the projection material remaining on the upper surface of the H-section steel, the projection material is removed. Suppressing scattering is described.

JP 2012-030313 A

Although the apparatus disclosed in JP-A-2003-200012 can also suppress the scattering of the shot material, it is desired to further improve the performance of preventing the shot material from scattering in order to further improve the working environment.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a shot processing apparatus and a shot processing method capable of further improving the shot material scattering prevention function. is.

In order to solve the above problems, the present invention employs the following means.
That is, the shot processing apparatus of the present invention is a shot processing apparatus that includes a projection mechanism that performs shot processing on a workpiece, and a cabinet that houses the projection mechanism. This shot processing apparatus includes a height sensor for detecting the height position of the upper surface of the workpiece, a transport mechanism for transporting the workpiece, and a scattering prevention cover for preventing the shot material from scattering from the entrance provided on one wall of the cabinet. , a driving mechanism for vertically moving the scattering prevention cover, and a control unit for controlling the driving mechanism. The controller sets the position of the anti-scattering cover based on the output of the height sensor.
According to this aspect of the invention, since the scattering prevention cover of the inlet is positioned based on the height of the upper surface of the workpiece, it is possible to prevent shot materials from scattering from the inlet.

In one aspect of the present invention, a blower mechanism for blowing off the shot material on the workpiece is further provided, and the control unit vertically moves the blower mechanism by the drive mechanism in conjunction with the vertical movement of the scattering prevention cover.
According to this configuration, the blower mechanism is positioned in conjunction with the anti-scattering cover positioned based on the height of the upper surface of the workpiece, so that the shot material on the workpiece after shot treatment can be blown off. It is possible to prevent the shot material from scattering to the outside of the shot 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 opened at a position facing the carry-in port) is provided with a scattering prevention member that prevents the shot material from scattering. The anti-scattering member is composed of a plurality of flexible linear bodies that sandwich a passing work and are planted in a direction protruding toward the work.
According to such a configuration, since the anti-scattering member is provided in addition to the anti-scattering cover, it is possible to reliably prevent the shot material from scattering from the entrance side.

In one aspect of the present invention, the drive mechanism includes a first roller, a drive source that rotationally drives the first roller, a second roller that is driven in synchronization with the first roller, and one end of the roller. A cover wire fixed to the scattering prevention cover and having the other end wound around the second roller, and a blower wire having one end fixed to the blower mechanism and having the other end wound around the first roller are provided.
According to such a configuration, the driving mechanism causes the scattering prevention cover and the blower mechanism to move up and down in conjunction with each other, so the present invention can be appropriately carried out.

In one aspect of the present invention, the control unit includes a recording unit, and the control unit identifies the type of the work based on the height position of the upper surface of the work detected by the height sensor, and determines the type of the identified work. A shot processing condition corresponding to the type is set in at least one of the mechanisms of the shot processing apparatus including the projection mechanism, the drive mechanism, and the transport mechanism, and the type of the specified work and the executed shot processing condition are set and recorded in the recording unit. to record.
According to such a configuration, the type of work is specified based on the height of the upper surface of the work, and the shot processing setting corresponding to the type of work is set in the projection mechanism, so that the shot processing conditions are appropriately selected. be able to. In addition, since the specified work type and the set and executed shot processing conditions are recorded in the recording unit, the operation history of the shot processing apparatus can be recorded.

In one aspect of the present invention, a leading edge sensor for detecting the leading edge of the workpiece is provided, and the control section operates each section of the shot processing apparatus, including either or both of the transport mechanism and the projection mechanism, based on the output of the leading edge sensor. to control.
According to such a configuration, it is possible to specify the position from the tip of the work and perform the shot processing on the necessary portion of the work.

A shot processing method according to the present invention is a shot processing method using a shot processing apparatus including a projection mechanism for performing shot processing on a workpiece and a cabinet housing the projection mechanism. This shot processing method includes the following (1) to (4).
(1) Detecting the height position of the upper surface of the workpiece.
(2) Shot processing while conveying the work.
(3) To set the position of a scattering prevention cover for preventing the shot material from scattering from the carry-in port provided on one wall surface of the cabinet, based on the height position of the upper surface of the workpiece.
(4) The position of the blower mechanism for blowing off the shot material from the workpiece should be set in conjunction with the scattering prevention cover.
According to this aspect of the invention, since the scattering prevention cover of the entrance is positioned based on the height of the front surface of the workpiece, it is possible to prevent shot material from scattering from the entrance. In addition, since the blower mechanism is positioned in conjunction with the anti-scattering cover that is positioned based on the height of the upper surface of the workpiece, the shot material on the workpiece after shot treatment can be blown off, and the shot material can be blown away from the outside of the shot treatment apparatus. It is possible to prevent the shot material from scattering.

In one aspect of the invention,
Identifying the type of workpiece based on the height position of the upper surface of the workpiece;
setting shot processing corresponding to the identified work type;
executing the set shot processing;
recording the type of work identified and the shot processing performed.
According to such a configuration, the type of work is specified based on the height of the upper surface of the work, and shot processing settings corresponding to the type of work are set in the projection mechanism, so that the conditions for shot processing are appropriately selected. be able to. In addition, since the specified work type and the set and executed shot processing conditions are recorded in the recording unit, the operation history of the shot processing apparatus can be recorded.

One aspect of the present invention includes detecting the tip of the workpiece and controlling each operation of the shot processing method based on the detected position of the tip. This control includes at least one of work transfer control and work shot processing control.
According to such a configuration, it is possible to specify the position from the tip of the work and perform the shot processing on the necessary portion of the work.

In one aspect of the present invention, the work is an H-section steel that is conveyed with the web vertically positioned.
According to such a configuration, the H-section steel is conveyed with the web positioned in the vertical direction, so that the H-section steel can be conveyed without the recessed portion.

According to the present invention, it is possible to provide a shot processing apparatus and a shot processing method that can further improve the scattering prevention function of shot material.

BRIEF DESCRIPTION OF THE DRAWINGS It is a side view which shows roughly the shot processing apparatus which concerns on embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a front view which shows roughly the shot processing apparatus which concerns on embodiment of this invention. 2 is an enlarged cross-sectional view taken along line BB of FIG. 1; FIG. FIG. 2 is an enlarged view taken along line AA of FIG. 1; FIG. 5 is an enlarged cross-sectional view taken along the line aa of FIG. 4; FIG. 2 is an enlarged view taken along line DD of FIG. 1; FIG. 2 is an enlarged view taken along line CC of FIG. 1; 3 is a schematic diagram schematically showing the configuration of a drive mechanism 7; FIG. 2 is an enlarged cross-sectional view taken along line BB of FIG. 1; FIG. FIG. 2 is an enlarged view taken along line AA of FIG. 1;

(embodiment)
BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a side view schematically showing a shot processing apparatus 1 according to an embodiment of the present invention, and FIG. 2 is its front view.
As shown in FIG. 1, the shot processing apparatus 1 includes a cabinet 2, a transport mechanism 3, a projection mechanism 4, a circulation mechanism 5, a dust collector 6, a drive mechanism 7, a blower mechanism 8, a height sensor 9, a tip sensor 10, a controller 12, including.

The cabinet 2 is made of metal or the like and has a box shape, and is formed so as to cover the transport passage of the work W transported by the transport mechanism 3 which will be described later. A carry-in port 2a is opened in one wall surface of the cabinet 2, and a carry-out port 2b is opened at a position opposite to the carry-in port 2a. A work is set so as to pass through the inlet 2a and the outlet 2b.

The transport mechanism 3 is a mechanism for transporting a work. Here, the work W in this embodiment is an H-section steel, and is conveyed with the web vertically positioned.
The conveying mechanism 3 has a plurality of cylindrical rollers 3a, and a chain wheel 3b is attached to one side end of the rollers 3a. The chain wheels 3b are linked by a chain 3c and driven by one actuator 3d.

The projection mechanism 4 is a mechanism for subjecting the workpiece W to shot treatment with a shot material. The projection mechanism 4 is provided on the outer periphery of the cabinet 2, and its position is approximately in the middle of the work W transfer passage. Here, the projection mechanism 4 in the present invention includes both a projection machine that projects shot material by the centrifugal force of an impeller and an injector that injects shot material together with compressed air. In this embodiment, the projection mechanism 4 is a projector. 3 is an enlarged cross-sectional view taken along line BB of FIG. 1. FIG. As shown in FIG. 3 , in this embodiment, five projection mechanisms 4 are provided on the outer periphery of the cabinet 2 .

The circulation mechanism 5 is a mechanism for circulating the shot material within the cabinet 2 for reuse. This embodiment includes a lower screw conveyor 5a, a bucket elevator 5b, an upper screw conveyor 5c, and a chute 5d. The shot material circulation operation of these devices will be described with reference to FIGS. 1 to 3. FIG. The shot material projected onto the workpiece W by the projection mechanism 4 moves on an inclined surface 2d provided in the lower part of the cabinet 2 and formed so as to descend to the lower screw conveyor 5a, and collects on the lower screw conveyor 5a.

The lower screw conveyor 5a conveys the shot material that has moved on the inclined surface 2d to the bucket elevator 5b by rotating in the axial direction. The bucket elevator 5b scoops up the shot material collected by the lower screw conveyor 5a and conveys the shot material from the lower part of the device to the upper part of the device. The shot material conveyed to the upper part of the apparatus is thrown out from the upper end of the bucket elevator 5c to the chute 5d and conveyed to the upper screw conveyor 5c via the chute 5d. The upper screw conveyor 5c conveys the shot material in the axial direction, and supplies the shot material to each projection mechanism 4 via the projection material introduction hose 5e of each projection mechanism 4. As shown in FIG.

The dust collector 6 classifies the dust generated during shot processing and shot material removal into shot material and dust by air classification, and sucks only the dust.

The driving mechanism 7 is a mechanism for driving the anti-scattering cover 2c. As shown in FIG. 1, the carry-in port 2a is provided with a scattering prevention cover 2c. Although the details will be described later, the scattering prevention cover 2c is moved up and down by the drive mechanism 7 so as to block the entrance 2a.

The blower mechanism 8 is a mechanism for blowing off the shot material remaining on the upper surface of the work W after shot processing. The blower mechanism 8 is provided on the transport downstream side of the projection mechanism 4 inside the cabinet 2 (that is, on the carry-out port 2b side with respect to the reference position (in this case, the location where the shot material is hit) in the transport passage). The driving mechanism 7 described above vertically moves the blower mechanism 8 by the same amount of movement in conjunction with the vertical movement of the scattering prevention cover 2c.

The blower mechanism 8 is composed of a blowout portion 8a, a conduit 8b, a cylindrical tubular body 8c with a bottom, and a compressed air supply pipe 8d. The conduit 8b is vertically movable within the tubular body 8c by means of a drive mechanism 7, and the height position of the conduit 8b is adjusted together with the blowout portion 8a in accordance with the height of the H-shaped steel W. set by mechanism 7;

The height sensor 9 is a sensor that detects the height of the upper surface of the work W. As shown in FIG. The height sensor 9 is provided above the entrance 2a of the cabinet 2, as shown in FIGS. In this embodiment, the height sensor 9 irradiates a laser vertically downward toward the upper surface of the work W, and detects the reflection of the irradiated laser, thereby detecting the distance to the upper surface of the work W. .

The leading end sensors 10 are sensors for detecting the leading end of the work W, and are provided on the left and right sides of the conveying passage in the vicinity of the lower portion of the carry-in port 2a. The tip sensor 10 is composed of a light emitter on one side and a light receiver on the other side. , it is detected whether or not the workpiece W is positioned.

The control unit 12 controls the shot processing device 1 based on the outputs transmitted from the height sensor 9 and the tip sensor 10 . Control will be described later. The control unit 12 is composed of a CPU, a memory, a connector, a buffer, a network connection device, various recording devices, and the like (not shown). It's about. The control board includes motion controllers such as programmable logic controllers (PLC) and digital signal processors (DSP), various arithmetic units such as personal computers (PC), and devices that control the operation of the shot processing apparatus 1 . Note that the control will be described later.

The configuration of the shot processing apparatus 1 and the shot processing method will be described in more detail.
FIG. 4 is an enlarged view taken along the line AA of FIG. 1, showing the main part of the entrance 2a.
As described above, the work W is an H-section steel that is conveyed with the web Wa vertically positioned. Both sides 2e, 2e of the transport passage through which the work W is transported are provided with anti-scattering members 2g composed of a plurality of linear bodies 2f planted so as to protrude in the left and right side directions of the work W. . This linear body 2f has flexibility, and is provided so as to bend in the transport direction when the work W passes. That is, the scattering prevention member 2g is a member that sandwiches the passing work W and prevents the shot material from scattering by means of the linear body 2f that is planted so as to bend. In this embodiment, the anti-scattering member 2g is arranged adjacent to the downstream side of the anti-scattering cover 2c in the transport direction. That is, the entrance 2a, the anti-scattering cover 2c, and the anti-scattering member 2g are arranged in this order.

FIG. 5 is an enlarged view taken along the line aa of FIG. As shown in FIG. 5, the anti-scattering cover 2c includes a wire fixture 2h, an elastically deformable screen 2i, and a weight plate 2j. The curtain body 2i is formed of a rubber sheet or the like, and its upper portion is suspended from a cover wire 7e, which will be described later in detail, by means of a wire fixture 2h. A weight plate 2j is fixed to the lower portion of the curtain body 2i with bolts 2k. In such a configuration, the anti-scattering cover 2c is slidably suspended from the shaft 2m, pulled obliquely upward from the shaft 2m by a cover wire 7e, and vertically downward from the shaft 2m. is suspended by the weight of the weight plate 2h.

6 is an enlarged view taken along line DD of FIG. 1, and FIG. 7 is an enlarged view taken along line CC of FIG. 6 and 7 show the essential parts of the drive mechanism 7, respectively. FIG. 8 is a schematic diagram schematically showing the configuration of the driving mechanism 7. As shown in FIG. The configuration of the driving mechanism 7 will be described with reference to FIGS. 6 to 8. FIG.

The driving mechanism 7 includes a first roller 7a, a driving source 7b for rotationally driving the first roller 7a, an encoder 7c for detecting the rotation of the first roller 7a, and a driving mechanism synchronously with the first roller 7a. A second roller 7d to be driven, a cover wire 7e having one end fixed to the scattering prevention cover 2c and the other end wound around the second roller 7d, one end fixed to the blower mechanism 8 and the other end and a blower wire 7f wound around the first roller 7a. The first roller 7a and the second roller 7d are connected by a drive wire 7g. The drive wire 7g is wound around both rollers 7a and 7d in order to synchronously transmit the rotation of the first roller 7a to the second roller 7b.

In this embodiment, the drive source 7b is a motor with a speed reducer and a brake. The encoder 7c is a pulse count encoder and outputs pulses corresponding to the rotation angle. The output of the encoder 7c is transmitted to the control section 12, and the control section 12 controls the drive source 7b based on the output of the encoder 7c. When the first roller 7a is rotated by being driven by the drive source 7b, the blower wire 7f is wound around the first roller 7a or unwound from the first roller 7a in response to the rotation. The blower mechanism 8 moves up and down corresponding to the length of the blower wire 7f taken/unwound.

The drive wire 7g transmits the rotation of the first roller 7a to the second roller 7d in synchronization with the rotation thereof, thereby driving the second roller 7d. When the driven second roller 7d rotates, the cover wire 7e is wound on the second roller 7d or unwound from the second roller 7d and wound/wound in correspondence with the rotation. The anti-scattering cover 2c moves up and down according to the length of the unwound cover wire 7e. Here, in the driving mechanism 7, the vertical movement of the scattering prevention cover 2c and the blower mechanism 8 are configured to have the same movement distance.

In this configuration, for example, the lengths of the cover wire 7e and the blower wire 7f are set so that the lower end 2p of the anti-scattering cover 2c and the lower end 8p of the blower mechanism 8 are at the same height. 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 after any vertical movement of the scattering prevention cover 2c and the blower mechanism 8. , the distance M to the lower end 8p of the blower mechanism 8 is always the same (M=L).

Of course, the blower mechanism 8 may be provided with a height offset d (not shown). That is, the height of the lower end portion 8p of the blower mechanism 8 can be set at a position higher than the height of the lower end portion 2p of the anti-scattering cover 2c by the distance d. In this case, the relationship between the distances M and L after any vertical movement of the anti-scatter cover 2c and the blower mechanism 8 can always be M=L+d.

As shown in FIGS. 1 and 2, the control unit 12 in this embodiment includes a recording unit 12a and a condition table 12b. The control unit 12 identifies the type of the work W based on the height of the upper surface of the work W detected by the height sensor 9, and sets the shot processing conditions corresponding to the identified type of the work W to the projection mechanism 4 and the drive. At least one of the mechanisms of the shot processing apparatus 1 including the mechanism 7 and the transport mechanism 3 is set, and the specified type of work W and the set and executed shot processing conditions are recorded in the recording unit 12a. Here, the mechanism for setting the shot processing conditions can include any one or any combination of two or more.

In the condition table 12b, information on the height of the upper surface of the work W and shot processing conditions are recorded in advance in association with the type of the work W. FIG. The control unit 12 receives the result of detection of the current height of the upper surface of the work W from the height sensor 9, and based on the obtained height, determines the height of the work W corresponding to the height registered in the condition table 12b. The type of work W is identified by collating the type. The control unit 12 further reads shot processing conditions corresponding to the type of work W from the condition table 12b and sets the conditions in the projection mechanism 4 . Here, the shot processing conditions are set conditions including use/non-use of the individual projection mechanism 4, shot material projection amount, shot material projection angle, shot material projection speed, or a combination of any of them. is.

Next, with reference to FIGS. 1, 3, 4, 8, 9, and 10, operations of the shot processing apparatus 1 according to the present embodiment will be described in order of (1) to (6).
(1) When the shot processing apparatus 1 is started, the conveying mechanism 3 starts conveying, and the lower screw conveyor 5a, the bucket elevator 5b, and the upper screw conveyor 5c also start circulating the shot material. In this state, the H-section steel W is conveyed toward the inlet 2a.

(2) When the tip sensor 10 detects the tip of the H-section steel W that has been conveyed, the control unit 12 detects the height of the upper surface of the irradiated H-section steel W from the tip position by the height sensor 9. The conveying mechanism 3 is controlled to move the H-shaped steel W to a detectable position and stop it. At that position, the height sensor 9 irradiates a laser toward the upper surface of the H-section steel W to detect the height position of the H-section steel W.

(3) The control unit 12 controls the driving mechanism 7 based on the height of the upper surface of the H-section steel W received from the height sensor 9, and sets the heights of the anti-scattering cover 2c and the blower mechanism 8. At this time, in FIG. 8, when the height of the lower end portion 2p of the scattering prevention cover 2c and the height of the lower end portion 8p of the blower mechanism 8 are set to be the same in advance, the H-section steel W being shot is processed. The heights L and M from the upper surface of the respective lower ends 2p and 8p are the same. As a practical setting, L, M are on the order of mm and each lower end 2p, 8p is positioned with a gap from the upper surface of the H-beam.

(4) Next, the control unit 12 refers to the condition table 12b based on the obtained height of the H-section steel, and identifies the type of the H-section steel W. The control unit 12 reads the shot processing conditions associated with the specified type of H-shaped steel W from the condition table 12b and sets the shot processing conditions for each unit of the shot processing apparatus 1 . As described above, this condition includes use/non-use of the individual projection mechanism 4, shot material projection amount, shot material projection angle, shot material projection speed, or any combination thereof.

For example, in the case of a tall H-section steel W as shown in FIG. 3, all five projection mechanisms 4 provided on the outer periphery of the cabinet 2 are driven. As shown in FIG. 4, at this time, the lower end portion 2p of the anti-scattering cover 2c is positioned on the upper surface of the upper flange Wb of the H-shaped steel W with a slight gap.

9 is an enlarged cross-sectional view taken along line BB of FIG. 1. FIG. FIG. 10 is an enlarged AA view of FIG. 1. FIG. 9 and 10 show the case where the height of the H-section steel W is lower than in FIGS. 3 and 4. FIG.
As shown in FIG. 10, the height sensor 9 irradiates the laser 9a toward the upper surface of the upper flange Wb of the H-shaped steel W, and detects the reflection of the laser 9a from the upper surface of the flange Wb in the same manner as in the operation of FIG. By doing so, the height position of the workpiece (H-section steel) W is detected. The height sensor 9 detects the height position of the H-section steel W in FIG. 10, which is different from the height position of the H-section steel W in FIG.
As shown in FIG. 9, in this case, since the height of the H-shaped steel W is low, shot processing by the four projection mechanisms 4 other than the projection mechanism 4a in the upper portion is sufficient for shot processing. Therefore, the setting is such that the projection mechanism 4a in the upper portion is not used. At this time as well, as shown in FIG. 10, the lower end 2p of the anti-scattering cover 2c is positioned at a position lower than in FIG.

(5) The control unit 12 controls the shot processing apparatus 1 according to the shot processing conditions set by the above procedure. The controller 12 drives the conveying mechanism 3 from the tip position of the H-section steel W detected by the tip sensor 10 to the position where shot processing is performed, moves the H-section steel W in the conveying passage, and shoots the H-section steel W with the projection mechanism 4 . process.

At this time, in the shot processing, especially when the shot processing is performed by driving all the five projection mechanisms 4 as shown in FIG. In some cases, the shot material rebounds on the inner wall of the inlet 2c, and a large amount of the shot material scatters in the direction of the inlet 2c. Even if a large amount of shot material scatters in this manner, the scattering prevention cover 2c can reliably prevent the shot material from passing over the upper surface of the H-shaped steel W from scattering. The anti-scattering member 2g closes the gap between the inlet 2a and the H-section steel W so as to follow the cross-sectional shape of the H-section steel W, so that the shot material under the anti-scattering cover 2c can also be prevented from scattering. The scattering prevention member 2g can also prevent the shot material from scattering along the lower surface of the work.

(6) The part shot by the projection mechanism 4 is further transported downstream of the transport passage, the shot material remaining on the surface of the H-shaped steel W is blown off by the blower mechanism 8, and the shot is processed from the carry-out port 2b. It is carried out to the outside of the device 1 . The control unit 12 records the type of the H-shaped steel W that has just been shot and the shot processing conditions in the recording unit 12a, and a series of shot processing ends.

By repeating the above steps (1) to (6), shot processing is continuously performed. As a result of detection by the height sensor 9, when the height of the upper surface of the H-section steel W is considered to be the same as that in which the previous processing was performed including a certain range, that is, when the type of the H-section steel W is the same In this case, shot processing is performed under the same conditions while holding the previous shot processing settings. When the height is different, that is, when the type of H-section steel W is different, the shot treatment conditions are reset according to the steps described above.

As described above, in the present embodiment, the height of the scattering prevention cover 2c is determined based on the height of the workpiece W, so that it is possible to effectively prevent the shot material from scattering from the entrance 2a. can. Since the height of the blower mechanism 8 is set with the same amount of movement so as to synchronize with the positioning of the scattering prevention cover 2c, scattering of the shot material from the outlet 2b can also be effectively prevented. Since the driving mechanism 7 moves the anti-scattering cover 2c and the blower mechanism 8 at the same time, the function of preventing the shot material from scattering can be implemented with a simple device configuration. Moreover, since the scattering prevention cover 2c and the scattering prevention member 2g are provided on the inlet 2a side, the scattering of the shot material from the inlet 2a can be more reliably prevented. The anti-scatter member 2g can also prevent the shot material from scattering along the lower surface of the work.

In the shot treatment, the type of the H-shaped steel W is specified based on the height position of the upper surface of the H-shaped steel W, and based on this type, the shot processing conditions obtained in advance by evaluating the process are set. Therefore, it is possible to easily select shot processing conditions and perform shot processing with a proven track record. Since the type of H-shaped steel W subjected to the shot treatment and the conditions of the shot treatment are recorded as history, the product history can be easily retrieved. In addition, by accumulating the history of shot processing conditions, it is possible to appropriately set the timing of maintenance of the shot processing apparatus, the timing of replacement of replacement parts, and the like.

In this embodiment, the movement distance of the scattering prevention cover 2c and the blower mechanism 8 is controlled by calculating the rotation angle detected by the encoder 7c, but the movement distance is directly measured by the laser length measurement sensor without being limited to this. can be controlled by

In the present embodiment, the H-shaped steel is described as an example of the work W, but the work W is not limited to this. By vertically moving the scattering prevention cover 2c and the blower mechanism 8, it can be effectively utilized.

In the present embodiment, the anti-scattering cover 2c is controlled to cover a part of the entrance, but the present invention is not limited to this. The cover 2c may be controlled to close all the openings of the carry-in port 2c. Moreover, the anti-scattering member 2g may be formed not only as one layer but also as a plurality of layers.

In the present embodiment, the use/non-use control of a plurality of projection mechanisms 4 is exemplified for the projection mechanism 4a in the upper portion shown in FIG. Depending on the type, the projection mechanism 4 may be controlled to be used/not used in any combination.

In this embodiment, the anti-scattering member 2g is arranged near the entrance 2a, but it may also be arranged near the exit 2b.

Reference Signs List 1 shot processing device 2 cabinet 2c anti-scattering cover 2g anti-scattering member 3 conveying mechanism 4 projection mechanism (projection machine)
5 circulation mechanism 6 dust collector 7 drive mechanism 7a first roller 7b drive source (motor)
7d Second roller 7e Cover wire 7f Blower wire 8 Blower mechanism 9 Height sensor 10 Tip sensor 12 Control unit 12a Recording unit W Work (H-section steel)

Claims (10)

A shot processing apparatus comprising: a projection mechanism for shot processing a workpiece; and a cabinet containing the projection mechanism,
a height sensor for detecting the height position of the upper surface of the work;
a transport mechanism for transporting the workpiece;
a scattering prevention cover for preventing scattering of the shot material from an entrance provided on one wall surface of the cabinet;
a driving mechanism for moving the scattering prevention cover up and down;
A control unit that controls the drive mechanism,
The shot processing apparatus, wherein the control section sets the position of the lower end portion of the scattering prevention cover with a gap with respect to the upper surface of the workpiece based on the output of the height sensor. further comprising a blower mechanism for blowing off the shot material on the work,
2. The shot processing apparatus according to claim 1, wherein said control unit vertically moves said blower mechanism in conjunction with vertical movement of said scattering prevention cover by means of said drive mechanism. At least one of the carry-in port and the carry-out port opened at a position facing the carry-in port is provided with a scattering prevention member for preventing scattering of the shot material,
3. The shot processing according to claim 1 or 2, wherein said anti-scattering member comprises a plurality of flexible linear bodies planted in a direction projecting toward said work while sandwiching said work passing therethrough. Device. The drive mechanism is
a first roller;
a driving source that rotationally drives the first roller;
a second roller driven in synchronization with the first roller;
a cover wire having one end fixed to the scattering prevention cover and the other end wound around a second roller;
3. The shot processing apparatus according to claim 2 , further comprising a blower wire having one end fixed to said blower mechanism and the other end wound around said first roller. The control unit comprises a recording unit,
The control unit
identifying the type of the workpiece based on the height position of the upper surface of the workpiece detected by the height sensor;
setting a shot processing condition corresponding to the identified type of workpiece in at least one of mechanisms of a shot processing apparatus including the projection mechanism, the drive mechanism, and the transport mechanism;
5. The shot processing apparatus according to any one of claims 1 to 4, wherein the specified work type and the set and executed shot processing conditions are recorded in the recording unit. Equipped with a tip sensor for detecting the tip of the workpiece,
The control unit controls the operation of each unit of the shot processing apparatus based on the output of the tip sensor,
6. The shot processing apparatus according to any one of claims 1 to 5, wherein said control includes at least one of said transport mechanism and said projection mechanism. A shot processing method by a shot processing apparatus comprising a projection mechanism for shot processing a workpiece and a cabinet containing the projection mechanism,
detecting the height position of the upper surface of the work;
performing shot processing while conveying the workpiece;
The position of the lower end of the scatter prevention cover that prevents the shot material from scattering from the carry-in port provided on one wall surface of the cabinet is set with a gap from the upper surface of the work, based on the height position of the upper surface of the work. to set
A shot processing method comprising setting a position of a blower mechanism for blowing off the shot material of the workpiece in synchronism with the scattering prevention cover. identifying the type of the work based on the height position of the upper surface of the work;
setting a shot process corresponding to the identified work type;
executing the set shot processing;
8. The shot processing method according to claim 7, further comprising recording the identified work type and the executed shot processing. detecting the tip of the workpiece;
controlling each operation of the shot processing method based on the detected tip position;
9. The shot processing method according to claim 7, wherein said control includes at least one of control of conveyance of said work and control of shot processing of said work. 10. The shot processing method according to any one of claims 7 to 9, wherein the work is an H-shaped steel conveyed with the web positioned vertically.

Images