JP6327150B2 - Shot processing device - Google Patents

Description

  The present invention relates to a shot processing apparatus that projects a projection material onto an object to be processed.

  As a shot blasting device, for example, a crane hanging type shot blasting device used for removing a scale of a metal product is known (for example, see Patent Document 1). In such an apparatus, a centrifugal projector is arranged on the side surface of the conveyance path, and the product that is the object to be processed is suspended and moved in a predetermined direction, and the product is inverted to surface-treat the entire product. The projection material is projected onto the product while rotating forward or tilting.

Special table 2010-533072 gazette

  However, when the product to be processed is large, it is difficult to perform desired reversal, normal rotation, and tilting in a suspended state, so that it is difficult to surface-treat the entire surface of the product.

  In view of the above fact, an object of the present invention is to obtain a shot processing apparatus capable of surface-treating the entire surface of a large object to be processed.

  According to a first aspect of the present invention, there is provided a shot processing apparatus according to the present invention, a hanging portion for suspending an object to be processed, a rectilinear movement mechanism for moving the hanging portion straight along a conveyance line of the object to be processed, and an impeller The projection material is projected toward the transport line side with the rotation, and the projection direction center line is obliquely forward in the transport direction in plan view, obliquely in the transport direction in plan view, and in plan view with respect to the transport line. And a plurality of centrifugal projectors installed so as to cross each other from the diagonally left side in the conveying direction, diagonally right side in the conveying direction in plan view, diagonally upward in the side view, and diagonally downward in the side view. “Slanting front side in the transport direction” and “diagonal rear side in the transport direction” refer to the relationship between the projection direction center line and the object to be processed on the transport line. (The same applies to the paragraphs below)

  According to the shot processing apparatus of the first aspect of the present invention, the hanging portion suspends the object to be processed, and the linear movement mechanism moves the hanging portion straight along the conveyance line of the object to be processed. And a centrifugal projector projects a projection material toward the conveyance line side with rotation of an impeller. Here, the centrifugal projector has a projection direction center line that is obliquely forward in the conveyance direction in plan view, obliquely in the conveyance direction in plan view, and obliquely left in the conveyance direction in plan view, with respect to the conveyance line of the object to be processed. Multiple installations cross each other from the diagonally right side of the conveyance direction in plan view, diagonally from the side (viewed from the side of the conveyance line), and diagonally from the side (viewed from the side of the conveyance line). Has been. For this reason, a plurality of centrifugal projectors are obliquely forward in the transport direction in plan view, obliquely in the transport direction in plan view, obliquely left in the transport direction in plan view, obliquely in the transport direction in plan view, in plan view, The projection material is projected from an obliquely upper side in a side view and from an obliquely lower side in a side view. Thus, the plurality of centrifugal projectors surface-treat the entire surface of the large object to be processed.

  According to a second aspect of the present invention, there is provided the shot processing apparatus according to the first aspect, wherein the centrifugal projector has a projection direction center line that is obliquely rearward in the conveyance direction in a plan view with respect to the conveyance line. The first projector installed so that it crosses obliquely from the left in the conveying direction and from the lower side in side view, and the center line of the projection direction is conveyed obliquely rearward in the conveying direction in plan view and in plan view with respect to the conveying line A second projector installed obliquely on the left side and obliquely from above in a side view, and a projection direction center line is obliquely rearward in the conveyance direction in plan view and obliquely in the conveyance direction in plan view with respect to the conveyance line; A third projector installed so as to cross obliquely from the lower side in a side view, and a projection direction center line obliquely rearward in the conveyance direction in a plan view with respect to the conveyance line and obliquely in the right direction in the conveyance direction in a plan view Crossed diagonally from above The fourth projector installed in such a manner that the center line of the projection direction intersects the transport line obliquely from the front in the transport direction in plan view, obliquely from the left in the transport direction in plan view, and obliquely from the lower side in the side view. And a sixth projector installed such that the center line in the projection direction intersects the transport line obliquely from the front in the transport direction in the plan view, diagonally from the left in the transport direction in the plan view, and from the diagonally upper side in the side view. A seventh projection device installed such that the center line in the projection direction intersects the transport line obliquely from the front side in the plan view and from the diagonally right side in the plan view and from the obliquely lower side in the side view; And an eighth projector installed such that the center line intersects the transport line obliquely from the front in the transport direction in plan view, obliquely from the right in the transport direction in plan view, and obliquely from the upper side in the side view.

  According to the shot processing apparatus of the present invention described in claim 2, the first projector is transported obliquely rearward in the transport direction in plan view with respect to the transport line of the object to be processed, and transported in plan view. It is installed so that it crosses diagonally from the left side in the direction and from the lower side in the side view. Projection material is projected from The second projector is installed such that the center line in the projection direction intersects with the conveyance line of the object to be processed from the diagonally rear side in the conveyance direction in plan view, from the diagonally left side in the conveyance direction in plan view, and from the diagonally upper side in side view. Therefore, the projection material is projected toward the object to be processed from the obliquely rear side in the conveyance direction in a plan view and from the obliquely upper side in the conveyance direction obliquely left side and in a side view in a plan view.

  The third projector is installed such that the center line in the projection direction intersects the conveyance line of the object to be processed obliquely from the rear side in the conveyance direction in plan view, obliquely from the right side in the conveyance direction in plan view, and obliquely from the lower side in side view. Therefore, the projection material is projected toward the object to be processed from the obliquely rear side in the conveyance direction in a plan view and from the obliquely lower side in the conveyance direction obliquely to the right side and in a side view. The fourth projector is installed such that the center line in the projection direction intersects the conveyance line of the object to be processed obliquely from the rear side in the conveyance direction in plan view, obliquely from the right in the conveyance direction in plan view, and obliquely from the upper side in side view. Therefore, the projection material is projected toward the object to be processed from the diagonally rear side in the conveyance direction in a plan view, from the diagonally right side in the conveyance direction in a plan view and from the diagonally upper side in a side view.

  The fifth projector is installed such that the center line in the projection direction intersects with the conveyance line of the object to be processed obliquely from the front side in the conveyance direction in the plan view, obliquely from the left side in the conveyance direction in the plan view, and obliquely from the lower side in the side view. Therefore, the projection material is projected toward the object to be processed from the oblique front side in the transport direction in a plan view and from the diagonally lower side in the transport direction obliquely to the left and in a side view in plan view. The sixth projector is installed such that the center line in the projection direction intersects the conveyance line of the object to be processed obliquely from the front in the conveyance direction in plan view, obliquely from the left in the conveyance direction in plan view, and obliquely from the upper side in side view. Therefore, the projection material is projected toward the object to be processed from the diagonally front side in the transport direction in a plan view and from the diagonally upper side in the transport direction diagonally left side and in a side view.

  The seventh projector is installed such that the center line in the projection direction intersects with the conveyance line of the object to be processed obliquely from the front in the conveyance direction in plan view, obliquely from the right in the conveyance direction in plan view, and obliquely from the bottom in side view. Therefore, the projection material is projected toward the object to be processed from the diagonally front side in the conveyance direction in a plan view and from the diagonally lower side in the conveyance direction diagonally to the right side and in a side view. The eighth projector is installed such that the center line in the projection direction intersects the conveyance line of the object to be processed obliquely from the front in the conveyance direction in the plan view, obliquely from the right in the conveyance direction in the plan view, and obliquely from the upper side in the side view. Therefore, the projection material is projected toward the object to be processed from the diagonally front side in the transport direction in a plan view, from the diagonally right side in the transport direction in a plan view and from the diagonally upper side in a side view.

  According to a third aspect of the present invention, there is provided the shot processing apparatus according to the first aspect, wherein, as the centrifugal projector, the center line in the projection direction is obliquely rearward and side in the conveying direction in plan view with respect to the conveying line. A first projector installed so as to cross obliquely from below and in a direction along the conveyance line in a plan view and overlapping the conveyance line, and the projection direction center line is oblique to the conveyance line in the conveyance direction in plan view A second projector installed so as to intersect from the diagonally left side in the conveyance direction in the rear side and in the plan view and from the diagonally upper side in the side view, and the projection direction center line obliquely in the conveyance direction in the plane direction with respect to the conveyance line A third projector installed so as to cross from the diagonally right side in the conveying direction and from the diagonally upper side in the side view, and the projection direction center line obliquely downward in the conveying direction in the lateral direction and in the lateral direction with respect to the conveying line From In addition, the fourth projector installed along the conveyance line in a plan view and overlapping with the conveyance line, and the projection direction center line is conveyed obliquely forward in the conveyance direction in a plan view with respect to the conveyance line and in a plan view. A fifth projector installed so as to cross diagonally from the left side and from the upper side in a side view, and a projection direction center line obliquely forward from the transport direction in a plan view with respect to the transport line and a diagonally right side and a side in a transport direction in plan view And a sixth projector installed so as to intersect obliquely from above.

  According to the shot processing apparatus of the present invention described in claim 3, the first projector has a projection direction center line that is obliquely rearward in the conveying direction in plan view and obliquely viewed in side view with respect to the conveying line of the object to be processed. Since it is installed along the transfer line of the object to be processed in a plan view so as to cross from the lower side and overlap the transfer line, the transfer direction is obliquely rearward and side view toward the object to be processed in a plan view Project the projectile from diagonally below. The second projector is installed such that the center line in the projection direction intersects with the conveyance line of the object to be processed from the diagonally rear side in the conveyance direction in plan view, from the diagonally left side in the conveyance direction in plan view, and from the diagonally upper side in side view. Therefore, the projection material is projected toward the object to be processed from the obliquely rear side in the conveyance direction in a plan view and from the obliquely upper side in the conveyance direction obliquely left side and in a side view in a plan view. The third projector is installed such that the center line in the projection direction intersects the conveyance line of the object to be processed obliquely from the rear in the conveyance direction in plan view, obliquely from the right in the conveyance direction in plan view, and obliquely from the upper side in side view. Therefore, the projection material is projected toward the object to be processed from the diagonally rear side in the conveyance direction in a plan view, from the diagonally right side in the conveyance direction in a plan view and from the diagonally upper side in a side view.

  The fourth projector is configured such that the center line of the projection direction intersects with the conveyance line of the object to be processed from the obliquely front side of the conveyance direction in a side view and from the obliquely lower side in a side view, and the conveyance line of the object to be processed in a plan view. The projection material is projected toward the object to be treated from the obliquely lower side in the front side view and the side obliquely in the side view. The fifth projector is installed such that the center line in the projection direction intersects with the conveyance line of the object to be processed obliquely from the front in the conveyance direction in the plan view, obliquely from the left in the conveyance direction in the plan view, and obliquely from the upper side in the side view. Therefore, the projection material is projected toward the object to be processed from the diagonally front side in the transport direction in a plan view and from the diagonally upper side in the transport direction diagonally left side and in a side view. The sixth projector is installed such that the center line in the projection direction intersects with the conveyance line of the object to be processed obliquely from the front in the conveyance direction in plan view, obliquely from the right in the conveyance direction in plan view, and obliquely from the upper side in side view. Therefore, the projection material is projected toward the object to be processed from the diagonally front side in the transport direction in a plan view, from the diagonally right side in the transport direction in a plan view and from the diagonally upper side in a side view.

  According to a fourth aspect of the present invention, there is provided the shot processing apparatus according to the first aspect, wherein, as the centrifugal projector, the center line in the projection direction is horizontal and obliquely in the conveyance direction in plan view with respect to the conveyance line. The first projector is installed so as to cross from the left side and in the conveyance direction obliquely in plan view, and the projection direction center line is horizontal and the conveyance direction is obliquely rearward and planar in the plan view with respect to the conveyance line. The second projector installed so as to intersect diagonally from the right side, and the projection direction center line intersect with the conveyance line obliquely from the rear side in the conveyance direction in plan view and obliquely from the left side in the conveyance direction and from the diagonally upper side in side view. And the third projector installed in such a manner that the center line in the projection direction intersects the transport line obliquely from the rear in the transport direction in plan view, obliquely from the right in the transport direction in plan view, and obliquely from the upper side in side view. First A projector and a fifth projector installed so that the center line in the projection direction intersects the transport line obliquely from the rear in the transport direction in plan view, obliquely from the left in the transport direction in plan view, and obliquely from the bottom in side view; A sixth projector installed such that the center line of the projection direction intersects the transport line obliquely rearward in the plan view with respect to the transport line, obliquely on the right side in the transport direction in plan view, and obliquely below in the side view; A seventh projector installed such that the center line intersects the transport line obliquely in front of the transport line in plan view, obliquely on the left side of transport direction in plan view, and obliquely below in side view; An eighth projector installed so as to intersect with the conveyance line obliquely in the conveyance direction in plan view, obliquely in the conveyance direction in plan view, and obliquely from the lower side in side view, and the projection direction center line with respect to the conveyance line In the plan view A ninth projector installed so as to cross from the front side and in the transport direction obliquely from the left side and from the obliquely upper side in the side view, and the projection direction center line obliquely forward and in the transport direction in plan view with respect to the transport line And the tenth projector installed so as to cross from the diagonally right side in the conveyance direction and from the diagonally upper side in side view, and the projection direction center line is horizontal and conveyed in the conveyance direction diagonally front side and in plan view with respect to the conveyance line The eleventh projector installed so as to cross from the left side of the direction, and the center line of the projection direction is horizontal and crosses the transport line obliquely from the front in the transport direction in plan view and from the right side of the transport direction in plan view And a twelfth projector installed.

  According to the shot processing apparatus of the present invention as set forth in claim 4, the first projector has a projection direction center line that is horizontal and is obliquely rearward and flat in the conveyance direction in plan view with respect to the conveyance line of the object to be processed. Since it is installed so as to cross from the diagonally left side in the conveyance direction as viewed, the projection material is projected toward the object to be processed horizontally from the diagonally rear side in the conveyance direction in plan view and from the diagonally left side in the conveyance direction in plan view. Since the second projector is installed so that the center line in the projection direction is horizontal and intersects from the diagonally right side in the conveyance direction in plan view and the diagonally right side of the conveyance direction in plan view with respect to the conveyance line of the object to be processed. A projection material is projected horizontally toward the object to be processed from the diagonally rear side in the transport direction in plan view and from the diagonally right side in the transport direction in plan view.

  The third projector is installed such that the center line in the projection direction intersects with the conveyance line of the object to be processed from the diagonally rear side in the conveyance direction in plan view, diagonally from the left in the conveyance direction in plan view, and from the diagonally upper side in side view. Therefore, the projection material is projected toward the object to be processed from the obliquely rear side in the conveyance direction in a plan view and from the obliquely upper side in the conveyance direction obliquely left side and in a side view in a plan view. The fourth projector is installed such that the center line in the projection direction intersects the conveyance line of the object to be processed obliquely from the rear side in the conveyance direction in plan view, obliquely from the right in the conveyance direction in plan view, and obliquely from the upper side in side view. Therefore, the projection material is projected toward the object to be processed from the diagonally rear side in the conveyance direction in a plan view, from the diagonally right side in the conveyance direction in a plan view and from the diagonally upper side in a side view.

  The fifth projector is installed such that the center line in the projection direction intersects with the conveyance line of the object to be processed obliquely from the rear side in the conveyance direction in plan view, obliquely from the left in the conveyance direction in plan view, and obliquely from the lower side in side view. Therefore, the projection material is projected toward the object to be processed from the obliquely rear side in the transport direction in a plan view and from the obliquely lower side in the transport direction obliquely to the left and in a side view in a plan view. The sixth projector is installed such that the center line in the projection direction intersects the conveyance line of the object to be processed obliquely from the rear side in the conveyance direction in plan view, obliquely from the right side in the conveyance direction in plan view, and obliquely from the lower side in side view. Therefore, the projection material is projected toward the object to be processed from the obliquely rear side in the conveyance direction in a plan view and from the obliquely lower side in the conveyance direction obliquely to the right side and in a side view.

  The seventh projector is installed such that the center line in the projection direction intersects the conveyance line of the object to be processed obliquely from the front in the conveyance direction in the plan view, obliquely from the left in the conveyance direction in the plan view, and obliquely from the lower side in the side view. Therefore, the projection material is projected toward the object to be processed from the oblique front side in the transport direction in a plan view and from the diagonally lower side in the transport direction obliquely to the left and in a side view in plan view. The eighth projector is installed such that the center line in the projection direction intersects with the conveyance line of the object to be processed obliquely from the front in the conveyance direction in the plan view, obliquely from the right in the conveyance direction in the plan view, and obliquely from the bottom in the side view. Therefore, the projection material is projected toward the object to be processed from the diagonally front side in the conveyance direction in a plan view and from the diagonally lower side in the conveyance direction diagonally to the right side and in a side view.

  The ninth projector is installed such that the center line in the projection direction intersects the conveyance line of the object to be processed obliquely from the front in the conveyance direction in plan view, obliquely from the left in the conveyance direction in plan view, and obliquely from the upper side in side view. Therefore, the projection material is projected toward the object to be processed from the diagonally front side in the transport direction in a plan view and from the diagonally upper side in the transport direction diagonally left side and in a side view. The tenth projector is installed such that the center line in the projection direction intersects the conveyance line of the object to be processed from the diagonally front side in the conveyance direction in plan view, from the diagonally right side in the conveyance direction in plan view, and from the diagonally upper side in side view. Therefore, the projection material is projected toward the object to be processed from the diagonally front side in the transport direction in a plan view, from the diagonally right side in the transport direction in a plan view and from the diagonally upper side in a side view.

  The eleventh projector is installed so that the center line in the projection direction is horizontal and intersects from the diagonally left side in the transport direction in plan view and the diagonally left side in plan view with respect to the transport line of the object to be processed. A projection material is projected horizontally toward the object to be processed from the front side in the transport direction obliquely in plan view and from the left side in the transport direction obliquely in plan view. Since the twelfth projector is installed so that the center line in the projection direction is horizontal and intersects from the oblique front side in the transport direction in the plan view and the oblique right side in the transport direction in the plan view with respect to the transport line of the object to be processed. A projection material is projected horizontally toward the object to be processed from the oblique front side in the transport direction in plan view and from the diagonally right side in the transport direction in plan view.

  A shot processing apparatus according to a fifth aspect of the present invention is the shot processing apparatus according to any one of the first to fourth aspects, wherein the projection material is projected by each of the plurality of centrifugal projectors in the transport line. A plurality of projection zones to be set along the conveyance line, an upstream side detection unit that is provided on the upstream side in the conveyance direction with respect to the plurality of projection zones, and detects the passage of the object to be processed; A downstream detection unit that is provided on the downstream side in the transport direction with respect to the projection zone and detects the passage of the object to be processed, and is used for supplying a projection material to the centrifugal projector, and is used for the centrifugal projector. On the other hand, based on the projection material supply unit capable of supplying and stopping the supply of the projection material, the detection result by the upstream detection unit, and the detection result by the downstream detection unit, the object to be processed is one of the projection zones. of And a control unit for controlling the projection material supply unit to project projection material to the projection zone only if it is determined that the 囲内.

  According to the shot processing apparatus of the present invention as set forth in claim 5, a plurality of projection zones are set along the transport line, on which the projection material is projected by each of the plurality of centrifugal projectors in the transport line of the object to be processed. Has been. Note that the projection zones may overlap each other or may be separated from each other. An upstream detection unit is provided on the upstream side in the conveyance direction for each of the plurality of projection zones, and a downstream detection unit is provided on the downstream side in the conveyance direction for each of the plurality of projection zones. The downstream detection unit detects the passage of the object to be processed. Moreover, the projection material supply part used for the supply of the projection material to the centrifugal projector can supply and stop supplying the projection material to the centrifugal projector. Then, the control unit enters the projection zone only when it is determined that the object to be processed is within one of the projection zones based on the detection result by the upstream detection unit and the detection result by the downstream detection unit. The projection material supply unit is controlled to project the projection material. Therefore, useless projection by the centrifugal projector can be suppressed.

  A shot processing apparatus according to a sixth aspect of the present invention is the shot processing apparatus according to any one of the first to fifth aspects, wherein a first processing chamber in which a projection material is projected by the centrifugal projector, A second processing chamber provided downstream of the first processing chamber in the conveyance direction of the object to be processed and provided with an injection nozzle for injecting a projection material together with compressed air.

  According to the shot processing apparatus of the present invention described in claim 6, in the first processing chamber, the surface of the object to be processed is processed by projecting the projection material by the centrifugal projector. The object to be processed that has been surface-treated in the first processing chamber is transferred to a second processing chamber that is provided downstream of the first processing chamber in the transfer direction of the object to be processed. An injection nozzle that injects the projection material together with the compressed air is installed in the second processing chamber. Therefore, if the projection material is jetted together with the compressed air from the jet nozzle toward the target object, the surface of the target object is further processed.

  According to a seventh aspect of the present invention, there is provided the shot processing apparatus according to the sixth aspect, wherein the openable and closable partition door is configured to block the flow path between the first processing chamber and the second processing chamber in the closed state. Is provided.

  According to the shot processing apparatus of the present invention described in claim 7, the openable and closable partition door blocks the flow path between the first processing chamber and the second processing chamber in the closed state. Therefore, it is possible to simultaneously treat the surface of the object to be processed in the first processing chamber and the second processing chamber by closing the partition door.

  As described above, the shot processing apparatus according to the present invention has an excellent effect that the entire surface of a large object to be processed can be surface-treated.

1 is a front view showing a shot blasting apparatus according to a first embodiment of the present invention. FIG. 2 is a view taken along line 2-2 in FIG. 1. FIG. 3 is a view taken along line 3-3 in FIG. 1. 1 is a plan view showing a shot blasting apparatus according to a first embodiment of the present invention. It is a figure which shows the drive part of the exit door of the shot blasting apparatus which concerns on the 1st Embodiment of this invention. FIG. 5A is a front view, and FIG. 5B is a side view. It is an enlarged plan view which shows the inside of the 2nd blast chamber in the shot blasting apparatus which concerns on the 1st Embodiment of this invention. It is a typical top view for demonstrating the projection by the centrifugal projector in the shot blasting apparatus which concerns on the 1st Embodiment of this invention. It is a figure which shows arrangement | positioning of the centrifugal projector seen in the conveyance direction of the to-be-processed target object in the shot blasting apparatus which concerns on the 2nd Embodiment of this invention. It is a 9-9 line arrow directional view of FIG. It is a figure which shows arrangement | positioning of the centrifugal projector seen from the conveyance direction of the to-be-processed target object in the shot blasting apparatus which concerns on the 3rd Embodiment of this invention. It is a 11-11 line arrow directional view of FIG.

[First Embodiment]
A shot blasting apparatus as a shot processing apparatus according to a first embodiment of the present invention will be described with reference to FIGS. In these drawings, an arrow FR appropriately shown indicates the front side of the apparatus when viewed from the front, an arrow UP indicates the upper side of the apparatus, and an arrow LH indicates the left side of the apparatus when viewed from the front. An arrow X indicates the conveyance direction of the workpiece W.

  FIG. 1 is a front view showing a shot blasting apparatus 10 as a shot processing apparatus. In FIG. 1, the direction from the left side to the right side in the drawing is the conveyance direction X of the workpiece W. 2 shows a side view taken along line 2-2 in FIG. 1, and FIG. 3 shows a side view taken along line 3-3 in FIG. 4 shows the shot blasting apparatus 10 in a plan view. However, the dust collector is omitted in FIG.

(Summary of shot blasting equipment)
First, an outline of the shot blasting apparatus 10 will be described. In addition, in the shot blasting apparatus 10 of this embodiment, it is set as the crane hanging type shot blasting apparatus which can make a large-sized metal product the to-be-processed target object W. As shown in FIG. 1, the shot blasting apparatus 10 includes an inlet apron chamber 14, a first blast chamber 16 as a first processing chamber, and an outlet apron in order from the upstream side in the conveyance direction X of the workpiece W. A chamber 18 and a second blast chamber 22 as a second processing chamber are provided. An entrance door 12 is provided at the entrance to the entrance apron chamber 14 so as to be opened and closed. An intermediate door 20 as a partition door is provided between the outlet apron chamber 18 and the second blast chamber 22 so as to be opened and closed. The intermediate door 20 blocks the flow path between the first blast chamber 16 and the second blast chamber 22 in the closed state. An exit door 24 is provided at the carry-out port of the second blast chamber 22 so as to be opened and closed.

  In the first blast chamber 16, a projection material is projected by a centrifugal projector 42, which will be described in detail later. In other words, the first blast chamber 16 is a chamber that performs surface processing of the processing target object W by the projection of the projection material onto the processing target object W (in this embodiment, polishing treatment such as scale removal, shot blast processing). It is. The first blast chamber 16 is separated from the space above the apparatus by the ceiling 16A, and is conveyed by the first side wall 16B (see FIG. 2) on the apparatus rear side and the second side wall 16C on the apparatus front side. It is separated from the left and right external spaces with respect to the direction X. A space adjacent to the lower side of the first blast chamber 16 is an internal space of the hopper portion 17.

  On the other hand, in the second blast chamber 22, the surface treatment of the object to be processed W is performed by jetting the projection material together with the compressed air to the object to be processed W (in this embodiment, a polishing process and a shot blasting process). ). The second blast chamber 22 is separated from the space above the apparatus by the ceiling 22A, and is conveyed by the first side wall 22B (see FIG. 4) on the apparatus rear side and the second side wall 22C on the apparatus front side. It is separated from the left and right spaces with respect to the direction X. The floor surface of the second blast chamber 22 is constituted by a bottom wall portion 22D.

  A hopper 26A for collecting the projection material is provided below the inlet apron chamber 14, and a first belt conveyor 26C for collecting the projection material is provided below the hopper 26A. The first belt conveyor 26C is disposed horizontally and has a direction from the left side in the drawing to the right side in the drawing as a conveying direction, and extends to the lower side downstream of the first blast chamber 16 in the conveying direction beyond the range directly below the hopper 26A. ing.

  A hopper 28 </ b> A is provided below the outlet apron chamber 18, and a hopper 28 </ b> B is also provided below the second blast chamber 22. Both hoppers 28A and 28B are for collecting projection material. A second belt conveyor 28C for collecting the projection material is provided below the hoppers 28A and 28B. The second belt conveyor 28C is disposed horizontally and is disposed in a range including a range immediately below the hopper 28A and a range immediately below the hopper 28B, with the direction from the right side in the drawing toward the left side in the drawing being the conveyance direction. The most downstream side of the conveyor 28 </ b> C extends to the lower side on the downstream side in the transport direction of the first blast chamber 16.

  On the lower side of the first blast chamber 16, a second hopper 30 </ b> A is provided on the lower side of the hopper portion 17. The upper end of the second hopper 30A is disposed adjacent to the most downstream side (right side in the figure) of the first belt conveyor 26C, and is disposed adjacent to the most downstream side (left side in the figure) of the second belt conveyor 28C. A screw conveyor 30B is disposed below the second hopper 30A. The screw conveyor 30B is arranged horizontally and has a longitudinal direction in the apparatus front-rear direction (direction perpendicular to the paper surface of FIG. 1), and conveys the projection material in a predetermined direction along the longitudinal direction. .

  On the downstream side in the conveying direction of the screw conveyor 30B, a lower end side of the bucket elevator 32 extending in the vertical direction of the apparatus is disposed. The bucket elevator 32 is configured to transport the projection material transported from the screw conveyor 30 </ b> B upward. A separator 34 is provided at a position adjacent to the upper outlet of the bucket elevator 32. The separator 34 receives the projection material discharged from the upper outlet of the bucket elevator 32 and classifies it into a usable projection material and an unusable projection material.

  A screw conveyor 36 is disposed at a position adjacent to the lower side of the separator 34. The screw conveyor 36 leads to a discharge unit that discharges the projection material that can be used in the separator 34. The screw conveyor 36 is horizontally arranged so that the longitudinal direction of the apparatus (direction perpendicular to the paper surface of FIG. 1) is the longitudinal direction, and the projection material is conveyed toward the apparatus back side along the longitudinal direction. It has become.

  As shown in FIG. 2, the upper end portion of the overflow pipe 44 is connected to the downstream side in the conveying direction of the screw conveyor 36 (the left side in FIG. 2). The lower end of the overflow pipe 44 is connected to the projection material tank 46. As a result, surplus projection material passes from the screw conveyor 36 through the overflow pipe 44 and is stored in the projection material tank 46.

  On the other hand, as shown in FIG. 1, a plurality of introduction pipes 38 are connected to the lower side of the screw conveyor 36 through tanks. As a result, the projection material is supplied to the upper end opening of the introduction pipe 38. The lower end portion of the introduction pipe 38 is connected to a centrifugal projector 42 via a flow rate adjusting device 40 as a projection material supply unit. In the present embodiment, a total of twelve centrifugal projectors 42 are installed, and these are shown by reference numerals 42A, 42B, 42C, 42D, 42E, 42F, 42G, 42H, 42I, 42J, Although indicated by 42K and 42L, in the following, when the centrifugal projector is described without distinguishing between them, the description will be made using the reference numeral 42 from which these tails are removed.

  The introduction pipe 38 is a pipe for supplying a projection material to the centrifugal projector 42. The flow rate adjusting device 40 is used for supplying the projection material to the centrifugal projector 42, and since it has a publicly-known structure, a detailed description thereof is omitted, but an open / close gate (not shown) capable of opening and closing and adjusting the open / close amount is provided. ing. The flow rate adjusting device 40 is connected to a control unit 84 (illustrated in a block form in the drawing) (connected state is not shown), and the operation of the open / close gate (open / close and adjustment of the open / close amount) is controlled by the control unit 84. ing. That is, the flow rate adjusting device 40 can supply and stop the supply of the projection material to the centrifugal projector 42 by the operation of the open / close gate, and can control the flow rate of the projection material supplied to the centrifugal projector 42. It is adjustable.

  The centrifugal projector 42 includes a rotatable impeller (not shown), and can apply centrifugal force to the projection material (shot, in this embodiment, a steel ball as an example) by the rotation of the impeller. Yes. Then, the centrifugal projector 42 moves the projection material accelerated by centrifugal force along with the rotation of the impeller to the side of the first blast chamber 16 on the conveying line (the conveying path on which the workpiece W is conveyed). Projected towards. Further, the projection material projected by the centrifugal projector 42 spreads in a divergent shape (see the two-dot chain line in FIGS. 1 and 2) and hits the object to be processed W. The arrangement configuration of the plurality of centrifugal projectors 42 will be described in detail later.

  In each of the above-described inlet apron chamber 14, outlet apron chamber 18, and second blast chamber 22, suction ports 48 are formed on the apparatus front side and apparatus back side. The suction port 48 is connected to a dust collector 52 (see FIG. 2) via a duct 50. Thereby, dust in each chamber of the inlet side apron chamber 14, the outlet side apron chamber 18, and the second blast chamber 22 is recovered together with air to the dust collector 52 (see FIG. 2) via the suction port 48 and the duct 50. It has become.

  As shown in FIG. 2, the dust collector 52 is provided with a duct 62, and the end of the duct 62 is connected to the intake side of the fan 64. An exhaust duct 68 is connected to the exhaust side of the fan 64 via a muffler 66. In a state where the fan 64 is operated, dust (dust) collected by the dust collector 52 is filtered by the dust collector 52, and the filtered air (clean air, clean air) is the duct 62, the fan 64, the muffler 66, and the exhaust duct 68. It is designed to be exhausted after passing through.

  A hopper 54 is provided below the dust collector 52, and a screw conveyor 56 is horizontally disposed below the hopper 54 along the front-rear direction of the apparatus (left-right direction in FIG. 2). The screw conveyor 56 conveys dust from the front side of the apparatus toward the back side of the apparatus (from the right side to the left side in FIG. 2). A rotary valve 58 is provided on the downstream side of the screw conveyor 56 in the conveying direction, and a dust box 60 is installed below the rotary valve 58. As a result, the dust flowing into the hopper 54 is conveyed to the rotary valve 58 side by the screw conveyor 56 and discarded in the dust box 60.

  As shown in FIGS. 1 to 4, a rail 72 is arranged on the upper part of the shot blasting apparatus 10. The rail 72 is horizontally arranged with the apparatus left-right direction as the longitudinal direction (see FIGS. 1 and 4), and forms a guide path above the transfer line along the transfer line where the workpiece W is transferred. ing. As shown in FIGS. 1 and 3, the rail 72 is supported by a number of support members. As shown in FIG. 2, the rail 72 is formed with an I-shaped longitudinal cross-section perpendicular to the longitudinal direction.

  As shown in the partially enlarged view of FIG. 2, a traveling mechanism 74 is mounted on the rail 72 so as to be able to travel. One traveling mechanism 74 may be provided, or a plurality of traveling mechanisms 74 may be provided. The travel mechanism 74 includes a pair of left and right rollers 74 </ b> A disposed on both sides of the vertical wall portion of the rail 72. A roller 74A is rotatably attached to the tip of the rotation shaft of the motor 74M fixed to the frame 74B, and is movable on the rail 72. A motor 74M for driving the roller 74A is fixed to the frame 74B. Thereby, the traveling mechanism 74 can move straight along the longitudinal direction of the rail 72 (in other words, along the conveyance line of the object to be processed) by the operation of the motor 74M.

  A hoist (small hoisting device) 78 is attached to the traveling mechanism 74 in a suspended state. The hoist 78 includes a chain 78A, and a suspension member 80 for suspending the workpiece W is attached to the lower end of the chain 78A. A hook portion is provided at the lower end of the suspension member 80 for suspending the workpiece W to be processed. In the present embodiment, the hoist 78 and the suspension member 80 constitute a suspension lower portion 76 that suspends the workpiece W. Further, the rail 72 and the travel mechanism 74 constitute a rectilinear movement mechanism 70 that linearly moves the suspended portion 76 along the conveyance line of the object W to be processed.

  A position detection sensor 82 for position detection is provided at a predetermined position of the rail 72. The position detection sensor 82 can detect the passage of the processing object W at the front end in the transport direction and the rear end in the transport direction. A known sensor is applied to the position detection sensor 82. The position detection sensor 82 is connected to the control unit 84. The control unit 84 performs various controls based on the detection result of the position detection sensor 82.

  Specifically, first, the control unit 84 controls the entrance door 12, the intermediate door 20, and the exit door 24 shown in FIG. 4 to open and close sequentially in accordance with the conveyance of the workpiece W. Here, the opening / closing mechanism of the entrance door 12, the intermediate door 20, and the exit door 24 will be briefly described.

  As shown in FIG. 3, the exit door 24 is a double sliding door. On the upper side of the exit door 24, a pair of left and right rails 86 extending in the door width direction are provided. As shown in FIG. 5B, the exit door 24 is supported by being suspended from the rail 86 via a trolley 85. As shown in FIG. 3, door driving motors 88 are attached to the ceiling portion on the upper side of the closed exit door 24 on both sides in the drawing.

  As shown in FIG. 5B, a chain wheel 90 provided on the ceiling portion is connected to the motor 88, and the chain wheel 90 is rotationally driven by the operation of the motor 88. As shown in FIGS. 5A and 5B, the roller chain 92A meshes with the chain wheel 90. An attachment 92B is attached to the roller chain 92A, and the roller chain 92A attached to the upper end of the outlet door 24 converts the rotational force of the motor 88 and the chain wheel 90 into a linear motion of the outlet door 24 in the door width direction. Then, it is transmitted to the exit door 24 through the attachment 92B. That is, the outlet door 24 is opened and closed by forward and reverse rotation of the motor 88.

  The motor 88 is connected to the control unit 84 described above. Based on the detection result of the position detection sensor 82 shown in FIG. 2, the control unit 84 determines that the workpiece W is approaching the outlet door 24 and opens the motor 88 (see FIG. 5 (B)) is controlled, and the motor 88 (see FIG. 5 (B)) is controlled to close the outlet door 24 when it is determined that the workpiece W has passed between the outlet doors 24.

  As shown in FIG. 5B, when the exit door 24 is suspended and supported and fixed, the exit door is lifted by a lifting bolt 93A in order to suitably set the engagement for driving the door. After adjusting the height position of 24, the exit door 24 is fixed to the member 93B for suspension with the bolt 93C. Further, the entrance door 12 and the intermediate door 20 shown in FIG. 4 are also opened and closed by the same mechanism as the exit door 24.

  As shown in FIGS. 1 and 4, the second blast chamber 22 is provided downstream of the first blast chamber 16 in the transport direction of the workpiece W. The second blast chamber 22 is provided with an injection nozzle 94 (also referred to as an air blast nozzle) that injects a projection material together with compressed air. The injection nozzle 94 constitutes a part of a known air blast device, and is connected via a pipe to a pressurized tank (not shown) that stores the projection material and a compressor (not shown) that supplies compressed air. ing. In the second blast chamber 22, when there is a portion where the surface treatment finish is not good in the conveyed workpiece W, the worker P holds the spray nozzle 94 toward the portion of the workpiece W, By blasting the projection material from the ejection nozzle 94, the surface of the workpiece W is further blasted. In other words, the second blast chamber 22 can be grasped as a processing chamber for correcting and finishing the surface treatment.

  The second blast chamber 22 is provided with an entrance door 96 for an operator to enter and exit from the first side wall portion 22B on the back side of the apparatus and the second side wall portion 22C on the front side of the apparatus. As shown in FIG. 4, a plurality of illumination lamps 98 are arranged on the ceiling portion 22 </ b> A of the second blast chamber 22. The interior of the second blast chamber 22 is brightly illuminated by the illumination of the plurality of illumination lamps 98, and the working environment of the worker P is ensured satisfactorily. In addition, the worker P wears protective clothing for blasting work such as space suit, and fresh air is supplied into the protective clothing. This provides an environment where comfortable work can be performed.

  FIG. 6 is an enlarged plan sectional view showing the inside of the second blast chamber 22. A grating 100 is laid on the entire surface of the bottom wall portion 22D (floor surface) of the second blast chamber 22. By laying the grating 100, the deposition of the projection material is suppressed and the working environment is improved. In FIG. 6, in order to illustrate the lower configuration of the grating 100, the grating 100 is shown with a part thereof removed. A grating receiver 102 is disposed under the grating 100. The grating 100 is firmly held by arranging the grating receiver 102.

(Arrangement of centrifugal projector)
Next, the arrangement of the centrifugal projector 42 shown in FIG. FIG. 7 shows a schematic plan view for explaining the projection by the centrifugal projector 42. In FIG. 7, in order to make the drawing easier to see, the number in the circle of the centrifugal projector 42 schematically shown in FIG. 7 is the projector number (for example, 1 in the case of the first projector). Match.

  As shown in FIGS. 1 and 7, the centrifugal projector 42 in the shot blasting apparatus 10 of the present embodiment has a projection direction center line that is obliquely forward in the conveying direction in plan view, obliquely in the conveying direction in plan view, Oblique left side of the conveying direction in plan view, Diagonal right side of the conveying direction in plan view, Diagonally upper side (viewed from the side of the conveying line) and Diagonally down in side view (viewed from the side of the conveying line) There are multiple installations that cross each other. This will be specifically described below.

  On the upstream side in the transport direction X of the workpiece W in the first blast chamber 16, the first projection 42A is applied to the first side wall portion 16B on the rear side of the apparatus, and the second projection is applied to the second side wall portion 16C on the front side of the apparatus. The projector 42B is provided with a third projector 42C and a fourth projector 42D on the ceiling 16A on the upper side of the apparatus, and a fifth projector 42E and a sixth projector 42F on the hopper 17 on the lower side of the apparatus.

  In FIG. 1 of the apparatus front view, the first projector 42A is arranged at a position overlapping the second projector 42B in the apparatus front-rear direction (direction perpendicular to the paper surface of FIG. 1). The first projector 42A shown in FIG. 7 has a projection direction center line CL1 that is horizontal, and is 45 in the transport direction obliquely rearward with respect to the transport line of the object to be processed W from the obliquely left side in the transport direction in plan view. It is installed so that it intersects at around (35 ° -55 °). On the other hand, the second projector 42B has a projection direction center line CL2 that is horizontal and 45 ° from the diagonally right side in the conveyance direction in the plan view and the diagonally right side in the conveyance direction in the plan view with respect to the conveyance line of the workpiece W. It is installed so that it intersects at around (35 ° -55 °).

  The third projector 42C is disposed on the left side of the rail 72 when viewed in the conveyance direction of the workpiece W. In FIG. 1 of the apparatus front view, the fourth projector 42D and the apparatus front-rear direction (on the paper surface of FIG. 1). It is arranged at a position that overlaps (vertical direction). In the third projector 42C shown in FIG. 7, the projection direction center line CL3 is obliquely inclined with respect to the conveyance line of the workpiece W in the plan view in the conveyance direction obliquely rearward and in the conveyance direction obliquely on the left side and in the side view. It is installed so as to intersect at around 45 ° (35 ° to 55 °) from the upper side. The fourth projector 42D is arranged on the right side of the rail 72 when viewed in the conveyance direction of the object to be processed W, and the projection direction center line CL4 is oblique in the conveyance direction in plan view with respect to the conveyance line of the object to be processed W. It is installed so as to intersect at around 45 ° (35 ° to 55 °) from the diagonally right side in the rear side and in the plan view and obliquely from the upper side in the side view.

  As shown in FIG. 7, the fifth projector 42E is disposed on the left side of the rail 72 when viewed in the transport direction of the object to be processed W. In FIG. It is arranged at a position overlapping in the front-rear direction (direction perpendicular to the paper surface of FIG. 1). In the fifth projector 42E shown in FIG. 7, the projection direction center line CL5 is oblique with respect to the conveyance line of the object W to be processed obliquely in the conveyance direction obliquely rearward in the plan view and in the conveyance direction obliquely on the left side and in the side view. It is installed so as to intersect at around 45 ° (35 ° to 55 °) from the lower side. The sixth projector 42F is disposed on the right side of the rail 72 when viewed in the conveyance direction of the object to be processed W, and the projection direction center line CL6 is oblique in the conveyance direction in plan view with respect to the conveyance line of the object to be processed W. It is installed so as to intersect at around 45 ° (35 ° to 55 °) from the rear side and in the conveyance direction obliquely right side and in side view obliquely from the lower side.

  On the other hand, as shown in FIGS. 1 and 7, on the downstream side in the transport direction X of the workpiece W in the first blast chamber 16, the seventh projector 42 </ b> G and the eighth The projector 42H, the ninth projector 42I, the tenth projector 42J on the ceiling 16A on the upper side of the apparatus, the eleventh projector 42K on the first side wall 16B on the rear side of the apparatus, and the second side wall 16C on the front side of the apparatus A twelfth projector 42L is provided.

  As shown in FIG. 7, the seventh projector 42 </ b> G is disposed on the left side of the rail 72 when viewed in the transport direction of the object W to be processed. In FIG. 2, the seventh projector 42G is arranged at a position overlapping the fifth projector 42E in the left-right direction of the apparatus (direction perpendicular to the paper surface of FIG. 2). In addition, the seventh projector 42G is arranged at a position overlapping with the eighth projector 42H in the front-rear direction of the apparatus (direction perpendicular to the paper surface of FIG. 1) in FIG. In the seventh projector 42G shown in FIG. 7, the projection direction center line CL7 is obliquely downward with respect to the conveyance line of the workpiece W in the plan view obliquely forward in the transport direction and obliquely forward in the transport direction in plan view and left in the side view. It is installed so as to intersect at around 45 ° (35 ° to 55 °) from the side. The eighth projector 42H is arranged on the right side of the rail 72 when viewed in the transport direction of the workpiece W. In FIG. 2, the eighth projector 42 </ b> H is disposed at a position overlapping the sixth projector 42 </ b> F in the left-right direction of the apparatus (direction perpendicular to the paper surface of FIG. 2). In the eighth projector 42H shown in FIG. 7, the projection direction center line CL8 is obliquely downward with respect to the conveyance line of the workpiece W in the plan view obliquely forward in the conveyance direction and diagonally right in the conveyance direction in plan view and in the side view. It is installed so as to intersect at around 45 ° (35 ° to 55 °) from the side.

  The ninth projector 42I is arranged on the left side of the rail 72 when viewed in the conveyance direction of the workpiece W, and in FIG. 1 of the apparatus front view, the tenth projector 42J and the apparatus front-rear direction (on the paper surface of FIG. 1). It is arranged at a position that overlaps (vertical direction). In the ninth projector 42I shown in FIG. 7, the projection direction center line CL9 is obliquely frontward in the transport direction in plan view and obliquely left in the transport direction in plan view with respect to the transport line of the object W to be processed. It is installed so that it may cross at around 45 degrees (35 degrees-55 degrees). The tenth projector 42J is disposed on the right side of the rail 72 when viewed in the conveyance direction of the workpiece W. The tenth projector 42J has a projection direction center line CL10 of about 45 ° from the obliquely upper side in the conveyance direction obliquely front side and in the planar view in the conveyance direction obliquely and in the side view with respect to the conveyance line of the workpiece W ( 35 ° to 55 °).

  The eleventh projector 42K is arranged at a position overlapping the twelfth projector 42L in the front-rear direction of the apparatus (direction perpendicular to the paper surface of FIG. 1) in FIG. The eleventh projector 42K shown in FIG. 7 has a projection direction center line CL11 that is horizontal and is 45 to the front in the transport direction in the plan view and 45 degrees from the left in the transport direction in the plan view with respect to the transport line of the object W to be processed. It is installed so that it intersects at around (35 ° -55 °). In addition, the twelfth projector 42L has a projection direction center line CL12 that is horizontal and is about 45 ° from the front side in the transport direction obliquely with respect to the transport line of the object W to be processed and from the obliquely right side in the transport direction in plan view. 35 ° to 55 °).

  As described above, a total of twelve centrifugal projectors 42 are installed so as to be inclined with respect to the plane of the workpiece W so that the incident angle increases the cutting force.

  In the present embodiment, a plurality of projection zones (a total of six) are set along the conveyance line in which the projection material is projected by each of the plurality of centrifugal projectors 42 in the conveyance line of the workpiece W. Yes.

  The first projection zone is a zone in which the projection material is projected by the first projector 42A and the second projector 42B, and is set in a range including the projection direction center lines CL1 and CL2 on the transport line. The second projection zone is a zone in which the projection material is projected by the third projector 42C and the fourth projector 42D, and is set in a range including the projection direction center lines CL3 and CL4 on the transport line. The third projection zone is a zone in which the projection material is projected by the fifth projector 42E and the sixth projector 42F, and is set in a range including the projection direction center lines CL5 and CL6 on the transport line.

  The fourth projection zone is a zone in which the projection material is projected by the seventh projector 42G and the eighth projector 42H, and is set in a range including the projection direction center lines CL7 and CL8 on the transport line. The fifth projection zone is a zone in which the projection material is projected by the ninth projector 42I and the tenth projector 42J, and is set to a range including the projection direction center lines CL9 and CL10 on the transport line. The sixth projection zone is a zone in which the projection material is projected by the eleventh projector 42K and the twelfth projector 42L, and is set in a range including the projection direction center lines CL11 and CL12 on the transport line. .

  For the first projection zone, an upstream detection unit A1 is provided on the upstream side in the transport direction, and a downstream detection unit A2 is provided on the downstream side in the transport direction. For the second projection zone, an upstream detection unit B1 is provided on the upstream side in the transport direction, and a downstream detection unit B2 is provided on the downstream side in the transport direction. For the third projection zone, an upstream detection unit C1 is provided on the upstream side in the transport direction, and a downstream detection unit C2 is provided on the downstream side in the transport direction.

  For the fourth projection zone, an upstream detection unit D1 is provided on the upstream side in the conveyance direction, and a downstream detection unit D2 is provided on the downstream side in the conveyance direction. For the fifth projection zone, an upstream detection unit E1 is provided on the upstream side in the transport direction, and a downstream detection unit E2 is provided on the downstream side in the transport direction. For the sixth projection zone, an upstream detection unit F1 is provided on the upstream side in the transport direction, and a downstream detection unit F2 is provided on the downstream side in the transport direction.

  The upstream side detection units A1, B1, C1, D1, E1, and F1 and the downstream side detection units A2, B2, C2, D2, E2, and F2 are configured by the position detection sensor 82 (see FIG. 2) described above, and the control unit. 84 (the connection state is not shown), and the front end of the workpiece W in the transport direction and the rear end of the transport direction are detected. Based on the detection results by the upstream detection units A1, B1, C1, D1, E1, and F1 and the detection results by the downstream detection units A2, B2, C2, D2, E2, and F2, the control unit 84 Only when it is determined that W is in any range of the projection zone, the operation of the open / close gate in the flow rate adjusting device 40 (see FIG. 1) is controlled so that the projection material is projected onto the projection zone.

(Action / Effect)
Next, the operation and effect of the above embodiment will be described.

  As shown in FIG. 2, in the shot blasting apparatus 10 according to this embodiment, the hanging portion 76 suspends the workpiece W, and the linear movement mechanism 70 moves the hanging portion 76 to the conveyance line of the workpiece W. Move straight along. At this time, the object to be processed W is carried into the apparatus body of the shot blasting apparatus 10 by opening the inlet door 12 shown in FIG. 4, and then carried into the first blast chamber 16 through the inlet apron chamber 14. Is done. The entrance door 12 is closed after the workpiece W is loaded. The first blast chamber 16 is provided with a centrifugal projector 42, and the centrifugal projector 42 projects the projection material toward the conveyance line along with the rotation of the impeller, whereby the workpiece W to be processed is provided. Is shot blasted.

  Here, as schematically shown in FIG. 7, the centrifugal projector 42 has a projection direction center line that is horizontally and planarly viewed from the conveyance line obliquely front and planar with respect to the conveyance line of the workpiece W to be processed. Are arranged so as to cross from the diagonally rear side in the conveying direction, the diagonally left side in the conveying direction in plan view, the diagonally right side in the conveying direction in plan view, the diagonally upper side in side view, and the diagonally downward side in side view. For this reason, the plurality of centrifugal projectors 42 are directed toward the object W to be processed, and their projection direction center lines are horizontal, obliquely forward in the conveying direction in plan view, obliquely backward in the conveying direction in plan view, and oblique in the conveying direction in plan view. The projection material is projected from the left side, obliquely rightward in the conveying direction in plan view, obliquely upward in side view, and obliquely downward in side view. Therefore, in this embodiment, the plurality of centrifugal projectors 42 can surface-treat the entire surface of the large object to be processed W without turning, reversing, raising and lowering the large object to be processed W. . Hereinafter, the projection by the centrifugal projector 42 will be specifically described.

  First, when the workpiece W is carried into the first blast chamber 16, the projection of the projection material by the first projector 42A and the second projector 42B is started. The first projector 42A is installed such that the projection direction center line CL1 is horizontal and intersects with the conveyance line of the workpiece W from the diagonally rear side in the conveyance direction in plan view and from the diagonally left side in the conveyance direction in plan view. Therefore, the projection material is projected toward the object W to be processed horizontally from the diagonally rear side in the transport direction in plan view and from the left side in the transport direction in plan view. The second projector 42B is installed such that the projection direction center line CL2 is horizontal and intersects with the conveyance line of the object W to be processed from the diagonally rear side in the conveyance direction in plan view and from the diagonally right side in the conveyance direction in plan view. Therefore, the projection material is projected toward the object W to be processed horizontally from the diagonally rear side in the transport direction in plan view and from the diagonally right side in the transport direction in plan view.

  Further, an upstream side detection unit A1 is provided on the upstream side in the transport direction with respect to the first projection zone on which the projection material is projected by the first projector 42A and the second projector 42B. On the other hand, a downstream detection unit A2 is provided on the downstream side in the transport direction. The upstream side detection unit A1 and the downstream side detection unit A2 detect the passage of the workpiece W. And when the control part 84 judges that the to-be-processed target object W exists in the range of said 1st projection zone based on the detection result by upstream detection part A1, and the detection result by downstream detection part A2. Control is performed to open the open / close gate of the flow rate adjusting device 40 (see FIG. 1 and the like) connected to the first projector 42A and the second projector 42B so as to project the projection material onto the first projection zone. . Further, the control unit 84 determines that the workpiece W does not exist within the first projection zone based on the detection result by the upstream detection unit A1 and the detection result by the downstream detection unit A2. In such a case, control is performed so that the open / close gates of the flow rate adjusting devices 40 (see FIG. 1 and the like) connected to the first projector 42A and the second projector 42B are closed. Therefore, useless projection by the first projector 42A and the second projector 42B can be suppressed.

  After the projection of the projection material by the first projector 42A and the second projector 42B is started, the projection of the projection material by the third projector 42C and the fourth projector 42D is started. The third projector 42C has a projection direction center line CL3 that intersects the conveyance line of the object W to be processed from the diagonally rear side in the conveyance direction in plan view, from the diagonally left side in the conveyance direction in plan view, and from the diagonally upper side in side view. Since it is installed, the projection material is projected toward the object W to be processed from the obliquely rear side in the conveying direction in plan view and from the obliquely upper side in the conveying direction obliquely left side and side view in planar view. The fourth projector 42D has the projection direction center line CL4 intersecting the conveyance line of the object W to be processed from the diagonally rear side in the conveyance direction in plan view, the diagonally right side in the conveyance direction in planar view, and the diagonally upper side in side view. Since it is installed, the projection material is projected toward the object W to be processed from the obliquely upper side in the conveyance direction obliquely rearward and in the planar view obliquely rightward and sidewise in plan view.

  Further, an upstream side detection unit B1 is provided on the upstream side in the transport direction with respect to the second projection zone where the projection material is projected by the third projector 42C and the fourth projector 42D, and the second projection zone On the other hand, a downstream detection unit B2 is provided on the downstream side in the transport direction. The upstream side detection unit B1 and the downstream side detection unit B2 detect passage of the workpiece W. And when the control part 84 judges that the to-be-processed target object W exists in the range of said 2nd projection zone based on the detection result by upstream detection part B1, and the detection result by downstream detection part B2. Control is performed to open the open / close gate of the flow rate adjusting device 40 (see FIG. 1 and the like) connected to the third projector 42C and the fourth projector 42D so as to project the projection material onto the second projection zone. . Moreover, the control part 84 judged that the to-be-processed target object W does not exist in the range of said 2nd projection zone based on the detection result by upstream detection part B1, and the detection result by downstream detection part B2. In such a case, control is performed to close the open / close gate of the flow rate adjusting device 40 (see FIG. 1 and the like) connected to the third projector 42C and the fourth projector 42D, respectively. Therefore, useless projection by the third projector 42C and the fourth projector 42D can be suppressed.

  After the projection of the projection material by the third projector 42C and the fourth projector 42D is started, the projection of the projection material by the fifth projector 42E and the sixth projector 42F is started. In the fifth projector 42E, the projection direction center line CL5 intersects the conveyance line of the object W to be processed from the diagonally rear side in the conveyance direction in plan view, from the diagonally left side in the conveyance direction in plan view, and from the diagonally lower side in side view. Therefore, the projection material is projected toward the object to be processed W from the obliquely rear side in the conveying direction in a plan view and from the obliquely lower side in the conveying direction obliquely to the left and in a side view in a plan view. In the sixth projector 42F, the projection direction center line CL6 intersects the conveyance line of the object W to be processed from the diagonally rear side in the conveyance direction in plan view, from the diagonally right side in the conveyance direction in plan view, and from the diagonally lower side in side view. Therefore, the projection material is projected toward the object to be processed W from the obliquely rear side in the conveyance direction in a plan view and from the obliquely lower side in the conveyance direction obliquely to the right and in a side view in plan view.

  Further, an upstream side detection unit C1 is provided on the upstream side in the transport direction with respect to the third projection zone on which the projection material is projected by the fifth projector 42E and the sixth projector 42F, and the third projection zone On the other hand, a downstream side detection unit C2 is provided on the downstream side in the transport direction. The upstream side detection unit C1 and the downstream side detection unit C2 detect passage of the object to be processed W. And when the control part 84 judges that the to-be-processed target object W exists in the range of the said 3rd projection zone based on the detection result by the upstream detection part C1, and the detection result by the downstream detection part C2. Control is performed to open the open / close gate of the flow rate adjusting device 40 (see FIG. 1 and the like) connected to the fifth projector 42E and the sixth projector 42F so as to project the projection material onto the third projection zone. . Moreover, the control part 84 judged that the to-be-processed target object W does not exist in the range of the said 3rd projection zone based on the detection result by the upstream detection part C1, and the detection result by the downstream detection part C2. In such a case, control is performed so that the open / close gates of the flow rate adjusting devices 40 (see FIG. 1 and the like) connected to the fifth projector 42E and the sixth projector 42F are closed. Therefore, useless projection by the fifth projector 42E and the sixth projector 42F can be suppressed.

  After the projection of the projection material by the fifth projector 42E and the sixth projector 42F is started, the projection of the projection material by the seventh projector 42G and the eighth projector 42H is started. The seventh projector 42G has a projection direction center line CL7 intersecting with the conveyance line of the workpiece W from the diagonally front side in the conveyance direction in plan view, diagonally on the left in the conveyance direction in plan view, and diagonally below in the side view. Since it is installed, the projection material is projected toward the workpiece W from the diagonally front side in the transport direction in a plan view and from the diagonally lower side in the transport direction diagonally to the left and in a side view in plan view. The eighth projector 42H intersects the projection direction center line CL8 with respect to the conveyance line of the object W to be processed from the diagonally front side in the conveyance direction in plan view, from the diagonally right side in the conveyance direction in plan view, and from the diagonally lower side in side view. Since it is installed, the projection material is projected toward the object W to be processed from the oblique front side in the transport direction in a plan view and from the diagonally lower side in the transport direction obliquely right side and in a side view in plan view.

  Further, an upstream side detection unit D1 is provided on the upstream side in the transport direction with respect to the fourth projection zone on which the projection material is projected by the seventh projector 42G and the eighth projector 42H, and the fourth projection zone On the other hand, a downstream detection unit D2 is provided on the downstream side in the transport direction. The upstream side detection unit D1 and the downstream side detection unit D2 detect passage of the object to be processed W. And when the control part 84 judges that the to-be-processed target object W exists in the range of the said 4th projection zone based on the detection result by the upstream detection part D1, and the detection result by the downstream detection part D2. Control is performed to open the open / close gates of the flow rate adjusting devices 40 (see FIG. 1 and the like) connected to the seventh projector 42G and the eighth projector 42H so as to project the projection material onto the fourth projection zone. . Further, the control unit 84 determines that the workpiece W does not exist within the range of the fourth projection zone based on the detection result by the upstream detection unit D1 and the detection result by the downstream detection unit D2. In this case, control is performed so that the open / close gates of the flow rate adjusting devices 40 (see FIG. 1 and the like) connected to the seventh projector 42G and the eighth projector 42H are closed. Therefore, useless projection by the seventh projector 42G and the eighth projector 42H can be suppressed.

  After projection of the projection material by the seventh projector 42G and the eighth projector 42H is started, projection of the projection material by the ninth projector 42I and the tenth projector 42J is started. The ninth projector 42I is installed such that the projection direction center line CL9 intersects the conveyance line of the object W to be processed from the diagonally front side in the conveyance direction in plan view, from the diagonally left side in the conveyance direction in plan view, and from the diagonally upper side in side view. Therefore, the projection material is projected toward the workpiece W from the diagonally front side in the transport direction in plan view and from the diagonally upper side in the transport direction obliquely left side and side view in plan view. The tenth projector 42J is installed such that the projection direction center line CL10 intersects the conveyance line of the object W to be processed from the diagonally front side in the conveyance direction in plan view, from the diagonally right side in the conveyance direction in plan view, and from the diagonally upper side in side view. Therefore, the projection material is projected toward the object W to be processed from the oblique front side in the transport direction in a plan view and from the diagonally upper side in the transport direction obliquely right side and in a side view in plan view.

  An upstream detection unit E1 is provided on the upstream side in the transport direction with respect to the fifth projection zone on which the projection material is projected by the ninth projector 42I and the tenth projector 42J, and the fifth projection zone On the other hand, a downstream side detection unit E2 is provided on the downstream side in the transport direction. The upstream side detection unit E1 and the downstream side detection unit E2 detect passage of the workpiece W. And when the control part 84 judges that the to-be-processed target object W exists in the range of the said 5th projection zone based on the detection result by the upstream detection part E1, and the detection result by the downstream detection part E2. Control is performed to open the open / close gate of the flow rate adjusting device 40 (see FIG. 1 and the like) connected to the ninth projector 42I and the tenth projector 42J so as to project the projection material onto the fifth projection zone. . Further, the control unit 84 determines that the workpiece W does not exist within the fifth projection zone based on the detection result by the upstream detection unit E1 and the detection result by the downstream detection unit E2. In such a case, control is performed so that the open / close gates of the flow rate adjusting devices 40 (see FIG. 1 and the like) connected to the ninth projector 42I and the tenth projector 42J are closed. Therefore, useless projection by the ninth projector 42I and the tenth projector 42J can be suppressed.

  After the projection of the projection material by the ninth projector 42I and the tenth projector 42J is started, the projection of the projection material by the eleventh projector 42K and the twelfth projector 42L is started. The eleventh projector 42K is installed such that the projection direction center line CL11 is horizontal and intersects the conveyance line of the object W to be processed from the diagonally front side in the conveyance direction in plan view and from the diagonally left side in the conveyance direction in plan view. Therefore, the projection material is projected horizontally toward the object W to be processed from the front side in the transport direction obliquely in plan view and from the left side in the transport direction obliquely in plan view. The twelfth projector 42L is installed such that the projection direction center line CL12 is horizontal and intersects the conveyance line of the object W to be processed from the diagonally front side in the conveyance direction in plan view and from the diagonally right side in the conveyance direction in plan view. Therefore, the projection material is projected horizontally toward the object W to be processed from the diagonally front side in the transport direction in plan view and from the diagonally right side in the transport direction in plan view.

  An upstream detection unit F1 is provided on the upstream side in the transport direction with respect to the sixth projection zone on which the projection material is projected by the eleventh projector 42K and the twelfth projector 42L, and the sixth projection A downstream detection unit F2 is provided on the downstream side in the transport direction with respect to the zone. The upstream side detection unit F1 and the downstream side detection unit F2 detect passage of the workpiece W. And when the control part 84 judges that the to-be-processed target object W exists in the range of the said 6th projection zone based on the detection result by the upstream detection part F1, and the detection result by the downstream detection part F2. Open and close the open / close gates of the flow control devices 40 (see FIG. 1 and the like) respectively connected to the eleventh projector 42K and the twelfth projector 42L so as to project the projection material onto the sixth projection zone. Control. Further, the control unit 84 determines that the workpiece W does not exist within the range of the sixth projection zone based on the detection result by the upstream detection unit F1 and the detection result by the downstream detection unit F2. In this case, control is performed so that the open / close gates of the flow rate adjusting devices 40 (see FIG. 1 and the like) connected to the eleventh projector 42K and the twelfth projector 42L are closed. Therefore, useless projection by the eleventh projector 42K and the twelfth projector 42L can be suppressed.

  Moreover, in this embodiment, if the to-be-processed target object W surface-treated in the 1st blast chamber 16 shown by FIG. 4 is conveyed just before the intermediate door 20, the intermediate door 20 will open, and the to-be-processed target object W will be shown. Is conveyed to the second blast chamber 22. The second blast chamber 22 is provided with an injection nozzle 94 that injects a projection material together with compressed air. Therefore, if the projection material is jetted together with the compressed air from the jet nozzle 94 toward the workpiece W, the surface of the workpiece W is further processed.

  More specifically, in the second blast chamber 22, the workpiece W is lowered to the bottom wall portion 22D (see FIG. 6) with the intermediate door 20 and the outlet door 24 closed, and other than the ground contact surface. The shot blasting process is performed on the required finishing point (local part) of the part, and then the workpiece W is lifted, and the shot blasting process is performed on the required finishing point (local part) of the ground contact surface. The shot blasting process in the second blasting chamber 22 is performed by the operator P holding the injection nozzle 94 toward the finishing point of the workpiece W and injecting the projection material together with the compressed air from the injection nozzle 94. The The finishing process is performed in the second blast chamber 22 when, for example, the object to be processed W has holes, protrusions, or the like.

  Moreover, since the flow path between the 1st blast chamber 16 and the 2nd blast chamber 22 is interrupted | blocked when the intermediate door 20 is closed, when the intermediate door 20 is closed, the 1st blast chamber 16 and The surface treatment of the workpiece W can be performed simultaneously (in parallel) with the second blast chamber 22. That is, useless waiting time can be eliminated. Thereafter, after the exit door 24 is opened and the object to be processed is carried out of the second blast chamber 22, the exit door 24 is closed, whereby a series of shot blasting treatments are completed.

  As described above, according to the shot blasting apparatus 10 according to the present invention, the entire surface of the large workpiece W can be surface-treated.

  Here, a supplementary explanation will be given in comparison with a shot blasting device having a conventional structure. For example, it is a crane-suspended shot blasting apparatus in which a centrifugal projector is fixed to the side wall on the side of the transfer line and the object to be processed is projected while being swiveled, inverted, lifted, tilted, etc. In the apparatus according to the structure, there is a problem that it is difficult to surface-treat the entire surface of the object to be processed unless it is a skilled worker. That is, in the apparatus according to such a conventional structure, for example, the object to be processed is moved up and down by an elevating hoist while arbitrarily tilting the object to be processed by a reversing machine. Specifically, it is difficult to suspend the object to be processed and suspend it in consideration of stability at the time of reversal, etc.) and reverse position. As a result, it is difficult for a non-skilled worker to perform shot blasting on the entire surface of the object to be processed. In addition, when the entire surface of the object to be processed is shot blasted using such an apparatus according to the conventional structure, there is a problem that wasteful projections are extremely increased. On the other hand, in the present embodiment, the entire surface of the large workpiece W can be surface-treated while suppressing unnecessary projections even without operation by a skilled worker.

  Further, in the apparatus according to the conventional structure described above, since the chain sling for reversing the ceiling surface moves according to the reversal angle, a ceiling seal in the conveyance direction of the object to be processed and a ceiling seal in a direction perpendicular to the ceiling seal are necessary. Becomes complicated. On the other hand, in this embodiment, the problem of such a complicated sealing structure does not occur.

[Second Embodiment]
Next, a shot blasting apparatus 110 as a shot processing apparatus according to a second embodiment of the present invention will be described with reference to FIGS. 8 shows the arrangement of the centrifugal projectors 42 as viewed in the conveying direction of the object to be processed W, and FIG. 9 shows a view taken along line 9-9 in FIG. In the second embodiment, as the centrifugal projector 42, the first projector 42M, the second projector 42N, the third projector 42O, the fourth projector 42P, the fifth projector 42Q, and the sixth projector. The feature is that eight units of 42R, the seventh projector 42S, and the eighth projector 42T are installed, and other configurations are substantially the same as those of the first embodiment. Therefore, components that are substantially the same as those of the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 8, the ceiling portion 16 </ b> D that separates the indoor space and the space above the apparatus in the first blast chamber 16 is a portion orthogonal to the transport direction on the same plane as the transport line of the object W to be processed. Is set to be narrower than the width of the central portion orthogonal to the conveyance direction of the workpiece W.

  The centrifugal projector 42 in the shot blasting device 110 is obliquely forward in the conveying direction in plan view, obliquely rearward in the conveying direction in plan view, obliquely left in the conveying direction in plan view, obliquely right in the conveying direction in plan view, and in side view (conveyed) A plurality are installed so as to cross each other from the diagonally upper side (viewed from the side of the line) and from the diagonally lower side (viewed from the side of the conveyance line). This will be specifically described below.

  As shown in FIGS. 8 and 9, on the upstream side in the transport direction X of the workpiece W in the first blast chamber 16, the first projector 42 </ b> M and the third projector are placed in the hopper portion 17 on the lower side of the apparatus. 42O is provided, and a second projector 42N and a fourth projector 42P are provided on the ceiling 16D on the upper side of the apparatus.

  The first projector 42M on the lower side of the apparatus is arranged on the left side in the conveyance width direction when viewed in the conveyance direction of the workpiece W, and in FIG. 9 as viewed from the front of the apparatus, the third projector 42O and the apparatus front-rear direction (FIG. 9). In a direction perpendicular to the paper surface). In the first projector 42M shown in FIG. 8, the center line in the projection direction is obliquely downward with respect to the conveyance line of the object to be processed W in the conveyance direction obliquely rearward in the plan view and in the conveyance direction obliquely on the left side and in the side view. It is installed so as to intersect at around 45 ° (35 ° to 55 °) from the side.

  The second projector 42N on the upper side of the apparatus is arranged on the left side in the conveyance width direction when viewed in the conveyance direction of the workpiece W, and in FIG. 9 as viewed from the front of the apparatus, the fourth projector 42P and the apparatus front-rear direction (in FIG. 9). It is arranged at a position overlapping (in a direction perpendicular to the paper surface). The second projector 42N shown in FIG. 8 has a projection direction center line that is obliquely rearward in the conveying direction in plan view and obliquely left in the conveying direction in plan view and obliquely upward in side view with respect to the conveying line of the object W to be processed. It is installed so that it may cross at around 45 degrees (35 degrees-55 degrees).

  The third projector 42O on the lower side of the apparatus is arranged on the right side in the transport width direction when viewed in the transport direction of the workpiece W. The third projector 42O has a projection direction center line of about 45 ° from the obliquely lower side in the conveyance direction obliquely rearward and planarly in the plan view in the plan view with respect to the conveyance line of the workpiece W. It is installed so as to intersect at (35 ° to 55 °).

  The fourth projector 42P on the upper side of the apparatus is arranged on the right side in the transport width direction when viewed in the transport direction of the workpiece W. In the fourth projector 42P, the projection direction center line is about 45 ° from the obliquely upper side in the conveyance direction obliquely rearward and planarly in the plan view with respect to the conveyance line of the object W to be processed. 35 ° to 55 °).

  As shown in FIGS. 8 and 9, on the downstream side in the transport direction X of the workpiece W in the first blast chamber 16, the fifth projector 42 </ b> Q and the seventh projector are placed on the hopper portion 17 on the lower side of the apparatus. 42S is provided, and a sixth projector 42R and an eighth projector 42T are provided on the ceiling 16D on the upper side of the apparatus.

  The fifth projector 42Q on the lower side of the apparatus is arranged on the left side in the transport width direction when viewed in the transport direction of the workpiece W. The fifth projector 42Q is arranged in a position overlapping the first projector 42M in the left-right direction of the apparatus (direction perpendicular to the paper surface of FIG. 8) in FIG. 8 as viewed in the conveyance direction of the workpiece W. In FIG. 9, the seventh projector 42 </ b> S is arranged at a position overlapping with the apparatus front-rear direction (direction perpendicular to the paper surface of FIG. 9). In the fifth projector 42Q, the projection direction center line is about 45 ° from the obliquely lower side in the conveyance direction obliquely front side and the planar view obliquely left side and side view in plan view with respect to the conveyance line of the workpiece W to be processed ( 35 ° to 55 °).

  The sixth projector 42R on the upper side of the apparatus is arranged on the left side in the transport width direction when viewed in the transport direction of the workpiece W. The sixth projector 42R is arranged in a position overlapping the second projector 42N and the apparatus left-right direction (direction perpendicular to the paper surface of FIG. 8) in FIG. 8 as viewed in the conveyance direction of the object W to be processed. In FIG. 9, the eighth projector 42 </ b> T is disposed at a position overlapping with the apparatus front-rear direction (direction perpendicular to the paper surface of FIG. 9). In the sixth projector 42R, the projection direction center line is about 45 ° from the obliquely upper side in the conveyance direction obliquely front side in the plan view and in the conveyance direction obliquely left side and in the side view with respect to the conveyance line of the workpiece W (35 It is installed so that it may cross at (° -55 °).

  The seventh projector 42S on the lower side of the apparatus is disposed on the right side in the transport width direction when viewed in the transport direction of the workpiece W. The seventh projector 42S is arranged at a position overlapping with the third projector 42O in the left-right direction of the apparatus (direction perpendicular to the paper surface of FIG. 8) in FIG. 8 as viewed in the conveyance direction of the workpiece W. In the seventh projector 42S, the center line in the projection direction is about 45 ° from the obliquely lower side in the conveyance direction obliquely front side and the planar view obliquely right side and side view in plan view with respect to the conveyance line of the workpiece W to be processed ( 35 ° to 55 °).

  The eighth projector 42T on the upper side of the apparatus is disposed on the right side in the transport width direction when viewed in the transport direction of the workpiece W. The eighth projector 42T is arranged at a position overlapping the fourth projector 42P in the left-right direction of the apparatus (direction perpendicular to the paper surface of FIG. 8) in FIG. 8 as viewed in the conveyance direction of the workpiece W. The eighth projector 42T has a projection direction center line of about 45 ° from the obliquely upper side in the conveyance direction obliquely front side in the plan view and in the conveyance direction obliquely right side and in the side view with respect to the conveyance line of the workpiece W (35 It is installed so that it may cross at (° -55 °).

  A plurality of projection zones along which the projection material is projected by each of the plurality of centrifugal projectors 42 in the transport line of the workpiece W (a total of two on the upstream side and the downstream side as an example in the present embodiment). Set). Similarly to the first embodiment, upstream detection units (not shown) are provided on the upstream side in the transport direction with respect to the plurality of projection zones, and downstream in the transport direction with respect to the plurality of projection zones. On the side, a downstream side detection unit (not shown) is provided. The upstream detection unit and the downstream detection unit detect passage of the object to be processed W. Similarly to the first embodiment, the control unit 84 determines whether the object to be processed W is in any one of the projection zones based on the detection result by the upstream detection unit and the detection result by the downstream detection unit. The operation of the open / close gate of the flow rate adjusting device 40 is controlled so that the projection material is projected onto the projection zone only when it is determined that it is within the projection zone.

(Action / Effect)
Next, the operation and effect of the above embodiment will be described.

  The first projector 42M has a projection direction center line that intersects the conveyance line of the object W to be processed from the diagonally rear side in the conveyance direction in plan view, from the diagonally left side in the conveyance direction in plan view, and from the diagonally lower side in side view. Since it is installed, the projection material is projected toward the workpiece W from the obliquely rear side in the conveying direction in a plan view and from the obliquely lower side in the conveying direction obliquely to the left and in a side view in a plan view. The second projector 42N is installed such that the center line in the projection direction intersects with the conveyance line of the object W to be processed from the diagonally rear side in the conveyance direction in plan view, diagonally left in the conveyance direction in plan view, and obliquely from the upper side in side view. Therefore, the projection material is projected toward the object W to be processed from the obliquely rear side in the conveying direction in plan view and from the obliquely upper side in the conveying direction obliquely left side and side view in plan view.

  The third projector 42O crosses the center line in the projection direction with respect to the conveyance line of the object W to be processed from the diagonally rear side in the conveyance direction in plan view, from the diagonally right side in the conveyance direction in plan view, and from the diagonally lower side in side view. Since it is installed, the projection material is projected toward the object W to be processed from the obliquely rear side in the conveying direction in plan view and from the obliquely lower side in the conveying direction obliquely right side and side view in plan view. The fourth projector 42P is installed such that the center line in the projection direction intersects the conveyance line of the workpiece W to be processed obliquely from the rear in the conveyance direction in plan view, obliquely from the right in the conveyance direction in plan view, and obliquely from the upper side in side view. Therefore, the projection material is projected toward the object W to be processed from the obliquely rear side in the conveyance direction in a plan view and from the obliquely upper side in the conveyance direction obliquely right side and in a side view in plan view.

  The fifth projector 42Q is installed such that the projection direction center line intersects the conveyance line of the workpiece W to be processed obliquely from the front in the conveyance direction, obliquely from the left in the conveyance direction in plan view, and obliquely from the lower side in the side view. Therefore, the projection material is projected toward the object W to be processed from the diagonally front side in the transport direction in a plan view and from the diagonally lower side in the transport direction diagonally to the left and in a side view in plan view. The sixth projector 42R is installed such that the center line in the projection direction intersects the conveyance line of the object W to be processed from the diagonally front side in the conveyance direction in plan view, from the diagonally left side in the conveyance direction in plan view, and from the diagonally upper side in side view. Therefore, the projection material is projected toward the workpiece W from the diagonally front side in the transport direction in a plan view and from the diagonally upper side in the transport direction diagonally to the left and in a side view in plan view.

  The seventh projector 42S is installed such that the center line in the projection direction intersects the conveyance line of the object W to be processed obliquely from the front in the conveyance direction in the plan view, obliquely from the right in the conveyance direction in the plan view, and obliquely from the lower side in the side view. Therefore, the projection material is projected toward the workpiece W from the diagonally front side in the transport direction in plan view and from the diagonally lower side in the transport direction diagonally right side and side view in plan view. The eighth projector 42T is installed such that the center line in the projection direction intersects the conveyance line of the object W to be processed from the diagonally front side in the conveyance direction in plan view, from the diagonally right side in the conveyance direction in plan view, and from the diagonally upper side in side view. Therefore, the projection material is projected toward the workpiece W from the diagonally front side in the transport direction in a plan view, from the diagonally right side in the transport direction in a plan view and from the diagonally upper side in a side view.

  As described above, according to the shot blasting apparatus 110 according to the present embodiment, the entire surface of the large workpiece W can be surface-treated.

[Third Embodiment]
Next, a shot blasting apparatus 120 as a shot processing apparatus according to a third embodiment of the present invention will be described with reference to FIGS. 10 shows the arrangement of the centrifugal projectors 42 as viewed in the conveying direction of the object to be processed W, and FIG. 11 shows a view taken along line 11-11 in FIG. In the third embodiment, the centrifugal projector 42 includes a first projector 42U, a second projector 42V, a third projector 42W, a fourth projector 42X, a fifth projector 42Y, and a sixth projector. The feature is that six 42Z units are installed, and other configurations are substantially the same as those in the first and second embodiments. Therefore, components substantially the same as those in the first and second embodiments are denoted by the same reference numerals and description thereof is omitted.

  The centrifugal projector 42 in the shot blast device 120 is obliquely forward in the conveying direction in plan view, obliquely rearward in the conveying direction in plan view, obliquely left in the conveying direction in plan view, obliquely right in the conveying direction in plan view, A plurality are installed so as to cross each other from the diagonally upper side (viewed from the side of the line) and from the diagonally lower side (viewed from the side of the conveyance line). This will be specifically described below.

  As shown in FIGS. 10 and 11, a first projector 42U is provided on the hopper 17 on the lower side of the apparatus on the upstream side in the transport direction X of the workpiece W in the first blast chamber 16, A second projector 42V and a third projector 42W are provided on the ceiling 16D on the upper side of the apparatus.

  The first projector 42U on the lower side of the apparatus has a center line in the projection direction of about 45 ° from the obliquely lower side in the conveyance direction obliquely rear side and in the side view with respect to the conveyance line of the workpiece W (from 35 ° to 35 °). 55) so as to intersect with each other and along the conveyance line of the workpiece W in plan view and in a direction overlapping the conveyance line.

  The second projector 42V on the upper side of the apparatus is arranged on the left side in the transport width direction when viewed in the transport direction of the object to be processed W. In FIG. It is arranged at a position overlapping (in a direction perpendicular to the paper surface). In the second projector 42V shown in FIG. 10, the center line in the projection direction is obliquely rearward in the conveyance direction in plan view and obliquely in the left in the conveyance direction in plan view and obliquely upward in the side view with respect to the conveyance line of the object W to be processed. It is installed so that it may cross at around 45 degrees (35 degrees-55 degrees).

  The third projector 42 </ b> W on the upper side of the apparatus is arranged on the right side in the transport width direction when viewed in the transport direction of the object to be processed W. The third projector 42W has a projection direction center line of about 45 ° from the obliquely upper side in the conveyance direction obliquely rearward and planarly in the plan view with respect to the conveyance line of the object W to be processed. 35 ° to 55 °).

  As shown in FIGS. 10 and 11, a fourth projector 42 </ b> X is provided in the hopper 17 on the lower side of the apparatus on the downstream side in the transport direction X of the workpiece W in the first blast chamber 16, A fifth projector 42Y and a sixth projector 42Z are provided on the ceiling 16D on the upper side of the apparatus.

  The fourth projector 42X on the lower side of the apparatus is arranged at a position overlapping with the first projector 42U in the left-right direction of the apparatus (direction perpendicular to the paper surface of FIG. 10) in FIG. Has been. In the fourth projector 42X shown in FIG. 11, the projection direction center line is approximately 45 ° (35 ° to approximately 35 ° from the obliquely forward side in the conveyance direction in the side view and the obliquely lower side in the side view with respect to the conveyance line of the object W to be processed. 55) so as to intersect with each other and along the conveyance line of the workpiece W in plan view and in a direction overlapping the conveyance line.

  As shown in FIGS. 10 and 11, the fifth projector 42 </ b> Y on the upper side of the apparatus is disposed on the left side in the transport width direction when viewed in the transport direction of the object to be processed W, and is viewed in the transport direction of the object to be processed W. 10, the second projector 42V is disposed at a position overlapping the left-right direction of the apparatus (direction perpendicular to the paper surface of FIG. 10), and in FIG. 11 in the direction perpendicular to the paper surface). In the fifth projector 42Y, the center line in the projection direction is about 45 ° from the obliquely upper side in the conveyance direction obliquely front side in the plan view and in the conveyance direction obliquely left side and in the side view with respect to the conveyance line of the workpiece W (35 It is installed so that it may cross at (° -55 °).

  The sixth projector 42Z on the upper side of the apparatus is arranged on the right side in the transport width direction when viewed in the transport direction of the object to be processed W, and in FIG. It is arranged at a position overlapping in the left-right direction of the apparatus (direction perpendicular to the paper surface of FIG. 10). The sixth projector 42Z is installed such that the projection direction center line intersects the conveyance line of the workpiece W to be processed obliquely from the front side in the conveyance direction, from the diagonally right side in the conveyance direction in plan view, and from the diagonally upper side in side view. ing.

  A plurality of projection zones along which the projection material is projected by each of the plurality of centrifugal projectors 42 in the transport line of the workpiece W (a total of two on the upstream side and the downstream side as an example in the present embodiment). Set). Similarly to the first and second embodiments, an upstream side detection unit (not shown) is provided on the upstream side in the conveyance direction for each of the plurality of projection zones, and each of the plurality of projection zones. A downstream side detection unit (not shown) is provided on the downstream side in the transport direction. The upstream detection unit and the downstream detection unit detect passage of the object to be processed W. Similarly to the first and second embodiments, the control unit 84 determines whether the object to be processed W is in the projection zone based on the detection result by the upstream detection unit and the detection result by the downstream detection unit. Only when it is determined to be within the range, the operation of the open / close gate of the flow rate adjusting device 40 is controlled so that the projection material is projected onto the projection zone.

(Action / Effect)
Next, the operation and effect of the above embodiment will be described.

  In the first projector 42U shown in FIGS. 10 and 11, the center line in the projection direction intersects the conveyance line of the workpiece W from the obliquely rear side in the conveyance direction in the side view and from the obliquely lower side in the side view. In addition, since it is installed in a direction along the conveyance line and overlapping with the conveyance line in plan view, the projection material is projected toward the workpiece W from the obliquely rear side in the conveyance direction in the side view and from the obliquely lower side in the side view. To do. The second projector 42V is installed such that the center line in the projection direction intersects the conveyance line of the object W to be processed from the diagonally rear side in the conveyance direction in plan view, diagonally from the left in the conveyance direction in plan view, and from the diagonally upper side in side view. Therefore, the projection material is projected toward the object W to be processed from the obliquely rear side in the conveying direction in plan view and from the obliquely upper side in the conveying direction obliquely left side and side view in plan view. The third projector 42W is installed such that the center line in the projection direction intersects the conveyance line of the object W to be processed from the diagonally rear side in the conveyance direction in plan view, from the diagonally right side in the conveyance direction in plan view, and from the diagonally upper side in side view. Therefore, the projection material is projected toward the object W to be processed from the obliquely rear side in the conveyance direction in a plan view and from the obliquely upper side in the conveyance direction obliquely right side and in a side view in plan view.

  The fourth projector 42X has the projection direction center line intersecting the conveyance line of the object W to be processed from the side obliquely in the conveyance direction when viewed from the side and from the obliquely lower side when viewed from the side, and in the plan view. Therefore, the projection material is projected toward the object W to be processed from the obliquely lower side in the front side view and in the side view. The fifth projector 42Y is installed such that the center line in the projection direction intersects the conveyance line of the object W to be processed from the diagonally front side in the conveyance direction in plan view, from the diagonally left side in the conveyance direction in plan view, and from the diagonally upper side in side view. Therefore, the projection material is projected toward the workpiece W from the diagonally front side in the transport direction in a plan view and from the diagonally upper side in the transport direction diagonally to the left and in a side view in plan view. The sixth projector 42Z is installed such that the projection direction center line intersects the conveyance line of the workpiece W to be processed obliquely from the front side in the conveyance direction, from the diagonally right side in the conveyance direction in plan view, and from the diagonally upper side in side view. Therefore, the projection material is projected toward the workpiece W from the diagonally front side in the transport direction in a plan view and from the diagonally upper side in the transport direction diagonally right side and in a side view in plan view.

  As described above, according to the shot blasting apparatus 120 according to the present embodiment, the entire surface of the large workpiece W can be surface-treated.

[Supplementary explanation of the embodiment]
In the above embodiment, the shot processing apparatus is the shot blasting apparatus 10, 110, 120. However, the shot processing apparatus may be a shot peening apparatus or a shot blasting apparatus and shot peening apparatus. Also good.

  Further, as a modification of the above-described embodiment, the downstream detection unit is not provided, and the control unit detects that the object to be processed is the projection zone based on the detection result by the upstream detection unit and the moving speed of the suspension. The structure which controls a projection material supply part so that a projection material may be projected on the said projection zone only when it judges that it exists in one of the ranges may be sufficient.

  As another modification, a detection unit (a component that detects the passage of the object to be processed is provided only on the upstream side in the conveyance direction of the projection zone that is set on the most upstream side in the conveyance direction without providing the downstream side detection unit. ), And the control unit performs the projection only when it is determined that the object to be processed is within any one of the projection zones based on the detection result of the detection unit and the moving speed of the suspension. The structure which controls a projection material supply part so that a projection material may be projected on a zone may be sufficient.

  Further, as a modification of the above embodiment, a configuration in which the second blast chamber 22 (second processing chamber) is not provided may be employed.

  Moreover, in the said embodiment, although the intermediate door 20 (partition door) shown by FIG. 1 etc. is provided, when the amount of processing is small, the structure which does not provide an intermediate door (partition door) is also possible. Moreover, it is good also as a structure which carries out a to-be-processed object from the entrance side by making the conveyance direction of a to-be-processed object into the direction opposite to the time of carrying in after shot processing, without providing the exit door 24 of the said embodiment. . Further, instead of at least one of the entrance door 12, the intermediate door 20 (partition door), and the exit door 24, double or triple so-called rubber warming may be arranged.

  Further, as a modified example of the above-described embodiment, a configuration may be adopted in which the height position of the object to be processed W carried into the first blast chamber 16 is changed and the object is passed through the first blast chamber 16 a plurality of times. Good. Alternatively, the object to be processed W may be stopped at an arbitrary position or moved at a low speed (lower than the normal conveying speed) to select an arbitrary polishing finish. Furthermore, you may employ | adopt the method of eliminating the projection of the location which is not required by stopping a projection in the arbitrary positions of a to-be-processed target object.

  In addition, the said embodiment and the above-mentioned some modification can be implemented combining suitably.

  Although an example of the present invention has been described above, the present invention is not limited to the above, and it is needless to say that various modifications can be made without departing from the spirit of the present invention. .

This application is based on Japanese Patent Application No. 2013-015672 filed on January 30, 2013 in Japan, the contents of which form part of the present application.
The present invention will also be more fully understood from the detailed description herein. However, the detailed description and specific examples are preferred embodiments of the present invention and are described for illustrative purposes only. This is because various changes and modifications will be apparent to those skilled in the art from this detailed description.
The applicant does not intend to contribute any of the described embodiments to the public, and the disclosed modifications and alternatives that may not be included in the scope of the claims are equivalent. It is part of the invention under discussion.
In this specification or in the claims, the use of nouns and similar directives should be interpreted to include both the singular and the plural unless specifically stated otherwise or clearly denied by context. The use of any examples or exemplary terms provided herein (eg, “etc.”) is merely intended to facilitate the description of the invention and is not specifically recited in the claims. As long as it does not limit the scope of the present invention.

10 Shot blasting equipment (shot processing equipment)
16 First blast chamber (first processing chamber)
20 Intermediate door (partition door)
22 Second blast chamber (second processing chamber)
40 Flow rate adjustment device (projection material supply unit)
42A First projector (centrifugal projector)
42B Second projector (centrifugal projector)
42C Third projector (centrifugal projector)
42D Fourth projector (centrifugal projector)
42E Fifth projector (centrifugal projector)
42F 6th projector (centrifugal projector)
42G 7th projector (centrifugal projector)
42H Eighth projector (centrifugal projector)
42I 9th projector (centrifugal projector)
42J Tenth projector (centrifugal projector)
42K Eleventh projector (centrifugal projector)
42L 12th projector (centrifugal projector)
42M first projector (centrifugal projector)
42N Second projector (centrifugal projector)
42O 3rd projector (centrifugal projector)
42P 4th projector (centrifugal projector)
42Q Fifth projector (centrifugal projector)
42R 6th projector (centrifugal projector)
42S 7th projector (centrifugal projector)
42T 8th projector (centrifugal projector)
42U first projector (centrifugal projector)
42V second projector (centrifugal projector)
42W Third projector (centrifugal projector)
42X Fourth projector (centrifugal projector)
42Y Fifth projector (centrifugal projector)
42Z 6th projector (centrifugal projector)
70 linear movement mechanism 76 hanging part 84 control part 94 injection nozzle 110 shot blasting device (shot processing device)
120 Shot blasting equipment (shot processing equipment)
A1, B1, C1, D1, E1, F1 Upstream detector A2, B2, C2, D2, E2, F2 Downstream detector CL1, CL2, CL3, CL4, CL5, CL6, CL7, CL8, CL9, CL10, CL11, CL12 Projection direction center line W Object to be processed

Claims (7)

A hanging part for suspending the object to be treated;
A rectilinear movement mechanism that linearly moves the suspended portion along the conveyance line of the object to be processed;
While projecting the projection material toward the transport line side with the rotation of the impeller, the projection direction center line with respect to the transport line,
Crossing from the front side of the transport direction obliquely in plan view or obliquely rearward side of the transport direction in plan view, diagonally left side of the transport direction in plan view, diagonally right side of the transport direction in plan view, and diagonally upside or side view in side view A plurality of centrifugal projectors installed so that
A first processing chamber in which a projection material is projected by the centrifugal projector,
A second processing chamber provided on the downstream side in the transport direction of the object to be processed with respect to the first processing chamber and provided with an injection nozzle for injecting a projection material together with compressed air;
A shot processing apparatus. As the centrifugal projector,
A first projector installed so that the projection direction center line intersects the transport line obliquely from the rear in the transport direction in plan view and obliquely from the left in the transport direction in plan view and from the obliquely lower side in side view;
A second projector that is installed so that the center line in the projection direction intersects the transport line obliquely rearward in the plan view and the obliquely upper side in the transport direction obliquely left side and side view in plan view;
A third projector installed so that the projection direction center line intersects the transport line obliquely from the back in the transport direction in plan view and obliquely from the right in the transport direction in plan view and from the obliquely lower side in side view;
A fourth projector installed so that the projection direction center line intersects the transport line obliquely from the rear in the transport direction in plan view and obliquely from the upper side in the transport direction obliquely right side and side view in plan view;
A fifth projector that is installed so that the center line in the projection direction intersects the transport line obliquely from the front side in the plan view and the obliquely lower side in the transport direction obliquely left side and side view in plan view;
A sixth projection machine installed so that the projection direction center line intersects the transport line obliquely from the front side in the plan view and the obliquely upper side in the transport direction obliquely left side and side view in plan view;
A seventh projector installed so that the projection direction center line intersects the transport line obliquely from the front side in the plan view and from the obliquely lower side in the transport direction obliquely right side and side view in plan view;
An eighth projector installed so that the projection direction center line intersects the transport line obliquely from the front side in the plan view and the obliquely upper side in the transport direction obliquely right side and side view in plan view;
The shot processing apparatus according to claim 1, further comprising: As the centrifugal projector,
The projection direction center line is installed in a direction so as to intersect with the conveyance line along the conveyance line in plan view so that the center line in the projection direction intersects with the conveyance line from the obliquely rear side in the conveyance direction in plan view and from the obliquely lower side in side view. A projector,
A second projector that is installed so that the center line in the projection direction intersects the transport line obliquely rearward in the plan view and the obliquely upper side in the transport direction obliquely left side and side view in plan view;
A third projector installed so that the projection direction center line intersects the transport line obliquely from the back in the transport direction in plan view and obliquely from the upper side in the transport direction diagonally right side and side view in plan view;
A fourth projection installed so that the center line in the projection direction intersects the transport line obliquely from the front side in the side view and from the obliquely lower side in the side view and along the transport line in the plan view and overlapping the transport line. Machine,
A fifth projection machine installed so that the center line in the projection direction intersects the transport line obliquely from the front side in the plan view and the obliquely upper side in the transport direction obliquely left side and side view in plan view;
A sixth projection machine installed so that the projection direction center line intersects the transport line obliquely from the front side in the plan view and from the obliquely upper side in the transport direction obliquely right side and side view in plan view;
The shot processing apparatus according to claim 1, further comprising: As the centrifugal projector,
A first projector installed so that the center line of the projection direction is horizontal and intersects from the diagonally rear side of the transport direction in plan view with respect to the transport line and from the diagonally left side of the transport direction in plan view;
A second projector that is installed so that the center line of the projection direction is horizontal and intersects from the diagonally rear side of the transport direction in plan view with respect to the transport line and from the diagonally right side of the transport direction in plan view;
A third projector installed so that the projection direction center line intersects the transport line obliquely from the rear in the transport direction in plan view and from the obliquely upper side in the transport direction obliquely left side and side view in plan view;
A fourth projector installed so that the projection direction center line intersects the transport line obliquely from the rear in the transport direction in plan view and obliquely from the upper side in the transport direction obliquely right side and side view in plan view;
A fifth projector installed so that the projection direction center line intersects the transport line obliquely from the back in the transport direction in plan view and obliquely from the left in the transport direction in plan view and from the obliquely lower side in side view;
A sixth projector installed so that the projection direction center line intersects the conveyance line with respect to the conveyance line obliquely in the conveyance direction obliquely from the rear side and in the planar view in the conveyance direction obliquely right side and obliquely from the side in side view;
A seventh projector installed so that the projection direction center line intersects the transport line obliquely from the front side in the plan view and the obliquely lower side in the transport direction obliquely left side and side view in plan view;
An eighth projector installed so that the projection direction center line intersects the transport line obliquely from the front side in the plan view and from the diagonally lower side in the transport direction obliquely right side and side view in plan view;
A ninth projector installed so that the projection direction center line intersects the transport line obliquely from the front side in the plan view and the diagonally upper side in the transport direction obliquely left side and side view in plan view;
A tenth projector installed such that the center line in the projection direction intersects the transport line obliquely from the front side in the plan view and the diagonally right side in the transport direction in plan view and from the diagonally upper side in the side view;
An eleventh projector installed so that the center line of the projection direction is horizontal and intersects from the oblique front side of the transport direction in plan view with respect to the transport line and from the diagonally left side of the transport direction in plan view;
A twelfth projector installed so that the center line in the projection direction is horizontal and intersects from the oblique front side of the transport direction in plan view with respect to the transport line and from the diagonally right side of the transport direction in plan view;
The shot processing apparatus according to claim 1, further comprising: A plurality of projection zones along which the projection material is projected by each of the plurality of centrifugal projectors in the conveyance line are set along the conveyance line,
An upstream side detection unit that is provided on the upstream side in the transport direction with respect to the plurality of projection zones and detects the passage of the object to be processed;
A downstream side detection unit that is provided on the downstream side in the transport direction with respect to the plurality of projection zones and detects the passage of the object to be processed;
A projection material supply unit capable of supplying and stopping supply of the projection material to the centrifugal projector, which is used for supplying the projection material to the centrifugal projector.
Based on the detection result by the upstream side detection unit and the detection result by the downstream side detection unit, the projection material is applied to the projection zone only when it is determined that the object to be processed is in any range of the projection zone. A control unit for controlling the projection material supply unit to project,
The shot processing apparatus of any one of Claims 1-4 which has these. The shot processing apparatus according to claim 5 , further comprising an openable / closable partition door that blocks a flow path between the first processing chamber and the second processing chamber in a closed state. In the second processing chamber, the object to be processed W is lowered to the bottom wall portion, and shot blasting processing is performed at a required finishing location other than the ground contact surface, and then the object to be processed W is lifted and the previous contact is made. The shot processing apparatus according to claim 6 , wherein the shot blasting process is performed at a required finishing position on the ground.

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