JP2019077015A - Shop primer line - Google Patents

Abstract

To provide a shop primer line capable of restraining a projection material from remaining on a lounge material.SOLUTION: A carrier mechanism 12 carries a lounge material W in an attitude such that a web Wa is stood and a flange Wf is set below. A first projection machine 30 projects a projection material toward a web-opposite-side surface of the flange Wf in the lounge material W, and a second projection machine 32 and a third projection machine 34 project projection materials toward a web-side surface Wf1 of the web Wa and the flange Wf in the lounge material W. The second projection machine 32 is set so that a center line CL2 in a projection direction runs along a direction orthogonal to a carriage direction X of the lounge material W in plan view, and the third projection machine 34 is positioned on an upstream side relative to the second projection machine 32 in the direction of carriage, and is set so that a center line CL3 in the projection direction inclines to a downstream side in the direction of carriage and to an inner side of a carrying width direction in plan view.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a shop primer line.

  After conveying a longiary material of T-shaped cross section in the longitudinal direction and projecting shot material onto the longiary material during the conveyance and shot blasting, processing is carried out to apply paint on the treated surface for the purpose of temporary rust prevention A line (shop primer line) is known (see, for example, Patent Document 1).

JP 2001-38628 A

  By the way, it is not preferable in terms of processing that the projection material projected onto the long material will remain on the long material.

  An object of this invention is to obtain the shop primer line which can suppress that a projection material remains to a long material in consideration of the said fact.

  The shop primer line according to the present invention as set forth in claim 1 is a shop primer line having a T-shaped cross section having a flange at one end of the web and made of a metal longitudinal material as an object to be treated, A transport mechanism for transporting the longitudinal member in a posture in which the flange is down, a shot blasting apparatus provided on the transport line and projecting a projection material onto the longitudinal member, and A coating apparatus provided in a line and disposed on the conveyance downstream side with respect to the shot blasting apparatus, for coating the long material, and provided in the conveyance line and disposed on the conveyance downstream side with respect to the coating apparatus A drying device for drying the longi material, and the shot blasting apparatus is provided on both sides of the transfer line, and A first projector configured to project a projection material toward the surface on the side opposite to the web of the runge, and the projection direction center line is set along a direction orthogonal to the conveyance direction of the long material in plan view; The projection material is provided on both sides of the conveyance line and projects the projection material toward the web side surface of the web and the flange in the long line material, and the center line of the projection direction is in the conveyance direction of the long line material in plan view A second projector set along an orthogonal direction, and provided on both sides of the transport line and disposed on the transport upstream side of the second projector, and the web of the web and the flange in the longitudinal member And a third projector configured to project the projection material toward the side surface and to incline in the transport downstream direction inward in the transport width direction in plan view.

  In addition, "the surface by the side of the web of a flange" of Claim 1 means the surface by which the web is formed in a flange (in other words, the surface arrange | positioned upward at the time of conveyance). Moreover, the "surface on the side opposite to the web on the flange" described in claim 1 refers to the surface on the side opposite to the side on which the web is formed in the flange (in other words, the surface disposed downward during conveyance).

  According to the above configuration, the transport mechanism transports the long material in the posture in which the web is raised and the flange is down along the transport line. The transfer line is provided with a shot blasting apparatus, a coating apparatus and a drying apparatus. The shot blasting apparatus projects the projectile onto the longitudinal material. The coating device disposed downstream of the shot blasting apparatus performs coating on the projected long material. A drying device disposed downstream of the coating device in the conveyance direction dries the coated longi material. Here, in the above configuration, the long material is coated while being transported in the above-described posture, so for example, the long material is transported in a posture in which the front end of the web of the long material and one left and right end of the flange are supported on the transport mechanism side Irregularity in painting is less likely to occur than in the form of painting.

  The shot blasting apparatus includes a first projector, a second projector and a third projector provided on both sides of the transfer line. The first projector projects the projection material toward the surface on the opposite web side of the flange in the long material, and the projection direction center line is set to be along the direction orthogonal to the conveyance direction of the long material in plan view It is done. The second projector projects the project material toward the web side surface of the web and the flange of the long material, and the center line of the projection direction is in a direction perpendicular to the conveyance direction of the long material in plan view. It is set.

  On the other hand, the third projector is disposed on the transport upstream side of the second projector, projects the projection material toward the web and the web side surface of the flange in the long material, and the projection direction center line is in plan view It is set to incline toward the conveyance downstream side toward the conveyance width direction inner side. For this reason, when the projection material projected by the third projector hits the long member, it is basically reflected to the outer side in the lateral direction in the conveying width direction and is conveyed downstream from the surface on the web side of the flange in the longitudinal member in the conveying width direction Since it falls, it is suppressed that it remains on the web side surface of the flange in the long material.

  In addition, when the projectiles projected by the second projector hit the long material, basically, they tend to flow upstream and downstream of the transport. However, the web side of the flange in the long material is such that it is projected by the third projector to be caught by the projection material that is going to be reflected toward the transport width direction outer side obliquely transport downstream side with respect to the portion that was going to flow to the transport upstream side. Falls to the outside in the transport width direction from the Therefore, it is possible to suppress the projection material from remaining on the web side surface of the flange in the long material by such an action.

  The shop primer line of the present invention described in claim 2 is the shop primer line according to claim 1, wherein the shot blasting apparatus is provided on the both sides of the transfer line at the transfer downstream side of the second projection machine at the transfer downstream side. A spray device capable of blowing a gas from the spray port set to be disposed above the surface on the web side of the flange toward the longitudinal member is provided.

  According to the above configuration, the shot blasting apparatus is provided with the spraying device, and the spraying device is disposed above the web side surface of the flange of the long material at the transport downstream side of the second projector on both sides of the transport line It is possible to spray gas from the spray port set to be For this reason, it is possible to blow off the blasting material remaining on the longitudinal material by the blowing of the gas.

  According to a third aspect of the present invention, in the shop primer line of the present invention, in the configuration according to the second aspect, the blowing direction of the gas of the blowing device is inclined inward in the conveyance width direction in the conveyance width direction in plan view. It is set.

  According to the above configuration, it is possible to efficiently blow down the projection material remaining in the long material and moving to the transport downstream side by the gas blown against the movement direction. In addition, the projection material remaining in the vicinity of the boundary between the flange and the web can be favorably blown down by including a vector component in which the gas spraying direction is directed inward in the transport width direction in plan view.

  The shop primer line of the present invention described in claim 4 is the configuration according to any one of claims 1 to 3, wherein the coating device is provided on the surface on the non-web side of the flange in the long member. A first spray nozzle for spraying paint toward the surface, a lateral movement mechanism for moving the first spray nozzle in the transport width direction, and webs of the web and the flange in the longitudinal member provided on both sides of the transport line A second spray nozzle for spraying paint toward the surface of the roller, a lift mechanism for moving the second spray nozzle up and down in the apparatus, and a transport upstream side of the second spray nozzle, and transporting the long material A height detection sensor for detecting the height in the state, and raising of the second spray nozzle by the elevating mechanism according to the detection result by the height detection sensor And a control unit for adjusting the range, the.

  According to the above configuration, the first spray nozzle of the coating device sprays the paint toward the surface on the non-web side of the flange in the longitudinal member. The first spray nozzle is moved in the transport width direction by the lateral movement mechanism. In addition, the second spray nozzle of the coating apparatus is provided on both sides of the transfer line, and sprays the paint toward the web side surface of the web and the flange in the long material. The second spray nozzle is raised and lowered in the apparatus vertical direction by the raising and lowering mechanism. Here, the height detection sensor provided on the conveyance upstream side of the second spray nozzle detects the height in the conveyance state of the long material, and the control unit lifts and lowers the mechanism according to the detection result by the height detection sensor. Adjust the raising and lowering range of the second spray nozzle by. Therefore, it can be suppressed that the paint is sprayed from the second spray nozzle toward the upper side of the web of the long material, and wasteful spray of the paint can be suppressed.

  The shop primer line of the present invention described in claim 5 is the configuration according to any one of claims 1 to 4, wherein both sides of the transport line are side sides of the web in the long material. An anti-falling member is provided which is set to be disposed in proximity to and extends along the conveyance direction of the long material and prevents the long material from falling.

  According to the above configuration, the anti-falling members provided on both sides of the transfer line are set to be disposed close to the side of the web in the long wire and extend along the long wire transfer direction. And prevent the fall of the longi material.

  The shop primer line of the present invention described in claim 6 is the shot blasting apparatus according to claim 5, wherein in the fall preventing member, the long material is the second projector and the third projector. It is not arrange | positioned at the area projected by this, but is divided into the conveyance upstream and conveyance downstream with respect to the said area, and is provided.

  According to the above configuration, since the fall preventing member is not disposed in the area where the long material is projected by the second projector and the third projector in the shot blasting apparatus, the project material is properly projected to the long material. can do. Moreover, since the fall prevention member is divided into the conveyance upstream side and the conveyance downstream side with respect to the area and provided, if the longitudinal material has a length of a predetermined length or more, the longitudinal material is Stable support is possible on one side and the other side in the longitudinal direction.

  The shop primer line according to the present invention described in claim 7 is, in the configuration according to any one of claims 1 to 6, configured to be a part of the transport mechanism and provided in the transport line of the drying device. The chain conveyor as the dryer carriage mechanism includes a rotatably driven endless chain, and a plurality of receivers fixed to the chain and supporting the longitudinal members in a line contact state.

  According to the above configuration, in the chain conveyor as the drying device conveyance mechanism, the endless chain is rotationally driven, and the plurality of receivers fixed to the chain support the long material in a line contact state. Thus, the damage of a painted part can be minimized by supporting the long material after painting in a line contact state.

  The shop primer line of the present invention described in claim 8 is the shot blasting apparatus according to any one of claims 1 to 7, wherein the transport mechanism is provided on a transport line of the shot blasting apparatus. A transport mechanism for a device, a transport mechanism for a coating device provided in a transport line of the coating device, and a transport mechanism for a drying device provided in a transport line of the drying device, the transport mechanism for the shot blasting device The speed at which the long material is transported by each of the coating device transport mechanism and the drying device transport mechanism is set to the same velocity by inverter control.

  According to the above configuration, the speed at which the long material is transferred by the transfer mechanism for the shot blasting device, the transfer mechanism for the coating device, and the transfer mechanism for the drying device does not vary, so the long material is caused by the variation in the transfer speed. Can be prevented from being damaged.

  The shop primer line according to the present invention as set forth in claim 9 is, in the configuration according to any one of claims 1 to 8, provided on the carry-in side of the shot blasting apparatus, in the conveyance direction of the long material. A tip portion detection sensor that detects that the tip portion has passed and outputs a detection signal, and a part of the transport mechanism is provided on the transport line of the shot blasting device, and can be rotationally driven. And a magnetic body coaxially fixed to the drive roller at an axial end of any one of the plurality of drive rollers. A gear, a proximity switch disposed on an outer peripheral side of the gear, and detecting a proximity of a tooth tip of the gear when the gear is rotated, and outputting a detection signal; The first projector, the second projector, when the number of times the detection signal from the proximity switch is input after the detection signal from the part detection sensor has become the first predetermined number set in advance. The number of times the detection signal from the proximity switch is input after the detection signal from the tip portion detection sensor is input while controlling to start the projection of the projection material by the projector and the third projector. And stopping the projection of the projection material by the first projector, the second projector, and the third projector when the second predetermined number of times is set to be greater than the first predetermined number of times. , And a control device to control.

  According to the above configuration, the tip end detection sensor provided on the loading side of the shot blasting device detects that the tip end in the conveyance direction of the long material passes, and outputs a detection signal. The driving roller conveyor provided on the conveyance line of the shot blasting apparatus includes a plurality of rotatably driven driving rollers, and an axial end portion of any one of the plurality of driving rollers is a magnetic material The cogwheel is fixed coaxially. Further, a proximity switch is disposed on the outer peripheral side of the gear, and when the gear is rotated, the proximity switch detects the proximity of the tooth tip of the gear and outputs a detection signal.

  Here, when the number of times the detection signal from the proximity switch is input to the control device after the detection signal from the leading end portion detection sensor is input to the control device, the first predetermined number of times is set. The control device controls to start the projection of the projection material by the first projector, the second projector and the third projector. In addition, after the detection signal from the leading end portion detection sensor is input to the control device, the number of times the detection signal from the proximity switch is input to the control device is set to a second predetermined number more than the first predetermined number. When the number of times is reached, the control device controls to stop the projection of the projection material by the first projector, the second projector and the third projector. For this reason, a projection material can be projected on a long material at the desired timing according to the setting of the 1st predetermined frequency and the 2nd predetermined frequency, and the useless projection of a projection material can be suppressed.

  The shop primer line according to the present invention as set forth in claim 10 is, in the configuration according to any one of claims 1 to 8, provided on the carry-in side of the shot blasting apparatus, in the conveyance direction of the long material. A tip portion detection sensor that detects that the tip portion has passed and outputs a detection signal, and a part of the transport mechanism are provided on the transport line of the coating apparatus, and can be driven to rotate. A driving roller conveyor as a transport mechanism for a coating apparatus, and a gear comprising a magnetic body coaxially fixed to the driving roller at an axial end of any one of the plurality of driving rollers. A proximity switch disposed on an outer peripheral side of the gear and detecting proximity of a tooth tip of the gear when the gear is rotated and outputting a detection signal; and a detection from the tip portion detection sensor After the signal is input, when the number of times the detection signal from the proximity switch is input reaches a first predetermined number set in advance, the coating device starts coating the long material. After the detection signal from the front end portion detection sensor is input, the number of times the detection signal from the proximity switch is input is set to be greater than the first predetermined number, and the second predetermined number is set. And a control device that controls to stop the coating on the long material by the coating device when it has become.

  According to the above configuration, the tip end detection sensor provided on the loading side of the shot blasting device detects that the tip end in the conveyance direction of the long material passes, and outputs a detection signal. The drive roller conveyor provided on the transport line of the coating apparatus includes a plurality of rotatably driven drive rollers, and a magnetic material is provided at an axial end of any one of the plurality of drive rollers. The cogwheel is fixed coaxially. Further, a proximity switch is disposed on the outer peripheral side of the gear, and when the gear is rotated, the proximity switch detects the proximity of the tooth tip of the gear and outputs a detection signal.

  Here, when the number of times the detection signal from the proximity switch is input to the control device after the detection signal from the leading end portion detection sensor is input to the control device, the first predetermined number of times is set. The control device controls to start the coating on the long material by the coating device. In addition, after the detection signal from the leading end portion detection sensor is input to the control device, the number of times the detection signal from the proximity switch is input to the control device is set to a second predetermined number more than the first predetermined number. When the number of times is reached, the control device controls to stop the coating on the long material by the coating device. For this reason, a long material can be painted at a desired timing according to the setting of the first predetermined number of times and the second predetermined number of times, and waste of paint can be suppressed.

  As explained above, according to the shop primer line of the present invention, it has the outstanding effect that it can control that projection material remains in a long material.

It is a side view showing a shop primer line concerning one embodiment of the present invention. FIG. 2 (A) is a plan view showing a shot blasting apparatus of a shop primer line. FIG. 2B is a view showing the gear and the proximity switch as seen through the case from the direction of the arrow 2B in FIG. 2A. It is a top view which shows a part of structure of a shot blasting apparatus in the state which penetrated the ceiling part of the cabinet and was simplified. It is a front view which shows a shot blasting apparatus. It is a front view which expands and shows the state in which the shot blasting process is made in the shot blasting apparatus. FIG. 6A is an enlarged front view showing a fall preventing member and the like in the shot blasting apparatus. FIG. 6 (B) is a side view showing a fall preventing member and the like in the shot blasting apparatus. FIG. 7A is a plan view showing the arrangement of the spraying device in the shot blasting device. FIG. 7B is an enlarged view seen from a position along line 7B-7B in FIG. 7A. FIG.7 (C) is the enlarged view seen from the position along the 7C-7C line of FIG. 7 (A). It is a top view which shows the coating apparatus and drying apparatus of a shop primer line. It is a front view which shows the spray nozzle etc. of a coating apparatus. It is a side view which expands and shows a drier.

  The shop primer line which concerns on one Embodiment of this invention is demonstrated using FIGS. 1-10. In these drawings, the arrow FR appropriately shown indicates the front side of the apparatus front view, the arrow UP indicates the apparatus upper side, and the arrow LH indicates the left side of the apparatus front view. The object to be treated such as shot blasting and painting in the shop primer line according to the present embodiment is made of metal (for example, steel) and has a long cross section T-shaped long material W It is assumed. As shown in FIG. 5, the longitudinal material W has a flange Wf at one end of the web Wa.

Configuration of Embodiment
First, the overall configuration of the shop primer line will be described. The shop primer line 10 which concerns on this embodiment is shown by FIG. 1 by the side view. As shown in FIG. 1, the shop primer line 10 has a transport mechanism 12. The transport mechanism 12 is configured to transport the longitudinal material W in a posture in which the web Wa is erected and the flange Wf is down along the transport line. In the figure, the transport direction of the long material W by the transport mechanism 12 is indicated by the arrow X.

  The shop primer line 10 also has a shot blasting device 14, a coating device 16 and a drying device 18. The shot blasting apparatus 14, the coating apparatus 16 and the drying apparatus 18 are all provided in the transport line. The shot blasting apparatus 14 is an apparatus for projecting a projection material onto the long material W. Further, the coating device 16 is disposed downstream of the shot blasting device 14 in the conveyance direction, and is a device for coating the longitudinal material W. Furthermore, the drying device 18 is disposed on the conveyance downstream side with respect to the coating device 16 and is a device that dries the long material W.

  In the present embodiment, a carry-in roller conveyor 13 that constitutes a part of the conveyance mechanism 12 is provided on the conveyance upstream side of the shot blasting apparatus 14, and the conveyance mechanism 12 is provided on the conveyance downstream side of the drying device 18. An unloading roller conveyor 19 which constitutes a part of the apparatus is provided.

  Next, each component of the shop primer line 10 will be described.

(Configuration of shot blasting machine etc.)
First, the shot blasting apparatus 14 will be described. The shot blasting apparatus 14 includes a cabinet 20 formed in a box shape. The inside of the cabinet 20 constitutes a processing chamber which is long in the conveyance direction (the arrow X direction) of the long material W, and in a part of the processing chamber, shot blasting is performed by projecting a projection material. In the cabinet 20, a loading port is formed on the transport upstream side (right side in the figure) of the long material W, and a discharge port is formed on the transport downstream side (left side in the figure) of the long material W.

  At the conveyance line of the shot blasting device 14, a driving roller conveyor 24 as a conveyance mechanism for a shot blasting device, which constitutes a part of the conveyance mechanism 12, is provided. The driving roller conveyor 24 is provided in the cabinet 20 and conveys the longitudinal material W. In FIG. 1, the drive roller conveyor 24 is shown in a state where the lower part of the cabinet 20 is seen through. The shot blasting apparatus 14 is shown by the top view by FIG. 2 (A). As shown in FIG. 2A, the drive roller conveyor 24 has a plurality of drive rollers 24B rotatably supported by a conveyor base 24A provided on both sides in the transport width direction. The drive roller 24B is formed of a wear resistant material. In the drawing, the conveyance width direction is indicated by an arrow Y.

  As shown in FIG. 1, the plurality of drive rollers 24B are arranged at intervals along the transport direction (arrow X direction), and drive motor M1 (left in FIG. 1) via a known drive force transmission mechanism not shown. , And is rotationally driven by the drive force of the drive motor M1. That is, the longitudinal material W is placed on the driving roller 24B and conveyed. A control device 26 (shown as a block in the drawing) is connected to the drive motor M1, and the operation of the drive motor M1 is controlled by the control device 26.

  The control device 26 includes, for example, a storage device, an arithmetic processing device, and the like. Although not illustrated in detail, the arithmetic processing unit includes a CPU, a memory, a storage unit, and a communication interface (I / F) unit, which are connected to one another via a bus, The program of the control process of is stored. Further, the storage device and the arithmetic processing unit can communicate with each other through a communication interface (I / F) unit. Then, in the shop primer line 10, a program stored in the storage unit of the control device 26 is executed according to the operation of a control panel (not shown) by the operator.

  In FIG. 3, a part of the configuration of the shot blasting apparatus 14 is shown in a simplified plan view through the ceiling of the cabinet 20. 6A shows a cross-sectional view corresponding to the enlarged cross section taken along line 6A-6A of FIG. In addition, hatching of a cut surface is abbreviate | omitted in FIG. 6 (A). Moreover, FIG. 6 (B) has shown the fall prevention member 28 grade | etc., In the shot blasting apparatus 14 mentioned later by a side view.

  As shown in FIG. 3 and FIG. 6, anti-falling members 28 are provided on both sides of the transfer line. The fall prevention member 28 is formed into a round bar shape, and is set to be disposed close to the side of the web Wa in the longitudinal material W, and extends along the conveying direction X of the longitudinal material W, and the longitudinal material 28 Prevent W from falling down. As shown in FIGS. 3 and 6A, the anti-falling member 28 is supported by a support portion 29B provided on the side wall 20S of the cabinet 20 via a connecting member 29A extending in the conveyance width direction Y. ing. Details of the arrangement configuration of the fall prevention member 28 will be described later.

  The shot blasting device 14 is shown in front view in FIG. Further, FIG. 5 is an enlarged front view showing a state in which the shot blasting is performed in the shot blasting apparatus 14. As shown in FIGS. 3 to 5, the shot blasting apparatus 14 includes a first projector 30, a second projector 32 and a third projector 34. In the following description, when the first projector 30, the second projector 32, and the third projector 34 are described without distinction, the projectors 30, 32, and 34 are abbreviated.

  The first projector 30, the second projector 32, and the third projector 34 are all centrifugal projectors, and all are provided on both sides of the transport line. These projectors 30, 32, 34 have rotatable impellers (not shown), and are capable of applying a centrifugal force to the projection material by the rotation of the impellers. The projectors 30, 32, and 34 are configured to project the projection material accelerated by the centrifugal force toward the transport line side as the impeller rotates. Further, the projection material projected by the projectors 30, 32, 34 spreads in a diverging manner (see the two-dot chain line in FIG. 3 and FIG. 5) and hits the longitudinal material W. The arrangement configuration of the projectors 30, 32, and 34 will be described later in detail.

  As shown in FIGS. 1 and 4, the projectors 30, 32 and 34 are connected to a shot flow rate adjustment device 36. The shot flow rate adjustment device 36 is a device that supplies the projection material to the projectors 30, 32, and 34, and is provided with a gate (not shown) that can be opened and closed in the projection material supply unit. The shot flow rate adjusting device 36 can adjust the amount of projection material supplied to the projectors 30, 32, 34 by changing the opening degree of the gate.

  Further, a circulation device 38 is connected to the projectors 30, 32, 34 via a shot flow rate adjustment device 36. The circulation device 38 is a device for conveying the projection material projected by the projectors 30, 32, 34 and circulating it to the projectors 30, 32, 34, and the projection material on the lower side of the drive roller conveyor 24 described above And a hopper 38H (see FIG. 4) for collecting the As shown in FIG. 4, a screw conveyor 38A for collecting projectiles is provided on the lower end side of the hopper 38H.

  As shown in FIG. 1, the screw conveyor 38A extends along the conveyance direction (the arrow X direction) of the long wire W, and the shaft portion is rotatably supported on the cabinet 20 side (not shown). ). The screw conveyor 38 </ b> A conveys the projection material to the longitudinal central portion side by rotating about an axis by motor drive. A lower screw conveyor 38B is provided immediately below the longitudinal central portion of the screw conveyor 38A. The lower screw conveyor 38B extends with the direction orthogonal to the conveyance direction (the arrow X direction) of the long material W in a plan view as an axial direction, and the shaft portion is rotatably supported on the cabinet 20 side. (Not shown). The lower screw conveyor 38B is configured to convey the projection material dropped from the longitudinal central portion of the screw conveyor 38A to the left side of the apparatus shown in FIG. 4 by rotating about the axis by driving the motor. The device left end of the lower screw conveyor 38B faces the lower end side of the bucket elevator 38C.

  The bucket elevator 38C has a known structure and thus detailed description is omitted. However, endless belts (not shown) are wound around pulleys (not shown) disposed above and below the shot blasting apparatus 14, and a large number of endless belts A bucket (not shown) is attached. Thus, the bucket elevator 38C picks up the project material supplied from the lower screw conveyor 38B with the bucket, and rotates the pulley with a motor to convey the project material in the bucket toward the upper side of the apparatus It is supposed to

  An upper screw conveyor 38E is connected to an upper end side of the bucket elevator 38C via a separator 38D and the like. The upper screw conveyor 38E is disposed along the apparatus left-right direction, and conveys the projection material in the apparatus left-right direction to be supplied to the shot tank 38F. The shot flow rate adjustment device 36 described above is provided at the lower end side of the shot tank 38F, and the projection material in the shot tank 38F is the projection machine 30, 32, 32 by opening the gate of the shot flow rate adjustment device 36. It is to be supplied to 34.

  As shown in FIG. 5, the first projector 30 provided on the lower side of the apparatus projects the projection material toward the surface Wf2 on the non-web side of the flange Wf in the longitudinal member W, and is shown in FIG. Thus, the projection direction center line CL1 is set to be along the direction orthogonal to the conveyance direction X of the long material W in plan view. Further, as shown in FIG. 5, the second projector 32 provided at the middle portion in the vertical direction of the apparatus projects the projection material toward the web W on the web W and the web W side of the flange W f in the longitudinal member W At the same time, as shown in FIG. 3, the projection direction center line CL2 is set along the direction orthogonal to the conveyance direction X of the long material W in a plan view. In addition, as shown in FIG. 5, the third projector 34 provided on the upper side of the apparatus projects the projection material toward the web W on the long material W and the surface Wf1 on the web side of the flange Wf. As shown in FIG. 3, the third projector 34 is disposed upstream of the second projector 32 in the transport direction. The third projector 34 is set such that the projection direction center line CL3 is inclined inward in the conveyance width direction in the conveyance width direction in plan view.

  On the other hand, in the shot blasting apparatus 14, the fall prevention member 28 is not disposed in the area 22 where the long material W is projected by the second projector 32 and the third projector 34, and the upstream side of conveyance with respect to the area 22 And it is divided and provided in the conveyance downstream side. Further, as shown in FIG. 6 (B), although three fall prevention members 28 are set up and down in the part near the above-mentioned area 22, one part of the fall prevention member 28 is apart from the above-mentioned area 22. Only books are set.

  Further, as shown in FIG. 2 (A), a tip end detection sensor 40 is provided on the loading side of the shot blasting apparatus 14. The front end portion detection sensor 40 is configured to include a photoelectric switch, and includes a light emitting portion 40A disposed on one side in the conveyance width direction Y and a light receiving portion 40B disposed on the other side in the conveyance width direction Y There is. The leading end portion detection sensor 40 is connected to the control device 26, detects that the leading end portion in the conveyance direction of the long material W passes, and outputs a detection signal to the control device 26.

  FIG. 2 (B) shows the case 41 seen through from the direction of the arrow 2B in FIG. 2 (A). As shown in FIG. 2, an axial end portion of any one of the plurality of drive rollers 24B (in the present embodiment, as an example, the drive roller 24B1 on the conveyance downstream side) is made of a magnetic material at its axial end. A gear 42 (see FIG. 2B) is coaxially fixed to the drive roller 24B (24B1). As shown in FIG. 2B, a proximity switch 44 is disposed on the outer peripheral side of the gear 42. The proximity switch 44 is connected to the control device 26 (see FIG. 2A), detects proximity of the tip 42A of the gear 42 and outputs a detection signal to the control device 26 when the gear 42 rotates. It has become.

  Here, the control device 26 shown in FIG. 2A is configured such that the number of times the detection signal from the proximity switch 44 is input after the detection signal from the tip detection sensor 40 is input is set in advance. When the predetermined number of times (N1) is reached, control is performed so as to start the projection of the projection material by the first projector 30, the second projector 32 and the third projector 34 (all refer to FIG. 3). Further, the control device 26 is configured such that the number of times the detection signal from the proximity switch 44 is input after the detection signal from the distal end portion detection sensor 40 is input is greater than the first predetermined number (N1) Control is performed so as to stop the projection of the projection material by the first projector 30, the second projector 32 and the third projector 34 (all refer to FIG. 3) when the second predetermined number (N2) is reached .

  In FIG. 7 (A), in the shot blasting apparatus 14, a part on the conveyance downstream side of the projectors 30, 32, 34 (see FIG. 3) is shown in a simplified plan view. FIG. 7 (B) shows an enlarged view seen from a position along line 7B-7B in FIG. 7 (A). This FIG. 7 (B) is also an enlarged view seen from the position along the 7b-7b line of FIG. 7 (A). FIG. 7C shows an enlarged view as viewed from a position along line 7C-7C in FIG. 7A.

  As shown in FIG. 7, the shot blasting apparatus 14 includes a spraying apparatus 46 (also referred to as “blow apparatus”) provided with elongated spraying openings 46A, 46B, 46C. The spray ports 46A, 46B and 46C of the spray device 46 are on the transport downstream side of the second projector 32 (see FIG. 3) on both sides of the transport line and on the web Wf1 side of the flange Wf in the longitudinal material W It is set to be placed in. The spray device 46 includes a blower fan 46D provided on the upper part of the cabinet 20 shown in FIG. The blower fan 46D is operable by the driving force of a drive motor (not shown), and is connected to the duct 46E shown in FIGS. 2 (A) and 7. As shown in FIG. 7, nozzle portions 46N1, 46N2, and 46N3 having spray ports 46A, 46B, and 46C are provided on the lower end side of the duct 46E. The spray device 46 is directed from the spray ports 46A, 46B, 46C to the longitudinal material W by driving of the drive motor (more specifically, a portion from the side surface of the web Wa to the surface Wf1 on the web side of the flange Wf (flange It is possible to blow gas toward any part of the Wf and the web Wa).

  As shown in FIG. 7A, the gas blowing direction (see arrows f1, f2 and f3) of the blowing device 46 is set to incline in the transport width direction inward in the transport width direction in plan view. There is. In the present embodiment, the gas blowing direction (see arrows f2 and f3) of the blowing ports 46B and 46C set on the transport downstream side of the blowing port 46A is the blowing direction of the gas from the blowing port 46A (see arrow f1). Compared to the above, it faces more upstream in transport. In addition, a drive motor (not shown) of the spray device 46 is connected to the control device 26 (see FIG. 1) (not shown).

(Configuration of coating device etc.)
Next, the coating apparatus 16 of the shop primer line 10 shown by FIG. 1 is demonstrated.

  As shown in FIG. 1, the coating device 16 includes a cabinet 50 formed in a box shape. The inside of the cabinet 50 constitutes a processing chamber in which a painting process is performed. In the cabinet 50, a loading port is formed on the transport upstream side (right side in the drawing) of the long material W, and a discharge port is formed on the transport downstream side (left side in the drawing) of the long material W. Further, as shown in FIG. 9, filters 51 for capturing paint mist are provided on both sides in the cabinet 50. In FIG. 9, the flow of air in the cabinet 50 is indicated by the downward arrow and the sideward arrow.

  As shown in FIG. 1, on the conveyance line of the coating device 16, a drive roller conveyor 52 as a conveyance device for the coating device, which constitutes a part of the conveyance mechanism 12, is provided. The driving roller conveyor 52 is provided in the cabinet 50 from a portion on the conveyance upstream side of the cabinet 50 and conveys the longitudinal material W. The coating device 16 and the drying device 18 of the shop primer line 10 are shown in a plan view in FIG. As shown in FIG. 8, in the driving roller conveyor 52, a plurality of driving rollers 52B are rotatably supported by a conveyor base 52A provided on both sides in the conveyance width direction. In FIG. 8, a part of the drive roller conveyor 52 is shown in a state where a part of the ceiling part of the cabinet 50 is seen through. Further, although not shown in detail in FIG. 8, a large number of projections in the form of warts are formed on the outer peripheral surface of the drive roller conveyor 52.

  The plurality of drive rollers 52B shown in FIG. 1 are arranged at intervals along the transport direction (arrow X direction), and drive motor M2 (shown as a block in the figure) via a known drive force transmission mechanism. , And is rotationally driven by the driving force of the driving motor M2. That is, the long wire W is placed on the drive roller 52B and conveyed. The control device 26 is connected to the drive motor M2, and the operation of the drive motor M2 is controlled by the control device 26.

  As shown in FIG. 9, the coating device 16 includes a first spray nozzle 54 that sprays paint toward the surface Wf2 on the non-web side of the flange Wf in the longitudinal material W, and the web Wa and the flange in the longitudinal material W A second spray nozzle 56 that sprays paint toward the web-side surface Wf1 of Wf is provided. The second spray nozzles 56 are provided on both sides of the transport line. In addition, the coating by the coating apparatus 16 of this embodiment is a coating aiming at temporary corrosion prevention, and the coating material used for this coating is usually called a shop primer.

  The first spray nozzle 54 is connected to a paint tank 53B (shown in a block) via a tube (not shown) and a paint supply mechanism 53A (shown in a block). The paint supply mechanism 53A is for supplying the paint in the paint tank 53B to the first spray nozzle 54, and is configured to pressurize the liquid paint and to feed it to the first spray nozzle 54 through the tube. There is.

  A lateral movement mechanism 58 is provided on the proximal end side of the first spray nozzle 54. The lateral movement mechanism 58 includes a guide 58A extending in the transport width direction Y, and also includes a slider 58B that moves in the transport width direction Y along the guide 58A. The base end side of the first spray nozzle 54 is fixed to the slider 58B. Further, the slider 58B is fixed to a predetermined portion (a portion disposed on the upper side in the figure as an example) of the endless belt 58C. The endless belt 58C is wound around a drive pulley 58D and a driven pulley 58E arranged in parallel in the device width direction. The driving pulley 58D is adapted to be applied with a driving force from a driving motor 58M (shown as a block in the figure). Then, in a state where the drive force from the drive motor 58M is applied to the drive pulley 58D, the slider 58B to which the base end side of the first spray nozzle 54 is fixed moves in the transport width direction Y along the guide 58A. That is, the lateral movement mechanism 58 moves the first spray nozzle 54 in the transport width direction Y. The drive motor 58 M of the lateral movement mechanism 58 is connected to the controller 26, and the operation is controlled by the controller 26.

  The second spray nozzle 56 is connected to the paint tank 55B (shown in a block) via a tube (not shown) and a paint supply mechanism 55A (shown in a block). The paint supply mechanism 55A is for supplying the paint in the paint tank 55B to the second spray nozzle 56, and is configured to pressurize the liquid paint and to feed it to the second spray nozzle 56 through the tube. There is.

  A lift mechanism 60 is provided on the proximal end side of the second spray nozzle 56. The elevating mechanism 60 includes a guide 60A extending in the apparatus vertical direction, and also includes a slider 60B moving in the apparatus vertical direction along the guide 60A. The base end side of the second spray nozzle 56 is fixed to the slider 60B. In addition, the slider 60B is fixed to a predetermined portion of the endless belt 60C (a portion disposed, for example, inside in the conveyance width direction in the figure). The endless belt 60C is wound around a drive pulley 60D and a driven pulley 60E arranged in parallel in the apparatus vertical direction. The driving pulley 60D is adapted to be applied with a driving force from a driving motor 60M (shown as a block in the drawing). Then, in a state where the drive force from the drive motor 60M is applied to the drive pulley 60D, the slider 60B to which the base end side of the second spray nozzle 56 is fixed moves up and down in the apparatus vertical direction along the guide 60A. That is, the raising and lowering mechanism 60 raises and lowers the second spray nozzle 56 in the apparatus vertical direction (see the arrow Z).

  Further, on the transport upstream side of the second spray nozzle 56, a height detection sensor 62 (shown schematically in the drawing) shown in FIG. 1 is provided. The height detection sensor 62 is configured to include a phototube disposed on one side in the transport width direction with the vertical direction of the device as the longitudinal direction, and a light source disposed on the other side in the transport width direction, It is considered as a sensor which detects the height in the conveyance state of the longitudinal material W shown in FIG. As shown in FIG. 1, the height detection sensor 62 is connected to the control device 26, and outputs a signal of the detection result to the control device 26. Further, as shown in FIG. 9, in the lifting mechanism 60, the drive motor 60M is connected to the control device 26 as a control unit, and the control device 26 controls the operation of the drive motor 60M. Then, the control device 26 adjusts the elevation range of the second spray nozzle 56 by the elevation mechanism 60 according to the detection result by the height detection sensor 62 (see FIG. 1).

  On the other hand, from the magnetic body at the axial end of any one of the plurality of drive rollers 52B shown in FIG. 8 (in the present embodiment, the drive roller 52B1 shown partially enlarged as an example) A gear 64 is coaxially fixed to the drive roller 52B1. A proximity switch 66 is disposed on the outer peripheral side of the gear 64. The positional relationship between the gear 64 and the proximity switch 66 is similar to the positional relationship between the gear 42 and the proximity switch 44 shown in FIG. 2 (B). Note that the partial enlarged view of FIG. 8 is simplified and the peripheral structure is omitted to easily show the configuration. The proximity switch 66 shown in FIG. 8 is connected to the control device 26 and detects the proximity of the tip of the gear 64 when the gear 64 is rotated, and outputs a detection signal to the control device 26.

  Here, the control device 26 shown in FIG. 9 is the number of times the detection signal from the proximity switch 66 (see FIG. 8) is input after the detection signal from the tip detection sensor 40 (see FIG. 2) is input. The paint supply mechanisms 53A and 55A are controlled such that the coating device 16 starts painting on the long material W when the first predetermined number of times (n1) has been set in advance. Further, the control device 26 receives the detection signal from the leading end portion detection sensor 40 (see FIG. 2), and then the detection signal from the proximity switch 66 (see FIG. 8) is input a first predetermined number of times. The paint supply mechanisms 53A and 55A are controlled so as to stop the coating on the long material W by the coating device 16 when the second predetermined number (n2) set more than (n1) is reached.

  As shown in FIGS. 1, 8 and 9, a plurality of ducts D 1, D 2, D 3 are connected to the ceiling of the cabinet 50. The duct D3 is connected to the duct D2, and the duct D2 is connected to the duct D1. As shown in FIG. 9, an axial flow fan 68A for intake (generally for ventilation) is provided in the duct D1, and an axial flow fan 68B for exhaust (generally for ventilation) is provided in the duct D2. Is provided. The axial fans 68A and 68B are schematically illustrated in a state where the ducts D1 and D2 are seen through.

(Configuration of dryer etc.)
Next, the drying device 18 of the shop primer line 10 shown in FIG. 1 will be described using FIGS. 8 and 10. FIG. 10 shows the drying device 18 in an enlarged side view.

  As shown in FIGS. 8 and 10, the drying device 18 includes a cabinet 70 formed in a box shape. The inside of the cabinet 70 constitutes a processing chamber in which the drying processing is performed. In the cabinet 70, a loading port is formed on the transport upstream side (right side in the figure) of the long material W, and a discharge port is formed on the transport downstream side (left side in the figure) of the long material W.

  On the transport line of the drying device 18, a chain conveyor 72 as a transport mechanism for the drying device, which constitutes a part of the transport mechanism 12, is provided. As shown in FIG. 10, the chain conveyor 72 includes an endless chain 72C that is rotationally driven. The chain 72C is wound around the sprocket 72A disposed on the carry-in side and the sprocket 72B disposed on the carry-out side, and is stretched in the conveyance direction X of the longitudinal material W. The sprocket 72B disposed on the carry-out side is connected to the drive motor M3 via the drive power transmission mechanism 72T and is capable of continuous rotation. As shown in FIG. 1, a control device 26 is connected to the drive motor M3 so that the operation of the drive motor M3 is controlled by the control device 26.

  Further, as shown in FIG. 10, a plurality of receivers 72D (which are elements grasped as "attachments") are fixed to the chain 72C. In FIG. 10, for convenience, some of the plurality of receptacles 72D are illustrated, not all. The receptacle 72D is disposed on the outer peripheral side of the chain 72C, and is erected relative to the chain 72C in a side view shown in FIG. As shown in the partial enlarged view of FIG. 10, the receiver 72D is provided with a substrate portion 72D1 which is erected relative to the chain 72C and extends in the transport width direction (direction perpendicular to FIG. 10). A semi-cylindrical tip end receiving portion 72D2 is provided which is formed on the tip end side of 72D1 and extends in the transport width direction (direction perpendicular to FIG. 10). The receiving tool 72D is set so that the semicircular curved surface portion of the tip end side receiving portion 72D2 in the side view shown in FIG. 10 faces away from the chain 72C. Thus, the receiver 72D is configured to support the long wire W in a line contact state.

  Note that, as a modification of the present embodiment, instead of the receiving tool 72D, an angle shape or a triangular prism whose tip end is set to extend in the transport width direction and to turn the corner to the opposite side to the chain 72C side. The receiving tool provided with the part (receiving part) of (1) may be applied, and the receiving tool may be configured to support the longitudinal member W in a line contact state.

  As described above, the drive motors M1, M2 and M3 shown in FIG. 1 are connected to the controller 26. The drive roller conveyor 24 provided in the conveyance line of the shot blasting apparatus 14, the drive roller conveyor 52 provided in the conveyance line of the coating apparatus 16, and the long line by the chain conveyor 72 provided in the conveyance line of the drying apparatus 18. The speed at which the material W is transported is set to the same speed by inverter control.

  As shown in FIG. 8, a burner 74 is provided in the cabinet 70 of the drying device 18. The burner 74 is set to generate hot air for drying and to supply the hot air to the side of the long material W on the chain conveyor 72. That is, the drying device 18 is a device for drying the coating on the surface of the long material W with hot air generated by the burner 74 as an example.

  Further, a duct D4 is connected to the ceiling of the cabinet 70. The duct D4 is connected to the duct D1. In the duct D4, an axial flow fan 76 for exhaust (in a broad sense, for ventilation) is provided. The axial fan 76 is schematically illustrated in a state where the duct D4 is seen through.

[Operation / effect of the embodiment]
Next, the operation and effects of the above embodiment will be described.

  As shown in FIG. 1, the transport mechanism 12 transports the longitudinal material W in the posture in which the web Wa is erected and the flange Wf is down along the transport line. A shot blasting apparatus 14, a coating apparatus 16 and a drying apparatus 18 are provided on the transfer line. The shot blasting apparatus 14 projects the projectile onto the longitudinal material W. The coating device 16 disposed on the conveyance downstream side with respect to the shot blasting device 14 coats the projected longitudinal material W. The drying device 18 disposed on the conveyance downstream side with respect to the coating device 16 dries the coated longitudinal material W. Here, in the present embodiment, since the long wire W is coated while being transported in the above-described posture, for example, the long wire is supported in a posture in which the front end of the web of the long wire and one left and right end of the flange are supported on the transport mechanism side. Irregularity in coating is less likely to occur than in the form of transport and coating.

  As shown in FIGS. 3 and 5, the shot blasting apparatus 14 includes a first projector 30, a second projector 32 and a third projector 34 respectively provided on both sides of the transfer line. The first projector 30 projects the projection material toward the surface Wf2 on the non-web side of the flange Wf in the longitudinal material W, as shown in FIG. 5, and as shown in FIG. CL1 is set to be along a direction orthogonal to the conveyance direction X of the longitudinal material W in plan view. The second projector 32 projects the projectile toward the web W on the web side of the web W and the flange Wf in the longitudinal member W, as shown in FIG. 5, and as shown in FIG. The center line CL2 is set to be along a direction orthogonal to the conveyance direction X of the longitudinal material W in plan view.

  On the other hand, the third projector 34 projects the projection material toward the surface Wf1 on the web side of the web Wa and the flange Wf in the longitudinal material W as shown in FIG. 5, and as shown in FIG. It arrange | positions conveyance upstream rather than the 2nd projector 32, and it is set so that projection direction centerline CL3 may incline in the conveyance downstream side toward conveyance width direction inner side in planar view. Therefore, when the projection material projected by the third projector 34 hits the long material W, it is basically reflected to the outer side in the transport width direction diagonally on the downstream side from the web side surface Wf1 of the flange Wf in the long material W Since it falls to the conveyance width direction outer side, remaining on the surface Wf1 on the web side of the flange Wf in the long material W is suppressed.

  In addition, when the projectiles projected by the second projector 32 hit the longitudinal member W, basically, they tend to flow upstream and downstream of the transport. However, the flange Wf of the longitudinal member W is such that the portion which is to flow to the transport upstream side is wound by the projection material to be projected by the third projector 34 and to be reflected to the transport width direction outer side diagonal transport downstream side. Falls from the web-side surface Wf1 of the Therefore, it is possible to suppress the projection material from remaining on the surface Wf1 on the web side of the flange Wf in the longitudinal material W by such an action.

  Further, as shown in FIG. 7, the shot blasting device 14 is provided with a spraying device 46, and the spraying device 46 is on the transport downstream side of the second projector 32 (see FIG. 3) on both sides of the transport line. It is possible to spray a gas from the spray ports 46A, 46B, and 46C set to be disposed above the web-side surface Wf1 of the flange Wf in the longitudinal member W toward the longitudinal member W. For this reason, the blasting material remaining on the longitudinal material W can be blown off by the blowing of a gas. As a result, the coating nonuniformity at the time of coating at the process of the coating which is a back process is suppressed.

  Further, in the present embodiment, the blowing direction of the gas of the blowing device 46 is set to be inclined inward in the conveyance width direction toward the conveyance upstream side in plan view. For this reason, the blasting material remaining on the web-side surface Wf1 of the flange Wf in the longitudinal material W and intended to move to the transport downstream side is efficiently blown down by the gas blown against the moving direction. Can. In addition, the projection material remaining in the vicinity of the boundary between the flange Wf and the web Wa can be favorably blown off by including a vector component in which the gas blowing direction is directed inward in the transport width direction in plan view.

  As described above, according to the shop primer line 10 shown in FIG. 1 of the present embodiment, the projection material can be prevented from remaining on the longitudinal material W.

  Further, in the present embodiment, as shown in FIG. 6, the fall preventing members 28 provided on both sides of the transport line are set to be disposed in proximity to the side of the web Wa in the long wire W. And extends along the conveying direction X of the longitudinal material W and prevents the longitudinal material W from falling down.

  Further, in the present embodiment, as shown in FIG. 3, in the shot blasting device 14, in the fall preventing member 28, the fall prevention member 28 is positioned in the area 22 where the long projectile W is projected by the second projector 32 and the third projector 34. It is not arrange | positioned but is divided into the conveyance upstream side and conveyance downstream side with respect to the said area 22, and is provided. As described above, since the fall prevention member 28 is not disposed in the area 22 where the long projection W is projected by the second projector 32 and the third projection 34, the projection is properly projected to the long access W can do. Further, since the fall prevention member 28 is provided on the transport upstream side and the transport downstream side with respect to the area 22, if the longitudinal material W has a length of a predetermined length or more, the longitudinal material W can be stably supported on one side and the other side in the longitudinal direction.

  Further, in the present embodiment, the drive roller conveyor 24 provided in the conveyance line of the shot blasting apparatus 14 shown in FIG. 1, the drive roller conveyor 52 provided in the conveyance line of the coating apparatus 16, and the conveyance line of the drying apparatus 18 The speeds at which the longitudinal members W are transported by the chain conveyors 72 provided at the same time are set to the same speed by inverter control. That is, the speeds at which the long material W is transported by the drive roller conveyors 24 and 52 and the chain conveyor 72 do not vary. For this reason, it is possible to prevent the longitudinal material W from being damaged due to the variation of the transport speed.

  Further, in the present embodiment, the front end detection sensor 40 provided on the carry-in side of the shot blasting device 14 shown in FIG. 2 detects that the front end in the conveyance direction of the long material W passes and detects the detection signal. Output. The driving roller conveyor 24 provided on the conveyance line of the shot blasting apparatus 14 includes a plurality of rotatably driven driving rollers 24B, and the axial direction of any one driving roller 24B1 of the plurality of driving rollers 24B. A gear 42 made of magnetic material is coaxially fixed to the end. Further, a proximity switch 44 is disposed on the outer peripheral side of the gear 42. The proximity switch 44 detects the proximity of the tip 42A of the gear 42 when the gear 42 is rotated, and outputs a detection signal.

  Here, after the detection signal from the leading end portion detection sensor 40 is input to the control device 26, the number of times the detection signal from the proximity switch 44 is input to the control device 26 is a first predetermined number of times (N1 When it becomes), the control device 26 controls to start the projection of the projection material by the first projector 30, the second projector 32 and the third projector 34 (all refer to FIG. 3). In addition, after the detection signal from the leading end portion detection sensor 40 is input to the control device 26, the number of times the detection signal from the proximity switch 44 is input to the control device 26 is more than the first predetermined number (N1). When the set second predetermined number (N2) is reached, the control device 26 controls the projection material by the first projector 30, the second projector 32, and the third projector 34 (all refer to FIG. 3). Control to stop the projection. For this reason, the projection material can be projected onto the longitudinal material W at a desired timing according to the setting of the first predetermined number of times (N1) and the second predetermined number of times (N2), thereby suppressing useless projection of the projection material be able to.

  Further, in the present embodiment, the drive roller conveyor 52 provided on the transport line of the coating device 16 shown in FIG. 8 includes a plurality of drive rollers 52B that can be rotationally driven, and any of the plurality of drive rollers 52B. A gear 64 made of a magnetic material is coaxially fixed to an axial end of one drive roller 52B1. A proximity switch 66 is disposed on the outer peripheral side of the gear 64. The proximity switch 66 detects the proximity of the tip of the gear 64 and outputs a detection signal when the gear 64 is rotated.

  Here, after the detection signal from the distal end portion detection sensor 40 (see FIG. 2) is input to the control device 26, the number of times the detection signal from the proximity switch 66 is input to the control device 26 is set in advance. When the predetermined number of times (n1) is reached, the control device 26 controls the coating device 16 shown in FIG. 9 to start painting on the longitudinal material W. In addition, after the detection signal from the distal end portion detection sensor 40 (see FIG. 2) is input to the control device 26, the number of times the detection signal from the proximity switch 66 (see FIG. 8) is input to the control device 26 is When the second predetermined number (n2) set more than the first predetermined number (n1) is reached, the control device 26 controls the coating device 16 to stop the coating on the longitudinal material W. For this reason, a long material can be painted at a desired timing according to the setting of the first predetermined number of times (n1) and the second predetermined number of times (n2), and waste of paint can be suppressed.

  Further, in the present embodiment, the first spray nozzle 54 of the coating device 16 shown in FIG. 9 sprays the paint toward the surface Wf2 on the non-web side of the flange Wf in the longitudinal material W. The first spray nozzle 54 is moved in the transport width direction Y by the lateral movement mechanism 58. In addition, the second spray nozzles 56 of the coating device 16 are provided on both sides of the transport line, and spray the paint toward the web W on the long material W and the surface Wf1 on the web side of the flange Wf. The second spray nozzle 56 is raised and lowered in the apparatus vertical direction by the raising and lowering mechanism 60. Here, the height detection sensor 62 shown in FIG. 1 provided on the conveyance upstream side of the second spray nozzle 56 detects the height of the long material W in the conveyance state, and the control device 26 detects the height. In accordance with the detection result by the sensor 62, the elevating range of the second spray nozzle 56 by the elevating mechanism 60 shown in FIG. 9 is adjusted. Therefore, it can be suppressed that the paint is sprayed from the second spray nozzle 56 toward the upper side than the web Wa of the long material W, and wasteful jet of paint can be suppressed.

  Further, in the present embodiment, as shown in FIG. 10, in the chain conveyor 72 as the drying device transport mechanism, the endless chain 72C is rotationally driven, and the plurality of receivers 72D fixed to the chain 72C are long members. Support W in line contact. Thus, the damage of a painted part can be minimized by supporting the long material W after painting in a line contact state.

[Supplementary explanation of the embodiment]
In addition, a reversing machine for reversing the longitudinal material W may be provided on the transport downstream side with respect to the discharge roller conveyor 19 shown in FIG. 1, and on the transport downstream side of such a reversing machine, the longitudinal A printing device may be provided to attach a part number to the material W.

  Moreover, in the said embodiment, as FIG. 5 shows, although the 3rd projector 34 is provided in a position high in the apparatus up-down direction rather than the 2nd projector 32, the 3rd projector (34) is A configuration may also be employed in which the second projector (32) is provided at a lower position in the apparatus vertical direction than the second projector (32), and the third projector (34) is provided at the same height position as the second projector (32) in the apparatus vertical direction. Can be adopted.

  Moreover, in the said embodiment, as FIG. 7 shows, the shot blasting apparatus 14 is equipped with the spraying apparatus 46, Although such a structure is preferable, the shot blasting apparatus does not have the spraying apparatus (46). It can be taken.

  Further, in the above embodiment, the gas blowing direction (f1, f2, f3) of the blowing device 46 is set to be inclined toward the transport upstream side in the transport width direction in plan view, and such a configuration However, the gas blowing direction of the spray device 46 is not limited thereto.

  Further, in the above embodiment, the control device 26 adjusts the elevation range of the second spray nozzle 56 by the elevation mechanism 60 shown in FIG. 9 according to the detection result by the height detection sensor 62 shown in FIG. Although such a configuration is preferable, for example, it is possible to provide a configuration in which a plurality of second spray nozzles (56) are provided in parallel in the apparatus vertical direction without providing the elevating mechanism (60). In such a configuration in which a plurality of second spray nozzles (56) are juxtaposed in the apparatus vertical direction, for example, the control device (26) is an upper second spray nozzle according to the detection result by the height detection sensor (62). It is also possible to execute or stop the spray of paint from (a spray nozzle disposed on the upper side among the plurality of second spray nozzles arranged in parallel in the vertical direction of the apparatus).

  Moreover, in the said embodiment, although the fall prevention member 28 shown by FIG. 6 is provided and such a structure is preferable, the structure in which a fall prevention member (28) is not provided can also be taken.

  Further, in the above embodiment, in the shot blasting device 14, the falling prevention member 28 transports upstream and downstream with respect to the area 22 where the long material W is projected by the second projector 32 and the third projector 34. Although such a configuration is preferable, a configuration that is not divided as such can also be adopted.

  Further, in the above embodiment, as shown in FIG. 10, the longitudinal material W is supported in line contact with the receiver 72D of the chain conveyor 72 provided in the drying device 18, and such a support structure is Although it is preferable, the structure supporting the long material in the drying device (18) is not limited to this.

  Further, in the above embodiment, as shown in FIG. 1, the speed at which the long material W is transported by each of the drive roller conveyors 24 and 52 and the chain conveyor 72 is set to the same speed by inverter control. The transport mechanism of the shop primer line may be a structure not divided for the shot blasting apparatus, the coating apparatus and the drying apparatus.

  Further, in the above-described embodiment, the first projector 30 shown in FIG. 3 is based on the detection signal input from the distal end portion detection sensor 40 shown in FIG. 2 and the detection signal input from the proximity switch 44. The start and stop of the projection of the projection material by the second projector 32 and the third projector 34 are controlled, and such a configuration is preferable. For example, the first projector (30), the second projector ( 32) The configuration may be such that the start and stop of the projection of the projection material by the third projector (34) are made according to the operation of the operator.

  Further, in the above embodiment, the control device 26 shown in FIG. 2 is based on the detection signal inputted from the front end portion detection sensor 40 and the detection signal inputted from the proximity switch 66 shown in FIG. The start and stop of the coating on the material W are controlled, and such a configuration is preferable, for example, the start and stop of the coating on the long material W by the coating device 16 may be performed according to the operation of the operator It may be of any configuration.

  In addition, the said embodiment and the several modification mentioned above can be combined suitably and can be implemented.

  As mentioned above, although an example of the present invention was explained, the present invention is not limited to the above, and it is needless to say that it can be variously modified and carried out in the range which does not deviate from the main point besides it. .

DESCRIPTION OF SYMBOLS 10 shop primer line 12 conveyance mechanism 14 shot blasting apparatus 16 coating apparatus 18 drying apparatus 22 area 24 drive roller conveyor (conveyance mechanism for shot blasting apparatus)
24B drive roller 24B1 any one drive roller 26 control device (control unit)
28 fall prevention member 30 first projector 32 second projector 34 third projector 40 tip detection sensor 42 gear 42A tip 44 proximity switch 46 spray device 46A, 46B, 46C spray port 52 drive roller conveyor (for coating device Transport mechanism)
52B Drive roller 52B1 Any one drive roller 54 First spray nozzle 56 Second spray nozzle 58 Lateral movement mechanism 60 Lifting mechanism 62 Height detection sensor 64 Gear 66 Proximity switch 72 Chain conveyor (conveying mechanism for dryer)
72C chain 72D holder CL1 projection direction center line of CL1 first projector CL2 projection direction center line of CL2 third projector projection direction center line f1, f2, f3 gas spray direction W longi material Wa web Wf Flange Wf1 Flange web surface Wf2 Flange web opposite surface X Longitudinal material transport direction Y Transport width direction

Claims (10)

It is a shop primer line which makes a to-be-processed object the metal long paper which makes a section T-shape and has a flange at one end of the web,
A transport mechanism that transports the web material along the transport line with the web standing up and the flange facing down;
A shot blasting device provided on the transfer line for projecting a projection material onto the long material;
A coating apparatus provided on the conveying line and disposed on the conveyance downstream side with respect to the shot blasting apparatus for coating the long material;
A drying device provided in the transport line and disposed on the transport downstream side with respect to the coating device to dry the long material;
Have
The shot blasting apparatus
The projection material is provided on both sides of the conveyance line and projects the projection material toward the surface on the opposite web side of the flange in the long line material, and the projection direction center line is orthogonal to the conveyance direction of the long line material in plan view A first projector set along the direction,
The projection material is provided on both sides of the conveyance line and projects the projection material toward the web side surface of the web and the flange in the long line material, and the center line of the projection direction is in the conveyance direction of the long line material in plan view A second projector set along the orthogonal direction,
The projection material is provided on both sides of the conveyance line and disposed on the conveyance upstream side with respect to the second projector, and projects the projection material toward the web side surface of the web and the flange in the long material and the projection direction center A third projector set such that the line is inclined inward in the conveyance downstream direction toward the conveyance width direction in plan view,
Have a shop primer line.   The shot blasting apparatus is configured to be disposed above the web-side surface of the flange on the web downstream side of the second projection machine on both sides of the transport line than the second projector. The shop primer line according to claim 1, further comprising a spray device capable of blowing a gas toward the longitudinal material.   The shop primer line according to claim 2, wherein the blowing direction of the gas of the blowing device is set to be inclined toward the transport upstream side in the transport width direction in plan view and to the transport upstream side. The coating device is
A first spray nozzle for spraying paint toward the surface on the non-web side of the flange in the longitudinal member;
A lateral movement mechanism for moving the first spray nozzle in the conveyance width direction;
A second spray nozzle provided on both sides of the transport line and spraying paint toward the web side surface of the web and the flange of the long material;
An elevation mechanism for raising and lowering the second spray nozzle in the vertical direction of the apparatus;
A height detection sensor provided on the conveyance upstream side of the second spray nozzle and detecting the height of the long material in the conveyance state;
A control unit that adjusts an elevation range of the second spray nozzle by the elevation mechanism according to a detection result by the height detection sensor;
The shop primer line according to any one of claims 1 to 3, comprising:   It is set on both sides of the transfer line so as to be disposed close to the side of the web in the long line, and extends along the transfer direction of the long line and prevents the long line from falling down. The shop primer line according to any one of claims 1 to 4, wherein an anti-falling member is provided.   In the shot blasting apparatus, the falling prevention member is not disposed in the area where the long material is projected by the second projector and the third projector, and the upstream side and the downstream side of the area with respect to the area The shop primer line according to claim 5, which is provided separately. A chain conveyor as a carrying mechanism for a drying device, which is a part of the carrying mechanism and provided in a carrying line of the drying device,
An endless chain that is rotationally driven,
A plurality of receptacles fixed to the chain and supporting the longitudinal member in a line contact state;
The shop primer line according to any one of claims 1 to 6, comprising: The transport mechanism
A transport mechanism for a shot blasting device provided in a transport line of the shot blasting device;
A transport mechanism for a coating device provided on a transport line of the coating device;
A transport mechanism for the drying device provided in a transport line of the drying device;
Equipped with
The speed at which the long material is transported by each of the shot blasting device transport mechanism, the coating device transport mechanism, and the drying device transport mechanism is set to the same velocity by inverter control. The shop primer line according to any one of 7. A tip portion detection sensor provided on the loading side of the shot blasting device, detecting that the tip portion in the conveyance direction of the long material has passed, and outputting a detection signal;
A drive roller conveyor as a delivery mechanism for a shot blasting device, comprising a plurality of drive rollers that are part of the delivery mechanism and are provided on a delivery line of the shot blasting device and that can be rotationally driven;
A gear comprising a magnetic body coaxially fixed to the drive roller at an axial end of any one of the plurality of drive rollers;
A proximity switch disposed on an outer peripheral side of the gear and detecting proximity of a tooth tip of the gear when the gear rotates and outputting a detection signal;
The first projector, when the number of times the detection signal from the proximity switch is input after the detection signal from the leading end portion detection sensor reaches a first predetermined number set in advance. The control is performed to start the projection of the projection material by the second projector and the third projector, and the detection signal from the tip portion detection sensor is input, and then the detection signal from the proximity switch is input. The projection of the projection material by the first projector, the second projector and the third projector is stopped when the number of times reaches the second predetermined number of times set more than the first predetermined number of times Control device to control
The shop primer line according to any one of claims 1 to 8, comprising: A tip portion detection sensor provided on the loading side of the shot blasting device, detecting that the tip portion in the conveyance direction of the long material has passed, and outputting a detection signal;
A driving roller conveyer as a coating mechanism for a coating apparatus, comprising a plurality of drive rollers that constitute a part of the transport mechanism and are provided on a conveyance line of the coating apparatus;
A gear comprising a magnetic body coaxially fixed to the drive roller at an axial end of any one of the plurality of drive rollers;
A proximity switch disposed on an outer peripheral side of the gear and detecting proximity of a tooth tip of the gear when the gear rotates and outputting a detection signal;
After the detection signal from the front end portion detection sensor is input, when the number of times the detection signal from the proximity switch is input becomes a first predetermined number set in advance, the longitudinal material by the coating device Control to start painting on the surface, and after the detection signal from the tip detection sensor is input, the number of times the detection signal from the proximity switch is input is set more than the first predetermined number of times A control device that controls the coating device to stop painting on the long material when the second predetermined number of times is reached;
The shop primer line according to any one of claims 1 to 8, comprising: