JP5629342B2 - Rivet insertion device - Google Patents

Description

  The present invention relates to a rivet insertion device for inserting a rivet used in assembling a structure such as an aircraft into a predetermined hole.

  In a structure such as an aircraft, a large number of rivets are used to connect a rib-shaped frame and each member. The rivet is inserted into a hole that has been drilled in advance, and then the members are connected using a caulking machine such as a hammering device.

  Insertion of rivets into the holes is automated, and a chuck mechanism is provided at the tip of the tool with a rivet sent from the rivet supply side through the tube piping and sent by air or other air transport (hereinafter referred to as idle feed) And is inserted into the hole by a pressing mechanism such as a piston. (For example, Patent Document 1)

JP 2001-261154 A JP-A-10-109235

  The rivet sent by air feeding is gripped by the chuck mechanism of the tool, but it rarely occurs that the rivet is held by the chuck mechanism due to a change in the posture of the rivet during air feeding or causes clogging. . When it is twisted or clogged, the automatic operation is temporarily stopped and the tool is disassembled and the defective rivet is removed manually. In particular, when connecting large aircraft frames, the size of the rivet insertion device itself is several meters high, and once the rivet is twisted or clogged, the tool must be disassembled at a high place. This has led to a decrease in production efficiency.

  Patent Document 2 discloses a mechanism for mechanically opening a chuck claw and taking out a rivet that has been twisted. However, the mechanism is complicated and it is difficult to reduce the size of the rivet insertion portion. In particular, it is unsuitable for a rivet insertion machine used in a gap having a complicated shape with components such as an aircraft.

  Accordingly, an object of the present invention is to provide a rivet insertion device that can automatically remove a defective rivet even when a rivet is inserted or is clogged, and can be easily downsized and stably operated.

In order to solve the above problems, the invention described in claim 1
A rivet insertion device for inserting a rivet into a predetermined hole,
A chuck mechanism for gripping the rivet sent by the rivet transport device;
A cylinder mechanism for inserting the rivet gripped by the chuck mechanism into a predetermined hole;
A sensor that checks whether a rivet has been inserted into a predetermined hole;
A ring-shaped magnet that opens the chuck claws constituting the chuck mechanism and penetrates the chuck mechanism;
A suction means that is located to the side of the ring-shaped magnet and collects the rivets released from the chuck mechanism by opening the chuck claws ;
When the sensor detects a rivet insertion abnormality, the ring magnet has a function of opening a chuck claw and collecting the rivet by the suction means .

The invention according to claim 2 is a rivet insertion device for inserting a rivet into a predetermined hole,
A chuck mechanism for gripping the rivet sent by the rivet transport device;
A cylinder mechanism for inserting the rivet gripped by the chuck mechanism into a predetermined hole;
A ring-shaped magnet that opens the chuck claws constituting the chuck mechanism and penetrates the chuck mechanism;
In a rivet insertion device provided with suction means that is located on the side of the ring-shaped magnet and collects the rivet released from the chuck mechanism by opening the chuck claw ,
A rivet return prevention mechanism is provided between the chuck mechanism and the rivet entrance of the rivet insertion device, and the rivet return prevention mechanism slides in the rivet insertion device, thereby chucking the rivet sent from the rivet transport device. It is a rivet insertion device constituting the cylinder mechanism that positions the mechanism and inserts a rivet into a predetermined hole.

  According to the first aspect of the present invention, even when the rivet is twisted or clogged, the chuck claw is released by the chuck mechanism penetrating the ring magnet. Inside the opened chuck mechanism, rivets that have been twisted or clogged become free. In addition, defective rivets can be removed from the chuck mechanism. When the chuck mechanism is opened and closed, it is performed in a non-contact manner using a magnet without physically hitting an object, so that the mechanism can withstand continuous use and has a stable reproducibility.

  According to the second aspect of the present invention, the rivet gripped by the chuck mechanism is positioned in the chuck mechanism by the rivet return prevention mechanism sliding in the rivet insertion device, and is inserted into the predetermined hole. Therefore, the rivet held by the chuck mechanism is positioned and inserted into a predetermined hole without being returned to the supply side.

It is a schematic side view of the rivet insertion device according to the embodiment of the present invention. It is a schematic side view explaining a rivet insertion part. It is a schematic side view explaining operation | movement of a rivet insertion part. It is a schematic side view explaining operation | movement of a rivet insertion part. It is a schematic side view explaining a rivet discharge part. It is a schematic side view explaining operation | movement of a rivet discharge part. It is a flowchart explaining operation | movement of a rivet insertion apparatus.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic side view showing a rivet insertion device 1 of the present invention. In FIG. 1, the left-right direction toward the rivet insertion device 1 is the X axis, the front-rear direction is the Y axis, the axis orthogonal to the XY plane (horizontal plane) composed of the X axis and the Y axis is the Z axis (vertical direction), and the Z axis The circumference is the θ axis.

  The rivet insertion device 1 of the present invention is roughly composed of a device base 10, a rivet supply unit 20, a rivet insertion unit 30, and a rivet discharge unit 50, and rivets are inserted into predetermined holes of a frame such as an aircraft as a target workpiece 60. 2 is inserted. The target workpiece 60 is indicated by a hatched rectangle. The apparatus base 1 indicates the boundary line with diagonal lines and shows only a part of the main body.

  A vertical bracket of the apparatus base 10 shown in FIG. 1 is provided with a slide bracket 11 that can move in the vertical direction. The slide bracket 11 is substantially L-shaped, and a linear guide 13 that is fitted to a rail 12 provided on the apparatus base 10 is attached to the vertical surface side so that the slide bracket 11 can move up and down. Moreover, the rail 14 is attached to the horizontal surface side of the slide bracket 11, the rail 14 and the linear guide 15 by the side of the bracket 16 are fitted, and it is comprised so that the bracket 16 can move horizontally. A rivet insertion portion 30 is attached to the lower end portion of the bracket 16. With the above configuration, the rivet insertion portion 30 is movable in the vertical direction and the horizontal direction.

  The rivet insertion part 30 is connected to the rivet supply part 20 via a rivet supply pipe 31, and the rivet 2 is fed by air inside the rivet supply pipe 31. The rivet supply unit 20 is disposed on the side of the apparatus base 10 and stores a predetermined amount of rivets 2.

  The rivet discharging unit 50 is disposed in the vicinity of the descending end of the rail 12 provided on the apparatus base 10 and is attached in the horizontal direction.

  In FIG. 2, the schematic side view of the rivet insertion part 30 is shown. The rivet insertion portion 30 includes a first insert nozzle 32 connected to the rivet supply pipe 31 and a second insert nozzle 33 attached to the first insert nozzle 32 at a right angle. The first insert nozzle 32 and the second insert nozzle 33 are formed with through holes so that the rivet 2 can pass therethrough. The rivet 2 that has been pneumatically conveyed passes through the first insert nozzle 32 and is conveyed to the second insert nozzle 33. In FIG. 2, the moving direction of the rivet 2 is indicated by an arrow, and the through hole is indicated by a dotted line. A chuck cylinder 40 is attached to the rivet outlet side of the through hole of the second insert nozzle 33. A cylinder 34 is vertically attached to the outside of the second insert nozzle 33, and a support plate 37 is attached to the other end of the piston rod 35 of the cylinder 34. The support plate 37 is supported by upper and lower piston rods 35. Two rods 39 extending in the direction of the chuck cylinder 40 are supported on the support plate 37 by a fulcrum 38 and attached to the support plate 37. The cylinder 34, the piston rod 35, the support plate 37, and the rod 39 constitute an anti-back mechanism 36. The anti-back mechanism 36 corresponds to the rivet return prevention mechanism of the present invention. The anti-back mechanism 36 pushes the bar 39 as shown in FIG. 3 and sends it to the tip of the chuck cylinder 40 to position the rivet 2 at the center of the chuck cylinder 40 as shown in FIG. It is a mechanism to do. In FIG. 3, the operation direction when the rod 36 is pushed away is indicated by an arrow. A chuck claw 41 is fixed to the outer periphery of the tip of the chuck cylinder 40 by a plurality of O-rings 42. The chuck cylinder 40, the chuck pawl 41, and the O-ring 42 constitute the chuck mechanism of the present invention. The chuck claw 41 can be opened and closed around the fulcrum 43. As shown in FIG. 4, the rivet 2 centered by the anti-back mechanism 36 has a piston rod 35 extended by a sliding movement of the cylinder 34, and a rod 39 moved together with the support plate 37. It is opened and inserted into a predetermined hole. These mechanisms correspond to the cylinder mechanism of the present invention.

  FIG. 5 shows a schematic side view of the rivet discharging unit 50. The rivet discharging unit 50 includes a bracket 51 attached to the apparatus base 1, a neodymium magnet 53 disposed on the outer periphery of a hole 52 provided in the bracket 51, and a plate 54 that fixes the neodymium magnet 53. Yes. The form in which the neodymium magnet 53 is disposed on the outer periphery of the hole 52 corresponds to the ring-shaped magnet of the present invention. A plurality of neodymium magnets 53 are arranged on the outer periphery of the hole 52. Instead of the neodymium magnet 53, an electromagnet may be used. A resin cylinder 55 penetrating to the plate 54 is attached to the hole 52. The resin cylinder 55 is provided in order to prevent the later-described chuck claw 41 from being damaged or excessively opened. A suction means 56 is disposed on the side of the bracket 51 and connected to a suction pump (not shown). When the rivet 2 is clogged or twisted by the chuck cylinder 40 of the rivet insertion section 30 and a rivet insertion abnormality is detected, the rivet insertion section 30 moves to the rivet discharge section 50, and as shown in FIG. 40 is inserted into the hole 52 of the rivet discharging portion 50. The chuck claw 41 disposed on the outer periphery of the chuck cylinder 40 is opened around the fulcrum 43 by the magnetic force of the neodymium magnet 53. The rivet 2 that has been clogged or twisted by the rivet cylinder 40 is opened, and is sucked and collected by the suction means 56. In this way, the rivet 2 in which a failure has occurred can be automatically collected with a simple mechanism without contact. Further, since the chuck pawl 41 is in an open state, the rivet 2 can be discharged even with a weak external force such as suction air.

  Next, operation | movement of the rivet insertion apparatus 1 of this invention is demonstrated using the flowchart of FIG.

  First, the rivet 2 is idle-fed from the rivet supply unit 20 to the rivet insertion unit 30. The rivet 2 supplied to the rivet insertion portion 30 pushes the anti-back mechanism 36 and is positioned on the chuck cylinder 40 (step ST01).

  Next, the rivet insertion part 30 moves in the vertical direction and the horizontal direction, and moves forward in the vicinity of a predetermined hole of the workpiece 60 (step ST02).

  Next, the rivet insertion part 30 approaches the predetermined hole of the workpiece 60 (step ST03), the anti-back mechanism 36 is advanced to the workpiece 60 side, and the rivet 2 is inserted into the predetermined hole (step ST04).

  Next, it is confirmed whether the rivet 2 has been inserted into a predetermined hole (step ST05). The confirmation is performed by a sensor provided in the rivet insertion portion 30. When the rivet 2 is normally inserted, it moves to the next rivet insertion position and supplies a new rivet 2 from the rivet supply unit 20 (step ST06).

  If there is a problem with the insertion of the rivet 2, the rivet insertion part 30 is moved to the rivet discharge part 50 (step ST07). Then, the chuck cylinder 40 of the rivet insertion part 30 is inserted into the rivet discharge part 50, the chuck claws 41 are released by the magnetic force of the neodymium magnet 53, and the defective rivet 2 is released. The defective rivet 2 is sucked and collected by the suction means 56 of the rivet discharging unit 50 (step ST08).

  Next, returning to step ST01, the operation of inserting the rivet 2 into the next insertion hole is continued.

1 Rivet Insertion Device 2 Rivet 10 Device Base 11 Slide Bracket 12 Rail 13 Linear Guide 14 Rail 15 Linear Guide 16 Bracket 20 Rivet Supply Part 30 Rivet Insertion Part 31 Rivet Supply Pipe 32 First Insert Nozzle 33 Second Insert Nozzle 34 Cylinder 35 Piston rod 36 Anti-back mechanism 37 Support plate 38 Support point 39 Rod 40 Chuck cylinder 41 Chuck claw 42 O-ring 43 Support point 50 Rivet discharge part 51 Bracket 52 Hole 53 Neodymium magnet 54 Plate 55 Resin cylinder 56 Suction means 60 Workpiece

Claims (2)

A rivet insertion device for inserting a rivet into a predetermined hole,
A chuck mechanism for gripping the rivet sent by the rivet transport device;
A cylinder mechanism for inserting the rivet gripped by the chuck mechanism into a predetermined hole;
A sensor that checks whether a rivet has been inserted into a predetermined hole;
A ring-shaped magnet that opens the chuck claws constituting the chuck mechanism and penetrates the chuck mechanism;
A suction means that is located to the side of the ring-shaped magnet and collects the rivets released from the chuck mechanism by opening the chuck claws ;
When the sensor detects a rivet insertion abnormality, the rivet insertion device has a function in which the ring magnet opens the chuck pawl and collects the rivet by the suction means . A rivet insertion device for inserting a rivet into a predetermined hole,
A chuck mechanism for gripping the rivet sent by the rivet transport device;
A cylinder mechanism for inserting the rivet gripped by the chuck mechanism into a predetermined hole;
A ring-shaped magnet that opens the chuck claws constituting the chuck mechanism and penetrates the chuck mechanism;
In a rivet insertion device provided with suction means that is located on the side of the ring-shaped magnet and collects the rivet released from the chuck mechanism by opening the chuck claw ,
A rivet return prevention mechanism is provided between the chuck mechanism and the rivet entrance of the rivet insertion device, and the rivet return prevention mechanism slides in the rivet insertion device, thereby chucking the rivet sent from the rivet transport device. A rivet insertion device constituting the cylinder mechanism for positioning the mechanism and inserting a rivet into a predetermined hole.

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