JP3198869B2 - Bolt and nut feeder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bolt and nut feeder for storing a bolt and a nut used for fastening a segment in a shield method and sending the bolt and a nut to a fastening device. It relates to the efficiency of supply.

[0002]

2. Description of the Related Art The shield method is a method of constructing a tunnel by assembling segments while propelling a shield having a diameter slightly larger than the inner diameter of the tunnel into the ground. In this shield method, a plurality of bolts and nuts are used to connect an existing segment to a newly installed segment held by an elector device. When connecting an existing segment and a newly installed segment in this way, variations in the shape of each segment and variations in the positions of the bolt holes occur due to the deflection of the segment due to earth pressure and the like. Therefore, conventionally, bolts and nuts have been manually attached to the segments and tightened.

[0003] However, the work of mounting and tightening the bolts and nuts with the segment held by the elector device set at a predetermined position has a problem in terms of safety because it is a heavy work in a high place and a narrow place. A fastening device for automatically fastening a bolt and a nut to a segment in order to solve such an operation having a problem on safety is disclosed in, for example, Japanese Utility Model Laid-Open No. 2-47300 and Japanese Patent Laid-Open No. 4-194197. I have.

As shown in the front view of FIG. 8 and the side view of FIG. 9, a fastening device disclosed in Japanese Utility Model Laid-Open Publication No. 2-47300 discloses a bolt arm 151 having a bolt fixing device and a nut arm having a nut rotating device. And a cartridge 153 that houses bolts and nuts. Bolt arm 1
51 and the nut arm 152 are supported by a vertically movable motor 154 so as to be able to reciprocate up and down and a cylinder 155 so that the distance between them can be adjusted. The cartridge 153 is a rising end of the bolt arm 151 and the nut arm 152.
In addition, the bolt arm 151 and the nut arm 152 are provided at an intermediate position between the bolt arm 151 and the nut arm 152 at the initial position where the bolt arm 151 and the nut arm 152 are retracted by the cylinder 155, and are provided orthogonal to the vertical direction of the bolt arm 151 and the nut arm 152. The cartridge 153 is a cylinder 156
As shown in FIG. 9, the bolt arm 151 and the nut arm 1 can be advanced to an intermediate position between the initial positions of the bolt arm 151 and the nut arm 152.
When the cartridge 52 is at the initial position, the cartridge 153 is advanced by the cylinder 156, and the bolt 101 is connected to the bolt fixing device of the bolt arm 151 by the bolt pushing member 158 connected to the bolt pushing cylinder 157 provided at the tip. The nut 102 is pushed into the nut 102 by a nut pushing member 161 connected to a nut pushing cylinder 160 which advances in the opposite direction to the bolt pushing cylinder 157.
2 is pushed into the nut rotating device.

A stocker-1 of a bolt and nut supply device of a fastening device disclosed in Japanese Patent Application Laid-Open No. 4-194197 and the like.
As shown in the top view of FIG. 10, 71 is made of a pair of plate members supported at a predetermined interval and opposed to the support plate 172, and the head of the bolt 101 is inserted into one of the opposed surfaces. A plurality of holding holes 173 are provided, and a plurality of holding holes 174 for inserting the nut 102 are provided on the other facing surface, and a permanent magnet 175 is fixed to the inner surface of each holding hole 173, 174. Each of the holding holes 173 and 174 has a bolt 10
1 and the nut 102 are inserted and stored. Then, as shown in the side view of FIG.
A pair of support arms 179a, 179b connected to ball screws 177a, 177b rotating at 6b and having electromagnets 178a, 178b at the ends are provided in the stocker 17.
1 by the moving mechanism 180 to move the drive motor 17
6a, 176b to rotate the support arms 179a, 179
b in the direction of the facing surface of the stocker-171, and the electromagnet 1
The bolts 101 and the nuts 102 stored in the stocker-171 are attracted and excited one by one by energizing 78a and 178b. Thereafter, as shown in FIG. 12, the supporting arms 179a and 179b are connected to the bolt arm 151 and the nut arm.
The arm 101 is moved to the position of the arm 152, and the bolt 101 and the nut 102 held are moved to the bolt arm 151 and the nut arm 15.
2, the excitation of the electromagnets 178a, 178b is cut off, and the bolt 101 and the nut 102 are mounted on the bolt arm 151 and the nut arm 152.

[0006]

In any of the above fastening devices, when the bolt and the nut are mounted on the bolt fixing device of the bolt arm and the nut rotating device of the nut arm, the car housing the bolt and the nut is mounted. A moving mechanism is required to move the cartridge and the supporting arm for transferring the bolts and nuts stored in the stocker to the bolt arm and the nut arm. A large space had to be provided for moving the moving mechanism in between. Also, move the bolt or nut in a direction perpendicular to the vertical direction of the bolt arm and nut arm.
It was necessary to arrange them in a row, and a space for this was also required. For this reason, the space occupied by the entire fastening device is
When used in a narrow work space, it is difficult to arrange a plurality of fastening devices in parallel for simultaneous fastening, and there is a disadvantage that work efficiency is reduced.

In addition, there are many moving operation steps when mounting the bolts and nuts on the bolt arm and the nut arm, so that the operation time of the moving mechanism becomes long, and it takes a lot of time to assemble the segments. There were also disadvantages.

SUMMARY OF THE INVENTION The present invention has been made to solve such a disadvantage, and the occupation space is reduced by minimizing a moving operation process when supplying a bolt and a nut to a bolt arm and a nut arm. It is another object of the present invention to provide a bolt and nut supply device that can automatically supply bolts and nuts in order.

[0009]

According to the present invention, there is provided a bolt and a bolt.
The nut supply device has a cartridge and a dispensing device,
The cartridge has a cartridge body, an upper movable stopper, a lower stopper, and a fixed rod, and the cartridge body is configured to stack and store a plurality of laterally mounted bolts or nuts, and a bolt is provided at an upper end portion. Or, it has a supply port for a nut, has a discharge port for a bolt or nut at the lower end, has a guide groove that opens vertically from the supply port to the discharge port in the center of the side, and has an outer periphery of the head of the bolt. A guide portion fitted to the outer surface of the surface or the nut, a fixing pin provided on either one of the upper end surface or the lower end surface, and provided at a position corresponding to the fixing pin on the other surface of the upper end surface or the lower end surface. The upper movable stopper has a locking portion at its tip for engaging with the screw portion of the bolt or the outer peripheral surface of the nut, and is provided near the supply port of the cartridge body, and is provided with a guide groove by a spring. Biased to the side, bottom The stopper has a locking portion at the tip for engaging with the screw portion of the bolt or the outer peripheral surface of the nut, and is rotatable in a direction opposite to the upper movable stopper with respect to the guide portion near the discharge port of the cartridge body. The fixed rod is formed to be slightly shorter than the entire length of the cartridge body, has a cam at the lower end engaged with the lower stopper, is urged upward by a compression spring, and is provided along the guide portion, The dispensing device has a cartridge holding part, a lock mechanism part, a feeding mechanism part and a discharging mechanism part, and the cartridge holding part is a horizontal frame provided at a lower part and an upper part of a vertically extending support frame. One or more of the cartridges are vertically held by a frame, and an insertion hole or a fixing hole of the cartridge body is provided in the lower and upper horizontal frames to be fitted to a fixing pin of the cartridge body. With an insertion pin that fits into the lower part The horizontal frame has a bolt or nut payout port, the lock mechanism is attached to the upper horizontal frame, and has an operating rod that pushes down the fixed rod, and a drive unit that pushes down the operating rod, The feed mechanism applies a feed force to a feed motor attached to the support frame, an elevating device that moves up and down by rotation of the feed motor, and a bolt or nut housed in the cartridge by lowering the elevating device. The discharge mechanism has a stopper traversably provided at a connecting portion between the lower horizontal frame payout port and the loading device, and a discharge cylinder for driving the stopper. It is characterized by having.

[0010]

In the present invention, when a bolt or nut is loaded from the supply port of the cartridge body, the upper movable stopper provided near the supply port of the cartridge body pushes the inserted bolt or nut. As a result, the bolt or the nut can be easily loaded.

When the bolt or the nut passes through the position of the upper movable stopper, the upper movable stopper pivots upward and returns to the initial position, thereby preventing the loaded bolt or nut from dropping out of the supply port.

In the lower stopper in the cartridge body, the guide shaft is pushed by the fixed rod, and the locking portion at the tip end is provided with the carriage.
The initial position is determined so as to be in the guide groove of the cartridge body, thereby preventing the bolts and nuts loaded in the cartridge body from dropping out of the lower outlet.

When the cartridge is mounted on the dispensing device, the cartridge is positioned on the cartridge holding portion by a fixing hole provided on the lower end of the cartridge body and a fixing pin provided on the upper end of the cartridge body, and then the lock mechanism is mounted. The fixing rod of the cartridge body is pushed down by the operating rod, and the cartridge is fixed to the cartridge holding portion by the operating rod and the fixing rod.

When the fixing rod of the cartridge body is pushed down, the fixing of the bolt or the nut by the lower stopper engaged with the fixing rod is released, and the bolt or the nut is stored in a state capable of being supplied to the loading device. I do.

When a bolt or a nut is supplied to the loading device, a constant feed force is applied to the bolt or the nut held by the cartridge holding portion by a feed mechanism portion.
By simply opening and closing a stopper provided at the connection with the loading device, bolts or nuts are sequentially supplied.

[0016]

FIG. 1 is a front view showing a bolt and nut supply device according to an embodiment of the present invention. As shown in the drawing, the supply device 1 has a cartridge 2 for storing a bolt 101 or a nut 102 and a dispensing device 3. Cartridge 2
2. A bolt cartridge 2a shown in a front sectional view of FIG.
And a nut cartridge 2b shown in a front sectional view of FIG. As shown in FIGS. 2 and 3, the cartridge 2a for the bolt and the cartridge 2b for the nut are all provided with the cartridge body 21, the upper movable stopper 22, and the lower stopper 2.
3 and a fixed rod 24. Cartridge body 2
Reference numeral 1 denotes a stack of a plurality of horizontal bolts 101 or nuts 102, which is formed of a vertically long casing.
The supply port 25 for the bolt 101 or the nut 102 is provided at the upper end.
Is provided, and a bolt 101 or a nut 10 is provided at the lower end.
Two outlets 26 are provided. Cartridge body 2
1 has a guide groove 27 vertically opened from the supply port 25 to the discharge port 26 at the center of one side surface. As shown in a plan sectional view of the bolt cartridge 2a of FIG. 4 and a plan sectional view of the nut cartridge 2b of FIG.
2 has a guide surface 27a fitted to the outer peripheral surface. A fixing pin 28 protruding in the vertical direction is provided on the upper end face of the cartridge body 21, and a fixing hole 29 is provided at a position corresponding to the fixing pin 28 on the lower end face.

The upper movable stopper 22 has a bolt 10
1 has a locking portion 22a which engages with the outer peripheral surface of the nut or nut 102, and is rotatably mounted on one side, for example, the left side of the guide groove 27 near the supply port 25 of the cartridge body 21. Torsion spring 31a or coil spring 31b
To the guide groove 27 side. The lower stopper 23 has a locking portion 23a at the tip for engaging with the threaded portion of the bolt 101 or the outer peripheral surface of the nut 102, and a guide groove 27 is formed near the discharge port 26 of the cartridge body 21 with the upper movable stopper 22. It is mounted on the opposite side to be rotatable in a direction orthogonal to the guide groove 27. A guide shaft 23c is provided between the locking portion 23a at the tip of the lower stopper 23 and the rotation shaft 23b. The fixing rod 24 is a car
It is formed to be slightly shorter than the entire length of the cartridge body 21, and has a cam groove 24 a at the lower end for engaging with the guide shaft 23 c of the lower stopper 23, and is provided along the guide groove 27 by being urged upward by the compression spring 32. Have been. Cartridge body 2
1 has a guide hole 33 provided coaxially with the fixed rod 24 on the upper end surface and the lower end surface.

The dispensing device 3 has a cartridge holder 4, a lock mechanism 5, a feed mechanism 6, and a discharge mechanism 7. The cartridge holding part 4 has a vertically extending support frame 8.
The upper horizontal frame 41 and the lower horizontal frame 42 provided at the lower and upper portions of the above-described embodiment vertically hold and hold a plurality of the bolt cartridges 2a or the nut cartridges 2b. As shown in the side view of FIG. 6, the upper horizontal frame 41 has a positioning hole 43 for fitting to the fixing pin 29 at the upper end of the cartridge body 21, and the lower horizontal frame 42 has the positioning body 43. Positioning pins 44 and bolts 101 or nuts 1 fitted in the fixing holes 30 at the lower end
A lock hole 46 is provided at a position corresponding to the payout port 45 and the fixed rod 24 in the cartridge body 21.

The lock mechanism 5 is attached to the upper horizontal frame 41 and has a fixed rod 2 in the cartridge body 21.
4 has an operating rod 51 for pushing down the operating rod 51 and a driving unit 52 composed of, for example, an electromagnetic solenoid or a motor and a gear group for pushing down the operating rod 51. The feed mechanism 6 includes a feed motor 61 mounted on the upper part of the support frame 8, a sprocket 63 connected to the feed motor 61, a sprocket 64 mounted on the lower part of the support frame 8, and Chain wound around sprocket 63 and sprocket 64
And a bolt 101 housed in the cartridges 2a and 2b by the lowering of the elevator 62.
Or a feed arm 66 for applying a feed force to the nut 102. As shown in FIG. 7, the discharging mechanism 7 is connected to the discharging port 71 of the lower horizontal frame 42 and the discharging cylinder 71 provided at the connecting portion of the loading device 9, and the discharging port 71 is connected to the discharging cylinder 71. And a stopper 72 that opens and closes. The loading device 9 connected to the payout port 45 has a gripping mechanism 92 that is opened and closed by a gripping cylinder 91.

Next, the supply device 1 configured as described above
The operation when the bolt 101 or the nut 102 is stored and supplied to the loading device 9 will be described.

The bolt cartridge 2a and the nut cartridge 2a
In a state where the cartridge 2b is detached from the dispensing device 3, FIG.
As shown in FIG. 3, the bolt 10 is supplied from the supply port 25 on the upper side of the cartridge 2a for the bolt and the cartridge 2b for the nut.
1 and the nut 102 are inserted along the guide surface 27a. Thus, the bolt 101 and the nut 102 are connected to the bolt cartridge 2a and the nut cartridge 2b.
When the cartridge is inserted into the cartridge body 21,
Since the upper movable stopper 22 provided in the vicinity rotates downward by the force of pushing the inserted bolt 101 or nut 102, the bolt 101 or nut 102 can be easily loaded. Bolt 101 or nut 102
The upper movable stopper 22 pivots upward to return to the initial position when it passes through the position of the upper movable stopper 22, and prevents the loaded bolt 101 or nut 102 from dropping out of the supply port 25. The initial position of the lower stopper 23 in the cartridge body 21 is determined so that the guide shaft 23 is pushed by the fixing rod 24 and the locking portion 23a at the tip is in the guide groove 27. The bolt 101 and the nut 102 loaded in the cartridge body 21 are connected to the lower outlet 2.
6 can be prevented from falling off. Therefore, the bolts 101 and the nuts 102 can be loaded and stored in the cartridge body 21 in advance, and the work in a narrow working environment can be reduced. Thus, a predetermined number of bolts 101 and nuts 102 are cared.
After the cartridge 2 is loaded into the cartridge body 21, the cartridge 2a for bolts and the cartridge 2b for nuts are attached to the dispensing device 3.

When a plurality of, for example, two bolt cartridges 2a are mounted on the dispensing device 3, the lower arm of the feed mechanism 6 is arranged with the feed arm 66 of the feed mechanism 6 at the uppermost position. -The fixing hole 30 provided in the lower end of the cartridge body 21 is inserted into the positioning pin 44 provided in the lower horizontal frame 42 of the cartridge holding part 4, and the upper cartridge body 2 is inserted.
The fixing pin 29 provided at the upper end of the upper horizontal frame 4
The lower horizontal frame 42 is inserted into the positioning hole 43 of the first cartridge body 21 and the fixing pin 29 provided at the upper end of the lower cartridge body 21 is inserted into the fixing hole 30 at the lower end of the upper cartridge body 21. The two cartridge bodies 21 are set up vertically between the upper horizontal frame 41 and the upper horizontal frame 41. Thereafter, the drive unit 52 of the lock mechanism unit 5 is driven to push down the operation rod 51 and insert it through the upper guide hole 33 of the upper cartridge body 21 to push down the fixed rod 24. The fixed rod 24 of the lower cartridge body 21 is pushed down by the fixed rod 24 of the upper cartridge body 21 which is pushed down, so that the leading end portion is a lock hole 46 of the lower horizontal frame 42.
And the upper and lower cartridge main bodies 21 are fixed to the cartridge holder 4.

When the fixing rod 24 of the cartridge body 21 is pushed down in this manner, the guide shaft 23c of the lower stopper 23 engaged with the fixing rod 24 falls into the cam groove 24a of the fixing rod 24, and the The fixing is released, and the bolt 101 is stored in a state where it can be supplied to the loading device 9.

When the bolt 101 is supplied to the loading device 9, the feed motor 61 of the feed mechanism 6 is driven to move the feed arm 66 to the guide groove 27 of the cartridge body 21.
To apply a constant force to the uppermost bolt 101. Then, the stopper 72 is opened and closed by the discharge cylinder 71 of the discharge mechanism unit 7 and the bolt 1 in the cartridge body 21 is opened and closed.
01 are supplied to the loading device 9 one by one. Each time the bolt 101 is supplied, the loading device 9 drives the gripping cylinder 91 to grip the supplied bolt 101 by the gripping mechanism 92.

While applying a constant feed force to the bolts 101 held by the cartridge holding unit 4 by the feed mechanism unit 6, the bolts 101 are sequentially supplied only by opening and closing the stopper 72 of the discharge mechanism unit 7. Can bolt 1
01 can be efficiently supplied in a short time.

In the above embodiment, the case where the bolt 101 is supplied to the loading device 9 has been described. However, the nut 102 can be supplied to the loading device in the same manner.

[0027]

As described above, according to the present invention, when a bolt or a nut is loaded from the supply port of the cartridge body, the upper movable stopper provided near the supply port of the cartridge body is inserted. Since the bolt or the nut is rotated downward by the force of pushing the bolt or the nut, the bolt or the nut can be easily loaded in a short time.

When the bolt or nut passes the position of the upper movable stopper, the upper movable stopper pivots upward and returns to the initial position, preventing the loaded bolt or nut from dropping out of the supply port, and preventing the loaded bolt or nut from falling off the supply port. Car
Since the bolts and nuts loaded in the cartridge body are prevented from dropping out of the lower outlet, the bolts and nuts can be loaded and stored in the cartridge body in advance, making it possible to work in a narrow work environment. Can be reduced,
Work efficiency can be improved.

When the cartridge is mounted on the dispensing device, the cartridge is positioned on the cartridge holding portion with the fixing holes provided at the lower end of the cartridge body and the fixing pins provided at the upper end thereof, and then the lock mechanism is moved. The operating rod pushes down the fixing rod of the cartridge body, and the operating rod and the fixing rod fix the cartridge to the cartridge holder.
The cartridge can be easily and reliably mounted on the dispensing device.

When the fixing rod of the cartridge body is pushed down, the fixing of the bolt or nut by the lower stopper engaged with the fixing rod is released, and the bolt or nut can be supplied to the loading device. Can be stored at

When a bolt or a nut is supplied to the loading device, a constant feeding force is applied to the bolt or the nut held by the cartridge holding portion by a feeding mechanism.
Just by opening and closing the stopper provided at the connection with the loading device, bolts can be supplied sequentially,
The nut can be supplied in a short time.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a front sectional view of a cartridge for a bolt.

FIG. 3 is a front sectional view of a nut cartridge.

FIG. 4 is a top sectional view of a bolt cartridge.

FIG. 5 is a top sectional view of a cartridge for a nut.

FIG. 6 is a side view of the dispensing device.

FIG. 7 is a configuration diagram illustrating a discharge mechanism unit.

FIG. 8 is a front view showing a conventional example.

FIG. 9 is a side view of the conventional example.

FIG. 10 is a top sectional view showing a second conventional example.

FIG. 11 is a side view showing a holding operation of a bolt and a nut according to a second conventional example.

FIG. 12 is a side view showing a mounting operation of a bolt and a nut according to a second conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Supply apparatus 2 Cartridge 3 Discharge apparatus 4 Cartridge holding part 5 Lock mechanism part 6 Feeding mechanism part 7 Ejection mechanism part 9 Loading device

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Kenichi Murano 1-1-2 Marunouchi, Chiyoda-ku, Tokyo Nippon Kokan Co., Ltd. (56) References JP-A-4-25328 (JP, A) JP-A-4 -176527 (JP, A) JP-A-5-261632 (JP, A) JP-A-4-194198 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) E21D 11/40

Claims (1)

(57) [Claims] A cartridge having a cartridge body, an upper movable stopper, a lower stopper, and a fixed rod; and a cartridge body having a plurality of lateral bolts. Or the nuts are stacked and stored.The upper end has a bolt or nut supply port, the lower end has a bolt or nut discharge port, and the center of the side has a supply port to a discharge port. A guide groove having a guide groove opened in the vertical direction, a guide portion fitted to the outer peripheral surface of the head of the bolt or the outer peripheral surface of the nut, a fixing pin provided on one of the upper end surface or the lower end surface, and an upper end surface or A fixing hole provided at a position corresponding to the fixing pin on the other surface of the lower end surface, the upper movable stopper has a locking portion for engaging with a screw portion of a bolt or an outer peripheral surface of a nut at a tip, Near the supply port of the cartridge body And the lower stopper is provided at its tip with a locking portion for engaging with the screw portion of the bolt or the outer peripheral surface of the nut, and the guide portion near the discharge port of the cartridge body. The fixed rod is formed so as to be rotatable on the opposite side to the upper movable stopper, the fixed rod is formed slightly shorter than the entire length of the cartridge body, and has a cam at the lower end which engages with the lower stopper.
The dispensing device is provided along the guide portion by being urged upward by a compression spring, and has a cartridge holding portion, a lock mechanism portion, a feed mechanism portion, and a discharge mechanism portion, and the cartridge holding portion is in a vertical direction. One or more of the above-mentioned cartridges are vertically held by horizontal frames provided at the lower part and the upper part of the supporting frame extending to the lower part and the upper part of the supporting frame. It has an insertion hole that fits into the fixing pin of the main body or an insertion pin that fits into the fixing hole of the cartridge body, the lower horizontal frame has an outlet for bolts or nuts, and the lock mechanism is An operation rod attached to the upper horizontal frame and having an operation rod for pushing down the fixed rod, and a drive unit for pushing down the operation rod, the feed mechanism is provided with a feed motor attached to the support frame and a feed motor. -Lifting up and down by rotating the data And a feeding arm for applying a feeding force to a bolt or a nut housed in the cartridge by lowering the elevating device. The discharging mechanism has a lower horizontal frame payout port and a loading device. A stopper provided so as to be able to traverse freely at the connection part with
A bolt / nut supply device, comprising: a discharge cylinder for driving a stopper.