JPH0711235U - Posture setting device for screw parts - Google Patents

Abstract

(57) [Abstract] [Purpose] Automatically set the rotation angle around the axis of the screw part, in which the washer with the outer diameter larger than the maximum outer diameter of the nut is fixed to one end face of the hexagonal nut, that is, the posture To be able to do. [Structure] A leaf spring is fixed to a piston rod of a double-acting cylinder, a swing member is connected to the cylinder, and the cylinder is contracted so that the leaf spring is in contact with one engaging portion of the nut with washer. , The roller at the free end of the rocking member comes into contact with the other engaging portion, whereby the angle around the axis of the nut with washer is set.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a screw component attitude setting device for adjusting the angle around the axis of a screw component such as a nut or a washer fixed to one end face, and a bolt. The present invention relates to a screw component attitude setting device that can be suitably implemented in connection with a nut / washer supply device for supplying a nut / washer to a bolt / nut automatic fastener in a segment assembly device for lining .

[0002]

[Prior art]

 Conventionally, when excavating a tunnel with a shield excavator, the ring-shaped inner peripheral surface of the pit behind the shield excavator is covered with a plurality of bent segments made of reinforced concrete every time the tunnel is excavated for a predetermined length. However, the segment automatic assembly device that connects the above-mentioned segments one by one to the inner circumferential surface of the mine and connects the segments to the existing ones has multiple segments. An automatic bolt and nut fastening machine for fastening bolts is provided.

Recently, with the increase in size of the shield, there has been a demand for larger bolts, higher tightening torque, higher speed of automatic bolt fastening, and the like. It is required to speed up the nut / washer supply device that supplies the nut / washer to the automatic fastening device.

As the nut supply device, Japanese Utility Model Laid-Open No. 3-82125 discloses a pair of left and right loading cylinders having hexagonal loading holes for loading a plurality of nuts in series, in the axial direction. The nut supply openings are movably arranged so as to face each other and face each other, and one nut is inserted into the opening of each loading cylinder when an external socket is inserted into the opening. A mechanism to supply only the socket to the socket, and an extruding rod for pushing multiple nuts in the loading cylinder on the other side to each loading cylinder, and the fixed side socket of the feed arm of the bolt / nut automatic fastener While pressing the drive-side socket of the fastening arm against the opening of the other loading cylinder while pressing both arms toward the opening of one of the loading cylinders. Supply nuts A nut feeding device configured as described above is described.

In such a prior art, the nut is inserted into the loading cylinder, and therefore the nut supplied from the loading cylinder is adjusted in angle around the axis of the nut, that is, the posture is set. ing. When such a nut is used in place of a threaded component in which a large-diameter washer protruding radially outward from the nut is fixed to the end surface of the nut, such a prior art is used as it is. It is not possible.

[0006]

[Problems to be solved by the device]

 The purpose of the present invention is to allow a threaded component, in which a washer having a diameter larger than that of the nut is fixed to one end face of the nut, to be set in a desired posture by adjusting the angle around its axis. It is to provide a posture setting device for the screw parts.

[0007]

[Means for Solving the Problems]

 According to the present invention, an abutting member that is in contact with one of a plurality of engaging portions of a screw component having a polygonal cross-section perpendicular to the axis and is elastic and that is disposed on the opposite side of the abutting member with respect to the screw member, The swing end is provided so as to be swingable about a swing axis parallel to the axis of the screw member, and the free end portion includes a swing member located closer to the screw member than the swing axis, and an abutting member and a swing member. An attitude setting device for a screw component, comprising: a driving means that reciprocally drives in a mutually approaching direction and a reciprocating direction.

In the present invention, the driving means may have a structure in which one of a cylinder and a piston rod is connected to the abutting member and the other is connected to the swinging member. It is a feature.

[0009]

[Action]

 According to the present invention, when the contact member and the swinging member are separated from each other by the driving member, the screw components can be sequentially moved and supplied between them, and the posture of the screw components is set. In this case, the driving member displaces the contact member and the swinging member in the direction of approaching each other. As a result, a contact member such as a leaf spring comes into contact with one of the engaging portions such as nuts of the screw part, and the free end of the swinging member comes into angular contact with the other engaging portion. As a result, for example, a nut having a large-diameter washer fixed to one end surface can be angularly displaced around the axis of the nut to have a desired posture.

Further, according to the invention, the drive means includes a double-acting cylinder, which can be realized with a simple structure.

[0011]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings.

In this embodiment, the present invention is applied to a nut / washer supply device for supplying a nut and a washer to a bolt / nut automatic fastener of an automatic segment assembly device provided as an accessory equipment of a shield excavator for excavating a tunnel. It is an example when applied.

Here, when excavating a tunnel with a shield excavator, the inner peripheral surface of the tunnel digging is lined with a segment made of reinforced concrete for each ring-shaped portion of a predetermined length in the axial direction of the tunnel. It will be.

As shown in FIGS. 1 to 4, the segment 1 has a predetermined length in the axial direction of the tunnel and a curved shape obtained by dividing the circumference into a plurality of pieces in the circumferential direction. When lining the inner peripheral surface, the new segment 1A has one or two circumferentially orthogonal end surfaces and one axially orthogonal end surface because the inner circumferential surface is lined for each ring-shaped portion having a predetermined length in the axial direction. It is placed in contact with the existing adjacent segment 1B and is connected to the adjacent segment 1B at a plurality of points through bolts and nuts. In the case of the large tunnel, three sets are provided at each connecting point by the automatic fastening machine. It will be connected with the bolts and nuts.

In this automatic fastening machine 10, a radial slide frame 12 is provided on a frame 11 of an assembly apparatus main body of an automatic segment assembly apparatus, and the radial slide frame 12 is provided with a hydraulic motor via a guide member 13. It is driven to move in the radial direction via 15 and the screw shaft 14. The axial slide frame 16 connected to the tip of the radial slide frame 12 via a guide member 17 is axially moved and driven via a hydraulic motor and a screw shaft.

A support frame 20 extending a predetermined length in the circumferential direction of the tunnel is vertically supported on the flexible hanger 18 at the tip of the axial slide frame 16, and a first guide is provided at the lower end of the support frame 20. A member 21 and a second guide member 22 are provided.

A feed arm 23 is attached to the first guide member 21 so as to slide in the left-right direction in FIG. 1, and can be moved and driven in the left-right direction by a hydraulic cylinder 24. A fastening arm 25 is attached to the member 22 so as to be slidable in the left-right direction, and is movable and driven in the left-right direction by a hydraulic cylinder 26.

The structure of the connecting portion for fastening the segments 1 to each other with bolts will be described. A recess 2 is formed in the vicinity of the end surface 1 a of the segment 1, and a connecting wall portion is formed between the recess 2 and the end surface 1 a. 2, and the connecting wall portion is preliminarily formed with two upper-stage and one lower-stage bolt insertion holes 5 as shown.

In the socket holder 30 below the feed arm 23, as shown in FIG. 2, three fixed side sockets 31 (two upper stages and one lower stage) are arranged so as to correspond to the bolt insertion holes 5. A nut 8 having a hexagonal cross section perpendicular to the shaft, to which the washer 7 is previously fixed by a synthetic resin fastener, can be attached to each of the fixed-side sockets 31. As shown in FIG. 3, three drive side sockets 32 (two upper stages and one lower stage) are provided in the lower portion of the fastening arm 25 in an arrangement corresponding to the bolt insertion holes 5. The drive side socket 32 is configured so that the nut 8 to which the washer 7 is previously fixed can be mounted via a synthetic resin fastener.

Next, a first hydraulic motor 33 that drives each of the three drive-side sockets 32 and a second hydraulic motor 34 that is concentrically located on the opposite side of the first hydraulic motor 33 are provided. The hydraulic motor 33 is interlockingly connected to the drive-side socket 32 at the lowermost stage by a gear train 35 (comprising gears 36 to 41), and the second hydraulic motor 34 at the center is connected via a one-way clutch capable of transmitting drive force in the engaging direction. And the first hydraulic motors 33 on the front and rear sides are respectively connected to the input gears 36 of the gear train 35 via the gear train 42 (consisting of the gears 43 to 47). The second hydraulic motors 34 on both the front and rear sides are connected to the input gear 43 of the gear train 42 via a one-way latch. The central first hydraulic motor 33 is provided on the right side of the fastening arm 25, the pair of front and rear first hydraulic motors 33 is provided on the left side of the fastening arm 25, and the central second hydraulic motor 34 is provided on the fastening arm 25. The pair of front and rear second hydraulic motors 34 are provided on the left side and the right side of the fastening arm 25.

At the initial low torque / high speed engagement of the bolts / nuts, the three first hydraulic motors 33 are driven in series via the series circuit, and at the high torque / low speed engagement of the latter period of the engagement, the first hydraulic motor 33 is driven first. And the second hydraulic motors 33 and 34 are driven in parallel via a parallel circuit.

Next, the nut / washer supply device 50 will be described.

As shown in FIGS. 1 and 3, the nut / washer supply device 50 is mounted and fixed on a base frame 6 extending from the automatic assembly device main body frame 11 along the segment 1, and the automatic fastening machine. The nuts 8 (hereinafter, referred to as washers and nuts 8A) to which the washers 7 are simultaneously fixed are respectively attached to the three fixed side sockets 31 of the feed arm 23 of 10 and the three drive side sockets 32 of the fastening arm 25, respectively. Is configured to supply.

As shown in FIGS. 5 to 11, the main body frame of the nut / washer supply device 50 includes a central frame 51 and a pair of left and right lower frames 52 extending from the lower end of the central frame 51 to the left and right respectively. And an upper frame 53 connected to the upper end of the central frame 51 and extending left and right, and the like.

The central frame 51 is composed of a central wall member 54 and a pair of front and rear side wall members 55 fixed to both front and rear sides thereof.

The nut / washer supply device 50 supplies the washers / nuts 8 A simultaneously to the three fixed sockets 31 of the feed arm 23 and the three drive sockets 32 of the fastening arm 25. It has a symmetrical structure with respect to the central wall member 54, and is attached to the central frame 51 of the nut / washer feeder 50 and the central frame 51 of the nut / washer feeder 50 in order to facilitate alignment with the feed arm 23 and the fastening arm 25. The nut / washer supply mechanism is elastically supported by elastic support mechanisms 56 on the front and rear sides of the central frame 51.

Explaining the elastic support mechanism 56, the fixed side frame 57 is provided outside the front and rear side wall members 55, and each of the two support shaft members 58 that horizontally protrude from the front and rear side wall members 55. The movable pivotally supporting member 59, which is slidably fitted to the tip portion, is elastically biased outward by a bar 60, and guide shafts 61 vertically project from the upper and lower ends of each movable pivotally supporting member 59. The distal end of each guide shaft 61 is slidably fitted to a fixed pivot member 62 fixed to the stationary frame 57, and each guide shaft is interposed between the movable pivot member 59 and each fixed pivot member 62. A spring 63 is externally mounted on 61.

Therefore, the main body frame and the nut / washer supply mechanism are elastically supported by the front and rear elastic support mechanisms 56 so as to be movable in the front-rear direction and the up-down direction by a small distance. The pair of engaging projections 66 at the left end of the feeding arm 23 to the pair of engaging recesses 28, and the pair of engaging projections 67 at the right end of the engaging arm 25 to the pair of engaging recesses 29. , Respectively, to be easily engaged and aligned. The engagement protrusions 66 and 67 correspond to the positioning engagement portions, and the engagement recesses 28 and 29 correspond to the positioning portions.

Next, the nut / washer supply mechanism of the nut / washer supply device 50 will be described.

Two loading rod members, which are integrally formed with a pair of left and right loading rods 70, are inserted and fixed at the front and rear of the upper portion of the central wall member 54, and are provided at the front and rear portions of the upper portion. A pair of left and right loading rods 70 extend in a cantilever shape to the left and right sides of the center wall member 54, and a pair of left and right loading rods 70 are integrated in the lower portion of the center wall member 54. One loading rod member is fixedly inserted, and a pair of left and right loading rods 70 extends cantilevered to the left and right sides of the central wall member 54 by a predetermined length, and the three loading rods on the left side of the central wall member 54 are loaded. Each of the rods 70 is loaded with 12 washers and nuts 8A, and each of the three loading rods 70 on the right side of the central wall member 54 is loaded with 12 washers and nuts 8A.

An extruding mechanism 72 for feeding the washers and nuts 8 A loaded on the three loading rods 70 on the left side to the left one by one for each loading rod 70, and three loading rods 70 on the right side. A push-out mechanism 72 is provided for feeding the washers / nuts 8A loaded into the right side one by one for each loading rod 70.

The left-side pushing mechanism 72 will be described with reference to FIGS. 5, 8 and 9. Each loading rod 70 includes a slider 73 for pushing the rightmost washer / nut 8A to the left. Is connected to the piston rod of the double-acting hydraulic cylinder 75 by means of a hydraulic cylinder 75, and a connecting member 74 engaged with the three sliders 73 is connected to the piston rod of the double-acting hydraulic cylinder 75. By pushing the three sliders 73 to the left by one pitch (the length of one set of washers and nuts 8A), the washers and nuts 8A of the three loading rods 70 are pushed to the left one by one. There is. The pushing mechanism 72 on the right side is also configured in the same manner, and the double-acting hydraulic cylinder 76 pushes the three sliders 73 to the right through the connecting member 77 to move the washers and nuts 8A of the three loading rods 70, respectively. It is configured to be pushed out to the right one pitch at a time.

Next, a posture regulating mechanism for regulating the plurality of washers / nuts 8 A loaded on each of the loading rods 70 into a predetermined rotational posture that can be fitted into the fixed side socket 31 and the drive side socket 32. 80 will be described.

Three sets of posture regulating mechanisms 80 corresponding to the three left loading rods 70 will be described. First, the posture regulating mechanism 80 corresponding to the upper front loading rod 70 will be described. A pair of mechanism members 81 and 82 extending along the loading rod 70 are arranged on both upper and lower sides of the loading rod 70. The leftmost washer (the most free end side of the loading rod 70), a plurality of washers other than the nut 8A, and the upper and lower surfaces of the nut 8 of the nut 8A are provided at the portions of the restricting members 81 and 82 on the side of the loading rod 70. A plurality of auxiliary regulation portions 83 for contacting or approaching the nut 8 to regulate the predetermined or substantially predetermined rotational posture of the nut 8 are formed. A device 120 is provided for setting the posture of the washer / nut 8A on the most free end side supplied to the fixed socket 31.

The upper regulating member 81 is fixed to the front movable member 85 at a plurality of points, and the lower regulating member 82 is fixed to the front movable member 86 at a plurality of points so that these upper and lower members are fixed. The pair of movable members 85 and 86 are vertically guided by a pair of left and right vertically-oriented guide rods 87 that slidably pass therethrough, and for opening and closing the pair of upper and lower movable members 85 and 86. The cylinder body of the hydraulic cylinder 88 is fixed to the upper movable member 85, and the piston rod 88a is fixed to the lower movable member 86. Reference numerals 89, 90 and 91 are an upper limit position stopper of the upper movable member 85, a lower limit position stopper of the movable member 85, and an upper limit position stopper of the lower movable member 86, respectively.

When the upper and lower movable members 85 and 86 are separated by the opening / closing hydraulic cylinder 88, the space between the upper and lower auxiliary restricting portions 83 and 83 becomes larger than the outer diameter of the washer / nut 8A. A plurality of washers / nuts 8A can be fed by 72, and when the upper and lower movable members 85, 86 are driven in the approaching direction, a plurality of upper and lower assist restriction portions 83, 83 cause the nuts of the washers / nuts 8A to move. The position of the nut 8 is regulated by contacting or approaching the upper and lower surfaces of the nut 8.

Next, the posture regulating mechanism 80 corresponding to the loading rod 70 in the upper stage and the posture regulating mechanism 80 corresponding to the loading rod 70 in the lower stage are basically the same in configuration as the posture regulating mechanism 80. Although not described, the four movable members 85 and 86 of the two sets of posture regulating mechanisms 80 are guided by a common pair of left and right guide rods 87. The three sets of posture regulating mechanisms 80 respectively corresponding to the three loading rods 70 on the right side have a symmetrical configuration with the three sets of posture regulating mechanisms 80 on the left side, and a description thereof will be omitted.

The configuration of the device 120 for setting the posture of the washer / nut 8A on the most free end side will be described. This device 120 is provided individually corresponding to each of the three left and right posture regulating mechanisms 80. FIG. 12 is a longitudinal sectional view of a part of the nut / washer supply device 50 showing the posture setting device 120 for the washer / nut 8A on the most free end side, and FIG. 13 is a front view seen from the left side thereof. A concrete configuration of the posture setting device 120 when viewed from the front is shown in FIG. 14, and a vertical cross section when viewed from the right of FIG. 14 is shown in FIG. 15, and from the left of FIG. The vertical section seen is shown in FIG. The cylinder 122 of the hydraulic or pneumatic double-acting cylinder 121 is fixed to the moving member 123, and its piston rod 124 is fixed to the other moving member 125. Guide cylinders 126 and 127 are fixed to the moving members 123 and 125, respectively, and these guide cylinders 126 and 127 are vertically moved by guide members 131 and 132 fixed to fixing members 129 and 130 of the base 128. Be guided. A stopper 134 is fixed to the attachment member 133 of the base 128 at the central position of the guide rod 131, and the distance between the moving members 123 and 125 in the approaching direction is limited. Displacement of the moving members 123 and 125 in the mutually separating directions is limited by the fixing members 129 and 130.

A mounting piece 135 is fixed to the moving member 125, and a proximal end portion of an abutting member 136 formed of a resilient leaf spring is fixed to the mounting piece 135.

A mounting piece 137 is fixed to the moving member 123, and a bracket 138 is fixed to the mounting piece 137. A roller 139 is rotatably supported by the bracket 138. The rotation axis of the roller 139 is parallel to the axis 140 of the washer / nut 8A. The roller 139 fits into the notch 142 of the swing member 141. A roller 144, which is a free end portion, is rotatably provided on the swing member 141 by a pin 143. The axes of the pin 143 and the roller 144 are parallel to the axis 140. The pin 145 is fixed to the base 128 by a mounting member 146. The axis of the pin 145 is also parallel to the axes of the rollers 139 and 144, as mentioned above. The roller 144 is located closer to the washer / nut 8A than the axis line of the pin 145, which is the swing axis line (that is, below FIG. 14).

FIG. 17 is a front view showing the swinging member 141 and the configuration related thereto. When the cylinder 121 is extended, the contact member 136, which is a leaf spring, is below the washer / nut 8A as shown in FIG. 17 (1), and at this time, the swinging member 141 has its pin 145. 17 is at a position angularly displaced clockwise in FIG. 17 (1).

When the double-acting cylinder 121 is contracted in order to set the posture of the washer / nut 8A on the most free end side supplied to the fixed socket 31, the state shown in FIG. 17 (2) is obtained. The contact member 136 contacts the apex 148 of the hexagonal engaging portion of the nut 8, and the swinging member 141 is angularly displaced about the axis of the pin 145 in the counterclockwise direction 149 of FIG. The member 136 elastically abuts one of the six engaging portions 150, and the roller 144 contacts an engaging portion 151 on the opposite side of the engaging portion 150. In this way, the posture of the washer / nut 8A about the axis 140 is automatically set. After that, the double-acting cylinder 121 is extended, the contact member 136 is located below the washer 7, and the roller 144 is retracted to the side of the washer 7. -Only one nut 8A can be supplied.

The operation of the nut / washer supply device 50 described above will be described.

As shown in FIG. 1, the support frame 20 of the automatic fastener 10 is moved above the nut / washer supply device 50, the feed arm 23 is brought close to the left end of the nut / washer supply device 50, and The fastening arm 25 is brought close to the right end of the nut / washer supply device 50, the pair of engagement recesses 66 of the left end are engaged with the pair of engagement recesses 29 of the feed arm 23, and the pair of right end engagements is performed. When the pair of engaging recesses 29 of the fastening arm 25 is engaged with the fitting convex part 67, the bolt / nut automatic fastening device 10 and the nut / washer supply device 50 are connected in a predetermined positional relationship. At this time, since the posture of the nut / washer supply device 50 can be finely adjusted via the elastic support mechanism 56, the engaging projections 66, 67 and the engaging recesses 28, 29 can be easily engaged. You can

Next, initially, the hydraulic cylinders 88 of the respective posture regulating mechanisms 80 are driven to be closed, and the postures of the plurality of washers / nuts 8A are set by the plurality of auxiliary regulating portions 83 and the posture setting device 120 described above. When the hydraulic cylinders 88 of the six sets of posture regulating mechanisms 80 are simultaneously driven to open, the washers and nuts 8A can be fed, so that the hydraulic pressures of the pair of left and right pushing mechanisms 72 are controlled. When the piston rods of the cylinders 75 and 76 are extended by one pitch (the length of one set of washers and nuts 8A), each one washer and nut 8A at the tip end of the three loading rods 70 on the left side feeds the feed arm 23. In the three fixed side sockets 31 of the fastening arm 25 and one of the washers and nuts 8A at the tips of the three right loading rods 70 are loaded in the three driving side sockets 32 of the fastening arm 25, respectively. Be done. After the washer / nut 8A is loaded, the six hydraulic cylinders 88 are again driven to be closed and held in that state.

As described above, the 12 washers / nuts 8A can be sequentially supplied to the automatic tightening device 10 by repeating the above process. However, after all the washers / nuts 8A have been supplied, the rods of the hydraulic cylinders 75 and 76 can be supplied. With the hydraulic cylinders 88 opened and driven completely, the 12 new washers and nuts 8A are loaded on the respective loading rods 70 from the free end side of the loading rods 70. .

According to the above nut / washer supply device 50, the washer / nut 8A is externally fitted and loaded on the loading rod 70, so that a plurality of washers / nuts 8A can be easily loaded. Further, since the posture setting device 120 of each posture regulating mechanism 80 regulates the posture of the nut 8 on the most free end side to a predetermined rotational posture that fits into the sockets 31, 32, the washer / nut 8A is surely secured. Since the postures of the nuts 8 other than the nut 8 closest to the free end can be regulated by the posture setting device 120, the postures can be surely regulated. it can.

Further, since the pushing mechanism 72 for pushing out the plurality of washers / nuts 8A loaded on each loading rod 70 is provided, the washers / nuts 8A are socketed without moving the feeding arm 23 and the fastening arm 25. Since the plurality of washers and nuts 8A of each of the three loading rods 70 are configured to be extruded by the common extruding mechanism 72, the configuration of the extruding mechanism 72 can be simplified.

Engagement protrusions 66, 67 are provided at the left end and the right end of the body frame, respectively, and these engagement protrusions 66, 67 are engaged with the engagement recesses 28, 29 of the feed arm 23 and the fastening arm 25. Since they are aligned and positioned, the feed arm 23 and the fastening arm 25 can be accurately aligned with the nut / washer supply device 50. Further, since the nut / washer supply mechanism attached to the main body frame of the nut / washer supply device 50 is elastically supported via the elastic support mechanism 58, the positions of the feed arm 23 and the fastening arm 25, and the nut / washer supply device 50. Matching can be easily performed.

The present invention can be implemented not only in connection with washers and nuts 8A, but also in connection with bolts with fixed washers and threaded parts such as nuts and bolts without those washers. It can be carried out.

[0051]

[Effect of device]

 As described above, according to the present invention, the abutting member and the swinging member are displaced in the separating direction by the driving means, whereby the screw parts are moved between the abutting member and the swinging member to supply the same. When setting the posture of the screw part, the contact member and the swing member are displaced in the proximity direction by the driving means, and the contact member is elastically attached to one of the engaging portions such as nuts. When contacting the free end of the rocking member with the other engaging part, the posture of the screw part elastically contacting the contacting member is desired when the rocking member rocks. The position, that is, the position of the rotation angle around the axis of the screw part can be set and determined. Therefore, for example, even if a threaded component is constructed by fixing a washer having an outer diameter larger than the maximum outer diameter of the nut to one end surface of the nut, it is possible to automatically adjust the posture around the axis of the threaded component to the desired one. Can be set as desired.

Further, according to the present invention, the driving means can be realized by a double-acting cylinder, which can simplify the configuration.

[Brief description of drawings]

FIG. 1 is a front view of a bolt / nut automatic fastening device according to an embodiment.

FIG. 2 is a right side view of a main part of a feed arm of the apparatus shown in FIG.

3 is a left side view of a fastening arm of the device of FIG.

4 is a plan view of the nut and washer supply and segments provided in the apparatus of FIG.

5 is a cross-sectional plan view of the nut / washer supply device (FIG. 7).
5 is a sectional view taken along line 5-5).

6 is a cross-sectional plan view of the nut / washer supply device (FIG. 7).
6 is a sectional view taken along line 6-6 of FIG.

FIG. 7 is a front view of the nut / washer supply.

FIG. 8 is a vertical cross-sectional front view of the nut / washer supply.

9 is a sectional view taken along line 9-9 of FIG.

10 is a sectional view taken along line 10-10 of FIG.

11 is a cross-sectional view taken along line 11-11 of FIG.

FIG. 12 is a vertical cross-sectional view showing a part of a nut / washer supply device 50 including a posture setting device 120 for the nut / washer 8A.

FIG. 13 is a nut / washer supply device 50 shown in FIG.
3 is a side view showing the posture setting device 120 in FIG.

14 is a front view of the attitude setting device 120. FIG.

15 is a cross-sectional view of the posture setting device 120 seen from the right side of FIG.

16 is a cross-sectional view of the posture setting device 12 viewed from the left side of FIG.

FIG. 17 is a front view showing a swing member 141 and a configuration related thereto.

[Explanation of symbols]

 10 Automatic bolt / nut fastening device 28, 29 Engagement recess 50, 50A Nut / washer supply device 66, 67 Engagement protrusion 70 Loading rod 72 Push-out means 73 Slider 75, 76 Hydraulic cylinder 80 Attitude regulation mechanism 81, 82 Regulation member 83 Auxiliary restricting part 84 Restricting part 88 Hydraulic cylinder 120 Attitude setting device 121 Double acting cylinder 122 Cylinder 124 Piston rod 123, 125 Moving member 128 Base body 136 Abutting member 139, 144 Roller 141 Swing member 142 Notch 150, 151 Engagement part

Claims (2)

[Scope of utility model registration request] 1. A contact member which is in contact with one of a plurality of engaging portions of a screw component having a polygonal cross section perpendicular to the axis and which has elasticity, and which is arranged on the opposite side of the contact member with respect to the screw member, The swing end is provided so as to be swingable about a swing axis parallel to the axis of the screw member, and the free end portion of the swing member is closer to the screw component than the swing axis, and the abutting member and the swing member are interlocked with each other. And a drive means for reciprocally driving in the approaching direction and the separating direction. 2. The drive means has a structure in which one of a cylinder and a piston rod is connected to the abutting member and the other is connected to the swinging member. 1. The posture setting device of the screw member according to 1.