JP3142013U - Automatic fastening device - Google Patents

Abstract

An automatic fastening device capable of fastening a member to be fastened using the fastening members at a high density in a plane is provided.
Since the fastening member holder 23 is transported by a transporter between the fastening member supply machine 13 and the fastening machine 14, the fastening member supply machine 13 and the fastening machine 14 are separately provided for one fastening member. The fastening member feeder 13 and the fastening machine 14 can both be arranged in a high density in a plane with respect to one fastening member. In addition, since each of the plurality of fastening member holding portions 24 in the fastening member holder 23 elastically holds the fastening member in a planar alignment state, the mechanism of the fastening member holder 23 may be simple, and the fastening member holder 23 can hold the fastening member at a high density in a plane.
[Selection] Figure 1

Description

  The present invention relates to an automatic fastening device for automatically fastening a fastening member using a fastening member.

As described in Patent Documents 1 to 4, as a kind of automatic fastening device, a process of supplying a screw and a process of screwing the supplied screw into a fastened member are automatically and continuously performed. There is an automatic screw tightener.
JP 59-156631 A JP 7-328870 A Japanese Patent Application Laid-Open No. 11-90742 JP 2003-231027 A

  In the automatic screw tightening machines of Patent Documents 1 to 3, the screw is directly supplied to the lower side of the screw tightening machine. The screw is conveyed to the lower side of the screw tightening machine while being held. However, in the automatic screw tightening machines disclosed in Patent Documents 1 to 3, since it is necessary to simultaneously arrange both the screw supply machine and the screw tightening machine with respect to one screw, the screws are screwed in at a high density in a plane. I can't. Further, in the automatic screw tightening machine of Patent Document 4, since the screw chuck requires a larger area than the screw itself, the screw cannot be screwed in at a high density in a plane. Accordingly, an object of the present invention is to provide an automatic fastening device that can fasten a fastened member by using fastening members in a high density in a plane.

  In the automatic fastening device according to claim 1, the fastening member holder is transported by the transporter between the fastening member supply machine and the fastening machine, so that the fastening member feeder and the fastening machine are respectively connected to one fastening member. What is necessary is just to arrange | position separately, and it can arrange | position both a fastening member supply machine and a fastening machine with respect to one fastening member at high density in a plane, respectively. In addition, since each of the plurality of fastening member holding portions in the fastening member holder elastically holds the fastening member in a planar alignment state, the mechanism of the fastening member holder can be simple, and the fastening member holder is the fastening member. Can be held at a high density in a plane.

  In the automatic fastening device according to claim 2, since either a screw fastening machine or a press-fitting machine can be used as a fastening machine, both screw screwing and nail press-fitting are performed on a member to be fastened. Can do.

  In the automatic fastening device according to claim 1, both the fastening member feeder and the fastening machine can be arranged in a high density in a plane with respect to one fastening member, and the fastening member holder is a fastening member. Can be held at a high density in a plane, so that the fastening member can be fastened using the fastening members at a high density in a plane.

  In the automatic fastening device according to claim 2, since both the screwing of the screw and the press-fitting of the nail can be performed on the member to be fastened, both the screw and the nail are used in a high density in a plane. Thus, the fastened member can be fastened.

  Hereinafter, first to third embodiments of the present invention will be described with reference to FIGS. 1-6 has shown the automatic screw fastening apparatus which is 1st embodiment of this invention. As shown in FIG. 1, in the automatic screw tightening device 11, a screw feeder 13 and a screw tightener 14 are disposed above the upstream side and the downstream side of the belt conveyor 12, respectively. The screw feeder 13 is provided with a plate-like screw feeder 15, and the screw feeder 15 is provided with a pair of guide pins 16. The screw supply tool 15 is provided with a plurality of cylindrical screw supply portions 17 in a planar alignment state, and each screw supply portion 17 and a compressed air type screw supply body 21 are mutually connected by a screw supply pipe 22. It is connected.

  The automatic screw tightening device 11 is provided with a plate-like screw holder 23, and a plurality of cylindrical screw holders 24 are aligned with the screw holder 23 in correspondence with the screw feeder 17 of the screw feeder 15. It is equipped with. As shown in FIG. 2, the outer peripheral surface of each screw holding portion 24 is provided with cuts 25 in the axial direction at predetermined angular intervals, for example, 90 ° intervals, and a portion between the cuts 25 is formed. The screw holding part 24 has elasticity in the radial direction. The inner diameter of each screw holding portion 24 is slightly smaller than the outer diameter of the screw head of the screw supplied from the screw feeder 13. The screw holder 23 is provided with a pair of guide holes 26 into which the guide pins 16 of the screw supply tool 15 are inserted, and a pair of guide pins 27.

  The screwing machine 14 is provided with a plate-like screwdriver holder 31, and a plurality of electric screwdrivers 32 are provided in the screwdriver holder 31 in an aligned state corresponding to the screw supply portion 17 of the screw feeder 15. It has been. In each electric screwdriver 32, the screwdriver 33 and the motor 34 are coaxial with each other, and the length of each screwdriver 33 is equal to each other. A buffering coil spring 35 is disposed between the periphery of each screwdriver 33 and the screwdriver holder 31. Further, the screwdriver holder 31 is provided with a pair of guide pins 36 that are inserted into the guide holes 26 of the screw holder 23.

  The member to be screwed 37 is conveyed on the belt conveyor 12 while being positioned on the pallet 41, and the pallet 41 is provided with a pair of guide holes 42 into which the guide pins 27 of the screw holder 23 are inserted. . The belt conveyor 12 is provided with a stopper 43 that can stop the pallet 41 at an accurate position below the screw feeder 13 and below the screw tightener 14.

  When the screw is screwed by the automatic screw tightening device 11 as described above, as shown in FIG. 3A, the screw feeder 15 of the screw feeder 13 is lowered, and the guide pin of the screw feeder 15 is lowered. 16 is inserted into the guide hole 26 of the screw holder 23, and the screw supply tool 15 is united with the screw holder 23. In this combined state, the screw 44 (FIG. 2) is supplied from the screw supply body 21 to the screw holding portion 24 of the screw holder 23 via the screw supply pipe 22 and the screw supply portion 17. As described above, the inner diameter of the screw holding portion 24 is slightly smaller than the outer diameter of the screw head of the screw 44, and the portion between the notches 25 of the screw holding portion 24 has elasticity in the radial direction of the screw holding portion 24. Therefore, the screw 44 supplied to the screw holding unit 24 is held in the screw holding unit 24 without dropping from the screw holding unit 24.

  When the screw 44 is supplied to the screw holding portion 24 of the screw holder 23, the screw supplier 15 rises and is separated from the screw holder 23, and is shown in FIG. As shown, the screw holder 23 is lowered, the guide pins 27 of the screw holder 23 are inserted into the guide holes 42 of the pallet 41 on the belt conveyor 12, and the screw holder 23 is united with the pallet 41. When this combination is completed, the stopper 43 below the screw feeder 13 is released, and the screw holder 23 and the pallet 41 in the combined state are located below the screw tightener 14 as shown in FIG. It is conveyed by the belt conveyor 12 to a position where it abuts against the stopper 43.

  When the screw holder 23 and the pallet 41 in the combined state are conveyed to the lower side of the screwing machine 14, the screwing machine 14 is lowered as shown in FIG. Then, each electric screwdriver 32 screws the corresponding screw 44 held in the screw holding portion 24 of the screw holder 23 into the screwed member 37. As described above, the inner diameter of the screw holding portion 24 is slightly smaller than the outer diameter of the screw head of the screw 44, but the portion between the notches 25 of the screw holding portion 24 is elastic in the radial direction of the screw holding portion 24. Therefore, when the screwdriver 33 applies pressure in the axial direction of the screw holding portion 24 to the screw 44, the portion between the notches 25 of the screw holding portion 24 is expanded in the radial direction of the screw holding portion 24. As a result, the screw 44 escapes from the screw holding portion 24.

  When the screw 44 is screwed into the screwed member 37, the screwing machine 14 is raised to the original position shown in FIG. 3 (c), and the screw holder 23 is moved by a conveying machine (not shown). Ascends below the screwing machine 14 and above the screwed member 37 into which the screw 44 is screwed. Then, the screw holder 23 is returned to the original position shown in FIG. 3A by a transport machine (not shown), the stopper 43 below the screw tightening machine 14 is released, and the screw 44 is screwed. The inserted screw fastening member 37 is conveyed by the belt conveyor 12 together with the pallet 41. Thus, one cycle of screwing by the automatic screw tightening device 11 is completed, and this cycle is repeated.

  In the above automatic screw tightening device 11, as shown in FIG. 1, the screwdriver 33 and the motor 34 in each electric screwdriver 32 are coaxial with each other, and the length of each screwdriver 33. Are equal to each other. However, as shown in FIG. 5A, the length of the screwdriver 33 of one electric screwdriver 32 of the pair of electric screwdrivers 32 adjacent to each other is set to the screwdriver of the other electric screwdriver 32. It may be longer than the total length of the motor 33 and the motor 34. In the case of FIG. 5A, the interval between the screwdrivers 33 can be made narrower than that in FIG. It can be screwed in at a high density in a plane.

  Further, as shown in FIG. 5B, the screwdriver 33 and the motor 34 may be mechanically coupled by a belt 45 by shifting the axis of the screwdriver 33 and the motor 34. As shown in FIG. 5C, the screwdriver 33 and the motor 34 may be mechanically coupled by a universal joint 46 by shifting the axial centers of the screwdriver 33 and the motor 34. . Also in the case of FIGS. 5B and 5C, the distance between the screwdrivers 33 can be made narrower than in the case of FIG. It can be screwed in at a higher density in plan than in the case.

  Further, in the above automatic screw tightening device 11, as shown in FIG. 1, the screw supply tool 15 having the number of screw supply parts 17 corresponding to the plurality of screw holding parts 24 of the screw holder 23 is supplied as a screw. Similarly, the screw tightening machine 14 includes a screwdriver holder 31 having a number of electric screwdrivers 32 corresponding to the plurality of screw holders 24 of the screw holder 23. However, as shown in FIGS. 6A and 6B, the screw supply portion 17 or the electric screwdriver 32 is attached to one end of the arm 48 in which the long hole 47 is provided in the longitudinal direction. 6 (c), the screw 44 may be supplied or screwed in while the arm 48 is rotated and the center of rotation is moved along the long hole 47. In the case of FIG. 6, the screw 44 can be screwed or press-fitted at a plurality of locations with a single screw supply unit 17 or an electric screwdriver 32, and therefore the number of screw supply units 17 and electric screwdrivers 32 is shown in FIG. It can be less than the case of.

  FIG. 7 shows an automatic screw tightening device according to a second embodiment of the present invention. In the automatic screw fastening device 51, a screw feeder 52 is used instead of the screw feeder 13 in the automatic screw fastening device 11 described above. The screw feeder 52 is also provided with a screw feeder 15, and one end of a screw supply pipe 22 is connected to the screw supply portion 17. However, the other end portion of each of the screw supply pipes 22 is connected to each of the plurality of cylindrical screw receiving portions 54 in the plate-like screw receiving device 53, and the plurality of screw receiving portions 54 are connected to the screw receiving device. 53 are linearly aligned.

  A plate-shaped screw distributor 55 is disposed on the screw receiver 53, and the screw distributor 55 includes a plurality of cylindrical screw distributors 56 corresponding to a part of the plurality of screw receivers 54 and a plurality of screw distributors 56. A plurality of cylindrical screw feeding portions 57 corresponding to the screw receiving portions 54 are provided. In the automatic screw tightening device 51, the number of the screw receiving portions 54 and the screw feeding portions 57 is six, and the number of the screw distribution portions 56 is two. In the initial position of the screw distributor 55 shown in FIG. 7, the two screw distributors 56 correspond to the first screw receiver 54 and the fourth screw receiver 54, respectively.

  Two screw distribution portions 56 and two screw supply bodies 61 are connected to each other by a screw supply pipe 62, and one common compressed air supply pipe 63 is connected to six screw feed portions 57. Yes. A stepping motor 65 is connected to the screw distributor 55 via a ball screw 64 that extends in the alignment direction of the plurality of screw receiving portions 54, and the direction perpendicular to the alignment direction of the plurality of screw receiving portions 54 is the axial center. A pneumatic cylinder 66, which is a direction, is also connected. The stepping motor 65 intermittently moves the screw distributor 55 with respect to the screw receiver 53 for each one of the plurality of screw receivers 54 that are linearly aligned, and the pneumatic cylinder 66 is connected to the screw receivers 54. The screw distributor 55 is moved relative to the screw receiver 53 in a direction perpendicular to the alignment direction.

  When screws are screwed by the automatic screw tightening device 51 as described above, first, the screw supply pipe 62 and the screw distribution unit 56 are moved from the screw supply main body 61 to the initial position of the screw distribution tool 55 shown in FIG. Then, screws are supplied to the first and fourth screw receiving portions 54 of the screw receiving member 53. Next, by operating the stepping motor 65, the screw distributor 55 is moved relative to the screw receiver 53 by one of the plurality of screw receivers 54, and the two screw distributors 56 of the screw distributor 55 are respectively moved. The second screw receiving portion 54 and the fifth screw receiving portion 54 are made to correspond to each other. In this state, as described above, the screws are supplied to the second and fifth screw receiving portions 54 of the screw receiving member 53.

  Further, when the screws are supplied to the third and sixth screw receiving portions 54 of the screw receiver 53 in the same manner as described above, the screws are supplied to the first to sixth screw receiving portions 54. become. The screws supplied to the first to sixth screw receiving portions 54 remain held by these screw receiving portions 54. At the time when the screw is supplied to the third and sixth screw receiving portions 54, the screw feeding portion 57 of the screw distributor 55 is in the axial direction of the pneumatic cylinder 66 with respect to the screw receiving portion 54 of the screw receiving portion 53. Is merely aligned with the screw receiving portion 54 of the screw receiving member 53 in the extending direction of the ball screw 64.

  Therefore, next, the operation of the pneumatic cylinder 66 causes the screw feeder 57 of the screw distributor 55 to correspond to the screw receiver 54 of the screw receiver 53. When compressed air is supplied to the first to sixth screw receivers 54 of the screw receiver 53 via the compressed air supply pipe 63 and the screw feeder 57 of the screw distributor 55 in this state, The screw held by the sixth screw receiving portion 54 is supplied to the screw holding portion 24 of the screw holder 23 through the screw supply pipe 22 and the screw supply portion 17 of the screw supply tool 15. Thereafter, the screw is screwed into the screw tightening member 37 in the same manner as the automatic screw tightening device 11 described above.

  FIGS. 8-10 has shown the components of the automatic nailing apparatus which is 3rd embodiment of this invention. In this automatic nailing device, instead of the screw feeder 13, screw holder 23, and screw fastener 14 in the automatic screw fastening device 11 described above, the nail feeder 71 shown in FIGS. A holder 72 and a nailing machine 73 are used. As shown in FIG. 8A, the nail feeder 71 is provided with a plate-like nail feeder 74. This nail supply tool 74 is provided with a plurality of cylindrical nail supply portions 75 in a planar alignment state, and as shown in FIGS. 8 (a) and 8 (b), each nail supply portion 75 and A nail supply body 76 is connected to each other by a nail supply pipe 77.

  As shown in FIG. 9A, the nail holder 72 is provided with a plurality of cylindrical nail holders 81 in an aligned state corresponding to the nail supply part 75 of the nail supply tool 74. The inner diameter of each nail holding portion 81 is slightly smaller than the outer diameter of the nail head of the nail supplied from the nail feeder 71. The alignment state of the nail supply part 75 and the nail holding part 81 corresponds to the alignment state of the nail 83 press-fitted into the nail member 82 manufactured, for example, on a wooden pallet. It varies depending on the alignment state.

  The nail holding portion 81 may have a uniform cylindrical shape as shown in FIG. 9 (b), and has a predetermined angular interval, for example, 90 on the outer peripheral surface as shown in FIG. 9 (c). Notches 84 may be provided in the axial direction at intervals of °. In the nail holding portion 81 provided with the notches 84, the portion between the notches 84 has elasticity in the radial direction of the nail holding portion 81, but the cylindrical nail holding portion 81 having a uniform inside is also nail. The holding portion 81 has a certain degree of elasticity in the radial direction. Therefore, the nail supplied to the nail holding portion 81 is held by the nail holding portion 81 without dropping from the nail holding portion 81. The nail holding portion 81 provided with the notches 84 is provided with a protruding portion 85 directed to the axis of the nail holding portion 81 at each portion between the notches 84.

  As shown in FIG. 10A, the plate-shaped nailing machine 73 has a plurality of columnar nailing portions 86 shown in FIG. Are provided in an aligned state corresponding to. When the nail is press-fitted by the automatic nail driving device as described above, which is a nail press-fitting machine, the screw 44 is substantially screwed in by the automatic screw fastening device 11 except that the nail driving machine 73 is pressed by a hydraulic machine or the like. Similar steps are performed. As shown in FIG. 9D, when a cylindrical nail holding part 81 having a uniform inside is used, the position of the nail 83 is regulated by the nail holding part 81, so that the nail 83 is bent. Even press-fitting is possible. Further, as shown in FIG. 9E, when the nail holding portion 81 provided with the notch 84 and the protruding portion 85 is used, the nail 83 is centered by the protruding portion 85.

  In the first to third embodiments described above, the number of the screw supply unit 17, the electric screwdriver 32, the screw receiving unit 54, the screw feeding unit 57, the nail supply unit 75, the nail driving unit 86, and the like is six. The number of the screw distribution units 56 and the like is two. However, these numbers are not necessarily limited to these values, and may be other values.

  The present invention can be used for manufacturing automatic fastening devices such as automatic screw fastening devices and automatic nailing devices.

1 is a perspective view of a first embodiment of the present invention. It is a fragmentary sectional view of a first embodiment of the present invention. It is a perspective view which shows the operation | work process by 1st embodiment of this invention sequentially. It is a fragmentary sectional view of a first embodiment of the present invention. It is a side view of the changed principal part in 1st embodiment of this invention. The main part which changed in 1st embodiment of this invention is shown, (a) (b) is a perspective view, (c) is a top view in the middle of a work process. It is a perspective view of 2nd embodiment of this invention. The principal part of 3rd embodiment of this invention is shown, (a) is a perspective view, (b) is a partial expansion perspective view. The principal part of 3rd embodiment of this invention is shown, (a) is a perspective view, (b) (c) is a partial expanded perspective view, (d) (e) is a partial expanded sectional view. The principal part of 3rd embodiment of this invention is shown, (a) is a perspective view, (b) is a partial expansion perspective view.

Explanation of symbols

11 Automatic screw fastening device (automatic fastening device)
13 Screw feeder (fastening member feeder)
14 Screw fastening machine (fastening machine)
23 Screw holder (fastening member holder)
24 Screw holding part (fastening member holding part)
37 Screwed member (fastened member)
44 Screw (fastening member)
51 Automatic screw fastening device (automatic fastening device)
52 Screw feeder (fastening member feeder)
71 Nail feeder (fastener supply machine)
72 Nail holder (fastening member holder)
73 Nailing machine (fastening machine)
81 Nail holder (fastening member holder)
82 Nailing member (fastened member)
83 Nail (fastening member)

Claims (2)

Fastening member holders each having a plurality of fastening member holding portions that elastically hold the fastening members in a planar alignment state;
A fastening member feeder for simultaneously feeding the fastening member to each of the plurality of fastening member holding portions;
A fastening machine that fastens a fastened member simultaneously using a plurality of the fastening members held by the fastening member holder;
An automatic fastening device comprising: a transporter that transports the fastening member holder between the fastening member feeder and the fastening machine. A screw to be screwed into the member to be fastened or a nail to be press-fitted is the fastening member,
The automatic fastening device according to claim 1, wherein the screwing machine that performs the screwing or the press-fitting machine that performs the press-fitting is the fastening machine.

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