JPS61100327A - Device for supplying parts in arrangement - Google Patents

Abstract

PURPOSE:To enable stable supply of parts in arrangement by disposing a guide rail having a gap to support the underneath of the top of a small part and hanging its lower portion under an oscillator, in supplying device for small parts such as a bolt with top. CONSTITUTION:Parts in a stock case 32 oscillated by an oscillator 31 go up in arrangement through a travelling path 34, and move toward a part holder unit 11 on a guide rail 41 oscillated by an oscillator 42. In the present device, the guide rail 41 can support the underneath of part top, have a gap to accommodate hanging lower portion of the part, and is laid almost horizontally, and equipped, moreover, with a top retainer 44 in order to prevent travelling parts from jumping out. Consequently, the parts travel on the guide rail 41 along the top retainer 44 smoothly in arrangement. The parts transferred are held one by one in the part holder unit 11 and bound.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is applicable to screws, rivets, bolts, and other parts having heads and legs in stationary machines such as screw tightening machines, rivet caulking machines, and bolt fastening machines. The present invention relates to a parts fastening machine and a parts aligning and supplying device that is attached to an industrial robot or the like to which the parts fastening machine is attached as an advanced working tool, and that aligns and supplies the parts from a parts storage unit to the driver section of the advanced working tool.

[Conventional technology]

In the above-mentioned stationary parts fastening machine and parts aligning device attached to an industrial robot equipped with the parts fastening machine as an advanced working tool, for example, as shown in FIG. A parts storage unit 130 scoops up and supplies parts such as screws, rivets, bolts, etc. stored in a scooping plate 132 in predetermined quantities, and a diagonal chute tray that aligns and supplies the parts supplied from this parts storage unit 130 to a working tool. - rule 141.

(Problem to be solved by the invention) This device is suitable for supplying parts with relatively long legs relative to the head diameter, but is suitable for supplying relatively small parts or parts with relatively short legs relative to the head diameter. When the above-mentioned parts alignment and supply apparatus is used to align and supply parts, there are problems such as parts falling over or parts being misaligned. Alternatively, there is a system in which the parts are fed one by one using compressed air from the parts storage unit to the parts fastening machine, but the parts pass between the parts storage unit and the parts holding unit at the tip of the driver section. Because the hoses are connected, especially when a parts fastening machine is attached to an industrial robot as a work tool, the hose may become twisted or bent due to the movement of the arm, and parts may become stuck inside the hose. be.

Means for Solving Problem C) The present invention aims to solve the above problems and provide a device that is compact, lightweight, and enables stable alignment and supply of relatively small parts. A drive section consisting of a vibrating section 42 is attached to the lower part of the drive section, and a drive section that is driven by this drive section, supports the lower surface of the head of the component, and has an interval that allows the legs to hang down. A guide rail 41 for aligning and supplying parts is fixed substantially horizontally, and a head holder 44 is further provided above the guide rail 41 and along this. "[Operation] When a start signal is input and the vibrator 31 is driven, the storage case 32 vibrates, and the parts of the storage case 32 are supplied onto the guide rail 41. At this time, the guide rail 41 also Since the parts are vibrated by the vibrating section 42, the parts are aligned and fed onto the guide rail 41 toward the working tool.

〔Example〕

An embodiment of the present invention will be described below. In Figures 1 and 2, 1 is a column, and a frame 2 is fixed to this column 1.
A bracket 3 is fixed to the tip of the bracket 3, and a pipe material 20 is fixed upright to this bracket 3. A fixing plate 21 is fixed to this pipe material 20, and this fixing plate 2
A piston cylinder 22 is attached to 1. One end of the piston shaft (not shown) of the piston cylinder 22 is connected to the bracket 3 at one end, and the other end is connected to a guide block 4 which is movable up and down along a guide shaft 23 fixed to the fixed plate 21. A driver section 10 of a screw tightening machine is fixed to this guide block 4. A motor 12 is provided at the top of the driver section 10, and a driver bit 13 that engages with the head of the screw 60 is connected to the tip of the motor 12. A suction sleeve 14 for suctioning the screw 60 at the tip is fitted over the driver bit 13, and air is sucked from the tip of the suction sleeve 14.

Further, on the lower surface of the bracket 3, a vibration part 31 is attached which stores a large amount of screws 60 in a storage case 32 and generates vibrations by forming a driving part of a component storage unit 30 that aligns and supplies the screws 60. It is fixed via a plate 33.

This component storage unit 30 is connected to a supply unit 40 that supplies the aligned and supplied screws 60 to the screw holding unit 11 at the tip of the driver section 10, and this supply unit 40 is also fixed to the lower surface of the bracket 3. There is.

Further, this supply unit 40 is connected to the parts storage unit 30.
A guide rail 41 is arranged to connect the exit (not shown) of the movement path 34 and the screw holding unit 11, and to align and supply the screws 60 with their heads upward and their legs hanging down. The guide rail 41 is attached to a vibrating section 42 fixed to the lower surface of the bracket 3 via a support member 43. Reference numeral 44 denotes a head shank that is disposed directly above and along the guide rail 41 to prevent the screws 6G that are aligned and supplied on the guide rail 41 from coming out; this head shank 44 is also attached to the support member 43. ing.

Next, the operation of this embodiment will be explained. After the workpiece (not shown) is positioned at the screw tightening position, when a start signal is input, the parts storage unit 30 is driven and the storage case 3
The screws 60 in the case 32 are sequentially aligned and moved upward along the movement path 34 due to the vibration of the case 32. In this way screw 6
0 moves and reaches the exit of this moving path 34, the screw 6
0 is the guide rail 4 with the head up and the legs hanging down.
1, and this guide rail 41 is also vibrated by the vibrator 42, so the screw 60 is aligned on the screw holding unit 1.
Align and move towards 1. The screws 60 are held one by one in the screw holding unit 11.

Thereafter, when the driver section 10 descends, the screw 60 is suction-held by the tip of the suction sleeve 14 and reaches the working position of the workpiece, and then the tip of the driver bit 13 engages with the head of the screw 60. At this time, since the motor 12 is already rotating, the screw 60 is tightened to the workpiece. When the screw tightening work is completed in this way, the driver section 10
is raised, and then the next screw 60 is attached to the screw holding unit 11.
The screws are stored in the screwdriver and can be used for the next screw tightening operation.

FIG. 3 shows another embodiment of the present invention, in which reference numeral 1 denotes a column, and a bracket 3 is fixed to this column 1. The tip of a piston shaft of a piston cylinder 22 is fixed to this bracket 3, and this piston cylinder 22 is fixed to a guide block 4 provided so as to be able to reciprocate along a guide shaft 23 fixed upright to the bracket 3. ing. A driver portion 10 is fixed to this guide block 4 for rotationally driving a driver bit (not shown) that engages with a screw 60 held by a screw holding unit 11 provided at the tip. Further, a parts storage unit 30 similar to that of the above embodiment is installed on the rear lower surface of the bracket 3 with the drive section facing upward and a storage case 32 facing downward. A fixed supply unit 40 is connected to the screw holding unit 11 via a guide tray 41. This guide rail 4
1 is also fixed to a vibrating part 42 fixed to the lower surface of the bracket 3 via a support member 43, and the support member 43 has a head part 44 disposed directly above and along the guide rail 41. installed. Therefore, when the screw tightening work is started, when the screws 60 aligned and supplied from the parts storage unit 30 pass through the guide rail and are held in the screw holding unit 11, the driver part 10 is lowered to a predetermined position under the action of the piston cylinder 22, and performs screw tightening work on a workpiece (not shown).

Furthermore, FIG. 4 shows another embodiment, which includes a first arm 52 horizontally pivoted by a first motor 54 about a support 51, and a first arm 52 provided at the tip of the first arm 52. The second motor 55 is independently connected to the arm 52.
The screw tightening machine is attached as a working tool to an industrial robot consisting of a second arm 53 that rotates at a 50° angle.

Therefore, the second arm 53 is attached to the bracket 3 of the above embodiment.
A driver section 10 that is moved up and down by a piston cylinder 22 is attached to the tip of the second arm 53. This driver section 10 is connected to a supply unit 40 from a component storage unit 30 fixed to the lower surface of the second arm 53.
It has a driver bit (not shown) for tightening the screws 60 held by the screw holding unit 11, which holds the screws 60 supplied through the screw holding unit 11 one by one, onto the workpiece. This supply unit 40 also includes a vibrating part 42 fixed to the second arm 53, a guide rail 41 fixed to the vibrating part 42 via a support member 43, and a guide rail 41, similar to the embodiment described above.
A head part 44 is attached to the support member 43 directly above and along the guide rail 4.
1 is arranged between the parts storage unit 30 and the screw holding unit 11.

Since the industrial robot has been taught the work contents in advance, when a start signal is received, the work tool moves to the work position on the workpiece and performs the screw tightening work.

〔Effect of the invention〕

As is clear from the embodiments described above, in the present invention, a driving section consisting of the vibrating section 42 is attached to the lower part of the bracket 3 or the second arm 53, and a drive section that is driven by this driving section is attached to the lower part of this driving section. A guide rail 41 that supports the head of the component and aligns and supplies the component with an interval that allows the legs to hang down is fixed almost horizontally, and furthermore, the head is placed directly above the guide rail 41 along this guide rail 41. A section 44 is provided.

Therefore, when parts such as screws, bolts, rivets, etc. are fed from the parts storage unit attached to the bracket, these parts are aligned and fed forward by the vibrating guide rail, ensuring that the parts are firmly attached to the legs. There is no possibility that parts will be jammed during feeding due to misalignment and feeding with the parts hanging down.

In addition, since the drive section consisting of the vibrating section is mounted on the top and the guide rail vibrated by this drive section is mounted directly below, the space below the bracket can be used effectively, and the space required for installation is relatively small. At the same time, no special mounting or parts are required for attaching this component alignment and supply device, and since the weight added to the bracket is small, the overall cost is reduced. In addition, since this parts alignment and supply device uses a vibration method,
Unique features include the ability to accurately align and feed relatively small parts, and in particular, when aligning and feeding parts with relatively short leg lengths relative to the head diameter, the parts can be fed in the correct posture without falling over. The effect of this can be obtained.

[Brief explanation of drawings]

FIG. 1 is an enlarged view of the main part of FIG. 2 with a partial cross section, FIG. 2 is a front view showing one embodiment of the present invention, and FIG. 3 is a front view showing another embodiment of the present invention. FIG. 4 is a front view showing another embodiment of the present invention installed on an industrial robot, and FIG. 5 is a front view showing a conventional example. 1.51 is the column, 2 is the frame, 3 is the bracket, 4 is the guide block, 10 is the driver part,
11 is a screw holding unit, 12 is a motor,
13 is a driver bit, 14 is a suction sleeve, 20 is a pipe, a plastic plate, 21 is a fixed plate, 22 is a piston cylinder, 23 is a guide shaft, 30 is a parts storage unit, 31 is an excitation part, ! ) 32 is a storage case, 33 is a mounting plate, 34 is a movement path, 40 is a supply unit, 41 is a guide rail, 42 is an excitation part, 43 is a support member, 44 is a head part, 52 is a first arm, 53 is a second arm, 54 is a first motor, 55 is a second motor, 60 is a screw,

Claims (1)

[Claims] 1) A driving part is attached to the lower part of the bracket, and a guide rail 41 driven by the driving part to align and supply parts is fixed almost horizontally to the lower part of this driving part. Parts alignment and feeding device. 2) The drive unit is a vibrating unit 42 that vibrates the guide rail 41
The parts alignment and supply device according to claim 1, characterized in that: 3) The parts aligning and feeding device according to claim 1 or 2, wherein the guide rail supports the lower surface of the head of the part and has a spacing that allows the legs to hang down. 4) Component alignment according to claim 1, 2, or 3, characterized in that the guide rail has a head holder 44 extending upward along the guide rail to prevent the components from flying out. Feeding device.