JPH0242663Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Purpose of the invention] (Field of industrial application) This invention uses vibration to transport members such as parts and workpieces in a straight line when feeding them to a predetermined position. This relates to a straight feeder.

(Prior art) Conventionally, as a straight feeder as described above,
It is equipped with a mount block equipped with a linear track and a base plate provided with an AC electromagnet, and the mount block is connected to the base plate through a pair of leaf springs that are parallel to each other and tilted high in the direction opposite to the conveyance direction of the member. I found something that made me support it. This linear feeder is constructed by passing an alternating current through the AC electromagnet, and by the electromagnetic force having a predetermined frequency generated in the AC electromagnet, an iron piece installed on the mounting block with a slight gap from the AC electromagnet is generated. is intermittently attracted to induce resonance in the leaf spring, thereby vibrating the track together with the mount block along the longitudinal direction of the track, thereby moving the member on the track in a straight line. .

Further, the amount of vibration of the track in the linear feeder has been adjusted by means such as voltage control using a slider and waveform control using a cycler.

In addition, such a straight feeder is used in the "Latest Parts Supply Technology Overview Editorial Committee, Latest Parts Supply Technology Overview, Industrial Technology Service Center Co., Ltd. 1988
Published on April 17, 2015, pages 151 to 160.

(Problem to be solved by the invention) However, in the conventional linear feeder as described above, the driving source for vibrating the truck is an AC electromagnet, so when adjusting the amount of vibration of the truck, the above-mentioned method is required. This requires a voltage control device such as a slider, a waveform control device equipped with a thyristor, etc., and a large amount of power is consumed when the track is vibrated by the AC electromagnet, so the device cost and supply cost are high. The problem was that it was expensive.

(Purpose of the invention) This invention was made by focusing on the above-mentioned problems, and it is possible to adjust the amount of vibration of a truck easily and inexpensively, and also vibrate the truck with a small amount of electric power. It is an object of the present invention to provide a straight feeder that is capable of reducing equipment costs and supply costs.

[Structure of the invention] (Means for solving the problem) The structure of the linear feeder according to this invention consists of a mount block equipped with a linear track (including a roughly linear track), and a plate spring that connects the mount block. The mount block is provided with an adjustment bolt that is movable along the longitudinal direction of the track, and the base is provided with an adjustment bolt that is movable in the axial direction of the motor output shaft and the adjustment bolt. A motor is installed in a direction perpendicular to the screw axis direction of the motor, a radial bearing is mounted eccentrically on the motor output shaft of the motor, and the adjustment bolt is pressed by the leaf spring on the outer race side of the radial bearing. It is characterized by being powerful.

(Example) This invention will be explained below based on the drawings.

Figures 1 to 3 show a linear feeder according to an embodiment of this invention, and in this embodiment,
An example will be described in which a linear feeder according to this invention is connected to a feeding mechanism of a differential speed rolling machine to supply bolt material to the differential speed rolling machine.

That is, as shown in FIGS. 1 and 2,
The linear feeder 1 includes a base plate 3 having a motor 2 and a mount block 5 equipped with a linear track 4 for moving a member (in this case, a bolt material W).

More specifically, the base plate 3 has a rectangular shape, and the upper surface 3c at both ends 3a and 3b has an inclined surface 6 on the left edge side in FIG.
pedestals 6, 6 having bolts 7, 6a are fixed with bolts 7. The pedestals 6, 6 are arranged in such a way that the leaf springs 8, 8 are tilted in a direction opposite to the direction of conveyance of the bolt material W (rightward in FIG. 1). They are fixed to the base plate 3, respectively.

Further, a motor 2 is fixed on the left side of the upper surface 3c of the base plate 3 in FIG. Moreover, it is fixed so as to be located within the opposing surfaces of the leaf springs 8, 8 attached to the pedestals 6, 6.

On the other hand, the mount block 5 is mounted on the pedestal 6.
The mount block 5 has a rectangular shape having the same axis as the mount block 5, and pedestals 6, 6, which are the same as the pedestal 6 provided on the base plate 3, are provided on the lower surface 5c at both ends 5a, 5b of the mount block 5, and have respective inclined surfaces 6a, 6. 6a
are fixed by bolts 7, 7, respectively, facing in the same direction. And this mount block 5
The other ends 8b, 8b of the plate springs 8, 8, with one end 8a, 8a fixed to the base plate 3 side, are attached to the respective inclined surfaces 6a, 6a of the pedestals 6, 6 provided on the mount block 5 with bolts 7, 7. By fixing it to the base plate 3, it is elastically supported by the base plate 3. That is, the mounting block 5 is supported by the base plate 3 above the base plate 3 and in a parallel movement relative to the base plate 3 in a direction opposite to the conveying direction of the bolt material W. .

Further, on the left side of the lower surface 5c of the mount block 5 in FIG. 1, an approximately L-shaped angle member 10 is fixed by screwing or welding (in this case screwing) one piece 10a of the angle member 10. An adjustment bolt 11 is attached to the other piece 10b of the angle member 10 that extends below the mount block 5.
is provided so as to be movable along the longitudinal direction of the mounting block 5. The adjustment bolt 11 is connected to the screw axis of the base plate 3.
The adjustment bolt 11 is provided so that the axial direction of the output shaft 2a of the motor 2 provided in the motor 2 intersects with the axial direction of the motor 2. The outer race 12a side of the radial bearing 12 mounted on the output shaft 2a of No. 2 is pressed and biased. In this case, the radial bearing 12 is
As shown in the figure, it is attached to a cylindrical member 13 that is fitted and fixed to the output shaft 2a of the motor 2 with an eccentric distance d, and the eccentric cylindrical member 13 is mounted on the output shaft 2a of the motor 2 through a radial bearing 12. , leaf springs 8 and 8 that convert the output of the motor 2 into eccentric motion and transmit it to the mount block 5 via the adjustment bolt 11 and the angle member 10, and support it;
The mount block 5 is made to vibrate by the repulsive force of the mount block 5. Further, at this time, the amount of vibration of the mount block 5 can be easily changed by moving the adjustment bolt 11 within the range of the eccentric distance d between the output shaft 2a of the motor 2 and the center of the radial bearing 12. The adjustment bolt 11 is fixed by tightening a nut 11b attached thereto to the other piece 10b of the angle member 10. Note that when the mount block 5 is vibrated, the adjustment bolt 11 transmits only the horizontal component of the eccentric movement of the radial bearing 12 to the mount block 5. There is no unnecessary vertical vibration.

Furthermore, the mount block 5 vibrating as described above has a plurality of (four in this embodiment) brackets 14, 14, 1 provided on its upper surface 5d.
The truck 4 and the conveyor chute 15 are attached via 4 and 14. In this case, the bracket 14 is approximately L-shaped, and one piece 14a of the bracket 14 is attached to the second piece of the mount block 5.
It is fixed to the upper surface 5d of the mount block 5 in a state of protruding to the left side in the figure, and one piece 14a of each bracket 14, 14, 14, 14,
14a, 14a, 14a are arranged parallel to the longitudinal direction of the mount block 5 and located in the same plane.

The track 4 is designed to transport the bolt materials W in an aligned state, and its terminal end 4a
is connected to a feeding mechanism of a differential speed rolling machine 20 to be described later, and the bracket 14, located on the right side of FIG. One piece 1 of 14
It is attached to 4a and 14a. On the other hand, the conveying chute 15 connects its base end (not shown) directly or via a hopper to a machine tool such as a turning machine (not shown) that performs a pre-rolling process, that is, a process of forming the bolt element W into the shape. The conveying chute 15 is located on the left side in FIG. 1 with a slight downward slope in the conveying direction of the bolt material W, similar to the truck 4. One piece 1 of the brackets 14, 14
It is attached to 4a and 14a. The truck 4 and the transport chute 15 are connected in a continuous straight line in a plane approximately at the center of the mount block 5, and are used for controlling the attitude of the bolt material W of the transport chute 15. A step is provided between the terminal end 15b having the notch 15a and the base end 4b of the track 4 so that the bolt material W can be smoothly moved from the transport chute 15 to the track 4. Further, the truck 4 and the transport chute 15 are connected to the brackets 14 and 1.
4, 14, 14, the projecting pieces 4c, 4c and 15c, 15c provided on the truck 4 and the transport chute 15, respectively, are attached to one piece 14a of the corresponding brackets 14, 14, 14, 14. , 14a, 14a, 14a, and one of these pieces 14a, 14
bolts 7, 7, which pass through a, 14a, 14a and the protruding pieces 4c, 4c and 15c, 15c;
This is done by tightening the nuts 7a, 7a, 7a, 7a into the bolt holes 14b, 14b, 14b, formed in the one piece 14a, 14a, 14a, 14a. 1
4b is the one piece 14a, 14a, 14a,
It has a substantially elliptical shape along the longitudinal direction of 14a,
The vertical positions of the track 4 and the transport chute 15 can be adjusted as necessary.

As shown in FIG. 3, the linear feeder 1 as described above rotates the track 4 and the conveying chute 15 mounted on the mount block 5 in the same direction of the differential speed rolling machine 20, and A pair of round dies 22, 22 with different rotation speeds
The base plate 3 is attached to the upper end surface 23 of the drive section (not shown) of the differential speed rolling machine 20 so as to face the side.
It is fixed by screwing it on. At this time, the linear feeder 1 is arranged so that its track 4 and conveyance chute 15 are parallel to the arrangement direction of the pair of round dies 22, 22, and the terminal end 4a of the track 4 is As mentioned above, it is connected to the feed blade guide spring 24 of the feed mechanism in the differential speed rolling machine 20.

The feeding mechanism uses an air cylinder 25 as a driving source, and is fixed to the upper end surface 23 of a drive section (not shown) of the differential speed rolling machine 20 via a moving plate 26 and a fixed plate 27. The air cylinder 25 and the feed blade guide spring 24 of this feeding mechanism are connected to the differential speed rolling machine 20.
The pair of round dies 22, 22 are supported by a cylinder holder 28 and an edge holder 29, respectively, in a direction perpendicular to the direction in which they are arranged.
The bolt material W is moved by sliding the feed blade 31 attached to a cylinder rod (not shown) supported by a rod guide 30 along the feed blade guide spring 24 as shown by the imaginary line in FIG. It is designed to be fed between a pair of round dies 22, 22. In addition, this feeding mechanism
A pair of round dies 22, 22 of the differential speed rolling machine 20
The air cylinder 2 has a synchronizing means (not shown) that detects when the phases of the screw threads match and operates the air cylinder 25.
5 is not operating, a material holding arm 32 that holds the bolt material W on the feed blade guide spring 24, and two stoppers (not shown) that prevent the bolt material W from entering the feed blade guide spring 24. have.

In this feeding mechanism, the movable plate 26 to which the feeding mechanism is fixed is slid in the arrangement direction of the pair of round dies 22, 22 by means of an adjustment plate 33 provided on the fixed plate 27. Its position can be adjusted by.

Therefore, the situation in which the bolt material W is supplied to the differential speed rolling machine 20 by the linear feeder 1 via the feeding mechanism will be explained.

First, the bolt material W, which is conveyed straight from a machine tool such as a turning machine that performs a pre-rolling process by the conveying chute 15 vibrated by the linear feeder 1, is subjected to posture control at the terminal end 15b of the conveying chute 15. Its posture is corrected by the cutout 15a and transferred to the base end 4b of the track 4. This track 4 moves the bolt materials W straight on the track 4 while keeping them aligned. Here, if the amount of vibration of the track 4 is too large or too small, loosen the nut 11b of the adjustment bolt 11 provided on the angle member 10 of the mount block 5, and adjust the adjustment bolt 11 according to the situation. the track 4.
Adjust the amount of vibration. The bolt material W that has reached the terminal end 4a of the track 4 is supplied onto the feed blade guide spring 24 and held by the material holding arm 32 while the air cylinder 25 of the feeding mechanism is not operating. Next, the differential speed rolling machine 20
The air cylinder 25 operates when the threads of the pair of round dies 22, 22 are in phase, and the bolt material W is inserted into the pair of round dies 2.
It is fed between 2 and 22 and subjected to rolling processing. During this time, the material holding arm 32 retreats to the right in FIG. 3, and the stopper operates to prevent the bolt material from being fed onto the feed blade guide spring 24.

As explained above, in this embodiment, the linear feeder 1 of this invention is connected to the feeding mechanism of the differential speed rolling machine 20 to supply the bolt material W to the differential speed rolling machine 20. Although shown as an example, it is not limited to this, and it is also possible to connect the linear feeder 1 according to this invention to another machine tool or a feeding device attached thereto, and it is also possible to connect the linear feeder 1 according to this invention to another machine tool or a feeding device attached thereto. The member to be used is not limited to the bolt material W.

Furthermore, in the linear feeder 1 in this embodiment, the mount block 5 is provided with the track 4.
However, if a bowl-type vibratory feeder is provided adjacent to the linear feeder 1, only the track 4 is attached to the mount block 5.

Furthermore, "straight travel" of the straight feeder 1 does not mean only a completely straight travel state, but also includes a state with some bends.

[Effects of the invention] As explained above, the linear feeder according to the invention includes a mount block on which a linear track is attached, and a base that elastically supports the mount block through a leaf spring. The mount block is provided with an adjustment bolt that is movable along the longitudinal direction of the track, and the base is provided with a motor that is mounted in a direction in which the axial direction of the motor output shaft and the screw axis direction of the adjustment bolt are perpendicular to each other. A radial bearing is installed eccentrically on the motor output shaft of the motor, and the adjustment bolt is pressed and biased by the leaf spring on the outer race side of the radial bearing.
Since the amount of vibration of the track can be easily adjusted without using any other control device, and the track can be vibrated with small electric power, installation costs and supply costs are reduced. This can bring about an extremely excellent effect of making it possible to do the following.

[Brief explanation of the drawing]

1 and 2 are a side view and a front view illustrating a linear feeder according to an embodiment of this invention,
FIG. 3 is a plan view illustrating a situation in which the linear feeder in FIGS. 1 and 2 is connected to a feeding mechanism of a differential speed rolling machine. 1... Straight feeder, 2... Motor, 2a...
Output shaft (motor output shaft), 3... Base plate (base), 4... Track, 5... Mount block, 8... Leaf spring, 11... Adjustment bolt, 12
... Radial bearing, 12a ... Outer race,
...screw axis.

Claims (1)

[Scope of utility model registration request] The mount block includes a mount block to which a linear track is attached, and a base that elastically supports the mount block via a leaf spring, and the mount block is provided with an adjustment bolt that is movable along the longitudinal direction of the track. Also, a motor is installed on the base in a direction in which the axial direction of the motor output shaft and the threaded axial direction of the adjustment bolt are perpendicular to each other,
A linear feeder characterized in that a radial bearing is mounted eccentrically on the motor output shaft of the motor, and the adjustment bolt is pressed against the outer race side of the radial bearing by the leaf spring.