JPH068003A - Bar supply device to bar supply machine - Google Patents

Abstract

PURPOSE:To supply bars one by one to a delivery guide of a bar supply machine by way of stocking a plural number of the bars. CONSTITUTION:This device is constituted by providing an inclined base 28 adjacent to a delivery guide 13 and an ejection stopper 31 to load only one bar on the inclined base 28 and by providing a guide wall 41 extending from the head part of the inclined base 28 downward, an ejection member 43 vertically moving along the guide wall 41 and a bar storage part 46 capable of stocking a large number of bars and supplying the bars to the ejection member 43, and it is devised to raise the ejection member 43, load one bar 20 on an inclined base 18 and thereafter, to deliver the bar 20 to the delivery guide 13 by retreating the ejection stopper 31.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for supplying a bar material to a bar material supplying machine for supplying a bar material to be machined to a spindle of a machine tool, particularly an automatic lathe, and more particularly to a device for supplying a plurality of bar materials. The present invention relates to a bar material supplying device for a bar material supplying machine for stocking and taking out the bar materials one by one and supplying the bar material to a delivery guide of the bar material supplying machine.

[0002]

2. Description of the Related Art Conventionally, a bar feeder is provided adjacent to a machine tool such as an automatic lathe.
They are supplied one by one into the main spindle of an automatic lathe (for example, Japanese Patent Laid-Open No. Sho 60-71102, Shokai Sho 63).
-189503 gazette).

FIG. 7 shows an example of a conventional bar material feeding machine. The bar material feeding machine generally designated by reference numeral 1 has a main shaft axis line behind a main shaft (not shown) of an automatic lathe. The feeding guide 2 arranged on the same axis, the pushing member 4 for pushing the rear end of the rod 3 held in the feeding guide 2 to push the rod 3 into the main shaft, and the pushing member 4 are driven. A driving device 5 such as a belt is provided. A bar material supplying device 7 for supplying the bar materials 3 to the delivery guide 2 one by one is provided near the bar material supplying machine 1. This bar material feeding device 7 has a belt 8 having projections 8a with a constant pitch and adapted to hold the bar material 3 between the projections 8a, a pulley 9 around which the belt 8 is hung, and a pulley 9 thereof. A drive device (not shown) for intermittently driving the projections 8a by one pitch
And the bar 3 delivered from the belt 8 is delivered to the delivery guide 2
It has an inclined surface 10 that guides you to drop it into
By stocking a plurality of rods 3 between the protrusions 8a of the belt 8, it is possible to feed the rods 3 one by one to the delivery guide 2 of the rod feeder 1. In addition, a plurality of these belts 8, pulleys 9 and the like are provided in parallel at appropriate intervals in the axial direction of the bar material, and long bar materials are held at a plurality of places.

[0004]

However, in the conventional rod feeding device 7, when the rods 3 are stocked, they must be placed one by one on the belt 8, which is troublesome. was there. In addition, since the bar stocks 3 are horizontally arranged and stocked, they occupy many places. Therefore, there is a problem that the stock quantity is small relative to the installation space.

The present invention has been made in view of the above problems, and it is possible to put and stock rods without aligning them and take out the stocked rods one by one. An object of the present invention is to provide a bar material supplying device for a bar material supplying machine which can supply the delivery guide of the supplying machine and can increase the stock amount.

[0006]

DISCLOSURE OF THE INVENTION The present invention, which has been made to achieve the above object, is provided adjacent to a delivery guide of a rod feeder so that a rod can be fed to the delivery guide on the upper surface. An inclined table having an inclined inclined surface, an operating position that allows only one bar to be placed on the inclined table, and a bar placed on the inclined table rolling on the inclined table. An extraction stopper that is movable to an allowed retracted position, a guide wall that extends downward from the top of the tilt table,
The bar has an extraction member that moves up and down along the guide wall and pushes up the bar onto the tilt table, and a bar member accommodating portion that is arranged in the vicinity of the guide wall and accommodates a large number of bar members. The material storage portion has a bar material discharge port formed at the lower end on the guide wall side and a bottom wall inclined so as to send the contained bar material to the upper surface of the take-out member in the lowered position. The gist is the bar material feeder to the feeder.

[0007] Here, it is preferable that the rod member accommodating portion is provided with end walls for regulating both end positions of the accommodated rod member so as to be positionally adjustable.

[0008]

In the bar material feeder having the above-mentioned structure, when a large number of bar materials are put into the bar material accommodating portion and stocked, the bar materials are discharged from the bar material discharge port at the lower end along the inclined bottom wall. Since it is discharged and supplied onto the take-out member waiting in the lowered position, the bar can be lifted and placed on the tilt table by raising the take-out member from that position. On this occasion,
Since the take-out stopper is in the operating position where only one bar can be placed on the tilt table, even if a plurality of rods are put on the take-out member, by returning the take-out member to the original lowered position. , Only one bar remains on the tilt table, and the other bars descend together with the take-out member. Thus, only one bar is supplied on the ramp. After that, by moving the take-out stopper to the retracted position when necessary, one bar on the tilt table is released and rolled on the tilt table to be supplied to the delivery guide. Hereinafter, by repeating the same operation, the rods can be supplied to the delivery guide one by one. Here, since the bar may be simply put in the bar accommodating portion, a large number of bar can be stocked in a small space.

As described above, if the end wall for restricting both end positions of the contained bar is provided in the bar accommodating portion so that the position can be adjusted, the end wall can be located at a position corresponding to the length of the bar. The end walls can be arranged and can be used well for bars of different lengths.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention shown in the drawings will be described below. FIG. 2 is a schematic plan view showing in simplified form a bar feeder for an automatic lathe and a bar feeder for feeding bar to the bar feeder one by one according to the present invention. FIG. 1 is a schematic cross-sectional view of the apparatus in a state in which a push rod portion 14 is moved upward, viewed in the direction of arrow AA in FIG.
FIG. 3 is a schematic plan view showing a part of the apparatus (bar material accommodating portion), FIG. 4 is a schematic sectional view showing a part of FIG. 1 in an enlarged manner, and FIG.
FIG. 5 is a schematic sectional view showing the same portion as in FIG. 4 in a different operating state. Reference numeral 11 is an automatic lathe, and 12 is a rod material feeder arranged behind the automatic lathe. A delivery guide 13 for guiding the rod material, and a rod pushing device for feeding the rod material in the delivery guide 13 to the automatic lathe. And so on. In this embodiment, as the bar pushing device, a device having a push rod portion 14 and a pusher portion 15 is used.

As shown in FIG. 5, the push rod portion 14 is fixed to the slide shaft 14a slidable in the delivery guide 13, the blades 14b attached to the upper surface thereof, and the tip end side of the slide shaft 14a. The push rod 1 that can be inserted into the spindle of the automatic lathe 11
4c (see FIG. 2) and the like, and by releasably connecting the blade 14b to a drive chain (not shown) provided in parallel to the delivery guide 13, the delivery guide 13
It can reciprocate inside. The push rod portion 14 is provided movably in and out of the delivery guide 13, and in order to move the push rod portion 14 in and out of the delivery guide 13, an operating shaft 17 parallel to the delivery guide 13 and a reciprocating rotation thereof. There are provided an air cylinder 18 for causing the operation, a holding arm 19 and the like attached to the operation shaft 17 and capable of holding the push rod portion 14 and turning. The pusher portion 15 has a sliding shaft 15a that slides in the delivery guide 13 and a blade 15b attached to the upper surface of the slide shaft 15a.
It is possible to reciprocate in the delivery guide 13 by connecting to a drive chain (not shown) provided in parallel with.

The push rod portion 14 and the pusher portion 15 having the above structure
The operation of the bar pushing device having the above is performed as follows. That is, the push rod portion 14 is retracted above the delivery guide 13 as shown in FIGS. 1 and 4 (at this time, although not shown, the connection between the blade 14b and the drive chain is released). When the bar is fed into the delivery guide 13, first, the pusher portion 15 (see FIG.
(Refer to FIG. 2) pushes the rod and inserts it into the spindle of the automatic lathe 11, and when the rear end of the rod advances to a position beyond the tip of the push rod 14c, the pusher portion 15 is located behind the rear end of the push rod 14 (see FIG. 2). To the position shown in). Next, the operation shaft 17 rotates to rotate the holding arm 19 downward, and the push rod portion 14 is inserted into the delivery guide 13 (see FIG. 5). After that, the push bar portion 14 moves forward to further push the bar material, and the processing by the automatic lathe is started. Machining of the bar is continued while pushing the bar, and when all the machining is completed, the push bar portion 14 is retracted to the original position (position shown in FIG. 2) and is lifted above the delivery guide 13 by the holding arm 19. Prepare for the next bar supply. In this way, the bar set in the delivery guide 13 is supplied to the automatic lathe.

Reference numeral 25 denotes a bar material supplying device for supplying the bar material to the delivery guide 13 one by one. The bar material supplying device 25 will be described below. Reference numeral 28 is an inclined table provided adjacent to the delivery guide 13 and having an inclined upper surface 28 a so that the bar 20 can be fed into the delivery guide 13. The tilt table 28 includes a substantially vertical side plate 28A,
It is composed of a plurality of protrusions 28B provided so as to protrude from the side plate 28A toward the delivery guide 13 side.

Denoted at 31 is a take-out stopper, which is an operating position (a position shown in FIG. 5) in which only one bar 20 can be placed on the tilt table 28, and the bar 20 rolls on the tilt table 28. Retracted position that allows it to fall (position shown in Fig. 4)
It is provided to be movable. A proximity switch 32 is arranged near the lower end of the take-out stopper 31, and is provided so as to detect the bar 20 placed on the tilt table 28.

Reference numeral 33 denotes a take-out shaft to which a take-out stopper 31 is attached, which is arranged in parallel with the delivery guide 13 and is rotatably attached to the frame 34 near both ends thereof. A plurality of take-out stoppers 31 are attached to the take-out shaft 33 at appropriate intervals. Further, as shown in FIG. 6, a first lever 36 and a second lever 37 are fixed to the end of the extraction shaft 33 with an appropriate angle. When the first lever 36 turns counterclockwise,
Its lower end hits the upper end of the side plate 28A and is prevented from turning any further. Here, as shown in FIG. 6, when the first lever 36 hits the upper end of the side plate 28A, the take-out stopper 31 is placed in the operating position shown in FIG. The mounting position of is determined. The position of the take-out stopper 31 with respect to the inclined table 28 can be adjusted by adjusting the mounting position of the take-out stopper 31 to the take-out shaft 33 in the circumferential direction, whereby the take-out stopper 31 can be adjusted in accordance with the diameter of the bar 20. Position adjustment can be performed.

In FIG. 6, reference numeral 39 denotes an operation lever fixed to the operation shaft 17, which has a pin 40 at its tip.
When the operation shaft 17 is rotated to a position where the push rod portion 14 is mounted in the delivery guide 13, the operation lever 39 is in the position shown by the solid line in FIG. 6, and the pin 40 at the tip is the first lever 36.
The mounting position with respect to the operation shaft 17 is determined so that the operation shaft 17 can be pressed. With this configuration, the push rod portion 14
Is in the delivery guide 13, the first lever 3
Since 6 is constrained by the pin 40, it does not inadvertently turn upward in the clockwise direction, and therefore the take-out stopper 31 turns upward in the operating position shown in FIG. It is possible to prevent it from being discharged to the inside and causing trouble.

In FIG. 6, in the second lever 37, the operating shaft 17 rotates counterclockwise to move the push rod portion 14 into the feeding guide 1.
It is provided at a position where it is pushed up by the pin 40 of the operation lever 39 which turns upward when it is moved upward from 3. Therefore, when the push rod portion 14 is moved upward from the delivery guide 13, the second lever 37 is automatically rotated in the clockwise direction, the take-out stopper 31 is moved to the retracted position shown in FIG. Can be released. Also,
When the operation shaft 17 rotates in the clockwise direction and the operation lever 39 turns downward, the second lever 37 can turn downward. Therefore, the take-out stopper 31, the first lever 36, the second lever 37, etc. Although not shown, the first lever 36 is fixed to the position shown in FIG. 6 by pivoting downward by the force of a spring or the like and the first lever 36 being pushed by the pin 40 of the operation lever 39, and the take-out stopper 31 is It is held in the operating position shown in FIG.

In the above embodiment, the take-out stopper 31 is turned by the rotation of the operating shaft 17, but the take-out stopper 31 may be turned by using a drive mechanism different from that of the operating shaft 17. .

In FIG. 1, the side surface of the side plate 28A forms a guide wall 41 extending downward from the top of the inclined table 28. 43 moves up and down along the guide wall 41,
Is an ejecting member that pushes up on the tilt table 28, and 44 is an air cylinder that moves the ejecting member 43 up and down. The upper surface 43a of the take-out member 43 is inclined toward the tilt table 28 side, and when the take-out member 43 rises, the bar member 20 is held and lifted by the upper surface 43a, and the upper surface 28a of the tilt table 28 is raised.
Can be sent to. Here, the rising position is determined so that the upper surface 43a of the take-out member 43 is substantially an extended surface of the upper surface 28a of the tilt table 28 when the taking-out member 43 is lifted to the uppermost position. The width of the upper surface 43a of the take-out member 43 may be any width as long as at least one rod 20 having the maximum diameter to be handled can be placed thereon, and a width on which a plurality of rods can be simultaneously placed when handling a rod having a small diameter. It does not matter if it is.

Reference numeral 46 is a bar member accommodating portion which is arranged near the guide wall 41 and accommodates a large number of bar members. The rod member housing portion 46 includes a first side wall 48 and a second side wall 4 which are parallel to the guide wall 41.
9 and the bottom wall 50 inclined so that the side of the guide wall 41 becomes lower.
And so on. The lower end of the first side wall 48 on the guide wall 41 side is located slightly above the bottom wall 50, and a bar material discharge port 51 is formed in this portion. The bottom wall 50 extends beyond the first side wall 48 toward the guide wall 41, and only a gap is left between the bottom wall 50 and the guide wall 41 so that the extracting member 43 can pass through. The lowering position of the take-out member 43 is determined so that the upper surface 43a thereof becomes a substantially extended surface of the bottom wall 50 when the taking-out member 43 descends downward. Therefore, as shown in FIG. 1 or 5, the bar 20 is discharged from the bar discharge port 51 along the bottom wall 50, and the upper surface 4 of the take-out member 43 in the lowered position is shown.
3a.

As can be seen from FIG. 3, the bar accommodating portion 4
At both ends of 6, there are provided end walls 53 that regulate the positions of both ends of the housed bar. The end wall 53 is the second side wall 49.
It is provided with a mounting portion 54 and a set screw 55 for movably mounting it, and the mounting position in the longitudinal direction of the rod to be housed can be adjusted. Thus, the end wall 53 can be fixed at a suitable position depending on the length of the bar used.

Next, the operation of the rod feeding device 25 having the above-mentioned structure will be described. A large number of rods 20 are loaded and stocked at appropriate times in the rod accommodating portion 46 provided adjacent to the delivery guide 13. At this time, unlike the conventional device shown in FIG. 7, the rods are not arranged neatly and set at a predetermined position, but they are simply placed in the rod accommodating portion 46 in a stacked state, so that the inserting operation is easy. In addition, a very large number of bar materials can be stocked.

Now, as shown in FIG. 5, it is assumed that the push rod portion 14 is inserted into the delivery guide 13 to push in the rod material previously supplied. Further, it is assumed that the take-out stopper 31 is in the operating position with respect to the tilt table 28, and the take-out member 43 is waiting in the lowered position. A part of the bar stock 20 stocked in the bar stock portion 46 is a bar stock outlet 51.
Is discharged along the bottom wall 50 from the upper surface 4 of the extraction member 43.
3a and the bottom wall 50 are lined up. From this state, the take-out member 43 is lifted by the air cylinder 44, the bar member 20 placed on the pick-up member 43 is lifted, and the bar member 20 is sent onto the tilt table 28. At this time, the upper surface 43a of the take-out member 43 is inclined, but since the guide wall 41 is located on the lower side thereof, the bar 20 can be lifted without any hindrance, and the upper surface 43a has the upper surface 43a.
When the upper surface 28a of the above is substantially extended, the bar can be fed onto the inclined table 28.

The take-out member 43 ascends to the ascending position where the held bar 20 can be delivered onto the tilt table 28, and then immediately returns to the original descending position. Here, since only one bar 20 can be mounted on the inclined table 28 by the take-out stopper 31, the upper surface 43 a of the take-out member 43.
Even if a plurality of rods 20 are placed on the top, only one rod 20 is placed on the tilting base 28, and the other members 20 are taken out.
Go down with 3. Thus, only one bar 20 is placed on the tilt table 28. When the bar 28 is placed on the tilt table 28, the proximity switch 32 provided on the take-out stopper 31 detects the bar 28 and makes it stand by for the next operation. If the proximity switch 32 does not detect the bar (when the bar is not supplied onto the tilt base 28), the air cylinder 44 is actuated again to move the take-out member 43 up and down to tilt the bar. Supply on the table 28.

Next, the bar material (not shown) in the delivery guide 13 is supplied to the automatic lathe 11, and when the processing of the bar material is almost completed, the push bar portion 14 returns to the position shown in FIG. Next, the operation shaft 17 rotates counterclockwise in FIGS. 5 and 6, and the push rod portion 14 is retracted upward from the delivery guide 13 via the holding arm 19. At the same time, the operating shaft 17
The take-out shaft 33 is rotated clockwise by the operation lever 39 and the second lever 37 which are fixed to the take-out stopper 31, and the take-out stopper 31 retracts upward. As a result, as shown in FIG. 4, one bar 20 placed on the tilt table 28 is released, and the bar 20 is rolled on the tilt table 20 and fed into the delivery guide 13. After that, the pusher portion 15 operates to feed the bar material supplied into the delivery guide 13 into the automatic lathe 11.

The bar in the delivery guide 13 is the pusher section 1.
5 is pushed to a predetermined position, and the pusher portion 15
4 returns to the original position (the position shown in FIG. 2), the operating shaft 17 rotates clockwise in FIG.
Set in 3. At the same time, the take-out stopper 31 returns to the original operating position to prepare for the next bar material supply. By repeating the above operation, the bar stock stocked in the bar stock portion 46 is supplied to the delivery guide 13 one by one, and the automatic lathe 1
It is sent to 1 and processed.

In the above embodiment, the bar material feeder of the present invention is used in an automatic lathe. However, the bar material feeder of the present invention is not limited to this application, and the bar material is fed to perform work. It can be used for other machines (rolling machines, centerless grinding machines, etc.) and has a wide range of applications.

[0028]

As described above, in the bar material feeding device of the present invention, a large number of bar materials stocked in the bar material accommodating portion are regulated one by one by the take-out stopper and placed on the inclined table. The rod can be supplied to the delivery guide by retracting the take-out stopper when necessary, and a large number of rods can be stocked in the rod-accommodating section in a small space. This has the effect of facilitating the closing operation.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, which is taken along the line AA in FIG.
Schematic cross-section view

FIG. 2 is a schematic plan view schematically showing an automatic lathe, a bar feeder, and a bar feeder according to an embodiment of the present invention.

FIG. 3 is a schematic plan view showing a part (bar material accommodating portion) of the apparatus.

FIG. 4 is a schematic sectional view showing a part of FIG. 1 in an enlarged manner.

5 is a schematic cross-sectional view showing the same portion as FIG. 4 in a different operating state.

FIG. 6 is a schematic sectional view showing a mechanism for rotating the take-out shaft in the above embodiment.

FIG. 7 is a schematic cross-sectional view showing a conventional bar material feeder and bar material feeder.

[Explanation of symbols]

 11 Automatic Lathe 12 Bar Material Feeder 13 Delivery Guide 14 Push Bar Part 15 Pusher Part 17 Operation Axis 18 Air Cylinder 19 Holding Arm 20 Bar Material 25 Bar Material Supply Device 28 Inclination Table 31 Extraction Stopper 33 Extraction Shaft 36 First Lever 37 Second Lever 39 Operation lever 41 Guide wall 43 Extraction member 44 Air cylinder 46 Bar material accommodating portion 48 First side wall 49 Second side wall 50 Bottom wall 51 Bar material discharge port 54 End wall

Claims (2)

[Claims] 1. A tilt table provided adjacent to a delivery guide of a bar feeder and having an inclined surface on the upper surface so that the bar can be fed to the delivery guide, and 1 on the tilt table. A take-out stopper that is movable to an operating position that allows only one bar to ride, and a retracted position that allows the bar placed on the tilt table to roll on the tilt table; A guide wall extending downward from the top of
The bar has an extraction member that moves up and down along the guide wall and pushes up the bar onto the tilt table, and a bar member accommodating portion that is arranged in the vicinity of the guide wall and accommodates a large number of bar members. The material storage portion has a bar material discharge port formed at the lower end on the guide wall side and a bottom wall inclined so as to send the contained bar material to the upper surface of the take-out member in the lowered position. A bar material feeder to the feeder. 2. The bar member accommodating portion has end walls for restricting both end positions of the bar member accommodated therein, and the end walls are configured to be positionally adjustable. A bar feeding device for the bar feeding machine described.