JPS6214362B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an infeed bar release device for an automatic bar feeder.

An automatic bar material feeder is a device that automatically feeds bar material one by one into an automatic bar processing machine that automatically processes bar material continuously. being developed.

However, the problem with conventional automatic bar feeders is that the infeed bar escapes along the extension of its reciprocating path, so the overall length of the automatic bar feeder has to be increased by the length of the infeed bar. The reason is that we did not obtain the following results.

The length of the infeed bar of an automatic bar material feeder is so long that it occupies a very large proportion compared to the length of the automatic bar material feeder itself, but in recent years, as automatic bar processing machines have become more NC-controlled, As the processing specifications for bar materials become more diverse and the movement range of the main spindle of automatic bar processing machines tends to become longer, the feed bar itself has to be lengthened accordingly. Therefore, if the feeding bar, which is becoming longer, is allowed to escape on the extension of its reciprocating path as in the past, the overall length of the automatic bar material feeding machine will become longer and longer, and the installation This has become a very big problem due to its relationship with space.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a bar material release device that can shorten the overall length of a conventional automatic bar material feeder by the length of the protruding length of the feeding bar.

This object of the invention is achieved by retracting the infeed bar to a position off the reciprocating path rather than retracting it on an extension of its reciprocating path.

Therefore, by providing the feeding bar release device of the present invention, the total length of the automatic bar material feeder can be shortened to approximately the same length as the length of the bar material to be fed.

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

Before going into a specific explanation of the feeding bar release device of the present invention, in order to further clarify the basic concept of the present invention, we would like to introduce an automatic bar material feeder (hereinafter simply referred to as a "bar material feeder") and a bar material feeder. The mutual relationship with an automatic processing machine (hereinafter simply referred to as a "bar material processing machine") will be explained.

FIG. 1 shows a feeding bar relief device 5 of the present invention.
Bar material feeder 10 equipped with 0 (Figures 2 and 3)
FIG. 2 is a schematic diagram showing the relationship between a conventional bar material feeder 10' and a bar material processing machine 12 that operates in conjunction with these bar material feeders. However, for convenience of explanation, the bar material processing machine 12 is shown slightly enlarged compared to the bar material supplying machines 10, 10'.

The bar material processing machine 12 is provided with a spindle, that is, a main shaft 14, a guide 16 that prevents the bar material from swinging during processing the bar material, a table 18 on which a processing tool is mounted, and the like. Of these, the main shaft 14 can move within a certain range _l1 depending on the specifications of the bar material to be processed. On the other hand, feed bar 2
Since it is necessary to feed the bar material through the main shaft 14, at least the length shown in the figure as l ₂ is required, but in reality it is l ₃ due to the relationship with other auxiliary equipment. The length shown in is required.

Although the length of the feeding bar 20 is very long as described above, in the conventional bar material feeder 10', a new bar material group 24 to be fed next (this new bar material group is A finger chuck 28 for grasping the bar material is attached to the tip end 26 of the feed bar 20 (the tip of the feed bar 20 is equipped with a finger chuck 28 for grasping the bar material) in order to take in the bar material one by one from the bar material placed on the supply shelf of the machine. Therefore, the tip of the finger chuck 28 (to be precise) must be moved back on the extension of the reciprocating path of the feed bar 20 to a position beyond the rear end 30 of the new bar group 24 at least. Ta. For this reason, the conventional bar material feeder 10' has to be longer by the protruding length _l4 of the feed bar 20 compared to the bar material feeder 10 equipped with the feed bar release device of the present invention. It turns out.

On the other hand, in the bar material feeder 10 equipped with the feeding bar release device of the present invention, even when taking in bars one by one from a new bar group 24, the feeding bar 20 is It is only necessary to retreat the bar group 24 to a position where it does not protrude from the rear end 30 of the bar group 24. However, if this continues, the feed bar 20 will be located at the position where the next new bar material should be taken in (that is, the reciprocating path of the feed bar), and it will be impossible to take in the new bar material. It becomes possible. Therefore, the feed bar 20 is temporarily released to a position away from its reciprocating path (for example, a position parallel to the reciprocating path) only while a new bar material to be supplied next is taken in. . That is, a guide rail (this guide rail is indicated by reference numeral A in FIG. 3), which is housed so that the feed bar 20 can slide together with the feed bar 20, has a function of supporting and guiding the bar material. ) is kept away from the reciprocating path of the feed bar. However, simply by letting the feed bar 20 and guide rail A escape, it is still not possible to introduce a new bar material 24.
The reason is that the guide rail A for inserting and supporting the bar material has escaped.
Therefore, at the same time that the feed bar 20 and the guide rail A escape, another guide rail B (FIG. 3) is positioned on the original reciprocating path. However, with this alone, it is impossible to automatically supply the bar material to the bar material processing machine by the bar material supply. The reason for this is that the rear end 30 of the newly supplied bar material is located far behind the tip 34 of the finger chuck 28 of the feed bar 20 that has already been released. This is because it is impossible to grip it with the trigger chuck 28. For this purpose, a feed plate 51 is provided that can slide in the guide rail B newly positioned on the original reciprocating path, and the feed plate 51 pushes the rear end 30 of the bar material while escaping. The rear end 30 of the bar material is moved forward so as to be positioned in front of the tip of the finger chuck 28 of the feeding bar. Therefore, if the escaping feed bar 20 is returned to its original reciprocating path (at the same time as this return movement, the guide rail B and the feed plate 51 therein will escape to a position away from the reciprocating path). , the bar material and the infeed bar 20 are aligned in a straight line on the reciprocating path of the infeed bar, and the rear end 30 of the bar material is located in front of the finger chuck 28, so that the infeed bar can be moved in the same manner as before. When the bar material 20 is moved forward, the rear end 30 of the bar material is inserted into the finger chuck 28, and from then on, the bar material can be supplied to the bar material processing machine 12.

The above is a general description of the feed bar relief device of the present invention, but the feed bar relief device 50 of the present invention will be specifically explained based on the schematic plan view of FIG. 2 and the perspective view of FIG. 3.

FIG. 2 shows the feeding bar relief device 5 of the present invention.
2 is a schematic plan view illustrating a process of automatically and continuously supplying bar material to a bar material processing machine 12 by a bar material supplying machine 10 equipped with a bar material feeder 10 equipped with are indicated by the same number.

FIG. 2 1 shows the remaining bar material (remaining material) 40 after all processing has been completed by the bar material processing machine 12.
However, the finger chuck 28 of the feed bar 20
The leftover material 40 is shown falling back into the leftover material receiving box 41 while being held by the handlebars. The rear end 32 of the feed bar 20 is retracted along the reciprocating path C of the feed bar 20 to a position where it does not protrude from the rear end 30 of a new bar group 24 to be supplied next. Number 42 is a guide rail fixed to the bar material feeder 10.

FIG. 2 shows the operation of the feeding bar release device 50 of the present invention in order to newly supply bar material;
The feed bar 20 and its guide rail A,
It shows the position where the ball is released to a release position C' which is off the reciprocating path C. Feeding bar 20
At the same time, the guide rail A is released to the relief position C', and at the same time, the bar material 24' (FIG. 2, 3), which has been taken in, is transferred to the short cut position D ( Figure 2 4)
The feed plate 51 for advancing the feed plate 51 and the guide rail B that accommodates the feed plate 51 are integrally positioned.

The feed plate 51 is made of a newly adopted bar material 24'.
Since the bar is simply pushed forward by pushing the rear end, its wall thickness may be thin enough to maintain its strength, and it does not need to be as long as the feeding bar 20. When the guide rail B is positioned on the reciprocating path C, the feed plate 51 is positioned slightly behind the rear end 30 of the bar group 24,
The bar material 24' to be supplied next is not obstructed.

FIG. 3 shows a state in which the bar material 24' is newly inserted into the guide rail B and the fixed guide rail 42.

FIG. 2 shows the tip of a new bar material 24' being advanced to the short cut position of the bar material processing machine 12 by the feed plate 51.

FIG. 2 5 shows the guide rail A and the feed bar 20, which had been released to the release position C', returned to the original reciprocating path C. After that, the feed bar 20 is moved forward and the feed bar 20 is moved forward. While gripping the rear end of the bar material 24' with the inger chuck 28, the bar material 24' is gradually fed in accordance with the machining process of the processing machine 12.

FIG. 3 is a perspective view showing a state in which the feed bar release device 50 of the present invention, which performs the operations described above, is mounted on the bar material feeder 10.

In the illustrated state, the feed bar 20 itself is housed within the guide rail A, so the feed bar 20 itself cannot be seen.
The feed bar 20 is fixed to a feed arrow 21 provided at its rear end. The feed arrow 21 can be connected to and disconnected from a chain 23 for reciprocating the feed bar 20, but this is a well-known type that is also used in conventional bar material feeders. Detailed explanation will be omitted.

Another guide rail B is provided substantially below the guide rail A, and a feed plate 51 is accommodated within this guide rail B. The feed plate 51 is
The drive motor 25 and chain 27 cause reciprocating movement. In reality, a guide plate is provided that allows the feed plate 51 to reciprocate along the bar feeder 10, but this guide plate is omitted for clarity of illustration.

The drive motor 25 and the left sprocket 29 are fixed to a support member 52, which will be described later, via a suitable support bracket, so that they move together with the support member 52.

The upper and lower guide rails A, B are fixed to a pair of left and right bifurcated arms, or support members 52, which are opened at a certain angle, and both guide rails A,
B are arranged at regular intervals.

In the illustrated state, the guide rail B is the reciprocating path C of the feed bar 20 (this reciprocating path C
is the path along which the bar material 24' is sent to the bar material processing machine, which also coincides with the bar material path of the fixed guide rail 42). That is, the guide rail A and the feed bar 20 are shown escaping to the escape position C'.

Support member 52 that fixes guide rails A and B
is pivotally supported by a support bracket 53 fixed to the bar feeder 10. The pair of left and right support members 52 are integrally fixed to each other by a shaft 54. A gear is fixed to the shaft 54,
This gear 55 is meshed with a gear 57 attached to the shaft of a drive motor 56. Therefore, by rotating the drive motor 56 in the forward or reverse direction, the support member 52 pivots within a certain range, moving the guide rail A and the feed bar 20 to either the reciprocating path C position or the relief position C'. It is designed so that it can be positioned at Guide rail A
and when the feed bar 20 is positioned on the reciprocating path C, the other guide rail B
Naturally, the feed plate 51 is released to another release position C''.

In the embodiment described above, guide rails A, B
Although the support member 52 supporting the
It is clear that the supporting member 52 may be driven up and down by a hydraulic cylinder (not shown) instead of the gear pair 55, 57.

In addition, the positions of guide rails A and B are reversed, and guide rail A on which the feed bar 20 runs
It is also possible to arrange it so that the guide rail B on which the feed plate 51 runs is on the bottom and the guide rail B on which the feed plate 51 runs is on the top.

Since the guide rail release device 50 of the present invention is configured as described above, its overall length can be significantly shortened compared to conventional bar material feeders.
Moreover, the guide rail relief device 50 of the present invention includes:
Bifurcated arm (support member) 5 pivoting around the shaft 54
Since the feed bar 20 can be released above the bar material feeder 10 by the pivoting movement of 2, the overall width of the bar material feeder 10 does not need to be increased, and therefore the guide rail release device 50 is provided. It is also possible to prevent an increase in the installation space of the bar material feeder 10 due to this.

[Brief explanation of the drawing]

FIG. 1 is a schematic front view showing the mutual relationship between a bar material feeder and a bar material processing machine. FIG. 2 is a schematic plan view illustrating the operation of the feeding bar relief device of the present invention. FIG. 3 is a perspective view showing a bar material feeder equipped with a feeding bar release device of the present invention. 50... Feed bar relief device, 51... Feed plate, 52... Support member, A, B... Guide rail.

Claims (1)

[Claims] 1. A bar equipped with a feed bar 20 that reciprocates along a fixed reciprocating path C to grasp bar materials and automatically feed the bar materials one after another to an automatic bar processing machine 12. In the feed bar release device 50 of the automatic material feeder 10, the guide rail A that slidably accommodates the feed bar 20 and the feed plate 51 that advances the bar material to the short cut position D of the automatic bar processing machine 12 are slid. Each guide rail A, B is fixed to each arm of a bifurcated arm 52 that is open at a certain angle to each other, and the bifurcated arm 52 has a guide rail B that can be accommodated freely. is supported by the bar material automatic feeder 10 so as to be able to pivot around a shaft 54, and when either one of both guide rails A, B is on the reciprocating movement path C of the feed bar, the other guide rail is An infeed bar relief device for an automatic bar feeder, characterized in that it is pivoted about the shaft 54 so that one side occupies a position C' out of the reciprocating path C.