JPH0688164B2 - Bar feeder - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bar material feeder, and more particularly to a bar material processing machine for sequentially manufacturing various machine parts such as screws and rods from a long bar material. The present invention relates to a bar material feeder for supplying a bar material while moving it in the axial direction.

Conventional technology The bar feeder is a machine for supplying long bar (translation 2-3m) to the bar processing machine, so its total length is long and it is placed adjacent to the bar processing machine. Therefore, a large installation space is inevitably required to install the bar material feeder together with the bar material processing machine. Further, in the bar feeder, each bar placed on the shelf of the feeder is received in the guide rail one by one, and the rear end of the received bar is inserted into the finger chuck provided at the tip of the feeding bar. The feed bar is configured to feed the bar toward the bar processing machine, but in order to insert the rear end of the bar received in the guide rail into the finger chuck, the bar should be It is necessary to let it escape from the rear end of the feeder to the position where it projects, and not only the machine space to actually install the bar feeder,
There was also a need for a space in which the feed bar could project and escape from the rear end of the bar feeder.

Therefore, in order to solve such a problem in the installation space, a bar configured not to project the feeding bar from the rear end portion of the bar feeder to allow it to escape, but to allow it to escape to the side part of the bar feeder A material feeder has been developed, for example, one disclosed in Japanese Patent Application Laid-Open No. 59-107804 by the present applicant. As shown in FIG. 3, this bar feeder has a base 2 supported on legs 1, a shelf 3 and a guide rail 4 supported by the base 2, and is mounted on the shelf 3. Of the placed bar members 5, the frontmost bar member 5a is dropped into the guide rail 4,
The rear end of the bar that has fallen into the guide rails 4 and 4a is advanced by a pusher 9 in a direction indicated by an arrow A, and the bar is clamped by a clamp device (not shown). FIG. 3 shows only a so-called "blade" of the feeding bar, which is located inside the guide rail 4a.) The bar material is supplied in the direction indicated by the arrow A toward the arranged bar processing machine (not shown). Third
As is clear from the figure, the guide rails of this bar feeder have a guide rail 4 which occupies almost half the length in the front of the machine (the direction indicated by arrow A) and a length of approximately half the rear. It consists of two guide rails 4a and 4b which occupy. The guide rail 4 is fixed to the base 2, but the guide rails 4a and 4b are swingably supported on the base 2.
It is supported by 7a and 7b, and C, C'by the drive motor 8.
And C ″, that is, the position of C is the position where either one of the guide rails 4a or 4b is aligned with the front guide rail 4 and the position of C ′ is the pusher. 9 is a position where the guide rail 4a escapes when the guide rail 4b is aligned with the position C so as to advance the bar to a predetermined position. The position C ″ is set by the feeding bar 6 to move the bar to the bar processing machine. This is the position where the guide rail 4b escapes when the guide rail 4a is aligned with the position C so as to move forward. That is, in this bar material feeder, the guide rails 4a and 4b are configured to swing in the side direction of the machine to allow the guide rails 4a and 4b to escape. Can be reduced.

DISCLOSURE OF THE INVENTION PROBLEM TO BE SOLVED BY THE INVENTION However, in the conventional bar material feeder, a guide rail for supporting the bar material to be supplied is necessarily provided, and the bar material is processed by the bar material processing machine. Since the space is supported within the guide rail, the following problems occur.

That is, the first problem is that when the feeding bar 6 is released to the position C ', the blade 6a of the feeding bar 6 (this blade 6a
Is shown in FIG. 4, but can be engaged and disengaged with a chain for reciprocating the feed bar.)
Must be engaged with the chain when it is disengaged from the chain and returned to the position C (processing line position) again, so it must be confirmed whether or not the blade 6a and the chain are completely engaged. If they do not engage, the bar feeder may not operate or cause malfunction. Therefore, it was unreliable to use as a bar feeder used in an NC-controlled unmanned factory in recent years.

The second problem is that in order to allow the feed bar 6 to run in the guide rail, the guide rail is provided with the groove 10 as shown in FIG. 4, and the connecting portion 6b between the feed bar 6 and the blade 6a can pass through. Therefore, due to the rotational vibration of the feeding bar 6 that occurs during the processing of the bar material, the connecting portion 6b is not grooved.
It comes in contact with 10 and makes a lot of noise during processing.

Another problem is that the bar rolls on the slope of the shelf and the guide rail
Although it falls into 4b, the impact sound with the guide rail is intense due to the acceleration until it falls into the guide rail 4b, and if the diameter of the bar is large, it causes the roll of the bar feeder itself and causes danger. That is.

Therefore, an object of the present invention is to provide a bar feeder that can solve the above problems.

In order to achieve this object, according to the present invention, in a bar material feeder for moving and supplying the bar material in the axial direction of the bar material processing machine arranged adjacent to the bar material supplying machine, On the base of the bar feeder, a slide base movable in the lateral direction of the bar feeder, which is orthogonal to the bar feeding direction, is attached. A bar material mounting member having an open upper half for receiving and mounting bar materials from a shelf one by one, and a bar material rear end part mounted on the bar material mounting member are bar materials. A pusher for pushing the rear end of the bar to the bar clamp device so that it is clamped by the bar clamp device provided in front of the feeder, and the rear end of the bar clamped by the bar clamp device is gripped. The feed bar for feeding the bar toward the bar processing machine and the feed bar are moved forward. A drive device is attached, and the bar-placing member and the feed-in bar are arranged on the slide base at a constant interval in the lateral direction of the bar-feeding machine, and the slide base is attached. By moving the bar material feeder in the lateral direction, the bar material placing member receives a bar material from the shelf of the bar material supplier, a position where the pusher pushes the bar material, and the feed bar is a bar. There is provided a bar material feeder, wherein a positioning device for positioning the slide base is provided at a position for feeding the bar material toward the material processing machine.

In the bar feeder according to the present invention having the above-described configuration, the guide rail for supporting the bar during the processing of the bar can be completely omitted, so that the noise caused by the contact between the feeding bar and the guide rail can be eliminated. Can be eliminated. Further, since the chain drive device for driving the feed bar can be arranged on the slide base together with the feed bar, it is not necessary to detach the feed bar from the chain disturbance device even when the feed bar is moved horizontally to escape from the machining line position.
Therefore, the engagement / disengagement operation of the feeding bar and the chain disturbance device and this malfunction can be eliminated. Further, since the bar material placed on the bar material mounting member from the shelf is horizontally moved to the processing line position while being mounted on the bar material mounting member, the impact when the bar material is supplied from the shelf is impacted. It is possible to eliminate the sound and roll of the bar feeder.

EXAMPLE FIG. 1 shows the overall structure of a bar feeder 20 according to the present invention, and FIG. 2 shows a cross-sectional structure.

The bar material is supplied in the arrow F direction (forward direction) by the bar material supplying machine 20, and the bar material is processed by a bar material processing machine (not shown) arranged adjacent to the front side in the F direction. A base 22 is supported on the legs 21 of the bar feeder 20.
A slide base 23 is supported on the top. The slide base 23 is placed on a rail 24a of a fixed base 24 fixed to the base 22. The rail 24a extends in a direction orthogonal to the rod feeding direction (direction of arrow F), and the slide base 23 is moved by a cylinder drive device 25 provided between the fixed base 24 and the slide base 23. It is possible to move horizontally in a direction orthogonal to the supply direction of the bar material. A slide bearing 23a is interposed between the rail 24a and the slide base 23 in order to reduce the sliding friction resistance between the rail 24a and the slide base 23 so that the slide base 23 can be horizontally moved quickly with a small force.

On the slide base 23, as clearly shown in FIG.
A guide rail 27 is fixedly attached via a support member 26. The guide rail 27 has two front and rear slide units 28a, 28b (Fig. 1) and a ball bearing 29 (Fig. 2).
It is slidably supported via. A guide bush 45 is suspended on the front slider unit 28a via a bracket 31a, and the guide bush 45 slidably holds the feeding bar 30. Also, the rear slider unit
A feed-in bar support 46 is suspended from 28b via a bracket 31b. The rear end portion of the feed bar 30 is fixedly supported by the feed bar support 46. Although FIG. 2 shows the feed bar support 46 fixed to the bracket 31b, an elastic body may be interposed between the two so as to absorb the vibration of the feed bar during processing. Good. Also, as shown in FIG. 1, the slide base
On the 23, sprocket 32a, 32b is provided near the front and rear ends of the bar feeder, and both sprockets 32a, 32b are provided.
A drive chain 33 (Figs. 1 and 2) is stretched between the two. The sprocket 32b is driven by a drive motor 34 mounted on the slide base 23 near the rear end of the machine. The rear slider unit 28b is fixed to one position of the drive chain 33, and the front slider unit 28a is pushed forward by the convex link 47 (FIG. 1) of the chain. Therefore, when the drive chain 33 is driven in the forward direction by the drive motor 34, the rear slider unit 28 fixed to the drive chain 33 is moved.
b and the feed bar 30 fixed to the slider unit 28b are moved forward, and at the same time, the forward slider unit 28a is also pushed forward by the convex link 47 of the drive chain. The front slider unit 28a supporting the guide bush 45 is
It is stopped at a position near the front end of the bar feeder, but at this time, the convex link 47 of the drive chain reaches a position around the front sprocket 32a, so that it disengages from the front slider unit 28 and is driven. The chain continues to move forward without stopping. Therefore, the feeding bar 30 can continue to move forward.

On the slide base 23, as shown in FIG.
Through the support member 35, a bar member placing member 36 having an open upper half part having a substantially V-shaped cross section is attached. Support member
35 is fixed to the slide base 23, but the bar material placing member 36 is supported by the supporting member 35 so that the height thereof can be adjusted. The height adjustment of the bar-mounting member 36 is performed so that the center of the bar coincides with the center 0 of the feeding bar 30 when changing the diameter specification of the bar to be processed.
This height adjustment is performed by the screw 35a.

The rod mounting member 36 is provided with a stopper 36a. The function of the stopper 36a will be described later. As shown in FIG. 1, another bar material placing member 37 having an L-shaped cross section is provided in the front portion of the bar material placing member 36. Both the bar material mounting members 36, 37 are arranged at positions that are aligned with each other, and the bar material mounting member 37 having an L-shaped cross-sectional shape is processed in the same manner as the bar material mounting member 36 having a V-shaped cross-sectional shape. It is supported by the slide base 23, and the height can be adjusted when changing the diameter specification of the bar to be processed. Incidentally, both bar material mounting member 36,
The functions of 37 will be described in the section of the operation description below.

Further, the position I passing through the centers of the bar material placing members 36, 37 and the feeding bar 30 (the feeding bar 30 as shown in FIG. 1).
(A finger chuck 30a is provided at the tip of the)
The position II passing through the center of is separated by a constant distance D. As will be described later, the position I is a position where the bar 36 is provisionally received by the stopper 36a of the bar placing member 36 from the rack for stocking the bar, and the position II is the bar produced by the bar processing machine. This is a processing line position where the bar is gradually fed into the bar processing machine by the feed bar 30 during the processing of the bar.

Further, a guide rail 39 is fixedly attached to the slide base 23 via a support member 38. This guide rail
A slider 40 is slidably supported on 39, and a pusher 41 is attached to the slider 40. Pusher 41
Is attached to the slider 40 by a screw 42 so that the height can be changed according to the height of the bar placement member 36. Further, the pusher 41 is pivotally attached to the slider 40 so as to be pivotable only in one direction around the axis 41a. That is, the pusher 41 does not pivot when it moves forward, but it can pivot when it moves backward. As shown in FIG. 1, in front of the slide base 23
Sprockets 43a and 43b are provided near the rear end, and a drive chain 44 (Figs. 1 and 2) is stretched between the sprockets 43a and 43b. The rear sprocket 43b is driven by a drive motor 48 attached to the slide base 23. Slider 40 is a drive chain
It is fixed to the drive chain 44 at one place of 44,
It is adapted to be reciprocally driven by the drive motor 48 along the guide rail 39.

As shown in FIG. 2, the fixed base 24 on the base 22 is provided with a shelf 49 for stocking the bar stock.
The upper surface of the shelf 49 is an inclined surface, and a bar material mounting plate 50 is attached to the position adjacent to the shelf 49 along the inclined surface. The inclined surface 50a of the bar material mounting plate 50 is slightly higher than the inclined surface of the shelf 49, and the bar material 51 is the inclined surface 50 of the bar material mounting plate 50.
placed on a. The bar 49 is attached to the shelf 49 via the shaft 52.
Is installed. The bar pressing plate 53 can rotate around the shaft 52, and when the bar 51 is placed on the inclined surface 50a of the bar mounting plate 50, the bar pressing plate 53 is rotated laterally around the shaft 52. In addition, when the placement is completed, the device is returned to the position shown in the figure and fixed at this position by the screw 54. A height regulating plate 53a is attached to the bar pressing plate 53, and when changing the diameter specification of the bar to be machined, the bar to be newly machined is placed on the shelf 49.
When the bar material pressing plate 53 is lowered along the shaft 52 until the lower surface of the height regulating plate 53a and the outer peripheral surface of the bar material come into contact with each other, the bar material pressing plate 53 and the bar material mounting plate 53a are placed. It is possible to set an appropriate gap with the mounting plate 53. If the screw 55 is tightened at this position, the bar pressing plate 53 is maintained at a constant height.

In order to take out the rods 51a located in the front row of the rack one by one, the gap between the hook portion at the tip of the rod mounting plate 50 and the tip of the rod pressing plate 53 should be taken out. It is necessary to make C a proper gap. In order to index this proper gap C, the bar material to be processed is put into the groove 49a of the shelf 49, and the bar material mounting plate 50 is contacted with the outer peripheral surface of the bar material mounting plate 50 until the rear end surface of the bar material mounting plate 50 contacts the bar material mounting plate. It suffices to move the 50 along the long hole 50b.
It can be done in a very simple way as well as the indexing of 3 height positions. Once the gap C has been indexed, screw 56
To fix the bar mounting plate 50.

At a position adjacent to the bar material mounting plate 50, a take-out arm 57 for picking up the bar materials 51a located in the front row of the shelf one by one and taking them out from the gap C is provided. The take-out arm 57 is fixed to a shaft 58 as shown in FIG. 1 and is pivoted about the shaft 58. The pivoting movement of the take-out arm 57 is provided by a cylinder drive 59 mounted between the take-out arm 57 and the base 22. Therefore, when the take-out arm 57 is pivoted upward around the shaft 58 by operating the cylinder driving device 59, the push-up piece 60 provided at the tip of the take-out arm 57 causes the bar member located in the front row on the shelf. Push up 51a. As a result, the bar 51a rolls on the bar take-out guide 49b provided in front of the shelf 49 and stops at a position where it hits the stopper 36a of the bar placement member 36 as shown in FIG. At this time, since the pusher 41 is near the rear end of the bar feeder as shown in FIG. 1, it does not prevent the bar from rolling on the bar take-out guide 49b. In this way, since the bar is temporarily held on the take-out guide 49b of the shelf at the position where it hits the stopper 36a and does not drop into the bar-placing member 36 all at once, when the bar is taken out one by one. The impact of can be eased. The bar moves the slide base 23 in the lateral direction (to the left in FIG. 2), that is, in the direction orthogonal to the feeding direction of the bar, so that the bar placing member 36 is moved from the position I in FIG. When it is moved to the position II, it is automatically dropped into the bar material placing member 36. That is, the bar material placing member 36 is located at the position II.
When it moves toward, the bar rolls on the bar extraction guide 49b while hitting the stopper 36a, and when it reaches the position II, it falls from the bar extraction guide 49b into the bar placement member 36. is there.

In FIG. 1, reference numeral 61 is a bar clamp device, 62 is a residual material box for storing the remaining part (remaining material) of the bar material after processing, and 63 is a control box.

Next, a series of operations of the rod material feeder 20 of the present invention will be described.

(1) Taking-out work of the bar material 51a in the front row on the shelf into the bar material placing member 36 Turn on the main switch of the bar material feeder 20, operate the cylinder drive device 59, and move the take-out arm 57 to the shaft 58. By pivoting it upward around the bar, one bar 51a in the front row is lifted and rolled on the bar take-out guide 49b. The bar rolls to a position where it hits the stopper 36a, and stops there temporarily. Next, the cylinder drive device 25 is operated to move the slide base 23 by a distance D in a direction orthogonal to the feed direction of the bar material, that is, in the direction from position I to position II in FIG. The material placing member 36 is positioned from the position I to the position II shown in FIG. As a result, the bar rolls further on the bar take-out guide 49b, and finally the support by the bar take-out guide 49b disappears, so that the bar falls into the bar mount member 36 and is taken out into the member 36. .

(2) Work of inserting the rear end of the bar into the finger chuck 30a provided at the tip of the feed bar 30 As described above, the bar placing member 36 is positioned at the position II (processing line position) (this When the infeed bar 30
Is escaping from position II to the left by distance D),
The pusher 41 is advanced to the position indicated by B in FIG. 1 by operating the drive motor 48 (FIG. 1). That is, this position B is a position where the rear end portion of the bar member is projected to the rear of the bar material clamp device 61 by a predetermined length 1 as in the conventional case. Next, the bar clamp device is operated at this position to clamp the bar. At this time, the tip of the bar has entered the main shaft of the bar processing machine.

After completing the bar work, slide base 23
To the original position. As a result, the bar material placing member 36 is returned to the original position I, and at the same time, the feeding bar 30 is also returned to the position II (processing line). At this time, since the bar material placing member 37 provided in front of the bar material feeder has the L-shaped cross-sectional shape as described above, the lateral movement of the slide base 23 is prevented even if the bar material exists in this portion. There is no hindrance.

While the slide base 23 is moving laterally to return to its original position, the pusher 41 is moved backward to return it to its original position near the rear end of the machine. During this backward movement, pusher
41 may hit the bar material removal guide 49b on the shelf,
As described above, since the pusher 41 is supported so as to be pivotable around the axis 41a when it hits the rod removal guide 49b during the backward movement, the backward movement of the pusher 41 is hindered by the rod removal guide 49b. There is no need to be. In this way, the pusher 41 is moved back during the lateral movement of the slide base 23, and if the pusher 41 returns to the original position, a new bar material to be processed next can be taken out. The set cycle time of the machine can be shortened.

Once the feed bar 30 is set on the machining line at position II, the drive motor 34 for driving the feed bar 30
Is operated to insert the rear end of the bar into the finger chuck 30a provided at the tip of the feeding bar 30. As a result, the bar is gripped by the feeding bar 30.

(3) Work to supply the bar material to the bar processing machine When the bar material is gripped by the feed bar 30, the bar clamp device 61 is opened, and the bar is fed according to the processing speed of the bar processing machine. 30 is advanced and the bar material is supplied along the processing line II.

(4) Disposal of residual material After processing a certain number of mechanical parts from one bar, a short length of residual material (remaining material) is left on the finger chuck 30a of the feeding bar 30, so the residual material is removed. It is necessary to pull out from the finger chuck 30a and discard it. For this reason,
The feeding bar 30 is moved backward until the residual material is located between the clamp claws of the rod clamping device 61, and the residual material is clamped by the rod clamping device 61. When the feeding bar 30 is further retracted in a state where the residual material is clamped, the residual material is pulled out from the finger chuck 30a, and the clamp device 61 is released, so that the residual material falls into the residual material box 62 and is discarded.

As described above, the operation of taking out the bar material in the above (1) is repeated again, and the same cycle is repeated.

As is apparent from the above, in the bar material feeder of the present invention, when the bar material is supplied to the bar material processing machine, the bar material is only supported by the feeding bar, and the conventional guide rail is used. Corresponding members are omitted. In order to more effectively absorb the rotational vibration of the bar during processing, a steady rest may be provided at the front end of the bar feeder or at the rear of the main shaft of the bar processing machine.

Effect The bar material feeder of the present invention is configured as described above,
Since there is no guide rail required in the conventional bar feeder, noise due to contact between the bar and the guide rail can be eliminated during machining of the bar. Further, since it is not necessary to separate the blades of the feeding bar from the chain when the feeding bar is released, it is possible to eliminate the malfunction that is likely to occur in the conventional bar feeder.

Further, when the rods are taken out one by one, the rods do not drop from the shelves into the guide rails all at once unlike the conventional device, but are temporarily stopped by the stopper 36a, and the rods are placed from that position. Since it is dropped inside 36, the impact force and impact noise at the time of dropping can be greatly reduced.

Further, the pusher can be returned to the original position in parallel with the work of returning the slide base 23 to the original position, and the next new bar material can be used during the processing of the bar material, and the next bar material removal guide 49
Since it can be taken out up to the point b, the set cycle time of the bar feeder can be greatly shortened.

[Brief description of drawings]

FIG. 1 is a perspective view showing the overall configuration of a bar feeder according to the present invention. FIG. 2 is a cross-sectional view taken along the line II-II in FIG. FIG. 3 is a perspective view showing the whole of a conventional bar feeder. FIG. 4 is a cross-sectional view showing the relationship between the guide rail and the feeding bar of the conventional bar feeder. 20-bar feeder, 22-base, 23-slide base, 30-feed bar, 36, 37-bar mounting member, 41
…… Pusher, 49 …… Shelf.

Claims (1)

[Claims] Claim: What is claimed is: 1. A bar material feeder which moves a bar material in the axial direction thereof to a bar material processing machine arranged adjacent to the bar material supplier and supplies the bar material to a bar material processing machine. ) On which a slide base (23) which is movable in the lateral direction of the bar feeder perpendicular to the bar feed direction (F) is mounted, and a bar is mounted on the slide base (23). Shelving for feeders (49)
A bar mounting member (36) with an open upper half for receiving and mounting the bar from the bar one by one, and the bar mounting member (3
6) To push the rear end of the bar up to the bar clamp device to clamp the rear end of the bar placed on the bar clamp device (61) provided in front of the bar feeder. A pusher (41), a feed bar (30) for holding the rear end portion of the bar clamped by the bar clamp device (61) and feeding the bar toward the bar processing machine, and the feed bar. And a drive device (32, 33) for advancing the bar material, and the bar material placing member (36) and the feed bar (30) are disposed at a constant distance (D) in the lateral direction of the bar material feeder. And is arranged on the slide base (23) with a space between them, and the rod mounting member (36) supplies the rod by moving the slide base (23) in the lateral direction of the rod feeder. A position for receiving a bar from the shelf of the machine, a position where the pusher (41) pushes the bar, Preliminary said feed bar (30) is bar feeder, characterized in that the positioning device (25) is provided for positioning the slide base (23) in a position for feeding the bars towards the bar processing machine.