JP7148148B2 - Bar feeder - Google Patents

Description

The present invention relates to a bar feeder for feeding bars to a bar processing machine such as a lathe.

2. Description of the Related Art Conventionally, there has been known a bar material feeder that feeds a bar material to a bar material processing machine by means of a feed member (for example, a feed arrow). The feed member is typically connected to an endless chain wrapped around a sprocket that is rotatably driven by a motor.

As the feed member moves forward along with the running of the endless chain, the bar transferred on the track of the feed member in the feeder is pushed out toward the bar processing machine, and the chuck of the bar processing machine is pushed out. is grasped by After that, the bar is processed as desired by a bar processing machine.

In general, a slanted shelf is provided in order to transfer the bar material onto the track of the feed member in the material feeder. A plurality of bars are continuously placed on the slanted shelf, and the lowest bar is pushed up from below and overcomes the stopper wall at the lower end of the shelf, thereby moving the feed member. It is designed to be transferred to orbit.

On the other hand, in recent years, not only long bars (approximately 1000 mm or more in length) but also short bars (approximately 45 mm in length) are sometimes processed in bar processing machines.

The inventor of the present invention shared a guide member on one side (right side or left side) so that a long bar and a short bar can be processed using the same bar processing machine. We have studied the arrangement of having a shelf for the long bars and a shelf for the short bars on the other side (left or right) of it.

The shelf for the short bars occupies a small length in the longitudinal direction of the guide member. Therefore, a large empty space is created at a position symmetrical to the shelf for the long bar.

The inventor of the present invention believes that if short bars can be placed on standby in the empty space in advance and the short bars can be automatically transferred sequentially onto the track of the feeding member, continuous bars for a long period of time can be produced. We came up with the idea that material supply operation would be possible.

The present invention was invented based on the above background. SUMMARY OF THE INVENTION An object of the present invention is to provide a bar feeder capable of continuously feeding bars (particularly short bars) over a long period of time.

The present invention is a bar feeder that feeds a bar to a bar processing machine, comprising: a feed member that pushes the rear end of the bar toward the bar processing machine; A guide member for guiding a bar toward the bar processing machine, a bar transfer device for transferring the bar on the guide member, and a plurality of bar storages each capable of accommodating a plurality of bars. A bucket that supports the plurality of bar storage buckets and sequentially moves each of the plurality of bar storage buckets to a bar delivery position where the bar can be delivered to the bar transfer device. and a moving device.

According to the present invention, each of the plurality of bar storage buckets is sequentially moved to the bar delivery position by the bucket moving device, and the bar can be continuously supplied over a long period of time.

For example, the bucket moving device has an endless member that circulates, and the plurality of bar storage buckets are fixed on the outer surface of the endless member and positioned above the endless member. is also supported by the endless member when positioned downward.

In this case, since the space on both upper and lower sides of the endless member can be utilized, more bars can be kept on standby.

In addition, the plurality of bar storage buckets supported by the bucket moving device may have one of the walls opposed to the length of the bar and/or the top wall positioned according to the size of the bar to be supplied. It is preferable that it is changeable.

In this case, it is possible to expand the variation in the size of bars that can be accommodated by the same type of bar accommodation bucket.

In addition, it is preferable that an erroneous insertion prevention piece can be attached to the plurality of bar storage buckets supported by the bucket moving device in accordance with the shape of the bar to be supplied.

In this specification, the bar material is not limited to a material having a uniform diameter, but includes a material having a large diameter portion and a small diameter portion (called a blank) as shown in FIG. 3, for example. In such a case, it is necessary to pay attention to the direction of the bar when storing (loading) the bar in the bar storage bucket. Here, if the erroneous insertion prevention piece is attached to the bar storage bucket, it is possible to effectively regulate the loading direction of the bar with a simple structure.

Moreover, it is preferable that the plurality of bar storage buckets supported by the bucket moving device are replaceable according to the size of the bar to be supplied.

For example, by preparing a plurality of types of replaceable bar storage buckets, it is possible to greatly expand the variation in size of the bar that can be supplied.

In addition, it is preferable that the bucket moving device supports the plurality of bar storage buckets at regular intervals, and the support intervals of the plurality of bar storage buckets can be changed.

By narrowing the support interval, it is possible to increase the number of bars that can be kept on standby, thereby enabling continuous supply for a longer period of time. On the other hand, if a sufficient space is provided for the support interval, it is easy to load the bars into the bar storage bucket after it has been emptied. Therefore, if the support interval of the bar storage bucket can be changed, the operator can change the support interval according to the operating conditions of the bar feeder, which is convenient.

Further, it is preferable that the bar transfer device is provided with a guide member whose interval can be adjusted according to the length of the bar to be supplied.

In this case, the transfer work of the bar can be carried out more stably.

Further, the present invention is a bar feeder that feeds a bar to a bar processing machine, wherein a feed member for pushing the rear end of the bar toward the bar processing machine; A guide member for guiding the bar to be pushed toward the bar processing machine, and a bar transfer device for transferring the bar onto the guide member, wherein the bar transfer device is tilted. a shelf, a stopper wall defining the lower end of the shelf and retractable downward or forward, an arm arranged to be movable in an acute angle direction with respect to the shelf, and attached to the tip of the arm and a pressing member configured to press and hold a bar next to the bar in contact with the stopper wall against the shelf.

According to the present invention, the bar next to the bar in contact with the stopper wall is pressed and held against the shelf by the pressing member, so the stopper wall retractable downward or forward is adopted as the lower end of the shelf. can do. As a result, the bar can be transferred more stably compared to the conventional structure in which the bar is pushed over the stopper wall at the lower end.

It is preferable that a region of the pressing member for pressing the bar next to the bar in contact with the stopper wall is parallel to the shelf.

In this case, since the next bar to the bar in contact with the stopper wall is more stably pressed and held against the shelf, the bar transfer operation can be carried out more stably.

Preferably, the angle of said shelf with respect to the horizontal plane is between 15 and 20°. Also, preferably, the angle of the moving direction of the arm with respect to the shelf is 30 to 40 degrees.

Further, the present invention is a bar feeder that feeds a bar to a bar processing machine, wherein a feed member for pushing the rear end of the bar toward the bar processing machine; A guide member for guiding the pushed bar toward the bar processing machine, a first bar transfer device for transferring the long bar on the guide member, and a short bar on the guide member. a second bar transfer device for transferring a bar; a plurality of bar storage buckets each capable of accommodating a plurality of short bars; a bucket moving device for sequentially moving each of the material containing buckets to a bar delivery position where short bars can be delivered to the second bar transfer device; and the second bar transfer device are selectively used.

According to the present invention, long bars and short bars can be selectively supplied to a common bar processing machine. By sequentially moving each of the plurality of bar storage buckets to the bar delivery position by the bucket moving device, short bars can be continuously supplied over a long period of time.

According to the present invention, each of the plurality of bar storage buckets is sequentially moved to the bar delivery position by the bucket moving device, and the bar can be continuously supplied over a long period of time.

1 is a schematic plan view of a bar feeder according to one embodiment of the present invention; FIG. However, it is shown with the bar stock bucket removed. 3A-3D are three views of each of four types of bar stock buckets that may be attached to the bar feeder of FIG. 1; FIG. 4 is a schematic diagram showing an example of a material having a large diameter portion and a small diameter portion; FIG. 4 is a schematic diagram showing an example of an erroneous insertion prevention piece; FIG. 3 is a schematic side view showing an example of an endless belt to which the bar storage bucket of FIG. 2 is attached; 2 is a schematic plan view corresponding to FIG. 1, showing an example of a state in which bars are waiting; FIG. FIG. 3 is a schematic cross-sectional view for explaining the operation of the bar transfer device of FIG. 1; FIG. 8 is a schematic cross-sectional view for explaining the operation of the pressing member of FIG. 7; FIG. 5 is a schematic cross-sectional view showing how the bar moves (rolls) when the stopper wall retracts forward; FIG. 5 is a schematic plan view of a bar feeder according to another embodiment of the present invention; However, it is shown with the bar stock bucket removed.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic plan view of a bar feeder 1 according to one embodiment of the present invention. However, the bar storage buckets 21-24 are shown removed.

The bar feeder 1 of this embodiment is a machine that feeds the bar 3 to an adjacent bar processing machine (not shown), and pushes the rear end of the bar 3 toward the bar processing machine. A feed arrow 12 as a feed member, a guide member 11 for sliding (guiding) the bar 3 pushed by the feed arrow 12 toward the bar processing machine, and a guide member when the feed arrow 12 is in the retracted position. and a bar transfer device 4 for transferring the bar 3 onto 11 . The guide member 11 is, for example, a V rail, but may be a U rail, a hollow pipe, or the like.

The bar feeder 1 of the present embodiment supports a plurality of bar storage buckets each capable of accommodating a plurality of bars 3 in an aligned state, and transfers the bars to the bar transfer device 4. A bucket moving device 5 is provided for sequentially moving each bar storage bucket to a possible bar delivery position P (see FIG. 6). The bucket moving device 5 of this embodiment has a drive motor 51, two pairs of pulleys 52, and two endless belts 53 (typical examples of endless members).

FIG. 2 is a trihedral view of each of the four types of bar storage buckets 21-24 that can be attached to the endless belt 53 of the bar feeder 1 of FIG. Each of the bar material storage buckets 21 to 24 includes main body portions 21a to 24a bent into an L shape, opposing walls 21b to 24b that can be changed in position, top walls 21c to 24c that can be changed in position, and not shown. and a pair of side walls. The body portions 21a to 24a and the opposing walls 21b to 24b face each other in the longitudinal direction of the bar 3, and the body portions 21a to 24a and the top walls 21c to 24c face each other in the radial direction of the bar 3. ing. The pair of side walls are opened and closed at arbitrary timings by any known configuration.

The opposing walls 21b to 24b are fixed by bolts or the like to screw holes at suitable positions for the rods to be supplied (to be accommodated) among a plurality of screw holes provided in advance in the main body portions 21a to 24a. be done.

The top walls 21c to 24c are also fixed by bolts or the like to the screw holes at suitable positions for the rods to be supplied (to be accommodated) among the plurality of screw holes provided in advance in the main bodies 21a to 24a. be done.

The bar storage bucket 21 in FIG. 2(a) is for bars with a length up to 50 mm, and the bar storage bucket 22 in FIG. 2(b) is for bars with a length up to 65 mm. The bar storage bucket 23 in FIG. 2(c) is for bars up to 75 mm in length, and the bar storage bucket 24 in FIG. 2(d) is for bars up to 100 mm in length. These dimensions are examples and are not limiting.

Here, the bar 3 is not limited to a material having a uniform diameter, and includes, for example, a material having a large-diameter portion and a small-diameter portion (referred to as an extruded material) as shown in FIG. In such a case, it is necessary to pay attention to the direction of the bar 3 when housing (loading) the bar 3 into the bar housing buckets 21 to 24 .

The bar storage buckets 21 to 24 of this embodiment can be fitted with erroneous insertion prevention pieces 28 in accordance with the shape of the bar 3 to be supplied (stored). As a result, the loading direction of the bar 3 can be effectively regulated with a simple structure. An example of the erroneous insertion prevention piece 28 is shown in FIG. In the example of FIG. 4, the erroneous insertion prevention piece 28 is a spacer member corresponding to the small diameter portion of the bar 3 .

Now, the bar storage bucket 21 of FIG. 2(a) can be attached to the endless belt 53 at a pitch of 80 mm or more. FIG. 5(a) shows a state in which the electrodes are attached at a pitch of 80 mm. The bar storage bucket 22 of FIG. 2(b) can be attached to the endless belt 53 at a pitch of 100 mm or more. FIG. 5(b) shows a state in which the electrodes are attached at a pitch of 100 mm. The bar storage bucket 23 of FIG. 2(c) can be attached to the endless belt 53 at a pitch of 120 mm or more. FIG. 5(c) shows a state in which they are attached at a pitch of 120 mm. The bar storage bucket 24 of FIG. 2(d) can be attached to the endless belt 53 at a pitch of 150 mm or more. FIG. 5(d) shows a state in which they are attached at a pitch of 150 mm. These dimensions are examples and are not limiting.

Each of the bar storage buckets 21 to 24 can accommodate a plurality of bars 3 so as to be parallel and adjacent to each other. An example of the state in which the bar 3 is waiting is shown in FIG. 6 as a schematic plan view corresponding to FIG. In the example of FIG. 6, 17 rows of bars 3 are visible and corresponds to the configuration of FIG. 5(b). In addition, the number of rods 3 in one row is six (depending on the diameter of the material), and each rod 3 is of a type having a large diameter portion and a small diameter portion (called raw material). that is).

As shown in FIG. 6, when one bar storage bucket is positioned at a bar delivery position P where the bar 3 can be delivered to the bar transfer device 4, the bar storage bucket transfers the bar to the bar storage bucket. 3 is delivered to the bar transfer device 4 . A suitable well-known position detection sensor 45 (see FIG. 1) may be used for positioning the bar storage bucket with respect to the bar delivery position P. As shown in FIG.

When the delivery of the bars 3 from the bar storage bucket to the bar transfer device 4 is completed (details will be described later), the drive motor 51 moves the endless belt 53 by one pitch of the bar storage bucket. As a result, the next bar storage bucket is positioned at the bar delivery position P where the bar 3 can be delivered to the bar transfer device 4, and the state shown in FIG. 6 is restored.

As shown in FIG. 7, the bar transfer device 4 of this embodiment includes an inclined shelf portion 41, a stopper wall 42 defining the lower end of the shelf portion 41 and retractable downward, and a An arm 43 arranged movably in an acute angle direction and a bar 3b attached to the tip of the arm 43 and next to the bar 3a abutting against the stopper wall 42 are pressed against the shelf 41 so as to hold the bar 3b. and a pressing member 44 configured as follows. The stopper wall 42 of this embodiment can be retracted by an air cylinder mechanism. Further, the arm 43 of this embodiment is movable by another air cylinder mechanism (the arm 43 is configured by a rod member of another air cylinder mechanism).

Further, as shown in FIG. 8, in the pressing member 44 of the present embodiment, the region for pressing the next bar 3b after the bar 3a in contact with the stopper wall 42 is parallel to the shelf 41. ing. The shelf 41 of this embodiment is adjusted to an angle of 20° with respect to the horizontal plane, and the moving direction of the arm 43 is further adjusted to an angle of 36.87° with respect to the shelf 41 . By adopting such an angle, a wider range of bar diameters can be accommodated. That is, even if the diameter of the bar to be supplied is changed, the pressing member 44 can accurately press the bar 3b next to the bar 3a that contacts the stopper wall 42 .

Here, according to the findings of the present inventor, the angle of the shelf 41 with respect to the horizontal plane is preferably 15 to 20°, and the angle of the arm 43 with respect to the shelf 41 is preferably 30 to 40°.

Further, in the bar transfer device 4 of the present embodiment, in order to more stably transfer the bar 3, a guide member whose spacing can be adjusted according to the length of the bar 3 to be supplied is provided. 46 are provided (see FIGS. 1 and 6).

7, the endless belt 53 of the bucket moving device 5 is provided at the same inclination angle as the shelf 41. As shown in FIG. Accordingly, the bar storage buckets 21 to 24 attached to the endless belt 53 are also inclined. Side walls (not shown) of the bar storage buckets 21 to 24 on the lower side support the stored bars 3 .

Next, the operation of the bar transfer device 4 of this embodiment will be described.

When one of the bar storage buckets 21 to 24 is positioned at the bar delivery position P, the lower side wall of the bar storage bucket 21 to 24 is automatically opened as shown in FIG. 7(a). Then, the plurality of bars 3 stored in the bar storage buckets 21 to 24 roll onto the shelf 41, and the lowest bar 3 is stopped by the stopper wall 42. As shown in FIG. At this time, the pressing member 44 is at a position retracted from the passage area of the bar 3 . (However, even in a state where the pressing member 44 is pressing a predetermined bar 3 (a state shown in FIGS. 7B to 7D to be described later), it is possible to supply a new bar 3 onto the shelf 41. is possible.)

Then, as shown in FIG. 7B, the arm 43 moves (extends), and the pressing member 44 presses the bar 3b next to the bar 3a in contact with the stopper wall 42 against the shelf 41. Hold.

In this state, the stopper wall 42 is retracted as shown in FIG. 7(c). As a result, the bar 3a in contact with the stopper wall 42 is rolled onto the guide member 11 and transferred.

Thereafter, as shown in FIG. 7(d), the stopper wall 42 projects back to its original position. Then, as shown in FIG. 7(e), the arm 43 moves (contracts) and the pressing member 44 releases the bar 3b so that the bar 3b rolls up to the stopper wall 42. As shown in FIG. After that, the operations after FIG. 7B are repeated in accordance with the timing of feeding the bar.

A sensor 47 for detecting the presence or absence of the bar 3 is provided on the shelf 41, and when the sensor 47 determines that there is no bar 3, the bucket moving device 5 is moved by one pitch, The next bar storage buckets 21 to 24 are positioned at the bar delivery position P. Although the sensor 47 is provided on the side of the bar 3 in the illustrated example, it may be provided on the lower surface side of the bar 3 or the like.

According to the bar feeder 1 of this embodiment, for example, if all the bar storage buckets 22 are loaded with the bars 3 as shown in FIG. can be supplied continuously. This enables unmanned supply operation for a long period of time, such as at night.

In order to reload the bars 3 into the bar storage buckets 21 to 24 that have been emptied, the bar feeder 1 must be stopped for safety reasons, and then, for example, the upper sidewalls of the bar storage buckets 21 to 24 can be reloaded. is released and manually performed by the operator.

As described above, according to the bar feeder 1 of the present embodiment, each of the plurality of bar storage buckets 21 to 24 can be sequentially moved to the bar delivery position P by the bucket moving device 5 . Therefore, the bar 3 can be continuously supplied over a long period of time.

Particularly, the bucket moving device 5 of this embodiment has an endless belt 53 that circulates, and the plurality of bar storage buckets 21 to 24 are fixed on the outer surface of the endless belt 53 and It is supported by the endless belt 53 both when it is located above the belt 53 and when it is located below it. As a result, the space on both upper and lower sides of the endless belt 53 can be utilized, and more bars 3 can be kept waiting.

In addition, the plurality of bar storage buckets 21 to 24 supported by the bucket moving device 5 of the present embodiment are arranged so that one wall facing the bar 3 in the length direction is adapted to the size of the bar 3 to be supplied. The positions of the opposing walls 21b to 24b and the positions of the top walls 21c to 24c can be changed. As a result, variations in the size of the bar 3 that can be accommodated in each of the bar storage buckets 21 to 24 are expanded.

In addition, the bar storage buckets 21 to 24 of this embodiment can be fitted with erroneous insertion prevention pieces 28 in accordance with the shape of the bar 3 to be supplied. As a result, even if it is necessary to pay attention to the direction of the bar 3 when storing (loading) the bar 3 into the bar storage buckets 21 to 24, the erroneous insertion prevention piece 28 can be used to store the bar. By attaching it to the bucket, it is possible to effectively regulate the loading direction of the bar 3 with a simple structure.

Further, in this embodiment, (all of) the plurality of bar storage buckets 21 to 24 supported by the bucket moving device 5 can be replaced according to the size of the bar 3 to be supplied. By preparing a plurality of types of replaceable bar storage buckets 21 to 24 in this way, the variation in size of the bar 3 that can be supplied is further expanded.

Further, the bucket moving device 5 of the present embodiment can support the plurality of bar storage buckets 21 to 24 at equal intervals, and the support intervals of the plurality of bar storage buckets 21 to 24 can be changed. It's becoming For example, if the support interval is narrowed, the number of bars 3 that can be kept on standby increases, so continuous supply for a longer period of time becomes possible. On the other hand, if a margin is provided in the support interval, it is easier to load the bar 3 into the bar storage buckets 21 to 24 after they are emptied. In this way, by being able to change the support interval in accordance with the operating conditions of the bar feeder 1, it is possible to flexibly adopt a mode that is convenient for the operator.

Further, since the bar transfer device 4 of the present embodiment is provided with guide members 46 whose spacing can be adjusted according to the length of the bar 3 to be supplied, the transfer operation of the bar 3 can be It can be implemented more stably.

Further, according to the bar transfer device 4 of the present embodiment, the bar 3b next to the bar 3a in contact with the stopper wall 42 is pressed and held against the shelf 41 by the pressing member 44. A downward retractable stopper wall 42 can be employed as the lower end of the portion 41 . As a result, the transfer work of the bar 3 can be carried out more stably, compared to the conventional structure in which the stopper wall at the lower end is climbed over.

In particular, the region of the pressing member 44 for pressing the bar 3b next to the bar 3a in contact with the stopper wall 42 is parallel to the shelf 41, so that the bar in contact with the stopper wall 42 The bar 3b next to 3a is pressed and held against the shelf 41 more stably. As a result, the work of transferring the bar 3 can be carried out more stably.

The stopper wall 42 that can be retracted downward may be replaced with a stopper wall 42b that can be retracted forward. FIGS. 9A and 9B show how the bar 3 moves (rolls) as the stopper wall 42b is retracted. In this case, as shown in FIGS. 9(a) and 9(b), it is possible to guide the rolling bar 3 at a low speed in accordance with the retracting movement speed of the stopper wall 42b.

In the above embodiment, each of the bar storage buckets 21 to 24 is not provided with a side wall, and a frame is provided so as to surround the orbit of the endless belt 53 of the bucket moving device 5. The bars 3 stored in the material storage buckets 21 to 24 may be supported. In this case, the portion of the frame corresponding to the bar delivery position P is provided with a door that opens and closes at an arbitrary timing. , the door is automatically opened.

According to such a configuration, it is not necessary to provide a side wall having an automatic opening/closing function on each of the bar storage buckets 21-24. However, since the lowest bar 3 slides with respect to the frame, it is necessary to provide a desired liner on the frame to prevent the bar 3 from being damaged. There is also

Next, FIG. 10 is a schematic plan view of a bar feeder 101 according to another embodiment of the invention. However, as in FIG. 1, the bar storage buckets 21 to 24 are shown removed.

In the bar feeder 101 of FIG. 10, in addition to the bar feeder 1 of FIG. , a shelf 141 (first bar transfer device) for supplying long bars is provided. Shelves 141 are similar to those conventionally known.

According to the bar feeder 101 of FIG. 10, a long bar and a short bar can be processed using the same bar processing machine. In addition, by effectively utilizing the space symmetrical to the shelf 141 for long bars, it is possible to continuously supply short bars for a long period of time.

In addition, in the bar feeder 101 of FIG. 10, when feeding a long bar, the feed arrow 12 as a feed member and its drive mechanism (called a slider mechanism) are temporarily separated. Specifically, when feeding a long bar, the feed arrow 12 and the drive mechanism are separated, and the feed arrow 12 is temporarily retracted to the side. In this state, a long bar is transferred onto the guide member and sent out only by the drive mechanism. After the rear end of the long bar is sent out to the vicinity of the bar transfer device 4, the tip of the drive mechanism is retracted, and the feed arrow 12, which was temporarily retracted, returns to its original trajectory. , and reconnected with the tip of the drive mechanism, after which the long bar is fed to the bar processing machine by the feed arrow 12.例文帳に追加

A typical dimension of the short bar 3 is about 30 to 180 mm in length and about 10 to 130 mm in diameter.

10, the bar transfer device 4 and the bucket moving device 5 may be provided instead of the shelf 141. As shown in FIG. That is, two sets of the bar transfer device 4 and the bucket moving device 5 may be provided with the guide member 11 interposed therebetween.

1 bar feeder 11 guide member 12 feed arrow (typical example of feed member)
21 to 24 Bar storage buckets 21a to 24a Body parts 21b to 24b Opposing walls (Positions can be changed according to the length of the bar)
21c to 24c top (position can be changed according to the diameter of the bar)
28 erroneous insertion prevention piece 3 bar 3a bar 3b in contact with stopper wall next bar 4 bar in contact with stopper wall bar transfer device 41 shelf 42 stopper wall 42b stopper wall 43 arm 44 pressing member 45 bucket detection sensor 46 guide member 47 bar detection sensor 5 bucket moving device 51 drive motor 52 pulley 53 endless belt (a typical example of endless members)
101 bar feeder 141 shelf for long bars

Claims (9)

A bar feeder for feeding bars to a bar processing machine,
a feed member that pushes the rear end of the bar toward the bar processing machine;
a guide member that guides the bar pushed by the feed member toward the bar processing machine;
a bar transfer device for transferring a bar onto the guide member;
a plurality of bar storage buckets each capable of accommodating a plurality of bars;
a bucket moving device that supports the plurality of bar storage buckets and sequentially moves each of the plurality of bar storage buckets to a bar delivery position where the bar can be delivered to the bar transfer device; ,
with
The bar transfer device is
an inclined shelf;
a stopper wall that defines the lower end of the shelf and is retractable downward or forward;
an arm arranged to be movable in an acute angle direction with respect to the shelf;
a pressing member attached to the distal end of the arm and configured to press and hold the bar next to the bar in contact with the stopper wall against the shelf;
and
A region of the pressing member for pressing the bar next to the bar in contact with the stopper wall is parallel to the ledge.
A bar feeder characterized by: The bucket moving device has an endless member that circulates,
The plurality of bar storage buckets are fixed on the outer surface of the endless member and are supported by the endless member both when positioned above and when positioned below the endless member. The bar feeder according to claim 1. In the plurality of bar storage buckets supported by the bucket moving device, the position of one of the walls opposed in the longitudinal direction of the bar and/or the top wall can be changed according to the size of the bar to be supplied. The bar feeder according to claim 1 or 2, characterized in that: 1. A piece for preventing mis-insertion can be attached to each of the plurality of bar storage buckets supported by the bucket moving device in accordance with the shape of the bar to be supplied. 4. The bar feeder according to any one of 3. 5. The bar storage buckets according to any one of claims 1 to 4, wherein the plurality of bar storage buckets supported by the bucket moving device are replaceable according to the size of the bar to be supplied. Bar feeder. The bucket moving device supports the plurality of bar storage buckets at regular intervals,
6. The bar feeder according to any one of claims 1 to 5, wherein the support intervals of the plurality of bar storage buckets are variable. 7. The bar feeder according to claim 1, wherein the bar transfer device is provided with a guide member whose spacing is adjustable according to the length of the bar to be fed. machine. A bar feeder for feeding bars to a bar processing machine,
a feed member that pushes the rear end of the bar toward the bar processing machine;
a guide member that guides the bar pushed by the feed member toward the bar processing machine;
a bar transfer device for transferring a bar onto the guide member;
with
The bar transfer device is
an inclined shelf;
a stopper wall that defines the lower end of the shelf and is retractable downward or forward;
an arm arranged to be movable in an acute angle direction with respect to the shelf;
a pressing member attached to the distal end of the arm and configured to press and hold the bar next to the bar in contact with the stopper wall against the shelf;
and
A region of the pressing member for pressing the bar next to the bar in contact with the stopper wall is parallel to the ledge.
A bar feeder characterized by: The angle of the shelf with respect to the horizontal plane is 15 to 20°,
9. The bar feeder according to claim 8 , wherein the angle of the moving direction of the arm with respect to the shelf is 30 to 40 degrees.

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