JP7519946B2 - Bar Feeder - Google Patents

Description

The present invention relates to a bar supplying device that separates individual bars from a group of bars that have been unbundled and arranged in parallel, and supplies them to a specified transfer position.

There is a known bar material supplying device that separates a group of parallel long bars, such as reinforcing bars or steel bars, one by one and supplies them to a specified transfer position. For example, there are bar material supplying devices described in Patent Document 1 and Patent Document 2.

In the bar material supplying device described in Patent Documents 1 and 2 above, a fixed plate on which a step-shaped feed step having multiple bar material receiving parts with equal steps that narrow from bottom to top is formed, and a movable plate on which a step-shaped feed step having multiple bar material receiving parts with equal steps that narrow from bottom to top is formed and is positioned shifted toward the bar material group from the fixed plate are repeatedly driven up and down relative to each other, so that the number of bars that can be received by the bar material receiving parts decreases the higher they go, and one bar material is separated.

JP 2004-168551 A JP 2014-159330 A

However, since the rods are, for example, about 10 mm to 51 mm in diameter and about 10 m long, they are prone to becoming entangled. When attempting to separate one of the entangled rods, the other rods entangled with it will pull the one rod down, making it impossible to separate just the one rod.

The present invention was made against the background of the above circumstances, and its purpose is to provide a bar supplying device that reliably separates long bars one by one from a group of parallel long bars and supplies them to a specified transfer position.

The gist of the first invention is (a) a bar material supplying device which separates one bar material from a plurality of bar materials arranged in parallel in a direction intersecting the longitudinal direction of the bar materials and supplies the bar material to a predetermined transfer position, (b) an inclined support member which is inclined so that the downstream side in a transfer direction intersecting the longitudinal direction of the bar material is lower and supports the plurality of bar materials that have been transferred, and (c) a bar material receiving portion of a predetermined width for scooping up the plurality of bar materials supported by the inclined support member and an arc-shaped portion passing through an outer end of the bar material receiving portion, the arc-shaped portion being (d) a stopper member which is fixed in a position to prevent the bar material received in the bar material receiving portion from moving toward the center line of curvature, and which is inclined so as to move away from the inclined support member as it becomes higher, so that the effective length of the bar material receiving portion which receives the bar material in the raised position of the lifter becomes shorter as the lifter is raised and only one bar material is placed on the stopper member; (e) an inclined table which is provided in a fixed position and becomes lower toward the transfer position, and which receives the bar material that has slipped off the bar material receiving portion when the lifter is positioned at the raised position and guides it toward the transfer position; and (f) a material return plate which has an inclined return portion at its upper end which is inclined opposite to the inclined table, and which is driven up and down so that the inclined return portion is at a position lower and higher than the upper end of the inclined table .

The gist of the second invention is: (a) a bar stock supplying device which separates one bar stock from a plurality of bar stocks arranged in parallel in a direction intersecting the longitudinal direction of the bar stock and supplies the bar stock to a predetermined transfer position, (b) an inclined support member which is inclined so that the downstream side in a transfer direction intersecting the longitudinal direction of the bar stock is lower and supports the plurality of bar stocks that have been transferred, and (c) a bar stock receiving portion of a predetermined width for scooping up the plurality of bar stocks supported by the inclined support member and an arc-shaped portion passing through an outer end of the bar stock receiving portion are formed, and the arc-shaped portion moves between a raised position and a lowered position around a center line of curvature of the arc-shaped portion while the arc-shaped portion is in sliding contact with the bar stock supported by the inclined support member. (d) a stopper member fixed in a position to prevent the bar received in the bar receiving portion from moving toward the center line of curvature, the stopper member being inclined so as to move away from the inclined support member as it becomes higher, so that the effective length of the bar receiving portion that receives the bar in the raised position of the lifter becomes shorter as the lifter is raised and only one bar can be placed thereon; and (e) the stopper member has a thickness corresponding to the diameter of the bar, is selected from a plurality of plate members that determine the effective length of the bar receiving portion in the raised position of the lifter, and is removably fixed.

The gist of the third invention is: (a) a bar stock supplying device which separates one bar stock from a plurality of bar stocks arranged in parallel in a direction intersecting the longitudinal direction of the bar stock and supplies the bar stock to a predetermined transfer position, (b) an inclined support member which is inclined so that the downstream side in a transfer direction intersecting the longitudinal direction of the bar stock is lower and supports the plurality of bar stocks that have been transferred, and (c) a bar stock receiving portion of a predetermined width for scooping up the plurality of bar stocks supported by the inclined support member and an arc-shaped portion passing through an outer end of the bar stock receiving portion are formed, and the arc-shaped portion moves between an elevated position and a lowered position around a center line of curvature of the arc-shaped portion while the arc-shaped portion is in sliding contact with the bar stock supported by the inclined support member. and (d) a stopper member fixed in a position to prevent the bar received in the bar receiving portion from moving toward the center line of curvature, the stopper member being inclined so as to move away from the inclined support member as it becomes higher, so that the effective length of the bar receiving portion that receives the bar in the raised position of the lifter becomes shorter as the lifter is raised and only one bar can be placed on the bar receiving portion, and (e) the stopper member is capable of rotating in multiple stages around its lower end portion, and is set to a rotation angle that determines the effective length of the bar receiving portion in the raised position of the lifter.

The gist of the fourth invention is: (a) a bar material supplying device which separates one bar material from a plurality of bar materials arranged in parallel in a direction intersecting the longitudinal direction of the bar material and supplies the bar material to a predetermined transfer position, (b) an inclined support member which is inclined so that the downstream side in a conveying direction intersecting the longitudinal direction of the bar material is lower and supports the plurality of conveyed bar materials, (c) a bar material receiving portion of a predetermined width for scooping up the plurality of bar materials supported by the inclined support member and an arc-shaped portion passing through an outer end of the bar material receiving portion are formed, the arc-shaped portion being in sliding contact with the bar material supported by the inclined support member and which is reciprocally rotated between an elevated position and a lowered position about a center line of curvature of the arc-shaped portion with the arc-shaped portion in sliding contact with the bar material supported by the inclined support member, and (d) a lifter which is configured to move the bar material received by the bar material receiving portion in a direction parallel to the center line of curvature, the lifter being ... a stopper member inclined so as to move away from the inclined support member as it becomes higher, so that the effective length of the bar receiving portion that receives the bar in the raised position of the lifter becomes shorter as the lifter is raised, and only one bar is placed on the stopper member; (e) a tilted platform that is provided in a fixed position and becomes lower toward the transfer position side, for receiving the bar that has slipped off the bar receiving portion when the lifter is positioned at the raised position and guiding it toward the transfer position side; (f) a first step portion formed with a first stopper portion that stops the bar that slides down the tilted platform and a first inclined receiving portion that receives the bar stopped by the first stopper portion after the first stopper portion moves up and down; (g) a bar control plate having a second step formed with a second stopper portion for stopping the bar sliding down on the first inclined receiving portion, a second inclined receiving portion for receiving the bar stopped by the second stopper portion after the second stopper portion moves up and down, and a horizontal receiving portion formed horizontally next to the second inclined receiving portion, the bar control plate being driven up and down so that the first inclined receiving portion is in a lower position lower than the inclined bed and in an upper position higher than the inclined bed; (h) a fixed inclined plate having a third step formed with a third stopper portion for stopping the bar sliding down on the inclined bed and a third inclined receiving portion for receiving the bar stopped by the third stopper portion after the first stopper portion moves up and down, and a fourth step including a fourth stopper portion for stopping the bar sliding down on the third inclined receiving portion, (i) when the bar control plate is positioned in the upper position, the third inclined receiving portion is lower than the first inclined receiving portion and the height of the fourth stopper portion is lower than the second inclined receiving portion, and when the bar control plate is positioned in the lower position, the third inclined receiving portion is higher than the first inclined receiving portion and the height of the fourth stopper portion is higher than the second inclined receiving portion.

The gist of the fifth invention is that in any one of the first to fourth inventions, it includes a horizontal bar conveying device which conveys a plurality of bar materials horizontally in a direction intersecting the longitudinal direction of the bar materials and sends them to the inclined support member.

The bar feeder of the first invention includes a stopper member that is fixed at a position that prevents the bar received in the bar receiving portion from moving toward the center line of curvature, and that is inclined so as to move away from the inclined support member as it becomes higher, so that the effective length of the bar receiving portion that receives the bar in the raised position of the lifter becomes shorter as the lifter rises and only one bar is placed on the bar receiving portion. As a result, the entanglement of the bars is undone by the impact of the bar that falls from the bar receiving portion of the lifter during the lifter's rise, and one bar is supported by the bar receiving portion at the raised position of the lifter, so that each bar separated from the group of bars that are parallel to each other is reliably supplied to the specified transfer position.
The bar feeder of the first invention further includes a fixed inclined platform which receives the bar that has slid down from the bar receiving portion when the lifter is at the raised position and guides it to the transfer position, and which becomes lower toward the transfer position. As a result, the bar that has slid down from the bar receiving portion of the lifter is received on the inclined platform and moved to the transfer position by the inclination of the inclined platform.
The bar feeder of the first invention further includes a material return plate, which has an inclined return section at its upper end, inclined in the opposite direction to the inclined table, and which is driven up and down so that the inclined return section is at a lower position and a higher position than the upper end of the inclined table. In this way, if a bar received on the inclined table cannot be moved to the transfer position by the inclination of the inclined table because it is entangled with another bar, the inclined return section will fall onto the inclined support member when the material return plate is raised due to the inclination of the inclined return section. The impact of this fall will eliminate the entanglement between the bars.

According to the bar material supplying device of the second invention, the stopper member has a thickness corresponding to the diameter of the bar material, is selected from a plurality of plate materials that determine the effective length of the bar material receiving portion of the lifter in the raised position, and is detachably fixed. When the stopper member having a thickness according to the diameter of the bar material is fixed, the effective length of the bar material receiving portion of the lifter in the raised position of the lifter corresponds to the diameter of the bar material, and only one bar material is placed on the lifter. This makes it possible to handle bar materials of various diameters.

According to the bar feeder of the third invention, the stopper member is provided so as to be rotatable in multiple stages around the lower end portion, and is set to a rotation angle that determines the effective length of the bar receiving portion of the lifter in the raised position. When the stopper member is set to a rotation angle according to the diameter of the bar and fixed, the effective length of the bar receiving portion of the lifter in the raised position of the lifter corresponds to the diameter of the bar, and only one bar is placed on the lifter. This makes it possible to handle bar materials of multiple diameters. Another advantage is that there is no need to replace parts for bar materials of different diameters.

According to the bar stock supplying device of the fourth invention, a first step portion is formed with a first stopper portion for stopping the bar stock sliding down on the inclined bed and a first inclined receiving portion for receiving the bar stock stopped by the first stopper portion after the first stopper portion moves up and down, a second step portion is formed with a second stopper portion for stopping the bar stock sliding down on the first inclined receiving portion and a second inclined receiving portion for receiving the bar stock stopped by the second stopper portion after the second stopper portion moves up and down, and a horizontal receiving portion formed horizontally next to the second inclined receiving portion, and the first inclined receiving portion is driven up and down so that the first inclined receiving portion is in a lower position lower than the inclined bed and in an upper position higher than the inclined bed; and a fixed inclined plate having a fixed position and a third step portion formed with a third stopper portion for stopping the bar material sliding down and a third inclined receiving portion for receiving the bar material stopped by the third stopper portion after the first stopper portion moves up and down, and a fourth step portion including a fourth stopper portion for stopping the bar material sliding down on the third inclined receiving portion, wherein when the bar control plate is positioned in the upper position, the third inclined receiving portion is lower than the first inclined receiving portion and the height of the fourth stopper portion is lower than the second inclined receiving portion, and when the bar control plate is positioned in the lower position, the third inclined receiving portion is higher than the first inclined receiving portion and the height of the fourth stopper portion is higher than the second inclined receiving portion. When the bar control plate is in the upper position, the bar is received by the first stopper, the second stopper and the horizontal receiver, and when the bar control plate is in the lower position, the bar is received by the third stopper and the fourth stopper, and the bar received by the horizontal receiver is lowered to the transfer position. Therefore, the bar sliding down the inclined platform is reliably lowered to the transfer position one by one.

The bar feeder of the fifth aspect of the present invention includes a horizontal bar feeder that horizontally feeds the plurality of bar materials in a direction intersecting the longitudinal direction of the bar materials and feeds them to the inclined support member. This makes it possible to store a large amount of bar materials by placing a plurality of unbundled bar materials R on the horizontal bar feeder and feed the bar materials.

1 is a front view showing a bar supplying device according to an embodiment of the present invention; FIG. 2 is a plan view showing the bar feeder of FIG. 1 . FIG. 2 is a side view showing the bar feeder of FIG. 1 . FIG. 2 is an enlarged front view of the bar feeder of FIG. 1 , excluding the bar transport device; 4 is a diagram for explaining the operation of a lifter of the bar feeder of FIG. 1, showing a state in which the lifter is in a lowered position; FIG. FIG. 2 is a diagram for explaining the operation of a lifter of the bar feeder of FIG. 1, showing a state in which the lifter is in a raised position. FIG. 5 is a detailed view of the material return plate shown in FIGS. 1 and 4 and the return plate up-down drive device that drives the material return plate up and down. 13A and 13B are diagrams illustrating a stopper member according to another embodiment of the present invention.

Below, an embodiment of the present invention will be described in detail with reference to the drawings. Note that in the following embodiment, the drawings have been appropriately simplified or modified, and the dimensional ratios and shapes of each part are not necessarily drawn accurately.

Figure 1 is a front view showing a bar material supplying device 10 according to an embodiment of the present invention. Figure 2 is a plan view of the bar material supplying device 10 excluding the bar material conveying device 12, and Figure 3 is a side view. In Figures 1, 2, and 3, the bar material supplying device 10 includes a first machine frame 14 that supports the bar material conveying device 12 that conveys the bar material R, and a second machine frame 32 that supports the tilt support member 16, the lifter 18, the stopper member 20, the tilt table 22, the material return plate 24, the bar material control plate 26, the fixed tilt plate 38, the transfer conveyor 30, and the like. The first machine frame 14 and the second machine frame 32 have a width dimension corresponding to the length of the bar material R. In addition, in the second machine frame 32, the tilt support member 16, the lifter 18, the stopper member 20, the tilt table 22, the material return plate 24, the bar material control plate 26, and the fixed tilt plate 38 are each arranged in a plurality at predetermined intervals in the longitudinal direction of the bar material R.

The bars R are steel bars for reinforced concrete (JIS G3112:2020), steel bars (JIS G0203:2009), round bars, deformed bars, etc., and are made of metals such as general steel such as carbon steel, alloy steel, stainless steel, aluminum alloy, copper alloy, etc., and are long bars with a diameter of 10 to 51 mm and a length of approximately 10 m. Multiple bars R are placed in parallel in a direction intersecting the longitudinal direction of the bars R on the bar conveying device 12 and conveyed.

As shown in FIG. 2, the transfer conveyor 30 is equipped with a plurality of horizontal rollers 30a supported rotatably around a horizontal rotation centerline at the side edge of the second machine frame 32, and a plurality of guide rollers 30b rotatably installed on the second machine frame 32 to guide the bar material R so that it does not deviate from the horizontal rollers 30a. The transfer conveyor 30 transports the bar material R in the longitudinal direction of the bar material R, i.e., in the vertical direction of the bar material R, to a bar material cutting device (not shown), and supplies one end of the bar material R to a bar material processing device such as a swing-type bar material cutting device or a slide-type bar material cutting device (not shown). The surface connecting the tops of the plurality of horizontal rollers 30a of the transfer conveyor 30 is the transfer position of the bar material R, i.e., the transfer surface F shown in FIG. 3.

As shown in FIG. 1, the bar material conveying device 12 is a horizontal bar material conveying device that includes multiple pairs of sprockets 12a with a rotation centerline in a horizontal plane, conveying chains 12b wound around each of the multiple pairs of sprockets 12a, a chain rail 12c that horizontally supports the upper side of the conveying chains 12b, and a reducer-equipped motor 12e that rotates and drives the driving sprocket 12a, which is located downstream of the pair of sprockets 12a in the conveying direction A1, via a drive chain 12d. The bar material conveying device 12 horizontally conveys multiple long bars R that are parallel to each other and have been separated, for example by removing the cable ties, in the conveying direction A1 (leftward in FIG. 1) that intersects with the longitudinal direction of the bars R.

The inclined support member 16 is mounted on the second machine frame 32 in an inclined state so that one end on the downstream side in the conveying direction A1 is lower, and receives multiple bars R conveyed by the bar conveying device 12 and retains the multiple bars R on one end on the downstream side.

Figure 4 is a front view of the bar material supplying device 10, and is an enlarged view showing the bar material conveying device 12 excluded. The lifter 18 is integrally formed with a bar material receiving portion 18a of a predetermined width for scooping up multiple bars R supported by the inclined support member 16, an arc-shaped portion 18b passing through the outer end of the bar material receiving portion 18a, and an arm portion 18c. The lifter 18 is periodically rotated back and forth between an elevated position and a lowered position shown in Figure 4 around the curvature center line C1 of the arc-shaped portion 18b with the arc-shaped portion 18b in sliding contact with the bar material R supported by the inclined support member 16. The base end of the arm portion 18c is fixed to a rotating shaft 18d supported by the second machine frame 32 so as to be rotatable around the curvature center line C1, and the rotating shaft 18d is connected to a drive arm 18f that is driven to reciprocate between the elevated position and the lowered position around the curvature center line C1 by a rotating drive cylinder 18e.

As shown in FIG. 5, when the lifter 18 is in the lowered position, the arm 18c of the lifter 18 is horizontal, but the bar receiving portion 18a is inclined so that it becomes lower toward the outer periphery. However, as shown in FIG. 6, when the lifter 18 is in the raised position, the bar receiving portion 18a is inclined so that it becomes higher toward the outer periphery, and the effective length EL of the bar receiving portion 18a is set so that one bar R is placed on it so that a bar R scooped up by the bar receiving portion 18a can be rolled over the upper end of the stopper member 20 toward the transfer conveyor 30. The effective length EL of the bar receiving portion 18a is the length of the portion of the bar receiving portion 18a that protrudes from the stopper member 20 toward the bar conveying device 12 when the lifter 18 is in the raised position.

The stopper member 20 is removably fixed to the second machine frame 32 by screws (not shown) in a state in which it is inclined away from the inclined support member 16 as it becomes higher so that it comes into sliding contact with the bar R scooped up by the bar receiving portion 18a and prevents the bar from falling toward the center line of curvature C1. The stopper member 20 also has a thickness T1 corresponding to the diameter of the bar R, in a state in which it is inclined away from the inclined support member 16 as it becomes higher, so that the effective length EL for receiving the bar R of the bar receiving portion 18a in the raised position of the lifter 18 becomes shorter as the lifter 18 rises, allowing only one bar R to be placed on it. In other words, multiple types of stopper members 20 with thicknesses T1 corresponding to the types of diameters of the bar R are available.

In the lowered position of the lifter 18 shown in FIG. 5, of the multiple bars R scooped up by the bar receiving portion 18a, when the lifter 18 reaches the raised position shown in FIG. 6, the remaining bars R, or all of the bars R, except for one bar R that is in sliding contact with the stopper member 20, are dropped from the bar receiving portion 18a onto the inclined support member 16. If the bars R are entangled with each other, the impact of this drop will effectively dissolve the entanglement. If all of the bars R are dropped from the bar receiving portion 18a, the one bar R that is in sliding contact with the stopper member 20 is also entangled with the other bars R.

The inclined platform 22 is fixedly mounted on the second machine frame 32 so that it is lower toward the transfer conveyor 30 (transfer position) in order to receive the bar R that has slid down from the bar receiving portion 18a to the transfer conveyor 30 side beyond the upper end of the stopper member 20 when the lifter 18 is positioned in the raised position and guide it to the transfer position, i.e., the transfer conveyor 30 side.

As shown in Figures 4 and 7, the material return plate 24 is formed at its upper end with an inclined return section 24a that is inclined in the opposite direction to the inclined table 22 at the upper end of the inclined table 22, and is driven up and down by a return plate up and down drive device 25 fixed to the second machine frame 32 so that the inclined return section 24a is positioned lower and higher than the upper end of the inclined table 22. The material return plate 24 shown by the solid line in Figure 4 indicates the high position, and the material return plate 24 shown by the dashed line in Figure 4 indicates the low position.

The return plate vertical drive device 25 includes an upper and lower member 25a fixed to the lower end of the material return plate 24, a pair of upper and lower rods 25c whose upper ends are connected to the upper and lower members 25a and guided in the vertical direction by a pair of upper and lower bushes 25b, and an upper and lower cylinder 25d that drives the upper and lower members 25a in the vertical direction. The return plate vertical drive device 25 drives the material return plate 24 upward when the lifter 18 is about to move to the lowered position, and downward when the lifter 18 is about to move to the raised position. As a result, when one bar R remains at the upper end of the inclined platform 22 even when the lifter 18 is about to move to the lowered position, the material return plate 24 drops the one bar R onto the inclined support member 16 to eliminate the tangle.

As shown in detail in Figures 2 and 3, the second machine frame 32 is provided with a plurality of bar control plates 26 arranged in a direction parallel to the longitudinal direction of the transfer conveyor 30, which are rotatable about horizontal rotation centerlines parallel to each other. Each bar control plate 26 is provided with a fixed arm 26a, and the ends of the fixed arms 26a are connected to each other by a connecting member 26b. The connecting member 26b is driven to reciprocate in the longitudinal direction by a bar control plate drive device 36 including a cylinder 34, and the plurality of bar control plates 26 connected to the connecting member 26b via the fixed arm 26a are driven to rotate in synchronization with each other between an upper position where the upper end edges are raised and a lower position where the upper end edges are lowered.

As shown in FIG. 4, the bar control plate 26 has a first step 27, a second step 28, and a horizontal receiving portion 29 formed horizontally following the second inclined receiving portion 28b of the second step 28. The first step 27 is formed with a first stopper portion 27a that stops the bar R sliding down the inclined platform 22, and a first inclined receiving portion 27b that receives the bar R stopped by the first stopper portion 27a after the vertical movement of the bar control plate 26, i.e., the vertical movement of the first stopper portion 27a. The second step 28 is formed with a second stopper portion 28a that stops the bar R sliding down the first inclined receiving portion 27b, and a second inclined receiving portion 28b that receives the bar R stopped by the second stopper portion 28a after the vertical movement of the bar control plate 26, i.e., the vertical movement of the second stopper portion 28a. The horizontal support 29 is configured to be located below the transfer surface F of the transfer conveyor 30 when the bar control plate 26 is in the lower position.

The bar control plate 26 is driven by the bar control plate drive device 36 to rotate back and forth between a lower position where the first inclined receiving portion 27b of the first stage 27 is lower than the inclined table 22 and an upper position where the first inclined receiving portion 27b is higher than the third inclined receiving portion 40b, for example, every time the bar R is no longer on the transfer surface F of the transfer conveyor 30. In Figures 2 and 3, the lower position of the bar control plate 26 is shown by a solid line, and in Figure 3, the upper position of the bar control plate 26 is shown by a dashed line. In Figures 1 and 4, the bar control plate 26 is shown in the upper position.

The fixed inclined plate 38 shown in FIG. 4 is fixed to the second machine frame 32. The fixed inclined plate 38 has a third step 40 and a fourth step 42. The third step 40 is formed with a third stopper portion 40a that stops the bar R sliding down the inclined platform 22, and a third inclined receiving portion 40b that receives the bar R stopped by the third stopper portion 40a after the first stopper portion 27a moves up and down. The fourth step 42 is formed with a fourth stopper portion 42a that has a height lower than the second inclined receiving portion 28b when the bar control plate 26 is in the upper position, and stops the bar R sliding down the third inclined receiving portion 40b.

As described below, the bar control plate 26, in conjunction with the fixed inclined plate 38, moves up and down to supply the bars R one by one onto the transfer conveyor 30. First, the bar R scooped up onto the inclined platform 22 by the lifter 18 is made to roll or slide on the inclined platform 22 and is stopped by the first stopper portion 27a of the bar control plate 26. When the bar control plate 26 is moved to the lower position in this state, the bar R further rolls or slides and is stopped by the third stopper portion 40a of the fixed inclined plate 38.

Next, when the bar control plate 26 is brought to the upper position, the bar R that was stopped by the third stopper portion 40a is lifted by the first inclined receiving portion 27b of the bar control plate 26 as the bar control plate 26 is brought to the upper position, and is then caused to roll or slide due to the inclination of the first inclined receiving portion 27b, and is stopped by the second stopper portion 28a.

When the next up-down movement of the bar control plate 26 is started and the bar control plate 26 is in the lower position, the bar R on the first inclined receiving portion 27b stopped by the second stopper portion 28a is received by the third inclined receiving portion 40b of the fixed inclined plate 38 as it descends together with the first inclined receiving portion 27b, and is caused to roll or slide due to the inclination of the third inclined receiving portion 40b, and is stopped by the fourth stopper portion 42a.

When the bar control plate 26 is in the upper position, the bar R on the third inclined receiving portion 40b stopped by the fourth stopper portion 42a is lifted by the second inclined receiving portion 28b of the bar control plate 26, and is rolled or slid up to the horizontal receiving portion 29 due to the inclination of the second inclined receiving portion 28b, which is higher than the fourth stopper portion 42a, and is received by the horizontal receiving portion 29.

When the bar control plate 26 is next moved up and down, the bar control plate 26 is placed in the lower position, and the bar R on the horizontal support 29 is placed on the transfer surface F of the transfer conveyor 30. The bar control plate 26 is held in the lower position until the transfer of the bar R by the transfer conveyor 30 is completed.

As described above, according to the bar material supply device 10 of this embodiment, the multiple bar materials R transported by the bar material transport device 12 are supported by the inclined support member 16, and the multiple bar materials R supported by the inclined support member 16 are scooped up by the bar material receiving portion 18a of the lifter 18. The bar material receiving portion 18a of the lifter 18 has an effective length EL for receiving the bar material R at the lifted position of the lifter 18, which is shortened by the lifter 18 as the lifter 18 rises, and is a dimension that allows only one bar material R to be placed on it. In other words, the stopper member 20 is fixed at a position that prevents the bar material R received by the bar material receiving portion 18a from moving toward the curvature center line C1, and includes a stopper member 20 that is inclined so as to move away from the inclined support member 16 as it becomes higher, so that the effective length EL for receiving the bar material R at the lifted position of the lifter 18 of the bar material receiving portion 18a becomes shorter as the lifter 18 rises and only one bar material R is placed on it. As a result, the impact of the bar R dropping from the bar receiving portion 18a of the lifter 18 while the lifter 18 is rising causes the bar R to become entangled, and one bar R is supported by the bar receiving portion 18a when the lifter 18 is in the raised position, so that each bar R separated from the group of bar R that are parallel to each other is reliably supplied to the specified transfer position.

In addition, according to the bar material supply device 10 of this embodiment, a tilted platform 22 that becomes lower toward the transfer position is provided in a fixed position and receives the bar material R that slides off the bar material receiving portion 18a when the lifter 18 is positioned in its raised position and guides it toward the transfer position. As a result, the bar material that slides off the bar material receiving portion 18a of the lifter 18 is received on the tilted platform 22 and moved toward the transfer position by the tilt of the tilted platform 22.

In addition, according to the bar material supplying device 10 of this embodiment, a material return plate 24 is provided, which has an inclined return section 24a at its upper end, which is inclined in the opposite direction to the inclined table 22, and is driven up and down so that the inclined return section 24a is at a lower position and a higher position than the upper end of the inclined table 22. As a result, if a bar material R received on the inclined table 22 cannot be moved to the transfer position side by the inclination of the inclined table 22 due to entanglement with other bar materials R, when the material return plate 24 is raised, the inclination of the inclined return section 24a acts in the opposite direction and the bar material R received on the inclined table 22 is dropped onto the inclined support member 16. The impact of this drop eliminates the mutual entanglement of the bar materials R.

In addition, according to the bar material supplying device 10 of this embodiment, the stopper member 20 has a thickness T1 corresponding to the diameter of the bar material R, is selected from multiple types of plate material that determine the effective length EL of the bar material receiving portion 18a when the lifter 18 is in the raised position, and is removably fixed. When the stopper member 20 having a thickness T1 according to the diameter of the bar material R is fixed, the effective length EL of the bar material receiving portion 18a of the lifter 18 when the lifter is in the raised position corresponds to the diameter of the bar material R, and only one bar material R can be placed on it. This makes it possible to accommodate bar material R of multiple diameters.

In addition, according to the bar material supplying device 10 of this embodiment, (a) a first step 27 formed with a first stopper portion 27a that stops the bar material R sliding down on the tilt table 22 and a first tilted receiving portion 27b that receives the bar material R stopped by the first stopper portion 27a after the first stopper portion 27a moves up and down, a second step 28 formed with a second stopper portion 28a that stops the bar material R sliding down on the first tilted receiving portion 27b and a second tilted receiving portion 28b that receives the bar material R stopped by the second stopper portion 28a after the second stopper portion 28a moves up and down, and a horizontal receiving portion 29 formed horizontally following the second tilted receiving portion 28b, and a bar material control plate 26 that is driven up and down so that the first tilted receiving portion 27b of the first step 27 is at a position lower and higher than the tilt table 22, and (b) a bar material control plate 26 that moves up and down on the tilt table 22. The fixed inclined plate 38 is formed with a third step 40 in which a third stopper portion 40a that stops the bar R from sliding down and a third inclined receiving portion 40b that receives the bar R stopped by the third stopper portion 40a after the first stopper portion 27a moves up and down, and a fourth step 42 in which a fourth stopper portion 42a that stops the bar R from sliding down on the third inclined receiving portion 40b is formed. (c) When the bar control plate 26 is in the upper position, the third inclined receiving portion 40b of the fixed inclined plate 38 is lower than the first inclined receiving portion 27b, and the height of the fourth stopper portion 42a is lower than the second inclined receiving portion 28b, and when the bar control plate 26 is in the lower position, the third inclined receiving portion 40b is higher than the first inclined receiving portion 27b, and the height of the fourth stopper portion 42a is higher than the second inclined receiving portion 28b.

As a result, when the bar control plate 26 is in the upper position, the first stopper portion 27a stops the bar R sliding down the inclined platform 22, and the bar R stopped by the first stopper portion 27a in the previous cycle is stopped by the second stopper portion 28a, and the bar R stopped by the second stopper portion 28a in the previous cycle is moved onto the horizontal receiving portion 29. In this state, the bar R is on the first stopper portion 27a, the second stopper portion 28a, and the horizontal receiving portion 29. Next, when the bar control plate 26 is driven from the upper position to the lower position, the bar R stopped by the first stopper portion 27a is stopped by the third stopper portion 40a, the bar R stopped by the second stopper portion 28a is stopped by the fourth stopper portion 42a, and the bar R received by the horizontal receiving portion 29 is lowered to the transfer position (transfer surface F) on the horizontal roller 30a of the transfer conveyor 30. Next, when the bar control plate 26 is driven from the lower position to the upper position, the bar R that was stopped by the third stopper portion 40a and the fourth stopper portion 42a is received by the second stopper portion 28a and the horizontal receiving portion 29, respectively. This vertical movement of the bar control plate 26 ensures that the bar R sliding down the inclined platform 22 is lowered to the transfer position one by one.

The bar material supplying device 10 of this embodiment also includes a bar material conveying device 12 that conveys multiple bars R horizontally in a direction intersecting the longitudinal direction of the bars R and sends them to the inclined support member 16. This allows multiple unbound bars R to be placed on the device, allowing a large amount of bar material R to be stored, while the bar material R can be sent out as needed.

Figure 8 shows an example in which one type of stopper member 44 is used instead of multiple types of stopper members 20 with different thicknesses T1. The stopper member 44 is rotatably mounted on the second machine frame 32 around a rotation axis 46 whose position is fixed at the lower end of the stopper member 44. An angle adjustment member 50 having multiple engagement recesses 48 formed therein is fixed to the second machine frame 32. An angle adjustment link 52 is provided having a base end rotatably mounted on the stopper member 44 and a tip end that can be selectively engaged with one of the multiple engagement recesses 48 of the angle adjustment member 50. For example, when the tip end of the angle adjustment link 52 is engaged with the engagement recess 48 on the stopper member 44 side among the multiple engagement recesses 48, the rotation position of the stopper member 44 is changed from the position shown by the solid line to the position shown by the two-dot chain line, and the effective length EL of the bar receiving portion 18a of the lifter 18 is reduced.

According to this embodiment, the stopper member 44 is provided so as to be capable of multiple stages of rotation around the lower end, and is set to one of the rotation angles θs that determines the effective length EL of the bar receiving portion 18a when the lifter 18 is in the raised position. As a result, the effective length EL of the bar receiving portion 18a of the lifter 18 when the lifter 18 is in the raised position corresponds to the diameter of the bar R, so that it can be used for bar R of multiple different diameters. Another advantage is that there is no need to spend time replacing the stopper member for bar R of different diameters.

One embodiment of the present invention has been described above in detail with reference to the drawings, but the present invention is not limited to this embodiment and may be implemented in other forms.

For example, in the above embodiment, a bar control plate 26 and a bar control plate drive device 36 that drives it were provided, but these do not necessarily have to be provided.

In addition, in the above-mentioned embodiment, a horizontal bar material conveying device 12 was provided to convey multiple bars R using a conveying chain 12b, but instead, an inclined bar material support device may be provided on the extension line of the inclined support member 16.

In addition, in the above-mentioned embodiment, a material return plate 24 was provided to drop the bar R from the inclined table 22, but this does not necessarily have to be provided if the bar R is not entangled much.

The above is merely one embodiment, and other examples will not be given, but the present invention can be implemented in various forms with various modifications and improvements based on the knowledge of those skilled in the art without departing from the spirit of the invention.

10: Bar material supply device 12: Bar material conveying device (horizontal bar material conveying device)
16: Inclined support member 18: Lifter 18a: Bar stock receiving portion 18b: Arc-shaped portion 20: Stopper member 22: Inclined platform 24: Material return plate 24a: Inclined return portion 26: Bar stock control plate 27: First step portion 27a: First stopper portion 27b: First inclined receiving portion 28: Second step portion 28a: Second stopper portion 28b: Second inclined receiving portion 29: Horizontal receiving portion 38: Fixed inclined plate 40: Third step portion 40a: Third stopper portion 40b: Third inclined receiving portion 42: Fourth step portion 42a: Fourth stopper portion 44: Stopper member A1: Transport direction C1: Center line of curvature R: Bar stock

Claims (5)

A bar material supplying device that separates one bar material from a plurality of bar materials arranged in parallel in a direction intersecting a longitudinal direction of the bar materials and supplies the bar material to a predetermined transfer position,
an inclined support member that is inclined so that a downstream side of a conveying direction intersecting with a longitudinal direction of the bar material is lower, and supports the plurality of conveyed bar materials;
a lifter that is formed with a bar receiving portion of a predetermined width for scooping up the plurality of bar materials supported by the inclined support member and an arc-shaped portion that passes through an outer end of the bar receiving portion, the lifter being rotated back and forth between a raised position and a lowered position about a center line of curvature of the arc-shaped portion with the arc-shaped portion in sliding contact with the bar materials supported by the inclined support member;
a stopper member fixed at a position for preventing the bar received in the bar receiving portion from moving toward the center line of curvature, the stopper member being inclined so as to move away from the inclined support member as it becomes higher, so that the effective length of the bar receiving portion for receiving the bar in the raised position of the lifter becomes shorter as the lifter rises, and only one bar is placed on the bar receiving portion;
a tilted base that is fixed in position and receives the bar material that has slid down from the bar material receiving portion when the lifter is positioned at the raised position and guides the bar material to the transfer position; and a tilted base that becomes lower toward the transfer position.
a material return plate having an upper end formed with an inclined return section inclined opposite to the inclined table, the material return plate being vertically driven so that the inclined return section is at a lower position and a higher position than the upper end of the inclined table . A bar material supplying device that separates one bar material from a plurality of bar materials arranged in parallel in a direction intersecting a longitudinal direction of the bar material and supplies the bar material to a predetermined transfer position,
an inclined support member that is inclined so that a downstream side of a conveying direction intersecting with a longitudinal direction of the bar material is lower, and supports the plurality of conveyed bar materials;
a lifter that is formed with a bar receiving portion of a predetermined width for scooping up the plurality of bar materials supported by the inclined support member and an arc-shaped portion that passes through an outer end of the bar receiving portion, the lifter being rotated back and forth between a raised position and a lowered position about a center line of curvature of the arc-shaped portion with the arc-shaped portion in sliding contact with the bar materials supported by the inclined support member;
a stopper member fixed at a position that prevents the bar received in the bar receiving portion from moving toward the center line of curvature, and inclined so as to move away from the inclined support member as it becomes higher, so that an effective length of the bar receiving portion that receives the bar in the raised position of the lifter becomes shorter as the lifter rises and only one bar is placed thereon;
the stopper member has a thickness corresponding to the diameter of the bar, is selected from a plurality of plate materials that determine the effective length of the bar receiving portion when the lifter is in the raised position, and is removably fixed. A bar material supplying device that separates one bar material from a plurality of bar materials arranged in parallel in a direction intersecting a longitudinal direction of the bar materials and supplies the bar material to a predetermined transfer position,
an inclined support member that is inclined so that a downstream side of a conveying direction intersecting with a longitudinal direction of the bar material is lower, and supports the plurality of conveyed bar materials;
a lifter that is formed with a bar receiving portion of a predetermined width for scooping up the plurality of bar materials supported by the inclined support member and an arc-shaped portion that passes through an outer end of the bar receiving portion, the lifter being rotated back and forth between a raised position and a lowered position about a center line of curvature of the arc-shaped portion with the arc-shaped portion in sliding contact with the bar materials supported by the inclined support member;
a stopper member fixed at a position that prevents the bar received in the bar receiving portion from moving toward the center line of curvature, and inclined so as to move away from the inclined support member as it becomes higher, so that an effective length of the bar receiving portion that receives the bar in the raised position of the lifter becomes shorter as the lifter rises and only one bar is placed thereon;
a stopper member that is rotatable in multiple stages around its lower end and is set to a rotation angle that determines the effective length of the bar receiving portion when the lifter is in the raised position. A bar material supplying device that separates one bar material from a plurality of bar materials arranged in parallel in a direction intersecting a longitudinal direction of the bar material and supplies the bar material to a predetermined transfer position,
an inclined support member that is inclined so that a downstream side of a conveying direction intersecting with a longitudinal direction of the bar material is lower, and supports the plurality of conveyed bar materials;
a lifter that is formed with a bar receiving portion of a predetermined width for scooping up the plurality of bar materials supported by the inclined support member and an arc-shaped portion that passes through an outer end of the bar receiving portion, the lifter being rotated back and forth between a raised position and a lowered position about a center line of curvature of the arc-shaped portion with the arc-shaped portion in sliding contact with the bar materials supported by the inclined support member;
a stopper member fixed at a position for preventing the bar received in the bar receiving portion from moving toward the center line of curvature, the stopper member being inclined so as to move away from the inclined support member as it becomes higher, so that the effective length of the bar receiving portion for receiving the bar in the raised position of the lifter becomes shorter as the lifter rises, and only one bar is placed on the bar receiving portion;
a tilted base that is fixed in position and receives the bar that has slid down from the bar receiving portion when the lifter is positioned at the raised position and guides the bar to the transfer position; and the tilted base becomes lower toward the transfer position.
a first step portion formed with a first stopper portion for stopping the bar material sliding down on the inclined bed and a first inclined receiving portion for receiving the bar material stopped by the first stopper portion after the first stopper portion moves up and down; a second step portion formed with a second stopper portion for stopping the bar material sliding down on the first inclined receiving portion and a second inclined receiving portion for receiving the bar material stopped by the second stopper portion after the second stopper portion moves up and down; and a horizontal receiving portion formed horizontally next to the second inclined receiving portion, and the bar material control plate is vertically driven so that the first inclined receiving portion is at a lower position lower than the inclined bed and at an upper position higher than the inclined bed;
a fixed inclined plate having a fixed position, the third step being formed with a third stopper portion for stopping the bar material sliding down on the inclined platform and a third inclined receiving portion for receiving the bar material stopped by the third stopper portion after the first stopper portion moves up and down, and a fourth step being formed with a fourth stopper portion for stopping the bar material sliding down on the third inclined receiving portion,
a bar stock supplying device characterized in that, when the bar stock control plate is positioned at the upper position, the third inclination receiving portion is lower than the first inclination receiving portion, and the height of the fourth stopper portion is lower than the second inclination receiving portion, and, when the bar stock control plate is positioned at the lower position, the third inclination receiving portion is higher than the first inclination receiving portion, and the height of the fourth stopper portion is higher than the second inclination receiving portion. 5. The bar supplying device according to claim 1, further comprising a horizontal bar conveying device that conveys the plurality of bar materials horizontally in a direction intersecting a longitudinal direction of the bar materials and feeds the bar materials to the inclined support member.

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