JPH078691B2 - Parallel loading method for long workpieces - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention is used on an inclined loading rail when a plurality of long circular work pieces such as steel rods and steel pipes are bundled and cut in a parallel state. The present invention relates to a parallel loading method used for positioning and transferring a plurality of works waiting in parallel to a work transfer section which communicates with a cutting device or the like.

(Prior art and its problems) When cutting a long circular work such as a steel rod or a steel pipe with a cutting device such as a band saw, the work is placed in front of the cutting device in the axial direction on multiple horizontal rollers. A work transfer unit that movably supports is provided, and in this transfer unit, the work is positioned by adjusting the width by a positioning roller or the like so as to match the reference position of the cutting unit. Therefore, in order to automatically carry in the work to the transfer section, the work is made to stand in a parallel state by the stopper on the inclined carrying-in rail so that the work can be rolled, and the waiting work is carried out by an appropriate means. A loading method is used in which the transfer unit is transferred onto a support roller and positioned.

However, conventionally, in most cases, only one work can be transferred at one time, and a large number of works such as three or four or more works can be transferred and transferred on the transfer unit without interfering with each other. No automatic loading means has been found that can reliably position in parallel.

In view of such circumstances, the present invention allows a plurality of works to be transferred from an inclined carrying-in rail to a work transfer unit without disturbing them in a parallel state and to be naturally positioned on the transfer unit, and the number of transferred works Another object of the present invention is to provide a parallel loading method capable of coping with changes in the work diameter.

(Means for Solving the Problem) As a means for achieving the above-mentioned object, the present invention provides a plurality of long circular work pieces having a circular outer periphery which are rotatably waiting in a parallel state between a plurality of inclined loading rails. In the parallel loading method of transferring onto a horizontal roller of a work transfer unit in a parallel state, the first work to be transferred by waiting with a standby stopper whose position can be adjusted in the length direction of the rail is transferred. After receiving at a position according to the parallel width, lift up and down the required number of works by moving up and down the work transfer tool that has an inclined support surface and lift the top of the lifted work in the width direction of the transfer part. It is received by a guide member that can move back and forth, and by retracting the guide member, a plurality of lifted works are arranged in parallel along the inclined support surface above the transfer unit. Roll to
Next, by lowering the work transfer tool, the plurality of works are lowered in the parallel state while being sandwiched between the guide member at the retreat limit and the positioning member arranged opposite to the guide member. The present invention proposes a parallel loading method for a long work, which is characterized by being placed on a roller.

(Operation) With respect to a large number of circular outer peripheral long workpieces carried on the inclined carrying-in rail, the leading workpieces are received by the standby stoppers and are made to stand by in a parallel state. At this time, the position of the standby stopper is set such that the end work of the inclined support surface of the work transfer tool is the last work of the number to be transferred at one time of the work waiting and the next work. Adjust so that it is located between them. Further, the retracted position of the guide member or the position of the positioning member is adjusted so that the distance along the width direction of the transfer portion between the guide member and the positioning member at the retracted limit is substantially equal to the parallel width of the workpieces to be transferred. Before the transfer, the work transfer tool is kept in the lower limit position and the guide member is kept in the advanced position.

In such a state, by moving the work transfer tool upward, only the required number of works from the top of the rail are lifted in a parallel state to a position higher than the standby stopper. Then, the plurality of lifted workpieces try to roll in the downward direction by their own weight on the inclined support surface of the workpiece transfer tool, but at the initial stage of this rolling, the leading workpiece is guided by the guide member. Are received, and are guided to the transfer unit in the parallel state by driving the guide member backward. Then, since the retreat limit of the guide member is the position where the work is sandwiched between the guide member and the positioning member, the plurality of works stopped at the retreat limit move the work transfer tool downward. As a result, the space between the guide member and the positioning member is lowered in a parallel state, and the guide member and the positioning member are aligned and transferred from the inclined support surface to the horizontal roller of the work transfer unit.

(Example) An example in which the method of the present invention is carried out by using the apparatus shown in the accompanying drawings will be described below.

First, the device configuration will be described.
In the figure, reference numeral 1 denotes a work transfer section that forms a loading path to the cutting device A, and a horizontal roller 2 and a work transfer tool 3 are arranged at appropriate intervals in the length direction. Reference numeral 4 denotes an inclined loading rail arranged in parallel on one side of the work transfer section 1 at an appropriate interval, which is perpendicular to the transfer section 1 and outward 5
It is extended obliquely upward at a gentle angle of about 0 °, and a fixed roller 5 as a positioning member and a standby stopper 6 are provided on the lower end side thereof, that is, the transfer unit 1 side. Reference numeral 7 denotes a guide roller as a guide member that makes a pair with each fixed roller 5, and a rotating arm 8 having a position near the inclined loading rail installation side (hereinafter referred to as a reference side) of the transfer unit 1 as a pivot point. Attached to the free end of the transfer unit 1 in the maximum retracted position shown in FIG.
On the opposite side), the fixed roller 5 and the transfer section 1 face each other in the width direction. Reference numeral 9 is a hydraulic cylinder for driving the work transfer device 3, 10 is an interlocking rod for the work transfer device 3 that is pushed and pulled by the hydraulic cylinder 9, 11 is an interlocking rod for the guide roller 7, and 12 is a guide roller. Reference numeral 7 is a retracted position adjusting means, 13 is an underframe of the transfer section 1, 14 is a guard plate arranged on the opposite side of the transfer section 1, and 15 is a control panel.

As shown in FIGS. 3 to 5, each horizontal roller 2 is integrally formed with long and short shaft portions 2a and 2b on both sides in the axial direction, and bearings 16a and 16b that pivotally support the shaft portions 2a and 2b, respectively. On the mounting plate 17 installed between the side wall portions 13a and 13b on both sides of the underframe 13 with the axis extending in the width direction of the transfer portion 1 and the long shaft portion 2a.
Are mounted so that they are located on the reference side. Then, the work transfer device 3 is pivotally attached to the long shaft portion 2a of the horizontal roller 2 so as to be capable of undulating and swinging.

Referring also to FIG. 6, each work transfer tool 3 includes a rotary base frame 18 integrated by welding with cylindrical portions 18a and 18b fitted onto the long shaft portion 2a of the horizontal roller 2, and a free end thereof. And a work supporting plate 19 having a substantially L-shaped flat plate bolted to the upper end surface of the work supporting plate 19 forms a linear inclined support surface 19a with the reference side of the transfer path 1 as a high position. To do. Thus, the rotation base frame 18 of each work transfer tool 3 is provided with the operating lever 20 having the reinforcing ribs continuously from the tubular portion 18a positioned outside the underframe 13 and the operating levers 20 are connected to each other. It is pivotally attached to the interlocking rod 10 via a pin 20a. Therefore, by pushing and pulling the interlocking rod 10 with the hydraulic cylinder 9, all the work transfer tools 3 are synchronously driven up and down. The work transfer device 3 is set to be lower than the horizontal roller 2 in a range in which the inclined support surface 19a of the work support plate 19 faces the horizontal roller 2 in the lying position.

As shown in FIG. 7, the inclined carrying-in rail 4 is made of a cylindrical material having a square cross section, and a side wall portion on the reference side of the underframe 13 via a vertical mounting plate 21 welded and fixed to an opening end of the inclined lower side. 13a
It is bolted to the top. Reference numeral 4a is a square short tube-shaped reinforcing member welded to the lower corner of the joint between the rail 4 and the vertical mounting plate 21. A support block 22 is fixedly provided on the inner surface side of the vertical mounting plate 21, and the fixed roller 5 is rotatably mounted on the support block 22 via a vertical support shaft 5a.

Referring also to FIG. 8 and FIG. 9, each standby stopper 6 is a rectangular base plate 23 having a long hole 23a along the longitudinal direction of the rail 4, and a base block fixed onto the base plate 23. 2
4, a guide block 25 bolted to the side surface of the base block 24 to form a rectangular guide hole 25a with the base block 24, a support piece 26a integrally projecting on the back side slides in the guide hole 25a A buffer plate 26, which is freely inserted and fitted to the front side of both blocks 24, 25, is provided. Then, in the base block 24, two upper and lower parts are opened to the front side.
While having individual bottomed holes 24a, 24a, a spring receiving member 26b that can be fitted into the opening edge of each bottomed hole 24a is fixed to the back surface of the buffer plate 26, and loaded into each bottomed hole 24a. The buffer plate 26 is constantly elastically biased forward by the coil spring 27, and is prevented from coming off via a retaining bolt 28 attached to the base block 24.

Reference numeral 29 denotes a rectangular plate-shaped stopper installation base, which is welded and fixed to the side surface of the rail 4 and the vertical mounting plate 21 so as to incline in the same direction as the rail 4, and is placed on this standby. The stopper 6 is fixed by screwing a fixing bolt 30 into the screw hole 29a of the installation table 29 from above through the long hole 23a of the stopper 6 for use. Therefore, the stand-by stopper 6 is loosened in the range of the elongated hole 23a by loosening the fixing bolt 30, and the fixing bolt 3
By changing the screwing position of 0, the position can be adjusted in the longitudinal direction of the rail 4 in a wider range. In addition, here, the interlocking corrugated waveforms of the uneven lines in the direction orthogonal to the length direction of the rail 4 are formed on the bottom surface of the base plate 23 of the stopper 6 and the upper surface of the installation base 29, and the fixing bolt By using two 30s, the fixing strength of the stopper 6 is enhanced.

The rotating arm 8 of the guide roller 7 is composed of a box-frame-shaped main frame 31 and a strip-shaped actuating rod 32, one end of which is fixed to the lower surface of the intermediate portion thereof, in a T-shape in plan view. In the L-shaped mounting portion 31a, which is continuously provided on the base end side of the
While being rotatably attached to the attachment plate 17 via the bearing metal fitting 31c and a connecting pin on the tip side of the operating rod 32.
It is pivotally attached to the interlocking rod 11 via 32a. Further, the guide roller 7 is rotatably mounted on a support block 31d continuously provided on the upper side of the free end of the main rod 31 via a vertical support shaft 7a, and the height of the upper end of the guide roller 7 is transferred to the workpiece. It is set to be higher than the rearmost portion, that is, the outer end of the inclined support surface 19a in the standing posture of the tool 3. Reference numeral 31e is a substantially triangular reinforcing plate welded and fixed to the upper corner of the joint between the main frame 31 and the support block 31d. The reinforcing plate reinforces the joint, and the top of the guide roller 7 closes to the surface of the guide roller 7. Performs the function of preventing tilting of the shaft center due to load.

As shown in FIG. 10 and FIG. 11, an adjustment function chamber 33 of the retreat position adjusting means 12 is installed at the bottom of the underframe 13, and two guide shafts 34, 34 are provided between both end walls 33a, 33b. 34 and a screw shaft 35 arranged in the lower part of the middle of these are installed in parallel along the lengthwise direction of the transfer section 1, and a sliding block 36 to which a guide roller 36a having a vertical axis is attached is provided on both guide shafts. 34,34
It is slidably fitted over and the screw shaft 35 has a bottom wall.
A movement stopper 38 with a rotation stopping pin 38a that engages with the guide slit 37 of 33c is screwed. On the outside of the adjustment function chamber 33, the hydraulic cylinder 39 is installed on one end wall 33a.
The piston rod 39a is connected to the sliding block 36 at its tip end. Further, a sprocket 40a is fixed to one end of the screw shaft 35, while a drive shaft 42 with a rotation handle 41 having a sprocket 40b fixed to the outside of the side wall on the opposite side is attached to the underframe 13 via a mounting frame 42a. It is installed and is an endless chain 4 between both sprockets 40a and 40b.
3 is wrapped around. Therefore, the rotary shaft 41 is rotated by the rotating operation of the rotary handle 41, and the movement stopper 38 moves along the screw shaft 35 accordingly, but the lower surface side of the sliding block 36 contacts the movement stopper 38. Since the contact portion 36b which can contact is provided, the stopper 38 defines the retracting limit position of the piston rod 39a. Note that 33d is an upper cover of the adjustment function chamber 33.

Further, a pair of projecting pieces 11a, 11a projecting to one side are fixedly provided at one location of the interlocking rod 11, and the guide groove 44 in the width direction of the transfer path 1 is formed between the projecting pieces 11a, 11a. The guide roller 36a of the sliding block 36 is fitted. Therefore, the interlocking rod 11 is pushed and pulled by the drive of the hydraulic cylinder 39, and along with this movement, the interlocking rod 11 is actuated through the connecting pin 32a to the operating rod 3.
The rotating arm 8 which pivotally mounts 2 will rotate.
The rotation range of the arm 8 is defined by the stroke of the piston rod 39a of the hydraulic cylinder 39. At the limit of extension of the piston rod 39a, the guide roller 7 is positioned in parallel with the fixed roller 5 as shown by the solid line in FIG. The guide roller 7 is set so as to face the fixed roller 5 and the transfer portion 1 in the width direction in the retreat limit of the piston rod 39a at the maximum stroke. Since the retreat limit of the piston rod 39a is determined by the position of the movement stopper 38, the piston rod 39a is sandwiched between the fixed roller 5 and the guide roller 7 which determine a plurality of workpiece reference positions on the horizontal roller 2 of the transfer section 1. By operating the rotary handle 41, the backward limit position of the guide roller 7 can be easily adjusted according to the parallel width of a plurality of works to be transferred.

Next, the parallel loading method of the present invention using the loading device having the above construction will be described with reference to FIG.

First, before the transfer operation, the fixed position of the standby stopper 6 and the backward limit position of the guide roller 7 are set according to the parallel width of the plurality of works W to be transferred. For example, when 6 workpieces W each having the diameter shown in the figure are transferred at a time, the standby stoppers 6 are received by the stoppers 6 as shown by the solid line in the drawing, and the waiting stoppers 6 are arranged in parallel on the inclined and inclined carrying-in rail 4 from the top. It suffices to adjust so that the side end 19b of the work supporting plate 19 of the work transfer device 3 is located between the seventh work W and the seventh work W. Further, the guide roller 7 rotates the retreat position adjusting means 12 so that the six works W on the horizontal roller 2 of the transfer unit 1 can be positioned with the fixed roller 5 at the retreat limit as shown by the solid line in the figure. The stroke of the piston rod 39a of the hydraulic cylinder 39, that is, the turning range of the turning arm 8 may be adjusted by rotating the handle 41. The widthwise distance of the transfer path 1 between the fixed roller 5 and the guide roller 7 in the above positioning is slightly larger than the parallel width of the six works.

Note that, for example, when three workpieces W having the same diameter are transferred at a time, the fixed position of the standby stopper 6 and the retracting limit position of the guide roller 7 are as shown by the two-dot chain line in the figure.
Of course, even when the number of transferred works is other than the above or the work diameter is different from that shown in the figure, the position may be adjusted in the same manner as above according to the parallel width of the works to be handled.

Before the transfer, the work transfer tool 3 is kept in the laid-down posture, and the guide roller 7 is kept waiting at the forward limit position along with the fixed roller 5 as shown by the alternate long and short dash line in FIG.

The workpieces are sequentially placed on the inclined carrying-in rail 4 in parallel with the transfer unit 1, and are tumbled on the rails 4 by gravity to wait in parallel while the leading workpiece is received by the standby stopper 6. At this time, in the configuration of the embodiment, since the rail 4 has a gentle inclination and the portion of the standby stopper 6 that receives the work is the impact plate 26 that is elastically pressed by the coil spring 27 and has an impact absorbing function, Occasionally causes little impact.

Thus, if the workpieces stand by in parallel on the rail 4,
The work transfer device 3 is rotated by a predetermined angle in the standing direction by the movement of the interlocking rod 10 by the hydraulic cylinder 9. As a result, only the required number of workpieces on the rail 4 are lifted onto the inclined support surface 19a of the workpiece support plate 19. Since the inclined support surface 19a is higher than the top of the standby stopper 6 as shown by the alternate long and short dash line in FIG. Although it tries to roll downward on the inclined support surface 19a, the leading work is received by the guide roller 7 waiting at the initial stage of this rolling. Here, when the guide roller 7 is retracted by the drive of the hydraulic cylinder 39, that is, the retracting movement of the piston rod 39a, a plurality of workpieces are kept in parallel on the inclined support surface 19a on the horizontal roller 2 of the transfer unit 1. Roll up to. Then, after the guide roller 7 is stopped at the backward limit, when the work transfer tool 3 is rotated in the fall direction, the backward limit position of the guide roller 7 remains the parallel workpieces on the transfer unit 1 on the opposite side. Since the workpieces are positioned by, the workpieces move in a parallel state between the fixed roller 5 serving as a positioning member and the guiding roller 7 serving as a guiding member together with the downward movement of the workpiece transfer tool 3, and the workpieces are placed on the horizontal roller 2. It is positioned and placed without any impact.

In the configuration of the above embodiment, the guide roller 7 is the transfer unit 1.
Since it retreats along a circumferential line centered on a position close to the reference side, the retreat speed of the transfer unit 1 in the width direction becomes smaller as it approaches the retreat limit of the guide roller 7. Therefore, the impact due to the stop of the guide roller 7 and the work at the backward limit becomes very small, and the disturbance of the parallel state does not occur.

On the other hand, in this transfer process, before the transfer, the next top work on the rail 4 is the work transfer tool 3 from the time when a plurality of previous works were lifted by the work transfer tool 3. The side edge 19 of the work support plate 19 is returned until it returns to the lying position.
It is received by b, and by this return, it rolls on the rail 4 together with the following work and is received by the standby stopper 6.

Thus, the plurality of works transferred to the transfer unit 1 are intermittently sent to the cutting device side in the axial direction by the work carrying-in means (not shown) of the cutting device A in the parallel state, and the work is transferred at the required length. It is bundled and cut. Then, each time the bundle cutting of these works is completed, the above-mentioned transfer operation is repeated, so that the required number of works on the rail 4 are sequentially transferred to the transfer unit 1 for cutting.

The detailed structure of each member of the loading device used in the method of the present invention can be modified in various ways other than the above-described examples, and for example, the work transfer device 3 may be vertically moved up and down. Further, as the guide positioning member, various shapes other than the illustrated guide roller 7 can be used, and the guide positioning member has a cushioning function such as the illustrated standby stopper 6,
It is also possible to adopt a configuration of linearly moving back and forth, a configuration in which the forward limit position can be adjusted according to the diameter of the work, and the like.

In addition, contrary to the example, the position of the positioning member corresponding to the fixed roller 5 may be adjustable by keeping the forward / backward movement position of the guide roller 7 constant.

Furthermore, the present invention is not limited to cutting, but can be applied as a transfer means in the same manner as when a long work is carried in in the axial direction and subjected to various processing.

(Effects of the Invention) As described above, according to the parallel loading method for long workpieces of the present invention, the plurality of workpieces waiting in parallel on the inclined loading rail do not interfere with each other, and the workpieces are placed on the horizontal roller of the transfer unit. Can be easily and reliably transferred, and the transferred multiple workpieces are naturally positioned in a parallel state without any disturbance. After transfer, special positioning such as width adjustment is performed. No operation required. Further, the method of the present invention can be applied without trouble even if the number of transferred pieces and the diameter of the work change.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view showing an example of a loading device used in the method of the present invention, FIG. 2 is a plan view of the same, and FIG.
FIG. 4 is a perspective view of the main part of the apparatus, FIG. 4 is a plan view showing the details of the main part, FIG. 5 is a rear view of the work transfer tool part, and FIG. 6 is a main part for explaining the transfer operation. FIG. 7 is a vertical sectional side view, FIG. 7 is a sectional view taken along line VII-VII in FIG. 4, and FIG. 8 is VIII-VI in FIG.
II sectional view taken along the line II, FIG. 9 is a sectional arrow view taken along the line IX-IX of FIG. 8, FIG.
FIG. 11 is a sectional arrow view taken along the line XI-XI of FIG. 1 ... Work transfer section, 2 ... Horizontal roller, 3 ... Work transfer tool, 4 ... Inclined loading rail, 5 ... Fixed roller (positioning member), 6 ... Standby stopper, 7 ... Guide roller (Guiding member), 19a ... Inclined support surface, W ...
work.

Claims (1)

[Claims] 1. A plurality of long circular work pieces having a circular outer periphery which are rotatably waiting in a parallel state between a plurality of inclined loading rails are transferred onto a horizontal roller of a work transfer section in a parallel state. A parallel loading method, which has an inclined support surface after receiving a leading work piece to be put on standby by a standby stopper whose position can be adjusted in the length direction of the rail at a position corresponding to the parallel width of the work pieces to be transferred. A work transfer tool that can move up and down freely is moved up to lift a required number of works, and the leading end of the lifted works is received by a guide member that can move back and forth in the width direction of the transfer unit.
By retracting the guide member, the plurality of lifted workpieces are rolled along the inclined support surface in a parallel state above the transfer unit, and then the workpiece transfer tool is moved downward to retract the workpieces. A plurality of works parallel to each other in a state of being sandwiched between a limited guide member and a positioning member opposed to the guide member and placing the plurality of works on the horizontal roller in parallel. Loading method.