JPH0446799A - Long size material cutting device - Google Patents

Abstract

PURPOSE:To eliminate bother of aligning one end of long size materials by forming a hopper into a longitudinal cylindrical form. CONSTITUTION:A hopper 1 is formed into a longitudinal cylindrical form to be oscillated by an oscillating device, and when long size materials A are thrown into the hopper 1 longitudinally and the hopper 1 is oscillated vertically or oscillated horizontally or turned by the oscillating device, lower ends (a) of the long size materials A are slipped down from the outside to the inside along the inclination of the top surface 3a of a pan 3 inside of the hopper 1, and only one of the lower ends (a) is made to enter to a passing hole 4 of the pan 3. At this stage, since the long size material A is positioned longitudinally and only the lower end (a) is fallen into the passing hole 4, even if the long size material A is curved a little or twisted, only the lower end (a) is made to enter to the passing hole 4 securely.

Description

Detailed Description of the Invention (Industrial Application Field) The long object cutting device of the present invention can be used to cut rods used in felt pen nibs, plastic pen nibs, etc., and rods used in other fields. This is used to automatically cut long objects such as vibrators into predetermined dimensions.

(Prior art) The plastic nib used in felt-tip pens, etc.
A plastic bar A as shown in FIG. 11A is cut to a predetermined size as shown in the same figure, and its tip B is cut into a tapered shape as shown in FIG. 11C, for example.

The applicant of the present application previously developed a long object cutting device that automatically cuts this type of bar material into predetermined dimensions, and filed an application for registration of a utility model (Utility Model No. 1-114251).

In this cutting device, as shown in Fig. 12, a bar material A is loaded horizontally into a hopper C, is stirred by a stirring pulley D, and is cut horizontally into a bar material from a passage K formed at the bottom of the hopper C. The bars A that are aligned one by one and dropped from the passage K are carried one by one in the elongated direction on the carrier E, pass through the guide hole G of the guide plate F, and their tip a hits the stopper H. A cutter J provided on the guide root F is automatically lowered to cut the bar A to a predetermined length.

(Problems to be Solved by the Invention) However, the long object cutting device shown in FIG. 12 has the following problems.

■If the diameter of the plastic bar A is small, it may curve,
When the rods A in the hopper C are agitated by the stirring pulley D, it becomes difficult for them to fall into the passage K, and it becomes difficult for the rods A to be aligned vertically. In addition, if the deformation is significant, even if the object falls into the passageway, it will get caught on the peripheral wall of the passageway and will not fall, or even if it falls from the passageway K, it will be difficult to get onto the conveyor E. Furthermore,
The bar material A sent out by the carrier E may not pass smoothly through the guide hole G, but may hit another part of the guide plate F and fall from the carrier E.

(2) In order to put the bar material A into the hopper C, it is necessary to align the longitudinal end faces of the bar material A, and this work is troublesome.

■In order for the bars A to fall smoothly into the passage K, it is necessary to separate the bars A so that they do not get entangled with each other in the hopper C before putting them into the hopper C. This work is also troublesome.

(Objective of the Invention) The object of the present invention is to ensure that the bars are automatically spread out in the hopper without aligning the end faces of the bars to be thrown into the hopper or unraveling the bars. Sent out one by one,
Moreover, it is an object of the present invention to provide a long object cutting device that is small and does not take up much space.

(Means for Solving the Problems) A long object cutting device according to claim 1 of the present invention is provided in FIGS.
As shown in FIG. 5, the long object cutting device feeds long objects A such as bars and pipes one by one in the longitudinal direction from a hopper l and cuts the long objects A into predetermined lengths with a cutter 7. A hopper 1 is formed into a vertically long cylinder shape, and a tray 3 is attached to the bottom of the hopper 1, and the tray 3 has a passage hole 4 in the center that is large enough to allow only one long object A to pass vertically. A vibrating device 2 is provided, the top surface 3a of which is formed with a downward slope from the outer periphery toward the center, and which vibrates the hopper 1 to feed the elongated objects A in the hopper 1 into the passage hole 4 one by one. At the bottom of the hopper l, pull-out rollers 5a and 5b are provided facing each other to pinch and pull out the long article A sent out from the passage hole 4 from both sides, and the cutter 7 is connected to the pull-out rollers 5a and 5b. It is characterized by being provided further down.

The long object cutting device according to claim 2 of the present invention is as follows.

The drawing roller 5a as shown in FIGS. 1 to 3.

Fitting grooves 6a, 6 into which the outer periphery of the long object A fits into the outer periphery of 5b
b is formed.

The long object cutting device according to claim 3 of the present invention is shown in FIGS.
As shown in FIG. 3, an air cylinder 8 for reciprocating the cutter 7 is connected to the cutter 7, and a discharge nozzle 9 is provided near the cutter 7 to blow away the long object A cut by the cutter 7. The nozzle 9 is characterized in that exhaust gas discharged from the air cylinder 8 when the air cylinder 8 is driven is supplied to the nozzle 9.

(Function) In the long object cutting device according to claim 1 of the present invention, the hopper 1 has a vertically elongated cylindrical shape and is vibrated by the vibration device 2. When the object A is loaded vertically and the hopper l is vibrated up and down by the vibration device 2, rocked left and right, or rotated, the lower end a of the long object A is inside the hopper 1. It slides down from the outside to the inside along the slope of the upper surface 3a of the saucer 3, and only one of the lower end portions a enters into the passage hole 4 of the saucer 3.

At this time, the long object A is oriented vertically and only the lower end a falls into the passage hole 4, so even if the long object A is somewhat curved or twisted, only the lower end a will fall into the passage hole 4. It can enter into the passage hole 4 reliably.

Then, as shown in FIG. 6, the long object A whose lower end a has fallen into the passage hole 4 is sandwiched from both sides by the fitting grooves 68.6b of the pull-out rollers 5a and 5b as shown in the same figure.
It is pulled out downward by the rotation of 5b. As a result, when the lower end a hits the stopper/sensor 40, the cutter 7 moves laterally as shown in FIG. 7 and cuts.

In the long object cutting device according to the second aspect of the present invention, the insertion grooves 68.6b are formed on the outer peripheries of the pull-out rollers 5a and 5b, so that the lower end of the long object A that has fallen into the passage hole 4 Since the outer periphery of the object A is fitted into the fittings 6a and 6b and clamped therebetween, the elongated object A is reliably pulled out by the rotation of the rollers 5a and 5b.

In the long object cutting device of the third aspect of the present invention, the long object A cut by the cutter 7 is discharged from the air cylinder 8 when the cutter 7 is moved as shown in FIG. Since it is blown away by the exhaust gas ejected from 9, the cutting and blowing of the long object A are synchronized, and the cut long object A is reliably blown away.

(Example) Figures 1 and 2 show an example of the long object cutting device of the present invention.
In the figure, l is a vertically long cylindrical hopper into which the long object A is placed vertically. This hopper 1 is made of transparent plastic or the like. In FIGS. 1 and 2, two hoppers 1 are arranged side by side. A saucer 3 is attached to the bottom of each hopper 1. This tray 3 has a passage hole 4 in the center that is large enough for only one long object A to pass vertically.
is formed, and the upper surface 3a of the saucer 3 has the same passage hole 4 from the outer periphery.
It is formed with a downward slope towards.

Reference numeral 11 in FIGS. 1 and 2 is a support ring, which is used to support the long object A placed in the hopper 1 so that it does not tilt more than necessary. It is set inside the section 10 so as to be detachable.

Reference numeral 12 in FIGS. 1 and 2 is a coil spring, whose lower end is supported by the mounting board 13 and whose upper end is supported by the hopper 13.
installed at the bottom of the

Reference numeral 2 in FIGS. 1 and 2 is a vibration device that vibrates, swings, or rotates the cylindrical hopper 1. As clearly shown in FIG. 2, this vibration device 2 has a driving body 15 such as a motor
A cam 16 is attached to the cam 16, and the lower end of the elevating rod 17 is rotatably attached to the eccentric position of the cam 16.
The upper end of the hopper 1 is rotatably attached to a connecting body 18 that connects the two hoppers 1, and a guide 19a attached to the connecting body 18 is slidably attached to a vertical rail 19b. In this vibration device 2, when the driving body 15 is rotated, the cam 16 is rotated, and the other end of the elevating rod 17 is reciprocated in the vertical direction, whereby the guide 19a of the connecting body 18
The hopper 1 is vibrated in the vertical direction by a so-called crank motion in which the hopper 1 moves back and forth in the vertical direction along the rail 19b. At this time, the coil spring 12 acts as a buffer material to suppress resonance of the hopper 1.

5a and 5b in FIGS. 1, 2, and 5 are the hoppers 1
This is a drawer row for pinching and pulling out the long objects A that have fallen one by one into the passage holes 4 of the receiving tray 3 from both sides. This roller 5
Insertion grooves 6a and 6b into which the elongated object A is inserted are formed on the outer peripheries of the members a and 5b, as shown in FIG. 5 and 8. This roller 5a
, 5b is the recess 21 for mounting the roller mounting shafts 20a and 20b.
It is attached by screws 23 to. In this case, the elongated object A pulled out from the passage large 4 is positioned so as to fit between the fitting grooves 68, 6b of the rollers 5a, 5b. 24a and 24b in FIGS. 1 and 2 are gears that mesh with each other, and these are attached to one longitudinal end of the roller attachment shafts 20a and 20b. One of these gears 24
A pinion 25 is engaged with a, and the pinion 25 is attached to a drive source 26 such as a motor. This results in
When the drive source 26 rotates in the direction of arrow X in FIG.
4a and 24b are rotated in the direction of arrow W in the figure, and the roller mounting shafts 20a and 20b and the pull-out rollers 5a and 5b are rotated in the same direction, respectively.

The pull-out rollers 5a, 5b may be provided with two or more types of fitting grooves 68.6b of different sizes as shown in FIG.
0a and 20b, and the mounting position is changed so that either groove 6a or 6b that matches the thickness of the long object A is located directly below the long object A.

Further, the pull-out rollers 5a and 5b have fitting grooves 6a.

Prepare two or more types of 6b with different dimensions,
Adjust the roller mounting shafts 20a and 2 to match the diameter of the long object A.
The attachment to 0b may be changed.

Reference numeral 7 shown in FIG. 3 is a cutter, which has cutting blades 7a and 7b formed on both sides in the width direction.

30 shown in the same figure is a cutter mounting body, which has a cutter mounting part 31 formed in the center in the longitudinal direction to which the cutter 7 is mounted by screwing, etc., and horizontally long openings 32a on both sides of which the long object A passes through. , 32b are formed. Further, the attachment is arranged in a slide groove 33 formed on the lower surface of the substrate 13 in a direction perpendicular to the conveyance direction of the elongated object A. Furthermore, this cutter mounting body 30 is connected to an air cylinder 8, and is capable of reciprocating movement along the slide groove 33 in a direction intersecting the conveying direction of the long object A by expanding and contracting the rod of the cylinder 8. .

9 shown in FIGS. 3 and 6 is a discharge nozzle.

This discharge nozzle 9 is for discharging the residual air g remaining in the air cylinder 8 when the air cylinder 8 is driven and blowing away the long object A cut by the cutter 7, and also serves as a stopper and a sensor. It is installed above 40. As shown in FIG. 6, this discharge nozzle 9 has a front chamber 8a and a rear chamber 8b of the air cylinder 8 connected to pipes 34a, 34b,
They are connected via a switching valve 35.

Reference numeral 36 shown in FIG. 6 is a drawing guide attached to the tray 3 of the hopper 1 and arranged above the drawing rollers 5a, 5b. A guide hole 36a is formed in this pull-in guide 36 for guiding the long object A pulled out from the passage hole 4 of the receiving tray 3 of the hopper 1 to the vicinity of the pull-out rollers 5a and 5b. , 5b
It is formed into a curved surface that tapers downward to match the outer periphery of the.

Reference numeral 37 shown in FIG. 6 is a feed-out guide attached to the upper surface of the substrate 13 and disposed below the pull-out rollers 5a, 5b. This feed-out guide 37 has a guide hole 37a for guiding the long object A fed out by the pull-out rollers 5a and 5b to the nearest position of the cutter 7.
is formed, and its outer shape is formed into a curved surface tapering upward in accordance with the outer periphery of the rollers 5a and 5b.

Reference numeral 40 shown in FIG. 3 is a stopper/sensor that turns on when the lower end a of the elongated object A abuts against it.

This stopper/sensor 40 is mounted below the substrate 13, and the distance #IL (FIG. 6) from the top surface 40a to the bottom surface 13a of the substrate 13 is equal to the length of the long object A to be cut. They are set to have the same length.

When the lower end a of the long object A comes into contact with the stopper/sensor 40, the light from the light emitting fiber 41 in the stopper/sensor 40 is transmitted to the lower end a, as shown in FIG.
When the reflected light enters the light-receiving fiber 42 in the stopper/sensor 40 and is detected by a detector (not shown), a switch (not shown) is turned on and the air cylinder 8 is turned on. It should work. The strut bar/sensor 40 is attached to a screw 44 via a mounting member 43 and positioned by a nut 50, and the position of attachment to the screw 44 can be adjusted by changing the position of the nut 50.

Reference numeral 45 shown in FIGS. 1 and 3 is a remaining material falling passage formed below the stopper/switch 40, and is used for the long material A.
This is to allow the last remaining part (remaining material R) after cutting to fall downward without hitting the stopper/sensor 40. This residual material falling passage 45 is cylindrical, and its lower end is formed in a tapered shape that slopes downward from the upper back to the lower front, and furthermore, the lower end penetrates the sliding plate 47 and protrudes below it. ing. This allows the remaining material R to fall below the sliding plate 47.

Reference numeral 46 in FIG. 1 is a good product sliding plate, which is used to slide down good products cut by the cutter 7, and is installed around the passage 45 so that it gradually slopes downward from the back to the front. Reference numeral 47 in FIG. 1 is a good product receiving surface installed in front of the sliding plate 46, which receives the good products that slide down the sliding plate 46.

Reference numeral 48 shown in FIG. 2 is an air valve, and 49 is a start switch.

This cutting device is used, for example, as follows.

As shown in FIG. 6, the air cylinder 8 is contracted and the cutter mounting body 30 and the cutter 7 are located on the right side, and the cutter mounting body 3
The opening 32a on the left side of the cylinder 8 is located below the guide hole 37a of the push-in guide 37, and a switching valve 35 between the air cylinder 8 and the discharge nozzle 9 connects the front chamber 8a of the cylinder 8 and the discharge nozzle 9. It is connected.

When the start switch 49 shown in FIG. 2 is turned ON from the state shown in FIG. One of them slides down the upper surface 3a of the saucer 3 from the outer periphery toward the center, and its lower end a falls into the passage hole 4, and the fallen long object A passes through the guide hole 36a of the retraction guide 36, Insertion grooves 6a for pull-out rollers 5a and 5b,
6b and is sandwiched between both rollers 5a and 5b,
By rotating both rollers 5a and 5b in the direction of arrow W in FIG. 6, they are sent out downward. Furthermore, this long object A is the sixth
Pass through the guide hole 37a of the push guide 37 as shown in the figure,
Pass through the opening 32a on the left side of the cutter mount 3o,
sent downward.

When the lower end a of the long object A hits the stopper/sensor 40, the stopper/sensor 40 is turned ON and the rod of the air cylinder 8 is extended as shown in FIG. 3.degree. is moved in a direction intersecting the conveying direction of the long object A (arrow y direction in the figure). As a result, the long object A is cut by the left cutting blade 7a of the cutter 7 attached to the attachment body 30. At this time, the discharge air g from the front chamber 8a of the air cylinder 8 passes through the switching valve 35 and is ejected from the discharge nozzle 9, thereby blowing away the cut long object A as shown in FIG. The long object A slides down the good product sliding plate 46 forward and is received in a good product input direction 47 installed in front of it. Note that the vibration device 2 and the pull-out roller 5a,
The elongated object A extruded by the rotation of the cutter 7 hits the back surface of the cutter 7 and is not extruded any further.

When the cut bar falls, the stopper/sensor 40 is turned off, the switching valve 35 is switched, and the rear chamber 8b of the air cylinder 8 and the discharge nozzle 9 are connected.

Further, when the cutter 7 passes the long object A, the long object A passes through the opening 32b on the right side of the cutter mounting body 30 and is pushed downward by the rotation of the vibrating bag M2 and the pull-out rollers 5a and 5b. Ru. When the lower end a of the long object A hits the stopper/sensor 4o, the stopper/sensor 4o is turned on and the air cylinder 8 is turned on as shown in Fig. 8.
The rod is contracted, the cutter attachment body 30 is moved to the right (direction of arrow Z in the figure) intersecting the conveying direction of the long object A, and the long object A is cut by the cutting blade 7b on the right side of the cutter 7. be done. Further, the exhaust air g from the rear chamber 8b of the air cylinder 8 is ejected from the exhaust nozzle 9, thereby
As shown in the figure, the cut long object A is blown away, slides down the non-defective product sliding plate 46, and is thrown into the non-defective product input box 47.

By repeating this process, the long objects A are successively cut into predetermined lengths.

Further, when the long object A is cut into a predetermined length one after another as described above, the remaining portion of the long object A may be less than the predetermined length. In this embodiment, as shown in FIG. 10, the bar material (remaining material R) that is less than the predetermined length is pushed by the next long object A and sent downward, but the remaining material R is moved to the stopper/sensor 40. However, it is eventually pushed out by the next long object A, falls into the remaining material fall passage 45 provided below the switch 40, and is separated from the good long object A cut into the predetermined length. be done.

(Effect of the invention) The long object cutting device of the present invention has the following effects.

(2) Since the long objects A can be loaded vertically into the vertically elongated hopper 1, there is no need to worry about aligning one end of the long objects A as in the conventional hopper.

(2) Since the hopper 1 is vibrated, swung, or rotated by the vibration device 2, the long objects A in the hopper 1 are automatically separated within the hopper 1. Therefore, unlike conventional hoppers, there is no need to take the trouble of breaking up the long object A before putting it into the hopper.

■The long object A in the hopper 1 slides down along the upper surface 3a of the saucer 3, and only one piece is discharged from the passage hole 4, so the long object A may be slightly curved or twisted. Even though
The long object A surely falls downward from the passage hole 4.

(2) The long object A that has fallen from the hopper 1 is pinched from both sides by the fitting grooves 68.6b of the bow rollers 5a and 5b, and is pulled out downward by the rotation of the openings 5a and 5b. Transport defects such as the long object A getting caught in the hopper and not falling or falling from the transport body do not occur.

(2) Since the various members from the hopper 1 to the exhaust nozzle 9 are arranged vertically, the device is compact and does not take up much space.

■ When the cutter 7 is moved, the air g discharged from the air cylinder 8 is ejected from the discharge nozzle 9, and only the long material A cut to a predetermined length is blown away, and the remaining material R shorter than the predetermined length is not blown away. Therefore, non-defective products and remaining material R are automatically classified.

(2) If a pull-in guide 36 is provided between the draw-out rollers 5a, 5b and the tray 3, and a push-in guide 37 is provided between the rollers 5a, 5b and the cutter 7, the long object A can be drawn out.
Delivery becomes even more stable.

[Brief explanation of the drawing]

FIG. 1 is a front perspective view showing an embodiment of the long object cutting device of the present invention, FIG. 2 is a rear perspective view of the same cutting device, and FIG. 3 is a perspective view of a cutter drive device of the same cutting device. Fig. 4 is an explanatory diagram of a stopper/switch used in the cutting device, Fig. 5 is a cross-sectional view of a pull-out roller used in the cutting device, and Figs. 6 to 9 are long lengths produced by the cutting device. An explanatory diagram of the cutting operation of an object. Fig. 1O is an explanatory diagram of the processing operation of a long object (remaining material) that is less than a predetermined length by the same cutting device. Fig. 11 a - c is an explanation of cutting and machining of a long object. 12 are perspective views of a conventional long object cutting device. 1 is a hopper, 2 is a vibration device 3 is a saucer,
3a is the upper surface 4 is the passage hole 5a, 5b is the pull-out roller 6a, 6b is the insertion groove 7 is the cutter, 8 is the air cylinder 9 is the discharge nozzle, A is the long object Figure 11 Figure 12 Procedure amendment form

Claims (3)

[Claims] (1) In a long object cutting device that feeds long objects A such as bars and pipes one by one in the longitudinal direction from a hopper 1 and cuts the long objects A into predetermined lengths with a cutter 7, the hopper 1 is A receiving tray 3 is attached to the bottom of the hopper 1, which is formed into a vertically elongated cylindrical shape, and the receiving tray 3 has a passage hole 4 in the center thereof large enough to allow only one elongated object A to pass through vertically. The top surface 3a is formed to be sloped downward from the outer periphery toward the center, and the hopper 1 is provided with a vibrating device 2 that vibrates it and feeds the long objects A in the hopper 1 into the passage hole 4 one by one, Pull-out rollers 5a and 5b are provided below the hopper 1 to face each other and pinch and pull out the elongated object A sent out from the passage hole 4 from both sides, and the cutter 7
is provided below the pull-out rollers 5a and 5b. (2) The long object cutting device according to claim 1, wherein fitting grooves 6a and 6b into which the outer periphery of the long object A is fitted are formed on the outer peripheries of the pull-out rollers 5a and 5b. (3) An air cylinder 8 for reciprocating the cutter 7 is connected to the cutter 7, and the cutter 7 is placed near the cutter 7.
A discharge nozzle 9 is provided for blowing off the long object A cut by the machine, and the discharge nozzle 9 is supplied with exhaust gas discharged from the air cylinder 8 when the air cylinder 8 is driven. A long object cutting device according to claim 1 or 2.