JPS5839607B2 - Side trimmer blade attachment/detachment device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a side trimmer blade attaching/detaching device for cutting both edges of a strip with ears to finish the strip to a constant width.

Side) An IJ machine is usually installed in a series of strip processing lines, and has the function of cutting both edges of the continuously fed strip using a knife.

Since both edges of the strip are cut by shearing, the blades are subject to wear and must therefore be replaced frequently.

Conventional methods for replacing blades include providing a flange, a blade fitting part, and a threaded part at the tip of the blade drive shaft, and tightening and fixing the blade fitted into the blade fitting part with a nut, or There is a method in which a flange and a blade fitting part are provided at the tip of the blade drive shaft, a bolt is inserted into a bolt hole provided in the flange and the blade, and the bolt is tightened with a nut.

However, a pinch roll is installed on the input side of the strip of the side trimmer, and a processing device for scrap cut by the side trimmer and its auxiliary equipment is installed on the output side, and the side trimmer is equipped with a processing device for scrap cut by the side trimmer and its auxiliary equipment. Since a plate holder is provided for both blades on the drive side, there is very little work space, and therefore the task of replacing the blades described above is extremely troublesome.
It is not possible to carry out work quickly, and furthermore, there are problems such as threaded portions being worn out, bolts becoming loose, and blade fixation becoming uncertain.

The present invention has been made for the purpose of providing a blade attaching/detaching device that can easily and easily attach and detach a blade even in a narrow work space. A cutter fitting part is provided in which the spacing ring of the blade is removably fitted, and one side of the cutter or the spacing ring fitted to the cutter fitting part is brought into contact with a predetermined position in the longitudinal direction of the cutter drive shaft. A sleeve movable in the axial direction is provided in a hole drilled along the axial center line of the cutter drive shaft, and a sleeve movable in the axial direction is fixed, and the cutter drive shaft is moved from within the hole of the sleeve. A flange portion having an outer diameter smaller than the outside diameter of the cutter fitting part of the cutter drive shaft is integrally provided on the tip portion of the shaft tip that protrudes outward, and the collar portion that protrudes outward from the tip of the cutter drive shaft of the sleeve. One end of a plurality of links arranged radially is pivotally attached to the outer periphery of the part, and a plurality of presser plates arranged at required intervals in the circumferential direction are fixed to the tip of the cutter drive shaft. A clamp plate is fitted into a groove extending in the radial direction of the cutter drive shaft provided between the folding plates so as to create a required gap between the clamp plate and the tip of the cutter drive shaft, and the clamp plate is moved in the radial direction of the cutter drive shaft. The sleeve is configured to be able to slide and move in the axial direction of the blade drive shaft, and when the sleeve protrudes in front of the blade drive shaft such that the collar portion fixed to the tip portion of the sleeve is separated from the clamp plate. The sleeve is arranged such that the radially outer end of the clamp plate is smaller than the cutter fitting part of the cutter drive shaft so that the spacer ring and the cutter can be removed from the cutter drive shaft, and the collar is in contact with the clamp plate. When RjJ moves backward toward the rear of the cutter drive shaft, the radial outer end of the clamp plate expands beyond the cutter fitting part of the cutter drive shaft, and the clamp plate connects to the cutter or the spacer ring via the spacer ring or cutter. The clamp plate is pivotally attached to the other end of each link so as to be able to press and fix the cutter to the cutter holder, and the cutter and the clamp plate for fixing the cutter to the tip side of the cutter drive shaft. A cutter fitting part is provided in which the spacing ring is removably fitted, and one side of the cutter or the spacing ring fitted to the cutter fitting part is brought into contact with a desired position in the longitudinal direction of the cutter drive shaft. A sleeve movable in the axial direction is provided in a hole drilled along the axial center line of the cutter drive shaft, and a sleeve movable in the axial direction is fixed, and the cutter drive shaft is moved from within the hole of the sleeve. A flange portion having an outer diameter smaller than the outside diameter of the cutter fitting part of the cutter drive shaft is integrally provided on the tip portion of the shaft tip that protrudes outward, and a collar portion is provided at a predetermined position on the tip side of the cutter drive shaft of the sleeve on the outer periphery. The portion is formed into a tapered shape with a large diameter on the brim side and a small diameter on the blade drive shaft side, and a plurality of grooves extending in the axial direction along the tapered portion are formed at required intervals in the circumferential direction on the outer periphery of the tapered portion. A clamp plate provided with a protrusion that fits into the groove is disposed between the boxwood portion and the tip of the blade drive shaft so as to create a required gap between the clamp plate and the tip of the blade drive shaft. The clamp plate is configured to be able to slide in the radial direction of the cutter drive shaft and move in the axial direction of the cutter drive shaft, and a guide tool for guiding each clamp plate in the radial direction of the cutter drive shaft is attached to the cutter drive shaft. When the sleeve protrudes in front of the blade drive shaft so that the collar attached to the tip and fixed to the tip of the sleeve separates from the clamp plate, the outer end in the radial direction of the clamp plate is attached to the blade drive shaft. When the sleeve is retracted toward the rear of the cutter drive shaft so that the spacer ring and the cutter can be removed from the cutter drive shaft, and the collar comes into contact with the clamp plate, The clamp plate, the radially outer end of the clamp plate being expanded beyond the cutter fitting part of the cutter drive shaft, can press and fix the cutter or the spacing ring to the cutter holder via the spacing ring or the cutter,
The present invention is characterized in that the clamp plate is engaged with the guide tool.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 to 5 show a first embodiment of a method and apparatus for attaching and detaching a cutter to an IJ machine.

Bearings 3 provided on the upper knife frame 1 and the lower knife frame 2
, 4, a cutter drive shaft 6 having a clamp drive hydraulic motor 5 attached to one end thereof is rotatably fitted, and a flange-shaped cutter holder 7 and a cutter fitting portion 8 are provided at the other end of the cutter drive shaft 6. , and a hole 9 is bored in the longitudinal axis of the blade drive shaft 6.

The clamp drive shaft 1 is connected to the output shaft of the clamp drive hydraulic motor 5.
0, and the clamp drive shaft 10 is inserted into the hole 9 provided in the cutter drive shaft 6, and the male thread provided at the other end of the clamp drive shaft 10 is connected to a female thread provided in the sleeve 11. Screw it into place.

A bushing 12 is fixed to the end of the hole 9 of the blade drive shaft 6, and the bushing 12 is attached to the sleeve 1.
The portion located within the hole 9 of 1 is supported.

Furthermore, a key 13 is fitted into the bushing 12 and the sleeve 11 so that the sleeve 11 does not rotate even when the clamp drive shaft 10 rotates. The outer diameter of the collar portion 14 at this portion is somewhat smaller than the outer diameter of the cutter fitting portion 8, and an appropriate number of links 15 are provided radially relative to the cutter drive shaft 6 near the intersection of the collar portion 14 and the sleeve 11.
One end of the link 15 (four sets in this embodiment) is pivotally connected, and a clamp plate 16 located between one end of the blade drive shaft 6 and the collar 14 is pivotally connected to the other end of the link 15. .

The clamp plate 16 is in the form of a piece, and is provided with protrusions 17 that extend approximately radially on its sides.Furthermore, the protrusions 17 of the clamp plate 16 are connected to the end of the blade drive shaft 6 by bolts, and are fixed to a fan-shaped presser foot. Groove 1 composed of plate 18
9 so as to be slidable in the radial direction, and between the clamp plate 16 and the tip of the cutter drive shaft 6, when the clamp plate 16 presses and fixes the cutter 20, the clamp plate 16 is fitted to the axial center line of the cutter drive shaft 6. A gap G is provided so that the blade can move along the blade toward the blade drive shaft 6 (see FIG. 4).

Further, between the clamp plate 16 and the cutter 20 provided in the cutter fitting part 8, there is a spacing ring 21 for fixing the cutter 20.
The spacing ring 21 is formed integrally with the cutter 20 and can be fixed to the cutter fitting portion 8 by means of a key 22.

The arrangement of the spacing rings is different between the upper and lower cutters, and in the figure, 23 is an upper cutter foot lifting device, and 24 is a cutter drive gear.

When the side trimmer is cutting both edges of the strip and the tab, the link 15 is in a substantially upright state, and the clamp plate 16 extends to the outside of the circumference of the blade drive shaft 6, and the collar 14 of the sleeve 11 and the clamp plate 16 integrally presses the spacing ring 21 and the cutter 20, so that the spacing ring 21 and the cutter 20 do not come off or wobble in the longitudinal direction of the cutter drive @6 (see FIG. 1).

When the cutter 20 is worn out and needs to be replaced, the clamp drive hydraulic motor 5 is driven while the cutter 20 is stopped rotating 200 times.

Then, the clamp drive shaft 10 also rotates, so the collar 14 and sleeve 11 move in the direction of arrow A in FIG.
Since the link 15 changes from a substantially upright state to an inclined state, the clamp plate 16 is pulled by the link 15 and moves toward the sleeve 11, and the outer end of the clamp plate 16 is placed outside the cutter fitting portion 8. It becomes smaller than the diameter.

Next, the cutter 20 and spacing ring 21 are slid in the direction of arrow A in FIG.

Then, since the distance between the outer ends of the clamp plate 16 is smaller than the hole diameter of the cutter 20 and the spacing ring 21, the cutter 20 and the spacing ring 21 can be easily removed from the cutter fitting portion 8.

When installing a new cutter 20 and spacing ring 21, align the key grooves of the cutter 20 and spacing ring 21 with the key 22, and then move the cutter 20 and spacing ring 21 in the direction of the arrow in FIG. The mating cutter 20 is placed against the cutter holder T, and then the clamp drive hydraulic motor 5 is started to rotate the clamp drive shaft 10 in the opposite direction.

Then, the sleeve 11 and the flange 14 are integrated into the second
Move in the direction of the arrow in the figure.

Then, the link 15 changes from an inclined state to a substantially upright state, so that the clamp plate 16 is enlarged, and the inner part of the collar 14 of the sleeve 11 is attached to the clamp plate 1.
As a result, the cutter 20 is pressed between the cutter holder 7 and the clamp plate 16 through the sides of the cutter 20 .
, the spacing ring 21 is pressed and fixed.

Thus, the cutter 20 can be attached to the cutter drive shaft 6.

6 and 7 show a second embodiment of the side trimmer blade attachment/detachment device of the present invention.

That is, the external shape of a part of the sleeve 11 screwed onto the blade drive shaft 6 is tapered, and the groove 19 is provided in the tapered part.
The protrusion 17 of the tapered part of the clamp plate 16 is fitted into the protrusion 17 of the clamp plate 16.

Also in this example, the clamp plate 16 and the blade ringing shaft 6
A gap is provided between the clamp plate 16 and the tip so that the clamp plate 16 can move toward the blade and drive shaft 6 when pressing and fixing the blade 20.

Furthermore, a suitable spring 26 is installed in the hole 25 provided at the end of the blade drive shaft 6 so that the clamp plate 16 can be smoothly moved in the direction of the arrow C.

Reference numeral 27 in FIG. 6 denotes a guide such as a pin attached to the tip of the blade drive shaft 6 to guide the clamp plate 16 when the clamp plate 16 moves in the radial direction. The same reference numerals as those shown in FIGS. 1 to 5 indicate the same components.

Even with the above-described configuration, the outer end of the clamp plate 16 can be expanded or contracted, so that the spacing ring 21 and the cutter 20 can be easily replaced.

In the third embodiment of the present invention, the sleeve was moved in the axial direction by rotating the clamp drive shaft.
Of course, it is possible to achieve the objective by directly moving the drive shaft in the axial direction using a cylinder or the like, and that various other changes can be made without departing from the gist of the vehicle invention.

The side trimmer blade attaching/detaching device of the present invention is designed to allow the clamp plate to be scaled up or down freely. Work can be done quickly and reliably anywhere.

(It) It is extremely easy to attach the cutter to the cutter exchange unit since there is no need for particular positioning.

etc., exhibits various excellent effects.

[Brief explanation of the drawing]

FIG. 1 is an explanatory cross-sectional view of a first embodiment of the side trimmer blade attaching/detaching device of the present invention, showing a state in which the spacing ring and the blade are clamped, and FIG. 2 is a diagram showing the spacing ring and the blade in FIG. 1. 3 is a partially cutaway side view of FIG. 1, FIG. 4 is an enlarged view taken along the line IV-IV in FIG. 3,
Figure 5 shows the side using the attachment/detachment device shown in the first embodiment)
FIG. 6 is an explanatory cross-sectional view of a second embodiment of the side trimmer blade attaching/detaching device of the present invention, and FIG. 7 is an enlarged view of FIG. 5 is a clamp drive hydraulic motor, 6 is a cutter drive shaft, 10 is a clamp drive shaft, 11 is a sleeve, 16 is a link plate, 17 is a protrusion, 18 is a holding plate, 19 is a groove, 20 is a cutter, and 21 is a spacing ring. be.

Claims (1)

[Scope of Claims] 1. A cutter fitting part is provided on the distal end side of the cutter drive shaft, into which a cutter and a spacing ring for fixing the cutter are removably fitted, and A flange-shaped cutter holder is fixed to the cutter fitting portion in order to bring the fitted cutter or one side of the spacing ring into contact with the cutter fitting portion, and the cutter holder is fixed in the hole drilled along the axis of the cutter drive shaft. A sleeve movable in the axial direction is provided, and the tip portion of the sleeve protrudes outward from the hole of the tip of the cutter drive shaft, and is formed to have an outer diameter smaller than the outer diameter of the cutter fitting portion of the cutter drive shaft. One end of a plurality of links disposed radially is pivotally attached to the outer periphery of the outwardly protruding portion of the tip of the blade drive shaft of the sleeve, and the tip of the blade drive shaft is , a plurality of presser plates arranged at required intervals in the circumferential direction are fixed, and a groove portion extending in the radial direction of the cutter drive shaft provided between each folding plate is provided with a plurality of presser plates arranged at required intervals in the circumferential direction. The clamp plate is fitted so as to create a gap of 1, and the clamp plate is configured to be able to slide in the radial direction of the blade drive shaft and move in the axial direction of the blade drive shaft, and is fixed to the distal end portion of the sleeve. When the sleeve protrudes forward of the cutter drive shaft so that the flange part is separated from the clamp plate, the radially outer end of the clamp plate becomes smaller than the cutter fitting part of the cutter drive shaft, and the spacing ring and When the cutter can be removed from the cutter drive shaft and the sleeve is retracted toward the rear of the cutter drive shaft so that the barb comes into contact with the clamp plate, the radially outer end of the clamp plate is in contact with the cutter drive shaft. The clamp plate is pivotally attached to the other end of each link so that the clamp plate expands beyond the blade fitting portion and presses and fixes the blade or the spacing ring to the blade holder via the spacing ring or the blade. A side trimmer blade attachment/detachment device characterized by: 2 A cutter fitting part is provided on the tip side of the cutter drive shaft, into which the cutter and a spacing ring for fixing the cutter are removably fitted, and the cutter fitting part is provided at a predetermined position in the longitudinal direction of the cutter drive shaft. A flange-shaped cutter holder is fixed to bring one side of the cutter or spacing ring into contact with the joint, and the shaft center is fixed in the hole drilled along the axis of the cutter drive shaft. A sleeve movable in the linear direction is provided, and a collar portion is formed on the tip portion of the sleeve that protrudes outward from the hole of the tip of the blade drive shaft, and has an outer diameter smaller than the outside diameter of the blade fitting portion of the blade drive shaft. is integrally provided, and the outer periphery of the sleeve is formed into a tapered shape with a large diameter on the brim side and a small diameter on the edge of the blade drive shaft at a required position on the tip side of the blade drive shaft, and a A plurality of grooves extending in the axial direction are provided at predetermined intervals in the circumferential direction, and a predetermined gap can be created between the clamp plate provided with the protrusion that fits into the grooves and the tip of the cutter drive shaft. The clamp plate is arranged between the flange and the tip of the blade drive shaft so that the clamp plate can slide in the radial direction of the blade drive shaft and move in the axial direction of the blade drive shaft, and each clamp A guide tool for guiding the blade in the radial direction of the blade drive shaft is attached to the tip of the blade drive shaft, and the sleeve protrudes forward of the blade drive shaft so that the collar portion fixed to the tip of the sleeve is separated from the clamp plate. In this case, the radially outer end portion of the clamp plate is smaller than the cutter fitting portion of the cutter drive shaft so that the collar portion comes into contact with the clamp plate while the spacing ring and the cutter are removed from the cutter drive shaft. When the sleeve moves backward toward the rear of the cutter drive shaft, the clamp plate whose radially outer end extends beyond the cutter fitting portion of the cutter drive shaft is attached to the cutter or the cutter via the spacing ring or the cutter. A cutter attaching/detaching device for a side trimmer, characterized in that the clamp plate is engaged with the guide tool so as to press and fix the spacing ring against the cutter holder.