WO2001066292A1

WO2001066292A1 - Cutter pressingly fixing device and slitter

Info

Publication number: WO2001066292A1
Application number: PCT/JP2001/001613
Authority: WO
Inventors: Minoru Yoshida
Original assignee: Kabushiki Kaisha Yoshida Shokai
Priority date: 2000-03-09
Filing date: 2001-03-01
Publication date: 2001-09-13
Also published as: JP2001252821A

Abstract

A cutter pressingly fixing device for fixing a cutter of a slitter capable of simplifying a structure, eliminating the need for increasing the number of parts, and reducing the time for replacement of distance holding materials when the position of the cutter or a clearance between the upper and lower cutters is changed, wherein main body fixing mechanisms (2) to (13) for fixing a main body (1) to a rotating shaft (42) and cutter pressing mechanisms (16) to (30) for pressing the distance holding materials and cutters fitted to the rotating shaft (42) with a uniform force are provided on the main body (1) fitted to the rotating shaft (42) of the slitter, and a structure for installing the cutter of the slitter is not provided on the main body (1).

Description

Memorandum

Tool pressure fixing device and slipper

The present invention provides a slit for cutting a wide strip into a plurality of narrow strips, a slit also called a trimmer for cutting ears on both sides of the strip, and a slit. The present invention relates to an apparatus for fixing a desired position. Background art

First conventional example (Fig. 10 and Japanese Patent Publication No. 61-13992, U.S. Pat. No. 4,781,095)

In the slit, as shown in FIG. 10, two rotating shafts 42 are bridged between the left and right side plates 41 and bearings, and both rotating shafts 42 are vertically arranged in parallel.

Each of the upper and lower rotating shafts 4 2 has a large diameter retaining portion 45 and a small diameter threaded portion 46 at both ends, and a tool fixing portion 4 7 is provided between the retaining portion 45 and the threaded portion 46. I have to. The blade fixing portions 47 of the rotating shafts 42 include a plurality of annular or cylindrical spacing members 48, a plurality of annular thin plate-shaped gap adjusting materials 49, and a plurality of annular plate-shaped members, respectively. The cutting tool 50 and a single annular pressing device 91 are fitted in a predetermined order, and a nut 92 is screwed into the screw portion 46.

The upper and lower pressing devices 91 respectively screw a screw shaft exposed on the outer peripheral surface thereof, and press the adjacent spacing member 48 with a uniform force by a number of pressing pistons protruding from the front side thereof. Tighten the spacing member 48 between the retaining part 45 of the rotating shaft 42 and the nut 92 and the gap adjusting material 49, the blade 50 and the pressing device 91, and set each blade 50 to the desired position. It is fixed.

The lower end of each cutting tool 50 fixed to the upper rotating shaft 42 and the upper end of each cutting tool 50 fixed to the lower rotating shaft 42 are adjacent to the left and right, respectively, and between them Is provided.

When the rotating shafts 42 are rotated in opposite directions, a wide band-shaped steel plate is passed between the blade 50 of the upper rotating shaft 42 and the blade 50 of the lower rotating shaft 42. Narrow band Are cut at the same time.

As disclosed in Japanese Patent Publication No. 61-13992 or U.S. Pat.No. 4,780,095, a number of pressing devices 91 are provided on the front side of an annular body. A piston hole is provided, and a pressing piston is fitted into each piston hole, and the leading end of each pressing piston projects from the side surface of the main body.

In the body, an oil passage communicating with the bottom of each piston hole and a pressurizing chamber having a leading end communicating with the oil passage are provided, and a pressurizing piston is fitted into the pressurizing chamber. Oil is filled in the bottom of each piston hole, oil passage and pressurizing chamber. A screw hole communicating with the base end of the pressurizing chamber is provided on the outer peripheral surface of the main body, a screw shaft is screwed into the screw hole, and the tip of the screw shaft contacts the pressurizing piston of the pressurizing chamber.

When the screw shaft is screwed in and the pressurizing piston is pushed into the front end side of the pressurizing chamber, the oil is pressurized and each pressing piston is pushed out with a uniform force larger than the pushing force of the pressurizing piston. When changing the cutting width, plate thickness, or material of the band-shaped plate during slitting, replace the spacing material and the gap adjusting material to change the position of the upper and lower rotary shaft blades and the gap between the upper and lower blades.

In this case, the upper rotary shaft that can move up and down is raised, and the blades of the upper rotary shaft are separated from the blades of the lower rotary shaft. The left and right movable side plates on the screw side of the rotary shaft are moved outward, and the upper and lower bearings attached to the movable side plate are respectively removed from the upper and lower screw shaft side bearing portions of the rotary shaft. The pressing devices fitted to the upper and lower rotating shafts respectively unscrew the screw shafts exposed on the outer peripheral surfaces. The nuts screwed into the threaded portions of both rotating shafts are respectively unscrewed and removed. Remove the spacing material, the gap adjusting material, the blade, and the pressing device fitted to the blade fixing parts of both rotating shafts, respectively.

On the other hand, the required number of spacing materials and gap adjusting materials with dimensions according to the cutting width, thickness, and material of the strip-shaped plate will be prepared. A newly prepared spacing material and gap adjusting material, and a cutting tool and a pressing device are fitted in a predetermined order on each of the rotating shafts, and a nut is screwed into a thread portion, and an outer peripheral surface of the pressing device is provided. Screw the exposed screw shaft.

The movable side plate on the screw side of the rotating shaft moves inward, and the upper and lower bearings of the movable side plate are inserted into the screw side bearings of the upper and lower rotating shafts, respectively. The upper rotating shaft is lowered, and a desired position is set between the lower end of each blade of the upper rotating shaft and the upper end of each blade of the lower rotating shaft. Adjacent with a gap.

However, when changing the position of the blade on the rotating shaft and the gap between the upper and lower blades, it takes a lot of time to attach and detach the many spacing members, the gap adjusting material and the blade, and the pressing device and the nut. A large force is required to rotate the nut because the nut is in contact with the adjacent spacer and a frictional force acts on the spacer.

In recent years, the production of small lots of various types has been increasing, and the frequency of changing the cutting width, thickness and material of the strip has been changing frequently.

Second conventional example (Japanese Unexamined Patent Publication No. Hei 11-199713, International Publication WO89 / 072026)

This is a tool fixing device for fixing a tool at a desired position on a rotating shaft without using a spacing member, a gap adjusting material and a nut in the first conventional example in a slit.

In this blade fixing device, a ring-shaped main body fitted to a slit shaft is provided with a main body fixing mechanism for fixing the main body to the rotation shaft. The main body fixing mechanism is a mechanism for reducing the inner diameter of the main body. A cylindrical pressure chamber is provided concentrically along the inner peripheral surface of the main body, and a pressure chamber having a leading end communicating with the pressure chamber is provided. A pressurizing piston is fitted in the pressurizing chamber. The pressure chamber and pressurization chamber are filled with oil. A screw hole communicating with the base end of the pressurizing chamber is provided on the outer peripheral surface of the main body, a screw shaft is screwed into the screw hole, and the tip of the screw shaft contacts the pressurizing piston of the pressurizing chamber.

When the screw shaft is screwed in and the pressurizing piston is pushed into the distal end of the pressurizing chamber, the pressure in the pressure chamber increases, and the thin wall between the inner peripheral surface of the pressure chamber and the inner peripheral surface of the main body is inward. It bends and the inside diameter of the main unit decreases.

The main body is provided with a small diameter portion having a small outer diameter and a large diameter portion having a large outer diameter. The ring-shaped blade is fitted on the small diameter portion of the main body and overlaps the end face of the large diameter portion of the main body. The pressing device of the first conventional example is fitted and attached to the small diameter portion of the main body. The pressing device is screwed with a screw shaft exposed on the outer peripheral surface, presses the blade with uniform pressing force with a plurality of pressing pistons protruding from the front surface, and fixes the blade to the end surface of the large diameter part of the main body. I have.

A plurality of blade fixing devices are fitted to the upper and lower rotating shafts of the slit. Each blade fixing device is placed at a desired position on the rotating shaft, and its inner diameter is reduced. Fix to the rotating shaft, and fix the blade at a desired position on the rotating shaft.

When using a blade fixing device for slitting, the blade fixing device has a mechanism that fixes the blade to its main body with a pressing device and has a mechanism for fixing the main body to the rotating shaft of the slitter. There is no need to attach and remove the spacers and nuts as in the example.

However, in spite of its complicated structure and high cost, the number of blade fixing devices required is the same as the number of blades required for both upper and lower rotating shafts. Many expensive knife fixing devices are required.

Also, when a plurality of blade fixing devices are fitted and arranged on the rotating shaft of the slit, the distance between adjacent blade fixing devices cannot be narrower than the axial length of the blade fixing device. The strip cannot be cut to a width smaller than the axial length of the device. If the length of the blade fixing device in the axial direction is shortened in order to reduce the width of the strip-shaped plate that can be cut, it becomes difficult for the blade fixing device to be held concentrically with the rotation axis of the slipper, and the blade of the blade fixing device is slipped. As a result, the belt-shaped plate is meandered and cut. Disclosure of the invention

[Eyes]

The present inventor has focused on configuring a blade pressing and fixing device by incorporating the main body fixing mechanism of the blade fixing device in the second conventional example into the pressing device in the first conventional example. This blade pressing and fixing device is fixed to the rotating shaft of the slit by its main body fixing mechanism, and the blade pressing mechanism uniformly presses the blade sandwiched between the spacing members to hold it in the radial direction of the rotary shaft of the slitter. .

By doing so, unlike the first conventional example, the space holding member and the nut between the blade pressing and fixing device and the nut are not required, and the trouble of attaching and detaching the space holding member and the nut is saved. I will When changing the position of the blade on the rotating shaft and the clearance between the upper and lower blades, the time required to replace the spacing material and the clearance adjusting material is reduced. Production efficiency does not decrease significantly even in the production of many types and small quantities.

Also, unlike in the second conventional example, a spacing material having a short axial length is used. The distance between the blades can be reduced by using this method. The blade can be held in the radial direction of the slit shaft, and the strip can be cut to a narrow width. The cutting line of the band-shaped plate does not meander but is straight.

Also, unlike the blade fixing device of the second conventional example, such a blade pressing and fixing device does not have a structure for attaching a blade, and therefore has a simple structure and is not expensive. In addition, only two blade pressing and fixing devices are required, one for the upper and lower rotating shafts of the slit. There is no need for multiple blade pressing and fixing devices.

Existing slits have small-diameter screw teeth at one end of the upper and lower rotating shafts for screwing nuts together, but when using the tool for pressing and fixing the above-mentioned tools, the screw teeth are not required together with the nut. become. Unlike the blade fixing part of the rotary shaft, the screw part of the rotary shaft has a screw tooth and a small diameter, so that the blade pressing and fixing device cannot be fixed by the main body fixing mechanism. As a result, it is not possible to dispose the blade near the threaded portion of the blade fixing portion of the rotary shaft. The range in which the blades can be arranged is reduced.

Therefore, the small-diameter threaded part of the rotating shaft is screwed and fixed to the outside diameter enlarged cylinder whose center hole is a screw hole, and the blade is fixed to the outside diameter enlarged cylinder having the same outer diameter as the blade fixed part of the rotating shaft. The pressure fixing device can be fixed by its main body fixing mechanism.

[Summary of the Invention]

1) Has a main body that fits on the slit shaft

The main body is provided with a main body fixing mechanism that fixes the main body to the slit shaft, and a blade pressing mechanism that presses the spacing material fitted with the slit shaft and the blade with an equal force. A blade pressure fixing device characterized by not providing a configuration for mounting an evening blade.

The above-mentioned main body fixing mechanism is a mechanism in which, for example, when a fixing screw shaft is screwed in, the inner diameter of the main body is reduced and the main body is fixed to the rotating shaft of the slipper.

The above-described blade pressing mechanism is a mechanism in which, for example, when a pressing screw shaft is screwed, the pressing piston presses the spacing member / the blade with a uniform force larger than the screwing force of the pressing screw shaft.

2) Each of the vertically arranged rotating shafts is provided with a retaining part at one end side, and a plurality of blades are fitted to each of the upper and lower rotating shafts and fixed at the desired positions, and both rotating shafts are opposed. In the direction of rotation, passing the band between the blade of the upper rotating shaft and the blade of the lower rotating shaft, and cutting the band into a plurality of bands.

The spacing retainer, the blade and the above-mentioned blade pressing and fixing device are fitted to both rotating shafts, and the blade pressing and fixing device is fixed to the rotating shaft by its main body fixing mechanism, and the blade pressing and fixing device of the blade pressing and fixing device is used. Press the spacing material and the blade, tighten the spacing material between the retaining part of the rotating shaft and the blade pressing and fixing device, and position each blade between the retaining portion of the rotating shaft and the blade pressing and fixing device at the desired position. It is characterized by being fixed to.

3) The upper and lower rotating shafts are provided with a large-diameter retaining portion and a small-diameter threaded portion at one end and the other end of the blade fixing portion, respectively. A plurality of blades are fitted and fixed at a desired position, both rotating shafts are rotated in opposite directions, and a belt-shaped plate is passed between a blade of an upper rotating shaft and a blade of a lower rotating shaft. Is cut into a plurality of strips,

Both rotating shafts are screwed and fixed to the small-diameter screw teeth with the outer diameter-enlarged cylinder having the same outer diameter as the blade fixing part, and the above-mentioned blade pressing and fixing device is fixed to the main body of the outer diameter enlarged cylinder. It can be fixed by a mechanism.

[The invention's effect]

Since the blade pressing and fixing device does not have a configuration for mounting a slit blade, the structure is simple and the cost is not high. In addition, when used in slits, it is only necessary to use one for the upper and lower rotation axes of the slit. Does not require a large number.

When the blade pressing and fixing device is used for slitting, the space holding material and the nut between the blade pressing and fixing device and the nut are not necessary for the upper and lower rotating shafts, and the space holding material and the nut are attached and detached. Time is saved. When changing the position of the blade on the rotating shaft and the gap between the upper and lower blades, the time required to replace the spacers is reduced. Production efficiency does not decrease significantly even in the production of many types and small quantities.

In addition, in each of the upper and lower rotating shafts, the spacing between the blades can be reduced by using a spacing member having a short length in the axial direction. While holding the blade in the radial direction of the rotating shaft, the band-shaped plate can be cut into a narrow width. The cutting line does not meander, but becomes a straight line. At the end of the rotating shaft, there is a small-diameter threaded part for screwing the nut, and in the slit, a small-diameter threaded part is fixed by screwing an outer diameter-enlarged cylinder with the same outer diameter as the tool fixing part. Place In this case, the blade pressing and fixing device can be fixed to the outer diameter enlarged cylinder by its main body fixing mechanism, and the blade can be arranged near the threaded portion of the blade fixing portion of the rotating shaft. The range in which the blade can be placed does not become narrow. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a half sectional side view of a blade pressing and fixing device according to a first example of an embodiment of the present invention. Fig. 2 is a right side view of a section taken along line A-A in Fig. 1.

Fig. 3 is a front view of the right side portion of the blade pressing and fixing device.

Fig. 4 is a front view of a left side portion of the blade pressing and fixing device.

FIG. 5 is a schematic longitudinal sectional front view of a slit in a first example using the blade pressing and fixing device of the first example.

FIG. 6 is a half sectional side view of a screw shaft portion of a rotary shaft of a slipper in a second example using the blade pressing and fixing device of the first example.

Fig. 7 is a right side view of a section taken along line BB of Fig. 6.

FIG. 8 is a half sectional side view of a blade pressing and fixing device in a third example.

FIG. 9 is a front view of the left side portion of the blade pressing and fixing device.

FIG. 10 is a longitudinal front view of a middle part of a slit using a conventional pressing device. BEST MODE FOR CARRYING OUT THE INVENTION

[First example (see Fig. 1 to Fig. 5)]

The blade pressing and fixing device of the present example is provided with an annular main body 1 that is fitted to the slip shaft 42. The main body 1 is provided with main body fixing mechanisms 2 to 13 for reducing the inner diameter of the main body 1 and fixing the main body 1 to the rotating shaft 42. The main body 1 is provided with a blade pressing mechanism 16 to 30 for uniformly pressing the circular plate-shaped blade 50 fitted to the rotating shaft 42 and holding the blade 50 in the radial direction of the rotating shaft 42. The structure for mounting the blade 50 is not provided on the main body 1.

As shown in FIGS. 1 and 2, the main body fixing mechanisms 2 to 13 form a cylindrical pressure chamber 2 concentrically along the inner peripheral surface of the main body 1, and when the pressure of the pressure chamber 2 increases, the main body The thin portion between the inner peripheral surface of the pressure chamber 1 and the inner peripheral surface of the pressure chamber 2 is elastically deformed and curved inward, so that the inner diameter of the main body 1 is reduced. The main body 1 is provided with pressurizing mechanisms 3 to 10 for increasing and decreasing the pressure in the pressure chamber 2. As shown in FIG. 2, the pressurizing mechanisms 3 to 10 are provided with holes having a circular cross-section opening on the outer peripheral surface of the main body 1, and a bottom portion of the hole is formed in the pressurizing chamber 3, and an opening side of the hole is formed. The portion is formed as a screw hole 4, and the bottom of the pressurizing chamber 3 communicates with the pressure chamber 2 through a passage 5. A pressurizing piston 6 is fitted into the pressurizing chamber 3, and oil is filled in the pressure chamber 2, the bottom portion of the pressurizing chamber 3, and the passage 5. A screw shaft 7 is screwed into the screw hole 4, a small-diameter distal end of the screw shaft 7 is brought into contact with the base end of the pressurizing piston 6, and a hexagonal hole 8 is provided at the base end of the screw shaft 7. At the opening position of the screw hole 4, a retaining piece 9 to which the base end of the screw shaft 7 with the hexagonal hole 8 is fixed by a port 10.

Between the outer peripheral surface of the main body 1 and the pressure chamber 2, there are provided air vent mechanisms 11 to 13 for expelling air in the pressure chamber 2 and the like when filling the pressure chamber 2 and the like with oil. The air bleeding mechanism 11 to 13 has an air bleeding hole 11 with a circular cross section between the outer peripheral surface of the main body 1 and the outer peripheral surface of the pressure chamber 2, and the narrow diameter of the air bleeding hole 11 on the pressure chamber 2 side. A piston 12 is fitted to the portion, and two hexagon socket screws 13 are screwed into a threaded portion on the outer peripheral surface side of the main body 1 of the air vent hole 11.

Insert the tip of a rotating tool such as a torque wrench into the hexagonal hole 8 of the fixing screw shaft 7 exposed on the outer peripheral surface of the main body 1 and screw the fixing screw shaft 7 by rotating the rotating tool to fix the screw. When the pressurizing piston 6 is pushed into the bottom of the pressurizing chamber 3 by the advancement of the shaft 7, the inner pressure of the main body 1 is reduced due to an increase in the pressure of the pressurizing chamber 2, and the main body 1 fitted to the rotating shaft 42 is moved. It is concentrically fixed to the rotating shaft 42.

When the fixing screw shaft 7 is unscrewed, the pressurizing piston 6 returns by retreating the fixing screw shaft 7, and the pressure in the pressure chamber 2 etc. decreases, and the thin portion inside the pressure chamber 2 of the main body 1 is elastic. Then, the inner diameter of the main body 1 is enlarged, and the fixing between the main body 1 and the rotating shaft 42 is released. As shown in Fig. 1, Fig. 3 and Fig. 4, the blade pressing mechanism 16 to 30 is provided with a number of circular cross-section piston holes 16 opened on the front side of the main body 1 at equal intervals in the axial direction. It is provided along. A pressing piston 17 is fitted in each piston hole 16. On the front side surface of the main body 1, a ring-shaped lid plate 18 is overlapped and fixed with a large number of ports 19. The front end of the small-diameter rod of each pressing piston 17 penetrates the rod hole 20 penetrating the cover plate 18 and projects to the front side of the cover plate 18.

Each piston hole 16 is divided into a front chamber and a rear chamber by a pressing piston 17 respectively. ing. A plurality of disc springs 21 are inserted into the front chambers of the respective piston holes 16. The disc spring 21 is used for retracting the pressing piston. Is.

The main body 1 is provided with pushing mechanisms 22 to 30 for advancing the respective pressing pistons 17 with a uniform large force.

As shown in FIGS. 3 and 4, the push-out mechanisms 22 to 30 have the main body 1 having an annular oil passage 22 communicating with the bottom of the rear chamber of each piston hole 16.

As shown in FIG. 4, the extruding mechanisms 22 to 30 are, like the pressing mechanisms 3 to 10 of the main body fixing mechanisms 2 to 13, holes having a circular cross section opened on the outer peripheral surface of the main body 1. The bottom portion of the hole is formed in the pressurizing chamber 23, the open side portion of the hole is formed in the screw hole 24, and the bottom of the pressurizing chamber 23 is connected to the oil passage 22 through the passage 25. Communicating. A pressurizing piston 26 is fitted in the pressurizing chamber 23, and oil is filled in the rear chamber of each piston hole 16, oil passages 22 and passages 25, and the bottom part of the pressurizing chamber 23. are doing. A screw shaft 27 is screwed into the screw hole 24, a small-diameter distal end of the screw shaft 27 is applied to the base end of the pressurizing piston 26, and a hexagonal hole 28 is formed in the base end of the screw shaft 27. Provided. At the opening position of the screw hole 24, a retaining piece 29 to which the base end of the screw shaft 27 with the hexagonal hole 28 comes into contact is fixed with a port 30.

The total cross-sectional area of all the piston holes 16 is set to be at least ten times the cross-sectional area of the pressurizing chamber 23, and the pushing force of the pressing piston 17 is reduced by the forward force of the screw shaft 27 and the pressing piston 26. A hydraulic pressure booster circuit that makes it 10 times or more is configured.

Insert the tip of a rotary tool such as a torque wrench into the hexagonal hole 28 of the pressing screw shaft 27 exposed on the outer peripheral surface of the main body 1, and screw the pressing screw shaft 27 with the rotation of the rotating tool to press. When the pressurizing piston 26 is pushed toward the bottom of the pressurizing chamber 23 by advancing the screw shaft 27, each pressing piston 17 moves forward with a uniform large force.

When the pressing screw shaft 27 is unscrewed, the pressure in the rear chamber of each piston hole 16 decreases, and each pressing piston 17 retreats by the elastic force of the disc spring 21.

In the slit of the present example, as shown in FIG. 5, two rotating shafts 42 are bridged between left and right side plates 41 and bearings, and both rotating shafts 42 are vertically arranged in parallel. The upper rotating shaft 42 can move up and down together with the left and right bearings 44 to which the bearings 43 are fitted. Right The side plate 41 can move left and right together with the upper and lower bearings 44 attached to the side plate 41. The upper and lower rotating shafts 42 have their left ends connected to a motor (not shown), and can be driven to rotate in opposite directions. Each of the two rotating shafts 42 has a large-diameter retaining portion 45 inside the left-end bearing portion 43 and a small-diameter thread portion 46 inside the right-end bearing portion 43. A portion between 5 and the screw portion 46 is a blade fixing portion 47 having a smaller diameter than the retaining portion 45 and a larger diameter than the screw portion 46.

Each of the two rotating shafts 42 is provided with a plurality of annular or cylindrical spacing members 48, a plurality of annular thin plate-shaped gap adjusting materials 49, and a plurality of annular plate-shaped blades at the blade fixing portion 47. 50 and the single blade pressing and fixing device 1 to 13 and 16 to 30 of this example are fitted in a predetermined order.

The upper and lower double blade pressing and fixing devices 1 to 13 and 16 to 30 respectively screw the fixing screw shaft 7 exposed on the outer peripheral surface of the main body 1 with a rotating tool to reduce the inner diameter of the main body 1, The main body 1 is concentrically fixed to the blade fixing portion 47 of the rotary shaft 42. Further, the double-blade tool pressing and fixing devices 1 to 13 and 16 to 30 respectively screw the pressing screw shaft 27 exposed on the outer peripheral surface of the main body 1 with a rotary tool, and advance each pressing piston 17. Then, each pressing piston 17 presses the adjacent spacing member 48 with an even large force.

On both rotating shafts 42, the spacing member 48 between the retaining portion 45 and the blade pressing and fixing device 1-1-3, 16--30, the gap adjusting material 49 and the blade 50 are tightened, respectively. Each blade 50 is fixed at a desired position. A nut is not screwed into the thread part 46. No spacing member 48 or the like is arranged between the screw tooth portion 46 and the blade pressing and fixing devices 1 to 13 and 16 to 30.

When both rotating shafts 42 are rotated in the opposite direction, a wide band-shaped steel plate is passed between the blade 50 of the upper rotating shaft 42 and the blade 50 of the lower rotating shaft 42. It is simultaneously cut into narrow strip-shaped steel sheets.

[Second example (See Fig. 6 and Fig. 7)]

The slit of this example is the same as the slits 41 to 47 of the first example, The blade pressing and fixing devices 1 to 13 and 16 to 30 of the first example can be fixed to the screw teeth portion 46 by the main body fixing mechanisms 2 to 13. The outer diameter expansion cylinders 61 to 64 were screwed and fixed to the screw teeth 46.

As shown in FIG. 6 and FIG. 7, the outer diameter expansion cylinders 61 to 64 are configured such that the center hole of the cylindrical body 61 is formed into a screw hole that is screwed into the thread part 46 of the rotating shaft 42, and the cylindrical body is formed. 6 The outer diameter of 1 is the same as the diameter of the tool fixing part 47 of the rotating shaft 42.

A fixing mechanism for fixing the cylindrical body 61 is provided. In this fixing mechanism, a plurality of screw holes 62 are radially penetrated at equal intervals at the right end of the cylindrical body 61, and a screw 63 with a hexagonal hole is screwed into each screw hole 62. Each screw 63 is screwed in, and a soft plate fixed to the tip of each screw 63 is pressed against the screw tooth portion 46 to fix the cylindrical body 61. Further, a rotation mechanism for rotating the cylindrical body 61 is provided. In this rotation mechanism, a plurality of concave portions 64 are provided on the right end face of the cylindrical body 61 at equal intervals. A rotating tool such as a wrench is hooked on the concave portion 64 to rotate the cylindrical body 61.

In the slipper of this example, the outer diameter expansion cylinders 61 to 64 are screwed and fixed to the screw teeth 46 of the upper and lower rotating shafts 42, respectively. .

The knife pressing and fixing devices 1 to 13 and 16 to 30 of the first example are fixed to the outer diameter enlarged cylinders 6 1 to 6 4 of the both rotating shafts 42 by the main body fixing mechanisms 2 to 13 respectively. . Then, the blade 50 can be arranged near the screw portion 46 of the blade fixing portion 47. The disposable range of the blade 50 is wider than in the first example.

Other points are the same as in the first example.

[Third example (see Fig. 8 and Fig. 9)]

The blade pressing and fixing device of the present example is different from the blade pressing mechanism 16 to 30 of the blade pressing and fixing device of the first example in that a large number of circular cross-section pressing piston mechanisms 16 and 17 are replaced with a single annular shape. Are provided with the pressing piston mechanisms 72 and 73.

As shown in FIG. 8 and FIG. 9, the blade pressing mechanism 72 to 82 is provided with an annular main body 71 and an annular piston hole 72 opened on the front side thereof concentrically. An annular pressing piston 73 is fitted in the piston. On the outer peripheral portion of the front side of the main body 71, a ring-shaped lid plate 74 is superimposed and fixed with a large number of ports 75, and the outer peripheral surface of the outer diameter reduction portion of the pressing piston 73 is covered with the lid plate 71. 4 Contacting the inner peripheral surface of 4 and reducing the outer diameter of pressing piston 7 3 Has a front end projecting toward the front side of the cover plate 74. In the piston hole 72, a back coupling and a packing 76 are fitted at the rear side of the pressing piston 73.

The main body 71 is provided with an extruding mechanism 77 to 82 for advancing the pressing piston 73 with a large force. The extrusion mechanisms 77 to 82 are provided with holes having a circular cross-section opened on the outer peripheral surface of the main body 71, and pressurized on the bottom side of the holes, almost in the same manner as the extrusion mechanisms 22 to 30 in the first example. In addition to forming the chamber 77, the opening side of the hole is formed as a screw hole 78, and the bottom of the pressurizing chamber 77 communicates with the bottom of the piston hole 72 through a passage 79.

A pressurizing piston 80 is fitted in the pressurizing chamber 77, and oil is filled in the bottom portion of the piston hole 72, the passage 79 and the bottom portion of the pressurizing chamber 77. A screw shaft 81 is screwed into the screw hole 78, and a small-diameter distal end portion of the screw shaft 81 contacts the base end of the pressurizing piston 80. At the opening position of the screw hole 78, a retaining piece 82 to which the base end with a hexagonal hole of the screw shaft 81 contacts is fixed by a port.

When the pressing screw shaft 81 exposed on the outer peripheral surface of the main body 71 is screwed in, the pressing piston 73 moves forward with a large uniform force.

The main body fixing mechanism for fixing the main body 71 to the slit shaft 42 and other points are the same as those in the first example. Industrial applicability

The blade pressing and fixing device and the slitter of the present invention are used for cutting a strip-shaped metal plate such as a strip-shaped steel plate.

Claims

The scope of the claims

1 Has a body that fits into the slip shaft,

(2) The above-mentioned main body fixing mechanism is a mechanism in which, when a fixing screw shaft is screwed in, the inner diameter of the main body is reduced and the main body is fixed to the rotating shaft of the slipper. The knife pressing and fixing device as described in the above.

(3) The blade pressing mechanism described above is characterized in that when the pressing screw shaft is screwed in, the pressing piston presses the spacing material 保持 the blade etc. with a uniform force greater than the screwing force of the pressing screw shaft. 2. The blade pressing and fixing device according to claim 1, wherein

4 The main unit fixing mechanism described above is a mechanism in which when the fixing screw shaft is screwed in, the inner diameter of the main unit is reduced and the main unit is fixed to the rotating shaft of the slipper.

The blade pressing mechanism is characterized in that when the pressing screw shaft is screwed in, the pressing piston presses the spacing member / the blade with a uniform force larger than the screwing force of the pressing screw shaft. 2. The blade pressing and fixing device according to claim 1, wherein

5 Each of the vertically arranged rotating shafts is provided with a retaining part on one end side, and a plurality of blades are fitted to each of the upper and lower rotating shafts and fixed at desired positions, and both rotating shafts are oriented in opposite directions. In the slit to cut the strip into a plurality of strips by passing the strip between the blade of the upper rotating shaft and the blade of the lower rotating shaft,

Each of the rotating shafts is fitted with a spacing member, a blade, and the blade pressing and fixing device according to any one of claims 1 to 4, and the blade pressing and fixing device is rotated by its main body fixing mechanism. The spacing material and the blade with the blade pressing mechanism of the blade pressing and fixing device. It is characterized in that the spacing member between the retaining portion of the rotating shaft and the blade pressing and fixing device and the blade are tightened, and each blade between the retaining portion of the rotating shaft and the blade pressing and fixing device is fixed at a desired position. Slip evening. 6. The slipper according to claim 5, wherein the two rotating shafts do not have a spacing member disposed on the side opposite to the retaining portion side of the blade pressing and fixing device.

7 The rotating shafts arranged vertically are provided with a large-diameter retaining part and a small-diameter threaded part at one end and the other end of the blade fixing part, respectively. The two rotating shafts are rotated in opposite directions, and the belt is passed between the blade of the upper rotating shaft and the blade of the lower rotating shaft. In the slip to cut into multiple strips,

The two rotating shafts are respectively screwed and fixed to the small-diameter screw tooth portion with an outer diameter expanding cylinder having the same outer diameter as the blade fixing portion, and are attached to the outer diameter expanding cylinder, according to any one of claims 1 to 4. A slipper characterized in that the blade pressing and fixing device according to (1) can be fixed by its main body fixing mechanism.