JPH06106411A - Shearing machine - Google Patents

Abstract

PURPOSE:To continuously execute a number of cutting operations in an simple and rapid manner without measuring the cutting part for each cutting operation by providing an auxiliary handle capable of being clutched by hand when the lower part of a continuous thread stud which is already arranged in the upstream of an operator. CONSTITUTION:A shearing machine 1 is provided with a flange part 20 extending to the side, and the flange part is provided with a tapped hole 23 where a tapped part 35 of an auxiliary handle 30 can be screwed. The auxiliary handle where the tapped part is screwed in the tapped hole is suspended from a body part similarly to a portable handle 2. A tapped hole where a continuous thread stud piece Wa constituting the reference gauge of the cutting length can be screwed is provided in the flange part, and the continuous thread stud of 1/2'' diameter and the continuous thread stud of 3/8'' diameter can be screwed into the respective tapped holes.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shearing machine, and more particularly to a body portion having a fluid actuated cylinder device, a movable blade attached to a piston rod of the fluid actuated cylinder device, and a body. A shearing machine having a fixed blade attached to the part.

[0002]

2. Description of the Related Art A shearing machine used for cutting steel bars in construction work, construction equipment work, machine fabrication, machining, etc. is known. In this type of shearing machine, there is known a so-called full-thread cutter mainly configured to shear a long screw and a so-called full-thread bolt such as a hanging bolt by a pair of fixed blade and movable blade.

A full screw cutter is generally located at the rear end portion of the cutter and is gripped by the dominant hand, eg, the right hand or the main handle or portable handle, and the opposite hand, eg, the left hand, and the body portion of the cutter. And an auxiliary handle for intermediately supporting. A fixed blade is integrally supported on the jaw-shaped head portion of the main body portion that extends forward, and a movable blade is attached to the piston rod of the fluid-operated cylinder device that constitutes the main body portion. The fixed blade is formed with a semi-circular recess substantially complementary to the outer peripheral portion of all screw bolts,
An inner screw or a female screw corresponding to the outer screw or the male screw formed on the outer periphery of the all screw bolt is formed on the inner peripheral surface of the recess. During the cutting operation, the worker holds the portable handle with one hand, supports the auxiliary handle with the other hand, and inserts all screw bolts between the fixed blade and the movable blade. The cylinder device extends the piston rod and advances the movable blade, so that the movable blade and the fixed blade relatively come close to each other. The all-screw bolt is sheared in a direction perpendicular to the axis by the approach of the movable blade and the fixed blade, and cut at a desired portion.

Also, in this type of full-screw cutter,
The applicant has proposed a structure in which a fixed blade is divided into left and right fixed blade portions, and a movable blade is inserted into a groove portion formed between the fixed blade portions (Japanese Patent Application No. 4- Four
7181, Japanese Patent Application No. 4-80839).

[0005]

This type of full-screw cutter is a full-screw bolt that has already been installed in the upper area of the operator.
For example, it is often used to cut lower parts such as ceiling suspension bolts and bolts hanging from an upper horizontal runner. In such a cutting operation, the worker holds the portable handle extending downward and supports the rear end of the cutter. However, since the auxiliary handle is generally oriented at a right angle to the direction of the portable handle and extends laterally from the main body portion, the fingers holding the auxiliary handle should be installed on the light iron runner or duct on the ceiling already installed. It is difficult to hold the auxiliary handle as desired by interfering with the horizontal runner or the like.

Further, in the case where a large number of all-screw bolt pieces of the same length are cut from all the screw bolts or a plurality of all-screw bolts are cut at the same portion, the cut portion must be measured each time the cutting work is performed. Therefore, the cutting work is frequently interrupted, which complicates the work. The present invention has been made in view of such circumstances, and an object of the present invention is to firmly grip with a finger when cutting a lower portion of all screw bolts already arranged in an upper region of an operator. To provide a shears with an auxiliary handle to obtain.

It is another object of the present invention to provide a shearing machine which can easily and quickly continuously perform a large number of cutting operations without measuring the cutting site for each cutting operation.

[0008]

In order to achieve the above object, the present invention comprises a body portion having a fluid actuated cylinder device, a portable handle extending downward from the body portion, and the body portion. A shearing machine having an auxiliary handle arranged in front of the portable handle for intermediate support, a movable blade attached to a piston rod of the cylinder device, and a fixed blade attached to the body portion, A shears is provided in which an auxiliary handle is attached so as to extend downward from the main body portion.

According to the shearing machine having the above structure, since the auxiliary handle is attached so as to extend downward like the portable handle, the auxiliary handle is cut when cutting the lower portion of all the screw bolts already disposed in the upper region. There is no interference between the fingers gripping the hand and the light iron runners on the ceiling, ducts, or the horizontal runner already installed. Therefore, the operator can firmly hold the auxiliary handle with one hand from below.

In a preferred embodiment of the present invention, a mounting means for mounting the auxiliary handle is provided on the jaw-shaped head portion of the main body portion, and the mounting means comprises a male screw portion provided on the auxiliary handle. It consists of screw holes that can be screwed in. In a further preferred embodiment of the present invention,
The male screw portion of the auxiliary handle is longer than the required screwing depth of the screw hole of the jaw-shaped head portion. Accordingly, the support plate of the fixing jig for positioning the shears at a predetermined position on the work surface can be inserted between the tip end surface of the auxiliary handle and the side surface of the jaw type head portion.

In order to achieve the above object, the present invention also provides:
It has a body portion having a fluid actuated cylinder device, a movable blade attached to the piston rod of the cylinder device, and a fixed blade attached to the body portion, and the fixed blade is the outer periphery of the steel bar to be cut. In a shearing machine having a recessed portion having a substantially complementary shape, and an inner thread corresponding to the outer thread of the steel bar formed on the inner peripheral surface of the recessed portion, the main body portion is cut into a predetermined length. A shearing machine is provided, in which a threaded hole capable of screwing a cut piece of the steel bar substantially parallel to a steel bar to be cut is provided.

According to the above configuration of the present invention, a cut piece of steel bar cut into a predetermined length is screwed into a screw hole as a reference gauge for the cutting length, and the steel bar having the reference length is used a plurality of times as a guide. The cutting operation can be performed continuously without interruption for measurement. Preferably, the screw hole comprises a plurality of screw holes having a diameter corresponding to the diameter of the steel bar that can be cut,
As a result, for example, a 1/2 inch diameter full screw bolt piece is screwed into the first screw hole, and this is used as a reference for the cutting length of the same diameter full screw bolt, and a 3/8 inch diameter full screw bolt piece is used as the second screw hole. It can be screwed into a hole and used as a reference for the cut length of all threaded bolts of the same diameter. More preferably,
The screw hole is arranged in the jaw-shaped head portion of the main body portion and penetrates the jaw-shaped head portion. According to this structure, the cutting piece forming the reference gauge can be screwed into any side of the main body portion.

[0013]

The preferred embodiments of the shearing machine according to the present invention will be described in detail below with reference to the accompanying drawings. Figure 1
6 to 6 are a front view, a plan view, a rear view, a bottom view, a left side view and a right side view of the shears according to the embodiment of the present invention.

The illustrated shearing machine 1 is mainly configured as a so-called portable full-screw cutter for cutting full-screw bolts. As shown in FIG. 1, the shearing machine 1 includes a portable handle 2, an electric motor 3 supported by the portable handle 2, a pump unit 4 connected to the electric motor 3, and a hydraulic operating mechanism together with the pump unit 4. Hydraulic cylinder part 5
And a jaw-shaped head portion 6 extending forward from the hydraulic cylinder portion 5
It is composed of and.

The portable handle 2 extends downward from the electric motor 3 and is designed to have a size that allows an operator to hold it with a dominant hand, for example, the fingers of the right hand. A trigger switch 7 for manually controlling the operation of the electric motor 3 is provided on the front side surface of the portable handle 2. The electric motor 3 of this example is composed of a general AC commutator motor,
An output shaft (not shown) extending into the pump unit 4 is provided. However, the electric motor 3 may be configured by a rechargeable DC motor. The output shaft of the electric motor 3 drives a hydraulic pump (not shown) provided in the pump unit 4,
The pump unit 4 supplies pressure oil to the hydraulic cylinder unit 5.

The hydraulic cylinder portion 5 is provided with a piston / cylinder mechanism (not shown), and is configured to extend the piston rod 9 fixed to the piston with pressure oil. The structure of the drive mechanism of such a shearing machine is disclosed in JP-A-3-18.
The details are described in Japanese Patent Application No. 9022, Japanese Patent Application No. 4-80839, etc., and therefore, further detailed description will be omitted by citing these publications or applications.

The movable blade 10 is fixed to the tip of the piston rod 9, and the fixed blade 11 is attached to the jaw-shaped head portion 6 at the front end portion so as to face the movable blade 10.
0 and the fixed blade 11 are aligned along the axis of the piston rod 9. As shown in FIGS. 2 and 4, the movable blade 10 has an arcuate recess 12 capable of accommodating a part of the whole threaded bolt (shown in phantom in FIG. 1) such as a ceiling suspension bolt. Are formed.

A fixed blade 11 facing the movable blade 10 is attached to the front end portion of the jaw-shaped head portion 6, and the fixed blade 11 is provided.
Is a pair of left and right fixed blade portions 13, 1 as shown in FIG.
Equipped with 3. The fixed blade portions 13, 13 are spaced from each other by a predetermined distance, and a groove portion 14 extending in the lateral direction is formed between the fixed blade portions 13, 13. The groove portion 14 is positioned at a position that exactly faces the movable blade 10, and receives the movable blade 10 when the movable blade 10 moves forward. As shown in FIGS. 2 and 4, the fixed blade portions 13 and 13 are formed with semicircular recesses 15 capable of accommodating half of all screw bolts, and the inner peripheral surface of the recess 15 has an outer circumference of all screw bolts. A female screw is formed that is substantially complementary to the male screw formed on the. When the movable blade 10 advances due to the extension of the piston rod 9, the movable blade 10 and the fixed blade 11 house all the screw bolts in the recesses 12 and 15, and the all screw bolts are in the shearing direction, that is, at right angles to the axis line of the all screw bolts W. Cut in the direction.

The jaw-shaped head portion 6 extends forward from the lower end portion of the casing of the hydraulic cylinder portion 5. On the side of the jaw type head portion 6, a flange portion 20 extending in the longitudinal direction of the jaw type head portion 6 projects laterally from the jaw type head portion 6. As shown in FIGS. 2 and 4, screw holes 21, 22 and 23 formed as female threads on the inner peripheral surface penetrate the flange portion 20. The screw holes 21 are all screw bolts W with a diameter of 1/2 inch.
Has a diameter capable of being screwed in, and the screw hole 22 has a diameter capable of screwing a full-threaded bolt W having a diameter of 3/8 inch. The screw hole 23 has a diameter such that a male screw of an auxiliary handle (not shown) can be screwed in.

FIG. 7 is a plan view showing an auxiliary handle having a male screw capable of being screwed into the screw hole 23. The auxiliary handle 30 is held by the hand opposite to the dominant hand, for example, the finger of the left hand, and the grip 31 for intermediately supporting the shears 1.
The grip 32 is formed at the end of the grip portion 31, an extension portion 33 protruding from the collar 32 on the side opposite to the grip portion 31, and a screw portion 35 protruding from the tip surface 34. The screw portion 35 is a male screw that is screwed into the screw hole 23 of the flange portion 20.

8 and 9 are a front view and a left side view showing a usage state in which the auxiliary handle 30 is attached to the shears 1. When the screw portion 35 of the auxiliary handle 30 is screwed into the screw hole 23 of the flange portion 20, the auxiliary handle 30 extends substantially parallel to the portable handle 2 of the shears 1 and hangs from the flange portion 20. Further, the collar 32 of the auxiliary handle 30 is horizontally oriented. The fingers holding the grip 31 are restricted from moving upward by the collar 32, and
Can be firmly supported. Further, since the screw hole 23 penetrates the flange portion 20, the screw portion 35 is moved in the direction shown in FIG. 8 and FIG. 9 for irregular use or for a worker with a left-handed hand. It can be screwed into the screw hole 23 from the opposite direction.

As shown in FIG. 9, the screw portion 35 has a length that penetrates the flange portion 20 and slightly projects from the upper surface of the flange portion 20. That is, the length of the screw portion 35 is
It is set longer than the required screw-in depth of the screw hole 23. The screw portion 35 having such a length can be screwed with a fixing jig for fixing the shears 1 in place. Figure 10
[Fig. 4] is a left side view showing a state in which the shearing machine 1 is attached to a fixing jig using the auxiliary handle 30.

The fixing jig 40 is for cutting all the screw bolts in a state where the shearing machine 1 is positioned at a predetermined position, and is a horizontal substrate 41 placed on the floor of a work place or on a table. And a support plate 42 extending vertically from the upper surface of the substrate 41. The board 41 has bolt holes (not shown) for bolting the jig 40 to a work floor or the like. Further, the support plate 42 is provided with a through hole 43 through which the screw portion 35 of the auxiliary handle 30 can be inserted. The support plate 42 is inserted between the tip end surface 34 of the auxiliary handle 30 and the side surface of the flange portion 20, and the screw portion 35 of the auxiliary handle 30 is inserted into the flange portion 20 via the through hole 43 of the support plate 42. It is screwed into the screw hole 23. Thus, the flange portion 20 and the support plate 42 are integrally connected by the auxiliary handle 30, and the shears 1 are positioned by the jig 40 at a predetermined position on the floor surface or the tabletop surface.

Further, since the screw hole 23 penetrates the flange portion 20, the support plate 42 of the jig 40 can be arranged on an arbitrary side of the flange portion 20 as shown by an imaginary line in FIG. Screw holes 21 and 2 formed in the flange portion 20
2 is screwed with an all-screw bolt piece Wa having a reference length that has been cut in advance to a predetermined cut length. FIG. 8 shows a state in which a 3/8 inch diameter full-thread bolt piece Wa is screwed into the screw hole 22. A full screw bolt W having a diameter of 3/8 inch is inserted between the movable blade 10 and the fixed blade 10, and the tip surface of the full screw bolt W is aligned with the tip surface of the full screw bolt piece Wa. Since the all-thread bolt piece Wa having the reference length serves as a reference gauge for cutting the all-thread bolt W, a large number of all-thread bolts W are not required to be measured each time the cutting operation is performed, and a large number of all-thread bolts W are not cut. Can be easily and quickly cut, or a large number of all-thread bolt pieces having a predetermined length can be easily and quickly cut from all-thread bolts W.

As described above, the shearing machine 1 has the flange portion 20 extending laterally, and the flange portion 20 is provided with the screw hole 23 into which the screw portion 35 of the auxiliary handle 30 can be screwed. The auxiliary handle 30 having the screw portion 35 screwed into the screw hole 23 hangs downward from the flange portion 20 and extends substantially parallel to the portable handle 2. Therefore, when cutting the lower part of the hanging bolt arranged in the upper area of the worker, for example, the ceiling hanging bolt or the bolt hanging from the horizontal runner with the shearing machine 1, the auxiliary handle 20 is the jaw type head. It extends below the part 6. Thus, the fingers holding the auxiliary handle 20 support the shearing machine 1 below the shearing machine 1 without interfering with members located above the shearing machine 1, such as ceiling runners and ducts. , Worker, shearing machine 1
Can be firmly supported in the middle.

Further, since the auxiliary handle 30 can be selectively screwed to any side of the flange portion 20, the auxiliary handle 30 can be attached to a desired side depending on the use or the hand of the worker.
Can be installed. Further, the screw portion 35 of the auxiliary handle 30 has a length larger than the thickness of the flange portion 20, and the tip surface 34 of the auxiliary handle 30 and the flange portion 2 are provided.
The supporting plate 42 is inserted between the shearing machine 1 and the side surface of 0 to attach the shearing machine 1 to the jig 40 by using the auxiliary handle 30.
It can be positioned at a predetermined position on a work surface such as a floor surface or a tabletop surface.

The shearing machine 1 also has a screw hole 2 into which a full threaded bolt piece Wa constituting a reference gauge for cutting length can be screwed.
The flange portion 20 is provided with 1, 22. It is possible to screw the 1 / 2-inch diameter all-screw bolt piece Wa into the screw hole 21, and the 3 / 8-inch diameter all-screw bolt piece Wa.
Can be screwed into 2. According to this configuration, the full screw bolt W is inserted between the movable blade 10 and the fixed blade 10,
By aligning the tip surfaces of all the threaded bolts W with the tip surfaces of all the threaded bolt pieces Wa, it is possible to cut a plurality of all-threaded bolts W at desired cut portions without measuring the cut portions each time.

[0028]

According to the shearing machine having the above structure, the auxiliary handle is attached so as to extend downward from the main body portion, so that the lower portion of all the screw bolts already disposed in the upper region of the worker is cut. It is possible to provide a shearing machine with an auxiliary handle that can be firmly gripped with fingers.

Further, according to the above shearing machine, a steel bar cut piece having a predetermined length is provided with a screw hole capable of being screwed into the main body portion substantially parallel to the steel bar to be cut. As a result, it is possible to provide a shearing machine that can easily and quickly continuously perform a large number of cutting operations without having to measure the cutting site for each cutting operation.

[Brief description of drawings]

FIG. 1 is a front view of a shearing machine according to an embodiment of the present invention.

FIG. 2 is a plan view of the shears shown in FIG.

3 is a rear view of the shears shown in FIG. 1. FIG.

FIG. 4 is a bottom view of the shears shown in FIG. 1.

5 is a left side view of the shears shown in FIG. 1. FIG.

FIG. 6 is a right side view of the shears shown in FIG.

FIG. 7 is a plan view showing an auxiliary handle provided with a male screw capable of being screwed into a flange portion.

FIG. 8 is a front view showing a use state in which an auxiliary handle is attached to the shears.

FIG. 9 is a left side view showing a use state in which the auxiliary handle is attached to the shears.

FIG. 10 is a left side view showing a state in which the shears are attached to a fixing jig by using an auxiliary handle.

[Explanation of symbols]

 1 Shearing machine 2 Portable handle 3 Electric motor 4 Pump part 5 Hydraulic cylinder part 6 Jaw type head part 7 Trigger switch 9 Piston rod 10 Movable blade 11 Fixed blade 20 Flange part 21, 22, 23 Screw hole 30 Auxiliary handle 31 Grip part 32 Tsuba 33 Extension part 34 Tip surface 35 Screw part 40 Fixing jig W Full screw bolt Wa Full screw bolt piece

Claims (7)

[Claims] 1. A body portion having a fluid actuated cylinder device and a portable handle extending downwardly from the body portion.
A shear having an auxiliary handle arranged in front of the portable handle for intermediately supporting the body portion, a movable blade attached to a piston rod of the cylinder device, and a fixed blade attached to the body portion. In the machine, the auxiliary handle is attached so as to extend downward from the main body portion. 2. A body portion having a fluid actuated cylinder device, and a portable handle extending downwardly from the body portion.
An auxiliary handle disposed in front of the portable handle for intermediately supporting the main body portion, a movable blade attached to a piston rod of the cylinder device, and a fixed blade attached to the main body portion. In the shearing machine, wherein the fixed blade has a recessed portion having a shape substantially complementary to the outer circumference of the steel bar to be cut, and an inner thread corresponding to the outer thread of the steel bar is formed on the inner peripheral surface of the recessed portion. A handle is attached so as to extend downward from the body portion, and a screw hole capable of screwing a piece of the steel bar cut into a predetermined length substantially parallel to the steel bar to be cut is provided in the body portion. A shearing machine characterized by being drilled in. 3. An attachment means for attaching the auxiliary handle is provided on a jaw-shaped head portion of the main body portion, and the attachment means is a screw hole into which a male screw portion provided on the auxiliary handle can be screwed. The shearing machine according to claim 1 or 2 characterized by things. 4. The shearing machine according to claim 3, wherein the male screw portion of the auxiliary handle is longer than a required screw-in depth of a screw hole of the jaw-shaped head portion. 5. A main body portion having a fluid actuated cylinder device, a movable blade attached to a piston rod of the cylinder device, and a fixed blade attached to the main body portion, the fixed blade comprising: A shearing machine comprising a recess having a shape substantially complementary to the outer circumference of a cutting steel bar, and an inner thread corresponding to the outer thread of the steel bar formed on the inner peripheral surface of the recess, wherein the main body portion has a predetermined length. A shearing machine having a screw hole capable of screwing the cut piece of the steel bar cut into pieces into substantially parallel to the steel bar to be cut. 6. The shearing machine according to claim 2, wherein the screw hole is formed of a plurality of screw holes having a diameter corresponding to a diameter of a steel bar that can be cut. 7. The shearing machine according to claim 2, wherein the screw hole is arranged in a jaw-shaped head portion of a main body portion and penetrates the jaw-shaped head portion. .