JPH0426235Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a plate cutting machine used for cutting inorganic cured materials such as roof tiles.

[Background technology] Conventionally, when cutting board materials such as roof tiles, the eighth
A board cutting machine as shown in the figure is used. This cutting machine has a movable base 2 disposed above a fixed base 1 to which a fixed leg 10 is fixed at the bottom, and a movable base 2.
One end is pivoted to one end of a fixed base 1 with a first pin 11 so that it can move up and down, and a fixed blade 3 and a movable blade 4 are attached to the upper surface of the fixed base 1 and the lower surface of the movable base 2 to form a fixed blade. 3 and the movable blade 4 are made to correspond vertically, and the fixed base 1
The lower end of the swing link 6 is pivotably connected to the other end of the swing link 6, and the upper end of the swing link 6 is pivotally connected to the operating handle 5, and extends to the lower part of the base side of the operating handle 5. By pivoting the connecting portion 15 and the other end of the movable base 2 and holding the grip 22 of the operating handle 5 in your hand and moving it up and down, the first
It is designed to move up and down using a pin 11 as an axis, and has a fixed blade 3 on a fixed base 1 and a movable blade 4 on a movable base 2.
A plate material is inserted between the handle 5 and the handle 5 so that cutting can be performed by pressing the grip 22 of the operating handle 5.

However, since the conventional movable blade 4 had a straight, long cutting edge in the horizontal direction, it was difficult to cut the plate material.

[Purpose of the invention] The present invention has been made in view of the above points, and by forming the cutting edge of the movable blade into an arcuate shape,
It is an object of the present invention to provide a plate cutting machine that can easily cut plate materials.

[Disclosure of the invention] That is, the board cutting machine of the present invention has a movable base 2 disposed above a fixed base 1, one end of the movable base 2 is pivoted to one end of the fixed base 1, and an operating handle 5 is provided.
By operating the movable base 2, the movable base 2 is pivotally attached to the fixed base 1 so as to be movable up and down, and a concave groove 38 is formed on the lower surface of the movable base 2.
A protrusion 43 is formed at the bottom of the longitudinal center of the groove 38 and protrudes downward, so that the movable blade 4, which is formed long in the lateral direction, is recessed along the groove 38.
The upper end surface of the movable blade 4 is inserted into the protrusion 43.
At the same time, both ends of the movable blade 4 in the longitudinal direction are brought into pressure contact with the inner surface of a locking part 44 formed at both ends of the longitudinal direction of the recessed groove 38 so as to protrude downward. The fixed blade 3 provided on the top surface of the fixed base 1 is made to correspond vertically, and the cutting edge of the movable blade 4 is visually observed diagonally from above at multiple locations in the longitudinal direction of the groove 38 on at least one side wall in the width direction of the groove 38. It has a recessed notch 36 that allows
The above object is achieved by forming the cutting edge of the movable blade 4 into an arcuate shape.

The present invention will be described in detail below based on illustrated embodiments. First, to explain the overall structure of the sheet material cutting machine A, as shown in FIGS.
0 and 10 are provided, and a fixed blade 3 is attached to the upper surface of the fixed table 1 over its entire length. A pivot 16 is provided at one end of the fixed base 1, and a pivot 17 is attached to the pivot 16 with a nut 18.
A swing link fixing part 19 is provided at the other end of the fixed base 1, and a fixed shaft 20 is fixed to the swing link fixing part 19 with a nut 18. A swing link 6 is attached to the upper end of the
The lower end portion of is rotatably supported by a second pin 12. A horizontally long movable base 2 is disposed above the fixed base 1, and one end of the movable base 2 is connected to the pivot shaft 1.
It is pivotally attached to the upper end of 7 by a first pin 11 so as to be vertically movable. A movable blade 4 is attached to the lower surface of the movable base 2 over its entire length, and corresponds to the fixed blade 3 of the fixed base 1 above and below. The fixed blade 3 and the movable blade 4 protrude from the upper surface of the fixed base 1 and the lower surface of the movable base 2, respectively.
An operating handle 5 is provided on the upper side of the movable base 2, and a connecting portion 15 extending downward and a pivot portion 7 extending upward are provided on the base end side of the operating handle 5. , the connecting portion 15 connects the other end of the movable base 2 and the third
It is pivoted with a pin 13 so that it can move up and down. Furthermore, a through hole (not shown) is bored at the other end of the movable base 2, and the upper end of the swing link 6 passes through the through hole and is connected to the pivoting portion 7 of the operating handle 5. It is pivoted with 4 pins 14.

When the operating handle 5 is moved up and down by holding the grip 22 provided at the free end of the operating handle 5, the movable base 2 moves up and down about the first pin 11, and the fixed blade 3 and movable blade 4
By inserting a plate material between the blades 3 and 4, the plate material can be cut between the two blades 3 and 4. That is, when the operating handle 5 is lifted as shown in FIG. As it rotates upward, a gap is formed between it and the fixed base 1, and conversely, the grip 2 of the operating handle 5
2, the movable base 2 rotates downward, the gap between the movable blade 4 of the movable base 2 and the fixed blade 3 of the fixed base 1 becomes smaller, and the plate material is removed between the fixed blade 3 and the movable blade 4. It is now possible to cut Further, in this case, when the operating handle 5 is lifted up, the swinging link 6 is slightly tilted forward, and when the operating handle 5 is moved down, the swinging link 6 is tilted to the opposite side.

Next, to explain in detail the structure of the mounting part of the movable blade 4, as shown in FIGS. 1 to 4, the movable base 2
A pair of fixing parts 9, 9 are provided on the lower surface of the movable table 2 to protrude in the longitudinal direction, and a groove 38 is formed between the fixing parts 9, 9 over the entire length of the movable table 2. At both ends of the groove 38, locking parts 44, 44 are formed to protrude downward, and at the bottom of the groove 38, a protrusion 43 is curved so that the central part thereof protrudes slightly downward. It is formed. To attach the movable blade 4 to the lower surface of the movable base 2, use the concave groove 38 of the movable base 2.
A movable blade 4 formed of a slightly elastically deformable metal plate or the like is pushed into the groove 38 until the upper end surface of the movable blade 4 reaches the bottom surface of the groove 38. Here, the groove 38
The dimension between the inner surfaces of both the locking parts 44, 44 is the size of the movable blade 4.
When pushing the movable blade 4 into the groove 38, the movable blade 4 is curved in an arch shape, and both ends of the movable blade 4 are connected to the locking part 44.
It is made to come into elastic contact with the inner surface of the. In addition, the movable blade 4
In order to securely attach the blade to the movable table 2, as shown in FIG. It is also possible to make pressure contact with
Further, as shown in FIG. 2b and FIG. 5, screw holes 39 are drilled in the outer surface of one of the fixing parts 9 at both end positions of the fixing part 9, and fixing screws are screwed into the screw holes 39 of the fixing part 9. 40 may be made to penetrate into fixed holes 41 provided at both ends of the movable blade 4.

Further, as shown in FIG. 7a, a protrusion 43 may be provided on the bottom surface of the central part of the groove 38, which protrudes downward, and further, as shown in FIG. Projection part 4 whose length becomes longer
3 may be provided, and the movable blade 4 may be installed in the groove 38 so that the base of the movable blade 4 comes into contact with the bottom surface of each protrusion 43. Furthermore, as shown in FIG. 7c, the adjustment screw 4 is
5 may be screwed into the groove 38, and by changing the protruding dimension of the adjustment screw 45, the bowed shape of the movable blade 4 may be freely adjusted.

Note that when the operation handle 5 is held with the right hand, a plurality of notches 36 are provided in the fixed part 9 on the left side of the movable base 2 along the movable blade 4. The cutting edge of the movable blade 4 can be seen diagonally from above, and the cutting edge of the movable blade 4 can be easily aligned with the alignment mark on the plate material. In addition, a plurality of holding ribs 8, 8, ... are provided at the lower part of the right side of the fixed base 1 to protrude laterally along the fixed blade 3, and correspond to the holding ribs 8 of the fixed base 1 at the top and bottom. A plurality of holding ribs 8 are also protruded from the lower side of the movable table 2 at certain positions. For example, when cutting a board by holding it with the left hand, holding ribs 8, 8 are provided on the front and back surfaces of the right end of the board. Even after the plate material is cut by the double blades 3 and 4, the plate material is held by the upper and lower holding ribs 8, and the end of the plate material that is not held by hand is cut by the cutting machine A.
It is designed to prevent it from falling. Furthermore, a mounting table 23 is provided on the upper surface of the movable table 2 on the swing link 6 side.
A punch receiving stand 24 and a horizontal stand 25 are integrally projected upward, and the upper surface of each protrusion is flush, and a plate material such as a tile is placed horizontally on the protrusion. A hole can be punched into the plate material using a punch 26 which protrudes downward from the lower surface of the center of the operating handle 5. Here, the punch holder 24 has a punch hole 27 through which a punch 26 is inserted. In addition, reference numeral 28 in the figure represents an auxiliary hardware, one end of which is pivotally attached to the swing link 6 via the fourth pin 14 so as to be vertically movable, and a leg 29 hanging vertically is mounted on the other end. A blade 31 is adapted to rest on the upper surface of the recessed step 30 of the mounting base 23, and is curved concavely and protrudes toward the other end on the upper surface of the base end of the operating handle 5.
is a slit 32 provided on the top surface of the auxiliary fitting 28.
The inside can be inserted freely. As shown in FIG. 6, when the grip 22 of the operating handle 5 is lifted upward, the blade 31 protrudes from the slit 32 onto the upper surface of the auxiliary hardware 28, causing the blade 31 and the auxiliary hardware 28 to
A space 33 is formed between the top surface and the operating handle 5 after inserting a small plate into the space 33.
By moving the machine downward, even small plates can be cut.

[Effects of the invention] As described above, the present invention has a movable blade that is elongated in the lateral direction and has an arcuate shape with its longitudinal center portion protruding downward, and is attached to the lower surface of the movable base to replace the fixed blade of the fixed base. Since the upper and lower sides correspond to each other, when cutting a board between the movable blade and the fixed blade, force can be applied to the board from the downwardly protruding central part of the movable blade, making it easy to cut the board. It can be cut, and in addition, a groove is formed on the lower surface of the movable base, a protrusion is formed at the bottom of the groove, and the movable blade is inserted into the groove, and the upper end surface of the movable blade is cut. The center of the movable blade is brought into contact with the bottom surface of the protruding part, and the end faces of both longitudinal sides of the movable blade are brought into pressure contact with the inner surface of the locking part formed by protruding downward at both longitudinal ends of the groove. The movable blade is in contact with the protruding part and both ends are pressed against the locking part, so that the movable blade can be kept in an arched shape without being deformed in a straight line, This can prevent the sharpness from deteriorating due to repeated use of the cutting machine.

In addition, since the movable blade is held on the movable base by the longitudinal end surfaces of the movable blade coming into pressure contact with the inner surface of the locking part, the number of parts required to attach the movable blade to the movable base is reduced. It's also effective. Furthermore, cutouts are provided in at least one side wall in the width direction of the groove to allow the cutting edge of the movable blade to be viewed diagonally from above at multiple locations in the longitudinal direction of the groove. This has the advantage that the cutting edge of the movable blade can be seen from diagonally above, making it easier to align the cutting edge of the movable blade to the position where the plate material is to be cut.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a main part of an embodiment of the present invention, Fig. 2 a and b are sectional views of main parts of the same as above, Figs. 5
6 is a schematic explanatory diagram of the same as the above, FIG. 7 a, b, and c are sectional views of the main parts of other embodiments of the same as the above, and FIG. 8 is a perspective view of the conventional example. It is. 1 is a fixed base, 2 is a movable base, 3 is a fixed blade, 4 is a movable blade, 5 is an operating handle, 36 is a notch, 38 is a groove, 43 is a protrusion, 44 is a locking part, A is a board cutting part It is a machine.

Claims (1)

[Scope of utility model registration request] A movable base is disposed above the fixed base, and one end of the movable base is pivoted to one end of the fixed base, and the movable base is pivoted to the fixed base so as to be movable up and down by operating the operation handle. A concave groove is provided on the lower surface along the movable base, and a protrusion protruding downward is formed at the groove bottom in the longitudinal center of the concave groove, and a movable blade formed long in the horizontal direction is inserted into the concave groove. The upper end surface of the movable blade is brought into contact with the bottom surface of the protruding part, and the longitudinally opposite end faces of the movable blade are attached to the inner surface of the locking part formed by protruding downward at both longitudinal ends of the groove. The movable blade and the fixed blade provided on the top surface of the fixed base are brought into pressure contact with each other vertically, and the cutting edge of the movable blade is pressed diagonally upward at multiple locations in the longitudinal direction of the groove on at least one side wall in the width direction of the groove. A board cutting machine with a recessed cutout that allows for visual inspection.