JPH05330295A - Carving machine - Google Patents

Abstract

PURPOSE:To ensure that cut power is discharged by installing a sleeve with a tapered inner diameter in an annular space formed around the periphery of a rotating bar-like cutter with a blade provided at the tip, on the circumference of the tip of the cutter, and forming a communication opening leading to an outer area from the annular space in the sleeve, when a carving machine which carves the surface of an acrylic plate is used. CONSTITUTION:A bar-like cutter 10 having a blade 12 at the tip is mounted on a spindle 14 in a freely detachable manner, and is allowed to rotate to carve a plate 90. A cylindrical sleeve 40 with a tapered inner diameter is attached to the periphery of the cutter 10. Then an annular space 42 is formed between the inner side of the sleeve 40 and the outer side of the cutter 10. Further, a communication opening 44 is provided on part of the lateral wall of the sleeve 40 to allow the annual space to communicate with the outer part of the sleeve 40. In addition, the communication opening 44 is connected to an aspirator through a connection hose to aspirate and discharge cut powder generated by the cutter 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an engraving machine for engraving characters, symbols, etc. on a plate surface of acrylic, aluminum or the like.

[0002]

2. Description of the Related Art Generally, a copying type engraving machine is used as an engraving machine for engraving characters or symbols on the plate.

The engraving machine using the copying method follows the movement of the stylus brought into contact with the template in which characters, symbols, etc. to be engraved are cut out and moves the cutter back and forth and left and right on the plate surface. At the same time, the cutter is rotated so that the blade surface at the tip of the cutter scrapes the plate surface. Then, the same characters and symbols as those cut out on the template are stamped on the plate surface.

By the way, when characters, symbols, etc. are engraved on the plate surface by using the above engraving machine, the cutting powder scraped off the plate surface by the tip of the cutter scatters in four directions to stain the area around the engraving machine. It got into the eyes of the carving operator.

Therefore, an engraving machine described in Japanese Utility Model Publication No. 63-41197 has been proposed. This engraving machine is, as shown in FIG. 2, an annular member 460 having a U-shaped cross section on the outer circumference of a sleeve 400 provided around the tip of the rod-shaped cutter 100.
The sleeve 400 is attached to form an annular space 420 on the outer circumference of the sleeve 400, the annular space 420 and the inner space of the sleeve 400 are communicated with each other through a communication port 440 provided in the sleeve 400, and the annular space 420 is connected to the annular member 460. A discharge port 490 is provided to connect the ring member 460 and the outside of the annular member 460.

In this engraving machine, the blade portion 12 at the tip of the cutter is used.
Cutting powder that is scraped with 0 and scattered in 4 directions
The suction dust is sucked into the inner space of the sleeve 400 around the tip, and the suctioned cutting powder is communicated with the inner space of the sleeve 400.
An annular space 42 around the outer circumference of the sleeve 400 that communicates with each other through 0.
0 through the discharge port 490 provided in the annular member 460 to the outside of the annular member 460 in the suction device or the like.

[0007]

However, in the above engraving machine, the cutting powder sucked into the inner space of the sleeve 400 is sucked through the labyrinthine and complicated communication port 440, the annular space 420, and the discharge port 490. All of the cutting powder that had been discharged into the device or the like and was sucked into the inner space of the sleeve 400 could not be discharged exactly into the suction device or the like through these complicated labyrinthine passages.

At the same time, the suction device removes the sleeve 400.
The suction force acting on the inner space is weak, and all of the cutting powder scattered in the four directions of the cutter 100 cannot be exactly sucked into the inner space of the sleeve 400 accurately, and the cutting powder is spread outside the sleeve 400. It has been scattered.

Further, in the above engraving machine, the annular space 4
It took a great deal of time and time to form an annular member 460 having a U-shaped cross section for forming 20 and to attach the annular member 460 to the outer circumference of the sleeve 400 by welding or the like.

In the above engraving machine, the cutter 1
There is a wide space around the cutter 102 that communicates the inner space of the main shaft 300 supporting 00 and the inner space of the sleeve 400, and the cutting powder sucked in the inner space of the sleeve 400 is
For example, the inner space of the main shaft 300 communicating with the inner space of the sleeve 400 is invaded, adheres to the bearing 200 supporting the cutter 100 on the main shaft 300, and the cutter 100 becomes unrotatable.

An object of the present invention is to provide an engraving machine that solves the above problems.

[0012]

In order to achieve the above object, the engraving machine of the present invention is an engraving machine for rotating a rod-shaped cutter having a blade portion at its tip and scraping the plate surface with the blade portion at the tip of the cutter. In a sleeve having a tubular shape around the tip of the cutter, the sleeve having a gradually smaller inner diameter toward the front is formed, and an annular space is formed around the cutter inside the sleeve, and It is characterized in that a communication port for communicating the annular space and the outside of the sleeve is provided.

In the engraving machine of the present invention, it is preferable that the space around the cutter, which communicates the space inside the spindle supporting the cutter and the space inside the sleeve, is closed by a blocking member.

[0014]

In the engraving machine having the above construction, a suction device for sucking gas can be connected to the communication port provided in the sleeve to generate a suction force in the annular space around the cutter inside the sleeve. Then, the cutting dust generated around the cutter is sucked into the annular space around the cutter inside the sleeve, and the sucked cutting dust is collectively discharged into a suction device outside the sleeve through a communication port provided in the sleeve. can do.

At the same time, in the above engraving machine, since the inner diameter of the sleeve is gradually reduced toward the forward direction, the width of the annular space around the tip of the cutter inside the sleeve tip is narrowed to communicate with the annular space. The suction force acting from the suction device through the mouth can be increased. Then, a large amount of cutting powder generated around the blade part of the cutter tip is completely sucked into the annular space inside the sleeve tip that has been narrowed to the above small diameter, and the sucked cutting powder is sucked outside the sleeve through the communication port. It can be discharged to a device or the like.

Further, in the engraving machine in which the space around the cutter, which communicates the space inside the main shaft supporting the cutter and the space inside the sleeve, is closed by the blocking member, the cutting powder sucked into the inside of the sleeve becomes The blocking member can prevent the invasion into the inner space of the main shaft through the space around the cutter that communicates with the inner space of the sleeve and adhere to the supporting member such as a bearing that supports the cutter on the main shaft.

[0017]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 shows a preferred embodiment of the engraving machine of the present invention, specifically, an enlarged front sectional view of the periphery of the cutter.
The engraving machine will be described below.

In the figure, 10 is a bar-shaped cutter having an end mill structure having a blade portion 12 at its tip.

The rod-shaped cutter 10 is detachably mounted in a through hole 16 opened along the axis of a spindle 14 having a columnar shape. More specifically, the body portion of the rod-shaped cutter 10 is inserted into the through hole 16 of the spindle, and the rod-shaped cutter 10 is inserted.
The body is fixedly fixed in the through hole 16 using a set screw 18 provided at the upper end of the spindle 14. And
The set screw 18 is loosened so that the rod-shaped cutter 10 fixed in the through hole 16 can be freely exchanged with another rod-shaped cutter having various blade portions.

The body of the spindle 14 has a cylindrical main shaft 3 at two upper and lower positions via bearings 20 and 22.
0 It is rotatably supported along the inner space.

The upper end of the spindle 14 projects above the main shaft 30, and a pulley 34 is fitted on the upper end of the spindle 14. The pulley 34 is an electric motor (not shown) via an endless belt (not shown) wound around the pulley 34.
Connected to. Then, the electric motor is rotated to rotate the spindle 14 fitted with the pulley 34 in the main shaft 30 and the cutter 10 fixed in the through hole 16 of the spindle.

The main shaft 30 is supported by a carving machine body (not shown) via a link mechanism (not shown) so as to be movable back and forth and left and right, and in the same manner as the conventional carving machine described above, a template (see FIG. The stylus can be moved back and forth and left and right in accordance with the movement of the stylus that is moved along the characters, symbols and the like engraved on (not shown). Then, the blade portion 12 of the cutter that rotates together with the spindle 14 supported inside the main shaft 30 is capable of engraving characters, symbols and the like engraved on the template on the surface of the plate 90.

The above construction is the same as that of the conventional engraving machine described above, but in the illustrated engraving machine, a cylindrical sleeve 40 is provided around the tip of the cutter 10 supported by the spindle 14. An annular space 42 is formed around the cutter 10 inside the sleeve 40.

The sleeve 40 is formed so that its inner diameter is gradually reduced toward the front. And the blade part 12 of the cutter
The annular space 42a around the cutter 10 on the inner side of the tip of the sleeve 40 is formed narrower.

The sleeve 40 is provided, at a part of its side wall, with a communication port 44 for communicating the annular space 42 inside the sleeve 40 and the outside of the sleeve 40. A tubular body 46 is provided at the communication port 44 so as to project toward the outside of the sleeve 40, and the communication port 44 and the inside of a suction device (not shown) such as an air compressor are connected via the tubular body 46. Connecting hose 48
Can be connected to the connection port 44.

Further, in the illustrated engraving machine, the cutter surrounding space 32, which connects the inner space of the main shaft 30 and the inner space of the sleeve 40, is closed by the blocking member 50. Specifically, a bulging portion 14a is provided at the tip of the spindle 14, and the bulging portion 14a closes the cutter surrounding space 32. The blocking member 50 prevents cutting powder generated around the blade portion 12 of the cutter from entering the space inside the main shaft 30 supporting the cutter 10 through the spindle 14 through the space 32 around the cutter.

Various other kinds of blocking members can be considered. For example, a flange portion (not shown) extends inside the tip of the main shaft 30, and the flange portion 32 surrounds the cutter surrounding space 32.
May be closed.

The engraving machine shown in FIG. 1 is constructed as described above.

Next, a usage example of this engraving machine and its operation will be described.

The communication port 44 and the inside of the suction device (not shown) are connected by a connection hose 48. Then, a suction force is generated in the annular space 42 around the cutter 10 inside the sleeve 40. Then, the cutting powder generated around the blade portion 12 of the rotating cutter is sucked into the inside of the sleeve 40, and the sucked cutting powder is passed through the communication port 44 provided in the sleeve 40 and the connection hose 48 connected to the sleeve. 40 Continue discharging into the suction device outside.

Then, the cutting powder generated around the blade portion 12 of the rotating cutter can be collectively discharged into the suction device or the like without being scattered to the four directions of the cutter 10.

At the same time, since the inner diameter of the sleeve 40 is gradually reduced toward the front, the width of the annular space 42a around the tip of the cutter 10 inside the tip of the sleeve 40 is narrowed, and the suction device is placed in the annular space 42a. The suction force acting from can be increased. And the blade part 12 of the cutter
A large amount of cutting powder generated in the periphery is sucked into the annular space 42a around the tip of the cutter 10 with enhanced suction power, and the sucked cutting powder is properly supplied to the suction device outside the sleeve 40 through the communication port 44. Can be discharged to.

Further, since the cutter peripheral space 32 which communicates the inner space of the main shaft 30 and the inner space of the sleeve 40 is closed by the bulging portion 14a around the tip of the spindle 14, the cutting powder sucked into the inner side of the sleeve 40 becomes Through the surrounding space 32, it penetrates into the inner space of the spindle 30 and the cutter 1
0 is attached to the bearings 20 and 22 which are supported by the spindle 30 via the spindle 14,
Spindle 1 supported inside the main shaft 30 via 0, 22
The bulging portion 14a can prevent the non-rotatable portion 4 from rotating.

A supporting member having a dustproof effect is used as the supporting members such as the bearings 20 and 22 for supporting the spindle 14 inside the main shaft 30. Even if cutting powder adheres to the supporting member, these supporting members are used. When there is no fear that the hindrance will interfere, the blocking member 50 that blocks the cutter surrounding space 32.
Does not have to be prepared.

[0035]

As described above, according to the engraving machine of the present invention, since the space around the cutter inside the sleeve for sucking the cutting powder is also used as the annular space for collecting the cutting powder, the cutting powder is provided on the outer circumference of the sleeve. It is no longer necessary to provide a ring-shaped space for collecting the components using a ring-shaped member or the like, taking a great deal of trouble and time.

At the same time, the cutting powder sucked into the inside of the sleeve can be directly discharged into the suction device outside the sleeve without passing through the labyrinthine thin and complicated passage through the communication port provided in the sleeve. As a result, the cutting powder sucked into the inside of the sleeve can be accurately removed to the inside of the suction device outside the sleeve through the communication port.

Further, since the width of the annular space around the tip of the cutter is narrowed to increase the suction force of the annular space, a large amount of cutting powder generated around the blade portion of the cutter is exhausted to the annular space inside the sleeve. It can be sucked and discharged accurately into the suction device outside the sleeve.

Further, in the engraving machine in which the space around the cutter that connects the space inside the spindle and the space inside the sleeve is closed by the blocking member, the cutting powder sucked into the inside of the sleeve is divided into the space inside the spindle and the space inside the sleeve. It is possible to accurately prevent the cutter from rotating into the inner space of the main shaft through the space surrounding the cutter and adhering to a supporting member such as a bearing that supports the cutter on the main shaft to prevent the cutter from rotating.

[Brief description of drawings]

FIG. 1 is an enlarged front sectional view around a cutter of an engraving machine of the present invention.

FIG. 2 is an enlarged front sectional view around a cutter of a conventional engraving machine.

[Explanation of symbols]

 10 Cutter 12 Blade 14 Spindle 14a Swelling 16 Through hole 20, 22 Bearing 30 Main shaft 32 Cutter surrounding space 34 Pulley 40 Sleeve 42, 42a Annular space 44 Communication port 50 Blocking member

Claims (2)

[Claims] 1. An engraving machine for rotating a rod-shaped cutter having a blade at its tip to scrape a plate surface with the blade at the tip of the cutter, which is a cylindrical sleeve around the tip of the cutter and has an inner diameter of A sleeve having a gradually smaller diameter toward the front is formed, and an annular space is formed around the cutter inside the sleeve, and a communication port for communicating the annular space with the outside of the sleeve is provided in the sleeve. Engraving machine. 2. The engraving machine according to claim 1, wherein a space around the cutter that connects the space inside the main shaft supporting the cutter and the space inside the sleeve is closed by a blocking member.