JPH067889Y2 - Sandblast stone engraving machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a sandblast stone engraving machine used for engraving a stone surface by sandblasting.

(Prior Art) When engraving a stone surface by sandblasting, conventionally, an operator holds a sand spraying nozzle in his hand and directs the tip of the sandblasting nozzle to the stone surface coated with a rubber plate, and Along the way, they are moved appropriately.

(Problems to be solved by the invention) In the above conventional means, if it is desired to improve the work efficiency, it is possible to raise the pressure of the air used for the spray nozzle, but if the pressure is too high, Since the spray nozzle cannot be supported by the hand, there is a certain limit to that extent, and with the conventional means, there is a problem that the operator is easily tired and is easily exposed to stone powder and abrasives.

The present invention has been made in view of the above problems, and makes it possible to improve work efficiency dramatically and with less fatigue, and at the same time, makes it difficult for workers to be exposed to stone powder or abrasives. The purpose is to provide a stone engraving machine.

(Means for Solving the Problems) In order to achieve the above object, the present invention forms a box-shaped processing chamber having an opening on the front surface, and the opening is slidable in the vertical direction by guide members provided on both sides thereof. The curtain body is displaceably guided and is shielded, and the curtain body has upper and lower portions made of rubber (hereinafter referred to as synthetic resin and similar articles).
It is assumed that a transparent observation window and an opening window closed by a rubber curtain are provided in the middle of the vertical direction in the form of a band made of a material, and the outside of the opening is along both sides. A vertical orbital body is installed in parallel with each other, and a horizontal orbital body is guided to these vertical orbital bodies so as to be vertically displaceable by driving a motor, and a carriage carrying a sand spray nozzle is driven by the motor on the horizontal orbiting body. In addition to being guided by horizontal displacement, each motor can be automatically controlled by a control device, the nozzle has its tip facing the processing chamber through the opening window, and the curtain body is adapted for vertical displacement of the horizontal track body. The feature is that they can be displaced in conjunction with each other.

(Operation) In the device of the present invention, the horizontal orbiting body is vertically displaced by being driven by the motor while being guided by the vertical orbiting body, and at the same time, the curtain body is displaced in association with the horizontal orbiting body and the carriage is driven by the motor. Since it can be operated so as to be horizontally displaced while being guided by, the sand spray nozzle can move to an arbitrary position within a certain range in the processing chamber through the opening window. Therefore, the sand spray nozzle automatically and regularly moves within a certain range along the stone surface to be engraved by automatically controlling the motor with the stone placed in a certain position in the processing chamber. Become.

Then, the surface of the stone material is eroded at a predetermined portion by the abrasive material sprayed from the sand spray nozzle, and engraving is performed as planned in advance.

During this engraving work, the sand spray nozzle is supported by the carriage and moved by the driving force of the motor, so the pressure of the air used for it can be made high enough to dramatically improve the work efficiency. At the same time, the diameter of the injection port can be made sufficiently large.

Further, the processing chamber shielded by the curtain body and the like acts so as not to scatter the stone powder generated during the engraving work performed therein and the abrasive material sprayed from the sand spraying nozzle to the outside.

(Example) Hereinafter, a specific example of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a perspective view of the device of the present invention, FIG. 2 is a view of the device equipped with a curtain body, and FIG. 3 is a perspective explanatory view showing a stone working condition in a working chamber.

In the figure, reference numeral 1 is a box-shaped processing chamber, and a side surface 1a is provided with a door 2 for carrying in a stone material, and a front surface 1b thereof is provided with a square opening 3 (see FIG. 3).

Therefore, the opening 3 is shielded by a curtain body, which will be described later. Therefore, in this embodiment, the opening 3 is covered with a curtain device 4 as shown in FIG.

The curtain body 5 is formed into a rectangular band-like body whose upper and lower parts are made of rubber, and has a narrow transparent viewing window 6 in the middle of the vertical direction.
Is provided in a horizontally long shape, and a narrow opening window 8 closed by a rubber screen 7 is also provided in a horizontally long manner in the vicinity of the observation window 6. Here, the transparent viewing window 6 is formed by inserting a glass 10 into a rectangular frame 9, and the opening window 8 is formed by arranging narrow strips 7a in an opening frame (not shown) formed following the rectangular frame 9. It is the one in which the rubber curtains 7 arranged in a shape are hung.

Reference numeral 11 is a frame-shaped substrate having a large opening (not shown) in the central portion, which is used for supporting the curtain body 5, a driving roll 12 is provided at the upper portion, and a rotating roll 13 is provided at the lower portion.
Are provided so as to face each other so as to be rotationally displaceable, and a pair of guide members 14, 14 are arranged in parallel on each side with a certain distance therebetween, and one interlocking rope 15 is provided for each of the rolls 1.
Wrap several times every 2 and 13 and attach springs 16 to both ends.
And connect another rope 17 to drive roll 1
It is wound around only 2, the upper end is fixed, and the weight 18 is suspended at the lower end. Here, the interlocking rope 15 is used to synchronously rotate the rolls 12 and 13, and the other rope 17 applies the load of the weight 18 to assist the upward displacement of the curtain body 5. Is to be transmitted to. 13A guides the curtain body 5 with a guide roll fixed to the frame-shaped substrate 11.

The upper rubber band 5a of the curtain 5 is wound around the drive roll 12 to fix its end, while the lower rubber band 5b is wound around the rotary roll 13 to similarly fix the end thereof. In addition, each side edge of the curtain body 5 is guided by a pair of guide members 14, 14 so as to be vertically slidable and displaceable. As shown in FIG. 3, on the inner surface of the curtain body 5, two illumination lamps 15 and 15 are fixed to the inner surface of the rectangular frame 9, which is operated by blinking by a switch 16 provided on the outer surface of the rectangular frame 9. There is.

17 and 17 are near the outside of the opening 3 and
The vertical rails are provided opposite to each other at both sides along the above, and the upper and lower portions thereof are connected by the horizontal members 18 and 18 and are supported on the front surface of the processing chamber 1. A motor 2 in which a horizontal track body 19 installed between the vertical track bodies 17 and 17 is vertically displaceably guided and fixed on the vertical track body 17.
The driving force of 0 causes vertical displacement through the chain 21.

Further, a carriage 22 carrying a sand spray nozzle 21 is horizontally displaceably guided on the horizontal rail 19 and is driven by a driving force of a motor 23 fixed to an end of the horizontal rail 19 via a chain (not shown). It is designed to be horizontally displaced. The tip of the nozzle 21 is exposed to the inside of the processing chamber 1 through the opening window 8, and an abrasive repelling prevention plate 24 is fixed to the inner surface side of the rubber heating screen 7 halfway in the longitudinal direction.

Further, the curtain body 5 rotates the driving roll 12 to rotate the horizontal orbit body 1 through an interlocking mechanism (not shown).
It is configured to be displaced in conjunction with the vertical displacement of 9.

25 is a control device for the motors 20 and 23 (not shown)
Automatic manual switch 2 on the operation panel for operating
6, 27, etc. are provided. When the switches 26 and 27 are set to the automatic side, a control mechanism for automatically performing the vertical displacement of the horizontal track body 19 and the horizontal displacement of the carriage 22 can function, and when set to the manual side, those vertical displacement and Therefore, the control mechanism that can perform the horizontal displacement by the artificial switch operation can function.

In the figure, 28 is a limit switch, 29 is a blast hose, and 30 is an exhaust duct.

Next, the operation of stone engraving with the above embodiment will be described. First, the operator applies a stone surface w1 to be engraved to the stone material by coating with a rubber plate or the like (referring to the stone material surface with a rubber plate or the like having through holes of the same form as the engraving). w is carried into the processing chamber 1 through the door 2, and the stone surface w1 is made to face the sand spray nozzle 21. After that, the operator operates the appropriate switches on the operation panel 25 to set the vertical displacement distance of the horizontal track 19 and the horizontal displacement distance of the carriage 22, and sets the automatic manual changeover switches 26 and 27 to, for example, the automatic side. Set to
Start it. Then, for example, the sand spray nozzle 22 will be reciprocally displaced by the automatic vertical displacement of the horizontal track body 19 within a fixed vertical distance set together with the curtain body 5, and at the same time, the automatic horizontal displacement of the carriage 22 will simultaneously cause the rubber curtain. While scraping 7 in the horizontal direction, it is reciprocally displaced within a fixed horizontal distance set, and automatically and regularly moves within a fixed range along the stone surface w1. As a result, the abrasive sprayed from the sand spraying nozzle 21 collides with the stone surface w1 through the through holes such as the rubber plate used for coating, so that the stone surface w1 is engraved in the same shape as the through holes. Becomes

On the other hand, when one automatic manual changeover switch 26 is set to the manual side, the horizontal track body 19 starts by an artificial switch operation and vertically displaces vertically in any one of the upper and lower directions. When set to the manual side,
For the first time, the carriage 22 is horizontally displaced in an arbitrary fixed direction on either the left or the right by an artificial switch operation. Therefore, the sand spray nozzle 21 can be manually moved to an appropriate position along the stone surface w1.

At this time, the operator can visually inspect the processing state of the stone material in the processing chamber 1 through the transparent viewing window 6 at any time. Further, the abrasives sprayed together with air into the processing chamber 1 and stone powder generated during the processing of stones are blocked from external leakage by the processing chamber 1 which is closed by the door 2 and the curtain body 5, and the exhaust duct is provided. It is suctioned and discharged from 30 as appropriate and dust-removed.

(Effect of device) As described above, according to the present invention, since the sand spray nozzle is carried on the carriage, the pressure of the air used for this can be higher than before, and the efficiency can be dramatically improved. Since it is possible to perform stone engraving specifically, the work can be labor-saving and less fatigued.
Also, since stone engraving is performed in the processing room, it is possible to prevent workers from being exposed to stone powder generated during work and abrasives ejected from the sand spray nozzle, and the workers should wear a dust mask. It can prevent health problems such as pneumoconiosis without needing to do so.

According to an experiment conducted by the present inventor, when the diameter of the jet nozzle of the sand spray nozzle 21 is set to 7 to 8 mm, it takes 4 hours using the conventional jet nozzle having the nozzle diameter of 2 to 3 mm. The work is labor-saving in only 30 minutes.

[Brief description of drawings]

FIG. 1 is a perspective view of the device of the present invention, FIG. 2 is a view around the curtain body, and FIG. 3 is a perspective explanatory view showing a processing situation in a processing chamber. 1 ... Processing room, 3 ... Opening, 5 ... Curtain body, 6 ...
Transparent viewing window, 8 ... Opening window, 14 ... Guide member, 17 ...
... vertical orbiters, 19 ... horizontal orbiters, 20 and 23 ...
Motor, 21 ... Sand spray nozzle, 22 ... Carriage.

Claims (1)

[Scope of utility model registration request] 1. A box-shaped processing chamber having an opening at the front is formed, and the opening is shielded by a curtain body which is slidably displaced in the vertical direction by guide members provided at both sides of the box-shaped processing chamber. The curtain body is a belt-shaped body made of rubber material in the upper and lower parts, and a transparent viewing window and an opening window closed by a rubber screen are provided in the middle of the vertical direction, and outside the opening. Vertical rails are installed in the vicinity of both sides of the vertical rails so that the horizontal rails can be vertically displaced by the motor drive and the sand spray nozzles are carried on the horizontal rails. Guide the carriage so that it can be horizontally displaced by driving the motor,
Moreover, in addition to enabling each motor to be automatically controlled by a control device, the nozzle has its tip exposed to the processing chamber through the opening window, and the curtain body is displaced in conjunction with the vertical displacement of the horizontal track body. Characteristic sandblasting stone engraving machine.