KR900002257Y1 - Stone grinder - Google Patents

Abstract

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Description

Automatic stone grinder

1 is a partial cutaway front view of a stone polishing machine according to the present invention.

FIG. 2 is a plan view of a partially cut away stone grinder according to the present invention, in which the "A" part of FIG. 2 is a cross-sectional view taken along the line A'-A 'of FIG. 1, and the "B" part of FIG. 2 is B'-B' of FIG. Line section.

3 is a side view of a stone polishing machine according to the present invention.

4 is an enlarged cross-sectional view taken along the line C-C of FIG.

5 is an enlarged sectional view taken along the line D-D in FIG.

6 is an enlarged cross-sectional view taken along line E-E of FIG. 5 showing the configuration and operation of the head drive unit according to the present invention.

* Explanation of symbols for main parts of the drawings

10: lift drive unit 12: guide pillar

20, 20 ': trolley 21, 21': driving girder

30: drive frame 31: hydraulic cylinder

33: drive motor 32: polishing head drive unit

42: head fixing part 43, 44: inner and outer packing gland

45 dustproof packing 50 belt conveyor

60: abrasive plate

The present invention relates to a stone polishing machine for polishing the surface of various building stones, including marble, granite, etc., and in particular, an automatic stone polishing machine for more efficiently polishing the stone that is processed only after several steps of polishing processes are performed sequentially. It is about.

In general, in order to polish the surface of a building stone such as marble or granite using a polishing machine equipped with abrasive stones, several steps of polishing processes are required. In other words, in polishing a single stone cut to a predetermined standard, a rough abrasive plate having a high surface roughness is first used, and then a surface of the stone is sequentially used by gradually using abrasive plates having a low roughness. In general, the polishing process is performed in 7-11 steps.

However, in the conventional grinding machine used for polishing such a stone, by rotating the drive shaft on which one abrasive plate is mounted by a motor and pressing the manual handle provided on one side of the drive shaft to lower the drive shaft, the abrasive plate installed at the end thereof is lowered. Manual grinding machines are known in which the surface of the stone is polished by being brought into contact with the upper surface of the stone loaded on the bed.

Therefore, in polishing the stone using such a conventional polishing machine, not only have the disadvantages of work that requires a skilled work force for artificial manipulation of the manual handle and the hard work by them, but also In order to go through several stages of grinding process sequentially, when one stage of processing is completed, it is replaced by the grinding plate necessary for the next stage of processing, or it is equipped with several grinding machines equipped with grinding plates of different specifications together Whenever this is done, it is inconvenient to move the work to the next step, such that the uniform and precise processing throughout the surface of the stone is impossible and the productivity is significantly reduced, there is a problem that mass production is impossible.

On the other hand, in view of the drawbacks and problems of the manual grinding machine as described above, a reciprocating grab is installed on the girder of the door frame to provide a grinding plate on the grab, and the grinding stone is arbitrarily selected for each arm of the grinding plate. It is detachably mounted so as to elevate the electric shaft which is transmitted to the correct position for each axis of the abrasive stone on the rotational track of each abrasive stone.In addition, the bogie loaded with the workpiece is arranged in the lower direction of the abrasive stone so as to reciprocate. A stone automatic polishing device which captures the workpiece with a photoelectric tube and automatically controls the reciprocating motion of the bogie and grab and the rotation of the polishing panel by linking the photoelectric tube with the automatic control panel is disclosed in Korean Patent Application Laid-Open No. 54-158792. It is known.

However, such a conventional automatic polishing apparatus has a single door type, i. A girder with a grab is provided between the right frames, and a plurality of arms are radially arranged on the shaft of the polishing plate installed on the grab, and abrasive stones and papes having different roughness are provided at each end of each arm. In order to grind the workpiece using the polishing device configured as described above, first, the arm having the abrasive stone having coarse roughness is rotated, and the abrasive stone is placed on top of the workpiece loaded on the trolley and the abrasive stone is placed. Grinding one workpiece while moving in three stages, such as sphere → lattice type → zigzag shape, and then, when such primary polishing is completed, the arm is rotated by a predetermined angle (1/8 rotation). ), The abrasive stone having the following roughness is moved to the upper part of the workpiece, and then the secondary polishing is performed by the above three-step polishing operation, and in this manner, the third , 4th, 5th… Since the upper surface of a work piece is continuously processed by performing the polishing operation step by step, such a rotary polishing device has a complex switching process for engaging and separating clutches that are cumbersome every time the position of each abrasive stone is sequentially selected. Not only does it have the disadvantage of requiring a complicated power transmission structure and a sensing and control device, but also the productivity of the extremely low productivity since the rest of the polished stone is always in standby while one polished stone is driven. There were disadvantages and problems.

Accordingly, the main object of the present invention is to provide an automatic stone polishing machine which does not have all the disadvantages and problems as described above.

Another object of the present invention is to provide a polishing head having a plurality of abrasive plates by continuously feeding and supplying stone cut to a predetermined standard at a lower portion of a drive frame arranged in a straight line according to the order of roughness. Stepwise grinding of the stone can be performed quickly in a series of continuous operations by simultaneous driving of each grinding plate, which can significantly reduce the time required for grinding of the unit stone, and uniform and precise polishing throughout the surface of the stone. The present invention provides an automatic stone grinder capable of processing.

When described in detail by the accompanying stone grinding machine of the present invention for achieving the above object as follows.

As shown in the drawing, the grinding machine of the present invention is a vertically driven drive of a well-known type, which is installed upright in parallel with the upper end of each fixed structure 11 to which a tool array is constructed, and is guided by four vertical guide pillars 12. It is mounted on the upper part of the traveling girders 21 and 21 'which are respectively installed between the device unit 10 and the front and rear guide pillars 12 on both sides of the elevating drive unit 10, and the driving drive motor ( 22 is provided with a general moving trolley 20 and 20 'installed to be reciprocated in the forward and backward directions according to the driving, and a plurality of polishing head driving units 32 driven by the hydraulic cylinder 31. And a driving frame 30 installed between the moving trolleys 20 and 20 'and a lower portion of the driving frame 30 and a processing object, that is, a stone S cut to a predetermined standard. It consists of a belt conveyor 50 for conveying at a speed.

The lifting drive unit 10 includes a screw rod 31 which is installed adjacent to each other in parallel with each other inside the vertical guide pillar 12 having a constant height as shown in part "A" of FIG. And, each of the guide posts 12 and the screw rod 13, the lifting rod 14 and each screw rod connected to the screw rod 13 and the fitting of the screw to be elevated according to the rotation of the screw rod 13 ( It consists of a gear box 15 is installed on the top of 13).

Two driven bevel gears 15b are provided on the driven bevel gear 15a as shown in part "B" of FIG. 2 at the upper end of each screw rod 13 exposed to the inner lower side of each gearbox 15. 15b ') are meshed together, and each of these electric bevel gears 15b and 15b' is connected to the electric shafts 16 and 16 ', which are carried out between the adjacent gearboxes 15, respectively. A lift drive motor 17 is provided at the upper end of the gear box 15, and a drive bevel gear 17a that engages the respective electric bevel gears 15b and 15b 'is provided at the end of the drive shaft. Each drive shaft 16, 16 'is rotated in accordance with the forward and reverse rotation of the drive motor 17, and the driven bevel gear 15a and the screw rod 13 are interlocked to rotate each screw rod 13 It is possible to raise or lower the hatch 14 provided in the same width | variety. Reference numeral 18 in the drawings shows a protective cover.

As shown in FIGS. 3 and 4, each hatch 14 installed as described above has left and right driving girders 21 and 21 ′ installed across the front and rear guide pillars 12. Both ends are connected to each other, and each of the traveling girders 21 and 21 'is provided with a moving cart 20 and 20' on which the driving drive motor 22 is mounted in parallel. Each of the moving carts 20 and 20 'is provided with a pinion 26 which is driven by the pulley 25 connected to each of the driving drive motors 22 by the pulley 23 and the belt 24, respectively. Each of these pinions 26 allows moving trolleys 20 and 20 'to move forward and backward along both traveling girders 21 and 21'.

In addition, a driving frame 30 in which a plurality of abrasive driving motors 33 and the head driving unit 32 are arranged in a row is installed between the two moving trolleys 20 and 20 '. . In the front and the upper side of the drive frame 30, the fixing plate 34 bent to have a "-" shaped cross section is provided at regular intervals along the longitudinal direction of the frame 30, so that the upper surface of the fixing plate 34 Each driving motor 33 is continuously installed at a predetermined distance, and the vertical cylindrical polishing head main body 32 'of each head driving part 32 is placed on the front surface of the driving frame 30 by the bracket 35. It is fixedly installed.

As shown in FIG. 6, the lower end of each of the head bodies 32 'corresponds to the flange 32'a in the inside of the head main body 32' formed with the flange 32'a. The lifting and lowering sleeve 36 provided with the flange 36a is inserted and installed to flow freely, and the hydraulic cylinders 31 are respectively installed on the upper surfaces of the flanges 32'a of the head body 32 '. An end portion of the actuating lobe 31a which runs down the flange 32'a is connected to both flanges 36a of the actuating sleeve 36 so that the actuating sleeve 36 is driven by the driving of each cylinder 31. Can be lifted up and down along the inner surface of the head body 32 '.

Inside the operating sleeve 36 installed as described above, the intermediate portion of the main shaft 37 of a predetermined length having a water hole 37b formed therein is inserted and interposed on the inner and lower ends of the operating sleeve 36. It is supported by the ball bearings 38 and 38 ', so that the main shaft 37 can be freely rotated in parallel with the lifting operation of the operating sleeve 36, and the upper end of the main shaft 37 The driving pulley 39 of the driving motor 33 and the driven pulley 41 connected to the belt 40 are inserted.

The driven pulley 41 is provided with a key 14a protruding from the inner surface of the pulley 41 and inserted into a slide key groove 37a formed along the longitudinal direction at the upper end of the main shaft 37. It is possible to transmit the rotational force of the driven pulley 41 to the main shaft 37 without being concerned with the lifting operation of the same main shaft 37, the lower end of the main shaft 37, the head plate to which the abrasive plate 60 is connected and fixed Bar 42 is inserted into the bar, the upper end of the head fixing portion 42, the inner and outer packing gland 43, 44 having an uneven circumferential wall, respectively, are installed, the inner and outer packing gland 43 (44) is interposed between the uneven circumferential wall of the anti-vibration packing 45 having an uneven surface corresponding to the uneven circumferential wall is generated when the grinding plate 60 to be rotated and lowered in contact with the stone (S) to be processed The shock absorber can be alleviated.

In addition, a water supply pipe 46 having a plurality of branch pipes 46a is provided in the transverse direction on the front portion of the fixed plate 34, and the ends of the branch pipes 46a have upper and lower scales of the fixed plate 34. It is connected to the water supply hole (37b) of each of the above-mentioned main shaft 37 through the water supply pipe 46 is discharged downward through the main shaft 37 and the polishing plate 60 of the lower end In addition to the lubrication action according to the contact between the abrasive plate 60 and the stone (S) to be processed, it is possible to wash the upper surface of the stone (S).

In the figure, reference numeral 47 shows an opening and closing cock installed in each branch pipe of the feed pipe 46.

As described above, the abrasive plate 60 of each abrasive head drive unit 32 continuously installed along the longitudinal direction of the drive frame 30 has a high surface roughness from the entry side of the stone S to be processed. After the plate 60-1 is installed, the abrasive plates 60-2, 60-3, 60-4, 60-5 ... 60-11 having gradually lower roughness are sequentially installed. On one side of the head drive part 32, a conventional detection sensor (not shown) for checking the supply remains of the stone S to be transferred and operating the respective driving motors 33 and the cylinders 31 is provided. It is installed.

On the other hand, a base 52 having a plurality of rollers 15 provided on the upper side is provided in the same direction as the drive frame 30 in the lower portion of the drive frame 30 as described above. At both ends, the driving drums 53 and 53 'are installed, and the belt conveyor 50 is installed between the outer peripheries of these driving drums 53 and 53'. 53 ') to convey the belt conveyor 50 in a predetermined direction in accordance with the rotation of the stone (S) to be processed can be continuously supplied.

Next, the operation state according to the operation of the automatic stone polishing machine according to the present invention configured as described above is as follows.

First, in the operation of the stone polishing machine of the present invention, the stone head processing unit installed in the driving frame 30 while continuously supplying the stone S to be processed through the belt conveyor 50 which is decelerated and driven at an appropriate speed. 32 to drive the lift drive motor 17 of the lift drive unit 10 to adjust to the height of the stone (S) for transporting, when the drive motor 17 is driven one side gearbox (15) The driving bevel gear 17a inside rotates the electric bevel gear 15b '15b' engaged therewith and the driven bevel gear 15a at the bottom thereof, and at the same time, rotates the respective electric shafts 16, 16 '. Since the screw rods 13 installed between the gear box 15 and the structure 11 are rotated together, the screw rods 13 are rotated according to the forward and reverse rotation of the driving motor 17. Each hatch 14 inserted by threaded fitting and left and right assembled integrally with it It is to set the working position of the line girders (21, 21 ') along the respective vertical guide post 12 provided on the drive frame 30 by raising or lowering the polishing head driver 32 to the appropriate height.

As described above, the first polishing plate installed on the right side of the driving frame 30, that is, the stone S, which is transferred and supplied through the belt conveyor 50 in the state in which the height of each head driving part 32 is adjusted ( 60-1), the detection sensor (not shown) installed on one side thereof detects this, and thus the driving motor 33 is driven to drive the main shaft 32 of the head driving part 32 connected to the belt 40. At the same time as to rotate 37, the cylinder 31 installed in the main body 32 'is driven to cause the piston rod 31a to lower the actuating sleeve 36. By lowering the spindle 37 adhering to the upper and lower ball bearings 38 and 38 ', the lowering operation of the abrasive plate 60-1 provided on the head fixing part 42 at the lower end thereof is performed. The water through each branch pipe 46a of the feed pipe 46 Through the shaft 37 is injected to the surface of the stone (S).

On the other hand, the driving drive motors 22 on both of the moving trolleys 20 and 20 'on which the driving frame 30 is installed are driven while the polishing operation of one step is performed, thereby moving the moving trolleys 20 and 20'. The pinion 26 installed in the) is reciprocally rotated along the rack 27 installed on the upper surface of each traveling girder 21, 21 ′, so that the polishing plate contacted and rotated on the surface of the stone S as described above. (60-1) is moved in the forward and backward directions, and with this, the stone S by the belt conveyor 50 is slow-moved, so that the polishing is not limited to the stone S specifications, but is carried out over the entire surface. Machining can be made.

In addition, the stone S which finishes the process by the 1st polishing board 960-1 in this way is following 2nd, 3rd,... While passing through the eleventh polishing plates 60-2, 60-3, 60-4,. Next, the second and third stone Ss adjacent to each other are continuously transferred, so that the simultaneous grinding of the plurality of stones S loaded and transported on the belt conveyor 50 becomes possible.

The automatic stone grinder according to the present invention as described above, in the polishing process of the surface of the stone produced by the sequential grinding process of several steps, by installing a drive frame between the moving trolley reciprocating along both girders By arranging the polishing heads having a plurality of polishing plates in a straight line according to the order of their roughness, and feeding and supplying the stones to be processed to the lower part of the drive frame at a prescribed speed, Since multiple stages of continuous work can be performed in a series of continuous operations, not only can a large amount of stone be quickly and easily polished, which greatly improves its productivity, but also enables precise and uniform polishing of the stone surface. There is an effect such as to increase the reliability of the product.

Claims (2)

Moving trolley 20, 20 'capable of moving up, down, and up and down on top of traveling girders 21, 21' provided between the front and rear guide pillars 12 of the elevating drive unit 10. And an automatic stone for polishing the stone S supplied on the belt conveyor 50 by the polishing plate 60 of the polishing head drive unit 32 driven by the driving motor 33 and the hydraulic cylinder 31. In the polishing machine, a driving frame 30 in which a plurality of polishing head driving units 32 are arranged at equal intervals is disposed between both moving trolleys 20 and 20 'arranged at a predetermined distance, and the driving frame ( Each grinding head driving part 32 arranged in a straight line along the longitudinal direction of 30 is gradually stepped to the head fixing part 42 of a plurality of stones S continuously supplied in one direction along the belt conveyor 50. Characterized in that a plurality of abrasive plates (60: 60-1, 60-2, 60-3, 60-4, ... 60-11) are fixed in accordance with the order of the roughness East stone grinder. The inner side of claim 1, wherein the head fixing portion (42) to which each of said abrasive plates (60) is fixed is installed. And an anti-vibration packing (45) having an uneven surface corresponding thereto between the uneven main walls of the outer packing glands (43) (44).