KR101020192B1 - Biasing guides and circular saw cutting devices adopting the same - Google Patents

Abstract

The present invention provides a circular saw blade contact guide for contacting and pressing the circular saw blade of the circular saw cutting device for cutting a metal plate, the friction rib formed on the contact surface of the contact guide to be in direct contact with the side of the circular saw blade; And a lubrication space formed between the friction ribs and having an opening to allow lubricating oil to be introduced.

Circular saws, cutters, guides

Description

Circular saw blade contacting guide and circular saw cutting device employing the same {Biasing guides and circular saw cutting devices adopting the same}

The present invention relates to a circular saw blade contact guide, and more particularly, in a circular saw cutting device for cutting a metal sheet, the circular saw blade contact to minimize contact area with the circular saw blade and the required amount of lubricating oil by employing means for lubricating oil. It's about a guide.

The present invention also relates to a circular saw cutting device having such a circular saw blade contact guide.

Applicant has disclosed a circular saw cutting device that can cut a thick metal plate using a circular saw blade in the Republic of Korea Patent Registration No. 0431752. Conventional circular saws have been used primarily for cutting round, long metal rods called round rods.

On the other hand, a band saw, oxygen cutting, or laser cutting has been used to cut thick metal sheets other than round bars.

Applicant's circular saw cutting device disclosed in the patent document relates to an invention for cutting a thick metal sheet using a circular saw blade. Unlike round bars, when cutting a metal sheet using circular saw blades, the contact area between the circular saw blade and the metal sheet is wide, which increases friction, which intensifies distortion and vibration of the circular saw blade.

Therefore, in order to overcome such a condition and smoothly cut the metal sheet, the cutting device of the patent employs a configuration in which the circular saw blade is pressed closely on both sides by using a pair of sliding supports. 3 is shown.

1 to 3 show the cut portion of the circular saw cutting device. The cutting part is installed to reciprocate on the table to which the metal plate is supplied, and cuts the metal plate by the circular saw blade, and can be opened and closed by the fixed casing 1 fixed to the main body of the cutting device and the fixed casing 1. The cover casing 2 is coupled to each other, and the circular saw blade 100 mounted in the casing (1) (2).

The circular saw blade 100 is supported while interposed between a pair of sliding supports (3) (4). The sliding support 3 on one side is fixed to the fixed casing 1, and the sliding support 4 on the other side presses the circular saw blade 100 by the biasing means 5, 5 ′.

Since the sliding support (3) (4) is in close contact with both sides of the circular saw blade 100, it is not easy to smoothly supply the lubricating oil in the gap with the saw blade. Therefore, the above patent invention employs a method of forming a through hole 6 in the sliding support 3 and 4 and forcibly supplying lubricating oil.

However, in such a configuration, the friction area between the sliding support 3 and the saw blade is very large, and the amount of lubricant required for cutting is also large.

The present invention was devised in view of the above problems, and minimizes the friction area with the circular saw blade and reduces the amount of lubricant required during cutting to improve the efficiency of use of the circular saw blade circular guide and circular saw employing the same It is an object to provide a cutting device.

In order to achieve the above object, the circular saw blade contact guide according to a preferred embodiment of the present invention, the circular saw blade contact guide for contacting and pressing the circular saw blade of the circular saw cutting device for cutting a metal plate, the circular saw blade of A friction rib formed on a contact surface of the close guide to be in direct contact with a side surface; And a lubrication space formed between the friction ribs and having an opening to allow lubricating oil to be introduced.

Preferably, the friction ribs are composed of a plurality of friction ribs extending apart from one another side by side.

According to another aspect of the present invention, in the circular saw blade contact guide for contacting and pressing the circular saw blade of the circular saw cutting device for cutting a metal plate, the friction formed on the contact surface of the contact guide in direct contact with the side of the circular saw blade live; And a lubrication space formed between the friction ribs and having an opening to allow lubrication oil to be introduced, wherein the friction ribs are provided with a circular saw blade contact guide having an accommodating portion held therein.

Preferably, the receiving portion is a concave portion formed on its upper surface by bending the friction rib to be convex downward.

More preferably, it further comprises an auxiliary protruding rib that protrudes upward from the end of the friction rib.

The auxiliary protruding rib is also formed to be radially outward with respect to the circular saw blade.

At least one lubricant supply hole connected to the lubrication pipe may be formed in the adhesion guide according to another embodiment of the present invention.

More preferably, a passage is formed in the friction rib so that lubricant flows downward.

According to another embodiment of the present invention, the end of the friction rib is further formed with an auxiliary extension rib extending to be connected to the end of the adjacent friction rib.

According to another aspect of the present invention, in the circular saw blade contact guide for contacting and pressing the circular saw blade of the circular saw cutting device for cutting a metal plate, the friction formed on the contact surface of the contact guide in direct contact with the side of the circular saw blade live; And a lubrication space formed between the friction ribs, wherein the lubrication space is provided with a circular saw blade adhesion guide, the upper portion of which is opened while the lower portion of the lubrication space is held so as to hold and hold lubricant oil.

According to one embodiment of the invention, the friction rib is composed of a plurality of friction ribs extending to be inclined downward toward the center portion.

According to another embodiment of the present invention, the friction rib is composed of a plurality of friction ribs extending side by side in the vertical direction, the lower end of the friction rib is interconnected with adjacent friction ribs.

According to another embodiment of the present invention, the friction rib is formed along the edge of the close guide so that the top is open while the bottom is closed.

Preferably, an intermediate rib is further formed inside the lubrication space formed by the friction rib.

According to another aspect of the invention, a fixed casing; A cover casing installed to be opened and closed to the fixed casing; Circular saw blade is installed to rotate in the casing; A first contact guide installed to be fixed to an inner surface of the fixed casing to contact one side surface of the circular saw blade, and a second contact guide installed to face the first contact guide and contact and press the other side surface of the circular saw blade; ; Biasing means for pressing the second close guide in the direction of the first close guide; And a lubricating oil spraying means for injecting lubricating oil onto the circular saw blade, wherein at least one of the first and second close contact guides is a circular saw cutting device including the circular saw blade close contact guide according to claim 1 to 15. Is provided.

According to the circular saw blade adhesion guide of the present invention and the circular saw cutting device employing the same, the adhesion guide is in contact with the circular saw blade only by the friction ribs, and the lubricant is contained in the space formed between the friction ribs, thereby maximizing lubrication efficiency This can effectively reduce the friction between the close guide and the circular saw blade.

Circular saw blade contact guide according to the invention is provided to the cutting portion of the circular saw cutting device is configured to support the circular saw blade. Circular saw cutting device of the present invention is a device for cutting a metal plate, the basic configuration is as disclosed in the applicant's patent registration No. 0431752, some of the configuration of the cutting device disclosed in the above document is to be referred to as it is in the present specification .

That is, the circular saw cutting device of the present invention includes a table to which the metal sheet is supplied, and a cutting portion for cutting the metal sheet while reciprocating along the guide rail provided on the table.

The cutting unit is to cut the metal plate by a circular saw blade that rotates in response to the power of the drive motor, the detailed configuration is shown in Figures 4 and 5. Here, FIG. 4 shows only the structure of a circular saw blade and a close contact guide simplified, and FIG. 5 is sectional drawing about the principal part of a cut part.

Referring to the drawings, the cutting part of the present invention includes a fixed casing (see 1 in FIG. 1) fixed to a cutting body (not shown), and a cover casing 2 installed to be opened and closed to the fixed casing 1. do. The configurations of the fixed casing 1 and the cover casing 2 are already known, and thus detailed description thereof will be omitted.

In the casing 1, 2, the circular saw blade 100 is installed to be rotatable. That is, the rotary shaft 10 is rotated to receive the power of the drive motor (not shown) is installed to pass through the fixed casing (1), the circular saw blade 100 is coupled to the end of the fixed casing (1).

According to the present invention, both side surfaces of the circular saw blade 100 are supported while being contacted by a pair of close guides 20 and 30. The close contact guide is installed to be fixed to the inner side of the fixed casing (1) is provided to face the first close contact guide 20, the first close contact guide 20 in contact with one side of the circular saw blade (100) Consists of a second close contact guide 30 for pressing and pressing the other side surface of the circular saw blade (100).

The second close contact guide 30 is pressed in one direction, that is, in the direction of the first close guide 20 by a biasing means provided on the cover casing 2 side.

Preferably, the biasing means pressurizes the second contact guide 30 by an elastic member such as a spring 40, and more preferably includes an adjusting screw 42 to appropriately press the pressing force of the spring 40. It is configured to be adjustable, but is not necessarily limited to this configuration.

As a further alternative, the biasing means may be configured to press the contact guide by means of a cylinder and a hydraulic device as shown in FIG. 2 above. Since the configuration of the biasing means is already well known, the detailed description thereof is omitted, although the specific embodiments are exemplified in the present specification, but are not to be construed as being limited thereto, as long as the function of pressing the close guide is achieved. It is to be understood that various configurations of biasing means may be employed.

The configuration of the close guide 20, 30 according to a preferred embodiment of the present invention is shown in more detail in FIG. Referring to the drawings, the contact surface of the close contact guide 20, 30 according to the present invention is a friction rib 22 in direct contact with the side of the circular saw blade 100, and a lubrication space formed between the friction rib (22) 32) is formed.

In the close contact guide 20 according to the present embodiment, the plurality of friction ribs 22 are extended while being spaced apart from each other side by side. Preferably, the width of the friction rib 22 is set smaller than the width of the lubrication space 32 formed therebetween, so as to reduce the friction with the circular saw blade 100 as much as possible. The width and size of the friction ribs 22 and the lubrication space 32 are not limited to specific embodiments of the present invention, and may be set within an appropriate range.

The lubrication space 32 is configured such that the lubricating oil can be introduced into the gap while maintaining the open state even when the close guide 20 is in contact with the circular saw blade 100.

Although not shown in the drawings, the cutting portion is further provided with lubricating oil injection means for injecting lubricating oil to the circular saw blade (100). Since the lubricant injection means is very common and typical, a detailed description thereof will be omitted.

According to the present invention, the friction ribs 22 are preferably in contact with the circular saw blade 100 so as to be in a horizontal state parallel to the horizontal center line (H of FIG. 4) of the circular saw blade 100, but is necessarily limited to this configuration It doesn't happen.

According to the configuration of the present invention, the lubricating oil 200 introduced through the lubrication space 32 while cutting the metal sheet is configured to be held between the friction ribs 22 without being easily escaped.

That is, as shown in Figure 4, the friction ribs 22 of the close contact guide 20 extends in the direction substantially intersecting with the rotation direction of the circular saw blade 100, the lubrication space between the friction ribs 22 The lubricating oil 200 introduced into the 32 is not easily escaped and stays. Accordingly, lubricating oil can penetrate more smoothly between the close guide 20 and the circular saw blade 100, and the friction between the close guide 20 and the circular saw blade 100 can be minimized according to the flow characteristics of the lubricant. have.

Preferably the adhesion guide 20, 30 may be made of cemented carbide, but is not limited to such materials, it should be understood that ceramics or other various materials may be used.

7 and 8 illustrate a configuration of a close contact guide 120 according to another preferred embodiment of the present invention. Here, the same reference numerals as in the previously shown drawings indicate members having the same function.

The close contact guide 120 according to the present embodiment includes a friction rib 122 in direct contact with a side surface of the circular saw blade 100, and a lubrication space 132 formed between the friction ribs 122. Receiving portion 124 is formed in the 122 so that the lubricating oil 200 can be contained.

The accommodating part 124 corresponds to a concave portion formed on the upper surface by bending the friction rib 122 to be convex downward.

Therefore, since the lubricating oil 200 flowing into the lubricating space 132 is held in the receiving portion 124 formed in the friction rib 122, the lubricating oil smoothly flows between the contact guide 120 and the circular saw blade 100. This ensures that the friction between them is minimized.

9A and 10 illustrate a configuration of a close guide 220 according to another preferred embodiment of the present invention.

The close contact guide 220 according to the present exemplary embodiment includes a friction rib 222 and a lubrication space 232 similarly to the close contact guide described with reference to FIGS. 7 and 8, and the lubricating oil 200 is provided on the friction rib 222. ) Is provided with a receiving portion 224 that can hold.

However, the adhesion guide 220 of the present embodiment, unlike the adhesion guide of the above-described embodiment includes an auxiliary protrusion rib 226 protruding upward from the end of the friction rib 222.

The auxiliary protruding rib 226 serves as a barrier that prevents the lubricant 200 contained in the receiving portion 224 from escaping out of the lubrication space 232 when the circular saw blade 100 rotates.

In addition, the auxiliary protruding rib 226 is preferably formed to be located radially outward with respect to the circular saw blade 100, as shown in Figure 10, in this case by the centrifugal force when the circular saw blade 100 rotates Lubricating oil 200 can be effectively prevented from flowing out radially.

According to another preferred embodiment of the present invention, the auxiliary protruding ribs 226 can be further extended to connect to the ends of adjacent friction ribs 22, an example of which is shown in FIG. 9B.

That is, as shown in the figure, at the end of the friction rib 222 'formed with the receiving portion 224' is formed an auxiliary extension rib 226 'extending to be connected to the end of the adjacent friction rib 222'. It is. As a result, a lubrication space 232 'having one end closed is formed between the friction ribs 222'.

Preferably, the auxiliary elongated ribs 226 ′ are also formed radially outward relative to the circular saw blade 100 to prevent the lubricant 200 from escaping radially outwards when the circular saw blade 100 rotates.

An embodiment of another tight guide with one closed lubrication space is shown in FIGS. 11 and 12.

In the close contact guide 320 of the present embodiment, a plurality of friction ribs 322 extended to be inclined downward toward the center so as to contain the lubricant 200 and a lubrication space 332 formed between the friction ribs 322 are formed. It is.

The lubrication space 332 is in an open state at both ends of the close guide 320, while in the center of the lubrication space 332. Therefore, the lubricating oil 200 may flow from both sides of the adhesion guide 320 to be maintained at the center.

In addition, since the lubrication space 332 is open to both sides of the adhesion guide 320, there is no need to distinguish left and right to install the adhesion guide 320, even if the rotation direction of the circular saw blade 100 is set arbitrarily Correspondingly, lubrication can be effectively performed.

According to the invention it is possible to further increase the amount of lubricating oil contained in the tight guide, one of such examples is shown in FIGS. 13 and 14.

Referring to the drawings, the adhesion guide 420 according to the present embodiment includes a plurality of friction ribs 422 extending side by side in the vertical direction, and a lubrication space 432 formed between the friction ribs 422. .

According to this embodiment, the lower end of the friction rib 422 is interconnected with adjacent friction ribs, so that the upper part of the lubrication space 432 is open while the lower part is closed.

According to this configuration, the lubricating oil 200 introduced into the lubrication space 432 through the open upper portion may be held in the lubrication space 432. According to this embodiment, since most of the lubrication space 432 can be filled with the lubricating oil 200, the amount of lubricating oil supplied by the lubricating oil supply means can be reduced, while lubricating efficiency can be maximized.

15 and 16 show an embodiment that can maximize the amount of lubricant 200 that can be held in the close guide 520 shown in FIG.

Referring to the drawings, the friction guide 520 of the present embodiment is formed along the rim friction ribs 522, the upper portion of the friction ribs 522 is open while the lower portion is closed.

Thus, inside the friction rib 522, an open lubrication space 532 is formed, the upper part of which is closed and the lower part of the friction rib 522, and the amount of the lubricating oil 200 contained in the lubricating space 532 is maintained in comparison with the above-described embodiments. It is the maximum.

More preferably, as illustrated in FIGS. 17 and 18, a plurality of intermediate ribs 524 may be further formed on the side of the contact guide 520 ′ inside the closed lubrication space 532. In this case, the rib area of the close guide in contact with the circular saw blade 100 becomes wider and more stable support is possible.

Here, the intermediate rib 524 is formed in the closed lubrication space 532, but at least one side is formed to be spaced apart from the friction rib 522 formed on the rim, the lubricating oil 200 and the friction rib 522 The passage between the intermediate ribs 524 can sufficiently penetrate into the lubrication space 532.

Although not shown in the drawing, the intermediate rib 524 may be formed in various shapes such as a rod shape, a round shape, a polygonal shape, and the number or positions of the ribs 524 may be arbitrarily set appropriately.

19 and 20 show the configuration of the cut portion and the close guide in the circular saw cutting device according to another embodiment of the present invention.

 According to this embodiment, at least one lubricating oil supply hole 50 is formed in the close guide, and is configured to supply lubricating oil by combining a lubricating pipe 60 connected to a separate lubricating oil supply means. The lubricating oil supply hole 50 may be selectively formed in the contact guides 20 'and 30', and the position and number thereof are not limited.

Further, more preferably, at least one passage 71 or 72 is formed in the friction ribs 61 and 62 of the close guide, as shown in FIG. 20, so that the lubricating oil may sequentially flow downward. have.

The position and number of formation of the passages 71 and 72 are also not limited by this embodiment, and may be alternately formed or alternately formed, for example, zigzag on adjacent friction ribs.

Although the preferred embodiments of the present invention have been described with reference to specific drawings, the present invention should not be understood as being limited to these embodiments. The technical idea of the present invention is to simultaneously form a friction rib that performs a contact function with a circular saw blade and a lubrication space for infiltrating and maintaining the lubricant, in a close guide, and various modifications exist within the scope of the technical idea. It should be acknowledged.

In addition, the above-described embodiments do not exist in a separate configuration, respectively, it is too natural that each feature can be selected or combined to form a close guide. For example, at least one friction rib among the friction ribs of the close guide shown in FIG. 6 may be configured to have a receiving portion as shown in FIG. 7. As another alternative, the ribs shown in FIGS. 7-12 may be formed in the rim friction ribs of the close guide shown in FIG. 15.

In addition, according to the present invention, only one of the first contact guide and the second contact guide for supporting the circular saw blade 100 is composed of the contact guide according to the present invention, the other other contact guide is a conventional guide or the aforementioned patent It may be replaced by the sliding support disclosed in 0431752.

Therefore, it is to be understood that the present invention is intended to encompass such variously combined configurations, and the claims herein also use the inclusive term “at least one” to include all such configurations in the scope of rights.

Furthermore, as another alternative, the configuration of the friction ribs, the lubrication space and the receiving portion, etc. according to the present invention may be provided not only on the entire side of the close guide, but also on a part thereof. To this end, the components described in the claims of the present application are for claiming an invention in which such components are provided on at least some of the sides of the tight guide, and do not always require that such components be provided on the whole side of the tight guide. Do not.

Although the present invention will be described in detail with reference to the following drawings, these drawings illustrate preferred embodiments of the present invention, and the technical concept of the present invention is not limited to the drawings and should not be interpreted.

1 is a perspective view showing the configuration of a cutting portion in a conventional circular saw cutting device.

Figure 2 is a cross-sectional view showing the configuration of the cutting portion in a conventional circular saw cutting device.

Figure 3 is a cross-sectional view showing another example of the cutting portion in the conventional circular saw cutting device.

Figure 4 is a view showing a contact state of the contact guide and the circular saw blade according to an embodiment of the present invention.

Figure 5 is a cross-sectional view showing the configuration of the cutting portion in the circular saw cutting device according to an embodiment of the present invention.

6 is a perspective view showing the configuration of a close guide according to an embodiment of the present invention.

Figure 7 is a perspective view showing the configuration of the close guide according to another preferred embodiment of the present invention.

FIG. 8 is a view illustrating a contact state of the close contact guide and the circular saw blade of FIG. 7.

Figure 9a is a perspective view showing the configuration of the close guide according to another preferred embodiment of the present invention.

Figure 9b is a perspective view showing the configuration of the close guide according to another preferred embodiment of the present invention.

FIG. 10 is a view illustrating a contact state between the close contact guide and the circular saw blade of FIG. 9A.

11 is a perspective view showing a configuration of a close guide according to another preferred embodiment of the present invention.

FIG. 12 is a view illustrating a contact state of the close contact guide and the circular saw blade of FIG. 11.

13 is a perspective view showing a configuration of a close guide according to another preferred embodiment of the present invention.

FIG. 14 is a view illustrating a contact state of the close contact guide and the circular saw blade of FIG. 13.

15 is a perspective view showing a configuration of a close contact guide according to another preferred embodiment of the present invention.

FIG. 16 is a view illustrating a contact state of the close contact guide and the circular saw blade of FIG. 15.

17 is a perspective view showing the configuration of a close contact guide according to another preferred embodiment of the present invention.

FIG. 18 is a view illustrating a contact state between the close guide and the circular saw blade of FIG. 17.

19 is a cross-sectional view showing the configuration of a cut in a circular saw cutting device according to another preferred embodiment of the present invention.

20 is a perspective view showing a configuration of a close contact guide according to another embodiment of the present invention.

Claims (16)

delete delete delete In the circular saw blade contact guide for contacting and pressing the circular saw blade of the circular saw cutting device for cutting a metal plate, A friction rib formed on a contact surface of the close guide to be in direct contact with a side surface of the circular saw blade; And And a lubrication space formed between the friction ribs and having an opening to allow lubricating oil to be introduced therein. Circular friction blade guide, characterized in that the friction ribs are formed with a receiving portion that is held by lubricating oil. The method of claim 4, wherein The accommodating part is a circular saw blade contact guide, characterized in that the concave portion is formed in the upper surface by bending the friction ribs convex downward. The method of claim 4, wherein Circular saw blade contact guide, characterized in that it further comprises an auxiliary protruding rib protruding upward from the end of the friction rib. The method of claim 4, wherein Circular saw blade contact guide, characterized in that the end of the friction rib is further formed with an auxiliary extension rib extending to be connected to the end of the adjacent friction rib. The method of claim 4, wherein Circular saw blade contact guide, characterized in that formed at least one lubricant supply hole connected to the lubrication pipe. The method according to any one of claims 4 to 8, The friction ribs are circular saw blade guide, characterized in that the passage is formed so that the lubricant flows downward. In the circular saw blade contact guide for contacting and pressing the circular saw blade of the circular saw cutting device for cutting a metal plate, A friction rib formed on a contact surface of the close guide to be in direct contact with a side surface of the circular saw blade; And A lubrication space formed between the friction ribs; The lubrication space is circular saw blade guide, characterized in that the upper portion is open, while the lower portion is closed so as to hold the lubricating oil. The method of claim 10, The friction ribs are circular saw blade guide, characterized in that composed of a plurality of friction ribs extending to be inclined downward toward the center. The method of claim 10, The friction rib is composed of a plurality of friction ribs extending side by side in the vertical direction, the lower end of the friction rib is circular saw blade guide, characterized in that interconnected with the adjacent friction ribs. The method of claim 10, The friction ribs are circular saw blades, characterized in that formed along the edge of the close contact guide so that the top is open while the bottom is closed. The method of claim 13, Circular saw blade contact guide, characterized in that the intermediate ribs are further formed in the lubrication space formed by the friction ribs. The method of claim 10, Circular saw blade contact guide, characterized in that formed at least one lubricant supply hole connected to the lubrication pipe. Fixed casing; A cover casing installed to be opened and closed to the fixed casing; Circular saw blade is installed to rotate in the casing; A first contact guide installed to be fixed to an inner surface of the fixed casing to contact one side surface of the circular saw blade, and a second contact guide installed to face the first contact guide and contact and press the other side surface of the circular saw blade; ; Biasing means for pressing the second close guide in the direction of the first close guide; And Includes; lubricating oil injection means for injecting lubricating oil to the circular saw blade, At least one of the first and second close contact guide is a circular saw cutting device, characterized in that the circular saw blade contact guide according to any one of claims 4 to 15 described above.

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