WO2021162162A1

WO2021162162A1 - Cutting tool for forging

Info

Publication number: WO2021162162A1
Application number: PCT/KR2020/002476
Authority: WO
Inventors: 홍진태; 황석헌; 김영숙
Original assignee: 홍진태; 황석헌; 김영숙
Priority date: 2020-02-11
Filing date: 2020-02-20
Publication date: 2021-08-19
Also published as: KR20210101783A; TWI753371B; TW202130431A; KR102347378B1

Abstract

The present invention relates to a cutting tool for forging and, more particularly, to a cutting tool in which a cutting blade can be replaced by simply attaching and detaching a fixed block to/from a blade holder, which can secure the quickness, convenience, and reliability of coupling between the blade holder and the cutting blade, and a consistency of a coupling position of the cutting blade, and in which the coupling state and the coupling position of the cutting blade do not change even if physical impact is applied to the cutting blade after the cutting blade is coupled. Accordingly, the present invention may provide a cutting tool for forging comprising: a blade holder having a protrusion formed on one side of a central seating groove, a fixing surface lower than the height of the protrusion that is formed on the other side of the protrusion, and a locking groove formed through the protrusion in the width direction of the protrusion at a predetermined position on the vertical surface of the protrusion; a cutting blade having the same shape as the seating groove of the blade holder, having locking protrusions on both sides integrally formed on the lower side, and supporting surfaces formed at both ends; and a fixed block that is fixed to the fixing surface of the blade holder so that the locking protrusion on one side of the blade body does not deviate upward, wherein a coupling groove is formed in the center of the seating groove of the blade holder such that a coupling protrusion at the center of the bottom of the blade body is connected, and a gripping protrusion formed on the bottom of the fixed block is inserted by forming a gripping groove on the fixing surface of the blade holder.

Description

cutting tool for forging

The present invention relates to a cutting mechanism for forging in which the convenience of blade replacement, the accuracy of the blade coupling and the reliability of maintaining the blade coupling are guaranteed.

The cutting mechanism for forging referred to in the present invention is applied to both the movable cutting mechanism and the fixed cutting mechanism installed in a press device such as a press and used when cutting a round bar to a predetermined length. In general, the cutting mechanism is divided into a knife stem and a blade. In such a cutting mechanism, the blade is inevitably worn (damaged, etc.) when the blade is mounted on the pressing device and used repeatedly. In this case, replacement of the blade is required. Currently, the entire cutting mechanism is replaced from the pressurizing device.

The above problem was accompanied by an increase in the cost of maintenance and management of the cutting tool, as well as a long time required for replacement, and the efficiency of the round bar cutting operation was remarkably low. In addition, when the entire cutting mechanism is replaced, there is a problem in that it is necessary to adjust the mounting alignment of the cutting mechanism every time it is replaced.

In order to solve these problems, a cutting mechanism that separates the holder and the knife is presented in Korean Patent Registration No. 0807072 (hereinafter referred to as 'prior art').

The above prior art can solve the conventional problem of having to replace the entire cutting mechanism due to problems such as blades. However, since the fixing of the blade to the blade depends only on the fasteners on both sides of the blade, the stability of the fixing is not guaranteed, and the problem that the fixing position of the blade is not always the same was found every time the blade is replaced. Furthermore, in the prior art, when the cutting mechanism is repeatedly used, there is a significant concern that the fixing force of the blade fastener is not maintained as in the first, and if the fixing force is changed, a problem of defective cutting of the round bar is inevitably generated.

[Prior art literature]

(KR) Patent Publication No. 10-0807072

The present invention was invented to solve the problems appearing in the prior art, and an object of the present invention is to accurately and firmly connect and fix the blade to the knife stem, and the combined state and fixed position even in physical impact or repeated use This is to ensure that it does not change or flow.

Another object of the present invention is to enable convenient operation for coupling, firm fixation and separation of the blade.

In the cutting mechanism for forging according to the present invention, a protrusion is formed on one side of the central seating groove, a fixing surface lower than the height of the protrusion is formed on the other side of the protrusion, and a locking groove is formed at a fixed position on the vertical surface of the protrusion in the width direction of the protrusion. A knife blade formed through the; a blade having the same shape as the seating groove of the knife, the blade body having locking protrusions on both sides is integrally formed on the lower side, and a support surface is formed at both ends; It is characterized in that it comprises a fixing block that is fixed to the fixing surface of the knife blade body to prevent the locking projection on one side from being separated in the upward direction.

On the other hand, it is possible to form a coupling groove in the center of the seating groove of the knife blade so that the coupling protrusion in the center of the bottom surface of the blade body is connected. In addition, by forming a gripping groove on the fixing surface of the knife, the gripping protrusion formed on the bottom surface of the fixing block can be inserted.

The present invention has the effect of being able to replace the blade with the blade mounted on the pressing device when the blade needs to be replaced because the fixing and disassembling of the blade can be achieved only by coupling and separating the fixing block to the blade.

Since the present invention completes the coupling of the blade and the blade by the connection of the groove and the protrusion, the speed and convenience of the coupling can be secured, and further, the coupling position of the blade can be accurately and identically every time the blade is combined or exchanged. there is an effect

In the present invention, when the blade is coupled to the blade, the steps on both sides of the blade are caught in the locking groove and the fixing block to prevent upward deviation and flow of the blade, and the front and rear flow of the blade is prevented due to the connection of the groove and the protrusion. Even if a physical impact (repeated round bar cutting, etc.) is applied to the blade after bonding, it has the effect of firmly preventing the blade from separating and flowing. The above effect is accompanied by the effect of guaranteeing the reliability of the round bar cutting operation and the safety of the use of the blade.

1 is an exploded stereoscopic view of the present invention;

Figure 2 is a three-dimensional view of the assembled state of Figure 1;

3 is a front view of the present invention;

Figure 4 (A) is an exemplary side cross-sectional view in which the fixing block is coupled to the knife

(B) is another exemplary view of (A).

Figure 5 is an exemplary view of a moving cutting mechanism in a pair with Figure 1;

6 is another exemplary view of FIG. 5

Figure 7 (A) is a front view of the fixed cutting mechanism in one pair with Figure 6

(B) is a plan view of (A).

The detailed description for solving the problem according to the present invention with the accompanying drawings in detail as follows. However, the accompanying drawings may be exaggerated, omitted, or schematically illustrated for convenience of description of the main parts. Terms and names used in the description may be implicitly determined by the shape, action, role, etc. of the configuration rather than the dictionary meaning. In addition, the specific structure, shape, shape, arrangement, size, etc. of the configuration that can be identified through the drawings, the operation of the configuration that can be inferred through the drawings, and the effect thereof may also obscure the subject, so detailed description will be omitted. can

The cutting mechanism for forging according to the present invention consists of a knife blade 10 , a blade 20 and a fixed block 30 . The above configuration is equally applied to the fixed cutting mechanism as shown in FIGS. 1 and 7 as well as the moving cutting mechanism as shown in FIGS. 5 and 6 . The fixed cutting mechanism of FIG. 1 is installed in the pressing device as a pair with the moving cutting mechanism of FIG. 5, and the bi-directional cutting mechanism of FIG. 6 is installed in the pressing device as a pair with the fixed cutting mechanism of FIG. 7 .

The knife blade 10 has protrusions 13 and a fixing surface 14 formed on both sides of the seating groove 11 in which the coupling groove 12 is formed in the center, and the height of the fixing surface 14 is the same as the projection ( 13) is formed at a position lower than the height of A locking groove 132 positioned on the same line as the fixing surface 14 is formed in the protrusion 13, a vertical surface 131 is formed on the inner side, and a discharge groove 133 when cutting the round bar on the inner rear of the upper surface. ) is formed. Here, the protrusion 13 is formed to have the same width as the width of the knife 10 , the locking groove 132 is formed penetrating in the width direction of the protrusion 13 , and the discharge groove 133 is the locking groove 132 . is connected with

The blade 20 is the same as the shape of the seating groove 11 of the blade 10, and a coupling protrusion 231 coupled to the coupling groove 12 is formed in the center of the bottom surface, and a locking protrusion ( 232) (233) is formed a blade body 23 is formed on the lower side. On the upper side of the blade body 23, the blade 20 having the

support surfaces

21 and 22 formed at both ends is integrally formed.

The fixing block 30 is formed at a height equal to the difference between the protrusion 13 and the fixing surface 14 of the knife 10, and the bottom surface is in close contact with the fixing surface 14 and is fixed with a bolt 40 or the like. do.

The shape of the seating groove 11 and the blade body 23 of the knife stem 10 from above is a semicircle, and a gripping groove 141 is formed in the center of the fixing surface 14 to form a gripping protrusion on the bottom surface of the fixing block 30 ( 31) is connected, and the gripping protrusion 31 is formed to the inside of the tip 32 of the fixing block 30,

When explaining the organic coupling relationship of the blade 10, the blade 20 and the fixing block 30 having the above configuration, the blade body 23 is seated in the seating groove 11 of the blade body 10, the blade body (23) The coupling protrusion 231 in the center of the bottom surface is connected to the coupling groove 12 of the seating groove 11 . At the same time, the locking protrusion 232 on one side of the blade body 23 is inserted into the locking groove 132 formed in the protrusion 13 of the knife blade 10, and the locking projection 233 of the other side is in an exposed state. The coupling position of the blade 20 from above is achieved by adhering one side of the support surface 21 to the vertical surface 131 of the protrusion 13 . When the coupling of the blade 20 to the blade 10 is completed, the fixing block 30 is coupled to the fixing surface 14 and then fixed to the blade 10 with a bolt 40 to fix the blade 20. have. At this time, the counter-locking projection 233 of the blade body 23 is introduced into the bottom surface of the fixing block 30 and is in close contact with the bottom surface, and the side surface 33 of the fixing block 30 is the counterpart support surface of the blade 20 ( 22) is pressed in the direction of the protrusion 13, so that the blade 20 is firmly fixed between the protrusion 13 and the fixing block 30.

And the gripping protrusion 31 of the fixing block 30 is formed in a narrow top and wide bottom, and the gripping groove 141 of the knife stem 10 is also formed the same as the gripping projection 31 above, so that the gripping protrusion 31 is formed. is connected to the gripping groove 141, even if the bolt 40 is damaged or naturally loosened and the fastening force of the bolt 40 is released, the fixing block 30 is prevented from abruptly departing in the upward direction. (30) There is an action that can prevent a safety accident due to the deviation.

Next, the discharge groove 133 formed in the protrusion 13 of the knife 10 is from the knife 10 with the action of discharging foreign substances and cutting oil, etc. generated during the process of pre-, post-processing or cutting of the round bar. When the blade 20 is separated, it is possible to put a tool, etc., and it also serves to facilitate the separation of the blade 20 .

When each configuration is combined in this way, the coupling groove 12 in the center of the bottom surface of the blade body 23 is connected to the coupling groove 12 of the knife stem 10 so that the blade body 23 and the integrated blade 20 are front and back. Deviation in the direction is firmly prevented. And since the locking

projections

232 and 233 on both sides of the blade body 23 are caught by the locking groove 132 and the fixing block 30 of the protrusion 13, respectively, the upward deviation of the blade 20 is also prevented. In this state, if replacement of the blade 20 is necessary due to repetitive round bar cutting work, etc., the blade 20 can be quickly and conveniently disassembled by removing only the fixing block 30 while the blade 10 is mounted on the pressurizing device. can do.

Therefore, the present invention is the coupling position of the blade 20 through the close contact of one side of the support surface 21 of the blade 20 with respect to the vertical surface 131 of the protrusion 13 and the connection of the coupling protrusion 231 and the coupling groove 12 . There is an action that can be set conveniently. In addition, by using the organic coupling relationship of the coupling protrusion 231, coupling groove 12, locking

protrusion

232, 233, and fixing block 30, the coupling state of the blade 20 to the knife stem 10 is firm and It has the ability to keep it strong. And there is an action that can promote the replacement of the blade 20 only by fixing and separating the fixing block (30). That is, the cutting mechanism for forging as in the present invention must ensure the action that there is no concern about the normal position and deviation or flow of the blade 20 with respect to the knife stem 10 for precise cutting of the round bar, the present invention conforms to this It will be called an invention.

On the other hand, the present invention extends the rear of the knife 10 so that the support plate 50 is formed. Therefore, it is possible to prevent the flow of the round bar during the round bar cutting operation, so that the round bar can be cut precisely.

In order to help the understanding of the principle of the configuration to be pursued in the present invention and the principle of the present invention, the present invention described above is a drawing of the configuration of the present invention and specific components included in the configuration, and has been described based on the drawings. And the effect of the part shown in the drawings but not described will be sufficiently inferred through the drawings. Accordingly, those skilled in the art will be able to apply various modifications and changes based on the contents mentioned in the present invention.

[Explanation of code]

10: knife bar 11: seating groove

12: coupling groove 13: protrusion

131: vertical surface 132: locking groove

133: discharge groove 14: fixed surface

141: grip groove 20: blade

21, 22: support surface 23: blade body

231: coupling projection 232, 233: locking projection

30: fixed block 31: gripping projection

32: tip 33: side

40: bolt 50: support plate

51: Anchi Home

Claims

A protrusion 13 is formed on one side of the center seating groove 11 , a fixing surface 14 lower than the height of the protrusion 13 is formed on the other side of the protrusion 13 , and a vertical surface 131 of the protrusion 13 . ) a knife blade 10 through which a locking groove 132 is formed at a predetermined position in the width direction of the protrusion 13;

The blade body 23 having the locking projections 232 and 233 on both sides is integrally formed on the lower side, and the support surfaces 21 ( 22) and the blade 20 is formed;

Cutting mechanism for forging, characterized in that it includes a fixing block 30 fixed to the fixing surface 14 of the knife blade 10 so that the one side locking protrusion 233 of the blade body 23 is not separated in the upward direction. .
According to claim 1,

Cutting mechanism for forging, characterized in that by forming a coupling groove (12) in the center of the seating groove (11) of the blade (10) so that the coupling protrusion (231) in the center of the bottom surface of the blade body (21) is connected.
According to claim 1,

A cutting mechanism for forging, characterized in that by forming a gripping groove (141) on the fixing surface (14) of the knife (10) to insert the gripping protrusion (31) formed on the bottom surface of the fixing block (30).