KR100692979B1 - Pug blade of brick molding machine - Google Patents

Abstract

A material mixing pug blade of a pug mill is provided to reduce the exchanging time and cost by exchanging only an upper split blade if the upper split blade intensively frictionizing with materials is severely worn out. The material mixing pug blade(2) of a pug mill is composed of plural support shafts(5) detachably installed to a rotary shaft rotating in a mixing part of the pug mill and independently separated at a predetermined gap in a spiral direction and plural split blades(2a) assembled to the upper parts of each support shaft by combining bolts and nuts. The section of the pug blade has V or inverse-V shaped recessed and protruded faces(23,24) to engage assembling surfaces of plural split blades coming into contact with each other in assembling the split blades to the support shaft.

Description

Pug blade of brick molding machine

1 is an installation state of the raw material kneading pug braid for explaining the present invention.

Figure 2 is a pug braid assembly state of one embodiment of the present invention.

Figure 3 is an exploded perspective view of the pug braid of the same embodiment.

4 is a cross-sectional view taken along the line A-A of FIG.

5 is a cross-sectional view taken along the line B-B in FIG.

Figure 6 is a pug braid assembly state of another embodiment of the present invention.

Figure 7 is an exploded perspective view of the pug braid of the same embodiment.

8 is a cross-sectional view taken along the line C-C in FIG.

9 is a cross-sectional view taken along the line D-D of FIG. 6.

Figure 10 is a pug braid assembly state of another embodiment of the present invention.

11 is a cross-sectional view taken along the line E-E of FIG.

12 and 13 are assembled state of the pug braid of the prior art.

※ Explanation of code for main part of drawing

1: basic body 10: kneading unit

11: vacuum part 12: extrusion part

13: discharge mouse 14: rotation axis

2,3,4: Pug braid 2a, 3a, 4a: Upper split braid

2b, 3b, 4c: Lower split blade 4b: Middle split blade

5,6,7: support shaft

The present invention relates to a pug blade (Pug blade) to be transported while kneading raw materials such as clay or loess is mounted to the kneading portion of the refining machine for manufacturing bricks and sidewalk blocks, and more specifically, wear a pug blade It is a means of dividing and forming into plural parts by dividing into fast-moving part and slow-wearing part and replacing only the part that progressed quickly while kneading raw materials of products such as bricks with a refining machine. It relates to a split prefabricated pug braid that can be used to reduce the replacement cost of the pug braid while continuing to use it.

In general, the scouring machine for manufacturing bricks and sidewalk blocks is a kneading unit for mixing and feeding the raw materials, a vacuum unit for extracting air from the kneading raw material discharged from the kneading unit, and a forced raw material for conveying the coarse dough material. An extrusion part and a discharge mouse which discharges the dough raw material discharged | emitted from an extrusion part with an extrusion molding mold are provided.

Usually, the kneading unit of the refining machine is equipped with a plurality of pug blades for mixing and kneading the raw material on the rotating shaft, wherein the pug blades are assembled in a spiral direction on the rotating shaft of the kneading unit in a state in which they are assembled in independent structures. The pug braids are installed to be inclined at an angle with respect to the rotational direction of the rotation shaft because the pug blades have to be kneaded and pushed out when the rotation shaft rotates.

Conventionally, there are several types of pug braids that are used in the kneading unit of a refining machine. Among them, those shown in FIGS. 12 and 13 are used as structural features.

The pug braid 200 illustrated in FIG. 12 has a structure in which the lower portion 212 is assembled to the upper portion 211 of the support shaft 210 fixed to the assembly hole 110 of the rotation shaft 100 by a predetermined depth. The front end 201 of the pug braid 200 is formed in the shape of an ax blade, the rear end 202 is formed in a thick thickness, and the upper end 203 is a front side of the front end 201. It is formed in the shape which protrudes toward. In addition, the support shaft 210 supports the bolt 205 at the upper side of the rear end 202 in the state in which the upper end 211 of the support shaft 210 is inserted into the assembly hole 204 formed to penetrate up and down in the rear end 202. Screwed to the upper end of the upper portion 211 of the) is configured to couple the pug braid 200 to the support shaft 210.

The pug braid 300 shown in FIG. 13 is connected to the screwing of the bolt and nut to the upper portion 311 of the support shaft 310 to which the lower portion 312 is fitted and fixed to the assembly hole 110 of the rotating shaft 100. The front end 301 of the pug braid 300 is formed in the shape of an ax blade and has a thickness gradually thickening toward the rear end 302, the upper end 303 is the front end 301 It is formed in a shape protruding sharply toward the front in the extended state, and the plurality of bolts fixedly attached to the rear end 302 is passed through the upper portion 311 of the support shaft 310 to the nut The structure is fastened by

However, since the pug blades 200 and 300 of the prior art as described above are all formed in a single body, the upper portions of the shears 201 and 301 which exhibit the most friction action with the raw materials during the kneading of the raw materials in the kneading part of the refining machine. A phenomenon in which the upper ends 203 and 303 wear out quickly (see hatched portions in FIGS. 12 and 13) appears, and the kneading operation of the raw materials is not well performed when the upper portions 203 and 303 are severely worn out due to this phenomenon. Since the transfer operation is also not performed properly, if the upper part and the upper part of the front end of the pug braid (200,300) is badly worn, the lower part of the front end should be replaced, although the entire pug braid should be replaced, but the pug braid is replaced. Costly problem and also replaces worn pug braids If you want to replace the pug braid must stop the refining machine, collect all the raw materials in the kneading unit, and then disassemble the support shafts 210 and 310 assembled to the rotary shaft 100. At this time, it takes a lot of time to remove the support shaft from the rotary shaft. The biggest problem has been pointed out that the productivity of the product is reduced due to the excessive labor and manpower, and such problems are immediately reflected in the production cost of bricks and sidewalk blocks, resulting in higher production costs. And it will have a big impact on the price competitiveness of the press block products.

The present invention has been proposed in order to solve the problems described in the prior art as described above, the pug braid is divided into parts that are not worn well and parts that are formed by forming and then kneading the reinforcing machine as a means of assembling the assembly When each pug braid attached to the rotating shaft of the negative part is kneaded so badly that the kneading and conveying operation of the raw material is not performed smoothly, the worn part without replacing the entire pug braid without replacing the whole pug braid is worn. It can be used to replace the pug braid, thereby reducing the cost of replacing the pug braid and reducing the manpower and time required to replace worn parts of the pug braid. To increase It is the invention aims.

The present invention as a means for achieving the above object,

Each structure is independent on the rotating shaft that rotates inside the kneading unit of the refining machine, and is assembled by fastening bolts and nuts on the upper portions of each of the plurality of supporting shafts detachably installed at a predetermined interval in the spiral direction. In the pug braid installed in,

The pug braid is formed of a plurality of divided braids are divided into a plurality of divided braids are assembled in the assembling order on the upper portion of the support shaft, the assembling surfaces to be in contact with each other when the respective divided braids are assembled to the support shaft Characterized in that it is formed of the concave surface and the protrusion surface to be assembled,

The concave indentation surface and the protruding surface of the plurality of divided braids assembled in engagement with each other are characterized in that the cross section is formed in a "∧" shape or a "∨" shape.

In addition, the grooves for forming a space between the pointed portions of the protruding surface is formed at a portion where both inclined surfaces of the concave surface assembled in the state engaged with the protruding surface when the plurality of divided braids are assembled. It is characterized by.

Each embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is an installation state diagram of the raw material kneading pug braid for explaining the present invention, Figure 2 is a pug braid assembly state diagram of one embodiment of the present invention, Figure 3 is an exploded perspective view of the pug braid of the same embodiment, Figure 4 2 is a cross-sectional view taken along line AA, FIG. 5 is a cross-sectional view taken along line BB of FIG. 2, FIG. 6 is an assembled view of a pug braid according to another embodiment of the present invention, FIG. 7 is an exploded perspective view of a pug braid according to the same embodiment, and FIG. 8 is FIG. 9 is a sectional view taken along line DD of FIG. 6, FIG. 10 is a sectional view of the pug braid assembly according to another embodiment of the present invention, and FIG. 11 is a sectional view taken along line EE of FIG.

In the drawing, reference numeral 1 denotes a refining main body, and on one side of the refining main body 1, a kneading part 10 for conveying while mixing raw materials such as clay or ocher, and a dough raw material conveyed from the kneading part. A vacuum unit 11 for extracting air and an extrusion unit 12 for forcibly transferring the kneaded raw material through the vacuum unit are provided, and an ejection mouse 13 to which an extrusion molding mold is mounted at the discharge end of the extrusion unit. ) Is assembled and installed.

Inside the kneading unit 10 is provided with a rotating shaft 14 for receiving a rotational force from the drive unit installed in the drill body (1) to perform a rotation operation, each assembled in a separate structure to the rotating shaft (14) A plurality of pug braids are continuously installed in a spiral direction, spaced apart at regular intervals, and each of the pug braids is kneaded with mixing kneading material as the rotating shaft 15 rotates toward the vacuum part 11. It is installed to be inclined at a predetermined angle with respect to the axial direction of the rotary shaft 14 so as to simultaneously carry out the feeding operation.

The pug braid is divided into various types according to structural features for kneading and installing the rotating shaft 14, and structural features for kneading the raw materials. In the present invention, the pug braid is divided and illustrated according to the structural features of the pug braid. Each pug braid shown in the drawings will be described with reference to 2, 3, 4.

The pug braid 2 of the embodiment shown in FIGS. 2 to 5 is made of two upper and lower parts, and the divided upper and lower divided blades 2a and 2b are installed in the support shaft 5 in the assembling order. do.

"자형으로 절곡 형성되어 회전축(14)에서 돌출되는 상부(51)와 회전축(14)의 조립공(14a)에 끼워진 상태로 고정되는 하부(52)로 구분되며, 상기한 하부(52)의 단부에는 하향으로 갈수록 외경이 점차로 작아지는 테이퍼부(53)가 형성되어 있으며, 상기의 테이퍼부(53)에는 일측이 절개된 확개관(54)이 일부만 끼워진 상태로 가조립되어 있고, 또한 상기한 테이퍼부(53)에 형성된 암나사공에 나사체결되는 체결볼트(55)에는 와샤(56)가 끼워져 상기한 확개관(54)을 지지하는 구조로 되어 있는바, 이와 같은 지지축(5)은 테이퍼부(53)에 확개관(54)과 와샤(56) 및 체결볼트(55)가 가조립된 하부(52)를 회전축(14)의 조립공 (14a)에 삽입시킨 다음 체결볼트(55)를 나사조임하게 되면 확개관(54)이 테이퍼부(53)에서 외경이 점차로 커지는 쪽으로 이동됨에 따라 확장되면서 조립공(14a) 내면에 고정되므로서 상기한 하부(52)는 회전축(14)의 조립공(14a)에 견고하고 고정 설치되는 것이며, 상기 지지축(5)의 상부(51)는 양측이 절삭되어 단면상으로 형성되어 있고 상단에는 체결볼트(57)가 나사조립되는 암나사공(58)이 형성되어 있으며, 상기한 체결볼트(57)에는 와샤(59)가 끼워진다.The support shaft 5 is approximately "

"Bending is formed in a shape and is divided into an upper portion 51 protruding from the rotating shaft 14 and the lower portion 52 fixed in the fitted state in the assembly hole 14a of the rotating shaft 14, the end of the lower portion 52 A tapered portion 53 is formed in which the outer diameter gradually decreases downward, and the tapered portion 53 is temporarily assembled in a state where only a part of the extension pipe 54 cut in one side is fitted, and the tapered portion ( 53 is a structure in which a washer 56 is fitted to the fastening bolt 55 screwed to the female threaded hole formed in the female threaded hole to support the expansion pipe 54. The support shaft 5 is tapered. The lower portion 52 of which the expansion pipe 54, washer 56, and fastening bolt 55 are temporarily assembled into the assembly hole 14a of the rotary shaft 14, and then tightens the fastening bolt 55, The opening 54 is expanded as the outer diameter is gradually increased in the tapered portion 53, and thus in the assembling hole 14a. The lower part 52 is fixed to the surface and is firmly fixed to the assembly hole 14a of the rotating shaft 14, and the upper part 51 of the support shaft 5 is cut in both sides and is formed in cross section. The upper end is formed with a female threaded hole 58, the fastening bolt 57 is screwed, the washer 59 is fitted to the fastening bolt 57.

And at the rear end of each of the upper and lower divided blades (2a) (2b) is formed a long hole-shaped assembly holes (21) (42) that can be fitted so as not to rotate in the upper portion 51 of the support shaft (4) In addition, the assembling surface of the lower end of the upper divided blade (2a) is formed of a concave indentation surface 23 concave in the shape of "∧", the assembling surface of the upper end of the lower divided blade (2b) and the indentation surface (23) described above. It is formed of a protruding surface 24 protruding in a "∧" shape to be assembled in an engaged state.

In the middle of the concave indentation surface 23 formed at the lower end of the upper divided braid 2a, that is, the portion where both inclined surfaces meet, a space between the pointed portion of the protruding surface 24 formed at the upper end of the lower divided braid 2b. The recess 23a is formed to form the recess 23a. The recess 23a is a recessed surface 23 and a protrusion 24 which are assembled in engagement with each other when assembling the upper and lower divided blades 2a and 2b. ) The pointed portions of the protruding surface 24 are formed smoothly and unevenly by accommodating the remaining molding sand and the like so that the urinary indentation surface 23 and the protruding surface 24 are precisely assembled. Even if it is, the urging indentation surface 23 and the protruding surface 24 are shown to be in close contact with each other.

The upper end portion 25 protruding forward from the upper divided blade 2a is formed in a wide width, while the front end portion 26 of the lower divided blade 2b is formed in the shape of an ax blade.

The pug braid 2 as described above is assembled to the upper portion 51 of the support shaft 4 in which the lower portion 52 is fixed to the assembly hole 14a of the rotating shaft 14, as shown in FIG. The lower divided braid 2b is first assembled to the upper part 51 of 5), and then the upper divided braid 2a is assembled. The upper divided braid is placed on the protruding surface 24 of the upper end of the lower divided braid 2b. 2a) is assembled with the concave indentation surface 23 engaged with the protruding surface 24 by its own weight. Thus, after assembling the upper divided blade 2a on the lower divided blade 2b, the upper part is assembled. When the fastening bolt 57 is screwed into the female threaded hole 58 formed on the upper end 51 of the support shaft while the washer 59 is positioned at the upper end of the assembling hole 21 of the split blade 2a, The divided blades 2a and 2b are firmly assembled to the upper portion 51 of the support shaft 5.

As described above, the pug braid 2 assembled to the support shaft 5 is transported while kneading the raw materials while rotating the inside of the kneading unit 10 as the rotary shaft 14 rotates. Since the upper end portion 25 protruding forward while forming a wide width in the upper blade 2a is kneaded with the action of inverting and scraping the raw material, the upper end portion 25 has a concentrated friction action with the raw material. As a result, the wear phenomenon appears quickly at the upper end portion 25 of the upper divided blade 2a, while the wear phenomenon occurs very slowly in the lower divided blade 2b. Therefore, the upper divided braid (2a) in the process of performing the operation of assembling and transporting the pug braid (2) to the support shaft (14) by inverting while scraping the raw material injected into the kneading unit (10). When the upper end portion 25 of the wearer is worn to the extent that the operation of kneading the raw material is not worn, the fastening bolt 57 is unscrewed without replacing the entire pug braid as in the prior art, so that only the upper split blade 2a supports the support shaft 5. The lower divided blade 2b can be used continuously while the upper divided blade 2b is removed from the upper portion 51 and replaced with a new one, and the lower divided blade 2b is replaced at least five times each time the upper divided blade 2a is replaced. Only one replacement will reduce the cost of replacing the pug braid.

The pug braid of the embodiment shown in FIGS. 6 to 9 is denoted by reference numeral 3.

The pug braid (3) is also divided into two upper and lower parts as in the above-described embodiment, the upper and lower divided blades (3a) (3b) is the support shaft 6 is fixed to the rotating shaft (14) The upper 61 of the assembly is separately assembled and installed according to the assembly order.

"자형으로 절곡 형성되어 회전축(14)에서 돌출되는 상부(61)와 회전축(14)의 조립공(14a)에 고정되는 하부(62)로 구분되며, 상기한 하부(62)의 단부에는 하향으로 갈수록 외경이 점차로 작아지는 테이퍼부(63)가 형성되어 있으며, 상기의 테이퍼부(63)에는 일측이 절개된 확개관(64)이 일부만 끼워진 상태로 가조립되어 있고, 또한 상기한 테이퍼부(63)에 형성된 암나사공에 나사체결되는 체결볼트(65)에는 와샤(66)가 끼워져 상기한 확개관(64)을 지지하는 구조로 되어 있는바, 이와 같은 지지축(6)은 테이퍼부(63)에 확개관(64)과 와 샤(66) 및 체결볼트(65)가 가조립된 상태에서 하부(62)를 회전축(14)의 조립공(14a)에 삽입시킨 다음 체결볼트(65)를 나사조임하게 되면 확개관(64)이 테이퍼부(63)에서 외경이 점차로 커지는 쪽으로 이동됨에 따라 확장되면서 조립공(14a) 내면을 압착하는 작동에 의해 고정되므로서 상기한 하부(62)는 회전축(14)의 조립공(14a)에 견고하고 고정 설치되는 것이며, 상기 지지축(6)의 상부(61)에는 일정간격으로 복수개의 조립공(67)이 형성되어 있다.The support shaft 6 in the above is approximately "

"Bented in a shape and divided into an upper portion 61 protruding from the rotary shaft 14 and a lower portion 62 fixed to the assembly hole 14a of the rotary shaft 14, the lower portion of the lower portion 62 toward the end A taper portion 63 is formed which gradually decreases in outer diameter. The taper portion 63 is temporarily assembled in a state where only a part of the extension pipe 64 cut in one side is fitted, and the taper portion 63 is further assembled. A washer 66 is fitted to the fastening bolt 65 screwed into the formed female threaded hole to support the expansion pipe 64. The support shaft 6 is extended to the tapered portion 63. When the opening 64, the washer 66 and the fastening bolt 65 are temporarily assembled, the lower part 62 is inserted into the assembly hole 14a of the rotary shaft 14, and then the fastening bolt 65 is screwed in. The opening 64 expands as the outer diameter is gradually increased in the tapered portion 63, and the inner surface of the assembly hole 14a is expanded. The lower portion 62 is fixed and fixed to the assembly hole 14a of the rotary shaft 14 by being fixed by the crimping operation, and the plurality of assembly holes are arranged at a predetermined interval on the upper portion 61 of the support shaft 6. (67) is formed.

The pug braid 3 has an arc shape toward the inside to be assembled in the surface contact state on the upper end 61 of the support shaft 6 at the rear end of each of the divided upper and lower divided braids 3a and 3b. Arcs 31 and 32 concave inwardly are formed, and each of the arcs 31 and 32 is formed in a state in which one or more fastening bolts 33 are formed to protrude. The head portion 33 is embedded in each of the arc portions 31 and 32, and the screw portion is fixed in a protruding structure.

The assembled surface of the upper end of the lower divided blade 3b is formed of a protruding surface 34 having a cross-sectional shape "∧", the front end surface 35 is formed in a cross-sectional shape, the upper divided blade 3a ) Assembling surface of the lower end is formed as a concave indentation surface 36 having a cross-section "∧" shape is assembled in a state of engaging with the protruding surface 34 of the upper end of the lower divided blade (3b), the indentation surface (36) Grooves 36a are also formed in the middle portion where both inclined surfaces of the cross section meet.

The cover surface 37a formed on the rear surface of the front end portion 37 of the upper divided blade 3a is formed in a cross-sectional shape so as to be in close contact with the front surface 35 of the lower divided blade 3b. The front end portion 37 of the upper divided blade 3a is formed in the shape of an ax blade so that the cover surface 37a on the rear surface thereof may cover all of the front end surfaces 35 of the lower divided blade 3b. It is formed long downward.

On the other hand, each of the upper and lower divided blades (3a) (3b) formed as described above, each of the fastening bolts 33 fixed to their rear end to the assembly hole 67 formed on the upper portion 61 of the support shaft 6 Each fitting is then assembled into a structure that is screwed into the nut (39).

The pug braid 3 of the embodiment is assembled to the support shaft 6 installed on the rotary shaft 14 of the kneading part 10 as shown in FIG. 6, but first, the arc surface 32 of the lower divided blade 3b is formed. Fastening bolts 33 protruding into the fitting holes 67 formed in the upper portion 61 of the support shaft 6 and screwed with nuts 39, and then the recessed surface 36 of the upper divided blade 3a. The fastening bolts 33 protruding from the arc-shaped surface 31 while being in close contact with the protruding surface 34 of the lower divided blade 3b are inserted into the assembling holes 67 formed on the upper side of the upper support shaft 61, and the nut 39 Are assembled in the order of assembly.

The pug braid 3 assembled to the support shaft 6 as described above is rotated as the rotary shaft 14 rotates to simultaneously feed and kneading the raw material, wherein the upper divided blade 3a of the pug braid 3 is rotated. While the friction action between the upper end portion of the front end portion and the front end portion 37 is kneaded intensively, the frictional action appears very weakly in the lower divided blade 3b. Therefore, while the pug braid 3 divided into upper and lower divided braids 3a and 3b is assembled to the support shaft 6 and used for a period of time, the upper divided braid 3a is worn out enough to be replaced. If the lower split braid 3b is less wearable and can be used continuously, the lower split braid 3b does not replace the entire pug braid 3 but replaces only the severely worn upper split braid 3a. As described above, every time the upper divided blade 3a is replaced by five or more times, it is replaced by about one time.

The pug braids of the embodiment shown in FIG. 10 and FIG. 11 are denoted by the numeral 4.

The pug braid 4 of the above embodiment is manufactured by dividing the upper, middle, and lower parts into three, and the upper, middle, and lower divided blades 4a, 4b, and 4c formed into three parts are respectively supported by the support shaft 7 according to the assembling order. Is assembled and installed on.

Each of the divided blades 4a, 4b, and 4c may be assembled or assembled into a structure (see FIG. 10) that is prefabricated on top of the support shaft 7 as in the embodiment shown in FIGS. 2 to 5. 6 to 9 may be assembled into a structure attached to the upper portion of the support shaft (7).

Therefore, in the above embodiment, the structure for assembling the pug braid 4 to the support shaft 7 will be omitted, and the assembly structure of the three divided upper, middle and lower divided blades 4a, 4b, and 4c will be omitted. I will explain only.

The lower end of the upper divided blade 4a is formed of a concave indentation surface 41 having a “∧” -shaped cross section, and a recess 41a is formed in an intermediate portion where both inclined surfaces meet, and the intermediate divided braid 4b described above. ), The upper and lower ends are formed of protruding surfaces 42 and 43 which protrude upward and downward to have a cross-section of "∧" shape and "∨" shape, and the upper end of the lower divided blade 4c. Is formed as a concave indentation surface 44 having a cross-sectional shape of " ∨ ", and a concave groove 44a is formed at an intermediate portion where both inclined surfaces meet.

The upper, middle, and lower divided blades 4a, 4b, and 4c configured as described above are assembled and installed on the support shaft 7 in order according to the assembly sequence as shown in the cross-section of the coupling state shown in FIG. 11. The pug braid 4 also has the most frictional action with the raw material when the raw material is kneaded, so that the upper divided braid 4a wears the fastest, and the middle divided braid 4b is next. And wear in the order of the lower divided blade 4c appears.

Therefore, the replacement timing of each divided braid is the shortest upper divided blade 4a and the lower divided blade 4c is the longest. For example, each time the upper divided blade 4a, which is worn out most rapidly, is replaced two or four times during the kneading of raw materials, the intermediate divided blade 4b is replaced once, and the intermediate divided blade 4b is replaced with two to four times. The lower divided braid 4c can be described as being replaced once every four replacements. Thus, the upper divided braid 4a, which wears quickly in using the pug braid 4, is severely worn. When the pug braid is replaced instead of replacing the entire pug braid, the cost of replacing the pug braid 4 can be reduced, as well as the time and manpower required for the replacement work.

Meanwhile, the concave indentation surfaces 23, 36, 41, 44 and the protruding surfaces 24, 34, 42, 43, which are assembling surfaces, on which the respective divided blades in each of the above-described embodiments are assembled with each other, have a cross-sectional shape of "∧". It is not limited to what is formed, but the structure which can be assembled in the state engaged with each other, for example, a rounded cross section etc. of "∩" shape.

Each of the pug braids (2, 3, 4) of each embodiment as described above may be selectively installed on the rotary shaft 14, or may be installed in combination with each pug braid (2, 3, 4) When the upper divided braids 2a, 3a, 4a are badly worn in the process of kneading and conveying raw materials, the lower divided braids 2b, 3b, 4c are not replaced, and the upper divided braids 2a, Since only 3a and 4a are replaced, the cost of replacing the pug braids 2, 3 and 4 can be reduced, and the upper split braids 2a, 3a and 4a are compared with replacing the entire pug braid as in the prior art. It takes less time and effort to replace only a portion, saving time and manpower.

According to the present invention as described above, since the pug braids assembled in a spiral shape on the rotating shaft installed in the kneading portion of the refining machine are divided into upper and lower divided braids, friction with the raw materials during mixing and conveying raw materials such as clay or loess. When the upper split braid, which is concentrated in action, is so badly worn that the operation of kneading and conveying the raw materials does not proceed smoothly, the pug braid can be replaced only by splitting the upper split braid instead of replacing the entire pug braid as in the prior art. It not only reduces the time and manpower required for the replacement, but also reduces the replacement cost of the pug braid, which is effective for those who manufacture bricks and sidewalk blocks that are made of pottery. In addition to saving money It reduces the production cost of the product and provides the advantage to help increase the price competitiveness.

Claims (3)

A plurality of support shafts detachably installed in a state in which they are spaced apart at regular intervals in the spiral direction as independent structures on a rotating shaft that rotates inside the kneading unit of the refining machine, and above each of the supporting shafts; In a pug braid formed of a plurality of divided braids that are assembled in a prefabricated manner using a fastening bolt and a nut, The pug braid has a concave indentation surface and a concave surface forming a “∧” shape or “∨” shape so that the assembling surfaces which come into contact with each other when assembling a plurality of divided blades to the support shaft can be assembled together. Pug braid for kneading the raw material of the reinforcing machine, characterized in that formed. delete The method of claim 1, When the assembling of the plurality of divided blades in the middle portion of the concave surface joined in the state engaged with the protruding surface grooves for forming a space between the pointed portion of the protruding surface is formed Pug braid for mixing raw materials.

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