CN217552575U - Pressing die for rope saw joint - Google Patents

Abstract

The utility model discloses a moulding-die that rope saw connects, include: a first stamper including a first mating surface provided with a first stamper inner groove extending along a length direction of the first stamper, the first stamper inner groove including a first recessed portion and a first protruding portion; a second die comprising a second abutment surface provided with a second die inner groove extending along a length direction of the second die, the second die inner groove comprising a second recessed portion and a second raised portion; when the first butt joint surface is jointed with the second butt joint surface, the first die inner groove and the second die inner groove form a die cavity, and the first die inner groove and the second die inner groove are axisymmetric. The work efficiency and the security of above-mentioned technical scheme high rope saw cutting operation keep the original structure of rope saw, prolong the life of rope saw.

Description

Pressing die for rope saw joint

Technical Field

The utility model relates to a rope saw technical field especially relates to a pressing die that rope saw connects.

Background

With the improvement of the manufacturing technology and equipment of diamond tools, diamond wire saws are widely applied to the fields of mining and processing, sawing reinforced concrete members in constructional engineering and the like. When the rope saw is used for cutting stones and concrete with different sizes, rope saws with different lengths are needed, and rope joints are needed to be used for connecting ropes at the rope ends of the two ends of the rope saw to form a closed loop.

The rope saw joint is a hollow steel cylinder, and the joint is placed in the pressing die and pressed and connected by applying external force, so that the rope saw joint is connected with two ends of a rope end of the rope saw. The firm degree that the rope saw connects the crimping greatly influences the use of rope saw, and current moulding-die simple structure adopts half hexagon inside groove more, and the rope saw connects the fixed strength low to the rope saw after the crimping. When the wire saw is used for high-speed cutting operation, the steel wire rope is easy to fall off from the joint of the wire saw, so that safety accidents are caused, and the use efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

Therefore, the pressing die for the rope saw joint needs to be provided, the problems that the structure of the existing pressing die is simple, half-hexagonal inner grooves are mostly adopted, the fixing strength of the joint to the rope saw is low after the pressing is finished, when the rope saw is used for high-speed cutting operation, a steel wire rope is easy to fall off from the part of the rope saw joint, safety accidents are caused, and the using efficiency is influenced are solved.

To achieve the above object, the present application provides a die for a joint of a wire saw, comprising:

a first stamper including a first mating surface provided with a first stamper inner groove extending along a length direction of the first stamper, the first stamper inner groove including a first recessed portion and a first protruding portion, the first protruding portion and the first recessed portion being sequentially arranged along the length direction of the first stamper;

the second die comprises a second butting surface, the second butting surface is provided with a second die inner groove, the second die inner groove extends along the length direction of the second die, the second die inner groove comprises a second concave part and a second convex part, and the second convex part and the second concave part are sequentially arranged along the length direction of the second die;

when the first butt joint surface is jointed with the second butt joint surface, the first die inner groove and the second die inner groove form a die cavity, and the first die inner groove and the second die inner groove are axisymmetric.

Further, the method comprises the following steps: the first recess and the second recess form a recess cavity, and the cross section of the recess cavity is hexagonal.

Further, the method comprises the following steps: the first boss and the second boss form a boss cavity, and the cross section of the boss cavity is hexagonal.

Further, the method comprises the following steps: in the length direction along the first pressing die, two ends of the first concave part are cambered surfaces, and the middle part of the first concave part is a straight surface.

Further, the method comprises the following steps: the first raised portion is a straight surface in a direction along a length of the first die.

Further: the first protruding part is a wavy surface or a serrated surface in a length direction along the first die.

Further: the first depressed parts are multiple, the first raised parts are multiple, and the first raised parts and the first depressed parts are alternately arranged along the length direction of the first pressing die.

Further: the first bulge is positioned at the end part of the first die inner groove.

The rope saw joint is characterized in that the rope saw with the rope saw joint is placed in a first pressing die inner groove of a first pressing die, the first pressing die and a second pressing die are aligned (or aligned left and right), the first pressing die inner groove and the second pressing die inner groove form a pressing die cavity, the rope saw joint is clamped by the pressing die cavity, mechanical force is applied to enable the pressing die cavity to press the rope saw joint, a concave-convex structure (matched with a convex part and a concave part) is formed between the outer surface and the inner surface of the rope saw joint, the rope saw joint is fully extruded into a rope saw strand gap, the rope saw is tightly combined with the rope saw joint, friction between the rope saw and the rope saw joint is strengthened, and the rope saw joint is not easy to fall off; so, the moulding-die that the rope saw connects improves the work efficiency and the security of rope saw cutting operation, has kept the original structure of rope saw, has prolonged the life and the cutting efficiency of rope saw.

Drawings

FIG. 1 is a schematic structural view illustrating alignment of a first stamper and a second stamper in this embodiment;

FIG. 2 is an elevational view of the first die and the second die in alignment according to this embodiment;

FIG. 3 is a front view of an inner groove of the first die in the present embodiment;

FIG. 4 is a schematic diagram illustrating a structure of an inner groove of the first stamper in the present embodiment;

FIG. 5 is an enlarged partial schematic view of FIG. 4;

FIG. 6 is a schematic diagram illustrating an inner groove of a second die in the present embodiment;

FIG. 7 is a schematic view of the cord saw joint of this embodiment;

FIG. 8 is a second schematic view of the cord saw joint of this embodiment;

FIG. 9 is a third schematic view of the rope saw joint according to the present embodiment;

fig. 10 is a schematic structural view of the diamond wire saw in this embodiment.

Description of reference numerals:

10. a first stamper;

11. a first mating surface;

12. a first die inner groove;

13. a first recess;

14. a first boss;

20. a second die;

21. a second butting face;

22. an inner groove of a second die;

23. a second recessed portion;

24. a second boss portion;

30. a die cavity;

40. a rope saw joint;

41. a raised wall; 411. an inner wall;

42. a recessed wall; 421. an inner wall;

50. a diamond wire saw;

51. a wire rope;

52. and (5) stringing beads.

Detailed Description

To explain technical contents, structural features, and objects and effects of the technical solutions in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.

Referring to fig. 1 to 6, the present embodiment provides a pressing die for a rope saw joint, including:

a first stamper 10, the first stamper 10 including a first abutting surface 11, the first abutting surface 11 being provided with a first stamper inner groove 12, the first stamper inner groove 12 extending along a length direction of the first stamper 10 (as indicated by an arrow in fig. 3, 4, and 6), the first stamper inner groove 12 including a first concave portion 13 and a first convex portion 14, the first convex portion 14 and the first concave portion 13 being sequentially arranged along the length direction of the first stamper 10, the first concave portion 13 and the first convex portion 14 being both arranged on the first stamper inner groove 12, and a region on the first stamper inner groove 12 outside the first concave portion 13 being the first convex portion 14;

a second die 20, the second die 20 including a second butting surface 21, the second butting surface 21 being provided with a second die inner groove 22, the second die inner groove 22 extending along the length direction of the second die 20, the second die inner groove 22 including a second recessed portion 23 and a second raised portion 24, the second raised portion 24 and the second recessed portion 23 being sequentially arranged along the length direction of the second die 20, the second recessed portion 23 and the second raised portion 24 being both arranged on the second die inner groove 22, and the area on the second die inner groove 22 outside the second recessed portion 23 being the second raised portion 24;

when the first mating surface 11 and the second mating surface 21 are attached (the first mating surface 11 faces the second mating surface 21, and then they approach each other), the first die inner groove 12 and the second die inner groove 22 form a die cavity 30, the first die inner groove 12 and the second die inner groove 22 are axisymmetric, the axis of symmetry is the first mating surface 11 (the second mating surface 21, because the first mating surface 11 and the first mating surface 11 are attached, the surfaces of the two are attached and form a straight line), and if the first die inner groove 12 and the second die inner groove 22 are folded in half along the axis of symmetry, the first die inner groove 12 and the second die inner groove 22 are completely overlapped. The structure of the first die inner groove 12 is the same as that of the second die inner groove 22, that is, the structure of the first depressed portion 13 and the structure of the second depressed portion 23 are the same, and the structure of the first raised portion 14 and the structure of the second raised portion 24 are the same.

In the technical scheme, the rope saw assembled with the rope saw joint is placed in a first pressing die inner groove of a first pressing die, the first pressing die and a second pressing die are vertically aligned (or horizontally aligned), the first pressing die inner groove and the second pressing die inner groove form a pressing die cavity, the rope saw joint is surrounded by the pressing die inner cavity, mechanical force is applied to enable the pressing die cavity to press the rope saw joint, a concave-convex structure (matched with a convex part and a concave part) is formed between the outer surface and the inner surface of the rope saw joint, the rope saw joint is fully extruded into a rope saw strand gap, the rope saw is tightly combined with the rope saw joint, the friction force between the rope saw and the rope saw joint is strengthened, and the rope saw joint is not easy to fall off; so, the moulding-die that the rope saw connects improves the work efficiency and the security of rope saw cutting operation, has kept the original structure of rope saw, has prolonged the life and the cutting efficiency of rope saw.

Referring to fig. 1 and 2, according to an embodiment of the present application, the first and second depressions 13 and 23 form a depression cavity having a hexagonal shape in cross section parallel to the width direction of the first die 10 (when the first and second dies 10 and 20 are attached). In certain embodiments, the cross-section of the recessed cavity may be circular, quadrilateral, octagonal, decagonal, or the like in shape.

Referring to fig. 1 and 2, according to an embodiment of the present application, the first and second protrusions 14 and 24 form a protrusion cavity having a hexagonal cross-section parallel to the width direction of the first die 10 (when the first and second dies 10 and 20 are attached). In certain embodiments, the cross-section of the convex cavity may be circular, quadrilateral, octagonal, decagonal, or the like in shape.

Referring to fig. 1 and 2, according to an embodiment of the present application, the cross-sectional shape of the concave cavity and the cross-sectional shape of the convex cavity may be the same or different, for example: when the cross-sectional shape of the concave cavity is a hexagon, the cross-sectional shape of the convex cavity may be any one of a hexagon, a circle, a quadrangle, an octagon, and a decagon.

Referring to fig. 3 to 6, according to an embodiment of the present disclosure, in a length direction of the first stamper 10, two ends of the first recess 13 are a straight surface, an arc surface, a wavy surface, or a sawtooth surface, two ends of the first recess 13 are connected to the first protrusion 14, and a middle of the first recess 13 is a straight surface, an arc surface, a wavy surface, or a sawtooth surface. Preferably, both ends of the first recess 13 are arc surfaces, and the middle of the first recess 13 is a straight surface, the structure is shown in fig. 5, so that the first recess 13 is convenient to manufacture.

Referring to fig. 3 to 6, according to an embodiment of the present application, the first protruding portion 14 is a straight surface, a wavy surface or a sawtooth surface along the length direction of the first die 10.

Referring to fig. 3 to 6, according to an embodiment of the present disclosure, in a length direction of the second stamper 20, two ends of the second recess 23 are a straight surface, an arc surface, a wavy surface, or a sawtooth surface, two ends of the second recess 23 are connected to the second protrusion 24, and a middle of the second recess 23 is a straight surface, an arc surface, a wavy surface, or a sawtooth surface. Preferably, the two ends of the second concave portion 23 are arc surfaces, and the middle of the second concave portion 23 is a straight surface, so that the second concave portion 23 is convenient to manufacture.

Referring to fig. 3 to 6, according to an embodiment of the present disclosure, the second protrusion 24 is a straight surface, a wavy surface or a sawtooth surface along the length direction of the second die 20.

Referring to fig. 3, 4 and 6, according to an embodiment of the present invention, the first concave portion 13 is plural, the first convex portion 14 is plural, and the first convex portion 14 and the first concave portion 13 are alternately arranged along the length direction of the first die 10, so that the width of the first die internal groove 12 of the first die 10 is in a wide-narrow-wide-narrow form, and the width of the second die internal groove 22 of the second die 20 is in a wide-narrow-wide-narrow form, so that the rope saw joint 40 of the steel hollow cylinder is pressed into the rope saw joint 40 of wide-narrow-wide-narrow.

Referring to fig. 1, 3, 4 and 6, according to an embodiment of the present application, a first concave portion 13 or a first convex portion 14 is located at an end of a first die inner groove 12. If the first depressions 13 are located at the ends of the first die inner grooves 12, the width of the die cavity 30 is in the form of wide-narrow-wide-narrow; if the first raised portion 14 is located at the end of the first die internal groove 12, then the width of the die cavity 30 is in the form of narrow-wide-narrow-wide.

The method of using the stamper is described here:

1. rope shearing: cutting off at least two rubber layers of the rope saw by using a pair of inclined-nose pliers to expose the steel wire rope inside, adding the exposed lengths of the two steel wires to be equal to the length of a rope saw joint 40, connecting the cut-off parts of the rope saw into the rope saw joint 40, wherein the rope saw joint 40 is in a steel cylindrical shape;

2. assembling: the first die 10 and the second die 20 should be aligned, the die inner grooves of the first die 10 and the die inner grooves of the second die 20 are combined to form a hexagonal die cavity 30, and the die cavity 30 should be cleaned;

3. rope connection: the rope saw is assembled with the rope saw joint 40 and then placed in the hexagonal die cavity 30;

4. pressurizing: a technician holds a hydraulic clamp or a diamond wire saw joint pressing clamp to press the wire saw joint 40 into a specific shape;

note that: the appearance quality of the steel wire saw joint 40 must not be damaged in the pressing process, and the surface of the wire saw joint 40 should be smooth and have no cracks, flash, burrs and other adverse phenomena.

A pressing die applied to an anti-drop wire saw joint utilizes the plastic deformation of steel, and under the action of mechanical force, the wire saw joint is fully extruded into a wire saw strand gap, so that the wire saw and the wire saw joint are tightly combined, the original structure of the wire saw is kept, and the service life and the cutting efficiency of the wire saw are prolonged.

Referring to fig. 1 to 10, the present embodiment further provides a rope saw joint, including:

the rope saw joint 40 is a hollow cylinder, a convex wall 41 and a concave wall 42 are sequentially arranged on the wall of the rope saw joint 40 in the length direction (axial direction), the inner diameter of the convex wall 41 is smaller than that of the concave wall 42, the diameter of the inner circle (also the hollow part of the hollow cylinder) of the rope saw joint 40 is called the inner diameter, and the inner wall 411 of the convex wall 41 and the inner wall 421 of the concave wall 42 are both sleeved on the steel wire rope 51 in the diamond rope saw 50.

In the technical scheme, the inner wall of the rope saw joint forms a concave-convex structure and is fully extruded into the gaps of the rope saw strand wires, so that the rope saw and the rope saw joint are tightly combined, the friction force between the rope saw and the rope saw joint is enhanced, and the rope saw joint is not easy to fall off; so, can improve the work efficiency and the security of rope saw cutting operation, keep the original structure of rope saw, prolong the life and the cutting efficiency of rope saw.

Referring to fig. 7, 8 and 9, according to one embodiment of the present application, the rope saw joint 40 is an axially symmetric hollow cylinder with the axis of symmetry located at the center of the rope saw joint 40 (i.e., the center of the hollow portion of the hollow cylinder) and along the length of the rope saw joint 40. The length of the protruding wall 41 is uniform along the length of the rope saw joint 40, and the protruding wall 41 forms a ring shape along the width of the rope saw joint 40. The length of the recessed wall 42 is uniform along the length of the rope saw attachment 40, and the recessed wall 42 forms a loop along the width of the rope saw attachment 40. In this manner, the rope saw joint 40 is easy to manufacture. In some embodiments, the length of the raised wall 41 varies along the length of the rope saw joint 40; and, the length of the recessed wall 42 varies along the length of the rope saw joint 40, such a configuration is not easy to manufacture.

Referring to fig. 7, 8 and 9, according to an embodiment of the present disclosure, the outer wall of the convex wall 41 has the same shape as the inner wall 411 of the convex wall 41, the outer wall of the concave wall 42 has the same shape as the inner wall 421 of the concave wall 42, and the outer diameter of the convex wall 41 is smaller than the outer diameter of the concave wall 42. As such, the convex wall 41 and the concave wall 42 may be made by a pressing process of: the rope saw joint 40 is clamped by the first pressing die 10 and the second pressing die 20, and mechanical force is applied to enable the first pressing die 10 and the second pressing die 20 to press the outer surface and the inner surface of the rope saw joint 40 into a concave-convex structure. After pressing, the first concave portion 13 of the first pressing die 10 and the second concave portion 23 of the second pressing die 20 correspond to the concave wall 42 of the rope saw joint 40, and the first convex portion 14 of the first pressing die 10 and the second convex portion 24 of the second pressing die 20 correspond to the convex wall 41 of the rope saw joint 40.

Referring to fig. 7, 8 and 9, according to one embodiment of the present application, the inner wall 411 of the raised wall 41 is straight, curved, wavy or serrated along the length of the rope saw joint 40.

Referring to fig. 7, 8 and 9, in one embodiment of the present application, the inner wall 421 of the recess wall 42 has two ends of a straight surface, an arc surface, a wavy surface or a sawtooth surface and a middle of a straight surface, an arc surface, a wavy surface or a sawtooth surface along the length direction of the rope saw joint 40.

Referring to fig. 7, 8 and 9, according to one embodiment of the present application, the cross-sectional shape of the convex wall 41 includes, but is not limited to: hexagonal, circular, quadrilateral, octagonal, decagonal, etc. Preferably, the cross-section of the raised wall 41 is hexagonal in shape.

Referring to fig. 7, 8 and 9, according to one embodiment of the present application, the cross-sectional shape of the recessed wall 42 includes, but is not limited to: hexagonal, circular, quadrilateral, octagonal, decagonal, etc. Preferably, the cross-sectional shape of the recess wall 42 is hexagonal.

Referring to fig. 7, 8 and 9, according to one embodiment of the present application, the plurality of convex walls 41 and the plurality of concave walls 42 are provided, and the convex walls 41 and the concave walls 42 are alternately arranged along the length direction of the rope saw joint 40, so that the rope saw joint 40 has a shape of wide-narrow-wide-narrow.

Referring to fig. 7, 8 and 9, according to an embodiment of the present application, the wire saw joint 40 is a steel wire saw joint 40, and the steel wire saw joint 40 has good toughness and plasticity, uniform material, high structural reliability, and is suitable for bearing impact and dynamic load and being pressed into a specific shape.

Referring to fig. 10, the present embodiment further provides a diamond wire saw, which is a cutting and dismantling tool for mines, waste materials, arc plates, large stone materials, thick concrete, irregular concrete reinforcing steel bars, bridge roads, and the like. The diamond wire saw 50 includes:

a wire rope 51;

a plurality of beads 52, the plurality of beads 52 being sleeved on the wire rope 51;

the rope saw joint 40, the rope saw joint 40 fixes the end of the steel wire rope 51 together to form a closed loop, the rope saw joint 40 is the rope saw joint 40 according to any one of the above embodiments, and the structure is shown in fig. 7 to 10.

The beads 52 comprise a carcass working layer disposed on a substrate disposed on a steel wire of a diamond wire saw and a substrate. The diamond wire saw 50 needs to rotate during use, so that the diamond beads 52 on the diamond wire saw 50 are evenly consumed on the circumferential surface, and the diamond beads 52 are simultaneously subjected to two acting forces in the axial impact direction and the radial tangential direction.

The diamond wire saw 50 has many advantages of high material utilization rate, high cutting efficiency, environmental protection and the like in material cutting, which are not comparable to other types of cutters, and thus the diamond wire saw has great progress in market share in recent years.

The steel wire rope 51 is connected end to form a closed loop, the fixing strength of the rope heads at the two ends of the steel wire rope 51 is low, and the steel wire rope 51 is easy to fall off from the rope saw joint 40 and becomes the weakest part in the whole rope saw. The inner wall of the rope saw joint 40 forms a concave-convex structure and is fully squeezed into the gaps of the rope saw strand wires, so that the rope saw is tightly combined with the rope saw joint 40, the friction force between the rope saw and the rope saw joint 40 is enhanced, and the rope saw joint 40 is not easy to fall off; so, can improve the work efficiency and the security of rope saw cutting operation, keep the original structure of rope saw, prolong the life and the cutting efficiency of rope saw.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or related to other embodiments specifically defined. In principle, in the present application, the technical features mentioned in the embodiments can be combined in any manner to form a corresponding implementable technical solution as long as there is no technical contradiction or conflict.

Unless defined otherwise, technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the use of relational terms herein is intended only to describe particular embodiments and is not intended to limit the present application.

In the description of the present application, the term "and/or" is a expression for describing a logical relationship between objects, meaning that three relationships may exist, for example a and/or B, meaning: there are three cases of A, B, and both A and B. In addition, the character "/" herein generally indicates that the former and latter associated objects are in a logical relationship of "or".

In this application, terms such as "first" and "second" are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.

Without further limitation, in this application, the use of "including," "comprising," "having," or other similar expressions in phrases and expressions of "including," "comprising," or "having," is intended to cover a non-exclusive inclusion, and such expressions do not exclude the presence of additional elements in a process, method, or article that includes the recited elements, such that a process, method, or article that includes a list of elements may include not only those elements but also other elements not expressly listed or inherent to such process, method, or article.

As is understood in the examination of the guidelines, the terms "greater than", "less than", "more than" and the like in this application are to be understood as excluding the number; the expressions "above", "below", "within" and the like are understood to include the present numbers. In addition, in the description of the embodiments of the present application, "a plurality" means two or more (including two), and expressions related to "a plurality" similar thereto are also understood, for example, "a plurality of groups", "a plurality of times", and the like, unless specifically defined otherwise.

In the description of the embodiments of the present application, spatially relative expressions such as "central," "longitudinal," "lateral," "length," "width," "thickness," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used, and the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the specific embodiments or drawings and are only for convenience of describing the specific embodiments of the present application or for the convenience of the reader, and do not indicate or imply that the device or component in question must have a specific position, a specific orientation, or be constructed or operated in a specific orientation and therefore should not be construed as limiting the embodiments of the present application.

Unless specifically stated or limited otherwise, the terms "mounted," "connected," "secured," and "disposed" used in the description of the embodiments of the present application are to be construed broadly. For example, the connection can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection, an electrical connection, or a communication connection; they may be directly connected or indirectly connected through an intermediate; which may be communication within two elements or an interaction of two elements. Specific meanings of the above terms in the embodiments of the present application can be understood by those skilled in the art to which the present application pertains in accordance with specific situations.

It should be noted that, although the above embodiments have been described herein, the scope of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, the changes and modifications of the embodiments described herein, or the equivalent structure or equivalent process changes made by the contents of the specification and the drawings of the present invention, directly or indirectly apply the above technical solutions to other related technical fields, all included in the protection scope of the present invention.

Claims (8)

1. A die for a rope saw joint, comprising:

a first stamper including a first mating surface provided with a first stamper inner groove extending along a length direction of the first stamper, the first stamper inner groove including a first recessed portion and a first protruding portion, the first protruding portion and the first recessed portion being sequentially arranged along the length direction of the first stamper;

the second die comprises a second butting surface, the second butting surface is provided with a second die inner groove, the second die inner groove extends along the length direction of the second die, the second die inner groove comprises a second concave part and a second convex part, and the second convex part and the second concave part are sequentially arranged along the length direction of the second die;

when the first butt joint surface is jointed with the second butt joint surface, the first die inner groove and the second die inner groove form a die cavity, and the first die inner groove and the second die inner groove are axisymmetric.

2. The die for rope saw joints according to claim 1, wherein: the first recess and the second recess form a recess cavity, and the cross section of the recess cavity is hexagonal.

3. A die for a rope saw joint according to claim 1 or 2, wherein: the first boss and the second boss form a boss cavity, and the cross section of the boss cavity is hexagonal.

4. The die for rope saw joints according to claim 1, wherein: in the length direction along the first pressing die, two ends of the first concave part are cambered surfaces, and the middle part of the first concave part is a straight surface.

5. A die for a rope saw joint according to claim 1 or 4, wherein: the first raised portion is a straight surface in a direction along a length of the first die.

6. A die for a rope saw joint according to claim 1 or 4, wherein: the first protruding part is a wavy surface or a serrated surface in a length direction along the first die.

7. The die for a rope saw joint according to claim 1, wherein: the first depressed parts are multiple, the first raised parts are multiple, and the first raised parts and the first depressed parts are alternately arranged along the length direction of the first pressing die.

8. A die for a rope saw joint according to claim 1 or 7, characterized in that: the first bulge is positioned at the end part of the first die inner groove.

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