CN214458673U - Forming device of resistant double-layered core rope that excels in of buckling - Google Patents
Forming device of resistant double-layered core rope that excels in of buckling Download PDFInfo
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- CN214458673U CN214458673U CN202023347088.4U CN202023347088U CN214458673U CN 214458673 U CN214458673 U CN 214458673U CN 202023347088 U CN202023347088 U CN 202023347088U CN 214458673 U CN214458673 U CN 214458673U
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Abstract
The utility model discloses a forming device of a bending-resistant high-strength sandwich rope, which is applied to a braiding machine and comprises a rope skin expanding component, a die orifice component and an isometric heat setting component which are connected in sequence; the rope sheath expanding component comprises an expanding component and a limiting component, and the expanding component is used for expanding the diameter of the rope sheath; the die orifice assembly comprises a die orifice clamp and a clamp supporting rod, and the clamp supporting rod can drive the die orifice clamp to be adjusted up and down relative to the diameter expanding assembly; the equal-length heat setting assembly can heat and set the rope strands conveyed by the die assembly to obtain the sandwich rope. The problems that the radial wrapping force of the sheath yarns is increased, the hardness of the rope is increased and the knotting capability of the rope is reduced due to the fact that the sheath occupation ratio is lower than a standard suggested value are solved, the clamp supporting rod can drive the die orifice clamp to be adjusted up and down relative to the expanding component, the expanding range of the sheath can be adjusted according to actual conditions, and the stability of the sandwich rope in use is improved.
Description
Technical Field
The utility model belongs to rope production field, concretely relates to forming device of resistant double-layered core rope that excels in of buckling.
Background
A corewire is a type of rope in which the core is tightly wrapped around the sheath. The main bearing part is a rope core, and the rope sheath plays a role in protection. Generally, in order to improve the tensile performance of such ropes, 32-plaited, 36-plaited, 40-plaited, 48-plaited, etc. of plain or twill structure are often used for the outer skin layer; the advantages of such a skin structure are significant-the weight ratio of the cord core can be greatly increased.
In order to guarantee the overall performance of this type of rope, the minimum weight ratio of the sheath and core of this type of rope-the minimum value of the sheath weight ratio-is specified in standard EN1891: 1998: 4(D-1)/D2(ii) a Minimum value of the weight ratio of the rope core: 48/D2. Conventionally, if the weight ratio of the rope sheath is less than 4(D-1)/D2The following will occur with the sandwich cord: 1) the increase in the hardness of the rope results in a decrease in its knotting ability; 2) the rope core bulges caused by the reduction of the bending resistance of the rope; 3) the radial wrapping force of the rope sheath increases, causing the breaking strength to decrease.
SUMMERY OF THE UTILITY MODEL
To foretell not enough, the utility model provides a forming device of resistant sandwich rope that excels in of buckling to when increasing weave node effective surface area, weave the rope skin instantaneous diameter of node through synchronous reduction rope skin strand axial force, increase, realize that the hardness of this type sandwich rope reduces, resistant the promotion of buckling and tensile strength ability.
The utility model discloses a realize through following technical scheme:
a forming device of a bending-resistant high-strength sandwich rope is applied to a braiding machine and comprises a rope sheath expanding component, a die orifice component and an isometric heat setting component which are sequentially connected; the rope sheath expanding component comprises an expanding component and a limiting component, the expanding component is used for expanding the diameter of the rope sheath, and the rope core is conveyed to the expanding component through the limiting component and then penetrates into the rope sheath after expanding; the die opening assembly is used for limiting the diameter of a rope strand formed after the rope core is combined with the rope sheath after diameter expansion, and comprises a die opening clamp and a clamp supporting rod, and the clamp supporting rod can drive the die opening clamp to be adjusted up and down relative to the diameter expansion assembly; the equal-length heat setting assembly can heat and set the rope strands conveyed by the die assembly to obtain the sandwich rope.
Further, the lowest point of the die orifice clamp and the expanding component are positioned on the same horizontal plane.
Furthermore, the diameter expanding assembly comprises a diameter expanding circular ring and a diameter expanding needle, wherein the multi-strand rope sheath yarn is abutted to the periphery of the diameter expanding circular ring, and is fed into the die assembly to form the rope sheath after being expanded by the diameter expanding needle.
Further, the expanding needle is provided with an expanding needle top end extending into the rope sheath, and the length of the expanding needle top end is 30mm-50 mm.
Furthermore, the diameter of the expanding needle is 3mm-5 mm.
Furthermore, the limiting assembly comprises a first limiting part and a second limiting part which are sequentially arranged from bottom to top, the rope core sequentially penetrates through the first limiting part and the second limiting part, and the expanding needle is connected to the second limiting part.
Further, the rope skin expanding assembly further comprises a first buffer spring connected with the first limiting part and a second buffer spring connected with the second limiting part.
Furthermore, the forming device of the bending-resistant high-strength sandwich rope further comprises a thread breakage automatic stop assembly connected with the rope sheath expanding assembly, the thread breakage automatic stop assembly is arranged at the bottom of the weaving machine, and the rope core is conveyed to the expanding assembly through the limiting assembly by the thread breakage automatic stop assembly.
Furthermore, the forming device of the bending-resistant high-strength sandwich rope further comprises a first reversing assembly, wherein the first reversing assembly is connected with the wire breakage automatic stopping assembly so as to change the moving direction of the rope core conveyed to the first reversing assembly by the wire breakage automatic stopping assembly.
Furthermore, the forming device of the bending-resistant high-strength sandwich rope further comprises a second reversing assembly, wherein the second reversing assembly is connected with the die orifice assembly and the equal-length heat setting assembly so as to change the moving direction of the rope strands conveyed to the equal-length heat setting assembly by the die orifice assembly.
The utility model discloses following beneficial effect has: by using the rope sheath expanding component, the controllable reduction of the axial force of the rope sheath compound wires is realized, and the synchronous instantaneous expansion of the diameter of the sandwich rope at the weaving node is realized; the problems that the radial wrapping force of the sheath yarns is increased, the hardness of the rope is increased and the knotting capability of the rope is reduced due to the fact that the sheath ratio is lower than a standard recommended value are solved; meanwhile, the problem that tensile strength of the rope core in the axial direction is reduced due to the fact that more reaction force needs to be provided in the radial direction of the rope core of the sandwich rope caused by the fact that the radial wrapping force of the sheath yarns of the rope is increased is solved; the number of the rope sheath yarns is increased, and the effective surface area of the weaving node is increased by matching with the synchronous increase of the pitch of the sandwich rope; the contribution rate of the rope skin to the overall breaking strength of the sandwich rope is improved; the problem that the rope is scrapped because the rope sheath ratio is lower than the standard recommended value and the rope hardness is improved, the bending resistance is reduced, and even the rope core bulges after being bent for several times is solved; finally, by using the equal-length heat setting device, the unbalanced state of the radial force of the rope sheath compound yarn is eliminated, and the bending resistance of the sandwich rope is further enhanced; and the clamp supporting rod can drive the die orifice clamp to be adjusted up and down relative to the expanding component, the expanding range of the rope sheath can be adjusted according to actual conditions, and the stability of the sandwich rope in use is improved.
Drawings
FIG. 1 is a schematic diagram illustrating the structure of an exemplary embodiment of the present invention;
fig. 2 is a schematic diagram illustrating an exemplary embodiment of a sheath expanding assembly according to the present invention.
In the figure, 1, a thread breakage automatic stop component, 2, a rope sheath expanding component, 21, an expanding component, 211, an expanding ring, 212, an expanding needle, 22, a limiting component, 221, a first limiting component, 222, a second limiting component, 23, a spindle, 24, a fixing component, 25, a first supporting tube, 26, a second supporting tube, 27, a first buffer spring, 28, a second buffer spring, 3, a die orifice component, 31, a die orifice clamp, 32, a clamp supporting rod, 4, an equal-length heat setting component, 5, a first reversing component, 6 and a second reversing component.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It should be noted that the terms of orientation such as left, right, up, down, front and back in the embodiments of the present invention are only relative concepts or are referred to the normal use state of the product, i.e. the traveling direction of the product, and should not be considered as limiting.
In addition, it should be noted that the dynamic terms such as "relative movement" mentioned in the embodiments of the present invention include not only a change in position but also a movement in which a state changes without a relative change in position such as rotation or rolling.
Finally, it is noted that when an element is referred to as being "on" or "disposed" to another element, it can be on the other element or intervening elements may also be present. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.
As shown in fig. 1 and 2, a forming device of a bending-resistant high-strength sandwich rope is applied to a knitting machine, and comprises a rope sheath expanding component 2, a die orifice component 3 and an isometric heat setting component 4 which are connected in sequence; the rope sheath expanding component 2 comprises an expanding component 21 and a limiting component 22, the expanding component 21 is used for expanding the diameter of the rope sheath, and the rope core is conveyed to the expanding component 21 through the limiting component 22 and then penetrates into the expanded rope sheath; the die orifice assembly 3 is used for limiting the diameter of a rope strand formed after the rope core is combined with the rope sheath after diameter expansion, the die orifice assembly 3 comprises a die orifice clamp 31 and a clamp support rod 32, and the clamp support rod 32 can drive the die orifice clamp 31 to be adjusted up and down relative to the diameter expansion assembly 21; the equal-length heat setting assembly 4 can heat and set the strand conveyed by the die assembly 3 to obtain the sandwich rope. By using the rope sheath expanding component 2, the controllable reduction of the axial force of the rope sheath compound wires is realized, and the synchronous instantaneous expansion of the diameter of the sandwich rope at the weaving node is realized; the problems that the radial wrapping force of the sheath yarns is increased, the hardness of the rope is increased and the knotting capability of the rope is reduced due to the fact that the sheath ratio is lower than a standard recommended value are solved; meanwhile, the problem that tensile strength of the rope core in the axial direction is reduced due to the fact that more reaction force needs to be provided in the radial direction of the rope core of the sandwich rope caused by the fact that the radial wrapping force of the sheath yarns of the rope is increased is solved; the number of the rope sheath yarns is increased, and the effective surface area of the weaving node is increased by matching with the synchronous increase of the pitch of the sandwich rope; the contribution rate of the rope skin to the overall breaking strength of the sandwich rope is improved; the problem that the rope is scrapped because the rope sheath ratio is lower than the standard recommended value and the rope hardness is improved, the bending resistance is reduced, and even the rope core bulges after being bent for several times is solved; finally, by using the equal-length heat setting device, the unbalanced state of the radial force of the rope sheath compound yarn is eliminated, and the bending resistance of the sandwich rope is further enhanced; and the clamp support rod 32 can drive the die orifice clamp 31 to be adjusted up and down relative to the expanding component 21, the expanding range of the rope sheath can be adjusted according to actual conditions, and the stability of the sandwich rope in use is improved.
The forming device of the bending-resistant high-strength sandwich rope further comprises a thread breakage automatic stop assembly 1 connected with the rope sheath expanding assembly 2, the thread breakage automatic stop assembly 1 is arranged at the bottom of the weaving machine, and the rope core is conveyed to the expanding assembly 21 through the limiting assembly 22 by the thread breakage automatic stop assembly 1.
Preferably, the automatic wire-breaking stopping assembly 1 is mechanical, the die orifice clamp 31 is preferably circular, the effective length of the equal-length heat setting assembly 4 is 400-600 mm, and the set temperature is 150-200 ℃.
Preferably, the lowest point of the die holder 31 is located on the same horizontal plane as the expanding unit 21.
The expanding unit 21 includes an expanding ring 211 and expanding needles 212, and the multi-strand covered yarns are brought into contact with the outer periphery of the expanding ring 211, expanded by the expanding needles 212, and fed into the die assembly 3 to form a covered yarn.
The lowest point of the die orifice clamp 31 and the diameter expanding assembly 21 are located on the same horizontal plane, that is, the lowest point of the die orifice clamp 31 and the diameter expanding ring 211 are located on the same horizontal plane.
Preferably, the cover expanding assembly 2 further includes a plurality of spindles 23 for placing the cover yarns and a fixing member 24 for fixing the expanding ring 211, and the expanding ring 211 is welded to the fixing member 24.
Wherein the fixing member 24 is selected as a backstop slotted round nut.
Preferably, the diameter of the expanding ring 211 is 300mm to 500mm, but not more than the distance between the center of the forming device and the tangent point of the spindle 23.
Preferably, the diameter of the expanding needle 212 is 3mm to 5 mm.
The expanding needle 212 has an expanding needle 212 tip that extends into the cord sheath, and the length of the expanding needle 212 tip is 30mm to 50 mm.
The rope sheath yarn is provided with an expanding section between the expanding circular ring 211 and the expanding needle 212, and the included angle between the expanding section and the rope core is 45-90 degrees.
The limiting assembly 22 includes a first limiting member 221 and a second limiting member 222 sequentially arranged from bottom to top, the cord sequentially passes through the first limiting member 221 and the second limiting member 222, and the expanding needle 212 is connected to the second limiting member 222.
Preferably, the expanding pin 212 is welded to the second stopper 222, and the connection strength between the expanding pin 212 and the second stopper 222 is improved.
Preferably, the first limiting member 221 and the second limiting member 222 are both anti-backing slotted round nuts.
Preferably, the rope sheath expanding assembly 2 further comprises a first supporting tube 25 disposed below the first limiting member 221 and a second supporting tube 26 located between the first limiting member 221 and the second limiting member 222; the rope sheath expanding component 2 is supported integrally by the first support pipe 25 and the second support pipe 26, and meanwhile, a guiding function is provided for the movement of the rope core.
Preferably, two circular limiting holes are respectively installed at two ends of the second supporting tube 26, and the diameter of the circular limiting hole is 1.05-1.1 times of the outer diameter of the first supporting tube 25.
The rope sheath expanding assembly 2 further comprises a first buffer spring 27 connected with the first limiting member 221 and a second buffer spring 28 connected with the second limiting member 222. The first limiting member 221 and the second limiting member 222 are limited by the first buffer spring 27 and the second buffer spring 28, respectively, so that the stability of the first limiting member 221 and the second limiting member 222 is improved.
Preferably, the first buffer spring 27 is located above the first limiting member 221 and connected to the lower end of the second supporting tube 26, and the second buffer spring 28 is located below the second limiting member 222 and connected to the upper end of the second supporting tube 26.
The forming device of the bending-resistant high-strength sandwich rope further comprises a first reversing assembly 5, wherein the first reversing assembly 5 is connected with the automatic wire breaking stopping assembly 1 so as to change the moving direction of the rope core conveyed to the first reversing assembly 5 by the automatic wire breaking stopping assembly 1.
Preferably, the first reversing assembly 5 is a reversing wheel, the structure is simple, the installation is convenient, and the first reversing assembly 5 is positioned at the axis of the forming device of the bending-resistant high-strength sandwich rope.
Preferably, the rope core moves from the thread breakage automatic stop assembly 1 to the first reversing assembly 5 along the horizontal direction, and moves from the first reversing assembly 5 to the rope sheath expanding assembly 2 along the vertical direction.
The forming device of the bending-resistant high-strength sandwich rope further comprises a second reversing assembly 6, wherein the second reversing assembly 6 is connected with the die orifice assembly 3 and the equal-length heat setting assembly 4 so as to change the moving direction of the rope strands conveyed to the equal-length heat setting assembly 4 by the die orifice assembly 3.
Preferably, the second reversing assembly 6 is also a reversing wheel, so that the structure is simple and the installation is convenient.
Preferably, the cords are moved in a vertical direction from the die assembly 3 to the second reversing assembly 6 and in a horizontal direction from the second reversing assembly 6 to the equal length heat setting assembly 4.
The following is a detailed description of specific embodiments.
Example one
The utility model discloses a diameter is resistant production technology of the high strength sandwich rope of buckling-10 mm-the rope skin adopts single spindle two ply plain weave 32 to compile the structure, and the rope core adopts compound three-ply structure of twisting with fingers, including following step:
selecting materials: according to the requirements of standard GA494-2004 or NFPA1983-2017 or EN1891:1998, selecting high-strength polyester industrial filament with the melting point higher than 204 ℃ as the raw material of the sandwich rope; wherein the breaking strength of the industrial polyester filament is more than or equal to 8 cN/dtex;
twisting: in order to improve the tensile strength of the rope core and combine the strength utilization rate of the braided structure and the three-strand twisting structure, the rope core of the sandwich rope preferably selects a single three-strand twisting structure; and twisting and forming the rope core and the rope sheath in sequence according to the conventional production flow. The method specifically comprises the following steps:
the method comprises the following steps: plying, doubling and twisting high-strength polyester industrial filaments (the total specification is 22000Den) meeting the requirements to prepare rope core primary twisted yarns, wherein the twisting direction is S direction, and the twist range is 30-50 tpm;
step two: carrying out double twisting on the 6 bundles of the rope core primarily twisted yarns in the first step to prepare rope core double twisted yarns, wherein the twisting direction is Z direction, and the twist degree range is 30-50 tpm;
step three: twisting 3 bundles of the rope core re-twisted yarns obtained in the second step for the third time to obtain rope cores, and winding and forming the rope cores in a chuck type manner, wherein the twisting direction is the S direction, and the twist degree range is 20-30 tpm; at this time, the diameter of the rope core in a natural state is 8-8.5 mm. Then, the rope core is subjected to tension heat setting treatment, the heat setting temperature range is 150-200 ℃, the heat drawing speed range is 2-10m/min, and the heat drawing tension range is 2000-5000N;
step four: the high-strength polyester industrial filament (the total specification is 2500D) meeting the requirements is plied, doubled and twisted to prepare the sheath yarns, the twist range is 100-150TPM, wherein the twist direction of one half of the sheath yarns is S direction, and the twist direction of the other half of the sheath yarns is Z direction.
Pre-weaving: and (3) performing single-spindle double-strand pre-weaving operation on the sheath yarns in the fourth step of the twisting process, winding the sheath yarns in the same S direction on 16 spindles rotating clockwise, and winding the double-strand sheath yarns in the same Z direction on 16 spindles rotating anticlockwise.
Weaving: firstly, the sheath yarn of the pre-weaving step is installed on a 32-spindle weaving machine, preferably, the S-direction sheath yarn is installed on a spindle rotating clockwise, and the Z-direction sheath yarn is installed on a spindle rotating anticlockwise; secondly, the rope core of the twisting process passes through the thread breakage automatic stop assembly, the first reversing assembly and the rope sheath expanding assembly in sequence and then penetrates into the rope sheath; then, adjusting the height of the rope sheath expanding assembly and the die assembly to realize that the included angle between the rope sheath yarns and the rope core is 45-90 degrees and the top end of an expanding needle penetrates into the sandwich rope by 30-50 mm; and finally, after the temperature of the equal-length heat setting assembly arranged between the two traction wheels of the braiding machine is raised to a set temperature, starting the machine to obtain the 10mm bending-resistant high-strength sandwich rope.
Example two
The utility model discloses a diameter is 12mm resistant production technology of the high strength sandwich rope of buckling-the rope skin adopts single spindle double strand twill 32 to compile the structure, and the rope core adopts compound three-ply structure of twisting with fingers, including following step:
selecting materials: according to the requirements of standard GA494-2004 or NFPA1983-2017 or EN1891:1998, selecting high-strength polyester industrial filament with the melting point higher than 204 ℃ as the raw material of the sandwich rope; wherein the breaking strength of the industrial polyester filament is more than or equal to 8 cN/dtex;
twisting: in order to improve the tensile strength of the rope core and combine the strength utilization rate of the braided structure and the three-strand twisting structure, the rope core of the sandwich rope preferably selects a single three-strand twisting structure; and twisting and forming the rope core and the rope sheath in sequence according to the conventional production flow. The method specifically comprises the following steps:
the method comprises the following steps: plying, doubling and twisting high-strength polyester industrial filaments (the total specification is 35000Den) meeting the requirements to prepare rope core primary twisted yarns, wherein the twisting direction is S direction, and the twist range is 30-50 tpm;
step two: carrying out double twisting on the 6 bundles of the rope core primarily twisted yarns in the first step to prepare rope core double twisted yarns, wherein the twisting direction is Z direction, and the twist degree range is 30-50 tpm;
step three: twisting 3 bundles of the rope core re-twisted yarns obtained in the second step for the third time to obtain rope cores, and winding and forming the rope cores in a chuck type manner, wherein the twisting direction is the S direction, and the twist degree range is 20-30 tpm; at this time, the diameter of the rope core in a natural state is 10-10.5 mm. Then, the rope core is subjected to tension heat setting treatment, the heat setting temperature range is 150-200 ℃, the heat drawing speed range is 2-10m/min, and the heat drawing tension range is 4500-;
step four: the high-strength polyester industrial filament (the total specification is 3000D) meeting the requirements is plied, doubled and twisted to prepare the sheath yarns, the twist range is 100-150TPM, wherein the twist direction of one half of the sheath yarns is S direction, and the twist direction of the other half of the sheath yarns is Z direction.
Pre-weaving: and (3) performing single-spindle double-strand pre-weaving operation on the sheath yarns in the fourth step of the twisting process, winding the sheath yarns in the same S direction on 16 spindles rotating clockwise, and winding the double-strand sheath yarns in the same Z direction on 16 spindles rotating anticlockwise.
Weaving: firstly, the sheath yarn of the pre-weaving step is installed on a 32-spindle weaving machine, preferably, the S-direction sheath yarn is installed on a spindle rotating clockwise, and the Z-direction sheath yarn is installed on a spindle rotating anticlockwise; secondly, the rope core of the twisting process passes through the thread breakage automatic stop assembly, the first reversing assembly and the rope sheath expanding assembly in sequence and then penetrates into the rope sheath; then, adjusting the height of the rope sheath expanding assembly and the die assembly to realize that the included angle between the rope sheath yarns and the rope core is 45-90 degrees and the top end of an expanding needle penetrates into the sandwich rope by 30-50 mm; and finally, after the temperature of the equal-length heat setting assembly arranged between the two traction wheels of the braiding machine is raised to a set temperature, starting the machine to obtain the 12mm bending-resistant high-strength sandwich rope.
The bending-resistant high-strength sandwich rope prepared in example 1 and example 2 was subjected to performance tests, and the results are shown in table 1.
TABLE 1
With respect to the above specific examples of the present invention, the prior art examples are shown in table 2.
TABLE 2
Can know through above-mentioned table data, the embodiment of the utility model provides a 10mm and 12mm sandwich rope that make, under the condition that the rope skin weight accounts for than being less than respectively "standard requirement value-36% and 30.6% separately, rope skin twist coefficient is less than prior art embodiment twist coefficient respectively, not only improved sandwich rope's tensile strength more than 20% at least, solved the problem of rope core swell moreover.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A forming device of a bending-resistant high-strength sandwich rope is applied to a knitting machine and is characterized by comprising a rope sheath expanding component, a die orifice component and an isometric heat setting component which are sequentially connected;
the rope sheath expanding component comprises an expanding component and a limiting component, the expanding component is used for expanding the diameter of the rope sheath, and the rope core is conveyed to the expanding component through the limiting component and then penetrates into the expanded rope sheath;
the die opening assembly is used for limiting the diameter of a rope strand formed after the rope core is combined with the rope sheath after diameter expansion, the die opening assembly comprises a die opening clamp and a clamp supporting rod, and the clamp supporting rod can drive the die opening clamp to be adjusted up and down relative to the diameter expansion assembly;
the equal-length heat setting assembly can heat and set the strand conveyed by the die assembly to obtain the sandwich rope.
2. The device for forming a bending-resistant high-strength sandwich rope according to claim 1, wherein the lowest point of the die clamp and the expanding component are located on the same horizontal plane.
3. The device for forming a bending-resistant high-strength sandwich rope according to claim 1, wherein the diameter expanding assembly comprises a diameter expanding ring and a diameter expanding needle, a plurality of strand sheath yarns are abutted to the periphery of the diameter expanding ring, and are fed into the die assembly to form a sheath after being expanded by the diameter expanding needle.
4. The device for forming a bend-resistant high-strength sandwich rope according to claim 3, wherein the expanding needle has an expanding needle tip extending into the rope sheath, and the length of the expanding needle tip is 30mm-50 mm.
5. The forming device of the bending-resistant high-strength sandwich rope according to claim 3, wherein the diameter of the expanding needle is 3mm-5 mm.
6. The device for forming a bending-resistant high-strength sandwich rope according to claim 3, wherein the limiting assembly comprises a first limiting part and a second limiting part which are sequentially arranged from bottom to top, the rope core sequentially passes through the first limiting part and the second limiting part, and the expanding needle is connected to the second limiting part.
7. The device for forming a bend-resistant high-strength sandwich rope according to claim 6, wherein the rope sheath expanding assembly further comprises a first buffer spring connected with the first limiting member and a second buffer spring connected with the second limiting member.
8. The forming device of the bending-resistant high-strength sandwich rope according to claim 1, further comprising a thread breakage automatic stop assembly connected with the rope sheath expanding assembly, wherein the thread breakage automatic stop assembly is arranged at the bottom of the weaving machine, and the rope core is conveyed to the expanding assembly through the limiting assembly by the thread breakage automatic stop assembly.
9. The device for forming a bending-resistant high-strength sandwich rope according to claim 8, further comprising a first reversing assembly, wherein the first reversing assembly is connected with the automatic rope breaking stopping assembly so as to change the moving direction of the rope core conveyed to the first reversing assembly by the automatic rope breaking stopping assembly.
10. The forming device of claim 1, further comprising a second reversing assembly, wherein the second reversing assembly connects the die assembly and the equal length heat setting assembly to change the moving direction of the strand conveyed by the die assembly to the equal length heat setting assembly.
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