A kind of cold drawn steel wire drawing device for iron chain

Abstract

The present invention discloses a wire drawing device for cold-drawn steel wire for an iron chain, comprising a main bracket, a limiting mechanism being arranged on the main bracket, and the main bracket being connected to a wire drawing mechanism via the limiting mechanism, a bottom plate being fixed to the bottom end of the wire drawing mechanism, the wire drawing mechanism comprising a cover plate and a base, a spherical groove being arranged on the inner wall of the bottom end of the cover plate, and a second spherical groove being arranged on the inner wall of the top end of the base, a spherical center being arranged between the cover plate and the base, the inner wall of the spherical groove being fitted to the outer wall of the spherical center, and a gap being arranged between the second spherical groove and the spherical center, a fixing mechanism being arranged on the inner wall of the spherical center, and a wire drawing die being fixed at a central position of the spherical center via the fixing mechanism, an arc surface being arranged on the outer walls on the same side of the cover plate and the base, the wire drawing device for cold-drawn steel wire for an iron chain disclosed by the present invention has the effect of solving the defect of uneven wear of the core of the wire drawing die in the wire drawing production process, and the service life of the wire drawing die is increased by more than double.

Description

Technical Field

[0001] The invention relates to the technical field of steel wire drawing, and in particular to a cold-drawn steel wire drawing device for an iron chain. Background Art

[0002] Cold drawing is a material processing technology. For metal materials, cold drawing refers to drawing the material at room temperature in order to achieve a certain shape and certain mechanical properties. Cold-drawn products have the advantages of high dimensional accuracy and good surface finish compared to hot forming.

[0003] During the cold drawing process of steel wire, the steel wire needs to be passed through the wire drawing die and drawn under the action of the wire drawing die. During the wire drawing process, the steel wire undergoes plastic deformation, thereby achieving the purpose of lengthening the steel wire and reducing the thickness of the steel wire. However, during the steel wire drawing process, the traditional fixed wire drawing die is subjected to unidirectional force and wears quickly, which can easily cause the ovality of the cold drawn steel wire to exceed the tolerance, affecting the quality of the cold drawn steel wire. Summary of the invention

[0004] The invention discloses an iron chain cold-drawn steel wire drawing device, aiming to solve the technical problem that in the process of steel wire drawing, the traditional fixed wire drawing die is subjected to unidirectional force and wears quickly, which easily causes the ovality of the cold-drawn steel wire to exceed the tolerance and affects the quality of the cold-drawn steel wire.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A wire drawing device for cold-drawn steel wire of an iron chain comprises a main bracket, a limiting mechanism is arranged on the main bracket, and the main bracket is connected to a wire drawing mechanism through the limiting mechanism, a bottom plate is fixed to the bottom end of the wire drawing mechanism, the wire drawing mechanism comprises a cover plate and a base, a spherical groove is arranged on the inner wall of the bottom end of the cover plate, and a second spherical groove is arranged on the inner wall of the top end of the base, a spherical center is arranged between the cover plate and the base, the inner wall of the spherical groove is in contact with the outer wall of the spherical center, and a gap is arranged between the second spherical groove and the spherical center, the inner wall of the spherical center is arranged with a fixing mechanism, and the spherical center A wire drawing die is fixed at the center position by a fixing mechanism, the outer walls on the same side of the cover plate and the base are provided with an arc surface, and a metal induction plate and a second metal induction plate are respectively attached to the two arc surfaces, an indicator light is provided on one side of the base, and the indicator light is connected to the metal induction plate and the second metal induction plate circuit, a plurality of inner rods are connected to the outer wall of the bottom end of the base, and a sleeve is movably sleeved on the outer wall of each inner rod, and a plurality of the sleeves are fixed to the top end of the bottom plate, a cylinder is connected to the bottom center position of the base, and the bottom end of the cylinder is fixed to the bottom plate.

[0007] By providing a wire drawing mechanism, when the steel wire is passed through the wire drawing die for cold drawing, the ball center is arranged between the cover plate and the base based on the movement of the ball center, and the ball center is fitted through the inner wall of the cover plate. A gap is provided between the base and the ball center to ensure the relative movement of the ball center on the base. Furthermore, during the wire drawing process, the ball center will move with the movement of the wire drawing direction to ensure that the center position of the wire drawing die and the wire drawing direction remain in the same straight line, thereby solving the defect of uneven wear of the wire drawing die core during the wire drawing production process, and the service life of the wire drawing die is more than doubled. At the same time, if the wire drawing direction deviates too much and makes the steel wire contact the metal sensing plate or the second metal sensing plate, the cylinder drives the wire drawing die to move up or down a short distance to expand the adaptability range of the wire drawing die, avoid the displacement of the wire drawing direction beyond the movement range of the ball center, and ensure that the rotation of the wire drawing die can be carried out normally.

[0008] In a preferred embodiment, the fixing mechanism includes a plurality of plug rods, and the plurality of plug rods are symmetrically distributed on both sides of the wire drawing die, the spherical center includes a hemispherical support block and a second hemispherical support block, a plurality of slots are arranged on the inner wall on one side of the hemispherical support block, and the plurality of plug rods on one side of the wire drawing die are inserted into the plurality of slots, a plurality of slide grooves are arranged on the inner wall on the opposite side of the second hemispherical support block, and the plurality of plug rods on the other side of the wire drawing die are movably connected in the plurality of slide grooves, the inner outer wall of the second hemispherical support block is fixedly connected to two inner sleeves, and the two inner sleeves are symmetrically distributed in the upper and lower positions, a second spring is arranged on the inner wall of the two inner sleeves, and one end of the second spring Connect the limiting block, the inner wall of the hemispherical support block is provided with two second sliding grooves, and the two second sliding grooves are relatively distributed, one end of the two sliding grooves is respectively provided with a limiting groove, the limiting block is clamped in the limiting groove, an installation groove is provided between the two limiting grooves, push blocks are respectively provided on both sides of the installation groove, and the push block passes through the limiting groove, the outer walls on the same side of the two push blocks are connected with support plates, and the two support plates are simultaneously connected with a push frame, the push frame is arranged in the installation slot, the outer periphery of the two push blocks is provided with a spring, and one end of the spring is fixed to one side outer wall of the installation groove, and a hole is provided on one side inner wall of the hemispherical support block, and the hole corresponds to the middle section of the push frame.

[0009] By providing a fixing mechanism, when installing the wire drawing die, by fixing the insertion rod in the slot and closing the second hemisphere support block, the limit block moves along the second slide groove to the limit groove position and then the second spring is pulled open for limiting, so that the installation is completed quickly. When disassembling the wire drawing die, the tool is inserted into the hole and the push rack is pushed. The push rack can act on the two limit blocks at the same time, thereby reducing the difficulty of disassembly and improving the efficiency of disassembly of the ball center.

[0010] In a preferred embodiment, a card slot is provided at the bottom end of the cover plate, the limiting mechanism includes a cross frame, and the cross frame is movably connected to the card slot, a support frame is connected between the cross frame and the main support, and one side of the cover plate is connected to the cross frame through a hinge, a semicircular limiting hole is provided on the inner wall of the cover plate, and a second semicircular limiting hole is also provided on the inner wall of the cross frame, limiting nails are simultaneously provided in the semicircular limiting hole and the second semicircular limiting hole, one end of the limiting nail is connected to a semicircular support plate, a circular limiting hole is provided on the inner wall of the cross frame, and the circular limiting hole is connected to the second semicircular limiting hole.

[0011] By setting a limiting mechanism and supporting the cover plate through a cross frame and a support frame, the stable support of the cover plate is ensured. After the cover plate is fixed, the installation of the center of the ball is completed by inserting the limiting pins into the semicircular limiting holes and the second semicircular limiting holes and rotating the limiting pins to fix the positions of the limiting pins. The entire structure not only ensures stable fixation, but also reduces the difficulty of installation, which is conducive to improving the installation efficiency of the center of the ball.

[0012] As can be seen from the above, a wire drawing device for cold-drawn steel wire of an iron chain comprises a main bracket, a limiting mechanism is arranged on the main bracket, and the main bracket is connected to a wire drawing mechanism through the limiting mechanism, a bottom plate is fixed to the bottom end of the wire drawing mechanism, the wire drawing mechanism comprises a cover plate and a base, a spherical groove is arranged on the inner wall of the bottom end of the cover plate, and a second spherical groove is arranged on the inner wall of the top end of the base, a spherical center is arranged between the cover plate and the base, the inner wall of the spherical groove fits the outer wall of the spherical center, and a gap is arranged between the second spherical groove and the spherical center, a fixing mechanism is arranged on the inner wall of the spherical center, and The center of the ball is fixed with a wire drawing die at the center position through a fixing mechanism, the outer wall on the same side of the cover plate and the base is provided with an arc surface, and the two arc surfaces are respectively attached with a metal induction plate and a second metal induction plate, an indicator light is provided on one side of the base, and the indicator light is connected to the metal induction plate and the second metal induction plate circuit, the outer wall of the bottom end of the base is connected with a plurality of inner rods, and the outer wall of each inner rod is respectively movably sleeved with a sleeve, and the plurality of sleeves are fixed to the top of the bottom plate, and the center position of the bottom end of the base is connected with a cylinder, and the bottom end of the cylinder is fixed to the bottom plate. The cold-drawn steel wire drawing device for iron chains provided by the present invention has the technical effect of solving the defect of uneven wear of the core of the wire drawing die during the wire drawing production process, and the service life of the wire drawing die is increased by more than double. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The present invention is a schematic diagram of the overall structure of a cold-drawn steel wire drawing device for an iron chain.

[0014] Figure 2 This is a schematic structural diagram of the open state of the limiting mechanism and the wire drawing mechanism of the iron chain cold-drawn steel wire drawing device proposed by the present invention.

[0015] Figure 3This is a schematic diagram of the split structure of the ball core and the drawing die of the iron chain cold-drawn steel wire drawing device proposed by the present invention.

[0016] Figure 4 This is a schematic diagram of the internal connection structure of the ball center of an iron chain cold-drawn steel wire drawing device proposed by the present invention.

[0017] Figure 5 This is a schematic diagram of the split structure of the limit block of the iron chain cold-drawn steel wire drawing device proposed by the present invention.

[0018] Figure 6 This is a schematic diagram of the disassembled cross frame and cover plate connection structure of an iron chain cold-drawn steel wire drawing device proposed by the present invention.

[0019] Figure 7 This is a cross-sectional view of a cross-section of a cold-drawn steel wire drawing device for an iron chain proposed by the present invention.

[0020] In the figure: 1, main bracket; 2, limit mechanism; 3, wire drawing mechanism; 4, bottom plate; 201, semicircular limit hole; 202, support frame; 203, cross frame; 204, limit pin; 205, semicircular support plate; 206, second semicircular limit hole; 207, circular limit hole; 301, metal induction plate; 302, spherical groove; 303, card slot; 304, cover plate; 305, base; 306, indicator light; 307, sleeve; 308, inner rod; 309, second metal induction Plate; 310, second spherical groove; 311, drawing die; 312, ball center; 313, hemispherical support block; 314, second hemispherical support block; 315, slide groove; 316, plug rod; 317, limit block; 318, mounting groove; 319, second slide groove; 320, limit groove; 321, slot; 322, push block; 323, spring; 324, push frame; 325, support plate; 326, hole; 327, second spring; 328, inner sleeve; 329, cylinder. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] The invention discloses a chain cold-drawn steel wire drawing device which is mainly used in the scene of steel wire cold drawing.

[0023] Reference Figure 1 and Figure 2A wire drawing device for cold-drawn steel wire of an iron chain comprises a main support 1, a limiting mechanism 2 is arranged on the main support 1, and the main support 1 is connected with a wire drawing mechanism 3 through the limiting mechanism 2, a bottom plate 4 is fixed to the bottom end of the wire drawing mechanism 3, the wire drawing mechanism 3 comprises a cover plate 304 and a base 305, a spherical groove 302 is arranged on the inner wall of the bottom end of the cover plate 304, and a second spherical groove 310 is arranged on the inner wall of the top end of the base 305, a ball center 312 is arranged between the cover plate 304 and the base 305, the inner wall of the spherical groove 302 is in contact with the outer wall of the ball center 312, and a gap is arranged between the second spherical groove 310 and the ball center 312, and the ball center The inner wall of the ball 312 is provided with a fixing mechanism, and the ball center 312 is fixed with a wire drawing die 311 at the center position through the fixing mechanism. The outer walls on the same side of the cover plate 304 and the base 305 are provided with an arc surface, and the two arc surfaces are respectively attached with a metal induction plate 301 and a second metal induction plate 309. An indicator light 306 is provided on one side of the base 305, and the indicator light 306 is connected to the metal induction plate 301 and the second metal induction plate 309. The outer wall of the bottom end of the base 305 is connected with a plurality of inner rods 308, and the outer wall of each inner rod 308 is respectively movably sleeved with a sleeve 307, and the plurality of sleeves 307 are fixed on the bottom. The top of the plate 4 and the center of the bottom of the base 305 are connected with a cylinder 329, and the bottom end of the cylinder 329 is fixed on the bottom plate 4. When the steel wire passes through the wire drawing die 311 for cold drawing, the ball center 312 is movably arranged between the cover plate 304 and the base 305, and the ball center 312 is attached to the inner wall of the cover plate 304. A gap is set between the base 305 and the ball center to ensure the relative movement of the ball center 312 on the base 305. Further, during the wire drawing process, the ball center 312 moves with the movement of the wire drawing direction to ensure that the center position of the wire drawing die 311 and the wire drawing direction remain in the same direction. The wire drawing die 311 is arranged on a straight line, which solves the defect of uneven wear of the core of the wire drawing die 311 during the wire drawing production process, and the service life of the wire drawing die is more than doubled. At the same time, if the wire drawing direction deviates too much and makes the steel wire contact the metal induction plate 301 or the second metal induction plate 309, the wire drawing die 311 is driven to move up or down a short distance under the action of the cylinder 329. Under the action of the sleeve 307 and the inner rod 308, the push of the cylinder 329 is made more stable, so as to expand the adaptability range of the wire drawing die 311, avoid the wire drawing direction displacement beyond the movement range of the ball center 312, and ensure that the rotation of the wire drawing die 311 can be carried out normally.

[0024] Reference Figure 3 and Figure 4In a preferred embodiment, the fixing mechanism includes a plurality of rods 316, and the plurality of rods 316 are symmetrically distributed on both sides of the wire drawing die 311, the ball center 312 includes a hemispherical support block 313 and a second hemispherical support block 314, a plurality of slots 321 are provided on the inner wall on one side of the hemispherical support block 313, and the plurality of rods 316 on one side of the wire drawing die 311 are inserted into the plurality of slots 321, a plurality of grooves 315 are provided on the inner wall on the opposite side of the second hemispherical support block 314, and the plurality of rods 316 on the other side of the wire drawing die 311 are movably connected in the plurality of grooves 315.

[0025] Reference Figure 3 and Figure 5 In a preferred embodiment, two inner sleeves 328 are fixedly connected to the inner outer wall of the second hemispherical support block 314, and the two inner sleeves 328 are symmetrically distributed in the upper and lower positions. The inner walls of the two inner sleeves 328 are provided with second springs 327, and one end of the second spring 327 is connected to the limiting block 317. The inner wall of the hemispherical support block 313 is provided with two second sliding grooves 319, and the two second sliding grooves 319 are relatively distributed.

[0026] Reference Figure 4 In a preferred embodiment, a limiting groove 320 is respectively provided at one end of the two slide grooves 319, and the limiting block 317 is clamped in the limiting groove 320. An installation groove 318 is provided between the two limiting grooves 320, and push blocks 322 are respectively provided on both sides of the installation groove 318, and the push blocks 322 pass through the limiting groove 320.

[0027] Reference Figure 4 In a preferred embodiment, the outer walls of the same side of the two push blocks 322 are connected with a support plate 325 , and the two support plates 325 are simultaneously connected with a push frame 324 , and the push frame 324 is disposed in the installation slot 318 .

[0028] Reference Figure 4In a preferred embodiment, a spring 323 is provided on the outer circumference of the two push blocks 322, and one end of the spring 323 is fixed to the outer wall of one side of the mounting groove 318, and a hole 326 is provided on the inner wall of one side of the hemispherical support block 313, and the hole 326 corresponds to the middle section of the push frame 324. When the wire drawing die 311 is installed, the rod 316 is fixed in the slot 321, and the second hemispherical support block 314 is closed, so that the limit block 317 moves along the second slide groove 319. After moving to the position of the limit groove 320, the second spring 327 is pulled open for limiting, and the installation is completed quickly. When the wire drawing die 311 is disassembled, the tool is inserted into the hole 326 to push the push rack 324. At the same time, the spring 323 is compressed, so that the push block 322 pushes the limit block 317, and the second hemisphere support block 314 is moved to complete the disassembly. The push rack 324 can act on the two limit blocks 317 at the same time, thereby reducing the difficulty of disassembly and improving the disassembly efficiency of the ball center 312.

[0029] Reference Figure 2 , Figure 6 and Figure 7 In a preferred embodiment, a card slot 303 is provided at the bottom end of the cover plate 304, the limiting mechanism 2 includes a cross frame 203, and the cross frame 203 is movably connected in the card slot 303, a support frame 202 is connected between the cross frame 203 and the main bracket 1, and one side of the cover plate 304 is connected to the cross frame 203 through a hinge.

[0030] Reference Figure 2 , Figure 6 and Figure 7 In a preferred embodiment, the inner wall of the cover plate 304 is provided with a semicircular limiting hole 201, and the inner wall of the cross frame 203 is also provided with a second semicircular limiting hole 206, and the semicircular limiting hole 201 and the second semicircular limiting hole 206 are both provided with a limiting nail 204, one end of the limiting nail 204 is connected to a semicircular support plate 205, and the inner wall of the cross frame 203 is provided with a circular limiting hole 207, and the circular limiting hole 207 is connected to the second semicircular limiting hole 206. When the ball center 312 is installed, the cover plate 304 is separated from the cross frame 203 by removing the limiting nail 204, and fixed After the ball center 312 is located, the cover plate 304 is covered on the cross frame 203, and the cross frame 203 and the support frame 202 support the cover plate 304, thereby ensuring the stable support of the cover plate 304. After fixing, the limiting nail 204 is inserted into the semicircular limiting hole 210 and the second semicircular limiting hole 206, and the limiting nail 204 is rotated to move the semicircular support plate 205 to the circular limiting hole 207 to fix the position of the limiting nail 204, thereby completing the installation of the ball center 312. While ensuring the stability of the fixation, the entire structure also reduces the difficulty of installation, which is conducive to improving the installation efficiency of the ball center 312.

[0031] Working principle: During the preparation work, when installing the ball center 312, the limit pin 204 is removed to separate the cover plate 304 from the cross frame 203. After fixing the ball center 312, the cover plate 304 is covered on the cross frame 203, and the cross frame 203 and the support frame 202 support the cover plate 304, thereby ensuring the stable support of the cover plate 304. After fixing, the limit pin 204 is inserted into the semicircular limit hole 210 and the second semicircular limit hole 206, and the semicircular support plate 205 is moved to the circular limit hole 207 by rotating the limit pin 204 to fix the position of the limit pin 204, thereby completing the installation of the ball center 312. The entire structure not only ensures stable fixation, but also reduces the difficulty of installation, which is conducive to improving the installation efficiency of the ball center 312. When installing the wire drawing die 311, by fixing the insertion rod 316 in the slot 321 and closing the second hemispherical support block 314, the limit block 317 moves along the second slide groove 319 to the position of the limit groove 320, and then the second spring 327 is pulled open for limiting, that is, the installation is completed quickly. When disassembling the wire drawing die 311, a tool is inserted into the hole 326 to push the push frame 324. At the same time, the spring 323 is compressed, so that the push block 322 pushes the limit block 317 and moves the second hemispherical support block. The disassembly can be completed by pushing the push frame 324 on the two limit blocks 317 at the same time, thereby reducing the difficulty of disassembly and improving the disassembly efficiency of the ball core 312. When the steel wire passes through the wire drawing die 311 for cold drawing, the ball core 312 is movably arranged between the cover plate 304 and the base 305, and the ball core 312 is fitted with the inner wall of the cover plate 304. A gap is provided between the base 305 and the ball core to ensure the relative movement of the ball core 312 on the base 305. Further, during the wire drawing process, the ball core 312 moves with the movement of the wire drawing direction to ensure that the center position of the wire drawing die 311 is aligned with the wire drawing direction. The drawing die 311 is kept in the same straight line, which solves the defect of uneven wear of the core of the drawing die 311 during the wire drawing production process, and the service life of the drawing die is more than doubled. At the same time, if the drawing direction deviates too much and the steel wire contacts the metal induction plate 301 or the second metal induction plate 309, the cylinder 329 drives the drawing die 311 to move up or down a short distance. Under the action of the sleeve 307 and the inner rod 308, the push of the cylinder 329 is more stable, so as to expand the adaptability range of the drawing die 311, avoid the displacement of the drawing direction beyond the movement range of the ball center 312, and ensure that the rotation of the drawing die 311 can be carried out normally.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A cold-drawn steel wire drawing device for an iron chain, comprising a main support (1), characterized in that: The main support (1) is provided with a limiting mechanism (2), and the main support (1) is connected to a wire drawing mechanism (3) through the limiting mechanism (2), a bottom plate (4) is fixed to the bottom end of the wire drawing mechanism (3), the wire drawing mechanism (3) comprises a cover plate (304) and a base (305), a spherical groove (302) is provided on the inner wall of the bottom end of the cover plate (304), and a second spherical groove (310) is provided on the inner wall of the top end of the base (305), a spherical center (312) is provided between the cover plate (304) and the base (305), the inner wall of the spherical groove (302) is in contact with the outer wall of the spherical center (312), and a gap is provided between the second spherical groove (310) and the spherical center (312), the inner wall of the spherical center (312) is provided with a fixing mechanism, and the spherical center (312) is fixed in the middle by the fixing mechanism. A wire drawing die (311) is fixed at the center position, the outer walls on the same side of the cover plate (304) and the base (305) are provided with an arc surface, and the two arc surfaces are respectively attached to the metal induction plate (301) and the second metal induction plate (309), an indicator light (306) is provided on one side of the base (305), and the indicator light (306) is connected to the metal induction plate (301) and the second metal induction plate (309) by lines, a plurality of inner rods (308) are connected to the outer wall of the bottom end of the base (305), and the outer wall of each inner rod (308) is movably sleeved with a sleeve (307), and the plurality of sleeves (307) are fixed to the top of the bottom plate (4), and a cylinder (329) is connected to the center position of the bottom end of the base (305), and the bottom end of the cylinder (329) is fixed to the bottom plate (4); The fixing mechanism includes a plurality of insert rods (316), and the plurality of insert rods (316) are symmetrically distributed on both sides of the wire drawing die (311), the spherical center (312) includes a hemispherical support block (313) and a second hemispherical support block (314), a plurality of slots (321) are arranged on an inner wall of one side of the hemispherical support block (313), and the plurality of insert rods (316) on one side of the wire drawing die (311) are inserted into the plurality of slots (321), a plurality of slide grooves (315) are arranged on an inner wall of an opposite side of the second hemispherical support block (314), and the plurality of insert rods (316) on the other side of the wire drawing die (311) are movably connected in the plurality of slide grooves (315); The inner outer wall of the second hemispherical support block (314) is fixedly connected with two inner sleeves (328), and the two inner sleeves (328) are symmetrically distributed in the upper and lower positions; the inner walls of the two inner sleeves (328) are provided with second springs (327), and one end of the second spring (327) is connected to the limiting block (317); the inner wall of the hemispherical support block (313) is provided with two second sliding grooves (319), and the two second sliding grooves (319) are relatively distributed; One end of the two slide grooves (319) is respectively provided with a limiting groove (320), the limiting block (317) is clamped in the limiting groove (320), an installation groove (318) is provided between the two limiting grooves (320), and push blocks (322) are respectively provided on both sides of the installation groove (318), and the push blocks (322) pass through the limiting grooves (320); The outer walls of the two push blocks (322) on the same side are connected with a support plate (325), and the two support plates (325) are simultaneously connected with a push frame (324), and the push frame (324) is arranged in the installation groove (318); A spring (323) is arranged on the outer periphery of the two push blocks (322), and one end of the spring (323) is fixed to an outer wall of one side of the mounting groove (318); a hole (326) is arranged on an inner wall of one side of the hemispherical support block (313), and the hole (326) corresponds to the middle section of the push frame (324).

2. The cold-drawn steel wire drawing device for an iron chain according to claim 1, characterized in that: A slot (303) is provided at the bottom end of the cover plate (304); the limiting mechanism (2) comprises a cross frame (203), and the cross frame (203) is movably engaged in the slot (303); a support frame (202) is connected between the cross frame (203) and the main support (1); and one side of the cover plate (304) is connected to the cross frame (203) via a hinge.

3. The cold-drawn steel wire drawing device for an iron chain according to claim 2, characterized in that: The inner wall of the cover plate (304) is provided with a semicircular limiting hole (201), and the inner wall of the cross frame (203) is simultaneously provided with a second semicircular limiting hole (206), and limiting pins (204) are simultaneously provided in the semicircular limiting hole (201) and the second semicircular limiting hole (206), one end of the limiting pin (204) is connected to a semicircular supporting plate (205), and the inner wall of the cross frame (203) is provided with a circular limiting hole (207), and the circular limiting hole (207) is connected to the second semicircular limiting hole (206).

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