A drawing machine for producing stainless steel wire

Abstract

The present invention discloses a drawing and forming machine for stainless steel wire production, and the present invention relates to the technical field of stainless steel wire production, including a fixed plate, a connecting rod is fixedly connected to the outer side of the fixed plate, a square groove is opened on the outer side of the fixed plate, the inner wall of the square groove is rotatably connected to a limit plate, the limit plate is fixedly connected to a support plate at one end close to the fixed plate, a round rod is slidably connected to the outer side of the fixed plate, and the round rod is rotatably connected to the limit wheel at the outer side away from the middle of the fixed plate. The drawing and forming machine for stainless steel wire production drives the wire at the end of the intermediate component to move upward on the outer side of the drum through the rotation of the limit plate, so that the wire being drawn is located on the same horizontal plane, avoiding the change of the path of the wire in the drawing process, and then making the tension on the wire uneven, which may make the diameter of the drawn wire inconsistent, some areas are too thin, and some areas are too thick, affecting the dimensional accuracy and uniformity of the wire.

Description

Technical Field

[0001] The invention relates to the technical field of stainless steel wire production, in particular to a drawing forming machine for stainless steel wire production. Background Art

[0002] Wire rod is the smallest cross-sectional size among hot-rolled steel sections. In my country, hot-rolled round steel with a diameter of 5 to 9 mm and eight specifications is called wire rod. The wire drawing process is a processing technology that changes the outer diameter of the wire rod to the required size. Stainless steel wire is also called stainless steel wire. Stainless steel wire can be used as raw material to make various silk products of different specifications and models. In the process of producing stainless steel wire, special wire drawing equipment is needed to draw the stainless steel wire into a diameter, roundness, internal metallographic structure, surface finish and straightness that meet the corresponding standard requirements.

[0003] When drawing stainless steel wires, since the wires between the guides are not at the same level, the path of the wires during the drawing process will change, resulting in uneven tension on the wires. This may cause inconsistent diameters of the drawn wires, with some areas being too thin and some areas being too thick, affecting the dimensional accuracy and uniformity of the wires. Summary of the invention

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a drawing and forming machine for stainless steel wire production, comprising a platform, the top of the platform is rotatably connected to a protective cover, and the protective cover is provided to prevent uneven tension and abnormal friction from causing the wire to suddenly break during the wire drawing process, causing the broken wire to be ejected at high speed, which may cause harm to the operator, the outer side of the platform is rotatably connected to a winding roller, one end of the platform close to the winding roller is fixedly connected to a motor, the output end of the motor is fixedly connected to the winding roller, and the side of the platform away from the winding roller is rotatably connected to a wire pay-off roller;

[0005] A limit assembly, wherein the limit assembly is fixedly mounted on the top of the platform;

[0006] An intermediate component, wherein the intermediate component is fixedly mounted on the top of the platform;

[0007] An adjusting component, the adjusting component is located between the limiting component and the intermediate component, and the adjusting component is fixedly connected to the intermediate component;

[0008] Wherein, the adjusting component includes a fixed plate, the outer side of the fixed plate is fixedly connected with a connecting rod, there are two fixed plates, the two fixed plates are symmetrically arranged with the connecting rod as the center, a square groove is opened on the outer side of the fixed plate, the stainless steel wire on the wire-releasing roller passes through the limiting component, then passes through the adjusting component, and then passes through the intermediate component, and finally is wound onto the winding roller. When working, the motor is connected to the external power supply, and the motor drives the winding roller to rotate, so that the stainless steel wire is wound. Since the stainless steel wire passing through the middle of the cylinder is not at the same horizontal height as the intermediate component, the stainless steel wire passes through the middle of the two limiting wheels. When the cylinder is higher than the intermediate component, the stainless steel wire exerts a force on the limiting wheel, and the limiting wheel drives the round rod to move downward, so that the round rod exerts a force on the supporting plate. The round rod exerts a force on the supporting plate, and the limiting plate rotates to push the wire at the end of the intermediate component. The outer side of the drum moves upward so that the drawn wires are located on the same horizontal plane, avoiding changes in the path of the wires during the drawing process, and thus making the tension on the wires uneven, which may cause inconsistent diameters of the drawn wires, with some areas being too thin and some areas being too thick, affecting the dimensional accuracy and uniformity of the wires. The inner wall of the square groove is rotatably connected to a limiting plate, and the end of the limiting plate close to the fixed plate is fixedly connected to a supporting plate, and the outer side of the fixed plate is slidably connected to a round rod, which passes through the fixed plate, and the outer side of the round rod away from the middle of the fixed plate is rotatably connected to a limiting wheel, and a reset spring is fixedly connected to the outer side of the round rod, and the stainless steel wire is guided and limited by two limiting wheels, and the end of the reset spring away from the round rod is fixedly connected to the fixed plate, and the round rod and the supporting plate are located on the same vertical line, and the reset spring is symmetrically arranged with the limiting wheel as the center.

[0009] Preferably, the intermediate component includes a circular plate, which is fixedly connected to the platform, and a fixing rod is fixedly connected to the top of the circular plate, and a roller is rotatably connected to the middle outer side of the fixing rod, and a limiting seat is fixedly connected to the outer side of the fixing rod. There are two limiting seats, and the two limiting seats are symmetrically arranged with the roller as the center. The inner cavity of the limiting seat is rotatably connected to the outer side of the roller, and the elastic properties of the compression spring are utilized to make the fixing ring limit the stainless steel wire wound on the roller up and down to prevent the wire on the roller from moving up and down, so that the wire in the middle of the component is not in the same horizontal plane, causing the running trajectory of the wire between the cylinder and the roller to deviate from the designed route, which will cause abnormal friction and collision between the wire and the adjustment component, cylinder edge, fixing ring and other parts of the equipment. In the long run, these components will be damaged due to excessive wear, shortening the service life of the equipment, a through slot is provided on the outer side of the limit seat, and there are multiple through slots, which are evenly distributed around the fixed rod, and a compression spring is fixedly connected to the outer side of the limit seat, and the compression spring is located inside the through slot, and a fixing ring is slidably connected to the inner wall of the through slot, and the fixing ring is fixedly connected to the end of the compression spring away from the limit seat, and the side of the fixing ring close to the roller is fixedly connected to the limiting rod. By setting the limiting rod, the wire wound on the outer side of the roller is limited to avoid stacking of the wire on the roller. The wire is entangled, which requires frequent shutdowns to adjust, repair and replace parts of the equipment, which will cause production interruptions and reduce production efficiency.

[0010] Preferably, the limiting assembly includes a vertical plate, the vertical plate is fixedly connected to the platform, a supporting ring is fixedly connected to the middle of the vertical plate, a through hole is opened vertically through the supporting ring and the vertical plate, a guide assembly is arranged inside the through hole, a cooling pipe is arranged on the outside of the guide assembly, the cooling pipe is fixedly connected to the vertical plate, and the inner wall of the supporting ring is fixedly connected to the limiting ring.

[0011] Preferably, the guide assembly includes a cylinder, the cylinder is fixedly connected to the supporting ring, the outer side of the cylinder is fixedly connected to a shell, the interior of the shell is filled with lubricating oil, and the use of lubricating oil instead of soap powder can effectively prevent the soap powder from absorbing heat and coking, the stainless steel wire passes through the sealing plate and is deformed by heat, and is then lubricated and cooled by the lubricating oil, the roller limits the displacement in the axial direction of the cylinder, the stainless steel wire passes through the rotating drum, the wire drives the rotating drum to rotate, and the rotating drum drives the spiral plate to rotate, so that the lubricating oil near the wire in the shell moves outward with the spiral plate, so that the cooling pipe cools the lubricating oil carrying heat, thereby accelerating the cooling of the stainless steel wire, there are two cylinders, the two cylinders are symmetrically arranged with the shell as the center, and the end of the through hole close to the cylinder is fixedly connected to a connecting plate, The end of the connecting plate away from the through hole is rotatably connected to a roller, there are two rollers, and the two rollers are symmetrically arranged on the inner wall of the cylinder, the cylinder is fixedly connected to a sealing plate close to the inner wall of the shell, and the end of the sealing plate close to the shell is fixedly connected to a sealing block, and the sealing plate and the sealing block are concave-convexly matched. By arranging the sealing plate and the sealing block, the lubricating oil inside the shell is prevented from overflowing, and the excess lubricating oil on the steel wire is scraped off by the sealing plate and the sealing block, the inner wall of the shell is rotatably connected to a rotating rod, the outer side of the rotating rod is fixedly connected to a rotating drum, and a groove is provided in the middle of the rotating drum, there are two rotating rods, which are symmetrically arranged inside the shell, and the groove on the rotating drum limits the wire, and the outer side of the rotating drum is fixedly connected to a spiral plate, and the spiral plate is located on both sides of the rotating drum.

[0012] The present invention provides a drawing machine for producing stainless steel wires. It has the following beneficial effects:

[0013] 1. The drawing machine for the production of stainless steel wires pushes the wire at the end of the intermediate component upward on the outside of the drum by rotating the limit plate, so that the drawn wires are located on the same horizontal plane, avoiding changes in the path of the wires during the drawing process, and thus making the tension on the wires uneven. This may cause the diameter of the drawn wires to be inconsistent, with some areas being too thin and some areas being too thick, affecting the dimensional accuracy and uniformity of the wires.

[0014] Second, the drawing machine for stainless steel wire production uses a fixed ring to limit the upper and lower positions of the stainless steel wire wound on the drum to prevent the wire on the drum from moving up and down, so that the wire in the middle of the assembly is not on the same horizontal plane, causing the running track of the wire between the cylinder and the drum to deviate from the designed route, which will cause abnormal friction and collision between the wire and the equipment's adjustment components, cylinder edges, fixed rings and other parts. In the long run, these parts will be damaged due to excessive wear, shortening the service life of the equipment.

[0015] 3. The drawing machine for producing stainless steel wires sets a limit rod to limit the wires wrapped around the outside of the drum to avoid wire stacking on the drum. The wires become tangled, which requires frequent shutdowns to adjust, repair and replace parts of the equipment, which will cause production interruptions and reduce production efficiency.

[0016] 4. The drawing machine for producing stainless steel wire is used in which the stainless steel wire passes through a sealing plate to be deformed by heat, and then is lubricated and cooled by lubricating oil. The roller limits the displacement in the axial direction of the cylinder. The stainless steel wire passes through a rotating drum, and the wire drives the rotating drum to rotate. At this time, the rotating drum drives the spiral plate to rotate, so that the lubricating oil near the wire in the outer shell moves outward with the spiral plate, so that the cooling pipe cools the lubricating oil carrying heat, thereby accelerating the cooling of the stainless steel wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the external structure of a drawing machine for producing stainless steel wires according to the present invention;

[0018] Figure 2 It is a schematic diagram of the local structure of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of the regulating component of the present invention;

[0020] Figure 4 It is a schematic diagram of the structure of the intermediate component of the present invention;

[0021] Figure 5 It is a schematic diagram of the cross-sectional structure of the intermediate component of the present invention;

[0022] Figure 6 It is a schematic diagram of the structure of the limit assembly of the present invention;

[0023] Figure 7 It is a schematic diagram of the local structure of the limit assembly of the present invention;

[0024] Figure 8 It is a schematic diagram of the cross-sectional structure of the guide assembly of the present invention.

[0025] In the figure: 1. platform; 2. winding roller; 3. motor; 4. protective cover; 5. pay-off roller; 6. limit assembly; 61. vertical plate; 62. supporting ring; 63. through hole; 64. guide assembly; 641. cylinder; 642. shell; 643. connecting plate; 644. roller; 645. sealing plate; 646. sealing block; 647. rotating rod; 648. rotating drum; 649. spiral plate; 65. cooling pipe; 66. limit ring; 7. intermediate assembly; 71. round plate; 72. fixing rod; 73. roller; 74. limit seat; 75. through groove; 76. fixing ring; 77. compression spring; 78. limit rod; 8. adjustment assembly; 81. fixing plate; 82. limit plate; 83. supporting plate; 84. connecting rod; 85. square groove; 86. limit wheel; 87. reset spring; 88. round rod. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0027] The first embodiment, as Figures 1 to 3 As shown, the present invention provides a technical solution: a drawing and forming machine for producing stainless steel wire, comprising a platform 1, the top of the platform 1 is rotatably connected to a protective cover 4, by setting the protective cover 4, uneven tension and abnormal friction can be avoided, which may cause the wire to break suddenly during the wire drawing process, causing the broken wire to be ejected at high speed, which may cause harm to the operator, the outer side of the platform 1 is rotatably connected to a winding roller 2, one end of the platform 1 close to the winding roller 2 is fixedly connected to a motor 3, the output end of the motor 3 is fixedly connected to the winding roller 2, and the side of the platform 1 away from the winding roller 2 is rotatably connected to a wire unwinding roller 5;

[0028] A limit assembly 6, the limit assembly 6 is fixedly mounted on the top of the platform 1;

[0029] An intermediate component 7, which is fixedly mounted on the top of the platform 1;

[0030] An adjusting component 8, the adjusting component 8 is located between the limiting component 6 and the intermediate component 7, and the adjusting component 8 is fixedly connected to the intermediate component 7;

[0031] Among them, the adjusting component 8 includes a fixed plate 81, and a connecting rod 84 is fixedly connected to the outer side of the fixing plate 81. There are two fixing plates 81, and the two fixing plates 81 are symmetrically arranged with the connecting rod 84 as the center. A square groove 85 is opened on the outer side of the fixing plate 81, and the stainless steel wire on the wire-releasing roller 5 passes through the limiting component 6, then passes through the adjusting component 8, and then passes through the intermediate component 7, and finally is wound onto the winding roller 2. When working, the motor 3 is connected to an external power supply to work, and the motor 3 drives the winding roller 2 to rotate, and then the stainless steel wire is wound. Since the stainless steel wire passing through the middle of the cylinder 641 is not at the same horizontal height as the intermediate component 7, the stainless steel wire passes through the middle of the two limiting wheels 86. When the cylinder 641 is higher than the intermediate component 7, the stainless steel wire exerts a force on the limiting wheel 86, and the limiting wheel 86 drives the round rod 88 to move downward, so that the round rod 88 exerts a force on the supporting plate 83, and the round rod 88 exerts a force on the supporting plate 83, and the limiting plate 82 rotates to push the intermediate component The wire at the end of piece 7 moves upward on the outside of the drum 73, so that the drawn wire is located on the same horizontal plane, avoiding changes in the path of the wire during the drawing process, and thus making the tension on the wire uneven, which may make the diameter of the drawn wire inconsistent, some areas are too thin, and some areas are too thick, affecting the dimensional accuracy and uniformity of the wire. The inner wall of the square groove 85 is rotatably connected to the limit plate 82, and the end of the limit plate 82 close to the fixed plate 81 is fixedly connected to the support plate 83, and the outer side of the fixed plate 81 is slidably connected to a round rod 88, the round rod 88 penetrates the fixed plate 81, and the outer side of the round rod 88 is rotatably connected to the limit wheel 86 away from the middle of the fixed plate 81. The outer side of the round rod 88 is fixedly connected to a return spring 87, and the stainless steel wire is guided and limited by two limit wheels 86. The end of the return spring 87 away from the round rod 88 is fixedly connected to the fixed plate 81, and the round rod 88 and the support plate 83 are located on the same vertical line. The return spring 87 is symmetrically arranged with the limit wheel 86 as the center.

[0032] The second embodiment is based on the first embodiment. Figures 4 to 5As shown, the intermediate component 7 includes a circular plate 71, which is fixedly connected to the platform 1. A fixing rod 72 is fixedly connected to the top of the circular plate 71. A roller 73 is rotatably connected to the middle of the outer side of the fixing rod 72. A limiting seat 74 is fixedly connected to the outer side of the fixing rod 72. There are two limiting seats 74. The two limiting seats 74 are symmetrically arranged with the roller 73 as the center. The inner cavity of the limiting seat 74 is rotatably connected to the outer side of the roller 73. The elastic properties of the compression spring 77 are utilized to make the fixing ring 76 limit the stainless steel wire wound on the roller 73 up and down to prevent the wire on the roller 73 from moving up and down, so that the wire in the middle of the component is not in the same horizontal plane, resulting in the running trajectory of the wire between the cylinder 641 and the roller 73 deviating from the designed route, which will cause abnormal friction and collision between the wire and the adjustment component of the equipment, the edge of the cylinder 641, the fixing ring 76 and other parts. In the long run, these components will be damaged due to excessive wear, shortening the service life of the equipment. A through slot 75 is provided on the outer side of the limit seat 74. There are multiple through slots 75, and the multiple through slots 75 are evenly distributed around the fixing rod 72. A compression spring 77 is fixedly connected to the outer side of the limit seat 74. The compression spring 77 is located inside the through slot 75. A fixing ring 76 is slidably connected to the inner wall of the through slot 75. The fixing ring 76 is fixedly connected to the end of the compression spring 77 away from the limit seat 74. The side of the fixing ring 76 close to the roller 73 is fixedly connected to a limiting rod 78. By setting the limiting rod 78, the wire wound on the outer side of the roller 73 is limited to avoid the wire stacking on the roller 73. The wire is entangled, which requires frequent shutdowns to adjust, repair and replace parts of the equipment, which will cause production interruptions and reduce production efficiency.

[0033] The third embodiment is based on the first and second embodiments. Figures 6 to 8 As shown, the limiting assembly 6 includes a vertical plate 61, which is fixedly connected to the platform 1, and a supporting ring 62 is fixedly connected to the middle of the vertical plate 61. A through hole 63 is provided vertically between the supporting ring 62 and the vertical plate 61, and a guide assembly 64 is provided inside the through hole 63. A cooling pipe 65 is provided on the outer side of the guide assembly 64, and the cooling pipe 65 is fixedly connected to the vertical plate 61. The inner wall of the supporting ring 62 is fixedly connected to a limiting ring 66.

[0034] The guide assembly 64 includes a cylinder 641, which is fixedly connected to the support ring 62. The outer side of the cylinder 641 is fixedly connected to a shell 642. The interior of the shell 642 is filled with lubricating oil. The use of lubricating oil instead of soap powder can effectively prevent the soap powder from absorbing heat and coking. The stainless steel wire passes through the sealing plate 645 and is deformed by heat, and is then lubricated and cooled by the lubricating oil. The roller 644 limits the displacement in the axial direction of the cylinder. The stainless steel wire passes through the rotating drum 648, and the wire drives the rotating drum 648 to rotate. At this time, the rotating drum 648 drives the spiral plate 649 to rotate, so that the lubricating oil near the wire in the shell 642 moves outward with the spiral plate 649, so that the cooling pipe 65 cools the lubricating oil carrying heat, thereby accelerating the cooling of the stainless steel wire. There are two cylinders 641, and the two cylinders 641 are symmetrically arranged with the shell 642 as the center. The end of the through hole 63 close to the cylinder 641 is fixedly connected to a connecting plate 643, and the end of the connecting plate 643 away from the through hole 63 rotates The cylinder 641 is connected to the inner wall of the cylinder 641, and there are two rollers 644. The two rollers 644 are symmetrically arranged on the inner wall of the cylinder 641. The inner wall of the cylinder 641 close to the outer shell 642 is fixedly connected with a sealing plate 645. One end of the sealing plate 645 close to the outer shell 642 is fixedly connected with a sealing block 646. The sealing plate 645 and the sealing block 646 are matched with each other. By setting the sealing plate 645 and the sealing block 646, the lubricating oil inside the outer shell 642 is prevented from overflowing. The five sealing blocks 646 scrape off the excess lubricating oil on the steel wire. The inner wall of the outer shell 642 is rotatably connected to a rotating rod 647, and the outer side of the rotating rod 647 is fixedly connected to a rotating drum 648. A groove is provided in the middle of the rotating drum 648. There are two rotating rods 647, and the two rotating rods 647 are symmetrically arranged inside the outer shell 642. The groove on the rotating drum 648 limits the wire. The outer side of the rotating drum 648 is fixedly connected to a spiral plate 649, and the spiral plate 649 is located on both sides of the rotating drum 648.

[0035] When in use, the stainless steel wire on the pay-off roller 5 passes through the limiting component 6, then passes through the adjusting component 8, and then passes through the intermediate component 7, and finally is wound onto the winding roller 2. When working, the motor 3 is connected to an external power supply to work, and the motor 3 drives the winding roller 2 to rotate, and then the stainless steel wire is wound. Since the stainless steel wire passing through the middle of the cylinder 641 is not at the same horizontal height as the intermediate component 7, the stainless steel wire passes through the middle of the two limiting wheels 86. When the cylinder 641 is higher than the intermediate component 7, the stainless steel wire exerts a force on the limiting wheel 86, and the limiting wheel 86 drives the round rod 88 to move downward, so that the round rod 88 exerts a force on the supporting plate 83. The round rod 88 exerts a force on the supporting plate 83, and the limiting plate 82 rotates to push the wire at the end of the intermediate component 7 to move upward on the outside of the drum 73.

[0036] The interior of the outer shell 642 is filled with lubricating oil. Using lubricating oil instead of soap powder can effectively prevent the soap powder from absorbing heat and coking. The stainless steel wire passes through the sealing plate 645 and is deformed by heat, and is then lubricated and cooled by the lubricating oil. The roller 644 limits the displacement in the axial direction of the cylinder. The stainless steel wire passes through the rotating drum 648, and the wire drives the rotating drum 648 to rotate. At this time, the rotating drum 648 drives the spiral plate 649 to rotate, so that the lubricating oil near the wire in the outer shell 642 moves outward along the spiral plate 649, so that the cooling pipe 65 cools the lubricating oil carrying heat.

[0037] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A drawing machine for producing stainless steel wire, characterized in that: include: A platform (1), wherein the top of the platform (1) is rotatably connected to a protective cover (4), the outer side of the platform (1) is rotatably connected to a winding roller (2), an end of the platform (1) close to the winding roller (2) is fixedly connected to a motor (3), an output end of the motor (3) is fixedly connected to the winding roller (2), and a side of the platform (1) away from the winding roller (2) is rotatably connected to a pay-off roller (5); A limit assembly (6), wherein the limit assembly (6) is fixedly mounted on the top of the platform (1); An intermediate component (7), wherein the intermediate component (7) is fixedly mounted on the top of the platform (1); an adjusting component (8), the adjusting component (8) being located between the limiting component (6) and the intermediate component (7), and the adjusting component (8) being fixedly connected to the intermediate component (7); The adjustment assembly (8) comprises a fixing plate (81), the outer side of the fixing plate (81) is fixedly connected to a connecting rod (84), there are two fixing plates (81), the two fixing plates (81) are symmetrically arranged with the connecting rod (84) as the center, a square groove (85) is provided on the outer side of the fixing plate (81), the inner wall of the square groove (85) is rotatably connected to a limiting plate (82), one end of the limiting plate (82) close to the fixing plate (81) is fixedly connected to a supporting plate (83), and the fixing plate (81) A round rod (88) is slidably connected to the outer side, the round rod (88) penetrates the fixed plate (81), the outer side of the middle part of the round rod (88) away from the fixed plate (81) is rotatably connected to the limiting wheel (86), the outer side of the round rod (88) is fixedly connected to a return spring (87), one end of the return spring (87) away from the round rod (88) is fixedly connected to the fixed plate (81), the round rod (88) and the support plate (83) are located on the same vertical line, and the return spring (87) is symmetrically arranged with the limiting wheel (86) as the center; The intermediate component (7) comprises a circular plate (71), the circular plate (71) being fixedly connected to the platform (1), a fixing rod (72) being fixedly connected to the top of the circular plate (71), a roller (73) being rotatably connected to the middle of the outer side of the fixing rod (72), a limiting seat (74) being fixedly connected to the outer side of the fixing rod (72), two limiting seats (74) being symmetrically arranged with the roller (73) as the center, an inner cavity of the limiting seat (74) being rotatably connected to the outer side of the roller (73), and an outer portion of the limiting seat (74) being fixedly connected to the outer side of the roller (73). A through slot (75) is provided on the side, the number of the through slots (75) is multiple, and the multiple through slots (75) are evenly distributed with the fixing rod (72) as the center, the outer side of the limiting seat (74) is fixedly connected with a compression spring (77), the compression spring (77) is located inside the through slot (75), the inner wall of the through slot (75) is slidably connected with a fixing ring (76), the fixing ring (76) is fixedly connected to one end of the compression spring (77) away from the limiting seat (74), and the side of the fixing ring (76) close to the roller (73) is fixedly connected to the limiting rod (78); The limiting assembly (6) comprises a vertical plate (61), the vertical plate (61) is fixedly connected to the platform (1), a supporting ring (62) is fixedly connected to the middle of the vertical plate (61), a through hole (63) is provided in a vertical direction between the supporting ring (62) and the vertical plate (61), a guide assembly (64) is arranged inside the through hole (63), a cooling pipe (65) is arranged outside the guide assembly (64), the cooling pipe (65) is fixedly connected to the vertical plate (61), and a limiting ring (66) is fixedly connected to the inner wall of the supporting ring (62); The guide assembly (64) comprises a cylinder (641), the cylinder (641) is fixedly connected to the support ring (62), the outer side of the cylinder (641) is fixedly connected to a shell (642), there are two cylinders (641), and the two cylinders (641) are symmetrically arranged with the shell (642) as the center; One end of the through hole (63) close to the cylinder (641) is fixedly connected to a connecting plate (643), and one end of the connecting plate (643) away from the through hole (63) is rotatably connected to a roller (644). There are two rollers (644), which are symmetrically arranged on the inner wall of the cylinder (641). A sealing plate (645) is fixedly connected to the inner wall of the cylinder (641) close to the outer shell (642), and one end of the sealing plate (645) close to the outer shell (642) is fixedly connected to a sealing block (646). The inner wall of the outer shell (642) is rotatably connected to a rotating rod (647), and the outer side of the rotating rod (647) is fixedly connected to a rotating cylinder (648). The outer side of the rotating cylinder (648) is fixedly connected to a spiral plate (649), and the spiral plate (649) is located on both sides of the rotating cylinder (648).

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