Wedge-type cold rolling reel and coiler having same

Abstract

A wedge-type cold rolling reel and a coiler having same. The wedge-type cold rolling reel comprises wedge expansion and contraction assemblies (300) each comprising: a fixed wedge (310) fixed on a hollow main shaft (100); a movable wedge (320) that mates with and moves relative to the outer inclined surface of the fixed wedge, the movable wedge cooperating with a segment plate (200), an inner straight surface of the movable wedge being provided with an opening slot (321) for fitting with a crosshead (500), and the movable wedge and the fixed wedge being capable of converting an axial acting force into a longitudinal acting force; and a first pressure part (330) and a second pressure part (340) that are respectively arranged at both ends of the segment plate, the first pressure part comprising a spring A (331) and a retainer sleeve (332) for applying a force to the spring A, the second pressure part comprising a spring B (341), an extension shaft (610) applying a force to the spring B, the elastic force of the spring A being less than that of the spring B, and the spring A and the spring B separately providing pressure for downward movement of the segment plate during diameter reduction. The provision of elastic compensation can prevent strip deviation and greatly improve the strip coil forming efficiency.

Description

A cold rolling winding drum of wedge type and a winding machine with the winding drum TECHNICAL FIELD

[0001] The present application belongs to the technical field of winding equipment, and more particularly relates to a cold rolling winding drum of wedge type and a winding machine with the winding drum. BACKGROUND

[0002] The cold rolling winding machine is a key equipment on the cold rolling strip production line, which winds the cold rolled steel strip into a cylindrical shape for storage and transportation. The winding drum, as a key component of the winding machine, directly affects the service life of the winding machine and the winding quality of the strip.

[0003] Since the cold rolling winding drum is used for more than 18 months at a time, the easily damaged parts need to be replaced regularly and the internal carbon and oil stains need to be cleaned. The current wedge type cold rolling winding drum is very difficult to disassemble, and it is very difficult to replace the springs and other easily damaged parts, which requires special tools and professional personnel to operate.

[0004] In order to solve the above problems, through retrieval, Chinese patent CN211444556U discloses a two-end spring pressing winding drum with an integrated shaft structure, which comprises a core shaft, the core shaft comprises a transmission connection section connected with a hydraulic cylinder, an expansion and contraction section, and a support tail section connected with a support sleeve; a through hole for installing a pull rod is arranged in the core shaft, and a cross head is arranged at the end of the pull rod; the four forks of the cross head are inserted into the insertion grooves arranged at the bottom of the axial wedge through the mounting holes arranged at the end of the straight groove; a fan-shaped plate is arranged above the axial wedge, and four fan-shaped plates are combined into a cylindrical shape; connecting lugs are arranged at both ends of the fan-shaped plate, and disc spring grooves for accommodating support spring groups are arranged in the connecting lugs; a front end sleeve or a thrust ring for limiting the movement of the fan-shaped plate is arranged above the spring groove. However, through the analysis of the structure of the above-mentioned patent, when the fan-shaped plate is shrunk, the fan-shaped plate cannot form a complete circle, that is, there is a large gap, which causes indentation when winding thin strips. SUMMARY

[0005] 1. Problem to be solved

[0006] In view of the technical problems existing in the prior art, the present application provides a cold rolling winding drum of wedge type, which makes the moving wedge top surface and the outer surface of the fan-shaped plate form a complete circle, reduces indentation when winding thin strips, and ensures that the quality of the thin strips meets the requirements.

[0007] Another object of the present application is to provide a winding machine with the above-mentioned cold rolling winding drum.

[0008] 2. Technical solution

[0009] In order to solve the above problems, the technical solution adopted by the present application is as follows:

[0010] The first aspect of the present application provides a wedge type cold rolling reel, comprising a hollow spindle, a sector plate, a wedge expansion and contraction assembly, a connecting assembly, a cross head and a support assembly, the support assembly comprises an extension shaft which is used as a support point during work, the wedge expansion and contraction assembly comprises a fixed wedge fixed on the hollow spindle, a movable wedge matched with the outer inclined surface of the fixed wedge and capable of moving oppositely, the movable wedge is matched with the sector plate, the inner straight surface of the movable wedge is provided with an open slot for matching the cross head, and the movable wedge and the fixed wedge can convert the axial force into the longitudinal force; since the movable wedge and the fixed wedge are both provided with inclined surfaces, and the upper part of the movable wedge is in contact with the sector plate assembly, the axial movement of the movable wedge will also cause the up and down movement of the movable wedge, thereby driving the sector plate to move up and down, and the expansion and contraction of the reel is realized.

[0011] and a first pressure component and a second pressure component respectively arranged at both ends of the sector plate, the first pressure component comprises a spring A and a blocking sleeve for applying force to the spring A, the second pressure component comprises a spring B, and the spring B is applied force by the extension shaft, and the spring A and the spring B respectively provide pressure for the downward movement of the sector plate when the diameter is reduced. The spring force of the spring A is smaller than the spring force of the spring B, for example, when the spring force of the spring A and the spring force of the spring B are designed to be the same,

spring A

spring B

spring A

spring B

[0012] The wedge expansion and contraction assembly of the present application is in plane contact with the sector plate, and when the reel is reduced, if there is no external force, the contraction of the sector plate cannot be realized, by arranging the first pressure component and the second pressure component, the connection between the sector plate and the hollow spindle is ensured, and the expansion and contraction of the reel is smoothly realized.

[0013] According to any embodiment of the first aspect of the present application, the blocking sleeve is fixedly installed on the hollow spindle, a first through hole for penetrating the spring A is arranged on the blocking sleeve, and a first gland for providing a force applying surface for the spring A is matched with the first through hole, wherein the first gland is fixed in at least one of the following ways:

[0014] 1) The first gland is in a circular shape, an internal thread is arranged on the inner wall of the first through hole, an external thread is arranged on the lower end surface of the first gland and is engaged with the internal thread, so as to compress the spring A;

[0015] 2) The first gland is in a circular shape, a through hole is arranged around the circular gland for arranging a screw, and during normal use, since the first gland is far away from the support point, and a large vibration will be generated during winding, which is easy to cause the loosening of the threads of the first gland. The screw can effectively reduce the loosening of the first gland.

[0016] According to any embodiment of the first aspect of the present application, the extension shaft is mounted on the end face of the hollow spindle through a threaded hole, a second through hole for passing the spring B is formed on the extension shaft, and a second gland for providing a force applying surface for the spring B is matched with the second through hole; wherein the first gland is fixed in at least one of the following ways:

[0017] 1) the second gland is in a circular shape, an internal thread is arranged on the inner wall of the second through hole, and an external thread is arranged on the lower end face of the second gland to engage with the internal thread, so as to compress the spring B;

[0018] 2) the second gland is in a circular shape, and a through hole is arranged around the circular gland for arranging a screw.

[0019] According to any embodiment of the first aspect of the present application, the hollow spindle comprises an expansion section, a wedge mounting groove and a T-shaped groove are arranged on the outer surface of the expansion section in the radial direction, a relief notch is formed on the tail outer surface of the expansion section, and a mounting screw hole is formed on the end face. The inner straight surface of the fixed wedge is fixed in the wedge mounting groove of the hollow spindle, the outer inclined surface of the fixed wedge matches with the inner inclined surface of the movable wedge, and the outer straight surface of the movable wedge matches with the sector plate.

[0020] According to any embodiment of the first aspect of the present application, the sector plate comprises a plate body and a connecting lug on one side of the plate body, a first slot hole for mounting the spring A is arranged on the other side of the plate body opposite to the connecting lug, a second slot hole for mounting the spring B is arranged on the connecting lug and is located on the same straight line as the first slot hole, and a hook is arranged on the lower part of the plate body and matches with the T-shaped groove. The distance between one end of the hook and the end face of the sector plate is X, and the other end abuts against the connecting lug. The function of the hook is to prevent the sector plate from falling off when the winding drum is installed with the sector plate, thereby playing a protection role. The T-shaped groove arranged on the spindle and the hook arranged on the sector plate should ensure that the winding drum does not interfere with the expansion position, otherwise the expansion and contraction of the winding drum will be affected.

[0021] According to any embodiment of the first aspect of the present application, copper plates A are arranged on both sides of the hook, the thickness of the copper plates A is 0.5-2 mm, and positioning blocks are arranged at both ends of the fixed wedge and fixed on the hollow spindle. Since the fixed wedge and the positioning blocks are mounted on the bottom of the hollow spindle and do not move, the winding drum is often disassembled and maintained on site, and the fixed wedge and the positioning blocks do not need to be disassembled and can be directly cleaned, thereby greatly saving the disassembly and assembly time.

[0022] According to any embodiment of the first aspect of the present application, the connecting assembly comprises a pull rod, an oil cup, an oil pipe, a locking nut and a positioning key, a cross head is arranged at the end of the pull rod, the end of the pull rod is arranged with threads, and an oil hole is arranged inside, the oil pipe is screwed on the end of the pull rod, the oil cup is arranged at the end of the oil pipe, the pull rod is arranged with a radial oil hole at the cross head mounting position, and dry oil can be injected into the cross head mounting position of the pull rod through the oil cup; the pull rod is connected with the cross head through the positioning key and the locking nut.

[0023] According to any embodiment of the first aspect of the present application, eight copper plates B are arranged on both sides of the four protruding positions of the cross head, the thickness of the copper plate B is 0.5-2mm; an oil channel hole is arranged inside the cross head, and dry oil can be used to lubricate the friction surface of the eight copper plates B.

[0024] According to any embodiment of the first aspect of the present application, the supporting assembly further comprises a bearing, a supporting sleeve, an end cover and a pressing plate, which are sequentially arranged at the end of the extension shaft.

[0025] The second aspect of the present application provides a winding machine comprising the wedge type cold rolling winding drum of the first aspect.

[0026] The working principle of the present application is that when the expansion and contraction oil cylinder drives the pull rod to move to the left, the pull rod drives the moving wedge to move to the left through the cross head, the moving wedge pushes the fan-shaped plate to expand, and the winding drum is expanded; when the expansion and contraction oil cylinder drives the pull rod to move to the right, the pull rod drives the wedge to move to the left through the cross head, the wedge assembly will shrink, and the fan-shaped plate will shrink inward under the action of spring A and spring B, thereby realizing the shrinking of the winding drum.

[0027] 3. Beneficial effects

[0028] Compared with the prior art, the beneficial effects of the present application are:

[0029] (1) The wedge type cold rolling winding drum of the present application, the moving wedge extends outward, fills the gap between the fan-shaped plates, and the top surface of the moving wedge and the outer surface of the fan-shaped plate form a complete circle, which avoids or reduces the indentation of the wound thin strip, and ensures that the quality of the thin strip meets the requirements;

[0030] (2) The wedge type cold rolling winding drum of the present application, the fixed wedge is arranged on the hollow main shaft and does not move, so on-site maintenance does not need to be disassembled; the shrinking of the fan-shaped plate of the winding drum is controlled by the two end springs A and B, which is convenient for disassembly; in addition, the efficiency of the winding drum in the maintenance and repair link is improved, a large amount of winding drum disassembly time is saved, and the structure is simple and convenient to maintain. BRIEF DESCRIPTION OF DRAWINGS

[0031] The technical solutions of the present application will be described in further detail below in combination with the drawings and examples, but it should be understood that the drawings are designed only for explanatory purposes and thus do not limit the scope of the present application. In addition, unless otherwise specified, the drawings are only intended to conceptually illustrate the structural configurations described herein and are not necessarily drawn to scale.

[0032] Fig. 1 is a structural schematic diagram of the wedge-type cold rolling mandrel of the present application;

[0033] Fig. 2 is a sectional view I of the reduced diameter (small circle) of the wedge-type cold rolling mandrel of the present application;

[0034] Fig. 3 is a sectional view II of the reduced diameter (small circle) of the wedge-type cold rolling mandrel of the present application;

[0035] Fig. 4 is a sectional view I of the expanded diameter (large circle) of the wedge-type cold rolling mandrel of the present application;

[0036] Fig. 5 is a sectional view II of the expanded diameter (large circle) of the wedge-type cold rolling mandrel of the present application;

[0037] Fig. 6 is a structural schematic diagram of the hollow spindle of the wedge-type cold rolling mandrel of the present application;

[0038] Fig. 7 is a structural schematic diagram I of the retainer sleeve of the wedge-type cold rolling mandrel of the present application;

[0039] Fig. 8 is a structural schematic diagram II of the retainer sleeve of the wedge-type cold rolling mandrel of the present application;

[0040] Fig. 9 is a structural schematic diagram I of the support assembly of the wedge-type cold rolling mandrel of the present application;

[0041] Fig. 10 is a structural schematic diagram II of the support assembly of the wedge-type cold rolling mandrel of the present application;

[0042] Fig. 11 is a structural schematic diagram I of the sector plate assembly of the wedge-type cold rolling mandrel of the present application;

[0043] Fig. 12 is a structural schematic diagram II of the sector plate assembly of the wedge-type cold rolling mandrel of the present application;

[0044] Fig. 13 is a structural schematic diagram of the moving wedge and the fixed wedge of the wedge-type cold rolling mandrel of the present application;

[0045] Fig. 14 is a structural schematic diagram of the connecting assembly of the wedge-type cold rolling mandrel of the present application;

[0046] Fig. 15 is a structural schematic diagram I of the cross head of the wedge-type cold rolling mandrel of the present application;

[0047] Fig. 16 is a structural schematic diagram II of the cross head of the wedge-type cold rolling mandrel of the present application;

[0048] Fig. 17 is a structural schematic diagram of the spring A and the spring B of the wedge-type cold rolling mandrel of the present application;

[0049] Fig. 18 is a schematic diagram of the extension shaft of the inventive cold rolling cam and the hydraulic hose;

[0050] Reference signs: 100, hollow spindle; 110, expansion section; 111, cam mounting groove; 112, T-shaped groove; 113, avoiding notch; 114, mounting screw hole; 200, sector plate; 210, plate body; 211, first slot hole; 212, hook head; 213, copper plate A; 220, connecting lug; 221, second slot hole; 300, cam expansion assembly; 310, fixed cam; 320, moving cam; 321, open slot; 330, first pressure component; 331, spring A; 332, retaining sleeve; 333, first through hole; 334, first gland; 340, second pressure component; 341, spring B; 350, positioning block; 400, connecting assembly; 410, pull rod; 411, radial oil hole; 420, oil cup; 430, oil pipe; 440, locking nut; 450, positioning key; 500, cross head; 510, copper plate B; 520, oil passage hole; 600, support assembly; 610, extension shaft; 611, second through hole; 612, second gland; 613, groove; 614, hydraulic hose; 620, bearing; 630, support sleeve; 640, end cover; 650, pressing plate. DETAILED DESCRIPTION

[0051] The following detailed description of the exemplary embodiments of the present application refers to the accompanying drawings that show, by way of example, exemplary embodiments of the present application. While these exemplary embodiments are described in sufficient detail to enable those skilled in the art to practice the present application, it should be understood that other embodiments can be realized and that certain changes can be made to the embodiments without departing from the spirit and scope of the present application. The following detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but is merely intended to describe exemplary embodiments of the present application for purposes of illustration and explanation.

[0052] The following detailed description of the present application and exemplary embodiments can be better understood with reference to the drawings, wherein the elements and features of the present application are designated by reference numerals.

[0053] In combination with Figs. 1-18, the cold rolling cam of the present embodiment includes a hollow spindle 100, a sector plate 200, a cam expansion assembly 300, a connecting assembly 400, a cross head 500, and a support assembly 600.

[0054] As shown in FIG. 2, FIG. 3, FIG. 4, FIG. 5 and FIG. 13, the wedge expansion and contraction assembly 300 comprises a fixed wedge 310, a moving wedge 320, and a first pressure component 330 and a second pressure component 340 arranged at two ends of the sector plate 200 respectively. The fixed wedge 310 is fixed on the hollow spindle 100; the moving wedge 320 is matched with the outer inclined surface of the fixed wedge 310 and moves oppositely, the moving wedge 320 is matched with the sector plate 200, the inner straight surface of the moving wedge 320 is provided with an opening groove 321 for matching the cross head 500, and the moving wedge 320 and the fixed wedge 310 can convert the axial force into the longitudinal force.

[0055] Since the moving wedge 320 and the fixed wedge 310 are both arranged with inclined surfaces, and the upper part of the moving wedge 320 is in contact with the sector plate 200 assembly, the axial movement of the moving wedge 320 will also move up and down, thereby driving the sector plate 200 to move up and down, and realizing the expansion and contraction of the winding drum.

[0056] In the embodiment, as shown in FIG. 3 and FIG. 5, the first pressure component 330 comprises a spring A 331 and a blocking sleeve 332 for applying force to the spring A 331, and the second pressure component 340 comprises a spring B 341, and the spring B 341 is applied force by the extension shaft 610, and the spring A 331 and the spring B 341 respectively provide pressure for the downward movement of the sector plate 200 when the diameter is reduced.

[0057] The working principle of the present application is that when the expansion and contraction oil cylinder drives the pull rod 410 to move to the left, the pull rod 410 drives the moving wedge 320 to move to the left through the cross head 500, the moving wedge 320 pushes the sector plate 200 to expand, and the winding drum is expanded; when the expansion and contraction oil cylinder drives the pull rod 410 to move to the right, the pull rod 410 drives the wedge to move to the left through the cross head 500, the wedge assembly is contracted, and the sector plate 200 is contracted inward under the action of the spring A 331 and the spring B 341, thereby realizing the reduction of the winding drum. The wedge expansion and contraction assembly 300 and the sector plate 200 of the present application are in plane contact, when the winding drum is reduced, if there is no external force, the contraction of the sector plate 200 cannot be realized, by arranging the first pressure component 330 and the second pressure component 340, the connection between the sector plate 200 and the hollow spindle 100 is ensured, and the expansion and contraction of the winding drum is realized smoothly.

[0058] According to the field use, when the sector plate 200 near the support assembly 600 end is reduced in diameter, it cannot form a whole circle, that is, there is a large gap, which causes the winding thin strip to produce indentation, therefore, as shown in FIG. 17, the inventor obtains through a large number of experiments that the spring force of the spring A 331 is smaller than the spring force of the spring B 341,

spring A

spring B

spring A

spring B

[0059] For the above elastic compensation (mainly through H thickness compensation), the H thickness can be increased by using a gasket attached to the inner side of the second gland 612, and the spring B is elastically compensated through the gasket.

[0060] In addition, as shown in FIG. 18, the purpose of the elastic compensation is to increase the elastic force of the spring B, and based on this, the inventor of the application adjusts the structure, sets a groove 613 on the outer ring of the extension shaft 610, sets a notch on the inner side of the second gland 612 matched with the groove 613, sets a hydraulic hose 614 in the groove 613, the pipe diameter of the hydraulic hose 614 is 3mm at most, and meets the provisions of DIN EN 853, SAE J517, GB / T 3683-2011, ISO1436 and other standards, the hydraulic hose 614 is connected and communicated with the hydraulic system of the winding drum, and when the winding drum is retracted, the hydraulic hose 614 is provided with hydraulic oil, so that the hydraulic hose 614 is inflated, thereby providing H thickness compensation for the spring B.

[0061] Through use comparison, it is found that the elastic compensation structure of the application can not only effectively prevent the deviation of the strip steel, but also greatly improve the forming efficiency of the strip coil; the moving wedge 320 extends outward to fill the gap between the sector plates, the top surface of the moving wedge 320 and the outer surface of the sector plate form a whole circle, and the winding of the thin strip will not produce indentation, which ensures that the quality of the thin strip meets the requirements; the winding stability is high, the service life of the coiler is long, the noise is small, and the impact resistance is improved.

[0062] As shown in FIGS. 7 and 8, the retainer sleeve 332 is fixedly installed on the hollow main shaft 100, a first through hole 333 for penetrating the spring A 331 is arranged on the retainer sleeve 332, and a first gland 334 for providing a force surface for the spring A 331 is matched with the first through hole 333, wherein the first gland 334 is fixed in at least one of the following ways:

[0063] 1) The first gland 334 is in a circular shape, an inner thread is arranged on the inner wall of the first through hole 333, and an outer thread is arranged on the lower end surface of the first gland 334 and engaged with the inner thread, so as to compress the spring A 331;

[0064] 2) The first gland 334 is in a circular shape, through holes are arranged around the circular gland for arranging screws, and during normal use, since the first gland 334 is far away from the support point and generates large vibration during winding, the threads of the first gland 334 are prone to loosening, and the screwing mode can effectively reduce the loosening of the first gland 334.

[0065] As shown in FIG. 9 and FIG. 10, the support assembly 600 includes an extension shaft 610, a bearing 620, a support sleeve 630, an end cover 640 and a pressing plate 650, the bearing 620, the support sleeve 630, the end cover 640 and the pressing plate 650 are sequentially installed on the end of the extension shaft 610. The support assembly 600 works as a support point, ensuring the stability of the reel during operation.

[0066] Further, the extension shaft 610 is installed on the end face of the hollow spindle 100 through a threaded hole, a second through hole 611 for passing the spring B341 is formed on the extension shaft 610, and a second gland 612 for providing a force surface for the spring B341 is matched with the second through hole 611; wherein the first gland 334 is fixed in at least one of the following ways:

[0067] 1) The second gland 612 is circular in shape, an internal thread is arranged on the inner wall of the second through hole 611, and an external thread is arranged on the lower end face of the second gland 612 to engage with the internal thread, thereby compressing the spring B341;

[0068] 2) The second gland 612 is circular in shape, and a through hole is arranged around the circular gland for arranging a screw.

[0069] In the present embodiment, as shown in FIG. 6, the hollow spindle 100 includes an expansion section 110, a bevel mounting groove 111 and a T-shaped groove 112 are arranged on the outer surface of the expansion section 110 in the radial direction; an avoidance slot 113 is formed on the tail outer surface of the expansion section 110, and a mounting threaded hole 114 is formed on the end face. The inner straight surface of the fixed bevel 310 is fixed in the bevel mounting groove 111 of the hollow spindle 100, the outer bevel surface thereof cooperates with the inner bevel surface of the moving bevel 320, and the outer straight surface of the moving bevel 320 cooperates with the sector plate 200.

[0070] As shown in FIG. 11 and FIG. 12, the sector plate 200 includes a plate body 210 and a connecting lug 220 on one side of the plate body 210, a first slot hole 211 for mounting a spring A331 is formed on the other side of the plate body 210 opposite the connecting lug 220, a second slot hole 221 for mounting a spring B341 is formed on the connecting lug 220 and is located on the same straight line as the first slot hole 211, and a hook head 212 cooperating with the T-shaped groove 112 is arranged on the lower part of the plate body 210, one end of the hook head 212 is X away from the end face of the sector plate 200, and the other end abuts against the connecting lug 220.

[0071] The hook 212 is used to prevent the fan-shaped plate 200 from falling off when the fan-shaped plate 200 is installed on the roll, and to protect the fan-shaped plate 200. The T-shaped slot 112 of the main shaft and the hook 212 of the fan-shaped plate 200 ensure that the roll does not interfere with the expansion position, otherwise the expansion and contraction of the roll will be affected.

[0072] Further, as shown in FIG. 12, copper plates A213 are arranged on both sides of the hook 212, and the thickness of the copper plates A213 is 0.5-2mm; the fixed wedge 310 is provided with positioning blocks 350 at both ends, and the positioning blocks 350 are fixed on the hollow main shaft 100. Since the fixed wedge 310 and the positioning blocks 350 are installed at the bottom of the hollow main shaft 100 and do not move, the fixed wedge 310 and the positioning blocks 350 do not need to be disassembled and can be directly cleaned, which greatly saves the disassembly and assembly time.

[0073] Further, as shown in FIG. 14, the connecting assembly 400 includes a pull rod 410, an oil cup 420, an oil pipe 430, a locking nut 440 and a positioning key 450 which are arranged in the hole of the hollow main shaft 100, and a cross head 500 is arranged at the end of the pull rod 410; the end of the pull rod 410 is provided with threads, and an oil hole is arranged in the inside, the oil pipe 430 is screwed on the end of the pull rod 410, the oil cup 420 is arranged at the end of the oil pipe 430, the pull rod 410 is provided with a radial oil hole 411 at the position of the cross head 500, and dry oil can be injected into the position of the cross head 500 of the pull rod 410 through the oil cup 420; the pull rod 410 is connected with the cross head 500 through the positioning key 450 and the locking nut 440.

[0074] In addition, as shown in FIGS. 15 and 16, eight copper plates B510 are arranged on both sides of the protruding position of the cross head 500, and the thickness of the copper plates B510 is 0.5-2mm; the cross head 500 is provided with an oil channel hole 520 in the inside, and dry oil can lubricate the friction surface of the eight copper plates B510.

[0075] When the roll is stopped for maintenance in a short time, the oil cup 420 is manually filled with oil, the dry oil flows into the cross section of the eight copper plates through the oil hole in the pull rod 410, and the purpose of lubrication is achieved.

[0076] The above-mentioned wedge type cold rolling roll is applied to a coiler, and in the strip continuous rolling production, the above-mentioned wedge type cold rolling roll coiler provides constant front tension and smooth coiling speed for the unit, and guarantees the production technical requirements of good coiling shape of the strip coil.

[0077] The above describes the present application and its embodiments in a schematic manner, and the description is not restrictive, and the embodiments shown in the drawings are only one of the embodiments of the present application, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by the above, without departing from the spirit of the present application, similar structural modes and embodiments can be designed without creativity, and all of them shall belong to the protection scope of the present application.

Claims

1. A cold rolling cam, comprising a hollow spindle (100), a sector plate (200), a wedge expansion assembly (300), a connecting assembly (400), a cross head (500) and a supporting assembly (600), the supporting assembly (600) comprising an extension shaft (610), the wedge expansion assembly (300) comprising: A fixed wedge (310) fixed on the hollow spindle (100); a moving wedge (320) matched with the outer inclined surface of the fixed wedge (310) and moving oppositely, the moving wedge (320) is matched with the sector plate (200), the inner straight surface of the moving wedge (320) is provided with an open slot (321) for matching the cross head (500), the moving wedge (320) and the fixed wedge (310) can convert the axial force into the longitudinal force; characterized in that, Further comprising a first pressure component (330) and a second pressure component (340) respectively arranged at the two ends of the sector plate (200), the first pressure component (330) comprises a spring A (331) and a retainer sleeve (332) for applying force to the spring A (331), the second pressure component (340) comprises a spring B (341), the spring B (341) is applied force by an extension shaft (610), the elastic force of the spring A (331) is less than the elastic force of the spring B (341), the spring A (331) and the spring B (341) respectively provide pressure for the downward movement of the sector plate (200) when the diameter is reduced.

2. The wedge cold rolling mandrel of claim 1 wherein, The retainer sleeve (332) is fixedly installed on the hollow spindle (100), the retainer sleeve (332) is provided with a first through hole (333) for penetrating the spring A (331), the first through hole (333) is matched with a first gland (334) for providing a force surface for the spring A (331).

3. A cold rolling crown as claimed in claim 1 or 2, characterized in that The extension shaft (610) is installed on the end face of the hollow spindle (100) through a threaded hole, the extension shaft (610) is provided with a second through hole (611) for penetrating the spring B (341), the second through hole (611) is matched with a second gland (612) for providing a force surface for the spring B (341).

4. The wedge cold rolling mandrel of claim 1 wherein, The hollow spindle (100) comprises an expansion and contraction section (110), the expansion and contraction section (110) is provided with a wedge installation groove (111) and a T-shaped groove (112) in the radial direction, an avoidance slot (113) is provided on the tail outer surface of the expansion and contraction section (110), and a mounting threaded hole (114) is provided on the end face.

5. The wedge cold rolling mandrel of claim 4 wherein, The sector plate (200) comprises a plate body (210) and a connecting lug (220) on one side of the plate body (210), a first slot hole (211) for mounting the spring A (331) is provided on the other side of the plate body (210) opposite the connecting lug (220), a second slot hole (221) for mounting the spring B (341) is provided on the connecting lug (220), and the first slot hole (211) and the second slot hole (221) are located on the same straight line, and a hook (212) matched with the T-shaped groove (112) is provided on the lower part of the plate body (210).

6. The wedge cold rolling mandrel of claim 5 wherein, Copper plates A (213) are arranged on both sides of the hook (212), and positioning blocks (350) are provided at the two ends of the fixed wedge (310), the positioning blocks (350) are fixed on the hollow spindle (100).

7. The wedge cold rolling mandrel of claim 6 wherein, The connecting assembly (400) comprises a pull rod (410) arranged in the inner hole of the hollow spindle (100), an oil cup (420), an oil pipe (430), a locking nut (440) and a positioning key (450), a cross head (500) is installed at the end of the pull rod (410); the oil pipe (430) is installed at the end of the pull rod (410) by screw thread, the oil cup (420) is installed at the end of the oil pipe (430), and the pull rod (410) is arranged with a radial oil hole (411) at the cross head (500) installation position; the pull rod (410) is connected with the cross head (500) through the positioning key (450), the locking nut (440).

8. The wedge cold rolling mandrel of claim 7 wherein, The copper plate B (510) is arranged on both sides of the four protruding positions of the cross head (500); the cross head (500) is internally provided with an oil channel hole (520).

9. The wedge cold rolling mandrel of claim 8 wherein, The supporting assembly (600) further comprises a bearing (620), a supporting sleeve (630), an end cover (640) and a pressing plate (650), which are sequentially installed at the end of the extension shaft (610).

10. A coiler characterized by comprising: The oblique wedge type cold rolling reel comprises the oblique wedge type cold rolling reel according to any one of claims 1-9.

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