Guide tip suitable for bearing high-speed rolling

Abstract

The invention relates to the technical field of rolling mill guide and guard tips, in particular to a guide and guard tip suitable for bearing high-speed rolling, which comprises a guide and guard base plate and guide and guard rollers arranged on two sides of the guide and guard base plate, and the roller surface of each guide and guard roller is a concave arc-shaped curved surface matched with the shape of a wire bar. The guide body with the section of an asymmetric trapezoidal structure firstly makes contact with the guide roller, the inclined face of the guide body serves as a guide face, a rolled piece possibly slightly jumping is smoothly guided to the guide channel, the guide roller is driven by the driving part to rotate, the guide roller is matched with a water-based solution cooling medium sprayed by the nozzle, friction resistance and friction work are greatly reduced, and the service life of the guide roller is prolonged. The guide and guard point is integrally positioned in a reasonable working temperature range, and when products with different specifications are mounted or produced, an operator can easily move the whole cooling and lubricating seat through the adjusting part, so that the relative position of the guide and guard body and a rolling center line is finely adjusted, and the optimal centering property and rolling stability are ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mill guide tips, and particularly relates to a guide tip suitable for bearing high-speed rolling. BACKGROUND

[0002] In the high-speed rolling production of metal wire rods, the guide device is a crucial auxiliary equipment, which functions to correctly guide the wire rod rolling piece to enter or leave the rolling mill, and ensures that the rolling piece stably runs in the intended direction and state. The guide tip, as a key component of the guide device, directly contacts the high-temperature and high-speed rolling piece, and its performance directly affects the stability of rolling, the surface quality of the product, and the service life of the equipment. In order to facilitate the replacement of the guide tip when processing different sizes of materials, a material guide plate adjusting mechanism is arranged on the outside of the fixed plate.

[0003] For example, a rolling mill rolling guide device is disclosed in Chinese Patent No. CN202211647482.0, which comprises a fixed plate, a roller mounting mechanism is arranged on the top of the fixed plate, a rotating distance adjusting mechanism is arranged on the bottom of the fixed plate, and a material guide plate adjusting mechanism is arranged on the outside of the fixed plate. The roller mounting mechanism comprises a pressing assembly and a mounting assembly, the mounting assembly is arranged on the top of the pressing assembly, the clamping block is inserted into the clamping groove of the connecting column through the elastic force of the return spring, so that the rotating sleeve is limited to rotate on the connecting column, and the effect of facilitating the replacement of the rubber ring is achieved. However, it still adopts the traditional symmetrical structure. In the wire rod workshop of a steel enterprise, due to different rolling specifications, the bearing capacity of the same guide tip is different during the rolling process. When large-scale or high-speed rolling is performed, once the rolling piece slightly jumps, it will randomly cause impact and wear on both sides of the guide tip. A larger load is easy to cause the guide tip to break, thereby greatly increasing the risk of steel piling. SUMMARY

[0004] Therefore, the present application aims to provide a guide tip suitable for bearing high-speed rolling, so as to solve the technical problem that the existing technology adopts the traditional symmetrical structure, in the wire rod workshop of a steel enterprise, due to different rolling specifications, the bearing capacity of the same guide tip is different during the rolling process. When large-scale or high-speed rolling is performed, once the rolling piece slightly jumps, it will randomly cause impact and wear on both sides of the guide tip. A larger load is easy to cause the guide tip to break, thereby greatly increasing the risk of steel piling.

[0005] In order to achieve the above purpose, the present application provides a guide tip suitable for bearing high-speed rolling, which comprises a guide base plate and guide rollers arranged on both sides of the guide base plate. The roller surface of the guide roller is a concave arc curved surface matched with the shape of the wire rod. A guide channel for the wire rod to pass through is arranged between the two guide rollers. A guide body is arranged on the guide base plate. The cross section of the guide body is a non-symmetrical trapezoidal structure. The guide tip further comprises:

[0006] A cooling and lubricating seat is arranged on the guide base plate, and the guide body is integrated on the cooling and lubricating seat;

[0007] A plurality of nozzles are arranged on the cooling and lubricating seat, and the nozzles are all directed towards the guide channel and the root of the guide body;

[0008] A driving part is arranged for driving the guide roller to rotate;

[0009] An adjusting part is arranged for adjusting the bidirectional movement of the cooling and lubricating seat.

[0010] Further, one side of the guide body facing the rolled piece is a guide slope, and the other side is a support surface.

[0011] Further, a serpentine cooling flow channel is arranged in the cooling and lubricating seat, and an exhaust opening is arranged in the middle of the adjacent two guide bodies in the rolling direction of the wire rod.

[0012] Further, the driving part comprises:

[0013] A servo motor and a speed reducer are arranged at the lower part of the guide base plate, the servo motor is connected with the roller shaft of the guide roller through the speed reducer, and can drive the guide roller to rotate at a speed synchronized with the linear speed of the rolled piece.

[0014] Further, the adjusting part comprises:

[0015] A guide rail is arranged on the guide base plate, and the cooling and lubricating seat is arranged on the guide rail through a locking piece;

[0016] A screw rod one is transversely screwed on the guide base plate, and the end of the screw rod one is rotatably connected to the side end of the cooling and lubricating seat;

[0017] A screw rod two is longitudinally screwed on the guide base plate, and the end of the screw rod two is rotatably connected to the side end of the cooling and lubricating seat.

[0018] Further, the inclination angle of the guide slope is 15° to 45°, and the surfaces of the guide slope and the support surface are both coated with a wear-resistant hard alloy layer.

[0019] Further, the nozzles comprise two groups arranged symmetrically, each group comprising a fan-shaped spray cooling nozzle and a conical atomizing lubricating nozzle.

[0020] Further, the fan-shaped spray cooling nozzle and the conical atomizing lubricating nozzle are respectively connected to independent cooling liquid and lubricant supply systems.

[0021] Furthermore, the guide roller is provided with a protective cover, which has a hollow structure and an open area in the middle, and the guide channel is placed in the open area.

[0022] Furthermore, a pad is provided on the guide base plate, and a guide plate is detachably provided on the pad, the guide plate corresponding to the cooling and lubrication seat.

[0023] The beneficial effects of this invention are as follows: When the head of the high-temperature rolled piece arrives, the guide body, which has an asymmetrical trapezoidal cross-section, first contacts it. Its inclined surface serves as a guiding surface, smoothly guiding the rolled piece, which may be slightly bouncing, into the guide channel. The guide roller is driven to rotate by the drive unit. Combined with the water-based solution cooling medium sprayed from the nozzle, the frictional resistance and frictional work are greatly reduced, and the guide tip is kept within a reasonable working temperature range. When installing or producing products of different specifications, the operator can easily move the entire cooling and lubrication seat through the adjustment unit to fine-tune the relative position of the guide body and the rolling centerline, ensuring optimal alignment and rolling stability. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the drive unit in the present invention;

[0027] Figure 3 This is a schematic diagram of the assembly of the cooling and lubrication seat and the adjustment part in this invention;

[0028] Figure 4 This is an assembly diagram of some structures in this invention.

[0029] The diagram is marked as follows:

[0030] 1. Guide base plate; 2. Guide roller; 3. Guide body; 4. Cooling and lubrication seat; 5. Nozzle; 6. Exhaust opening; 7. Servo motor; 8. Reducer; 9. Guide rail; 10. Lead screw one; 11. Lead screw two; 12. Protective cover; 13. Pad; 14. Guide plate. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0032] It should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0033] In a first aspect, the present invention provides a guide tip suitable for bearing high-speed rolling, such as Figures 1-4 As shown, the device includes a guide base plate 1 and guide rollers 2 disposed on both sides of the guide base plate 1. The roller surface of the guide rollers 2 is a concave arc-shaped curved surface adapted to the shape of the wire rod. A guide channel for the wire rod to pass through is formed between the two guide rollers 2. A guide body 3 is provided on the guide base plate 1. The cross-section of the guide body 3 is an asymmetrical trapezoidal structure. The guide tip also includes:

[0034] A cooling and lubrication seat 4 is provided on the guide plate 1, and the guide body 3 is integrated on the cooling and lubrication seat 4;

[0035] The nozzles 5 are provided on the cooling and lubrication seat 4. There are several nozzles 5, and all of them face the guide channel and the root of the guide body 3.

[0036] Drive unit for driving the guide roller 2 to rotate;

[0037] An adjustment section for adjusting the bidirectional movement of the cooling and lubrication seat 4.

[0038] In this embodiment, when the head of the high-temperature rolled piece arrives, the guide body 3, which has an asymmetrical trapezoidal cross-section, first contacts it. Its inclined surface serves as a guiding surface, smoothly guiding the rolled piece, which may be slightly bouncing, into the guide channel. After entering the guide channel, the rolled piece is completely embraced by two actively rotating guide rollers 2. At this time, the drive unit controls the guide rollers 2 to keep their circumferential linear velocity synchronized with the forward linear velocity of the rolled piece. This makes the contact between the rolled piece and the guide rollers 2 theoretically become pure rolling friction, which greatly reduces frictional resistance and frictional work.

[0039] At the same time, nozzle 5 starts working, spraying water-based cooling medium. The water-based cooling medium delivered to the guide channel provides immediate cooling and lubrication to the surface of the high-speed passing workpiece, reducing thermal and mechanical wear between it and the guide roll 2, and improving the surface quality of the workpiece. Meanwhile, the water-based cooling medium delivered to the root of the guide body 3 provides precise forced cooling to the area that is most affected by the impact of the workpiece and the most severe heat accumulation, preventing it from softening, deforming or burning due to overheating, and ensuring that the guide tip is within a reasonable working temperature range.

[0040] When installing or producing products of different specifications, operators can easily move the entire cooling and lubrication seat 4 through the adjustment section, thereby fine-tuning the relative position of the guide body 3 and the rolling center line to ensure optimal alignment and rolling stability.

[0041] In this embodiment, as Figure 1 , Figure 3 As shown, the guide body 3 has a guide slope on one side facing the workpiece and a support surface on the other side. The guide slope can smoothly "guide" the workpiece that may jump into the guide channel, effectively preventing impact and steel jamming accidents, and improving the smoothness and stability of entry. The support surface provides reliable back support for the workpiece, preventing it from swinging or twisting during high-speed movement, and ensuring the straightness of rolling.

[0042] In this embodiment, the cooling lubrication seat 4 is provided with a serpentine cooling channel, which greatly increases the heat exchange area and residence time between the cooling medium and the seat body, and realizes the "from the inside out" powerful cooling of the cooling lubrication seat 4 and the guide body 3 integrated thereon, effectively suppressing its thermal deformation and thermal fatigue. The middle of two adjacent guide bodies 3 in the bar rolling direction is provided with an exhaust opening 6, which forms a natural waste discharge channel. By utilizing the airflow driven by the high-speed advance of the rolled piece and the subsequent possible negative pressure suction, steam, oil mist and iron oxide dust can be discharged in time, keeping the inside of the guide channel clean and improving the working conditions.

[0043] In this embodiment, as Figure 1 , Figure 2 As shown, the drive unit includes:

[0044] A servo motor 7 and a reducer 8 are located at the lower part of the guide roller base plate 1. The servo motor 7 is connected to the roller shaft of the guide roller 2 through the reducer 8, and can drive the guide roller 2 to rotate at a speed synchronized with the linear speed of the rolled piece. This achieves pure rolling friction between the guide roller 2 and the rolled piece, minimizing frictional resistance. This not only significantly reduces energy consumption and wear, but also avoids surface damage to the rolled piece caused by sliding friction.

[0045] In this embodiment, as Figure 1 , Figure 3 As shown, the adjustment unit includes:

[0046] The guide rail 9 is provided on the guide base plate 1, and the cooling and lubrication seat 4 is provided on the guide rail 9 by a locking member;

[0047] A lead screw 10 is mounted on the guide base plate 1 with a transverse thread, and the end of the lead screw 10 is rotatably connected to the side end of the cooling and lubrication seat 4.

[0048] The lead screw 11 is mounted longitudinally on the guide plate 1. The end of the lead screw 11 is rotatably connected to the side end of the cooling and lubrication seat 4, which realizes the independent and precise adjustment of the guide tip in two degrees of freedom in the lateral and longitudinal directions. This ensures that the guide channel is perfectly aligned with the rolling center line. The guide rail 9 ensures the smoothness and straightness of the movement process without shaking. After the adjustment is in place, the locking part can be firmly locked to prevent displacement under vibration.

[0049] In this embodiment, as Figure 3 , Figure 4 As shown, the inclination angle of the guide slope is 15° to 45°. Both the guide slope and the support surface are coated with a wear-resistant hard alloy layer. This angle range can ensure good guiding performance without weakening the structural strength due to excessive flatness. The hard alloy layer has extremely high hardness HRA≥85 and wear resistance, which increases the service life of the guide body 3 by several times. It is particularly suitable for high-strength and high-speed rolling conditions.

[0050] In this embodiment, as Figure 3 As shown, the nozzle 5 includes two symmetrically arranged groups, each group including a fan-shaped spray cooling nozzle and a cone-shaped atomizing lubrication nozzle. Cooling and lubrication are separated, and the medium and spray parameters can be selected in a targeted manner to avoid mutual interference. For example, high-pressure water is used for strong cooling, and atomized oil is used for boundary lubrication. The symmetrical arrangement ensures that the workpiece can be uniformly cooled and lubricated in the circumferential direction without dead corners.

[0051] In this embodiment, the fan-shaped spray cooling nozzle and the cone-shaped atomizing lubrication nozzle are respectively connected to independent coolant and lubricant supply systems, which avoids water and oil mixing in the pipeline, ensures the purity and lubrication performance of the lubricating oil, and prevents the cooling water from being contaminated by oil and reducing the cooling efficiency.

[0052] In this embodiment, as Figure 1 As shown, the guide roller 2 is provided with a protective cover 12. The protective cover 12 has a hollow structure and an open area in the middle. The guide channel is placed in the open area, which effectively prevents foreign objects such as iron oxide scale and cooling water from splashing onto the high-speed rotating guide roller 2 and its transmission components, thereby improving the safety of equipment operation.

[0053] In this embodiment, as Figure 4As shown, a pad 13 is provided on the guide base plate 1, and a guide plate 14 is detachably provided on the pad 13. The guide plate corresponds to the cooling and lubrication seat 4. The guide plate 14 and the guide body 3 together form a longer guiding area, which further enhances the stability of the workpiece during high-speed rolling.

[0054] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention includes the claims being limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.

[0055] This invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A guide head suitable for carrying out high speed rolling, comprising a guide base plate (1) and guide rollers (2) arranged on both sides of the guide base plate (1), the roller surface of the guide rollers (2) is a concave arc-shaped surface matching the outer shape of the wire rod, and a guide channel for the wire rod to pass through is arranged between the two guide rollers (2), characterized in that, The guide base plate (1) is provided with a guide body (3), the cross section of the guide body (3) is a non-symmetrical trapezoidal structure, and the guide body further comprises: A cooling and lubricating seat (4) is arranged on the guide base plate (1), and the guide body (3) is integrated on the cooling and lubricating seat (4); A plurality of nozzles (5) are arranged on the cooling and lubricating seat (4), and the nozzles (5) are all directed to the guide channel and the root of the guide body (3); A driving part is arranged for driving the guide roller (2) to rotate; An adjusting part is arranged for adjusting the cooling and lubricating seat (4) to move in two directions.

2. A guide tip suitable for use in high speed rolling according to claim 1, characterized in that, One side of the guide body (3) facing the rolled piece is a guide slope, and the other side is a supporting surface.

3. A guide tip suitable for use in high speed rolling as claimed in claim 1, wherein, The cooling and lubricating seat (4) is provided with a serpentine cooling flow channel, and exhaust openings (6) are arranged at the middle portions of two adjacent guide bodies (3) in the rolling direction of the wire rod.

4. A guide tip suitable for use in high speed rolling as claimed in claim 1, wherein, The driving part comprises: A servo motor (7) and a speed reducer (8) are arranged at the lower portion of the guide base plate (1), the servo motor (7) is connected with the roller shaft of the guide roller (2) through the speed reducer (8), and can drive the guide roller (2) to rotate at a speed synchronized with the linear speed of the rolled piece.

5. A guide tip suitable for use in high speed rolling as claimed in claim 1, wherein, The adjusting part comprises: A guide rail (9) is arranged on the guide base plate (1), and the cooling and lubricating seat (4) is arranged on the guide rail (9) through a locking member; A first screw rod (10) is transversely screwed on the guide base plate (1), and the end portion of the first screw rod (10) is rotatably connected to the side end of the cooling and lubricating seat (4); A second screw rod (11) is longitudinally screwed on the guide base plate (1), and the end portion of the second screw rod (11) is rotatably connected to the side end of the cooling and lubricating seat (4).

6. A guide tip suitable for use in high speed rolling as claimed in claim 2, wherein, The inclination angle of the guide slope is 15° to 45°, and the surfaces of the guide slope and the supporting surface are both coated with a wear-resistant hard alloy layer.

7. A guide tip suitable for use in high speed rolling as claimed in claim 1, wherein, The nozzles (5) comprise two symmetrical groups, each group comprising a fan-shaped spray cooling nozzle and a conical atomizing lubricating nozzle.

8. A guide tip suitable for use in high speed rolling according to claim 7, characterized in that The fan-shaped spray cooling nozzle and the conical atomizing lubricating nozzle are respectively connected with independent cooling liquid and lubricant supply systems.

9. A guide tip suitable for use in high speed rolling as claimed in claim 1, wherein, The guide roller (2) is provided with a protective cover (12), the protective cover (12) is a hollow structure and has an open area at the middle portion, and the guide channel is arranged in the open area.

10. A guide tip suitable for use in high speed rolling as claimed in claim 1, wherein, A backing plate (13) is arranged on the guide base plate (1), a guide plate (14) is detachably arranged on the backing plate (13), and the guide plate corresponds to the cooling and lubricating seat (4).

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