A steel pipe annealing apparatus

Abstract

The utility model relates to metal material hot processing technical field, and disclose a kind of steel pipe annealing equipment, including annealing device ontology, blanking frame is fixedly installed in the discharging end of annealing device ontology, inclined plate is fixedly installed on the inner wall of blanking frame, mounting groove is opened on the outer wall of inclined plate, round roller is rotatably installed on the inner wall of mounting groove for guiding the central downslide of pipe material, the utility model is by including annealing device ontology, blanking frame is fixedly installed in the discharging end of annealing device ontology, inclined plate is fixedly installed on the inner wall of blanking frame, mounting groove is opened on the outer wall of inclined plate, round roller is rotatably installed on the inner wall of mounting groove for guiding the central downslide of pipe material.

Description

Technical Field

[0001] This utility model relates to the field of hot working technology of metal materials, and in particular to a steel pipe annealing equipment. Background Technology

[0002] Steel pipe annealing equipment is a key piece of equipment in the field of metal material hot working. It is mainly used to eliminate internal stress generated during the rolling or forming process of steel pipes through controlled heating, holding, and cooling processes. This process refines the grain structure and adjusts the hardness and toughness to meet the mechanical property requirements of subsequent processing (such as cold drawing and welding) or practical applications (such as oil and gas transportation and mechanical structural support). The equipment typically consists of a heating furnace, a holding chamber, a cooling system, a conveying mechanism, and a feeding device. The feeding device, as the final stage of the process, is responsible for guiding the annealed steel pipes from the conveyor line to a collection box or the next production line. The feeding device of existing steel pipe annealing equipment mostly adopts the inclined plate guide structure. The inclined plate is used to move the steel pipe along the inclined plate under the action of gravity by utilizing the inclination angle and surface smoothness of the inclined plate. After annealing, when the steel pipe slides down through the existing inclined plate, baffles are usually set on both sides of the inclined plate to guide the steel pipe to the center. However, this makes it very easy for the two ends of the steel pipe to collide or scratch with the baffles on both sides during the slide.

[0003] Therefore, a steel pipe annealing device was designed. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing a steel pipe annealing device that solves the problem that the inclined plate guiding structure used in the feeding device of existing steel pipe annealing devices is prone to collision between the fragile end faces of the steel pipe and the baffles when the steel pipe slides down due to the setting of baffles on both sides.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A steel pipe annealing device includes an annealing device body, a feeding frame fixedly installed at the discharge end of the annealing device body, an inclined plate fixedly installed on the inner wall of the feeding frame, an installation groove opened on the outer wall of the inclined plate, and a circular roller rotatably installed on the inner wall of the installation groove for guiding the pipe material to slide down in the center.

[0006] Preferably, the mounting grooves are symmetrically distributed in pairs with the longitudinal centerline of the inclined plate as the axis of symmetry, and the cross-section of each set of mounting grooves is rectangular.

[0007] Preferably, multiple circular rollers are rotatably installed in both sets of mounting slots, and the highest point of the outer ring of each of the multiple circular rollers is higher than the upper surface of the inclined plate.

[0008] Preferably, among the plurality of the circular rollers, the circular rollers located at both ends of the mounting groove are installed in a horizontal direction with the upper surface of the inclined plate, and the rest of the circular rollers are installed in an obliquely symmetrical manner, and the left and right groups of oblique circular rollers form a guide layout shaped like the Chinese character "eight".

[0009] Preferably, a deceleration plate is fixedly installed at the bottom of the inclined plate by bolts, and the deceleration plate is made of wear-resistant steel plate.

[0010] Preferably, a plurality of rubber strips are fixedly installed on the top of the deceleration plate by bonding, and the plurality of rubber strips are distributed at equal intervals along the length direction of the deceleration plate.

[0011] Preferably, the top of each of the rubber strips is bent toward the inclination direction of the inclined plate.

[0012] Preferably, a baffle is rotatably mounted inside the inclined plate near the bottom through a rotating shaft, the rotating shaft of the baffle extends to the outer side of the inclined plate, a knob capable of being rotationally fixed at a certain angle is fixedly mounted at the end of the rotating shaft located on the outer side of the inclined plate, and the knob is provided with an angle scale mark.

[0013] Preferably, a rubber plate is fixedly mounted at the bottom of the baffle by screws, the rubber plate is made of soft rubber with Shore Hardness-HA, and the front cross-section of the rubber plate is designed to be triangular.

[0014] Preferably, the baffle is located directly below the deceleration plate, the installation angles of the baffle and the deceleration plate form a symmetrical inverted splayed shape, and the minimum distance between the two is larger than the diameter of the steel pipe.

[0015] Compared with the prior art, the present utility model has the following beneficial effects: According to the present utility model, the mounting grooves are symmetrically distributed along the longitudinal center line of the inclined plate, and the highest point of the outer ring of the circular rollers in the grooves is higher than the upper surface of the inclined plate. The steel pipe is preliminarily slid by the horizontal circular rollers, and further constrained at the center line position of the inclined plate by the splayed oblique circular rollers. Even if there is a difference in the length of the steel pipes or uneven sliding speeds, the steel pipes can be prevented from shifting to both sides, and the guiding can be realized without relying on the traditional side baffles, which effectively solves the problem of collision and damage at both ends of the steel pipe in the existing device.

[0016] According to the present utility model, by providing the deceleration plate, the bent rubber strips distributed at equal intervals on the top thereof can absorb the sliding kinetic energy of the steel pipe through elastic deformation, and the bent design of the rubber strips can increase the contact area with the steel pipe, making the deceleration process more stable. The triangular cross-section soft rubber plate at the bottom of the baffle can perform secondary buffering on the residual speed of the steel pipe, avoid the impact of hard contact on the end face, and at the same time, the triangular structure can guide the steel pipe to fall into the collecting device along a fixed path.

[0017] This utility model allows for adjustable tilt angle via a graduated knob, enabling flexible adjustment of the distance between the steel pipe and the speed reducer based on the steel pipe diameter. This avoids jamming while ensuring a buffering effect, balancing the smoothness of the steel pipe's descent with the equipment's adaptability to various steel pipe specifications, thus improving the equipment's versatility. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the feeding structure of the conventional device of this utility model; Figure 3 This is a schematic diagram of the assembly structure of the feeding frame and the annealing device body of this utility model. Figure 4 This is a schematic diagram of the overall structure of the feeding frame of this utility model; Figure 5 This is a schematic diagram of the internal structure of the feeding frame of this utility model; Figure 6 This is a schematic diagram of a partial explosion structure of the present invention; Figure 7 This is a schematic diagram of the overall structure of the inclined plate of this utility model.

[0020] Drawing number descriptions: 1. Annealing device body; 2. Feeding frame; 3. Inclined plate; 31. Mounting groove; 311. Circular roller; 4. Speed ​​reduction plate; 41. Rubber strip; 5. Baffle; 51. Rubber plate; 52. Knob. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings.

[0022] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will be apparent to those skilled in the art. The basic principles of the present invention defined in the following description can be used in other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0023] It should be understood by those skilled in the art that in the disclosure of the present utility model, the terms "longitudinal", "transverse", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the simplified description of the present utility model, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, therefore, the above terms cannot be construed as limiting the present utility model.

[0024] It can be understood that the term "one" should be interpreted as "at least one" or "one or more", that is, in one embodiment, the number of one element can be one, while in another embodiment, the number of the element can be multiple, and the term "one" cannot be interpreted as a limitation on the quantity. Example

[0025] Please refer to Figure 1-7 , a steel pipe annealing apparatus, comprising an annealing device body 1, a blanking frame 2 fixedly mounted at the discharge end of the annealing device body 1, an inclined plate 3 fixedly mounted on the inner wall of the blanking frame 2, a mounting groove 31 opened on the outer wall of the inclined plate 3, and a round roller 311 rotatably mounted on the inner wall of the mounting groove 31 for guiding the pipe material to slide down centrally; the mounting grooves 31 are symmetrically distributed in pairs with the longitudinal center line of the inclined plate 3 as the axis of symmetry, and the cross section of each group of mounting grooves 31 is designed to be rectangular; a plurality of round rollers 311 are rotatably mounted in both groups of mounting grooves 31, and the highest point of the outer ring of the plurality of round rollers 311 is higher than the upper surface of the inclined plate 3; among the plurality of round rollers 311, the round rollers 311 located at both ends of the mounting groove 31 are installed in the horizontal direction with the upper surface of the inclined plate 3, the remaining round rollers 311 are installed in an obliquely symmetrical manner, and the left and right groups of oblique round rollers 311 form a guide layout in the shape of the Chinese character "eight"; a deceleration plate 4 is fixedly installed at the bottom of the inclined plate 3 by bolts, and the deceleration plate 4 is made of wear-resistant steel plate; a plurality of rubber strips 41 are fixedly installed on the top of the deceleration plate 4 by bonding, and the plurality of rubber strips 41 are distributed at equal intervals along the length direction of the deceleration plate 4; the top of each rubber strip 41 is bent toward the inclination direction of the inclined plate 3; a baffle plate 5 is rotatably installed inside the inclined plate 3 near the bottom through a rotating shaft, the rotating shaft of the baffle plate 5 extends to the outside of the inclined plate 3, and the end of the rotating shaft located outside the inclined plate 3 is fixedly installed with a knob 52 capable of being rotated by a fixed angle, and the knob 52 is provided with an angle scale mark; a rubber plate 51 is fixedly installed at the bottom of the baffle plate 5 by screws, the rubber plate 51 is made of soft rubber with a Shore hardness of 50-70HA, and the front section of the rubber plate 51 is designed to be triangular; the baffle plate 5 is located directly below the deceleration plate 4, and the installation angles of the baffle plate 5 and the deceleration plate 4 form a symmetrical inverted splayed shape, and the minimum distance between the two is greater than the diameter of the steel pipe.

[0026] By setting symmetrical mounting grooves 31 and figure-eight shaped rollers 311, the annealed steel pipe can be guided in the center. The highest point of the outer ring of the rollers 311 in each set of mounting grooves 31 is higher than the upper surface of the inclined plate 3, so that the steel pipe only contacts the rollers 311 when it slides down and does not directly rub against the inclined plate 3, reducing the risk of surface scratches. The horizontal rollers 311 at both ends of the mounting grooves 31 first guide the steel pipe to slide initially. Then, the symmetrical figure-eight shaped inclined rollers 311 can constrain the steel pipe to the center line position of the inclined plate 3. Even if there are differences in the length of the steel pipe or uneven sliding speed, it can effectively prevent it from shifting to both sides of the inclined plate 3, and prevent dents and burrs caused by accidental collisions at both ends of the steel pipe. By using wear-resistant steel plate material for the speed reducer 4, and with bent rubber strips 41 evenly distributed along the length of the top of the speed reducer 4, when the steel pipe slides down and contacts the rubber strips 41, the bent surface can form a surface contact with the outer wall of the steel pipe, increasing the contact area and avoiding local overload of the rubber strips 41, which could lead to deformation and failure. This ensures a smooth transition to the area of ​​the baffle 5.

[0027] Because the steel pipe may have a downward sliding posture with one end higher than the other or a slight rotation due to the previous conveying deviation after annealing, the rubber plate 51 with a triangular cross section has a soft property with a Shore hardness of 50-70HA. When it comes into contact with the steel pipe, it can swing slightly with the direction of the contact force. No matter whether the steel pipe contacts the rubber plate 51 with its end face, side or inclined posture, the rubber plate 51 can adjust the angle of force by swinging. This avoids the impact and indentation of the steel pipe end face caused by hard contact, and can also offset the posture deviation of the steel pipe by swinging. This prevents the steel pipe from getting stuck in the gap between the rubber plate 51 and the deceleration plate 4 due to abnormal posture. The two inclined surfaces of the triangular cross section itself have a guiding function. The adjustable baffle 5 design allows the operator to adjust the tilt angle of the baffle 5 by using the knob 52 according to the actual diameter of the steel pipe to be processed. This ensures that the minimum distance between the baffle 5 and the speed reduction plate 4 is always slightly larger than the diameter of the steel pipe, thus avoiding jamming and ensuring a buffering effect, thereby improving the versatility of the equipment. The inclined plate 3 adopts a gentle slope design. This slope is designed to ensure that the steel pipe can slide down by its own weight after annealing, with the help of the rolling roller 311 in the mounting groove 31, without the need for additional external force. The gentle slope can reduce the initial speed of the steel pipe sliding down, effectively avoiding the steel pipe sliding down too fast due to the slope being too steep. It can also reserve sufficient adjustment time for the subsequent centering guidance of the "eight" shaped roller 311, and can also reduce the buffer load of the subsequent deceleration plate 4. At the same time, because the slope is gentle, the contact time between the steel pipe and the roller 311 is longer, and the rolling support of the roller 311 is more sufficient, which enables the steel pipe to move smoothly along the path guided by the roller 311.

[0028] Workflow First, according to the actual diameter specification of the steel pipe to be processed, operate the knob 52 on the outer side of the inclined plate 3 to adjust the inclination angle of the baffle 5; ensure that the minimum gap between the baffle 5 and the deceleration plate 4 located directly above it is slightly larger than the diameter of the steel pipe to avoid jamming of the steel pipe, and at the same time keep the soft rubber plate 51 with a triangular front section at the bottom of the baffle 5 facing the collection direction; After the steel pipe completes the annealing processes of heating, heat preservation and cooling inside the annealing device body 1, it is naturally output from the discharge end of the annealing device body 1 and directly enters the blanking frame 2 fixed at the discharge end; as the steel pipe continues to be output, its bottom will contact the inclined plate 3 fixedly installed on the inner wall of the blanking frame 2, and start to slide down along the inclination direction of the inclined plate 3 under the action of gravity; When the steel pipe slides down along the inclined plate 3, it first contacts the round rollers 311 in the mounting grooves 31 opened on the outer wall of the inclined plate 3. Since the two sets of mounting grooves 31 are symmetrically distributed with the longitudinal center line of the inclined plate 3 as the axis of symmetry, and the highest point of the outer ring of all the round rollers 311 is higher than the upper surface of the inclined plate 3, the steel pipe will not directly rub against the inclined plate 3, but move smoothly through the rotation of the round rollers 311. The horizontal round rollers 311 at both ends of the mounting groove 31 first perform preliminary limit guiding on the steel pipe, and then the two left and right sets of inclined round rollers 311 arranged in a splayed shape (the shape of Chinese character "八") further constrain the steel pipe at the center line position of the inclined plate 3, effectively avoiding damage caused by collision at both ends due to deviation during the sliding process of the steel pipe; The steel pipe guided by the round rollers 311 continues to slide down to the bottom of the inclined plate 3, and contacts the deceleration plate 4 made of wear-resistant steel plate fixed on the inclined plate 3 by bolts. A plurality of rubber strips 41 fixed by bonding on the top of the deceleration plate 4 are in contact with the surface of the steel pipe. The rubber strips 41 absorb the kinetic energy of the sliding steel pipe by their own elastic deformation, gradually reduce the moving speed of the steel pipe, and prevent subsequent collision damage caused by excessive speed; The decelerated steel pipe passes through the lower part of the deceleration plate 4 and enters the area of the baffle 5 located directly below the deceleration plate 4; since the baffle 5 and the deceleration plate 4 are arranged in a symmetrical inverted splayed shape, when the steel pipe passes through the gap between the two, it will contact the triangular soft rubber plate 51 at the bottom of the baffle 5, and the soft material of the rubber plate 51 further buffers the residual kinetic energy of the steel pipe, so that the steel pipe smoothly falls into the collection device from the lower part of the baffle 5 along the guiding direction.

[0029] Those skilled in the art should understand that the embodiments of the present utility model shown in the above description and the accompanying drawings are only as examples and do not limit the present utility model. The purpose of the present utility model has been completely and effectively achieved. The functions and structural principles of the present utility model have been shown and illustrated in the embodiments, and the embodiments of the present utility model can have any variations or modifications without departing from the said principles.

Claims

1. A steel pipe annealing device, characterized in that, comprising an annealing device body (1), a blanking frame (2) fixedly mounted at the discharge end of the annealing device body (1), an inclined plate (3) fixedly mounted on the inner wall of the blanking frame (2), a mounting groove (31) opened on the outer wall of the inclined plate (3), and round rollers (311) rotatably mounted on the inner wall of the mounting groove (31) for guiding the pipe material to slide down in a centered position.

2. The steel pipe annealing equipment according to claim 1, characterized in that: The mounting grooves (31) are symmetrically distributed in pairs with the longitudinal center line of the inclined plate (3) as the symmetry axis, and the cross section of each set of the mounting grooves (31) is of a rectangular design.

3. The steel pipe annealing equipment according to claim 2, characterized in that: A plurality of round rollers (311) are rotatably mounted in both sets of the mounting grooves (31), and the highest point of the outer ring of each of the plurality of round rollers (311) is higher than the upper surface of the inclined plate (3).

4. The steel pipe annealing equipment according to claim 3, characterized in that: Among the plurality of round rollers (311), the round rollers (311) located at both ends of the mounting groove (31) are installed in a horizontal direction relative to the upper surface of the inclined plate (3), the remaining round rollers (311) are installed in an obliquely symmetrical manner, and the two left and right sets of oblique round rollers (311) form a guide layout shaped like the Chinese character "eight".

5. The steel pipe annealing equipment according to claim 1, characterized in that: A deceleration plate (4) is fixedly mounted at the bottom of the inclined plate (3) by bolts, and the deceleration plate (4) is made of a wear-resistant steel plate.

6. The steel pipe annealing equipment according to claim 5, characterized in that: A plurality of rubber strips (41) are fixedly mounted on the top of the deceleration plate (4) by adhesion, and the plurality of rubber strips (41) are distributed at equal intervals along the length direction of the deceleration plate (4).

7. The steel pipe annealing equipment according to claim 6, characterized in that: The top of each of the rubber strips (41) is bent toward the inclination direction of the inclined plate (3).

8. The steel pipe annealing equipment according to claim 5, characterized in that: A baffle plate (5) is rotatably mounted inside the inclined plate (3) near the bottom via a rotating shaft, the rotating shaft of the baffle plate (5) extends to the outer side of the inclined plate (3), a knob (52) capable of being rotated and fixed at a certain angle is fixedly mounted at the end of the rotating shaft located on the outer side of the inclined plate (3), and the knob (52) is provided with angle scale marks.

9. The steel pipe annealing equipment according to claim 8, characterized in that: A rubber plate (51) is fixedly mounted at the bottom of the baffle plate (5) by screws, the rubber plate (51) is made of soft rubber with a Shore hardness of 50-70HA, and the front cross section of the rubber plate (51) is of a triangular design.

10. The steel pipe annealing equipment according to claim 9, characterized in that: The baffle plate (5) is located directly below the deceleration plate (4), the installation angles of the baffle plate (5) and the deceleration plate (4) form a symmetrical inverted splayed shape, and the minimum distance between the two is greater than the diameter of the steel pipe.

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