Round billet hot centering device

Abstract

The utility model discloses a round billet hot centering device which comprises a perforating machine, an upper roller and a lower roller, the upper roller and the lower roller are arranged on the perforating machine, the upper roller and the lower roller arranged on the perforating machine are matched with a round billet in a contact mode, a pushing machine is arranged at the side end, away from the perforating machine, of the round billet, and a base is arranged at the front end of the pushing machine. A conical pressing head is arranged on the base, a circumferential groove is formed in the outer surface of the conical pressing head in the longitudinal axis direction, first supporting assemblies are arranged on the side, away from the material pushing head, of the round billet at intervals, and second supporting assemblies are arranged on the side, close to the material pushing head, of the round billet at intervals. The second supporting assemblies are arranged up and down and make contact with the round billets. Due to the fact that hot centering is carried out in the round billet rolling process of the perforating machine, the round billet does not have temperature loss, a traditional hot centering device is omitted, and cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel pipe production, and in particular relates to a round billet hot centering device. Background Art

[0002] In steel pipe production, the round billet hot centering machine punches holes on the end face of the round billet after it is heated. The purpose of centering the tail end of the round billet is to eliminate the annular burr produced at the tail of the rough tube during punching, so as to facilitate the insertion of the mandrel before rolling and improve the inner surface quality of the steel pipe and the service life of the mandrel. It can also prevent defects such as "ears" from appearing at the tail of the rough tube and avoid jamming accidents after punching.

[0003] The traditional hot centering is set at the end of the front end of the perforation, and is sent to the hot centering station by the conveyor roller. After the centering machine is centered, the tube billet is transported to the front end of the perforation machine by the conveyor roller, and then turned into the receiving trough for perforation and rolling. This method solves the need for tube billet centering, but loses the temperature of the tube billet, which brings technical difficulties to the subsequent perforation machine and tube rolling machine. In addition, the traditional hot centering equipment is expensive, which increases the rolling cost.

[0004] In view of the above factors, a round billet heat centering device is specially designed. Since the heat centering is performed during the round billet rolling process of the piercing machine, the round billet will not have temperature loss, and the traditional heat centering device is omitted, thereby reducing costs. Utility Model Content

[0005] The utility model aims to provide a round blank heat centering device to solve the problems raised in the above background technology.

[0006] The purpose of the utility model is achieved through the following technical solutions: a round billet heat centering device, comprising a puncher and an upper roller and a lower roller arranged on the puncher, wherein the upper roller and the lower roller arranged on the puncher are in contact with the round billet, a pusher is arranged on one side of the round billet away from the puncher, a base is arranged at the front end of the pusher, a conical pressure head is arranged on the base, and a circumferential groove is formed on the outer surface of the conical pressure head in the longitudinal axis direction;

[0007] A first supporting component is arranged at a distance from the pusher on the side of the round billet, and the first supporting components are arranged at intervals. A second supporting component is arranged at a side of the round billet close to the pusher, and the second supporting component is arranged at upper and lower portions to contact the round billet.

[0008] Furthermore, the outer surface of the conical pressure head is machined with circumferential grooves with a width of 2mm-3mm and a depth of 0.5mm-1mm at intervals of 5mm-10mm in the longitudinal direction.

[0009] Furthermore, the first supporting component comprises a movable rolling member and a positioning rolling member, the movable rolling member and the positioning rolling member are arranged at intervals, the movable rolling member can move on the round blank, the moving interval is 20-50cm, and the movable rolling member is a movable squeezing roller structure;

[0010] The positioning rolling parts are symmetrically arranged up and down, and the positioning rolling parts are arranged with a guide roller structure.

[0011] Furthermore, the second supporting assembly is arranged at intervals at the horizontal guide gap position corresponding to the punching machine, and the distance of the horizontal guide gap is controlled to be 50-70 cm;

[0012] The second supporting assembly is symmetrically arranged up and down and contacts the circumferential surface of the round blank.

[0013] Further, the second supporting component includes a positioning end, the positioning end is L-shaped as a whole, and the positioning end is fixedly provided with a positioning cavity sleeve, a positioning mechanism is movably provided in the positioning cavity sleeve, a limiting groove is provided on one side of the positioning mechanism, and a limiting column is provided on the end surface of the positioning end to cooperate with the limiting groove;

[0014] One end of the positioning cavity sleeve is connected to the screw cavity sleeve, and the end of the screw cavity sleeve is fixed and flush with the positioning cavity sleeve.

[0015] Furthermore, a movable sleeve rod is arranged inside the screw cavity sleeve, and a tilting pin is fixedly arranged on the movable sleeve rod, and the tilting angle of the tilting pin is the same as the angle of the positioning matching hole opened on the positioning mechanism.

[0016] Furthermore, the end of the screw cavity sleeve is connected to the telescopic output end of the electric telescopic cylinder through a screw, and the telescopic distance of the telescopic output end of the cylinder is the same as the matching depth between the front end of the tilt pin and the positioning matching hole.

[0017] Furthermore, the positioning mechanism is a positioning block structure, a positioning convex plate is provided on the positioning block structure, and the positioning convex plate is a trapezoidal structure;

[0018] The positioning convex plate cooperates with a detachable supporting end sleeved on the outer end of the positioning cavity sleeve.

[0019] Furthermore, the detachable support end is provided with a positioning groove which cooperates with the positioning convex plate;

[0020] The detachable support end is provided in a hollow rectangular structure;

[0021] The lower end of the detachable supporting end is provided with a connecting column matched with the positioning end.

[0022] A round billet heat centering method comprises the following steps:

[0023] When the pusher pushes the round billet to contact the upper and lower rollers of the puncher, the round billet is blocked. The pusher head at the front end of the pusher is provided with a conical pressure head to form an extrusion pressure with the end face of the tail end of the round billet. At this time, the front end of the round billet is sucked in by the upper / lower rollers rotating at a low speed, and the round billet rotates forward slowly with the rollers. The rear end of the round billet is pushed by the pusher moving forward. The conical pressure head on the pusher head at the front end of the pusher moves forward with the pusher at the same time. The conical pressure head pushes out a hole in the middle of the tail end face of the round billet rotating forward. After centering, the round billet is directly rolled at a high speed by the puncher. The pusher is withdrawn, and the cooling water passing through the nozzle cools the conical pressure head at the front end of the pusher head.

[0024] Wherein, as the round billet rotates forward slowly with the rolling roller, the round billet is centered and straightened by a second supporting assembly provided on one side of the round billet near the pushing head, and the second supporting assembly is provided with upper and lower portions in contact with the round billet;

[0025] The second supporting component includes a positioning end, which is L-shaped as a whole, and is fixedly provided with a positioning cavity sleeve, a positioning mechanism is movably provided in the positioning cavity sleeve, a limiting groove is provided on one side of the positioning mechanism, and a limiting column is provided on the end surface of the positioning end to cooperate with the limiting groove;

[0026] The detachable support end cooperates with the outer end of the positioning cavity sleeve, and a positioning groove cooperating with the positioning convex plate is arranged on the detachable support end, and a connecting column cooperating with the positioning end is arranged at the lower end of the detachable support end.

[0027] Wherein, a first supporting assembly is arranged on the side of the round blank away from the pusher, the first supporting assembly comprises a movable rolling part and a positioning rolling part, the movable rolling part and the positioning rolling part are arranged at intervals, the movable rolling part can move on the round blank, the moving interval is 20-50cm, the movable rolling part, wherein the movable rolling part is a roller structure;

[0028] The positioning rolling parts are symmetrically arranged up and down, and the positioning rolling parts are arranged with a guide roller structure to ensure that they can be concentric without deviation after being squeezed and deformed by the movable rolling parts.

[0029] Compared with the prior art, the utility model has the following beneficial effects:

[0030] Since the utility model performs heat centering during the process of rolling the round billet by the punching machine, the round billet will not have temperature loss, and the traditional heat centering device is omitted, thereby reducing the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is an overall schematic diagram of the utility model;

[0032] Figure 2 It is a schematic diagram of the second supporting component of the utility model;

[0033] Figure 3 This utility model Figure 2 A partial enlarged schematic diagram of

[0034] Figure 4 It is a schematic diagram of a conical pressure head on a pusher of the utility model. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0038] like Figure 1-4 As shown, a round billet heat centering device comprises a puncher 1 and an upper roller and a lower roller arranged on the puncher 1, wherein the upper roller and the lower roller arranged on the puncher 1 are in contact with and cooperate with a round billet 2, a pusher 3 is arranged at one end of the round billet 2 away from the puncher 1, a base 4 is arranged at the front end of the pusher 3, a conical pressure head 5 is arranged on the base 4, and a circumferential groove 15 is formed on the outer surface of the conical pressure head 5 in the longitudinal axis direction;

[0039] Among them, the pusher 3 is an existing technology that cooperates with the puncher. A first supporting component 6 is provided on the side of the round billet 2 away from the pusher 3, and the first supporting component 6 is arranged at intervals. A second supporting component 7 is provided on the side of the round billet 2 adjacent to the pusher 3, and the second supporting component 7 is provided above and below to contact the round billet 2.

[0040] The conical indenter 5 is turned, and the conical indenter 5 is heat treated in a pit furnace after turning. Heat treatment process: When the pit furnace is heated to 960℃-990℃, the conical indenter 5 after turning is loaded into the material frame and then hoisted into the pit furnace by a crane with a sling. After closing the furnace cover, keep it warm. At the same time, industrial alcohol is titrated into the furnace for 30-45 minutes, and then distilled water is titrated for 90 minutes-120 minutes. After that, the furnace cover is opened, the material frame containing the conical indenter 5 after turning is hoisted out, and it is placed on the ground to be air-cooled to room temperature. The heat treatment process of the conical indenter 5 is completed, so that a protective film is formed on the outer surface of the conical indenter 5 after turning, and the mechanical properties and high temperature wear resistance of the conical indenter 5 after turning are improved.

[0041] In order to facilitate the formation when in use, a conical pressure head 5 is provided at the front end of the pushing head to form an extrusion pressure with the tail end face of the round billet 2 to heat-center the round billet. The outer surface of the conical pressure head 5 is turned into a circumferential groove 15 with a width of 2mm-3mm and a depth of 0.5mm-1mm every 5mm-10mm in the longitudinal direction.

[0042] In order to ensure stable perforation after heat centering in the use state, the first supporting component 6 includes a movable rolling member 6-1 and a positioning rolling member 6-2, the movable rolling member 6-1 and the positioning rolling member 6-2 are arranged at intervals, the movable rolling member 6-1 can move on the round blank 2, the moving interval is 20-50cm, and the movable rolling member 6-1 is a movable extrusion roller structure;

[0043] The positioning rolling member 6 - 2 is symmetrically arranged up and down, and the positioning rolling member 6 - 2 adopts a guide roller structure.

[0044] In order to ensure the coaxiality of the hot centering punching in use, the second supporting assembly 7 is arranged at intervals at the horizontal guide gap position corresponding to the punching machine 1, and the distance of the horizontal guide gap is controlled at 50-70cm;

[0045] The second supporting assembly 7 is symmetrically arranged up and down and contacts the circumferential surface of the round blank 2 .

[0046] The second supporting component 7 includes a positioning end 8, which is L-shaped as a whole, and a positioning cavity sleeve is fixedly provided on the positioning end 8, and a positioning mechanism 12 is movably provided in the positioning cavity sleeve, and a limiting groove 14 is provided on one side of the positioning mechanism 12, and a limiting column 16 is provided on the end surface of the positioning end 8 to cooperate with the limiting groove 14;

[0047] One end of the positioning cavity sleeve is connected to the screw cavity sleeve 9, and the end of the screw cavity sleeve 9 is fixed flush with the positioning cavity sleeve.

[0048] In order to facilitate the cooperation of the tilting pin 11 with the positioning matching hole through the extension and retraction of the cylinder during use, a movable sleeve rod 10 is provided in the screw chamber sleeve 9, and the tilting pin 11 is fixedly provided on the movable sleeve rod 10. The inclination angle of the tilting pin 11 is the same as the angle of the positioning matching hole opened on the positioning mechanism 12.

[0049] In order to facilitate the cooperation between the tilting pin 11 and the positioning fitting hole through the extension and retraction of the cylinder during use, the end of the screw cavity sleeve 9 is connected to the telescopic output end of the electric telescopic cylinder through a screw, and the telescopic distance of the telescopic output end of the cylinder is the same as the cooperation depth between the front end of the tilting pin 11 and the positioning fitting hole.

[0050] In order to facilitate the formation of a positioning convex plate and a positioning groove to fix the detachable support end 13 in the use state, the positioning mechanism 12 is a positioning block structure, and the positioning block structure is provided with a positioning convex plate, and the positioning convex plate is a trapezoidal structure;

[0051] The positioning convex plate cooperates with a detachable supporting end 13 sleeved on the outer end of the positioning cavity sleeve.

[0052] In order to achieve detachable replacement in the use state, the detachable support end 13 is provided with a positioning groove that cooperates with the positioning convex plate, and the detachable support end 13 is provided with a hollow rectangular structure;

[0053] The lower end of the detachable supporting end 13 is provided with a connecting column 17 that cooperates with the positioning end 8 .

[0054] A method for hot centering a round billet comprises the following steps:

[0055] When the pusher 3 pushes the round billet 2 to contact the upper roller and the lower roller of the punching machine, the round billet 2 is blocked, and a base 4 is provided at the front end of the pusher 3. A conical pressure head 5 is provided on the base 4 to form an extrusion pressure with the tail end face of the round billet 2. At this time, the front end of the round billet 2 is sucked in by the upper roller / lower roller rotating at a low speed, and the round billet 2 rotates forward slowly with the rollers. The rear end of the round billet 2 is pushed by the forward-moving pusher 3, and the conical pressure head 5 on the pusher head at the front end of the pusher 3 moves forward with the pusher 3 at the same time. The conical pressure head 5 pushes out a hole in the middle of the tail end face of the round billet 2 rotating forward. After centering, the round billet 2 is directly rolled at a high speed by the punching machine 1, and the pusher 3 is withdrawn. The cooling water passing through the water nozzle cools the conical pressure head 5 at the front end of the pusher head.

[0056] The round billet 2 is centered and straightened by a second supporting assembly 7 provided on one side of the round billet 2 near the pusher head 3 while the round billet 2 is rotated forward slowly with the rollers. The second supporting assembly 7 is provided with upper and lower portions in contact with the round billet 2.

[0057] The second supporting component 7 includes a positioning end 8, which is L-shaped as a whole, and a positioning cavity sleeve is fixedly provided on the positioning end 8, and a positioning mechanism 12 is movably provided in the positioning cavity sleeve, and a limiting groove 14 is provided on one side of the positioning mechanism 12, and a limiting column 16 is provided on the end surface of the positioning end 8 to cooperate with the limiting groove 14;

[0058] The detachable support end 13 is matched with the outer end of the positioning cavity sleeve, and a positioning groove matched with the positioning convex plate is arranged on the detachable support end 13, and a connecting column 17 matched with the positioning end 8 is arranged at the lower end of the detachable support end 13;

[0059] Wherein, a first supporting assembly 6 is arranged on the side of the round blank 2 away from the pushing head 3, and the first supporting assembly 6 comprises a movable rolling member 6-1 and a positioning rolling member 6-2, and the movable rolling member 6-1 and the positioning rolling member 6-2 are arranged at intervals, and the movable rolling member 6-1 can move on the round blank 2, and the moving interval is 20-50cm, and the movable rolling member 6-1, wherein the movable rolling member 6-1 is a roller structure;

[0060] The positioning rolling member 6-2 is symmetrically arranged up and down, and the positioning rolling member 6-2 adopts a guide roller structure to ensure that it can be concentric and not deviated after being squeezed and deformed by the movable rolling member 6-1.

[0061] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0062] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A round billet hot centering device, comprising a puncher (1) and an upper roller and a lower roller arranged on the puncher (1), wherein the upper roller and the lower roller arranged on the puncher (1) are in contact with and cooperate with the round billet (2), characterized in that: A pusher (3) is provided at one end of the round billet (2) away from the puncher (1), a base (4) is provided at the front end of the pusher (3), a conical pressure head (5) is provided on the base (4), and a circumferential groove (15) is provided on the outer surface of the conical pressure head (5) in the longitudinal direction; A first supporting assembly (6) is arranged on the side of the round billet (2) away from the pusher (3), and the first supporting assembly (6) is arranged at intervals. A second supporting assembly (7) is arranged on the side of the round billet (2) adjacent to the pusher (3), and the second supporting assembly (7) is arranged at the top and bottom to contact the round billet (2).

2. The round billet heat centering device according to claim 1, characterized in that: The outer surface of the conical pressure head (5) is machined with circumferential grooves (15) with a width of 2mm-3mm and a depth of 0.5mm-1mm at intervals of 5mm-10mm in the longitudinal direction.

3. The round billet heat centering device according to claim 2, characterized in that: The first supporting component (6) comprises a movable rolling member (6-1) and a positioning rolling member (6-2), wherein the movable rolling member (6-1) and the positioning rolling member (6-2) are arranged at intervals, and the movable rolling member (6-1) can move on the round blank (2) with a moving interval of 20-50 cm, and the movable rolling member (6-1) is a movable squeezing roller structure; The positioning rolling member (6-2) is symmetrically arranged up and down, and the positioning rolling member (6-2) is arranged in a guide roller structure.

4. The round billet heat centering device according to claim 3, characterized in that: The second supporting assembly (7) is arranged at intervals at the horizontal guide gap position corresponding to the punching machine (1), and the distance of the horizontal guide gap is controlled to be 50-70 cm; The second supporting assembly (7) is symmetrically arranged up and down and is in contact with the circumferential surface of the round blank (2).

5. The round billet heat centering device according to claim 4, characterized in that: The second supporting component (7) comprises a positioning end (8), the positioning end (8) is L-shaped as a whole, and the positioning end (8) is fixedly provided with a positioning cavity sleeve, a positioning mechanism (12) is movably provided in the positioning cavity sleeve, a limiting groove (14) is provided on one side of the positioning mechanism (12), and a limiting column (16) is provided on the end surface of the positioning end (8) to cooperate with the limiting groove (14); One end of the positioning cavity sleeve is connected to the screw cavity sleeve (9), and the end of the screw cavity sleeve (9) is fixed flush with the positioning cavity sleeve.

6. The round billet heat centering device according to claim 5, characterized in that: A movable sleeve rod (10) is arranged inside the screw cavity sleeve (9), and a tilting pin (11) is fixedly arranged on the movable sleeve rod (10). The tilting angle of the tilting pin (11) is the same as the angle of the positioning matching hole opened on the positioning mechanism (12).

7. The round billet heat centering device according to claim 6, characterized in that: The end of the screw cavity sleeve (9) is connected to the telescopic output end of the electric telescopic cylinder through a screw, and the telescopic distance of the telescopic output end of the cylinder is the same as the matching depth between the front end of the tilting pin (11) and the positioning matching hole.

8. The round billet heat centering device according to claim 7, characterized in that: The positioning mechanism (12) is a positioning block structure, a positioning convex plate is provided on the positioning block structure, and the positioning convex plate is a trapezoidal structure; The positioning convex plate cooperates with a detachable supporting end (13) sleeved on the outer end of the positioning cavity sleeve.

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