A chuck set for pipe rolling and a pipe feeding apparatus thereof

Abstract

The utility model relates to metal rolling equipment technical field, specifically disclose a chuck suite for pipeline rolling and its pipeline feeding equipment. In chuck suite, along the moving path of pipeline mandrel is sequentially laid with entry chuck and exit chuck, in entry chuck and exit chuck all contain at least main body frame, slewing sleeve, clamping suite and slewing drive part. The utility model discloses by setting entry chuck and exit chuck respectively to the two places of the longer size pipeline mandrel clamping fixed, to this improve its clamping firm degree, and all be provided with slewing drive part on entry chuck and exit chuck, can synchronously drive the pipeline mandrel to rotate actively, to this when facing the slewing work of long size, big weight etc. specification pipeline mandrel, every chuck can all provide necessary driving force, effectively prevented the pipeline mandrel between chuck and happened distortion, slip or vibration.

Description

Technical Field

[0001] This utility model relates to the field of metal rolling equipment technology, specifically to a chuck kit for pipe rolling and its pipe feeding equipment. Background Technology

[0002] In the pipe rolling process, the feeding equipment plays a crucial role. It needs to stably, continuously, and accurately deliver pipe mandrels from upstream processes to the entrance area of ​​the rolling mill, ensuring a continuous and stable supply of raw materials. The chuck assembly is a core component of the feeding equipment, used to precisely and firmly grip the pipe mandrel. It must ensure that the mandrel's axis is strictly aligned with the mill's centerline, and provide sufficient clamping force to stably feed the mandrel into the rolling mill.

[0003] For example, patent application number 202421741022.9 discloses a chuck kit, specifically a cold rolling mill jaw adjustment device, which includes a frame, a hollow rotary shaft, a pusher assembly, at least two clamping jaw assemblies, a drive mechanism, a transmission mechanism, and an adjustment joint. The hollow rotary shaft is rotatably mounted on the frame, and at least two axially extending straight guide grooves are evenly arranged on the outer circumferential surface of the hollow rotary shaft. The pusher assembly is coaxially sleeved on the hollow rotary shaft, and at least two oblique guide grooves corresponding to the straight guide grooves are evenly arranged on the inner wall of the pusher assembly. The clamping jaw assembly slides in the corresponding straight guide grooves, and the clamping jaw assembly is provided with a clamping surface facing the axis of the hollow rotary shaft.

[0004] The aforementioned chuck kit ensures stable clamping of the pipe mandrel, but it does not address the control of the mandrel's rotation. Unstable rotation of the mandrel can easily lead to axial misalignment, resulting in defective pipes. Therefore, there is an urgent need for a chuck kit that can both securely clamp the pipe mandrel and ensure stable and precise rotation. Utility Model Content

[0005] This utility model provides a chuck kit for pipe rolling. Through the joint drive of the inlet chuck and the outlet chuck, a long pipe mandrel can achieve stable rotation, thereby ensuring the alignment of its axis with the center line of the rolling mill.

[0006] This utility model is achieved through the following technical solution: A chuck assembly for pipe rolling includes an inlet chuck and an outlet chuck arranged sequentially along the movement path of a pipe mandrel. Each inlet and outlet chuck includes at least: a main frame for mounting various components; a rotary sleeve movably mounted on the main frame for accommodating the pipe mandrel, with several sets of radially penetrating guide grooves arranged circumferentially on the rotary sleeve; and a clamping assembly for securing the pipe mandrel placed within the rotary sleeve, comprising several sets of clamping blocks and pusher assemblies; wherein the clamping blocks are movably mounted on the guide... The groove contains a clamping surface and a driven inclined block; the pusher assembly includes a drive ring block coaxially fitted outside the rotary sleeve and a clamping drive unit that pushes the drive ring block to move axially. The drive ring block includes an inner ring block and an outer ring block movably fitted outside the inner ring block. The inner side of the inner ring block is provided with a drive inclined groove that can engage with the driven inclined block, so that when the clamping drive unit drives the drive ring block to move axially, it drives the clamping block to move radially; the rotary drive unit is used to drive the rotary sleeve to rotate circumferentially around its central axis.

[0007] As a further improvement of this utility model, the rotary drive unit of the inlet chuck and / or outlet chuck includes a synchronous servo motor, a transmission unit that is driven by the rotary sleeve, and a coupling connecting the two.

[0008] As a further improvement of this utility model, the coupling is a bellows coupling.

[0009] As a further improvement of this utility model, it also includes a control unit, which is electrically connected to the rotary drive unit in the inlet chuck and the outlet chuck.

[0010] As a further improvement of this utility model, the clamping drive unit includes a telescopic part and a drive frame, wherein the drive frame is fitted onto the outer ring block and has an extension end formed thereon that is away from the outer ring block, one end of the telescopic part is fixedly connected to the main frame, and the other end is movably connected to the extension end.

[0011] As a further improvement of this utility model, the extension ends of the inlet chuck and the outlet chuck are respectively placed on different sides of the rotary sleeve.

[0012] As a further improvement of this utility model, a friction-reducing kit is provided between the inner ring block and the outer ring block.

[0013] As a further improvement of this utility model, the inclined directions of the driven inclined blocks and the driving inclined grooves of the inlet chuck and the outlet chuck are opposite, so that when the driving ring blocks on the inlet chuck and the outlet chuck move closer to each other, they drive the gripper blocks closer to the central axis.

[0014] Secondly, this utility model provides a pipe feeding device, which includes any of the above-mentioned pipe rolling chuck kits.

[0015] As a further improvement of this utility model, a feeding guide is provided at the inlet of the outlet chuck. The feeding guide includes a support frame, a limiting part fixedly installed on the support frame, a guiding part movably installed on the support frame, and a buffer part connecting the limiting part and the guiding part. The guiding part is located on the side away from the outlet chuck, and the guiding part includes a guiding opening, a feeding port, and a guiding inclined surface structure connecting the two. The diameter of the guiding opening is larger than the diameter of the feeding port.

[0016] The beneficial effects of this utility model include: By setting inlet and outlet chucks to clamp and fix the long pipe mandrel at two points, the clamping firmness is improved. At the same time, both inlet and outlet chucks are equipped with rotary drive units, which can synchronously and actively drive the pipe mandrel to rotate. Thus, when dealing with the rotation of long and heavy pipe mandrels, each chuck can provide the necessary driving force, effectively preventing the pipe mandrel from twisting, slipping or vibrating between the chucks.

[0017] In the preferred structure, controlling the parameters of the two sets of rotary drive units simultaneously through the same control unit can further improve their synchronization. It can also coordinate the output torque of the two sets of rotary drive units in real time according to the actual processing conditions, thereby keeping the pipe mandrel as a whole highly stable in rotation and greatly reducing the occurrence of situations such as the pipe mandrel's axis deviating from the center line of the rolling mill during rotation.

[0018] In the preferred configuration, the extension ends of the outlet chuck and the inlet chuck are positioned on different sides. In either chuck, the clamping drive unit moves axially via a set of telescopic parts positioned on one side of the rotary sleeve. After long-term use, wear between the drive ring block and the rotary sleeve may increase the friction between them. When the drive ring block is driven axially using only the telescopic part on one side, the increased friction may cause the axial movement of the drive ring block on the side away from the telescopic part to lag, which in turn causes the radial movement of the driven jaw block to lag. Furthermore, this can cause the axis of the clamped and fixed pipe mandrel to deviate from the central axis of the rotary sleeve. By positioning the extension ends of the outlet chuck and the inlet chuck on different sides, when the above-mentioned deviation occurs in one set of chucks, the pipe mandrel can be driven to move in the opposite direction using the other set of chucks, thereby causing its axis to re-align with the central axis. This ensures that the axis of the pipe mandrel is strictly aligned with the center line of the rolling mill during feeding operations before the chuck assembly needs maintenance, thus improving the product yield. Attached Figure Description

[0019] The accompanying drawings are provided below to illustrate the preferred embodiments of this utility model, in order to aid in understanding the purpose and advantages of this utility model, wherein: Figure 1This is a cross-sectional view of the pipeline feeding equipment. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0021] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the construction shown in the accompanying drawings. The terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively. These are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive. Example 1:

[0022] In this embodiment, a chuck kit for pipe rolling is provided. An inlet chuck A and an outlet chuck B are arranged sequentially along the moving path of the pipe mandrel. In the chuck kit, the inlet chuck A is used to receive the pipe mandrel processed upstream, and the outlet chuck B is used to receive the rolled pipe. The inlet chuck A and the outlet chuck B together drive the delivery and rotation of the entire pipe mandrel.

[0023] like Figure 1 As shown, both the inlet chuck A and the outlet chuck B contain at least: Main frame 1, used to install various components.

[0024] The rotary sleeve 2 is movably mounted on the main frame 1 to accommodate the pipe core rod. Three sets of radially penetrating guide grooves 201 are arranged circumferentially on the rotary sleeve 2, and the three sets of guide grooves 201 are evenly distributed.

[0025] The clamping assembly 3, used to fix the pipe mandrel placed inside the rotating sleeve 2, includes three sets of clamping jaw blocks 301 and a set of pusher assembly 302; wherein, one set of clamping jaw blocks 301 is correspondingly movably disposed in a guide groove 201, and each set of clamping jaw blocks 301 includes a clamping surface 301-1 and a driven inclined block 301-2; the pusher assembly 302 includes a drive ring block 302-1 coaxially fitted outside the rotating sleeve 2 and a clamping drive part 302-2 for pushing the drive ring block 302-1 to move axially, and the drive ring block 302-1 includes an inner ring block 302-1-1 and a movable fitting. An outer ring block 302-1-2 is located outside the inner ring block 302-1-1, allowing relative circumferential rotation between the inner and outer ring blocks. The inner side of the inner ring block 302-1-1 is provided with a driving groove 302-1-3 that can engage with the driven inclined block 301-2. In this embodiment, the arrangement of the driven inclined block 301-2 and the driving groove 302-1-3 can refer to conventional existing chucks. When the clamping drive unit 302-2 drives the driving ring block 302-1 to move axially, it can drive the gripper block 301 to move radially. Therefore, under the above-described clamping kit 3 structure, with… Figure 1 Taking the outlet chuck B on the left side as an example, when the drive ring block 302-1 moves axially to the right, the drive ring block 302-1 will cause the gripper block 301 to move toward the position of the central axis. When the rotary sleeve 2 contains the pipe mandrel, the three sets of gripper blocks 301 can simultaneously retract inward to complete the clamping and fixing of the pipe mandrel.

[0026] The rotary drive unit 4 is used to drive the rotary sleeve 2 to rotate around its central axis, and at the same time drive the gripper block 301 and the inner ring block 302-1-1 to rotate synchronously. Since the outer ring block 302-1-2 and the inner ring block 302-1-1 are separated, the rest of the clamping kit 3 will not rotate with it.

[0027] In this structure, the inlet chuck A and the outlet chuck B can synchronously and actively drive the pipe mandrel to rotate. This ensures that each chuck can provide the necessary driving force when dealing with long, heavy pipe mandrels, effectively preventing problems such as twisting, slipping, or vibration of the pipe mandrel between the chucks. Consequently, the deviation of the pipe mandrel's axis from the mill centerline is reduced, improving the pipe's production qualification rate.

[0028] Preferably, such as Figure 1As shown, in this embodiment, the inlet chuck A rotates via a rotary drive unit 4 located in the upstream processing equipment, while the rotary drive unit 4 in the outlet chuck B includes a synchronous servo motor 401, a transmission unit connected to the rotary sleeve 2, and a coupling 402 connecting the two. More preferably, the coupling 402 used in this embodiment is a bellows coupling. The synchronous servo motor 401 provides more precise control over parameters such as output torque, while the bellows coupling utilizes the flexible deformation of a thin-walled metal to transmit torque, eliminating the backlash error caused by gear meshing and slider wear in traditional couplings 402. With this combination, the output parameters of the servo motor can be transmitted to the rotary sleeve 2 without loss, thereby achieving precise control over the rotational speed of the internal pipe mandrel.

[0029] Preferably, the chuck assembly in this embodiment also includes a control unit, which is electrically connected to the rotary drive units 4 in both the inlet chuck A and the outlet chuck B. This allows the control unit to precisely control both rotary drive units 4 simultaneously, coordinating their output parameters so that the inlet chuck A and outlet chuck B can synchronously drive the pipe mandrel they hold to rotate stably.

[0030] Preferably, such as Figure 1As shown, the clamping drive unit 302-2 includes a telescopic part 302-2-1 and a drive frame 302-2-2. The drive frame 302-2-2 is fitted onto the outer ring block 302-1-2, and has an extension end 302-2-2a formed thereon, which is away from the outer ring block 302-1-2. One end of the telescopic part 302-2-1 is fixedly connected to the main frame 1, and the other end is movably connected to the extension end 302-2-2a. More preferably, the extension ends 302-2-2a of the inlet chuck A and the outlet chuck B are respectively placed on different sides of the rotary sleeve 2. In this embodiment, the extension end 302-2-2a of the inlet chuck A is placed at the top, while the extension end 302-2-2a of the outlet chuck B is placed at the bottom. First, with this structure, the telescopic part 302-2-1 can be arranged away from the rotary sleeve 2 and other structures, thereby reducing interference between the two and facilitating maintenance and other work for each. Secondly, the different placement of the extension end 302-2-2a helps to maintain the precise clamping of the pipe mandrel by the clamping kit 3 even after long-term use, ensuring that the axis of the pipe mandrel coincides with the central axis of the rotating sleeve 2, and thus with the center line of the rolling mill. The specific principle is as follows: After long-term use of the chuck kit, wear between the drive ring block 302-1 and the rotating sleeve 2, and depletion of lubricant may increase the friction between them. At this time, when the drive ring block 302-1 is driven to move axially by the telescopic part 302-2-1 on one side, the friction may cause the axial movement of the drive ring block 302-1 on the side away from the telescopic part 302-2-1 to lag, thereby causing the radial movement of the gripper block 301 driven on that side to lag. The movement is also delayed, which further causes the axis of the clamped and fixed pipe mandrel to deviate from the central axis of the rotating sleeve 2. However, when the extension end 302-2-2a in the outlet chuck B and the inlet chuck A is placed on different sides, if the above-mentioned offset occurs in one set of chucks, the other set of chucks can normally drive the position of the pipe mandrel back to the correct position if there is no increase in friction. Even if there is an increase in friction in the other chuck, it will drive the pipe mandrel to move to the side opposite to the deviation direction driven by the first chuck, which will cause its axis to re-align with the central axis. In this way, before the chuck kit needs maintenance, it can ensure that the axis of the pipe mandrel is strictly aligned with the center line of the rolling mill during the feeding operation, thus ensuring the smooth processing of the pipe.

[0031] Preferably, a friction-reducing kit 302-1-4 is provided between the inner ring block 302-1-1 and the outer ring block 302-1-2. In this embodiment, a rotating bearing is provided between the inner ring block 302-1-1 and the outer ring block 302-1-2.

[0032] Preferably, the inclined directions of the driven inclined block 301-2 and the driving inclined groove 302-1-3 of the inlet chuck A and the outlet chuck B are opposite, so that... Figure 1 Taking the perspective of the middle as an example, when the drive ring blocks 302-1 on the inlet chuck A and the outlet chuck B move closer to each other, they drive the gripper blocks 301 closer to the central axis, thereby forming a clamping of the pipe mandrel. Correspondingly, when the drive ring blocks 302-1 of the two move further apart, the clamping of the pipe mandrel can be relaxed. Example 2:

[0033] This embodiment provides a pipeline feeding device, such as... Figure 1 As shown, it includes the pipe rolling chuck kit of Embodiment 1, and a feed guide C is provided at the inlet of the outlet chuck B.

[0034] The feed guide C includes a support frame C01, a limiting part C02 fixedly mounted on the support frame C01, a guide part C03 movably mounted on the support frame C01, and a buffer part connecting the limiting part C02 and the guide part C03. In this embodiment, the buffer part is a buffer spring. The guide part C03 is located on the side away from the outlet chuck B, and includes a guide opening C03-1, a feed inlet C03-2, and a guide inclined structure C03-3 connecting the two. The diameter of the guide opening C03-1 is larger than the diameter of the feed inlet C03-2. This ensures that when the mandrel initially enters the outlet chuck B, it is corrected by the feed guide C and does not experience a significant deviation in its axis. During this process, the guide inclined structure C03-3 is mainly used to correct the mandrel. When the two collide, the buffer part can absorb the impact of the collision to avoid severe impact damage to the outer surface of the mandrel.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A chuck set for pipe rolling, characterized by, An inlet chuck (A) and an outlet chuck (B) are sequentially arranged along the moving path of the mandrel in the pipeline; each of the inlet chuck (A) and the outlet chuck (B) includes at least: The main frame (1) is used to install various components; A rotary sleeve (2) is movably mounted on the main frame (1) to accommodate the pipe core rod. Several sets of radially penetrating guide grooves (201) are arranged circumferentially on the rotary sleeve (2). The clamping assembly (3) is used to fix the pipe mandrel placed inside the rotary sleeve (2), and includes several sets of clamping blocks (301) and pusher assemblies (302); wherein, the clamping blocks (301) are movably disposed in the guide groove (201), and include a clamping surface (301-1) and a driven inclined block (301-2); the pusher assembly (302) includes a drive ring block (302-1) coaxially fitted outside the rotary sleeve (2) and a clamping drive that pushes the drive ring block (302-1) to move axially. The drive ring block (302-1) includes an inner ring block (302-1-1) and an outer ring block (302-1-2) movably fitted outside the inner ring block (302-1-1). The inner side of the inner ring block (302-1-1) is provided with a drive groove (302-1-3) that can engage with the driven inclined block (301-2), so that when the clamping drive part (302-2) drives the drive ring block (302-1) to move axially, it drives the gripper block (301) to move radially. The rotary drive unit (4) is used to drive the rotary sleeve (2) to rotate around its central axis.

2. The pipe-rolling chuck set according to claim 1, characterized by The rotary drive unit (4) of the inlet chuck (A) and / or the outlet chuck (B) includes a synchronous servo motor (401), a transmission unit that is connected to the rotary sleeve (2) and a coupling (402) connecting the two.

3. The pipe-rolling chuck set according to claim 2, wherein The coupling (402) is a bellows coupling.

4. The pipe-rolling chuck set according to any one of claims 1 to 3, characterized in that, It also includes a control unit, which is electrically connected to the rotary drive unit (4) in the inlet chuck (A) and the outlet chuck (B).

5. The pipe-rolling chuck set of claim 1, wherein The clamping drive unit (302-2) includes a telescopic part (302-2-1) and a drive frame (302-2-2), wherein the drive frame (302-2-2) is fitted onto the outer ring block (302-1-2) and has an extension end (302-2-2a) formed thereon away from the outer ring block (302-1-2). One end of the telescopic part (302-2-1) is fixedly connected to the main frame (1), and the other end is movably connected to the extension end (302-2-2a).

6. A pipe-rolling chuck set according to claim 5, wherein The extension ends (302-2-2a) of the inlet chuck (A) and the outlet chuck (B) are respectively placed on different sides of the rotary sleeve (2).

7. The pipe-rolling chuck set of claim 1, wherein A friction-reducing kit (302-1-4) is provided between the inner ring block (302-1-1) and the outer ring block (302-1-2).

8. The pipe-rolling chuck set of claim 1, wherein The driven inclined blocks (301-2) and driving inclined grooves (302-1-3) of the inlet chuck (A) and the outlet chuck (B) are inclined in opposite directions, so that when the driving ring blocks (302-1) on the inlet chuck (A) and the outlet chuck (B) move closer to each other, they respectively drive the gripper blocks (301) to move closer to the central axis.

9. A pipe feeding apparatus characterized by, It includes a chuck assembly for pipe rolling as described in any one of claims 1 to 8.

10. A pipe feeding apparatus according to claim 9, wherein A feed guide (C) is provided at the inlet of the outlet chuck (B). The feed guide (C) includes a support frame (C01), a limiting part (C02) fixedly installed on the support frame (C01), a guide part (C03) movably installed on the support frame (C01), and a buffer part (C04) connecting the limiting part (C02) and the guide part (C03). The guide part (C03) is located on the side away from the outlet chuck (B), and the guide part (C03) includes a guide opening (C03-1), a feed inlet (C03-2), and a guide inclined structure (C03-3) connecting the two. The diameter of the guide opening (C03-1) is larger than the diameter of the feed inlet (C03-2).

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