A pipe blocking mechanism for seamless steel pipe piercing

Abstract

The utility model discloses a kind of pipe blocking mechanisms for seamless steel tube piercing, belong to steel pipe production technical field, including rack, pipe blocking assembly is provided on rack, top rod is inserted in pipe blocking assembly, top rod is used to penetrate through rough pipe, rough pipe is blocked by pipe blocking assembly to pull top rod, hook pipe assembly is provided below rack, rough pipe can be prevented by pipe blocking assembly and be brought into pipe blocker and jam, reduce the generation of the phenomenon that rough pipe with bevel is difficult to come out, and material is not smooth.

Description

Technical Field

[0001] This utility model belongs to the field of steel pipe production technology, specifically a pipe-blocking mechanism for piercing seamless steel pipes. Background Technology

[0002] In the production process of seamless steel pipes, the piercing process is a crucial step in transforming a solid round steel billet into a hollow tube. The main purpose of piercing is to utilize the rotating roller system and mandrel of the skew rolling piercing mill to form a hollow tube with a certain wall thickness and inner diameter under high temperature and strong plastic deformation conditions. This lays the foundation for subsequent processing steps such as elongation, sizing, and reduction. The piercing quality directly affects the inner diameter accuracy, wall thickness uniformity, and stability of subsequent processes. Therefore, the forming control of the tube during the piercing process is of paramount importance.

[0003] However, during the piercing process, due to the intense plastic deformation of the metal at high temperatures, the tip of the capillary tube usually cannot maintain an ideal flat shape, and the end will exhibit obvious irregularities, commonly including eccentric openings, tears, and even more serious beveled openings. The large angle at the end of the beveled capillary tube means that when the push rod is withdrawn and the capillary tube is temporarily stopped by the stopper, its end may enter the stopper's working area at an angle, thus posing a risk of the capillary tube getting stuck, flattened, or entering the wrong position. Utility Model Content

[0004] The purpose of this utility model is to provide a pipe-blocking mechanism for piercing seamless steel pipes, so as to solve at least one aspect of the problems and defects mentioned in the background art.

[0005] A tube-blocking mechanism for piercing seamless steel pipes is provided, comprising a frame, a tube-blocking assembly, a push rod inserted inside the tube-blocking assembly, the push rod being used to penetrate the capillary tube, the tube-blocking assembly blocking the capillary tube to pull out the push rod, and a tube-hooking assembly being provided below the frame.

[0006] Furthermore, the tube-blocking assembly includes two mounting seats, which are mounted on the frame, and a tube-blocking device is disposed between the two mounting seats, with a push rod movably connected inside the tube-blocking device.

[0007] Furthermore, the tube stopper is provided with a movable hole for penetrating the capillary tube.

[0008] Furthermore, a pipe-passing notch is provided on one side of the upper part of the pipe-blocking device, which is a notch formed by cutting off one-quarter of the pipe on the pipe-blocking device.

[0009] Furthermore, the depth H of the notch in the through-hole groove along the axial direction of the movable hole is 5-10 cm.

[0010] Furthermore, the diameter of the movable hole is 1.2-1.5 times the diameter of the push rod hole.

[0011] Furthermore, a tube stopper is threaded between the two mounting bases.

[0012] Furthermore, the hook tube assembly includes a support base, on which a rotating shaft is rotatably connected, and on which a plurality of circulating material-pulling hooks are fixedly connected, the plurality of circulating material-pulling hooks being used to poke the capillary tube that is limited by the tube stopper.

[0013] Furthermore, each of the aforementioned circulating feeding hooks is provided with a claw in front, which contacts the tail of the capillary tube to achieve feeding and discharging.

[0014] Furthermore, the tube stopper and the material-pulling hook of the tube assembly are located in the same longitudinal plane, so that the tube can be directly guided into the next process by the material-pulling hook after the push rod is withdrawn.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: The push rod of the piercing machine pushes forward from inside the tube retainer assembly. After piercing, the tube is formed and temporarily coaxial with the push rod. When the push rod retracts, the end of the tube is limited by the tube retainer assembly to prevent it from being carried into the tube retainer assembly. When the push rod is completely withdrawn, the hook assembly starts to move, rotating to hook the tail of the tube, pulling the tube out and conveying it to the next process, realizing automated flow. The tube retainer assembly provides axial limit to ensure that the tube is not carried into the movable hole by the push rod. The push rod slides along the inside of the tube retainer assembly, and the hook assembly realizes the automatic output and conveying of the tube through the rotation of the material-pulling hook. The whole process avoids tube jamming, deviation and impact, improves the continuity and automation of the piercing production line. The reliable limit and support of the tube during the push rod withdrawal process prevents the tube from being carried into the tube retainer groove and jamming, reducing the phenomenon of difficulty in removing oblique tubes and poor material pulling. Attached Figure Description

[0016] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 A schematic diagram of the overall structure of a pipe-stopping mechanism for piercing seamless steel pipes; Figure 2 This is a front view structural diagram of the baffle assembly provided by this utility model; Figure 3 This is a top view of the baffle assembly provided by this utility model; Figure 4 This is a top view of the hook tube assembly provided by this utility model.

[0018] In the diagram: 1. Frame; 2. Pipe stop assembly; 21. Mounting base; 22. Pipe stopper; 221. Movable hole; 222. Pipe notch; 3. Top rod; 4. Pipe hook assembly; 41. Support base; 42. Rotating shaft; 43. Circulating material feeding hook; 44. Hook claw; 100. Capillary tube. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0020] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0022] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0025] Please see Figure 1-3 As shown in the embodiment of this utility model, a tube-blocking mechanism for piercing seamless steel pipes is provided. A top rod 3 is inserted inside the tube-blocking assembly 2. The top rod 3 is used to penetrate the capillary tube 100. The tube-blocking assembly 2 blocks the capillary tube 100 to pull out the top rod 3. A hook tube assembly 4 is provided below the frame 1. The push rod 3 of the piercing machine pushes forward from the tube-stopping assembly 2. After piercing, the tube 100 is formed and temporarily coaxial with the push rod 3. When the push rod 3 retracts, the end of the tube 100 is limited by the tube-stopping assembly 2 to prevent it from being carried into the tube-stopping assembly 2. When the push rod 3 is completely withdrawn, the hook assembly 4 starts to operate, rotating and hooking the tube 100, pulling the tube 100 out and conveying it to the next process, realizing automated flow. The tube-stopping assembly 2 provides axial limitation to ensure that the tube 100 is not carried into the tube by the push rod 3. The movable hole 221; the push rod 3 slides along the inside of the baffle assembly 2, and the hook assembly 4 realizes the automatic output and conveying of the tube 100 through the rotation of the circulating material feeding hook 43. The whole process avoids the tube 100 from getting stuck, deviating and impacting, and improves the continuity and automation of the perforation production line. The reliable limiting and support of the tube 100 during the withdrawal process of the push rod 3 prevents the tube 100 from being carried into the baffle groove and getting stuck, and reduces the phenomenon of difficulty in getting the oblique tube 100 out and poor material feeding.

[0026] In one embodiment, see Figure 1 and Figure 2 As shown, the pipe-blocking assembly 2 includes two mounting seats 21, which are mounted on the frame 1. A pipe-blocking device 22 is provided between the two mounting seats 21, and a push rod 3 is movably connected inside the pipe-blocking device 22. In a specific implementation, the pipe-blocking assembly 2 includes two mounting seats 21, which are fixed on the left and right sides of the frame 1 respectively to support the pipe-blocking device 22. The pipe-blocking device 22 is arranged horizontally between the mounting seats 21, and a through movable hole is formed inside it. The push rod 3 can slide back and forth along the through hole. After the piercing machine completes the piercing, the push rod 3 drives the tube 100 forward. After the tube 100 is fully formed, the push rod 3 begins to retract. At this time, the end of the tube 100 is limited by the tube stopper 22. The push rod 3 moves backward in the movable hole 221 while the tube 100 remains stationary, preventing the tube 100 from being driven back. If the end of the tube 100 is irregular or slightly oblique, the tube stopper 22 can still provide effective support and guidance to prevent the tube 100 from tilting or being eccentric and entering the subsequent material feeding process. After the push rod 3 is completely withdrawn, the hook assembly 4 starts to operate, and the circulating material feeding hook 43 guides the tube 100 out. The whole process is continuous, stable and does not require manual intervention.

[0027] In one specific embodiment, such as Figure 1 and Figure 2 As shown, the tube stopper 22 is provided with a movable hole 221 for penetrating the capillary tube 100. The movable hole 221 guides and limits the push rod 3, so that the push rod 3 always runs coaxially during the piercing and retraction process, preventing uneven force on the capillary tube 100 or being carried into the tube stopper assembly 2 due to eccentricity.

[0028] After the perforation is completed, the push rod 3 begins to retract, and the capillary tube 100 remains stationary under the limiting action of the tube stopper 22. If there is deformation or skew at the end of the capillary tube 100, the movable hole 221 can provide support for the bottom of the capillary tube 100, so that the capillary tube 100 maintains the correct posture and position, thereby preventing the capillary tube 100 from being pulled into the tube stopper 22 by the push rod 3 and getting stuck.

[0029] In one embodiment, see Figure 1 , Figure 2 and Figure 3 As shown, a through-hole notch 222 is provided on one side of the upper part of the tube stopper 22. The through-hole notch 222 is a notch formed by cutting off one-quarter of the tube on the tube stopper 22. When the end of the perforated tube 100 is irregular or oblique due to plastic deformation, the through-hole notch 222 can provide clearance space for the end of the tube 100, so that the end of the tube 100 naturally fits into the lower edge area of ​​the notch, thereby preventing the tube 100 from being carried into the movable hole 221 of the tube stopper 22 during the retraction of the push rod 3. 2. The tube stopper 22 forms a tolerance space at the lower edge of the tube 100, where the tube 100 receives guidance support and limit correction. When the end of the tube 100 is oblique or irregular in shape, the lower edge of the tube 100 naturally falls into the tube notch 222 for support and limit, so that the tube 100 is kept in the correct position and is not driven into the tube stopper 22 by the push rod 3. After the push rod 3 is completely withdrawn, the tube hook assembly 4 is activated, and the circulating material hook 43 hooks the tube 100 out and introduces it into the next process, achieving smooth tube removal.

[0030] In one embodiment, see Figure 1 , Figure 2 and Figure 3 As shown, the depth H of the notch in the through-tube notch 222 along the axial direction of the movable hole 221 is 5-10 cm. The through-tube notch 222 is formed on one side of the upper part of the tube stopper 22 along the feeding direction of the tube 100. The depth H of the through-tube notch 222 is 5-10 cm, and the width is slightly larger than the lower edge dimension of the outer diameter of the tube 100. The through-tube notch 222 is formed by removing one-quarter of the thickness of the upper edge of the tube stopper 22. The transition area of ​​the groove adopts a rounded chamfer structure to avoid the end of the tube 100 being scratched when in contact. The tube stopper 22 has a movable hole 221 inside, and the push rod 3 can move forward and backward within the movable hole 221. In the piercing process, the push rod 3 pushes the tube 100 forward to form and then begins to retract. When the end of the tube 100 is at an angle, its lower edge enters the tube notch 222 for support and limitation. The tube 100 is kept outside the tube stopper 22 to avoid being carried into the hole by the push rod 3. After the push rod 3 is completely withdrawn, the hook tube assembly 4 guides the tube 100 to the next process through the material hook to realize automatic tube unloading.

[0031] In one embodiment, see Figure 1 , Figure 2 and Figure 3 As shown, the diameter of the movable hole 221 is 1.2-1.5 times the diameter of the push rod 3. The inner diameter of the movable hole 221 is slightly larger than the diameter of the push rod 3 to ensure that the push rod 3 can move back and forth along the movable hole 221 during reciprocating motion (the push rod 3 is driven by an external drive source, such as the push rod carriage or roller carriage of the push rod machine, which can drive the push rod 3 to move back and forth along the movable hole 221). The capillary tube 100 is sleeved on the outside of the push rod 3. After the piercing operation is completed, the push rod 3 retracts along the hole axis. The tube stopper 22 supports the capillary tube 100 through its hole edge to prevent the capillary tube 100 from sliding down due to inertia or vibration.

[0032] In one embodiment, see Figure 1 , Figure 2 and Figure 3 As shown, a pipe stopper 22 is threaded between the mounting bases 21. By installing the pipe stopper 22 between the two mounting bases 21 using a threaded connection, the pipe stopper 22 can be easily disassembled and replaced.

[0033] In one embodiment, see Figure 1 , Figure 2 and Figure 4As shown, the hook tube assembly 4 includes a support base 41, on which a rotating shaft 42 is rotatably connected. Several circulating material-pulling hooks 43 are fixedly connected to the rotating shaft 42. The circulating material-pulling hooks 43 are used to pry the capillary tube 100 that is limited by the tube stopper 22. The support base 41 is fixedly installed below the frame 1, and the rotating shaft 42 is rotatably connected to it through bearings. Several circulating material-pulling hooks 43 are evenly fixed on the outer circumference of the rotating shaft 42, which can hook the tail of the capillary tube 100. When the push rod 3 completes the push and exits the tube stopper 22, the capillary tube 100 is in a limited state. The rotating shaft 42 drives the circulating material-pulling hooks 43 to rotate in a predetermined direction. The hook claws 44 hook the capillary tube 100 one by one, smoothly pulling the capillary tube 100 out of the position of the tube stopper 22 and into the conveying channel of the next process.

[0034] In one embodiment, see Figure 1 , Figure 2 and Figure 4 As shown, each of the several circulating material feeding hooks 43 is equipped with a claw 44 in front. The claw 44 contacts the tube 100 to achieve the feeding and output. The claw 44 has an arc-shaped structure and its opening size is slightly larger than the outer diameter of the tube 100 so that it can reliably hook the tube 100 during the rotational movement and prevent it from falling off. After the push rod 3 completes the perforation and exits the tube stopper 22, the rotating shaft 42 drives the circulating material feeding hooks 43 to rotate. The claws 44 contact the tube 100 in sequence. With the help of the rotational movement, the tube 100 is output from the limiting position of the tube stopper 22. The contact position between the claw 44 and the tube 100 can be accurately positioned by adjusting the phase of the rotating shaft 42 and the length of the claw 44 to ensure that the tube 100 is conveyed smoothly and continuously under high-rhythm production conditions, while reducing the risk of collision or damage to the tube 100.

[0035] In one embodiment, see Figure 1 , Figure 2 and Figure 4 As shown, the tube stopper 22 and the circulating material-pulling hook 43 of the hook tube assembly 4 are located in the same longitudinal plane. The tube stopper 22 is fixedly installed on the frame 1, and the hook tube assembly 4 is installed below the frame 1. The position of its rotating shaft 42 and the circulating material-pulling hook 43 is adjusted so that the hook claw 44 and the limiting position of the tube stopper 22 are in the same longitudinal plane. After the tube 100 is pushed out by the push rod 3, its end is close to the tube stopper 22 and is guided and limited by the tube stopper 22. Then the circulating material-pulling hook 43 rotates along the same longitudinal plane to contact the tube 100, and the tube 100 is smoothly pulled out by the hook claw 44.

[0036] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. A pipe-stopping mechanism for piercing seamless steel pipes, comprising a frame (1), characterized in that, A baffle assembly (2) is provided on the frame (1), and a top rod (3) is inserted inside the baffle assembly (2). The top rod (3) is used to pass through the capillary tube (100). The capillary tube (100) is blocked by the baffle assembly (2) to pull out the top rod (3). A hook assembly (4) is provided below the frame (1).

2. The seamless steel pipe piercing and blocking mechanism according to claim 1, characterized in that, The pipe baffle assembly (2) includes two mounting seats (21), which are mounted on the frame (1). A pipe baffle (22) is provided between the two mounting seats (21), and a top rod (3) is movably connected inside the pipe baffle (22).

3. The seamless steel pipe piercing and blocking mechanism according to claim 2, characterized in that, The tube stopper (22) is provided with an movable hole (221) for penetrating the capillary tube (100).

4. The seamless steel pipe piercing and blocking mechanism according to claim 2, characterized in that, The pipe stopper (22) is provided with a pipe notch (222) on one side of its upper part. The pipe notch (222) is a notch formed by cutting off one-quarter of the pipe on the pipe stopper (22).

5. A pipe-stopping mechanism for piercing seamless steel pipes according to claim 4, characterized in that, The depth H of the notch in the through-hole notch (222) along the axial direction of the movable hole (221) is 5-10cm.

6. A pipe-stopping mechanism for piercing seamless steel pipes according to claim 3, characterized in that, The diameter of the movable hole (221) is 1.2-1.5 times the diameter of the top rod (3).

7. A pipe-stopping mechanism for piercing seamless steel pipes according to claim 2, characterized in that, A tube stopper (22) is threaded between the two mounting bases (21).

8. A pipe-stopping mechanism for piercing seamless steel pipes according to claim 1, characterized in that, The hook tube assembly (4) includes a support base (41), on which a rotating shaft (42) is rotatably connected. Several circulating material-pulling hooks (43) are fixedly connected to the rotating shaft (42). The several circulating material-pulling hooks (43) are used to poke the capillary tube (100) that is limited by the tube stopper (22).

9. A tube-stopping mechanism for piercing seamless steel pipes according to claim 8, characterized in that, Each of the circulating material feeding hooks (43) is provided with a claw (44) in front of it. The claw (44) contacts the tail of the capillary tube (100) to achieve feeding and output.

10. A pipe-stopping mechanism for piercing seamless steel pipes according to claim 9, characterized in that, The tube stopper (22) and the circulating material hook (43) of the hook tube assembly (4) are located in the same longitudinal plane.

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