Perforating machine for producing steel pipes

Abstract

The utility model relates to a puncher for producing steel pipes, which comprises an inlet table, a main engine base, a first outlet table section and a second outlet table section, the inlet table is connected to the inlet end of the main engine base, the first outlet table section is connected with the second outlet table section, and the first outlet table section is connected to the outlet end of the main engine base. A deformation space for rolling a pipe blank is arranged in the main machine base, and the center point of the deformation space is an equipment rolling center line. The perforating machine has the beneficial effects that each device of the perforating machine is provided with an alignment mechanism for processing and mounting references; the symmetrical mechanism on each device can make the center lines of the inlet table, the main machine base and the outlet table coincide with the rolling center line of the device and make the datum line where the three-roller holding core on the outlet table is located coincide with the rolling center line of the device, a datum is reserved for installation of each device, installation is convenient, and the production efficiency is improved. Therefore, the design and installation precision of equipment is improved, the yield of pipes can be greatly improved, and a good foundation is laid for production of high-quality steel pipes.

Description

Technical Field

[0001] The utility model relates to the technical field of steel pipe production equipment, in particular to a punching machine for producing steel pipes. Background Art

[0002] Seamless steel pipes are widely used in machinery, construction, coal, oil and gas, and power industries. The production of seamless steel pipes uses a puncher, which is the most important process in the production of seamless steel pipes and the first process of metal deformation. Pipe billet perforation is one of the important processes in the production of seamless steel pipes. This process is to pierce and roll the solid pipe billet into a hollow rough pipe through the puncher, which is the first process of metal deformation. Among them, the puncher includes equipment such as the entrance table, the puncher main base, the exit table first section, and the exit table second section connected in sequence. The specific perforation process is: after the heated pipe billet enters the entrance table billet base, the entrance table pusher pushes the pipe billet into the puncher main base, the puncher roller device rotates to bite the pipe billet, and the pipe billet rotates to the position to be perforated through the roller device on the puncher main base. Before this, the ejector trolley of the exit table second section has driven the ejector and ejector to run to the working position, ready for rolling and perforation. In other words, the adjacent equipment of the puncher is mutually connected and works together to complete the perforation.

[0003] However, the existing perforating machines are manufactured separately and transported to the site for on-site installation. Since the connections between the existing equipment are all installed manually, and the longitudinal axes of adjacent equipment are not on the same horizontal line during installation, that is, the installation accuracy of the equipment is low, which leads to deviations in the tube billet during transportation, and then leads to low precision and low yield of the produced steel pipes. Therefore, the equipment needs to be adjusted repeatedly manually, resulting in high failure rate and low production capacity. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a punching machine for producing steel pipes, which solves the problem that the installation accuracy of the equipment is low, resulting in deviations in the tube blanks during transportation, and further resulting in low precision and low yield of the produced steel pipes. Manual adjustments are required repeatedly between the equipment, resulting in high failure rate and low production capacity.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0008] The utility model provides a perforator for producing steel pipes, comprising an inlet platform, a main machine base, an outlet platform section 1 and an outlet platform section 2, wherein the inlet platform is connected to the inlet end of the main machine base, the outlet platform section 1 is connected to the outlet platform section 2 and the outlet platform section 1 is connected to the outlet end of the main machine base;

[0009] A deformation space for rolling tube blanks is provided in the main engine seat, and the center point of the deformation space is the equipment rolling center line;

[0010] Alignment mechanisms are arranged between the entrance platform and the entrance end of the main machine base, between the first section of the exit platform and the exit end of the main machine base, and between the first section of the exit platform and the second section of the exit platform. The multiple alignment mechanisms can make the center lines of the entrance platform, the main machine base and the second section of the exit platform coincide with the rolling center line of the equipment, and can also make the reference line of the three-roll core on the first section of the exit platform coincide with the rolling center line of the equipment.

[0011] The embodiment of the utility model proposes a punching machine for producing steel pipes, and the punching machine is designed with an alignment mechanism for processing and installation references on each device. And the symmetrical mechanism on each device can make the center lines of the entrance platform, the main base and the two sections of the exit platform coincide with the rolling center line of the equipment, and can also make the reference line where the three-roller core on the first section of the exit platform is located coincide with the rolling center line of the equipment. In other words, an alignment mechanism is set before the production of each device to improve the processing accuracy of the equipment and simplify the installation of the equipment. Compared with the prior art, a reference is reserved for the installation of each piece of equipment, which is convenient for installation, thereby improving the design and installation accuracy of the equipment, which can greatly improve the yield rate of pipes and lay a good foundation for the production of high-quality steel pipes.

[0012] Optionally, the main frame includes a frame, a plurality of rollers arranged in the frame, and a main transmission member driving the rollers to rotate, and the main transmission member is arranged outside the frame and located on one side of the entrance platform, and the main transmission member can provide power for the plurality of rollers;

[0013] The axes of the plurality of rolling rollers are parallel to each other and coincide with and are parallel to the rolling center line of the equipment, the deformation space is formed between the plurality of rolling rollers and the rolling rollers are capable of rolling the tube blank;

[0014] An upper cover centerline positioning groove is arranged at the inner top of the frame, and a lower cover centerline positioning groove is arranged at the inner bottom of the frame, and the upper cover centerline positioning groove and the lower cover centerline positioning groove are arranged correspondingly in the same vertical direction, and the lower cover centerline positioning groove coincides with the rolling centerline of the equipment.

[0015] Optionally, two first roller mounting positioning columns and two second roller mounting positioning columns are respectively provided at the opposite ends of the inner side of the frame, each of the first roller mounting positioning columns and the two second roller mounting positioning columns are arranged in a one-to-one correspondence, and a roller positioning reference surface is provided on the roller.

[0016] Optionally, the outlet platform section includes a base, the three-roller core disposed on the base, and a driving member for driving the three-roller core, and the driving member is disposed on one side of the base;

[0017] A reference line front positioning groove and a reference line rear positioning groove are respectively arranged at two axial ends of the base, and both the reference line front positioning groove and the reference line rear positioning groove coincide with the rolling center line of the equipment.

[0018] Optionally, the second section of the exit platform includes a locking base arranged near the first section of the exit platform, and also includes a transmission base and a track seat arranged between the transmission base and the locking base, and the transmission base and the locking base are both paved with the track seat;

[0019] The locking base and the transmission base are provided with base centerline positioning grooves at both front and rear ends of the transverse center, and the axes of the base centerline positioning grooves of the locking base and the transmission base coincide with the rolling centerline of the equipment;

[0020] A push rod trolley is arranged on the track seat, and the push rod trolley can slide along the longitudinal direction of the transmission base, the track seat and the locking base.

[0021] Optionally, the second section of the exit platform also includes a guide rail which is arranged on one side of the transmission base and drives the push rod trolley to move along the transmission base, the track base and the locking base.

[0022] Optionally, push rod positioning grooves are arranged on the left and right sides of the push rod trolley;

[0023] A position positioning reference groove is arranged in the longitudinal direction of the locking base.

[0024] Optionally, the inlet station includes an inlet station body and an inlet station pusher;

[0025] The inlet platform body has an inlet port, which is arranged along the longitudinal direction of the inlet platform body. The inlet platform pusher can push the tube blank into the main base of the punching machine.

[0026] (III) Beneficial effects

[0027] The beneficial effect of the utility model is as follows: the utility model is a punching machine for producing steel pipes, and the punching machine is designed with an alignment mechanism for processing and installation references on each device. And the symmetrical mechanism on each device can make the center lines of the entrance platform, the main machine base and the two sections of the exit platform coincide with the rolling center line of the equipment, and can also make the reference line where the three-roller core on the first section of the exit platform is located coincide with the rolling center line of the equipment, that is, before the production of each device, an alignment mechanism is set up to improve the processing accuracy of the equipment and simplify the installation of the equipment. Compared with the prior art, a reference is reserved for the installation of each piece of equipment, which is convenient for installation, thereby improving the design and installation accuracy of the equipment, which can greatly improve the yield rate of pipes and lay a good foundation for the production of high-quality steel pipes. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A top view of a punching machine for producing steel pipes according to the utility model;

[0029] Figure 2 for Figure 1 A schematic cross-sectional view of the middle mainframe;

[0030] Figure 3 for Figure 2 A view of the middle frame (21) (without rollers installed);

[0031] Figure 4 for Figure 1 A section of the base of the exit platform;

[0032] Figure 5 for Figure 1 The schematic diagram of the structure of the second section of the exit platform (showing the ejector trolley);

[0033] Figure 6 for Figure 1 Schematic diagram of the structure of the locking base of the second section of the middle exit platform (for showing the ejector trolley);

[0034] Figure 7 for Figure 5 Schematic diagram of the structure of the middle push rod trolley.

[0035] [Description of Reference Numerals]

[0036] 1: Entrance platform; 11: Entrance platform main body;

[0037] 2: main machine base; 21: frame; 211: upper cover centerline positioning groove; 212: lower cover centerline positioning groove; 213: first roller installation positioning column; 214: second roller installation positioning column; 22: roller; 221: roller positioning reference surface; 23: main transmission member;

[0038] 3: Section 1 of the exit platform; 31: Base; 311: Positioning groove in front of the reference line; 312: Positioning groove in the back of the reference line;

[0039] 4: Second section of the exit platform; 41: Locking base; 411: Positioning reference groove; 42: Transmission base; 43: Track base; 44: Ejector trolley; 441: Ejector positioning groove; 45: Base centerline positioning groove. DETAILED DESCRIPTION

[0040] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below in conjunction with the accompanying drawings through specific implementation methods. Figure 1 The orientation of Figure 1 The direction perpendicular to the inside is defined as "down", Figure 1 The direction in which the middle entrance platform 1 is located relative to the main base 2 is defined as "left". The left-right direction is defined as "longitudinal direction", and the front-back direction is defined as "lateral direction".

[0041] The embodiment of the utility model proposes a punching machine for producing steel pipes, and the punching machine is designed with an alignment mechanism for processing and installation references on each device. And the symmetrical mechanism on each device can make the center lines of the entrance table 1, the main base 2 and the second section 4 of the exit table coincide with the rolling center line of the equipment, and can also make the reference line h where the three-roller core on the first section 3 of the exit table is located coincide with the rolling center line of the equipment. That is to say, an alignment mechanism is set before the production of each device to improve the processing accuracy of the equipment and simplify the installation of the equipment. Compared with the prior art, a reference is reserved for the installation of each piece of equipment, which is convenient for installation, thereby improving the design and installation accuracy of the equipment, which can greatly improve the yield rate of pipes and lay a good foundation for the production of high-quality steel pipes.

[0042] In order to better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0043] Example:

[0044] Reference Figure 1-Figure 7As shown, a piercing machine for producing steel pipes includes an inlet table 1, a main machine base 2, an outlet table section 1 3 and an outlet table section 2 4, wherein the inlet table 1 is connected to the inlet end of the main machine base 2, the outlet table section 1 3 is connected to the outlet table section 2 4, and the outlet table section 1 3 is connected to the outlet end of the main machine base 2. A deformation space for rolling a pipe blank is provided in the main machine base 2, and the center point of the deformation space is the equipment rolling center line. Alignment mechanisms are provided between the inlet table 1 and the inlet end of the main machine base 2, between the outlet table section 1 3 and the outlet end of the main machine base 2, and between the outlet table section 1 3 and the outlet table section 2 4. The multiple alignment mechanisms can make the center lines of the inlet table 1, the main machine base 2 and the outlet table section 2 4 coincide with the equipment rolling center line, and can also make the reference line h where the three-roller core on the outlet table section 1 3 is located coincide with the equipment rolling center line.

[0045] Furthermore, the inlet platform 1 comprises an inlet platform body 11 and a feed platform pusher. The inlet platform body 11 has a feed port, which is arranged along the longitudinal direction of the inlet platform body 11, and the feed platform pusher can push the tube blank into the main frame 2 of the punching machine.

[0046] Furthermore, the main frame 2 includes a frame 21, a plurality of rollers 22 arranged in the frame 21, and a main transmission member 23 for driving the rollers 22 to rotate, and the main transmission member 23 is arranged outside the frame 21 and located on one side of the inlet platform 1, and the main transmission member 23 can provide power for the plurality of rollers 22. The axes of the plurality of rollers 22 are parallel to each other and coincide with the rolling center line of the equipment, and a deformation space is formed between the plurality of rollers 22, and the rollers 22 can roll the tube blank. An upper cover center line positioning groove 211 is arranged at the inner top of the frame 21, and a lower cover center line positioning groove 212 is arranged at the inner bottom of the frame 21, and the upper cover center line positioning groove 211 and the lower cover center line positioning groove 212 are correspondingly arranged in the same vertical direction, and the lower cover center line positioning groove 212 coincides with the rolling center line of the equipment. Here, the upper cover center line positioning groove 211 and the lower cover center line positioning groove 212 are both one of the alignment mechanisms.

[0047] It should be noted that the upper cover centerline positioning groove 211 of the frame 21 and the assembly lower cover centerline positioning groove 212 of the frame 21 are used to determine the equipment rolling centerline before the equipment is installed. Based on this, the frame assembly lower frame centerline reference 212 is aligned with the equipment rolling centerline to determine the position of the frame assembly lower frame.

[0048] It should be noted that: during the processing of the mainframe 2, the frame 21, and the upper cover of the frame 21, the dimensions in the Y-axis direction (lateral direction) are processed with the X-axis direction (longitudinal direction) as the reference axis, and an upper cover centerline positioning groove 211 is processed at each of the two ends (left and right ends) of the frame 21 in the X-axis direction. It should be noted that there are two upper cover centerline positioning grooves 211. The purpose is to perform positioning in both the left and right lateral directions to further improve the installation accuracy.

[0049] The same as the above main frame 2: frame 21, during the processing of the lower frame of the frame 21, the dimensions in the Y-axis direction (transverse direction) are processed with the X-axis direction (longitudinal direction) as the reference axis, and a lower cover centerline positioning groove 212 is processed at each of the two ends (left and right ends) in the X-axis direction of the frame. It should be noted that there are two upper cover centerline positioning grooves 211.

[0050] Furthermore, two first roller installation positioning columns 213 and two second roller installation positioning columns 214 are respectively arranged at opposite ends of the inner side of the frame 21, and each first roller installation positioning column 213 and two second roller installation positioning columns 214 are arranged one by one, and a roller positioning reference surface 221 is arranged on the roller 22. The main frame 2: frame 21, the lower frame of the frame 21 is processed during the processing, and four reference surfaces are processed at the positioning columns 214 on both sides of the lower frame with the X-axis of the lower frame as the symmetric center axis, wherein the two reference surfaces on the left side are the left roller installation reference surfaces, and the two reference surfaces on the right side are the right roller installation reference surfaces. When processing the high and low axis roller boxes, the roller 22 is processed with two assembly reference surfaces 221 at the same distance from the center point of the roller. The frame is equipped with a left roller installation reference 213, and the frame is equipped with a right roller installation reference 214; when calibrating the equipment, the left and right roller installation references are brought close to the frame assembly left and right roller installation references, and the distance between the two reference surfaces is measured to determine the distance between the roller and the rolling center line, so as to complete the calibration, so as to make the distance between the roller and the rolling center line more accurate, thereby facilitating the unification of the equipment rolling center line. The reference surface where the second roller installation positioning column 214 is located is also a kind of alignment mechanism.

[0051] Further, the first section 3 of the exit platform includes a base 31, a three-roller core-embracing device arranged on the base 31, and a driving member for driving the three-roller core-embracing device, and the driving member is arranged on one side of the base 31. The base 31 is provided with a reference line front positioning groove 311 and a reference line rear positioning groove 312 at both axial ends, and the reference line front positioning groove 311 and the reference line rear positioning groove 312 both coincide with the equipment rolling center line. The reference line front positioning groove 311 and the reference line rear positioning groove 312 are also a kind of alignment mechanism. It should also be noted that the reference line of the first section 3 of the exit platform coincides with the equipment rolling center line of the X axis, but it is not the center line. Here, the reference line of the base 31 is the center line where the three-roller core-embracing device is located, and the center line where the three-roller core-embracing device is located is not in the same vertical plane as the center line of the base 31 for the purpose of facilitating material discharge. Therefore, here, it is sufficient to ensure that the center line where the three-roller core-embracing device is located, that is, the reference line, is neutralized with the equipment rolling center line.

[0052] Furthermore, the second section of the exit platform 4 includes a locking base 41 disposed near the first section of the exit platform 3, a transmission base 42, and a track base 43 disposed between the transmission base 42 and the locking base 41, and the transmission base 42 and the locking base 41 are both provided with the track base 43. The front and rear ends of the transverse center of the locking base 41 and the transmission base 42 are both provided with a base centerline positioning groove 45, and the axes of the base centerline positioning grooves 45 of the locking base 41 and the transmission base 42 are both coincident with the rolling centerline of the equipment. A push rod trolley 44 is provided on the track base 43, and the push rod trolley 44 can slide along the longitudinal direction of the transmission base 42, the track base 43 and the locking base 41.

[0053] Here, the push rod positioning groove 441 can make the front and rear reference of the center line of the locking base 41 coincide with the rolling center line of the equipment to determine the position of the locking base 41. The locking base 41 and the transmission base 42 of the second section of the exit platform are both provided with a base center line positioning groove 45 at both ends in the longitudinal direction. The front and rear reference of the center line of the locking base 41 and the transmission base 42 can be coincided with the rolling center line of the equipment to determine the position of the locking base 41 and the transmission base 42. Then, the push rod trolley 44 is installed between the locking base 41 and the transmission base 42. In this way, the position of the second section 4 of the exit platform is determined.

[0054] Furthermore, the second section of the exit platform 4 also includes a guide rail disposed on one side of the transmission base 42 and driving a push rod trolley 44 to move along the transmission base 42 , the track base 43 and the locking base 41 .

[0055] Further, the left and right sides of the push rod trolley 44 are oppositely provided with push rod positioning grooves 441. The longitudinal direction of the locking base 41 is provided with a position positioning reference groove 411. The base centerline positioning groove 45 and the push rod positioning groove 441 are a kind of alignment mechanism.

[0056] It should be noted that the push rod trolley 44 adds a push rod positioning groove 441. In other words, the length of the punching machine push rod is determined, and the base centerline positioning groove 45 of the locking base 41 of the second section 4 of the exit platform is aligned with the push rod positioning groove 441 of the push rod trolley 44 of the second section 4 of the exit platform to determine the relationship between the punching machine head and the center position of the punching machine, so as to complete the calibration of the head position.

[0057] In the description of the present utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0058] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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 a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0059] In the present utility model, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0060] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0061] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A perforating machine for producing steel pipes, comprising an inlet platform (1), a main machine base (2), an outlet platform section 1 (3) and an outlet platform section 2 (4), characterized in that: The inlet platform (1) is connected to the inlet end of the main engine base (2), the outlet platform section 1 (3) is connected to the outlet platform section 2 (4), and the outlet platform section 1 (3) is connected to the outlet end of the main engine base (2); A deformation space for rolling a tube blank is provided in the main engine seat (2), and the center point of the deformation space is the rolling center line of the equipment; Alignment mechanisms are provided between the entry platform (1) and the entry end of the main machine base (2), between the first section of the exit platform (3) and the exit end of the main machine base (2), and between the first section of the exit platform (3) and the second section of the exit platform (4). The plurality of alignment mechanisms can make the center lines of the entry platform (1), the main machine base (2) and the second section of the exit platform (4) coincide with the rolling center line of the equipment, and can also make the reference line of the three-roller core on the first section of the exit platform (3) coincide with the rolling center line of the equipment.

2. The piercing machine for producing steel pipes according to claim 1, characterized in that: The main machine base (2) comprises a frame (21), a plurality of rollers (22) arranged in the frame (21), and a main transmission member (23) for driving the rollers (22) to rotate, and the main transmission member (23) is arranged outside the frame (21) and located on one side of the entrance platform (1), and the main transmission member (23) can provide power for the plurality of rollers (22); The axes of the plurality of rolling rollers (22) are parallel to each other and coincide with and are parallel to the rolling center line of the equipment; the deformation space is formed between the plurality of rolling rollers (22) and the rolling rollers (22) are capable of rolling the tube blank; An upper cover centerline positioning groove (211) is provided at the inner top of the frame (21), and a lower cover centerline positioning groove (212) is provided at the inner bottom of the frame (21), and the upper cover centerline positioning groove (211) and the lower cover centerline positioning groove (212) are correspondingly arranged in the same vertical direction, and the lower cover centerline positioning groove (212) coincides with the rolling centerline of the equipment.

3. The piercing machine for producing steel pipes according to claim 2, characterized in that: Two first roller installation positioning columns (213) and two second roller installation positioning columns (214) are respectively arranged at opposite ends of the inner side of the frame (21), each of the first roller installation positioning columns (213) and the two second roller installation positioning columns (214) are arranged in one-to-one correspondence, and a roller positioning reference surface (221) is arranged on the roller (22).

4. The piercing machine for producing steel pipes according to claim 1, characterized in that: The outlet platform section (3) comprises a base (31), the three-roller core arranged on the base (31), and a driving member for driving the three-roller core, and the driving member is arranged on one side of the base (31); A front datum line positioning groove (311) and a rear datum line positioning groove (312) are respectively provided at two axial ends of the base (31), and both the front datum line positioning groove (311) and the rear datum line positioning groove (312) coincide with the rolling center line of the equipment.

5. The piercing machine for producing steel pipes according to claim 1, characterized in that: The second section of the exit platform (4) comprises a locking base (41) arranged near the first section of the exit platform (3), and also comprises a transmission base (42) and a track base (43) arranged between the transmission base (42) and the locking base (41), and the transmission base (42) and the locking base (41) are both paved with the track base (43); Base centerline positioning grooves (45) are provided at both front and rear ends of the transverse center of the locking base (41) and the transmission base (42), and the axes of the base centerline positioning grooves (45) of the locking base (41) and the transmission base (42) coincide with the rolling centerline of the equipment; A push rod trolley (44) is arranged on the track seat (43), and the push rod trolley (44) can slide along the longitudinal direction of the transmission base (42), the track seat (43) and the locking base (41).

6. The piercing machine for producing steel pipes according to claim 5, characterized in that: The second section (4) of the exit platform also includes a guide rail which is arranged on one side of the transmission base (42) and drives the push rod trolley (44) to move along the transmission base (42), the track base (43) and the locking base (41).

7. The piercing machine for producing steel pipes according to claim 5, characterized in that: The left and right sides of the push rod trolley (44) are oppositely provided with push rod positioning grooves (441); The locking base (41) is provided with a position positioning reference groove (411) in the longitudinal direction.

8. The piercing machine for producing steel pipes according to claim 5, characterized in that: The inlet platform (1) comprises an inlet platform body (11) and an inlet platform pusher; The inlet platform body (11) has an inlet port, which is arranged along the longitudinal direction of the inlet platform body (11). The inlet platform pusher can push the tube blank into the main base (2) of the punching machine.

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