Automatic T-shaped hole drawing equipment for metal pipe

Abstract

The invention discloses automatic metal pipe T-shaped hole drawing equipment which comprises a punching mechanism, the punching mechanism comprises a punching rod, the punching rod is provided with a flat end used for puncturing a metal pipe, and the punching rod is fixedly connected with a punching sleeve used for reaming; and the hole pulling mechanism comprises a hole pulling piece, the hole pulling piece is provided with a hole expanding cambered surface, and a connecting groove used for being connected with the flat end is formed in the hole pulling piece, so that the punching mechanism can drive the hole pulling mechanism to pull a hole. According to the automatic T-shaped hole pulling equipment for the metal pipe, after the punching mechanism punches the hole, the hole pulling mechanism can be rotated and locked, so that the punching mechanism drags the hole pulling mechanism to pull the hole upwards, punching and hole pulling can be completed at a time, and compared with the prior art, the position of the metal pipe does not need to be adjusted and repositioning does not need to be conducted; the time consumed by trepanning and hole drawing treatment is shortened, and the overall efficiency of T-shaped hole drawing of the metal pipe is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of metal pipe hole drawing, and in particular relates to automatic metal pipe T-shaped hole drawing equipment. Background Art

[0002] In the field of metal pipe processing, T-joints are widely used to connect with other pipelines to achieve fluid diversion. Compared with traditional welded tees, the branch pipe connection structure formed by drawing holes is more compact, significantly reducing the fluid retention area, thereby improving the overall performance and efficiency of the system.

[0003] In the process of drilling holes in metal pipes, the hole position must be accurately determined first. Then, an elliptical or circular hole is opened on the metal pipe. To ensure stability during the processing, a three-claw positioning mechanism is used to fix the metal pipe. Next, the edge of the hole is turned outward by a hole-drawing hook or a special mold to form a flange that protrudes out of the pipe, thus completing the preliminary processing of the T-joint.

[0004] However, the traditional processing process has many inconveniences. After the hole-making operation is completed, the metal tube needs to be unpositioned first, and then moved to the hole-pulling equipment for reinstallation and positioning. In this process, the removal and reinstallation of the metal tube are cumbersome, and the hole-pulling process takes a long time because of the need for multiple positioning.

[0005] To solve this problem, existing equipment attempts to integrate the hole-making and hole-pulling mechanisms in the same device. This design can complete the hole-making and hole-pulling operations in sequence without disassembling the metal tube, thereby improving the processing efficiency to a certain extent. However, this device still has some defects in actual use.

[0006] Specifically, before drilling, the fixed metal tube still needs to be accurately delivered to the drilling position by a feeding mechanism for positioning. After drilling, the drilling area needs to be moved to the location of the hole extraction mechanism by the feeding mechanism and repositioned. During this process, the equipment needs to spend a certain amount of time to reposition before drilling, which affects the overall efficiency of the T-type hole extraction of the metal tube. Summary of the invention

[0007] In view of the deficiencies in the prior art, the present invention aims to provide an automatic metal pipe T-hole drawing device.

[0008] In order to achieve the above-mentioned invention object, the technical solution adopted by the present invention includes: A punching mechanism, the punching mechanism comprising a punching rod having a flat end for puncturing the metal tube, and a punching sleeve for expanding the hole being fastened to the punching rod; In the present invention, punching sleeves of different sizes can be replaced according to the requirements for punching diameters, so that the automatic metal pipe T-shaped hole-pulling device can adapt to different punching requirements.

[0009] A hole-pulling mechanism, the hole-pulling mechanism comprising a hole-pulling member, the hole-pulling member having a hole-expanding arc surface, a connecting groove for connecting with the flat end being provided in the hole-pulling member, so that the punching mechanism can drive the hole-pulling mechanism to pull the hole; In the present invention, the punching mechanism is inserted into the connecting groove of the hole pulling mechanism and rotated and locked, so that after the punching mechanism is completed, the shoelace hole pulling mechanism can move upward, thereby allowing the hole pulling mechanism to pull out the hole punched by the metal tube.

[0010] In the present invention, when the punching mechanism carries the hole-pulling member to move, the hole is pulled out by the relative squeezing of the hole-expanding arc surface and the side wall of the metal tube. By adjusting the moving position height of the hole-pulling member through the punching mechanism, the amount of the inclined hole-expanding arc surface extending to the outside of the metal tube can be adjusted. In this way, the diameter of the hole to be pulled out can be adjusted and controlled.

[0011] The heating mechanism has a heating plate for heating the arc surface of the hole expansion, and when the hole extraction mechanism is in a working state, the heating mechanism stops heating.

[0012] In the present invention, the gravity of the hole-pulling member itself is used as a basis for judging whether the hole-expanding arc surface needs to be heated. Specifically, when the hole-pulling member acts stably on the metal tube due to gravity, if it is necessary to further ensure the smooth progress of the hole-pulling process and the quality of the metal tube after processing, the hole-expanding arc surface is heated. The role of this heating step is that it can effectively promote the release of the deformation stress inside the metal tube during hole-pulling, thereby significantly reducing the risk of deformation or cracks in the metal tube after processing.

[0013] By precisely controlling the heating temperature and time, the heating treatment in the present invention not only optimizes the mechanical properties during the hole extraction process, but also ensures the dimensional stability and structural integrity of the metal tube after processing. This gravity-controlled heating treatment strategy not only improves processing efficiency, but also significantly enhances the processing quality and reliability of the metal tube.

[0014] Preferably, the hole-pulling mechanism further comprises a support rod for positioning the metal pipe sleeve, the support rod having an accommodation space for accommodating the hole-pulling member, and the hole-pulling member can only move vertically in the accommodation space.

[0015] Preferably, the connecting groove comprises an insertion groove and a rotation opening, and the flat end can rotate in the rotation opening.

[0016] In the present invention, after the flat end of the punching rod completes the punching, it will continue to move vertically downward and enter the insertion slot, and the end of the punching rod cannot rotate in the insertion slot due to the limitation of its internal space. When the flat end enters the rotating mouth, the space inside the rotating mouth can support the rotation of the flat end. After the punching rod drives the flat end to rotate, the side of the flat end close to the rotating mouth will abut against the inner wall of the rotating mouth. When the punching rod moves vertically upward, the hole-pulling piece will move upward with the flat end.

[0017] Preferably, a lifting ring is integrally formed on the top of the hole-pulling member.

[0018] In the present invention, the lifting ring is used to lift the hole punched by the punching mechanism to a state of tilting toward the outside of the metal tube, so as to facilitate the subsequent hole pulling of the expanded arc surface.

[0019] Preferably, the punching sleeve comprises two sleeve plates, one of which is internally threaded with bolts, and the two sleeve plates are fastened to the punching rod by bolts.

[0020] Preferably, at least one positioning column is fixedly connected to the sleeve plate, and a plurality of positioning holes matched with the positioning column are formed on the punching rod.

[0021] Preferably, the heating mechanism further comprises a follower, and when the hole-pulling member is pressed on the follower, the heating plate is attached to the hole-expanding arc surface by its own weight.

[0022] Preferably, at least one raised strip is provided in the accommodating space, and grooves matching the number of raised strips are provided in the hole-pulling member.

[0023] Compared with the prior art, the advantages of the present invention include: (1) The automatic metal pipe T-shaped hole punching equipment provided by the present invention has a simple structure, can automatically punch holes, and is easy to maintain; (2) The present invention provides an automatic metal tube T-hole pulling device. After the punching mechanism punches the hole, the hole pulling mechanism can be rotated and locked, so that the punching mechanism pulls the hole pulling mechanism upward to pull the hole, so that the punching and hole pulling can be completed at one time. Compared with the prior art, there is no need to adjust the position of the metal tube and reposition it, which reduces the time consumed by the hole opening and hole pulling process, and improves the overall efficiency of the metal tube T-hole pulling; (3) The present invention provides an automatic metal tube T-hole extraction device. The punching mechanism punching sleeve can be replaced to meet the needs of opening holes of different sizes, and the length of the expanded arc surface extending out of the metal tube can be adjusted to be suitable for the processing of holes of different calibers. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is an overall schematic diagram of an automatic metal pipe T-shaped hole pulling device in the present invention; Figure 2 It is a schematic diagram of the connection structure of the three-claw positioning mechanism in the present invention; Figure 3 It is a schematic diagram of the connection structure of the punching rod in the present invention; Figure 4 It is a schematic diagram of the connection structure of the sleeve plate in the present invention; Figure 5 It is a schematic diagram of the connection structure of the hole extraction member in the present invention; Figure 6 It is a schematic diagram of the connection structure of the heating mechanism in the present invention.

[0026] Reference numerals: 1. Punching mechanism; 11. Sliding frame; 12. Mounting frame; 13. Cylinder; 14. Working frame; 15. Servo motor; 16. Punching rod; 17. Electric telescopic rod; 18. Speed ​​regulating motor; 19. Grinding tool; 110. Sleeve plate; 111. Flat end; 112. Positioning column; 113. Bolt; 114. Elastic plate; 2. Pulling mechanism; 21. Support rod; 22. Pulling piece; 23. Three-claw positioning mechanism; 24. Moving frame; 25. Insertion slot; 26. Rotating mouth; 27. Lifting ring; 28. Raised strip; 29. ​​Hole expansion arc surface; 3. Slide rail; 4. Heating mechanism; 41. Heating plate; 42. Auxiliary pulley; 43. Traction rope; 44. Touch plate; 45. Spring. DETAILED DESCRIPTION

[0027] In view of the deficiencies in the prior art, the inventor of this case has proposed the technical solution of the present invention after long-term research and extensive practice. The following will further explain the technical solution, its implementation process and principle, etc. in conjunction with the drawings in the embodiments of this application and specific implementation cases.

[0028] It should be noted that the embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention. The described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, the present invention covers any substitution, modification, equivalent method and scheme made on the spirit, principle and scope of the present invention defined by the claims. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] In the description of the present application, "first", "second", "third" and similar words do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, "one" or "an" and other similar words do not indicate a quantity limitation, but indicate the existence of at least one. "Include" or "comprise" and other similar words mean that the elements or objects appearing before "include" or "comprises" include the elements or objects listed after "include" or "comprises" and their equivalents, and do not exclude other elements or objects. "Connect" or "connected" and other similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0030] In the description of the present application, the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying 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 application. In addition, when positional terms such as both sides, outside, up and down are used, it should be understood that they are only used to facilitate understanding and description, considering that the structure may be facing other positions.

[0031] In the description of this application, unless otherwise clearly specified and limited, the technical or scientific terms used should have the usual meanings understood by persons with general skills in the field to which this application belongs. Terms such as "install", "connect", and "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, a conflicting connection, or an integrated connection. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] The embodiment of the present invention is intended to introduce and illustrate the structural composition of the automatic metal tube T-hole drawing equipment and the matching relationship between the various components. Unless otherwise specified, the size, material and manufacturing process of each component suitable for the automatic metal tube T-hole drawing equipment in the embodiment of the present invention can be selected according to the specific situation and are not specifically limited or explained here.

[0033] Further, in order to make the public have a better understanding of the present invention, some specific details are described in detail in the following detailed description of the present invention. For those skilled in the art, the present invention can be fully understood without the description of these details. Example

[0034] See also Figure 1 and Figure 2 , an automatic metal pipe T-shaped hole pulling device, including a slide rail 3.

[0035] The slide rail 3 is in the shape of a Chinese character "Yu", and has two long guide rails and two short guide rails, and the two long guide rails are fixedly connected to each other via the short guide rails.

[0036] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , an automatic metal pipe T-shaped hole-pulling device, comprising a punching mechanism 1.

[0037] Specifically, the punching mechanism 1 includes two slide frames 11 slidably connected to two long guide rails, the tops of the two slide frames 11 are commonly connected to a mounting frame 12, the middle of the mounting frame 12 is fixedly connected to four cylinders 13, the telescopic ends of the four cylinders 13 are commonly fixedly connected to a working frame 14, the working frame 14 is fixedly connected to a servo motor 15, the driving end of the servo motor 15 is fixedly connected to a punching rod 16, and the end of the punching rod 16 is integrally formed with a flat end 111.

[0038] In this embodiment, the telescopic end of the cylinder 13 moves the pulling work frame 14 vertically downward, so that the punching rod 16 with the flat end 111 can be pressed downward to punch holes.

[0039] In this embodiment, the flat end 111 has a triangular tip, and the triangular tip is used to break the tube wall of the metal tube. The flat end 111 is connected to the punching rod 16 in a T shape.

[0040] Specifically, a punching sleeve is fastened to the punching rod 16, and the punching sleeve includes two sleeve plates 110, wherein elastic plates 114 are fixedly connected to both sides of one sleeve plate 110, and docking ports for inserting the elastic plates 114 are provided on both sides of the other sleeve plate 110, and the sleeve plate 110 with the docking ports is threadedly connected with a plurality of bolts 113, and the elastic plate 114 is provided with threaded blind holes corresponding to and matching the number of the bolts 113, and four positioning columns 112 are fixedly connected to the two sleeve plates 110, and positioning holes matching the number and shape of the positioning columns 112 are provided on the punching rod 16.

[0041] In this embodiment, when the punching diameter needs to be adjusted, the bolt 113 is rotated to unscrew it from the threaded blind hole, and then two opposite forces are applied to the two sleeve plates 110 respectively, and the two sleeve plates 110 are disassembled. Then, the two sleeve plates 110 required for punching are taken to insert the positioning column 112 into the positioning hole, and then force is applied to the elastic plate 114 to deform it and insert it into the docking port, and then the bolt 113 is screwed into the threaded blind hole of the elastic plate 114 to complete the size adjustment of the punching sleeve.

[0042] Specifically, an electric telescopic rod 17 is fixedly connected to one side of the mounting frame 12 , a flat plate is fixedly connected to the telescopic end of the electric telescopic rod 17 , a speed regulating motor 18 is fixedly connected to the flat plate, and a grinding tool 19 is fixedly connected to the driving end of the speed regulating motor 18 .

[0043] In this embodiment, after punching and pulling holes are completed, the pulled-out pipe mouth is moved to be directly below the grinding tool 19, and the grinding tool 19 is pressed down by the telescopic end movement of the electric telescopic rod 17, and the grinding tool 19 is driven by the speed regulating motor 18 to rotate and grind the pulled-out pipe mouth.

[0044] See also Figure 5 and Figure 6 , an automatic metal pipe T-type hole pulling device, including a hole pulling mechanism 2.

[0045] The hole extraction mechanism 2 includes a moving frame 24 slidably connected to two long guide rails, a three-claw positioning mechanism 23 is fixedly connected to the top of the moving frame 24, a support rod 21 is fixedly connected to the top of the moving frame 24, a metal pipe can be sleeved on the support rod 21, and then clamped and positioned by the three-claw positioning mechanism 23, the support rod 21 has a receiving space, a hole extraction member 22 is slidably connected in the receiving space, two raised strips 28 are arranged in the receiving space, two grooves are provided in the hole extraction member 22, the grooves and the raised strips 28 slide relative to each other, so that the hole extraction member 22 can only move vertically inside the receiving space, a connecting groove for connecting with the flat end 111 is provided in the hole extraction member 22, the connecting groove includes an insertion groove 25 and a rotating mouth 26, the flat end 111 can rotate in the rotating mouth 26, a lifting ring 27 is integrally formed on the top of the hole extraction member 22, and the hole extraction member 22 has a hole expansion arc surface 29.

[0046] In this embodiment, after the punching mechanism 1 finishes punching, the telescopic end of the cylinder 13 extends to drive the punching rod 16 to continue to move downward, so that the flat end 111 is inserted into the insertion groove 25, and continues to move toward the inside of the hole-pulling member 22 until it enters the inside of the rotating mouth 26, and the servo motor 15 is started to rotate the punching rod 16, so that the flat end 111 is stuck inside the rotating mouth 26, and then the telescopic end of the cylinder 13 is contracted to lift the hole-pulling member 22, and the hole pulled by the punching mechanism 1 is lifted by the lifting ring 27 to form a pipe mouth, and then the pipe mouth is expanded by the expanding arc surface 29, and the diameter of the pipe mouth is controlled by adjusting the length of the expanding arc surface 29 extending to the outside of the metal pipe.

[0047] In this embodiment, the design of the three-claw positioning mechanism 23 is structurally consistent with the clamping device commonly used in the hole extraction equipment in the prior art, and both include three core components: a force source device, an intermediate force transmission mechanism, and a clamping element.

[0048] The power source device is used as a power source for providing the clamping force. Its form is various, and common ones are pneumatic, hydraulic or electric devices. In this embodiment, a pneumatic device is selected as the power source, and its detailed structure is the same as that of the pneumatic device in the prior art, so it is not repeated here.

[0049] The intermediate force transmission mechanism plays the role of transmitting and converting the force generated by the force source device. Common forms of force transmission mechanisms include levers, wedges, gear racks, etc. In this embodiment, a lever is used as the force transmission mechanism, which can effectively transmit the force generated by the pneumatic device to the clamping element.

[0050] The clamping element is a key component that directly contacts and clamps the metal pipe, and its form is also varied, and common ones include clamping rods, pressing plates or bite teeth, etc. In this embodiment, a pressing plate is selected as the clamping element, which can directly contact the metal pipe and ensure the stability of the metal pipe during processing by increasing friction or mechanical bite force.

[0051] During specific operation, the pneumatic device first generates an initial clamping force, which is transmitted to the pressure plate (i.e., the clamping element) through the intermediate force transmission mechanism of the lever. In addition, the magnitude and direction of the force transmitted to the pressure plate can be flexibly adjusted by adjusting the output of the pneumatic device or the length of the lever arm. After being acted upon by the force, the pressure plate will tightly fit and clamp the metal pipe, thereby ensuring that the metal pipe always remains in a stable state during the hole extraction process. The three-claw positioning mechanism 23 in this embodiment achieves stable clamping of the metal pipe by reasonably designing the force source device, the intermediate force transmission mechanism, and the clamping element, providing a strong guarantee for the subsequent hole extraction process.

[0052] See also Figure 6 , an automatic metal pipe T-type hole drawing device, including a heating mechanism 4.

[0053] The heating mechanism 4 includes an insertion groove opened in the accommodating space, the groove wall angle of the insertion groove is less than 90 degrees, and at least one heating plate 41 is rotatably connected in the insertion groove. In this embodiment, two heating plates 41 are used, and electric heating tubes are arranged in the heating plates 41, and the electric heating tubes are heated by external power supply.

[0054] Specifically, a touch plate 44 is slidably connected in the accommodating space, a pressure sensor is provided in the touch plate 44, and a controller is provided in the support rod 21. When the pressure sensor receives pressure, the controller will control the heating plate 41 to be powered on and heated. A spring 45 is fixedly connected to the bottom of the touch plate 44. Two traction paths are provided in the support rod 21, and a traction rope 43 is provided in each traction path. One end of the traction rope 43 is fixedly connected to the touch plate 44, and the other end of the traction rope 43 is fixedly connected to the heating plate 41. A plurality of auxiliary pulleys 42 are rotatably connected in each traction path, and the traction rope 43 is slidably connected to the auxiliary pulley 42.

[0055] In this embodiment, when the hole-pulling member 22 is pressed on the touch plate 44, the spring 45 is deformed by the force, and the traction rope 43 located at the spring 45 is loosened. Since the angle of the groove wall of the heating plate 41 is less than 90 degrees, it is always in an inclined state. After the traction of the traction rope 43 is removed, one end of the heating plate 41 is driven by its own weight to rotate as a whole, so that the heating plate 41 covers the expanded hole arc surface 29 for heating.

[0056] It should be noted that the groove wall angle refers to the angle between the two side walls that the touch plate 44 can contact in a rotational manner when placed in the groove. The above-mentioned heating plate 41 is always in an inclined state, which means that the heating plate 41 is in an inclined state with the horizontal plane as a reference.

[0057] In this embodiment, the follower is composed of a touch plate 44, a spring 45, a traction rope 43 and an auxiliary pulley 42. When the hole-pulling member 22 moves upward, the elastic recovery of the spring 45 can push the touch plate 44 to move, so that the traction rope 43 is pulled by the touch plate 44, so that the other end of the traction rope 43 pulls the heating plate 41 to rotate and fit into the inner wall of the groove, thereby preventing the movement of the hole-pulling member 22 from being affected.

[0058] In this embodiment, the specific steps of pulling out the hole are: S1. Put the metal tube on the support rod 21, and then clamp the metal tube with the three-claw positioning mechanism 23. Before punching, screw it out of the threaded blind hole by turning the bolt 113, and then apply two opposite forces to the two sleeves 110 respectively, disassemble the two sleeves 110, and then take the two sleeves 110 required for punching to insert the positioning column 112 into the positioning hole, and then apply force to the elastic plate 114 to deform it and insert it into the docking interface, and then screw the bolt 113 into the elastic plate The size adjustment of the punching sleeve can be completed by inserting the hole-pulling member 22 into the threaded blind hole 114; and the hole-pulling member 22 is pressed on the touch plate 44, the spring 45 is in a deformed state, and the traction rope 43 located at the spring 45 is loosened, and the heating plate 41 is always in an inclined state because the angle of the groove wall of the groove is less than 90 degrees. After the traction of the traction rope 43 is removed, one end of the heating plate 41 is driven by its own weight to rotate as a whole, so that the heating plate 41 covers the expanded arc surface 29 for heating; S2, the telescopic end of the cylinder 13 is used to move the traction work frame 14 vertically downward, so that the punching rod 16 with the flat end 111 is pressed down to automatically punch holes; S3, after the punching is completed, the telescopic end of the cylinder 13 extends to drive the punching rod 16 to continue to press down and move, so that the flat end 111 is inserted into the insertion groove 25, and continues to move toward the inside of the hole-pulling member 22 until it enters the inside of the rotating opening 26, and the servo motor 15 is started to rotate the punching rod 16, so that the flat end 111 is locked inside the rotating opening 26, and then the telescopic end of the cylinder 13 is retracted to lift the hole-pulling member 22, and the hole pulled by the punching mechanism 1 is lifted by the lifting ring 27 to form a pipe mouth, and then the pipe mouth is enlarged by the hole-expanding arc surface 29, thereby completing the automatic hole-pulling operation; S4. After punching and pulling holes, the pulled-out pipe mouth is moved to the bottom of the grinding tool 19. The grinding tool 19 is pressed down by the telescopic end of the electric telescopic rod 17. The grinding tool 19 is driven by the speed regulating motor 18 to rotate and grind the pulled-out pipe mouth.

[0059] It should be understood that the above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, some simple deductions or substitutions can be made without departing from the concept of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. An automatic metal pipe T-shaped hole extraction device, characterized in that: include: A punching mechanism (1), the punching mechanism (1) comprising a punching rod (16), the punching rod (16) having a flat end (111) for puncturing a metal tube, and a punching sleeve for expanding a hole being fastened to the punching rod (16); A hole-pulling mechanism (2), the hole-pulling mechanism (2) comprising a hole-pulling member (22), the hole-pulling member (22) having a hole-expanding arc surface (29), and a connecting groove for connecting to a flat end (111) is provided in the hole-pulling member (22), so that the punching mechanism (1) can drive the hole-pulling mechanism (2) to pull a hole; A heating mechanism (4), wherein the heating mechanism (4) has a heating plate (41) for heating the hole expansion arc surface (29); when the hole extraction mechanism (2) is in a working state, the heating mechanism (4) stops heating.

2. The automatic metal pipe T-hole extraction device according to claim 1, characterized in that: The hole-pulling mechanism (2) further comprises a support rod (21) for positioning the metal pipe, the support rod (21) having an accommodation space for accommodating a hole-pulling member (22), and the hole-pulling member (22) can only move vertically in the accommodation space.

3. The automatic metal pipe T-hole extraction device according to claim 1, characterized in that: The connecting groove comprises an insertion groove (25) and a rotation opening (26), and the flat end (111) is capable of rotating in the rotation opening (26).

4. The automatic metal pipe T-hole extraction device according to claim 1, characterized in that: A lifting ring (27) is integrally formed on the top of the hole-pulling member (22).

5. The automatic metal pipe T-hole extraction device according to claim 1, characterized in that: The punching sleeve comprises two sleeve plates (110), one of the sleeve plates (110) is internally threadedly connected to a bolt (113), and the two sleeve plates (110) are fastened to the punching rod (16) via the bolt (113).

6. The automatic metal pipe T-hole extraction device according to claim 5, characterized in that: At least one positioning column (112) is fixedly connected to the sleeve plate (110), and a plurality of positioning holes matching the positioning columns (112) are formed on the punching rod (16).

7. The automatic metal pipe T-hole extraction device according to claim 1, characterized in that: The heating mechanism (4) also includes a driven member, and when the hole-pulling member (22) is pressed on the driven member, the heating plate (41) is attached to the hole-expanding arc surface (29) by its own weight.

8. The automatic metal pipe T-hole extraction device according to claim 2, characterized in that: At least one protruding strip (28) is arranged in the accommodating space, and grooves matching the number of the protruding strips (28) are provided in the hole-pulling member (22).

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