Punching device for flange plate manufacturing

Abstract

The invention relates to the technical field of drilling, and discloses a punching device for flange plate manufacturing, which comprises a curved support rod, a main mounting plate, a fixed base sleeve, two drill rods, a belt type linkage mechanism and a punching distance adjusting mechanism, and a first butt joint plate is arranged at one end of the top of the curved support rod. According to the punching device for flange plate manufacturing, two symmetrical bolt holes in a flange plate can be drilled at the same time through one driving motor, so that the punching efficiency is effectively improved, the kinetic energy utilization rate of the motor is increased, in addition, the punching position can be adjusted according to the positions of the bolt holes, and the punching efficiency is improved. And therefore, the flange plates with different sizes can be punched, and the adaptability of the equipment in the aspect of punching sizes is improved.

Description

Technical Field

[0001] The invention relates to the technical field of drilling, in particular to a drilling device for flange manufacturing. Background Art

[0002] Flange, also known as flange flange or flange, is a part that connects shafts to each other and is used to connect pipe ends. It is also useful as a flange on the inlet and outlet of equipment for connection between two devices, such as reducer flange. Flange connection or flange joint refers to a detachable connection composed of flange, gasket and bolts as a combined sealing structure. Pipe flange refers to the flange used for piping in pipeline installations. It is used on equipment to refer to the inlet and outlet flanges of the equipment. A punching device is required during the manufacturing process of the flange.

[0003] For example, the Chinese patent with publication number "CN212094468U" discloses "A punching device for flange manufacturing", whose main structure includes an L-shaped support frame, a punching mechanism is provided above the L-shaped support frame, a fixing seat is provided above the bottom of the L-shaped support frame, a limited hole is provided in the middle of the fixing seat, and the two sides of the fixing seat are connected to the L-shaped support frame through two symmetrically arranged adjustment mechanisms, and a clamping mechanism is provided below the fixing seat, and the clamping mechanism includes a movable groove provided at the top of the L-shaped support frame, a No. 1 threaded rod is rotatably installed inside the movable groove, and the outer thread of the No. 1 threaded rod is threaded with two groups of threaded blocks with opposite threads, and a semicircular support rod is vertically connected to the top of the two groups of threaded blocks. The punching device for flange manufacturing drills holes in the flange by a downward-pressing drill bit.

[0004] However, the punching device for flange manufacturing can only punch one bolt hole of the flange during a single press-down drilling operation, while the flange requires multiple bolt holes. A single punching method results in relatively low drilling efficiency. Summary of the Invention

[0005] In response to the shortcomings of the existing technology, the present invention provides a punching device for flange manufacturing, which uses a driving motor to simultaneously drill two symmetrical bolt holes in the flange, thereby effectively improving the punching efficiency and improving the kinetic energy utilization of the motor. In addition, the device can adjust the punching position according to the position of the bolt hole, so as to punch flanges of different sizes, thereby improving the adaptability of the equipment in terms of punching size, and solving the above-mentioned technical problems.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a punching device for flange manufacturing, comprising a curved support rod with a No. 1 docking plate provided at one end of the top, a main mounting plate provided at the bottom end of the curved support rod, a fixed base sleeve and two drill rods, and a belt-type linkage mechanism, inside which a No. 1 pulley capable of rotating with the rotor of a driving motor, two No. 2 pulleys capable of driving the drill rod to rotate, a belt capable of achieving linkage between the No. 1 pulley and the two No. 2 pulleys, and a No. 3 pulley capable of rotating with the belt and producing a pre-tightening effect on the belt; and a punching spacing adjustment mechanism, inside which a No. 1 externally threaded rod and a No. 2 externally threaded rod capable of driving the two No. 2 pulleys to move horizontally, a horizontal threaded sleeve threadedly connected to the No. 1 externally threaded rod and the No. 2 externally threaded rod and capable of changing the distance between the No. 1 externally threaded rod and the No. 2 externally threaded rod when rotating, and a polygonal limiting rod inserted at the axis of the No. 1 externally threaded rod and the No. 2 externally threaded rod and capable of preventing the No. 1 externally threaded rod and the No. 2 externally threaded rod from rotating relative to each other.

[0007] Preferably, the belt-type linkage mechanism includes a cross-shaped limit plate, one side of the cross-shaped limit plate is provided with a second docking plate with an integral structure therewith, the cross-shaped limit plate is provided with a No. 1 shaft body mounting hole on the side opposite to the No. 2 docking plate, and the other two sides of the cross-shaped limit plate are respectively provided with a horizontal limit slide groove in a horizontal state, the bottom of the cross-shaped limit plate is fixedly installed with a driving motor, the rotor of the driving motor is installed in the No. 1 shaft body mounting hole through a bearing, and a No. 1 pulley is fixedly installed on the top, and the cross-shaped limit plate is provided with a working-shaped limiting slider that can slide horizontally along the horizontal limiting slide groove in the horizontal limiting slide groove. The interior of the limit slider is provided with a No. 2 shaft mounting hole with the top and bottom ends being open. The working-shaped limit slider is provided with a rotatable longitudinal rotating shaft inside the No. 2 shaft mounting hole through a bearing. A No. 2 pulley is fixedly installed on the top of each longitudinal rotating shaft, and the bottom end of the longitudinal rotating shaft is fixedly connected to the top of the drill rod through a coupling. The No. 1 pulley and the two No. 2 pulleys are linked by a belt, and the belt hits a rotatable No. 3 pulley on the outside of the belt body near the No. 2 docking disk. The No. 3 pulley is mounted on one end of a movable mounting block through a bearing, and the other end of the movable mounting block is provided with a rod fixing groove with an inner concave structure.

[0008] Preferably, the length of the belt is greater than the perimeter of a triangle formed by the No. 1 pulley and the two No. 2 pulleys.

[0009] Preferably, the No. 1 pulley, the two No. 2 pulleys and the No. 3 pulley are at the same horizontal height.

[0010] Preferably, the drilling spacing adjustment mechanism includes a horizontal threaded sleeve, a No. 1 externally threaded rod and a No. 2 externally threaded rod, one end of the horizontal threaded sleeve is provided with a No. 1 internally threaded cavity with an inner concave structure, and the other end of the horizontal threaded sleeve is provided with a No. 2 internally threaded cavity with an inner concave structure, the rod body of the No. 1 externally threaded rod is installed inside the No. 1 internally threaded cavity through the No. 1 threaded structure, and the rod body of the No. 2 externally threaded rod is installed inside the No. 2 internally threaded cavity through the No. 2 threaded structure, the No. 1 externally threaded rod and the No. 2 externally threaded rod are provided with polygonal limiting cavities with inner concave structures at opposite ends, and a polygonal limiting rod inserted into the polygonal limiting cavity is fixedly installed at the center of the horizontal threaded sleeve, one end of the No. 1 externally threaded rod is provided with a No. 1 fixing sleeve with an integral structure therewith and installed on the periphery of one of the longitudinal rotating shafts through a main bearing, and one end is provided with a No. 2 fixing sleeve with an integral structure therewith and installed on the periphery of the other longitudinal rotating shaft through a main bearing.

[0011] Preferably, the structural shape of the polygonal limiting cavity cross section is consistent with the structural shape of the polygonal limiting rod cross section, both are polygonal structures, and the structural dimensions of the polygonal limiting cavity cross section match the structural dimensions of the polygonal limiting rod cross section.

[0012] Preferably, the No. 1 thread structure includes an internal thread structure arranged inside the No. 1 internal thread cavity and an external thread structure arranged on the No. 1 external thread rod body, and the No. 2 thread structure includes an internal thread structure arranged inside the No. 2 internal thread cavity and an external thread structure arranged on the No. 2 external thread rod body, and the spiral direction of the No. 1 thread structure is opposite to the spiral direction of the No. 2 thread structure.

[0013] Preferably, it also includes an elastic pre-tightening mechanism, which is internally provided with a horizontal hollow rod fixedly installed on one side of the No. 2 docking plate and hollow inside, a horizontal movable rod capable of driving the movable mounting block to move axially along the horizontal hollow rod, and a coil spring that produces an elastic damping effect on the horizontal movable rod.

[0014] Preferably, the elastic pre-tightening mechanism includes a No. 3 docking plate which is arranged at one end of a horizontal hollow rod and fixedly connected to the No. 2 docking plate, a horizontal component movable cavity is arranged inside the horizontal hollow rod, and the other end of the horizontal hollow rod is provided with a rod body through-hole with one end in an open state and the other end connected to the horizontal component movable cavity, the horizontal hollow rod is provided with a built-in movable plate which can move axially along the horizontal component movable cavity, the built-in movable plate is fixedly installed with a horizontal movable rod which passes through the rod body through-hole at the end facing the rod body through-hole, the other end of the built-in movable plate is installed with a coil spring in a compressed state, and one end of the horizontal movable rod is fixedly installed inside the rod body fixing groove.

[0015] Preferably, the structural shape of the cross section of the rod body through hole is consistent with the structural shape of the cross section of the horizontal movable rod, both of which are polygonal structures, and the structural dimensions of the cross section of the rod body through hole match the structural dimensions of the cross section of the horizontal movable rod.

[0016] Compared with the prior art, the present invention provides a punching device for flange manufacturing, which has the following beneficial effects: Using a drive motor, two symmetrical bolt holes in the flange can be drilled simultaneously, thereby effectively improving the drilling efficiency and improving the kinetic energy utilization of the motor. In addition, the device can adjust the drilling position according to the location of the bolt hole, so as to drill flanges of different sizes, thereby improving the adaptability of the equipment in terms of drilling size. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A perspective view of the present invention; Figure 2 is a three-dimensional cross-sectional view of the present invention; Figure 3 A three-dimensional diagram of the belt-type linkage mechanism of the present invention; Figure 4 is a three-dimensional cross-sectional view of the belt-type linkage mechanism of the present invention; Figure 5 A three-dimensional diagram of the punching spacing adjustment mechanism of the present invention; Figure 6 It is a three-dimensional cross-sectional view of the punching spacing adjustment mechanism of the present invention; Figure 7 is a three-dimensional diagram of the elastic preload mechanism of the present invention; Figure 8 It is a three-dimensional cross-sectional view of the elastic preload mechanism in the present invention.

[0018] Wherein: 1. Curved support rod; 2. Fixed base sleeve; 3. Main mounting plate; 4. No. 1 docking plate; 5. Belt linkage mechanism; 51. Cross-shaped limit plate; 52. No. 2 docking plate; 53. No. 1 shaft mounting hole; 54. Horizontal limit slide; 55. Drive motor; 56. No. 1 pulley; 57. Work-shaped limit slider; 58. Longitudinal rotating shaft; 59. No. 2 pulley; 510. No. 3 pulley; 511. Mobile mounting block; 512. Rod fixing groove; 513. Belt; 514. No. 2 shaft mounting hole; 6. Punch spacing adjustment mechanism 61. Horizontal threaded sleeve; 62. No. 1 internal thread cavity; 63. No. 2 internal thread cavity; 64. No. 1 thread structure; 65. No. 2 thread structure; 66. No. 1 external thread rod; 67. No. 2 external thread rod; 68. No. 1 fixing sleeve; 69. No. 2 fixing sleeve; 610. Polygonal limit cavity; 611. Polygonal limit rod; 7. Elastic preload mechanism; 71. Horizontal hollow rod; 72. No. 3 docking plate; 73. Horizontal component movable cavity; 74. Rod body through hole; 75. Built-in movable plate; 76. Coil spring; 77. Horizontal movable rod; 8. Drill rod. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 1 and Figure 2 A drilling device for flange manufacturing includes a curved support rod 1 with a No. 1 docking plate 4 at one end of the top, a main mounting plate 3 arranged at the bottom end of the curved support rod 1, a fixed base sleeve 2 and two drill rods 8. The main mounting plate 3 is fixedly installed in the lifting arm of a lifting device by bolts, and then the flange to be punched is installed in the clamping mechanism. At this time, the center point of the flange needs to be located directly below the center point of the punching spacing adjustment mechanism 6 to complete the preparation work before punching.

[0021] In order to effectively improve the drilling efficiency and improve the utilization of the motor's kinetic energy, and at the same time have the ability to adjust the drilling spacing, please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4, it is necessary to set up a belt-type linkage mechanism 5, which is internally provided with a No. 1 pulley 56 that can rotate with the rotor of the driving motor 55, two No. 2 pulleys 59 that can drive the drill rod 8 to rotate, a belt 513 that can realize linkage between the No. 1 pulley 56 and the two No. 2 pulleys 59, and a No. 3 pulley 510 that can rotate with the belt 513 and can produce a pre-tightening effect on the belt 513. When the driving motor 55 is started, its rotor will drive the No. 1 pulley 56 to rotate. Under the action of the belt 513, it can simultaneously drive the two No. 2 pulleys 59 to rotate, and the rotation of the two No. 2 pulleys 59 will cause the drill rod 8 to rotate. Then, by controlling the lifting arm, the drill rod 8 can punch holes in the flange. It can punch holes in two symmetrical parts at the same time, thereby effectively improving the drilling efficiency and improving the utilization rate of the motor's kinetic energy. At the same time, the two working-shaped limit sliders 57 can slide horizontally along the horizontal limit slide groove 54, so as to have the function of adjusting the drilling distance, and the drilling distance refers to the horizontal distance between the drilling position and the axis of the flange.

[0022] For the specific structure of the belt type linkage mechanism 5, please refer to Figure 3 and Figure 4 , including a cross-shaped limiting plate 51, one side of which is provided with a second docking plate 52 of an integral structure therewith, and a No. 1 shaft mounting hole 53 is provided inside the cross-shaped limiting plate 51 on the side opposite to the No. 2 docking plate 52, and a horizontal limiting slide 54 is provided on the other two sides of the cross-shaped limiting plate 51. A driving motor 55 is fixedly installed at the bottom of the cross-shaped limiting plate 51, and the rotor of the driving motor 55 is installed inside the No. 1 shaft mounting hole 53 through a bearing, and a No. 1 pulley 56 is fixedly installed on the top. A working-shaped limiting slider 57 that can slide horizontally along the horizontal limiting slide 54 is placed in the horizontal limiting slide 54 of the cross-shaped limiting plate 51, and the interior of the working-shaped limiting slider 57 is provided with a No. 2 shaft mounting hole 514 with an open top and a bottom. The working-shaped limiting slider 57 is located in the No. 2 shaft mounting hole A rotatable longitudinal shaft 58 is installed inside 514 through a bearing, and a No. 2 pulley 59 is fixedly installed on the top of each longitudinal shaft 58. The bottom end of the longitudinal shaft 58 is fixedly connected to the top of the drill rod 8 through a coupling. The No. 1 pulley 56 and the two No. 2 pulleys 59 are linked by a belt 513. The belt 513 contacts a rotatable No. 3 pulley 510 on the outer side of the belt body near the No. 2 docking plate 52. The No. 3 pulley 510 is installed at one end of a movable mounting block 511 through a bearing, and the other end of the movable mounting block 511 is provided with a rod fixing groove 512 with an inner concave structure. The length of the belt 513 is greater than the circumference of the triangle formed by the No. 1 pulley 56 and the two No. 2 pulleys 59. The No. 1 pulley 56, the two No. 2 pulleys 59 and the No. 3 pulley 510 are at the same horizontal height.

[0023] To adjust the spacing of two punch positions simultaneously and improve adjustment efficiency, refer to Figure 1 、 Figure 2 、 Figure 5 and Figure 6 , it is necessary to set a punching spacing adjustment mechanism 6, which is provided with a No. 1 externally threaded rod 66 and a No. 2 externally threaded rod 67 that can drive the two No. 2 pulleys 59 to move horizontally, a horizontal threaded sleeve 61 that is threadedly connected to the No. 1 externally threaded rod 66 and the No. 2 externally threaded rod 67 and can change the distance between the No. 1 externally threaded rod 66 and the No. 2 externally threaded rod 67 when rotating, and a polygonal limit rod 611 that is inserted into the axis of the No. 1 externally threaded rod 66 and the No. 2 externally threaded rod 67 and can prevent the No. 1 externally threaded rod 66 and the No. 2 externally threaded rod 67 from rotating relative to each other. , the horizontal threaded sleeve 61 is rotated in a directional manner. Since the spiral direction of the No. 1 threaded structure 64 is opposite to the spiral direction of the No. 2 threaded structure 65, and during the rotation process, the existence of the polygonal limit rod 611 prevents the No. 1 externally threaded rod 66 and the No. 2 externally threaded rod 67 from rotating relative to each other. Therefore, the distance between the No. 1 externally threaded rod 66 and the No. 2 externally threaded rod 67 will change at the same time, so that the two longitudinal rotating shafts 58 can drive the two drill rods 8 to move synchronously, and then adjust the spacing of the two drilling positions synchronously at the same time, thereby improving the adjustment efficiency.

[0024] For the specific structure of the punching spacing adjustment mechanism 6, please refer to Figure 5 and Figure 6, including a horizontal threaded sleeve 61, a No. 1 externally threaded rod 66 and a No. 2 externally threaded rod 67, one end of the horizontal threaded sleeve 61 is provided with a No. 1 internally threaded cavity 62 with an inner concave structure, and the other end of the horizontal threaded sleeve 61 is provided with a No. 2 internally threaded cavity 63 with an inner concave structure, the rod body of the No. 1 externally threaded rod 66 is installed in the interior of the No. 1 internally threaded cavity 62 through the No. 1 threaded structure 64, and the rod body of the No. 2 externally threaded rod 67 is installed in the interior of the No. 2 internally threaded cavity 63 through the No. 2 threaded structure 65, the No. 1 externally threaded rod 66 and the No. 2 externally threaded rod 67 are provided with a polygonal limiting cavity 610 with an inner concave structure at the opposite ends, a polygonal limiting rod 611 inserted into the polygonal limiting cavity 610 is fixedly installed in the center of the horizontal threaded sleeve 61, and one end of the No. 1 externally threaded rod 66 is provided with a structure integral with it and installed on one of the longitudinal rotating shafts through a main bearing. 58 shaft body, a No. 1 fixing sleeve 68 is provided at one end with a No. 2 fixing sleeve 69 which is an integral structure with the No. 1 fixing sleeve and is installed on the periphery of another longitudinal rotating shaft 58 shaft body through a main bearing. The structural shape of the cross section of the polygonal limiting cavity 610 is consistent with the structural shape of the cross section of the polygonal limiting rod 611, both of which are polygonal structures, and the structural dimensions of the cross section of the polygonal limiting cavity 610 match the structural dimensions of the cross section of the polygonal limiting rod 611. The No. 1 threaded structure 64 includes an internal threaded structure arranged inside the No. 1 internal threaded cavity 62 and an external threaded structure arranged on the rod body of the No. 1 external threaded rod 66. The No. 2 threaded structure 65 includes an internal threaded structure arranged inside the No. 2 internal threaded cavity 63 and an external threaded structure arranged on the rod body of the No. 2 external threaded rod 67, and the spiral direction of the No. 1 threaded structure 64 is opposite to the spiral direction of the No. 2 threaded structure 65.

[0025] In order to keep the belt 513 in a tight state and thus reduce the kinetic energy loss during the transmission process, please refer to Figure 1 、 Figure 2 、 Figure 7 and Figure 8 , it is necessary to set up an elastic pre-tightening mechanism 7, which is provided with a horizontal hollow rod 71 fixedly installed on one side of the No. 2 docking plate 52 and with a hollow interior, a horizontal movable rod 77 that can drive the movable mounting block 511 to move axially along the horizontal hollow rod 71, and a coil spring 76 that produces an elastic damping effect on the horizontal movable rod 77. When the longitudinal rotating shaft 58 is moving, the distance between the two No. 2 pulleys 59 will change. At this time, the working shape of the belt 513 will change, and the No. 3 pulley 510 can transmit the change in shape to the coil spring 76, so that the coil spring 76 undergoes adaptive deformation, and the coil spring 76 will always provide elastic force, so that the belt 513 is in a taut state, thereby reducing the kinetic energy loss during the transmission process.

[0026] For the specific structure of the elastic pre-tightening mechanism 7, please refer to Figure 7 and Figure 8 The lock body 73 of the present invention is fixed with the lock body 71 and the lock body 72, and the lock body 73 is unlocked, and the unlocking mechanism 72 is unlocked.

[0027] When in use, the main mounting plate 3 is fixedly installed in the lifting arm of a lifting device by bolts, and then the flange to be punched is installed in the clamping mechanism. At this time, the center point of the flange needs to be located directly below the center point of the punching spacing adjustment mechanism 6. The horizontal threaded sleeve 61 is rotated in a directional manner. The distance between the No. 1 external threaded rod 66 and the No. 2 external threaded rod 67 will change at the same time, so that the two longitudinal rotating shafts 58 can drive the two drill rods 8 to move synchronously until the punching position is adjusted to the desired orientation. When the longitudinal rotating shaft 58 is in the process of moving, the distance between the two No. 2 pulleys 59 will change. At this time, the belt 5 13's working shape will change, and the third pulley 510 can transmit the change in shape to the coil spring 76, so that the coil spring 76 will undergo adaptive deformation, and the coil spring 76 will always provide elastic force, so that the belt 513 is in a taut state, and the drive motor 55 is started. Its rotor will drive the number one pulley 56 to rotate, and under the action of the belt 513, it can simultaneously drive the two number two pulleys 59 to rotate, and the two number two pulleys 59 will rotate when they rotate, and the drill rod 8 can be rotated by controlling the lifting arm, and then the drill rod 8 can punch holes in the flange, and it can punch holes in two symmetrical parts at the same time.

[0028] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A punching device for flange manufacturing, comprising a curved support rod (1) with a first docking plate (4) provided at one end of the top, a main mounting plate (3) provided at the bottom end of the curved support rod (1), a fixed base sleeve (2) and two drill rods (8), characterized in that: Also includes, A belt-type linkage mechanism (5) is provided with a first pulley (56) capable of rotating with the rotor of the drive motor (55), two second pulleys (59) capable of driving the drill rod (8) to rotate, a belt (513) capable of achieving linkage between the first pulley (56) and the two second pulleys (59), and a third pulley (510) capable of rotating with the belt (513) and producing a pre-tightening effect on the belt (513); and a punching spacing adjustment mechanism (6), which is internally provided with a No. 1 externally threaded rod (66) and a No. 2 externally threaded rod (67) capable of driving the two No. 2 pulleys (59) to move horizontally, a horizontal threaded sleeve (61) threadedly connected to the No. 1 externally threaded rod (66) and the No. 2 externally threaded rod (67) and capable of changing the distance between the No. 1 externally threaded rod (66) and the No. 2 externally threaded rod (67) when rotating, and a polygonal limiting rod (611) inserted into the axis of the No. 1 externally threaded rod (66) and the No. 2 externally threaded rod (67) and capable of preventing the No. 1 externally threaded rod (66) and the No. 2 externally threaded rod (67) from rotating relative to each other.

2. A punching device for flange manufacturing according to claim 1, characterized in that: The belt-type linkage mechanism (5) includes a cross-shaped limiting plate (51), a side portion of the cross-shaped limiting plate (51) is provided with a second docking plate (52) with an integral structure therewith, a first shaft body mounting hole (53) is provided inside the cross-shaped limiting plate (51) on a side opposite to the second docking plate (52), and a horizontal limiting slide groove (54) is provided on the other two sides of the cross-shaped limiting plate (51), a driving motor (55) is fixedly installed at the bottom of the cross-shaped limiting plate (51), a rotor of the driving motor (55) is installed inside the first shaft body mounting hole (53) through a bearing, and a first pulley (56) is fixedly installed at the top, and a working-shaped limiting slider (57) capable of sliding horizontally along the horizontal limiting slide groove (54) is placed in the cross-shaped limiting plate (51) in the horizontal limiting slide groove (54), and the working-shaped limiting slider (57) is provided with a horizontal limiting slide groove (54). A second shaft mounting hole (514) with an open top and bottom is provided inside the second shaft mounting hole (514). A longitudinal rotating shaft (58) capable of rotation is installed in the interior of the working-shaped limiting slider (57) through a bearing. A second pulley (59) is fixedly installed at the top of each longitudinal rotating shaft (58). The bottom end of the longitudinal rotating shaft (58) is fixedly connected to the top of the drill rod (8) through a coupling. The first pulley (56) and the two second pulleys (59) are linked by a belt (513). The belt (513) contacts a third pulley (510) capable of rotation on the outer side of the belt body near the second docking plate (52). The third pulley (510) is installed on one end of a movable mounting block (511) through a bearing. The other end of the movable mounting block (511) is provided with a rod fixing groove (512) with an inner concave structure.

3. A punching device for flange manufacturing according to claim 2, characterized in that: The length of the belt (513) is greater than the perimeter of a triangle formed by the first pulley (56) and the two second pulleys (59).

4. A punching device for flange manufacturing according to claim 3, characterized in that: The first pulley (56), the two second pulleys (59) and the third pulley (510) are at the same level.

5. A punching device for flange manufacturing according to claim 4, characterized in that: The punching spacing adjustment mechanism (6) includes a horizontal threaded sleeve (61), a No. 1 external threaded rod (66) and a No. 2 external threaded rod (67), one end of the horizontal threaded sleeve (61) is provided with a No. 1 internal threaded cavity (62) with an inner concave structure, and the other end of the horizontal threaded sleeve (61) is provided with a No. 2 internal threaded cavity (63) with an inner concave structure, the rod body of the No. 1 external threaded rod (66) is installed inside the No. 1 internal threaded cavity (62) through the No. 1 threaded structure (64), and the rod body of the No. 2 external threaded rod (67) is installed inside the No. 2 internal threaded cavity (63) through the No. 2 threaded structure (65). The No. 1 external threaded rod (66) and the No. 2 external threaded rod (67) are provided with a polygonal limiting cavity (610) with an inner concave structure at the opposite ends, and a polygonal limiting rod (611) inserted into the polygonal limiting cavity (610) is fixedly installed at the center of the horizontal threaded sleeve (61), and one end of the No. 1 external threaded rod (66) is provided with a No. 1 fixing sleeve (68) which is an integral structure with it and is installed on the outer periphery of one of the longitudinal rotating shafts (58) through a main bearing, and one end of the No. 1 external threaded rod (66) is provided with a No. 2 fixing sleeve (69) which is an integral structure with it and is installed on the outer periphery of the other longitudinal rotating shaft (58) through a main bearing.

6. A punching device for flange manufacturing according to claim 5, characterized in that: The structural shape of the cross section of the polygonal limiting cavity (610) is consistent with the structural shape of the cross section of the polygonal limiting rod (611), both of which are polygonal structures, and the structural dimensions of the cross section of the polygonal limiting cavity (610) match the structural dimensions of the cross section of the polygonal limiting rod (611).

7. The punching device for flange manufacturing according to claim 6, characterized in that: The No. 1 thread structure (64) includes an internal thread structure arranged inside the No. 1 internal thread cavity (62) and an external thread structure arranged on the rod body of the No. 1 external thread rod (66); the No. 2 thread structure (65) includes an internal thread structure arranged inside the No. 2 internal thread cavity (63) and an external thread structure arranged on the rod body of the No. 2 external thread rod (67); and the spiral direction of the No. 1 thread structure (64) is opposite to the spiral direction of the No. 2 thread structure (65).

8. A punching device for flange manufacturing according to any one of claims 2 to 7, characterized in that: It also includes an elastic pre-tightening mechanism (7), which is provided with a horizontal hollow rod (71) fixedly mounted on one side of the second docking plate (52) and having a hollow interior, a horizontal movable rod (77) capable of driving the movable mounting block (511) to move axially along the horizontal hollow rod (71), and a coil spring (76) that produces an elastic damping effect on the horizontal movable rod (77).

9. The punching device for flange manufacturing according to claim 8, characterized in that: The elastic preload mechanism (7) includes a No. 3 docking plate (72) provided at one end of a horizontal hollow rod (71) and fixedly connected to the No. 2 docking plate (52); a horizontal component movable cavity (73) is provided inside the horizontal hollow rod (71); a rod body through hole (74) is provided at the other end of the horizontal hollow rod (71), one end of which is in an open state and the other end is connected to the horizontal component movable cavity (73); a built-in movable plate (75) capable of axial movement along the horizontal component movable cavity (73) is placed inside the horizontal component movable cavity (73) of the horizontal hollow rod (71); a horizontal movable rod (77) penetrating the rod body through hole (74) is fixedly installed on the end of the built-in movable plate (75) facing the rod body through hole (74); a coil spring (76) in a compressed state is installed on the other end of the built-in movable plate (75); and one end of the horizontal movable rod (77) is fixedly installed inside the rod body fixing groove (512).

10. The punching device for flange manufacturing according to claim 9, characterized in that: The structural shape of the cross section of the rod body through hole (74) is consistent with the structural shape of the cross section of the horizontal movable rod (77), both of which are polygonal structures, and the structural dimensions of the cross section of the rod body through hole (74) match the structural dimensions of the cross section of the horizontal movable rod (77).

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