Steel pipe forging device with positioning mechanism

Abstract

The invention discloses a steel pipe forging device with a positioning mechanism, which relates to the technical field of steel pipe forging and comprises a mounting frame, a core anvil, the positioning mechanism and a pneumatic hammer. And a component force forging mechanism for changing the forging direction of the pneumatic hammer is arranged on the mounting frame. The component force forging mechanism is arranged, kinetic energy provided by the pneumatic hammer is dispersed to the forging hammer, in the kinetic energy transmission process, under the condition that kinetic energy loss is reduced to the maximum degree, forging work is achieved, the kinetic energy loss is reduced, and the forging strength and precision are guaranteed; through cooperation with the first linkage mechanism, downward force applied by the pneumatic hammer is converted into rotating force, the mounting ring is pushed to generate large torque, then large force can be provided for pushing the forging hammer to move, and the forging effect is guaranteed; and by arranging the buffering mechanism, the reverse acting force borne by the rotating rod and the second connecting rod is buffered, and the situation that the rotating rod and the second connecting rod are deformed due to stress, and the next forging work is affected is prevented.

Description

Technical Field

[0001] The invention relates to the technical field of steel pipe forging, and in particular to a steel pipe forging device with a positioning mechanism. Background Art

[0002] During the processing of steel pipes, forging is required to adjust the wall thickness, etc., and radial forging is mostly used.

[0003] During radial forging, a positioning mechanism is first used to clamp one end of the hollow steel ingot on one side of a forging press, and one end is forged by multiple hammers of the forging press. However, the existing steel pipe forging device with a positioning mechanism still has some problems during use.

[0004] For example, Chinese patent publication number CN115846565A discloses a seamless steel pipe forging device, which relates to the field of forging machinery, including a base, a forging mechanism is provided in the middle position of the base, the forging mechanism includes a support seat fixedly provided on the base, an annular block is fixedly provided on the support seat, a push block is symmetrically and slidably provided on the annular block, two groups of limiting grooves distributed in an annular array are symmetrically opened on the annular block, a limiting slider is slidably provided in the limiting groove, and the forging power is provided by an external pneumatic air hammer. Through the structural setting of the forging mechanism, the power from the pneumatic air hammer is dispersed to each forging hammer, and each time the forging is completed, the rotating mechanism and the forging hammer are automatically driven to rotate a fixed angle. During this process, the seamless steel pipe does not rotate, thereby ensuring the accuracy of positioning, thereby ensuring the accuracy of the processing size, and also ensuring the upper limit of the forging force, which can stably adapt to the forging requirements of seamless steel pipes with larger wall thicknesses.

[0005] Since the above-mentioned device uses a pneumatic air hammer to provide forging power, the power from the pneumatic air hammer is dispersed to each forging hammer. When using the forging hammer for forging, the air hammer and the forging hammer are provided with force transmission through the forging mechanism, which will cause a large kinetic energy loss. In order to synchronously push the forging hammers on multiple pressure rods to move, the push block needs to be set to a larger volume. In order to ensure the effective moving distance of the pressure rod and the impact effect of the forging hammer, the push block needs to have a larger chamfered surface. Therefore, the push block itself is large in volume and weight. The pneumatic hammer is used to push the push block to move horizontally, thereby realizing the forging method, resulting in a large inertia loss, affecting the forging force; and the pressure rod generates a large friction with the push block during the movement, resulting in friction loss of the pressure rod, affecting the forging force and forging accuracy. Summary of the invention

[0006] In order to overcome the above technical problems, the purpose of the present invention is to provide a steel pipe forging device with a positioning mechanism to solve the problem of large forging force loss in the existing steel pipe forging device mentioned in the above background technology, which affects the forging force and accuracy.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] A steel pipe forging device with a positioning mechanism comprises a mounting frame, a core anvil, a positioning mechanism and a pneumatic hammer; the mounting frame is provided with a force-dividing forging mechanism for changing the forging direction of the pneumatic hammer.

[0009] As a further solution of the present invention: the force-sharing forging mechanism includes a rotating seat, a mounting ring, a first linkage mechanism, a forging hammer and a second linkage mechanism; the rotating seat is mounted on a mounting frame, and the mounting ring is coaxially and rotatably connected to the outer side of the rotating seat; the mounting ring is connected to the output end of the pneumatic hammer through a first linkage mechanism, and the first linkage mechanism is used to cooperate with the pneumatic hammer to drive the mounting ring to rotate; a plurality of forging hammers are arranged at equal intervals along the circumferential direction of the rotating seat, and each of the forging hammers is connected to the rotating seat in a radially sliding manner along the rotating seat; a second linkage mechanism is provided between the forging hammer and the mounting ring, and the second linkage mechanism is used to cooperate with the rotation of the mounting ring to link the forging hammer to slide on the rotating seat.

[0010] As a further solution of the present invention: the first linkage mechanism includes a first connecting rod rotatably connected to the mounting ring and a rotating block rotatably connected to the first connecting rod, and the rotating block is connected to the output end of the pneumatic hammer.

[0011] As a further solution of the present invention: the second linkage mechanism includes a first mounting block, a rotating rod and a second connecting rod, multiple first mounting blocks are arranged on the inner wall of the mounting ring, the rotating rod is rotatably connected to the first mounting block through a pin shaft, a second mounting block is arranged at one end of the second connecting rod, the second mounting block is rotatably connected to the rotating rod through a pin shaft, and the other end of the second connecting rod is connected to the forging hammer.

[0012] As a further solution of the present invention: a buffer mechanism for buffering the impact force on the second connecting rod is provided on the second connecting rod, and the buffer mechanism includes an oil storage box, a piston, a pressure relief chamber, an oil outlet hole and an oil return hole. The oil storage box is arranged between the second connecting rod and the second mounting block, and one end of the second connecting rod is inserted into and extends into the interior of the oil storage box, the piston is slidably connected in the oil storage box, and the piston is connected to the second connecting rod; the pressure relief chamber is arranged on one side of the oil storage box, and an oil outlet hole and an oil return hole are provided between the pressure relief chamber and the oil storage box, and the oil storage box and the pressure relief chamber are connected through the oil outlet hole and the oil return hole; a spring is arranged in the oil storage box, one end of the spring is in contact with the piston, and the spring is used to drive the second connecting rod to move and reset.

[0013] As a further solution of the present invention: a cover plate is provided on the oil storage box, and the cover plate is sleeved on the second connecting rod. The cover plate is used to seal the oil storage box and provide guidance for the movement of the second connecting rod; the cover plate includes a protrusion and a guide sleeve, and a plurality of the protrusions are arranged inside the oil storage box. When the spring drives the second connecting rod to reset, the piston contacts the protrusion, and the side wall of the piston is misaligned with the oil return hole at this time; the guide sleeve is sleeved on the second connecting rod, and the guide sleeve is used to provide guidance for the movement of the second connecting rod.

[0014] As a further solution of the present invention: a lubrication mechanism is arranged between the rotating rod and the second connecting rod, and the lubrication mechanism includes a liquid storage chamber, a guide wheel and a receiving groove. The liquid storage chamber is opened inside the second mounting block, and a plurality of guide wheels are rotatably connected in the liquid storage chamber, and part of the side wall of the guide wheel protrudes from the second mounting block. A receiving groove is opened on the pin shaft of the rotating rod, and the receiving groove is used to accommodate the protruding part of the guide wheel.

[0015] As a further solution of the present invention: the lubrication mechanism also includes a through hole, a one-way valve and a pressure-storage sponge, the through hole is opened on the second mounting block, the through hole is connected to the liquid storage chamber, the one-way valve is arranged in the through hole, when the pressure in the liquid storage chamber is greater than the outside pressure, the one-way valve is used to keep the inside of the liquid storage chamber closed, when the pressure in the liquid storage chamber is less than the outside pressure, the one-way valve is opened to restore the pressure in the liquid storage chamber; the pressure-storage sponge is arranged in the liquid storage chamber, the pressure-storage sponge is in conflict with the guide wheel, and one side of the pressure-storage sponge is an arc structure, the arc structure is adapted to the outer wall of the guide wheel, and the guide wheel can slide in the liquid storage chamber while rotating in the liquid storage chamber, and the sliding direction of the guide wheel is perpendicular to the axis direction of the pin shaft on the rotating rod.

[0016] As a further solution of the present invention: an adjusting mechanism is arranged on the mounting frame, and the adjusting mechanism includes a first mounting plate, a cylinder, a connecting plate, an insert shaft and a second mounting plate; the first mounting plate is arranged on a rotating seat, and the rotating seat is rotatably connected to the mounting frame; the cylinder is mounted on the first mounting plate, the connecting plate is arranged on the output end of the cylinder, the insert shaft is arranged on the connecting plate, a first socket is provided on the first mounting plate, and the insert shaft is inserted into the first socket; a plurality of second sockets are provided on the mounting ring, a second mounting plate is provided on the mounting frame, and a third socket is provided on the second mounting plate; when a forging hammer is used to forge a steel pipe, the insert shaft is inserted into the first socket and the third socket, and when the position of the forging hammer to forge the steel pipe is adjusted, the insert shaft is inserted into the first socket and one of the second sockets.

[0017] As a further solution of the present invention: the core anvil is inserted into the steel pipe, and the core anvil is used to provide forging support for the inner wall of the steel pipe; the positioning mechanism is used to clamp and position the two ends of the steel pipe, and the positioning mechanism can push the steel pipe to move along the axial direction of the steel pipe; the pneumatic hammer is used to provide power for forging the steel pipe.

[0018] Beneficial effects of the present invention:

[0019] 1. By setting up a force-dividing forging mechanism, the kinetic energy provided by the pneumatic hammer is dispersed to the forging hammer. In the process of kinetic energy transmission, the forging work is realized while minimizing the kinetic energy loss, reducing the kinetic energy loss and ensuring the forging strength and accuracy;

[0020] 2. By setting and cooperating with the first linkage mechanism, the downward force applied by the pneumatic hammer is converted into a rotational force, which pushes the mounting ring to generate a larger torque, thereby providing a larger force for pushing the forging hammer to move, thereby ensuring the forging effect;

[0021] 3. By setting a buffer mechanism, the reverse force on the rotating rod and the second connecting rod is buffered to prevent the rotating rod and the second connecting rod from being deformed by force and affecting the next forging work;

[0022] 4. By setting a lubrication mechanism, lubrication is provided for the rotation between the rotating rod and the second connecting rod to reduce friction loss; at the same time, in order to ensure the stability of the force applied and the rotating rod when subjected to reverse force, the receiving groove is an arc-shaped structure rather than a circumferential groove, so that when the rotating rod pushes the second connecting rod to move and is forged by a forging hammer, the contact force-bearing surface between the pin on the rotating rod and the second mounting block is an arc-shaped surface opposite to the position of the receiving groove. When subjected to force, a larger surface contact is formed to ensure force stability;

[0023] 5. By setting up an adjustment mechanism to adjust the forging range of multiple forging hammers, the circumferential coverage of the steel pipe can be forged. By only adjusting the forging position of the forging hammer at a small angle, the circumferential coverage of the steel pipe can be achieved, thereby improving the forging efficiency and forging accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0026] Figure 2 is a schematic diagram of the three-dimensional structure of the present invention after removing the mounting frame;

[0027] Figure 3 It is a schematic diagram of the three-dimensional structure of the present invention after removing the mounting frame and the rotating seat;

[0028] Figure 4It is a three-dimensional enlarged schematic diagram of the structure of the buffer mechanism of the present invention;

[0029] Figure 5 It is a three-dimensional enlarged structural schematic diagram of the cover plate of the present invention;

[0030] Figure 6 It is a partially cutaway three-dimensional enlarged structural schematic diagram of the lubrication mechanism of the present invention;

[0031] Figure 7 It is a partially cutaway three-dimensional enlarged structural schematic diagram of the second mounting block of the present invention;

[0032] Figure 8 It is a schematic diagram of a three-dimensional enlarged structure of the rotating rod of the present invention;

[0033] Fig. 9 It is a three-dimensional enlarged structural schematic diagram of the regulating mechanism of the present invention;

[0034] Fig.10 It is a three-dimensional enlarged schematic diagram of the partial structure of the adjusting mechanism of the present invention.

[0035] In the figure: 1, mounting frame; 2, force-dividing forging mechanism; 21, rotating seat; 22, mounting ring; 23, first connecting rod; 24, rotating block; 25, forging hammer; 26, second linkage mechanism; 261, first mounting block; 262, rotating rod; 263, second connecting rod; 3, buffer mechanism; 31, oil storage box; 32, second mounting block; 33, piston; 34, spring; 35, cover plate; 351, raised portion; 352 , guide sleeve; 36, pressure relief chamber; 37, oil outlet hole; 38, oil return hole; 4, lubrication mechanism; 41, liquid storage chamber; 42, guide wheel; 43, accommodating groove; 44, through hole; 45, one-way valve; 46, pressure storage sponge; 5, adjustment mechanism; 51, first mounting plate; 52, cylinder; 53, connecting plate; 54, plug shaft; 55, first socket; 56, second socket; 57, second mounting plate; 58, third socket. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0037] like Figure 1-10As shown, a steel pipe forging device with a positioning mechanism includes a mounting frame 1, a core anvil, a positioning mechanism and a pneumatic hammer; the core anvil is inserted into the steel pipe, and the core anvil is used to provide forging support for the inner wall of the steel pipe; the positioning mechanism is used to clamp and position the two ends of the steel pipe, and the positioning mechanism can push the steel pipe to move along the axial direction of the steel pipe; the pneumatic hammer is used to provide power for forging the steel pipe; the core anvil, the positioning mechanism and the pneumatic hammer are all existing technologies, which are not shown in the figure and will not be described again; a force forging mechanism 2 for changing the forging direction of the pneumatic hammer is provided on the mounting frame 1.

[0038] It should be noted that when in use, the steel pipe is placed on the core anvil, the steel pipe is positioned by the positioning mechanism, and the steel pipe is pushed to move. At the same time, the pneumatic hammer is started, and the forging direction is changed by the force-dividing forging mechanism 2 to achieve the purpose of forging the outer wall of the steel pipe. By setting the force-dividing forging mechanism 2, the forging direction is changed by the connecting rod structure to achieve the forging of the outer wall of the steel pipe. The forging work is achieved while minimizing the kinetic energy loss, and the circumferential synchronous forging of the outer wall of the steel pipe force-dividing forging mechanism 2 is achieved to ensure the uniformity of the forging force and the forging position.

[0039] like Figure 1-2 As shown, the force-dividing forging mechanism 2 includes a rotating seat 21, a mounting ring 22, a first linkage mechanism, a forging hammer 25 and a second linkage mechanism 26; the rotating seat 21 is mounted on the mounting frame 1, and the mounting ring 22 is coaxially and rotatably connected to the outer side of the rotating seat 21; the mounting ring 22 is connected to the output end of the pneumatic hammer through the first linkage mechanism, and the first linkage mechanism is used to cooperate with the pneumatic hammer to drive the mounting ring 22 to rotate; a plurality of forging hammers 25 are arranged at equal intervals along the circumferential direction of the rotating seat 21, and each forging hammer 25 is connected to the rotating seat 21 in a radially sliding manner along the rotating seat 21; a second linkage mechanism 26 is provided between the forging hammer 25 and the mounting ring 22, and the second linkage mechanism 26 is used to cooperate with the rotation of the mounting ring 22 to link the forging hammer 25 to slide on the rotating seat 21.

[0040] It should be noted that when the mounting ring 22 is driven to rotate by the first linkage mechanism, the second linkage mechanism 26 is driven to move. At this time, the rotating seat 21 remains stationary, and then the forging hammer 25 is driven to approach the steel pipe through the second linkage mechanism 26, so as to achieve the purpose of forging the steel pipe, so that the downward force of the pneumatic hammer is dispersed into the force of multiple forging hammers 25 forging the outer wall of the steel pipe, so as to achieve the purpose of forging the steel pipe. Through the coordinated use of the first linkage mechanism and the second linkage mechanism 26, the kinetic energy loss is reduced while the outer wall of the steel pipe is forged, and the forging force is guaranteed.

[0041] like Figure 2As shown, it can be understood that the present application does not limit the specific structure and installation method of the first linkage mechanism. Only a specific structure is provided below for reference. The first linkage mechanism includes a first connecting rod 23 rotatably connected to the mounting ring 22 and a rotating block 24 rotatably connected to the first connecting rod 23. The rotating block 24 is connected to the output end of the pneumatic hammer.

[0042] It should be noted that when the pneumatic hammer moves downward, it pushes the rotating block 24 and the first connecting rod 23 connected to the rotating block 24 to move downward, thereby pushing the mounting ring 22 to rotate downward, and similarly driving multiple forging hammers 25 to collide and forge the outer wall of the steel pipe; in the process of the first connecting rod 23 moving downward, since the two ends of the first connecting rod 23 are respectively rotatably connected to the mounting ring 22 and the rotating block 24, the first connecting rod 23 will be affected by the rotation of the mounting ring 22 and deflected, but it will not affect the first connecting rod 23 pushing the mounting ring 22 to rotate downward; when the pneumatic hammer pushes the mounting ring 22 to rotate, although a part of the kinetic energy is lost through the inertia of the first linkage mechanism and the mounting ring 22, when pushing the mounting ring 22 to rotate, due to the large rotational inertia of the mounting ring 22, it can push the mounting ring 22 to generate a large torque, thereby providing a large force for pushing the forging hammer 25 to move, thereby ensuring the forging effect.

[0043] like Figure 2-3 As shown, the second linkage mechanism 26 includes a first mounting block 261, a rotating rod 262 and a second connecting rod 263. Multiple first mounting blocks 261 are arranged on the inner wall of the mounting ring 22. The rotating rod 262 is rotatably connected to the first mounting block 261 through a pin shaft. A second mounting block 32 is arranged at one end of the second connecting rod 263. The second mounting block 32 is rotatably connected to the rotating rod 262 through a pin shaft. The other end of the second connecting rod 263 is connected to the forging hammer 25. The second connecting rod 263 is slidably connected to the rotating seat 21.

[0044] It should be noted that when the installation ring 22 is pushed to rotate, the multiple first installation blocks 261 are driven to move simultaneously, and the second connecting rod 263 is pushed to slide on the rotating seat 21 by the first installation block 261, thereby driving the forging hammer 25 to approach the steel pipe to achieve the purpose of forging the outer wall of the steel pipe. The connecting rod structure is formed by the second linkage mechanism 26 to achieve the purpose of driving multiple forging hammers 25 to forge the outer wall of the steel pipe synchronously, thereby reducing the loss of forging force and improving the forging effect.

[0045] During the forging process of the steel pipe, since the steel pipe is arranged horizontally, in order to offset the influence of gravity on the forging hammer 25 at different positions and ensure the uniformity of the forging force, (such as Figure 3As shown in the figure, the rotating rod 262 at the bottom is the longest, the rotating rod 262 at the lower part is the second longest, the rotating rod 262 at the middle part is of moderate length, the rotating rod 262 at the upper part is shorter, and the rotating rod 262 at the top part is the shortest; the second connecting rod 263 is opposite to the rotating rod 262 at the corresponding position, that is, the second connecting rod 263 on the rotating rod 262 with the longest length at the lowest end is the shortest, and the same applies to the others; in this way, when the mounting ring 22 rotates, the forging hammer 25 can be driven to forge against the steel pipe at the same time, and the forging hammer 25 at the bottom has the longest movement displacement, and the forging hammer 25 at the top has the shortest movement displacement, and the speeds at which the multiple forging hammers 25 reach the side wall of the steel pipe are the same, so that when the forging hammer 25 is driven to move by the same force, the influence of gravity can be offset, so that the impact force of the multiple forging hammers 25 on the outer wall of the steel pipe is the same, the uniformity of the forging force is ensured, and the forging accuracy is improved.

[0046] like Figure 3-4 As shown, a buffer mechanism 3 for buffering the impact force on the second connecting rod 263 is provided on the second connecting rod 263, and the buffer mechanism 3 includes an oil storage box 31, a piston 33, a pressure relief chamber 36, an oil outlet hole 37 and an oil return hole 38. The oil storage box 31 is arranged between the second connecting rod 263 and the second mounting block 32, one end of the second connecting rod 263 is inserted and extended into the interior of the oil storage box 31, the piston 33 is slidably connected in the oil storage box 31, and the piston 33 is connected to the second connecting rod 263; the pressure relief chamber 36 is arranged on one side of the oil storage box 31, an oil outlet hole 37 and an oil return hole 38 are opened between the pressure relief chamber 36 and the oil storage box 31, and the oil storage box 31 and the pressure relief chamber 36 are connected through the oil outlet hole 37 and the oil return hole 38; a spring 34 is arranged in the oil storage box 31, one end of the spring 34 is in contact with the piston 33, and the spring 34 is used to drive the second connecting rod 263 to move and reset.

[0047] It should be noted that, since a large force needs to be applied during the forging process to deform the steel pipe, when the forging hammer 25 impacts the steel pipe, the reverse force on the forging hammer 25 is also large. In order to reduce the influence of the reverse force on the second linkage mechanism 26 and prevent the rotating rod 262 and the second connecting rod 263 from bending and deforming due to the force, a buffer mechanism 3 is provided for protection;

[0048] During use, when the reverse force pushes the forging hammer 25 to move, the piston 33 on the rotating rod 262 is driven to move, so that the piston 33 squeezes the pressure relief oil in the oil storage box 31, and the pressure relief oil is discharged into the pressure relief chamber 36 through the oil outlet hole 37. The pressure is relieved by the flow of the pressure relief oil, which offsets part of the thrust and achieves a buffering effect; as the piston 33 continues to squeeze, the pressure relief oil in the pressure relief chamber 36 is introduced back into the oil storage box 31 through the oil return hole 38, and after the pressure relief is completed, the piston 33 is driven to reset under the action of the spring 34. At this time, the piston 33 squeezes the pressure relief oil upward, so that the pressure relief oil returns to the pressure relief chamber 36 from the oil return hole 38, and then returns to the oil storage box 31 from the oil outlet hole 37, so that automatic reset is achieved, which is convenient for the next pressure relief work.

[0049] like Figure 4-5 As shown, a cover plate 35 is provided on the oil storage box 31, and the cover plate 35 is sleeved on the second connecting rod 263. The cover plate 35 is used to seal the oil storage box 31 and provide guidance for the movement of the second connecting rod 263; the cover plate 35 includes a protrusion 351 and a guide sleeve 352, and multiple protrusions 351 are arranged inside the oil storage box 31. When the spring 34 drives the second connecting rod 263 to reset, the piston 33 contacts the protrusion 351, and at this time, the side wall of the piston 33 is misaligned with the oil return hole 38; the guide sleeve 352 is sleeved on the second connecting rod 263, and the guide sleeve 352 is used to provide guidance for the movement of the second connecting rod 263.

[0050] It should be noted that, through the setting of the protrusion 351, there is a certain gap space between the piston 33 and the cover plate 35. At this time, the return oil hole 38 is connected to the gap space, and the piston 33 will not block the return oil hole 38, which is beneficial for the pressure relief oil to be introduced to the top of the piston 33 through the return oil hole 38 during pressure relief, which is beneficial for pressure relief; through the setting of the guide sleeve 352, a guide is provided for the movement of the second connecting rod 263 to prevent the second connecting rod 263 from deflecting during the movement, thereby improving the pressure relief stability.

[0051] like Figure 3 and 6 As shown in FIG. 8 , a lubrication mechanism 4 is provided between the rotating rod 262 and the second connecting rod 263. The lubrication mechanism 4 includes a liquid storage chamber 41, a guide wheel 42 and a receiving groove 43. The liquid storage chamber 41 is provided on the second mounting block 32 (as shown in FIG. Figure 4 As shown in the figure, multiple guide wheels 42 are rotatably connected to the liquid storage chamber 41, and part of the side wall of the guide wheel 42 protrudes from the second mounting block 32. A receiving groove 43 is opened on the pin shaft of the rotating rod 262, and the receiving groove 43 is used to accommodate the protruding part of the guide wheel 42.

[0052] It should be noted that when the angle between the rotating rod 262 and the second connecting rod 263 is small, the guide wheel 42 is in the receiving groove 43, and only a part of the pin of the rotating rod 262 is in conflict with the second mounting block 32, thereby reducing the friction surface with the second mounting block 32 and reducing friction loss; when the rotating rod 262 pushes the second connecting rod 263 to move, the pin on the rotating rod 262 rotates, so that the receiving groove 43 moves, so that the part of the rotating rod 262 that is in conflict with the second mounting block 32 rotates and moves to conflict with the guide wheel 42, and the guide wheel 42 rotates with the rotation of the pin, thereby forming rolling friction, further reducing friction loss;

[0053] In order to reduce the shaking between the pin shaft on the rotating rod 262 and the second mounting block 32 during the rotation, the receiving groove 43 is only provided on the outer wall of the middle position of the pin shaft on the rotating rod 262, and the second mounting block 32 and the two ends of the pin shaft on the rotating rod 262 are complete cylindrical structures, so that the shaking problem during the rotation will not be caused by the provision of the receiving groove 43;

[0054] In order to ensure the stability of the force applied and the rotating rod 262 when subjected to reverse force, the accommodating groove 43 is an arc-shaped structure rather than a circumferential groove, so that when the rotating rod 262 pushes the second connecting rod 263 to move and is forged by the forging hammer 25, the contact force-bearing surface between the pin shaft on the rotating rod 262 and the second mounting block 32 is an arc-shaped surface opposite to the accommodating groove 43. When subjected to force, a larger surface contact is formed to ensure force stability.

[0055] like Figure 6-7 As shown, the lubrication mechanism 4 also includes a through hole 44, a one-way valve 45 and a pressure-storage sponge 46. The through hole 44 is opened on the second mounting block 32, and the through hole 44 is connected to the liquid storage chamber 41. The one-way valve 45 is arranged in the through hole 44. When the pressure in the liquid storage chamber 41 is greater than the outside pressure, the one-way valve 45 is used to keep the inside of the liquid storage chamber 41 closed. When the pressure in the liquid storage chamber 41 is less than the outside pressure, the one-way valve 45 is opened to restore the pressure in the liquid storage chamber 41. The pressure-storage sponge 46 is arranged in the liquid storage chamber 41, and the pressure-storage sponge 46 conflicts with the guide wheel 42, and one side of the pressure-storage sponge 46 is an arc structure, which is adapted to the outer wall of the guide wheel 42. When the guide wheel 42 rotates in the liquid storage chamber 41, the guide wheel 42 can slide in the liquid storage chamber 41, and the sliding direction of the guide wheel 42 is perpendicular to the axis direction of the pin shaft on the rotating rod 262.

[0056] It should be noted that when the guide wheel 42 moves from the force-bearing surface in the accommodating groove 43, that is, moves from the inner concave part to the convex part, the guide wheel 42 is forced to move, causing compression of the pressure storage sponge 46. At this time, as the guide wheel 42 moves, the space in the liquid storage chamber 41 is compressed, so that the lubricating oil in the liquid storage chamber 41 is squeezed from the gap between the guide wheel 42 and the liquid storage chamber 41 to between the second mounting block 32 and the pin on the rotating rod 262, providing lubrication for the rotation between the rotating rod 262 and the second connecting rod 263, further reducing friction loss;

[0057] When the guide wheel 42 moves back into the receiving groove 43, the squeezed pressure storage sponge 46 is reset, pushing the guide wheel 42 to reset. At this time, the reset of the guide wheel 42 reduces the pressure in the liquid storage chamber 41, generates suction, and then opens the one-way valve 45, so that the pressure in the liquid storage chamber 41 is restored, so that the lubricating oil can be squeezed out when the guide wheel 42 is squeezed next time, thereby achieving a continuous effect of reducing friction.

[0058] During the use of the pressure-accumulating sponge 46, not only can the elasticity of the pressure-accumulating sponge 46 be utilized to drive the guide wheel 42 to reset, but the pressure-accumulating sponge 46 has a porous structure and can absorb the moving lubricating oil, thereby ensuring that an appropriate amount of lubricating oil is present at the position of each guide wheel 42, thereby facilitating the extrusion of the guide wheel 42 and ensuring a continuous lubrication effect.

[0059] like Figure 1 and 9 As shown in -10, the mounting frame 1 is provided with an adjustment mechanism 5, which includes a first mounting plate 51, a cylinder 52, a connecting plate 53, an insert shaft 54 ​​and a second mounting plate 57. The first mounting plate 51 is arranged on the rotating seat 21, and the rotating seat 21 is rotatably connected to the mounting frame 1. The cylinder 52 is installed on the first mounting plate 51, the connecting plate 53 is arranged at the output end of the cylinder 52, and the insert shaft 54 ​​is arranged on the connecting plate 53. The first mounting plate 51 is provided with a first plug hole 55, and the plug shaft 54 ​​is inserted Connected to the first socket 55; a plurality of second sockets 56 are provided on the mounting ring 22, a second mounting plate 57 is provided on the mounting frame 1, a plurality of third sockets 58 are provided on the second mounting plate 57, and the positions of the second sockets 56 and the third sockets 58 correspond to each other; when the forging hammer 25 is used to forge the steel pipe, the plug shaft 54 ​​is plugged into the first socket 55 and the third socket 58, and when the forging hammer 25 is adjusted to forge the steel pipe position, the plug shaft 54 ​​is plugged into the first socket 55 and one of the second sockets 56.

[0060] It should be noted that, in order to ensure that the multiple forging hammers 25 can cover the circumference of the steel pipe, an adjustment mechanism 5 is provided to adjust the multiple forging hammers 25 to rotate a certain angle along the circumference of the steel pipe, and then forge, so as to achieve full forging covering the circumference of the steel pipe;

[0061] The connecting plate 53 is driven to move by the cylinder 52, and the plug shaft 54 ​​is driven to move by the connecting plate 53, so that one end of the plug shaft 54 ​​is separated from the third plug hole 58, and the other end of the plug shaft 54 ​​is plugged into the second plug hole 56, and then the mounting ring 22 is driven to rotate upward by the pneumatic hammer. Since the plug shaft 54 ​​is plugged into the first plug hole 55 and the second plug hole 56, the rotating seat 21 rotates synchronously with the mounting ring 22, thereby driving the multiple forging hammers 25 to rotate, adjusting the forging position of the forging hammers 25, and then the connecting plate 53 is driven by the cylinder 52 to move in the opposite direction, thereby driving the plug shaft 54 ​​and the third plug hole 58 to move upward. The second socket 56 is separated, and at the same time, the other end of the plug shaft 54 ​​is plugged into another third socket 58. At this time, the plug shaft 54 ​​is still plugged into the first socket 55, so that the rotating seat 21 is locked. At this time, the mounting ring 22 can be driven by a pneumatic hammer to rotate downward, so as to drive multiple forging hammers 25 to forge another position on the outer wall of the steel pipe, thereby achieving the purpose of adjusting the forging position of the forging hammer 25. Since multiple forging hammers 25 are provided, it is only necessary to adjust the forging position of the forging hammer 25 at a small angle to achieve the forging work of fully covering the circumference of the steel pipe, thereby improving the forging efficiency and forging accuracy.

[0062] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0063] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0064] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A steel pipe forging device with a positioning mechanism, comprising a mounting frame (1), a core anvil, a positioning mechanism and a pneumatic hammer; characterized in that: The mounting frame (1) is provided with a force-dividing forging mechanism (2) for changing the forging direction of the pneumatic hammer.

2. A steel pipe forging device with a positioning mechanism according to claim 1, characterized in that: The force-sharing forging mechanism (2) comprises a rotating seat (21), a mounting ring (22), a first linkage mechanism, a forging hammer (25) and a second linkage mechanism (26); the rotating seat (21) is mounted on the mounting frame (1), and the mounting ring (22) is coaxially and rotatably connected to the outer side of the rotating seat (21); the mounting ring (22) is connected to the output end of the pneumatic hammer through the first linkage mechanism, and the first linkage mechanism is used to cooperate with the pneumatic hammer to drive the mounting ring (22) to rotate; a plurality of forging hammers (25) are arranged at equal intervals along the circumferential direction of the rotating seat (21), and each of the forging hammers (25) is connected to the rotating seat (21) in a radially sliding manner along the rotating seat (21); a second linkage mechanism (26) is provided between the forging hammer (25) and the mounting ring (22), and the second linkage mechanism (26) is used to cooperate with the mounting ring (22) to rotate and link the forging hammer (25) to slide on the rotating seat (21).

3. A steel pipe forging device with a positioning mechanism according to claim 2, characterized in that: The first linkage mechanism comprises a first connecting rod (23) rotatably connected to the mounting ring (22) and a rotating block (24) rotatably connected to the first connecting rod (23); the rotating block (24) is connected to the output end of the pneumatic hammer.

4. A steel pipe forging device with a positioning mechanism according to claim 2, characterized in that: The second linkage mechanism (26) comprises a first mounting block (261), a rotating rod (262) and a second connecting rod (263); a plurality of the first mounting blocks (261) are arranged on the inner wall of the mounting ring (22); the rotating rod (262) is rotatably connected to the first mounting block (261) via a pin shaft; a second mounting block (32) is arranged at one end of the second connecting rod (263); the second mounting block (32) is rotatably connected to the rotating rod (262) via a pin shaft; and the other end of the second connecting rod (263) is connected to the forging hammer (25).

5. A steel pipe forging device with a positioning mechanism according to claim 4, characterized in that: The second connecting rod (263) is provided with a buffer mechanism (3) for buffering the impact force on the second connecting rod (263), and the buffer mechanism (3) comprises an oil storage box (31), a piston (33), a pressure relief chamber (36), an oil outlet hole (37) and an oil return hole (38); the oil storage box (31) is arranged between the second connecting rod (263) and the second mounting block (32), one end of the second connecting rod (263) is inserted into and extends into the interior of the oil storage box (31), the piston (33) is slidably connected in the oil storage box (31), and the movable The plug (33) is connected to the second connecting rod (263); the pressure relief chamber (36) is arranged on one side of the oil storage box (31); an oil outlet hole (37) and an oil return hole (38) are provided between the pressure relief chamber (36) and the oil storage box (31); the oil storage box (31) and the pressure relief chamber (36) are connected through the oil outlet hole (37) and the oil return hole (38); a spring (34) is arranged in the oil storage box (31); one end of the spring (34) is in contact with the piston (33); the spring (34) is used to drive the second connecting rod (263) to move and reset.

6. A steel pipe forging device with a positioning mechanism according to claim 5, characterized in that: The oil storage box (31) is provided with a cover plate (35), the cover plate (35) is sleeved on the second connecting rod (263), the cover plate (35) is used to seal the oil storage box (31) and provide guidance for the movement of the second connecting rod (263); the cover plate (35) comprises a protrusion (351) and a guide sleeve (352), a plurality of the protrusions (351) are arranged inside the oil storage box (31), when the spring (34) drives the second connecting rod (263) to reset, the piston (33) contacts the protrusion (351), at which time the side wall of the piston (33) is misaligned with the oil return hole (38); the guide sleeve (352) is sleeved on the second connecting rod (263), the guide sleeve (352) is used to provide guidance for the movement of the second connecting rod (263).

7. A steel pipe forging device with a positioning mechanism according to claim 4, characterized in that: A lubrication mechanism (4) is provided between the rotating rod (262) and the second connecting rod (263), and the lubrication mechanism (4) comprises a liquid storage chamber (41), a guide wheel (42) and a receiving groove (43); the liquid storage chamber (41) is opened inside the second mounting block (32), a plurality of guide wheels (42) are rotatably connected in the liquid storage chamber (41), and part of the side wall of the guide wheel (42) protrudes from the second mounting block (32); a receiving groove (43) is provided on the pin shaft of the rotating rod (262), and the receiving groove (43) is used to receive the protruding part of the guide wheel (42).

8. A steel pipe forging device with a positioning mechanism according to claim 7, characterized in that: The lubricating mechanism (4) further comprises a through hole (44), a one-way valve (45) and a pressure accumulating sponge (46); the through hole (44) is formed on the second mounting block (32), the through hole (44) is communicated with the liquid storage chamber (41), the one-way valve (45) is arranged in the through hole (44), when the pressure in the liquid storage chamber (41) is greater than that in the outside, the one-way valve (45) is used to keep the inside of the liquid storage chamber (41) closed, and when the pressure in the liquid storage chamber (41) is less than that in the outside, the one-way valve (45) is opened to allow the liquid storage chamber (41) to flow into the liquid storage chamber (41). The pressure in the cavity (41) is restored; the pressure storage sponge (46) is arranged in the liquid storage cavity (41), the pressure storage sponge (46) is in conflict with the guide wheel (42), and one side of the pressure storage sponge (46) is an arc structure, the arc structure is adapted to the outer wall of the guide wheel (42), and the guide wheel (42) can slide in the liquid storage cavity (41) while rotating in the liquid storage cavity (41), and the sliding direction of the guide wheel (42) is perpendicular to the axis direction of the pin shaft on the rotating rod (262).

9. A steel pipe forging device with a positioning mechanism according to claim 2, characterized in that: The mounting frame (1) is provided with an adjustment mechanism (5), and the adjustment mechanism (5) comprises a first mounting plate (51), a cylinder (52), a connecting plate (53), an insertion shaft (54) and a second mounting plate (57); the first mounting plate (51) is arranged on a rotating seat (21), the rotating seat (21) is rotatably connected to the mounting frame (1), the first mounting plate (51) is provided with a cylinder (52), the connecting plate (53) is provided at an output end of the cylinder (52), the insertion shaft (54) is provided on the connecting plate (53), and the first mounting plate (51) is provided with a plurality of holes. A first plug hole (55) is provided, and the plug shaft (54) is plugged into the first plug hole (55); a plurality of second plug holes (56) are provided on the mounting ring (22); a second mounting plate (57) is provided on the mounting frame (1), and a third plug hole (58) is provided on the second mounting plate (57); when a forging hammer (25) is used to forge a steel pipe, the plug shaft (54) is plugged into the first plug hole (55) and the third plug hole (58); when the forging hammer (25) is adjusted to forge the steel pipe, the plug shaft (54) is plugged into the first plug hole (55) and one of the second plug holes (56).

10. The steel pipe forging device with a positioning mechanism according to claim 1, characterized in that: The core anvil is inserted into the steel pipe, and the core anvil is used to provide forging support for the inner wall of the steel pipe; the positioning mechanism is used to clamp and position the two ends of the steel pipe, and the positioning mechanism can push the steel pipe to move along the axial direction of the steel pipe; the pneumatic hammer is used to provide power for forging the steel pipe.

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