Metal bent pipe shearing device for hardware product manufacturing

Abstract

The invention discloses a metal bent pipe shearing device for hardware product manufacturing, and belongs to the technical field of hardware product manufacturing, the metal bent pipe shearing device comprises a shell and a three-jaw chuck, and further comprises a rotating rod, a rotating plate, a shell sleeve, two rotating wheels, a shearing machine, a vertical plate, a pressure spring, a pushing rod and a driving mechanism, and the center line of the vertical plate can be kept perpendicular to the circle center connecting line between the two rotating wheels all the time, the shearing machine is slidably connected to the upper portion of the vertical plate, and the sliding direction of the shearing machine is the same as the direction of the center line of the vertical plate. The metal elbow shearing device has the advantages of being simple in structure and capable of guaranteeing that the shearing faces are flat and smooth when hardware metal elbows with different radians are sheared, and the problems that an existing metal elbow shearing device cannot shear the hardware metal elbows with different radians, the shearing direction cannot be accurately determined, the shearing faces of the metal elbows incline, and the shearing efficiency is high are solved. The flatness and the smoothness are not enough.

Description

Technical Field

[0001] The invention belongs to the technical field of hardware product manufacturing, and in particular relates to a metal pipe bending and shearing device for hardware product manufacturing. Background Art

[0002] Hardware metal pipe bending and shearing is an important metal processing technology, which is widely used in the fields of industry, construction, automobile, aerospace, etc. Hardware metal pipe bending and shearing mainly involves the precise shearing and processing of metal pipe bends to meet specific design and use requirements. Metal pipe bends are often used in various piping systems due to their flexibility in spatial layout, such as water supply and drainage systems, oil and gas pipelines, automobile exhaust pipes, etc.

[0003] When shearing the hardware metal pipe bends, it is usually necessary to shear the hardware metal pipe bends into different sizes of bends to facilitate the subsequent use of the hardware metal pipe bends. In the process of shearing the hardware metal pipe bends, the flatness of the end face depends on the shearing effect of the shearing device. Although the end face of the hardware metal pipe bend is uneven after shearing, it can be polished by a grinder. However, if the hardware metal pipe bend is directly sheared flat and smooth, the amount of grinding on the sheared end face of the hardware metal pipe bend can be effectively reduced, thereby improving the use effect of the hardware metal pipe bend. The reason why the current hardware metal pipe bending shearing device cannot directly shear the hardware metal pipe bending smoothly is that the curvatures of different hardware metal pipe bendings are different. For a hardware metal pipe bending with a single curvature, it has only one arc center. Therefore, when shearing, it only needs to determine the arc center in advance to ensure that the shearing machine shears along a straight line passing through this point, thereby ensuring that the shearing surface of the hardware metal pipe bending is smooth and flat. For hardware metal pipe bending with different curvatures, the arc center will change with the change of the curvature, which will cause the arc center to be unable to be determined, and then the shearing machine will be unable to accurately shear the hardware metal pipe bending along a straight line passing through the arc center of the metal pipe bending. The shearing machine's moving straight line does not intersect with the arc center of the metal pipe bending, which will cause the shearing end face of the hardware metal pipe bending to be tilted and cannot achieve high flatness and smoothness, so that the shearing device cannot have a good use and shearing effect. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides a metal pipe bending and shearing device for hardware product manufacturing, which has the advantages of being able to accurately shear hardware metal pipe bends with different curvatures and ensuring that the shearing surface is flat and smooth when shearing hardware metal pipe bends with different curvatures. It solves the problem that the existing metal pipe bending and shearing device cannot shear hardware metal pipe bends with different curvatures, and cannot accurately determine the shearing direction during shearing, resulting in the shearing surface of the hardware metal pipe bend being tilted, and cannot ensure that the shearing surface is flat and smooth.

[0005] The present invention is implemented in this way. A metal pipe bending and shearing device for hardware product manufacturing includes a shell and a three-jaw chuck, the three-jaw chuck is fixedly connected to the top of the shell, and also includes a rotating rod, a rotating plate, a shell sleeve, two rotating wheels, a shearing machine, a vertical plate, a pressure spring, a pushing rod and a driving mechanism. One end of the rotating rod is rotatably connected to the inside of the shell, a rotating groove is opened on the top of the shell, the other end of the rotating rod passes through the rotating groove and extends to the top of the shell, the rotating plate is fixedly connected to the top of one end of the rotating rod located outside the shell, the shell sleeve is fixedly connected to the top of the rotating plate, and the two rotating The wheels are rotatably connected to one end of the push rod, and the other end of the push rod is slidably inserted in the shell. The driving mechanism is arranged on the outside of the shell, which can drive the push rod to perform telescopic movement and lock the push rod. The pressure spring is sleeved on the outside of the push rod, and the two ends are respectively fitted with the rotating wheel and the surface of the shell. The vertical plate is arranged below the two rotating wheels, and the center line of the vertical plate can always remain perpendicular to the center line of the two rotating wheels. The shearing machine is slidably connected above the vertical plate, and the sliding direction is the same as the direction of the center line of the vertical plate.

[0006] As a preferred embodiment of the present invention, the driving mechanism includes a driving component and a locking component, the driving component includes a first driving motor, a first lead screw and a driving plate, the first driving motor is fixedly connected to the top of the rotating plate, the first lead screw is located in the shell sleeve, the output end of the first driving motor extends to the inside of the shell sleeve and is fixedly connected to the first lead screw, the driving plate is slidably connected to the inside of the shell sleeve, and a first threaded hole and a through hole are opened above the driving plate, the first lead screw is threadedly connected to the first threaded hole, the end of the pushing rod away from the rotating wheel is slidably inserted into the through hole, and is restricted by the protrusion at the end of the pushing rod to slide from the side of the driving plate away from the rotating wheel to the side of the driving plate close to the rotating wheel.

[0007] As a preferred embodiment of the present invention, the locking assembly includes a cylinder and a block, the cylinder is fixedly connected to the top of the shell, the block is located in the shell, and it is located on the side of the drive plate close to the rotating wheel, the output end of the cylinder extends to the inside of the shell and is fixedly connected to the block, and teeth are provided below the block and above the push rod, and the block can lock the push rod through the teeth.

[0008] As a preferred embodiment of the present invention, it also includes two tangent rods and a tension spring, the two tangent rods are respectively rotatably connected to the center of the circle below the rotating wheel, the vertical plate is provided with a mounting groove horizontally perpendicular to the center line of the vertical plate, the two tangent rods are respectively slid from the openings on both sides of the mounting groove and are clamped in the mounting groove, the tension spring is accommodated in the mounting groove, and the two ends are respectively fixedly connected to the ends of the two tangent rods.

[0009] As a preferred embodiment of the present invention, it also includes a sliding wheel, a sliding groove is opened on the rotating plate, the sliding wheel is slidably and rotatably connected in the sliding groove, and the vertical plate is rotatably connected above the sliding wheel.

[0010] As a preferred embodiment of the present invention, it also includes a second drive motor and a second screw, the second drive motor is fixedly connected to an end of the vertical plate away from the rotating wheel, the second screw is fixedly connected to the output end of the second drive motor, a second threaded hole is opened above the shearing machine, and the second screw is threadedly connected to the second threaded hole.

[0011] As a preferred embodiment of the present invention, it also includes a third drive motor, a mounting plate, a first gear and a second gear, the mounting plate and the third drive motor are fixedly connected to the inside of the shell, the first gear and the second gear are rotatably connected above the mounting plate, the output end of the third drive motor is fixedly connected to the first gear, the first gear and the second gear are meshed, and one end of the rotating rod located in the shell is fixedly connected above the second gear.

[0012] Compared with the prior art, the present invention has the following beneficial effects: In the initial state of the present invention, the pressure spring is in a natural state, and the push rod and the rotating wheel are extended to the maximum position. When it is necessary to shear the hardware metal bent pipe, the driving mechanism is first started, and the driving mechanism drives the push rod and the rotating wheel to shrink into the shell, and the pressure spring is compressed at the same time. When the pressure spring reaches the limit position, the driving mechanism stops, and the push rod and the rotating wheel are in the minimum extension position. At this time, the hardware metal bent pipe is placed in a three-jaw chuck and fixed to ensure horizontality. Subsequently, the driving mechanism is reversely started to reset it. Under the action of the reset force of the pressure spring, the push rod slowly extends to the outside of the shell, driving the rotating wheel to approach the arc surface of the metal bent pipe. Regardless of whether the two rotating wheels are in contact with the arc surface at the same time, the first rotating wheel in contact will fit the arc surface tightly, and the other will continue to reset with the driving mechanism until it fits. When both rotating wheels fit with the arc surface, the line between their centers is parallel to the tangent of the arc surface, and the vertical plate is perpendicular to this line, thereby determining the center position of the arc surface. Adjust the rotating plate and the rotating rod to determine the shearing position. During this process, the position and direction of the line connecting the centers of the two rotating wheels will change with the rotation of the rotating plate and the rotating rod, but the vertical plate always intersects with the center of the arc surface. Due to the different positions of the center of the metal bends with different curvatures, the rotation diameter of the rotating wheel and the push rod at the minimum extension position must be large enough to accommodate large-curvature metal bends. After determining the shearing position, the drive mechanism locks the push rod to prevent the rotating wheel from changing the direction of the vertical plate. Then, the shearing machine is pushed to slide along the center line of the vertical plate to shear the metal bend. After the shearing is completed, the shearing machine is reset to the initial position. During the whole process, the propulsion amount of the shearing machine needs to be precisely controlled to avoid collision with other components. This setting determines the optimal shearing direction according to the different curvatures of the metal bends through the cooperation of the two rotating wheels and the vertical plate, which improves the applicability and shearing effect of the equipment, while ensuring the flatness and smoothness of the cut surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram provided by an embodiment of the present invention; Figure 2 The embodiment of the present invention provides Figure 1 A partial enlarged view of the middle A; Figure 3 is another perspective structure schematic diagram provided by an embodiment of the present invention; Figure 4 is a schematic diagram of the internal structure of a housing provided by an embodiment of the present invention; Figure 5 The embodiment of the present invention provides Figure 4 A partial enlarged view of point B in the middle; Figure 6 is a schematic diagram of the coordination structure of a third drive motor provided in an embodiment of the present invention; Figure 7 is a schematic diagram of the internal structure of a housing provided by an embodiment of the present invention; Figure 8 The embodiment of the present invention provides Figure 7 A partial enlarged view of point C in the middle; Fig. 9 is a schematic diagram of the internal structure of another viewing angle housing provided by an embodiment of the present invention; Fig.10 The embodiment of the present invention provides Fig. 9 A partial enlarged view of point D in the middle; Fig.11 is a schematic diagram of the matching structure of the driving plate provided in an embodiment of the present invention; Fig.12 is a schematic diagram of the vertical plate matching structure provided by an embodiment of the present invention; Fig.13 The embodiment of the present invention provides Fig.12 A partial enlarged view of point E in the middle.

[0014] In the figure: 1. housing; 2. three-jaw chuck; 3. rotating rod; 4. rotating plate; 5. shell; 6. rotating wheel; 7. shearing machine; 8. vertical plate; 9. pressure spring; 10. push rod; 11. first drive motor; 12. first lead screw; 13. drive plate; 14. cylinder; 15. block; 16. tangent rod; 17. tension spring; 18. sliding wheel; 19. second drive motor; 20. second lead screw; 21. third drive motor; 22. mounting plate; 23. first gear; 24. second gear. DETAILED DESCRIPTION

[0015] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0016] The structure of the present invention is described in detail below in conjunction with the accompanying drawings.

[0017] refer to Figures 1 to 13, a metal pipe bending and shearing device for hardware product manufacturing provided by an embodiment of the present invention comprises a shell 1 and a three-jaw chuck 2, the three-jaw chuck 2 is fixedly connected to the top of the shell 1, and also comprises a rotating rod 3, a rotating plate 4, a shell sleeve 5, two rotating wheels 6, a shearing machine 7, a vertical plate 8, a pressure spring 9, a pushing rod 10 and a driving mechanism, one end of the rotating rod 3 is rotatably connected to the inside of the shell 1, a rotating groove is opened on the top of the shell 1, the other end of the rotating rod 3 passes through the rotating groove and extends to the top of the shell 1, the rotating plate 4 is fixedly connected to the top of one end of the rotating rod 3 located outside the shell 1, the shell sleeve 5 is fixedly connected to the top of the rotating plate 4, and the two rotating The wheels 6 are rotatably connected to one end of the push rod 10, and the other end of the push rod 10 is slidably inserted into the shell 5. The driving mechanism is arranged on the outside of the shell 5, which can drive the push rod 10 to perform telescopic movement and lock the push rod 10. The pressure spring 9 is sleeved on the outside of the push rod 10, and the two ends are respectively fitted with the rotating wheel 6 and the surface of the shell 5. The vertical plate 8 is arranged below the two rotating wheels 6, and the center line of the vertical plate 8 can always remain perpendicular to the center line of the two rotating wheels 6. The shearing machine 7 is slidably connected above the vertical plate 8, and the sliding direction is the same as the direction of the center line of the vertical plate 8.

[0018] When in use, in the initial state, the pressure spring 9 is in a stress-free state, and the push rod 10 and the rotating wheel 6 are in the maximum extension position. When the hardware metal bent pipe needs to be sheared, the driving mechanism is first started, and the driving mechanism will drive the push rod 10 to drive the rotating wheel 6 to retract into the shell 5. At the same time, the pressure spring 9 is gradually compressed. When the pressure spring 9 is compressed to the limit position, the driving mechanism stops driving the push rod 10 to drive the rotating wheel 6 to retract, and maintains the current state and no longer moves. The push rod 10 and the rotating wheel 6 reach the minimum extension position, and then the hardware metal bent pipe is passed through the three-jaw chuck 2 for clamping, and its level is ensured, and then the driving mechanism is started again to reset it in the reverse direction. At this time, the push rod 10 is not driven by the driving mechanism, and its It will be extended to the outside of the shell 5 by the restoring force of the pressure spring 9 sleeved on its outside, so that the rotating wheel 6 slowly approaches the arc surface of the metal elbow. In this process, the driving mechanism will limit the instantaneous pop-up of the push rod 10, so that the push rod 10 is slowly reset by the restoring force of the pressure spring 9 as the driving mechanism is reset. Under normal circumstances, one of the two rotating wheels 6 will fit with the arc surface first, but at a specific angle, the two rotating wheels 6 will contact the arc surface at the same time. However, no matter whether the two rotating wheels 6 fit with the arc surface at the same time, because the driving mechanism no longer has a driving effect on the push rod 10 at this time, when the first rotating wheel 6 contacts the arc surface, it will only be tightly fitted with the arc surface due to the restoring force of the pressure spring 9, while the other rotating wheel 6 Then, as the driving mechanism is reset, it will continue to approach the arc surface under the push of the pressure spring 9 until it is tightly fitted with the arc surface. When the two rotating wheels 6 are in fit with the arc surface, in the plane state, because the two rotating wheels 6 are respectively in fit with different positions of the arc surface, the line between the centers of the two rotating wheels 6 must be parallel to two tangents of the arc surface. Because the vertical plate 8 can always remain perpendicular to the line between the two rotating wheels 6 in the upper plane state, the vertical plate 8 is also perpendicular to the tangent of the arc surface. Therefore, it can be determined that the straight line position of the vertical plate 8 at this time must pass through the center of the arc surface. When the driving mechanism is reset, the rotating plate 4 is pushed to drive the rotating rod 3 to rotate, thereby adjusting the shearing position, and then shearing out the full The metal bending pipe that meets the needs, in this process, the position and direction of the line between the centers of the two rotating wheels 6 will change with the rotation of the rotating plate 4 and the rotating rod 3. At this time, the vertical plate 8 will also change its angle accordingly following the movement of the two rotating wheels 6, but it is always guaranteed that the straight line where it is located intersects with the center of the arc surface. At the same time, because the center positions of metal bending pipes with different curvatures are different, and the rotation centers of the rotating rod 3 and the rotating plate 4 are fixed, the rotating diameter of the rotating wheel 6 and the pushing rod 10 following the rotating rod 3 and the rotating plate 4 when they are in the minimum extension position needs to be much larger than the diameter of the metal bending pipe with the maximum curvature that the equipment can process, thereby ensuring that the rotating rod 3 and the rotating plate 4 can also rotate normally when dealing with large-curvature metal bending pipes. When the shearing position is determined,At this time, the two rotating wheels 6 synchronously determine the direction of the vertical plate 8, and then the driving mechanism will lock the push rod 10, thereby preventing the rotating wheel 6 from being subjected to external force to change the direction of the vertical plate 8, avoiding affecting the shearing effect of the equipment. When the push rod 10 is completely locked, the shearing machine 7 is pushed to slide along the direction of the center line of the vertical plate 8, so as to slowly slide to the hardware metal bend to shear the metal bend. When the metal bend is cut off, the shearing machine 7 can be pushed to reset. During this process, the shearing machine 7 only needs to move to the position where the metal bend can be cut off, and cannot be pushed excessively, thereby preventing the shearing machine 7 from colliding with other components. Through this setting, the cooperation between the two rotating wheels 6 and the vertical plate 8 can be used to determine the most ideal shearing direction according to the different curvatures of the metal bend, thereby improving the applicability and shearing effect of the equipment, as well as the flatness and smoothness of the cut surface.

[0019] Furthermore, the driving mechanism includes a driving component and a locking component, and the driving component includes a first driving motor 11, a first lead screw 12 and a driving plate 13. The first driving motor 11 is fixedly connected to the top of the rotating plate 4, and the first lead screw 12 is located in the shell 5. The output end of the first driving motor 11 extends to the inside of the shell 5 and is fixedly connected to the first lead screw 12. The driving plate 13 is slidably connected to the inside of the shell 5, and a first threaded hole and a through hole are opened on the top of the driving plate 13. The first lead screw 12 is threadedly connected to the first threaded hole, and the end of the push rod 10 away from the rotating wheel 6 is slidably inserted in The locking assembly includes a cylinder 14 and a block 15. The cylinder 14 is fixedly connected to the top of the shell 5. The block 15 is located in the shell 5 and is located on the side of the drive plate 13 close to the rotating wheel 6. The output end of the cylinder 14 extends to the inside of the shell 5 and is fixedly connected to the block 15. The block 15 is provided with teeth below the block 15 and above the push rod 10. The block 15 can lock the push rod 10 through the teeth.

[0020] When in use, in the initial state, the side of the driving plate 13 close to the rotating wheel 6 is in contact with the side of the block 15 away from the rotating wheel 6, and the protrusion of the end of the pushing rod 10 away from the rotating wheel 6 is in contact with the side of the driving plate 13 away from the rotating wheel 6. At this time, the rotating wheel 6 and the pushing rod 10 are in the maximum extension position. When it is necessary to shear the hardware metal bent pipe, the first driving motor 11 is started to drive the first screw 12 to rotate. Because the first screw 12 and the driving plate 13 are connected by threads, and the driving plate 13 cannot rotate, the first screw 12 rotates at this time, and the driving plate 13 will slide in the direction away from the block 15. Because the protrusion on the pushing rod 10 limits the pushing rod 10 from passing through the driving plate 13, when the driving plate 13 slides in the direction away from the block 15, it will drive the pushing rod 10 to contract and compress the pressure spring 9 at the same time. When the driving plate 13 moves to the limit position, the pushing rod 10 and the rotating wheel 6 move to the minimum extension position, and then clamp the metal bent pipe to complete the clamping. After that, the first driving motor 11 is started to reverse, because at this time the driving plate 13 can no longer drive the pushing rod 10 through the protruding part of the pushing rod 10, so the pushing rod 10 will slowly extend as the driving plate 13 is reset under the reset action of the pressure spring 9. When the first rotating wheel 6 contacts the arc surface, the pushing rod 10 connected to the rotating wheel 6 will no longer move, and the other rotating wheel 6 will continue to extend as the driving plate 13 is reset until the two rotating wheels 6 are completely in contact with the arc surface. After the driving plate 13 is reset, subsequent operations can be performed. When the equipment needs to lock the push rod 10, the cylinder 14 will be started, thereby pushing the block 15 to move downward, so that the locking teeth below it are engaged with the locking teeth above the push rod 10. When the lock needs to be released, the cylinder 14 will drive the block 15 to move upward, thereby locking and unlocking the push rod 10. Through this setting, the driving of the rotating wheel 6 and the locking of the push rod 10 can be achieved, so as to ensure that the equipment can operate more efficiently.

[0021] Furthermore, it also includes two tangent rods 16 and a tension spring 17, the two tangent rods 16 are respectively rotatably connected to the center of the circle below the rotating wheel 6, the vertical plate 8 is provided with a mounting groove horizontally perpendicular to the center line of the vertical plate 8, the two tangent rods 16 are respectively slid from the openings on both sides of the mounting groove and are placed in the mounting groove, the tension spring 17 is accommodated in the mounting groove, and the two ends are respectively fixedly connected to the ends of the two tangent rods 16, and also includes a sliding wheel 18, the rotating plate 4 is provided with a sliding groove, the sliding wheel 18 is slidably and rotatably connected in the sliding groove, and the vertical plate 8 is rotatably connected above the sliding wheel 18.

[0022] When in use, the two tangent rods 16 are both inserted into the installation groove. Since the installation groove is horizontally perpendicular to the central axis of the vertical plate 8, the two tangent rods 16 inserted into the installation groove must be located in the same straight line and perpendicular to the central axis of the vertical plate 8. Moreover, since the two tangent rods 16 are respectively rotatably connected to the center of the circle below the rotating wheel 6, the same straight line where the two tangent rods 16 are located must be parallel to the tangent of the arc surface. In this way, the center line of the vertical plate 8 and the connecting line between the two rotating wheels 6 can be kept perpendicular, and the shear angle will change with the different positions of the two rotating wheels 6. At the same time, when the position between the two rotating wheels 6 is constantly changing, the distance between the centers of the two rotating wheels 6 will change. At this time, the two tangent rods 16 will slide accordingly in the installation groove, thereby changing the The distance between the two tangent rods 16 is used to ensure that the rotating wheel 6 can operate normally, and the tension spring 17 can provide pulling force, so as to ensure that the two tangent rods 16 are tightly connected when they slide in the installation groove. The sliding wheel 18 is used to provide support for the vertical plate 8. At the same time, it can cope with the position change of the rotating wheel 6 when dealing with metal bends with different curvatures through the sliding action in the sliding groove. In addition, the sliding wheel 18 can also limit the movement of the vertical plate 8 to prevent it from sliding relative to the tangent rod 16 due to external force, thereby causing the shearing position to shift. Through this setting, it can be ensured that the vertical plate 8 is always perpendicular to the tangent of the arc surface, so that the shearing direction of the shearing machine 7 always intersects with the center of the arc surface, thereby ensuring that the cross-section of the metal bend is flat and smooth without any angle inclination.

[0023] Furthermore, it also includes a second drive motor 19 and a second lead screw 20, the second drive motor 19 is fixedly connected to the end of the vertical plate 8 away from the rotating wheel 6, the second lead screw 20 is fixedly connected to the output end of the second drive motor 19, a second threaded hole is opened above the shearing machine 7, and the second lead screw 20 is threadedly connected in the second threaded hole, and also includes a third drive motor 21, a mounting plate 22, a first gear 23 and a second gear 24, the mounting plate 22 and the third drive motor 21 are both fixedly connected to the inside of the shell 1, the first gear 23 and the second gear 24 are both rotatably connected above the mounting plate 22, the output end of the third drive motor 21 is fixedly connected to the first gear 23, the first gear 23 and the second gear 24 are meshed, and the end of the rotating rod 3 located in the shell 1 is fixedly connected above the second gear 24.

[0024] During use, when the equipment determines the shearing angle and needs to shear, the second drive motor 19 is started, and the second drive motor 19 drives the second lead screw 20 to rotate. Because the second lead screw 20 is threadedly connected to the shearing machine 7, and the shearing machine 7 is slidably connected to the top of the vertical plate 8, when the second lead screw 20 rotates, it will push the shearing machine 7 to slide in the direction of the metal bending pipe. At the same time, the shearing machine 7 is started. When the shearing machine 7 contacts the metal bending pipe, it will shear the metal bending pipe until the metal bending pipe is completely cut off, and then the second drive motor 19 will rotate in the opposite direction, thereby The lead screw 20 drives the shearing machine 7 to reset, and the equipment completes one shearing. The rotation of the third driving motor 21 will drive the first gear 23 to rotate, and the rotation of the first gear 23 will drive the second gear 24 to rotate, thereby finally driving the rotating rod 3 to drive the rotating plate 4 to rotate, so that the two rotating wheels 6 are completely in contact with the surface of the metal bent pipe, and the shearing position that meets the requirements is selected by rotating the rotating rod 3 and the rotating plate 4. In this process, the first gear 23 and the second gear 24 are used in coordination to slow down the rotation rate of the rotating rod 3 and the rotating plate 4, thereby making the operation of the equipment more stable and The third drive motor 21 has a self-locking function. When it is not powered on, it can prevent the rotating plate 4 and the rotating rod 3 from rotating due to external force, thereby ensuring that the equipment can operate more safely and efficiently. After determining the shearing position and completing the shearing of this section, if the remaining metal bends can still meet the processing and shearing requirements, it is first necessary to wait for the shearing machine 7 to reset, and then start the cylinder 14 to release the lock of the block 15 on the push rod 10, and start the first drive motor 11 to drive the drive plate 13 to retract the push rod 10 and the rotating wheel 6 to the minimum extension position again, and then start the third drive motor 21 to adjust the rotating plate 4. position, and at the same time, the first drive motor 11 reverses and extends the rotating wheel 6 again to fit the arc surface of the hardware metal bent pipe, and then the appropriate shearing position can be selected and shearing can be performed in the same way as the first shearing. When the hardware metal bent pipe can no longer be sheared, the remaining hardware metal bent pipe is removed from the three-jaw chuck 2, and then the various components of the equipment are returned to the initial position to perform another loading and shearing operation. Through this setting, the second drive motor 19 and the third drive motor 21 can be used to control the equipment, thereby improving the operating convenience of the equipment and making the use of the equipment more intelligent and efficient.

[0025] Working principle of the present invention: In the initial state of the equipment, the pressure spring 9 remains relaxed, and the push rod 10 and the rotating wheel 6 are stretched to the maximum position. When the hardware metal bend is ready to be cut, the driving mechanism starts, and the driving push rod 10 drives the rotating wheel 6 to shrink into the shell 5, and the pressure spring 9 is gradually compressed. When the spring reaches the limit compression state, the driving mechanism stops, and the pushing rod 10 and the rotating wheel 6 are in the minimum extension position. At this time, the bend is clamped through the three-jaw chuck 2 and adjusted to the horizontal. When the driving mechanism is started again for reverse reset, the pushing rod 10 extends to the outside of the shell 5 under the reset force of the pressure spring 9, so that the rotating wheel 6 slowly approaches the arc surface of the metal bend. One or both of the two rotating wheels 6 will first contact the arc surface and fit tightly. Since the driving mechanism no longer drives the pushing rod 10, the rotating wheel 6 is only affected by the spring reset force to ensure stable fit. When both rotating wheels 6 fit with the arc surface, the line connecting their centers is parallel to the tangent of the arc surface, and the vertical plate 8 remains perpendicular to the line, thereby determining the center position of the arc surface. After the driving mechanism is reset, the shearing position is adjusted by rotating the plate 4 and the rotating rod 3 to adapt to the different needs of metal pipe bending shearing. During this process, the vertical plate 8 changes its angle with the movement of the rotating wheel 6, but always points to the center of the arc surface. To ensure that large-arc metal bends can also be processed normally, the rotation diameter of the rotating wheel 6 and the push rod 10 at the minimum extension position must be much larger than the maximum bend diameter that the equipment can process. After the shearing position is determined, the driving mechanism locks the push rod 10 to prevent external forces from changing the direction of the vertical plate 8. Subsequently, the shearing machine 7 is pushed to slide along the center line of the vertical plate 8 to the bend for shearing, and reset after completion to avoid collisions caused by excessive propulsion. This setting determines the optimal shearing direction according to the curvature of the bend through the cooperation of the two rotating wheels 6 and the vertical plate 8, thereby improving the applicability of the equipment, the shearing effect, and the flatness and smoothness of the cut surface.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0027] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A metal pipe bending and shearing device for manufacturing hardware products, comprising a housing (1) and a three-jaw chuck (2), wherein the three-jaw chuck (2) is fixedly connected to the upper part of the housing (1), characterized in that: It also includes a rotating rod (3), a rotating plate (4), a housing (5), two rotating wheels (6), a shearing machine (7), a vertical plate (8), a pressure spring (9), a push rod (10) and a driving mechanism; One end of the rotating rod (3) is rotatably connected to the inside of the shell (1); a rotating groove is provided above the shell (1); the other end of the rotating rod (3) passes through the rotating groove and extends to the top of the shell (1); the rotating plate (4) is fixedly connected to the top of one end of the rotating rod (3) located outside the shell (1); The shell (5) is fixedly connected to the top of the rotating plate (4), the two rotating wheels (6) are respectively rotatably connected to one end of the push rod (10), the other end of the push rod (10) is slidably inserted into the shell (5), the driving mechanism is arranged on the outside of the shell (5), and can drive the push rod (10) to perform telescopic movement and lock the push rod (10), the pressure spring (9) is sleeved on the outside of the push rod (10), and the two ends are respectively in contact with the rotating wheel (6) and the surface of the shell (5); The vertical plate (8) is arranged below the two rotating wheels (6), and the center line of the vertical plate (8) can always remain perpendicular to the center line between the two rotating wheels (6). The shearing machine (7) is slidably connected above the vertical plate (8), and the sliding direction is the same as the direction of the center line of the vertical plate (8).

2. A metal pipe bending and shearing device for hardware product manufacturing as claimed in claim 1, characterized in that: The driving mechanism comprises a driving assembly and a locking assembly, wherein the driving assembly comprises a first driving motor (11), a first lead screw (12) and a driving plate (13); The first drive motor (11) is fixedly connected to the top of the rotating plate (4), the first lead screw (12) is located in the shell (5), the output end of the first drive motor (11) extends to the inside of the shell (5) and is fixedly connected to the first lead screw (12), the drive plate (13) is slidably connected to the inside of the shell (5), and a first threaded hole and a through hole are opened on the top of the drive plate (13), and the first lead screw (12) is threadedly connected to the first threaded hole; The end of the push rod (10) away from the rotating wheel (6) is slidably inserted into the through hole and is restricted by the protrusion at the end of the push rod (10) to slide from the side of the drive plate (13) away from the rotating wheel (6) to the side of the drive plate (13) close to the rotating wheel (6).

3. A metal pipe bending and shearing device for hardware product manufacturing as claimed in claim 2, characterized in that: The locking assembly comprises a cylinder (14) and a clamping block (15); The cylinder (14) is fixedly connected to the upper part of the shell (5), the clamping block (15) is located in the shell (5) and is located on a side of the driving plate (13) close to the rotating wheel (6), and the output end of the cylinder (14) extends to the inside of the shell (5) and is fixedly connected to the clamping block (15); Locking teeth are provided below the locking block (15) and above the pushing rod (10), and the locking block (15) can lock the pushing rod (10) via the locking teeth.

4. A metal pipe bending and shearing device for hardware product manufacturing as claimed in claim 1, characterized in that: It also includes two tangent rods (16) and a tension spring (17); The two tangent rods (16) are rotatably connected to the center of the circle below the rotating wheel (6), and a mounting groove horizontally perpendicular to the center line of the vertical plate (8) is opened inside the vertical plate (8). The two tangent rods (16) are slidably clamped in the mounting groove from the openings on both sides of the mounting groove; The tension spring (17) is accommodated in the installation groove, and two ends thereof are respectively fixedly connected to the ends of the two tangent rods (16).

5. A metal pipe bending and shearing device for hardware product manufacturing as claimed in claim 1, characterized in that: It also comprises a sliding wheel (18), a sliding groove is provided on the rotating plate (4), the sliding wheel (18) is slidably and rotatably connected in the sliding groove, and the vertical plate (8) is rotatably connected above the sliding wheel (18).

6. A metal pipe bending and shearing device for hardware product manufacturing as claimed in claim 1, characterized in that: It also includes a second drive motor (19) and a second lead screw (20); The second drive motor (19) is fixedly connected to an end of the vertical plate (8) away from the rotating wheel (6), the second lead screw (20) is fixedly connected to the output end of the second drive motor (19), a second threaded hole is provided above the shearing machine (7), and the second lead screw (20) is threadedly connected to the second threaded hole.

7. A metal pipe bending and shearing device for hardware product manufacturing as claimed in claim 1, characterized in that: It also includes a third drive motor (21), a mounting plate (22), a first gear (23) and a second gear (24); The mounting plate (22) and the third drive motor (21) are both fixedly connected to the inside of the housing (1); the first gear (23) and the second gear (24) are both rotatably connected above the mounting plate (22); the output end of the third drive motor (21) is fixedly connected to the first gear (23); the first gear (23) and the second gear (24) are meshed; and one end of the rotating rod (3) located inside the housing (1) is fixedly connected to the top of the second gear (24).

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