A metal pipe bending and shearing device for hardware product manufacturing

Abstract

The present invention discloses a metal pipe bending and shearing device for hardware product manufacturing, which belongs to the technical field of hardware product manufacturing. The device comprises a shell and a three-jaw chuck, and also 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. The vertical plate is arranged below the two rotating wheels, and the center line of the vertical plate can always remain perpendicular to the line connecting the centers of the circles between 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. The invention has the advantages of being able to accurately shear hardware metal pipes with different curvatures, and can ensure that the shearing surface can be flat and smooth when shearing hardware metal pipes with different curvatures. The invention solves the problems that the existing metal pipe bending and shearing device cannot shear hardware metal pipes with different curvatures and cannot accurately determine the shearing direction, resulting in the shearing surface of the metal pipe being tilted and not flat and smooth 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] Metal bending and shearing is a crucial metalworking technology, widely used in industries such as industry, construction, automotive, and aerospace. This process primarily involves the precise cutting and processing of metal pipes to meet specific design and application requirements. Due to their spatial flexibility, metal pipe bends are often used in various piping systems, such as water supply and drainage systems, oil and gas pipelines, and automotive exhaust pipes.

[0003] When shearing hardware metal pipe bends, it is usually necessary to cut the hardware metal pipe bends into bend sections of different sizes to facilitate the subsequent use of the hardware metal pipe bends. During the shearing process of 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 polishing 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 and shearing device cannot directly cut the hardware metal pipe bending smoothly is that the curvatures of different hardware metal pipes 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 cuts along a straight line passing through this point, thereby ensuring that the sheared surface of the hardware metal pipe bending is flat and smooth. However, for hardware metal pipe bending with different curvatures, the arc center will change with the change of the curvature, which will make it impossible to determine the arc center, and then the shearing machine will not be able to accurately cut 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 sheared 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 response to 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 achieved 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, two rotating wheels, a shearing machine, a vertical plate, a pressure spring, a push 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 above 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 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 shell surface. 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 between 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 screw and a driving plate, the first driving motor is fixedly connected to the top of the rotating plate, the first screw is located in the shell, the output end of the first driving motor extends to the inside of the shell and is fixedly connected to the first screw, the driving plate is slidably connected to the inside of the shell, and a first threaded hole and a through hole are opened above the driving plate, the first 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, and a mounting groove horizontally perpendicular to the center line of the vertical plate is opened inside the vertical plate, and the two tangent rods are respectively slid from the openings on both sides of the mounting groove and placed 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 further includes a sliding wheel, a sliding groove is opened on the rotating plate, the sliding wheel slides and rotates 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 the 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:

[0013] In the initial state of the present invention, the pressure spring is in its natural position, and the push rod and rotating wheel are extended to their maximum position. To shear a metal bend, the drive mechanism is first activated, which drives the push rod and rotating wheel to retract into the housing, compressing the pressure spring. When the pressure spring reaches its limit, the drive mechanism stops, and the push rod and rotating wheel are at their minimum extension. At this point, the metal bend is placed in a three-jaw chuck and secured to ensure a level position. The drive mechanism is then reversed to reset the position. Under the restoring force of the pressure spring, the push rod slowly extends outward from the housing, driving the rotating wheel toward the arc surface of the metal bend. Regardless of whether both rotating wheels contact the arc surface simultaneously, the first one to contact will firmly contact the arc surface, while the other wheel continues to return to contact as the drive mechanism returns until contact is achieved. When both rotating wheels are in contact with the arc surface, the line connecting 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. The rotating plate and rotating rod are adjusted to determine the cutting 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. Since the center positions of metal bends with different curvatures are different, 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 its initial position. During the entire 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 bend through the cooperation of the two rotating wheels and the vertical plate, thereby improving the applicability and shearing effect of the equipment while ensuring the flatness and smoothness of the cut surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram provided by an embodiment of the present invention;

[0015] Figure 2 The embodiment of the present invention provides Figure 1 A partial enlarged view of point A in the middle;

[0016] Figure 3 is a schematic diagram of another perspective structure provided by an embodiment of the present invention;

[0017] Figure 4 Schematic diagram of the internal structure of the housing provided by an embodiment of the present invention;

[0018] Figure 5 The embodiment of the present invention provides Figure 4 A partial enlarged view of point B in the middle;

[0019] Figure 61 is a schematic diagram of the coordination structure of the third drive motor provided in an embodiment of the present invention;

[0020] Figure 7 Schematic diagram of the internal structure of the housing provided by an embodiment of the present invention;

[0021] Figure 8 The embodiment of the present invention provides Figure 7 A partial enlarged view of point C in the middle;

[0022] Figure 9 This is a schematic diagram of the internal structure of a housing provided from another perspective according to an embodiment of the present invention;

[0023] Figure 10 The embodiment of the present invention provides Figure 9 A partial enlarged view of point D in the middle;

[0024] Figure 11 Schematic diagram of the drive plate matching structure provided by an embodiment of the present invention;

[0025] Figure 12 This is a schematic diagram of the vertical plate matching structure provided by an embodiment of the present invention;

[0026] Figure 13 The embodiment of the present invention provides Figure 12 A partial enlarged view of point E in the middle.

[0027] 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. clamping 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

[0028] 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.

[0029] The structure of the present invention is described in detail below with reference to the accompanying drawings.

[0030] 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 includes 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 includes a rotating rod 3, a rotating plate 4, a shell 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 opened 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 the 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 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 its 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 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.

[0031] When in use, in the initial state, the pressure spring 9 is in a state of no stress, and the push rod 10 and the rotating wheel 6 are in the maximum extension position. When the hardware metal bend needs to be sheared, the driving mechanism is first started. 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 bend is passed through the three-jaw chuck 2 for clamping, and ensure that it is level, 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 The push rod 10 will be stretched to the outside of the shell 5 by the reset 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 push rod 10 from popping out instantly, so that the push rod 10 is slowly reset by the reset 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, regardless of 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 under the reset 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 be kept 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 amount. The metal bend 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 always ensures that the straight line on which it is located intersects with the center of the arc surface. At the same time, because the center positions of metal bends of different radians are different, and the rotation centers of the rotating rod 3 and the rotating plate 4 are fixed, the rotation 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 bend with the maximum radian that the equipment can process, thereby ensuring that the rotating rod 3 and the rotating plate 4 can rotate normally when dealing with large-radian metal bends. 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, thereby 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, thereby slowly sliding to the hardware metal bend to shear the metal bend. When the metal bend is cut, 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, 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.

[0032] Furthermore, the driving mechanism includes a driving component and a locking component, and the driving component includes a first driving motor 11, a first 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 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 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 above the driving plate 13. The first 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 into The locking assembly includes a cylinder 14 and a block 15, and 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. There are teeth below the block 15 and above the push rod 10, and the block 15 can lock the push rod 10 through the teeth.

[0033] 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 extended 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 threadedly connected, and the driving plate 13 cannot rotate, the first screw 12 rotates at this time, and the driving plate 13 slides in the direction away from the block 15, and 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 drives the pushing rod 10 to retract and compresses the pressure spring 9. When the driving plate 13 moves to the limit position, the pushing rod 10 and the rotating wheel 6 move to the minimum extended position, and then clamp the metal bent pipe to complete the clamping. After that, the first drive motor 11 is started to reverse, because 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 carried out. 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.

[0034] 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, 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 respectively slid from the openings on both sides of the mounting groove and placed in the mounting groove. The tension spring 17 is accommodated in the mounting groove, and its two ends are respectively fixedly connected to the end parts of the two tangent rods 16, and also includes a sliding wheel 18. A sliding groove is opened on the rotating plate 4, and 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.

[0035] When in use, the two tangent rods 16 are both inserted into the mounting grooves, and because the mounting grooves are horizontally perpendicular to the central axis of the vertical plate 8, the two tangent rods 16 inserted into the mounting grooves must be located in the same straight line and perpendicular to the central axis of the vertical plate 8. Moreover, because 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, thereby making the center line of the vertical plate 8 and the line connecting the two rotating wheels 6 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 changes continuously, 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 mounting grooves, thereby changing the The distance between the two tangent rods 16 ensures that the rotating wheel 6 can operate normally, and the tension spring 17 can provide pulling force, thereby ensuring 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. Moreover, 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 and there is no angle tilt.

[0036] 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 to 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 engaged, and the end of the rotating rod 3 located in the shell 1 is fixedly connected above the second gear 24.

[0037] During use, when the equipment determines the shearing angle and needs to be sheared, the second drive motor 19 is started, and the second drive motor 19 drives the second screw 20 to rotate. Because the second 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 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 drive 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 bend 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 cooperation of the first gear 23 and the second gear 24 is used 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 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, so as to ensure that the equipment can operate more safely and efficiently. After determining the shearing position and completing the shearing of the section, if the remaining metal bends can still meet the processing and shearing requirements, it is necessary to first 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 bend, 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 bend can no longer be sheared, the remaining hardware metal bend is removed from the three-jaw chuck 2, and then the various components of the equipment are returned to the initial position to perform the loading and shearing work again. Through this setting, the second drive motor 19 and the third drive motor 21 can be used to control the equipment, thereby improving the operation convenience of the equipment and making the use of the equipment more intelligent and efficient.

[0038] Working principle of the present invention:

[0039] In the initial state of the device, the pressure spring 9 remains relaxed, and the push rod 10 and rotating wheel 6 are extended to their maximum position. When preparing to cut a metal bend, the drive mechanism activates, driving the push rod 10 to retract the rotating wheel 6 into the housing 5 while gradually compressing the pressure spring 9. When the spring reaches its ultimate compression, the drive mechanism stops, and the push rod 10 and rotating wheel 6 are at their minimum extension position. At this point, the bend is passed through the three-jaw chuck 2, clamped, and adjusted to a horizontal position. When the drive mechanism is activated again for reverse reset, the push rod 10, under the restoring force of the pressure spring 9, extends outward from the housing 5, allowing the rotating wheel 6 to slowly approach the curved surface of the metal bend. One or both rotating wheels 6 will initially contact the curved surface and form a tight fit. Since the drive mechanism no longer drives the push rod 10, the rotating wheels 6 are only acted upon by the spring's restoring force, ensuring a stable fit. When both rotating wheels 6 are in contact with the curved surface, the line connecting their centers is parallel to the tangent of the curved surface, and the vertical plate 8 remains perpendicular to this line, thus determining the center position of the curved 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 bend shearing. During this process, the vertical plate 8 changes its angle as the rotating wheel 6 moves, but it always points to the center of the arc surface. To ensure that large-radius metal bends can 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 force from changing the direction of the vertical plate 8. Subsequently, the shearing machine 7 is pushed along the center line of the vertical plate 8 to slide 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 cross-section.

[0040] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0041] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A 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 portion of the housing (1), and is 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 slot is provided above the shell (1), the other end of the rotating rod (3) passes through the rotating slot and extends to the top of the shell (1), and 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 surface of the rotating wheel (6) and 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 line connecting the centers 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); 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 above 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).

2. A metal pipe bending and shearing device for hardware product manufacturing according to claim 1, characterized in that: The locking assembly includes 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 the 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 clamping block (15) and above the pushing rod (10), and the clamping block (15) can lock the pushing rod (10) through the locking teeth.

3. The metal pipe bending and shearing device for hardware product manufacturing according to claim 1, characterized in that: Also included are two tangential 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); 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 respectively slid from the openings on both sides of the mounting groove and are clamped in the mounting groove; The tension spring (17) is accommodated in the installation groove, and its two ends are respectively fixedly connected to the ends of the two tangent rods (16).

4. The metal pipe bending and shearing device for hardware product manufacturing according to claim 1, characterized in that: It also includes 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).

5. The metal pipe bending and shearing device for hardware product manufacturing according to claim 1, characterized in that: 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.

6. The metal pipe bending and shearing device for hardware product manufacturing according to 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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