Metal pipe bending device

Abstract

The invention relates to the technical field of bending devices, and particularly discloses a metal pipe bending device which comprises a machine shell, the machine shell is provided with a working cavity and a material storage cavity which communicate with each other, the front side of the working cavity is provided with a bending opening, and the machine shell is further provided with a material supporting module and a bending module; the material supporting module comprises a rotating cylinder rotating in the working cavity, a plurality of material supporting bases are arranged on the rotating cylinder in the circumferential direction, and a driving rod coaxial with the rotating cylinder is further rotationally installed in the working cavity. And the driving rod is axially, elastically and slidably connected with a bearing seat. The pipe fitting bending device has the beneficial effects that the rotating wheel on the upper portion can continuously swing up and down, the rotating wheel penetrates through the discharging channel to stretch into the storage cavity, the pipe fitting retained in the discharging channel is dredged, after the falling pipe fitting rotates to the front side along with the rotating cylinder, bending treatment on the pipe fitting is achieved through the horizontal moving process of the rotating wheel on the front side, and the pipe fitting bending efficiency is improved. Smooth blanking of the pipe fittings is achieved, and meanwhile the bending efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of bending devices, and in particular to a metal tube bending device. Background Art

[0002] Diaphragm compressors, due to their structural characteristics, are widely used to compress and transport various high-purity gases, precious rare gases, toxic and corrosive gases. As an irreplaceable positive displacement compressor, they will be increasingly used with the advancement and development of science and technology and the continuous improvement of people's living standards. Diaphragm compressors are primarily used in industries such as nuclear power, food and medicine, petrochemicals, electronics, materials, national defense, and scientific research.

[0003] A Chinese patent with authorization announcement number CN114769385B discloses a bending device for automobile pipeline processing with a positioning function and convenient unloading. The patent relates to the technical field of metal pipe processing equipment. The blanking component is arranged on the workbench, and the blanking component is arranged between the fixed mold and the movable mold, and the positioning component is arranged on the blanking component; it is provided with a rotating unloading structure, which makes it convenient to remove the workpiece from the fixed mold after the workpiece is processed, thereby facilitating unloading, so that the operator does not touch the fixed mold, reducing safety hazards during unloading, and it is provided with a positioning structure, which facilitates positioning when processing the pipeline workpiece, thereby reducing raw material consumption.

[0004] The pipes on the diaphragm compressor need to be bent. During the pipe processing process, the existing bending device has a technical defect of poor material unloading. During the unloading process, the pipes to be processed are stacked in the storage cavity. Due to the disorderly accumulation of materials, multiple pipes are simultaneously retained in the unloading area, forming a physical blockage. This material jamming phenomenon directly causes the automatic feeding system to fail, forcing the production line to be frequently shut down for manual intervention, which significantly reduces the continuity and production efficiency of the bending process. Summary of the Invention

[0005] The present invention provides a metal tube bending device, which aims to solve the technical problem in the related art that during the unloading process of the pipes to be processed stacked in the storage cavity, due to the disorderly accumulation of materials, multiple pipes are simultaneously retained in the unloading port area, forming a physical blockage. This material jamming phenomenon directly causes the automatic feeding system to fail, forcing the production line to be frequently shut down for manual intervention, which significantly reduces the continuity of the bending process and the production efficiency.

[0006] The present invention relates to a metal pipe bending device, comprising: a casing, a working chamber and a storage chamber connected to each other, a bending opening being provided on the front side of the working chamber, and a supporting module and a bending module being further provided on the casing; the supporting module comprises a rotating drum rotating in the working chamber, a plurality of supporting seats being provided circumferentially of the rotating drum, and a driving rod coaxial with the rotating drum being rotatably installed in the working chamber; a bearing seat is axially elastically and slidably connected to the driving rod, and a plurality of swing frames corresponding to the supporting seats being circumferentially rotated on the bearing seat are capable of pitching and swinging, and a rotating wheel is rotated on the swing frame, and the swing frame can drive the rotating wheel to move up and down, so that the rotating wheel can extend into the storage chamber when it rises, and can drive the single pipe to be placed in the working chamber when it descends; the bending module comprises a chassis provided with a bending opening, a guide protrusion is provided on the chassis, and a bending wheel is also rotatably installed on the chassis, and the rotating wheel on the front side abuts against the guide protrusion when it moves, so as to cooperate with the bending wheel to bend the pipe fitting.

[0007] Beneficial effect: When a pipe needs to be bent, the cylinder drives the movable frame to move to the right first, and the rack can drive the gear to rotate, thereby causing the connecting shaft to rotate. The connecting shaft drives the cam to rotate synchronously. During the rotation of the cam, it continuously pushes downward on the abutment portion of the swing frame, and the swing frame can continuously swing back and forth around the rotating shaft on the rotating seat, that is, the swing frame can drive the rotating wheel to continuously swing up and down. When the rotating wheel moves upward, it will pass through the blanking channel and extend into the storage chamber. Therefore, if the pipe in the storage chamber is stuck in the blanking channel, the rotating wheel will continuously push upward, so that the pipe can fall smoothly into the blanking channel. When the rotating wheel on the front side moves to the right, the rotating wheel abuts against the guide protrusion, thereby forcing the rotating wheel to move forward along the trajectory of the guide protrusion, cooperating with the bending wheel to complete the bending process of the pipe. The right part of the pipe will pass through the bending opening and be bent to the front side, and then the bent pipe can be taken out, and this cycle is repeated. The wheel at the top can be continuously swung up and down, so that it passes through the blanking channel and extends into the storage cavity, clearing the pipes trapped in the blanking channel, thereby facilitating the smooth falling of the pipes from the blanking channel. At the same time, when the fallen pipes follow the rotating drum to rotate to the front side, the horizontal movement of the front wheel is used to realize the bending processing of the pipes, which not only realizes the smooth discharge of the pipes, but also improves the bending efficiency.

[0008] Preferably, a mounting platform is fixedly provided in the working chamber, a telescopic part is provided on the mounting platform, a movable frame is fixedly provided on the telescopic part of the telescopic part, a connecting shaft which is rotatably installed on the movable frame and is matched with the transmission of the mounting platform is provided, a cam is provided on the connecting shaft, a rack is fixedly installed on the upper surface of the mounting platform, the rack extends along the length direction of the driving rod, a gear is fixedly installed on the connecting shaft, and the gear is meshed with the rack.

[0009] The effect is that when the connecting shaft moves to the right following the moving frame, the connecting shaft is driven to rotate through the transmission of the gear and the rack, thereby realizing the rotation of the cam.

[0010] Preferably, a push plate is fixedly mounted on the movable frame. The push plate is an annular structure and is coaxially arranged with the driving rod. The driving rod passes through a through hole on the inner side of the push plate.

[0011] The effect thereof is that when the movable frame moves to the right, the bearing seat is driven to move to the right by the pushing plate.

[0012] Preferably, a plurality of swivel seats are provided on the outer wall of the bearing seat along its circumference, the swing frame is rotatably installed on the swivel seat through a rotating shaft, and a torsion spring is provided on the outer side of the rotating shaft, one end of the torsion spring is connected to the swivel seat, and the other end is connected to the swing frame.

[0013] Preferably, the swing frame has an abutment portion and a rotating portion, the cam can contact the abutment portion to push the swing frame to swing, and the rotating wheel is rotatably installed on the rotating portion.

[0014] Preferably, an inwardly recessed annular groove is provided on the outer peripheral wall of the rotor so that the rotor can support the pipe.

[0015] Preferably, a sliding column is fixed on the material support seat, and the sliding column is elastically slidably fitted on the rotating drum in the radial direction. A plurality of slots are arranged on the sliding column along its axial intervals. A connecting chamber is opened on the rotating drum at a position corresponding to each material support seat. The moving end of the sliding column penetrates into the corresponding connecting chamber. An electromagnetic plate is fixedly installed in the connecting chamber. A sliding seat made of metal is elastically slidably fitted on the electromagnetic plate. The moving direction of the sliding seat is perpendicular to the axis of the sliding column. An insert plate is provided on the moving side of the sliding seat, and the insert plate is adapted to the slot.

[0016] The effect is that the supporting seat can be moved and adjusted along the radial direction of the drum to adapt to pipes of different sizes.

[0017] Preferably, the guide protrusion is an arc-shaped structure, and the rear portion of the guide protrusion extends into the working cavity through the bent opening, and the guide protrusion is located on the moving path of the frontmost wheel.

[0018] The effect is that when the rotating wheel located at the front side moves to the right, it cooperates with the bending wheel to bend the pipe.

[0019] Preferably, the storage chamber and the working chamber are arranged vertically, and a material dropping channel is formed at the connection between the two, and the cross section of the working chamber is circular.

[0020] Preferably, the bearing surface of the material supporting seat is an inwardly concave arc-shaped structure.

[0021] The above technical solution has the following beneficial effects: when a pipe needs to be bent, the cylinder drives the movable frame to move to the right first, and the rack drives the gear to rotate, thereby rotating the connecting shaft, which drives the cam to rotate synchronously. During the rotation of the cam, it continuously pushes downward on the abutment portion of the swing frame, and the swing frame can continuously swing back and forth around the rotating shaft on the rotating seat. That is, the swing frame can drive the rotating wheel to continuously swing up and down. When the rotating wheel moves upward, it passes through the blanking channel and extends into the storage chamber. Therefore, if a pipe in the storage chamber is stuck in the blanking channel, the rotating wheel continuously pushes upward, allowing the pipe to fall smoothly into the blanking channel. When the rotating wheel on the front side moves to the right, it abuts against the guide protrusion, forcing the rotating wheel to move forward along the trajectory of the guide protrusion, cooperating with the bending wheel to complete the bending process of the pipe. The right portion of the pipe passes through the bending opening and is bent to the front side. The bent pipe is then removed and the cycle continues. The wheel at the top can be continuously swung up and down, so that it passes through the blanking channel and extends into the storage cavity, clearing the pipes trapped in the blanking channel, thereby facilitating the smooth falling of the pipes from the blanking channel. At the same time, when the fallen pipes follow the rotating drum to rotate to the front side, the horizontal movement of the front wheel is used to realize the bending processing of the pipes, which not only realizes the smooth discharge of the pipes, but also improves the bending efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2 It is a cross-sectional view of the present invention.

[0024] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle.

[0025] Figure 4 It is a schematic diagram of the internal structure of the housing of the present invention from the right side.

[0026] Figure 5 Schematic diagram of the structure of the driving rod of the present invention.

[0027] Figure 6 It is an exploded schematic diagram of the mounting platform and the driving rod of the present invention.

[0028] Figure 7 It is a structural schematic diagram of the swing frame of the present invention.

[0029] Figure 8 It is a schematic diagram of the internal structure of the casing of the present invention from a top view.

[0030] Figure 9 It is a left side view of the rotating drum of the present invention.

[0031] Reference numerals: 10. Casing; 11. Base; 12. Working chamber; 13. Storage chamber; 14. Blanking channel; 15. Bending opening; 16. Pipe fitting; 20. Rotating drum; 21. Loading groove; 22. Supporting seat; 23. Driving rod; 30. Sliding column; 31. First spring; 32. Slot; 33. Connecting chamber; 34. Electromagnetic plate; 35. Sliding seat; 36. Second spring; 37. Insert plate; 40. Mounting platform; 41. Rack; 42. Cylinder; 43. Moving frame; 44. Connecting shaft; 45. Gear; 46. Cam; 47. Connecting rod; 48. Push plate; 50. Bearing seat; 51. Third spring; 52. Side plate; 53. Rotating seat; 54. Swinging frame; 55. Abutment portion; 56. Rotating portion; 57. Rotating wheel; 60. Chassis; 61. Guide protrusion; 62. Bending wheel. DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0033] like Figures 1 to 9 As shown, a specific embodiment of a metal tube bending device of the present invention. For ease of understanding, the present invention takes the pipe fitting 16 as the application scenario of the present invention. The pipe fitting 16 is the raw material for making the diaphragm compressor pipeline. After bending the pipe fitting 16 according to demand, the diaphragm compressor pipeline can be obtained. The metal tube bending device includes a bearing module, a supporting module and a bending module.

[0034] The supporting module and the bending module are installed on the carrying module. The pipe fittings 16 are stored in the carrying module. The supporting module is used to receive the pipe fittings 16 dropped from the carrying module. The supporting module then drives the pipe fittings 16 to move to the bending module and cooperates with the bending module to bend the pipe fittings 16 into shape.

[0035] like Figure 1 、 Figure 2 as well as Figure 4 As shown, the supporting module includes a housing 10, a base 11, and a material drop channel 14. The base 11 is fixedly mounted on the bottom of the housing 10 and placed on the ground to support and secure the housing 10. The housing 10 contains a storage chamber 13 and a working chamber 12, which are arranged vertically above the working chamber 12. The storage chamber 13 is used to support pipes 16, and the supporting module is installed in the working chamber 12.

[0036] The storage chamber 13 is connected to the working chamber 12 , and a material dropping channel 14 is formed at the connection point between the two. The pipe 16 in the storage chamber 13 can drop into the working chamber 12 through the material dropping channel 14 .

[0037] In this embodiment, the top of the storage chamber 13 is an open rectangular structure, the length direction of the working chamber 12 extends in the left and right direction, and the bottom of the storage chamber 13 is a conical structure. The bottom of the storage chamber 13 is connected with the top of the working chamber 12, so that the pipe fittings 16 located in the storage chamber 13 can converge to the bottom of the storage chamber 13, and then the pipe fittings 16 fall into the working chamber 12 through the blanking channel 14. The supporting module will lift the pipe fittings 16 that fall into the working chamber 12 and send them to the bending module for bending processing.

[0038] The working chamber 12 is a circular structure, and the axis of the working chamber 12 extends in the left and right directions. The purpose of setting the working chamber 12 to be circular is to adapt to the material supporting module, ensuring that the material supporting module can be installed in the working chamber 12 and can rotate, so as to facilitate the accurate reception of the pipe 16 dropped from the blanking channel 14 into the working chamber 12. The structure and working principle of the material supporting module will be described in detail later.

[0039] A curved opening 15 is provided on the front side of the housing 10, corresponding to the working chamber 12. This opening 15 extends through the front side of the housing 10 and communicates with the interior of the working chamber 12. It is located near the right edge of the front side of the working chamber 12. Curved opening 15 is rectangular and extends horizontally. A bending module is installed at this opening. This facilitates bending of the pipe 16 and facilitates unloading.

[0040] like Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 as well as Figure 9 As shown, the material supporting module includes a material supporting unit and a pushing unit.

[0041] like Figure 2 、 Figure 5 as well as Figure 9 As shown, the material support unit includes a rotating drum 20, a material support seat 22 and a driving rod 23. The rotating drum 20 is rotatably installed in the working chamber 12 of the housing 10. It is particularly noted that the rotating drum 20 is coaxially arranged with the working chamber 12, and the rotating drum 20 is arranged on the left inner wall of the working chamber 12. A plurality of loading grooves 21 are evenly arranged along the circumference of the rotating drum 20. The loading grooves 21 are rectangular structures, and the length direction of the loading grooves 21 extends along the axial direction of the rotating drum 20. The groove depth of the loading grooves 21 extends along the radial direction of the rotating drum 20. It should be emphasized that in this embodiment, the number of loading grooves 21 is four. In other embodiments, the number can be 6, 8 or more.

[0042] A support seat 22 is fixedly installed in each loading groove 21. The support surface of the support seat 22 is an inwardly concave arc structure, so that the support seat 22 can better support the pipe 16. That is, the pipe 16 will fall onto the support surface of the support seat 22, driving the pipe 16 to move. In other embodiments, the support surface of the support seat 22 can also be other downwardly concave structures, such as square, V-shaped, etc., which can be any shape that can support the pipe 16.

[0043] A drive rod 23 is also rotatably mounted within the working chamber 12. The drive rod 23 is coaxially disposed with the drum 20, with its ends rotatably engaged with the left and right side walls of the working chamber 12. That is, the drive rod 23 extends through the drum 20 and is fixedly connected to the drum 20. In this embodiment, the drive rod 23 and the drum 20 are connected by a key. When the drive rod 23 rotates, it can drive the drum 20 to rotate synchronously. A motor is fixedly mounted on the side of the housing 10, and the output end of the motor is fixedly connected to the drive rod 23, so that the motor can drive the drive rod 23 to rotate, and the drive rod 23 drives the drum 20 to rotate.

[0044] That is, in this embodiment, the motor drives the driving rod 23 to rotate, so that the rotating drum 20 rotates 90 degrees each time, so that the supporting seat 22 rotates in turn to the top of the rotating drum 20 and corresponds to the blanking channel 14. When the supporting seat 22 corresponds to the blanking channel 14, the pipe fittings 16 in the storage cavity 13 can fall onto the supporting seat 22 through the blanking channel 14, and then when the rotating drum 20 rotates, it drives the pipe fittings 16 to move.

[0045] It should be noted that, in this embodiment, the diameter of the drum 20 is the same as that of the working chamber 12, or the diameter of the drum 20 is slightly smaller than that of the working chamber 12, so that when the drum 20 rotates, the pipe 16 can be prevented from falling out of the loading groove 21.

[0046] like Figure 9 As shown, in another embodiment, the support seat 22 is slidably fitted in the loading groove 21, so that the support seat 22 can carry pipes 16 of different diameters. In order to achieve this function, the rotating drum 20 is also provided with a sliding column 30, a first spring 31, a connecting chamber 33, an electromagnetic plate 34, a sliding seat 35, a second spring 36 and an insert plate 37, as shown below.

[0047] A slide post 30 is fixedly mounted at the bottom of each support seat 22. The slide post 30 slides radially along the drum 20. A first spring 31 is sleeved around the outer side of the slide post 30. One end of the first spring 31 is connected to the bottom of the support seat 22, and the other end is connected to the bottom of the loading groove 21. This provides elastic force to return the slide post 30. When the support seat 22 and the slide post 30 move toward the bottom of the loading groove 21, the support seat 22 can support pipes 16 with larger diameters. Multiple slots 32 are spaced along the outer wall of the slide post 30 along its axial direction. Each slot 32 has a square structure.

[0048] A connecting chamber 33 is defined on the rotating drum 20 at a position corresponding to each loading groove 21. The moving end of the slide 30 penetrates into the corresponding connecting chamber 33. An electromagnetic plate 34 is fixedly mounted within the connecting chamber 33. A sliding seat 35 slidably engages with the electromagnetic plate 34, and the sliding seat 35 moves perpendicular to the axis of the slide 30. The sliding seat 35 is made of metal, and in this embodiment, is made of iron. A second spring 36 is interposed between the sliding seat 35 and the electromagnetic plate 34 to provide elastic force to reset the sliding seat 35. An insert plate 37 is provided on the moving side of the sliding seat 35, which fits into the slot 32 on the slide 30.

[0049] When the electromagnetic plate 34 is energized, it generates magnetism, thereby pushing the sliding seat 35 to move. When the support seat 22 needs to be adjusted, the support seat 22 can be manually pressed, causing the support seat 22 and the slide 30 to move radially toward the bottom of the loading groove 21 of the drum 20. The slide 30 enters the connecting chamber 33. Then, the electromagnetic plate 34 is energized, and the slide seat 35 drives the insert plate 37 to be inserted into the corresponding slot 32. Alternatively, when the pipe 16 falls onto the support seat 22, the weight of the pipe 16 itself causes the support seat 22 to slide. The position of the support seat 22 can also be adjusted to accommodate pipes 16 of different sizes.

[0050] It should be noted that the insert plate 37 and the slot 32 are specially provided to fix the support seat 22 in order to prevent the movement of the support seat 22 from affecting the bending when the pipe 16 is bent later. This will be explained in detail later.

[0051] like Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 as well as Figure 7 As shown, the push unit includes a driving assembly and a push assembly. The driving assembly includes a mounting platform 40, a rack 41, a cylinder 42, a moving frame 43, a connecting shaft 44, a gear 45, a cam 46, a connecting rod 47 and a push plate 48.

[0052] A mounting platform 40 is fixedly mounted horizontally on the inner wall of the working chamber 12. The mounting platform 40 is a rectangular plate-shaped structure, and its length extends along the axial direction of the working chamber 12. In this embodiment, the mounting platform 40 is located on the rear side wall of the working chamber 12 and near the top.

[0053] A rack 41 is fixedly mounted on the upper surface of the mounting platform 40, and the length of the rack 41 extends in the left-right direction. A cylinder 42 is fixedly mounted on the lower surface of the mounting platform 40, and the axis of the telescopic portion of the cylinder 42 also extends in the left-right direction. A movable frame 43 is fixedly mounted on the telescopic portion of the cylinder 42, and a connecting shaft 44 is rotatably mounted on the movable frame 43, and the axis of the connecting shaft 44 extends in the front-to-back direction. A gear 45 is fixedly mounted on the connecting shaft 44, and the gear 45 meshes with the rack 41. When the cylinder 42 drives the movable frame 43 to move in the left-right direction, the rack 41 can drive the gear 45 to rotate, thereby causing the connecting shaft 44 to rotate. A cam 46 is fixedly mounted on the front end of the connecting shaft 44, and when the connecting shaft 44 rotates, the connecting shaft 44 can drive the cam 46 to rotate synchronously.

[0054] A connecting rod 47 is also fixedly installed on the movable frame 43. The axis of the connecting rod 47 is arranged horizontally left and right, that is, the connecting rod 47 is parallel to the driving rod 23. A push plate 48 is fixedly installed on the end of the connecting rod 47 away from the movable frame 43. The push plate 48 is an annular structure, and the push plate 48 is coaxially arranged with the driving rod 23. The driving rod 23 passes through the through hole on the inner side of the push plate 48. When the movable frame 43 moves left and right, it can drive the push plate 48 to move left and right.

[0055] like Figure 3 、 Figure 6 and Figure 7 As shown, the pushing assembly includes a bearing seat 50 , a third spring 51 , a side plate 52 , a rotating seat 53 , a swing frame 54 , an abutting portion 55 , a rotating portion 56 and a rotating wheel 57 .

[0056] A bearing seat 50 is slidably mounted on the outer side of the driving rod 23. The bearing seat 50 is located on the right side of the rotating drum 20. The bearing seat 50 is a circular structure and can slide along the axial direction of the driving rod 23. In this embodiment, the bearing seat 50 and the driving rod 23 cooperate with each other through a sliding groove and a slider. That is, a long sliding groove is provided on the outer side wall of the driving rod 23, and the length direction of the sliding groove is parallel to the axial direction of the driving rod 23. The bearing seat 50 is provided with a slider that is compatible with the sliding groove, and the slider slides in the sliding groove, so that the bearing seat 50 can slide along the axial direction of the driving rod 23. At the same time, the driving rod 23 can drive the bearing seat 50 to rotate.

[0057] A side plate 52 is fixedly mounted on the drive rod 23 to the right of the support seat 50, and a third spring 51 is disposed between the side plate 52 and the support seat 50. One end of the third spring 51 is fixedly connected to the support seat 50, and the other end is fixedly connected to the side plate 52. The third spring 51 provides elastic force to reset the support seat 50. The push plate 48 abuts against the left side of the support seat 50. When the push plate 48 moves to the right, it pushes the support seat 50 to slide to the right.

[0058] Four rotating seats 53 are provided along the circumference of the outer wall of the support seat 50. The rotating seats 53 are respectively arranged in a one-to-one correspondence with the material support seats 22 on the rotating drum 20. A swing frame 54 is rotatably mounted on each rotating seat 53 via a rotating shaft. The rotating shaft is provided with a torsion spring. That is, one end of the torsion spring is connected to the rotating seat 53 and the other end is connected to the swing frame 54. The torsion spring can provide elastic force to reset the swing frame 54.

[0059] The swing frame 54 includes an abutment portion 55 and a rotation portion 56. The abutment portion 55 is a horizontally arranged plate-like structure, and the rotation portion 56 is composed of two parallel, long, strip-shaped rods spaced apart from each other. The rotation portion 56 is fixedly mounted on the right side of the abutment portion 55. In this embodiment, the rotation portion 56 is arranged at an angle, that is, the rotation portion 56 gradually moves away from the axis of the drive rod 23 from left to right.

[0060] The rotating seat 53 is located inside the rotating portion 56, and the front and rear ends of the rotating shaft on the rotating seat 53 are fixedly connected to the two long strips of the rotating portion 56. A rotating wheel 57 is rotatably mounted on the side of the rotating portion 56 away from the abutment portion 55. The outer peripheral wall of the rotating wheel 57 has an inwardly concave annular groove, which enables the rotating wheel 57 to support the pipe 16.

[0061] When the pipe 16 needs to be bent, the cylinder 42 drives the movable frame 43 to move to the right first, so that the cam 46 abuts against the abutment 55 of the uppermost swing frame 54, and then as the cylinder 42 drives the movable frame 43 to continue to move to the right, the gear 45 engages with the rack 41, and the rack 41 can drive the gear 45 to rotate, thereby causing the connecting shaft 44 to rotate, and the connecting shaft 44 drives the cam 46 to rotate synchronously. During the rotation process, the cam 46 continuously pushes downward the abutment 55 of the swing frame 54, and the swing frame 54 can continuously swing back and forth around the rotating shaft on the swivel seat 53, that is, the swing frame 54 can drive the rotating wheel 57 to continuously swing up and down. When the rotating wheel 57 moves upward, it will pass through the blanking channel 14 and extend into the storage chamber 13. Therefore, if the pipe 16 in the storage chamber 13 is retained in the blanking channel 14, the wheel 57 continuously pushes the pipe 16 upward so that the pipe 16 can smoothly fall into the blanking channel 14. Finally, when the wheel 57 descends and resets, the left part of the pipe 16 is located in the uppermost supporting seat 22 of the rotating drum 20, and the right part of the pipe 16 is lifted by the uppermost wheel 57.

[0062] When the push plate 48 moves to the right, it can push the bearing seat 50 to slide to the right, and the third spring 51 will be compressed, that is, all the swing frames 54 and the rotating wheel 57 slide to the right at the same time, but only the uppermost swing frame 54 swings.

[0063] Then the cylinder 42 drives the movable frame 43 to move to the left and reset. The cam 46 moves to the leftmost side and disengages from the abutment portion 55 of the swing frame 54. The elastic force of the third spring 51 is released, driving the bearing seat 50 to move to the left and reset.

[0064] like Figure 7 As shown, the bending module includes a chassis 60, a guide protrusion 61 and a bending wheel 62. The chassis 60 is fixedly mounted at the bending opening 15 on the front side of the housing 10, arranged horizontally, and a portion of the chassis 60 extends through the bending opening 15 into the working chamber 12.

[0065] A bending wheel 62 is rotatably mounted on the chassis 60. The bending wheel 62 rotates along a vertical axis, with the rear edge of the bending wheel 62 extending through the bending opening 15 into the working chamber 12. A guide protrusion 61 is provided on the upper surface of the chassis 60, near the right side. This guide protrusion 61 is arc-shaped, and the rear portion of the guide protrusion 61 extends through the bending opening 15 into the working chamber 12. Specifically, the guide protrusion 61 is located in the travel path of the frontmost rotating wheel 57.

[0066] When the pipe 16 passes through the blanking channel 14 and reaches the top support 22 and the top rotating wheel 57, and the cylinder 42 drives the movable frame 43 to move to the left and reset, the elastic force of the third spring 51 is released, driving the supporting frame 50 to move to the left and reset. The driving rod 23 drives the drum 20 to rotate 90 degrees to the front side, and the driving rod 23 also drives the supporting frame 50 to rotate synchronously to the front side. The supporting frame 22 and the rotating wheel 57 originally located at the top reach the front position after rotation, that is, the supporting frame 22 and the rotating wheel 57 drive the pipe 16 located above them to the front position, and then the cylinder 42 drives the movable frame 43 to continue to move to the right, and the loading continues according to the above principle, so that the pipe 16 falls back on the top support 22 and the top rotating wheel 57 after passing through the blanking channel 14. As the front wheel 57 moves to the right, it abuts against the guide protrusion 61, forcing the wheel 57 to move forward along the trajectory of the guide protrusion 61. That is, the front wheel 57 pushes the pipe 16, which is now located at the front, forward, cooperating with the bending wheel 62 to complete the bending process of the pipe 16. The right side of the pipe 16 passes through the bending opening 15 and is bent to the front. The bent pipe 16 is then removed, and the cycle continues. The insert plate 37 and the slot 32 are specifically provided to secure the support 22, preventing the left side of the pipe 16 from being displaced and causing an impact when the pipe 16 is bent.

[0067] The working principle of the present invention is as follows: when the pipe 16 needs to be bent, the cylinder 42 drives the movable frame 43 to move to the right first, so that the cam 46 abuts against the abutment 55 of the uppermost swing frame 54, and then as the cylinder 42 drives the movable frame 43 to continue to move to the right, the gear 45 engages with the rack 41, and the rack 41 can drive the gear 45 to rotate, thereby causing the connecting shaft 44 to rotate, and the connecting shaft 44 drives the cam 46 to rotate synchronously. During the rotation process, the cam 46 continuously pushes downward the abutment 55 of the swing frame 54, and the swing frame 54 can continuously swing back and forth around the rotating shaft on the swivel seat 53, that is, the swing frame 54 can drive the rotating wheel 57 to continuously swing up and down, and when the rotating wheel 57 moves upward, it will pass through the blanking channel 14 and extend into the storage chamber 13. Therefore, if the pipe 16 in the storage chamber 13 is retained in the blanking channel 14, the rotating wheel 57 continuously pushes upward so that the pipe 16 can smoothly fall into the blanking channel 14. Finally, when the rotating wheel 57 is lowered and reset, the left part of the pipe 16 is located in the uppermost support seat 22 of the rotating drum 20, and the right part of the pipe 16 is lifted by the uppermost rotating wheel 57. When the pushing plate 48 moves to the right, it can push the supporting seat 50 to slide to the right, and the third spring 51 will be compressed, that is, all the swinging frames 54 and the rotating wheel 57 slide to the right at the same time, but only the uppermost swinging frame 54 swings. Then the cylinder 42 drives the moving frame 43 to move to the left and reset. The cam 46 moves to the leftmost side and disengages from the abutment portion 55 of the swinging frame 54. The elastic force of the third spring 51 is released, driving the supporting seat 50 to move to the left and reset. The driving rod 23 drives the rotating drum 20 to rotate 90 degrees to the front side, and the driving rod 23 also drives the supporting seat 50 to rotate synchronously to the front side. The supporting seat 22 and the rotating wheel 57 originally located at the top reach the front position after rotation, that is, the supporting seat 22 and the rotating wheel 57 drive the pipe fittings 16 located above them to move to the front position, and then the cylinder 42 drives the moving frame 43 to continue to move to the right, and the loading is continued according to the above principle, so that the pipe fittings 16 pass through the blanking channel 14 and fall back on the supporting seat 22 and the topmost rotating wheel 57. When the front wheel 57 moves to the right, it abuts against the guide protrusion 61, thereby forcing the wheel 57 to move forward along the trajectory of the guide protrusion 61. That is, the front wheel 57 will push the pipe 16 located at the front side to the front side, and cooperate with the bending wheel 62 to complete the bending process of the pipe 16. The right side part of the pipe 16 will pass through the bending opening 15 and be bent to the front side, and then the bent pipe 16 will be taken out, and the cycle can be repeated.

[0068] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A metal tube bending device comprising: The casing has a working chamber and a material storage chamber that are interconnected, and a bent opening on the front side of the working chamber. The casing is characterized in that a material supporting module and a bending module are also provided on the casing; The material supporting module includes a rotating drum rotating in the working chamber, a plurality of material supporting seats are provided on the circumferential direction of the rotating drum, and a driving rod coaxial with the rotating drum is also rotatably installed in the working chamber; a bearing seat is axially elastically and slidably connected to the driving rod, and a plurality of swinging frames corresponding to the material supporting seats are circumferentially rotated on the bearing seat, and the swinging frames can perform pitching and swinging, and a rotating wheel is rotated on each of the swinging frames, and the swinging frames can drive the rotating wheel to move up and down, so that the rotating wheel can extend into the material storage chamber when it rises, and can drive the single tube to be placed in the working chamber when it descends; The bending module includes a chassis arranged at the bending opening, with a guide protrusion on the chassis and a bending wheel rotatably mounted on the chassis. When the front wheel moves, it abuts against the guide protrusion to cooperate with the bending wheel to bend the pipe.

2. A metal tube bending device according to claim 1, characterized in that: A mounting platform is fixedly provided in the working chamber, a telescopic part is provided on the mounting platform, a movable frame is fixedly provided on the telescopic part of the telescopic part, a connecting shaft which is rotatably installed on the movable frame and is matched with the mounting platform for transmission, a cam is provided on the connecting shaft, a rack is fixedly installed on the upper surface of the mounting platform, the rack extends along the length direction of the driving rod, a gear is fixedly installed on the connecting shaft, and the gear is meshed with the rack.

3. The metal tube bending device according to claim 2, characterized in that: A push plate is fixedly mounted on the movable frame. The push plate is an annular structure and is coaxially arranged with the driving rod. The driving rod passes through a through hole on the inner side of the push plate.

4. The metal tube bending device according to claim 1, characterized in that: A plurality of rotating seats are provided on the outer wall of the bearing seat along its circumference. The swing frame is rotatably mounted on the rotating seat via a rotating shaft. A torsion spring is sleeved on the outer side of the rotating shaft. One end of the torsion spring is connected to the rotating seat, and the other end is connected to the swing frame.

5. The metal tube bending device according to claim 2, characterized in that: The swing frame comprises an abutting portion and a rotating portion. The cam can contact the abutting portion to push the swing frame to swing. The rotating wheel is rotatably mounted on the rotating portion.

6. A metal tube bending device according to any one of claims 1 to 5, characterized in that: An inwardly recessed annular groove is provided on the outer peripheral wall of the rotating wheel so that the rotating wheel can support the pipe.

7. The metal tube bending device according to claim 6, characterized in that: A sliding column is fixed on the material supporting seat, and the sliding column is radially elastically slidably fitted on the rotating drum. A plurality of slots are arranged on the sliding column along its axial intervals. A connecting chamber is opened on the rotating drum at a position corresponding to each material supporting seat. The moving end of the sliding column penetrates into the corresponding connecting chamber. An electromagnetic plate is fixedly installed in the connecting chamber. The electromagnetic plate is elastically slidably fitted with a sliding seat made of metal. The moving direction of the sliding seat is perpendicular to the axis of the sliding column. An insert plate is provided on the moving side of the sliding seat, and the insert plate is adapted to the slot.

8. The metal tube bending device according to claim 7, characterized in that: The guide protrusion is an arc-shaped structure, and the rear part of the guide protrusion extends into the working cavity through the bent opening. The guide protrusion is located on the moving path of the frontmost wheel.

9. The metal tube bending device according to claim 8, characterized in that: The material storage chamber and the working chamber are arranged up and down, and a material drop channel is formed at the connection between the two. The cross section of the working chamber is circular.

10. The metal tube bending device according to claim 1, characterized in that: The bearing surface of the material supporting seat is an inwardly concave arc structure.

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