A left and right co-bending pipe machine

Abstract

The application provides a left-right co-bending pipe bending machine, which comprises a workbench, a feeding mechanism arranged on the workbench, a left-right co-bending mechanism arranged on one side of the workbench and located on the feeding direction of the feeding mechanism, a pipe is conveyed to the left-right co-bending mechanism through the feeding mechanism, and the pipe is subjected to pipe bending processing by the left-right co-bending mechanism; wherein the left-right co-bending mechanism comprises a swing plate arranged in rotation, a machine box rotatably connected with the swing plate at a position away from the rotating end, a pipe bending shaft rotatably arranged on one side of the machine box, and a swing arm arranged on the pipe bending shaft; the pipe bending shaft is provided with a die at both ends; the swing arm is movably provided with a die on both sides; the dies on both sides of the swing arm are correspondingly arranged with the dies at both ends of the pipe bending shaft, so that when the pipe is arranged between the dies and the dies, the pipe is clamped and fixed by the dies and the dies; the left-right pipe bending of the pipe can be quickly switched on the same equipment, and the interference during the pipe bending of the complex pipe is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of pipe bending equipment, in particular to a left-right co-bending pipe bending machine. BACKGROUND

[0002] The current pipe bending equipment can only process the left or right bending of the pipe, and when switching to the bending direction of the other side, the pipe needs to be taken out from the processing equipment by artificial or mechanical hand, and the processing equipment needs to be replaced or the pipe needs to be reloaded into the equipment after being reversed, so the switching process is not only complex and inefficient, but also causes a certain position error between the secondary processing of the pipe and the previous processing due to the disconnection of the equipment, which is not conducive to the pipe bending effect, and when the pipe is partially processed, the position and direction of the pipe are changed, which is extremely easy to cause interference between the pipe and the equipment, and further causes damage to the pipe. SUMMARY

[0003] The purpose of the present application is to provide a left-right co-bending pipe bending machine which can quickly switch the left and right bending of the pipe on the same equipment and reduce the interference during the bending of complex pipes.

[0004] To solve the above technical problems, the present application provides a left-right co-bending pipe bending machine, which comprises a workbench, a feeding mechanism arranged on the workbench, a left-right co-bending mechanism arranged on one side of the workbench and located in the feeding direction of the feeding mechanism, a pipe is conveyed to the left-right co-bending mechanism by the feeding mechanism, and the pipe is bent by the left-right co-bending mechanism; wherein the left-right co-bending mechanism comprises a swing plate arranged in rotation, a machine box rotatably connected to the position away from the rotation end of the swing plate, a bending shaft rotatably arranged on one side of the machine box, and a swing arm arranged on the bending shaft, the bending shaft has a mold holder at both ends, and the mold holder at both ends of the bending shaft is movably arranged on both sides of the swing arm, and the mold holder at both ends of the swing arm is arranged correspondingly with the mold holder at both ends of the bending shaft, so that when the pipe is placed between the mold holder and the mold holder, it is clamped and fixed by the mold holder and the mold holder.

[0005] Further, a mold guide box is arranged on one side of the machine box, the mold guide box is arranged in parallel with the swing arm, mold guide assemblies are arranged on both sides of the mold guide box, the mold guide assemblies comprise a mold guide base movably arranged on the mold guide box, an auxiliary push plate movably connected to the mold guide base, and a mold arranged on the auxiliary push plate, the mold is arranged on one side of the bending position of the pipe, and the moving direction of the mold guide base is consistent with the moving direction of the mold, the auxiliary push plate moves along the axial direction of the pipe, so that when the bending shaft drives the mold holder and the mold holder to bend the pipe, the mold pushes the pipe along the axial direction of the pipe.

[0006] Further, the two sides of the swing arm are provided with oppositely arranged mold clamping assemblies, the mold clamping assembly comprises a movable mold clamping base arranged on the swing arm, a mold clamping backrest arranged on the mold clamping base, and a mold clamping block connected to the mold clamping backrest, and the moving direction of the mold clamping base is consistent with the moving direction of the mold guide base.

[0007] Further, the swing arm is internally provided with a first transmission assembly, the mold guide box is internally provided with a second transmission assembly, and the first transmission assembly and the second transmission assembly are the same in structure; wherein the first transmission assembly comprises at least two oppositely arranged transmission components, the transmission component comprises a rotatingly arranged ball screw, a screw nut arranged on the outer periphery of the ball screw, and a nut seat arranged on one side of the screw nut, the screw nut is threadedly connected with the ball screw, the nut seat in the first transmission assembly is connected with the mold clamping base, and the nut seat in the second transmission assembly is connected with the mold guide base.

[0008] Further, the mold clamping assembly further comprises a first guide rail arranged on the swing arm, and the mold clamping base is movably connected with the first guide rail; the mold guide assembly further comprises a second guide rail arranged on the mold guide box, and the mold guide base is movably connected with the second guide rail.

[0009] Further, the first transmission assembly further comprises a driving member, a driving wheel connected to the output end of the driving member, and a driven wheel rotatably arranged on both sides of the driving wheel and engaged with the driving wheel, and the ball screws in the at least two oppositely arranged transmission components are respectively connected with the driven wheels on both sides of the driving wheel.

[0010] Further, the two sides of the nut seat are respectively provided with first and second limiting blocks.

[0011] Further, the two ends of the pipe bending shaft are connected with a round mold seat, the mold back is placed on the round mold seat away from the pipe bending shaft, and the end of the round mold seat away from the pipe bending shaft is provided with a fixing member.

[0012] Further, the feeding mechanism comprises a movable feeding platform arranged on the workbench, and a feeding seat connected to the feeding platform, one end of the feeding seat is provided with a plurality of material clamps, and the plurality of material clamps clamp the pipe along the outer periphery of the pipe.

[0013] Further, one end of the feeding seat is rotatably provided with a rotating seat, and the plurality of material clamps are connected to the feeding seat through the rotating seat, so that the plurality of material clamps can drive the pipe to rotate along the central axis of the pipe.

[0014] The beneficial effects of the present application are:

[0015] 1. Since the two ends of the pipe bending shaft are provided with the mold back, and the two sides of the swing arm are provided with the mold clamping, under the rotating cooperation of the swing plate and the machine box, the mold back at the two ends of the pipe bending shaft and the mold clamping at the two sides of the swing arm can clamp and bend the pipe respectively, and the pipe can be switched left and right, so that the same equipment can perform left and right pipe bending operations on the pipe.

[0016] 2. Since only the end of the bending shaft and the side of the machine are switched when switching the left and right bends of the pipe fittings, there is no need to reverse or change the position of the pipe fittings. Therefore, the position of the pipe fittings is accurate, which increases the bending effect.

[0017] 3. The first transmission assembly and the second transmission assembly can accurately control the clamping mold base and the guide mold base to ensure the stability of clamping and loosening when the pipe is bent to the left or right.

[0018] 4. The design of the clamping mold support and the round mold base allows for quick replacement of the clamping mold and the support mold, increasing the adaptability to pipe fittings of different specifications. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention.

[0020] Figure 2 This is a schematic diagram of the invention in a left-bending state.

[0021] Figure 3 This is the present invention. Figure 2 A magnified view of a portion of point A in the middle.

[0022] Figure 4 This is a schematic diagram of the invention in a right-bend state.

[0023] Figure 5 This is the present invention. Figure 4 A magnified view of a portion of point A in the middle.

[0024] Figure 6 This is a schematic diagram of the swing arm structure in this invention.

[0025] Figure 7 This is a schematic diagram of the structure of the first transmission component of the present invention.

[0026] Figure 8 This is a schematic diagram of the structure of the guide mold box in this invention.

[0027] Figure 9 This is a schematic diagram of the structure of the second transmission component of the present invention.

[0028] Figure 10 This is a schematic diagram of the chassis of the present invention.

[0029] Figure 11 This is a schematic diagram of the feeding platform of the present invention.

[0030] Figure 12 This is a schematic diagram of the feeding base of the present invention.

[0031] Reference: 1, workbench; 2, feeding mechanism; 21, feeding platform; 22, feeding seat; 23, material clamp; 24, rotating seat; 3, left and right bending mechanism; 31, swing plate; 32, machine box; 33, pipe bending shaft; 34, swing arm; 35, template; 36, clamp mold; 37, guide mold box; 38, guide mold base; 39, auxiliary push plate; 310, guide mold; 311, clamp mold base; 312, clamp mold backstop; 313, ball screw; 314, screw nut; 315, nut seat; 316, first guide rail; 317, second guide rail; 318, driving piece; 319, driving wheel; 320, driven wheel; 321, first limit block; 322, second limit block; 323, round mold base; 324, fixing piece; 4, pipe fitting. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art belong to the scope of protection of the present application.

[0033] Those skilled in the art should understand that in the disclosure of the present application, the orientations or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the above terms cannot be understood as a limitation on the present application.

[0034] It can be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of one element can be one, and in another embodiment, the number of the element can be multiple, and the term "one" cannot be understood as a limitation on the number.

[0035] As Figures 1-12The left-right co-bending pipe machine comprises a workbench 1, a feeding mechanism 2 arranged on the workbench 1, a left-right co-bending mechanism 3 arranged on one side of the workbench 1 and located in the feeding direction of the feeding mechanism 2, a pipe 4 conveyed to the left-right co-bending mechanism 3 by the feeding mechanism 2, and the pipe 4 is bent by the left-right co-bending mechanism 3; wherein the left-right co-bending mechanism 3 comprises a swing plate 31 arranged in rotation, a machine box 32 rotationally connected with the swing plate 31 at a position away from the rotating end, a bending shaft 33 rotationally arranged on one side of the machine box 32, a swing arm 34 arranged on the bending shaft 33, the bending shaft 33 has a clamping die 35 at both ends, and the swing arm 34 has a clamping die 36 movably arranged on both sides, and the clamping die 36 on both sides of the swing arm 34 is arranged corresponding to the clamping die 35 at both ends of the bending shaft 33, so that when the pipe 4 is placed between the clamping die 36 and the clamping die 35, it is clamped and fixed by the clamping die 36 and the clamping die 35.

[0036] Specifically, the pipe to be processed is moved to one end of the feeding mechanism by a mechanical arm or manually, and the pipe is clamped and conveyed by the feeding mechanism. After the pipe is conveyed to the set bending position by the feeding mechanism, the left-right co-bending mechanism bends the pipe. At this time, the swing plate is rotationally matched with the machine box, so that the clamping die and the clamping die are arranged on both sides of the pipe bending position. Then the machine box is rotated relative to the swing plate, so that the machine box drives the clamping die on the bending shaft to approach the pipe position, and the clamping die is attached to one side of the pipe. At the same time, the clamping die moves along the swing arm, so that the clamping die cooperates with the clamping die to clamp and fix the bending position of the pipe. Then the bending shaft drives the swing arm to rotate and move by an angle, so that the clamping die and the clamping die bend the pipe by a certain angle, and the bending of the pipe at this position is completed. When the pipe at this position is bent and needs to be bent at the next position, the clamping die is moved to the initial position for resetting. Then the machine box is reversely rotated relative to the swing plate to drive the clamping die away from the pipe position, and the bending shaft drives the swing arm to rotate and reset. At this time, the clamping die and the clamping die are both at the initial position. Then the pipe is conveyed by the feeding mechanism to the next bending position, and the pipe is continuously bent by the above steps.

[0037] It is worth mentioning that when the left and right pipe switching is needed, the clamp mold is first moved to the initial position along the swing arm away from the pipe, and in the case that the mold and the clamp mold are both in the initial position, the swing plate and the case are in the right bending state, and the right bending is switched to the left bending state as follows: the swing plate is counterclockwise, the case is clockwise (this step makes the swing plate drive the bending shaft and the mold away from the pipe, and the clockwise rotation of the case can move the parts on the case to the position close to the swing plate at the rotating end of the workbench, i.e. reduce the rotating radius of the swing plate driving the case to rotate, to ensure that the swing plate can smoothly drive the case and the parts on it to pass under the pipe), the swing plate is clockwise, the case is clockwise (the clockwise rotation of the swing plate in this step is used to drive the case and the parts to pass under the pipe, and then the clockwise rotation of the case is used to drive the mold and the clamp mold to the position in the left bending state), the swing plate is counterclockwise, the case is counterclockwise (the counterclockwise rotation of the swing plate in this step is used to drive the mold and the clamp mold to approach the pipe, and the counterclockwise rotation of the case is used to drive the mold to the side of the pipe, and wait for the clamp mold to approach the pipe, i.e. the pipe can be clamped and fixed); and the left bending state is switched to the right bending state by repeating the above steps in reverse.

[0038] In particular, the workbench is built-in with a servo motor and a speed reducer connected to one end of the swing plate, and the other end of the swing plate is connected to the rotating position of the case, and the case is built-in with a servo motor and a speed reducer connected to the swing plate, so that the two ends of the swing plate are respectively connected to the workbench and the case.

[0039] In the preferred embodiment of the present scheme, due to the rotation of the swing plate and the case, the case can be accurately and quickly positioned within a certain angle range relative to the swing plate, and the case can be rotated at multiple angles, thereby performing pipe bending in an inclined state and reducing the interference between the case and the pipe during complex pipe bending.

[0040] In addition, in the present scheme, the mold on the end of the bending shaft is provided with multiple layers in the axial direction of the bending shaft, and the clamp mold is also provided with multiple layers to ensure the matching between the clamp mold and the mold. Different mold layers of the clamp mold and the mold correspond to different specifications of the pipe, so that different mold layers can be replaced according to the different specifications of the bending pipe. During the swinging process of the swing plate, the height of the case can be adjusted, and at the same time, the case can be rotated relative to the swing plate, so that the case can rotate the clamp mold and the mold of different mold layers to the position coaxial with the pipe, thereby realizing the replacement of different mold layers of the bending pipe.

[0041] Meanwhile, the case is internally provided with a servo motor for controlling rotation of the bending shaft, and the servo motor is also connected with a speed reducer, so that rotation of the bending shaft is controlled by the servo motor and the speed reducer, thereby ensuring stable and accurate rotation of the bending shaft and the swing arm.

[0042] The side of the clamping die close to the pipe has a semicircular groove, and the side of the backing die close to the pipe has an arc-shaped semicircular groove along the outer periphery of the backing die, so that the clamping die and the backing die can clamp and fix the outer periphery of the pipe when clamping, and the backing die is located on the inner side of the pipe bending position when the pipe is bent, that is, the pipe bending angle is consistent with the rotation angle of the bending shaft.

[0043] Preferably, the case 32 is provided with a guide die box 37 arranged in parallel with the swing arm 34, and the guide die box 37 is provided with oppositely arranged guide die assemblies on both sides. The guide die assembly comprises a movable guide die base 38 arranged on the guide die box 37, a auxiliary push plate 39 movably connected to the guide die base 38, and a guide die 310 arranged on the auxiliary push plate 39. The guide die 310 is arranged on the side of the pipe bending position, and the moving direction of the guide die base 38 is consistent with the moving direction of the clamping die 36. The auxiliary push plate 39 moves along the axial direction of the pipe 4, so that when the clamping die 36 and the backing die 35 drive the pipe 4 to bend by the bending shaft 33, the guide die 310 assists in pushing the pipe 4 along the axial direction.

[0044] Specifically, since the pipe will arch outward on the side close to the feeding mechanism when bending, the guide die can assist in guiding and limiting the position of the pipe to avoid arching.

[0045] It is worth mentioning that when the clamping die and the backing die clamp and fix the pipe, the guide die base moves synchronously along the guide die box, drives the auxiliary push plate and the guide die thereon to approach the pipe, so that one side of the guide die is attached to the pipe. When the pipe is bent, the clamping die rotates along the axis of the bending shaft, and at this time, the guide die is pushed by the auxiliary push plate to move the side of the pipe slightly, which cooperates with the feeding mechanism to drive the pipe to move slightly, so as to ensure the accuracy of the bending position and avoid damage caused by excessive tension on the pipe.

[0046] When the bending is completed and the clamping die moves away from the pipe to reset, the guide die base drives the auxiliary push plate and the guide die to reset, and the auxiliary push plate drives the guide die to reset, so that the guide die and the clamping die also retreat to the initial position, facilitating subsequent bending processing.

[0047] Particularly, when the auxiliary pushing plate drives the guide die to push the pipe, the moving direction of the auxiliary pushing plate is towards the position of the clamp die, and since the clamp die rotates along the bending pipe axis at this time, the auxiliary pushing plate and the guide die will not interfere with the clamp die and the swing arm.

[0048] In the preferred embodiment of the present scheme, a servo motor and a speed reducer are connected to one side of the guide die base, and the connection between the guide die base and the auxiliary pushing plate has a guide rail, and the servo motor and the speed reducer on the guide die base control the movement of the auxiliary pushing plate along the guide rail.

[0049] Preferably, the swing arm 34 is provided with oppositely arranged clamp die assemblies on both sides, which include a movable clamp die base 311 arranged on the swing arm 34, a clamp die back 312 arranged on the clamp die base 311, and a clamp die 36 connected to the clamp die back 312. The moving direction of the clamp die base 311 is consistent with that of the guide die base 38.

[0050] Specifically, the clamp die is connected to the clamp die back, and when the clamp die needs to clamp or move away from the pipe, the clamp die back and the clamp die are moved by moving the clamp die base along the swing arm, thereby ensuring the stable clamping effect of the clamp die on the pipe.

[0051] Preferably, the swing arm 34 is provided with oppositely arranged clamp die assemblies on both sides, which include a movable clamp die base 311 arranged on the swing arm 34, a clamp die back 312 arranged on the clamp die base 311, and a clamp die 36 connected to the clamp die back 312. The moving direction of the clamp die base 311 is consistent with that of the guide die base 38.

[0052] Specifically, the clamp die is connected to the clamp die back, and when the clamp die needs to clamp or move away from the pipe, the clamp die back and the clamp die are moved by moving the clamp die base along the swing arm, thereby ensuring the stable clamping effect of the clamp die on the pipe.

[0053] Preferably, the swing arm 34 is provided with oppositely arranged clamp die assemblies on both sides, which include a movable clamp die base 311 arranged on the swing arm 34, a clamp die back 312 arranged on the clamp die base 311, and a clamp die 36 connected to the clamp die back 312. The moving direction of the clamp die base 311 is consistent with that of the guide die base 38.

[0054] Specifically, when the mold clamping base and the mold guiding base move through the nut seat, the first guide rail and the second guide rail guide the mold clamping base and the mold guiding base respectively, so that the moving direction of the mold clamping base and the mold guiding base is accurate.

[0055] Preferably, the first transmission assembly further comprises a driving member 318, a driving wheel 319 connected to the output end of the driving member 318, and a driven wheel 320 rotatably arranged on both sides of the driving wheel 319 and engaged with the driving wheel 319. The ball screw 313 in the at least two transmission components arranged oppositely is connected to the driven wheels 320 on both sides of the driving wheel 319.

[0056] Specifically, when the mold clamping base and the mold guiding base move through the ball screw, first, the driving member drives the driving wheel to rotate, then the driving wheel drives the driven wheel engaged therewith to rotate, and because the driven wheel is connected to the ball screw, the driving wheel can further drive the ball screw to rotate, thereby controlling the movement of the mold clamping base and the mold guiding base.

[0057] Preferably, the driving member comprises a servo motor and a speed reducer, and the output end of the speed reducer is connected to the driving wheel, so that the rotation of the driving wheel can be controlled by the servo motor.

[0058] Preferably, the nut seat 315 is provided with a first limiting block 321 and a second limiting block 322 on both sides.

[0059] Specifically, the mold clamping base and the mold guiding base can be moved through the ball screw and the nut seat. At this time, through the arrangement of the first limiting block and the second limiting block on both sides of the nut seat, when the nut seat moves to one end of the distance, the first limiting block will abut against the inner wall of the mold guiding box or the swing arm, so that the nut seat cannot continue to move, thereby controlling the movement distance of the mold clamping base and the mold guiding base. Similarly, when the nut seat moves the mold clamping base and the mold guiding base in the opposite direction, the second limiting block can limit the nut seat, thereby increasing the limiting effect of the movement stroke of the mold clamping base and the mold guiding base.

[0060] Preferably, the pipe bending shaft 33 is connected with a round mold seat 323 at both ends, the mold 35 is placed on the round mold seat 323 away from the pipe bending shaft 33, and the end of the round mold seat 323 away from the pipe bending shaft 33 is provided with a fixing member 324.

[0061] Specifically, when the mold is installed at both ends of the pipe bending shaft, the mold is connected by inserting the mold into the position of the round mold seat, and then the fixing member is fixed to the end of the round mold seat away from the pipe bending shaft, so that the fixing member limits and fixes the mold, ensuring the stability of the mold during use.

[0062] The center position of the circular die seat is provided with a screw rod, the screw rod is inserted into the screw rod, and the end of the screw rod away from the elbow pipe shaft is connected with a fixing part.

[0063] Preferably, the feeding mechanism 2 comprises a movable feeding platform 21 arranged on the workbench 1, and a feeding seat 22 connected to the feeding platform 21, wherein the feeding seat 22 is provided with a plurality of material clamps 23 at one end, and the plurality of material clamps 23 clamps the pipe 4 along the outer periphery of the pipe 4.

[0064] Specifically, after the pipe is moved to the position to be processed by the mechanical arm or manually, the plurality of material clamps is moved along the axial direction of the pipe under the driving of the feeding seat, so that the plurality of material clamps is moved to the clamping position of the pipe, and then the plurality of material clamps is closed to the pipe along the radial direction, so that the plurality of material clamps clamps and fixes the pipe. At this time, the pipe can be conveyed to the elbow pipe processing position by the feeding seat and the plurality of material clamps through the movement of the feeding platform along the workbench.

[0065] The tightening and loosening of the material clamp is controlled by a cylinder, and the specific control method can be similar to the existing machine tool clamping jaw and the existing pipe clamping jaw, which will not be described in detail here.

[0066] It is worth mentioning that the surface of the workbench is provided with a guide rail, and the feeding platform moves along the guide rail through the transmission of the gear and rack.

[0067] Preferably, the feeding seat 22 is rotatably provided with a rotating seat 24 at one end, and the plurality of material clamps 23 is connected to the feeding seat 22 through the rotating seat 24, so that the plurality of material clamps 23 can drive the pipe 4 to rotate along the central axis of the pipe 4.

[0068] Specifically, after the pipe is clamped by the plurality of material clamps, the pipe can be circumferentially rotated by the rotating seat through the rotating mode of the rotating seat relative to the feeding seat, so that the bending angle of the pipe is more diversified.

[0069] The present application is not limited to the above-mentioned best embodiment, and anyone can derive other various forms of products under the inspiration of the present application, but regardless of any changes in shape or structure, any technical solution with the same or similar technical solution as the present application falls within the protection scope of the present application.

Claims

1. A left and right co-bending pipe bender characterized by: The utility model provides a kind of pipe bending machine, including workbench (1), feeding mechanism (2) being arranged on workbench (1), left and right co-bending mechanism (3) being arranged on the side of workbench (1) and being located in the feeding direction of feeding mechanism (2), pipe (4) is transported to left and right co-bending mechanism (3) by feeding mechanism (2), and pipe (4) is bent by left and right co-bending mechanism (3);Wherein, left and right co-bending mechanism (3) includes rotationally arranged swing plate (31), the position of machine case (32) being rotationally connected with swing plate (31) away from rotating end, the bending pipe shaft (33) being rotatably arranged on the side of machine case (32), the swing arm (34) being arranged on bending pipe shaft (33), the bending pipe shaft (33) both ends have mould (35), the mould (36) being movably arranged on the both sides of swing arm (34), and the mould (36) on the both sides of swing arm (34) and the mould (35) on the both ends of bending pipe shaft (33) are correspondingly arranged, so that pipe (4) is placed between mould (36) and mould (35), and is clamped and fixed by mould (36) and mould (35); The mould of the both ends of bending pipe shaft is arranged in multiple layers along the axial direction of bending pipe shaft, and the mould is also arranged in multiple layers, the mould and the mould of different layers correspond to different specifications of pipe, different layers are replaced according to the requirements of different specifications of pipe, and the height of machine case is adjusted during the swinging process of swing plate, and the machine case is rotated relative to swing plate, so that the machine case can rotate the mould and the mould of different layers to the coaxial position of pipe, to realize the replacement of different layers of pipe.

2. The left and right co-bending pipe machine according to claim 1, characterized in that: The side of machine case (32) is provided with a guide mould box (37), which is arranged in parallel with the swing arm (34). The guide mould box (37) is provided with oppositely arranged guide mould assemblies on both sides. The guide mould assembly includes a movable guide mould base (38) arranged on the guide mould box (37), a movable auxiliary push plate (39) connected to the guide mould base (38), and a guide mould (310) arranged on the auxiliary push plate (39). The guide mould (310) is arranged on the side of the pipe bending position of the pipe (4), and the moving direction of the guide mould base (38) is consistent with the moving direction of the mould (36). The auxiliary push plate (39) moves along the axial direction of the pipe (4), so that when the bending pipe shaft (33) drives the mould (36) and the mould (35) to bend the pipe (4), the guide mould (310) assists the pipe (4) along the axial direction of the pipe.

3. The left and right co-bending pipe machine according to claim 2, characterized in that: The swing arm (34) is provided with oppositely arranged mould assemblies on both sides. The mould assembly includes a movable mould base (311) arranged on the swing arm (34), a mould backstop (312) arranged on the mould base (311), and a mould (36) connected to the mould backstop (312). The moving direction of the mould base (311) is consistent with the moving direction of the guide mould base (38).

4. The left and right co-bending pipe bender according to claim 3, characterized in that: The swing arm (34) is internally provided with a first transmission assembly, the guide mold box (37) is internally provided with a second transmission assembly, and the first transmission assembly and the second transmission assembly are of the same structure; wherein the first transmission assembly comprises at least two transmission components arranged oppositely, the transmission component comprises a ball screw (313) arranged rotatably, a screw nut (314) sleeved on the outer periphery of the ball screw (313), a nut seat (315) arranged on one side of the screw nut (314), the screw nut (314) is in threaded connection with the ball screw (313), and the nut seat (315) in the first transmission assembly is connected with the mold clamping base (311), and the nut seat (315) in the second transmission assembly is connected with the guide mold base (38).

5. The left and right co-bending pipe bender according to claim 3, characterized in that: The mold clamping assembly further comprises a first guide rail (316) arranged on the swing arm (34), the mold clamping base (311) is movably connected with the first guide rail (316), and the guide mold assembly further comprises a second guide rail (317) arranged on the guide mold box (37), the guide mold base (38) is movably connected with the second guide rail (317).

6. The left and right co-bending pipe machine according to claim 4, characterized in that: The first transmission assembly further comprises a driving member (318), a driving wheel (319) connected to the output end of the driving member (318), a driven wheel (320) rotatably arranged on both sides of the driving wheel (319) and in meshing connection with the driving wheel (319), and the ball screws (313) in the at least two transmission components arranged oppositely are connected with the driven wheels (320) on both sides of the driving wheel (319) respectively.

7. The left and right co-bending pipe machine according to claim 4, characterized in that: The nut seat (315) is provided with a first limiting block (321) and a second limiting block (322) on both sides.

8. The left and right co-bending pipe bender according to claim 1, characterized by: The pipe bending shaft (33) is connected with a round mold seat (323) at both ends, the die holder (35) is placed on the round mold seat (323) away from the pipe bending shaft (33), and the end of the round mold seat (323) away from the pipe bending shaft (33) is provided with a fixing member (324).

9. The left and right co-bending pipe bender according to claim 1, characterized in that: The feeding mechanism (2) comprises a feeding platform (21) movably arranged on the workbench (1), and a feeding seat (22) connected to the feeding platform (21), one end of the feeding seat (22) is provided with a plurality of material clamps (23), and the plurality of material clamps (23) clamp the pipe (4) along the outer periphery of the pipe (4).

10. The left and right co-bending pipe machine according to claim 9, characterized in that: The feeding seat (22) is rotatably provided with a rotating seat (24) at one end, and the plurality of material clamps (23) are connected to the feeding seat (22) through the rotating seat (24), so that the plurality of material clamps (23) can drive the pipe (4) to rotate along the central axis thereof.

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