Pipe Bending Machine

Abstract

The present invention discloses a pipe bending machine, comprising: a frame, a flat pipe supporting mechanism, a pipe bending mechanism and a flat pipe following mechanism; the pipe bending mechanism comprises: a lower pipe bending die mechanism and an upper pressing die mechanism, the upper pressing die mechanism is suitable for pressing the flat pipe with the lower pipe bending die mechanism; the flat pipe following mechanism comprises: a follower, when the pipe bending mechanism rotates and bends the section to be bent, the flat pipe can drive the follower to move from a first position to a second position along the length direction of the second straight pipe section, in the first position, the follower is attached to the section to be bent and the second straight pipe section, in the second position, the follower is attached to the second straight pipe section. In this way, after the flat pipe is installed in the pipe bending mechanism, the follower is suitable for resisting and restricting one side of the flat pipe, which not only makes the assembly of the flat pipe in the pipe bending mechanism more reliable, but also makes the flat pipe bent by the pipe bending machine more in line with user needs. At the same time, since the follower is also suitable for restricting the flat pipe, the unbent part of the flat pipe has a higher straightness.

Description

Technical Field

[0001] The invention relates to the technical field of pipe bending, in particular to a pipe bending machine. Background Art

[0002] In the prior art, a pipe bender is suitable for bending a flat pipe to improve its performance. In the related art, a pipe bender is suitable for directly bending a flat pipe. Since there is no blocking mechanism to restrict the flat pipe during its placement and assembly, the bending effect of the flat pipe is reduced, and multiple bendings are required, which reduces work efficiency. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a pipe bending machine having a high bending efficiency.

[0004] According to the pipe bending machine of the embodiment of the present invention, the pipe bending machine is used to bend a flat pipe, and the flat pipe includes: a first straight pipe section, a section to be bent, and a second straight pipe section, the section to be bent is connected between the first straight pipe section and the second straight pipe section, the pipe bending machine includes: a frame, a flat pipe supporting mechanism, a pipe bending mechanism, and a flat pipe following mechanism; the pipe bending mechanism includes: a lower pipe bending die mechanism and an upper pressing die mechanism, the lower pipe bending die mechanism supports and fixes the first straight pipe section, the lower pipe bending die mechanism is rotatably arranged on the frame, the upper pressing die mechanism is arranged above the lower pipe bending die mechanism and is suitable for pressing the flat pipe with the lower pipe bending die mechanism; the flat pipe A supporting mechanism is arranged on the frame and is used to support the second straight pipe section, and the flat tube supporting mechanism is spaced apart from the lower bending tube mold mechanism; and the flat tube following mechanism is arranged on the frame and is located on one side of the bending mechanism and the flat tube supporting mechanism, and the flat tube following mechanism includes: a follower, when the bending mechanism rotates and bends the section to be bent, the flat tube can drive the follower to move from a first position to a second position along the length direction of the second straight pipe section, in the first position, the follower is attached to the section to be bent and the second straight pipe section, and in the second position, the follower is attached to the second straight pipe section.

[0005] According to the pipe bending machine of the embodiment of the present invention, a flat pipe follower mechanism is provided on the pipe bending machine. After the flat pipe is installed in the pipe bending mechanism, the follower is suitable for contacting and limiting on one side of the flat pipe, which not only makes the assembly of the flat pipe in the pipe bending mechanism more reliable, but also allows the pipe bending mechanism to more reliably guide the flat pipe to bend and bend the flat pipe into a desired shape. In addition, the flat pipe is suitable for driving the follower to move the same distance during the bending process, so that the bending condition of the flat pipe is suitable for being displayed by the follower, so that the user can quickly know the bending condition of the flat pipe and can control the pipe bending machine according to the bending condition, so that the flat pipe bent by the pipe bending machine is more in line with the user's needs, so that the pipe bending machine has higher working efficiency. At the same time, because the follower is also suitable for limiting the flat pipe, the unbent part of the flat pipe has a higher straightness, which is convenient for the subsequent use and processing of the flat pipe.

[0006] In some embodiments, the flat tube follower mechanism further includes: a first driving member and a sliding member, wherein the first driving member is disposed on the frame, and the first driving member cooperates with the sliding member in transmission to drive the sliding member to approach and move away from the flat tube, and the follower is slidably disposed on the sliding member, and the movement direction of the sliding member is perpendicular to the sliding direction of the follower.

[0007] In some embodiments, the flat tube follower mechanism further includes: a follower self-locking device, which is disposed on the frame and located on at least one side of the first driving member to lock the first driving member or the sliding member.

[0008] In some embodiments, the follow-up self-locking device includes: a self-locking fixed part, a self-locking movable part, a self-locking driving part and a self-locking actuator, the self-locking fixed part is arranged on the frame, the self-locking movable part is arranged on the sliding part, the self-locking driving part is arranged on the frame and located on one side of the self-locking movable part, and the self-locking actuator is arranged on the self-locking driving part. Under the drive of the self-locking driving part, the self-locking actuator selectively extends between the self-locking fixed part and the self-locking movable part to lock the self-locking movable part.

[0009] In some embodiments, the self-locking driving member and the self-locking actuator are both two and are distributed on opposite sides of the self-locking movable member, and the two self-locking driving members selectively and synchronously drive the self-locking actuator to move.

[0010] In some embodiments, the self-locking movable part is provided with a first mating bevel, and the self-locking actuator is provided with a second mating bevel. When the self-locking actuator extends between the self-locking fixing part and the self-locking movable part, the first mating bevel and the second mating bevel are locked and mated.

[0011] In some embodiments, the flat tube follower mechanism further includes: a mounting frame, the first driving member is arranged on the mounting frame, a waist-shaped mounting hole is arranged on the mounting frame, and the waist-shaped mounting hole is fixed to the frame by a fastener.

[0012] In some embodiments, the flat tube follower mechanism further includes: an elastic return member, wherein the elastic return member is disposed between the mounting frame and the follower to provide an elastic return force to the follower.

[0013] In some embodiments, the follower member includes: a follower main plate and a follower sub-plate, the follower main plate can be slidably disposed on the sliding member, the follower sub-plate is connected to the end of the follower main plate and is vertically bent relative to the follower main plate, one end of the elastic reset member is connected to the mounting frame and the other end is connected to the follower sub-plate.

[0014] In some embodiments, the lower bending tube mold mechanism includes: a second driving member and a lower bending tube die head, the second driving member is arranged at the bottom of the frame, the lower bending tube die head is arranged on the frame and cooperates with the second driving member in transmission, and the lower bending tube die head is provided with an arc-shaped clamping groove for clamping the flat tube; the upper pressing die mechanism includes: a third driving member and an upper pressing die head, the third driving member is arranged at the top of the frame, the upper pressing die head and the lower bending tube die head are arranged opposite to each other up and down, and the upper pressing die head cooperates with the third driving member in transmission.

[0015] In some embodiments, the arc-shaped slot has a starting port and an ending port, and the inner edge of the ending port is tilted inwardly so that the width of the ending port increases gradually.

[0016] In some embodiments, the lower bending tube mold mechanism also includes: a plurality of lower cam bearing followers, which are arranged at the bottom of the lower bending tube die head and are circumferentially spaced apart; the upper pressing die mechanism also includes: a plurality of upper cam bearing followers, which are arranged at the top of the upper pressing die head and are circumferentially spaced apart.

[0017] In some embodiments, the top of the flat tube support mechanism is a support surface, and the support surface is lower than the bottom surface of the arc-shaped slot.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 is a schematic structural diagram of a pipe bending machine according to an embodiment of the present invention;

[0021] Figure 2 is a schematic structural diagram of a pipe bending machine according to an embodiment of the present invention;

[0022] Figure 3 It is a partial structural schematic diagram of a pipe bending machine according to an embodiment of the present invention;

[0023] Figure 4 2 is a schematic structural diagram of a lower elbow die head according to an embodiment of the present invention;

[0024] Figure 5 is a schematic structural diagram of a follower mechanism according to an embodiment of the present invention;

[0025] Figure 6 is a schematic structural diagram of a follower mechanism according to an embodiment of the present invention;

[0026] Figure 7 Schematic diagram of the structure of the follower mechanism of the embodiment of the present invention.

[0027] Reference numerals:

[0028] Pipe bending machine 1,

[0029] Frame 10, flat tube 11, first straight tube section 111, second straight tube section 112, curved section 113,

[0030] Flat tube support mechanism 20, support surface 201,

[0031] Bending mechanism 30, flat tube conveying area 301, lower bending die mechanism 310, second driving member 311, lower bending die head 312, arc-shaped slot 313, starting port 314, ending port 315, lower cam bearing follower 316, upper die mechanism 320, third driving member 321, upper die head 322, upper cam bearing follower 323,

[0032] Flat tube follower mechanism 40, follower 410, follower main board 411, follower sub-board 412, first driving member 420, sliding member 430, follower self-locking device 440, self-locking fixing member 441, self-locking movable member 442, self-locking driving member 443, self-locking actuator 444, first mating inclined surface 445, second mating inclined surface 446, mounting frame 450, waist-shaped mounting hole 451, elastic reset member 460. DETAILED DESCRIPTION

[0033] Embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Embodiments of the present invention are described in detail below.

[0034] Reference below Figure 1-Figure 7A pipe bending machine 1 according to an embodiment of the present invention is described. The pipe bending machine 1 is used to bend a flat pipe 11. The flat pipe 11 includes: a first straight pipe section 111, a section to be bent and a second straight pipe section 112. The section to be bent is connected between the first straight pipe section 111 and the second straight pipe section 112. The pipe bending machine includes: a frame 10, a flat pipe supporting mechanism 20, a pipe bending mechanism 30 and a flat pipe following mechanism 40.

[0035] Specifically, if Figure 2 As shown, the pipe bending mechanism 30 includes: a lower pipe bending die mechanism 310 and an upper die mechanism 320, the lower pipe bending die mechanism 310 supports and fixes the first straight pipe section 111, the lower pipe bending die mechanism 310 is rotatably arranged on the frame 10, the upper die mechanism 320 is arranged above the lower pipe bending die mechanism 310 and is suitable for pressing the flat pipe 11 with the lower pipe bending die mechanism 310; the flat pipe support mechanism 20 is arranged on the frame 10 and is used to support the second straight pipe section 112, and the flat pipe support mechanism 20 is spaced apart from the lower pipe bending die mechanism 310. It can be understood that the lower pipe bending die mechanism 310 is suitable for cooperating with the upper die mechanism 320 to form a flat pipe conveying area 301. In this way, the flat tube conveying area 301 is formed by using the lower tube bending die mechanism 310 and the upper die mechanism 320. When the first straight tube section 111 of the flat tube 11 is installed in the flat tube conveying area 301, the lower tube bending die mechanism 310 and the upper die mechanism 320 can be adjusted in the vertical direction to adjust the pressing and fixing of the first straight tube section 100, so that the assembly of the first straight tube section 111 in the tube bending mechanism 30 is more reliable, so as to guide the flat tube 11 to bend in the subsequent process, and improve the performance of the tube bending machine 1. At the same time, by adjusting the vertical position of the lower tube bending die mechanism 310 and the upper die mechanism 320, the assembly position of the flat tube conveying area 301 and the flat tube 11 can be adjusted, so that the flat tube conveying area 301 can be adjusted according to the shape of the flat tube 11, and the applicability of the tube bending machine 1 is improved. In addition, the flat tube 11 is fixed by press-fitting the flat tube 11 in the vertical direction, so that the damage to the flat tube 11 by the tube bending mechanism 30 during use is reduced, thereby improving the performance of the flat tube 11 after being bent by the tube bender 1 .

[0036] The flat tube follower mechanism 40 is arranged on the frame 10 and is located on one side of the tube bending mechanism 30 and the flat tube supporting mechanism 20. The flat tube follower mechanism 40 includes: a follower 410. When the tube bending mechanism 30 rotates and bends the section to be bent of the flat tube 11, the flat tube 11 can drive the follower 410 to move from a first position to a second position along the length direction of the second straight tube section 112. In the first position, the follower 410 is attached to the section to be bent and the second straight tube section 112. In the second position, the follower 410 is attached to the second straight tube section 112.

[0037] It should be noted that, during the use of the pipe bending machine 1, the flat tube support mechanism 20 is suitable for supporting the flat tube 11, so that the flat tube 11 can be relatively stably installed in the pipe bending machine 1, so that the flat tube 11 moves along the pipe bending mechanism 30 under the drive of the pipe bending mechanism 30 to bend the flat tube 11 into a desired shape.

[0038] At the same time, after the flat tube 11 is installed on the tube bending machine 1, the position of the flat tube follower mechanism 40 is suitable for movement, so that the follower 410 on the flat tube follower mechanism 40 is suitable for contact and restriction with the flat tube 11, such as the follower 410 is suitable for contact with the side wall of the flat tube 11 and the contact between the two has a large static friction force, which not only makes the assembly setting of the flat tube 11 on the tube bending mechanism 30 more reliable, so that the tube bending mechanism 30 can move according to the control to bend the flat tube 11 installed in the tube bending mechanism 30; and in the process of rotating and bending the flat tube 11, due to the large friction between the flat tube 11 and the follower 410, the tube bending mechanism 30 can drive the follower 410 to move along the length direction of the second straight tube section 112 of the flat tube 11 when driving the flat tube 11 to rotate. In this way, the distance that the flat tube 11 is suitable for moving under the drive of the tube bending mechanism 30 is suitable for being displayed through the moving distance of the follower 410, so that the user can have a clearer understanding of the bending condition of the flat tube 11, so that the user can bend the flat tube 11 into a desired state according to the needs. At the same time, the follower 410 is also suitable for being stably restricted to the outside of the unbent flat tube 11 (that is, the second straight tube section 112), so that the unbent flat tube 11 (that is, the second straight tube section 112) has a higher straightness, so as to improve the performance of the flat tube 11 after bending.

[0039] For example, Figure 1 and Figure 3 As shown, when the flat tube 11 is assembled with the tube bending mechanism 30 on the tube bending machine 1, the first straight tube section 111 on the flat tube 11 is suitable for being placed in the flat tube conveying area 301, and then the upper die mechanism 320 and the lower tube bending die mechanism 310 are adjusted in the vertical direction so that they can press and limit the flat tube 11 in the vertical direction, so that the first straight tube section 111 is arranged in the tube bending mechanism 30 more reliably. Afterwards, the position of the flat tube follower mechanism 40 is adjusted so that the follower 410 in the flat tube follower mechanism 40 is suitable for contacting with the to-be-bent section and the second straight tube section 112 in the flat tube 11, so as to further limit the assembly of the flat tube 11 and improve the assembly effect of the flat tube 11. After the to-be-bent section and the second straight tube section 112 are assembled with the follower 410, the lower tube bending die mechanism 310 and the upper die mechanism 320 can be suitable for moving along the flat tube conveying area 301. Figure 1 Turn clockwise to Figure 3 The middle state allows the section to be bent to form the desired bending section 113. Figure 3In the case shown, the section to be bent is adapted to completely form the bent section 113, the interference restriction between the section to be bent and the follower 410 disappears, and the follower 410 is adapted to abut against the second straight tube section 112 to restrict the flat tube 11 and prevent the flat tube 11 from escaping from the tube bender 1. When the flat tube 11 is bent, the tube bending mechanism 30 is adapted to release its restriction on the flat tube 11, so as to take out the flat tube 11 and perform subsequent processing, and the tube bender 1 can be reset for subsequent use.

[0040] According to the pipe bending machine 1 of the embodiment of the present invention, a flat tube follower mechanism 40 is provided on the pipe bending machine 1. After the flat tube 11 is installed in the pipe bending mechanism 30, the follower 410 is suitable for contacting and restricting one side of the flat tube 11, which not only makes the assembly of the flat tube 11 in the pipe bending mechanism 30 more reliable, but also the pipe bending mechanism 30 can more reliably guide the flat tube 11 to bend and bend the flat tube 11 into a desired shape. In addition, the flat tube 11 is suitable for driving the follower 410 to move the same distance during the bending process, so that the bending condition of the flat tube 11 is suitable for being displayed by the follower 410, so that the user can quickly know the bending condition of the flat tube 11 and can control the pipe bending machine 1 according to the bending condition, so that the flat tube 11 bent by the pipe bending machine 1 is more in line with user needs, so that the pipe bending machine 1 has higher working efficiency. At the same time, since the follower 410 is also suitable for limiting the flat tube 11, the unbent portion of the flat tube 11 (ie, the second straight tube section 112) has a higher straightness, so as to facilitate the subsequent use and processing of the flat tube 11.

[0041] In some embodiments, Figure 5 As shown, the flat tube follower mechanism 40 also includes: a first driving member 420 and a sliding member 430. The first driving member 420 is disposed on the frame 10. The first driving member 420 and the sliding member 430 are in transmission cooperation to drive the sliding member 430 to approach and move away from the flat tube 11. The follower 410 is slidably disposed on the sliding member 430. The movement direction of the sliding member 430 is perpendicular to the sliding direction of the follower 410.

[0042] In this way, the first driving member 420 is suitable for driving the sliding member 430 to move in a sliding direction perpendicular to the flat tube 11, so that after the flat tube 11 is installed on the tube bender 1, the first driving member 420 can be used to adjust the position of the flat tube follower mechanism 40, so that the follower 410 on the flat tube follower mechanism 40 can interfere with the flat tube 11 to limit the assembly of the flat tube 11 on the tube bender 1, thereby improving the performance of the tube bender 1. At the same time, since the follower 410 is slidably arranged on the sliding member 430, the sliding member 430 is suitable for providing a guiding role for the movement of the follower 410, so that the movement of the follower 410 is more reliable, and the performance of the flat tube follower mechanism 40 is improved.

[0043] In some embodiments, Figure 5 As shown, the flat tube follower mechanism 40 further includes: a follower self-locking device 440, which is disposed on the frame 10 and located at least on one side of the first driving member 420 to lock the first driving member 420 or the sliding member 430. It can be understood that after the positions of the first driving member 420 and the sliding member 430 are adjusted according to the assembly of the flat tube 11, the follower self-locking device 440 is suitable for locking the first driving member 420 and the sliding member 430, so that the assembly connection between the first driving member 420 and the sliding member 430 and the frame 10 is more stable.

[0044] In some embodiments, Figure 5 and Figure 6 As shown, the follower self-locking device 440 includes: a self-locking fixing member 441, a self-locking movable member 442, a self-locking driving member 443 and a self-locking actuator 444. The self-locking fixing member 441 is arranged on the frame 10, the self-locking movable member 442 is arranged on the sliding member 430, the self-locking driving member 443 is arranged on the frame 10 and is located on one side of the self-locking movable member 442, and the self-locking actuator 444 is arranged on the self-locking driving member 443. Under the drive of the self-locking driving member 443, the self-locking actuator 444 selectively extends between the self-locking fixing member 441 and the self-locking movable member 442 and stops with the self-locking fixing member 441 and the self-locking movable member 442 to lock the self-locking movable member 442.

[0045] It can be understood that during the use of the follower self-locking device 440, since the self-locking driving member 443 moves along the movable direction of the sliding member 430, when the follower self-locking device 440 is suitable for locking, the self-locking driving member 443 is suitable for driving the self-locking actuator 444 to move so as to extend between the self-locking fixing member 441 and the self-locking movable member 442, and the opposite sides of the self-locking actuator 444 are respectively abutted against the self-locking fixing member 441 and the self-locking movable member 442. Since the self-locking fixing member 441 is suitable for being fixedly connected to the frame 10, the position of the follower self-locking device 440 is suitable for being fixed by the interference restriction of the self-locking actuator 444 and the self-locking fixing member 441, thereby playing a locking role on the first driving member 420 and the sliding member 430. When the follower self-locking device 440 is suitable for unlocking, the self-locking driving member 443 is suitable for driving the self-locking actuator 444 to move so that the self-locking actuator 444 is withdrawn from between the self-locking fixing member 441 and the self-locking movable member 442, so that the opposite sides of the self-locking actuator 444 are respectively disengaged from the self-locking fixing member 441 and the self-locking movable member 442, so that the positions of the self-locking movable member 442 and the sliding member 430 can be adjusted, thereby adjusting the position of the follower 410.

[0046] In this way, the self-locking actuator 444 is moved so that it is fixed and restricted between the self-locking fixing member 441 and the self-locking movable member 442, so that the locking of the follower self-locking device 440 is simpler and more reliable. At the same time, the disengagement process between the self-locking actuator 444 and the self-locking fixing member 441 and the self-locking movable member 442 is also relatively simple, so that the use of the follower self-locking device 440 is simpler and more convenient, and the fixation of the follower self-locking device 440 is more reliable to meet the restriction effect on the sliding member 430, thereby making the sliding of the follower 410 on the sliding member 430 more reliable.

[0047] In some specific embodiments, Figure 5 and Figure 6 As shown, there are two self-locking driving members 443 and self-locking actuators 444, which are distributed on opposite sides of the self-locking movable member 442. The two self-locking driving members 443 selectively and synchronously drive the self-locking actuator 444 to move. Therefore, the self-locking driving member 443 and the self-locking actuator 444 are arranged on opposite sides of the self-locking movable member 442. During the use of the self-locking actuator 444, the self-locking actuator 444 can be more reliably restricted on the self-locking fixing member 441 and the self-locking movable member 442, so that the use performance of the follower self-locking device 440 is improved, and the follower self-locking device 440 can more reliably limit the position of the sliding member. At the same time, the two self-locking driving members 443 are suitable for selectively and synchronously driving the self-locking actuator 444 to move. During the use of the self-locking driving member 443, the self-locking driving member 443 can move synchronously to drive the self-locking actuator 444 to lock or release the lock, or it can move asynchronously, that is, the follower actuator can drive the self-locking actuator 444 to lock or release the lock in a one-after manner. In this way, the use process of the follower self-locking device 440 is simpler.

[0048] In some specific embodiments, Figure 6 As shown, the self-locking movable part 442 is provided with a first matching bevel 445, and the self-locking actuator 444 is provided with a second matching bevel 446. When the self-locking actuator 444 extends between the self-locking fixed part 441 and the self-locking movable part 442, the first matching bevel 445 and the second matching bevel 446 are locked and matched. In this way, the self-locking actuator 444 is limited to the self-locking movable part 442 by using the first matching bevel 445 and the second matching bevel 446 to fit together, so that the self-locking actuator 444 can limit the self-locking movable part 442 more reliably, and facilitate the separation between the self-locking actuator 444 and the self-locking movable part 442, so that the use process of the follower self-locking device 440 is simpler and more reliable. At the same time, by using the first matching bevel 445 and the second matching bevel 446 to fit together, the first matching bevel 445 is suitable for providing a guiding effect for the movement of the second matching bevel 446, so that the use of the follower self-locking device 440 is more reliable.

[0049] In some embodiments, Figure 5 As shown, the flat tube follower mechanism 40 further includes: a mounting frame 450, the first driving member 420 is arranged on the mounting frame 450, and a waist-shaped mounting hole 451 is arranged on the mounting frame 450, and the waist-shaped mounting hole 451 is fixed to the frame 10 by a fastener. It can be understood that the mounting frame 450 is suitable for providing a position for the connection and assembly of the follower 410, the sliding member 430 and the first driving member 420, which not only facilitates the assembly and construction of the flat tube follower mechanism 40 and improves the assembly efficiency, but also can adjust the distance between the follower 410 and the flat tube 11 by moving the mounting frame 450, so that the tube bending mechanism 30 can carry flat tubes 11 of different sizes, so as to improve the applicability of the tube bending machine 1.

[0050] In some embodiments, Figure 5 As shown, the flat tube follower mechanism 40 further includes: an elastic reset member 460, which is disposed between the mounting frame 450 and the follower 410 to provide an elastic reset force to the follower 410. In this way, during the bending process of the flat tube 11, the follower 410 is adapted to move synchronously with the flat tube 11 to drive the elastic reset member 460 to stretch, and after the flat tube 11 is bent, the flat tube 11 is adapted to be separated from the follower 410, and the elastic reset member 460 in a stretched state can drive the follower 410 to move and return to the initial position, so as to facilitate the subsequent use of the flat tube follower mechanism 40.

[0051] In some specific embodiments, Figure 6 and Figure 7 As shown, the follower 410 includes: a follower main board 411 and a follower sub-board 412. The follower main board 411 is slidably disposed on the sliding member 430. The follower sub-board 412 is fixedly connected to the end of the follower main board 411 and is vertically bent relative to the follower main board 411. One end of the elastic reset member 460 is connected to the mounting frame 450 and the other end is connected to the follower sub-board 412.

[0052] It is understandable that the follower main plate 411 has a larger contact area, and when the follower 410 contacts the flat tube 11, the static friction force is larger, so that the contact restriction between the follower 410 and the flat tube is more reliable, and the movement of the follower 410 is more in line with the actual movement of the flat tube 11. The follower sub-plate 412 is suitable for connecting with the elastic reset member 460 to provide a position for the connection and assembly of the elastic reset member 460. After the follower 410 moves, the elastic reset member 460 in a stretched state can be elastically reset according to the position of the follower sub-plate 412 to reset the follower 410 to the initial position for the subsequent use of the pipe bending machine.

[0053] It should be noted that the elastic return member 460 can be assembled between the follower sub-plate 412 and the mounting bracket 450 in the form of a single spring, or can be assembled between the follower sub-plate 412 and the mounting bracket 450 in the form of two springs in combination and connection, or can be assembled in the form of a combination of multiple springs. The number of springs is suitable for adjustment according to the actual use of the follower mechanism, which will not be elaborated here.

[0054] In some embodiments, Figure 1 and Figure 2 As shown, the lower bending tube mold mechanism 310 includes: a second driving member 311 and a lower bending tube die head 312, the second driving member 311 is arranged at the bottom of the frame 10, the lower bending tube die head 312 is arranged on the frame 10 and cooperates with the second driving member 311 in transmission, and the lower bending tube die head 312 is provided with an arc-shaped clamping groove 313 for clamping the flat tube 11; the upper pressing die mechanism 320 includes: a third driving member 321 and an upper pressing die head 322, the third driving member 321 is arranged at the top of the frame 10, the upper pressing die head 322 and the lower bending tube die head 312 are arranged opposite to each other up and down, and the upper pressing die head 322 cooperates with the third driving member 321 in transmission.

[0055] It is understandable that the second driving member 311 is suitable for providing driving force to the lower bending die head 312 to drive the lower bending die head 312 to rotate; and the third driving member 321 is suitable for driving the upper pressing die head 322 to rotate, so as to drive the upper pressing die head 322 to rotate. During the use of the bending mechanism 30, the upper pressing die head 322 is suitable for rotating synchronously with the lower bending die head 312 to enhance the bending effect of the bending mechanism 30 on the flat tube 11. At the same time, during the bending process of the flat tube 11, the arc-shaped groove 313 provided on the lower bending die head 312 is suitable for guiding the movement of the flat tube 11, so that the flat tube 11 can move in the arc-shaped groove 313, thereby forming a bending effect on the flat tube 11. Of course, the arc-shaped groove 313 can be set to a semicircular shape, so that the bending effect of the bending mechanism 30 on the flat tube 11 is enhanced.

[0056] In some embodiments, Figure 4As shown, the arc-shaped slot 313 has a starting port 314 and an ending port 315, and the inner edge of the ending port 315 is tilted inwardly so that the width of the ending port 315 is increasing. It can be understood that the starting part of the part to be bent in the flat tube 11 is suitable for being limited in the starting port 314, so that the bending mechanism 30 can bend the required part. The ending port 315 is suitable for connecting the ending part of the part to be bent in the flat tube 11. In this way, when the flat tube 11 is suitable for being limited and matched with the ending port 315, it means that the flat tube 11 is suitable for completing the bending process. At the same time, the flat tube 11 has a certain elastic effect, and a rebound effect often occurs after the flat tube 11 is bent. If the flat tube 11 is bent according to the required angle, the actual bending angle formed by the flat tube 11 often cannot meet the requirement. Therefore, an inwardly inclined edge is provided on the terminal port 315. When the flat tube 11 is bent, the flat tube 11 can be appropriately over-bent to provide a bending margin for the rebound of the flat tube 11 after bending, so that the bending effect of the flat tube 11 in the actual production process can meet the requirements.

[0057] In some embodiments, Figure 2 As shown, the lower bending tube mold mechanism 310 also includes: a plurality of lower cam bearing followers 316, which are arranged at the bottom of the lower bending tube die head 312 and are arranged at circumferential intervals and are suitable for abutting against the lower bending tube die head 312; the upper pressing die mechanism 320 also includes: a plurality of upper cam bearing followers 323, which are arranged at the top of the upper pressing die head 322 and are arranged at circumferential intervals and are suitable for abutting against the upper pressing die head 322. It should be noted that during the use of the tube bending mechanism 30, the lower cam bearing follower 316 always maintains its contact with the lower surface of the lower tube bending die head 312, and the upper cam bearing follower 323 always maintains its contact with the upper surface of the upper pressure die head 322. In this way, the distance between the upper pressure die head 322 and the lower tube bending die head 312 remains stable, preventing the flat tube 11 from warping when the tube bending mechanism 30 bends the flat tube, thereby ensuring that the thickness of the flat tube 11 after bending is within the qualified range, thereby improving the yield rate of the flat tube 11 when bending.

[0058] In this way, by providing a lower cam bearing follower 316 on the lower tube bending die mechanism 310 and an upper cam bearing follower 323 on the upper die mechanism 320, the rotation of the lower tube bending die head 312 and the upper die head 322 can be facilitated, the power loss of the tube bending mechanism 30 during the rotation process can be reduced, the production cost can be reduced, and the performance of the tube bending machine 1 can be improved. At the same time, the circumferentially spaced arrangement of multiple lower cam bearing followers 316 and upper cam bearing followers 323 can make the rotation of the tube bending mechanism 30 more stable and reliable, and improve the working efficiency of the tube bending machine 1.

[0059] In some embodiments, Figure 1 As shown, the top of the flat tube support mechanism 20 is a support surface 201, and the support surface 201 is lower than the bottom surface of the arc-shaped slot 313. When the flat tube 11 is installed in the tube bending mechanism 30, the flat tube 11 is suitable for being supported on the support surface 201, so as to facilitate the assembly of the flat tube 11. In this way, since the support surface 201 is lower than the bottom surface of the arc-shaped slot 313, when the flat tube 11 is suitable for being installed and moved with the arc-shaped slot 313, scratches on the flat tube 11 and the support surface 201 are avoided.

[0060] Other structures and operations of the pipe bending machine 1 according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0061] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0062] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A pipe bending machine, characterized in that: The pipe bending machine is used to bend a flat pipe, the flat pipe comprising: a first straight pipe section, a section to be bent, and a second straight pipe section, the section to be bent is connected between the first straight pipe section and the second straight pipe section, the pipe bending machine comprises: frame; A pipe bending mechanism, the pipe bending mechanism comprising: a lower pipe bending die mechanism and an upper pressing die mechanism, the lower pipe bending die mechanism supports and fixes the first straight pipe section, the lower pipe bending die mechanism is rotatably arranged on the frame, and the upper pressing die mechanism is arranged above the lower pipe bending die mechanism and is suitable for pressing the flat pipe with the lower pipe bending die mechanism; A flat tube support mechanism, the flat tube support mechanism is disposed on the frame and is used to support the second straight tube section, the flat tube support mechanism is spaced apart from the lower bend tube mold mechanism; and A flat tube follower mechanism, the flat tube follower mechanism is arranged on the frame and is located on one side of the tube bending mechanism and the flat tube supporting mechanism, the flat tube follower mechanism comprises: a follower, when the tube bending mechanism rotates and bends the section to be bent, the flat tube can drive the follower to move from a first position to a second position along the length direction of the second straight tube section, in the first position, the follower is attached to the section to be bent and the second straight tube section, in the second position, the follower is attached to the second straight tube section; The flat tube follower mechanism further includes: a first driving member, a sliding member and a follower self-locking device, wherein the first driving member is arranged on the frame, the first driving member and the sliding member are in transmission cooperation to drive the sliding member to approach and move away from the flat tube, the follower is slidably arranged on the sliding member, the movement direction of the sliding member is perpendicular to the sliding direction of the follower, and the follower self-locking device is arranged on the frame and located on at least one side of the first driving member to lock the first driving member or the sliding member; The follow-up self-locking device includes: a self-locking fixing part, a self-locking movable part, a self-locking driving part and a self-locking actuator, the self-locking fixing part is arranged on the frame, the self-locking movable part is arranged on the sliding part, the self-locking driving part is arranged on the frame and located on one side of the self-locking movable part, and the self-locking actuator is arranged on the self-locking driving part. Under the drive of the self-locking driving part, the self-locking actuator selectively extends between the self-locking fixing part and the self-locking movable part to lock the self-locking movable part.

2. The pipe bending machine according to claim 1, characterized in that: The self-locking driving member and the self-locking executing member are both two and are distributed on two opposite sides of the self-locking movable member. The two self-locking driving members selectively and synchronously drive the self-locking executing member to move.

3. The pipe bending machine according to claim 1, characterized in that: The self-locking movable part is provided with a first matching bevel, and the self-locking actuator is provided with a second matching bevel. When the self-locking actuator extends between the self-locking fixing part and the self-locking movable part, the first matching bevel and the second matching bevel are locked and matched.

4. The pipe bending machine according to claim 1, characterized in that: The flat tube follower mechanism further comprises: a mounting frame, the first driving member is arranged on the mounting frame, a waist-shaped mounting hole is arranged on the mounting frame, and the waist-shaped mounting hole is fixed to the frame by a fastener.

5. The pipe bending machine according to claim 4, characterized in that: The flat tube follower mechanism further includes an elastic reset member, which is arranged between the mounting frame and the follower to provide an elastic reset force to the follower.

6. The pipe bending machine according to claim 5, characterized in that: The follower member includes: a follower main board and a follower sub-board, the follower main board can be slidably arranged on the sliding member, the follower sub-board is connected to the end of the follower main board and is vertically bent relative to the follower main board, one end of the elastic reset member is connected to the mounting frame and the other end is connected to the follower sub-board.

7. The pipe bending machine according to claim 1, characterized in that: The lower bending tube die mechanism comprises: a second driving member and a lower bending tube die head, wherein the second driving member is arranged at the bottom of the frame, the lower bending tube die head is arranged on the frame and is in driving cooperation with the second driving member, and the lower bending tube die head is provided with an arc-shaped clamping groove for clamping the flat tube; The upper die mechanism comprises: a third driving member and an upper die head, the third driving member is arranged on the top of the frame, the upper die head and the lower elbow die head are arranged opposite to each other up and down, and the upper die head is transmission-coordinated with the third driving member.

8. The pipe bending machine according to claim 7, characterized in that: The arc-shaped slot has a starting port and a terminating port, and the inner edge of the terminating port is tilted inwardly so that the width of the terminating port increases progressively.

9. The pipe bending machine according to claim 7, characterized in that: The lower bending tube die mechanism further comprises: a plurality of lower cam bearing followers, wherein the plurality of lower cam bearing followers are arranged at the bottom of the lower bending tube die head and are arranged at intervals in the circumferential direction; The upper die mechanism further comprises: a plurality of upper cam bearing followers, which are arranged on the top of the upper die head and spaced apart in the circumferential direction.

10. The pipe bending machine according to claim 7, characterized in that: The top of the flat tube supporting mechanism is a supporting surface, and the supporting surface is lower than the bottom surface of the arc-shaped slot.

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