CN216575028U

CN216575028U - Pipe bender

Info

Publication number: CN216575028U
Application number: CN202123032562.9U
Authority: CN
Inventors: 徐敏; 徐逸洋; 梁耀; 董启迪; 刘国柱; 张中景
Original assignee: NINGBO YINZHOU VOCATIONAL EDUCATION CENTER SCHOOL
Current assignee: NINGBO YINZHOU VOCATIONAL EDUCATION CENTER SCHOOL
Priority date: 2021-12-03
Filing date: 2021-12-03
Publication date: 2022-05-24
Anticipated expiration: 2031-12-03

Abstract

The utility model discloses a pipe bender, which comprises a rack, wherein a rotating sleeve is rotatably penetrated in the rack from front to back, and a first rotating shaft is rotatably penetrated in the rotating sleeve from front to back; the front end of the first rotating shaft is provided with a first supporting wheel for supporting the pipe fitting, the peripheral wall of the first supporting wheel is provided with a notch surface, the notch surface is parallel to the axial section of the first supporting wheel, and the rear side of the rack is provided with a first driving mechanism for driving the first rotating shaft to rotate; a rotating seat is fixed at the front end of the rotating sleeve, a sliding block is connected to the rotating seat in a sliding mode, two second supporting wheels used for supporting the pipe fitting are fixed on the sliding block, a first locking mechanism is installed on the rotating seat and used for driving the sliding block to enable one of the second supporting wheels to clamp the pipe fitting on the first supporting wheel, and a second driving mechanism used for driving the rotating sleeve to rotate is installed on the rear side of the rack; after the pipe fitting is bent, the bent pipe fitting can be conveniently taken out of the pipe bending machine.

Description

Pipe bender

Technical Field

The utility model relates to the technical field of pipe fitting machining equipment, in particular to a pipe bender.

Background

The pipe bending machine is mechanical equipment for bending a pipe fitting, and after the pipe fitting is bent by the pipe bending machine on the market at present, the bent pipe fitting is difficult to take out from between two supporting wheels in the pipe bending machine, so that inconvenience can be brought to an operator.

SUMMERY OF THE UTILITY MODEL

In view of the defects of the prior art, the utility model provides a pipe bending machine, which can conveniently take out a bent pipe fitting after the pipe fitting is bent, so that convenience can be brought to an operator.

The pipe bender comprises a rack, wherein a rotating sleeve is rotatably penetrated in the rack from front to back, a first rotating shaft is rotatably penetrated in the rotating sleeve from front to back, and the first rotating shaft and the rotating sleeve are coaxially arranged; the front end of the first rotating shaft is provided with a first supporting wheel for supporting the pipe fitting, the peripheral wall of the first supporting wheel is provided with a notch surface, the notch surface is parallel to the axial section of the first supporting wheel, and the rear side of the rack is provided with a first driving mechanism for driving the first rotating shaft to rotate; the front end of the rotating sleeve is fixed with a rotating seat, the rotating seat is connected with a sliding block in a sliding mode, two second supporting wheels used for supporting the pipe fitting are fixed on the sliding block, the sliding block is used for driving one of the second supporting wheels to slide along the radial direction of the first supporting wheel, a first locking mechanism is installed on the rotating seat and used for driving the sliding block to enable one of the second supporting wheels to clamp the pipe fitting on the first supporting wheel, and a second driving mechanism used for driving the rotating sleeve to rotate is installed on the rear side of the rack.

The pipe bender comprises a pipe bender body, a first driving mechanism, a second driving mechanism and a second driving mechanism, wherein the first driving mechanism comprises a first air cylinder, a first rack and a first gear; by adopting the first driving mechanism, when the piston rod of the first air cylinder extends, the first rotating shaft can be driven to rotate under the action of the first rack and the first gear, and after the first rotating shaft rotates, the notch surface can be rotated to a downward state; when a piston rod of the first air cylinder contracts, the first air cylinder can drive the first rotating shaft to rotate and reset.

The pipe bender comprises a rack, a first rack, a second rack, a rotating sleeve and a pipe bending machine, wherein the rack is fixed on the rear end surface of the rack; after adopting this structure, can realize spacing to first rack under the effect of support and frame to avoid the condition of skew around the first rack appearing, thereby can make first rack drive first gear reliably and rotate.

According to the pipe bender, the first bearing is rotatably connected in the bracket, and the peripheral wall of the first bearing is abutted against one side, far away from the first gear, of the first rack; through the arrangement of the first bearing, the first bearing can limit the first rack, namely, when the first rack drives the first gear, the phenomenon that the first rack floats up and down can be avoided, so that the first rack can reliably drive the first gear to rotate.

The pipe bender comprises a pipe bender body, a first driving mechanism, a second driving mechanism, a first driving mechanism and a second driving mechanism, wherein the first driving mechanism comprises a first cylinder, a first rack and a first gear; after the second driving mechanism is adopted, when a piston rod of the second air cylinder extends, the rotating sleeve and the rotating seat can be driven to rotate clockwise under the action of the second rack, and when the rotating seat rotates clockwise, the pipe fitting clamped on the first supporting wheel can be bent under the action of the second supporting wheel; when the piston rod of the second air cylinder contracts, the rotating seat can be rotated and reset.

The pipe bender is characterized in that a supporting shaft is fixed on the rear end face of the rack, a second bearing and a limiting frame are sequentially and rotatably sleeved outside the supporting shaft from front to back, the rear end of the supporting shaft is in threaded connection with a nut, and the nut is used for blocking the limiting frame and the second bearing to prevent the limiting frame and the second bearing from being separated from the supporting shaft; the other end of the second rack is inserted between the limiting frame and the rack, the front side and the rear side of the second rack are respectively abutted against the rear end face of the rack and the front end face of the limiting frame, the limiting frame is fixed with the rack through a bolt assembly, and the outer peripheral wall of the second bearing is abutted against one side, far away from the second gear, of the second rack; through the arrangement of the limiting frame, the second rack can be limited under the matching action of the limiting frame and the rack, so that the situation that the second rack deviates back and forth is avoided, and the second rack can reliably drive the second gear to rotate; through the setting of second bearing, the second bearing can realize spacing to the second rack, when second rack drive second gear promptly, can avoid the phenomenon that the second rack appears the fluctuation to can make the second rack drive second gear rotation reliably.

The pipe bending machine comprises a first locking mechanism, a second locking mechanism and a third locking mechanism, wherein the first locking mechanism comprises a first supporting block, a first connecting rod, a third air cylinder and a triangular first rotating block, the first supporting block is fixed on a rotating seat, the first end of the first rotating block is rotatably connected with the upper end of the first supporting block through a second rotating shaft, the upper end of the first connecting rod is rotatably connected with a sliding block through a first pin shaft, the lower end of the first connecting rod is rotatably connected with the second end of the first rotating block through a first hinge shaft, the third air cylinder is fixed on the first supporting block, a first connecting block is fixed on a piston rod of the third air cylinder, the first connecting block is rotatably connected with the third end of the first rotating block through a first connecting shaft, a first sliding hole for the first connecting shaft to pass through and for the first connecting shaft to slide when the third air cylinder drives the first connecting block is arranged in the first connecting block, after a piston rod of the third air cylinder is extended, the axis of the second rotating shaft, the axis of the first pin shaft and the axis of the first hinge shaft are on the same plane; after the first locking mechanism is adopted, when a piston rod of the third cylinder contracts, the sliding block can slide downwards under the driving of the first connecting rod, at the moment, the second supporting wheel fixed on the sliding block can release the clamping of the pipe fitting, and in addition, the first connecting shaft can slide in the first sliding hole in the process that the third cylinder drives the first rotating block to rotate; when a piston rod of the third cylinder extends, the sliding block can slide upwards under the driving of the first connecting rod, and at the moment, the second supporting wheel fixed on the sliding block can clamp the pipe fitting on the first supporting wheel; in addition, because the piston rod of third cylinder extends the back, the axis of second pivot, the axis of first round pin axle and the axis of first articulated shaft are on the coplanar, and the slider can't promote first connecting rod and rotate promptly, so, can realize the reliable locking to the slider.

The pipe bending machine comprises a first rotating shaft, a second rotating shaft, a first locking mechanism, a first clamping block, a second locking mechanism and a pipe bending mechanism, wherein a supporting seat is fixed on the front end face of a rack on the right side of the first rotating shaft, the supporting seat is provided with the upper clamping block and the lower clamping block, the upper clamping block is fixed with the supporting seat, the lower clamping block is connected with the supporting seat in a sliding mode, and the supporting seat is further provided with the second locking mechanism which is used for driving the lower clamping block to slide along the supporting seat so that the lower clamping block can clamp a pipe fitting on the upper clamping block; through the setting of last clamp splice, clamp splice and second locking mechanism down, under second locking mechanism's effect, go up the clamp splice and can realize pressing from both sides the reliable clamp of pipe fitting down, so, at the in-process that the pipe fitting was bent, can avoid the phenomenon that the pipe fitting appears removing at will.

The pipe bending machine of the utility model is characterized in that the second locking mechanism comprises a second supporting block, a second connecting rod, a fourth cylinder and a triangular second rotating block, the second supporting block is fixed on the supporting seat, the first end of the second rotating block is rotatably connected with the upper end of the second supporting block through a third rotating shaft, the upper end of the second connecting rod is rotatably connected with the lower clamping block through a second pin shaft, the lower end of the second connecting rod is rotatably connected with the second end of the second rotating block through a second hinge shaft, the fourth cylinder is fixed on the second supporting block, a piston rod of the fourth cylinder is fixedly provided with a second connecting block, the second connecting block is rotatably connected with the third end of the second rotating block through a second connecting shaft, the second connecting block is internally provided with a second sliding hole for the second connecting shaft to pass through and for the second connecting shaft to slide when the fourth cylinder drives the second connecting block, after the piston rod of the fourth cylinder extends, the axis of the third rotating shaft, the axis of the second pin shaft and the axis of the second hinge shaft are on the same plane; after the second locking mechanism is adopted, when a piston rod of the fourth cylinder contracts, the lower clamping block can slide downwards under the driving of the second connecting rod, at the moment, the lower clamping block can release the clamping of the pipe fitting, and in addition, the second connecting shaft can slide in the second sliding hole in the process that the fourth cylinder drives the second rotating block to rotate; when a piston rod of the fourth cylinder extends, the lower clamping block can slide upwards under the driving of the second connecting rod, and at the moment, the lower clamping block can clamp the pipe fitting on the upper clamping block; in addition, after the piston rod of the fourth cylinder extends, the axis of the third rotating shaft, the axis of the second pin shaft and the axis of the second hinge shaft are on the same plane, namely the lower clamping block cannot push the second connecting rod to rotate, so that the lower clamping block can be reliably locked.

The pipe bender comprises a frame, an upper clamping block, a plurality of limiting blocks, a plurality of clamping nuts and a plurality of clamping blocks, wherein the frame is positioned on the right side of the upper clamping block; by adopting the structure, when the pipe fitting is bent for the first time, one end of the pipe fitting can abut against the limiting block which is farthest away from the first supporting wheel, so that the pipe fitting can be positioned, when the pipe fitting is bent for the second time, one end of the pipe fitting can abut against the next limiting block, so that the pipe fitting can be positioned, and by analogy, when the pipe fitting is bent for each time, one end of the pipe fitting can abut against the corresponding limiting block, and after the one end of the pipe fitting abuts against the limiting block, the pipe fitting can be positioned and limited; in addition, each limiting block is rotationally connected with the screw, so that when the pipe fitting needs to be abutted against one of the limiting blocks, the limiting block only needs to be rotated to be abutted against the end part of the pipe fitting; in addition, because the two sides of each limiting block are provided with the limiting nuts, the positions of the limiting blocks relative to the screw rod can be adjusted by rotating the limiting nuts.

After the pipe fitting is bent, when the pipe fitting needs to be taken out from between the first supporting wheel and the second supporting wheel, the first driving mechanism can drive the first supporting wheel to rotate, and after the first supporting wheel rotates, the gap surface can be in a downward state, so that the bent pipe fitting can be conveniently taken out through the gap surface, convenience can be brought to an operator, and after the bent pipe fitting is taken out, the first driving mechanism can drive the first supporting wheel to rotate and reset.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a first perspective view of the present invention;

FIG. 2 is a second perspective view of the present invention;

FIG. 3 is an enlarged view of the structure at A in FIG. 2;

fig. 4 is a third perspective view of the present invention.

Detailed Description

In the following description, for purposes of explanation, numerous implementation details are set forth in order to provide a thorough understanding of the various embodiments of the present invention. It should be understood, however, that these implementation details are not to be interpreted as limiting the utility model. That is, in some embodiments of the utility model, such practical details are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.

In addition, the descriptions related to the first, the second, etc. in the present invention are only used for description purposes, do not particularly refer to an order or sequence, and do not limit the present invention, but only distinguish components or operations described in the same technical terms, and are not understood to indicate or imply relative importance or implicitly indicate the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The pipe bender comprises a rack 1, wherein a rotating sleeve 2 is rotatably penetrated in the rack 1 from front to back, a first rotating shaft 3 is rotatably penetrated in the rotating sleeve 2 from front to back, and the first rotating shaft 3 and the rotating sleeve 2 are coaxially arranged; a first supporting wheel 31 for supporting the pipe fitting 4 is arranged at the front end of the first rotating shaft 3, a notch surface 32 is arranged on the peripheral wall of the first supporting wheel 31, the notch surface 32 is parallel to the axial section of the first supporting wheel 31, and a first driving mechanism for driving the first rotating shaft 3 to rotate is arranged at the rear side of the rack 1; the front end of the rotating sleeve 2 is fixed with a rotating seat 5, the rotating seat 5 is connected with a sliding block 51 in a sliding manner, two second supporting wheels 52 used for supporting the pipe fitting 4 are fixed on the sliding block 51, the sliding block 51 is used for driving one of the second supporting wheels 52 to slide along the radial direction of the first supporting wheel 31, a first locking mechanism is installed on the rotating seat 5 and used for driving the sliding block 51 to enable one of the second supporting wheels 52 to clamp the pipe fitting 4 on the first supporting wheel 31, and a second driving mechanism used for driving the rotating sleeve 2 to rotate is installed on the rear side of the rack 1.

The first driving mechanism comprises a first air cylinder 61, a first rack 62 and a first gear 63, the first air cylinder 61 is fixed on the rear end face of the rack 1, the first gear 63 is sleeved outside the rear end of the first rotating shaft 3 and is fixed with the first rotating shaft 3, one end of the first rack 62 is fixed with a piston rod of the first air cylinder 61, and the other end of the first rack 62 is meshed with the first gear 63; by adopting the first driving mechanism, when the piston rod of the first air cylinder extends, the first rotating shaft can be driven to rotate under the action of the first rack and the first gear, and after the first rotating shaft rotates, the notch surface can be rotated to a downward state; when a piston rod of the first air cylinder contracts, the first air cylinder can drive the first rotating shaft to rotate and reset.

A bracket 64 is fixed on the rear end face of the rack 1, the other end of the first rack 62 is inserted into the bracket 64, and the front side and the rear side of the first rack 62 are respectively abutted against the rear end face of the rotating sleeve 2 and the inner side wall of the bracket 64; after adopting this structure, can realize spacing to first rack under the effect of support and frame to avoid the condition of skew around the first rack appearing, thereby can make first rack drive first gear reliably and rotate.

A first bearing 65 is rotatably connected in the bracket 64, and the peripheral wall of the first bearing 65 is abutted against one side of the first rack 62 far away from the first gear 63; through the arrangement of the first bearing, the first bearing can limit the first rack, namely, when the first rack drives the first gear, the phenomenon that the first rack floats up and down can be avoided, so that the first rack can reliably drive the first gear to rotate.

The second driving mechanism comprises a second air cylinder 71, a second rack 72 and a second gear 73, the second air cylinder 71 is fixed on the rack 1, the second gear 73 is sleeved outside the rear end of the rotating sleeve 2 and is fixed with the rotating sleeve 2, one end of the second rack 72 is fixed with a piston rod of the second air cylinder 71, and the other end of the second rack 72 is meshed with the second gear 73; after the second driving mechanism is adopted, when a piston rod of the second air cylinder extends, the rotating sleeve and the rotating seat can be driven to rotate clockwise under the action of the second rack, and when the rotating seat rotates clockwise, the pipe fitting clamped on the first supporting wheel can be bent under the action of the second supporting wheel; when the piston rod of the second air cylinder contracts, the rotating seat can be rotated and reset.

A support shaft 11 is fixed on the rear end face of the rack 1, a second bearing 74 and a limiting frame 75 are sequentially and rotatably sleeved outside the support shaft 11 from front to back, a nut 12 is connected to the rear end of the support shaft 11 through a thread, and the nut 12 is used for blocking the limiting frame 75 and the second bearing 74 to prevent the limiting frame 75 and the second bearing 74 from being separated from the support shaft 11; the other end of the second rack 72 is inserted between the limiting frame 75 and the rack 1, the front side and the rear side of the second rack 72 are respectively abutted against the rear end face of the rack 1 and the front end face of the limiting frame 75, the limiting frame 75 is fixed with the rack 1 through the bolt assembly 13, and the peripheral wall of the second bearing 74 is abutted against one side of the second rack 72, which is far away from the second gear 73; through the arrangement of the limiting frame, the second rack can be limited under the matching action of the limiting frame and the rack, so that the situation that the second rack is deviated from front to back is avoided, and the second rack can reliably drive the second gear to rotate; through the setting of second bearing, the second bearing can realize spacing to the second rack, when second rack drive second gear promptly, can avoid the phenomenon that the second rack appears the fluctuation to can make the second rack drive second gear rotation reliably.

The first locking mechanism comprises a first supporting block 81, a first connecting rod 82, a third air cylinder 83 and a triangular first rotating block 84, the first supporting block 81 is fixed on the rotating seat 5, the first end of the first rotating block 84 is rotatably connected with the upper end of the first supporting block 81 through a second rotating shaft 89, the upper end of the first connecting rod 82 is rotatably connected with the sliding block 51 through a first pin shaft 85, the lower end of the first connecting rod 82 is rotatably connected with the second end of the first rotating block 84 through a first hinge shaft 86, the third air cylinder 83 is fixed on the first supporting block 81, a first connecting block 87 is fixed on the piston rod of the third air cylinder 83, the first connecting block 87 is rotatably connected with the third end of the first rotating block 84 through a first connecting shaft 88, a first sliding hole for the first connecting shaft 88 to pass through and for the first connecting shaft 88 to slide when the third air cylinder 83 drives the first connecting block 87 is arranged in the first connecting block 87, after the piston rod of the third cylinder 83 is extended, the axis of the second rotating shaft 89, the axis of the first pin shaft 85 and the axis of the first hinge shaft 86 are on the same plane; after the first locking mechanism is adopted, when a piston rod of the third cylinder contracts, the sliding block can slide downwards under the driving of the first connecting rod, at the moment, the second supporting wheel fixed on the sliding block can release the clamping of the pipe fitting, and in addition, in the process that the third cylinder drives the first rotating block to rotate, the first connecting shaft can slide in the first sliding hole; when a piston rod of the third cylinder extends, the sliding block can slide upwards under the driving of the first connecting rod, and at the moment, the second supporting wheel fixed on the sliding block can clamp the pipe fitting on the first supporting wheel; in addition, because the piston rod of third cylinder extends the back, the axis of second pivot, the axis of first round pin axle and the axis of first articulated shaft are on the coplanar, and the slider can't promote first connecting rod and rotate promptly, so, can realize the reliable locking to the slider.

A supporting seat 14 is fixed on the front end face of the rack 1 on the right side of the first rotating shaft 3, an upper clamping block 15 and a lower clamping block 16 are mounted on the supporting seat 14, the upper clamping block 15 is fixed with the supporting seat 14, the lower clamping block 16 is connected with the supporting seat 14 in a sliding mode, and a second locking mechanism is further mounted on the supporting seat 14 and used for driving the lower clamping block 16 to slide along the supporting seat 14 so that the lower clamping block 16 can clamp the pipe fitting 4 on the upper clamping block 15; through the setting of last clamp splice, clamp splice and second locking mechanism down, under second locking mechanism's effect, go up the clamp splice and can realize pressing from both sides the reliable clamp of pipe fitting down, so, at the in-process that the pipe fitting was bent, can avoid the phenomenon that the pipe fitting appears removing at will.

The second locking mechanism comprises a second supporting block 91, a second connecting rod 92, a fourth cylinder 93 and a triangular second rotating block 94, the second supporting block 91 is fixed on the supporting seat 14, a first end of the second rotating block 94 is rotatably connected with an upper end of the second supporting block 91 through a third rotating shaft 99, an upper end of the second connecting rod 92 is rotatably connected with the lower clamping block 16 through a second pin shaft 95, a lower end of the second connecting rod 92 is rotatably connected with a second end of the second rotating block 94 through a second hinge shaft 96, the fourth cylinder 93 is fixed on the second supporting block 91, a piston rod of the fourth cylinder 93 is fixedly provided with a second connecting block 97, the second connecting block 97 is rotatably connected with a third end of the second rotating block 94 through a second connecting shaft 98, the second connecting block 97 is internally provided with a second sliding hole for the second connecting shaft 98 to pass through and for the second connecting shaft 98 to slide when the fourth cylinder 93 drives the second connecting block 97, after a piston rod of the fourth cylinder 93 extends, the axis of the third rotating shaft 99, the axis of the second pin shaft 95 and the axis of the second hinge shaft 96 are on the same plane; after the second locking mechanism is adopted, when a piston rod of the fourth cylinder contracts, the lower clamping block can slide downwards under the driving of the second connecting rod, at the moment, the lower clamping block can release the clamping of the pipe fitting, and in addition, the second connecting shaft can slide in the second sliding hole in the process that the fourth cylinder drives the second rotating block to rotate; when a piston rod of the fourth cylinder extends, the lower clamping block can slide upwards under the driving of the second connecting rod, and at the moment, the lower clamping block can clamp the pipe fitting on the upper clamping block; in addition, because the piston rod of fourth cylinder extends the back, the axis of third pivot, the axis of second round pin axle and the axis of second articulated shaft are on the coplanar, and the clamp splice can't promote the second connecting rod rotation down promptly, so, can realize the reliable locking to clamp splice down.

A screw rod 17 is fixed on the front end face of the rack 1 on the right side of the upper clamping block 15, the screw rod 17 extends along the radial direction of the first rotating shaft 3, a plurality of limiting blocks 18 which are distributed along the axial direction of the screw rod 17 and used for abutting against the end part of the pipe fitting 4 are sleeved on the screw rod 17, each limiting block 18 is rotatably connected with the screw rod 17, limiting nuts 19 used for clamping the limiting blocks 18 are arranged on the two sides of each limiting block 18, and each limiting nut 19 is in threaded connection with the screw rod 17; by adopting the structure, when the pipe fitting is bent for the first time, one end of the pipe fitting can abut against the limiting block which is farthest away from the first supporting wheel, so that the pipe fitting can be positioned, when the pipe fitting is bent for the second time, one end of the pipe fitting can abut against the next limiting block, so that the pipe fitting can be positioned, and by analogy, when the pipe fitting is bent for each time, one end of the pipe fitting can abut against the corresponding limiting block, and after the one end of the pipe fitting abuts against the limiting block, the pipe fitting can be positioned and limited; in addition, each limiting block is rotationally connected with the screw, so that when the pipe fitting needs to be abutted against one of the limiting blocks, the limiting block only needs to be rotated to be abutted against the end part of the pipe fitting; in addition, because the two sides of each limiting block are respectively provided with the limiting nut, the position of the limiting block relative to the screw rod can be adjusted by rotating the limiting nut; it should be noted that: in the utility model, the support frame for supporting the bent pipe fitting is further fixed on the front end face of the frame, and the support frame is used for supporting the bent pipe fitting, so that when the pipe bending machine bends the end part of the pipe fitting, the support frame can reliably support the bent pipe fitting.

When the pipe fitting bending device is required to be used for bending a pipe fitting, one end of the pipe fitting penetrates through a gap between the second support wheel and the first support wheel and a gap between the lower clamping block and the upper clamping block and then abuts against a limiting block which is farthest away from the first support wheel, then the second locking mechanism drives the lower clamping block to slide so that the lower clamping block and the upper clamping block clamp the pipe fitting, meanwhile, the first locking mechanism drives the sliding block to slide so that one of the second support wheels clamps the pipe fitting on the first support wheel, then the second driving mechanism drives the rotating sleeve and the rotating seat to rotate, when the rotating sleeve rotates, the pipe fitting can be bent under the action of the first support wheel and the two second support wheels, and after the pipe fitting is bent, the second driving mechanism drives the rotating sleeve and the rotating seat to rotate and reset; by repeating the steps, the pipe fitting can be bent for multiple times (in the process of bending the pipe fitting each time, one end of the pipe fitting can be abutted against different limiting blocks); after the pipe fitting is bent, the first driving mechanism drives the first rotating shaft to rotate so as to enable the notch surface to rotate downwards, therefore, the bent pipe fitting can be conveniently taken out through the notch surface, and after the bent pipe fitting is taken out, the first driving mechanism drives the first rotating shaft to rotate and reset.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement or the like made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A bending machine comprises a machine frame (1), and is characterized in that: a rotating sleeve (2) is rotatably arranged in the rack (1) in a penetrating manner from front to back, a first rotating shaft (3) is rotatably arranged in the rotating sleeve (2) in a penetrating manner from front to back, and the first rotating shaft (3) and the rotating sleeve (2) are coaxially arranged; a first supporting wheel (31) used for supporting the pipe fitting (4) is arranged at the front end of the first rotating shaft (3), a notch surface (32) is arranged on the peripheral wall of the first supporting wheel (31), the notch surface (32) is parallel to the axial section of the first supporting wheel (31), and a first driving mechanism used for driving the first rotating shaft (3) to rotate is installed on the rear side of the rack (1); the front end of rotating cover (2) is fixed with rotates seat (5), sliding connection has slider (51) on rotating seat (5), be fixed with two second supporting wheels (52) that are used for supporting pipe fitting (4) on slider (51), slider (51) are used for driving one of them second supporting wheel (52) and slide along the radial direction of first supporting wheel (31), install first locking mechanism on rotating seat (5), first locking mechanism is used for driving slider (51) so that one of them second supporting wheel (52) presss from both sides pipe fitting (4) tightly on first supporting wheel (31), the rear side of frame (1) is installed and is used for the drive to rotate cover (2) pivoted second actuating mechanism.

2. The bending machine according to claim 1, wherein the first driving mechanism includes a first cylinder (61), a first rack (62) and a first gear (63), the first cylinder (61) is fixed on the rear end face of the frame (1), the first gear (63) is sleeved outside the rear end of the first rotating shaft (3) and is fixed with the first rotating shaft (3), one end of the first rack (62) is fixed with the piston rod of the first cylinder (61), and the other end of the first rack (62) is engaged with the first gear (63).

3. The bending machine according to claim 2, wherein a bracket (64) is fixed on the rear end face of the frame (1), the other end of the first rack (62) is inserted into the bracket (64), and the front side and the rear side of the first rack (62) respectively abut against the rear end face of the rotating sleeve (2) and the inner side wall of the bracket (64).

4. The bending machine according to claim 3, wherein a first bearing (65) is rotatably connected to the bracket (64), and an outer peripheral wall of the first bearing (65) abuts against a side of the first rack (62) away from the first gear (63).

5. The bending machine according to claim 1, wherein the second driving mechanism includes a second cylinder (71), a second rack (72) and a second gear (73), the second cylinder (71) is fixed on the frame (1), the second gear (73) is sleeved outside the rear end of the rotating sleeve (2) and fixed with the rotating sleeve (2), one end of the second rack (72) is fixed with a piston rod of the second cylinder (71), and the other end of the second rack (72) is engaged with the second gear (73).

6. The pipe bender according to claim 5, characterized in that a supporting shaft (11) is fixed on the rear end face of the frame (1), a second bearing (74) and a limiting frame (75) are rotatably sleeved outside the supporting shaft (11) from front to back in sequence, a nut (12) is connected to the rear end of the supporting shaft (11) in a threaded manner, and the nut (12) is used for blocking the limiting frame (75) and the second bearing (74) to prevent the limiting frame (75) and the second bearing (74) from separating from the supporting shaft (11); the other end of second rack (72) inserts between spacing (75) and frame (1), the front and back both sides of second rack (72) respectively with the rear end face of frame (1) and the preceding terminal surface counterbalance of spacing (75) lean on, spacing (75) are fixed with frame (1) through bolt assembly (13), the periphery wall of second bearing (74) and second rack (72) keep away from one side counterbalance of second gear (73).

7. The bending machine according to claim 1, wherein the first locking mechanism comprises a first supporting block (81), a first connecting rod (82), a third cylinder (83) and a triangular first rotating block (84), the first supporting block (81) is fixed on the rotating base (5), a first end of the first rotating block (84) is rotatably connected with an upper end of the first supporting block (81) through a second rotating shaft (89), an upper end of the first connecting rod (82) is rotatably connected with the sliding block (51) through a first pin shaft (85), a lower end of the first connecting rod (82) is rotatably connected with a second end of the first rotating block (84) through a first hinge shaft (86), the third cylinder (83) is fixed on the first supporting block (81), a first connecting block (87) is fixed on a piston rod of the third cylinder (83), and the first connecting block (87) is rotatably connected with a third end of the first rotating block (84) through a first connecting shaft (88) The first connecting block (87) is provided with a first sliding hole for allowing the first connecting shaft (88) to pass through and allowing the first connecting shaft (88) to slide when the third cylinder (83) drives the first connecting block (87), and after a piston rod of the third cylinder (83) extends, the axis of the second rotating shaft (89), the axis of the first pin shaft (85) and the axis of the first hinge shaft (86) are on the same plane.

8. The pipe bender according to claim 1, characterized in that a supporting seat (14) is fixed on the front end face of the frame (1) located on the right side of the first rotating shaft (3), an upper clamping block (15) and a lower clamping block (16) are installed on the supporting seat (14), the upper clamping block (15) is fixed with the supporting seat (14), the lower clamping block (16) is connected with the supporting seat (14) in a sliding manner, and a second locking mechanism is installed on the supporting seat (14) and is used for driving the lower clamping block (16) to slide along the supporting seat (14) so that the lower clamping block (16) can clamp the pipe (4) on the upper clamping block (15).

9. The tube bending machine according to claim 8, wherein the second locking mechanism comprises a second supporting block (91), a second connecting rod (92), a fourth cylinder (93) and a triangular second rotating block (94), the second supporting block (91) is fixed on the supporting seat (14), a first end of the second rotating block (94) is rotatably connected with an upper end of the second supporting block (91) through a third rotating shaft (99), an upper end of the second connecting rod (92) is rotatably connected with the lower clamping block (16) through a second pin shaft (95), a lower end of the second connecting rod (92) is rotatably connected with a second end of the second rotating block (94) through a second hinge shaft (96), the fourth cylinder (93) is fixed on the second supporting block (91), a second connecting block (97) is fixed on a piston rod of the fourth cylinder (93), and the second connecting block (97) is rotatably connected with a third end of the second connecting rotating block (94) through a second hinge shaft (98) And a second sliding hole for allowing a second connecting shaft (98) to pass through and for allowing the second connecting shaft (98) to slide when a fourth cylinder (93) drives the second connecting block (97) is arranged in the second connecting block (97), and after a piston rod of the fourth cylinder (93) extends, the axis of the third rotating shaft (99), the axis of the second pin shaft (95) and the axis of the second hinge shaft (96) are on the same plane.

10. The pipe bender according to claim 8, characterized in that a screw (17) is fixed on the front end face of the frame (1) on the right side of the upper clamping block (15), the screw (17) extends along the radial direction of the first rotating shaft (3), a plurality of limiting blocks (18) which are distributed along the axial direction of the screw (17) and are used for abutting against the end of the pipe (4) are sleeved on the screw (17), each limiting block (18) is rotatably connected with the screw (17), limiting nuts (19) used for clamping the limiting blocks (18) are arranged on two sides of each limiting block (18), and each limiting nut (19) is in threaded connection with the screw (17).