CN114535372A

CN114535372A - Pipe bending machine

Info

Publication number: CN114535372A
Application number: CN202210133330.2A
Authority: CN
Inventors: 同平武; 朱涛; 杨黎; 崔东龙; 胡振奎; 潘云鹏; 董建伟; 张晓龙; 李万绩; 石春燕; 张硕; 杨洁; 苏立慈; 张培栋; 田帅; 孙海波; 闫达; 薛一; 魏建成; 刘浩
Original assignee: Beijing Urban And Rural Zhonghao Construction Co ltd
Current assignee: Beijing Urban And Rural Zhonghao Construction Co ltd
Priority date: 2022-02-10
Filing date: 2022-02-10
Publication date: 2022-05-27

Abstract

The application relates to the technical field of pipe bending machines, in particular to a pipe bending machine, which comprises a base, a pushing mechanism, a transition mechanism, a bending mechanism and an angle adjusting mechanism, wherein the pushing mechanism is used for bearing a pipe to be bent and pushing the pipe to be bent to the bending mechanism along the transition mechanism; the transition mechanism can bear the pipe to be bent pushed by the material pushing mechanism and limit the pipe to be bent so as to ensure that the pipe to be bent can be bent by the bending mechanism; the bending mechanism can bend the pipe to be bent into a bent pipe; the angle adjusting mechanism can control the bending angle of the pipe to be bent according to a certain angle so as to meet the processing requirement, and the pushing mechanism, the transition mechanism, the bending mechanism and the angle adjusting mechanism are cooperatively matched to jointly complete the processing of the bent pipe. This application has the effect that can reduce operating personnel's intensity of labour on the one hand, on the other hand also can improve the factor of safety in the return bend process.

Description

Pipe bending machine

Technical Field

The application relates to the technical field of pipe bending machines, in particular to a pipe bending machine.

Background

In industrial production, a tubular metal material needs to be bent to a certain angle sometimes, i.e. a bent tube is formed, and the bent tube is mainly formed on a tube bending machine.

The pipe bending machine comprises a transition mechanism and a bending mechanism, wherein the transition mechanism is used for bearing a pipe, and the bending mechanism is used for bending the pipe to form a bent pipe. When the pipe bending machine is used for processing, an operator places the pipe in the transition mechanism and pushes the pipe to move in the direction close to the bending mechanism along the transition mechanism until the pipe is bent by the bending mechanism to form a bent pipe.

In view of the above related technologies, the inventor thinks that when the pipe is bent by the bending mechanism, the worker needs to push the pipe until the pipe is bent by the bending mechanism to form a bent pipe, and in this process, on one hand, the working strength of the operator is high, and on the other hand, the worker pushes the pipe to be bent by the bending mechanism, and certain safety risk also exists.

Disclosure of Invention

The application provides a bending machine, can reduce operating personnel's intensity of labour on the one hand, on the other hand also can improve the factor of safety of return bend in-process.

The application provides a bending machine adopts following technical scheme:

a pipe bending machine comprises a base, a material pushing mechanism, a transition mechanism and a bending mechanism, wherein the base is used for bearing the material pushing mechanism, the transition mechanism and the bending mechanism; the pushing mechanism is used for bearing the pipe to be bent and pushing the pipe to be bent to the bending mechanism along the transition mechanism; the transition mechanism can bear the pipe to be bent pushed by the material pushing mechanism and limit the pipe to be bent so as to ensure that the pipe to be bent can be bent by the bending mechanism; the bending mechanism can bend the pipe to be bent into a bent pipe; the pushing mechanism, the transition mechanism and the bending mechanism cooperate with each other to complete the processing of the bent pipe.

By adopting the technical scheme, when the pipe to be bent is bent, the pipe to be bent is firstly placed in the material pushing mechanism, the pipe to be bent is pushed to the transition mechanism through the pushing mechanism and finally pushed to the bending mechanism, meanwhile, the transition mechanism can limit the pipe to be bent, so that the pipe to be bent can move along the direction close to the bending mechanism all the time, and the pipe to be bent can be pressed to a certain extent, then the bending mechanism bends the pipe to be bent conveyed by the material pushing mechanism into a bent pipe, in the whole processing process of the bent pipe, the pipe to be bent is not required to be pushed all the time by workers until the pipe to be bent is bent by the bending mechanism to form a bent pipe, so on the one hand reduced the intensity of labour of pipe bending in-process operating personnel, on the other hand has also improved the factor of safety of pipe bending in-process, effectively ensured operating personnel's personal safety.

Optionally, the material pushing mechanism comprises a first support frame and a first air cylinder, the first support frame is fixedly arranged on the top surface of the base, a first support table is horizontally and fixedly arranged at one end, away from the base, of the first support frame, a containing groove is formed in the top surface of the first support table along the pushing direction of the pipe to be bent, and the containing groove is matched with the pipe to be bent; the first cylinder is detachably connected to one side, far away from the transition mechanism, of the first supporting table through the support, corresponds to the containing groove and is used for pushing the to-be-bent pipe to move along the containing groove in the direction close to the transition mechanism.

Through adopting above-mentioned technical scheme, when the promotion is waited to bend the tubular product and is removed to bending mechanism, at first will wait to bend the tubular product and arrange in holding the groove, wait to bend the tubular product periphery wall and hold inslot perisporium butt this moment, then start first cylinder, make the piston rod of first cylinder with wait to bend tubular product tip butt, first cylinder drive is waited to bend the tubular product and is removed to transition mechanism after that, and finally remove to bending mechanism, through the aforesaid setting, can replace the manpower with pushing equipment and accomplish push away tub work, thereby alleviate operating personnel's intensity of labour.

Optionally, the transition mechanism is arranged on one side of the first support platform far away from the first cylinder, the transition mechanism comprises a second support frame, a limiting seat and a clamping piece, the second support frame is fixedly arranged on the top surface of the base, and a second support platform is horizontally and fixedly arranged at one end of the second support frame far away from the base; the limiting seat is arranged on the top surface of the second supporting table, a limiting groove is formed in the limiting seat in a penetrating mode, the length direction of the limiting groove is consistent with that of the containing groove, the inner diameter of the limiting groove is the same as that of the containing groove, and the limiting groove and the containing groove are matched with the pipe to be bent; the holder is including two sets of second cylinders that are just right setting each other, and two sets of second cylinders can mutually support and fix spacing seat clamping.

Through adopting above-mentioned technical scheme, when the tubular product that waits to buckle that comes through the propelling movement of first cylinder reachs transition mechanism, at first start the second cylinder, the second cylinder is with spacing seat clamping fixation, first cylinder promotes to wait to buckle tubular product and passes the spacing groove and finally remove to bending mechanism after that, the motion that the tubular product can be treated to buckle in the spacing groove plays limiting displacement, also can play certain effect that compresses tightly to the tubular product of also treating to buckle simultaneously, make bending mechanism can be better treat that the tubular product of buckling buckles.

Optionally, it is provided with a plurality ofly to hold the groove, and a plurality ofly hold the groove along the direction equipartition of the pipe motion direction of waiting to bend of perpendicular to on first supporting bench, a plurality ofly hold the equal difference of size in groove but all with the pipe looks adaptation of waiting to bend of different specifications, a plurality ofly has also been seted up to the spacing groove in addition, the internal diameter of a plurality of spacing grooves is all different, nevertheless all with the same and position one-to-one in internal diameter that holds the groove.

Through adopting above-mentioned technical scheme, the holding groove of a plurality of not unidimensional and the spacing groove of a plurality of not unidimensional can make the waiting of multiple not unidimensional bending tubular product homoenergetic be buckled and form the pipe bending, have improved the suitability of bending machine.

Optionally, the bending mechanism is arranged on one side of the second support table far away from the first support table, the bending mechanism comprises a third support frame, a rotary drum, a rotary shaft and a pressing assembly, and the third support frame is vertically arranged on the top surface of the base; the rotary drum is rotationally connected to the third support frame through the rotary shaft, any end of the rotary shaft is connected with a motor for driving the rotary shaft to rotate, a plurality of annular clamping grooves are formed in the outer peripheral wall of the rotary drum along the length direction of the rotary drum, the widths of the annular clamping grooves are different, but the annular clamping grooves are the same as the inner diameter of the limiting groove and correspond to the inner diameter of the limiting groove one by one, and the height of the rotary drum can ensure that the bottom walls at the tops of the annular clamping grooves are flush with the bottom walls of the limiting groove; the pressing assembly is arranged above the rotary drum, and can press the pipe fitting to be bent fixedly and synchronously rotate along with the rotary drum.

Through adopting above-mentioned technical scheme, when the tubular product that waits to bend that comes through first cylinder and spacing seat propelling movement reachs the mechanism of bending, the bottom of at first waiting to bend the tubular product periphery wall can with the diapire butt at ring groove top (need explain, the default groove that holds of here, spacing groove and ring groove have been adjusted to the unanimous state of size), then compress tightly the subassembly and compress tightly fixedly waiting to bend the tubular product, starter motor, the motor drive rotary drum rotates, and under the synergism of first cylinder, make and wait to bend the tubular product and rotate along the rotary drum, thereby will wait to bend the tubular product and form the bent pipe.

Optionally, the pressing assembly comprises an installation frame and a pressing piece, the installation frame is in an inverted U shape, and wing plates at two ends of the installation frame are fixedly connected to the outer peripheral wall of the rotary drum; the pressing pieces are provided with multiple groups, the number of the pressing pieces is the same as that of the annular clamping grooves, the pressing pieces correspond to the annular clamping grooves one by one, the pressing pieces are provided with third cylinders, cylinder bodies of the third cylinders are fixedly connected with the mounting frame, piston rods of the third cylinder bodies are connected with U-shaped pressing plates, the U-shaped pressing plates are matched with the annular clamping grooves, and the pipe fittings to be bent are pressed and fixed under the action of the third cylinders.

By adopting the technical scheme, when the pipe to be bent is required to be pressed and fastened, the third cylinder corresponding to the annular clamping groove is started, the third cylinder drives the U-shaped pressing plate to move towards the direction close to the pipe to be bent, and finally the annular clamping groove is matched to press and fix the pipe to be bent, so that the pressing and fixing mode is simple and easy to realize.

Optionally, an angle adjusting mechanism is arranged between the rotary drum and the third support frame, the angle adjusting mechanism comprises an installation disc and a clamping component, and the installation disc is sleeved on the rotary shaft and is fixedly connected with the third support frame; the clamping assembly comprises an insertion cylinder, an insertion plate, a spring and a scale groove, the insertion cylinder is arranged on one side of the mounting disc close to the rotary drum, and the distribution direction of the insertion cylinder is consistent with the radius direction of the mounting disc; the inserting plate is inserted into the inserting cylinder and is in sliding connection with the inserting cylinder; the spring is horizontally arranged in the inserting cylinder, one end of the spring is fixedly connected with the inner wall of the inserting cylinder close to one end of the mounting disc, and the other end of the spring is fixedly connected with one end of the inserting plate inserted into the inserting cylinder; the scale grooves are uniformly formed in the end face of the rotary drum, and the forming direction of the scale grooves is consistent with the radial direction of the end face of the rotary drum; in a normal state, under the action of the spring, one end of the inserting plate, which is far away from the spring, is inserted into the scale groove.

By adopting the technical scheme, when the bending angle of the pipe to be bent needs to be accurately adjusted, the first air cylinder pushes the pipe to be bent to enable the front end of the pipe to be bent to extend out of the rotary drum for a certain distance, then the third air cylinder drives the U-shaped pressing plate to move towards the direction close to the pipe to be bent and match with the annular clamping groove to tightly press and fix the pipe to be bent, then the motor is started, the motor drives the rotary drum to rotate, meanwhile, the inserting plate is sequentially clamped into the corresponding scale grooves under the action of the spring, whether the bending angle of the pipe to be bent is an ideal bending angle is determined through the scale grooves, if yes, the rotary drum stops rotating, and through the operation, the bending angle of the pipe to be bent can be accurately adjusted, so that the applicability of the bending mechanism is further improved.

Optionally, a plurality of the U-shaped pressing plates are detachably connected to a piston rod of a third cylinder connected to the U-shaped pressing plates.

Through adopting above-mentioned technical scheme, when the long-time use of U-shaped clamp plate needs to be changed, dismantle the U-shaped clamp plate from the third cylinder, again with new U-shaped clamp plate install can, it is all very convenient when changing and installing the U-shaped clamp plate.

Optionally, rubber pads are bonded to the inner peripheral walls of the plurality of U-shaped pressing plates.

Through adopting above-mentioned technical scheme, the rubber pad can be treated the tubular product of buckling and play certain guard action, reduces to treat that the tubular product of buckling appears warping the possibility of damaging even, treats the tubular product of buckling and plays the guard action.

Optionally, the two ends of the limiting groove are provided with outward-expanding conical surfaces.

Through adopting above-mentioned technical scheme, accessible conical surface leads when waiting to bend tubular product and passing the spacing groove, makes waiting to bend tubular product can be more smooth and easy insert the spacing groove in.

In summary, the present application includes at least one of the following beneficial technical effects:

1. through setting up base, pushing equipment, transition mechanism and bending mechanism, in the course of working of whole bent pipe, need not the workman and promote the tubular product of waiting to buckle always to the tubular product of waiting to buckle and is buckled by bending mechanism and form the bent pipe, so reduced elbow pipe in-process operating personnel's intensity of labour on the one hand, on the other hand has also improved the factor of safety of return bend in-process, effectively ensures operating personnel's personal safety.

Drawings

Fig. 1 is a schematic structural diagram of a bending machine according to an embodiment of the present application;

FIG. 2 is a schematic view intended to show the structure of the bending mechanism;

fig. 3 is a partially enlarged schematic view intended to show a point a in fig. 2.

Description of reference numerals: 1. a base; 2. a material pushing mechanism; 21. a first support frame; 211. a first support table; 2111. a containing groove; 22. a first cylinder; 3. a transition mechanism; 31. a second support frame; 311. a second support table; 32. a limiting seat; 321. a limiting groove; 3211. a conical surface; 33. a second cylinder; 4. a bending mechanism; 41. a third support frame; 42. a rotating drum; 421. a motor; 422. an annular neck; 43. a compression assembly; 431. a mounting frame; 432. a third cylinder; 44. a U-shaped pressing plate; 441. a rubber pad; 45. a rotating shaft; 5. bending the pipe to be bent; 6. an angle adjusting mechanism; 61. mounting a disc; 62. a clamping assembly; 621. inserting a cylinder; 622. inserting plates; 623. a spring; 624. a scale groove.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses bending machine. Referring to fig. 1, the pipe bending machine comprises a base 1, a material pushing mechanism 2, a transition mechanism 3 and a bending mechanism 4, wherein the material pushing mechanism 2, the transition mechanism 3 and the bending mechanism 4 are sequentially arranged on the base 1; the pushing mechanism 2 is used for bearing the pipe 5 to be bent and pushing the pipe 5 to be bent to the bending mechanism 4 along the transition mechanism 3; the transition mechanism 3 can bear the pipe 5 to be bent pushed by the pushing mechanism 2, and limit the pipe 5 to be bent so as to ensure that the pipe 5 to be bent can be bent by the bending mechanism 4; the bending mechanism 4 can bend the pipe 5 to be bent into a bent pipe; the pushing mechanism 2, the transition mechanism 3 and the bending mechanism 4 cooperate with each other to complete the processing of the bent pipe.

Referring to fig. 1, the pushing mechanism 2 includes a first support frame 21 and a first cylinder 22, the first support frame 21 is fixedly connected to the top surface of the base 1, one end of the first support frame 21, which is far away from the base 1, is horizontally and fixedly connected to a first support table 211, a plurality of containing grooves 2111 are formed in the top surface of the first support table 211 along the pushing direction of the pipe 5 to be bent, the number of the containing grooves 2111 is three in this embodiment, the three containing grooves 2111 are uniformly distributed on the first support table 211 along the direction perpendicular to the moving direction of the pipe 5 to be bent, and the three containing grooves 2111 are different in size and are matched with the pipe 5 to be bent with different specifications; the first cylinder 22 is connected to one side of the first supporting platform 211, which is far away from the transition mechanism 3, through a bracket bolt, and corresponds to the position of the containing groove 2111, so as to push the pipe 5 to be bent to move along the containing groove 2111 towards the direction close to the transition mechanism 3.

Referring to fig. 1, the transition mechanism 3 includes a second support frame 31, a limiting seat 32 and a clamping member, the second support frame 31 is fixedly connected to the top surface of the base 1, and a second support table 311 is horizontally and fixedly connected to one end of the second support frame 31 away from the base 1; the limiting seats 32 are arranged on the top surface of the second supporting platform 311, two groups of limiting seats 32 are arranged, and the two groups of limiting seats 32 are distributed along the conveying direction of the pipe 5 to be bent; run through on the spacing seat 32 and seted up spacing groove 321, the length direction of spacing groove 321 is unanimous with the length direction who holds groove 2111, and the conical surface 3211 that expands outward is all seted up at the both ends of spacing groove 321, and spacing groove 321 has seted up a plurality ofly, and this embodiment is equipped with threely, and the internal diameter of three spacing groove 321 is all different, nevertheless all the same and also one-to-one in position with the internal diameter that holds groove 2111 to all with 5 looks adaptations of the tubular product that wait to bend.

Referring to fig. 1, the holder includes two sets of second cylinders 33 that are just to setting up each other, and two sets of second cylinders 33 can mutually support the position of adjusting spacing seat 32 jointly, make the same spacing groove 321 of internal diameter and hold the groove 2111 and be located same horizontal axis to press from both sides spacing seat 32 tight fixedly, the holder is equipped with the multiunit, this embodiment is equipped with two sets ofly, two sets of holders are along the direction of delivery distribution of waiting to bend tubular product 5, and with spacing seat 32 one-to-one.

Referring to fig. 1 and 2, the bending mechanism 4 includes a third support frame 41, a drum 42, a rotating shaft 45 and a pressing assembly 43, wherein the third support frame 41 is fixedly connected to the top surface of the base 1; the horizontal setting of rotary drum 42 is on third support frame 41, and rotate with third support frame 41 through pivot 45 and be connected, 45 pivoted motors 421 of drive pivot are connected to arbitrary end of pivot 45, a plurality of ring groove 422 have been seted up along rotary drum 42's length direction on the rotary drum 42 periphery wall, this embodiment is equipped with threely, three ring groove 422's width all is different, but all the same and the one-to-one with the internal diameter of spacing groove 321, another rotary drum 42's height can guarantee that a plurality of ring groove 422 top department diapalls flush with spacing groove 321 diapalls, need explain, three ring groove 422's distribution position and three distribution position that holds groove 2111 are the one-to-one.

Referring to fig. 2 and 3, the pressing assembly 43 is disposed above the drum 42, the pressing assembly 43 includes a mounting frame 431 and a pressing member, the mounting frame 431 is in an inverted U shape, and flanges at two ends of the mounting frame 431 are fixedly connected to the outer peripheral wall of the drum 42; the pressing pieces are provided with multiple groups, the number of the pressing pieces is the same as that of the annular clamping grooves 422, the pressing pieces correspond to one another in a one-to-one mode, the pressing pieces are third air cylinders 432, the cylinder bodies of the third air cylinders 432 are fixedly connected with the mounting frame 431, piston rods of the third cylinder bodies are connected with U-shaped pressing plates 44 through bolts, rubber pads 441 are bonded on the inner peripheral walls of the U-shaped pressing plates 44, the U-shaped pressing plates 44 are matched with the annular clamping grooves 422, and the pipe fittings to be bent are pressed and fixed under the action of the third air cylinders 432.

When the pipe 5 to be bent is bent, firstly, the accommodating groove 2111 matched with the size of the pipe 5 to be bent is selected according to the size of the pipe 5 to be bent, then, the pipe 5 to be bent is placed in the accommodating groove 2111, the outer peripheral wall of the pipe 5 to be bent is abutted against the inner peripheral wall of the accommodating groove 2111, then, the first air cylinder 22 is started, a piston rod of the first air cylinder 22 is abutted against the end part of the pipe 5 to be bent, and then, the first air cylinder 22 drives the pipe 5 to be bent to move towards the transition mechanism 3;

when the pipe 5 to be bent, which is pushed by the first cylinder 22, reaches the transition mechanism 3, the second cylinder 33 is started first, the second cylinder 33 clamps and fixes the limiting seat 32, and then the first cylinder 22 pushes the pipe 5 to be bent to pass through the corresponding limiting groove 321 and finally move to the bending mechanism 4;

when the pipe 5 to be bent reaches the bending mechanism 4, the bottom of the outer peripheral wall of the pipe 5 to be bent can be abutted against the bottom wall of the top of the annular clamping groove 422, then the third cylinder 432 corresponding to the annular clamping groove 422 is started, the third cylinder 432 drives the U-shaped pressing plate 44 to move towards the direction close to the pipe 5 to be bent, the pipe to be bent is pressed and fixed by matching with the annular clamping groove 422 finally, then the motor 421 is started, the motor 421 drives the rotating shaft 45 to rotate and drives the rotating drum 42 to rotate, and under the synergistic effect of the first cylinder 22, the pipe 5 to be bent is rotated along the rotating drum 42, so that the pipe 5 to be bent is bent to form a bent pipe.

In the whole machining process of the bent pipe, a worker is not required to push the pipe 5 to be bent by the bending mechanism 4 to form the bent pipe, so that the labor intensity of operators in the pipe bending process is reduced, the safety factor of the pipe bending process is also improved, and the personal safety of the operators is effectively guaranteed.

Referring to fig. 1 and 2, an angle adjusting mechanism 6 is further disposed between the rotary drum 42 and the third support frame 41, two sets of angle adjusting mechanisms 6 are disposed, the two sets of angle adjusting mechanisms 6 are respectively disposed at two ends of the rotary drum 42, taking one set of angle adjusting mechanisms 6 as an example, the angle adjusting mechanism 6 includes a mounting disc 61 and a clamping assembly 62, and the mounting disc 61 is sleeved on the rotary shaft 45 and is fixedly connected with the third support frame 41.

Referring to fig. 2, the clamping assembly 62 includes an insertion tube 621, an insertion plate 622, a spring 623 and a scale groove 624, the insertion tube 621 is disposed on one side of the mounting plate 61 close to the rotary drum 42, the direction of the insertion tube 621 is the same as the radial direction of the mounting plate 61, in this embodiment, the direction of the insertion tube 621 is the same as the diameter direction of the mounting plate 61 in the horizontal direction; the inserting plate 622 is inserted into the inserting cylinder 621 and is connected with the inserting cylinder 621 in a sliding manner, and the end part of the inserting plate 622 far away from the mounting disc 61 is trapezoidal; the spring 623 is horizontally arranged in the inserting cylinder 621, one end of the spring 623 is fixedly connected with the inner wall of the inserting cylinder 621 close to one end of the mounting disc 61, and the other end of the spring 623 is fixedly connected with one end of the inserting plate 622 inserted into the inserting cylinder 621; the scale grooves 624 are uniformly formed in the end surface of the rotary drum 42, and the forming direction of the scale grooves 624 is consistent with the radial direction of the end surface of the rotary drum 42; in a normal state, under the action of the spring 623, one end of the insert plate 622 away from the spring 623 is inserted into the scale groove 624.

When the bending angle of the pipe 5 to be bent needs to be accurately adjusted, the first cylinder 22 pushes the pipe 5 to be bent to enable the front end of the pipe 5 to be bent to extend out of a distance relative to the rotary drum 42, then the third cylinder 432 drives the U-shaped pressing plate 44 to move in the direction close to the pipe 5 to be bent, the pipe to be bent is pressed and fixed by matching with the annular clamping groove 422, then the motor 421 is started, the motor 421 drives the rotating shaft 45 to drive the rotary drum 42 to rotate, meanwhile, the inserting plates 622 are sequentially clamped into the corresponding scale grooves 624 under the action of the spring 623, whether the bending angle of the pipe 5 to be bent is an ideal bending angle is determined through the scale grooves 624, if yes, the rotary drum 42 stops rotating, and through the above operation, the accurate adjustment of the bending angle of the pipe 5 to be bent can be realized, and the applicability of the bending mechanism 4 is further improved.

The implementation principle of a pipe bender in the embodiment of the application is as follows: when the pipe 5 to be bent is bent, firstly, the accommodating groove 2111 and the limiting seat 32 which are matched with each other are selected according to the size of the pipe 5 to be bent, then, the pipe 5 to be bent is placed in the accommodating groove 2111, the outer peripheral wall of the pipe 5 to be bent is abutted against the inner peripheral wall of the accommodating groove 2111, then, the first air cylinder 22 is started, a piston rod of the first air cylinder 22 is abutted against the end part of the pipe 5 to be bent, and then, the first air cylinder 22 drives the pipe 5 to be bent to move towards the transition mechanism 3;

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A bending machine, its characterized in that: the bending machine comprises a base (1), a pushing mechanism (2), a transition mechanism (3) and a bending mechanism (4), wherein the base (1) is used for bearing the pushing mechanism (2), the transition mechanism (3) and the bending mechanism (4); the pushing mechanism (2) is used for bearing the pipe (5) to be bent and pushing the pipe (5) to be bent to the bending mechanism (4) along the transition mechanism (3); the transition mechanism (3) can bear the pipe (5) to be bent, which is pushed by the pushing mechanism (2), and limit the pipe (5) to be bent so as to ensure that the pipe (5) to be bent can be bent by the bending mechanism (4); the bending mechanism (4) can bend the pipe (5) to be bent into a bent pipe; the pushing mechanism (2), the transition mechanism (3) and the bending mechanism (4) cooperate with each other to complete the processing of the bent pipe.

2. The bender according to claim 1, wherein: the pushing mechanism (2) comprises a first support frame (21) and a first air cylinder (22), the first support frame (21) is fixedly arranged on the top surface of the base (1), one end, far away from the base (1), of the first support frame (21) is horizontally and fixedly provided with a first support table (211), a containing groove (2111) is formed in the top surface of the first support table (211) along the pushing direction of the pipe (5) to be bent, and the containing groove (2111) is matched with the pipe (5) to be bent; the first air cylinder (22) is detachably connected to one side, far away from the transition mechanism (3), of the first supporting platform (211) through a support and corresponds to the containing groove (2111) so as to push the pipe (5) to be bent to move in the direction close to the transition mechanism (3) along the containing groove (2111).

3. The bender according to claim 2, wherein: the transition mechanism (3) is arranged on one side, away from the first cylinder (22), of the first supporting platform (211), the transition mechanism (3) comprises a second supporting frame (31), a limiting seat (32) and a clamping piece, the second supporting frame (31) is fixedly arranged on the top surface of the base (1), and a second supporting platform (311) is horizontally and fixedly arranged at one end, away from the base (1), of the second supporting frame (31); the limiting seat (32) is arranged on the top surface of the second supporting platform (311), a limiting groove (321) is formed in the limiting seat (32) in a penetrating mode, the length direction of the limiting groove (321) is consistent with the length direction of the containing groove (2111), and the inner diameter of the limiting groove (321) is the same as that of the containing groove (2111) and is matched with the pipe (5) to be bent; the holder includes two sets of second cylinders (33) that are just right to set up each other, and two sets of second cylinders (33) can mutually support and press from both sides the tight fixed with spacing seat (32).

4. The bender according to claim 3, wherein: the containing grooves (2111) are provided with a plurality of grooves, the containing grooves (2111) are uniformly distributed on the first supporting platform (211) along the direction perpendicular to the moving direction of the pipe (5) to be bent, the containing grooves (2111) are different in size and are matched with the pipe (5) to be bent in different specifications, a plurality of limiting grooves (321) are further formed, the inner diameters of the limiting grooves (321) are different, and the containing grooves (2111) are the same in inner diameter and correspond to the positions one to one.

5. The bender according to claim 4, wherein: the bending mechanism (4) is arranged on one side, away from the first supporting table (211), of the second supporting table (311), the bending mechanism (4) comprises a third supporting frame (41), a rotary drum (42), a rotary shaft (45) and a pressing assembly (43), and the third supporting frame (41) is vertically arranged on the top surface of the base (1); the rotary drum (42) is rotatably connected to the third support frame (41) through the rotary shaft (45), any end of the rotary shaft (45) is connected with a motor (421) for driving the rotary shaft (45) to rotate, a plurality of annular clamping grooves (422) are formed in the outer peripheral wall of the rotary drum (42) along the length direction of the rotary drum (42), the widths of the annular clamping grooves (422) are different, but the widths of the annular clamping grooves are identical to the inner diameter of the limiting groove (321) and correspond to the inner diameter of the limiting groove one to one, and the bottom walls of the tops of the annular clamping grooves (422) are flush with the bottom wall of the limiting groove (321) due to the height of the rotary drum (42); the pressing assembly (43) is arranged above the rotary drum (42), and the pressing assembly (43) can press and fix the pipe fitting to be bent and synchronously rotate along with the rotary drum (42).

6. The bender according to claim 5, wherein: the pressing assembly (43) comprises a mounting frame (431) and a pressing piece, the mounting frame (431) is in an inverted U shape, and wing plates at two ends of the mounting frame are fixedly connected to the outer peripheral wall of the rotary drum (42); the compressing pieces are provided with multiple groups, the number of the compressing pieces is the same as that of the ring-shaped clamping grooves (422), the compressing pieces are in one-to-one correspondence with the ring-shaped clamping grooves (422), the compressing pieces are provided with third cylinders (432), the cylinder bodies of the third cylinders (432) are fixedly connected with the mounting frame (431), piston rods of the third cylinder bodies are connected with U-shaped pressing plates (44), the U-shaped pressing plates (44) are matched with the ring-shaped clamping grooves (422), and the pipe fitting to be bent is compressed and fixed under the action of the third cylinders (432).

7. The bender according to claim 6, wherein: an angle adjusting mechanism (6) is arranged between the rotary drum (42) and the third support frame (41), the angle adjusting mechanism (6) comprises an installation disc (61) and a clamping assembly (62), and the installation disc (61) is sleeved on the rotary shaft (45) and fixedly connected with the third support frame (41); the clamping assembly (62) comprises an inserting cylinder (621), an inserting plate (622), a spring (623) and a scale groove (624), the inserting cylinder (621) is arranged on one side, close to the rotary drum (42), of the mounting disc (61), and the distribution direction of the inserting cylinder (621) is consistent with the radius direction of the mounting disc (61); the inserting plate (622) is inserted into the inserting cylinder (621) and is in sliding connection with the inserting cylinder (621); the spring (623) is horizontally arranged in the inserting cylinder (621), one end of the spring (623) is fixedly connected with the inner wall of the inserting cylinder (621) close to one end of the mounting disc (61), and the other end of the spring (623) is fixedly connected with one end of the inserting plate (622) inserted into the inserting cylinder (621); the scale grooves (624) are uniformly arranged on the end surface of the rotary drum (42), and the arrangement direction of the scale grooves (624) is consistent with the radius direction of the end surface of the rotary drum (42); in a normal state, under the action of the spring (623), one end of the insert plate (622) far away from the spring (623) is inserted into the scale groove (624).

8. The bender according to claim 6, wherein: the U-shaped pressing plates (44) are detachably connected with piston rods of the third air cylinders (432) connected with the U-shaped pressing plates.

9. The bender according to claim 8, wherein: rubber pads (441) are adhered to the inner peripheral walls of the U-shaped pressing plates (44).

10. The bender according to claim 3, wherein: the two ends of the limiting grooves (321) are provided with outward-expanding conical surfaces (3211).