CN220216351U - Pipe bending machine capable of being used for bending flat pipe - Google Patents

Abstract

The utility model discloses a pipe bending machine capable of bending flat pipes, which comprises a frame, wherein the frame is provided with a pipe bending machine head, a feeding mechanism and a pipe supporting platform, the pipe bending machine head comprises a machine head seat and a traversing drive capable of driving the machine head seat to move left and right, the machine head seat is provided with two groups of bending mechanisms, the two groups of bending mechanisms respectively bend pipe fittings along a clockwise direction and bend the pipe fittings along a anticlockwise direction, the machine head seat is provided with a lifting drive capable of driving the two groups of bending mechanisms to move up and down, the feeding mechanism comprises a pipe supporting device capable of supporting the pipe fittings and a pipe conveying mechanism capable of conveying the pipe fittings forwards to a working position of the bending mechanism, and the pipe supporting platform is arranged beside the pipe bending machine head and used for supporting bent parts on the pipe fittings. The utility model can automatically bend clockwise or anticlockwise at the corresponding position on the pipe fitting according to the requirement, and can form complex bent pipes at one time.

Description

Pipe bending machine capable of being used for bending flat pipe

Technical Field

The utility model relates to the technical field of pipe bending machines, in particular to a pipe bending machine capable of bending flat pipes.

Background

Along with the improvement of new energy automobile power battery package capacity and the demand of quick charge, the heat transfer volume of power battery package promotes gradually, and the demand of cooling is hardly satisfied to the mode of liquid cooling, adopts the direct heat transfer of refrigerant mode to begin extensive application, adopts in the direct heat transfer of refrigerant mode, and microchannel directly cooling flat tube plays key effect.

The straight cold plate flat tube is formed by bending a long straight flat tube with the length of 8 meters, and the straight cold plate flat tube can be finally formed after being bent for a plurality of times in the production process. However, the traditional pipe bending machine can generally bend the pipe fitting for 1-3 times at a time, so that the pipe fitting is bent into an L shape, a U shape or a G shape, for example, the patent with publication number CN105537335A is similar, the pipe bending machine disclosed in the patent can bend the pipe fitting for 1 time at a time, and if the pipe bending machine is adopted for processing the pipe fitting, the pipe fitting is required to be bent and molded for multiple times, so that the working efficiency is low.

Disclosure of Invention

In view of the above, the utility model aims to provide a pipe bending machine capable of automatically bending an ultra-long pipe for multiple times and forming a complex bent pipe at one time, and being used for bending a flat pipe.

The utility model adopts the technical proposal for solving the technical problems that:

the utility model provides a bending machine that can be used to bend flat pipe, includes the frame, be provided with in the frame:

the pipe bending machine head comprises a machine head seat and a transverse moving driver capable of driving the machine head seat to move left and right relative to a machine frame, wherein two groups of bending mechanisms are arranged on the machine head seat, the two groups of bending mechanisms are respectively a first bending mechanism capable of bending a pipe fitting in a clockwise direction and a second bending mechanism capable of bending the pipe fitting in a counterclockwise direction, a first lifting driver capable of driving the first bending mechanism to move up and down and a second lifting driver capable of driving the second bending mechanism to move up and down are arranged on the machine head seat, and the two groups of bending mechanisms can move to working positions capable of bending the pipe fitting when moving relative to the machine frame;

the pipe feeding mechanism comprises a pipe supporting device capable of supporting the pipe fitting and a pipe feeding mechanism capable of conveying the pipe fitting forwards to the working position of the bending mechanism;

the pipe supporting platform is arranged at the side of the pipe bending machine head and used for supporting the bent part on the pipe fitting.

The bending machine head bends on a pipe fitting to form two bending parts in different directions, the method comprises the following steps that firstly, a headstock moves left and right to enable a first bending mechanism to move to a working position, the pipe fitting is bent clockwise or anticlockwise to form a first bending part, then a pipe feeding mechanism conveys the pipe fitting forwards for a certain distance, then the headstock moves left and right to enable the other bending mechanism to move to the working position, meanwhile, the first bending mechanism moves upwards or downwards relative to the headstock to enable the first bending mechanism to avoid a region swept by the pipe fitting when bending, and finally, a second bending mechanism bends the pipe fitting towards the direction opposite to the first bending part to form a second bending part.

In a preferred embodiment of the present utility model, the bending mechanism includes a lifting base movable up and down with respect to the headstock, a bending die rotatably mounted on the lifting base, a bending driver capable of driving the bending die to rotate, and a master die located at one side of the bending die.

In a preferred embodiment of the present utility model, the bending die includes a rotating shaft and a clamping die disposed at an upper end of the rotating shaft, the clamping die is provided with a clamping die shaft coaxial with the rotating shaft, a winding portion disposed at one side of the clamping die shaft, and a pipe accommodating groove formed between the clamping die shaft and the winding portion and capable of accommodating a pipe, and the rotating shaft winds the pipe inserted in the pipe accommodating groove when rotating together with the clamping die.

In a preferred scheme of the utility model, the clamping die comprises an upper clamping die fixed at the upper end of the rotating shaft and an upper clamping die positioned above the lower clamping die, the upper surface of the lower clamping die is provided with a lower disc protruding upwards, the edge of the upper surface of the lower clamping die is provided with a lower boss protruding upwards, the lower surface of the upper clamping die is provided with an upper disc corresponding to the lower disc, the edge of the lower surface of the upper clamping die is provided with an upper boss corresponding to the lower boss, the upper disc and the lower disc jointly form the clamping die shaft, the upper boss and the lower boss jointly form the bending part, the upper clamping die is connected with a die opening driver capable of driving the upper clamping die to move up and down relative to the lower clamping die, the upper boss and the lower boss are clung or close to each other when the upper clamping die moves down to the lowest point, and an opening for allowing a pipe fitting to pass through is formed between the upper boss and the lower boss when the upper clamping die moves up to the highest point.

In a preferred scheme of the utility model, the rotating shaft is hollow and tubular, the lower clamping die is provided with a through hole opposite to the inner hole of the rotating shaft, the die opening driver comprises a cylinder or an electric cylinder positioned below the rotating shaft, the output end of the die opening driver is connected with a vertical rod, and the vertical rod penetrates through the inner hole of the rotating shaft and the through hole of the lower clamping die and is connected with the upper clamping die.

In a preferred embodiment of the utility model, the mold opening drive is a cylinder, an oil cylinder or a motor.

In a preferred scheme of the utility model, the bending driver is a motor, the output end of the motor is connected with a speed reducer, and the output end of the speed reducer is connected with the rotating shaft through a chain wheel and chain mechanism to drive the rotating shaft and the clamping die to rotate around the axis of the rotating shaft together.

In a preferred scheme of the utility model, the lifting seat is provided with the profiling mounting plate and the profiling driver capable of driving the profiling mounting plate to move left and right, the profiling is arranged on the profiling mounting plate in a front-back sliding manner through the guide rail mechanism, the profiling mounting plate can be close to or far away from a pipe clamped by the clamping die when moving left and right with the profiling, the profiling is abutted with the pipe when the clamping die rotates to bend the pipe, and the profiling can move back and forth along with the corresponding part on the pipe in the process of bending the pipe so as to keep relative static between the profiling and the pipe.

In a preferred embodiment of the present utility model, the profile actuator is a cylinder or an oil cylinder or a motor.

In a preferred embodiment of the utility model, the profile is further provided with a positioning groove into which the edge portion of the pipe is clamped.

In a preferred embodiment of the present utility model, the hosting platform includes a platform bracket fixed relative to the frame, a follower rail mounted on the top of the platform bracket along the left-right direction, and a follower platen slidably mounted on the follower rail, the follower platen being concave and disposed around the elbow head.

In a preferred scheme of the utility model, the transverse moving driver is a motor, the output end of the motor is connected with a speed reducer, and the output end of the speed reducer is connected with the headstock through a screw pair to drive the headstock to move left and right.

In a preferred embodiment of the utility model, the first lifting drive is a cylinder or an oil cylinder or a motor, and the second lifting drive is a cylinder or an oil cylinder or a motor.

In a preferred embodiment of the present utility model, the pipe feeding mechanism includes a pipe clamping device capable of clamping a pipe, and a pipe feeding driving device capable of driving the pipe clamping device to move forward and backward, the pipe clamping device includes at least three pipe clamping units, a supporting structure for supporting the pipe is provided on each pipe clamping unit, a limiting device is provided between adjacent pipe clamping units to limit a maximum stroke of forward and backward movement of each pipe clamping unit relative to the adjacent pipe clamping unit, the pipe clamping device is located at a front side of the pipe clamping device and connected with a pipe clamping unit at a front end, the pipe clamping device pulls the pipe clamping unit to move forward when moving forward relative to the frame to extend the pipe clamping device, and pulls the pipe clamping unit to move backward when moving backward relative to the frame to shorten the pipe clamping device.

In a preferred embodiment of the present utility model, the frame is provided with a first guide member arranged along a front-rear direction, all the pipe-supporting units are mounted on the first guide member in a row and can slide along the first guide member, and the supporting structure is a first through hole arranged on the pipe-supporting unit along the front-rear direction, and the first through hole can be used for the pipe to pass through and be in sliding fit with the pipe-supporting unit.

In a preferred embodiment of the utility model, the support unit comprises a first slide mounted slidingly on the first guide, a mounting seat fixed on the first slide, and a first sliding sleeve fixed on the mounting seat, the first perforation being provided on the first sliding sleeve.

In a preferred scheme of the utility model, the limiting structure comprises a limiting chain and a push rod, wherein two ends of the limiting chain are respectively connected with two adjacent hosting units to limit the maximum distance between the two hosting units, and the push rod can be abutted with the adjacent hosting units to limit the minimum distance between the two hosting units.

In a preferred scheme of the utility model, the rack is provided with a second guide piece arranged along the front-back direction, the pipe clamping device comprises a second sliding seat arranged on the second guide piece in a sliding mode, a fixed clamping plate arranged on the second sliding seat, a movable clamping plate arranged above the fixed clamping plate and a pipe clamping driver capable of driving the movable clamping plate to move up and down, and clamping grooves used for clamping pipe fittings are formed in the upper surface of the fixed clamping plate and the lower surface of the movable clamping plate.

In a preferred embodiment of the utility model, the second slide and the mounting seat are fixedly connected by a plate.

In a preferred scheme of the utility model, a core rod capable of being sleeved in an inner hole of a pipe fitting is arranged on the rack, the rear end of the core rod is fixed with the rack, the core rod sequentially passes through first through holes on all the hosting units, the front end of the core rod is a free end, a supporting piece positioned in front of the pipe clamping device is arranged on the rack, a supporting groove which can be used for placing the pipe fitting therein and can support the core rod is arranged on the supporting piece, the bottom surface of the supporting groove is level with the inner bottom surface of the first through hole, the core rod is a flat rod, the left-right width of the core rod is larger than the upper-lower height of the core rod, the front end of the flat rod is a pointed end which gradually narrows from back to front, and the left side surface and the side surface of the pointed end are outwards convex transitional cambered surfaces.

In a preferred scheme of the utility model, a plurality of second sliding sleeves are arranged behind the pipe supporting device at intervals, second perforations which are arranged along the front-rear direction are arranged on the second sliding sleeves, and all the second perforations are arranged in a row for the pipe fitting to pass through.

The beneficial effects of the utility model are as follows:

the first pipe bending machine capable of bending flat pipes adopts two groups of bending mechanisms which can respectively bend the pipe fittings clockwise and anticlockwise, can bend the pipe fittings clockwise or anticlockwise at corresponding positions according to requirements, can automatically bend the overlength pipe fittings for multiple times, and can form complex bent pipes at one time.

The second bending mechanism and the second bending mechanism are both arranged to be capable of moving up and down, one bending mechanism can move upwards or downwards by a certain stroke in the process of bending the pipe fitting, and the area swept by the pipe fitting during bending is avoided, so that the pipe fitting bending machine is safe and reliable.

Thirdly, setting the profiling to be movable back and forth, wherein in the process of bending the pipe fitting, the profiling can move back and forth along with the corresponding part on the pipe fitting so as to keep relative static between the profiling and the pipe fitting; the surface of the pipe fitting is prevented from being scratched due to relative sliding between the pipe fitting and the profiling.

Fourth, in this feeding mechanism of bending machine, because each host unit can be along with pressing from both sides the pipe device back and forth and remove in order to make host device extension or shorten, when bending the pipe fitting, each host unit can always the dispersed support play each part of pipe fitting, can avoid bending the in-process pipe fitting and appear longer overhang section and produce the deformation.

Drawings

FIG. 1 is a perspective view of a serpentine microchannel direct chill plate flat tube;

FIG. 2 is a schematic diagram of a pipe bender;

FIG. 3 is a top view of the main portion of the bending machine when the first bending mechanism bends a pipe fitting;

FIG. 4 is a top view of the main portion of the bending machine when the second bending mechanism bends a pipe fitting;

FIG. 5 is a perspective view of the elbow head;

FIG. 6 is an exploded view of the elbow fitting;

FIG. 7 is a cross-sectional view of the bending mechanism with the upper clamping die open;

FIG. 8 is a cross-sectional view of the bending mechanism with the upper clamping die closed;

FIG. 9 is a front view of a clamping die;

FIG. 10 is an exploded view of the clamping die;

FIG. 11 is a left side view of the feed mechanism and frame in a first state of the utility model;

FIG. 12 is a left side view of the feed mechanism and frame in a second state of the utility model;

FIG. 13 is one of the partial schematic structural views of the feed mechanism;

FIG. 14 is a second partial schematic view of the feed mechanism;

FIG. 15 is a schematic view of the structure of the tube clamping device;

FIG. 16 is a schematic view of the front end of the core rod;

FIG. 17 is a schematic view of the structure of the support;

fig. 18 is a front view of the hosting platform.

Detailed Description

The technical scheme of the present utility model will be clearly and completely described below with reference to the accompanying drawings.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear …) in the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly. Furthermore, the description of "preferred," "less preferred," and the like, herein is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "preferred", "less preferred" may include at least one such feature, either explicitly or implicitly.

Referring to fig. 1 to 18, the utility model provides a pipe bender capable of bending flat pipes, which comprises a frame 1, wherein a pipe bender head 2, a feeding mechanism and a supporting platform 4 are arranged on the frame 1.

The pipe bender head 2 comprises a headstock 21 and a traversing driver 221 capable of driving the headstock 21 to move left and right relative to the frame 1, two groups of bending mechanisms 23 are arranged on the headstock 21, the two groups of bending mechanisms 23 are respectively a first bending mechanism capable of bending the pipe fitting 3 in a clockwise direction and a second bending mechanism capable of bending the pipe fitting 3 in a counterclockwise direction, a first lifting driver 241 capable of driving the first bending mechanism to move up and down and a second lifting driver 242 capable of driving the second bending mechanism to move up and down are arranged on the headstock 21, and when the two groups of bending mechanisms 23 move relative to the frame 1, the two groups of bending mechanisms 23 can move to working positions capable of bending the pipe fitting 3. The feeding mechanism comprises a pipe supporting device capable of supporting the pipe fitting 3 and a pipe feeding mechanism capable of conveying the pipe fitting 3 forward to the working position of the bending mechanism 23. The support platform 4 is arranged beside the tube bending head 2 and is used for supporting the bent part on the tube 3.

The bending method of the pipe bender head 2 on the pipe fitting 3 to form two bending parts in different directions is as follows, firstly, the headstock 21 moves left and right to enable the first bending mechanism or the second bending mechanism to move to the working position, the pipe fitting 3 is bent clockwise or anticlockwise to form a first bending part, then the pipe feeding mechanism conveys the pipe fitting 3 forwards for a certain distance, then the headstock 21 moves left and right to enable the other bending mechanism 23 to move to the working position, meanwhile, the first bending mechanism 23 moves upwards or downwards relative to the headstock 21 to enable the first bending mechanism 23 to avoid the area swept by the pipe fitting 3 when bending, and finally the second bending mechanism 23 bends the pipe fitting 3 towards the direction opposite to the first bending part, so that a second bending part can be formed.

The steps are repeated for at least 3 times, so that a serpentine flat tube can be formed, such as the serpentine microchannel direct-cooling flat tube in fig. 1.

The pipe bending machine for bending flat pipes, provided by the utility model, adopts two groups of bending mechanisms 23 which can respectively bend the pipe fitting 3 clockwise and anticlockwise, can bend the pipe fitting 3 clockwise or anticlockwise at corresponding positions according to requirements, can automatically bend the overlength pipe fitting 3 for multiple times, and can form complex bent pipes at one time.

Referring to fig. 5 to 8, the bending mechanism 23 includes a lifting base 231 that is movable up and down with respect to the headstock 21, a bending die rotatably mounted on the lifting base 231, a bending driver 232 that can drive the bending die to rotate, and a master 233 that is located on one side of the bending die. The bending die comprises a rotating shaft 234 and a clamping die 235 arranged at the upper end of the rotating shaft 234, wherein the clamping die 235 is provided with a clamping die shaft 2351 coaxial with the rotating shaft 234, a bending part 2352 positioned at one side of the clamping die shaft 2351, and a pipe placing groove 2353 which is formed between the clamping die shaft 2351 and the bending part 2352 and can be used for accommodating the pipe fitting 3, and the rotating shaft 234 bends the pipe fitting 3 inserted in the pipe placing groove 2353 when carrying the clamping die 235 to rotate together.

In a preferred embodiment of the present utility model, the clamping die 235 includes an upper clamping die 235a fixed at an upper end of the rotating shaft 234, and an upper clamping die 235a located above the lower clamping die 235b, wherein an upper surface of the lower clamping die 235b is provided with a lower disc protruding upward, an edge of an upper surface of the lower clamping die 235b is provided with a lower boss protruding upward, a lower surface of the upper clamping die 235a is provided with an upper disc corresponding to the lower disc, an edge of a lower surface of the upper clamping die 235a is provided with an upper boss corresponding to the lower boss, the upper disc and the lower disc together form the clamping die shaft 2351, the upper boss and the lower boss together form a winding part 2352, the upper clamping die 235a is connected with an opening driving device 239 capable of driving the opening driving device to move up and down relative to the lower clamping die 235b, the upper boss and the lower boss are tightly attached or pressed together when the upper clamping die 235a moves up to a highest point, and an opening through which the pipe fitting 3 can be formed between the upper boss and the lower boss.

The die opening driver 239 is a cylinder or motor. The rotating shaft 234 is hollow and tubular, a through hole opposite to the inner hole of the rotating shaft 234 is formed in the lower clamping die 235b, the die opening driver 239 comprises a cylinder or an electric cylinder positioned below the rotating shaft 234, the output end of the die opening driver 239 is connected with a vertical rod 238, and the vertical rod 238 penetrates through the inner hole of the rotating shaft 234 and the through hole of the lower clamping die 235b and is connected with the upper clamping die 235 a.

Before bending the pipe fitting 3, under the power action of the pipe feeding mechanism, the front end of the pipe fitting 3 moves forward and passes through the accommodating groove on the clamping die 235 of the first bending mechanism, after the pipe fitting 3 moves forward in place, the bending driver 232 drives the rotating shaft 234 and the clamping die 235 to rotate together, so that a first bending part can be wound on the pipe fitting 3, and if necessary, the pipe fitting 3 can be bent once again through the first bending mechanism, so that a U-shaped part is formed on the pipe fitting 3; after the round of operation of the first bending mechanism is completed, the die opening driver 239 pushes the vertical rod 238 upwards, so that the upper clamping die 235a can be opened upwards, and then the first bending mechanism moves, so that the pipe fitting 3 can be separated from the opening between the upper clamping die 235a and the lower clamping die 235 b; then the clamping die 235 on the second bending mechanism is opened, then the second bending mechanism moves to the working position to clamp the pipe fitting 3 into the clamping die 235 on the second bending mechanism, then the clamping die 235 is closed, and the second bending operation can be performed on the pipe fitting 3.

In a preferred embodiment of the present utility model, the bending driver 232 is a motor, the output end of the motor is connected to the speed reducer 222, and the output end of the speed reducer 222 is connected to the rotating shaft 234 through a sprocket chain mechanism, a gear set or a synchronous toothed belt mechanism to drive the rotating shaft 234 and the clamping die 235 to rotate together around the axis of the rotating shaft 234.

As a further improvement of the above-mentioned scheme, the lifting seat 231 is provided with a profiling mounting plate 236 and a profiling driver 237 capable of driving the profiling mounting plate 236 to move left and right, and the profiling driver 237 is an air cylinder, an oil cylinder or a motor. The profiling 233 is slidably mounted back and forth on a profiling mounting plate 236 by a rail mechanism, and the profiling mounting plate 236 can move toward and away from the pipe 3 clamped by the clamping die 235 when moving left and right with the profiling 233. When the clamp die 235 rotates to bend the pipe fitting 3, the profiling 233 can be abutted against the pipe fitting 3, and the profiling 233 props against the pipe fitting 3 to avoid deformation of the pipe fitting 3; in addition, the profiling 233 is provided to be movable back and forth, and the profiling 233 can be moved back and forth along with the corresponding portion on the pipe 3 during bending of the pipe 3 so as to keep relatively stationary between the profiling 233 and the pipe 3. Avoiding the relative sliding between the pipe fitting 3 and the profiling 233 to scratch the surface of the pipe fitting 3. Further, the profile 233 is further provided with a positioning groove 2331 into which the edge portion of the pipe 3 is caught. The positioning groove 2331 can position the pipe 3 and provide a certain supporting force for the pipe 3.

Preferably, the traverse driver 221 is a motor, the output end of the motor is connected with a speed reducer 222, and the output end of the speed reducer 222 is connected with the headstock 21 through a screw pair to drive the headstock 21 to move left and right.

The first elevating driver 241 is a cylinder or an oil cylinder or a motor, and the second elevating driver 242 is a cylinder or an oil cylinder or a motor. When the two are motors, a ball screw nut mechanism is needed to be matched.

The frame 1 is fixed with a nose mounting plate 101, a guide rail is arranged between the nose seat 21 and the nose mounting plate 101 for reducing friction force, a guide rail is arranged between the lifting seat 231 and the nose seat 21, a guide rail is also arranged between the profiling mounting plate 236 and the lifting seat 231, and a sliding sleeve is arranged between the vertical rod 238 and the rotating shaft 234.

In some embodiments of the present utility model, the clamping die 235 may take other forms, such as a structure formed by splicing left and right parts. It is also possible to use a structure in which the clamp shaft 2351 and the winding portion 2352 are separated, wherein the clamp shaft 2351 is a single component and the winding portion 2352 is another single component.

Referring to fig. 18, the escrow platform 4 includes a platform bracket 41 fixed with respect to the frame 1, a follower rail 42 mounted on top of the platform bracket 41 in the left-right direction, and a follower platen 43 slidably mounted on the follower rail 42, the follower platen 43 being concave and disposed around the bender head 2. In the process of processing the pipe fitting 3, the bent part of the pipe fitting 3 is supported on the follow-up table plate 43, the part rotates in the horizontal direction in the bending process of the pipe fitting 3, and the part moves left and right together with the follow-up table plate 43 in the rotating process, so that most of the bent part of the pipe fitting 3 is always positioned on the follow-up table plate 43, and bending deformation caused by too long hanging sections on the pipe fitting 3 is avoided.

Referring to fig. 13 to 17, the pipe feeding mechanism includes a pipe clamping device 51 capable of clamping the pipe member 3, and a pipe feeding driving device 52 capable of driving the pipe clamping device 51 to move forward and backward, and the pipe holding device includes at least three holding units 61, such as 5, 8, 10. Each of the pipe-gripping units 61 is provided with a supporting structure for supporting the pipe 3, a limiting device is arranged between the adjacent pipe-gripping units 61 to limit the maximum stroke of the forward and backward movement of each pipe-gripping unit 61 relative to the adjacent pipe-gripping unit 61, the pipe-gripping device 51 is positioned at the front side of the pipe-gripping unit and connected with the foremost pipe-gripping unit 61, the pipe-gripping device 51 pulls the pipe-gripping unit 61 to move forward to extend the pipe-gripping device when moving forward relative to the frame 1, and the pipe-gripping device 51 pulls the pipe-gripping unit 61 to move backward to shorten the pipe-gripping device when moving backward relative to the frame 1.

When the pipe bending machine is used for processing the ultra-long flat straight pipe, the pipe fitting 3 is firstly required to be installed on the pipe supporting device manually, the pipe fitting 3 is supported by the supporting structures on the pipe supporting units 61, after the pipe clamping device 51 is in a shortened state shown in fig. 2, the pipe clamping device 51 clamps the pipe fitting 3, then the pipe bending machine is started to bend the pipe fitting 3, the pipe clamping device 51 is driven to move forwards under the power of the pipe conveying driving device 52 to convey one end of the pipe fitting 3 to a bending position, the pipe clamping device 51 moves forwards and simultaneously carries all the pipe supporting units 61 or part of the pipe supporting units 61 to move forwards, so that the pipe supporting device is switched to an extension state, then the bending mechanism 23 on the pipe bending machine head 2 can bend the set position on the pipe fitting 3, after bending is completed, the pipe clamping device 51 is loosened, then moves backwards to the set pipe clamping position, finally the pipe fitting 3 is clamped and pushed forwards by a set stroke, and then the next round of bending operation is carried out until the pipe fitting 3 is bent and molded. By adopting the design, when the pipe fitting 3 is bent, each pipe supporting unit 61 can always support each part of the pipe fitting 3 in a dispersed manner, and long hanging sections on the pipe fitting 3 in the bending process can be prevented from deforming only by setting the maximum distance between the pipe supporting units 61 to a proper range.

In a preferred embodiment of the present utility model, the frame 1 is provided with a first guide 102 arranged along a front-rear direction, all the tube units 61 are mounted on the first guide 102 in a row and can slide along the first guide 102, the supporting structure is a first through hole 6101 arranged on the tube units 61 along the front-rear direction, and the first through hole 6101 can allow the tube 3 to pass through and be in sliding fit with the tube units 61. Specifically, the upper portion of the frame 1 is fixed with a main beam, the first guide 102 is a guide rail disposed on the lower surface of the main beam, the hosting unit 61 includes a first slide seat 611 slidably mounted on the first guide 102, a mounting seat 612 fixed on the first slide seat 611, and a first sliding sleeve 613 fixed on the mounting seat 612, and the first through hole 6101 is disposed on the first sliding sleeve 613.

The frame 1 is provided with a second guide 103 arranged along the front-rear direction, the second guide 103 is a guide rail positioned below the first guide 102, the pipe clamping device 51 comprises a second sliding seat 511 slidably mounted on the second guide 103, a fixed clamping plate 512 arranged on the second sliding seat 511, a movable clamping plate 513 positioned above the fixed clamping plate 512, and a pipe clamping driver 514 capable of driving the movable clamping plate 513 to move up and down, and clamping grooves 515 for clamping the pipe fitting 3 are formed in the upper surface of the fixed clamping plate 512 and the lower surface of the movable clamping plate 513. The second sliding seat 511 is fixedly connected with the mounting seat 612 through a plate. The clamp actuator 514 may be a cylinder, cylinder or motor, with the cylinder being optimal.

In a preferred embodiment of the present utility model, the limiting structure includes a limiting chain 62 and a push rod 63, both ends of the limiting chain 62 are respectively connected with two adjacent escrow units 61 to define a maximum distance between the two escrow units 61, and the push rod 63 can abut with the adjacent escrow units 61 to define a minimum distance between the two escrow units 61. In this solution, when the pipe clamping device 51 pulls the first pipe clamping unit 61 forward, the distance between the first pipe clamping unit 61 and the second pipe clamping unit 61 is gradually increased, and when the first chain is straightened, the second pipe clamping unit 61 is pulled to move forward together, and the pipe clamping device 51 is pulled to move forward again by a certain distance until the pipe clamping device 51 moves to a set position. When the pipe clamping device 51 moves backward with the first pipe supporting unit 61, the distance between the first pipe supporting unit 61 and the second pipe supporting unit 61 is gradually reduced, and when the first pipe supporting unit 61 is propped against the second pipe supporting unit 61, the second pipe supporting unit 61 is pushed to move backward together, the pipe clamping device continues to move a certain distance, and the next pipe supporting unit 61 is pushed to move backward until the pipe clamping device 51 moves to a set position.

In some embodiments of the present utility model, the limiting device may take other forms, such as a rope instead of the chain.

In some embodiments of the present utility model, the pipe clamping device 51 may take other forms, such as two clamping blocks capable of rotating relatively, and the pipe clamping device may be realized by driving the two clamping blocks to rotate relatively by a motor or release the pipe.

The clamping tube driving device can adopt a cylinder, an electric cylinder and the like, and the feeding tube driving device 52 is preferably a combination of a motor and a screw pair.

As a further improvement of the above solution, the frame 1 is provided with the core rod 7 that can be sleeved in the inner hole of the pipe 3, the rear end of the core rod 7 is fixed with the frame 1, the core rod 7 sequentially passes through the first through holes 6101 on all the hosting units 61, the front end of the core rod 7 is a free end, the frame 1 is provided with the supporting member 12 positioned in front of the pipe clamping device 51, the supporting member 12 is provided with the bracket 121 in which the pipe 3 can be placed and which can support the core rod 7, and the bottom surface of the bracket 121 is flush with the inner bottom surface of the first through hole 6101. The core bar 7 is a flat bar, the left-right width of the core bar 7 is larger than the up-down height of the core bar, the front end part of the flat bar is a pointed head 71 which gradually narrows from back to front, and the left side surface and the right side surface of the pointed head 71 are outwards convex transitional cambered surfaces 711. By adopting the design, the pipe fitting 3 can be supported in the pipe fitting 3, the pipe fitting 3 is prevented from deforming in the bending process, and the pipe fitting 3 is installed on the feeding device by sleeving one end of the pipe fitting 3 on the core rod 7 from the front end on the core rod 7, then pushing the pipe fitting 3 to a set position backwards, and the part of the pipe fitting 3 inserted into the first through hole 6101 is positioned between the core rod 7 and the first sliding sleeve 613.

Further, a plurality of second sliding sleeves 8 are arranged at intervals behind the pipe supporting device, second perforations 81 are arranged along the front-rear direction on the second sliding sleeves 8, and all the second perforations 81 and the first perforations 6101 are arranged in a row for the pipe 3 to pass through. By adopting the design, the length of the supporting structure of the whole pipe fitting 3 can be further increased, and the bending and feeding device can be used for bending and feeding longer pipe fittings 3.

The foregoing description of the preferred embodiments of the present utility model should not be construed as limiting the scope of the utility model, but rather should be understood to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model as defined by the following description and drawings or any application directly or indirectly to other relevant art(s).

Claims (10)

1. The utility model provides a bending machine that can be used to bend flat pipe, includes frame (1), its characterized in that is provided with on frame (1):

the pipe bending machine head (2) comprises a machine head seat (21) and a transverse moving driver (221) capable of driving the machine head seat (21) to move left and right relative to a machine frame (1), two groups of bending mechanisms (23) are arranged on the machine head seat (21), the two groups of bending mechanisms (23) are respectively a first bending mechanism capable of bending a pipe fitting (3) in a clockwise direction and a second bending mechanism capable of bending the pipe fitting (3) in a counterclockwise direction, a first lifting driver (241) capable of driving the first bending mechanism to move up and down and a second lifting driver (242) capable of driving the second bending mechanism to move up and down are arranged on the machine head seat (21), and the two groups of bending mechanisms (23) can move to working positions capable of bending the pipe fitting (3) when moving relative to the machine frame (1);

the feeding mechanism comprises a pipe supporting device capable of supporting the pipe fitting (3) and a pipe conveying mechanism capable of conveying the pipe fitting (3) forwards to the working position of the bending mechanism (23);

and the supporting platform (4) is arranged beside the pipe bender head (2) and is used for supporting the bent part on the pipe fitting (3).

2. The bending machine for bending flat tubes according to claim 1, wherein the bending mechanism (23) comprises a lifting seat (231) which can move up and down relative to the headstock (21), a bending die rotatably mounted on the lifting seat (231), a bending driver (232) capable of driving the bending die to rotate, and a profiling (233) positioned on one side of the bending die.

3. The pipe bending machine for bending flat pipes according to claim 2, wherein the bending die comprises a rotating shaft (234) and a clamping die (235) arranged at the upper end of the rotating shaft (234), the clamping die (235) is provided with a clamping die shaft (2351) coaxial with the rotating shaft (234), a bending part (2352) positioned at one side of the clamping die shaft (2351) and a pipe placing groove (2353) which is formed between the clamping die shaft (2351) and the bending part (2352) and can be used for accommodating the pipe fitting (3), and the rotating shaft (234) bends the pipe fitting (3) inserted into the pipe placing groove (2353) in a winding way when rotating together with the clamping die (235).

4. A pipe bender for bending flat pipes according to claim 3, wherein the clamping die (235) comprises a lower clamping die (235 b) fixed at the upper end of the rotating shaft (234), an upper clamping die (235 a) located above the lower clamping die (235 b), a lower disc protruding upwards is arranged on the upper surface of the lower clamping die (235 b), an upper disc corresponding to the lower disc is arranged on the lower surface of the upper clamping die (235 a), an upper boss corresponding to the lower disc is arranged on the lower surface of the upper clamping die (235 a), the upper disc and the lower disc jointly form an upper clamping die shaft (2351), the upper boss and the lower boss jointly form a bending part (2352), an opening die driver (239) capable of driving the upper disc to move upwards and downwards relative to the lower clamping die (235 b) is connected with the upper clamping die (235 a), and the upper boss and the lower boss can be made to be close to the upper boss (235 a) or the upper boss when the upper boss and the lower boss are closest to each other.

5. The pipe bending machine for bending flat pipes according to claim 4, wherein the rotating shaft (234) is hollow, the lower clamping die (235 b) is provided with a through hole opposite to the inner hole of the rotating shaft (234), the die opening driver (239) comprises a cylinder or an electric cylinder positioned below the rotating shaft (234), the output end of the die opening driver (239) is connected with a vertical rod (238), and the vertical rod (238) passes through the inner hole of the rotating shaft (234) and the through hole of the lower clamping die (235 b) and is connected with the upper clamping die (235 a).

6. A pipe bender for bending flat pipes according to claim 3, wherein the lifting base (231) is provided with a profiling mounting plate (236) and a profiling driver (237) capable of driving the profiling mounting plate (236) to move left and right, the profiling (233) is slidably mounted on the profiling mounting plate (236) back and forth through a guide rail mechanism, the profiling mounting plate (236) can approach or separate from a pipe fitting (3) clamped by the clamping die (235) when moving left and right with the profiling (233), the profiling (233) is abutted with the pipe fitting (3) when the clamping die (235) rotates to bend the pipe fitting (3), and the profiling (233) can move back and forth along with corresponding parts on the pipe fitting (3) during bending the pipe fitting (3) so as to keep the profiling (233) and the pipe fitting (3) relatively static.

7. A bending machine for bending flat tubes according to claim 1, characterized in that the hosting platform (4) comprises a platform support (41) fixed relative to the frame (1), a follower rail (42) mounted on top of the platform support (41) in the left-right direction, and a follower platen (43) slidingly mounted on the follower rail (42), the follower platen (43) being concave and being arranged around the tube bending head (2).

8. Tube bending machine usable for bending flat tubes according to claim 1, wherein the tube feeding mechanism comprises a tube gripping device (51) capable of gripping a tube (3), and a tube feeding driving device (52) capable of driving the tube gripping device (51) to move forward and backward, the tube gripping device comprises at least three tube gripping units (61), a bearing structure for bearing the tube (3) is arranged on each tube gripping unit (61), a limiting device is arranged between adjacent tube gripping units (61) to limit the maximum stroke of the forward and backward movement of each tube gripping unit (61) relative to the adjacent tube gripping unit (61), the tube gripping device (51) is positioned at the front side of the tube gripping device and connected with the foremost tube gripping unit (61), the tube gripping device (51) pulls the tube gripping unit (61) to move forward when moving forward relative to the frame (1) to elongate the tube gripping device, and the tube gripping device (51) pulls the tube gripping unit (61) to move backward when moving backward relative to the frame (1) to shorten the tube gripping device.

9. The pipe bender for bending flat pipes according to claim 8, wherein the frame (1) is provided with first guide members (102) arranged along the front-rear direction, all the pipe supporting units (61) are mounted on the first guide members (102) in a row and can slide along the first guide members (102), the supporting structure is a first through hole (6101) arranged on the pipe supporting units (61) along the front-rear direction, and the first through hole (6101) can allow the pipe (3) to pass through and be in sliding fit with the pipe supporting units (61).

10. The pipe bending machine capable of bending flat pipes according to claim 9, characterized in that a core bar (7) capable of being sleeved in an inner hole of a pipe fitting (3) is installed on the frame (1), the rear end of the core bar (7) is fixed with the frame (1), the core bar (7) sequentially passes through first through holes (6101) on all hosting units (61) and the front end of the core bar (7) is a free end, a supporting piece (12) positioned in front of the pipe clamping device (51) is arranged on the frame (1), a supporting groove (121) capable of being used for placing the pipe fitting (3) therein and supporting the core bar (7) is arranged on the supporting piece (12), the bottom surface of the supporting groove (121) is flush with the inner bottom surface of the first through holes (6101), the core bar (7) is a flat bar, the left and right width of the core bar (7) is larger than the upper and lower heights of the core bar, the front end of the flat bar is a tapered tip (71) gradually from back to front, and the left and right sides of the flat bar (71) are transition surfaces of the tapered tip (71).