CN220781890U - Full-automatic U-shaped pipe bending machine - Google Patents

Abstract

The utility model provides a full-automatic U-shaped pipe bender, which comprises a frame, wherein a feeding mechanism, a bending mechanism, a cutting mechanism and a jacking mechanism are arranged on the frame; the feeding mechanism comprises a fixing frame with two open ends, wherein the fixing frame can move left and right, a lower clamping plate and an upper clamping plate capable of lifting are transversely arranged in the fixing frame, first grooves for fixing pipes are respectively formed in the lower surfaces of the upper clamping plate and the lower clamping plate, and the bending mechanism comprises a top and a supporting frame with two open ends. This full-automatic U-shaped bending machine can last continuous pay-off, buckle the shaping and cut off the complete process of unloading, does not need the manual work in the middle or the frequent supplementary unloading of going up of manipulator, reduction in production cost, can carry out continuous automatic positioning, segmentation, buckling, cutting operation to rectangular shape pipe fitting, only need after long pipe fitting processing is accomplished pack into new pipe fitting can, equipment stand-by time is less, operating time is longer, degree of automation is higher, has improved production efficiency.

Description

Full-automatic U-shaped pipe bending machine

Technical Field

The utility model belongs to the technical field of pipe bending, and particularly relates to a full-automatic U-shaped pipe bending machine.

Background

The pipe bender is a bending processing device for pipe workpieces, which uses different dies to bend and shape the pipe, and is suitable for bending and processing pipe fittings, automobile oil pipes, air pipes, water pipes and air-conditioning pipe connection parts in various shapes.

The existing pipe bending machine is used for bending and forming a fixed-length pipeline, and is used for bending in a centering mode, a new pipe needs to be replaced when a pipe is bent, and frequent feeding and discharging are needed, so that manual feeding and discharging are needed or a manipulator is additionally arranged for feeding and discharging, on the one hand, the cost is high, on the other hand, the pipe bending machine is in a standby state during feeding and discharging, free time exists before and after each processing, the pipe bending machine cannot work continuously, the processing efficiency is low, and the pipe bending machine cannot bend, cut off and bend a long-strip pipe continuously, so that different processing requirements cannot be met.

Disclosure of Invention

The utility model provides a full-automatic U-shaped pipe bender, which aims to solve the problems that the existing pipe bender generally bends and forms a fixed-length pipe, frequent feeding and discharging are needed, continuous work cannot be performed, the processing efficiency is low, continuous processing of bending, cutting and re-bending of a strip-shaped pipe fitting cannot be performed, and different processing requirements cannot be met.

The utility model is realized in such a way that the full-automatic U-shaped pipe bending machine comprises a frame, wherein a feeding mechanism, a bending mechanism, a cutting mechanism and a material ejection mechanism are arranged on the frame;

the feeding mechanism comprises a fixed frame with two open ends, wherein the fixed frame can move left and right, a lower clamping plate and an upper clamping plate which can be lifted are transversely arranged in the fixed frame, and first grooves for fixing pipes are respectively formed in the lower surfaces of the upper clamping plate and the lower clamping plate;

the bending mechanism is positioned at the left side of the feeding mechanism and comprises a supporting frame with an open top and two ends, the top of the supporting frame is fixedly connected with a fixed forming plate, the left end face of the fixed forming plate is arc-shaped, a lifting fixing plate is arranged in an inner cavity of the supporting frame, and the top of the fixing plate, the top, the bottom and the left side of the fixed forming plate are provided with second grooves for accommodating pipes;

the bending mechanism further comprises a rotating frame which is arranged on the left side of the supporting frame and can be turned upwards, a movable plate is arranged on the rotating frame, the surface of the movable plate is fixedly connected with a turnover forming plate, the turnover forming plate is positioned at the lower part of the left end of the fixed forming plate, a space for accommodating a pipe fitting is formed between planes of the turnover forming plate and the lower part, a forming groove is formed in the upper surface of the turnover forming plate, and the rotating frame drives the turnover forming plate to be turned upwards to bend the pipe fitting to the top of the fixed forming plate;

the cutting mechanism comprises a movable frame capable of moving forwards and backwards, a cutting piece and a driving motor for driving the cutting piece to rotate are arranged on the movable frame, and the movable frame drives the cutting piece to move forwards and backwards in a vertical plane where the front side of the fixed forming plate is located;

the material ejection mechanism comprises a mounting plate, a telescopic cylinder is arranged on the mounting plate, the output end of the telescopic cylinder is fixedly connected with a material ejection plate, a vertical groove for accommodating a bent workpiece is formed in the right side surface of the material ejection plate, and the telescopic cylinder stretches to drive the material ejection plate to move to the left side of the fixed forming plate.

Preferably, a casing is arranged at the top of the stand, an electric cabinet is arranged at the rear side of the stand, and a control panel is arranged on the casing.

Preferably, a feeding guide mechanism is arranged on the surface of the frame, which is positioned on the outer side of the feeding mechanism.

Preferably, the feeding mechanism further comprises a feeding motor and a threaded screw rod, the threaded screw rod is driven to rotate by the feeding motor, a screw rod sleeve is connected to the surface of the threaded screw rod in a threaded mode, the screw rod sleeve is fixedly connected with the side face of the fixed frame, and a first guide rail for the fixed frame to move is arranged on the frame.

Preferably, a feeding cylinder for driving the upper clamping plate to lift is vertically arranged at the top of the fixed frame.

Preferably, the bending mechanism further comprises a turnover motor fixedly connected to the frame, a rotating arm is fixedly connected to one side wall of the rotating frame and driven to rotate by the turnover motor, the bending mechanism further comprises a supporting seat positioned on the other side of the rotating frame, and an auxiliary arm fixedly connected with the surface of the rotating frame is rotatably connected to the other end of the supporting seat.

Preferably, an adjusting cylinder is arranged on the rotating frame, and the movable plate is driven by the adjusting cylinder to move left and right.

Preferably, the surface of the turnover forming plate is fixedly connected with a fixing seat, and the right side surface of the fixing seat is fixedly connected with a core rod which can be inserted into the end part of the pipe fitting.

Preferably, the cutting mechanism further comprises a pushing cylinder arranged on the frame, the movable frame is driven by the pushing cylinder, and a second guide rail for the movable frame to move is arranged on the frame.

Preferably, the material ejection mechanism further comprises a material ejection frame covered outside the telescopic cylinder, and a push rod which can extend into the vertical groove is fixedly connected to the right side of the material ejection frame.

Advantageous effects

Compared with the prior art, the utility model has the beneficial effects that: according to the full-automatic U-shaped pipe bending machine, the automatic clamping feeding device is arranged for intermittently and continuously feeding long pipe fittings, after the end part of the pipe fitting is bent and formed, the automatic cutting and blanking can be continuously performed, the complete procedures of continuous feeding, bending and blanking and cutting can be continuously performed, manual or mechanical hand-assisted feeding and blanking are not needed in the middle, the production cost is reduced, continuous automatic positioning, segmentation, bending and cutting operations can be performed on the long pipe fittings, only new pipe fittings are needed to be installed after the processing of the long pipe fittings is completed, the equipment standby time is shortened, the working time is longer, the degree of automation is higher, and the production efficiency is improved.

Drawings

FIG. 1 is a schematic view of the external structure of the present utility model;

FIG. 2 is a schematic perspective view of the present utility model;

FIG. 3 is a schematic perspective view of the present utility model;

FIG. 4 is a schematic diagram of a feeding mechanism according to the present utility model;

FIG. 5 is a schematic view of a feeding mechanism according to the present utility model;

FIG. 6 is a schematic structural view of a bending mechanism according to the present utility model;

FIG. 7 is a schematic structural view of a bending mechanism according to the present utility model;

FIG. 8 is a schematic structural view of a bending mechanism according to the present utility model;

FIG. 9 is a schematic diagram of a bending mechanism according to the present utility model;

FIG. 10 is a schematic view of a cutting mechanism according to the present utility model;

fig. 11 is a schematic structural view of a material ejection mechanism in the present utility model.

In the figure: 10. a frame; 20. a housing; 30. an electric control box; 40. a control panel; 50. a discharge chute; 60. a feeding mechanism; 61. a fixed frame; 62. a lower clamping plate; 63. an upper clamping plate; 64. a feeding cylinder; 65. a support plate; 66. a material guiding pipe; 67. a first guide rail; 68. a feeding motor; 69. a threaded screw rod; 70. a bending mechanism; 71. a turnover motor; 72. a speed reducer; 73. a rotating frame; 74. a movable plate; 75. a fixing seat; 76. a rotating arm; 77. a clamping cylinder; 78. a support frame; 79. a fixing plate; 710. fixing the forming plate; 711. a piston rod; 712. a support base; 713. an auxiliary arm; 714. a core rod; 715. turning over the forming plate; 716. adjusting a cylinder; 80. a cutting mechanism; 81. a movable frame; 82. cutting the sheet; 83. a driving motor; 84. a pushing cylinder; 85. a second guide rail; 90. a material ejection mechanism; 91. a mounting plate; 92. a telescopic cylinder; 93. a liftout plate; 94. a vertical groove; 95. a jacking frame; 96. a push rod; 110. and a feeding guide mechanism.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Referring to fig. 1-11, the present utility model provides a technical solution: a full-automatic U-shaped pipe bending machine comprises a frame 10, wherein a feeding mechanism 60, a bending mechanism 70, a cutting mechanism 80 and a material ejection mechanism 90 are arranged on the frame 10.

The top of the frame 10 is provided with a housing 20, the rear side of the frame 10 is provided with an electric cabinet 30, and the housing 20 is provided with a control panel 40.

The feeding mechanism 60, the bending mechanism 70, the cutting mechanism 80, the ejection mechanism 90 and other mechanisms are arranged inside the casing 20, and the casing 20 plays a role in protection.

The control panel 40 sends instructions to the electric cabinet 30 to perform programming or control and adjustment of the actions of the respective mechanisms.

Further, a feeding guide mechanism 110 is disposed on the surface of the frame 10 outside the feeding mechanism 60.

The feeding guide mechanism 110 can be two rotatable guide rollers which are vertically spaced, grooves are formed in the two guide rollers, the pipe fitting is limited, the pipe fitting penetrates into the grooves, and in the inward movement process of the pipe fitting, the guide rollers synchronously rotate, so that friction is reduced.

The feeding mechanism 60 comprises a fixed frame 61 with two open ends, wherein the fixed frame 61 can move left and right, a lower clamping plate 62 and an upper clamping plate 63 which can be lifted are transversely arranged in the fixed frame 61, and first grooves for fixing pipes are respectively formed in the lower surfaces of the upper clamping plate 63 and the lower clamping plate 62.

Two groups of first grooves can form a group of limit grooves to clamp the pipe fitting.

The pipe fitting gets into from between upper plate 63 and the lower plate 62, then upper plate 63 descends, presss from both sides the pipe fitting to clamp in first recess and realizes fixedly, then fixed frame 61 moves left, drives the pipe fitting through two splint and inwards moves, realizes the pay-off, and after the pay-off is in place, upper plate 63 upwards rises and breaks away from with the pipe fitting, and fixed frame 61 drives two splint and resets right, returns to the initial position, presss from both sides tight pipe fitting again and carries leftwards.

The bending mechanism 70 is located at the left side of the feeding mechanism 60, the bending mechanism 70 comprises a supporting frame 78 with an open top and two ends, the top of the supporting frame 78 is fixedly connected with a fixed forming plate 710, the left end face of the fixed forming plate 710 is arc-shaped, an inner cavity of the supporting frame 78 is provided with a lifting fixing plate 79, and the top of the fixing plate 79, the top, the bottom and the left side of the fixed forming plate 710 are all provided with second grooves for accommodating pipes.

The top of the fixing plate 79 and the second groove at the bottom of the fixing and forming plate 710 form a set of limit grooves with circular cross section for clamping the pipe.

The fixed forming plate 710 and the fixed plate 79 form a group of clamping assemblies, the fixed plate 79 is at a low point first, after the feeding mechanism 60 conveys the front end of the pipe fitting into place, the pipe fitting is positioned between the fixed forming plate 710 and the fixed plate 79, the fixed plate 79 is lifted to match with the fixed forming plate 710 to clamp the pipe fitting, at the moment, the feeding mechanism 60 can reset backwards, clamps the position of the pipeline to the right a certain distance, and the next feeding is prepared.

The bottom of support frame 78 is provided with the clamp cylinder 77, and the piston rod 711 of clamp cylinder 77 link up to the support frame 78 inside, with fixed plate 79 fixed connection, drive fixed plate 79 lift.

After the feeding mechanism 60 feeds in place, the left end extends out of the left side of the lower surface of the fixed forming plate 710, the extending part is the part to be bent, the second grooves on the left side and the top of the fixed forming plate 710 are forming grooves matched with the pipeline, and the left side of the section of the fixed forming plate 710 forms a transverse U-shaped structure.

The bending mechanism 70 further comprises a rotating frame 73 which is arranged on the left side of the supporting frame 78 and can be turned upwards, a movable plate 74 which can move left and right is arranged on the rotating frame 73, a turnover forming plate 715 is fixedly connected to the surface of the movable plate 74, the turnover forming plate 715 is positioned at the lower part of the left end of the fixed forming plate 710, a space for accommodating a pipe fitting is formed between the two planes, a forming groove is formed in the upper surface of the turnover forming plate 715, and the rotating frame 73 drives the turnover forming plate 715 to be turned upwards to bend the pipe fitting to the top of the fixed forming plate 710.

After the pipeline is fed into place, the left end of the pipe fitting is positioned in a forming groove on the upper surface of the turnover forming plate 715, the rotating frame 73 rotates to drive the movable plate 74 and the turnover forming plate 715 to rotate and drive the pipe fitting to bend along the left part of the fixed forming plate 710 until the turnover forming plate 715 rotates to be above the fixed forming plate 710 and parallel to the fixed forming plate 710, and the pipe fitting is bent in the forming grooves on the turnover forming plate 715 and the fixed forming plate 710 to complete bending of the end part of the pipe fitting to form a U shape.

When the turnover forming plate 715 is positioned below, a certain interval is formed between the right end and the fixed forming plate 710, so that mutual interference during rotation is avoided.

After bending, the fixing plate 79 descends to release the clamping and fixing of the pipe fitting, at this time, the bent part at the left end of the pipe fitting is in a free state, the feeding mechanism 60 moves forward to drive the pipe fitting to move leftwards for a certain length, the length is the length of the pipe fitting required by the U-shaped bent piece, at this time, the U-shaped bent piece at the left end is pushed out leftwards to be separated from the fixing forming plate 710 and the turnover forming plate 715, then the fixing plate 79 is lifted again to clamp the pipe fitting, and the feeding mechanism 60 is reset rightwards again.

The cutting mechanism 80 comprises a movable frame 81 capable of moving back and forth, a cutting blade 82 and a driving motor 83 for driving the cutting blade 82 to rotate are arranged on the movable frame 81, and the movable frame 81 drives the cutting blade 82 to move back and forth in a vertical plane where the front side of the fixed forming plate 710 is located.

The cutting blade 82 is mounted on the movable frame 81 through a rotating shaft, the outer edge of the cutting blade 82 is located outside the movable frame 81, and the driving motor 83 and the cutting blade 82 realize transmission through a belt transmission structure.

In the initial state, the cutting mechanism 80 is integrally located at the rear part, after the pipe is bent and pushed out leftwards, the movable frame 81 moves forwards, the bent and withdrawn U-shaped bending part is cut off from the pipe, after the cutting is completed, the cutting mechanism 80 is retracted and reset to wait for the next cutting, and at this time, the pipe still has a part of length located at the left side of the fixed forming plate 710, and the part of length is the length of the pipe required by the U-shaped bending part.

After cutting, the turnover forming plate 715 is still located at the upper part of the fixed forming plate 710 and is in an upside-down form of the turnover forming plate 715, and the movable plate 74 is in an upside-down form, if the turnover forming plate 715 is turned over to a downside for resetting directly, the movable plate 74 is blocked by the end part of the pipe fitting to cause interference, so that in the current state, after enough space is reserved for rightward movement of the turnover forming plate 715 and the movable plate 74, the turnover forming plate 715 is turned over for resetting downwards, after the turnover forming plate 715 is reset to the downside, the movable plate 74 and the turnover forming plate 715 are located at the position opposite to the left side on the rotating frame 73, the turnover forming plate 715 cannot be contacted with the protruding part of the pipe fitting, and the movable plate 74 drives the turnover forming plate 715 to move rightward to the lower part of the pipe fitting again, so that the pipe fitting is located in the forming groove, and then the next steps of bending, cutting and feeding are started.

In the present embodiment, a fixing seat 75 is fixedly connected to the surface of the turnover forming plate 715, and a core rod 714 capable of being inserted into the end of the pipe is fixedly connected to the right side surface of the fixing seat 75.

The fixing seat 75 is located at the left side of the turnover shaping plate 715, when the movable plate 74 drives the turnover shaping plate 715 to move rightwards, the core rod 714 is inserted into the left end of the pipe fitting, then the pipe fitting is bent through integral turnover, and the core rod 714 can support the pipe fitting to prevent the end part of the pipe fitting from being flattened and deformed in the bending process. The core rod 714 only extends into the pipe fitting and is rotated and bent to the inside of the straight pipe part at the upper part of the fixed forming plate 710, and does not enter the inside of the pipe fitting where the arc-shaped part of the U-shaped bending piece is located, so that interference is avoided.

The fixing base 75 is positioned on the right side of the fixed forming plate 710 after being turned over to the upper part, and does not influence the turning degree of the turning forming plate 715 by being pushed between the fixed forming plate 710 and the turning forming plate 715.

The material ejection mechanism 90 comprises a mounting plate 91, a telescopic cylinder 92 is arranged on the mounting plate 91, the output end of the telescopic cylinder 92 is fixedly connected with a material ejection plate 93, a vertical groove 94 for accommodating a bent workpiece is formed in the right side surface of the material ejection plate 93, and the telescopic cylinder 92 stretches to drive the material ejection plate 93 to move to the left side of the fixed forming plate 710.

In this embodiment, after the bending and shaping of the "U" shaped bending piece is pushed out, the telescopic cylinder 92 stretches to drive the ejector plate 93 to move rightward, so that the arc portion of the "U" shaped bending piece is clamped into the vertical groove 94, the ejector plate 93 supports and fixes the "U" shaped bending piece, the pipe fitting shake in the cutting process is prevented from influencing switching or damaging deformation, after the cutting is completed, the "U" shaped bending piece is clamped in the vertical groove 94 of the ejector plate 93, and the telescopic cylinder 92 contracts to drive the ejector plate 93 to move leftward to reset.

The ejection mechanism 90 further includes an ejector rack 95 covered outside the telescopic cylinder 92, and an ejector rod 96 capable of extending into the vertical groove 94 is fixedly connected to the right side of the ejector rack 95.

After the ejector plate 93 is reset with the U-shaped bending piece, the ejector plate 93 is positioned on the right side of the ejector frame 95, the ejector rod 96 can be inserted into the vertical groove 94, the workpiece is ejected out and falls, and discharging is completed.

A discharge chute 50 is provided on the frame 10 below the ejection discharge position to discharge the machined workpiece.

The left side fixedly connected with slide bar of liftout plate 93 is provided with the supporting groove on the mounting panel 91, and the slide bar slides in the supporting groove, leads the motion of liftout plate 93, supports.

Further, the feeding mechanism 60 further comprises a feeding motor 68 and a threaded screw rod 69, the threaded screw rod 69 is driven to rotate by the feeding motor 68, a screw rod sleeve is connected to the surface of the threaded screw rod 69 in a threaded manner, the screw rod sleeve is fixedly connected with the side face of the fixed frame 61, and a first guide rail 67 for the fixed frame 61 to move is arranged on the frame 10.

In this embodiment, the feeding motor 68 can rotate in a forward and reverse direction, and drives the screw rod 69 to rotate through the belt conveying mechanism, so as to drive the screw rod sleeve to move along the length direction of the screw rod 69, and further drive the fixed frame 61 to feed and reset.

The screw rod 69 is mounted on the frame 10 through mounting seats at both ends.

The feeding mechanism 60 further comprises a supporting plate 65 arranged on the left side of the first guide rail 67, a through hole is formed in the surface of the supporting plate 65, a material guide pipe 66 corresponding to the through hole is arranged on the left side surface of the supporting plate 65, the pipe fitting penetrates through the through hole and the material guide pipe 66 to extend out during feeding, the pipe fitting plays a role in supporting and guiding, and the pipe fitting is prevented from being excessively long in hanging distance and inclining downwards and cannot enter a designated position.

Further, a feeding cylinder 64 for driving the upper clamping plate 63 to lift is vertically arranged at the top of the fixed frame 61.

In the present embodiment, the feeding cylinder 64 stretches and contracts to drive the upper clamping plate 63 to lift and clamp the pipe fitting in cooperation with the lower clamping plate 62, so that the pipe fitting can be driven to move for feeding.

Further, the bending mechanism 70 further includes a turnover motor 71 fixedly connected to the frame 10, a rotating arm 76 is fixedly connected to one side wall of the rotating frame 73, the rotating arm 76 is driven to rotate by the turnover motor 71, the bending mechanism 70 further includes a supporting seat 712 located at the other side of the rotating frame 73, and an auxiliary arm 713 fixedly connected to the other end of the supporting seat 712 and the surface of the rotating frame 73 is rotatably connected.

The turnover motor 71 is fixedly installed on the frame 10, one end of the rotating arm 76 is connected through the speed reducer 72, and the rotating arm 76 is driven to rotate, so that the rotating frame 73 is driven to rotate, and the auxiliary arm 713 supports the rotating frame 73 from the other side, so that the rotating frame 73 is more stable and cannot incline.

The axis of rotation of the turret 73 should be a straight line at which the axis of rotation of the rotating arm 76 and the output shaft of the speed reducer 72 are located.

The rotating frame 73 is provided with an adjusting cylinder 716, and the movable plate 74 is driven to move left and right by the adjusting cylinder 716.

The movable plate 74 is driven to move by the adjusting cylinder 716, so that the turnover forming plate 715 is driven to move, and the position of the turnover forming plate 715 is changed, so that the position of the turnover forming plate 715 on the movable plate 74 is adjusted before bending and before resetting.

The cutting mechanism 80 further comprises a pushing cylinder 84 arranged on the frame 10, the movable frame 81 is driven by the pushing cylinder 84, and a second guide rail 85 for the movable frame 81 to move is arranged on the frame 10.

In the present embodiment, the pushing cylinder 84 drives the movable frame 81 to move forward and backward, thereby driving the driving motor 83 and the cutting blade 82 to move integrally, and simultaneously the cutting blade 82 rotates to perform cutting.

Working principle: in operation, the pipe is fed by the feeding guide mechanism 110 and enters the feeding mechanism 60, the pipe fitting enters from between the upper clamping plate 63 and the lower clamping plate 62, then the upper clamping plate 63 descends to clamp the pipe fitting in the first groove to realize fixation, then the fixing frame 61 moves leftwards, the pipe fitting is driven to move inwards by the two clamping plates to realize feeding, after the pipe fitting is fed in place, the upper clamping plate 63 is lifted upwards to separate from the pipe fitting, the fixing frame 61 drives the two clamping plates to reset rightwards, the pipe fitting is returned to the initial position, the pipe fitting is clamped again to be conveyed leftwards, the pipe fitting is conveyed in place by the feeding mechanism 60, the pipe fitting is positioned between the fixing forming plate 710 and the fixing plate 79, the fixing plate 79 is lifted to be matched with the fixing forming plate 710 to clamp the pipe fitting, at the moment, the feeding mechanism 60 is reset backwards to clamp the pipe fitting to a certain distance rightwards, the pipe fitting is ready for next feeding, the left end of the pipe fitting is positioned in the forming groove on the upper surface of the turnover forming plate 715 after the pipe fitting is fed in place, the rotating frame 73 rotates to drive the movable plate 74 and the turnover shaping plate 715 to rotate to drive the pipe fitting to bend along the left part of the fixed shaping plate 710 until the turnover shaping plate 715 rotates to be parallel to the fixed shaping plate 710 above the fixed shaping plate 710, the pipe fitting is bent in shaping grooves on the turnover shaping plate 715 and the fixed shaping plate 710 to complete bending of the end part of the pipe fitting to form a U shape, after bending shaping, the fixed plate 79 descends to release clamping fixation of the pipe fitting, at the moment, the bending part at the left end of the pipe fitting is in a free state, the feeding mechanism 60 moves forwards to drive the pipe fitting to move leftwards for a certain length, the length is the length of the pipe fitting required by the U-shaped bending part, at the moment, the U-shaped bending part at the left end is pushed leftwards out and separated from the fixed shaping plate 710 and the turnover shaping plate 715, then the fixed plate 79 lifts again to clamp the pipe fitting, the feeding mechanism 60 resets right again, after pipe fitting bending is completed and pushing out to the left, the telescopic cylinder 92 stretches, the ejector plate 93 is driven to move right, the arc-shaped part of the U-shaped bending piece is clamped and embedded into the vertical groove 94, the ejector plate 93 supports and fixes the U-shaped bending piece, pipe fitting shaking influences switching or damage deformation in the cutting process is prevented, the movable frame 81 moves to the front side, the bent and withdrawn U-shaped bending piece is cut off from the pipe fitting, after cutting is completed, the U-shaped bending piece is clamped in the vertical groove 94 of the ejector plate 93, the telescopic cylinder 92 contracts to drive the ejector plate 93 to move to the left to reset and cut, the cutting mechanism 80 is retracted to reset, the next cutting is waited, the ejector plate 93 carries the U-shaped bending piece to reset, the ejector plate 93 is positioned on the right side of the ejector frame 95, the ejector rod 96 can be inserted into the vertical groove 94, the workpiece is ejected and falls off, and discharging is completed.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (10)

1. The utility model provides a full-automatic U-shaped bending machine, includes frame (10), its characterized in that: a feeding mechanism (60), a bending mechanism (70), a cutting mechanism (80) and a material ejection mechanism (90) are arranged on the frame (10);

the feeding mechanism (60) comprises a fixed frame (61) with two open ends and capable of moving left and right, a lower clamping plate (62) and an upper clamping plate (63) capable of lifting are transversely arranged in the fixed frame (61), and first grooves for fixing pipes are respectively formed in the lower surfaces of the upper clamping plate (63) and the lower clamping plate (62);

the bending mechanism (70) is positioned at the left side of the feeding mechanism (60), the bending mechanism (70) comprises a support frame (78) with an open top and two ends, the top of the support frame (78) is fixedly connected with a fixed forming plate (710), the left end face of the fixed forming plate (710) is arc-shaped, a lifting fixing plate (79) is arranged in an inner cavity of the support frame (78), and the top of the fixing plate (79) and the top, the bottom and the left side of the fixed forming plate (710) are respectively provided with a second groove for accommodating a pipe;

the bending mechanism (70) further comprises a rotating frame (73) which is arranged on the left side of the supporting frame (78) and can be turned upwards, a movable plate (74) which can move left and right is arranged on the rotating frame (73), a turnover forming plate (715) is fixedly connected to the surface of the movable plate (74), the turnover forming plate (715) is positioned at the lower part of the left end of the fixed forming plate (710), a space for accommodating a pipe fitting is formed between the two planes, a forming groove is formed in the upper surface of the turnover forming plate (715), and the rotating frame (73) drives the turnover forming plate (715) to be turned upwards to bend the pipe fitting to the top of the fixed forming plate (710);

the cutting mechanism (80) comprises a movable frame (81) capable of moving forwards and backwards, a cutting piece (82) and a driving motor (83) for driving the cutting piece (82) to rotate are arranged on the movable frame (81), and the movable frame (81) drives the cutting piece (82) to move forwards and backwards in a vertical plane where the front side of the fixed forming plate (710) is located;

the material ejection mechanism (90) comprises a mounting plate (91), a telescopic cylinder (92) is arranged on the mounting plate (91), a material ejection plate (93) is fixedly connected to the output end of the telescopic cylinder (92), a vertical groove (94) for accommodating a bent workpiece is formed in the right side face of the material ejection plate (93), and the telescopic cylinder (92) stretches to drive the material ejection plate (93) to move to the left side of the fixed forming plate (710).

2. A fully automatic U-bend machine as claimed in claim 1, wherein: the top of frame (10) is provided with casing (20), the rear side of frame (10) is provided with electric cabinet (30), be provided with control panel (40) on casing (20).

3. A fully automatic U-bend machine as claimed in claim 1, wherein: the surface of the frame (10) is positioned at the outer side of the feeding mechanism (60) and is provided with a feeding guide mechanism (110).

4. A fully automatic U-bend machine as claimed in claim 1, wherein: the feeding mechanism (60) further comprises a feeding motor (68) and a threaded screw rod (69), the threaded screw rod (69) is driven to rotate by the feeding motor (68), a screw rod sleeve is connected to the surface of the threaded screw rod (69) in a threaded mode, the screw rod sleeve is fixedly connected with the side face of the fixed frame (61), and a first guide rail (67) for the fixed frame (61) to move is arranged on the frame (10).

5. A fully automatic U-bend machine as claimed in claim 1, wherein: the top of the fixed frame (61) is vertically provided with a feeding cylinder (64) for driving the upper clamping plate (63) to lift.

6. A fully automatic U-bend machine as claimed in claim 1, wherein: the bending mechanism (70) further comprises a turnover motor (71) fixedly connected to the frame (10), a rotating arm (76) is fixedly connected to one side wall of the rotating frame (73), the rotating arm (76) is driven to rotate by the turnover motor (71), the bending mechanism (70) further comprises a supporting seat (712) positioned on the other side of the rotating frame (73), and the supporting seat (712) is rotationally connected with an auxiliary arm (713) fixedly connected with the surface of the rotating frame (73).

7. A fully automatic U-bend machine as claimed in claim 1, wherein: an adjusting cylinder (716) is arranged on the rotating frame (73), and the movable plate (74) is driven by the adjusting cylinder (716) to move left and right.

8. A fully automatic U-bend machine as claimed in claim 7, wherein: the surface of the turnover forming plate (715) is fixedly connected with a fixing seat (75), and the right side surface of the fixing seat (75) is fixedly connected with a core rod (714) which can be inserted into the end part of the pipe fitting.

9. A fully automatic U-bend machine as claimed in claim 1, wherein: the cutting mechanism (80) further comprises a pushing air cylinder (84) arranged on the frame (10), the movable frame (81) is driven by the pushing air cylinder (84), and a second guide rail (85) for the movable frame (81) to move is arranged on the frame (10).

10. A fully automatic U-bend machine as claimed in claim 1, wherein: the material ejection mechanism (90) further comprises a material ejection frame (95) covered outside the telescopic cylinder (92), and a push rod (96) which can extend into the vertical groove (94) is fixedly connected to the right side of the material ejection frame (95).