CN206951862U - Free bending machine - Google Patents

Abstract

The utility model relates to a free pipe bending machine. The frame is provided with a pipe feeding mechanism, a rotating mechanism, a clamping mechanism and a bending mechanism. Tube motor; both ends of the overturning table rotate with the frame, and the rotating mechanism includes a rotating motor, which makes the overturning table rotate along its bearing; the clamping mechanism includes a fixed clip and a movable clip, and the movable clip is connected to a clamping hydraulic cylinder; The folding mechanism is driven by a swing hydraulic cylinder to connect one end of the swing arm. The other end of the swing arm is provided with a moving roller. The fixed roller is matched with the frame in rotation, and the axis of the rotating shaft passes through the swing point. The fixed roller is axially parallel to the moving roller, and the peripheral surface Close; the entrance of the bending gap, the clamping gap and the pipe feeding gap are located on the same straight line and arranged in sequence. The above-mentioned free pipe bending machine can realize the functions of pipe clamping, bending, feeding, rotating and re-bending, and can process three-dimensional pipe bends.

Description

free pipe bender

technical field

The utility model relates to a pipe bending machine for bending metal pipes.

Background technique

The pipe bender is a machine used for bending metal pipes. When it works, it usually bends the pipe after clamping the pipe with hydraulic power to drive the bending mechanism.

The current general-purpose pipe bending machines can usually only realize the bending function in one plane, that is, the bending direction of the pipe can only be in one plane. If the bending function in the three-dimensional direction is required, the structure of the pipe bending machine involved is very complicated and expensive.

Utility model content

The technical problem to be solved by the utility model is to provide a free pipe bending machine with compact structure and capable of realizing three-dimensional bending function.

The technical scheme that the utility model solves its technical problem adopts is:

The free pipe bending machine includes a frame on which a pipe feeding mechanism, a rotating mechanism, a clamping mechanism and a bending mechanism are arranged. Roller, the tube feeding gap is formed between the circumferential surfaces of the paired tube feeding rollers, and the tube feeding roller is connected to the tube feeding motor through transmission;

The two ends of the turning table are rotated and matched with the frame through bearings. The rotating shaft of the turning table is provided with a pipe hole for passing the pipe along the axis, and the axis of the pipe hole coincides with the direction of the pipe feeding gap. The rotating mechanism includes a rotating motor, a rotating motor It is connected with the transmission of the turning table so that the turning table can rotate along its bearing;

The clamping mechanism includes a fixed clip and a movable clip that cooperate with each other, the movable clip is connected with a clamping hydraulic cylinder, and there is a clamping gap between the fixed clip and the movable clip;

The bending mechanism includes a fixed roller, a swing hydraulic cylinder and a swing arm. The swing hydraulic cylinder is connected to one end of the swing arm through transmission, and the connection point is a swing point. The rollers are rotatably matched with the frame, and the axis of the rotating shaft of the fixed roller passes through the swing point, the fixed roller and the movable roller are axially parallel, and the peripheral surfaces are close to each other, forming a bending gap between the peripheral surfaces of the fixed roller and the movable roller;

The entrance of the bending gap, the clamping gap and the pipe feeding gap are located on the same straight line and arranged in sequence.

Further, the rotating mechanism is located between the clamping mechanism and the pipe feeding mechanism, and the rotating motor is connected to the turning table through a gear mechanism. The gear mechanism includes a small gear and a large gear that mesh with each other. The output shaft is connected, the large gear is connected with the turning table, and the axis of the large gear is also provided with a pipe hole for the passage of the pipe, and the pipe hole of the large gear coincides with the axis of the pipe hole of the turning table.

Further, supporting rollers are respectively provided at the feeding end of the equipment, and between the clamping gap and the large gear, for supporting the pipe to roll through the upper part of the peripheral surface of the supporting rollers.

Further, the frame is also provided with a bending support frame, the bending support frame is provided with a guide groove adapted to the running track of the swing arm, the swing arm is provided with a slider, and the slider is embedded in in the guide groove and form a snug fit.

Further, the surrounding surfaces of the pipe feeding rollers, the fixed rollers, the moving rollers and the supporting rollers are respectively provided with grooves adapted to the pipes.

The beneficial effect of the utility model is that: the above-mentioned free pipe bending machine has a compact structure and low cost, and can realize three-dimensional bending function.

Description of drawings

Fig. 1 is the three-dimensional schematic diagram of the pipe bender of the present utility model;

Fig. 2 is a three-dimensional schematic diagram of a second viewing angle of the pipe bender of the present invention, omitting the upper panel of the frame;

Fig. 3 is a three-dimensional schematic diagram of the third viewing angle of the pipe bender of the present invention, omitting the side plate of the swing hydraulic cylinder;

The reference numerals in the figure are: including frame 1, support roller 11, pipe feeding mechanism 2, turning table 21, pipe feeding roller 22, pipe feeding motor 23, rotating mechanism 3, large gear 31, rotating motor 32, clamping mechanism 4. Fixed clamp 41, movable clamp 42, clamping hydraulic cylinder 43, bending mechanism 5, fixed roller 51, swing arm 52, moving roller 521, bending support frame 53, swing hydraulic cylinder 54.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

The free pipe bending machine includes a frame 1, and the frame 1 is provided with a pipe feeding mechanism 2, a rotating mechanism 3, a clamping mechanism 4 and a bending mechanism 5, and the pipe feeding mechanism 2 includes a turning table 21, a turning table 21 is provided with a pair of tube delivery rollers 22, forming a tube delivery gap between the peripheral surfaces of the pair of tube delivery rollers 22, and the tube delivery rollers 22 are connected with a tube delivery motor 23;

The two ends of the turning table 21 are rotatably matched with the frame 1 through bearings. The rotating shaft of the turning table 21 is provided with a pipe hole for passing the pipe along the axis, and the axis of the pipe hole coincides with the direction of the pipe feeding gap. The rotating mechanism 3 includes a rotating The motor 32, the rotating motor 32 is connected with the transmission of the turning table 21, so that the turning table 21 can rotate along its bearing;

The clamping mechanism 4 includes a fixed clip 41 and a movable clip 42 that cooperate with each other, the movable clip 42 is connected with a clamping hydraulic cylinder 43, and there is a clamping gap between the fixed clip 41 and the movable clip 42;

The bending mechanism 5 includes a fixed roller 51, a swing hydraulic cylinder 54, and a swing arm 52. The swing hydraulic cylinder 54 is connected to one end of the swing arm 52 in transmission, and the connection point is a swing dot. The other end of the swing arm 52 is provided with a rotating fitting The moving roller 521, the fixed roller 51 is in rotation with the frame, and the axis of the rotating shaft of the fixed roller 51 passes through the swing point, the fixed roller 51 is axially parallel to the movable roller 521, and the peripheral surface is close, Form a bending gap with the surrounding surface of the moving roller 521;

The entrance of the bending gap, the clamping gap and the pipe feeding gap are located on the same straight line and arranged in sequence.

The above-mentioned free pipe bending machine can bend the pipe into a three-dimensional shape. As shown in Figures 1 to 3, the frame 1 is used to support the various parts of the equipment, the pipe feeding mechanism 2 is mainly used for feeding and feeding the pipes, the rotating mechanism 3 is used for the circumferential rotation of the pipes, and the clamping mechanism 4 can clamp the pipes. The bending mechanism 5 can bend the pipe, and cooperate with the rotating mechanism 3 to process a three-dimensional bent pipe.

As shown in Figure 2, the pipe feeding mechanism 2 includes a turning table 21, and the pipe feeding roller 22 is arranged on the turning table 21. The pipe roller 22 is driven and rotated by the pipe feeding motor 23, which can clamp the pipe and feed it forward.

The tube feeding roller 22 should be made of flexible and deformable material, such as rubber, which is convenient for clamping the tube and increasing the friction of feeding. If a hard roller, such as a metal roller, is used, a spring can be set on the frame to press the two rollers against each other. , can also clamp the pipe.

The rotating motor 32 can drive the turning table 21 to rotate along its bearing. The rotating shaft of the turning table 21 is provided with a through hole along the axis for the pipe to pass through. The outer side of the rotating shaft cooperates with the frame 1 through the bearing. That is to say, the pipe can be fed by the pipe delivery roller 22, and passes through the pipe hole. Subsequently, the rotating mechanism 3 can drive the turning table 21 to rotate, and then drive the pipe to rotate in the circumferential direction, and cooperate with the bending mechanism 5 to perform three-dimensional bending.

When the pipe is bent, it needs to be fixed by the clamping mechanism 4. The principle is that the pipe passes through the clamping gap between the fixed clamp 41 and the movable clamp 42, and the clamping hydraulic cylinder 43 drives the movable clamp 42 to press against the fixed clamp 41. , to clamp the pipe, the clamping hydraulic cylinder 43 may preferably be a telescopic hydraulic cylinder.

As shown in Figures 1 and 3, the swinging hydraulic cylinder 54 of the bending mechanism 5 is connected to the swinging dot of the swinging arm 52 through transmission, so that when the output shaft of the swinging hydraulic cylinder 54 rotates, it can drive the swinging arm 52 around the axis where the swinging dot is located. rotate.

Let the peripheral surface of the fixed roller 51 and the movable roller 521 be at the same height, the fixed roller 51 and the movable roller 521 are axially parallel, and the axis of the fixed roller 51 passes through the swing point, then the movable roller 521 at the other end of the swing arm 52 can rotate around the fixed roller. Roller 51 peripheral surface rotates, and pipe can be bent.

The installation mode of fixed roller 51 and moving roller 521 is to rotate and cooperate, and can rotate freely, and when pipe is bent, friction can be reduced, and pipe is prevented from being crushed.

The entrance of the bending gap, the clamping gap and the pipe feeding gap of the equipment are located on the same straight line and arranged in sequence. When the equipment is running, the tube feeding roller 22 drives the pipe to be processed to pass through the pipe feeding gap, the clamping gap and the bending gap in sequence. At the entrance of the gap, the clamping mechanism 4 fixes the pipe, and the swing hydraulic cylinder 54 acts to make the moving roller 521 rotate around the circumference of the fixed roller 51, so that the pipe is bent under force; then the clamping mechanism 4 loosens the pipe, and the pipe delivery mechanism 2. Send the pipe forward for a certain distance, the rotating mechanism 3 acts to rotate the pipe circumferentially, the clamping mechanism 4 fixes the pipe again, the swing hydraulic cylinder 54 moves again, and the pipe bends again, and then the pipe bent in three dimensions can be processed .

Preferably, an automatic control system can be set up for the pipe bender, such as a PLC control system, a single-chip microcomputer control system, etc., and the motor can be driven by the control system to run automatically, and the pipe bend can be processed according to a preset program.

Preferably, the rotating mechanism 3 may be located between the clamping mechanism 4 and the pipe feeding mechanism 2, the rotating motor 32 is connected to the turning table 21 through a gear mechanism, and the gear mechanism includes a small gear and a large gear 31 meshing with each other. , the pinion is connected to the output shaft of the rotary motor 32, the large gear 31 is connected to the turning table 21, the axis of the large gear 31 is also provided with a pipe hole for the passage of the pipe, and the pipe hole of the large gear 31 is connected to the turning table 21 The axes of the piercing holes are coincident.

As shown in Figure 2, the rotating mechanism 3 is realized by a motor and a gear mechanism. The rotating motor 32 drives the large gear 31 to rotate, and the large gear 31 drives the turning table 21 to turn over along the axis. Since the pipe delivery roller 22 clamps the pipe, it can Drive the tube to rotate in the circumferential direction. The axis of the bull gear 31 is also provided with a pipe-through hole for pipes to pass through. The apparatus of the above-mentioned embodiment is compact in structure.

More preferably, support rollers 11 may be provided at the feed end of the equipment, and between the clamping gap and the large gear 31 , for supporting the pipe to roll through the upper surface of the support rollers 11 .

As shown in Figure 2, when the pipe is fed into the equipment, the pipe can be supported on the upper end of the peripheral surface of the supporting roller 11, and the pipe can be kept straight to prevent bending due to gravity. When the pipe is fed, the supporting roller 11 can move along the feeding direction Free scrolling.

More optionally, the frame 1 may also be provided with a bending support frame 53, the bending support frame 53 is provided with a guide groove adapted to the running track of the swing arm 52, and the swing arm 52 is provided with a slide The slider is embedded in the guide groove and forms a sliding fit.

As shown in Figure 3, the slider of the swing arm 52 is embedded in the guide groove of the bending support frame 53. When the equipment performs bending action, the bending support frame 53 can form a support for the swing arm 52, so that the bending action is accurate. Stablize.

In addition, the pipe feeding roller 22, the fixed roller 51, the moving roller 521 and the supporting roller 11 may also be provided with grooves adapted to the pipes on their peripheral surfaces. In order to improve the matching accuracy of the equipment and the pipe, and improve the processing accuracy.

Claims (5)

1. free bending machine, including frame (1), it is characterised in that be provided with tube feeding mechanism (2), whirler on the frame (1) Structure (3), clamp system (4) and bending mechanism (5), the tube feeding mechanism (2) include roll-over table (21), and roll-over table is set on (21) Have it is paired send pipe roller (22), it is paired send to be formed between pipe roller (22) side face send ligament, send pipe roller (22) to be driven It is connected with and send pipe motor (23)；

Roll-over table (21) both ends are rotatably assorted by bearing and frame (1), and roll-over table (21) rotating shaft is provided with for managing along axis The perforation hole that son passes through, and poling axially bored line, with sending ligament direction to overlap, the rotating mechanism (3) includes electric rotating machine (32), electric rotating machine (32) is connected with roll-over table (21), roll-over table (21) is rotated along its bearing；

The clamp system (4) includes the geometrical clamp (41) to cooperate and activity folder (42), and the activity folder (42) is connected with Compression hydraulic cylinder (43), it is clamping gap between geometrical clamp (41) and activity folder (42)；

The bending mechanism (5) includes determining roller (51), oscillating motor (54) and swing arm (52), the oscillating motor (54) be connected swing arm (52) one end, and tie point is swings round dot, swing arm (52) other end, which is provided with, to be rotatably assorted Dynamic roller (521), it is described to determine roller (51) and gantry rotation and coordinate, and the axis for determining roller (51) rotating shaft passes through the swing Round dot, determines roller (51) and dynamic roller (521) is axially in parallel, and side face is close, determine roller (51) and dynamic roller (521) side face it Between formed bending gap；

It is described to bend gap entrance, clamping gap and send ligament to be located along the same line, and order is arranged.

2. free bending machine as claimed in claim 1, it is characterised in that the rotating mechanism (3) be located at clamp system (4) and Between tube feeding mechanism (2), electric rotating machine (32) is connected with roll-over table (21) by gear mechanism transmission, and the gear mechanism includes Intermeshing little gear and gear wheel (31), the little gear and electric rotating machine (32) output axis connection, gear wheel (31) with Roll-over table (21) connects, and gear wheel (31) axis is also equipped with the perforation hole passed through for pipe, and the poling of gear wheel (31) Hole overlaps with the poling axially bored line of roll-over table (21).

3. free bending machine as claimed in claim 2, it is characterised in that equipment feed end, and the clamping gap with it is big Between gear (31), back-up roller wheel (11) is respectively arranged with, for supporting pipe to be rolled from the back-up roller wheel (11) side face top It is dynamic to pass through.

4. free bending machine as claimed in claim 1, it is characterised in that the frame (1) is additionally provided with bending support frame (53), the bending support frame (53) is provided with the guide groove being adapted to swing arm (52) running orbit, and the swing arm (52) sets Sliding block is equipped with, the sliding block is embedded in guide groove, and is formed and be slidably matched.

5. free bending machine as claimed in claim 3, it is characterised in that described to send pipe roller (22), determine roller (51), dynamic rolling Wheel (521) and back-up roller wheel (11), side face are respectively arranged with the groove being adapted to pipe.