CN203292254U - Pipe bending machine - Google Patents

Abstract

The utility model relates to a pipe bending machine, a machine frame of which is provided with a pushing device for conveying pipe fittings, a pair of pipe bending shafts are provided on the left side of the pushing device, each pipe bending shaft is provided with a pipe bending wheel which can rotate around it, and the outer circumference of the pipe bending wheel is provided with an arc groove which matches the diameter of the pipe fitting; a limiting seat is fixedly provided on the right side of the pipe bending shaft; two semicircular positioning grooves are provided at the front and back of the left side of the limiting seat, which are used to limit the pair of pipe bending shafts respectively; a disc 1 suitable for eccentric rotation is provided below the pipe bending shaft; when the disc 1 rotates eccentrically, one of the pair of pipe bending shafts is used as the axis center, and a pipe bending wheel is rotated around the other pipe bending wheel to bend the pipe fitting located between the pair of pipe bending wheels.

Description

a pipe bending machine

technical field

The utility model relates to a pipe bender, in particular to a pipe bender whose working surface can rotate synchronously, which is used for bending and forming heat dissipation pipes for electrical appliances such as refrigerators, freezers, air conditioners, etc. Longer or softer heat pipes.

Background technique

The structure of the existing pipe bending machine is: a pushing device for conveying pipe fittings is provided on a platform, and the pipe fittings are pushed to the pipe bending device on the platform along with the rail by using the pushing device. Bending into a serpentine tube of required size, however, during the bending process, manual assistance is required between the tube body and the platform, that is, during the bending process of the tube, the head of the tube needs to be manually operated to follow the bending direction Rotate, otherwise the bending cannot be completed smoothly.

Utility model content

The technical problem to be solved by the utility model is to provide a pipe bending machine with a higher degree of automation.

In order to solve the above-mentioned technical problems, the utility model provides a pipe bending machine, which includes: a frame, on which is provided a push device for conveying pipe fittings, a pair of pipe bend shafts are provided on the left side of the push device, each bend The pipe shafts are respectively provided with bending wheels that can rotate around them; the right side of the pipe bending shaft is fixed with a limit seat; the left side of the limit seat is provided with two semicircular positioning grooves for Respectively limit the position of the pair of elbow shafts; a disk 1 suitable for eccentric rotation is provided below the elbow shaft; To make one bending wheel rotate around the other bending wheel, and bend the pipe between the pair of bending wheels; a turntable is also provided under the bending wheel; an eccentric rotation of the disc At a certain angle, the turntable is suitable for rotating a corresponding angle around the center of the turntable.

The push device includes: a feeding clip, a guide rail and a lead screw arranged in parallel, the left end of the guide rail and the lead screw is fixedly provided with a support, the feeding clip is slidably fitted on the guide rail and its left and right movement is controlled by the lead screw, the lower part of the feeding clip There are grippers for clamping pipe fittings.

The left end of the support is fixedly provided with a clamping mechanism for clamping pipe fittings. The pair of pipe bending shafts is arranged on the left side of the clamping mechanism. arc-shaped grooves with matching diameters; the pair of elbow shafts are fixed on the disc one, and the connecting seat at the bottom center of the disc one is connected with the top of the transmission shaft through the first universal joint, and the bottom of the transmission shaft is the first The two universal joints are connected with a transmission transmission, and the transmission is connected with a servo motor and two transmissions.

A cylinder is fixed above the left side of the clamping mechanism, and the lower end of the piston of the cylinder is provided with a retaining bar for aligning the ends of a plurality of pipes before the pipes are bent.

The lower end of the clamping mechanism is fixed on the hollow support, and the limit seat is fixed on the hollow support.

One side of the disc one is provided with an eccentric positioning mechanism, and the eccentric positioning mechanism includes: a hydraulic cylinder or an air cylinder, and a guide wheel arranged at the end of the piston rod of the hydraulic cylinder or air cylinder; Among them, the hydraulic cylinder or air cylinder presses the guide wheels against the side of the disc 1 and rolls them with each other, and then limits the position of the disc 1 so that the elbow shaft fits in a corresponding positioning groove.

The working method of the pipe bender includes:

A. After stacking multiple pipe fittings up and down, they pass through the arc-shaped groove between the pushing device and the pipe bending wheel in turn, and extend to the turntable;

B. Use the cylinder to control the lowering of the retaining bar, manually move each pipe fitting to align the ends, return the retaining bar, and fix the pipe fitting when the pushing device moves the pipe fitting to the left to a suitable position;

C. Drive disc 1 to rotate, and at the same time, the eccentric positioning mechanism exerts force on disc 1, so that the bottom of the first bend shaft in the pair of bend shafts fixed on the disc 1 enters the limit seat (23) in a positioning slot adjacent to it, and then make the disc one rotate eccentrically, and make the second elbow axis of the pair of elbow shafts (10) surround the first elbow The shaft rotates; the pipe is bent under the action of the bending wheels on the pair of bending shafts (10); during the bending process, the rotary table is synchronously controlled The bending direction of the pipe fitting is rotated, and the part of the pipe fitting on the left side of the pipe bending wheel is driven to turn a corresponding angle in the bending direction to complete a bending step of the pipe fitting.

Compared with the prior art, the technical effect that the utility model has is:

(1) The pipe bending machine of the utility model can realize the electric control of feeding, pipe bending and rotary table rotation, so that the above three working processes do not need manual operation and reduce the working intensity;

(2) The clamping and loosening process is controlled by high-pressure gas, and the control process is simple and efficient;

(3) The stop bar can align the ends of multiple pipe fittings, so that multiple pipe fittings can be bent synchronously;

(4) The positioning groove limits the bending axis so that the bending wheel can rotate around another bending axis;

(5) The eccentric positioning machine limits the eccentric rotation of disc 1 so that it always makes eccentric rotation around the bend axis;

(6) The pipe bending wheel on the pipe bending shaft can be disassembled, and different types of pipe bending wheels can be used according to different sizes of pipe fittings;

(7) The gearbox and disc one are connected by two universal joints, so that disc one will not interfere with the gearbox when it rotates eccentrically.                       

Description of drawings

In order to clearly illustrate the innovative principle of the invention and its technical advantages over existing products, a possible embodiment is described below by means of a non-limiting example of the application of said principle with the help of the accompanying drawings. In the picture:

Fig. 1 is the front view of pipe bender;

Figure 2 is a side view of the pipe bender;

Figure 3 is a side sectional view of the pipe bender;

Figure 4 is a top view of the pipe bender;

Figure 5 is a top view of the pallet of the pipe bender;

Fig. 6 is the component assembly drawing of pipe bender;

Figure 7 is a top view of the eccentric positioning mechanism;

Fig. 8 is a top view of the transmission mechanism of the pipe bender.

Detailed ways

As shown in Figures 1-6, the pipe bending machine of the present invention includes: a chassis 1, a frame 2, a pipe fitting 3, a console 4, a guide rail 5, a screw 6, a feeding clamp 7, a support 8, and a clamping mechanism 9 , pipe bending shaft 10, pipe bending wheel 11, cylinder 12, retaining bar 13, supporting plate 14, turntable 15, large gear 16, pinion gear 17, servo motor one 18, transmission shaft 19, first universal joint 20, Gear box 21, servo motor two 22, limit seat 23, eccentric positioning mechanism 24, disk one 25, annular boss one 26, fixed plate 27, hollow support 28, the second universal joint 30.

The upper part of the chassis 1 is provided with a frame 2, the upper part of the frame 2 is provided with a console 4, the left side of the frame 2 is fixed, and a guide rail 5 and a lead screw 6 are arranged in parallel, and a through hole for passing through the pipe fitting 3 is provided in the frame 2. The left end of the guide rail 5 and the lead screw 6 is fixed with a support 8, and the feeding clamp 7 is slidably fitted on the guide rail 5 and threaded on the lead screw 6. The lead screw 6 drives the feed clamp 7 to slide on the guide rail 5, and the feed clamp 7 7. The lower part is provided with a clamping hand 71 for clamping the pipe fitting 3, and the clamping hand 71 is controlled by high-pressure gas to clamp or loosen; the left end of the support 8 is fixed with a clamping mechanism 9 for clamping the pipe fitting. The clamping mechanism 9 The clamping and loosening are controlled by high-pressure gas; the bottom of the clamping mechanism 9 is fixedly connected with the square hollow bracket 28, and the upper left side of the clamping mechanism 9 is fixed with a cylinder 12, and the retaining bar 13 is connected with the lower end of the piston of the cylinder 12. The cylinder 12 works with high-pressure gas and drives the bar 13 to move up and down. The bar 13 is used to align the left ends of a plurality of pipes before the pipes are bent; , and a pair of pipe bending shafts 10 are arranged in parallel at the back, and the pipe bending wheels 11 rotate around the respective pipe bending shafts 10 respectively. The outer surface of the pipe bending wheels 11 is provided with a plurality of arc-shaped grooves matched with the pipe fittings.

As shown in Fig. 6 and Fig. 8, the upper side of the hollow support 28 is located on the right side of the bent pipe shaft 10 and is fixedly provided with a limit seat 23, and the left end of the limit seat 23 is aligned with the front and back and each is provided with a semicircular positioning groove 231 for To limit the pair of bending shafts 10 , a pair of positioning rods 232 for limiting the position of the pipe fitting 3 are also provided on the limit seat 23 .

The hollow bracket 28 is provided with an annular boss 2 281, the supporting plate 14 is arranged in the annular boss 2 281, and the supporting plate 14 is provided with a limiting hole 141 for limiting the position of the elbow shaft 10; The outer side of the annular boss 281 is rotatably fitted with a hollow turntable 15, and the turntable 15 is fixedly connected with the big gear 16 below it through the bracket 151; On the outside of the annular boss one 26 on the square fixed plate 27, one end of the square fixed plate 27 is fixedly connected with the servo motor one 18, and the servo motor one 18 is fixedly connected with the said chassis 1; Hole, and coincide with the center line of the circular hole of the through hole of annular boss one 26 and bull gear 16.

The bent pipe shaft 10 is fixed on the disc one 25, the central connection seat at the bottom of the disc one 25 is connected to the top of the transmission shaft 19 through the first universal joint 20, and the bottom of the transmission shaft 19 is connected to the top of the transmission shaft 19 through the second universal joint. Section 30 links to each other with the gearbox 21 that is arranged on the chassis 1 below, and this gearbox 21 is connected with the servomotor 2 22 that is arranged on the chassis 1; One side of the side is also provided with an eccentric positioning mechanism 24, as shown in Figure 7, this eccentric positioning mechanism 24 is made up of cylinder or hydraulic cylinder 240, piston rod 242 and guide wheel 241, guide wheel 241 and the side rolling cooperation of disc-25 , under the action of the hydraulic cylinder or air cylinder 240 and the guide wheel 241, the disc-25 is limited, so that the elbow shaft 10 fits in the positioning groove 231 during the eccentric rotation of the disc-25.

The hollow bracket 28, the eccentric positioning mechanism 24 and the disk one 25 are all arranged inside the bracket 151 between the turntable 15 and the bull gear 16, and the transmission shaft 19 passes through the circular hole at the center of the bull gear 16 , the through hole of the fixed plate 27 and the annular boss-26.

The large gear 16 meshes with the pinion 17, and the pinion 17 is in transmission connection with the output shaft 181 of the servo motor one 18 through a gearbox.

The working process of the pipe bending machine includes: first stacking a plurality of pipe fittings 3 and then passing through the through hole of the frame 2, the gap between the clamping hands 71, the gap between the clamping mechanism 9, the gap between the positioning rods 232, the bending tube The arc-shaped groove between the wheels 11 is placed on the turntable 15, the control bar 13 is lowered through the console 4, the pipe fitting 3 is manually moved to align the left end, the bar 13 is returned, and the motor is driven by the console 4. The lever 6 rotates to make the feeding clamp 7 move to a suitable position along the guide rail 5, and the pipe fitting 3 is clamped by the clamp hand 71 to move to the left for feeding. When the feeding clamp 7 moves to a suitable position, the clamping mechanism 9 clamps the The pipe fitting 3; the servo motor 2 22 works, and the disc 1 25 is driven to rotate through the first universal joint 20, the transmission shaft 19, and the second universal joint 30; the disc 1 25 drives the bending shaft 10 and the bending wheel 11 to rotate, Due to the limiting effect of the positioning groove 231 on the bending shaft 10 and the limiting effect of the eccentric positioning mechanism 24 on the disc one 25, the disc one 25 will surround the first bend in the pair of bending shafts 10. The pipe shaft rotates eccentrically and the first pipe bender fits in an adjacent positioning groove 231. At this time, the second pipe bender and the pipe bender 11 on it will surround the pipe bender 11 on the first pipe bender rotation; the left end part of the pipe fitting 3 is bent under the action of the bending wheel 11; during the bending process, the servo motor 18 works synchronously to drive the small gear 17 to rotate and the large gear 16 to rotate, The rotary table 15 is rotated by a corresponding angle along the bending direction of the pipe fitting 3, and the left end of the pipe fitting 3 is driven to move in the bending direction so that the bending process is successfully completed.

Apparently, the above-mentioned embodiments are only examples for clearly illustrating the utility model, rather than limiting the implementation manner of the utility model. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. And these obvious changes or variations derived from the spirit of the present utility model are still within the protection scope of the present utility model.

Claims (6)

1. bending machine, comprise frame (2), it is characterized in that: frame (2) is provided with the pusher for delivery of pipe fitting, and the left side of pusher is provided with a pair of bend pipe axle (10), and on each bend pipe axle (10), being respectively equipped with can be around the bend pipe wheel (11) of its rotation;

The right side of described bend pipe axle (10) is fixed with limit base (23); Before and after the left side of this limit base (23), be provided with two semicircular locating slots (231), for to described a pair of bend pipe axle (10), carrying out spacing respectively;

The below of described bend pipe axle (10) is provided with a disk one (25) that is suitable for eccentric rotary;

During described disk one (25) eccentric rotary, take a bend pipe axle (10) as axle center, so that a bend pipe wheel (11) is taken turns (11) rotation around another bend pipe, and bending is in the pipe fitting between described a pair of bend pipe wheel (11);

Described bend pipe wheel (11) below also is provided with panoramic table (15); When described disk one (25) eccentric rotary certain angle, panoramic table (15) is suitable for the central rotation respective angles around this panoramic table (15).

2. bending machine according to claim 1, it is characterized in that: described pusher comprises: feed clamp (7), the guide rail (5) and the leading screw (6) that be arranged in parallel, guide rail (5) is fixed with bearing (8) with the left end of leading screw (6), described feed clamp (7) is snug fit at guide rail (5) above and controls it by leading screw (6) and moves left and right, and feed clamp (7) bottom is provided with the tong (71) be used to clamping pipe fitting (3).

3. bending machine according to claim 2, it is characterized in that: the left end of described bearing (8) is fixed with the clamp mechanism (9) be used to clamping pipe fitting, described a pair of bend pipe axle (10) is located at the left side of this clamp mechanism (9), and the outer peripheral face of each bend pipe wheel (11) is provided with a plurality of arc grooves that are complementary with the pipe fitting diameter;

This is fixed on disk one (25) bend pipe axle (10), the Connection Block of the bottom center of disk one (25) is connected with the top of power transmission shaft (19) by the first universal joint (20), bottom second universal joint (30) of this power transmission shaft (19) is in transmission connection with a gearbox (21), and this gearbox (21) is in transmission connection with a servomotor two (22).

4. bending machine according to claim 3, it is characterized in that: described clamp mechanism (9) left side top is fixed with cylinder (12), the piston lower end of this cylinder (12) be provided with for before the pipe fitting bending to the blend stop (13) of the end part aligning of a plurality of pipe fittings.

5. bending machine according to claim 3 is characterized in that: it is upper that described clamp mechanism (9) lower end is fixed at hollow stent (28), and described limit base (23) is fixed on this hollow stent (28).

6. bending machine according to claim 5, it is characterized in that: a side of described disk one (25) is provided with eccentric detent mechanism (24), and this bias detent mechanism (24) comprising: hydraulic cylinder or cylinder (240) and be located at this hydraulic cylinder or the guide wheel (241) of the piston rod of cylinder (240) (242) end; Described disk one (25) is in the eccentric rotary process, hydraulic cylinder or cylinder (240) make guide wheel (241) be pressed on the side of described disk one (25) and roll and coordinate each other, and then disk one (25) is carried out spacing, a described bend pipe axle (10) is matched with in a corresponding locating slot (231).

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