CN203209579U - Pneumatic hoop bending device of steel bar bending machine - Google Patents

Abstract

The utility model provides a pneumatic hoop bending device of a steel bar bending machine. The pneumatic hoop bending device comprises a clamping device, multiple hoop bending devices and a cam device, wherein the multiple hoop bending devices are transversely arranged in an array, the rear end of a lever of the clamping device is in pin joint with a clamping cylinder, the middle part of the lever is in pin joint with a clamping rack, and a base of the clamping cylinder is in pin joint with the clamping rack; multiple cams of the cam device are fixed on a cam transmission shaft, and when each cam rotates by a circle, a lever air valve is opened for one time, and the air cylinder controlled by the lever air valve expands and contracts for one time; chain wheels are fixed in the middle sections of hollow rotating shafts of the hoop bending devices, oscillating bars are fixed at the front ends of the rotating shafts, one ends of the oscillating bars are connected with bending wheels through pin rolls, and telescopic shafts enter into and exit out of waist-round holes in the oscillating bars and can slide in the cavities of the rotating shafts; bending chains are used for pulling the chain wheels to rotate, the bending wheels on the oscillating bars are used for downwards bending steel bars, and after bending is completed, resetting chains are used for pulling back the bending wheels to be vertical. The pneumatic hoop bending device has the beneficial effects of simple structure, small size, high product accuracy and high yield.

Description

The pneumatic bending hoop device of stirrup bender

Technical field

The present invention relates to the steel bar processing machinery field of building trade, be specifically related to a kind of pneumatic bending hoop device of stirrup bender.

Background technology

Stirrup bender is that stirrup for building is curved the shape that needs, and has generally comprised feeding clip mechanism, hoop bending body, automatic controls.

Stirrup bender in the market mainly divides two kinds, and a kind of is that numerical control is full automatic, and another kind is the manual machinery formula.The full-automatic hoop bender of numerical control is easy to operate, but volume is big, and is expensive, generally only is applicable to heavy construction enterprise.Though and the hoop bender low price of manual machinery formula is operated too complexity of debugging, inefficiency, precision is low, and homogeneity of product is poor, and noise is very big.

Our company furthers investigate two kinds of mainstream models on the market, feel prior art straightening mechanism, feed mechanism, to cut off mechanism fairly simple and ripe, the structure of each producer is similar, but that crucial hoop bending body lacks is simple and reliable, low cost of manufacture, type that production efficiency is high, Given this, the applicant has researched and developed the pneumatic bending hoop device of stirrup bender according to the practical experience of oneself, and this case produces thus.

Summary of the invention

The objective of the invention is to overcome the defective of above-mentioned prior art, a kind of pneumatic bending hoop device of stirrup bender is provided.

To achieve these goals, technical scheme of the present invention is as follows:

A kind of pneumatic bending hoop device of stirrup bender is characterized in that comprising: be fixedly mounted on the clamping device on the frame, bending hoop device, cam gear; A plurality of bending hoop device lateral arranged in arrays;

Described clamping device comprises: clamp frame, clamp cylinder, piston rod, lever, upper grip, lower chuck; Lower chuck is fixedly mounted on and clamps on the frame, upper grip is fixed on the front end of shouldering bar, be provided with the circular arc cutaway adaptive with the reinforcing bar external diameter on the correspondence position of upper and lower chuck, be used for gripping reinforcing bar, the rear end bearing pin of shouldering bar is connected the piston rod top that clamps cylinder, the middle part bearing pin of shouldering bar is connected and clamps on the frame, and the base bearing pin that clamps cylinder is connected and clamps on the frame, clamps frame and is fixed on the frame;

Described cam gear comprises: cam, cylinder bar air valve, escape pipe, reducing motor, clutch, cam drive axle; The multi-disc cam is fixed on the cam drive axle, has fixed a cylinder bar air valve on the correspondence position of every cam, and the escape pipe of cylinder bar air valve is connecting one group of cylinder respectively; Each cam rotates a circle, and opens cylinder bar air valve once, by this open 1 of cylinder bar Air Valve Control or several cylinders just flexible once;

Described bending hoop device comprises: bending sleeve pipe, fork, bending wheel, telescopic shaft, bending chain, the chain that resets, extension spring, telescopic cylinder, bending cylinder, sprocket wheel, stroke adjustment cover;

Hollow bending sleeve pipe is connected on the frame by front and back bearings, sprocket wheel has been fixed in the stage casing of bending sleeve pipe, bending sleeve pipe front end has been fixed fork, fork one end bearing pin has connected the bending wheel, one oval hole is arranged on the fork, hold telescopic shaft and pass in and out therein, have the enough big spaces that hold that reinforcing bar passes between bending wheel and the telescopic shaft front end;

Telescopic shaft and hollow bending sleeve pipe coaxial line are installed, and the telescopic shaft rear end has connected telescopic cylinder, can slide in the cavity of bending sleeve pipe;

The bending chain is round being engaged on more than half sprocket wheel, and an end of bending chain is fixed on the tooth of sprocket wheel, and the other end bearing pin that the bending chain dangles is connected stroke adjustment and puts, and the stroke adjustment external threading is connected on the piston rod of bending cylinder; Bending sleeve pipe rear end has also centered on the half-turn chain that resets, and an end of the chain that resets is fixed on the back end circumference of bending sleeve pipe, and the chain other end that resets has been fixed extension spring, and an end of extension spring is fixed on the frame.

The invention has the beneficial effects as follows: volume simple in structure is little, the automaticity height, and product precision height, the output height, noise is little, when reducing manufacturing cost, has widened the range of application of many specifications, multi-assortment production.Be a kind of cheap and good-quality middle-grade product,, be specially adapted to middle-grade scale, mobile big or backwoodsman building industry use.

Description of drawings

Fig. 1 is general assembly schematic diagram of the present invention;

Fig. 2 is the clamping device schematic diagram;

Fig. 3 is the cam gear schematic diagram;

Fig. 4 is bending hoop device installation diagram;

Fig. 5 is bending hoop device front view;

Fig. 6 is that Fig. 5 is along the cutaway view of D-D line;

Fig. 7 is the equipment state figure of bending hoop finished product after finishing.

Reference numeral:

1 clamping device,

11 clamp frame, 12 clamps cylinder, 121 piston rods, 13 levers, 14 upper grips, 15 lower chucks;

2 bending hoop devices (from left to right, sequence number is respectively 2A, 2B, 2C, 2D, 2E)

21 bending sleeve pipes, 211 forks, 212 bendings wheel, 22 telescopic shafts, 23 bending chains, 24 reset chain, 25 extension springs, 26 telescopic cylinders, 27 bending cylinders, 28 sprocket wheels, 29 stroke adjustment covers;

3 cam gears

31 cams, 32 cylinder bar air valves, 321 tracheaes, 33 reducing motors, 34 clutches, 35 cam drive axles;

4 frames; 5 reinforcing bars.

The specific embodiment

Come the present invention is further elaborated below by embodiment and accompanying drawing.

Embodiment 1

The structure of pneumatic type stirrup bender such as Fig. 1-shown in Figure 6, mainly comprise clamping device 1, cam gear 3, bending hoop device 2.

Referring to accompanying drawing 2, clamping device 2 comprises: clamp frame 11, clamp cylinder 12, piston rod 121, lever 13, upper grip 14, lower chuck 15; Lower chuck 15 is fixedly mounted on and clamps on the frame 11, upper grip 14 is fixed on the front end of shouldering bar 13, be provided with the circular arc cutaway that grips reinforcing bar on the correspondence position of upper and lower chuck, the rear end bearing pin of shouldering bar 13 is connected piston rod 121 tops that clamp cylinder 12, the middle part bearing pin of shouldering bar 13 is connected and clamps on the frame 11, and shouldering bar 13 can be around the bearing pin swing; The base bearing pin that clamps cylinder 12 is connected and clamps on the frame 11, when lever 13 is swung, clamps cylinder 12 and also can swing, and makes the piston rod that clamps cylinder 12 when flexible, adjusts the application of force angle to lever 13 automatically, makes the clamping action more smooth and easy reliable; Clamping frame 11 is fixed on the frame 4; When piston rod 121 down during contracting, to lift up on the front end of lever 13, upper grip 14 leaves lower chuck 15, allows reinforcing bar to enter circular arc cutaway; When piston rod 121 protruded upward, the front end of lever 13 pressed down, and upper and lower chuck 14 and 15 is just tightly clamped the reinforcing bar 5 that is arranged in circular arc cutaway, was convenient to the smooth work of bending hoop device.

Referring to Fig. 3, cam gear 3 comprises: cam 31, cylinder bar air valve 32, escape pipe 321, reducing motor 33, clutch 34, cam drive axle 35; Multi-disc cam 31 is fixed on the cam drive axle 35, has fixed a cylinder bar air valve 32 on the correspondence position of every cam 31, and the escape pipe 321 of cylinder bar air valve 32 is connecting one or several cylinder respectively; Each cam 31 rotates a circle, and opens cylinder bar air valve 32 once, is just stretched once by this cylinder that opens 32 controls of cylinder bar air valve.Cam gear 3 is controlling organizations of bending hoop device 2, because the difference of cam 31 control cylinders and cam 31 contour shapes is different, each cylinder piston rod can keep constant compression force in and time of setting flexible in the different time by setting technological requirement.

Referring to Fig. 4-6, bending hoop device 2 comprises: bending sleeve pipe 21, fork 211, bending wheel 212, telescopic shaft 22, bending chain 23, the chain 24 that resets, extension spring 25, telescopic cylinder 26, bending cylinder 27, sprocket wheel 28, stroke adjustment cover 29;

Hollow bending sleeve pipe 21 is connected on the frame 4 by front and back bearings, the center fixed of bending sleeve pipe 2 sprocket wheel 28, bending sleeve pipe 26 front ends have been fixed fork 211, fork 211 1 end bearing pins have connected bending wheel 212, one oval hole is arranged on the fork 211, hold telescopic shaft 22 and pass in and out therein, have the enough big spaces that hold that reinforcing bar 5 passes between bending wheel 212 and telescopic shaft 22 front ends;

Telescopic shaft 22 and hollow bending sleeve pipe 21 coaxial lines are installed, and telescopic shaft 22 has connected telescopic cylinder 26, can slide in the cavity of bending sleeve pipe 21;

Bending chain 23 is round being engaged on more than half sprocket wheel 28, one end of bending chain 23 is fixed on the tooth of sprocket wheel 28, the other end bearing pin that bending chain 23 dangles is connected on the stroke adjustment cover 29, and stroke adjustment cover 29 is threaded on the piston rod of bending cylinder 27; Bending sleeve pipe 21 rear ends have also centered on the half-turn chain 24 that resets, and an end of the chain 24 that resets is fixed on the back end circumference of bending sleeve pipe 21, and chain 24 other ends that reset have been fixed extension spring 25, and the other end of extension spring 25 is fixed on the frame 4; When the piston rod contracting backward of bending cylinder 27, piston rod is by stroke adjustment cover 29, bending chain 23, sprocket wheel 28 makes 21 rotations of bending sleeve pipe, the bending sleeve pipe 21 of rotation makes vertical fork 211 turn over certain angle, bending chain 23 will guarantee that around length sprocket wheel 28 can the above corner of Rotate 180 degree on sprocket wheel 28, adjust stroke adjustment and overlap 29 the screw threads degree of depth that is screwed into and the stroke of regulating bending cylinder 27 piston rods, can control reinforcing bar 5 angle bending, under the limiting case, when fork rotation 270 is spent, reinforcing bar is spent by bending 180, and generally bending angle commonly used is 90 degree and 135 degree; The rotation of bending sleeve pipe 21 and fork 211, make the bending wheel 212 of pin joint on fork 211 reinforcing bar 5 past pressing down, under the cooperation of telescopic shaft 22, implement bending, in the bending process, the rotation of bending sleeve pipe 21 has been elongated the extension spring 25 that is connected chain 24 rear ends that reset resetting chain 24 more on axle; After finishing the bending operation, the piston rod of bending cylinder 27 up resets immediately, and under the effect of extension spring 25,21 reverse rotations of bending sleeve pipe make fork 211 be returned to vertical position, is in the preceding armed state of next bending circulation; The telescopic shaft 22 of the piston rod of telescopic cylinder 26 pulling is simultaneously drawn back, and makes in the oval hole of its indentation fork 211, allows other bending hoop device 2 devote oneself to work or allows finished product fall.

Below we launch to describe by the reinforcing steel bar hoop bending process, be convenient to those skilled in the art and sharpen understanding:

Referring to accompanying drawing 1, we are according to the length of side of reinforcing steel bar hoop bending, and five bending hoop devices 2 parallel array on frame 4, we are its called after 2A, 2B, 2C, 2D, 2E, between them lateral separation determined the length of side of reinforcing steel bar hoop bending.Reinforcing bar 5 laterally is shelved on the telescopic shaft of five bending hoop devices 2, and the upper and lower chuck 14 and 15 of (in order to save map sheet, the reinforcing bar two ends among Fig. 1 are by bending) and clamped device 1 grips to be fixed.

The first step: bending hoop device 2A and 2E be bending hoop simultaneously, reinforcing bar 5 is bent into a font, as shown in Figure 1;

Second step: after the telescopic shaft 22 of bending hoop device 2E was fully retracted, bending hoop device 2D carried out bending hoop at once;

The 3rd step: after the telescopic shaft 22 of bending hoop device 2A and 2D was fully retracted, bending hoop device 2B, 2C carried out bending hoop at once; The finished product that bending hoop is finished as shown in Figure 7.

The 4th step: pneumatic gripping loosens, expansion link 22 indentations simultaneously of bending hoop device 2B, 2C, and the stirrup finished product falls.

Of the present invention simple in structure, reliable operation, the shape control of reinforcing steel bar hoop bending is flexible, easy to operate efficient height, according to test, per minute can be processed 20 reinforcing steel bar hoop bendings, and quality meets the drawing requirement fully.

Claims (1)

1. the pneumatic bending hoop device of a stirrup bender is characterized in that comprising: be fixedly mounted on the clamping device on the frame, bending hoop device, cam gear; A plurality of bending hoop device lateral arranged in arrays;

Described clamping device comprises: clamp frame, clamp cylinder, piston rod, lever, upper grip, lower chuck; Lower chuck is fixedly mounted on and clamps on the frame, upper grip is fixed on the front end of shouldering bar, be provided with the circular arc cutaway adaptive with the reinforcing bar external diameter on the correspondence position of upper and lower chuck, the rear end bearing pin of shouldering bar is connected the piston rod top that clamps cylinder, the middle part bearing pin of shouldering bar is connected and clamps on the frame, the base bearing pin that clamps cylinder is connected and clamps on the frame, clamps frame and is fixed on the frame;

Described cam gear comprises: cam, cylinder bar air valve, escape pipe, reducing motor, clutch, cam drive axle; The multi-disc cam is fixed on the cam drive axle, has fixed a cylinder bar air valve on the correspondence position of every cam, and the escape pipe of each cylinder bar air valve is connecting one group of cylinder respectively; Each cam rotates a circle, and opens cylinder bar air valve once, by this open one of cylinder bar Air Valve Control or several cylinders just flexible once;

Described bending hoop device comprises: bending sleeve pipe, fork, bending wheel, telescopic shaft, bending chain, the chain that resets, extension spring, telescopic cylinder, bending cylinder, sprocket wheel, stroke adjustment cover;

Hollow bending sleeve pipe is connected on the frame by front and back bearings, sprocket wheel has been fixed in the stage casing of bending sleeve pipe, bending sleeve pipe front end has been fixed fork, fork one end bearing pin has connected the bending wheel, one oval hole is arranged on the fork, hold telescopic shaft and pass in and out therein, have the enough big spaces that hold that reinforcing bar passes between bending wheel and the telescopic shaft front end;

Telescopic shaft and hollow bending sleeve pipe coaxial line are installed, and the telescopic shaft rear end has connected telescopic cylinder, can slide in the cavity of bending sleeve pipe;

The bending chain is round being engaged on more than half sprocket wheel, and an end of bending chain is fixed on the tooth of sprocket wheel, and the other end bearing pin that the bending chain dangles is connected stroke adjustment and puts, and the stroke adjustment external threading is connected on the piston rod of bending cylinder; Bending sleeve pipe rear end has also centered on the half-turn chain that resets, and an end of the chain that resets is fixed on the back end circumference of bending sleeve pipe, and the chain other end that resets has been fixed extension spring, and an end of extension spring is fixed on the frame.

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