CN1060984A

CN1060984A - Stirrup forming method and forming machine thereof

Info

Publication number: CN1060984A
Application number: CN 90108815
Authority: CN
Inventors: 黄永涛
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-10-30
Filing date: 1990-10-30
Publication date: 1992-05-13
Anticipated expiration: 2005-10-30
Also published as: CN1022172C

Abstract

Stirrup forming method and forming machine thereof are used for building trade.Stirrup is the relative position that is used for fixing main reinforcement in the reinforced concrete skeleton frame member, and its requirement is big.The present invention replaces manual production in the machining mode.The forming method of hooping forming machine is on core rod reinforcing bar to be curved spiral helicine circular, hoop, keeps the two ends crotch of hoop not open, and making it distortion by the spiral pushing force becomes the polygon stirrup.This machine can produce diversified stirrup, and can keep its shape consistent with structured size, and product is convenient to stack and transportation.This machine can be made spiral hoop, can make individual pen closing ring or individual pen open stirrups again.

Description

Stirrup forming method and forming machine thereof

The present invention relates in the building trade manufacture method of stirrup and equipment thereof on the cage of reinforcement member.The manufacturing that method of addressing as this patent and equipment thereof also are applicable to metalloid spare in other industry.

In the frame member of steel concrete, have a large amount of and be diversified stirrup (also have cry stirrup, stirrup), fix the relative position of main reinforcement in above-mentioned member with it, Figure 1 shows that the stirrup shape that some are commonly used, comprise closing ring and open stirrups.These stirrups all bend with manual at present, and can only make the individual pen hoop.

The closing ring that a kind of multi-turn is continuous, both so-called spiral hoop, as shown in Figure 2, its appearance will produce dramatic change in design of building structures and building operations.Derive according to theory, replace the individual pen hoop with spiral hoop, in same member, not only material saving, saving working hour, and under uniform section, equally spaced situation, can also improve the supporting capacity of beam or post.Do not make the equipment of spiral hoop, just can't in building trade, apply.

The objective of the invention is to replace manual production, can make spiral hoop, can make individual pen closing ring and individual pen open stirrups again with the mechanization mode of production.

Basic principle of the present invention is reinforcing bar to be curved spiral helicine circular, hoop on core rod, its number of turns can greater than, be equal to or less than a circle, keep the two ends crotch of hoop not open, by spiral thrust or extruding force, make its distortion become the polygon stirrup.

Its concrete grammar is: with reinforcing bar (line style raw material) end bending and be advanced in the cylindrical stopper slot of core rod, the core rod rotation, reinforcing bar is wound onto on the cylinder, the restriction and the guiding function of the helical groove of (be enclosed within the core rod outside and maintain static) because pushing circle force reinforcing bar constantly by aligning (along hand of helix) and keep reeling not overlapping.When helically wound circular, hoop is pushed to core rod changeover portion (can be considered a kind of type tire that rises), because cone stops, force and respectively enclose the stirrup dense arrangement, and core rod continues rotation, the helical groove of pushing circle produces huge spiral thrust or extruding force to the stirrup of dense arrangement, forces circular, hoop little by little to be out of shape to the polygon hoop.When stirrup was pulled to the polygonal body of core rod, it had been pulled into shape and size into needed polygon stirrup by rising.Because the stirrup head and end all has dogleg section (crotch), and each stopper slot runs through total length on the core rod, so can guarantee stirrup in forming process, the crotch at two ends can not be straightened or spreading.

Advantage of the present invention is conspicuous, and the stirrup that it will use has in a large number been realized mechanization production, has improved production efficiency; Alleviated direct labor's labour intensity, reduced working area, and the stirrup shape that it processes can keep regular consistent with size, be convenient to stack and transportation; Main is it for the manufacturing of spiral hoop and apply possibility is provided, realize full mechanization production for the cage of reinforcement member and lay the foundation.

The equipment that adopts above-mentioned principle to make stirrup is the stirrup forming machine, and it is made up of major parts such as core rod, pushing circle, press-bending hook mechanism, shearing device and travel mechanism, spindle turning device, revolution location and electric control gear, frames.

Describe the structure and the function of its process and main part in detail below with reference to accompanying drawing.

Fig. 3 is the schematic perspective view of stirrup forming machine process

Fig. 4 is the bottom view of Fig. 3

Fig. 5 is the core rod elevation

Fig. 6 is a B-B sectional view among Fig. 4

Fig. 7 and Fig. 8 are pushing circle sectional views

With reference to Fig. 4, Fig. 5, Fig. 6, A place, fixed length position is delivered in reinforcing bar 12 ends, by press-bending hook mechanism 1 with its bending and be advanced to 3 li of the stopper slots of core rod 2, by flexible block 11 it is pinned, at core rod during by main shaft driven rotary (direction is left-handed according to stirrup or dextrorotation is decided), reinforcing bar is wound onto on the cylinder 6 of core rod, is fixed on the rack table at pushing circle 4() the restriction and guiding of helical groove under, it is little by little aligned and is curved spiral helicine circular, hoop.According to the stirrup number of turns and shape (single-turn or multi-turn, individual pen sealing or individual pen opening) requirement, corresponding bending point 9 stops operating at press-bending hook mechanism place on the core rod, reinforcing bar is cut off by shearing device 5,, pin with its bending (opposite) and be advanced to the stopper slot 3 ' lining of core rod by the press-bending hook mechanism by another flexible block with the head end wrap direction.Core rod forwards next bending point to be stopped, and carries out next stirrup processing, repeats above-mentioned course of action.

Core rod continues rotation, and the front has formed the spiral thrust effect that spiral helicine circular, hoop constantly is subjected to pushing circle, forces them by core rod changeover portion 7 time, little by little to the distortion of polygon hoop, sees shown in Figure 3 by circular, hoop.When they arrive core rod polygonal body 8, all become needed (shape and size) polygon stirrup.

The profile of above-mentioned core rod 2 is made up of three parts, and front end is a cylinder 5, and end is a polygonal body 8, and the centre is a changeover portion 7.Core rod can be a monolithic, also can be sectionally assembled.

Core rod each several part shape and size are to consider like this: the limit number of polygonal body (being depicted as the quadrangle body on the figure) and the length of side are same with stirrup shape and inner edge appearance to be processed, the girth of polygonal body is a bit larger tham cylindrical circumference, the intersection, two limits of polygonal body is called the bending point, it is made of one section circular arc, this arc radius is a bit larger tham or equals main reinforcement diameter half on the cage of reinforcement member, in the both sides of each bending point or a side all have stopper slot 3 and/or 3 ', bending point circular arc and stopper slot all extend to the whole length of core rod, on the cylinder outer face between two bending points camber line length should equal or be slightly smaller than the length of side on the corresponding limit of polygonal body.

Each stopper slot one side all has shoulder 10 on the cylinder outer end of core rod, and a flexible block 11 is all arranged on each shoulder, sees Fig. 4, shown in Figure 6.By above-mentioned block, crotch is lockable when bending for reinforcing bar head end or terminal hook, prevents the crotch bounce-back or unclamps, and guarantees that crotch can enter in the stopper slot when stirrup moves smoothly.

Fig. 7 and pushing circle shown in Figure 8, an all similar annulus all has a spiral groove 13 on its inwall, and hand of helix requires to decide according to stirrup, and its groove section can be semicircle, trapezoidal, triangle, zigzag or rectangle.Each encloses depth of groove and should equate that the space that each groove cross section and core rod maximum outside diameter are constituted should be equal to or slightly greater than bar diameter.

Pushing circle lower end is jagged, for the usefulness of charging, press-bending hook and cut-out, sees shown in Figure 4.

Fig. 8 is the pushing circle that another kind may adopt, its height is suitable with the height of core rod cylindrical section and changeover portion, corresponding to the core rod changeover portion, the cross section is conical in the pushing circle, and the helical groove diameter is that variation with the relative maximum outside diameter of core rod changeover portion changes on its inwall; Corresponding to the core rod cylindrical section, the cross section still is cylindrical in the pushing circle, the spiral groove that has same diameter on its inwall.

Shearing device is made of dead knife and movable blade, and they all are installed in can be along in the travel mechanism that rack table moves radially.

The press-bending hook mechanism mainly contain one can forward and reverse rotation briquetting, during action on the cylinder of its centre of gyration and core rod bending point circular arc center coincide, this mechanism also all is placed in the above-mentioned travel mechanism.

When processing different size stirrup, need to change core rod and/or pushing circle, the position of bend simultaneously hook mechanism and shearing device should be adjusted accordingly by travel mechanism.

That finishes press-bending hook, cut-out and feeding action can adopt manual mode, also can adopt maneuver mode.

The revolution location of main shaft is to provide signal by the sender spare that is contained on the core rod, and the receiving element that is installed in the travel mechanism receives, and the control of preselector in electric control gear is to realize the requirement that stops or rotating to main shaft.

Claims

1, a kind of stirrups forming method, it is characterized in that on core rod reinforcing bar curved spiral helicine circular, hoop (its number of turns can greater than, be equal to or less than a circle), keep the two ends crotch of hoop not open,, make its distortion become the polygon stirrup by the pushing of spiral thrust.

2, a kind of stirrup forming machine is characterized in that having one and maintains static helical groove on the inwall and can make reinforcing bar curve the spiral helicine pushing circle of circle and one to be placed in the pushing circle by main shaft driven rotary reinforcing bar and to reel on it and the core rod that makes it to be shaped.

3, stirrup forming machine as claimed in claim 2, an end that it is characterized in that core rod is a cylinder, and the other end is a polygonal body, is changeover portion between the two, and core rod can be whole, also can be the multistage combination.

4, core rod as claimed in claim 3 is characterized in that having on the core rod shoulder of making crotch and flexible block and the stopper slot that keeps crotch-shaped.

5, stirrup forming machine as claimed in claim 2, the section configuration that it is characterized in that pushing helical groove on the circle inwall can be semicircle, trapezoidal, triangle, zigzag or rectangle.

6, pushing circle as claimed in claim 5, it is characterized in that being circular, it highly is equivalent to the height of core rod cylindrical section, also can be suitable with the height of core rod cylindrical section, changeover portion, its inwall is corresponding to be formed by two sections, be cylindrical section and conical section, the maximum outside diameter in the internal diameter of each section helical groove and each cross section of core rod correspondent section adapts.

7, stirrup forming machine as claimed in claim 2 is characterized in that in the reinforcing bar import department of pushing circle press-bending hook mechanism and shearing device being arranged.

8, press-bending hook mechanism as claimed in claim 7 and shearing device is characterized in that they can move radially along table top simultaneously, finish the press-bending hook and cut off action, and its action can be adopted manually, also can adopt motor-driven.