CN203508866U

CN203508866U - Bending mechanism of hoop bending machine

Info

Publication number: CN203508866U
Application number: CN201320652119.8U
Authority: CN
Inventors: 卢华林
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-10-22
Filing date: 2013-10-22
Publication date: 2014-04-02
Anticipated expiration: 2023-10-22

Abstract

The utility model discloses a bending mechanism of a hoop bending machine. The bending mechanism of the hoop bending machine comprises a hollow pipe, a connecting block, a bending pin and a locating pin, wherein the connecting block is connected with one end of the hollow pipe, the bending pin is fixed on the connecting block, and the locating pin is sleeved by the hollow pipe. The bending mechanism of the hoop bending machine is characterized in that the locating pin and a return spring form an elastic locating pin, and the elastic locating pin is connected with a cam mechanism through a connecting rod. The bending mechanism of the hoop bending machine has the advantages that the locating pin is driven by cams, as for the hoop bending machine, locating pins of a plurality of bending mechanisms can be driven by a plurality of cams through one power transmission mechanism, thereby, an expensive air cylinder (or oil cylinder) can be omitted, the structure is simple, producing costs are low, the operation is stable and reliable, faults are few, the maintenance is easy, and the like.

Description

A kind of bending mechanism of hoop bender

Technical field

The utility model belongs to hoop bender, is specifically related to a kind of bending mechanism of hoop bender.

Background technology

Hoop bender is used in a large number in building reinforced concrete construction.The bending mechanism of existing hoop bender comprises hollow pipe, be connected to the contiguous block of hollow pipe one end, be fixed on pin bent on contiguous block, be enclosed within the alignment pin in hollow pipe.During bending mechanism work, alignment pin need to regularly be done stretching motion, in order to avoid stop the rotation of reinforcing bar when bending.The stretching motion of existing alignment pin is to rely on the cylinder (or oil cylinder) being attached thereto to drive to realize.Because a hoop bender has a plurality of bending mechanisms, each bending mechanism will arrange the cylinder (or oil cylinder) of a driving alignment pin, makes equipment manufacturing cost higher.

Utility model content

The purpose of this utility model is to provide a kind of bending mechanism of hoop bender simple in structure.

The technical scheme that realizes the employing of the utility model object is as follows:

The bending mechanism of the hoop bender that the utility model provides, comprise hollow pipe, be connected to hollow pipe one end contiguous block, be fixed on pin bent on contiguous block, be enclosed within the alignment pin in hollow pipe; Described alignment pin forms elastic positioning pin by return spring is set, and described elastic positioning pin is connected with cam mechanism by connecting rod.

Cam in described cam mechanism, is provided with protuberance in its side, and described elastic positioning pin matches with the protuberance of described cam by connecting rod.

Feature of the present utility model is, utilize cam to drive alignment pin, for a hoop bender, can adopt a power drive mechanism by the alignment pin of a plurality of bending mechanisms of a plurality of actuated by cams, saved so the more expensive cylinder (or oil cylinder) of price, have simple in structurely, production cost is low, stable and reliable operation, the advantages such as fault is few, easy-maintaining.

Below in conjunction with accompanying drawing, further illustrate the technical solution of the utility model.

Accompanying drawing explanation

Fig. 1 is the structural representation of hoop bender.

Fig. 2 be in Fig. 1 AA to view.

Fig. 3 is the top view of bending unit a in Fig. 1.

Fig. 4, Fig. 5 are the different operating view of bending unit a in Fig. 1.

Fig. 6, Fig. 7 are respectively the different operating view of hoop bender.

The specific embodiment

The structure of hoop bender is as shown in Fig. 1-Fig. 3, comprise body 1, be located at the some bending unit a on body 1, b, c, d, each bending unit a, b, c, d is equipped with bending mechanism, bending mechanism comprises hollow pipe 15, be connected to the contiguous block 8 of hollow pipe 15 one end, be fixed on the pin bent 802 on contiguous block 8, be enclosed within the alignment pin 801 in hollow pipe 15, hollow pipe 15 is arranged on bearing block 9 by bearing 12, bearing block 9 use bolts 11 are fixed on slide block 14, slide block 14 is coordinated and is movably fixed on body 1 with mounting hole 101 on body 1 by bolt 7, alignment pin 801 by be located at return spring 20 on slide block 14 and be connected and form elastic positioning pin, bending mechanism forms elastic bending mechanism by circumferential return spring is set on hollow pipe 15, due to each bending unit a, b, c, d is all movably fixed on body 1 and can be moved along body 1 by slide block 14, can regulate the distance between bending mechanism and bending mechanism, each bending mechanism drives by a power drive mechanism, power drive mechanism comprises power set motor 4, the bearing 3 that passes through being connected with motor 4 is arranged on the driving shaft 2 on body 1, be arranged on the cam mechanism being connected with each bending mechanism respectively on driving shaft 2, cam mechanism comprises the cam 5 being located on driving shaft 2, be located at the gear 16 on bending mechanism hollow pipe 15, the tooth bar 10 coordinating with cam 5 and gear 16, tooth bar 10 is spacing by the fixed block 19 being fixed on slide block 14, the setting angle of cam 5 in each cam mechanism on driving shaft 2 determined according to the rotation amplitude of bending mechanism, by slide block 14, be movably fixed on body 1 correspondingly with bending unit a, b, c, d, the cam 5 in cam mechanism also adopts manner to be fixed on driving shaft 2 by screw 503, cam 5 in cam mechanism, is provided with arc protuberance 501 in its side, and the alignment pin 801 in bending mechanism matches with the protuberance 501 of cam 5 by connecting rod 6, and connecting rod 6 is hinged on the support 18 being fixed on slide block 14 by hinge 17.

Operation principle:

Referring to Fig. 1, Fig. 2, reinforcing bar 13 enters into each bending unit a automatically, b, c, after bending mechanism in d, between the pin bent 802 and alignment pin 801 of bending mechanism, motor 4 drives the cam 5 in each cam mechanism to rotate by driving shaft 2, protuberance 502 on cam 5 and the arc protuberance 501 of side coordinate with tooth bar 10 and connecting rod 6 respectively, drive their actions, by tooth bar 10 and connecting rod 6, drive respectively hollow pipe 15 rotations and alignment pin 801 in bending mechanism flexible, when hollow pipe 15 rotates, pin bent 802 is by reinforcing bar 13 bending angles (referring to Fig. 4).Because the angle of installing on driving shaft 2 from each bending unit a, b, c, cam 5 that d is corresponding is different, bending mechanism bending reinforcing steel bar in each bending unit a, b, c, d is to carry out according to the order of sequence opportunity according to the rotation of bending mechanism, the bending mechanism of the first step in bending unit a, d bends, as shown in Figure 6; The bending mechanism of second step in bending unit b, c bends, as shown in Figure 7.After completing first step bending, in bending unit a, d, the alignment pin 801 of bending mechanism coordinates with the arc protuberance 501 of cam 5 in retraction hollow pipe 15 (referring to Fig. 5) by connecting rod 6, so that reinforcing bar 13 is not stopped when second step bends, after reinforcing bar 13 second step bendings, the alignment pin 801 of bending mechanism return (referring to Fig. 2) under the effect of return spring 20 in bending unit a, d.

Claims

1. a bending mechanism for hoop bender, comprise hollow pipe, be connected to hollow pipe one end contiguous block, be fixed on pin bent on contiguous block, be enclosed within the alignment pin in hollow pipe; It is characterized in that described alignment pin forms elastic positioning pin by return spring is set, described elastic positioning pin is connected with cam mechanism by connecting rod.

2. the bending mechanism of hoop bender according to claim 1, is characterized in that the cam in described cam mechanism, in its side, is provided with protuberance, and described elastic positioning pin matches with the protuberance of described cam by connecting rod.