CN216027715U

CN216027715U - Hoop bending machine

Info

Publication number: CN216027715U
Application number: CN202121938976.5U
Authority: CN
Inventors: 梁亮
Original assignee: Zhengzhou City Juneng Building Machinery Co ltd
Current assignee: Zhengzhou City Juneng Building Machinery Co ltd
Priority date: 2021-08-18
Filing date: 2021-08-18
Publication date: 2022-03-15
Anticipated expiration: 2031-08-18

Abstract

The utility model discloses a hoop bending machine which comprises a rack, wherein a traction mechanism, a guide mechanism, a bending mechanism, a shearing mechanism and a driving mechanism are arranged on the rack, and the traction mechanism comprises a pressing wheel set, a traction wheel set and a support which are arranged in parallel in a matched manner; the traction input shaft end where the driving traction wheel of the traction wheel set is located is connected with a synchronous belt transmission mechanism, and the compression wheel set is provided with a compression mechanism; the shearing mechanism comprises a crankshaft connected with the driving mechanism, an eccentric shaft arranged on the crankshaft, a limiting rod, a connecting rod, a shearing arm, a movable blade and a fixed blade; the shearing arm is movably hinged on the fixed shaft on the rack; one end of the connecting rod is connected with the eccentric shaft, and the other end of the connecting rod is movably hinged with one end of the shearing arm; the other end of the shearing arm is fixed with a movable blade which swings up and down along the end face of the workpiece punching hole on the rack; the utility model discloses a structure is exquisite, and the cooperation precision is high, stable performance, reliable, and production efficiency is high, has reduced later stage maintenance and the cost of use simultaneously.

Description

Hoop bending machine

Technical Field

The utility model relates to the technical field of building material processing equipment, in particular to a hoop bending machine.

Background

With the rapid development of modern engineering technology, reinforced bar products in various shapes have gradually permeated into various fields of society, such as road traffic operation, aerospace industry, ship manufacturing industry, bridges, building construction and other industries, especially in the bridge and building construction industry, the building structure of reinforced concrete is widely applied, and the steel bar is an indispensable building material with great demand; however, the shape of the steel bar product for the building is complex, especially long bending bars and stirrups with various shapes, the specification and dimension requirements are variable, the fixed length precision requirement is high, the raw material steel bars produced by a steel mill cannot be directly used in engineering, and the raw material steel bars need to be bent, shaped and processed manually or by using special equipment, so that the steel bar product meeting the design requirement of the composite building is produced; therefore, the processing efficiency and precision of the steel bar product influence the quality and construction efficiency of the building engineering to a great extent. The automation and the accuracy of the bending of the steel bar products are realized, and the method is a necessary direction for the development of the steel bar bending industry.

The hoop bending machine is the main equipment for bending the reinforcing steel bars, and the types of the hoop bending machine are many: the bending mode can be divided into four types, namely press bending, roll bending, push bending and bending; the transmission mode can be divided into manual transmission, pneumatic transmission, mechanical transmission and hydraulic transmission; the control mode can be divided into manual, semi-automatic, automatic and numerical control; with the continuous development of engineering technology, more reinforcing steel bar hoop bending machines of different types and applicable to different occasions are continuously developed, and the reinforcing steel bar hoop bending machines are diversified, perfect in function, high in machining precision and good in product quality.

The related hoop bending machine has the disadvantages of complicated structure, more points with easy failure, high failure rate, increased maintenance and use cost, poor continuity of the production process and low production efficiency. Therefore, the hoop bending machine which has a simple structure, stable and reliable performance, can reduce maintenance and use cost, realizes production continuity and improves production efficiency is researched and designed, and the hoop bending machine has very important significance.

Disclosure of Invention

The utility model aims to provide a hoop bending machine, and aims to solve the technical problems of complex overall structure, high failure rate, inconvenience in use and maintenance, poor continuity in the production process and low production efficiency of the conventional hoop bending machine.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the hoop bending machine comprises a rack, wherein a traction mechanism, a guide mechanism, a bending mechanism, a shearing mechanism and a driving mechanism are arranged on the rack, and the traction mechanism comprises a pressing wheel set, a traction wheel set and a support thereof which are arranged in parallel in a matched manner; the traction input shaft end where the driving traction wheel of the traction wheel set is located is connected with a synchronous belt transmission mechanism, and the compression wheel set is provided with a compression mechanism; the shearing mechanism comprises a crankshaft connected with the driving mechanism, an eccentric shaft arranged on the crankshaft, a limiting rod, a connecting rod, a shearing arm, a movable blade and a fixed blade; the shearing arm is movably hinged on the fixed shaft on the rack; one end of the connecting rod is connected with the eccentric shaft, and the other end of the connecting rod is movably hinged with one end of the shearing arm; and the other end of the shearing arm is fixedly provided with a movable blade, and the movable blade swings up and down along the end face of the workpiece punching hole on the rack.

Preferably, the pressing mechanism comprises a pressurizing arm and a hydraulic oil cylinder or an air cylinder; the pressure arm comprises a force application end movably hinged with the support of the pressing wheel set and an adjusting end movably hinged with the liquid/air cylinder.

Preferably, the force application end of the pressure arm is provided with a pressure head, and the pressure head penetrates through a support of the pressing wheel set and is connected with a rotating shaft of the pressing wheel.

Preferably, the distance between the adjustment ends of the pressure arms is greater than the distance between the force application ends.

Preferably, the telescopic direction of a piston rod of the hydraulic cylinder or the air cylinder is parallel to the movement direction of the workpiece.

Preferably, the limiting rod and the output shaft of the driving mechanism are provided with key grooves which are matched with each other, so that the limiting rod is fixed on the output shaft of the driving mechanism.

Preferably, the fixed blade is fixedly arranged at the lower part of the workpiece through hole end on the machine frame.

Preferably, the guide mechanism comprises a guide wheel set arranged at the workpiece input end in an up-and-down parallel matching manner and a plurality of guide sleeves arranged on the rack along the movement direction.

Compared with the prior art, the utility model has the main beneficial technical effects that:

1. the traction mechanism of the hoop bending machine adopts the four-connecting-rod pressing mechanism to replace the original two groups of pressurizing oil cylinders to synchronously apply force to the pressing wheel set, optimizes the design structure, reduces traction slip caused by the matching synchronism deviation of the original two groups of pressurizing oil cylinders, and improves the production continuity.

2. Compared with the existing integrated shearing plate design, the shearing mechanism of the hoop bending machine has more accurate matching precision among components, more stable and reliable performance and reduced later maintenance and use cost.

3. The utility model adds the guide wheel set and the guide sleeve, reduces the damage of the jumping of the steel bar in the shearing process to the internal structure of the hoop bending machine, and prolongs the service life.

Drawings

Fig. 1 is a schematic structural view of the hoop bending machine of the present invention.

Fig. 2 is a schematic structural diagram of a shearing mechanism of the hoop bending machine of the present invention.

Fig. 3 is a schematic structural diagram of a shearing mechanism of the hoop bending machine of the present invention.

FIG. 4 is a schematic view of the structure of the crankshaft, eccentric shaft and limiting rod in the shearing mechanism of the present invention.

Fig. 5 is a schematic structural view of a traction mechanism of the hoop bending machine of the present invention.

Fig. 6 is a sectional view of the active traction wheel in the traction mechanism of the hoop bending machine of the present invention.

In the above drawings, 1 is a frame, 2 is a traction mechanism, 21 is a pinch roller set, 22 is a traction roller set, 23 is a pinch roller set support, 24 is a traction roller set support, 25 is a traction input shaft, 26 is a driven pulley, 27 is a pressure arm, 28 is a hydraulic cylinder, 29 is a pressure head, 3 is a guide mechanism, 31 is a guide roller set, 32 is a guide sleeve, 4 is a bending mechanism, 5 is a shearing mechanism, 51 is a crankshaft, 52 is an eccentric shaft, 53 is a connecting rod, 54 is a shearing arm, 55 is a limit lever, 56 is a movable blade, 6 is a driving mechanism, 61 is a driving motor, 62 is a speed reducer, 7 is a workpiece, and 8 is a fixed blade.

Detailed Description

The following examples are intended to illustrate the present invention in detail and should not be construed as limiting the scope of the present invention in any way.

In the description of the present invention, it is to be understood that the orientations or positional relationships indicated as referring to the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like are based on the orientations or positional relationships shown in the drawings only for the convenience of describing technical solutions and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, are not to be construed as limiting the present invention.

Example 1: a hoop bending machine is shown in figure 1 and comprises a machine frame 1, wherein a traction mechanism 2, a guide mechanism 3, a bending mechanism 4, a shearing mechanism 5 and a driving mechanism 6 are arranged on the machine frame 1.

A guide wheel set 31 is arranged on the input port of the workpiece 7 on the frame 1 in a vertically parallel matching manner, a plurality of guide sleeves 32 are arranged along the moving direction of the workpiece 7, and the inner diameter of each guide sleeve 5 is slightly larger than the outer diameter of the workpiece 7, so that the workpiece 7 can move linearly in the hoop bending machine, and the hoop bending machine is prevented from being damaged due to position deviation; still articulated have a baffle on the frame 1, the baffle cover in on the surface of drive mechanism 2 and guiding mechanism 3, set up a hydraulic cylinder on the baffle, under the hoop bending machine normal operating condition, the baffle covers on drive mechanism 2 and guiding mechanism 3, avoids the work piece to expose outside and causes certain hidden danger to construction safety, acts as the effect of protecting sheathing, when needs are changed or are maintained, utilizes the hydraulic cylinder or the cylinder jacking baffle that set up on the baffle, makes the baffle outwards turn up, and then accomplishes quick maintenance and inspection.

The traction mechanism 2 (see fig. 5 to 6) comprises a pressing wheel set 21 and a traction wheel set 22 which are arranged in a vertically parallel matching manner, wherein the pressing wheel set 21 and the traction wheel set 22 are rotatably mounted on

respective supports

23 and 24; a driven pulley 26 is arranged at the end of a traction input shaft 25 where a driving traction wheel of the traction wheel set 22 is positioned, and a driving pulley (not shown in the figure) which is arranged on the output shaft of the traction motor and is in transmission with the driven pulley 26 through a synchronous belt; the pressing wheel set 22 is provided with a pressing mechanism, the pressing mechanism comprises a pressing arm 27 and a hydraulic oil cylinder or an air cylinder 28, the pressing arm comprises a force application end movably hinged with a pressing wheel set support 23 and an adjusting end movably hinged with the hydraulic oil cylinder 28, the force application end of the pressing arm 27 is integrally provided with a pressure head 29, the pressure head 29 penetrates through the support 23 of the pressing wheel set and is connected with a rotating shaft of the pressing wheel, the vertical distance between the force application ends of the pressing arm 27 is smaller than the vertical distance between the adjusting ends, the telescopic direction of the telescopic arm of the hydraulic oil cylinder 28 is parallel to the movement direction of the steel bar, the hydraulic oil cylinder 28 comprises the pressing arm 27 movably hinged with the hydraulic oil cylinder and the pressing wheel set support 23 to form an isosceles trapezoid structure, when the steel bar needs to be further pressed, the telescopic arm of the hydraulic oil cylinder or the air cylinder is contracted, so that the pressure head 29 on the pressing arm acts on the rotating shaft of the pressing wheel set to enable the pressing wheel set to move downwards, the effect of compressing the workpiece is achieved; when the pressing wheel set 22 needs to be loosened, the telescopic arm of the hydraulic oil cylinder or the air cylinder is extended, so that the pressure arm swings outwards, the pressure head 29 of the pressure arm is driven to lift the height of the pressing wheel set, and the effect of loosening the workpiece is achieved.

The shearing mechanism 5 (see fig. 2 to 4) is arranged on the frame 1 of the hoop bending machine, and the shearing mechanism 5 comprises: the crankshaft 51 is connected with the output end of the driving mechanism, and the eccentric shaft 52 arranged on the crankshaft 51 can further adjust the up-and-down swinging amplitude of the shearing arm 54 according to the fixed position of the eccentric shaft 52 on the crankshaft 51; the driving mechanism 6 comprises a driving motor 61 and a speed reducer 62; an output shaft of the driving motor 61 is connected to an input end of a speed reducer 62, and the speed reducer 62 is fixedly installed on the rack 1 through a flange and a bolt; the limiting rod 55 is sleeved on an output shaft of the speed reducer 62, a key groove is formed in the limiting rod 55, the key groove is matched with the key groove in the output shaft of the speed reducer 62, so that the limiting rod 55 is fixed on the output shaft of the speed reducer 62, the limiting rod 55 follows up when the output shaft rotates, and when the limiting rod 55 abuts against the support 1, a shearing action is completed; the eccentric shaft 52 is fixed on the curved pin 51, the central axis of the eccentric shaft 52 is parallel to but not coincident with the central axis of the output shaft, the eccentric shaft 52 penetrates through one end of a connecting rod 53, a rotating bearing is embedded in the connecting rod 53 and matched with the eccentric shaft 52, the other end of the connecting rod 53 and one end of a shearing arm 54 are hinged on a movable hinge shaft together, the rack 1 further comprises a fixed hinge shaft 11, a through hole matched with the shearing arm 54 is formed in the shearing arm 54, so that the shearing arm 54 can swing up and down by taking the fixed hinge shaft 11 as a fulcrum under the driving of the connecting rod 53, a movable blade 56 is fixed at the other end of the shearing arm 54, the movable blade 56 swings up and down along the punching end of the workpiece 7 on the rack 1, and the lower part of the punching end of the workpiece 7 is provided with a fixed blade 8 matched with the movable blade 56 to shear the workpiece 7 together.

The operation and use method of the hoop bending machine comprises the following steps:

the steel bar cutting device comprises a pay-off rack, a guide mechanism, a traction mechanism, a shearing mechanism, a bending mechanism, a power supply and a cutting mechanism. The design that compresses tightly the subassembly through the quadrangle connecting rod has accomplished the work load that original two sets of subassemblies that compress tightly could accomplish, and the synchronism is high, is difficult to appear pulling the phenomenon of skidding, has further improved work efficiency. The shearing arm is driven by the motor, the eccentric shaft and the connecting rod to swing in a reciprocating mode, the movable blade and the fixed blade which are arranged on the shearing arm are matched for cutting, the performance is stable and reliable, compared with the prior art, the shearing arm cutting device reduces the maintenance and use cost, can achieve production continuity, and therefore improves production efficiency. The driving mechanism adopts a driving motor and a speed reducer, and has the advantages of simple structure, easy implementation and convenient maintenance.

While the utility model has been described in detail with reference to the drawings and examples, it will be understood by those skilled in the art that various changes in the details of the embodiments and various changes in the details of construction and materials may be made therein without departing from the spirit of the utility model and without departing from the scope of the utility model.

Claims

1. A hoop bending machine comprises a rack, wherein a traction mechanism, a guide mechanism, a bending mechanism, a shearing mechanism and a driving mechanism are arranged on the rack, and the hoop bending machine is characterized in that the traction mechanism comprises a pressing wheel set, a traction wheel set and a support thereof which are arranged in parallel in a matched manner; the traction input shaft end where the driving traction wheel of the traction wheel set is located is connected with a synchronous belt transmission mechanism, and the compression wheel set is provided with a compression mechanism; the shearing mechanism comprises a crankshaft connected with the driving mechanism, an eccentric shaft arranged on the crankshaft, a limiting rod, a connecting rod, a shearing arm, a movable blade and a fixed blade; the shearing arm is movably hinged on the fixed shaft on the rack; one end of the connecting rod is connected with the eccentric shaft, and the other end of the connecting rod is movably hinged with one end of the shearing arm; the other end of the shearing arm is fixedly provided with the movable blade, and the movable blade swings up and down along the end face of the workpiece through hole on the rack so as to complete the cutting-off action of the workpiece to be processed.

2. The machine according to claim 1, characterized in that said pressing means comprise a pressurizing arm and a hydraulic/pneumatic cylinder; the pressure arm comprises a force application end movably hinged with the support of the pressing wheel set and an adjusting end movably hinged with the liquid/air cylinder.

3. The hoop bending machine according to claim 2, wherein the force application end of the pressure arm is provided with a pressure head which is arranged on a support of the pressing wheel set in a penetrating way and is connected with the pressing wheel rotating shaft.

4. The hoop bending machine of claim 2, wherein the distance between the adjustment ends of the press arms is greater than the distance between the force application ends.

5. The machine according to claim 2, wherein the extension and retraction direction of the piston rod of said hydraulic/pneumatic cylinder is parallel to the movement direction of the workpiece.

6. The hoop bending machine according to claim 1, wherein the limiting rod and the driving mechanism output shaft are provided with mutually matched key grooves, so that the limiting rod is fixed on the driving mechanism output shaft.

7. The machine of claim 1 wherein said fixed blade is secured to a lower portion of the workpiece aperture end of the frame.

8. The hoop bending machine according to claim 1, wherein the guide mechanism comprises a guide wheel set arranged at the workpiece input end in an up-and-down parallel fit manner and a plurality of guide sleeves arranged on the machine frame along the moving direction.