Threading device of vertical feeding machine for cold rolling production

Abstract

A threading device of a vertical feeding machine for cold rolling production comprises a feeding frame, a lifting device and a clamping and conveying device are installed on the feeding frame, the clamping and conveying device comprises a clamping and conveying rack, a gear motor is fixedly connected to the clamping and conveying rack, a driving wheel is fixedly connected to an output shaft of the gear motor, a driven wheel is rotatably installed on a sliding block, and the sliding block is fixedly connected to the clamping and conveying rack. The sliding block is in sliding fit with the sliding rail and connected to the action end of the hydraulic cylinder, the hydraulic cylinder is fixedly installed on the clamping and conveying rack, an inclined guide plate is fixedly installed above the driving wheel on the clamping and conveying rack, and a steel conveying device is installed on the rear portion of the feeding frame and comprises a guide rail fixedly connected to the feeding frame. The trolley is in sliding fit with the guide rail, a driving chain wheel driven by a motor is rotatably installed on the lower portion of the guide rail, a driven chain wheel is rotatably installed on the upper portion of the guide rail, the chain surrounds the driving chain wheel and the driven chain wheel, the trolley is fixedly connected to the chain, and clamping pliers are installed on the trolley. The device reduces the labor intensity.

Description

Technical Field

[0001] The utility model relates to the production of cold-rolled steel bars, in particular to a threading device at the beginning of feeding in the production of cold-rolled steel bars, belonging to the technical field of machinery. Background Art

[0002] In cold-rolled ribbed rebar production equipment, the loader pulls the coiled hot-rolled wire rod from the head, straightens it, and descales it before feeding it to the subsequent rolling area. A vertical loader is commonly used in production (see Patent ZL201410092198.0). This vertical loader utilizes the free weight of the rebar during the pulleying process, eliminating some of the problems caused by interlocking rebar. This reduces the failure rate and allows for relatively high production speeds. A pulley is located at the top of the loader. The rebar passes through the pulley and then descends to the bottom pulley. The rebar is then pulled into the rolling mill and fed into the rollers. The mill's power drives the rebar. Vertical loader equipment is typically quite tall, with the top pulley typically more than 5 meters above the coil. Initially, pulling the rebar head from the coil to the top pulley, then bending it and pulling it to the bottom pulley of the loader is a time-consuming and labor-intensive task. This is particularly labor-intensive for larger diameter rebar, and can lead to safety accidents. The applicant disclosed in CN105382034B a high-speed cold-rolled steel bar uncoiling and automatic wire feeding device, which can realize automatic threading. However, it was found during use that the device could be used for steel bars with smaller diameters produced at that time. However, as the diameter of the cold-rolled steel bars increased, threading using this device was not smooth in use and required the assistance of multiple people. Summary of the Invention

[0003] The purpose of the utility model is to provide a threading device for a vertical feeder in cold rolling production, which can reduce the load of manual work during feeding and threading.

[0004] In order to achieve the purpose of the utility model, the following technical solutions are adopted: a threading device for a vertical feeder in cold rolling production, including a feeder frame, a top pulley is rotatably installed on the upper part of the feeder frame, a bottom pulley is installed at the lower rear part of the feeder frame, a lifting device is installed on the feeder frame, a clamp with a clamping steel bar is fixedly installed on the lifting device, a clamping device is installed on the feeder frame near the top pulley, the clamping device includes a clamping frame, a reduction motor is fixedly connected to the clamping frame, a driving wheel is fixedly connected to the output shaft of the reduction motor, and a driven wheel is rotatably installed on a slider, and the slider slides on a slide rail. The rail is fixedly connected to the clamping and conveying frame, the slider is connected to the action end of the liquid cylinder, the hydraulic cylinder is fixedly installed on the clamping and conveying frame, the hydraulic cylinder drives the passive wheel to approach or move away from the active wheel, and an inclined guide plate is fixedly installed above the active wheel on the clamping and conveying frame. A steel feeding device is installed at the rear of the loading rack, and the steel feeding device includes a guide rail fixedly connected to the loading rack, the trolley slides on the guide rail, a driving sprocket driven by a motor is rotatably installed at the lower part of the guide rail, and a passive sprocket is rotatably installed at the upper part, the chain is wrapped around the driving sprocket and the passive sprocket, the trolley is fixedly connected to the chain, and a clamp is installed on the trolley.

[0005] Furthermore, the guide rail is inclined upward and downward and backward.

[0006] Furthermore, the lifting device is an electric hoist.

[0007] The positive and beneficial technical effects of the present invention are: effectively solving the problem of threading the material at the beginning of production, improving the working efficiency, reducing the labor intensity, and making the threading smooth. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is an overall schematic diagram of the present utility model.

[0009] Figure 2 It is a side view schematic diagram of the pinching and conveying device.

[0010] Figure 3 Schematic diagram of a top view of the pinching and conveying device.

[0011] Figure 4 It is a schematic diagram of the steel feeding device. DETAILED DESCRIPTION

[0012] In order to more fully explain the implementation of the present invention, the following examples are provided. These examples are merely illustrative of the present invention and do not limit the scope of the present invention.

[0013] The present invention is further explained in detail in conjunction with the accompanying drawings, in which the marks are: 1: loading rack; 2: operating platform; 3: clamping frame; 4: reduction motor; 5: driving wheel; 6: guide plate; 7: electric hoist; 9: chain; 10: trolley; 11: clamping pliers; 12: lower pulley; 13: passive wheel; 14: slider; 15: hydraulic cylinder; 16: guide rail; 17: passive sprocket; 18: driving sprocket; 19: top pulley.

[0014] As shown in the attached drawings, a threading device for a vertical feeder in cold rolling production includes a feeder frame 1. A top pulley 19 is installed on the upper part of the feeder frame 1, and a bottom pulley 12 is installed on the lower rear part of the feeder frame. A lifting device is installed on the feeder frame. The lifting device is an electric hoist 7. A clamp with a steel bar clamp is fixedly installed on the lifting device. There are many types of clamps in the prior art, such as clamps, spring clamps, etc. A clamping device is installed on the feeder frame near the top pulley. The clamping device includes a clamping frame 3, a reduction motor 4 is fixedly connected to the clamping frame, and a driving wheel 5 is fixedly connected to the output shaft of the reduction motor. The driven wheel 13 is rotatably mounted on a slider 14. The slider slides on the slide rail. The slide rail is not shown in the figure. The slide rail is fixedly connected to the clamping frame 3. The slider 14 is connected to the action end of the liquid cylinder 15. The hydraulic cylinder can be an electric hydraulic cylinder. The hydraulic cylinder is fixedly installed on the clamping frame. The hydraulic cylinder drives the driven wheel to move closer to or away from the driving wheel on the clamping frame. An oblique guide plate 6 is fixedly installed above the driving wheel. The guide plate drives the steel bar to bend toward the top pulley. A steel feeding device is installed at the rear of the loading rack. The steel feeding device includes a guide rail 16 fixedly connected to the loading rack. The guide rail is tilted backward from top to bottom. The trolley 10 slides on the guide rail 16. A driving sprocket 18 driven by a motor is rotatably installed at the lower part of the guide rail 16, and a passive sprocket 17 is rotatably installed at the upper part. The chain 9 is wrapped around the driving sprocket and the passive sprocket. The trolley 10 is fixedly connected to the chain, and a clamp 11 is installed on the trolley. The chain drives the trolley to clamp the steel bar and send it to the bottom pulley 12.

[0015] The working process of this device is as follows: when starting the threading operation, the operator on the operating platform 2 controls the hydraulic cylinder to move the passive wheel of the clamping device away from the active wheel, and then controls the lifting device to clamp the steel bar on the clamping fixture of the lifting device, and lifts the steel bar head to the middle of the active and passive wheels of the clamping device; controls the hydraulic cylinder to make the passive wheel close to the active wheel to clamp the steel bar, and after the clamping device clamps the steel bar, starts the reduction motor, and the steel bar moves upward. When the head of the steel bar touches the guide plate, it moves to the right side (of the steel feeding device) ( Figure 1) moves in a circular arc; after the head of the steel bar moves to a certain position, the steel bar head is clamped by the clamping pliers of the steel feeding device, and the clamping device and the steel feeding device are operated in conjunction until the steel bar is delivered to the bottom pulley 12 of the loader and then to the subsequent rolling mill position; after the head of the steel bar bites into the rolling mill roller, the clamping device and the steel feeding device can be released, and the steel bar is separated from the clamping device roller and enters the top pulley groove, and the threading operation is completed.

[0016] After describing the implementation mode of the present invention in detail, people familiar with the technology can clearly understand that various changes and modifications can be made without departing from the scope and spirit of the above-mentioned patent application. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are within the scope of the technical solution of the present invention, and the present invention is not limited to the implementation mode of the examples given in the specification.

Claims

1. A threading device for a vertical feeder in a cold rolling production line, comprising a feeder frame, a top pulley rotatably mounted on the upper portion of the feeder frame, and a bottom pulley mounted on the lower rear portion of the feeder frame, characterized in that: The driven wheel is rotated and mounted on the sliding rail, and the slider is slidably matched with the slide rail. The slide rail is fixedly connected to the action end of the hydraulic cylinder, and the hydraulic cylinder is fixedly mounted on the clamping and sending frame. The hydraulic cylinder drives the driven wheel to move toward or away from the driving wheel. An inclined guide plate is fixedly installed above the driving wheel on the clamping and sending frame. The rear part of the loading frame is equipped with a steel feeding device. The steel feeding device includes a guide rail fixedly connected to the loading frame, and the trolley is slidably matched on the guide rail. A driving sprocket driven by a motor is rotatably installed at the lower part of the guide rail, and a passive sprocket is rotatably installed on the upper part. The chain is wrapped around the driving sprocket and the passive sprocket. The trolley is fixedly connected to the chain, and a clamp is installed on the trolley.

2. A threading device for a vertical feeder in cold rolling production according to claim 1, characterized in that: The guide rail is inclined from top to bottom and backward.

3. A threading device for a vertical feeder in cold rolling production according to claim 1, characterized in that: The lifting device is an electric hoist.

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