Traction device for extrusion production line

Abstract

The invention discloses a traction device for an extrusion production line and relates to the technical field of plastic extrusion equipment. The device comprises a left wall plate, a bearing end cover, a deep groove ball bearing, a pull rod, a right wall plate, a left end cover, a right end cover, a reel, a steel wire rope, a pressing plate, a speed reducer and a servo motor, the servo motor is installed and connected with the speed reducer, the left end cover is installed at the driving shaft end of the speed reducer, the two ends of the reel are fixedly connected with the left end cover and the right end cover through screws respectively, a steel wire rope is wound on the reel in a spiral-line-shaped single-layer mode, and one end of the steel wire rope is fixed to the reel through a pressing plate. The left end cover and the right end cover are installed on the left wall plate and the right wall plate through deep groove ball bearings respectively, bearing end covers are installed outside the deep groove ball bearings, and the left wall plate and the right wall plate are connected through a pull rod. Constant-speed traction of the traction guide pipe in the extrusion production process is achieved, it is guaranteed that the pipe produced in the pipe guide stage is a qualified product, the production efficiency is greatly improved, and the pipe rejection rate is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of plastic extrusion equipment, in particular to a traction device for an extrusion production line. Background Art

[0002] In the plastic pipe extrusion production line, the pipe is extruded from the extruder die, vacuum-shaped and cooled, spray-cooled, and then pulled and cut. It requires the coordinated use of multiple stand-alone equipment to obtain qualified pipe products. If there is no guide pipe, the pipe extruded from the extrusion die cannot be pulled to the subsequent crawler tractor and cut without the guide pipe. This means that pipe manufacturers must prepare several guide pipes for each specification of pipe. For some large-diameter pipes, especially those with a diameter of DN1200 or above, guide pipes must be purchased from outside for production. This puts high demands on the factory site and production costs. For some large-diameter pipes that cannot be purchased on the market, the production of manufacturers is even more difficult. At present, the traction devices used for pulling the guide pipes on the market basically use small reels and multiple layers of steel wires wound on the reels. Since the distance from the extrusion die to the crawler traction machine is very long, basically more than 50 meters, this requires the steel wire to be wound around the reel many times, but as the steel wire is continuously unwound, the linear speed of the steel wire on the reel changes as the steel wire is unwound layer by layer. This causes the pipes produced by the extrusion production line to be unqualified products. It is necessary to wait until the traction device pulls the guide pipe to the crawler traction machine. When the crawler traction machine is used, the traction speed can be ensured to be constant, and qualified pipes can be produced. This leads to a waste of raw materials. Unqualified pipes need to be shredded and crushed before they can be recycled. Therefore, those skilled in the art provide a traction device for an extrusion production line to solve the problems raised in the above background technology. Summary of the invention

[0003] The object of the present invention is to provide a traction device for an extrusion production line to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: it includes a left wall panel, a bearing end cover, a deep groove ball bearing, a pull rod, a right wall panel, a left end cover, a right end cover, a reel, a wire rope, a pressure plate, a reducer and a servo motor; the servo motor is installed and connected to the reducer, the driving shaft end of the reducer is installed with a left end cover, the two ends of the reel are respectively fixedly connected to the left end cover and the right end cover by screws, the reel is wrapped with a single layer of wire rope in a spiral shape, one end of the wire rope is fixed to the reel by a pressure plate, the left end cover and the right end cover are respectively installed on the left wall panel and the right wall panel through deep groove ball bearings, the bearing end cover is installed outside the deep groove ball bearing, and the left wall panel and the right wall panel are connected by a pull rod.

[0005] Furthermore, the steel wire rope is evenly wound around the outer wall of the reel along the axial direction of the reel.

[0006] Furthermore, a speed sensor is installed on the pull rod, and the speed sensor is connected to the servo motor signal.

[0007] Furthermore, fixing screws are installed at the bottom of the left wall panel and the right wall panel.

[0008] After adopting the above structure, the beneficial effect produced by the present invention is as follows: the traction device for an extrusion production line described in the present invention, by adopting a large reel and a single-layer steel wire rope structure, realizes constant speed traction of the traction guide pipe during the extrusion production process, ensures that the pipes produced in the guide pipe stage are qualified products, greatly improves production efficiency, and reduces the scrap rate of pipes. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural diagram of the present invention; Figure 2 yes Figure 1 Cross-sectional view of .

[0010] Description of reference numerals: Left wall panel 1, bearing end cover 2, deep groove ball bearing 3, pull rod 4, right wall panel 5, left end cover 6, right end cover 7, reel 8, wire rope 9, pressure plate 10, reducer 11, servo motor 12. DETAILED DESCRIPTION

[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0012] See Figure 1 —— Figure 2As shown, this specific embodiment adopts the following technical scheme: it includes a left wall panel 1, a bearing end cover 2, a deep groove ball bearing 3, a pull rod 4, a right wall panel 5, a left end cover 6, a right end cover 7, a reel 8, a wire rope 9, a pressure plate 10, a reducer 11 and a servo motor 12; the servo motor 12 is installed and connected to the reducer 11, and the servo motor 12 provides a constant torque power output. The drive shaft end of the reducer 11 is installed with a left end cover 6, and the power is transmitted through the drive shaft. The two ends of the reel 8 are fixedly connected to the left end cover 6 and the right end cover 7 by screws respectively. The wire rope 9 is spirally wound along the axial direction of the reel 8 and is evenly wound on the outer wall of the reel 8 in a single layer. This winding method ensures that the rotation diameter of the reel 8 remains unchanged during rotation, thereby directly ensuring the constant speed in the mechanical structure. Therefore, the linear speed of the wire rope 9 is constant when it is wound and unwound on the reel 8, thereby realizing constant speed traction of the guide pipe and reducing the scrap rate of the pipe.

[0013] The working principle of the present invention is as follows: the reducer 11 drives the reel 8 to rotate, driving the steel wire rope 9 wound on the reel 8 to be reeled and unreeled, thereby realizing the pulling action of the guide pipe.

[0014] One end of the wire rope 9 is fixed to the reel 8 through a pressure plate 10, which can effectively prevent the wire rope 9 from loosening. The left end cover 6 and the right end cover 7 are respectively installed on the left wall panel 1 and the right wall panel 5 through deep groove ball bearings 3. The bearing end cover 2 is installed outside the deep groove ball bearing 3. The left wall panel 1 and the right wall panel 5 are connected by a pull rod 4, which ensures the stability of the entire traction device structure.

[0015] A speed sensor is installed on the pull rod 4, and the speed sensor is connected to the servo motor 12 signal. The servo motor 12 and the speed sensor for detecting the real-time speed of the wire rope realize closed-loop control, thereby further ensuring the stability of the traction speed.

[0016] When the traction device of the present invention is installed, mounting screws are fixed to the bottom of the left wall panel 1 and the right wall panel 5, and the mounting screws are fixed to the crawler traction machine. The direction and angle of the wire rope 9 are changed by the swing arm installed on the crawler traction machine, and the end of the wire rope 9 is connected to the traction pipe on the extrusion die side through a hook.

[0017] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A traction device for an extrusion production line, characterized in that: It comprises a left wall panel, a bearing end cover, a deep groove ball bearing, a pull rod, a right wall panel, a left end cover, a right end cover, a reel, a wire rope, a pressure plate, a reducer and a servo motor; the servo motor is installed and connected with the reducer, a left end cover is installed at the driving shaft end of the reducer, two ends of the reel are respectively fixedly connected with the left end cover and the right end cover by screws, a wire rope is wound on the reel in a spiral single layer, one end of the wire rope is fixed to the reel by a pressure plate, the left end cover and the right end cover are respectively installed on the left wall panel and the right wall panel through deep groove ball bearings, a bearing end cover is installed outside the deep groove ball bearing, and the left wall panel and the right wall panel are connected by a pull rod.

2. A traction device for an extrusion production line according to claim 1, characterized in that: The steel wire rope is evenly wound around the outer wall of the reel along the axial direction of the reel.

3. The traction device for an extrusion production line according to claim 1, characterized in that: A speed sensor is installed on the pull rod, and the speed sensor is connected with the servo motor signal.

4. The traction device for an extrusion production line according to claim 1, characterized in that: The bottoms of the left wall panel and the right wall panel are fixed with mounting screws.

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