CN210911060U

CN210911060U - Screw pulling device

Info

Publication number: CN210911060U
Application number: CN201920344588.0U
Authority: CN
Inventors: 焦玉
Original assignee: Shaanxi Sanyuan Juncheng Machinery Equipment Co ltd
Current assignee: Shaanxi Sanyuan Juncheng Machinery Equipment Co ltd
Priority date: 2019-03-19
Filing date: 2019-03-19
Publication date: 2020-07-03
Anticipated expiration: 2029-03-19

Abstract

The utility model discloses a screw rod pulling device, which is used for pulling a screw rod of an extrusion molding machine and comprises a bracket, wherein the tail part of the bracket is provided with a speed reducing mechanism, an output shaft of the speed reducing mechanism is sleeved with a rope pulley, and a pull rope is wound on the rope pulley; a support plate is arranged at the upper part of the support, a fixed pulley is arranged at the tail part of the support plate, a check ring is arranged at the front part of the support plate, and a through hole with the diameter larger than that of the screw rod is arranged at the middle part of the check ring; the central plane of the wheel groove of the rope wheel, the central plane of the wheel groove of the fixed pulley and the central shaft of the through hole of the retainer ring are positioned in the same vertical plane, and the pull rope bypasses the fixed pulley and extends to the retainer ring. The utility model discloses pull out screw rod device has laborsaving, safe, low-speed, characteristics that the controllability is high.

Description

Screw pulling device

Technical Field

The utility model relates to an extrusion moulding field, concretely relates to pull out screw rod device.

Background

The extrusion molding machine is widely applied to the technical processes of extrusion, molding and the like in the processing of the fields of plastics, food and the like, and the screw rod is often required to be pulled out and cleaned in the process. Because there is material between the barrel and the screw, the screw needs to be pulled out by overcoming a certain resistance. The screw rod is pulled out by manpower generally, and although the method can achieve the purpose of the requirement of pulling out the screw rod, the method has the following defects: firstly, the labor intensity of workers is high, and the efficiency is low; and secondly, prying or manual pulling-out is needed in the pulling-out process and is carried out at a higher temperature of the screw, so that potential safety hazards such as scalding, smashing and the like exist.

SUMMERY OF THE UTILITY MODEL

For solving the technical problem, the utility model aims at providing a pull out screw rod device, the device utilizes reduction gears winding stay cord, and reuse stay cord traction screw utilizes the device to demolish the screw rod and has characteristics laborsaving, safe, low-speed, that the controllability is high.

In order to achieve the above purpose, the present invention adopts the following technical solution.

A screw rod pulling device is used for pulling a screw rod of an extrusion molding machine and comprises a support, wherein a speed reducing mechanism is arranged at the tail part of the support, a rope wheel is sleeved on an output shaft of the speed reducing mechanism, and a pull rope is wound on the rope wheel; a support plate is arranged at the upper part of the support, a fixed pulley is arranged at the tail part of the support plate, a check ring is arranged at the front part of the support plate, and a through hole with the diameter larger than that of the screw rod is arranged at the middle part of the check ring; the central plane of the wheel groove of the rope wheel, the central plane of the wheel groove of the fixed pulley and the central shaft of the through hole of the retainer ring are positioned in the same vertical plane, and the pull rope bypasses the fixed pulley and extends to the retainer ring.

Further, the speed reducing mechanism is a hand-operated speed reducer.

Further, the pull rope is a steel wire rope.

Further, the bottom of support is provided with the truckle of stopping of area.

Furthermore, the bottom of the support is provided with an adjustable supporting leg.

Further, the periphery of the supporting plate is provided with an upward flanging.

Furthermore, a slag discharge port is arranged on the supporting plate.

Further, the slag discharge port is positioned in the front of the supporting plate.

The utility model discloses pull out screw rod device has characteristics laborsaving, safe, low-speed, that the controllability is high for prior art.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic view of an embodiment of a screw pulling device according to the present invention;

fig. 2 is a schematic perspective view of an embodiment of the screw pulling device of the present invention;

in the above figures: 1, a bracket; 2, a speed reducing mechanism; 3, rope wheels; 4, pulling a rope; 5, supporting the plate; 501, flanging; 502 slag discharge port; 6, fixing a pulley; 7, a check ring; 701 through holes; 8, a brake caster wheel; 9 adjustable supporting feet; 10, a screw rod; 11 barrels.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.

In the following description, specific details are set forth in order to provide a thorough understanding of the present invention. The invention can be implemented in a number of other ways than those described herein, and those skilled in the art will be able to make similar generalizations without departing from the spirit of the invention. The invention is therefore not limited to the specific embodiments disclosed below.

Referring to fig. 1 and 2, a screw pulling device for pulling out a screw 10 of an extrusion molding machine comprises a bracket 1, wherein a speed reducing mechanism 2 is arranged at the tail part of the bracket 1, a rope pulley 3 is sleeved on an output shaft of the speed reducing mechanism 2, and a pull rope 4 is wound on the rope pulley 3; a support plate 5 is arranged at the upper part of the support 1, a fixed pulley 6 is arranged at the tail part of the support plate 5, a check ring 7 is arranged at the front part of the support plate 5, and a through hole 701 with the diameter larger than that of the screw 10 is arranged at the middle part of the check ring 7; the central plane of the wheel groove of the rope wheel 3, the central plane of the wheel groove of the fixed pulley 6 and the central axis of the through hole 701 of the retainer ring 7 are positioned in the same vertical plane, and the pull rope 4 extends to the retainer ring 7 by passing around the fixed pulley 6.

The screw 10 needs to be removed from the barrel 11 after the extruder is used for a long time or is blocked, and the screw 10 needs to be pulled out by overcoming a certain resistance because of the material between the barrel 11 and the screw 10. However, extrusion molding machines are usually operated at high temperatures, and the productivity is affected by drawing out the screw 10 after the machine is naturally cooled. It is very inconvenient to pull out screw rod 10 under high temperature, scalds operating personnel very easily, in addition, if the material generally bonds feed cylinder 11 and screw rod 10 together after the natural cooling, has increased the degree of difficulty of pulling out. In this embodiment, the head of the screw 10 passes through the through hole 701 of the retainer 7, and the retainer 7 is stopped at the end of the barrel 11; the tail part of the bracket 1 is provided with a speed reducing mechanism 2, an output shaft of the speed reducing mechanism 2 is sleeved with a rope pulley 3, a pull rope 4 is wound on the rope pulley 3, and the pull rope 4 is connected with the head part of the screw rod 10. Because the speed reducing mechanism 2 is used, the operation is more labor-saving, the speed of pulling out the screw 10 is reduced, and the process of pulling out the screw is labor-saving and safe.

Further, the speed reduction mechanism 2 is a hand-operated speed reducer.

Preferably, the hand-operated speed reducer is specifically adopted in the embodiment, and the hand-operated speed reducer is used, so that the screw 10 can be stopped at any time in the operation process of pulling the screw 10, and hard damage to the screw 10 caused by strong pulling when the screw 10 is clamped with the charging barrel 11 by using other driving forces such as a hydraulic cylinder and a speed reduction motor is avoided.

Further, the pull rope 4 is a steel wire rope.

Preferably, in this embodiment, a wire rope is preferably used as the pulling rope 4 for secure safety.

Further, the bottom of support 1 is provided with the truckle 8 of stopping of taking.

In the above embodiment, since the screw pulling device is used as an auxiliary tool fixture of the extrusion molding machine and cannot be used during the operation of the extrusion molding machine, the screw pulling device needs to frequently go back and forth between the working area and the tool fixture area, for the convenience of movement, the bottom of the bracket 1 is provided with the caster 8 with a brake, and when the screw pulling device moves to a required position, the screw pulling device can be fixed by stepping on the brake with the caster 8 with a brake.

Further, the bottom of the support 1 is provided with an adjustable supporting foot 9.

Because the ground of the factory building is not necessarily very flat, and the screw 10 belongs to a heavy part, and the operation process needs to be relatively stable, in the above embodiment, the adjustable supporting feet 9 are arranged at the bottom of the bracket 1 to adapt to the uneven ground, so that the screw pulling device is in a stable state.

Further, the periphery of the supporting plate 5 is provided with an upward flange 501.

Because the screw 10 is generally a cylinder, in order to prevent the pulled screw 10 from rolling to the left and right sides and injuring operators, the upward flanging 501 is arranged on the periphery of the supporting plate 5, so that the process of pulling the screw 10 is safer.

Further, a slag discharge port 502 is arranged on the support plate 5. Further, the slag discharge opening 502 is located at the front of the support plate 5.

In order to facilitate the cleaning of the material cleaned from the screw 10, a slag discharge opening 502 is provided in the front of the support plate 5.

Although the invention has been described in detail in this specification with reference to specific embodiments and illustrative embodiments, it will be apparent to those skilled in the art that certain changes and modifications can be made therein without departing from the scope of the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. A screw pulling device is used for pulling a screw (10) of an extrusion molding machine and is characterized by comprising a support (1), wherein the tail part of the support (1) is provided with a speed reducing mechanism (2), an output shaft of the speed reducing mechanism (2) is sleeved with a rope pulley (3), and a pull rope (4) is wound on the rope pulley (3);

a supporting plate (5) is arranged at the upper part of the support (1), a fixed pulley (6) is arranged at the tail part of the supporting plate (5), a check ring (7) is arranged at the front part of the supporting plate (5), and a through hole (701) with the diameter larger than that of the screw rod (10) is arranged in the middle part of the check ring (7);

the center plane of the wheel groove of the rope wheel (3), the center plane of the wheel groove of the fixed pulley (6) and the center shaft of the through hole (701) of the retainer ring (7) are in the same vertical plane, and the pull rope (4) extends to the retainer ring (7) by bypassing the fixed pulley (6).

2. The screw pulling device as claimed in claim 1, wherein the speed reduction mechanism (2) is a hand-operated speed reducer.

3. The screw pulling device according to claim 1, wherein the pulling rope (4) is a steel wire rope.

4. Screw pulling device according to claim 1, characterized in that the bottom of the bracket (1) is provided with casters with brake (8).

5. Screw pulling device according to claim 1, characterised in that the bottom of the support (1) is provided with adjustable support feet (9).

6. Screw-pulling device according to claim 1, characterised in that the support plate (5) is provided with an upward flanging (501) at its periphery.

7. Screw pulling device according to claim 1, characterised in that the support plate (5) is provided with a slag discharge opening (502).

8. The screw pulling device according to claim 7, wherein the slag discharge opening (502) is located in front of the support plate (5).