阅读说明：本技术 一种挤出机自动清真空装置 (Automatic vacuum cleaning device of extruder ) 是由 殷小平 凌昌冰 刘亚鹏 黄红艳 曾泽 陈勇 黄红胜 于 2019-04-12 设计创作，主要内容包括：本发明公开了一种挤出机自动清真空装置,包括中空不锈钢管、真空盒、冲头、导杆、气缸和时间继电器,所述真空盒设置在中空不锈钢管上方,所述真空盒与中空不锈钢管顶端卡接,所述真空盒包括真空盖板、真空口底座及真空盒侧板,所述真空盖板左侧设有用于连接真空表的安装孔,所述真空盒下方设置有挤出机料筒,所述真空盒右端通过两个螺钉固定于挤出机料筒上,所述冲头设于真空盒右侧、分别位于螺钉两旁,所述冲头顶端连接有导杆。本发明的挤出机自动清真空装置自动清理真空,清理方式简单,极大减少了员工工作量和生产废料,结构简单、安装便捷,操作简单明了,适用性强。(The invention discloses an automatic vacuum cleaning device of an extruder, which comprises a hollow stainless steel pipe, a vacuum box, punches, guide rods, a cylinder and a time relay, wherein the vacuum box is arranged above the hollow stainless steel pipe and is clamped with the top end of the hollow stainless steel pipe, the vacuum box comprises a vacuum cover plate, a vacuum port base and a vacuum box side plate, mounting holes for connecting a vacuum meter are formed in the left side of the vacuum cover plate, an extruder charging barrel is arranged below the vacuum box, the right end of the vacuum box is fixed on the extruder charging barrel through two screws, the punches are arranged on the right side of the vacuum box and are respectively positioned on two sides of the screws, and the top ends of the punches are connected with the guide rods. The automatic vacuum cleaning device for the extruder disclosed by the invention can automatically clean vacuum, has a simple cleaning mode, greatly reduces the workload of staff and production waste, and is simple in structure, convenient and fast to install, simple and clear to operate and strong in applicability.)

1. The utility model provides an automatic vacuum cleaner of extruder, includes cavity stainless steel pipe, vacuum box, drift, guide arm, cylinder and time relay, its characterized in that: the utility model discloses a vacuum box, including vacuum box, vacuum cover plate, vacuum table, guide pin top, vacuum box, vacuum chamber.

2. An extruder auto-vacuum apparatus according to claim 1, wherein: the extruder is characterized in that a charging barrel vacuum port is formed in the charging barrel of the extruder, the punch corresponds to the charging barrel vacuum port, and the outer diameter of the punch is smaller than that of the charging barrel vacuum port.

3. An extruder auto-vacuum apparatus according to claim 2, wherein: and a silica gel sealing strip is arranged between the vacuum cover plate and the side plate of the vacuum box.

4. An extruder auto-vacuum apparatus according to claim 1, wherein: the punch moves up and down under the driving action of the upper mounting plate pushed by the cylinder.

5. An extruder auto-vacuum apparatus according to claim 1, wherein: the cylinder is started and stopped under the control of a time relay.

6. An extruder auto-vacuum apparatus according to claim 1, wherein: the working principle comprises the following steps:

1) setting the cycle time of a time relay for 10s-1 min;

2) the upper mounting plate moves downwards in a radial direction under the pushing action of the cylinder and drives the punch to move downwards in the radial direction, and when the punch moves downwards, fine powder gathered on the inner wall of the vacuum port is pushed back into the charging barrel;

3) after the upper mounting plate finishes the downward movement, the upper mounting plate moves radially upwards under the pushing action of the cylinder and drives the punch to move radially upwards and return to the original position;

4) after the set cycle time is reached, the above actions are repeated.

Technical Field

The invention relates to the technical field of extruders, in particular to an automatic vacuum cleaning device of an extruder.

Background

In the process of heating and extruding PVC products by the extruder, in order to ensure the normal work of the extruder, gas and fine powder substances generated in the extruding process of the extruder need to be separated in a vacuumizing mode, but after a period of time, the fine powder substances are easy to gather at a vacuum port, so that the vacuum pipeline is blocked. On one hand, the color of the gathered fine powder is changed from white to yellow to black according to the time, and a part of the gathered fine powder falls into an extruded product due to the vibration of an extruder, so that unqualified products such as small black spots, hemp marks, black lines and the like appear on the product. On the other hand, technicians also need to clean the vacuum pipeline on line regularly, which takes about half an hour, and in the cleaning process, the produced products can only be treated as waste materials, which not only consumes time, but also increases the production cost.

Disclosure of Invention

In order to solve the problems of difficult vacuum cleaning and high waste production rate in the prior art, the invention aims to provide the timing online automatic vacuum cleaning device which is easy to install and has the advantages of wide application range and convenience in use.

In order to achieve the purpose, the invention provides the following technical scheme: an automatic vacuum cleaning device of an extruder comprises a hollow stainless steel tube, a vacuum box, a punch, a guide rod, a cylinder and a time relay, the vacuum box is arranged above the hollow stainless steel pipe and is clamped with the top end of the hollow stainless steel pipe, the vacuum box comprises a vacuum cover plate, a vacuum port base and a vacuum box side plate, the left side of the vacuum cover plate is provided with a mounting hole for connecting a vacuum meter, an extruder charging barrel is arranged below the vacuum box, the right end of the vacuum box is fixed on the extruder charging barrel through two screws, the punch is arranged on the right side of the vacuum box and is respectively positioned at two sides of the screw, the top end of the punch is connected with a guide rod, the guide arm is provided with two, the fixed mounting panel that is provided with in guide arm top, the guide arm passes through the fixed horizontal connection of upper mounting panel, fixed connection cylinder in the middle of the mounting panel, the cylinder is connected with time relay.

Furthermore, a charging barrel vacuum port is formed in the charging barrel of the extruder, the punch corresponds to the charging barrel vacuum port, and the outer diameter of the punch is smaller than that of the charging barrel vacuum port.

Furthermore, a silica gel sealing strip is arranged between the vacuum cover plate and the side plate of the vacuum box.

Furthermore, the punch moves up and down under the driving action of the cylinder pushing the upper mounting plate.

Further, the cylinder is started and stopped under the control of a time relay, and the cycle time of the time relay 7 is set as follows: 10s-1 min.

The process flow of the invention is as follows:

the cycle time of the time relay is set to be 10s-1min, the upper mounting plate moves radially downwards under the pushing action of the cylinder and drives the punch to move radially downwards, fine powder gathered on the inner wall of the vacuum port is pushed back into the charging barrel when the punch moves downwards, so that the phenomenon of color change caused by overlong fine powder gathering time pumped out by the vacuum pump is avoided, waste materials in the production process are reduced, after the upper mounting plate completes the downward movement action, the upper mounting plate moves radially upwards under the pushing action of the cylinder and drives the punch to move radially upwards and return to the original position. After the set cycle time is reached, the above actions are repeated.

The invention has the beneficial effects that:

(1) the invention periodically pushes the fine powder back to the charging barrel by utilizing the thrust of the punch, avoids the long-time retention of the fine powder, prevents the raw materials from being degraded and discolored, reduces the generation of waste materials, does not need staff to clean vacuum on line during production, directly and automatically cleans vacuum periodically under the action of the invention, and greatly reduces the workload of the staff and the production waste materials.

(2) The vacuum box designed by the invention can be connected with a vacuum tank, the sealing performance is high, and the up-and-down movement of the punch does not influence the vacuum of the extruder.

(3) The invention has the advantages of simple structure, convenient installation, simple and clear operation and strong applicability.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic cross-sectional view of an automatic vacuum cleaner for an extruder according to the present invention;

fig. 2 is a perspective view of the automatic vacuum cleaner of an extruder according to the present invention.

In the figure: 1. a hollow stainless steel tube; 2. a vacuum box; 3. mounting holes; 4. a punch; 5. a guide bar; 6. a cylinder; 7. a time relay; 8. a screw; 9. a barrel of an extruder; 10. mounting a plate; 11. a charging barrel vacuum port; 21. a vacuum cover plate; 22. a vacuum port base; 23. a vacuum box side plate; 24. a silica gel sealing strip.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.