阅读说明：本技术 一种新型液压用耐磨密封环及加工工艺 (Novel hydraulic wear-resistant sealing ring and processing technology ) 是由 孙兆全 李世敏 于 2019-11-18 设计创作，主要内容包括：本发明公开了一种新型液压用耐磨密封环及加工工艺,包括密封环主体、凹槽和卸油槽,所述密封环主体的内径一侧边缘开设有凹槽,所述密封环主体上与凹槽相对立的另一面对应开设有卸油槽；加工工艺,包括以下步骤,步骤一,原料选取；步骤二,原料混合；步骤三,注塑成型；步骤四,车削加工；步骤五,检查包装；其中各组分的重量百分含量分别是：100-150份的改性TPU、2-3份的增粘剂、2-3份的层状硅酸盐粉、2-3份的脱模剂和2-3份的色母；该新型液压用耐磨密封环及加工工艺,彻底杜绝了从业人员接触粉尘工艺带来的职业危害；取消了使用有色金属(青铜粉)作为填充材料,杜绝了有色金属对环境带来的危害。(The invention discloses a novel hydraulic wear-resistant sealing ring and a processing technology thereof, and the novel hydraulic wear-resistant sealing ring comprises a sealing ring main body, a groove and an oil discharge groove, wherein the groove is formed in one side edge of the inner diameter of the sealing ring main body, and the oil discharge groove is correspondingly formed in the other side of the sealing ring main body opposite to the groove; the processing technology comprises the following steps of firstly, selecting raw materials; step two, mixing the raw materials; step three, injection molding; step four, turning; step five, checking and packaging; wherein the weight percentage of each component is as follows: 100-150 parts of modified TPU, 2-3 parts of tackifier, 2-3 parts of layered silicate powder, 2-3 parts of release agent and 2-3 parts of color master batch; the novel hydraulic wear-resistant sealing ring and the processing technology thoroughly avoid occupational hazards caused by a process of contacting dust by workers; the use of non-ferrous metal (bronze powder) as a filling material is eliminated, and the harm of the non-ferrous metal to the environment is avoided.)

1. The utility model provides a novel wear-resisting sealing ring is used to hydraulic pressure, includes sealing ring main part (1), recess (2) and oil discharge groove (3), its characterized in that: a groove (2) is formed in one side edge of the inner diameter of the sealing ring main body (1), and an oil unloading groove (3) is correspondingly formed in the other side, opposite to the groove (2), of the sealing ring main body (1).

2. A processing technology of a novel hydraulic wear-resistant sealing ring comprises the following steps of firstly, selecting raw materials; step two, mixing the raw materials; step three, injection molding; step four, turning; step five, checking and packaging; the method is characterized in that:

in the first step, the weight percentages of the components are as follows: 100-150 parts of modified TPU, 2-3 parts of tackifier, 2-3 parts of layered silicate powder, 2-3 parts of release agent and 2-3 parts of color master batch;

in the second step, all the raw materials are sequentially added into a mixer to be uniformly mixed;

wherein in the third step, the injection molding comprises the following steps:

1) preheating a screw injection molding machine to 130-160 ℃;

2) adding the uniformly mixed mixture into a charging barrel of a screw injection molding machine, and continuously heating until the mixture is in a completely molten state;

3) extrusion-injection molding the molten mixture into a predetermined mold;

4) after molding and demolding, putting the blank into a hot air oven at 100 ℃ for annealing for 20 hours, and cooling for later use;

wherein in the fourth step, the turning comprises the following steps:

1) machining one side of the qualified blank body by turning to form an oil discharge groove (3);

2) turning the inner diameter edge of the other side surface corresponding to the oil unloading groove (3) to form a groove (2);

and in the fifth step, the processed and formed sealing ring main body (1) is checked, and the qualified sealing ring main body is packaged and stored in a cool and dry place.

3. The processing technology of the novel hydraulic wear-resistant sealing ring as claimed in claim 2, is characterized in that: in the first step, the release agent is liquid paraffin.

4. The processing technology of the novel hydraulic wear-resistant sealing ring as claimed in claim 2, is characterized in that: in the first step, the hardness of the modified TPU is 95.

5. The processing technology of the novel hydraulic wear-resistant sealing ring as claimed in claim 2, is characterized in that: in the second step, the stirring speed of the mixer is 50-80rpm, and the stirring time is 8-10 min.

6. The processing technology of the novel hydraulic wear-resistant sealing ring as claimed in claim 2, is characterized in that: in the step three 2), the heating is continued to 177-232 ℃.

7. The processing technology of the novel hydraulic wear-resistant sealing ring as claimed in claim 2, is characterized in that: in the third step 3), the injection amount is 40-80% of the rated amount, and the screw rotation speed is 20-50 r/min.

8. The processing technology of the novel hydraulic wear-resistant sealing ring as claimed in claim 2, is characterized in that: in the third step 4), the placement position of the blank body is noticed, and the local over-high heating is avoided.

Technical Field

The invention relates to the technical field of sealing rings, in particular to a novel hydraulic wear-resistant sealing ring and a processing technology thereof.

Background

The wear-resistant ring of the piston rod in the market is prepared by mixing Polytetrafluoroethylene (PTFE), bronze powder and toner powder through a high-speed mixer, filling the materials into a mold cavity by using a powder metallurgy processing method, pressing and molding by using a press machine under a certain pressure, calcining and molding a blank by using a high-temperature sintering furnace in a program calcining manner, and finally processing the size of the blank by using a numerical control lathe to obtain a finished product.

Disclosure of Invention

The invention aims to provide a novel hydraulic wear-resistant sealing ring and a processing technology thereof, so as to solve the problems in the background technology.

In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides a novel wear-resisting sealing ring is used to hydraulic pressure, includes sealing ring main part, recess and oil discharge groove, the internal diameter one side edge of sealing ring main part is seted up flutedly, the another side that is mutually opposite with the recess in the sealing ring main part corresponds and has seted up oil discharge groove.

A processing technology of a novel hydraulic wear-resistant sealing ring comprises the following steps of firstly, selecting raw materials; step two, mixing the raw materials; step three, injection molding; step four, turning; step five, checking and packaging;

in the first step, the weight percentages of the components are as follows: 100-150 parts of modified TPU, 2-3 parts of tackifier, 2-3 parts of layered silicate powder, 2-3 parts of release agent and 2-3 parts of color master batch;

in the second step, all the raw materials are sequentially added into a mixer to be uniformly mixed;

wherein in the third step, the injection molding comprises the following steps:

1) preheating a screw injection molding machine to 130-160 ℃;

2) adding the uniformly mixed mixture into a charging barrel of a screw injection molding machine, and continuously heating until the mixture is in a completely molten state;

3) extrusion-injection molding the molten mixture into a predetermined mold;

4) after molding and demolding, putting the blank into a hot air oven at 100 ℃ for annealing for 20 hours, and cooling for later use;

wherein in the fourth step, the turning comprises the following steps:

1) machining one side of the qualified blank body by utilizing turning to form an oil discharge groove;

2) turning the inner diameter edge of the other side surface corresponding to the oil unloading groove to form a groove;

and in the fifth step, the processed and formed sealing ring main body is checked, and the qualified sealing ring main body is packaged and stored in a cool and dry place.

According to the technical scheme, in the first step, the release agent is liquid paraffin.

According to the technical scheme, in the step one, the hardness of the modified TPU is 95.

According to the technical scheme, in the second step, the stirring speed of the mixer is 50-80rpm, and the stirring time is 8-10 min.

According to the above technical scheme, in the step three 2), the heating is continued to 177-232 ℃.

According to the technical scheme, in the step three 3), the injection amount is 40-80% of the rated amount, and the screw rotation speed is 20-50 r/min.

According to the technical scheme, in the step three 4), the placing position of the blank body is noticed, and the local overhigh heating is avoided.

Compared with the prior art, the invention has the following beneficial effects: the novel hydraulic wear-resistant sealing ring and the processing technology thereof, 1, the processing technology of the novel wear-resistant sealing ring, thoroughly avoids occupational hazards caused by a dust contact technology of workers; 2. the use of non-ferrous metal (bronze powder) as a filling material is eliminated, and the harm of the non-ferrous metal to the environment is avoided.

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 overall perspective view of the present invention;

FIG. 2 is an elevational view of the overall construction of the present invention;

FIG. 3 is a cross-sectional view of the overall construction of the present invention;

FIG. 4 is a process flow diagram of the present invention;

in the figure: 1. a seal ring main body; 2. a groove; 3. and (6) discharging the oil groove.

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.

Referring to fig. 1-4, the present invention provides a technical solution: