CN212803846U

CN212803846U - Cloth-sandwiched rubber combined shock pad for cylinder piston

Info

Publication number: CN212803846U
Application number: CN202021514376.1U
Authority: CN
Inventors: 王立平; 王林
Original assignee: Qidong Yifang Sealing Technology Co ltd
Current assignee: Qidong Yifang Sealing Technology Co ltd
Priority date: 2020-07-28
Filing date: 2020-07-28
Publication date: 2021-03-26
Anticipated expiration: 2030-07-28

Abstract

The utility model discloses a cylinder piston is with pressing from both sides cloth rubber combination formula shock pad, press from both sides cloth glue including inlayer rubber pad and aramid fiber, the inlayer rubber pad is made by pure rubber, aramid fiber presss from both sides cloth glue is by coating butyronitrile mucilage glue on the aramid fiber cloth of preliminary treatment evenly, and the longitude and latitude line 45 degrees angle of prolonging cloth after the drying is tailor and is formed, aramid fiber cloth wraps up in the outside of inlayer rubber pad, and aramid fiber cloth's seam crossing will have 0.5 cm's overlapping contact. The utility model discloses a make the improvement on current butyronitrile is glued on the basis, change original pure rubber spare into the outer cladding of inlayer rubber 2-3 layers and press from both sides cloth rubber, cloth is with aramid cloth, utilize its higher intensity and tear strength to give the product with sufficient intensity and tear, and also play certain supporting role, under the prerequisite of the shock attenuation performance that guarantees the product excellence, the operating mode reaches full load operation 240 hours product and does not have the damage, the operating mode limit of polyurethane plastics has been reached, receive the extensive good comment of customer.

Description

Cloth-sandwiched rubber combined shock pad for cylinder piston

Technical Field

The utility model relates to a shock pad technical field specifically is a cylinder piston is with pressing from both sides cloth rubber combination formula shock pad.

Background

A piston buffer ring for the cylinder on electric tool because the electric pick is high-frequency impact in the use to reach the effect of destroying the muddy earth. Therefore, the piston in the cylinder of the electric pick impacts the drill bit at a high frequency along with a large impact force, which easily causes damage to the piston rod. Therefore, a cushion washer is added to this portion. Polyurethane plastic is mostly used as a buffer material in the past, but the hardness of the polyurethane plastic is higher, so that the electric pick vibrates strongly in the using process, and the using hand feeling is influenced. And the common rubber part is cracked or even broken quickly under the working condition, so that the use of the tool is influenced. Therefore, the cloth-sandwiched rubber combined damping pad for the cylinder piston is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a cylinder piston is with pressing from both sides cloth rubber combination formula shock pad to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a cylinder piston is with pressing from both sides cloth rubber combination formula shock pad, includes that inlayer rubber pad and aramid fiber press from both sides cloth rubber, inlayer rubber pad is made by pure rubber, aramid fiber presss from both sides cloth rubber is by coating butyronitrile mucilage glue on the aramid fiber cloth of preliminary treatment uniformly, and the longitude and latitude 45 degrees angles of extension cloth after the drying are tailor and are formed, aramid fiber cloth wraps up in the outside of inlayer rubber pad, and aramid fiber cloth's seam crossing will have 0.5 cm's overlapping contact.

As further optimization of the technical scheme, the aramid cloth-sandwiched rubber is uniformly wrapped on the inner rubber pad made of pure rubber and is wrapped by 2-3 layers, so that the rubber combined gasket has enough impact resistance tearing strength and tensile strength. And simultaneously, the good damping effect is kept.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a make the improvement on current butadiene-acrylonitrile rubber basis, change original pure rubber spare into the outer cladding of inlayer rubber 2-3 layers clamp cloth rubber, cloth is with aramid cloth, utilize its higher intensity and tearing strength to give the product with sufficient intensity and tear, and still play certain supporting role, this product can also keep better elasticity, can not influence the resilience performance of product, make the product keep lower vibrations in the use, in order to reach the satisfied state of customer, the operating mode reaches full load operation 240 hours product and does not have the damage, the operating mode limit of polyurethane plastics has been reached, receive the extensive good comment of customer.

Drawings

FIG. 1 is a schematic side sectional view of the present invention;

fig. 2 is a schematic view of the three-dimensional structure after the cross-section of the present invention.

In the figure: 1 inner rubber pad, 2 gasket holes, 3 aramid fiber sandwich cloth rubber.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: the utility model provides a cylinder piston is with pressing from both sides cloth rubber combination formula shock pad, includes inlayer rubber pad 1 and aramid fiber clamp cloth rubber 3, the inlayer rubber pad is made by pure rubber, aramid fiber clamp cloth rubber is by coating butyronitrile mucilage glue on the aramid fiber cloth of preliminary treatment uniformly, and the longitude and latitude 45 degrees angles of extending cloth after the drying are tailor and are formed, aramid fiber clamp cloth rubber 3 parcel is in the outside of inlayer rubber pad 1, and aramid fiber clamp cloth rubber 3's seam crossing will have 0.5 cm's overlapping contact.

Specifically, the aramid fiber cloth-sandwiched rubber 3 is uniformly wrapped on the inner rubber pad 1 made of pure rubber and is wrapped by 2-3 layers, so that the rubber combined gasket is provided with enough impact-resistant tearing strength and tensile strength, the service life of the product is prolonged, and a good damping effect is kept.

The product structure is optimized, the original pure rubber part is changed into the cloth rubber with 2-3 layers of inner rubber layers and outer rubber layers, the cloth is aramid fiber cloth, the high strength and tearing strength of the aramid fiber cloth are utilized to provide enough strength and tearing for the product, and the condition that the gasket is not damaged due to impact when the product is used for a long time is avoided.

The manufacturing method comprises the following steps:

1. firstly, preparing rubber cement by using a rubber material of nitrile rubber and xylene according to a certain ratio (the ratio of nitrile rubber mixed rubber to xylene is 1: 3); uniformly coating adhesive cement on aramid fiber cloth (K49 aramid fiber cloth of DuPont company in America), making into aramid fiber and cloth adhesive, drying, and cutting at 45-degree angle along the warp and weft of the cloth.

2. Preforming the nitrile rubber compound into a ring with a specified size by using preforming equipment, uniformly coating the cut aramid fiber cloth-sandwiched rubber around the preformed rubber ring, and paying attention to the fact that the joint of adjacent aramid fibers is in 0.5cm contact to ensure that the vulcanized aramid fibers have enough bonding strength and no crack occurs.

3. Pre-pressing by a pre-forming die (pre-pressing die temperature between 60-80 ℃ and pressure 15 MPa). And prepressing the coated rubber ring in a preforming mold, so as to prevent the knife edge of the product from pressing the aramid cloth to break the integrity of the aramid cloth during vulcanization. Taking out the product for subsequent vulcanization.

4. And (6) vulcanization molding. And putting the preformed rubber ring into a mold for vulcanization according to a vulcanization process.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a cylinder piston is with pressing from both sides cloth rubber combination formula shock pad, includes inlayer rubber pad (1) and aramid fiber presss from both sides cloth rubber (3), its characterized in that: the aramid fiber cloth-sandwiched rubber is characterized in that the inner rubber pad (1) is made of pure nitrile rubber, the aramid fiber cloth-sandwiched rubber (3) is formed by uniformly coating nitrile rubber slurry on pretreated aramid fiber cloth and cutting the aramid fiber cloth at an angle of 45 degrees along the longitude and latitude of the cloth after drying, the aramid fiber cloth-sandwiched rubber (3) is wrapped on the outer side of the inner rubber pad (1), and the seam of the aramid fiber cloth-sandwiched rubber (3) is overlapped and contacted with the aramid fiber cloth-sandwiched rubber (3) by 0.5 cm.

2. The cloth-sandwiched rubber combined shock pad for the cylinder piston as claimed in claim 1, wherein: the aramid fiber cloth-sandwiched rubber (3) is uniformly wrapped on an inner rubber pad (1) made of pure rubber and is wrapped by 2-3 layers.