CN215320903U

CN215320903U - Device for rolling graphite pad

Info

Publication number: CN215320903U
Application number: CN202120594806.3U
Authority: CN
Inventors: 狄厚伟
Original assignee: Shandong Huifen Instrument Co ltd
Current assignee: Shandong Huifen Instrument Co ltd
Priority date: 2021-03-24
Filing date: 2021-03-24
Publication date: 2021-12-28
Anticipated expiration: 2031-03-24

Abstract

The utility model relates to the technical field of graphite pad manufacturing, in particular to a graphite pad rolling device. The structure of the graphite pad pressing area comprises an upper die and a lower die, wherein a first die core is screwed in the upper die, a second die core is screwed in the lower die, the second die core is inserted and embedded in the first die core, die sleeves are arranged on the outer sides of the first die core and the second die core, and a graphite pad pressing area is formed between the lower end face of the first die core and the upper portion of the lower portion of the second die core. According to the graphite pad rolling device, a hammer rolling mode is not adopted when the graphite pad is rolled, and the graphite pad rolling device can be realized by virtue of punching of a small-sized manual punch press, and the height of the punched graphite pad is consistent as the descending height of the punching column of the manual punch press can be adjusted.

Description

Device for rolling graphite pad

Technical Field

The utility model relates to the technical field of graphite pad manufacturing, in particular to a graphite pad rolling device.

Background

Gaskets for gas path seals for gas chromatographs generally have:

1. silica gel pad: generally used for sealing gaskets of air passages at normal temperature, and the using amount is large

2. Fluorine rubber O-shaped ring gasket: high temperature resistant, multi-purpose seal for lining pipe of vaporization chamber

3. High-temperature resistant T-shaped or flat gasket, special gasket for sealing injection guide head of vaporizing chamber

4. Graphite cushion: because of the special high temperature resistance of graphite, in the gas chromatograph, the graphite pad is mainly sealed at the injection port and the detector nozzle part, and the two ends of the packed column and the capillary column, is the most important sealing pad of the gas chromatograph, is also an important consumable material which needs to be frequently replaced in the use process at ordinary times, has large consumption, and needs the enterprise to produce according to the requirements of respective chromatograph pairs.

At present, the disadvantages of producing such graphite pads are:

1. the grinding tool for producing the graphite pad is simple and rough, the surface finish of the processed graphite pad is not high, and the outer diameter and the inner diameter are different in size and need to be selected when the graphite pad is used.

2. When the graphite pad is pressed and rolled, an operator needs to use a rubber hammer to roll the graphite pad, time and labor are wasted, the height of the rolled graphite pad is different, and more waste graphite pads are produced.

Disclosure of Invention

In order to solve the problems in the prior art, the utility model provides a graphite pad rolling device, which can be realized by punching with a small-sized manual punch without adopting a hammer rolling mode when rolling a graphite pad, and the height of the punched graphite pad is consistent as the descending height of a punching column of the manual punch can be adjusted.

The technical scheme adopted by the utility model is as follows:

the utility model provides a roll graphite pad device, includes mould and bed die, goes up the spiro union of mould in has first mould core, the bed die in the spiro union have the second mould core, the second mould core insert inlay the first mould in, just first mould core and second mould core outside be provided with the mould cover, the lower terminal surface of first mould core and second mould core lower part top between form the graphite pad and roll the district.

The second die core comprises a lower die screwing part, a rolling part and a first die core inserting part which are sequentially arranged from bottom to top, wherein an external thread is arranged on the outer side of the lower die screwing part, the rolling part is in a boss shape, and the space between the upper surface of the rolling part and the lower end surface of the first die core and the space between the upper surface of the rolling part and the inner wall of the die sleeve form a graphite pad rolling area.

The upper end of the first mold core inserting part is in a tip shape.

The first mould core comprises a connecting part screwed with the upper mould and a body used for inserting and embedding the second mould core, a hole is formed in the body and used for inserting and embedding the second mould core, and the hole upwards extends to the connecting part and is communicated with the connecting part.

The hole is divided into two sections, and the inner diameter of the hole in the connecting part is smaller than that of the hole in the body.

1. All are machined parts, are machined after being specially treated by 201 stainless steel materials with high hardness and high smoothness after machining, and simultaneously require to grind a first die core, a second die core and a die sleeve to be subjected to surface mirror surface treatment during machining, and the sizes needing to be matched are matched by tolerance, so that the inner surface and the outer surface of the manufactured graphite pad are smooth and have no burrs.

2. The graphite pad is rolled without adopting a hammer rolling mode, the utility model adopts a small-sized manual punch press for punching, and the descending height of the punching column of the manual punch press can be adjusted, so that the height of the punched graphite pad is the same, and the condition of different heights is avoided.

3. The graphite paper is high-quality graphite paper with few organic impurities, the graphite paper with certain length and width is cut in advance and rolled up, after the size is adjusted, enough graphite paper is cut, and the graphite paper is rolled into a roll for standby by a scriber.

The technical scheme provided by the utility model has the beneficial effects that:

1. the graphite pad processed by the utility model has bright inner and outer surfaces, no burrs, basically consistent inner hole and outer diameter sizes, and basically consistent height, and completely meets the use requirement of a gas chromatograph.

2. After the manual punching machine is used, the processing efficiency is greatly improved by more than 5 times, waste products of the manufactured graphite pads basically do not exist, time and labor are saved, and cost is saved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a graphite pad rolling device according to the present invention;

FIG. 2 is a schematic structural diagram of a first mold core of an apparatus for rolling a graphite pad according to the present invention;

fig. 3 is a schematic structural diagram of a second mold core of the graphite pad rolling device according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Example one

As shown in the attached drawings 1-3, a graphite pad rolling device comprises an upper die 1 and a lower die 2, wherein a first die core 3 is screwed in the upper die 1, a second die core 4 is screwed in the lower die 2, the second die core 4 is inserted and embedded in the first die core 3, a die sleeve 5 is arranged outside the first die core 3 and the second die core 4, and a graphite pad rolling area 6 is formed between the lower end surface of the first die core 3 and the upper part of the lower part of the second die core 4.

The second mold core 4 of this embodiment includes by lower supreme bed die thread part 41 that sets gradually, the portion of inlaying 43 is inserted to the portion of rolling 42 and first mold core, the bed die thread part 41 outside be provided with the external screw thread, the portion of rolling 42 be the boss form, the portion of rolling 42 upper surface and the lower terminal surface of first mold core 3 and the space between the inner wall of mold sleeve 5 form graphite pad roll district 6.

The upper end of the first die core insertion portion 43 is in a tip shape.

The first die core 3 comprises a connecting part 31 of the upper die 1 in a screwed mode and a body 32 used for being inserted and embedded into the second die core 4, a hole 33 is formed in the body 32, the hole 33 is used for being inserted and embedded into the second die core 4, and the hole 3 upwards extends to the connecting part and is communicated with the connecting part and used for containing and keeping the same internal and external pressure during rolling.

The hole 33 is divided into two sections, and the inner diameter of the hole in the connecting portion 31 is smaller than the inner diameter of the hole in the body 32.

When the rolling graphite pad device is used, the upper die 1 is tightly screwed to the upper end of the first die core 3, the lower die is tightly screwed to the lower end of the second die core 4, the die sleeve 5 is sleeved on the combined piece of the lower die 2 and the second die core 4, then rolled graphite paper is placed at the position of the graphite pad rolling area 6 along the annular gap, then the combined piece of the upper die 1 and the first die core 3 is inserted into the combined piece of the die sleeve 5 and the lower die 2 and the second die core 4, finally the whole combined piece is pre-pressed by hand firstly and then is placed on a manual punching machine for rolling, and the graphite pad is pushed out after rolling.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a roll graphite pad device, includes mould and bed die, its characterized in that, the last mould in spiro union have a first mould core, the bed die in spiro union have a second mould core, the second mould core insert inlay the first mould in, just first mould core and second mould core outside be provided with the mould cover, the lower terminal surface of first mould core and second mould core lower part top between form the graphite pad and roll the district.

2. The graphite pad rolling device according to claim 1, wherein the second die core comprises a lower die thread-connecting part, a rolling part and a first die core inserting-embedding part which are sequentially arranged from bottom to top, an external thread is arranged on the outer side of the lower die thread-connecting part, the rolling part is in a boss shape, and a space between the upper surface of the rolling part, the lower end surface of the first die core and the inner wall of the die sleeve forms the graphite pad rolling area.

3. A rolled graphite pad device according to claim 2, wherein the upper end of the first die core insert portion is pointed.

4. A rolled graphite pad device according to claim 1, wherein the first mold core includes a connecting portion for screwing with the upper mold and a body for inserting and fitting the second mold core, and the body is provided with a hole for inserting and fitting the second mold core, and the hole extends upward to the connecting portion and is through.

5. A rolled graphite pad device according to claim 4, wherein the bore is divided into two sections, the bore in the connecting portion having a smaller internal diameter than the bore in the body.