CN214353858U

CN214353858U - Visual mould based on polytetrafluoroethylene coated glass plate

Info

Publication number: CN214353858U
Application number: CN202023029633.5U
Authority: CN
Inventors: 刘珊
Original assignee: Guizhou Institute of Technology
Current assignee: Guizhou Institute of Technology
Priority date: 2020-12-16
Filing date: 2020-12-16
Publication date: 2021-10-08
Anticipated expiration: 2030-12-16

Abstract

The utility model discloses a visual mould based on polytetrafluoroethylene coated glass board, including the support of 2 class U fonts, 2 polytetrafluoroethylene coated sheet have been placed on the surface overlap of 2 supports, and 1 polytetrafluoroethylene medium template is held to the centre gripping between 2 polytetrafluoroethylene coated sheet, is provided with a plurality of spline groove in the polytetrafluoroethylene medium template, and each spline groove top switches on with the outside through 1 runner, the top of the support of class U font is equipped with the horizontal pole that stretches out to the interior level, is equipped with the fastening bolt hole on the horizontal pole, has penetrated fastening bolt in the fastening bolt hole; the spline groove size is the same as the target spline. The middle template is made of polytetrafluoroethylene in the mold, and transparent polytetrafluoroethylene coated glass plates are arranged on two sides of the polytetrafluoroethylene middle template, so that demolding is very convenient. Because the mold is a transparent visible mold, whether the sample strip has bubbles can be visually seen, and therefore targeted bubble removal treatment can be carried out, and the standard sample strip without bubbles is obtained.

Description

Visual mould based on polytetrafluoroethylene coated glass plate

Technical Field

The utility model relates to a visual mould, in particular to a visual mould based on a polytetrafluoroethylene coated glass plate.

Background

Epoxy resin is an important thermosetting resin, has excellent comprehensive performance, and is widely applied to various fields of electronics, automobiles, airplanes, ships, chemical engineering, buildings and the like. The performance test of the epoxy resin has important significance for the research and development of the high-performance epoxy resin. However, epoxy resin has strong adhesion and is easily adhered to a conventional steel mold, which makes mold release difficult. Meanwhile, due to the fact that the epoxy resin is high in brittleness, the size of a sample strip required by performance testing is small, and the sample strip is not easy to completely separate. Meanwhile, as the viscosity of the epoxy resin is higher, bubbles are easily formed during sample preparation, the qualification rate of the test sample strip is further reduced, and the serious waste of raw materials is caused.

Therefore, it is an urgent technical problem to prepare a mold which is easy to demould and is not easy to generate bubbles during sample preparation.

Disclosure of Invention

An object of the utility model is to provide a visual mould based on polytetrafluoroethylene coated glass board. The middle template is made of polytetrafluoroethylene in the mold, and transparent polytetrafluoroethylene coated glass plates are arranged on two sides of the middle template of the polytetrafluoroethylene, so that demolding is very convenient, and a sample strip can be guaranteed to be completely removed.

The technical scheme of the utility model: a visual mold based on a polytetrafluoroethylene coated glass plate comprises 2 similar U-shaped supports, wherein 2 polytetrafluoroethylene coated plates are overlapped on the surfaces of the 2 supports, 1 polytetrafluoroethylene middle template is clamped between the 2 polytetrafluoroethylene coated plates, a plurality of sample strip grooves are formed in the polytetrafluoroethylene middle template, the top of each sample strip groove is communicated with the outside through 1 sprue, a cross rod horizontally extending inwards is arranged at the top of each similar U-shaped support, fastening bolt holes are formed in the cross rod, and fastening bolts penetrate into the fastening bolt holes; the spline groove size is the same as the target spline.

In the visible mold based on the polytetrafluoroethylene coated glass plate, a pressing plate is arranged above the topmost polytetrafluoroethylene coated glass plate.

In the visible mold based on the polytetrafluoroethylene coated glass plate, the polytetrafluoroethylene coated glass plate is a transparent polytetrafluoroethylene coated glass plate, and the surface of the glass plate is a transparent polytetrafluoroethylene nano-coating; the pressing plates are arranged in 2 blocks and are respectively arranged right below the cross frame at the top of each support.

In the visible mold based on the polytetrafluoroethylene coated glass plate, 1 rubber plate is adhered to the bottom of each support.

In the visible mold based on the polytetrafluoroethylene coated glass plate, each support is provided with 2 fastening bolt holes.

The utility model has the advantages that: compared with the prior art, the utility model has the advantages of following several aspects:

1. the utility model discloses a template, clamp plate, appearance strip groove, runner and fastening bolt's cooperation is used in support, rubber slab, polytetrafluoroethylene coated glass board, polytetrafluoroethylene, can be to the direct solidification of the epoxy test spline of various sizes and specifications. The middle template is made of polytetrafluoroethylene in the components, and the glass plates plated with the polytetrafluoroethylene coatings are arranged on two sides of the middle template, so that a poured sample is easy to demould due to the fact that the polytetrafluoroethylene has the lowest friction coefficient in a solid material and high lubrication and non-adhesiveness.

2. Well template both sides set up transparent glass board, make the utility model discloses a mould is transparent visual mould, injects into the mixed liquid of raw materials such as epoxy and curing agent from the runner after, sees through the polytetrafluoroethylene coated glass board and can see the inside bubble whether of spline directly perceivedly to carry out the bubble removal of pertinence and handle, finally obtain the spline that the standard does not have the bubble.

3. The utility model discloses a well template is changed very easily in the mould structure, and the shaping of the test spline of various specifications is realized to the template in the accessible is changed, and well template can use repeatedly.

Drawings

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

FIG. 2 is a schematic side view of FIG. 1;

FIG. 3 is a schematic cross-sectional view of FIG. 2;

FIG. 4 is a schematic structural diagram of one of the templates in the polytetrafluoroethylene;

FIG. 5 is another structural diagram of a template in PTFE.

Reference numerals: 1-support, 2-rubber plate, 3-polytetrafluoroethylene coating plate, 4-polytetrafluoroethylene middle template, 5-pressing plate, 6-sample strip groove, 7-pouring gate and 8-fastening bolt.

Detailed Description

The following description is made with reference to the accompanying drawings and examples, but not to be construed as limiting the invention.

The embodiment of the utility model provides a: a visual mould based on a polytetrafluoroethylene coated glass plate is disclosed, as shown in attached figures 1-5, and comprises 2 parallel U-shaped supports 1 arranged at intervals, 2 polytetrafluoroethylene coated plates 3 are overlapped on the bottom surfaces of the 2 supports 1, 1 polytetrafluoroethylene middle template 4 is clamped between the 2 polytetrafluoroethylene coated plates 3, a plurality of sample grooves 6 are arranged in the polytetrafluoroethylene middle template 4, the top of each sample groove 6 is communicated with the outside through 1 sprue 7, a cross rod extending inwards and horizontally is arranged at the top of a vertical rod of the U-shaped support 1, fastening bolt holes are arranged on the cross rod, and fastening bolts 8 are screwed into the threads of each fastening bolt hole; the spline grooves 6 are the same size as the target spline.

In the use, after placing 2 blocks of polytetrafluoroethylene coating plates 3 and 1 block of polytetrafluoroethylene middle template 4, through rotatory fastening bolt 8 for fastening bolt 8 supports the top polytetrafluoroethylene coating plate 3, thereby presss from both sides the centre gripping with template 4 in the polytetrafluoroethylene, makes 2 blocks of polytetrafluoroethylene coating plates 3 and template 4 in the polytetrafluoroethylene can closely compound die, can coordinate each other after the compound die and enclose the shaping region who establishes the formation product die cavity.

Then, the sample strip can be poured, and the pouring gate 7 of the polytetrafluoroethylene middle template 4 is used for injecting raw material mixed liquid such as epoxy resin, curing agent and the like. The raw material mixture is poured into a sample groove 6 through a pouring gate 7 to form a required test sample.

The polytetrafluoroethylene middle template 4 can be replaced, the thickness of each polytetrafluoroethylene middle template 4 is consistent with the thickness of a target spline in the template, and a plurality of spline grooves 6 in each polytetrafluoroethylene middle template 4 are reasonably arranged, wherein the spline grooves 6 can be spline grooves 6 with the same thickness and the same or different shapes and are suitable for various tests.

The top polytetrafluoroethylene coating plate 3 is provided with the clamp plate 5, and the clamp plate 5 can increase its area of contact with polytetrafluoroethylene coating plate 3 to compress tightly template 4 in the polytetrafluoroethylene better, sealing performance is better. Simultaneously play the cushioning effect to adjacent polytetrafluoroethylene coated sheet 3 with it, avoid fastening bolt 8 direct contact polytetrafluoroethylene coated sheet 3, because what polytetrafluoroethylene coated sheet 3 chooseed for use is the glass board, the glass board is more fragile, easy breakage under the extrusion.

The polytetrafluoroethylene coated plate 3 is a transparent polytetrafluoroethylene coated glass plate, so that whether bubbles exist in the sample strip pouring process can be visually seen through the polytetrafluoroethylene coated glass plate, and targeted bubble removal treatment is performed to finally obtain a standard sample strip without bubbles. The surface of the glass plate is provided with the transparent polytetrafluoroethylene nano coating, so that the later demoulding is easier; the pressing plates 5 are arranged in 2 blocks and are respectively arranged right below the top cross frame of each support 1. Avoiding the press plate 5 from blocking the glass plate.

1 bottom of every support is pasted and is had 1 block of rubber slab 2, and rubber slab 2 plays the cushioning effect to adjacent polytetrafluoroethylene coated glass board with it, avoids 1 direct contact polytetrafluoroethylene coated glass board of support for polytetrafluoroethylene coated glass board is broken easily.

4 fastening bolt holes are formed in 2 supports 1, so that the two polytetrafluoroethylene coating plates 3 and the polytetrafluoroethylene middle template 4 can be tightly matched.

The structure of the template 4 in the polytetrafluoroethylene can be shown in fig. 4 and 5. FIG. 4 is a schematic structural diagram of a middle template 4 made of polytetrafluoroethylene, wherein the thickness of the middle template is 3.0mm, and the sizes of sample grooves 6 are matched with 4 vertical combustion sample bars and 2 water absorption sample sheets of GB national standard.

FIG. 5 is a schematic structural view of another polytetrafluoroethylene middle template 4, which has a thickness of 4.0mm and 4 sample grooves 6 sized to match tensile and bending splines, respectively, of the GB national standard.

Claims

1. The utility model provides a visual mould based on polytetrafluoroethylene coated glass board which characterized in that: the device comprises 2U-shaped supports (1), 2 polytetrafluoroethylene coating plates (3) are overlapped on the surfaces of the 2 supports (1), 1 polytetrafluoroethylene middle template (4) is clamped between the 2 polytetrafluoroethylene coating plates (3), a plurality of sample grooves (6) are formed in the polytetrafluoroethylene middle template (4), the top of each sample groove (6) is communicated with the outside through 1 sprue (7), a cross rod extending inwards and horizontally is arranged at the top of each U-shaped support (1), fastening bolt holes are formed in the cross rod, and fastening bolts (8) penetrate through the fastening bolt holes; the size of the sample strip groove (6) is the same as that of a target sample strip.

2. The visual mold of claim 1 based on polytetrafluoroethylene coated glass plate, characterized in that: a pressing plate (5) is arranged above the polytetrafluoroethylene film coating plate (3) at the topmost part.

3. The visual mold of claim 2 based on polytetrafluoroethylene coated glass plate, characterized in that: the polytetrafluoroethylene coated plate (3) is a transparent polytetrafluoroethylene coated glass plate, and the surface of the glass plate is a transparent polytetrafluoroethylene nano coating; the number of the pressing plates (5) is 2, and the pressing plates are respectively arranged right below the top cross frame of each support (1).

4. The visual mold of claim 1 based on polytetrafluoroethylene coated glass plate, characterized in that: the bottom of each bracket (1) is stuck with 1 rubber plate (2).

5. The visual mold of claim 1 based on polytetrafluoroethylene coated glass plate, characterized in that: each bracket (1) is provided with 2 fastening bolt holes.