CN114872255A

CN114872255A - Hot-pressing die for thin PTFE high-frequency copper-clad plate

Info

Publication number: CN114872255A
Application number: CN202210557373.3A
Authority: CN
Inventors: 赵晖; 赵文杰; 侯金国
Original assignee: Jiangsu Taifulong Technology Co ltd
Current assignee: Jiangsu Taifulong Technology Co ltd
Priority date: 2022-05-20
Filing date: 2022-05-20
Publication date: 2022-08-09

Abstract

The invention relates to a hot-pressing die of a thin PTFE high-frequency copper-clad plate, which comprises an upper die plate, a lower die plate and a PTFE high-frequency copper-clad plate, wherein a first demoulding cushion layer, a second copper foil for the PTFE high-frequency copper-clad plate, a third PTFE sheet, a fourth copper foil for the PTFE high-frequency copper-clad plate and a fifth demoulding cushion layer are sequentially superposed on the lower die plate, and the upper die plate is arranged on the fifth demoulding cushion layer; the hot pressing die is combined with a die frame arranged around the hot pressing die and then fixed on the steel bearing plate; bear the dish including bearing a set main part and spring clamp, the spring clamp distributes and sets up around hot pressing die, the top of spring clamp is a little higher than the cope match-plate pattern to can block and restrict hot pressing die's displacement. The invention can produce a plurality of products simultaneously, and a plurality of moulds are transported by using the steel bearing plate, thereby greatly saving the cost, realizing large-scale production, and having stable product quality and high production efficiency.

Description

Hot-pressing die for thin PTFE high-frequency copper-clad plate

Technical Field

The invention relates to the technical field of dies, in particular to a hot-pressing die for manufacturing a thin PTFE high-frequency copper-clad plate.

Background

With the continuous development of communication transmission frequency towards high end, higher requirements are also put forward on the high-frequency copper-clad plate, and the market of the high-frequency copper-clad plate is rapidly expanded along with the rapid development of electronic technology and communication technology. The thin PTFE high-frequency copper-clad plate mainly solves the high-frequency characteristic defects that the transmission performance of the common copper-clad plate in the fields of microwave, millimeter wave and the like in communication is unstable and the loss is large. The high-frequency copper-clad plate is required to have the performances of stable dielectric constant and small loss, and can be applied to various microwave circuit systems such as radars, satellite communication, Power Amplifiers (PA), Low Noise Amplifiers (LNA), satellite tuners, low-loss antennas, broadcast transmitters and the like.

At present, the mold for producing the high-frequency copper-clad plate is a traditional mold, hot pressing is carried out in the manufacturing process, the production of a single product can be generally carried out, the production efficiency is low, the thickness of the obtained high-frequency copper-clad plate product is not easy to control, the mold unloading is troublesome, the large-scale production is not facilitated, and the product quality is unstable.

Disclosure of Invention

The invention aims to provide a hot-pressing die for a thin PTFE high-frequency copper-clad plate, which is convenient for producing a plurality of products simultaneously, and utilizes a steel bearing plate to transfer a die, thereby not only saving the cost, but also realizing large-scale production, and having stable product quality and higher production efficiency.

The purpose of the invention is realized by adopting the following technical scheme:

a hot-pressing die for a thin PTFE high-frequency copper-clad plate comprises an upper die plate, a lower die plate and a PTFE high-frequency copper-clad plate, wherein a first layer of demolding cushion layer, a second layer of copper foil for the PTFE high-frequency copper-clad plate, a third layer of PTFE thin sheet, a fourth layer of copper foil for the PTFE high-frequency copper-clad plate and a fifth layer of demolding cushion layer are sequentially stacked on the lower die plate, and the upper die plate is arranged on the fifth layer of demolding cushion layer; the hot-pressing die is combined with a die frame arranged on the periphery of the hot-pressing die and then fixed on the steel bearing plate;

the bearing plate comprises a bearing plate main body and spring clamps, the spring clamps are distributed on the periphery of the hot-pressing die, the top ends of the spring clamps are lower than the upper die plate, and the spring clamps can block and limit the displacement of the hot-pressing die.

As a preferred technical scheme of the invention, the spring clamp is formed by mutually connecting a fixed arm, a movable arm and a spring, and the fixed arm of the spring clamp is fixed on the bearing plate main body through a locking bolt.

As a preferred technical scheme of the invention, the fixed arm and the movable arm of the spring clamp are movably connected through a positioning bolt, the spring is a pressure spring, and the pressure spring is arranged between the fixed arm and the movable arm and can contract along with the pressing of the movable arm of the spring clamp.

As a preferred technical scheme of the invention, the hot-pressing die and the bearing plate main body are both of rectangular structures, and four to eight spring clamps are uniformly distributed around the hot-pressing die; one side of the bearing disc main body is provided with a hanging rod push-pull hole.

As a preferred technical scheme of the invention, the bearing plate main body is provided with a spring clamp fixing hole, and the spring clamp is connected and fixed with the bearing plate main body through a locking bolt and the spring clamp fixing hole.

As the preferred technical scheme of the invention, the upper template, the lower template, the die frame, the spring clamp and the bearing disc main body are made of corrosion-resistant and high-temperature-resistant high-strength steel materials through heat treatment and grinding.

The invention has the beneficial effects that: compared with the prior art, the invention can simultaneously produce a plurality of products, is particularly suitable for pressing on a multilayer high-temperature vacuum compressor, utilizes the steel bearing disc to transfer a plurality of moulds, can greatly save the cost, can realize large-scale production, and has stable product quality and high production efficiency.

The thickness of the PTFE high-frequency copper clad laminate prepared by the method is less than or equal to 0.50 mm; the length of the finished copper-clad plate is 450-650 mm, and the width is 300-500 mm. The thin PTFE high-frequency copper-clad plate has the advantages of small thickness, good flexibility, excellent electrical property and heat resistance, and is suitable for manufacturing various circuit boards at high temperature and high frequency.

Drawings

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

FIG. 2 is a schematic cross-sectional view of FIG. 1;

fig. 3 is a partially enlarged schematic view at a in fig. 2.

In the figure: 1. the device comprises an upper template, 2, spring clamps, 3, a bearing plate main body, 4, a hanging rod push-pull hole, 5, a spring clamp fixing hole, 6, a fixing arm, 7, a movable arm, 8, a lower template, 9, a demolding cushion layer, 10, a PTFE sheet, 11, copper foil, 12 and a mold frame.

Detailed Description

The invention will be further described with reference to the following detailed description of embodiments and with reference to the accompanying drawings in which:

as shown in fig. 1 to 3, a hot-pressing mold for a thin PTFE high-frequency copper-clad plate comprises an upper mold plate 1, a lower mold plate 8 and a PTFE high-frequency copper-clad plate, wherein a first demolding cushion layer 9, a second copper foil 11 for the PTFE high-frequency copper-clad plate, a third PTFE sheet 10, a fourth copper foil 11 for the PTFE high-frequency copper-clad plate and a fifth demolding cushion layer 9 are sequentially stacked on the lower mold plate 8, and the upper mold plate 1 is arranged on the fifth demolding cushion layer 9; the hot pressing die is combined with the die frame 12 arranged around the hot pressing die and then fixed on the steel bearing plate.

Bear the dish including bearing dish main part 3 and spring clamp 2, spring clamp 2 distributes and sets up hot pressing mold's periphery, the top of spring clamp 2 is slightly less than cope match-plate pattern 1 to can block and restrict hot pressing mold's displacement.

In this embodiment, the spring clip 2 is formed by connecting a fixed arm 6, a movable arm 7 and a spring, and the spring clip fixed arm 6 is fixed on the carrier tray main body 3 through a locking bolt. The fixed arm 6 and the movable arm 7 of the spring clamp are movably connected through a positioning bolt, the spring is a pressure spring, and the pressure spring is arranged between the fixed arm 6 and the movable arm 7 and can contract along with the pressing of the movable arm 7 of the spring clamp. The hot-pressing die and the bearing disc main body 3 are both of rectangular structures, and four to eight spring clamps 2 are uniformly distributed around the hot-pressing die; one side of the bearing disc main body 3 is provided with a hanging rod push-pull hole 4.

Bear and be provided with spring clamp fixed orifices 5 on the dish main part 3, spring clamp 2 is connected and is fixed with bearing dish main part 3 through locking bolt and spring clamp fixed orifices 5. The upper template 1, the lower template 8, the die frame 12, the spring clamp 2 and the bearing disc main body 3 are made of corrosion-resistant and high-temperature-resistant high-strength steel materials and are formed by heat treatment and grinding.

The multi-layer high-temperature vacuum pressing machine has the advantages of simple structure, convenience in loading and unloading, economy and practicability, capability of producing a plurality of products at the same time, particular suitability for pressing products by the multi-layer high-temperature vacuum pressing machine, cost saving, realization of large-scale production, stable product quality and high production efficiency due to the fact that a plurality of carrying discs are used for transferring a plurality of molds in production.

The above examples are only for illustrating the concept and technical features of the present invention, and are intended to enable those skilled in the art to understand the technical scheme and implementation manner of the present invention, and the protection scope of the present invention is not limited thereby. All equivalents and changes equivalent to the technical solution of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a hot pressing mold of slim PTFE high frequency copper-clad plate, includes cope match-plate pattern, lower bolster and PTFE high frequency copper-clad plate, characterized by: the lower template is sequentially superposed with a first demoulding cushion layer, a second copper foil for a PTFE high-frequency copper-clad plate, a third PTFE sheet, a fourth copper foil for a PTFE high-frequency copper-clad plate and a fifth demoulding cushion layer, wherein an upper template is arranged on the fifth demoulding cushion layer; the hot-pressing die is combined with a die frame arranged on the periphery of the hot-pressing die and then fixed on the steel bearing plate;

2. The hot-pressing mold for the thin PTFE high-frequency copper-clad plate according to claim 1, which is characterized in that: the spring clip is formed by mutually connecting a fixed arm, a movable arm and a spring, and the fixed arm of the spring clip is fixed on the bearing disc main body through a locking bolt.

3. The hot-pressing mold for the thin PTFE high-frequency copper-clad plate according to claim 2, which is characterized in that: the fixed arm and the movable arm of the spring clamp are movably connected through a positioning bolt, the spring is a pressure spring, and the pressure spring is arranged between the fixed arm and the movable arm and can contract along with the pressing of the movable arm of the spring clamp.

4. The hot-pressing mold for the thin PTFE high-frequency copper-clad plate according to claim 1, which is characterized in that: the hot-pressing die and the bearing disc main body are both of rectangular structures, and four to eight spring clamps are uniformly distributed around the hot-pressing die; one side of the bearing disc main body is provided with a hanging rod push-pull hole.

5. The hot-pressing mold for the thin PTFE high-frequency copper-clad plate according to claim 1, which is characterized in that: bear and be provided with the spring clamp fixed orifices in the dish main part, the spring clamp passes through locking bolt and spring clamp fixed orifices and bears the dish main part and be connected and fix.

6. The hot-pressing mold for the thin PTFE high-frequency copper-clad plate according to claim 1, which is characterized in that: the upper template, the lower template, the die frame, the spring clamp and the bearing disc main body are made of corrosion-resistant and high-temperature-resistant high-strength steel materials and are formed by heat treatment and grinding.