Mixture for producing insulated terminal and preparation method of insulated terminal

Abstract

The invention relates to a mixture for producing an insulated terminal and a preparation method of the insulated terminal, and the preparation method comprises the following steps: step 1, stirring and mixing PA610, glass fibers and glass beads in a stirrer to obtain a uniformly dispersed mixture, the mixture comprises the following components by mass percent: 73-77% of PA610, 1-3% of glass fibers, 1-3% of glass beads, 1-3% of glass beads, 1-3% of glass fibers and 1-3% of glass beads; the content of the glass fiber is 18-22%; the content of glass beads is 3-7%; 2, melting the mixture obtained in the step 1, and putting the molten mixture into a mold of an injection molding machine for injection molding; 3, the mixture in the mold is cooled after being subjected to pressure maintaining, finally demolding is conducted, and the insulated terminal is manufactured. According to the insulated terminal manufactured through the mixture, the surface of the insulated terminal is smoother, the roughness is uniform and consistent, burrs and cracks do not exist, secondary machining does not need to be conducted after demolding, the production efficiency can be improved, and the production cost of the insulated terminal can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of insulation terminal, in particular to a mixture for producing insulation terminal and a preparation method of insulation terminal. BACKGROUND

[0002] At present, large electronic devices such as reactors, capacitors and other large electronic devices of power facilities such as substations need to use insulation terminals with high requirements such as voltage resistance, corrosion resistance and weather resistance. At present, the general method is to cut and form the electric wood rod through the lathe, which has low processing efficiency and consumes a lot of materials. Some also adopt injection molding processing, but due to the lack of process, the product made is only a rough material, which needs to reserve a certain amount of excess, and then adopt lathe secondary cutting processing to make the surface reach a certain flatness. However, the above two production methods also have the problem of low production efficiency of insulation terminals, and the surface of the insulation terminal is not smooth enough, which leads to the problem that if the surface is not smooth enough, the local stress concentration may be concentrated when heated, which is easy to break. Therefore, the applicant provides a mixture for producing insulation terminal and a preparation method of insulation terminal, which can solve the above problems for consumers to choose. SUMMARY

[0003] The purpose of the present application is to solve the above-mentioned problems, and to provide a mixture for producing insulation terminal and a preparation method of insulation terminal with simple and reasonable structure.

[0004] A mixture for producing insulation terminal, the mixture is composed of the following components in mass percentage: PA610 content 73-77%; glass fiber content 18-22%; and glass microbead content 3-7%.

[0005] The purpose of the present application can also be solved by the following technical measures: As a more specific scheme, the total content of glass fiber and glass microbead is 25±2% in mass percentage.

[0006] A preparation method of insulation terminal, comprising the following steps: Step one: stirring and mixing the above-mentioned PA610, glass fiber and glass microbead in a stirrer to obtain a uniformly dispersed mixture.

[0007] Step two: melting the mixture of step one and injecting it into the mold of the injection molding machine for injection molding.

[0008] Step three: cooling the mixture in the mold after pressure holding, and finally demolding to form an insulation terminal.

[0009] Specifically, in step two, the temperature of the mold during injection molding is 260-300 degrees Celsius.

[0010] Specifically, in step three, the pressure maintaining time is 65-75s.

[0011] Specifically, the manufactured insulation terminal at least comprises a sleeve body, the sleeve body is cylindrical, and an axial cavity is formed in the sleeve body.

[0012] Specifically, the mold is provided with a mold cavity corresponding to the shape of the insulation terminal, and the glue injection port on the mold is arranged on the inner side wall of the mold cavity.

[0013] Specifically, an external thread part is integrally arranged on the outer side wall of the upper part of the sleeve body, and an annular protruding ring is integrally arranged on the outer side wall of the middle part of the sleeve body, and the bottom surface of the annular protruding ring is provided with an annular groove.

[0014] Specifically, the axial cavity comprises an upper cavity section, a middle cavity section and a lower cavity section, an upper step surface is arranged between the middle cavity section and the upper cavity section, and a lower step surface is arranged between the middle cavity section and the lower cavity section.

[0015] The beneficial effects of the present application are as follows: The mixture for producing the insulation terminal and the preparation method of the insulation terminal of the present application, the insulation terminal manufactured by using the mixture, the surface of the insulation terminal is smoother, the roughness is uniform and consistent, there is no burr and no crack, the insulation effect of the insulation terminal is guaranteed, the mold is used for injection molding production, and secondary processing is not required after demolding, large-scale rapid production mode can be realized, production efficiency is improved, and the production cost of the insulation terminal is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a cross-sectional structure schematic diagram of the insulation terminal manufactured in the present application.

[0017] Figure 2 It is a mold cross-sectional structure schematic diagram of the insulation terminal in the present application. DETAILED DESCRIPTION

[0018] The present application will be further described below in combination with the drawings and examples.

[0019] A mixture for producing an insulation terminal, the mixture is composed of the following components in mass percentage: PA610 preferably content 75%; glass fiber preferably content 20%, glass bead preferably content 5%.

[0020] And in the actual production process, the total content of glass fiber and glass bead is 25±2% in mass percentage, so the content of PA610 fluctuates between 73%-77%.

[0021] A preparation method of an insulation terminal, comprising the following steps: Step one: the PA610, glass fiber and glass beads are mixed in a stirrer to obtain a uniformly dispersed mixture.

[0022] Step two: the mixture of step one is injected into the mold B of the injection molding machine after melting.

[0023] Step three: the mixture in the mold B is cooled after pressure holding, and finally the insulation terminal A is demolded.

[0024] The insulation terminal A made of the mixture by the preparation method makes the surface of the insulation terminal A smoother, the roughness is uniform and consistent, there is no burr and no crack, which ensures the insulation effect of the insulation terminal, and the injection molding is carried out by using the mold, so that secondary processing is not needed after demolding, large-scale rapid production mode can be realized, production efficiency is improved, and production cost of the insulation terminal is reduced.

[0025] In this embodiment, the temperature of the mold B during injection molding in step two is 280 degrees Celsius.

[0026] In this embodiment, the pressure holding time in step three is preferably 70s, wherein the pressure holding pressure is usually 30%-60% of the injection pressure, the mold B temperature is kept at 280 degrees Celsius while the pressure holding is performed for 70s, which can make the mixture fully fill the mold cavity, and ensure that the surface of the prepared insulation terminal remains smooth.

[0027] Reference Figure 1 As shown in the figure, the prepared insulation terminal A at least includes a sleeve body 1, the sleeve body 1 is cylindrical, and an axial cavity is formed in the sleeve body 1.

[0028] The sleeve body 1 is integrally provided with an external thread part 2 on the outer side wall of the upper part; the sleeve body 1 is integrally provided with an annular flange 3 on the outer side wall of the middle part, and the bottom surface of the annular flange 3 is provided with an annular groove 4.

[0029] The axial cavity includes an upper cavity section 101, a middle cavity section 102 and a lower cavity section 103, an upper step surface 5 is arranged between the middle cavity section 102 and the upper cavity section 101, and a lower step surface 6 is arranged between the middle cavity section 102 and the lower cavity section 103.

[0030] Reference Figure 2 As shown in the figure, the mold B is provided with a mold cavity B1 corresponding to the shape of the insulation terminal A, wherein the glue injection port B2 on the mold B is arranged on the inner side wall of the mold cavity B1; the prepared insulation terminal A will have a water port corresponding to the glue injection port B2, according to the specific structure of the insulation terminal A described above, therefore, arranging the water port on the inner side wall of the insulation terminal A can not affect the smoothness of the surface of the insulation terminal A, and effectively prevent the insulation terminal A from cracking and affecting the insulation.

[0031] The above are the preferred schemes of the present application, which show and describe the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Various changes and improvements can be made to the present application without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A mixture for producing an insulation terminal, characterized by: The mixture is composed of the following components in percentage by mass: PA610 content 73-77%; glass fiber content 18-22%; and glass microbead content 3-7%.

2. A mixture for producing an insulation terminal according to claim 1, characterized by: The total content of the glass fiber and the glass microbead is 25±2% by mass percentage.

3. A method of making an insulation terminal, characterized by: The method comprises the following steps: Step one: stirring and mixing the PA610, the glass fiber and the glass microbead as claimed in claim 1 or 2 in a stirrer to obtain a uniformly dispersed mixture; Step two: injecting the mixture of step one into a mold (B) of an injection molding machine after melting; Step three: cooling the mixture in the mold (B) after pressure maintaining and finally demolding to form an insulating terminal (A).

4. The method of claim 3, wherein: In step two, the temperature of the mold (B) during injection molding is 260-300 degrees Celsius.

5. The method of claim 3, wherein: In step three, the pressure maintaining time is 65-75 seconds.

6. The method of claim 3, wherein: The insulating terminal (A) comprises at least a sleeve (1) which is cylindrical and has an axial cavity formed inside.

7. A method of making an insulated terminal according to claim 6, wherein: The mold (B) is provided with a mold cavity (B1) corresponding to the shape of the insulating terminal (A), and a glue injection port (B2) on the mold (B) is arranged on the inner side wall of the mold cavity (B1).

8. The method of claim 6, wherein: An external thread part (2) is integrally arranged on the outer side wall of the upper part of the sleeve (1), and an annular protruding ring (3) is integrally arranged on the outer side wall of the middle part of the sleeve (1), and the bottom surface of the annular protruding ring (3) is provided with an annular groove (4).

9. A method of making an insulated terminal according to claim 8, wherein: The axial cavity comprises an upper cavity section (101), a middle cavity section (102) and a lower cavity section (103), an upper step surface (5) is arranged between the middle cavity section (102) and the upper cavity section (101), and a lower step surface (6) is arranged between the middle cavity section (102) and the lower cavity section (103).

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