A signal cable integrally molding die and a manufacturing process thereof

Abstract

The application relates to the field of cable mold structures, in particular to a signal cable integral forming mold and a manufacturing process thereof, which comprises an outer mold and an inner mold, and seven mounting blocks in an annular array are further clamped and fixed on the inner wall of the inner mold; each small cable core is accurately guided into a signal cable forming cavity through small through holes on the seven mounting blocks, cooperates with the accurately positioned large cable core, and the corresponding manufacturing process is adopted, so that the accurate forming of the signal cable is realized.

Description

Technical Field

[0001] This invention relates to the field of cable mold structure, and in particular to an integral forming mold for signal cables and its manufacturing process. Background Technology

[0002] A signal cable is a tool for transmitting signals. Generally, signal cables transmit very small signals. To prevent interference, signal cables have an outer shielding layer, which is the shielding layer covering the conductor. This shielding layer is typically made of conductive cloth, woven copper mesh, or copper foil (aluminum). The shielding layer needs to be grounded so that external interference signals can be conducted to the ground, preventing interference signals from entering the inner conductor and reducing signal loss during transmission.

[0003] A signal cable is provided, comprising a cable sheath, a large cable core, and seven small cable cores. The cable sheath has a large chamber and seven small chambers that are disposed throughout it. The large cable core is disposed in the large chamber and is coaxially disposed in the center of the cable sheath. Each of the seven small chambers contains a small cable core, and the seven small chambers are arranged in a circular array around the axis of the large chamber.

[0004] Existing molding dies cannot achieve precise production of this signal cable. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an integral forming mold for signal cables and its manufacturing process, thereby solving the problem that existing forming molds cannot achieve precise production of the signal cables.

[0006] To solve the above-mentioned technical problems, the technical solution of the present invention is: an integral forming mold for signal cables, the innovation of which is: it includes an outer mold and an inner mold; The outer mold has a cylindrical structure. A signal cable forming cavity is formed at the center of one end of the outer mold along the axial direction. A conical guide cavity is formed at the center of the other end of the outer mold along the axial direction, and the conical guide cavity is connected to the signal cable forming cavity. The inner mold is also cylindrical in shape. The inner mold and the outer mold are coaxially arranged. A large through hole is opened in the center of the extruded inner film along the axial direction. One side of the inner mold is engaged with the side of the outer mold away from the signal cable forming cavity. The large through hole is connected to the conical guide cavity. The inner wall of the large through hole of the inner mold is also provided with multiple snap-fit ​​grooves arranged in a circular array with the axis of the inner mold as the center. Each snap-fit ​​groove is fixed with a mounting block, and each mounting block is provided with a small through hole that is inclined towards the signal cable forming cavity. One end of the small cable core enters the large through hole from the other side of the inner mold, passes through the small through hole, enters the conical guide cavity, and finally extends out of the outer mold from the signal cable forming cavity. Each small through hole is installed with one small cable core in the same way.

[0007] Furthermore, the snap-fit ​​groove has seven slots, and an annular snap-fit ​​groove is provided on the side of the inner wall of the conical guide cavity away from the signal cable forming cavity, which is coaxially arranged with the conical guide cavity. The inner mold is also provided on the side near the outer mold, which is just accommodated in the annular snap-fit ​​groove.

[0008] Furthermore, the mounting block includes a snap-fit ​​portion and a connecting portion, the snap-fit ​​portion being fitted to the snap-fit ​​groove, and the connecting portion having a small through hole.

[0009] Furthermore, its manufacturing process includes the following steps: S1: Set one end of the small cable core as the initial end, and pass the initial end through the large through hole of the inner mold and the small through hole on a mounting block in sequence. The length of the small cable core extending out of the small through hole is greater than the sum of the lengths of the signal cable forming cavity and the conical guide cavity. S2: Repeat S1 until all 7 small cable cores are installed; S3: Connect the inner mold and the outer mold so that the initial ends of the 7 small cable cores pass through the conical guide cavity and the signal cable forming cavity in sequence; S4: Set one end of the large cable core as the starting terminal, and pass the starting terminal through the large through hole, the conical guide cavity and the signal cable forming cavity in sequence. At this time, in the signal cable forming cavity, the large cable core is coaxially set at the center of the signal cable forming cavity, and 7 small cable cores are arranged in a ring array around the axis of the large cable core. The small cable cores, the large cable core and the signal cable forming cavity do not contact each other. S5: Inject molding material from the outside of the large through hole of the inner mold into the large through hole, the conical guide cavity and the signal cable forming cavity; S6: Pull the initial end of the small cable core and the starting end of the large cable core away from the inner mold to form the signal cable.

[0010] The advantages of this invention are: In this invention, each small cable core is precisely guided into the signal cable forming cavity through small through holes on seven mounting blocks. Combined with a precisely positioned large cable core and the use of appropriate manufacturing processes, the precise forming of the signal cable is achieved. Attached Figure Description

[0011] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0012] Figure 1 This is a cross-sectional view of the outer mold of the present invention.

[0013] Figure 2 This is a cross-sectional view of the inner mold of the present invention.

[0014] Figure 3 This is a top view of the inner mold of the present invention.

[0015] Figure 4 This is a schematic diagram of the mounting block structure of the present invention.

[0016] Figure 5 This is a side view of the mounting block of the present invention.

[0017] Figure 6 This is a schematic diagram of the inner and outer mold installation structure of the present invention. Detailed Implementation

[0018] like Figures 1 to 5 The illustrated signal cable integral molding mold includes an outer mold 1 and an inner mold 2.

[0019] The outer mold 1 has a cylindrical structure. A signal cable forming cavity 3 is opened at the center of one end of the outer mold 1 along the axial direction. A conical guide cavity 4 is opened at the center of the other end of the outer mold 1 along the axial direction. The conical guide cavity 4 is connected to the signal cable forming cavity 3. The inner diameter of the conical guide cavity 4 decreases from the side away from the signal cable forming cavity 3 to the side closer to the signal cable forming cavity 3.

[0020] The inner mold 2 is also cylindrical. The inner mold 2 is coaxially arranged with the outer mold 1. A large through hole 5 is opened in the center of the extruded inner film along the axial direction. One side of the inner mold 2 is engaged with the side of the outer mold 1 away from the signal cable forming cavity 3. The large through hole 5 is connected to the conical guide cavity 4. The inner wall of the side of the large through hole 5 away from the outer mold 1 has an enlarged diameter conical surface.

[0021] The inner wall of the large through hole 5 of the inner mold 2 is also provided with multiple snap-fit ​​grooves 6 arranged in a ring array with the axis of the inner mold 2 as the center. Each snap-fit ​​groove 6 is fixed with a mounting block 7. Each mounting block 7 is provided with a small through hole 8 that is inclined towards the signal cable forming cavity 3. One end of the small cable core enters the large through hole 5 from the other side of the inner mold 2, passes through the small through hole 8, and then enters the conical guide cavity 4. Finally, it extends out of the outer mold 1 from the signal cable forming cavity 3. Each small through hole 8 is installed with a small cable core in the same way.

[0022] The snap-fit ​​groove 6 has seven rectangular slots, and an annular snap-fit ​​groove 9 is provided on the inner wall of the conical guide cavity 4 away from the signal cable forming cavity 3, which is coaxial with the conical guide cavity 4. The inner mold 2 is also provided on the side close to the outer mold 1, which is just accommodated in the annular snap-fit ​​groove 9.

[0023] The mounting block 7 includes a snap-fit ​​part 71 and a connecting part 72. The snap-fit ​​part 71 is fitted into the snap-fit ​​groove 6, and a small through hole 8 is provided on the connecting part 72.

[0024] The mounting block 7 is a single-piece structure. The block structure has a first inclined surface 711, a second inclined surface 712, a third vertical surface 713, and a fourth inclined surface 714 connected end to end in sequence. The length of the fourth inclined surface 714 is less than the length of the second inclined surface 712, the length of the second inclined surface 712 is less than the length of the third vertical surface 713, the length of the third vertical surface 713 is less than the length of the fourth inclined surface 714, and the length of the fourth inclined surface 714 is not greater than the height of the inner wall of the inner mold 2.

[0025] A groove 715 is formed inward from the middle of the second inclined surface 712 on the block structure. The side of the groove 715 closest to the first inclined surface 711 is the fifth inclined surface, the side of the groove 715 closest to the third vertical surface 713 is the sixth vertical surface, and the bottom of the groove 715 is the seventh horizontal surface. The straight distance between the first inclined surface 711 and the fifth inclined surface is equal to the straight distance between the second vertical surface and the sixth vertical surface and is equal to the width of the snap-fit ​​groove 6.

[0026] The portion of the block structure from the groove 715 to the first inclined surface 711 is the snap-fit ​​portion, and the portion from the groove 715 to the third vertical surface 713 is the connecting portion.

[0027] A small through hole 8 is formed on the block between the sixth vertical plane and the third vertical plane 713, and the axis of the small through hole 8 is parallel to the third vertical plane 713.

[0028] A manufacturing process for an integral molding die for a signal cable specifically includes the following steps: S1: Set one end of the small cable core as the initial end, and pass the initial end through the large through hole 5 of the inner mold 2 and the small through hole 8 on a mounting block 7 in sequence. The length of the small cable core extending out of the small through hole 8 is greater than the sum of the lengths of the signal cable forming cavity 3 and the conical guide cavity 4.

[0029] S2: Repeat S1 until all 7 small cable cores are installed.

[0030] S3: Connect the inner mold 2 to the outer mold 1, as follows: Figure 6 As shown, the initial ends of the seven small cable cores pass sequentially through the conical guide cavity 4 and the signal cable forming cavity 3.

[0031] S4: Set one end of the large cable core as the starting terminal, and pass the starting terminal through the large through hole 5, the conical guide cavity 4 and the signal cable forming cavity 3 in sequence. At this time, in the signal cable forming cavity 3, the large cable core is coaxially set at the center of the signal cable forming cavity 3, and 7 small cable cores are arranged in a ring array around the axis of the large cable core. The small cable cores, the large cable core and the signal cable forming cavity 3 do not contact each other.

[0032] S5: Molding material is injected from the outside of the large through hole 5 of the inner mold 2 into the large through hole 5, the conical guide cavity 4 and the signal cable forming cavity 3. The molding material is PVC or PE or other cable sheath material.

[0033] S6: Pull the initial end of the small cable core and the starting end of the large cable core away from the inner mold 2 to form the signal cable.

[0034] In this invention, each small cable core is precisely guided into the signal cable forming cavity 3 through the small through holes 8 on the 7 mounting blocks 7. Combined with the precisely positioned large cable core and the corresponding manufacturing process, the precise forming of the signal cable is achieved.

[0035] Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to this invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A signal cable integral forming mold, characterized in that: Includes outer mold and inner mold; The outer mold has a cylindrical structure. A signal cable forming cavity is formed at the center of one end of the outer mold along the axial direction. A conical guide cavity is formed at the center of the other end of the outer mold along the axial direction, and the conical guide cavity is connected to the signal cable forming cavity. The inner mold is also cylindrical in shape. The inner mold and the outer mold are coaxially arranged. A large through hole is opened in the center of the extruded inner film along the axial direction. One side of the inner mold is engaged with the side of the outer mold away from the signal cable forming cavity. The large through hole is connected to the conical guide cavity. The inner wall of the large through hole of the inner mold is also provided with seven snap-fit ​​grooves arranged in a ring array with the axis of the inner mold as the center. Each snap-fit ​​groove is fixed with a mounting block, and each mounting block is provided with a small through hole that is inclined towards the signal cable forming cavity. One end of the small cable core enters the large through hole from the other side of the inner mold, passes through the small through hole, enters the conical guide cavity, and finally extends out of the outer mold from the signal cable forming cavity. Each small through hole is installed with one small cable core in the same way. On the inner wall of the conical guide cavity, away from the signal cable forming cavity, there is an annular snap-fit ​​groove coaxially arranged with the conical guide cavity. On the side of the inner mold closer to the outer mold, there is also an annular snap-fit ​​protrusion that is just accommodated in the annular snap-fit ​​groove. The mounting block is a single-piece structure. The block structure has a first inclined surface, a second inclined surface, a third vertical surface, and a fourth inclined surface that are connected end to end in sequence. The length of the fourth inclined surface is less than the length of the second inclined surface, the length of the second inclined surface is less than the length of the third vertical surface, the length of the third vertical surface is less than the length of the fourth inclined surface, and the length of the fourth inclined surface is not greater than the height of the inner wall of the inner mold. A groove is formed inward in the middle of the second inclined surface on the block structure. The side of the groove closest to the first inclined surface is the fifth inclined surface, and the side of the groove closest to the third vertical surface is the sixth vertical surface. The bottom of the groove is the seventh horizontal surface, and the straight distance between the first inclined surface and the fifth inclined surface is equal to the straight distance between the second vertical surface and the sixth vertical surface and is equal to the width of the snap-fit ​​groove. The block structure is divided into a snap-fit ​​part from the groove to the first inclined surface and a connecting part from the groove to the third vertical surface. The snap-fit ​​part is fitted to the snap-fit ​​groove, and a small through hole is opened on the connecting part. A small through hole is formed on the block between the sixth and third vertical planes, and the axis of the small through hole is parallel to the third vertical plane.

2. The signal cable integral forming mold according to claim 1, characterized in that: Its manufacturing process includes the following steps: S1: Set one end of the small cable core as the initial end, and pass the initial end through the large through hole of the inner mold and the small through hole on a mounting block in sequence. The length of the small cable core extending out of the small through hole is greater than the sum of the lengths of the signal cable forming cavity and the conical guide cavity. S2: Repeat S1 until all 7 small cable cores are installed; S3: Connect the inner mold and the outer mold so that the initial ends of the 7 small cable cores pass through the conical guide cavity and the signal cable forming cavity in sequence; S4: Set one end of the large cable core as the starting terminal, and pass the starting terminal through the large through hole, the conical guide cavity and the signal cable forming cavity in sequence. At this time, in the signal cable forming cavity, the large cable core is coaxially set at the center of the signal cable forming cavity, and 7 small cable cores are arranged in a ring array around the axis of the large cable core. The small cable cores, the large cable core and the signal cable forming cavity do not contact each other. S5: Inject molding material from the outside of the large through hole of the inner mold into the large through hole, the conical guide cavity and the signal cable forming cavity; S6: Pull the initial end of the small cable core and the starting end of the large cable core away from the inner mold to form the signal cable.

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