A molding die for a single-sided insertion type all-through luminous optical fiber tube

Abstract

The present invention discloses a forming die for a unilateral insertion type all-through luminous optical fiber tube, which includes a front die. The front die is radially provided with a first forming groove and a first forming hole, and the first forming groove and the first forming hole are communicated with each other; a rear die, which is aligned with the front die. The rear die is radially provided with a second forming groove and a second forming hole. The second forming groove and the second forming hole are independent of each other and not communicated with each other. The second forming groove corresponds to the first forming groove, and the second forming hole corresponds to the first forming hole; a core, which is disposed through the first and second forming holes; the first molten plastic is extruded from the second forming hole of the rear die to the first forming hole of the front die, and an optical fiber duct is formed between the first forming hole and the core; the second molten plastic is extruded from the second forming groove of the rear die to the first forming groove of the front die to form a skirt, and the skirt is integrally connected with the optical fiber duct at the position where the first forming groove and the first forming hole are communicated.

Description

Technical Field

[0001] The present invention relates to a mold, and particularly to a molding mold for a single-sided insertion type all-through luminous optical fiber tube. Background Art

[0002] The advantage of an optical fiber is that it conducts light but not electricity. With the continuous development of production technology, the application field of optical fibers has expanded from the original simple decorative lighting industry to the use in electromechanical products. With the rapid development of the automotive industry, the advantage of optical fibers conducting light but not electricity is further reflected, and the requirements for the application of optical fibers in automobiles are getting higher and higher. The optical fiber application should be both beautiful and safe. However, traditional optical fibers are all round, and it is often difficult to fix such optical fibers in an automobile. Therefore, a single-sided insertion type all-through luminous optical fiber tube is needed, and the single-sided insertion type all-through luminous optical fiber tube includes an integrally formed optical fiber duct and a skirt.

[0003] Therefore, to produce the above-mentioned luminous optical fiber tube, the optical fiber duct and the skirt need to be melted into one body, and the skirt is longitudinally welded on the optical fiber duct. The currently used raw material is FEP (fluorinated ethylene propylene), which belongs to a high molecular material. It has strong inertness and there is no solvent to dissolve it. It can only be melted and bonded by a hot melting method. However, the method of applying secondary force obviously doesn't work. The requirement of products in the market is a length of 100 m, and it can only be continuously formed by an extrusion method. Summary of the Invention

[0004] The purpose of the present invention is to provide a molding mold for a single-sided insertion type all-through luminous optical fiber tube, which can cleverly melt and integrally form the optical fiber duct and the skirt, meeting the needs of the market.

[0005] To achieve the above purpose, the present invention is realized by the following technical solutions:

[0006] A molding mold for a single-sided insertion type all-through luminous optical fiber tube, characterized in that it includes:

[0007] A front mold, the front mold is radially provided with a first molding groove and a first molding hole, and the first molding groove and the first molding hole are communicated;

[0008] A rear mold, which is combined with the front mold. The rear mold is radially provided with a second molding groove and a second molding hole. The second molding groove and the second molding hole are independent of each other and not communicated. The second molding groove corresponds to the first molding groove, and the second molding hole corresponds to the first molding hole;

[0009] A core, which is penetrated through the first and second molding holes;

[0010] The first molten plastic is extruded from the second molding hole of the rear mold to the first molding hole of the front mold, and an optical fiber duct is formed between the first molding hole and the core;

[0011] The second molten plastic is extruded from the second molding groove of the rear mold to the first molding groove of the front mold to form a skirt, and the skirt is integrally connected to the optical fiber duct at the position where the first molding groove and the first molding hole communicate with each other.

[0012] The front mold is provided with a boss, and the rear mold is provided with a positioning groove. The boss corresponds to the positioning groove so that the front mold and the rear mold are aligned.

[0013] The outlet profile of the second molding groove and the outlet profile of the second molding hole are arranged in the positioning groove of the rear mold.

[0014] It further includes a first sleeve and a second sleeve. The first sleeve is arranged on the rear mold, and the axial direction of the first sleeve is parallel to the conveying direction of the first hot-melt plastic. The second sleeve is arranged on the rear mold, and the axial direction of the second sleeve is perpendicular to the axial direction of the first sleeve.

[0015] The first sleeve is provided with a first hot runner. The core passes through the first hot runner, the second molding hole and the first molding hole in sequence, and the cavity formed between the first hot runner, the second molding hole and the first molding hole and the core is a first molding cavity. The first molten plastic is injected into the first molding cavity.

[0016] The second sleeve is provided with a second hot runner for injecting the second hot-melt plastic, and the second hot runner is communicated with the second molding groove.

[0017] The first molding groove includes a square groove and a hole groove. The two ends of the square groove are respectively communicated with the hole groove and the first molding hole.

[0018] The first molten plastic and the second molten plastic are FEP in a molten state.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] The first molten plastic is extruded from the second molding hole of the rear mold to the first molding hole of the front mold, and an optical fiber duct is formed between the first molding hole and the core. The second molten plastic is extruded from the second molding groove of the rear mold to the first molding groove of the front mold to form a skirt, and the skirt is integrally connected to the optical fiber duct at the position where the first molding groove and the first molding hole communicate with each other.

[0021] Since the first sleeve and the second sleeve connected to the rear mold are perpendicular to each other, the space of the molten plastic injection device is reasonably allocated, saving the floor area. Description of the Drawings

[0022] Figure 1 It is a schematic structural diagram of a single-sided insertion type all-through luminous optical fiber tube of the present invention.

[0023] Figure 2 Schematic structural diagram of a molding die for a single-sided insertion type all-through light-emitting optical fiber tube according to the present invention;

[0024] Figure 3 Structural diagram of the front mold and the core;

[0025] Figure 4 Schematic structural diagram of the front mold;

[0026] Figure 5 Another schematic structural diagram of the front mold;

[0027] Figure 6 Stereogram of the front mold and the core;

[0028] Figure 7 Schematic structural diagram of the rear mold. Specific implementation manner

[0029] The present invention will be further described below in conjunction with the accompanying drawings by elaborating in detail a preferred specific embodiment.

[0030] As Figure 1 shown, a single-sided insertion type all-through light-emitting optical fiber tube includes: an optical fiber duct 1 and a skirt 2. The skirt 1 is connected to the wall surface of the optical fiber duct main body along a direction parallel to the optical fiber duct main body. During application, the skirt 2 is embedded in a corresponding socket.

[0031] As Figure 2 、 3 、6, 7 shown, a molding die for a single-sided insertion type all-through light-emitting optical fiber tube includes: a front mold 3, the front mold 3 is radially provided with a first molding groove 31 and a first molding hole 32, and the first molding groove 31 and the first molding hole 32 are communicated; a rear mold 4, which is mated with the front mold 3, the rear mold 4 is radially provided with a second molding groove 41 and a second molding hole 42, the second molding groove 41 and the second molding hole 42 are independent of each other and not communicated with each other, the second molding groove 41 corresponds to the first molding groove 31, and the second molding hole 42 corresponds to the first molding hole 32 (see Figure 7 ); a core 5, which is penetrated through the first and second molding holes; the first molten plastic is extruded from the second molding hole 42 of the rear mold 4 to the first molding hole 32 of the front mold 3, and an optical fiber duct 1 is formed between the first molding hole 32 and the core 5; the second molten plastic is extruded from the second molding groove 41 of the rear mold 4 to the first molding groove 31 of the front mold 3 to form a skirt 2, and the skirt 2 is integrated with the optical fiber duct at the position where the first molding groove 31 and the first molding hole 32 are communicated, so as to obtain a single-sided insertion type all-through light-emitting optical fiber tube.

[0032] The front mold 3 is provided with a boss 33, and the rear mold 4 is provided with a positioning groove 43. The boss 33 corresponds to the positioning groove 43, so that the front mold 3 and the rear mold 4 are matched. Furthermore, the front mold 3 is correspondingly provided with a plurality of bolt holes, and the rear mold 4 is also provided with a plurality of bolt holes. After the front mold 3 and the rear mold 4 are matched, the front and rear molds are connected and fixed by passing bolts through the bolt holes.

[0033] The outlet profile of the second molding groove 41 and the outlet profile of the second molding hole are arranged in the positioning groove 43 of the rear mold.

[0034] In a specific embodiment, the molding mold also includes a first sleeve 6 and a second sleeve 7. The first sleeve 6 is arranged on the rear mold 4, and the axial direction of the first sleeve 6 is parallel to the conveying direction of the first hot-melt plastic. The second sleeve 7 is arranged on the rear mold 4, and the axial direction of the second sleeve 7 is perpendicular to the axial direction of the first sleeve 6.

[0035] The first sleeve 6 is provided with a first hot runner, the core 5 passes through the first hot runner, the second molding hole 42 and the first molding hole 32 in sequence, and the cavity formed between the first hot runner, the second molding hole 42 and the first molding hole 32 and the core 5 is the first molding cavity, and the first molten plastic is injected into the first molding cavity.

[0036] The second sleeve 7 is provided with a second hot runner for injecting a second hot melt plastic, and the second hot runner is communicated with the second molding groove 41 .

[0037] See also Figure 4 It should be noted that the first molding groove 31 includes a square groove 311 and a hole groove 312. The first molding groove 31 is arranged through the front mold 3. The two ends of the square groove 311 are respectively connected with the hole groove 312 and the first molding hole 32; see Figure 5 , or the first molding groove 31 includes a square groove 311, a hole groove 312 and a transition groove 313, wherein the square groove 311 and the hole groove 312 are penetrated through the front mold and connected to the second molding groove, the shape formed by the square groove 311 and the hole groove 312 is adapted to the shape of the second molding groove 41, the transition groove 313 is arranged on the front end surface of the front mold 3 and is opened inwardly, the transition groove 313 does not pass through the front mold 3, the square groove is connected to the first molding hole through the transition groove, and the first molten plastic and the second molten plastic are FEP in a molten state.

[0038] When the present invention is applied, the first sleeve and the second sleeve of the mold are respectively connected to an injection device. The first molten plastic is extruded from the second forming hole 42 of the rear mold 4 to the first forming hole 32 of the front mold 3, and an optical fiber duct 1 is formed between the first forming hole 32 and the core 5. The second molten plastic is extruded from the second forming groove 41 of the rear mold 4 to the first forming groove 31 of the front mold 3 to form a skirt 2. The skirt 2 is integrally connected with the optical fiber duct at the position where the first forming groove 31 and the first forming hole 32 communicate, and a single-sided insertion type all-through luminous optical fiber tube is obtained.

[0039] In summary, the forming mold for a single-sided insertion type all-through luminous optical fiber tube of the present invention ingeniously melts and integrally forms the optical fiber duct and the skirt, meeting the market demand.

[0040] Although the content of the present invention has been described in detail through the above preferred embodiments, it should be recognized that the above description should not be considered as a limitation to the present invention. After those skilled in the art have read the above content, various modifications and substitutions to the present invention will be obvious. Therefore, the protection scope of the present invention should be defined by the appended claims.

Claims

1. A forming mold for a unilateral insertion type all - body light - emitting optical fiber tube, characterized in that, Comprising: A front mold, which is radially provided with a first forming groove and a first forming hole, and the first forming groove and the first forming hole communicate with each other; A rear mold, which is aligned with the front mold. The rear mold is radially provided with a second forming groove and a second forming hole. The second forming groove and the second forming hole are independent of each other and do not communicate with each other. The second forming groove corresponds to the first forming groove, and the second forming hole corresponds to the first forming hole; A core, which is disposed through the first and second forming holes; The first molten plastic is extruded from the second forming hole of the rear mold to the first forming hole of the front mold, and an optical fiber duct is formed between the first forming hole and the core; The second molten plastic is extruded from the second forming groove of the rear mold to the first forming groove of the front mold to form a skirt. The skirt is integrally connected with the optical fiber duct at the position where the first forming groove and the first forming hole communicate. The front mold is provided with a boss, and the rear mold is provided with a positioning groove. The boss corresponds to the positioning groove, so that the front mold and the rear mold are aligned; The molding die further includes a first sleeve and a second sleeve. The first sleeve is disposed on the rear mold, and the axial direction of the first sleeve is parallel to the conveying direction of the first hot melt plastic. The second sleeve is disposed on the rear mold, and the axial direction of the second sleeve is perpendicular to the axial direction of the first sleeve.

2. The molding die for the unilateral insertion type all-through light-emitting optical fiber tube according to claim 1, characterized in that, The outlet surface of the second forming groove and the outlet surface of the second forming hole are disposed in the positioning groove of the rear mold.

3. The forming die for the single-sided insertion type all-through luminous optical fiber tube according to claim 1, characterized in that, The first sleeve is provided with a first hot runner. The core sequentially passes through the first hot runner, the second forming hole and the first forming hole. The cavity formed between the first hot runner, the second forming hole and the first forming hole and the core is a first forming cavity, and the first molten plastic is injected into the first forming cavity.

4. The forming die for the unilateral insertion type all-round light-emitting optical fiber tube according to claim 1, characterized in that, The second sleeve is provided with a second hot runner for injecting the second hot melt plastic, and the second hot runner communicates with the second forming groove.

5. The molding die for the unilateral insertion type all-through light-emitting optical fiber tube according to claim 1, characterized in that, The first forming groove includes a square groove and a hole groove. The two ends of the square groove communicate with the hole groove and the first forming hole respectively.

6. The molding die for the unilateral insertion type all-round light-emitting optical fiber tube according to claim 1, wherein, The first molten plastic and the second molten plastic are FEP in a molten state.

Images