Film coating mold and film coating mold assembly

Abstract

The utility model relates to the technical field of optical fiber coating, and provides a film coating die and a film coating die assembly, the film coating die comprises a die holder and adhesive tape die sets, a plate groove is arranged on the surface of one side of the die holder, the plate groove is used for accommodating a film coating plate, two adhesive tape grooves are respectively arranged on two opposite sides of the plate groove along the width direction of the die holder, and the adhesive tape grooves penetrate through the die holder along the length direction of the die holder; the bottom of the adhesive tape module is embedded in the adhesive tape groove, and the adhesive tape module comprises at least two adhesive tapes which are stacked and nested in the thickness direction of the die holder; wherein different layers of coating films are formed on the film coating plate by changing the number and / or thickness of the adhesive tapes in the adhesive tape module. The film coating mold can simulate the multi-layer coating process of the optical fiber coating, so that the coating performance can be accurately evaluated.

Description

TECHNICAL FIELD

[0001] The utility model relates to optical fiber coating technical field especially relates to a kind of coating die and coating die assembly. BACKGROUND

[0002] In the optical fiber manufacturing process, the coating of coating is the key link to ensure the stability and long-term reliability of optical fiber performance. Optical fiber coating not only plays a role in protecting optical fiber from external environment damage, but also enhances the mechanical strength of optical fiber, improves its bending resistance, wear resistance. The traditional optical fiber coating process usually involves the application of two layers of coating: the first coating layer (inner coating or one coating) is in direct contact with the surface of optical fiber bare fiber, and the main purpose is to provide tight adhesion and preliminary mechanical protection; The second coating layer (outer coating or two coating) is covered on the first coating layer as a further protective layer to enhance the durability and environmental adaptability of optical fiber.

[0003] However, the performance evaluation of current optical fiber coating faces major challenges. Since one coating and two coating play different functions on optical fiber, their performance requirements also have their own emphasis. For optical fiber, due to the difference in function, the performance test of single coating cannot effectively characterize the use effect of coating on optical fiber, and the cost of coating fiber drawing verification is huge and inefficient. The optical fiber drawing process is complex, involving multiple processes and precision equipment, and each verification consumes a large amount of resources and time, which seriously hinders the development and application process of optical fiber coating.

[0004] Therefore, it is necessary to provide a new technical solution to solve the above technical problems. INVENTION CONTENTS

[0005] The utility model aims at providing a kind of coating die and coating die assembly that can realize the simulation of optical fiber coating multilayer coating, to overcome the limitations of traditional test method, and then realize the comprehensive, accurate and rapid evaluation of coating performance.

[0006] The utility model provides a kind of coating die, including:

[0007] Die holder, one side surface of the die holder is equipped with plate groove, the plate groove is used to accommodate coating plate, the opposite sides of the plate groove along the width direction of the die holder are equipped with a rubber strip groove respectively, the rubber strip groove penetrates the die holder along the length direction of the die holder;

[0008] Rubber strip module, the bottom of the rubber strip module is embedded in the rubber strip groove, including at least two rubber strips stacked and nested along the thickness direction of the die holder;

[0009] Among them, the number and / or thickness of the rubber strips in the rubber strip module are changed to form different layers of coating on the coating plate.

[0010] The width of the at least two glue strips gradually decreases from the bottom of the glue strip groove to the top of the glue strip groove, so that the step surface is formed on the part of the glue strip module exposed outside the glue strip groove.

[0011] According to the film coating mold, the glue strip module comprises a first glue strip and a second glue strip, the first glue strip comprises a first clamping strip part and a first blocking strip part, the first clamping strip part is embedded in the glue strip groove, the first blocking strip part is located on the opposite sides of one end of the first clamping strip part away from the bottom of the glue strip groove, and the first clamping strip part is provided with a first clamping groove part on one side away from the bottom of the glue strip groove.

[0012] The second glue strip comprises a second clamping strip part and a second blocking strip part, the second clamping strip part is embedded in the first clamping groove part, and the second blocking strip part is located on one side of the first blocking strip part away from the bottom of the glue strip groove.

[0013] According to the film coating mold, the width of the first blocking strip part is greater than the opening width of the glue strip groove, and the first blocking strip part covers the embedded joint between the film coating plate and the side wall of the plate groove.

[0014] According to the film coating mold, the first clamping strip part and the first blocking strip part are integrally formed, and the second clamping strip part and the second blocking strip part are integrally formed.

[0015] According to the film coating mold, the second blocking strip part is recessed towards the edge of the plate groove on one side of the first blocking strip part.

[0016] According to the film coating mold, the depth of the plate groove is consistent with the thickness of the film coating plate.

[0017] According to the film coating mold, the mold base is provided with an end groove and an end boss at both ends in the length direction, the end groove and the end boss penetrate the mold base along the width direction of the mold base, and the end groove is located on the inner side of the end boss.

[0018] The end groove and the end boss of one end of the mold base are located on the side surface of the mold base away from the plate groove, and the end groove and the end boss of the other end of the mold base are located on the side surface of the mold base provided with the plate groove.

[0019] According to the film coating mold, the length of the plate groove is less than the length of the mold base, the plate groove is located on one side of the end groove away from the end boss on the same side, and the glue strip groove penetrates the end groove and the end boss.

[0020] The thickness of the end boss is less than the height of the side wall of the end groove away from the end boss.

[0021] The utility model also provides a kind of coating film mold assembly, including at least two as any one described above coating film mold, and at least two the coating film mold is spliced by the end groove and the end boss.

[0022] The above technical solution of the utility model has the following beneficial effects:

[0023] The coating film mold and the coating film mold assembly of the utility model, by setting the rubber strip groove on the opposite sides of the plate groove on the mold base, and using the rubber strip module capable of being stacked and nested, by changing the number and / or thickness of the rubber strip in the rubber strip module, different layers of coating film are formed on the coating film plate, so as to simulate the process of multi-layer coating of optical fiber coating, realize comprehensive, accurate and rapid evaluation of coating performance, compared with direct preparation of coating on optical fiber bare fiber for drawing verification, the coating film mold of the utility model not only can overcome the limitations of traditional test method, but also can significantly reduce research and development cost by simulating the actual coating conditions of optical fiber, accelerate the new product development and market application process of optical fiber coating. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the utility model or prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0025] Figure 1 The structure schematic view of the coating film mold provided by the embodiment of the utility model when preparing double-layer coating film is shown in the figure.

[0026] Figure 2 The structure schematic view of the mold base provided by the embodiment of the utility model is shown in the figure.

[0027] Figure 3 The structure schematic view of the first rubber strip provided by the embodiment of the utility model is shown in the figure.

[0028] Figure 4 The structure schematic view of the coating film mold provided by the embodiment of the utility model when preparing single-layer coating film is shown in the figure.

[0029] Figure 5 The structure schematic view of the coating film mold assembly provided by the embodiment of the utility model is shown in the figure.

[0030] REFERENCE SIGNS:

[0031] 1, die holder; 2, coating plate; 3, adhesive strip module; 101, end groove; 102, end boss; 103, adhesive strip groove; 104, plate groove; 31, first adhesive strip; 32, second adhesive strip; 311, first clamping strip part; 312, first blocking strip part; 313, first clamping groove part; 321, second clamping strip part; 322, second blocking strip part. DETAILED DESCRIPTION

[0032] To make the purpose, technical scheme and advantages of the present application clearer, the technical scheme of the present application will be described clearly and completely below in combination with the drawings in the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0033] Referring to Figures 1-2 The present application provides a coating die for forming one or more layers of coating on a coating plate 2, which comprises a die holder 1 and an adhesive strip module 3. The die holder 1 is provided with a plate groove 104 on one side surface, which is used for accommodating the coating plate 2. The plate groove 104 is provided with an adhesive strip groove 103 on each of the opposite sides along the width direction of the die holder 1, and the adhesive strip groove 103 penetrates through the die holder 1 along the length direction of the die holder 1. The bottom of the adhesive strip module 3 is embedded in the adhesive strip groove 103. The adhesive strip module 3 comprises at least two adhesive strips which are stacked and nested along the thickness direction of the die holder 1, and the adjacent two adhesive strips can be disassembled.

[0034] In the coating process, the number and / or thickness of the adhesive strips in the adhesive strip module 3 can be changed to form different layers of coating on the coating plate 2. Each adhesive strip in the adhesive strip module 3 can correspond to one layer of coating on the coating plate 2, that is, one adhesive strip embedded in the adhesive strip groove 103 can prepare one layer of coating on the coating plate 2. With the nested adhesive strips, the thickness of the adhesive strip module 3 also increases, so that the top of the adhesive strip module 3 forms a certain height difference with the coating layer on the coating plate 2, providing space for the preparation of the next layer of coating. In this way, multiple layers of coating can be prepared on the coating plate 2. In addition, the thickness of the nested adhesive strips can also be changed to change the thickness of the adhesive strip module 3, for example, without changing the number of adhesive strips, the thickness of the adhesive strip module 3 can be gradually increased by replacing adhesive strips of different thicknesses, so that multiple layers of coating can be prepared on the coating plate 2.

[0035] It should be noted that the number of adhesive strips or the thickness of adhesive strips in the adhesive strip module 3 can be changed to form different layers of coating on the coating plate 2. The number of adhesive strips in the adhesive strip module 3 can also be changed, and the thickness of the adhesive strips in the adhesive strip module 3 can also be changed, and this combination can be used to form different layers of coating on the coating plate 2.

[0036] Further, the widths of the at least two glue strips decrease from the bottom of the glue strip groove 103 to the top of the glue strip groove 103, so that the part of the glue strip module 3 exposed outside the glue strip groove 103 forms a stepped surface. On the one hand, this can ensure the stability of the nesting of the glue strip module 3, and on the other hand, the glue strip at the bottom can be designed to have a larger width, which can serve as a stress point and facilitate the lifting of the cured film.

[0037] As shown in FIGS. 1, 2 and 3, the glue strip module 3 is arranged in the glue strip groove 103 of the plate groove 104 of the coating film plate 2. Figure 1 and Figure 3 In an embodiment, the glue strip module 3 includes a first glue strip 31 and a second glue strip 32. The first glue strip 31 includes a first clamping strip portion 311 and a first blocking strip portion 312. The shape of the first clamping strip portion 311 matches the shape of the glue strip groove 103, and the first clamping strip portion 311 is embedded in the glue strip groove 103. The first blocking strip portion 312 is located on the opposite sides of the end of the first clamping strip portion 311 away from the bottom of the glue strip groove 103. The side of the first clamping strip portion 311 away from the bottom of the glue strip groove 103 is provided with a first clamping groove portion 313.

[0038] The second glue strip 32 includes a second clamping strip portion 321 and a second blocking strip portion 322. The second clamping strip portion 321 is embedded in the first clamping groove portion 313, and the second blocking strip portion 322 is located on the side of the first blocking strip portion 312 away from the bottom of the glue strip groove 103.

[0039] The materials of the first glue strip 31 and the second glue strip 32 are both silicone or rubber. The first clamping strip portion 311 and the first blocking strip portion 312 are integrally formed, and the second clamping strip portion 321 and the second blocking strip portion 322 are integrally formed.

[0040] The width of the first blocking strip portion 312 is greater than the opening width of the glue strip groove 103, and the first blocking strip portion 312 covers the joint between the coating film plate 2 and the side wall of the plate groove 104, so as to prevent paint from flowing into the joint between the coating film plate 2 and the side wall of the plate groove 104. The edge of the second blocking strip portion 322 near the side of the plate groove 104 is recessed to the edge of the first blocking strip portion 312 near the side of the plate groove 104.

[0041] In the embodiment, the cross-sectional shape of the glue strip groove 103 is semicircular, and the first clamping strip portion 311 is curled to form a hollow first clamping groove portion 313. The second glue strip 32 is T-shaped, the shape of the second clamping strip portion 321 matches the shape of the first clamping groove portion 313, and the second clamping strip portion 321 can be clamped into the first clamping groove portion 313.

[0042] Of course, in other embodiments, the shape of the second glue strip 32 is similar to that of the first glue strip 31, that is, the side of the second clamping strip portion 321 away from the glue strip groove 103 is provided with a second clamping groove portion for clamping a third glue strip. Subsequent glue strips can also be designed in a similar manner, which will not be described here.

[0043] The length of the first adhesive strip 31 and the second adhesive strip 32 is consistent with the length of the mold base 1, and the thickness of the first adhesive strip 31 and the second adhesive strip 32 ranges from 0.1 mm to 3 mm, for example, 0.1 mm, 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm or 3 mm.

[0044] The coating film plate 2 is embedded in the plate groove 104 in the mold base 1, the depth of the plate groove 104 is consistent with the thickness of the coating film plate 2, the length of the coating film plate 2 is consistent with the length of the plate groove 104, and the width of the coating film plate 2 is smaller than the width of the plate groove 104, for example, the width of the coating film plate 2 is 0.1 mm to 2 mm smaller than the width of the plate groove 104. The material of the coating film plate 2 is one or more of quartz glass, high borosilicate glass, acrylic, Teflon, silicone, aluminum alloy and stainless steel.

[0045] As shown in Figure 1 and Figure 2 Further, the mold base 1 is provided with an end groove 101 and an end boss 102 at both ends in the length direction, the end groove 101 and the end boss 102 penetrate the mold base 1 along the width direction of the mold base 1, the two end bosses 102 are respectively located at the edges of both ends of the mold base 1, and the end groove 101 is located at the inner side of the end boss 102. The end groove 101 and the end boss 102 at one end of the mold base 1 are located on the side surface of the mold base 1 away from the plate groove 104, and the end groove 101 and the end boss 102 at the other end of the mold base 1 are located on the side surface of the mold base 1 provided with the plate groove 104.

[0046] The length of the plate groove 104 is smaller than the length of the mold base 1, the plate groove 104 is located on the side of the same side away from the end boss 102, and the adhesive strip groove 103 penetrates the end groove 101 and the end boss 102. The adhesive strip module 3 penetrates the entire mold base 1 along the length direction of the mold base 1 through the end groove 101 and the end boss 102.

[0047] The thickness of the end boss 102 is smaller than the height of the side wall of the end groove 101 away from the end boss 102, which is beneficial to the splicing of multiple coating film molds.

[0048] The coating film mold of the utility model can realize coating film on different base layers by selecting coating film plates 2 of different materials.

[0049] The coating film mold of the utility model also realizes one or more times of coating film of one coating material and multiple times of coating film of multiple coating materials through the matching of the first adhesive strip 31 and the second adhesive strip 32. In addition, the thickness control of one or more times of coating film can be realized by selecting the first adhesive strip 31 and the second adhesive strip 32 of different thicknesses. Furthermore, the utility model can realize three or more times of coating film by selecting the second adhesive strip 32 of thicker and thicker.

[0050] Specifically, asFigure 1 As shown, the coating mold of the present invention can achieve double-layer coating. During the coating process, the coating plate 2 is first embedded in the plate groove 104 of the mold base 1. The material of the coating plate 2 can be quartz glass; then the first clip portion 311 of the first rubber strip 31 is embedded in the rubber strip groove 103, and the first stop portion 312 of the first rubber strip 31 covers the caulking between the coating plate 2 and the plate groove 104, and a coating with a thickness equivalent to the first stop portion 312 is prepared on the coating plate 2 using a coating; then the second clip portion 321 of the second rubber strip 32 is embedded in the first clip groove portion 313, and the same coating or different coating is used to prepare a coating with a thickness equivalent to the second stop portion 322 of the second rubber strip 32 on the coating plate 2, thereby achieving the preparation of a double-layer coating.

[0051] The thickness of the film-coated plate 2 and the depth of the plate groove 104 are both 3 mm. The length of the film-coated plate 2 and the length of the plate groove 104 are both 100 mm. The width of the film-coated plate 2 is 0.5 mm smaller than the width of the plate groove 104. The length of the first rubber strip 31 and the length of the mold base 1 are both 120 mm, and the thickness of the first rubber strip 31 is 1 mm. The length of the second rubber strip 32 is the same as that of the first rubber strip 31, and the thickness of the second rubber strip 32 is 1.5 mm.

[0052] The first rubber strip 31 and the second rubber strip 32 are both made of silicone.

[0053] It should be noted that the coating method of three layers and above using the coating mold of the present invention is similar to this, that is, the second rubber strips 32 can be continuously nested, or the second rubber strips 32 of different thicknesses can be replaced in sequence, which will not be repeated here.

[0054] like Figure 4 As shown, the coating mold of the present invention can also achieve single-layer coating. During the coating process, the coating plate 2 is first embedded in the plate groove 104 of the mold base 1. The material of the coating plate 2 can be quartz glass; then the first clip portion 311 of the first rubber strip 31 is embedded in the rubber strip groove 103, and the first stop portion 312 of the first rubber strip 31 covers the caulking between the coating plate 2 and the plate groove 104. A coating is used to prepare a coating layer with a thickness equivalent to the first stop portion 312 on the coating plate 2, thereby achieving the preparation of a single-layer coating.

[0055] The thickness of the film-coated plate 2 and the depth of the plate groove 104 are both 3 mm. The length of the film-coated plate 2 and the length of the plate groove 104 are both 100 mm. The width of the film-coated plate 2 is 0.5 mm smaller than the width of the plate groove 104. The length of the first rubber strip 31 and the length of the mold base 1 are both 120 mm. The thickness of the first rubber strip 31 is 1 mm. The material of the first rubber strip 31 is silicone.

[0056] The utility model also provides a kind of film coating mould assembly, as Figure 5 As shown, comprising at least two film coating moulds as described above, at least two film coating moulds are spliced by end groove 101 and end boss 102, and the adhesive strip module 3 covers the end groove 101 and the end boss 102 connection position on the adjacent two mold bases 1. After splicing at least two film coating moulds, batch coating of multiple film coating plates 2 can be realized, and the coating efficiency is improved.

[0057] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A film coating mold characterized by, The application relates to a coating mold, which comprises the following parts: a mold base, one side surface of the mold base is provided with a plate groove used for accommodating a coating plate, the plate groove is provided with a rubber strip groove on each of opposite sides in the width direction of the mold base, and the rubber strip groove penetrates the mold base in the length direction of the mold base; a rubber strip module, the bottom of the rubber strip module is embedded in the rubber strip groove, and the rubber strip module comprises at least two rubber strips which are stacked and nested in the thickness direction of the mold base; wherein the number and / or thickness of the rubber strips in the rubber strip module are changed to form different layers of coating on the coating plate.

2. The coating film mold according to claim 1, wherein The width of the at least two rubber strips gradually decreases from the bottom of the rubber strip groove to the top of the rubber strip groove, so that the stepped surface of the rubber strip module is formed outside the rubber strip groove.

3. The coating film mold according to claim 1, wherein The rubber strip module comprises a first rubber strip and a second rubber strip, the first rubber strip comprises a first clamping strip part and a first blocking strip part, the first clamping strip part is embedded in the rubber strip groove, the first blocking strip part is located on the opposite sides of one end of the first clamping strip part away from the bottom of the rubber strip groove, and the first clamping strip part is provided with a first clamping groove part on one side away from the bottom of the rubber strip groove; the second rubber strip comprises a second clamping strip part and a second blocking strip part, the second clamping strip part is embedded in the first clamping groove part, and the second blocking strip part is located on one side of the first blocking strip part away from the bottom of the rubber strip groove.

4. The coating film mold according to claim 3, wherein The width of the first blocking strip part is greater than the opening width of the rubber strip groove, and the first blocking strip part covers the embedded joint between the coating plate and the side wall of the plate groove.

5. The coating film mold according to claim 3, wherein The first clamping strip part and the first blocking strip part are integrally formed, and the second clamping strip part and the second blocking strip part are integrally formed.

6. The coating film mold according to claim 3, wherein The edge of the second blocking strip part close to the plate groove is recessed in the edge of the first blocking strip part close to the plate groove.

7. The coating film mold according to any one of claims 1 to 6, wherein The mold base is provided with an end groove and an end boss at each end in the length direction, the end groove and the end boss penetrate the mold base in the width direction of the mold base, and the end groove is located on the inner side of the end boss; wherein the end groove and the end boss at one end of the mold base are located on the side surface of the mold base away from the plate groove, and the end groove and the end boss at the other end of the mold base are located on the side surface of the mold base provided with the plate groove.

8. The coating film mold according to claim 7, wherein The length of the plate groove is less than the length of the mold base, the plate groove is located on the side of the same end away from the end boss, and the rubber strip groove penetrates the end groove and the end boss.

9. The coating film mold according to claim 7, wherein The thickness of the end boss is less than the height of the side wall of the end groove away from the end boss.

10. A film coating die assembly characterized by, The application further relates to at least two coating molds as claimed in any one of claims 7-9, and the at least two coating molds are spliced through the end groove and the end boss.

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