Gluing device for glass fiber sleeve and gluing process

Abstract

The present application relates to the field of rubber-coated glass fiber sleeve processing, and particularly relates to a rubber-coated glass fiber sleeve coating device and a rubber-coating process, which comprises a top-opened glue pool, a rubber stripping device is arranged above the glue pool, and a glue uniformizing device is arranged directly above the rubber stripping device, the glue uniformizing device comprises a base plate, the surface of the base plate is provided with a through opening, a plurality of rolling wheels are arranged on the surface of the base plate at equal angles around the through opening, and a conduction gap is formed between the rolling wheels, the glass fiber sleeve is upwardly passed through the rubber stripping device, the through opening and the conduction gap in the glue pool, the conduction gap for conducting the glass fiber sleeve is formed by the rolling wheels which are uniformly distributed, is used for extruding the silicone rubber layer on the surface of the glass fiber sleeve, forms a glue layer with uniform thickness, and makes the silicone rubber liquid in the glue pool have a high concentration, so that the thickness of the glue layer can meet the standard in one time, a silicone rubber layer with standard thickness and uniformity can be obtained in a single rubber-coating process, the processing flow is saved, the processing difficulty is reduced, and the defective rate caused by multiple times of rubber coating is also reduced.

Description

Technical Field

[0001] This invention relates to the field of coated fiberglass sleeve processing, and more particularly to a coating device and coating process for coated fiberglass sleeves. Background Technology

[0002] Fiberglass sleeves are sleeves made of reinforced braided fiberglass. Due to their advantages such as good heat resistance, insulation and low cost, they are widely used for the outer protection of lines and cables. Glue-coated fiberglass sleeves have a silicone rubber layer on the outside of the fiberglass base tube, which makes the product not only have the advantages of fiberglass tubes, but also has the characteristics of not being easily deformed and having a dense structure, and is therefore widely used.

[0003] The coating process for coated fiberglass tubing involves threading the braided fiberglass tube upwards through a glue tank, allowing the outer surface of the tube to be automatically coated with glue. After a vulcanization process, a dense outer protective layer is formed. When the base tube is threaded upwards through the glue tank, silicone rubber liquid is automatically coated onto the outer surface of the base tube. To maintain a uniform silicone rubber layer thickness, the silicone rubber liquid needs to be diluted to improve its fluidity and allow it to form a uniform thin layer on the outer wall of the base tube under gravity. Although the resulting silicone rubber layer is relatively uniform, its thickness is small. To meet product characteristics, multiple coating processes are generally required to achieve the standard thickness. This operation method makes the processing process long and difficult, and repeated coating operations can easily increase the defect rate. Summary of the Invention

[0004] The purpose of this invention is to solve the following problems existing in the prior art: When the glass fiber base tube passes through the glue pool upwards, the silicone rubber liquid automatically coats the outer surface of the base tube. In order to maintain the uniform thickness of the silicone rubber layer, the silicone rubber liquid needs to be diluted to make the silicone rubber more fluid and able to form a uniform thin layer on the outer wall of the base tube under the action of gravity. Although the obtained silicone rubber layer is relatively uniform, the thickness is small. In order to meet the product characteristic requirements, multiple glue coating processes are generally required to achieve the standard thickness. This operation method makes the processing process longer and more difficult. Repeated glue coating operations can easily increase the defect rate.

[0005] To address the problems existing in the prior art, the present invention provides an adhesive coating device for fiberglass sleeves, comprising an open-top adhesive pool, an adhesive stripper disposed above the adhesive pool, and an adhesive leveler disposed directly above the adhesive stripper. The adhesive leveler comprises a substrate, the surface of which has an opening, and multiple rollers disposed at equal angles around the opening on the surface of the substrate, with conduction gaps formed between the rollers. The fiberglass sleeve passes upward from the adhesive pool through the adhesive stripper, the opening, and the conduction gaps, and the rollers make contact with the outer wall of the fiberglass sleeve by compression.

[0006] Preferably, the spin coater has at least two sets, and the conduction gaps of the spin coater are vertically aligned, and the angular distribution of the roller planes of the spin coater is staggered.

[0007] Preferably, there is an expander between the glue peeler and the glue spreader, and between adjacent glue spreaders. The expander is placed inside the glass fiber sleeve. The outer edge of the roller is arc-shaped and concave, so that the conduction gap is elliptical. The minimum diameter of the ellipse of the conduction gap is smaller than the cross-sectional diameter of the expander.

[0008] Preferably, the expander is a sphere.

[0009] Preferably, the surface of the substrate has a slotted hole pointing towards the center of the opening, and the surface of the substrate is provided with a contour plate. The mounting part of the rolling wheel has a mounting hole aligned with the contour plate. The rolling wheel and the contour plate are positioned on the surface of the substrate by using bolts passing through the mounting hole and the slotted hole.

[0010] Preferably, the surface of the substrate is provided with a plurality of waxing components, which are aligned with the grinding wheel one by one. Each waxing component includes a wax body, which is in contact with the outer edge of the grinding wheel.

[0011] Preferably, the waxing assembly further includes a mounting cylinder, which is fixed to the edge of the substrate. A guide cylinder is threaded inside the mounting cylinder, and wax is inserted into the guide cylinder. The end of the guide cylinder away from the roller is connected to a push plate by a spring. The push plate squeezes the wax so that the wax comes into contact with the outer edge of the roller.

[0012] Preferably, the adhesive stripper includes multiple vertically arranged partitions, with a guide port for conducting glass fiber sleeve at the center of each partition. The diameter of the guide ports of the partitions decreases sequentially from bottom to top, and the guide port of the uppermost partition is an ellipse with a minimum diameter smaller than the diameter of the expander.

[0013] The specific steps of the adhesive application process based on the aforementioned adhesive application device for fiberglass sleeves are as follows:

[0014] A. The glue tank contains silicone rubber liquid, and the glass fiber sleeve is conducted upward from the glue tank, so that the silicone rubber liquid adheres to the outer wall of the glass fiber sleeve.

[0015] B. The fiberglass sleeve passes through the stripper, which removes the excessively thick silicone rubber liquid from the outer wall of the fiberglass sleeve, so that the original adhesive layer is formed on the surface of the fiberglass sleeve.

[0016] C. The fiberglass sleeve passes through the transmission gap between the rollers. The rollers roll and squeeze the original adhesive layer on the surface of the fiberglass sleeve, making the thickness of the original adhesive layer tend to be uniform.

[0017] Compared with related technologies, the adhesive coating device and coating process for fiberglass sleeves provided by the present invention have the following advantages:

[0018] 1. The present invention uses uniformly distributed rollers to form the conductive gap of the conductive glass fiber sleeve, which is used to squeeze the silicone rubber layer on the surface of the glass fiber sleeve to form a glue layer of uniform thickness. This makes the silicone rubber liquid in the glue pool highly concentrated, which makes it easy to achieve the required glue thickness in one application. A single glue application process can obtain a silicone rubber layer of the required thickness and uniformity, saving processing steps, reducing processing difficulty, and also reducing the defect rate caused by multiple glue applications.

[0019] 2. The present invention uses a waxing component to coat the surface of the roller with wax to form a wax layer, which isolates the roller from the silicone rubber layer on the surface of the glass fiber sleeve through the wax layer, effectively preventing silicone rubber from adhering to the surface of the roller and also making the silicone rubber layer form a smooth rolling surface.

[0020] 3. The present invention uses a stripper to scrape off excess silicone rubber from the surface of the glass fiber sleeve that has just exited the glue pool, which facilitates the subsequent rolling and shaping of the silicone rubber. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the distribution structure of the glue peeler and glue spreader of the present invention;

[0023] Figure 3 This is a schematic diagram of the expansion body distribution structure of the present invention;

[0024] Figure 4 This is a schematic diagram of the spin coater structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the grinding wheel mounting structure of the present invention;

[0026] Figure 6 This is a schematic diagram of the waxing component structure of the present invention;

[0027] Figure 7 This is a schematic diagram of the adhesive stripper structure of the present invention.

[0028] The following are the labels in the diagram: 1. Adhesive tank; 2. Support; 3. Adhesive peeler; 31. Partition; 32. Guide port; 33. Hollowed-out groove; 4. Spreader; 41. Substrate; 42. Roller; 43. Contour plate; 44. Slot; 5. Expander; 6. Waxing assembly; 61. Mounting cylinder; 62. Guide cylinder; 63. Push plate; 64. Wax body. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0030] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0031] Example 1

[0032] like Figure 1-2 As shown, the adhesive coating device for the fiberglass sleeve includes an open-top adhesive pool 1, a transmission wheel installed inside the adhesive pool 1, a high-concentration silicone rubber solution placed in the adhesive pool 1, and the base tube of the fiberglass sleeve passing around the transmission wheel and being transmitted upward from the adhesive pool 1, directly connected to the traction device at the other end. A peeler 3, a glue spreader 4, and subsequent vulcanization equipment are set on the transmission path of the base tube.

[0033] Multiple parallel supports 2 are fixed to the surface of the glue tank 1. The supports 2 extend vertically upward to support the glue peeler 3 and the glue spreader 4.

[0034] like Figure 2 , 3 As shown in Figure 7, the adhesive peeler 3 includes multiple partitions 31, which are arranged vertically and fixedly connected to the bracket 2. A circular guide opening 32 is opened at the center of the partition 31. The guide openings 32 are concentrically aligned vertically, and the diameter of the guide openings 32 decreases from bottom to top.

[0035] The surface of the base tube drawn from the glue pool 1 is covered with silicone rubber. Due to the high concentration of silicone rubber, there is a large amount of silicone rubber adhering to the surface of the base tube. The base tube passes vertically through the guide port 32. The diameter of the guide port 32 decreases and the excess silicone rubber on the surface of the base tube is gradually scraped off, leaving an appropriate amount of silicone rubber on the surface of the base tube to form the original glue layer.

[0036] like Figure 7 As shown, the surface of the partition 31 has a perforated groove 33, through which the peeled silicone rubber falls back into the glue pool 1.

[0037] like Figure 4-5 As shown, the spin coater 4 includes a substrate 41, which is fixedly connected to the support 2. The center of the substrate 41 has a circular opening. Four sets of slots 44 are opened at equal angles around the opening on the surface of the substrate 41. The slots 44 point to the center of the opening. An elliptical profile plate 43 is attached to the surface of the substrate 41. Four sets of rollers 42 are distributed at equal angles around the opening. The rollers 42 have a rotating base. The surface of the rotating base of the rollers 42 and the surface of the profile plate 43 have circular mounting holes. The profile plate 43 is concentrically aligned with the substrate 41. Bolts are used to pass through the mounting holes and slots 44 on the surfaces of the rotating base and the profile plate 43 to position the rollers 42 at equal angles around the opening.

[0038] The outer edge of the grinding wheel 42 is a concave surface. The four sets of grinding wheels 42 form an elliptical contour transmission gap. The guide opening 32 of the uppermost partition plate 31 is also elliptical and has the same size as the transmission gap.

[0039] like Figure 2-4As shown, there are at least two sets of spin coaters 4, which are vertically distributed and the centers of the conduction gaps are vertically aligned. The rollers 42 of adjacent spin coaters 4 are staggered. Multiple spherical expanders 5 are provided between the uppermost partition plate 31 and the spin coater 4, as well as between adjacent spin coaters 4. The diameter of the expander 5 is the same as the inner diameter of the glass fiber sleeve, and the minimum diameter of the conduction gap is smaller than the diameter of the expander 5.

[0040] After the glass fiber sleeve carrying the original adhesive layer passes through the uppermost guide 32, the expander 5 is placed inside it and continues to rise and conduct. Each time it passes through a substrate 41, a set of expanders 5 is placed into the glass fiber sleeve until the glass fiber sleeve passes through the through and all the conduction gaps in sequence. The length of each set of expanders 5 is slightly less than the distance between the uppermost partition 31 and the substrate 41 and the distance between adjacent substrates 41.

[0041] The expansion body 5 is always positioned between the partition 31 and the substrate 41 and between adjacent substrates 41 due to the restriction of the conduction gap and the uppermost guide 32. Supported by the expansion body 5, the glass fiber sleeve is in a full cylindrical state. As the glass fiber sleeve conducts upward, it gradually deforms into an elliptical cross-section and passes through the conduction gap. Its outer surface is squeezed by the roller 42. Under the close support of the expansion body 5, the deformation resistance of the glass fiber sleeve increases. Under the action of the deformation resistance and the force of the roller 42, the silicone rubber layer on the surface of the glass fiber sleeve is squeezed, making the silicone rubber layer adhere more tightly to the glass fiber sleeve and the thickness more uniform.

[0042] The continuously distributed spin coater 4 enables multi-directional extrusion of the glass fiber sleeve, further improving the uniformity and density of the outer silicone rubber layer.

[0043] like Figure 5 As shown, the shape of the conduction path can be adjusted according to the glass fiber sleeve of different diameters. The surface concave shape of the roller 42 used for glass fiber sleeves of different diameters is different. Select a set of rollers 42 that are suitable. The setting of the slot 44 is used to adjust the installation of the roller 42. Simply replace the corresponding contour plate 43 and align it with the through hole. Then use bolts to pass through the mounting hole and the slot 44 to accurately replace and position the rollers 42 of different models. It is suitable for applying glue to glass fiber collars of different sizes. The glue peeler 3 can also be replaced accordingly.

[0044] Example 2

[0045] like Figure 4 , 6 As shown, multiple waxing components 6 for aligning rollers 42 are provided on the edge of the substrate 41 for applying wax to the rollers 42 to prevent silicone rubber from adhering to the surface of the rollers 42.

[0046] The waxing assembly 6 includes a wax body 64 and mounting cylinders 61. Four sets of mounting cylinders 61 are fixed to the edge of the base plate 41. The guide cylinder 62 is threadedly fixed inside the mounting cylinder 61 so that the guide cylinder 62 points towards the grinding wheel 42. The inner cavity of the guide cylinder 62 is a smooth cylindrical cavity. The shape of the wax body 64 is slidably adapted to the cavity of the guide cylinder 62. The wax body 64 is inserted into the guide cylinder 62. The push plate 63 is elastically connected to the end of the guide cylinder 62 away from the grinding wheel 42 by a spring.

[0047] The push plate 63 is pulled by the spring to squeeze the wax body 64, causing the other end of the wax body 64 to squeeze the roller 42. The roller 42 rotates during the transmission of the glass fiber sleeve. The surface of the rotating roller 42 is coated with wax body 64 to form a wax layer, which isolates the roller 42 from the silicone rubber layer on the surface of the glass fiber sleeve through the wax layer, effectively preventing silicone rubber from adhering to the surface of the roller 42, and also making the silicone rubber layer form a smooth rolling surface.

[0048] As the wax 64 is gradually consumed, the pusher plate 63 continuously pushes the wax 64 to make pressure contact with the roller 42 under the action of elasticity. When the wax 64 is consumed to the limit, you only need to rotate and disassemble the guide cylinder 62 and re-insert it to replace the wax 64.

[0049] Example 3

[0050] The specific steps of the adhesive application process based on the aforementioned adhesive application device for fiberglass sleeves are as follows:

[0051] A. Silicone rubber liquid is placed in the glue tank 1, and the glass fiber sleeve is conducted upward from the glue tank 1, so that the silicone rubber liquid adheres to the outer wall of the glass fiber sleeve.

[0052] B. The glass fiber sleeve passes through the peeler 3, which removes the excessively thick silicone rubber liquid from the outer wall of the glass fiber sleeve, so that the original adhesive layer is formed on the surface of the glass fiber sleeve.

[0053] C. The fiberglass sleeve passes through the transmission gap between the rollers 42. The rollers 42 roll and squeeze the original adhesive layer on the surface of the fiberglass sleeve, making the thickness of the original adhesive layer tend to be uniform.

Claims

1. A glue-coating device for fiberglass sleeves, comprising a glue tank (1) with an open top, characterized in that, A glue peeler (3) is provided above the glue pool (1), and a glue spreader (4) is provided directly above the glue peeler (3). The glue spreader (4) includes a substrate (41). The surface of the substrate (41) has a through-hole. Multiple rollers (42) are arranged at equal angles around the through-hole on the surface of the substrate (41). A conduction gap is formed between the rollers (42). The glass fiber sleeve passes upward from inside the glue pool (1) through the glue peeler (3), the through-hole and the conduction gap. The rollers (42) are pressed and contacted with the outer wall of the glass fiber sleeve. The spin coater (4) has at least two sets, and the transmission gaps of the spin coater (4) are vertically aligned, and the angular distribution of the rollers (42) of the spin coater (4) is misaligned. There is an expansion body (5) between the glue peeler (3) and the glue spreader (4) and between adjacent glue spreaders (4). The expansion body (5) is placed inside the glass fiber sleeve. The outer edge of the roller (42) is arc-shaped concave, so that the conduction gap forms an ellipse. The minimum diameter of the ellipse of the conduction gap is smaller than the cross-sectional diameter of the expansion body (5). The expander (5) is a sphere; The peeler (3) includes multiple vertically arranged partitions (31). The center of each partition (31) has a guide port (32) for conducting glass fiber sleeves. The diameters of the guide ports (32) of the partitions (31) arranged from bottom to top decrease sequentially. The guide port (32) of the uppermost partition (31) is an ellipse with a minimum diameter smaller than that of the expander (5).

2. The adhesive coating device for fiberglass sleeves according to claim 1, characterized in that, The surface of the substrate (41) is provided with a strip hole (44) pointing to the center of the opening. The surface of the substrate (41) is provided with a contour plate (43). The mounting part of the roller (42) has a mounting hole aligned with the contour plate (43). The roller (42) and the contour plate (43) are positioned on the surface of the substrate (41) by using bolts through the mounting hole and the strip hole (44).

3. The adhesive coating device for fiberglass sleeves according to claim 1, characterized in that, The surface of the substrate (41) is provided with a plurality of waxing components (6), which are aligned with the roller (42). Each waxing component (6) includes a wax body (64) which is in contact with the outer edge of the roller (42).

4. The adhesive coating device for fiberglass sleeves according to claim 3, characterized in that, The waxing assembly (6) also includes a mounting cylinder (61), which is fixed to the edge of the substrate (41). A guide cylinder (62) is threaded inside the mounting cylinder (61), and a wax body (64) is inserted into the guide cylinder (62). A push plate (63) is connected to the end of the guide cylinder (62) away from the roller (42) via a spring. The push plate (63) squeezes the wax body (64) so ​​that the wax body (64) is pressed into contact with the outer edge of the roller (42).

5. The coating process based on the coating apparatus for the fiberglass sleeve according to any one of claims 1-4, characterized in that, The specific steps are as follows: A. Silicone rubber liquid is placed in the glue tank (1), and the glass fiber sleeve is conducted upward from the glue tank (1) so that the silicone rubber liquid adheres to the outer wall of the glass fiber sleeve. B. The glass fiber sleeve passes through the peeler (3) to remove the excessively thick silicone rubber liquid from the outer wall of the glass fiber sleeve, so that the original adhesive layer is formed on the surface of the glass fiber sleeve. C. The glass fiber sleeve passes through the transmission gap between the rollers (42). The rollers (42) roll and squeeze the original adhesive layer on the surface of the glass fiber sleeve, making the thickness of the original adhesive layer tend to be uniform.

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