Double-layer winding shaft

Abstract

The utility model discloses a double-layer winding shaft which comprises a first shaft tube, a second shaft tube and a third shaft tube, the second shaft tube is arranged on the outer side of the first shaft tube, and the diameter of the second shaft tube is larger than that of the first shaft tube; the supporting frame is arranged between the first shaft pipe and the second shaft pipe and used for fixing the first shaft pipe and the second shaft pipe; the supporting frame comprises a first fixing ring used for fixing the first shaft tube and a second fixing ring used for fixing the second shaft tube, and the first fixing ring and the second fixing ring are connected and fixed through a fixing plate. According to the double-layer winding shaft provided by the utility model, the second shaft tube is additionally arranged on the basis of an original 3-inch winding shaft, so that the effective diameter of the winding shaft is increased, in the winding process of film materials with the same length, the winding thickness is obviously reduced, the pressure between film material layers is reduced, the glue flowing phenomenon caused by overlarge pressure is avoided, and the service life of the winding shaft is prolonged. And the cleanliness and the quality stability of the surface of the membrane material are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a film material winding device technical field, concretely relates to a double -layer winding shaft. BACKGROUND

[0002] In the production process of PCB and electronic industry, photosensitive dry film and solder mask dry film and other photosensitive film materials are widely used in the manufacturing process of circuit board. The film material usually has certain thickness, viscosity and toughness to ensure good adhesion and corrosion resistance in the production of circuit board. However, due to the characteristics of this film material, how to efficiently and stably wind and keep the structural stability of the winding shaft becomes an important factor affecting the production quality.

[0003] At present, 3 inch (7.62 cm) winding shaft is generally used for winding, and the related production equipment matched with it is also designed according to the standard of 3 inch winding shaft. This traditional winding method meets the basic needs of the industry to a certain extent. However, with the continuous development of electronic industry, the application scene of film material is increasingly diversified, and the requirements for film material winding quality and efficiency are also higher and higher. In the actual production process, when the film material with long length needs to be wound, the existing single layer 3 inch winding shaft design gradually exposes the following shortcomings:

[0004] (1) the flow problem caused by the increase of film material thickness:

[0005] With the increasing number of film material layers on the winding shaft, the pressure of the outer layer of the film increases in the winding process, which causes the film material to easily displace or extrude slightly. Especially in the case of photosensitive film material with certain fluidity, long-term pressure will cause the edge of the film material to appear "flowing glue" phenomenon, that is, the adhesive substances in the film material overflow at the edge, which not only pollutes the winding shaft equipment, but also may cause the instability of the winding shaft structure, and further affect the product quality.

[0006] (2) the side slip problem caused by uneven winding:

[0007] Due to the small diameter of the winding shaft, the weight of the winding shaft will gradually increase when winding the long film material, which is easy to cause uneven thickness in the winding process. The heavier film material is often caused to slide on one side due to insufficient friction under the condition of high speed winding; the side slip not only destroys the neatness of the winding material and affects the accuracy of subsequent use, but also may cause the film material to wrinkle, affecting the final quality of the product.

[0008] (3) the problem of equipment modification cost:

[0009] Although the above problems can be alleviated by replacing a larger diameter reel, the existing equipment in the industry is designed according to a 3-inch reel, and directly replacing the reel means making great changes to the size and structure of the production equipment, which involves the upgrading of the equipment, which undoubtedly brings high cost and affects the production efficiency.

[0010] Therefore, based on the above problems, there is an urgent need to provide a technical solution that can optimize the winding of photosensitive dry film and solder mask dry film and other photosensitive film materials without changing the existing equipment. Utility model content

[0011] The utility model discloses a double-layer winding shaft, which solves at least one technical problem in the prior art.

[0012] The utility model adopts the technical scheme as follows:

[0013] A double-layer winding shaft comprises:

[0014] A first shaft tube;

[0015] A second shaft tube is arranged outside the first shaft tube, and the diameter of the second shaft tube is greater than that of the first shaft tube;

[0016] A support frame is arranged between the first shaft tube and the second shaft tube, and is used for fixing the first shaft tube and the second shaft tube, and the support frame is provided with one or more than one.

[0017] Preferably, the support frame comprises a first fixing ring for fixing the first shaft tube and a second fixing ring for fixing the second shaft tube, and the first fixing ring and the second fixing ring are connected and fixed through a fixing plate.

[0018] Preferably, the first shaft tube and the second shaft tube are respectively sleeved and fixed in the first fixing ring and the second fixing ring.

[0019] Preferably, the fixing plate of the support frame is provided with a reinforcing rib.

[0020] Preferably, the support frame is provided with two or more than two, and one support frame is arranged at each end of the first shaft tube.

[0021] Preferably, the inner diameter of the first shaft tube is 3 inches (7.62 cm), and the inner diameter of the second shaft tube is 4-8 inches (10.16-20.32 cm); the inner diameter of the second shaft tube is 15.24 cm.

[0022] Preferably, the materials of the first shaft tube, the second shaft tube and the support frame are plastic; and the support frame is integrally injection molded.

[0023] Compared with the prior art, the double-layer winding shaft provided by the utility model has at least one beneficial technical effect of the following:

[0024] (1) Reduce the winding thickness of the film material, reduce the risk of glue flow;

[0025] By increasing the outer shaft pipe (second shaft pipe), the effective diameter of the winding shaft is increased, and in the winding process of the film material of the same length, the winding thickness is obviously reduced, the pressure between the film material layers is reduced, the glue flow phenomenon caused by excessive pressure is avoided, the cleanliness and quality stability of the film material surface are improved, and the compatibility is also

[0026] (2) effectively reduce the side slip phenomenon and improve the winding uniformity;

[0027] By setting the double-layer winding shaft structure, the diameter of the winding shaft is increased, the film material can be uniformly distributed on a larger area during the winding process, the side slip problem of the traditional 3-inch winding shaft during the winding of the long film material is avoided, the sliding risk of the film material is effectively reduced, the stability of the winding process and the neatness of the winding material are ensured, and the accuracy of subsequent processing is facilitated.

[0028] (3) good compatibility and low cost;

[0029] The double-layer winding shaft provided by the utility model has the inner diameter of the first shaft pipe of 3 inches, is suitable for the winding shaft of the existing equipment, can be directly used without changing the existing equipment, has good compatibility and low cost.

[0030] In summary, the double-layer winding shaft of the utility model can effectively optimize the winding process of the film material without changing the existing equipment, improve the winding quality, avoid various problems in production, and realize cost control and applicability expansion. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 The structure diagram of one of the embodiments of the double-layer winding shaft described in the utility model embodiment;

[0032] Figure 2 The structure diagram of one of the embodiments of the double-layer winding shaft described in the utility model embodiment; Figure 1

[0033] Figure 3 The structure diagram of another embodiment of the double-layer winding shaft described in the utility model embodiment;

[0034] Figure 4 The structure diagram of another embodiment of the double-layer winding shaft described in the utility model embodiment; Figure 3

[0035] Figure 5 The front view structure diagram of the support frame described in the utility model embodiment; ​​

[0036] Figure 6 A perspective structural schematic view of the support frame according to an embodiment of the present application is shown in the figure;

[0037] Figure 7 A perspective structural schematic view of the support frame according to an embodiment of the present application is shown in the figure;

[0038] In the figure, the reference numerals are:

[0039] 10, first shaft tube; 20, second shaft tube; 30, support frame; 31, first fixing ring; 32, second fixing ring; 33, fixing plate; 34, reinforcing rib. DETAILED DESCRIPTION

[0040] In order to better understand the purpose, technical scheme and technical effect of the present application, the present application will be further explained in the following with reference to the figures and embodiments. It is declared that the embodiments described below are only used to explain the present application and do not limit the present application.

[0041] As shown in the figure, Figures 1-7 A double-layer winding shaft, which comprises:

[0042] A first shaft tube 10;

[0043] A second shaft tube 20, which is arranged outside the first shaft tube 10, and the diameter of the second shaft tube 20 is greater than that of the first shaft tube 10;

[0044] A support frame 30, which is arranged between the first shaft tube 10 and the second shaft tube 20, and is used to fix the first shaft tube 10 and the second shaft tube 20, and the support frame 30 is provided with one or more than one.

[0045] In the figure, the size of the first shaft tube 10 is adapted to the standard size of the existing standard winding shaft (such as a 3-inch winding shaft), and in a specific embodiment, the inner diameter of the first shaft tube 10 is 3 inches (7.62 cm). The double-layer winding shaft in the present embodiment is mainly used for winding of photosensitive dry film and solder mask dry film and other photosensitive film materials. At present, in the industry, the winding of photosensitive dry film and solder mask dry film and other photosensitive film materials is generally carried out by using a 3-inch winding shaft, and the related production equipment matched therewith is also designed according to the standard of the 3-inch winding shaft. Therefore, in order to adapt to the winding shaft of the existing equipment, the winding shaft can also be directly used without changing the existing equipment, and therefore the inner diameter of the first shaft tube 10 is set to 3 inches.

[0046] In a preferred embodiment, the inner diameter of the second shaft tube 20 is 4-8 inches (10.16-20.32 cm). In practical applications, the inner diameter of the second shaft tube 20 can be selected according to actual needs. For example, in one specific embodiment, the inner diameter of the second shaft tube 20 is 6 inches (15.24 cm). In a preferred embodiment, the lengths of the first shaft tube 10 and the second shaft tube 20 are equal. In other embodiments, the lengths of the first shaft tube 10 and the second shaft tube 20 may not be equal.

[0047] In a preferred embodiment, two or more support frames 30 are provided, with one support frame 30 at each end of the first shaft tube 10. The position of the support frame 30 on the first shaft tube 10 or the second shaft tube 20 can be adjusted according to actual needs. For example, the outermost end of the support frame 30 can be flush with the outermost end of the first shaft tube 10 or the second shaft tube 20. Figures 1-2 As shown; the outermost end of the support frame 30 may not be flush with the outermost end of the first shaft tube 10 or the second shaft tube 20, as shown in the attached figure. Figures 3-4 As shown. The number of support frames 30 can be set according to the length of the first shaft tube 10. Usually, one support frame can be set at each end of the first shaft tube 10, or it can be set in the middle section of the first shaft tube 10. If the length of the first shaft tube 10 is short, only one support frame 30 can be set.

[0048] In a preferred embodiment, as shown in the appendix Figures 5-7 The support frame 30 includes a first fixing ring 31 for fixing the first shaft tube 10 and a second fixing ring 32 for fixing the second shaft tube 20. The first fixing ring 31 and the second fixing ring 32 are connected and fixed by a fixing plate 33. In a specific embodiment, the first shaft tube 10 and the second shaft tube 20 are respectively sleeved and fixed inside the first fixing ring 31 and the second fixing ring 32.

[0049] In a preferred embodiment, the fixing plate 33 of the support frame 30 is provided with reinforcing ribs 34 to increase the structural stability of the support frame 30 and adapt to the pressure generated during the winding of the membrane material.

[0050] In one specific embodiment, the first shaft tube 10, the second shaft tube 20, and the support frame 30 are three independent components. For example, the first shaft tube 10, the second shaft tube 20, and the support frame 30 are all made of plastic, and the first shaft tube 10, the second shaft tube 20, and the support frame 30 are all integrally injection molded structures; the first shaft tube 10, the second shaft tube 20, and the support frame 30 can also be integrally injection molded structures.

[0051] The beneficial technical effects of the double-layer winding shaft provided in the embodiments of the utility model include:

[0052] (1) reduce the winding thickness of the film material, reduce the risk of glue flow;

[0053] By increasing the outer shaft tube (second shaft tube 20) on the basis of the 3-inch winding shaft, the effective diameter of the winding shaft is increased, and in the process of winding the film material of the same length, the winding thickness is obviously reduced, the pressure between the film material layers is reduced, the glue flow phenomenon caused by excessive pressure is avoided, and the cleanliness and quality stability of the film material surface are improved.

[0054] (2) effectively reduce the side slip phenomenon and improve the winding uniformity;

[0055] By setting the double-layer winding shaft structure, the diameter of the winding shaft is increased, the film material can be uniformly distributed on a larger area during the winding process, the common side slip problem of the traditional 3-inch winding shaft when winding a long film material is avoided, the sliding risk of the film material is effectively reduced, the stability of the winding process and the neatness of the wound material are ensured, and the accuracy of subsequent processing is beneficial.

[0056] When the traditional 3-inch winding shaft winds thick film material, due to the tension difference between the inner and outer layers of the film material, wrinkles and deformation of the material are easily caused, and the double-layer winding shaft provided by the utility model provides a larger winding space through the outer shaft tube (second shaft tube 20), reduces the tension difference between the inner and outer layers of the film material, and makes the wound material have higher flatness, which is helpful to maintain the consistency of the film material during the production process.

[0057] (3) good compatibility and low cost:

[0058] The double-layer winding shaft provided by the utility model has a first shaft tube 10 with an inner diameter of 3 inches, which is suitable for the winding shaft of the existing equipment, and can be directly used without changing the existing equipment, so that the compatibility is good and the cost is low.

[0059] The above embodiments only express several implementation manners of the utility model, and the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the utility model patent. It should be pointed out that for ordinary skilled persons in the art, without departing from the inventive concept of the utility model, a number of modifications and improvements can be made, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A double layer winding shaft, characterized by, The utility model relates to a kind of support frame for the first shaft pipe and the second shaft pipe, comprising: First shaft pipe (10); Second shaft pipe (20) is arranged outside the first shaft pipe (10), and the diameter of second shaft pipe (20) is greater than the diameter of the first shaft pipe (10); Support frame (30) is arranged between the first shaft pipe (10) and the second shaft pipe (20), for fixing the first shaft pipe (10) with the second shaft pipe (20), and the support frame (30) is provided with one or more than one.

2. The dual layer take-up spool of claim 1, wherein, The support frame (30) includes a first fixing ring (31) for fixing the first shaft pipe (10), and a second fixing ring (32) for fixing the second shaft pipe (20), and the first fixing ring (31) and the second fixing ring (32) are connected and fixed by fixing plate (33).

3. The dual layer take-up spool of claim 2, wherein, The first shaft pipe (10) and the second shaft pipe (20) are respectively sleeved and fixed in the first fixing ring (31) and the second fixing ring (32).

4. The dual layer take-up spool of claim 2, wherein, The fixing plate (33) of the support frame (30) is provided with reinforcing ribs (34).

5. The dual layer spool of claim 1, wherein, The support frame (30) is provided with two or more than two, and one support frame (30) is respectively arranged at the two ends of the first shaft pipe (10).

6. The dual layer take-up spool of claim 1, wherein, The inner diameter of the first shaft pipe (10) is 7.62 cm.

7. The dual layer spool of claim 6, wherein, The inner diameter of the second shaft pipe (20) is 10.16-20.32 cm.

8. The dual layer spool of claim 6, wherein, The inner diameter of the second shaft pipe (20) is 15.24 cm.

9. The dual layer spool of claim 1, wherein, The material of the first shaft pipe (10), the second shaft pipe (20) and the support frame (30) is plastic.

10. The dual layer take-up spool of claim 1, wherein, The support frame (30) is integrally injection molded.

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