A spool structure

Abstract

The application discloses a spool structure, which comprises two oppositely arranged large covers, the outer side of the large cover is provided with a small cover, the large cover is outwardly punched with a reinforcing rib, the small cover is connected with the reinforcing rib, the large cover is inwardly punched with a cylindrical surface, a circular arc angle is formed between the large cover and the cylindrical surface through punching and bending, both ends of a sleeve are respectively sleeved on two cylindrical surfaces, and a welding seam is arranged between the circular arc angle and the sleeve end portion. The spool structure can avoid spool welding point cracking, effectively reduce the problem that steel cord is clamped into the large cover and the sleeve, effectively reduce spool deformation, and reduce the unqualified wire arrangement of the steel cord during winding.

Description

TECHNICAL FIELD

[0001] The present application relates to a spool structure, belonging to the technical field of steel cord. BACKGROUND

[0002] After the steel cord is twisted, it needs to be wound on various types of spools, and then transported to the tire factory for use. After use in the tire factory, the BS spool is returned to the steel cord factory, and the spool is repeatedly used after being shaped. In the prior art, the stamping bending part of the large cover is a right angle, and the sleeve is sleeved on the cylindrical surface of the large cover. Because the reinforcing ribs stamped on the large cover are long, contact type spot welding is implemented. The spot welding is not very firm, and the large cover on both sides of the spool will be spread apart when the spool is full of steel cord, and the large cover on both sides will recover when the spool is empty. Repeated use easily causes the spool welding point to crack. When the steel cord is wound on the spool, the steel cord is easily stuck in the crack between the large cover and the sleeve, which causes the steel cord to be pulled off or the pay-off shaft to be broken during production in the tire factory, resulting in great loss and seriously affecting the production of the tire factory, and there is a great safety hazard. Moreover, the right angle of the stamping bending part of the large cover is easily reduced in strength after repeated use, and the spool is deformed, which causes the steel cord to be wound unevenly and also causes the steel cord to be pulled off or the pay-off shaft to be broken during production in the tire factory, resulting in great loss and seriously affecting the production of the tire factory. SUMMARY

[0003] The technical problem to be solved by the present application is to overcome the defects of the prior art, provide a spool structure, and avoid the spool welding point from cracking, effectively reduce the problem of the steel cord being stuck in the large cover and the sleeve, and effectively reduce the deformation of the spool and the uneven arrangement of the steel cord during winding.

[0004] To solve the above technical problems, the technical scheme adopted by the present application is as follows:

[0005] A spool structure, characterized in that: it comprises two oppositely arranged large covers, the outer side of the large cover is provided with a small cover, the large cover is outwardly stamped with a reinforcing rib, the small cover is connected with the reinforcing rib, the large cover is inwardly stamped with a cylindrical surface, a circular arc angle is formed between the large cover and the cylindrical surface, the two ends of the sleeve are respectively sleeved on the two cylindrical surfaces, and a weld is arranged between the circular arc angle and the end of the sleeve.

[0006] The material of the large cover, the small cover and the sleeve is iron.

[0007] The thickness of the large cover, the small cover and the sleeve is 1.2mm.

[0008] The radius R of the circular arc angle is 2±0.2mm.

[0009] The circular arc angle and the sleeve are connected by full laser welding.

[0010] The shape of the weld longitudinal section is arc-shaped.

[0011] The I-shaped wheel structure provided by the application can effectively reduce the deformation of the I-shaped wheel, prolong the service life, and reduce the unevenness of the wire arrangement when winding the steel cord. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 Fig. 1 is a structural schematic diagram of the I-shaped wheel structure of the application;

[0013] Figure 2 Fig. 2 is an enlarged structural schematic diagram of the middle weld of the I-shaped wheel structure of the application; Figure 1

[0014] In the drawing, the reference signs are as follows: 1-large cover; 2-reinforcing rib; 3-small cover; 4-sleeve; 5-cylindrical surface; 6-circular arc angle; 7-weld. DETAILED DESCRIPTION

[0015] The application will be further described below in combination with the drawings, and the following examples are only used to more clearly illustrate the technical solutions of the application, and cannot be used to limit the protection scope of the application.

[0016] As shown in Figs. 1 and 2, the application provides an I-shaped wheel structure, which comprises two oppositely arranged large covers 1, the outer side of the large cover 1 is provided with a small cover 3, the large cover 1 is outwardly stamped with a reinforcing rib 2, and the small cover 3 is connected with the reinforcing rib 2. The small cover 3 is welded on the large cover to strengthen the strength of the large cover. Figure 1 Figure 2 The large cover 1 is inwardly stamped with a cylindrical surface 5, a circular arc angle 6 is formed at the stamping and bending position between the large cover 1 and the cylindrical surface 5, and the radius R of the circular arc angle is 2±0.2 mm. After the stamping and bending is changed from a right angle to a circular arc angle 6, the stress area at the bending position is increased when the large cover is repeatedly opened and restored during long-time use of the I-shaped wheel, which can effectively reduce the deformation of the I-shaped wheel, prolong the service life, and reduce the unevenness of the wire arrangement when winding the steel cord.

[0017]

[0018] ​​​Two ends of the sleeve 4 are sleeved on two cylindrical surfaces 5 respectively, and the sleeve 4 is installed to the large cover 1 and is substantially the same in height with the arc angle 6, facilitating welding. The arc angle 6 and the end of the sleeve 4 are provided with a weld 7, and the shape of the longitudinal section of the weld 7 is arc-shaped. The weld 7 is away from the plane of the large cover 1 by an arc angle R, so that the welding method can be changed from contact spot welding to laser full welding, without affecting the stamping reinforcing ribs of the large cover. After the welding of the large cover 1 and the sleeve 4 is changed from spot welding to laser full welding, the welding area is increased, the strength is increased, the welding position is not at the maximum stress position, and the cracking is not easily generated after repeated use, and the problem that the steel cord is clamped into the large cover and the sleeve is effectively reduced.

[0019] The material of the large cover 1, the small cover 3 and the sleeve 4 is iron, and the thickness is 1.2 mm. Through the test experiment, the tensile strength of the spool of the application is increased from about 57000N of the original right angle to about 75000N of the arc angle.

[0020] The above is only the preferred embodiment of the application, and it should be pointed out that the ordinary skilled in the art can make several improvements and refinements without departing from the principles of the application, and these improvements and refinements should be regarded as the protection scope of the application.

Claims

1. A spool structure, characterized by: The utility model relates to a double -layered cover, including two opposite big lid (1), the outside of big lid (1) is provided with small lid (3), the big lid (1) is extruded to the outside and is provided with reinforcing rib (2), small lid (3) is connected with reinforcing rib (2), the big lid (1) is extruded to the inside and is provided with cylindrical surface (5), the big lid (1) and cylindrical surface (5) between extruding bending part form arc angle (6), the both ends of sleeve pipe (4) are respectively covered on two cylindrical surface (5), sleeve pipe (4) installs to the big lid (1) after with arc angle (6) height basically same, arc angle (6) and sleeve pipe (4) end between be provided with weld (7), weld (7) and the big lid (1) plane have a arc R angle distance, arc angle (6) and sleeve pipe (4) between through laser full welding connection, the shape of weld (7) longitudinal section is arc.

2. A spool construction according to claim 1, wherein: The material of the big lid (1), the small lid (3) and the sleeve pipe (4) is iron.

3. A spool construction according to claim 1 wherein: The thickness of the big lid (1), the small lid (3) and the sleeve pipe (4) is 1.2mm.

4. A spool construction according to claim 1 wherein: The radius R of the arc angle (6) is (2±0.2)mm.

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