Improved shaft head sealing structure of solar photovoltaic glass calendering roller

Abstract

The utility model relates to the technical field of rollers, in particular to an improved shaft head sealing structure of a solar photovoltaic glass calendering roller. Comprising a hollow roller body provided with a central through hole and a pair of hollow shaft heads which are correspondingly connected to the two ends of the hollow roller body and provided with central through holes, female ends are formed in the two end faces of the hollow roller body, and connecting flanges are arranged at the ends, connected with the hollow roller body, of the hollow shaft heads. The connecting flange is arranged in the inner spigot of the hollow roller body and is fixed on the plane of the inner spigot of the hollow roller body through a fastening screw; wherein a red copper pad is arranged between the female end plane of the hollow roller body and the flange plane of the connecting flange. According to the utility model, the defects in the prior art are overcome, hidden delayed cracks caused by welding factors can be prevented, and the manufacturing quality of the solar photovoltaic glass calendering roller is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rolling rollers, in particular to an improved shaft head sealing structure of a solar photovoltaic glass calendering roller. Background Art

[0002] The solar photovoltaic glass calendering roller is a roller used to manufacture solar photovoltaic glass, which is used under high temperature. The solar photovoltaic glass calendering roller is composed of a hollow roller body 2 with a central through hole 1 and a pair of hollow shaft heads 3 connected to the two ends of the hollow roller body 2 and also with a central through hole 1. The specific structure is as follows Figure 7 As shown. The solar photovoltaic glass calendering roller is made of 2Cr13 material, and is required to achieve a highly reliable seal at the connection between the hollow shaft head 3 and the hollow roller body 2 under a high temperature use environment. To this end, the prior art is to perform rough machining on the hollow roller body 2 and the hollow shaft head 3 respectively, connect the hollow shaft head 3 and the hollow roller body 2 together using a fastening screw 6, and then weld a ring weld 19 between the hollow shaft head 3 and the hollow roller body 2, and at the same time, fully weld the countersunk hole at the connection of the fastening screw 6 20, thereby forming a sealing structure.

[0003] However, since the 2Cr13 material used in the solar photovoltaic glass calendering roller is a material that is difficult to weld, it is affected by factors such as post-welding stress and post-weld heat treatment, and the stability of the welding process is difficult to control. If the welding heat treatment process is not properly controlled, hidden delayed cracks are easily generated. The hidden delayed cracks cannot be detected after the roller is manufactured, but may gradually occur during subsequent use, thereby leading to early failure of the roller.

[0004] Therefore, it is necessary to improve the shaft head sealing structure of the existing solar photovoltaic glass calendering roller in view of the above problems. Utility Model Content

[0005] In order to solve the above problems, the utility model proposes an improved shaft seal structure for solar photovoltaic glass calendering rollers, aiming to overcome the shortcomings of the prior art, prevent the occurrence of hidden delayed cracks caused by welding factors, and improve the manufacturing quality of solar photovoltaic glass calendering rollers. The specific technical solutions are as follows:

[0006] An improved shaft head sealing structure for a solar photovoltaic glass calendering roller comprises a hollow roller body provided with a central through hole and a pair of hollow shaft heads with central through holes correspondingly connected to the two ends of the hollow roller body, inner stops are provided on both end surfaces of the hollow roller body, a connecting flange is provided on the end of the hollow shaft head connected to the hollow roller body, the connecting flange is installed in the inner stop of the hollow roller body and is fixed to the inner stop plane of the hollow roller body by fastening screws; wherein a copper pad is provided between the inner stop plane of the hollow roller body and the flange plane of the connecting flange.

[0007] In order to further improve the reliability of the seal, the inner stop plane of the hollow roller body is densely covered with first concentric circular grooves which are concentric with the central axis of the hollow roller body, and first annular teeth are formed between two adjacent first concentric circular grooves.

[0008] Preferably, the flange plane of the connecting flange is densely covered with second concentric circular grooves which are concentric with the central axis of the connecting flange, and second annular teeth are formed between two adjacent second concentric circular grooves.

[0009] In order to facilitate the processing of the first concentric circular groove 8 on the stop plane of the hollow roller body and the second concentric circular groove on the flange plane of the connecting flange 5, a specially ground serrated turning blade can be used to turn the concentric circular grooves. By grinding a serrated cutter head with multiple tool tips on the turning blade, multiple concentric circular grooves can be turned simultaneously to improve the processing efficiency of the concentric circular grooves.

[0010] Preferably, the first concentric circular grooves and the second concentric circular grooves are staggered with each other in the radial direction.

[0011] As a further improvement of the utility model, the mouth of the central through hole of the hollow roller body is also provided with a first inner diameter hole, one larger than the other, and a second inner diameter hole, and the flange plane of the connecting flange is also provided with a first outer stop, one larger than the other, and a second outer stop, and an outer conical surface is provided between the first outer stop and the second outer stop, and the second outer stop is matched with the second inner diameter hole, and an O-shaped copper ring is provided in the corner space enclosed by the outer conical surface and the first inner diameter hole and the bottom end surface of the first inner diameter hole.

[0012] Preferably, the O-shaped copper ring is a hollow O-shaped copper ring.

[0013] Wherein, the hollow O-shaped copper ring is formed by bending and welding a copper tube.

[0014] In the utility model, a positioning pin is arranged between the hollow roller body and the connecting flange.

[0015] In the utility model, the hollow roller body is a 2Cr13 hollow roller body, and the hollow shaft head is a 2Cr13 hollow shaft head.

[0016] As an alternative to the concentric circular groove structure in the utility model, the first concentric circular groove and the second concentric circular groove are both replaced by spiral grooves, and the spiral grooves gradually expand outward from the center on the inner stop plane of the hollow roller body and the flange plane of the connecting flange, respectively, and spiral teeth are formed between adjacent grooves of the spiral grooves, and the spiral teeth on the inner stop plane of the hollow roller body and the spiral teeth on the flange plane of the connecting flange are radially staggered.

[0017] In the utility model, the hollow shaft head is provided with a positioning circle which is coaxial with the outer circle of the hollow roller body; the outer circle of the hollow roller body and the positioning circle of the hollow shaft head are both the outer circle of the hollow roller body and the positioning circle of the hollow shaft head formed by assembling the hollow roller body and the hollow shaft head together.

[0018] The beneficial effects of the utility model are:

[0019] First, the utility model provides an improved shaft head sealing structure for a solar photovoltaic glass calendering roller, wherein a copper pad is arranged between an inner stop plane of a hollow roller body and a flange plane of a connecting flange, and when the flange of the hollow shaft head is compressed by using a fastening screw, the deformation of the copper pad can be utilized to achieve a good seal between the inner stop plane of the hollow roller body and the flange plane of the connecting flange, and the hollow shaft head and the hollow roller body do not need to be welded, and the countersunk holes at the connection of the fastening screws also do not need to be welded, thereby preventing the occurrence of hidden delayed cracks due to welding factors, thereby improving the manufacturing quality of the solar photovoltaic glass calendering roller.

[0020] Second, the utility model has an improved shaft seal structure for a solar photovoltaic glass calendering roller. The inner stop surface of the hollow roller body and the flange surface of the connecting flange are densely covered with concentric grooves, and annular teeth are formed between two adjacent concentric grooves, which can effectively increase the deformation of the copper pad during compression, making the seal between the hollow shaft head and the hollow roller body more reliable. In addition, the first concentric groove and the second concentric groove are radially staggered, which can form a copper pad with a larger deformation amount, thereby further improving the reliability of the seal.

[0021] Third, the utility model provides an improved shaft seal structure for a solar photovoltaic glass calendering roller. An O-shaped copper ring is arranged in the corner space enclosed by the outer conical surface of the connecting flange, the first inner diameter hole of the hollow roller body, and the bottom end surface of the first inner diameter hole, which is equivalent to adding another sealing structure, thereby further improving the sealing reliability between the hollow shaft head and the hollow roller body. In addition, the O-shaped copper ring is more easily deformed when pressed, which can effectively prevent the connection flange from being unable to be pressed into place due to the limitation of the tightening force of the fastening screw.

[0022] Fourthly, in the utility model, the shaft head sealing improvement structure of the solar photovoltaic glass calendering roller is provided, and the concentric circular grooves are replaced by spiral grooves, so that the grooves can be conveniently and efficiently processed using a lathe. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of an improved structure of the shaft head seal of a solar photovoltaic glass calendering roller of the utility model;

[0024] Figure 2 is Figure 1 A schematic diagram of a structure further improved on the basis of;

[0025] Figure 3 yes Figure 2 A partial enlarged view of

[0026] Figure 4 yes Figure 2 Right view of;

[0027] Figure 5 It is a structural schematic diagram of providing concentric circular grooves on the inner stop surface of a hollow roller body or the flange surface of a connecting flange;

[0028] Figure 6 The spiral groove is used instead of Figure 5 A schematic diagram of the structure of the concentric grooves in FIG.

[0029] Figure 7 The invention is a schematic diagram of the sealing structure of the hollow roller body and the hollow shaft head of the existing solar photovoltaic glass calendering roller.

[0030] In the figure: 1. center through hole, 2. hollow roller body, 3. hollow shaft head, 4. inner stop, 5. connecting flange, 6. fastening screws, 7. copper washer, 8. first concentric groove, 9. first annular tooth, 10. second concentric groove, 11. second annular tooth, 12. outer cone surface, 13. first outer stop, 14. O-type copper ring, 15. positioning pin, 16. spiral groove, 17. spiral tooth, 18. positioning circle, 19. annular weld, 20. full weld, 21. second outer stop, 22. first inner diameter hole, 23. second inner diameter hole. DETAILED DESCRIPTION

[0031] The following is a further description of the specific implementation of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0032] like Figures 1 to 7The figure shows an embodiment of the improved shaft head sealing structure of the solar photovoltaic glass calendering roller of the utility model, comprising a hollow roller body 2 provided with a central through hole 1 and a pair of hollow shaft heads 3 correspondingly connected to the two ends of the hollow roller body 2 and having the central through hole 1, inner stoppers 4 are provided on the two end surfaces of the hollow roller body 2, a connecting flange 5 is provided on the end of the hollow shaft head 3 connected to the hollow roller body 2, the connecting flange 5 is installed in the inner stopper 4 of the hollow roller body 2 and is fixed on the inner stopper plane of the hollow roller body 2 by fastening screws 6; wherein a copper pad 7 is provided between the inner stopper plane of the hollow roller body 2 and the flange plane of the connecting flange 5.

[0033] In order to further improve the reliability of the seal, the inner stop plane of the hollow roller body 2 is densely covered with first concentric circular grooves 8 which are concentric with the central axis of the hollow roller body 2 , and first annular teeth 9 are formed between two adjacent first concentric circular grooves 8 .

[0034] Preferably, the flange plane of the connecting flange 5 is densely covered with second concentric circular grooves 10 which are concentric with the central axis of the connecting flange 5 , and second annular teeth 11 are formed between two adjacent second concentric circular grooves 10 .

[0035] In order to facilitate the processing of the first concentric circular groove 8 on the inner stop plane of the hollow roller body 2 and the second concentric circular groove 10 on the flange plane of the connecting flange 5, a specially ground serrated turning blade can be used to turn the concentric circular grooves. By grinding a serrated cutter head with multiple tool tips on the turning blade, multiple concentric circular grooves can be turned simultaneously to improve the processing efficiency of the concentric circular grooves.

[0036] Preferably, the first concentric circular grooves 8 and the second concentric circular grooves 10 are staggered with each other in the radial direction.

[0037] As a further improvement of the utility model, the mouth of the central through hole 1 of the hollow roller body 2 is also provided with a first inner diameter hole 22 and a second inner diameter hole 23, which are one large and one small, and the flange plane of the connecting flange 5 is also provided with a first outer stop 13 and a second outer stop 21, which are one large and one small, and an outer conical surface 12 is provided between the first outer stop 13 and the second outer stop 21, and the second outer stop 21 is matched with the second inner diameter hole 23, and an O-shaped copper ring 14 is provided in the corner space enclosed by the outer conical surface 12 and the first inner diameter hole 22 and the bottom end surface of the first inner diameter hole 22.

[0038] Preferably, the O-shaped copper ring 14 is a hollow O-shaped copper ring.

[0039] The hollow O-shaped copper ring 14 is formed by bending and welding a copper tube.

[0040] In the utility model, a positioning pin is arranged between the hollow roller body 2 and the connecting flange.

[0041] In the utility model, the hollow roller body 2 is a 2Cr13 hollow roller body, and the hollow shaft head 3 is a 2Cr13 hollow shaft head.

[0042] As an alternative to the concentric circular groove structure in the utility model, the first concentric circular groove 8 and the second concentric circular groove 9 are both replaced by spiral grooves 16, and the spiral grooves 16 gradually expand outward from the center on the inner stop plane of the hollow roller body 2 and the flange plane of the connecting flange 5, respectively. Spiral teeth 17 are formed between adjacent grooves of the spiral grooves 16, and the spiral teeth 17 on the inner stop plane of the hollow roller body 2 and the spiral teeth 17 on the flange plane of the connecting flange 5 are radially staggered.

[0043] In the utility model, a positioning circle 18 coaxial with the outer circle of the hollow roller body 2 is provided on the hollow shaft head 3; the outer circle of the hollow roller body 2 and the positioning circle 18 of the hollow shaft head 3 are both the outer circle of the hollow roller body 2 and the positioning circle 18 of the hollow shaft head 3 formed by assembling the hollow roller body 2 and the hollow shaft head 4 together.

[0044] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An improved structure for the shaft head seal of a solar photovoltaic glass calendering roller, characterized in that: It comprises a hollow roller body provided with a central through hole and a pair of hollow shaft heads with central through holes which are correspondingly connected to the two ends of the hollow roller body, inner stoppers are provided on both end surfaces of the hollow roller body, a connecting flange is provided on one end of the hollow shaft head which is connected to the hollow roller body, the connecting flange is installed in the inner stopper of the hollow roller body and is fixed on the inner stopper plane of the hollow roller body by fastening screws; wherein a copper pad is provided between the inner stopper plane of the hollow roller body and the flange plane of the connecting flange.

2. The improved shaft seal structure of a solar photovoltaic glass calendering roller according to claim 1 is characterized in that: The inner stop plane of the hollow roller body is densely covered with first concentric circular grooves which are concentric with the central axis of the hollow roller body, and first annular teeth are formed between two adjacent first concentric circular grooves.

3. The improved shaft seal structure of a solar photovoltaic glass calendering roller according to claim 2 is characterized in that: The flange plane of the connecting flange is densely covered with second concentric circular grooves which are concentric with the central axis of the connecting flange, and second annular teeth are formed between two adjacent second concentric circular grooves.

4. The improved shaft seal structure of a solar photovoltaic glass calendering roller according to claim 3 is characterized in that: The first concentric circular grooves and the second concentric circular grooves are staggered with each other in the radial direction.

5. The improved shaft seal structure of a solar photovoltaic glass calendering roller according to claim 1, characterized in that: The mouth of the central through hole of the hollow roller body is also provided with a first inner diameter hole, one larger than the other, and a second inner diameter hole, and the flange plane of the connecting flange is also provided with a first outer stop, one larger than the other, and a second outer stop, and an outer conical surface is provided between the first outer stop and the second outer stop, and the second outer stop is matched with the second inner diameter hole, and an O-shaped copper ring is provided in the corner space enclosed by the outer conical surface and the first inner diameter hole and the bottom end surface of the first inner diameter hole.

6. The improved shaft seal structure of a solar photovoltaic glass calendering roller according to claim 5, characterized in that: The O-shaped copper ring is a hollow O-shaped copper ring.

7. The improved shaft seal structure of a solar photovoltaic glass calendering roller according to claim 1, characterized in that: A positioning pin is arranged between the hollow roller body and the connecting flange.

8. The improved shaft seal structure of a solar photovoltaic glass calendering roller according to claim 1, characterized in that: The hollow roller body is a 2Cr13 hollow roller body, and the hollow shaft head is a 2Cr13 hollow shaft head.

9. The improved shaft seal structure of a solar photovoltaic glass calendering roller according to claim 3, characterized in that: The first concentric circular grooves and the second concentric circular grooves are both replaced by spiral grooves, and the spiral grooves gradually expand outward from the center on the inner stop plane of the hollow roller body and the flange plane of the connecting flange, respectively. Spiral teeth are formed between adjacent grooves of the spiral grooves, and the spiral teeth on the inner stop plane of the hollow roller body and the spiral teeth on the flange plane of the connecting flange are radially staggered.

10. The improved shaft seal structure of a solar photovoltaic glass calendering roller according to claim 1, characterized in that: The hollow shaft head is provided with a positioning circle coaxial with the outer circle of the hollow roller body; the outer circle of the hollow roller body and the positioning circle of the hollow shaft head are both the outer circle of the hollow roller body and the positioning circle of the hollow shaft head formed by assembling the hollow roller body and the hollow shaft head together.

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