A spherical gas cylinder welding positioning tool

Abstract

The present application relates to a kind of spherical gas cylinder welding positioning tool.The tool includes upper tool body and lower tool body, the upper tool body is equipped with the upper pressing surface for being attached with the spherical surface of the upper hemisphere of spherical gas cylinder, the upper tool body is also equipped with the upper fixed hole that can be coaxial with the mounting hole on the upper hemisphere when the upper hemisphere is loaded;Lower tool body is equipped with the lower pressing surface for being attached with the spherical surface of the lower hemisphere of spherical gas cylinder, the lower tool body is also equipped with the lower fixed hole corresponding to the upper fixed hole on the upper tool body, the lower fixed hole is coaxial with the corresponding upper fixed hole when the tool is used;When using, the upper hemisphere is loaded in the upper tool body, the lower hemisphere is loaded in the lower tool body, and the coaxial fixation of the upper hemisphere and the lower hemisphere is realized by the matched bolt passing through the upper fixed hole, the mounting hole on the upper hemisphere and the lower fixed hole.The tool is used to solve the problem that the upper hemisphere and the lower hemisphere of spherical gas cylinder in the prior art are not easy to be coaxial after welding and are prone to deformation.

Description

Technical Field

[0001] This invention relates to a welding positioning fixture for spherical gas cylinders. Background Technology

[0002] Spherical gas cylinders are typically manufactured by processing them into two hemispheres, such as... Figure 1 As shown, the upper hemisphere 101 and the lower hemisphere 102 are respectively. After the upper hemisphere 101 and the lower hemisphere 102 are processed separately, they are joined and welded together to complete the forming of the spherical gas cylinder. The upper hemisphere 101 is also provided with three mounting ears 103. The plane of the three mounting ears 103 is parallel to and close to the plane of the upper hemisphere 101. The three mounting ears 103 are evenly distributed on the spherical surface of the upper hemisphere 101 around its axis. The mounting ears 103 are provided with mounting holes 104. The axis of the mounting holes 104 is parallel to the axis of the upper hemisphere 101. The mounting ears 103 facilitate the fixing of the spherical gas cylinder during use. The upper hemisphere 101 is also provided with a gas nozzle 105. Of course, the mounting ears 103 and the gas nozzle 105 can also be provided on the lower hemisphere 102.

[0003] When welding the upper and lower hemispheres, the two planes are usually aligned and pressed together before welding begins. This can easily lead to the upper and lower hemispheres not being collinear after welding, and the upper and lower hemispheres are also prone to deformation due to heat during the welding process. Summary of the Invention

[0004] The purpose of this invention is to provide a welding positioning fixture for spherical gas cylinders, which solves the problems in the prior art where the upper and lower hemispheres of spherical gas cylinders are not easily coaxial after welding and are prone to deformation.

[0005] The spherical gas cylinder welding positioning fixture provided by this invention adopts the following technical solution:

[0006] The welding and positioning fixture for the spherical gas cylinder includes:

[0007] The upper tooling body is provided with an upper pressing surface for fitting with the spherical surface of the upper hemisphere of the spherical gas cylinder. The upper tooling body is also provided with an upper fixing hole that can be coaxial with the mounting hole on the upper hemisphere when the upper hemisphere is installed.

[0008] The lower tooling body is provided with a lower pressing surface for fitting with the spherical surface of the lower hemisphere of the spherical gas cylinder. The lower tooling body is also provided with a lower fixing hole corresponding to the upper fixing hole on the upper tooling body. When the spherical gas cylinder welding positioning tooling is used, the lower fixing hole is coaxial with the corresponding upper fixing hole.

[0009] In use, the upper hemisphere is installed into the upper fixture body, and the lower hemisphere is installed into the lower fixture body. The upper and lower hemispheres are coaxially fixed by passing the matching bolts through the upper fixing hole, the mounting hole on the upper hemisphere, and the lower fixing hole.

[0010] The beneficial effects of the spherical gas cylinder welding positioning fixture provided by this invention are as follows: In use, the upper hemisphere of the spherical gas cylinder is inserted into the upper fixture body, with the upper clamping surface of the upper fixture body fitting against the spherical surface of the upper hemisphere. The lower hemisphere of the spherical gas cylinder is then inserted into the lower fixture body, with the lower clamping surface of the lower fixture body fitting against the spherical surface of the lower hemisphere. The upper and lower fixture bodies are then aligned, and matching bolts are used to pass through the upper fixing hole on the upper fixture body, the mounting hole on the upper hemisphere, and the lower fixing hole on the lower fixture body to secure the cylinder. The upper and lower hemispheres are now coaxially fixed. Because both hemispheres are compressed and fixed, they can remain coaxial during welding at the joint, resulting in good coaxiality of the final spherical gas cylinder. In addition, the upper pressing surface on the upper tooling body fits against the spherical surface of the upper hemisphere, and the lower pressing surface on the lower tooling body fits against the spherical surface of the lower hemisphere. During welding, the upper and lower hemispheres can be shaped to ensure that they do not deform significantly.

[0011] Furthermore, both the upper and lower fixing holes are provided with at least two, wherein at least two upper fixing holes and the same number of lower fixing holes form at least two fixing hole pairs, and each fixing hole pair is used to mate with a matching bolt. This makes the fixing of the upper and lower tooling bodies more stable, and thus makes the fixing of the upper and lower hemispheres more stable.

[0012] Furthermore, the upper tooling body is provided with an upper fixing lug and an upper fixing hole, and the lower tooling body is provided with a lower fixing lug and a lower fixing hole. This design allows for a smaller dimension of the fixing lug along the axial direction of the fixing hole, thus allowing for a shorter length of the matching bolts used to fix the upper and lower tooling bodies, saving costs and facilitating fixing.

[0013] Furthermore, when the upper fixing ear is in use, the side facing the lower fixing ear is coplanar with the end face of the upper tooling body facing the lower tooling body when in use, and the side facing the upper fixing ear when the lower fixing ear is in use is coplanar with the end face of the lower tooling body facing the upper tooling body when in use. This design shortens the distance between the upper and lower fixing ears when the upper and lower tooling bodies are mated, allowing for shorter bolts used to fix the upper and lower tooling bodies, saving costs and facilitating fixing.

[0014] Furthermore, both the upper and lower tooling bodies are cylindrical. The axis of the upper tooling body is parallel to the axis of the upper fixing hole, and the axis of the lower tooling body is parallel to the axis of the lower fixing hole. Given the diameter of the spherical gas cylinder, the cylindrical upper and lower tooling bodies, while allowing for the creation of upper and lower clamping surfaces, require less volume, consume less material, and have lower costs.

[0015] Furthermore, the upper tooling body is provided with an upper hemispherical receiving groove, the groove wall of which constitutes the upper pressing surface; the lower tooling body is provided with a lower hemispherical receiving groove, the groove wall of which constitutes the lower pressing surface. This arrangement results in a larger pressing surface area on the tooling body, enabling it to cover a higher proportion of the spherical surface on the hemisphere, further limiting the deformation of the hemisphere during the welding process.

[0016] Furthermore, the upper tooling body is also provided with a clearance groove or clearance hole for the air nozzle on the upper hemisphere to extend into. This design allows the tooling to be used when the air nozzle is not removable and is mounted on the upper hemisphere, thus improving the tooling's versatility. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a spherical gas cylinder as described in the background art;

[0018] Figure 2 This is a schematic diagram of an embodiment of the spherical gas cylinder welding positioning fixture provided by the present invention;

[0019] Figure 3 This is a usage diagram of an embodiment of the spherical gas cylinder welding positioning fixture provided by the present invention.

[0020] In the diagram: 101-Upper hemisphere, 102-Lower hemisphere, 103-Mounting ear, 104-Mounting hole, 105-Air nozzle; 1-Upper tooling body, 2-Lower tooling body, 3-Upper fixing ear, 4-Lower fixing ear, 5-Upper fixing hole, 6-Lower fixing hole, 7-Upper hemisphere receiving groove, 8-Allowing groove, 9-Upper hemisphere, 10-Lower hemisphere, 11-Mounting ear, 12-Mounting hole, 13-Air nozzle. Detailed Implementation

[0021] 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 only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, and not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0023] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0024] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0025] An embodiment of the spherical gas cylinder welding positioning fixture provided by the present invention:

[0026] This tooling is used in the production of spherical gas cylinders, which are manufactured by dividing the cylinder into two hemispheres and then welding them together to form a single unit; for example... Figure 3 As shown, the upper hemisphere 9 has three mounting ears 11 on its spherical surface, each of the three mounting ears 11 has a mounting hole 12, the axis of the three mounting holes 12 is parallel to the axis of the upper hemisphere 9, the three mounting ears 11 are in the same plane perpendicular to the axis of the upper hemisphere 9 and are evenly distributed around the axis of the upper hemisphere 9; the upper hemisphere 9 is also provided with an air nozzle 13.

[0027] like Figure 2 and Figure 3As shown, the tooling includes an upper tooling body 1 and a lower tooling body 2, both of which are cylindrical. An upper hemispherical receiving groove 7 is provided on the upper tooling body 1, recessed from one end face of the upper tooling body 1. The upper hemispherical receiving groove 7 is used to receive an upper hemisphere 9. After the upper hemisphere 9 is inserted into the upper hemispherical receiving groove 7, its spherical surface fits against the groove wall surface of the upper hemispherical receiving groove 7. Correspondingly, a lower hemispherical receiving groove (not shown in the figure) is provided on the lower tooling body 2, recessed from one end face of the lower tooling body 2. The lower hemispherical receiving groove is used to receive a lower hemisphere 10. After the lower hemisphere 10 is inserted into the lower hemispherical receiving groove, its spherical surface fits against the groove wall surface of the lower hemispherical receiving groove. The groove wall surface of the upper hemispherical receiving groove 7 constitutes the upper pressing surface on the upper tooling body 1, and the groove wall surface of the lower hemispherical receiving groove constitutes the lower pressing surface on the lower tooling body 2.

[0028] like Figure 2 and Figure 3 As shown, three upper fixing ears 3 are provided on the outer peripheral surface of the upper tooling body 1. The three upper fixing ears 3 are positioned close to the end face of the upper tooling body 1 where the upper hemisphere receiving groove 7 is opened and are evenly distributed around the axis of the upper tooling body 1. The side of the upper fixing ear 3 facing away from the end face of the upper tooling body 1 where the upper hemisphere receiving groove 7 is not opened is coplanar with the end face of the upper tooling body 1 where the upper hemisphere receiving groove 7 is opened. Correspondingly, three lower fixing ears 4 are also provided on the outer peripheral surface of the lower tooling body 2. The three lower fixing ears 4 are positioned close to the end face of the lower tooling body 2 where the lower hemisphere receiving groove is opened and are evenly distributed around the axis of the lower tooling body 2. The side of the lower fixing ear 4 facing away from the end face of the lower tooling body 2 where the lower hemisphere receiving groove is not opened is coplanar with the end face of the lower tooling body 2 where the lower hemisphere receiving groove is opened. The three lower fixing ears 4 correspond one-to-one with the three upper fixing ears 3 on the upper tooling body 1.

[0029] like Figure 2 and Figure 3 As shown, each of the three upper fixing ears 3 has an upper fixing hole 5. The axes of the three upper fixing holes 5 are all parallel to the axis of the upper tooling body 1. When the upper hemisphere 9 is inserted into the upper hemisphere receiving groove 7 of the upper tooling body 1, the three mounting ears 11 on the upper hemisphere 9 correspond one-to-one with the three upper fixing ears 3 on the upper tooling body 1, and can ensure that the upper fixing hole 5 in the upper fixing ear 3 is coaxial with the mounting hole 12 in the corresponding mounting ear 11. Each of the three lower fixing ears 4 has a lower fixing hole 6. The axes of the three lower fixing holes 6 are all parallel to the axis of the lower tooling body 2. When the lower hemisphere receiving groove on the lower tooling body 2 is opposite to the upper hemisphere receiving groove 7 on the upper tooling body 1, the lower fixing hole 6 on the lower fixing ear 4 can be coaxial with the upper fixing hole 5 on the corresponding upper fixing ear 3. The three upper fixing holes 5 and the three lower fixing holes 6 form three fixing hole pairs.

[0030] To ensure that the upper hemisphere 9 can be smoothly installed into the upper tooling body 1 and that the spherical surface of the upper hemisphere 9 fits against the groove wall of the upper hemisphere receiving groove 7, a clearance groove 8 is provided on the upper tooling body 1 for the air nozzle 13 on the upper hemisphere 9 to pass through. When the upper hemisphere 9 is installed into the upper tooling body 1, the air nozzle 13 extends into the clearance groove 8, and the clearance groove 8 penetrates the groove wall of the upper hemisphere receiving groove 7 into the upper tooling body 1.

[0031] like Figure 3 As shown, when using this spherical gas cylinder welding positioning fixture, the upper hemisphere 9 is inserted into the upper fixture body 1, with the spherical surface of the upper hemisphere 9 fitting against the groove wall of the upper hemisphere receiving groove 7 on the upper fixture body 1. Simultaneously, the mounting holes 12 on the three mounting ears 11 of the upper hemisphere 9 are coaxial with the upper fixing holes 5 on the three upper fixing ears 3 on the upper fixture body 1. The lower hemisphere 10 is then inserted into the lower fixture body 2, with the spherical surface of the lower hemisphere 10 fitting against the groove wall of the upper and lower hemisphere receiving grooves on the lower fixture body 2. Then, the planes of the upper hemisphere 9 and the lower hemisphere 10 are aligned, and the lower fixture body 2 or the upper fixture body 1 is rotated to make the lower fixture body... The lower fixing holes 6 of the three lower fixing ears 4 are coaxial with the upper fixing holes 5 of the three upper fixing ears 3 on the upper tooling body 1. Finally, the upper tooling body 1, the upper hemisphere 9, the lower hemisphere 10 and the lower tooling body 2 are fixed together by three matching bolts passing through the corresponding upper fixing holes 5, mounting holes 12 and lower fixing holes 6 respectively. At this time, the planes of the upper hemisphere 9 and the lower hemisphere 10 are in contact, which not only presses the upper hemisphere 9 and the lower hemisphere 10 together, but also ensures that the upper hemisphere 9 and the lower hemisphere 10 are coaxial. In the subsequent process of welding the upper hemisphere 9 and the lower hemisphere 10 together, the upper hemisphere 9 and the lower hemisphere 10 will always be coaxial.

[0032] In the above embodiments, the upper tooling body has three upper fixing ears, that is, three upper fixing holes, and correspondingly three lower fixing ears. In other embodiments, one, two, four, or more upper fixing ears and upper fixing holes can be provided. The number of lower fixing ears can be the same as the number of upper fixing ears, or it can be more or less than the number of upper fixing ears. Of course, when only one upper fixing ear is provided, the number of lower fixing ears can only be equal to or more than the number of upper fixing ears.

[0033] In the above embodiments, the upper tooling body is provided with an upper fixing ear and an upper fixing hole is provided on the upper fixing ear, and the lower tooling body is provided with a lower fixing ear and a lower fixing hole is provided on the lower fixing ear. In other embodiments, the upper tooling body may not be provided with an upper fixing ear, and the upper fixing hole may be directly provided on the upper tooling body and penetrate through the upper tooling body along its axial direction. Similarly, the lower tooling body may not be provided with a lower fixing ear, and the lower fixing hole may be directly provided on the lower tooling body and penetrate through the lower tooling body along its axial direction. Both embodiments can be used in the same way.

[0034] In the above embodiments, the side of the end face of the upper fixing ear back-facing tooling body without the upper hemisphere receiving groove is coplanar with the end face of the upper tooling body with the upper hemisphere receiving groove, and the side of the end face of the lower fixing ear back-facing tooling body without the lower hemisphere receiving groove is coplanar with the end face of the lower tooling body with the lower hemisphere receiving groove. In other embodiments, the side of the end face of the upper fixing ear with the back facing upward on the tooling body that does not have an upper hemisphere receiving groove can be located between the end face of the upper tooling body that does not have an upper hemisphere receiving groove and the end face of the upper tooling body that has an upper hemisphere receiving groove, or it can be located on the side of the end face of the upper tooling body that has an upper hemisphere receiving groove away from the end face of the upper tooling body that does not have an upper hemisphere receiving groove; both are acceptable. The side of the end face of the lower fixing ear with the back facing downward on the tooling body that does not have a lower hemisphere receiving groove can be located between the end face of the lower tooling body that does not have a lower hemisphere receiving groove and the end face of the lower tooling body that has a lower hemisphere receiving groove, or it can be located on the side of the end face of the lower tooling body that has a lower hemisphere receiving groove away from the end face of the lower tooling body that does not have a lower hemisphere receiving groove; both are acceptable.

[0035] In the above embodiments, both the upper tooling body and the lower tooling body are cylindrical. In other embodiments, the upper tooling body and the lower tooling body may also be in the shape of a square prism, a pentagonal prism, or other shapes, all of which are acceptable.

[0036] In the above embodiments, the upper clamping surface is formed by the groove wall of the upper hemisphere receiving groove on the upper tooling body, and the lower clamping surface is formed by the groove wall of the lower hemisphere receiving groove on the lower tooling body. In other embodiments, the upper clamping surface can also be formed by an annular surface on the upper tooling body that can fit against a portion of the spherical surface of the upper hemisphere. That is, after the upper hemisphere is inserted into the upper tooling body, a portion of the spherical surface of the upper hemisphere is exposed and not fitted against the upper clamping surface. Similarly, the lower clamping surface can also be formed by an annular surface on the lower tooling body that can fit against a portion of the spherical surface of the lower hemisphere. That is, after the lower hemisphere is inserted into the lower tooling body, a portion of the spherical surface of the lower hemisphere is exposed and not fitted against the lower clamping surface. This configuration is also acceptable.

[0037] In the above embodiments, the upper tooling body is provided with a clearance groove for avoiding the air nozzle on the upper hemisphere. In other embodiments, the clearance groove can also be replaced by a clearance hole, which can also be used. In addition, if the air nozzle on the spherical gas cylinder is detachable, it can be installed after the spherical gas cylinder is welded. In this case, it is no longer necessary to provide a clearance groove or clearance hole on the upper tooling body.

[0038] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present invention shall also be included within the scope of protection of the present invention.

Claims

1. A welding method for spherical gas cylinders, characterized in that, A spherical gas cylinder welding positioning fixture is used, the spherical gas cylinder welding positioning fixture comprising: The upper tooling body is provided with an upper hemispherical receiving groove. The groove wall of the upper hemispherical receiving groove forms an upper pressing surface that fits against the spherical surface of the upper hemisphere of the spherical gas cylinder. The upper tooling body is also provided with at least two upper fixing holes that can be coaxial with the mounting holes on the upper hemisphere when the upper hemisphere is inserted. The lower tooling body is provided with a lower hemispherical receiving groove. The groove wall of the lower hemispherical receiving groove forms a lower pressing surface for fitting with the spherical surface of the lower hemisphere of the spherical gas cylinder. The lower tooling body is also provided with at least two lower fixing holes corresponding to the upper fixing holes on the upper tooling body. When the spherical gas cylinder welding positioning tooling is used, the lower fixing holes are coaxial with the corresponding upper fixing holes. The at least two upper fixing holes and the same number of lower fixing holes form at least two fixing hole pairs, and each fixing hole pair is used to mate with a matching bolt. In use, the upper hemisphere is installed into the upper fixture body, with the spherical surface of the upper hemisphere fitting against the groove wall of the upper hemisphere receiving groove on the upper fixture body. At the same time, the mounting hole on the mounting ear of the upper hemisphere is coaxial with the upper fixing hole of the upper fixing ear on the upper fixture body. The lower hemisphere is installed into the lower fixture body, with the spherical surface of the lower hemisphere fitting against the groove wall of the upper and lower hemisphere receiving groove on the lower fixture body. Then, the planes of the upper and lower hemispheres are aligned, and the lower fixture body or the upper fixture body is rotated so that the lower fixing hole of the upper and lower fixing ears of the lower fixture body is coaxial with the upper fixing hole of the upper fixing ear on the upper fixture body. Finally, the upper fixture body, the upper hemisphere, the lower hemisphere, and the lower fixture body are fixed together by passing the matching bolts through the corresponding upper fixing hole, mounting hole, and lower fixing hole. At this time, the planes of the upper and lower hemispheres are in contact, which not only presses the upper and lower hemispheres together but also ensures that the upper and lower hemispheres are coaxial.

2. The welding method for spherical gas cylinders according to claim 1, characterized in that, The upper fixture body is provided with an upper fixing ear and an upper fixing hole is provided on the upper fixing ear; the lower fixture body is provided with a lower fixing ear and a lower fixing hole is provided on the lower fixing ear.

3. The spherical gas cylinder welding method according to claim 2, characterized in that, When the upper fixing ear is in use, the side facing the lower fixing ear is coplanar with the end face of the upper tooling body facing the lower tooling body when in use, and the side facing the upper fixing ear when the lower fixing ear is in use is coplanar with the end face of the lower tooling body facing the upper tooling body when in use.

4. The welding method for spherical gas cylinders according to claim 1, characterized in that, Both the upper and lower tooling bodies are cylindrical. The axis of the upper tooling body is parallel to the axis of the upper fixing hole, and the axis of the lower tooling body is parallel to the axis of the lower fixing hole.

5. The welding method for spherical gas cylinders according to claim 1, characterized in that, The upper tooling body is also provided with a clearance groove or clearance hole for the air nozzle on the upper hemisphere to extend into.

Images