Annular welding multi-claw end socket positioning clamp

Abstract

The utility model relates to an annular welding multi-claw end socket positioning clamp which comprises an installation disc and a clamping claw assembly, an installation through hole is formed in the middle of the installation disc, the edge of the installation disc is fixedly connected with a plurality of fixing rods, the installation through hole is connected with a center rod assembly in a sliding mode, and the center rod assembly is fixedly connected with the clamping claw assembly. The end of the fixing rod and the side wall of the center rod assembly are movably connected with the middle and one end of the clamping jaw assembly respectively, the other end of the clamping jaw assembly is provided with a clamping block used for clamping a petroleum gas bottle body, and a rolling bead is arranged at the tail end of the side, corresponding to the bottom of a petroleum gas bottle, of the center rod assembly. According to the circumferential welding multi-claw end socket positioning clamp, a steel cylinder body is clamped by the positioning clamp, it is guaranteed that an end socket and a steel cylinder are accurately aligned, welding uniformity of circumferential welding operation is guaranteed, and the product yield is increased.

Description

Technical Field

[0001] The utility model relates to production equipment for petroleum gas cylinders, in particular to a girth-welded multi-claw head positioning fixture. Background Art

[0002] In the production process of LPG cylinders, the positioning and welding of the head is one of the key steps. The head needs to be precisely positioned on the opening of the cylinder to ensure welding quality and avoid leakage and other safety issues. The positioning method of the LPG cylinder head usually relies on manual operation or simple mechanical clamps. After the head and the cylinder body are connected, a circular welding device is required to weld the head and the cylinder body. The positioning clamps currently on the market cannot ensure the precise alignment of the head and the cylinder when clamping the cylinder body, resulting in uneven welding and increased leakage risk. Manufacturers need to develop a clamp that can accurately clamp the cylinder body so that the concentricity of the cylinder body and the center of the clamp is highly consistent. The circular welding device can ensure the precise alignment of the head and the cylinder, greatly improving the accuracy of the welding and thus improving the product's welding yield. In addition, the circular fixing clamp can only have one set of dedicated clamps corresponding to one diameter. The circular fixing clamp cannot be used if the base diameter is larger than the cylinder diameter. Utility Model Content

[0003] The utility model provides a girth-welded multi-claw head positioning fixture, which aims to at least solve one of the technical problems existing in the prior art.

[0004] The technical solution of the present utility model is a girth-welded multi-claw head positioning fixture, which includes: a mounting plate and a clamping claw assembly, a mounting through-hole is opened in the middle of the mounting plate, a plurality of fixing rods are fixedly connected to the edge of the mounting plate, the mounting through-hole is slidably connected to the center rod assembly, the end of the fixing rod and the side wall of the center rod assembly are movably connected to the middle and one end of the clamping claw assembly respectively, the other end of the clamping claw assembly is provided with a clamping block for clamping the body of the LPG cylinder, and a rolling ball is provided at the end of one side of the center rod assembly corresponding to the bottom of the LPG cylinder.

[0005] Furthermore, the center rod assembly includes a center rod slidingly connected to the mounting through hole, a kit sleeved on the end of the center rod, the rolling ball is provided at the end of the kit, and a first movable connection point is provided on the outside of the kit for movably connecting with one end of the clamping claw assembly.

[0006] Furthermore, a limiting portion is provided on the outer side of the kit, and an elastic member is connected to the center rod between the limiting portion and the mounting plate.

[0007] Furthermore, the elastic member is a spring, and the spring is sleeved between the limiting portion and the mounting plate.

[0008] Furthermore, the clamping claw assembly includes a clamping claw and a connecting rod rotatably connected to one end of the clamping claw, the other end of the connecting rod is movably connected to the first movable connection point, and the middle part of the clamping claw is movably connected to the end of the fixing rod.

[0009] Furthermore, a raised reinforcement portion is provided on the edge of the mounting plate, and the reinforcement portion is fixedly connected to one end of the fixing rod.

[0010] Furthermore, the clamping block is made of hard rubber.

[0011] Furthermore, the central rod assembly is in transmission connection with a power device for driving the central rod assembly to move in translation.

[0012] The beneficial effects of the utility model include:

[0013] The bottom wall of the LPG cylinder contacts the ball bearing for relative sliding fine-tuning. Simultaneously, when the center rod assembly is pulled to the left, the multiple clamping claw assemblies can be linked to close toward the center position. The multiple clamping claw assemblies can fine-tune the outer wall of the LPG cylinder through the clamping block, gradually adjusting the clamping of the cylinder's outer currency at multiple points. Simultaneously, the ball bearing slides to the center point of the cylinder's bottom wall, aligning the center of the cylinder body with the center of the mounting plate. When the fixture is placed horizontally, the cylinder body held by the fixture can also be placed horizontally, allowing the positioning fixture to hold the cylinder body to ensure precise alignment of the head and the cylinder, ensuring uniform circumferential welding and increasing product yield. Furthermore, the multi-claw positioning fixture facilitates the non-spot welding of the upper and lower cylinder heads, completely avoiding the potential welding defects caused by spot welding at the weld seam. The weld seams of the upper and lower heads are closely fitted, ensuring good concentricity. Multi-claw fixtures can share a single set of fixtures within a 20mm diameter range, offering greater versatility. Today's annular fixing fixtures can only have one set of special fixtures corresponding to one diameter, while multi-claw fixtures can share one set of fixtures within a diameter range of 20 mm, and are more versatile. The original annular fixing fixture cannot be used if the base diameter is larger than the cylinder diameter, but the multi-claw positioning fixture is different. It can perfectly solve these problems. The base diameter is not affected and it has strong versatility.

[0014] In addition, additional aspects and advantages of the present invention will be given in part in the following description, and in part will become obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an overall schematic diagram of a girth welding multi-claw head positioning fixture according to an embodiment of the utility model.

[0016] Figure 2 It is a longitudinal sectional schematic diagram of a girth welding multi-claw head positioning fixture according to an embodiment of the present utility model.

[0017] Figure 3 This is a first angle detail diagram of the girth welding multi-claw head positioning fixture according to an embodiment of the present utility model.

[0018] Figure 4 This is a second angle detail diagram of the girth welding multi-claw head positioning fixture according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0019] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the present invention so as to fully understand the purpose, scheme and effect of the present invention. It should be noted that the embodiments and features in the embodiments of this application can be combined with each other unless there is a conflict.

[0020] It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature or indirectly fixed or connected to the other feature. In addition, the terms "upper," "lower," "left," "right," "top," and "bottom" used in this utility model are merely relative to the relative positions of the components of the utility model in the accompanying drawings.

[0021] In addition, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art. The terms used in this specification are only for describing specific embodiments and are not intended to limit the present invention. The term "and / or" as used herein includes any combination of one or more of the related listed items.

[0022] It should be understood that although the terms first, second, third, etc. may be used to describe various elements in the present disclosure, these elements should not be limited to these terms. These terms are only used to distinguish elements of the same type from each other. For example, a first element may also be referred to as a second element, and similarly, a second element may also be referred to as a first element without departing from the scope of the present disclosure.

[0023] Reference Figures 1 to 4 In some embodiments, the present invention discloses a girth welding multi-claw head positioning fixture, which includes:

[0024] Reference Figures 1 to 4 The mounting plate 100 and clamping claw assembly 200 shown in the figure have a mounting hole in the middle of the mounting plate 100. Multiple fixing rods 120 are fixedly connected to the edge of the mounting plate 100. In the figure, three fixing rods 120 are evenly spaced around the mounting plate 100. A center rod assembly 300 is slidably connected to the mounting hole, and the center rod assembly 300 can slide back and forth within the mounting hole.

[0025] Continue to refer to Figures 1 to 4As shown, the end of the fixing rod 120 and the side wall of the central rod assembly 300 are movably connected to the middle and one end of the clamping claw assembly 200 respectively. The other end of the clamping claw assembly 200 is provided with a clamping block 210 for clamping the LPG cylinder body. The end of the central rod assembly 300 corresponding to the bottom of the LPG cylinder is provided with a rolling ball 220. Figure 1 As shown, the bottom wall of the LPG cylinder contacts and slides relatively with the rolling ball 220 for fine adjustment. At the same time, when the center rod assembly 300 is pulled to the left, the multiple clamping claw assemblies 200 can be linked to close to the center position. The multiple clamping claw assemblies 200 can clamp the outer wall of the LPG cylinder through the clamping block 210 for fine adjustment, and gradually adjust the clamping of the cylinder currency at multiple points. At the same time, the rolling ball 220 slides to the center point of the bottom wall of the cylinder, so that the center of the cylinder body and the center of the mounting plate 100 are highly consistent. When the clamp is placed horizontally, the cylinder body clamped by the clamp can also be placed horizontally, so that the positioning clamp clamps the cylinder body to ensure precise alignment of the head and the cylinder, ensure uniform welding during the circumferential welding operation, and increase the product yield.

[0026] Continue to refer to Figures 2 to 4 As shown, the center rod assembly 300 includes a center rod 310 that is slidably connected to the mounting hole, a sleeve 320 that is sleeved onto the end of the center rod 310, and the end of the sleeve 320 is provided with the rolling ball 220. The outer side of the sleeve 320 is provided with a first movable connection point that is movably connected to one end of the clamping claw assembly 200. The rolling ball 200 can rotate on the sleeve 320, and the sleeve is movably connected to one end of the clamping claw assembly, greatly improving the maintainability of the entire clamp.

[0027] Continue to refer to Figures 3 to 4 As shown, the outer side of the sleeve 320 is further provided with a stopper 321. An elastic member is connected to the center rod 310 between the stopper 321 and the mounting plate 100. This elastic member is a spring 330, which is sleeved between the stopper 321 and the mounting plate 100. When the clamp is clamping the cylinder body, it must overcome the tension of the spring to clamp the cylinder. Once the clamp is clamping the cylinder body, the tension of the power device stretching the center rod 310 is removed, and the spring rebounds, driving the center rod 310 in the opposite direction. The center rod 310 then activates the clamping claw assembly 200 to release the cylinder body, automatically completing the unloading operation.

[0028] Continue to refer to Figures 3 to 4 As shown, the clamping jaw assembly 200 includes a clamping jaw 230 and a connecting rod 240 rotatably connected to one end of the clamping jaw 230. The other end of the connecting rod 240 is movably connected to the first movable connection point, and the middle portion of the clamping jaw 230 is movably connected to the end of the fixed rod 120. The linkage between the clamping jaw 230 and the connecting rod 240 structure allows for more flexible clamping and releasing movements.

[0029] Reference Figure 3 As shown, the edge of the mounting plate 100 is provided with a raised reinforcement portion 130 , and the reinforcement portion 130 is fixedly connected to one end of the fixing rod 120 , so that a section of the fixing rod 120 can be strengthened to bear the mass from the clamping claw assembly 200 .

[0030] In some embodiments, the clamping block 210 is made of hard plastic. Hard plastic is less likely to scratch the bottle surface when clamping, maintaining a good appearance quality. The center rod assembly 300 is in transmission connection with a power device for driving its translation. The power device stretches the center rod to achieve the tightening and loosening of the clamp.

[0031] The above description is merely a preferred embodiment of the present invention. The present invention is not limited to the aforementioned embodiments. As long as the technical effects of the present invention are achieved by the same means, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure shall be included within the scope of protection of the present disclosure. Within the scope of protection of the present invention, its technical solutions and / or implementation methods may be modified and varied in various ways.

Claims

1. A girth welding multi-claw head positioning fixture, characterized in that: include: A mounting plate (100) and a clamping claw assembly (200) are provided. A mounting through hole is provided in the middle of the mounting plate (100). A plurality of fixing rods (120) are fixedly connected to the edge of the mounting plate (100). The mounting through hole is slidably connected to a center rod assembly (300). The ends of the fixing rods (120) and the side walls of the center rod assembly (300) are movably connected to the middle and one end of the clamping claw assembly (200) respectively. The other end of the clamping claw assembly (200) is provided with a clamping block (210) for clamping the body of the LPG cylinder. A rolling ball (220) is provided at the end of one side of the center rod assembly (300) corresponding to the bottom of the LPG cylinder.

2. The girth welding multi-claw head positioning fixture according to claim 1 is characterized in that: The center rod assembly (300) comprises a center rod (310) slidably connected to the mounting through hole, and a sleeve (320) sleeved to the end of the center rod (310), the rolling ball (220) being provided at the end of the sleeve (320), and a first movable connection point being movably connected to one end of the clamping claw assembly (200) being provided on the outer side of the sleeve (320).

3. The girth welding multi-claw head positioning fixture according to claim 2 is characterized in that: A limiting portion (321) is further provided on the outer side of the sleeve (320), and an elastic member is connected to the center rod (310) between the limiting portion (321) and the mounting plate (100).

4. The girth welding multi-claw head positioning fixture according to claim 3 is characterized in that: The elastic member is a spring (330), and the spring (330) is sleeved between the limiting portion (321) and the mounting plate (100).

5. The girth welding multi-claw head positioning fixture according to claim 2, characterized in that: The clamping claw assembly (200) includes a clamping claw (230) and a connecting rod (240) rotatably connected to one end of the clamping claw (230), the other end of the connecting rod (240) is movably connected to the first movable connection point, and the middle part of the clamping claw (230) is movably connected to the end of the fixing rod (120).

6. The girth welding multi-claw head positioning fixture according to claim 1, characterized in that: A raised reinforcement portion (130) is provided on the edge of the mounting plate (100), and the reinforcement portion (130) is fixedly connected to one end of the fixing rod (120).

7. The girth welding multi-claw head positioning fixture according to claim 1, characterized in that: The material of the clamping block (210) is hard rubber.

8. The girth welding multi-claw head positioning fixture according to claim 1, characterized in that: The central rod assembly (300) is in transmission connection with a power device for driving the central rod assembly (300) to move in translation.

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