Round tube welding positioning clamp
The combined structure of the positioning block, positioning rod and pressure block solves the problem of the round tube being installed skewed on the container, achieves high-precision positioning and welding preparation, and improves the appearance neatness of the container and the convenience of welding.
Patent Information
- Application Number
- CN202422740382.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-11
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-11-11
AI Technical Summary
In the prior art, a round tube is easily deflected when installed on a container, which affects the appearance neatness of the container and the accuracy of the welding position.
The combined structure of positioning block, positioning rod and pressing block is adopted. Through the cone and strip groove design of the positioning block, combined with the elastic part and screw, the coaxial positioning and precise positioning of the round tube can be achieved to prevent over-deep insertion.
The positioning accuracy of the round tube on the container is improved, the neatness of the container appearance is ensured, and a convenient welding space is provided to prevent the round tube from being deflected and inserted too deep.
Smart Images
Figure CN223338767U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of welding positioning fixtures, in particular to a round pipe welding positioning fixture. Background Art
[0002] Vacuum or pressure vessels are typically cylindrical in structure, with several round tubes welded to the sidewalls to serve as inlet and outlet channels for airflow or materials. Existing manufacturing processes often involve manually inserting the round tubes into mounting holes in the container. To facilitate tube installation, the inner diameter of the mounting hole machined into the container is often larger than the outer diameter of the corresponding round tube. This can easily cause the round tube to tilt during manual placement, affecting the overall appearance and neatness of the container and the accuracy of the welded tube position. Utility Model Content
[0003] In order to solve the deficiencies of the existing technology, the utility model provides a round tube welding positioning fixture, which can effectively improve the positioning accuracy of the round tube on the cylindrical container and ensure the neatness of the container appearance.
[0004] In order to achieve the purpose of this utility model, the following scheme is proposed:
[0005] A round tube welding positioning fixture comprises a positioning block, a positioning rod and a pressing block.
[0006] The front end of the positioning block is a conical structure, the diameter of its large end is larger than the inner diameter of the mounting hole on the side wall of the container, and a strip groove is provided at the front end of the positioning block. The strip groove is perpendicular to the front end face of the positioning block, and the axis of the positioning block is located in the middle position in the width direction of the strip groove.
[0007] The positioning rod passes through the positioning block coaxially, and the relative circumferential positions of the positioning rod and the positioning block are fixed. The rear end of the positioning rod is inserted into one end of a telescopic rod, and an elastic member is provided between the telescopic rod and the rear end surface of the positioning block. A cross bar is vertically provided at the front end of the positioning rod, and the cross bar is slidably provided in the strip groove, and the two ends of the cross bar protrude from the opposite sides of the positioning block respectively. A screw is coaxially provided at the front end of the positioning rod.
[0008] The pressing block is a conical block structure with a coaxial threaded hole. The diameter of the pressing block is larger than the inner diameter of the round tube to be installed. When in use, the pressing block is connected to the screw through the threaded hole, and the cone top of the pressing block faces the positioning block.
[0009] The beneficial effects of the utility model are that it helps to make the position of the round tube outside the container more regular, effectively ensures the positioning accuracy of the round tube, and effectively prevents the round tube from being inserted too deeply into the container. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present invention.
[0011] Figure 1 Shown is a schematic diagram of the overall structure of this application.
[0012] Figure 2 Shown is an exploded view of the structure of this application.
[0013] Figure 3 A schematic diagram of the usage status of this application is shown.
[0014] Figure 4 A partial cross-sectional view of the present application is shown when a round tube is sleeved on a screw.
[0015] Figure 5 A partial cross-sectional view is shown of the round tube being positioned on the container.
[0016] Markings in the figure: positioning block -1, strip groove -11, positioning rod -2, cross bar -21, screw -22, telescopic rod -3, elastic member -4, pressing block -5. DETAILED DESCRIPTION
[0017] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the implementation methods of the present invention are described in detail below with reference to the accompanying drawings. However, the embodiments described in the present invention are only part of the embodiments of the present invention, rather than all the embodiments.
[0018] like Figure 1 、 Figure 2 As shown, a round tube welding positioning fixture includes: a positioning block 1, a positioning rod 2 and a pressing block 5.
[0019] Specifically, such as Figure 1 、 Figure 2 As shown, the front end of the positioning block 1 is a conical structure, the diameter of its large end is larger than the inner diameter of the mounting hole on the side wall of the container, and a strip groove 11 is provided at the front end of the positioning block 1. The strip groove 11 is perpendicular to the front end surface of the positioning block 1, and the axis of the positioning block 1 is located in the middle position of the width direction of the strip groove 11.
[0020] Specifically, such as Figure 1 、 Figure 2As shown, the positioning rod 2 coaxially passes through the positioning block 1, and the circumferential relative position of the positioning rod 2 and the positioning block 1 is fixed. Specifically, the positioning rod 2 can be set as a round rod structure, and a connecting key is set on its side wall. The positioning block 1 is used to penetrate the hole wall of the positioning rod 2 to open a key slot for penetrating the connecting key. The circumferential relative position of the positioning rod 2 and the positioning block 1 is kept fixed by the cooperation between the connecting key and the key slot. The rear end of the positioning rod 2 is inserted into one end of a telescopic rod 3, and an elastic member 4 is provided between the telescopic rod 3 and the rear end surface of the positioning block 1. The front end of the positioning rod 2 is vertically provided with a cross bar 21, and the cross bar 21 is slidably provided in the strip groove 11, and the two ends of the cross bar 21 respectively protrude from the opposite sides of the positioning block 1, and the front end of the positioning rod 2 is coaxially provided with a screw 22.
[0021] Specifically, such as Figure 1 、 Figure 2 As shown, the pressing block 5 is a conical block structure with a coaxial threaded hole. The diameter of the pressing block 5 is larger than the inner diameter of the circular tube to be installed. When in use, the pressing block 5 is connected to the screw 22 through the threaded hole, and the cone top of the pressing block 5 faces the positioning block 1.
[0022] Principle of use: Before use, the positioning block 1 is assembled with the positioning rod 2 and the telescopic rod 3 into an integral structure, and the pressing block 5 is placed independently. Figures 3 to 5As shown, when in use, first press the rear end of the positioning rod 2 into the telescopic rod 3 to shorten the distance between the front end of the screw 22 and the rear end of the telescopic rod 3, so that the distance is smaller than the inner diameter of the container. At this time, the elastic member 4 is compressed. During the specific operation, use both hands to push the telescopic rod 3 and the positioning rod 2 toward the middle respectively; then pass the screw 22 from the inner wall of the container to the outside through the mounting hole on the side wall of the container, loosen the telescopic rod 3 and the positioning rod 2, and under the action of the elastic force of the elastic member 4, the rear end of the telescopic rod 3 will abut against the inner wall of the container, and the conical top of the positioning block 1 will be inserted into the mounting hole through which the screw 22 is passed, and the conical surface of the positioning block 1 is fit with the edge of the mounting hole. Under the elastic support of the elastic member 4, the rear end of the telescopic rod 3 will be located at the position on the inner wall of the container at the maximum distance from the positioning block 1, that is, the axis of the telescopic rod 3 will intersect with the axis of the container; then, the round tube is sleeved onto the screw 22 from the outside of the container, and the pressing block 5 is assembled onto the screw 22, with the cone top of the pressing block 5 facing the round tube; finally, the pressing block 5 is rotated to push the round tube toward the positioning block 1. During the rotation of the pressing block 5, the direction of the cross bar 21 is aligned with the axis direction of the container by manually straightening it. At the initial stage of rotation of the pressing block 5, the pressing block 5 will push the circular tube to move toward the positioning block 1, so that the inner edges at both ends of the circular tube will fit with the conical surfaces of the pressing block 5 and the positioning block 1 respectively, so that the circular tube and the positioning rod 2 are coaxial. Continuing to rotate the pressing block 5 will move the circular tube closer to the cross bar 21. In the above-mentioned process of rotating the pressing block 5, the cross bar 21 will abut against the inner wall of the container. The rotating pressing block 5 can finally make the end face of the circular tube abut against the side of the cross bar 21 facing the screw 22, and press the cross bar 21 against the inner wall of the container. During the pressing process, because the inner wall of the container is in an arc structure, the cross bar 21 will swing by itself to a state parallel to the container busbar. Because the container is usually a cylindrical structure, it can also be understood that the cross bar 21 after pressing is parallel to the axis of the container. Through the above operation, the axis of the telescopic rod 3 is first made to intersect with the axis of the container, and then the cross bar 21 is made parallel to the axis of the container. In this way, the axis of the positioning rod 2 can be perpendicularly intersected with the axis of the container. In addition, the conical surface of the positioning block 1 cooperates with the mounting hole, so that the positioning rod 2 and the mounting hole can be coaxial. The circular tube remains coaxial with the positioning rod 2 under the action of the positioning block 1 and the pressing block 5, thereby making the circular tube coaxial with the mounting hole and the axis of the circular tube perpendicularly intersecting with the axis of the container. This helps to make the position of the circular tube outside the container more regular and effectively ensure the accuracy of the circular tube positioning. In addition, the end face of the circular tube is limited by the cross bar 21, which can effectively prevent the circular tube from being inserted too deeply into the container and prevent the circular tube from protruding from the interior of the container. After the circular tube is positioned, the position where the circular tube and the container intersect can be welded on the outside of the container. In this solution, the only part located outside the circular tube is the positioning block 1, and the positioning block 1 is located at the end face of the circular tube, which frees up more space for the welding part of the circular tube and facilitates the welding operation.
[0023] Preferably, the cross-section of the positioning rod 2 is polygonal, including a quadrilateral, triangle or hexagon, etc. The positioning block 1 is used to penetrate the hole of the positioning rod 2 and match the positioning rod 2, so as to keep the relative circumferential position of the positioning rod 2 and the positioning block 1 fixed.
[0024] Preferably, Figure 1 As shown, the elastic member 4 is a cylindrical spring, which is sleeved on the rear end of the positioning rod 2. This structure not only makes the installation of the elastic member 4 more stable, but also effectively reduces the installation size.
[0025] Preferably, Figures 1 to 3 As shown, the side of the cross bar 21 facing the screw rod 22 is an edge structure, and the edge is perpendicular to the axis of the positioning rod 2 to improve the position accuracy of the cross bar 21 contacting the inner wall of the container.
[0026] Preferably, the outer wall of the large end of the pressing block 5 is provided with wear-resistant tooth patterns to prevent the pressing block 5 from slipping when rotating.
[0027] Preferably, the rear end of the telescopic rod 3 is a spherical structure to facilitate movement on the inner wall of the container.
[0028] The above description is only a preferred embodiment of the present invention and does not represent the only embodiment or limit the present invention. It should be understood by those skilled in the art that various changes or equivalent replacements made to the present invention without departing from the scope of the present invention are within the scope of protection of the present invention.
Claims
1. A round tube welding positioning fixture, characterized in that: include: The positioning block (1) has a conical structure at its front end, the diameter of its large end being larger than the inner diameter of the mounting hole on the side wall of the container, and a strip groove (11) is provided at the front end of the positioning block (1), the strip groove (11) is perpendicular to the front end surface of the positioning block (1), and the axis of the positioning block (1) is located in the middle of the width direction of the strip groove (11); A positioning rod (2) coaxially passes through the positioning block (1), the circumferential relative positions of the positioning rod (2) and the positioning block (1) are fixed, the rear end of the positioning rod (2) is inserted into one end of a telescopic rod (3), an elastic member (4) is provided between the telescopic rod (3) and the rear end surface of the positioning block (1), a cross bar (21) is vertically provided at the front end of the positioning rod (2), the cross bar (21) is slidably provided in the strip groove (11), and the two ends of the cross bar (21) respectively protrude from opposite sides of the positioning block (1), and a screw rod (22) is coaxially provided at the front end of the positioning rod (2); The pressing block (5) is a conical block structure, and a threaded hole is coaxially opened thereon. The diameter of the pressing block (5) is larger than the inner diameter of the circular tube to be installed. When in use, the pressing block (5) is connected to the screw (22) through the threaded hole, and the cone top of the pressing block (5) faces the positioning block (1).
2. A round tube welding positioning fixture according to claim 1, characterized in that: The cross section of the positioning rod (2) is polygonal, and the positioning block (1) is used to penetrate the hole of the positioning rod (2) and match the positioning rod (2).
3. The round tube welding positioning fixture according to claim 1, characterized in that: The elastic member (4) is a cylindrical spring, which is sleeved on the rear end of the positioning rod (2).
4. The round tube welding positioning fixture according to claim 1, characterized in that: The side of the crossbar (21) facing the screw rod (22) is an edge structure, and the edge is perpendicular to the axis of the positioning rod (2).
5. The round tube welding positioning fixture according to claim 1, characterized in that: The outer wall of the large end of the pressing block (5) is provided with wear-resistant tooth patterns.
6. The round tube welding positioning fixture according to claim 1, characterized in that: The rear end of the telescopic rod (3) is a spherical structure.