A welding positioning tool for an actuator cylinder

Abstract

The present application discloses a welding positioning tool for an actuator cylinder body, and the welding positioning tool comprises a first connection block, a second connection block, an inner arc support block, a connection column and a clamping assembly. The tool of the present application realizes the positioning of the cylinder body through the cooperation of the inner arc support block and the clamping assembly, and the tool is installed on an external device through the connection column, so that automated welding can be performed, and the connection column is coaxial with the mounting hole on the inner arc support block, so that the connection column and the column pin can rotate coaxially during the welding process, which can ensure welding quality and welding efficiency.

Description

Technical Field

[0001] The present application relates to the field of manufacturing, and in particular to a welding positioning tool for an actuator cylinder. Background Art

[0002] Pneumatic actuators generally include pistons, piston rods, cylinders, guides, seals, and interface parts. In the manufacturing process of pneumatic actuators, radial holes need to be opened on the side wall of the cylinder, and then the pins and radial holes are welded together (such as Figure 1 As shown), and finally the outer periphery of the cylinder body is polished by mechanical equipment.

[0003] However, in the prior art, the method used for welding the pins is to use a handheld positioning tool to position the pins to be welded in the radial holes of the cylinder body, and then weld the pins. This positioning method not only has low welding efficiency and poor welding quality, but also cannot match suitable automated welding equipment. Utility Model Content

[0004] The embodiment of the present application provides a welding positioning tool for an actuator cylinder body, which can be applied to automated welding equipment to improve welding efficiency and welding quality.

[0005] A welding positioning tool for an actuator cylinder body disclosed in an embodiment of the present application includes a first connecting block, a second connecting block, an inner supporting arc block, a connecting column and a clamping assembly; the first connecting block and the second connecting block are connected to form an L-shaped structure; the inner supporting arc block is arranged on the first connecting block, the inner circumferential wall of the cylinder body to be welded is fitted with the outer arc surface of the inner supporting arc block, and the inner supporting arc block is provided with mounting holes along its radial direction, and the column pins to be welded are respectively arranged in the mounting holes and the radial holes of the cylinder body; the connecting column is arranged on the second connecting block, and the connecting column and the mounting hole are coaxially arranged; the clamping assembly is threadedly connected to the first connecting block, and is used to clamp the cylinder body on the inner supporting arc block.

[0006] The welding positioning tool of the present application has at least the following beneficial effects:

[0007] The welding positioning tool of the present application includes a first connecting block, a second connecting block, an inner supporting arc block, a connecting column and a clamping assembly; when the column pin and the cylinder body need to be welded together, the column pin only needs to be placed in the mounting hole of the inner supporting arc block, and then the cylinder body is sleeved on the inner supporting arc block. At this time, the rotational freedom of the cylinder body can be limited by the cooperation between the column pin and the radial hole on the cylinder body, and then the cylinder body and the inner supporting arc block are pressed together by the clamping assembly to limit the radial freedom of the cylinder body, thereby completing the positioning of the cylinder body. Among them, the welding positioning tool of the present application is designed to connect the connecting column with the external automated welding equipment (for example, connected with the three-jaw chuck on the automated welding equipment), so as to facilitate the realization of the automated welding function, thereby improving the welding quality and efficiency, and because the connecting column, the mounting hole on the inner supporting arc block, the column pin to be welded and the radial hole on the cylinder body are coaxial, when the connecting column rotates, the column pin to be welded and the cylinder body can also rotate coaxially, which can facilitate the welding work. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0009] Figure 1 It is a schematic diagram of the structure of the cylinder body and pin of the actuator;

[0010] Figure 2 is a schematic diagram of the welding positioning tool structure in an embodiment of the present application;

[0011] Figure 3 yes Figure 2 Schematic diagram of the welding positioning fixture after the cylinder block is assembled;

[0012] Figure 4 yes Figure 3 A schematic diagram of the first connection block in FIG.

[0013] Figure 5 yes Figure 3 Sectional view of the welding positioning tool;

[0014] Figure 6 yes Figure 2 Structural schematic diagram of the middle inner support arc block;

[0015] Figure 7 yes Figure 5 The enlarged view of point A in the middle;

[0016] Description of the reference numerals is as follows:

[0017] 1. First connecting block; 1a. Positioning through groove; 1b. Supporting step surface; 1c. First light hole; 1d. Second light hole; 1e. Matching threaded hole;

[0018] 2. Second connecting block; 2a. First screw hole;

[0019] 3. Inner arc block; 3a. Outer arc surface; 3b. Mounting hole; 3c. Second screw hole;

[0020] 4. Connecting column;

[0021] 5. Clamping assembly; 51. Clamping block; 51a. U-shaped notch; 52. Clamping bolt;

[0022] 6. Cylinder body; 6a. Radial hole;

[0023] 7. Pillar pin;

[0024] 8. First connecting bolt;

[0025] 9. Second connecting bolt. DETAILED DESCRIPTION

[0026] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0028] The embodiment of the present application discloses a welding positioning tool for an actuator cylinder body. The welding positioning tool of the embodiment of the present application can be used to position the pin 7 and the cylinder body 6 that need to be welded together. At the same time, the positioned pin 7 and the cylinder body 6 can be connected to an external automated welding equipment to realize automated welding work.

[0029] like Figure 1 As shown, first of all, the two components that need to be welded together in the embodiment of the present application are explained. Among them, during the manufacturing process of the pneumatic actuator, it is necessary to weld multiple pins 7 inside the cylinder body 6. The specific method is to first open a radial hole 6a on the outer side wall of the cylinder body 6, and then one end of the pin 7 is installed in the radial hole 6a, and then the pin 7 and the radial hole 6a are welded together by welding equipment.

[0030] like Figure 2 and Figure 3 As shown, the welding positioning tooling of the embodiment of the present application includes a first connecting block 1, a second connecting block 2, an inner arc support block 3, a connecting column 4 and a clamping assembly 5. The specific structure of the welding positioning tooling is described as follows:

[0031] like Figure 4 As shown, the first connecting block 1 includes a top arc structure and a square block. The arc structure and the square block are integrally formed. A positioning groove 1a is provided on the square block. The positioning groove 1a can play a guiding and limiting role when installing the second connecting block 2, thereby improving the stability of the structure.

[0032] like Figure 4 and Figure 5 As shown, one end of the second connection block 2 is located in the positioning groove 1a, and the first connection block 1 and the second connection block 2 (specifically a square block) are vertically connected to form an L-shaped structure. The specific connection method of the first connection block 1 and the second connection block 2 is: a first light hole 1c is provided on the inner bottom surface of the positioning groove 1a, a first screw hole 2a is provided on the end surface of the second connection block 2, and a first connection bolt 8 passes through the first light hole 1c and is threadedly connected to the first screw hole 2a. In the embodiment of the present application, the first connection block 1 and the second connection block 2 are detachably connected using the first connection bolt 8, which can facilitate replacement, maintenance and other work.

[0033] like Figure 5 and Figure 6As shown, the inner arc block 3 is vertically connected to the first connection block 1 (specifically, connected to the arc structure of the first connection block 1), and the specific connection method is: a second light hole 1d is provided on the arc structure of the first connection block 1, and a second screw hole 3c is provided on the end face of the inner arc block 3, and a second connecting bolt 9 passes through the second light hole 1d and is threadedly connected to the second screw hole 3c. In the embodiment of the present application, the second connecting bolt 9 is used to realize a detachable connection between the inner arc block 3 and the first connection block 1, which can facilitate the replacement of inner arc blocks 3 of different specifications according to actual needs.

[0034] like Figure 7 As shown, in the preferred solution in the embodiment of the present application, a support step surface 1b (plane) is provided on the first connection block 1, and the support step surface 1b extends along the length direction of the inner support arc block 3, and the side wall of the inner support arc block 3 is tightly fitted with the support step surface 1b. In the embodiment of the present application, the design of the support step surface 1b can support and limit the inner support arc block 3, optimize the overall force condition of the tooling, and improve the stability of the structure.

[0035] Please refer again Figure 6 The outer arc surface 3a of the inner supporting arc block 3 fits with the inner circumferential wall of the cylinder body 6 to be welded, which can support and install the cylinder body 6. In a preferred embodiment, the arc length of the outer arc surface 3a is at least one quarter (for example, one third, one half, etc.) of the inner circumference length of the cylinder body 6.

[0036] Please refer again Figure 6 The inner arc block 3 is provided with a mounting hole 3b (circular blind hole) along its radial direction. The mounting hole 3b is provided on the outer arc surface 3a of the inner arc block 3. The depth of the mounting hole 3b is less than the length of the column pin 7 to be welded, so that one end of the column pin 7 can protrude from the outside of the mounting hole 3b and extend into the radial hole 6a of the cylinder body 6, thereby facilitating welding and limiting the rotational freedom of the cylinder body 6. In a preferred embodiment, the inner circumferential wall of the mounting hole 3b can be magnetized or coated with a magnetic layer, so that the inner circumferential wall of the mounting hole 3b has a magnetic attraction, which can adsorb the column pin 7 to be welded, ensure the stability of the position of the column pin 7, and prevent the column pin 7 from offset during the welding process.

[0037] Please refer again Figure 5 The connecting column 4 (cylindrical) is vertically connected to the second connecting block 2. The connecting column 4 can provide a connection part between the welding positioning tool and the external device. For example, the connecting column 4 can be coaxially clamped on the three-jaw chuck of the external device. Among them, the connecting column 4, the mounting hole 3b, the column pin 7 to be welded and the radial hole 6a on the cylinder body 6 correspond coaxially. When the external device drives the connecting column 4 to rotate, the column pin 7 to be welded and the cylinder body 6 can rotate coaxially to facilitate the conversion of the welding position and achieve high-quality welding.

[0038] Please refer again Figure 5 The clamping assembly 5 includes a clamping block 51 and a clamping bolt 52. The clamping block 51 can contact the outer peripheral wall of the cylinder body 6 to be welded, and the outer side wall of the clamping block contacts the outer peripheral wall of the cylinder body. The clamping block 51 can be clamped on the outer peripheral wall of the cylinder body 6 by the clamping bolt 52. The clamping bolt 52 is used to clamp the clamping block on the outer peripheral wall of the cylinder body. Among them, a U-shaped notch 51a is provided on the clamping block 51, and a matching threaded hole 1e is provided on the first connecting block 1 (specifically, the arc structure of the first connecting block 1). The clamping bolt 52 passes through the U-shaped notch 51a and is threadedly connected with the matching threaded hole 1e on the first connecting block 1. The clamping bolt 52 can clamp the clamping block 51 on the outer peripheral wall of the cylinder body 6, thereby realizing the radial positioning of the cylinder body 6. It should be noted that the U-shaped notch 51a used in the embodiment of the present application is designed to allow the clamping block 51 to be pulled out without completely screwing the clamping bolt 52 out of the matching threaded hole 1e.

[0039] In the preferred solution, please refer again Figure 5 Along the length direction of the first connecting block 1, the supporting step surface 1b and the clamping block 51 on the first connecting block 1 are respectively located on both sides of the inner supporting arc block 3, wherein the supporting step surface 1b supports the inner supporting arc block 3, and the clamping block 51 and the clamping bolt 52 can cooperate and clamp the cylinder body 6 on the inner supporting arc block 3, and the inner supporting arc block 3 transfers the clamping force generated by the clamping bolt 52 to the supporting step surface 1b, which can make the overall force of the tooling more uniform and stable.

[0040] In the preferred solution, please refer again Figure 5 The side wall of the pressing block 51 in contact with the cylinder body 6 is configured as an arc-shaped side wall, and the arc-shaped side wall is fitted on the outer peripheral wall of the cylinder body 6, that is, the curvature of the arc-shaped side wall of the pressing block 51 matches the curvature of the outer peripheral wall of the cylinder body 6. The way in which the pressing block 51 fits and presses the cylinder body 6 can increase the force-bearing area and improve the stability of the cylinder body 6 after positioning.

[0041] A working method of the welding positioning tool of the embodiment of the present application is as follows:

[0042] 1. After the first connecting block 1, the second connecting block 2, the inner supporting arc block 3 and the connecting column 4 are assembled (such as Figure 2 As shown), clamp the connecting column 4 on the three-jaw chuck of the external device;

[0043] 2. Place the pin 7 to be welded in the mounting hole 3b of the inner arc block 3, and then sleeve the cylinder body 6 to be welded on the inner arc block 3. During the sleeve insertion process, align the pin 7 with the radial hole 6a on the cylinder body 6 so that the radial hole 6a is sleeved on the pin 7. After the sleeve is completed (such as Figure 3As shown), the outer arc surface 3a of the inner arc block 3 plays a role in supporting the cylinder body 6, and the pin 7 plays a role in limiting the rotation of the cylinder body 6;

[0044] 3. Screw in the clamping bolt 52 of the clamping assembly 5, and the clamping bolt 52 presses the clamping block 51 against the outer peripheral wall of the cylinder body 6, thereby achieving radial positioning of the cylinder body 6;

[0045] Fourth, start the external equipment to weld the column pin 7 and the inner circumferential wall of the radial hole 6a together. During the welding process, the external equipment can drive the welding positioning tooling to rotate through the connecting column 4, and the column pin 7 also rotates coaxially;

[0046] 5. After welding is completed, the clamping bolt 52 is retracted and the cylinder body 6 is loosened, and then the cylinder body 6 (with the pin 7 welded thereto) is removed.

[0047] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

Claims

1. A welding positioning tool for an actuator cylinder, characterized in that: It comprises a first connecting block (1), a second connecting block (2), an inner supporting arc block (3), a connecting column (4) and a pressing assembly (5); The first connecting block (1) and the second connecting block (2) are connected to form an L-shaped structure; The inner arc block (3) is arranged on the first connection block (1), the inner peripheral wall of the cylinder body (6) to be welded is in contact with the outer arc surface (3a) of the inner arc block (3), and the inner arc block (3) is provided with a mounting hole (3b) along its radial direction, and the column pin (7) to be welded is respectively arranged in the mounting hole (3b) and the radial hole (6a) of the cylinder body (6); The connecting column (4) is arranged on the second connecting block (2), and the connecting column (4) and the mounting hole (3b) are arranged coaxially; The clamping assembly (5) is threadedly connected to the first connecting block (1) and is used to clamp the cylinder body (6) onto the inner supporting arc block (3).

2. The welding positioning tool for the actuator cylinder according to claim 1, characterized in that: The first connecting block (1) is provided with a positioning through slot (1a), one end of the second connecting block (2) is arranged in the positioning through slot (1a), and the first connecting block (1) and the second connecting block (2) are connected via a first connecting bolt (8).

3. The welding positioning tool according to claim 1, characterized in that: The first connection block (1) is vertically connected to the inner arc support block (3), and the first connection block (1) and the inner arc support block (3) are connected via a second connection bolt (9).

4. The welding positioning tool according to claim 3, characterized in that: The first connecting block (1) is provided with a supporting step surface (1b); along the length direction of the first connecting block (1), the supporting step surface (1b) is in contact with the side wall of the inner supporting arc block (3); and the clamping assembly (5) is located on a side of the inner supporting arc block (3) away from the supporting step surface (1b).

5. The welding positioning tool according to claim 1, characterized in that: The arc length of the outer arc surface (3a) is at least one quarter of the inner circumference length of the cylinder body (6).

6. The welding positioning tool according to any one of claims 1 to 5, characterized in that: The inner peripheral wall of the mounting hole (3b) is magnetically connected to the column pin (7) to be welded.

7. The welding positioning tool according to any one of claims 1 to 5, characterized in that: The clamping assembly (5) comprises a clamping block (51) and a clamping bolt (52); the clamping block (51) is provided with a U-shaped notch (51a), and the outer side wall of the clamping block (51) is in contact with the outer peripheral wall of the cylinder body (6); the clamping bolt (52) passes through the U-shaped notch (51a) and is threadedly connected to the matching threaded hole (1e) on the first connecting block (1), so as to clamp the clamping block (51) onto the outer peripheral wall of the cylinder body (6).

8. The welding positioning tool according to claim 7, characterized in that: The side wall of the pressing block (51) in contact with the cylinder body (6) is configured as an arc-shaped side wall, and the arc-shaped side wall is fitted on the outer peripheral wall of the cylinder body (6).

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