A tensioning positioning mechanism

Abstract

The application discloses a kind of expansion positioning mechanism in the field of welding positioning technology, it includes expansion positioning assembly and limit seat, expansion positioning assembly includes telescopic push rod, and movable expansion piece is provided on push rod;Limit seat includes fixedly arranged limit cylinder, push rod is arranged along limit cylinder telescopic, limit cylinder is provided with limit port, and limit port is limited expansion piece along push rod moving direction;Wherein, the expansion piece and the limit port and the push rod constitute push rod telescopic, realize the structure that the expansion piece extends or retracts limit port;When using, under the limitation of limit port, the height of expansion piece is invariable, due to the relative motion combination structure of telescopic rod and expansion piece, so that expansion piece makes extension or retraction movement in limit port, complete the change of the diameter of telescopic rod end positioning, realize the expansion of hole and fixed, provide more reliable fixed structure, can be positioned to multiple diameter holes on workpiece, more practical, more widely adaptable, positioning efficiency is high, realize safe production.

Description

Technical Field

[0001] This application relates to the field of welding positioning technology, specifically to a tensioning positioning mechanism. Background Technology

[0002] Welding is very common in industrial production. When assembling large workpieces by welding, it is necessary to fix various parts. Workpieces often have pin holes, positioning holes, and other similar holes. After the workpiece is initially fixed, a positioning mechanism is needed to extend positioning pins to abut against these holes to support or press the workpiece before welding. Since the diameter of the holes varies, the corresponding positioning pins need to be replaced for different hole diameters, which affects work efficiency. Moreover, after long-term use, the positioning pins will wear down, resulting in poor clamping force on the workpiece and making it easy for the workpiece to fall off during the positioning process, affecting production safety. Utility Model Content

[0003] The purpose of this application is to provide a tensioning and positioning mechanism to overcome the aforementioned defects caused by the prior art.

[0004] To achieve the above objectives, this application employs the following technical solution: This application discloses a tensioning positioning mechanism, which includes: A tensioning and positioning assembly includes a telescopic push rod with a movable tensioning element on the push rod; A limiting seat includes a fixedly disposed limiting cylinder, a push rod that extends and retracts along the limiting cylinder, the limiting cylinder having a limiting opening that limits the tensioning member along the moving direction of the push rod; The tensioning member, the limiting port, and the push rod constitute the push rod extension and retraction, realizing the structure of the tensioning member extending or retracting into the limiting port.

[0005] In a further embodiment of this application, a plurality of the tensioning elements are arranged in a circumferential array on the push rod, and the limiting port and the tensioning elements are matched and configured.

[0006] In a further embodiment of this application, a bushing is fixedly fitted onto the push rod body.

[0007] In a further embodiment of this application, the limiting seat further includes a housing, the housing is provided with a detachable cover plate, the limiting seat is fixedly connected to the housing, and the tensioning positioning component is disposed inside the housing.

[0008] In a further embodiment of this application, a limiting plate is provided at the end of the limiting cylinder away from the limiting seat.

[0009] In a further embodiment of this application, a driving component is fixedly mounted on the limiting seat, and the telescopic end of the driving component is fixedly connected to the push rod. In a further embodiment of this application, the push rod is provided with an inclined groove, and the tensioning member is slidably fitted with the groove.

[0010] In a further embodiment of this application, the tensioning component includes a slider and a tensioning block, wherein the connecting portion of the slider is slidably engaged with the groove, and the tensioning block is fixedly connected to the slider.

[0011] In a further embodiment of this application, the limiting cylinder and the limiting seat are arranged along the same center line.

[0012] The beneficial effects of this application are as follows: In this application, the positioning mechanism adopts a telescopic rod and a tensioning component slidably installed on it. During use, under the restriction of the limiting port, the height of the tensioning component remains unchanged. Due to the relative motion combination structure of the telescopic rod and the tensioning component, the tensioning component can extend or retract within the limiting port, thereby changing the positioning diameter of the end of the telescopic rod and achieving correct tensioning and fixing. This provides a more reliable fixing structure, which can position multiple diameters on the workpiece, making it more practical, more adaptable, and more efficient in positioning, thus ensuring safe production.

[0013] Multiple tensioning components are arranged in a circular array on the telescopic rod. During use, the tensioning components are used to tighten and fix the rod, which improves stability. Even if the tensioning components are worn, they can be quickly replaced and the rod can continue to be used. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the positioning mechanism in the embodiments of this application; Figure 2 This is a schematic diagram of the tensioning and positioning component in an embodiment of this application; Figure 3 This is a schematic diagram of the positioning mechanism after the tensioning positioning component is removed in the embodiments of this application; Figure 4 This is a schematic diagram of the tensioner in the embodiments of this application; Figure 5 This is a schematic diagram of the push rod in an embodiment of this application.

[0015] The components are as follows: 1. Tensioning and positioning assembly; 2. Limiting seat; 11. Driving component; 12. Push rod; 121. Slide groove; 13. Bushing; 3. Tensioning component; 21. Cover plate; 22. Limiting cylinder; 23. Limiting plate; 24. Housing; 25. Limiting port; 31. Tensioning block; 32. Gasket; 33. Slider; 34. Connecting part. Detailed Implementation

[0016] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use.

[0017] like Figures 1 to 3 As shown, this application provides an embodiment that discloses a tensioning positioning mechanism, which includes a tensioning positioning component 1 and a limiting seat 2. The tensioning positioning component 1 includes a telescopic push rod 12, and the push rod 12 is provided with a movable tensioning member 3. The limiting seat 2 includes a fixed limiting cylinder 22, a push rod 12 is arranged to extend and retract along the limiting cylinder 22, the limiting cylinder 22 is provided with a limiting port 25, and the limiting port 25 limits the tensioning member 3 along the moving direction of the push rod 12; The tensioning member 3, the limiting port 25, and the push rod 12 constitute the extension and retraction of the push rod 12, thereby enabling the tensioning member 3 to extend or retract into the limiting port 25.

[0018] In some embodiments, a tensioning positioning mechanism is specifically designed as follows, which can meet the needs of various diameters and has a better fixing effect.

[0019] As attached Figure 1 and Figure 3 As shown, in this embodiment, the limiting seat 2 also includes a housing 24, on which a detachable cover plate 21 is provided. The cover plate 21 covers the observation port on the housing 24. In case of malfunction, the cover plate 21 is opened first to observe whether the mechanism is malfunctioning. The limiting seat 2 is fixedly connected to the housing 24. The tensioning and positioning component 1 is located inside the housing 24 and is partially placed inside the limiting seat 2. During use, the push rod 12 needs to extend and retract inside the limiting cylinder 22. When the push rod 12 moves up and contacts the limiting plate 23 at the top of the limiting seat 2, it will notify the movement, that is, the maximum tensioning diameter of the device is reached, improving the safety of use.

[0020] As attached Figure 1 and Figure 2 As shown, in this embodiment, four tensioning elements 3 are provided on the push rod 12. The four tensioning elements 3 are arranged in a circumferential array on the push rod 12. The four limiting ports 25 are matched with the four tensioning elements 3. The number of tensioning elements 3 can be increased according to the actual use. Since the push rod 12 has a certain reciprocating frequency in the limiting cylinder 22, a fixed bushing 13 is sleeved on the push rod 12 to improve the wear resistance of the push rod 12. In this embodiment, the tensioning elements 3 slide obliquely on the push rod 12, and the tensioning elements 3 move radially along the push rod 12 by compression.

[0021] The specific plan is as follows (see attached). Figure 4 and attached Figure 5As shown, in this embodiment, the push rod 12 has an inclined groove 121 at its end. The groove 121 has a T-shaped cross-section, and the distance from the upper end of the groove 121 to the vertical central axis of the push rod 12 is less than the distance from the lower end of the groove 121 to the vertical central axis. The tensioning member 3 is slidably fitted with the groove 121. The tensioning member 3 includes a slider 33 and a tensioning block 31. The connecting part 34 of the slider 33 is slidably fitted with the groove 121, and the tensioning block 31 is fixedly connected to the slider 33 by bolts. Typically, a groove is also made on the slider 33. This mounting groove is for positioning and installing the tensioning block 31. After installation, part of the tensioning block 31 is exposed in the mounting groove. A gasket 32 ​​is provided between the tensioning block 31 and the inner wall of the mounting groove to increase stability.

[0022] To improve the stability of the mechanism, the design must ensure that the limiting cylinder 22 and the limiting seat 2 are set on the same vertical center line, that is, the limiting cylinder 22 is installed in the center on the limiting seat 2.

[0023] In some embodiments, a driving member 11 is fixed on the limiting seat 2, and the telescopic end of the driving member 11 is fixedly connected to the push rod 12. The driving member 11 can be a hydraulic cylinder or a pneumatic cylinder, etc., and the telescopic rod and the push rod 12 on the cylinder body are axially fixed.

[0024] In practical use, the workpiece is initially fixed. This initial workpiece is clamped and pressed by a mechanism, which is conventional existing technology and will not be described in detail here. The drive unit 11 is activated to move the push rod 12 upward. As the push rod 12 moves, under the constraint of the limit port 25, the longitudinal displacement of the push rod 12 is converted into the lateral displacement of the tensioning member 3 until the tensioning member 3 extends and abuts against the inner wall of the workpiece, thereby achieving tensioning and supporting the workpiece. This mechanism can adaptively tension the workpiece and has the function of preventing it from slipping out, which facilitates welding operations for workers and improves the safety of use.

[0025] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0026] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

Claims

1. A tensioning and positioning mechanism, characterized in that, include A tensioning and positioning assembly includes a telescopic push rod with a movable tensioning element on the push rod; A limiting seat includes a fixedly disposed limiting cylinder, a push rod that extends and retracts along the limiting cylinder, the limiting cylinder having a limiting opening that limits the tensioning member along the moving direction of the push rod; The tensioning member, the limiting port, and the push rod constitute the push rod extension and retraction, realizing the structure of the tensioning member extending or retracting into the limiting port.

2. The tensioning and positioning mechanism according to claim 1, characterized in that, Multiple tensioning elements are arranged in a circumferential array on the push rod, and the limiting port and the tensioning elements are matched.

3. The tensioning and positioning mechanism according to claim 1, characterized in that, A bushing is fixedly fitted onto the push rod body.

4. The tensioning and positioning mechanism according to claim 1, characterized in that, The limiting seat also includes a housing, on which a detachable cover plate is provided. The limiting seat is fixedly connected to the housing, and the tensioning positioning component is disposed inside the housing.

5. The tensioning and positioning mechanism according to claim 1, characterized in that, The end of the limiting cylinder away from the limiting seat is provided with a limiting plate.

6. The tensioning and positioning mechanism according to claim 1, characterized in that, A driving component is fixed on the limiting seat, and the telescopic end of the driving component is fixedly connected to the push rod.

7. The tensioning and positioning mechanism according to claim 1, characterized in that, The push rod is provided with an inclined sliding groove, and the tensioning member is slidably installed in the sliding groove.

8. The tensioning and positioning mechanism according to claim 7, characterized in that, The tensioning component includes a slider and a tensioning block. The connecting part of the slider is slidably engaged with the slide groove, and the tensioning block is fixedly connected to the slider.

9. The tensioning and positioning mechanism according to any one of claims 1 to 8, characterized in that, The limiting cylinder and the limiting seat are arranged along the same center line.

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