Clamping tool and valve processing system

Abstract

The application relates to the technical field of medical devices, and discloses a clamping tool and a valve processing system. The clamping tool comprises a mounting seat, a first clamping piece and a second clamping piece. The first clamping piece and the second clamping piece are arranged on the mounting seat. The first clamping piece and the second clamping piece are respectively adapted to clamp two ends of an assembly-to-be-processed. At least one of the first clamping piece and the second clamping piece is movably connected with the mounting seat, so that the first clamping piece and the second clamping piece can move relatively to fix or release the assembly-to-be-processed. Through relative movement of the first clamping piece and the second clamping piece, a support arm assembly and other assembly-to-be-processed can be clamped, so that various workpieces of the assembly-to-be-processed can be maintained in a pre-assembly state, and then the assembly-to-be-processed is welded or fixedly connected. After the welding or fixed connection is completed, the assembly-to-be-processed which is fixedly connected is taken down through relative movement of the first clamping piece and the second clamping piece. The operation is convenient, and the operation stability and consistency are good.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a clamping fixture and valve processing system. Background Technology

[0002] This section provides only background information relevant to this application and is not necessarily prior art.

[0003] Mitral valve clips are a minimally invasive transcatheter mitral valve regurgitation repair procedure, providing an alternative treatment option for high-risk patients with moderate to severe mitral regurgitation. The support arm assembly is a crucial component of the mitral valve clip, connecting the clamping arm to the pivot and rotating the clamping arm to achieve the opening and closing action, ensuring proper and smooth clamping of the valve leaflet requiring repair during the procedure. The support arm assembly typically consists of a support arm, an anterior swivel arm, and a posterior swivel arm, which are welded together. Due to the small size of the support arm, anterior swivel arm, and posterior swivel arm, and the high precision required between the components, the welding process of the support arm assembly usually has to be done manually. However, manual operation is not only inefficient but also results in unstable welding, poor weld consistency, and ultimately, problems such as product breakage at the weld joint, failure to pass fatigue tests, and inadequate corrosion and wear resistance. Summary of the Invention

[0004] The purpose of this application is to at least solve the problems of low welding success rate and poor welding consistency in the welding of the mitral valve clip support arm assembly, which requires manual hand-held welding. This purpose is achieved through the following technical solution: The first aspect of this application provides a clamping fixture including a mounting base, a first clamping member and a second clamping member. Both the first clamping member and the second clamping member are disposed on the mounting base. The first clamping member is adapted to clamp one end of the part to be assembled, and the second clamping member is adapted to clamp the other end of the part to be assembled. At least one of the first clamping member and the second clamping member is movably connected to the mounting base so that the first clamping member and the second clamping member can move relative to each other to fix or release the part to be assembled.

[0005] According to the clamping fixture of this application, by moving the first clamping member and the second clamping member relative to each other, the support arm assembly waiting to be assembled can be clamped, so that each workpiece of the assembly to be assembled can be maintained in a pre-assembled state, and then the assembly to be assembled can be fixedly connected by welding or other means. After the welding or other fixed connection is completed, the assembly to be assembled can be removed by moving the first clamping member and the second clamping member relative to each other. The operation is convenient, and the operation stability and consistency are better than manual handling, which improves the welding efficiency and success rate of the assembly to be assembled.

[0006] In addition, the clamping fixture according to this application may also have the following additional technical features: In some embodiments of this application, one end of the second clamping member is rotatably connected to the mounting base, and the other end of the second clamping member is used to clamp the component to be assembled.

[0007] In some embodiments of this application, the clamping fixture further includes a first reset component connected between the second clamping member and the mounting base, the first reset component causing the second clamping member to tend to move toward the first clamping member.

[0008] In some embodiments of this application, the mounting base is provided with a first rotating shaft, and one end of the second clamping member is rotatably connected to the first rotating shaft; The first reset assembly includes a torsion spring, which is sleeved on the first rotating shaft and located between the second clamping member and the mounting base. One end of the torsion spring is connected to the mounting base, and the other end of the torsion spring is connected to the second clamping member.

[0009] In some embodiments of this application, the mounting base is provided with a stop member, which is used to stop the second clamping member to limit the rotation of the second clamping member toward the first clamping member.

[0010] In some embodiments of this application, the mounting base is provided with a first rotating shaft, and one end of the second clamping member is rotatably connected to the first rotating shaft; A limiting adjustment member is provided on the first rotating shaft. The limiting adjustment member abuts against the side of the second clamping member away from the mounting base. The limiting adjustment member can move along the axial direction of the first rotating shaft to adjust the position of the second clamping member relative to the stop member along the axial direction of the first rotating shaft.

[0011] In some embodiments of this application, the first clamping member is provided with a first clamping groove, which is used to have an interference fit with one end of the part to be assembled. And / or, the second clamping member is provided with a second clamping groove, which is used to accommodate the other end of the component to be assembled.

[0012] In some embodiments of this application, the first clamping member is provided with a first clamping groove, which is used to clamp the first workpiece with a through opening of the assembly to be assembled. The first clamping member is provided with a positioning hole, which communicates with the first clamping groove. The clamping fixture also includes a limiting mechanism, one end of which passes through the positioning hole and is used to abut against the second workpiece of the part to be assembled, which is inserted into the through hole.

[0013] In some embodiments of this application, the limiting mechanism includes a limiting member and a second reset component. One end of the second reset component is connected to the mounting base, and the other end of the second reset component is connected to the limiting member. The limiting member passes through the positioning hole and is used to abut against the second workpiece. The second reset component is used to reset the limiting member after it has moved and to apply a force to the limiting member.

[0014] In some embodiments of this application, the mounting base is provided with a positioning platform, which is disposed between the first clamping member and the second clamping member, and is used to support the component to be assembled.

[0015] In some embodiments of this application, the mounting base is provided with a first magnetic suction member, the first magnetic suction member is positioned corresponding to the first clamping member, the first clamping member is magnetically fixed by the first magnetic suction member, and under the stress action during the connection process of the parts to be assembled, the first clamping member can overcome the attraction force of the first magnetic suction member and move relative to the mounting base.

[0016] In some embodiments of this application, the mounting base is provided with a mounting groove, the first magnetic suction member is provided corresponding to the mounting groove, the first clamping member is magnetically attracted to the mounting groove, and under the stress of the connection process of the parts to be assembled, the first clamping member can translate along the mounting groove.

[0017] In some embodiments of this application, the first clamping member is rotatably disposed in the mounting groove, the part of the first clamping member connected to the part to be assembled is the first end, the part of the second clamping member connected to the part to be assembled is the second end, and the first end and the second end are offset when the first clamping member and the second clamping member are clamping the part to be assembled.

[0018] In some embodiments of this application, the first clamping member is provided with a first clamping groove, the cross-section of the first clamping groove is arc-shaped, the opening of the first clamping groove faces the second clamping member, and the shortest distance between the inner wall of the first clamping member and the outer wall of the first clamping member decreases along the direction from the opening of the first clamping groove to the bottom of the first clamping groove.

[0019] In some embodiments of this application, the mounting base is provided with a second magnetic element, which is used to magnetically connect with the second clamping element.

[0020] In some embodiments of this application, the clamping fixture further includes a base, and connecting members are respectively provided on opposite sides of the mounting base. The mounting base is detachably connected to the base through the connecting member on either side.

[0021] The second aspect of this application provides a valve processing system including a valve clamp and a clamping fixture as described in this application or any embodiment thereof. The valve clamp includes a support arm and a front rotating arm and a rear rotating arm respectively disposed at both ends of the support arm. One of the first clamping member and the second clamping member is used to clamp the front rotating arm, and the other is used to clamp the rear rotating arm. Attached Figure Description

[0022] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 A schematic diagram of a support arm assembly according to some embodiments of this application is shown; Figure 2 A schematic diagram of the structure of a clamping tool according to some embodiments of this application is shown; Figure 3 for Figure 2 Enlarged structural diagram at point A in the diagram; Figure 4 A schematic diagram of the back of the mounting base of the clamping fixture; Figure 5 for Figure 4 Enlarged schematic diagram of the structure at point B in the diagram; Figure 6 The schematic diagram illustrates a mounting base of some embodiments of this application mounted on a base; Figure 7 A schematic diagram of a clamping fixture according to other embodiments of this application is shown; Figure 8 An exploded view schematically illustrating a clamping fixture according to other embodiments of this application is shown. Figure 9 for Figure 7 A magnified view of a portion of the image.

[0023] The attached figures are labeled as follows: 1. Support arm assembly; 11. Support arm; 12. Front swivel arm; 121. Extension slot; 13. Rear swivel arm; 131. Through-hole; 10. Clamping fixture; 100. Mounting base; 101. Front view; 102. Back view; 103. Top surface; 104. Limiting hole; 105. Groove; 106. Clearance groove; 107. Guide groove; 110. Mounting groove; 111. Large end; 112. Small end; 113. Spacer; 120. Connecting piece; 121. Positioning shaft; 200, First clamping component; 201, First clamping groove; 202, Groove opening; 203, Groove bottom; 300, Second clamping component; 301, Second clamping groove; 302, Positioning hole; 310, First rotating shaft; 311, Limit adjustment component; 400. First reset assembly; 410. Torsion spring; 500. Stop components; 600, Limiting mechanism; 610, Support component; 611, Guide shaft; 620, Limiting component; 621, Abutment shaft; 630, Second reset assembly; 631, Compression spring; 700, Positioning station; 800, base; 910. First magnetic component; 920. Second magnetic component. Detailed Implementation

[0024] Exemplary embodiments of this application will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of this application and to fully convey the scope of this application to those skilled in the art.

[0025] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “” used herein may also indicate the inclusion of the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated, unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0026] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0027] For ease of description, spatial relative terms can be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, then an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. In the text, the Z-axis direction is defined as up and down, with the positive Z-axis direction referring to up and the negative Z-axis direction referring to down. The X-axis direction is defined as left and right, with the positive X-axis direction referring to right and the negative X-axis direction referring to left. The positive Y-axis direction is defined as forward and the negative Y-axis direction as backward.

[0028] Example 1 like Figures 1 to 3 As shown, according to the embodiments of this application, this embodiment proposes a clamping fixture 10, including a mounting base 100, a first clamping member 200 and a second clamping member 300. The first clamping member 200 and the second clamping member 300 are both disposed on the mounting base 100. The first clamping member 200 is adapted to clamp one end of the part to be assembled, and the second clamping member 300 is adapted to clamp the other end of the part to be assembled. The first clamping member 200 and / or the second clamping member 300 are movably connected to the mounting base 100 so that the first clamping member 200 and the second clamping member 300 can move relative to each other to fix or release the part to be assembled.

[0029] Please refer to Figure 1 The component to be assembled in this embodiment can be used for welding the support arm assembly 1 of the mitral valve clip. Please refer to... Figure 1 The support arm assembly 1 includes a support arm 11, a front rotating arm 12, and a rear rotating arm 13. One end of the support arm 11 is connected to the front rotating arm 12, and the other end of the support arm 11 is connected to the rear rotating arm 13. During the manufacturing process of the support arm assembly 1, the front rotating arm 12, the support arm 11, and the rear rotating arm 13 need to be welded and fixed. It can be understood that in other embodiments, the clamping fixture 10 in this embodiment can also be applied to other workpieces that need to be clamped and welded.

[0030] like Figure 2 As shown, the mounting base 100 provides a mounting position for the first clamping member 200 and the second clamping member 300. The mounting base 100 can be a plate-shaped, block-shaped, or other structure. The first clamping member 200 and the second clamping member 300 can be mounted on the side wall of the mounting base 100.

[0031] like Figure 2 As shown, the first clamping member 200 and / or the second clamping member 300 are movably connected to the mounting base 100.

[0032] In some implementations, the first clamping member 200 is movably connected to the mounting base 100, and the second clamping member 300 is fixedly connected to the mounting base 100. Specifically, the first clamping member 200 can be slidably connected to the mounting base 100 or rotatably connected to the mounting base 100. The second clamping member 300 can be welded, threaded, or integrally connected to the mounting base 100. Integral connection means that the second clamping member 300 and the mounting base 100 are integrally formed by laser cutting.

[0033] In other implementations, the second clamping member 300 is movably connected to the mounting base 100, and the first clamping member 200 is fixedly connected to the mounting base 100. Specifically, the second clamping member 300 can be slidably connected to the mounting base 100 or rotatably connected to the mounting base 100. The first clamping member 200 can be welded, threaded, or integrally connected to the mounting base 100.

[0034] In some other implementations, both the first clamping member 200 and the second clamping member 300 are movably connected to the mounting base 100. The movable connection method between the first clamping member 200 and the mounting base 100 and the movable connection method between the second clamping member 300 and the mounting base 100 can be the same or different. For example, both the first clamping member 200 and the second clamping member 300 can be slidably connected or rotatably connected to the mounting base 100. Alternatively, one of the first clamping member 200 and the second clamping member 300 can be slidably connected to the mounting base 100, while the other is rotatably connected to the mounting base 100.

[0035] The relative mobility of the first clamping member 200 and the second clamping member 300 means that the first clamping member 200 and the second clamping member 300 can move closer to each other or further apart. During the process of the first clamping member 200 and the second clamping member 300 moving closer to each other, the distance between them decreases, and the first clamping member 200 and the second clamping member 300 clamp the support arm assembly 1, maintaining a relatively stable pre-assembled state between two or more workpieces of the pre-assembled support arm assembly 1.

[0036] As the first clamping member 200 and the second clamping member 300 move away from each other, the distance between the first clamping member 200 and the second clamping member 300 increases, so as to facilitate the removal of the support arm assembly 1 from the clamping fixture 10.

[0037] In this embodiment, the clamping fixture 10 can first clamp the front rotating arm 12 with the first clamping member 200 and the support arm 11 with the second clamping member 300, clamping the support arm assembly 1 composed of the front rotating arm 12 and the support arm 11, and keeping the front rotating arm 12 and the support arm 11 in a pre-assembled state. In this state, the support arm 11 and the front rotating arm 12 can be welded together by welding equipment. Then, the rear rotating arm 13 is clamped with the second clamping member 300, and the first clamping member 200 clamps the welded support arm 11 and the front rotating arm 12, clamping the rear rotating arm 13 and the support arm assembly 1 composed of the welded support arm 11 and the front rotating arm 12, and keeping the rear rotating arm 13 and the support arm 11 with the welded front rotating arm 12 in a pre-assembled state. At this time, the welding connection between the support arm 11 and the rear rotating arm 13 can be completed.

[0038] In this way, the first clamping member 200 and the second clamping member 300 can move relative to each other, so that the first clamping member 200 and the second clamping member 300 can move towards each other to clamp the support arm assembly 1, so as to facilitate welding of the support arm assembly 1. After welding is completed, the first clamping member 200 and the second clamping member 300 can move away from each other to release the support arm assembly 1, so as to facilitate the removal of the support arm assembly 1.

[0039] like Figure 2 As shown, one end of the second clamping member 300 is rotatably connected to the mounting base 100, and the other end of the second clamping member 300 is used to clamp the support arm assembly 1. The first clamping member 200 is fixedly connected to the mounting base 100.

[0040] The second clamping member 300 is rotatably connected to the mounting base 100 via the first rotating shaft 310. Specifically, the second clamping member 300 may be rotatably connected to the first rotating shaft 310, while the first rotating shaft 310 may be fixedly connected to the mounting base 100. For example, in one embodiment, the first rotating shaft 310 and the mounting base 100 are connected by a thread. Specifically, the mounting base 100 may have a threaded hole, and the inner end of the first rotating shaft 310 (the end closest to the mounting base 100) may have an external thread, with the inner end of the first rotating shaft 310 threaded into the threaded hole of the mounting base 100. The second clamping member 300 has a shaft hole, and the second clamping member 300 is sleeved on the first rotating shaft 310 through the shaft hole, allowing the second clamping member 300 to rotate about the axis of the first rotating shaft 310. It is understood that in other embodiments, the second clamping member 300 is fixedly connected to the first rotating shaft 310, while the first rotating shaft 310 is rotatably connected to the mounting base 100.

[0041] like Figure 2 and Figure 3As shown, the clamping fixture 10 also includes a first reset component 400, which is located between the second clamping member 300 and the mounting base 100. The first reset component 400 is connected to the second clamping member 300 and the mounting base 100 respectively.

[0042] The first reset component 400 can also be an elastic element. The second clamping element 300 can rotate to a position away from the first clamping element 200 under the action of an external force. During the rotation of the second clamping element 300, the first reset component 400 undergoes elastic deformation. After the external force is removed, the second clamping element 300 can reset under the action of the elastic force of the first reset component 400 or apply a clamping force to the support arm assembly 1. Specifically, the elastic element can be a compression spring, a tension spring, a torsion spring 410, or a spring sheet, etc. It can be understood that in other embodiments, the first reset component 400 can be a power drive component, such as a motor working in conjunction with a transmission mechanism, to drive the second clamping element 300 to rotate and reset.

[0043] In this way, by rotating the second clamping member 300 to the mounting base 100, the operator can clamp and release the support arm assembly 1 by rotating the second clamping member 300, improving the convenience of the operator in assembling and disassembling the support arm assembly 1 on the clamping fixture 10. After the second clamping member 300 is rotated away from the first clamping member 200, on the one hand, the first reset component 400 can reset the second clamping member 300, so that the operator can assemble and disassemble the support arm assembly 1 on the clamping fixture 10. On the other hand, when the second clamping member 300 and the first clamping member 200 cooperate to clamp the support arm assembly 1, the first reset component 400 can make the second clamping member 300 apply a clamping force to the support arm assembly 1, thereby preventing the support arm assembly 1 from falling off the first clamping member 200 and the second clamping member 300.

[0044] like Figure 3 As shown, the first reset assembly 400 includes a torsion spring 410, which is sleeved on the first rotating shaft 310 and located between the second clamping member 300 and the mounting base 100. One end of the torsion spring 410 is connected to the mounting base 100, and the other end of the torsion spring 410 is connected to the second clamping member 300.

[0045] The main spiral part of the torsion spring 410 can be sleeved on the first rotating shaft 310. The two ends of the main spiral part are respectively connected to torsion arms. One end of the torsion arm can be installed in the limiting hole 104 of the mounting base 100, and the other end of the torsion arm can be installed on the second clamping member 300. In this way, when the second clamping member 300 is moved, the torsion spring 410 will generate torque to provide the second clamping member 300 with a blocking force to prevent the support arm assembly 1 from moving.

[0046] like Figure 3As shown, the clamping fixture 10 also includes a limiting adjustment member 311, which is movably connected to the outer end (the end away from the mounting base 100) of the first rotating shaft 310. For example, in one embodiment, the limiting adjustment member 311 is threadedly connected to the first rotating shaft 310, and its position on the first rotating shaft 310 can be adjusted by screwing it in or out. The limiting adjustment member 311 is in contact with the side wall of the second clamping member 300 away from the mounting base 100. The second clamping member 300 has a shaft hole at its end near the first rotating shaft 310, and is sleeved on the first rotating shaft 310 through the shaft hole, allowing it to slide on the first rotating shaft 310. The two axial ends of the torsion spring 410 are in contact with the side wall of the second clamping member 300 and the mounting base 100, respectively.

[0047] Therefore, by rotating the limiting adjustment member 311, the limiting adjustment member 311 can be pressed against the second clamping member 300, and the second clamping member 300 can compress the torsion spring 410, so that the limiting adjustment member 311 can adjust the tension of the torsion spring 410, thereby facilitating the limiting of the second clamping member 300 and preventing the second clamping member 300 from shaking.

[0048] Please return Figure 2 The clamping fixture 10 also includes a stop 500, which is connected to the mounting base 100. The stop 500 is located on the side of the first rotating shaft 310 away from the first clamping member 200. The stop 500 is used to stop the second clamping member 300 to limit the rotation of the second clamping member 300 toward the first clamping member 200.

[0049] The stop 500 is welded, threaded, or riveted to the mounting base 100. The stop 500 is spaced apart from the first rotating shaft 310. The stop 500 and the first rotating shaft 310 have a certain distance between them. The stop 500 is at least partially located on one side of the front surface 101 of the mounting base 100. The stop 500 extends axially toward the first rotating shaft 310. The clamping fixture 10 includes a clamping state and a released state. When the clamping fixture 10 is in the clamping state, the second clamping member 300 is located on the side of the stop 500 closer to the first clamping member 200. When the fixture is in the released state, the second clamping member 300 is located on the side of the stop 500 away from the first clamping member 200, and the second clamping member 300 is in contact with the stop 500. The stop 500 can stop the second clamping member 300 to prevent it from resetting.

[0050] The stop member 500 can be disposed on the left or right side of the mounting base 100. The stop member 500 can extend along the front-rear direction of the mounting base 100. The second clamping member 300 on the front side 101 of the mounting base 100 and the second clamping member 300 on the back side 102 of the mounting base 100 can be correspondingly disposed at the same end of the mounting base 100, so that the second clamping members 300 on the two sides can share a single stop member 500. The stop member 500 can be fastened to the mounting base 100 by bolts or the like. Furthermore, a groove 105 can be provided on the left or right side of the mounting base 100, and the stop member 500 can be disposed within the groove 105.

[0051] Therefore, by setting the stop 500 on the side of the first rotating shaft 310 away from the first clamping member 200, when the clamping fixture 10 is in the released state, the stop 500 can restrict the second clamping member 300 from rotating toward the first clamping member 200, thereby preventing the second clamping member 300 from resetting during the assembly or disassembly of the support arm assembly 1 and affecting the assembly and disassembly of the support arm assembly 1, thus improving the ease of assembly and disassembly of the support arm assembly 1.

[0052] On the other hand, by adjusting the position of the second clamping member 300 relative to the stop member 500 along the axial direction of the first rotation axis 310, the second clamping member 300 can be switched between a position limited by the stop member 500 and a position disengaged from the stop member 500. For example, in the axial direction of the first rotation axis 310, by unscrewing the limiting adjustment member 311, the second clamping member 300 moves away from the mounting base 100 under the axial force of the torsion spring 410, and moves to the outside of the end of the stop member 500, thereby disengaging the second clamping member 300 from the restriction of the stop member 500. In the axial direction of the first rotation axis 310, by screwing in the limiting adjustment member 311, the limiting adjustment member 311 presses the second clamping member 300 toward the mounting base 100, and moves the second clamping member 300 to the inside of the end of the stop member 500, thereby stopping the second clamping member 300 by the stop member 500.

[0053] like Figure 3 As shown, the first clamping member 200 is provided with a first clamping groove 201, which is used to accommodate one end of the support arm assembly 1 and to limit one end of the support arm assembly 1.

[0054] The side wall of the first clamping groove 201 has a slot 202 that is generally facing the second clamping member 300. One end of the support arm assembly 1 is inserted into the first clamping groove 201. The side wall of the support arm assembly 1 fits against the slot 202. The first clamping groove 201 can restrict all degrees of freedom of the front rotating arm 12 except for translational movement towards or away from the mounting base 100, so that the first clamping member 200 can clamp one end of the support arm assembly 1, which improves the ease of disassembly and assembly of the support arm assembly 1 and the clamping stability of the support arm assembly 1.

[0055] The translation of the front swivel arm 12 toward or away from the mounting base 100 can be referred to as follows: Figure 2 The translation of the front rotating arm 12 along the Y-axis is explained below. Under the constraint of the first clamping groove 201, the second clamping member 300 can only translate along the Y-axis, and the degrees of freedom in other directions are restricted. like Figure 3 As shown, the second clamping member 300 is provided with a second clamping groove 301, which is used to accommodate the other end of the support arm assembly 1.

[0056] The opening of the second clamping groove 301 is oriented towards the first clamping member 200. The second clamping member 300 is used to limit the support arm assembly 1 on the X-axis. The support arm assembly 1 is installed between the first clamping member 200 and the second clamping member 300. The first clamping member 200 and the second clamping member 300 can clamp the two ends of the support arm assembly 1. Under the elastic force of the first reset component 400, the first clamping member 200 and the second clamping member 300 clamp the support arm assembly 1, thereby limiting the support arm assembly 1 in the X-axis direction.

[0057] like Figure 2 and Figure 4 As shown, a first clamping member 200 and a second clamping member 300 can be respectively provided on two opposite sides of the mounting base 100. For ease of description, the mounting base 100 is defined as including a front side 101 and a back side 102, with one set of first clamping members 200 and second clamping members 300 mounted on the front side 101, and another set of first clamping members 200 and second clamping members 300 mounted on the back side 102.

[0058] Taking the clamping fixture 10 applied to the support arm assembly 1 as an example, such as Figure 2 As shown, on the front side 101 of the mounting base 100, the first clamping member 200 and the second clamping member 300 can be used to clamp the front swivel arm 12 and the support arm 11, so as to facilitate the welding connection between the front swivel arm 12 and the support arm 11.

[0059] like Figure 4As shown, on the back side 102 of the mounting base 100, the first clamping member 200 and the second clamping member 300 can be used to clamp the rear rotating arm 13 and the support arm 11 and the front rotating arm 12 after welding, so that the rotating arm 13 can be welded to the support arm 11 after welding.

[0060] In this way, after the front swivel arm 12 and the support arm 11 are welded on the front side 101 of the mounting base 100, the rear swivel arm 13 and the support arm 11 are welded on the back side 102 of the mounting base 100 by flipping the mounting base 100, so that the support arm 11 can be welded on a tooling, which increases the convenience of the support arm 11 processing.

[0061] Please return Figure 1 In the support arm assembly 1 of the rear rotating arm 13 and the support arm 11, the rear rotating arm 13 is provided with a through hole 131. One end of the support arm 11 is inserted into the through hole 131, and the support arm 11 and the rear rotating arm 13 are welded in this inserted state. Since the support arm 11 and the rear rotating arm 13 need to have high fitting accuracy, if the support arm 11 moves relative to the rear rotating arm 13 along the through hole 131, it will affect the quality of the welded support arm assembly 1.

[0062] Based on this, such as Figure 4 , Figure 5 As shown, the first clamping member 200 is provided with a first clamping groove 201, which is used to clamp the support arm assembly 1 with the through opening 131. The first clamping member 200 is provided with a positioning hole 302, which communicates with the first clamping groove 201. The clamping fixture 10 also includes a limiting mechanism 600, one end of which passes through the positioning hole 302 and is used to abut against the support arm 11 of the support arm assembly 1 inserted into the through opening 131.

[0063] When the support arm assembly 1 is in the first clamping groove 201, the through-hole 131 of the support arm assembly 1 is positioned opposite to the positioning hole 302 of the first clamping member 200. The limiting mechanism 600 is located on the side of the second clamping member 300 away from the first clamping member 200. The limiting mechanism 600 can partially extend into the positioning hole 302 and abut against the end of the support arm 11 inserted into the through-hole 131 to prevent the support arm 11 from passing through the through-hole 131.

[0064] like Figure 4 , Figure 5 As shown, the limiting mechanism 600 includes a limiting member 620 and a second reset component 630. One end of the second reset component is connected to the mounting base 100, and the other end of the second reset component 630 is connected to the limiting member 620. The limiting member 620 passes through the positioning hole 302 and is used to abut against the support arm 11. The second reset component 630 is used to apply force to the limiting member 620.

[0065] In this embodiment, the second reset component 630 is a compression spring 631. The mounting base 100 is provided with a support member 610, which can be fixed to the mounting base 100 by means of bolt connection, welding, etc. A guide shaft 611 is provided on the support member 610. The guide shaft 611 is used to install the compression spring 631 and limit the movement of the limiting block in the Z-axis direction. The compression spring 631 is used to provide an elastic force to the limiting member 620 toward the first clamping member 200.

[0066] The limiting member 620 has an abutment shaft 621 on the side opposite to the support member 610. The abutment shaft 621 abuts against one end of the support arm 11 to restrict the movement of the support arm 11 in the X-axis direction. A guide groove 107 is provided on the mounting base 100, which is arranged along the X-axis direction. Both the limiting member 620 and the support member 610 are located within the guide groove 107. The limiting member 620 is slidably connected to the guide groove 107. Under the limiting action of the guide groove 107 and the guide shaft 611, the limiting member 620 can only move in the X-axis direction. It can be understood that in other embodiments, the second reset component can be a power drive component, such as a motor cooperating with a transmission mechanism for movement; the second reset component can also be an elastic component, specifically a spring.

[0067] During the assembly of the rear swivel arm 13 and the support arm 11, the rear swivel arm 13 is first inserted into the first clamping groove 201, then one end of the support arm 11 is inserted into the through-hole 131 of the rear swivel arm 13, and then the abutment shaft 621 of the limiting member 620 abuts against the rear end of the support arm 11. When the clamping fixture 10 needs to replace or disassemble the support arm assembly 1, the limiting member 620 can be pulled to move closer to the support member 610, thereby realizing the disassembly of the support arm assembly 1.

[0068] like Figure 4 As shown, a positioning platform 700 is provided on the mounting base 100. The positioning platform 700 is located between the first clamping member 200 and the second clamping member 300, and the positioning platform 700 is in contact with the side wall of the support arm assembly 1.

[0069] When the first clamping member 200 and the second clamping member 300 clamp the support arm assembly 1, the positioning stage 700 can be used to support the side wall of the support arm assembly 1. The thickness of the positioning stage 700 is the same as the gap between the first clamping member 200 or the second clamping member and the mounting base 100. The thickness of the positioning stage 700 refers to the distance between the two side walls of the positioning stage 700 in the Y-axis direction.

[0070] In this way, by supporting the support arm 11 with the positioning table 700, the positioning table 700 can limit the displacement of the support arm 11 in the negative Y-axis direction, reducing the possibility of misalignment between the support arm 11 and the front rotating arm 12 or the rear rotating arm 13 due to the movement of the support arm 11.

[0071] like Figure 4 As shown, the mounting base 100 has a clearance groove 106, and the first rotating shaft 310 and the first reset assembly 400 are located in the clearance groove 106, thereby freeing up the installation space of the first reset assembly 400 and making the spatial arrangement of the clamping fixture 10 more compact.

[0072] like Figure 6 As shown, the clamping fixture 10 also includes a base 800. Connectors 120 are respectively provided on opposite sides of the mounting base 100. The mounting base 100 is detachably connected to the base 800 through the connector 120 on either side.

[0073] The connector 120 includes one or more spaced positioning shafts 121. The base 800 has positioning holes 302. The positioning shafts 121 are inserted into the positioning holes 302 to achieve a detachable connection between the mounting base 100 and the base 800. Since connectors 120 are provided on both sides of the mounting base 100, the welding position can be switched by adjusting the installation direction of the mounting base 100.

[0074] In some embodiments, connectors 120 can be provided on the top surface 103 and the bottom surface of connector 120 respectively. After the support arm assembly 1 is clamped on the mounting base 100, one side of the support arm assembly 1 can be welded while the mounting base 100 is upright. Then, the mounting base 100 can be inverted to weld the other side of the support arm assembly 1. This eliminates the need to disassemble the support arm assembly 1. Simply inverting the mounting base 100 is sufficient to complete the double-sided welding of the support arm assembly 1. This operation is convenient, reduces clamping errors caused by repeated clamping, and improves processing efficiency.

[0075] Example 2 like Figure 7 and Figure 8 As shown, the difference between this embodiment and Embodiment 1 is that during the welding process of the support arm assembly 1, the first clamping member 200 can move relative to the mounting base 100 to adapt to the deformation of the support arm assembly 1.

[0076] It should be noted that the support arm 11 of the support arm assembly 1 is generally made of shape memory alloy. During the welding process of the support arm 11, the support arm 11 easily returns from a bent state to an elongated state, increasing the straight-line distance between the two ends of the support arm 11. However, the relative positions of the first clamping member 200 and the second clamping member 300 remain unchanged, thereby increasing the stress between the support arm 11 and the first clamping member 200 and the second clamping member 300. Consequently, the support arm 11 is easily bent due to excessive pressure from the second clamping member 300. It is understood that the support arm 11 can also be other workpieces whose length can be extended during the welding process. To address this problem, the embodiment proposes a clamping fixture 10, which allows the first clamping member 200 to translate relative to the mounting base 100 during the welding process of the support arm assembly 1, thereby reducing the possibility of the support arm 11 being excessively bent.

[0077] like Figure 7 , Figure 8 As shown, the clamping fixture 10 includes a first magnetic suction member 910, which is mounted on the mounting base 100. The position of the first magnetic suction member 910 corresponds to the position of the first clamping member 200. The side wall of the first clamping member 200 is in contact with the first magnetic suction member 910, and the first magnetic suction member 910 and the first clamping member 200 are connected by magnetic force. During the deformation of the support arm 11, after the first clamping member 200 is subjected to the deformation force of the support arm 11, the first clamping member 200 can overcome the attraction force of the first magnetic suction member 910 and move on the first magnetic suction member 910.

[0078] The first magnetic attractor 910 can be a magnet or an electromagnet, which is mounted on the mounting base 100 and positioned corresponding to the first clamping member 200. The first clamping member 200 can be partially or entirely made of magnet or ferrous material, and can be attracted and positioned by the first magnetic attractor 910. During the welding process of the support arm 11, due to the elongation of the support arm 11, the stress on the first clamping member 200 increases under the constraint of the first clamping member 200 and the second clamping member 300. In this case, the first clamping member 200 can overcome the attraction force of the first magnetic attractor 910 and move to adapt to the increased stress on the first clamping member 200, reducing the possibility of the support arm 11 being bent and deformed.

[0079] like Figures 7 to 9 As shown, the mounting base 100 has a mounting groove 110, and the first magnetic member 910 is installed in the mounting groove 110, magnetically attracted to the bottom wall of the mounting groove 110. Figure 9As shown, the mounting groove 110 includes a spacer 113. The maximum width of the spacer 113 in the Z-axis direction is greater than the maximum width of the first clamping member 200 in the Z-axis direction. The sidewall of the spacer 113 in the Z-axis direction is spaced apart from the sidewall of the first clamping member 200 in the Z-axis direction. The spacer 113 extends along the X-axis direction, and the first clamping member 200 can move in the spacer 113 along the X-axis direction.

[0080] The first magnetic chuck 910 is located between the first clamping member 200 and the bottom wall of the mounting groove 110. One side wall of the first magnetic chuck 910 is in contact with the bottom wall of the mounting groove 110, and the other side wall of the first magnetic chuck 910 is in contact with the side wall of the first clamping member 200 in the negative Y-axis direction. The slot width of the spacer 113 in the Z-axis direction is greater than the maximum width of the first clamping member 200 in the Z-axis direction, so as to allow the first clamping member 200 to translate within the mounting groove 110. In one embodiment, the mounting groove 110 can be an arc-shaped hole with a large diameter at one end and a small diameter at the other end. The end of the mounting groove 110 with a larger area is defined as the large end 111, and the end of the mounting groove 110 with a smaller area is defined as the small end 112. The two ends of the spacer 113 are connected to the large end 111 and the small end 112, respectively. The large end 111 (the end with a larger area) of the mounting groove 110 is located close to the second clamping member 300, and the small end 112 (the end with a smaller area) of the mounting groove 110 is located away from the second clamping member 300.

[0081] The initial position of the first clamping member 200 is located at the large end 111 of the mounting groove 110. During the welding process of the support arm assembly 1, as the support arm 11 elongates, under the restriction of the first clamping member 200 and the second clamping member 300, the stress of the support arm 11 on the first clamping member 200 increases. Under the stress of the support arm 11, the first clamping member 200 can overcome the attraction force of the first magnetic suction member and move towards the small end 112 of the mounting groove 110, thereby reducing the stress on the support arm assembly 1 and reducing the possibility of the support arm assembly 1 being bent and deformed.

[0082] like Figure 9 As shown, the first clamping member 200 is inserted into the mounting groove 110 and can rotate within the mounting groove 110. The first clamping member 200 has a first clamping groove 201. The opening 202 of the first clamping groove 201 faces the second clamping member 300. The support arm 11 is at least partially inclined relative to the orientation of the opening 202 of the first clamping groove 201. The width of the opening 202 in the Z-axis direction is greater than the width of the support arm 11 in the Z-axis direction.

[0083] The support arm 11 is initially curved, and at least part of the support arm 11 is inclined relative to the opening 202 of the first clamping groove 201. This means that the tangent L2 at the bend of the support arm 11 and the parallel line L1 parallel to the orientation of the opening 202 form a certain angle α1. The width of the opening 202 is greater than the width of the support arm 11, meaning that the sidewall of the opening 202 in the z-axis direction is spaced apart from the sidewall of the support arm 11 in the z-axis direction, and there is a certain distance between the sidewall of the opening 202 in the z-axis direction and the outer wall of the sidewall of the support arm 11 in the z-axis direction.

[0084] During the welding process of the support arm assembly 1, the support arm 11 extends towards both ends in the length direction due to the high temperature of welding. The support arm 11 is at least partially inclined relative to the orientation of the groove 202 of the first clamping groove 201, so that the support arm 11 can provide the first clamping member 200 with stress that is inclined relative to the orientation of the groove 202. Since the width of the groove 202 is greater than the width of the support arm 11, the groove 202 can provide rotation space for the first clamping member 200. Thus, under the stress of the support arm 11, the first clamping member 200 abuts against the inner wall of the mounting groove 110 and can rotate within the mounting groove 110, thereby reducing the stress between the support arm assembly 1 and the first clamping member 200 and the second clamping member 300, and thus reducing the possibility of the support arm 11 bending under pressure.

[0085] like Figure 9 As shown, along the direction from the bottom 203 of the first clamping groove 201 to the opening 202 of the first clamping groove 201 (i.e., the positive direction of the x-axis), the width of the first clamping groove 201 decreases in the Z-axis direction, and the shortest distance L between the inner wall of the first clamping groove 201 and the outer wall of the front rotating arm 12 increases.

[0086] The width of the first clamping groove 201 refers to the distance between the two opposite side walls of the first clamping groove 201 in the Z-axis direction. Along the positive X-axis, the shortest distance L between the inner wall of the first clamping groove 201 and the outer wall of the front rotating arm 12 decreases, causing the width of the first clamping groove 201 to gradually increase from the bottom 203 side to the opening 202 side. The cross-section of the first clamping groove 201 along the X-axis direction is arc-shaped.

[0087] During the rotation of the first clamping member 200, it rotates from a first position to a second position. When the first clamping member 200 is in the first position, the front rotating arm 12 is in contact with the bottom of the first clamping groove 201. After the first clamping member 200 rotates to the second position, the first clamping groove 201 also rotates to a position with a wider groove. At this time, the first clamping groove 201 and the front rotating arm 12 have a certain distance in the x-axis direction. The support arm 11 can further drive the front rotating arm 12 to extend into the first clamping groove 201, which reduces the stress between the support arm assembly 1 and the first clamping member 200 and the second clamping member 300, and further reduces the possibility of the support arm 11 bending under pressure.

[0088] like Figure 7 , Figure 8 As shown, the second clamping member 300 is hinged to the mounting base 100 via the first rotating shaft 310. A second magnetic attractor 920 is provided on the mounting base 100. When the second clamping member 300 rotates to the position of clamping the support arm assembly 1, the second magnetic attractor 920 magnetically attracts the second clamping member 300 to achieve a limiting position of the second clamping member 300. The attraction force of the second magnetic attractor 920 on the second clamping member 300 is greater than the attraction force of the first magnetic attractor 910 on the first clamping member 200. The second magnetic attractor 920 can be a magnet or an electromagnet. The magnetic induction intensity of the second magnetic attractor 920 is greater than the magnetic induction intensity of the first magnetic attractor 910. Therefore, during the extension of the length of the support arm 11, one end of the support arm 11 is limited by the second clamping member 300. Since the attraction of the second magnetic member to the second clamping member 300 is greater than the attraction of the first magnetic member 910 to the first clamping member 200, the position of the end of the support arm 11 close to the second clamping member 300 remains unchanged, allowing the other end of the support arm 11 to extend away from the second clamping member 300. This allows the support arm 11 to further push the first clamping member 200 to rotate and extend into the first clamping groove 201.

[0089] Example 3 This embodiment provides a valve clamping fixture 10 system, including a clamping fixture 10 and a valve clamp. The clamping fixture 10 can be the clamping fixture 10 of Embodiment 1 or Embodiment 2. Please refer to [the previous text]. Figure 1 The valve clip includes a support arm assembly 1, specifically including a support arm 11 and a front rotating arm 12 and a rear rotating arm 13 disposed at both ends of the support arm 11. One of the first clamping member 200 and the second clamping member 300 is used to clamp the front rotating arm 12, and the other is used to clamp the rear rotating arm 13.

[0090] The rear rotating arm 13 is provided with a through-hole 131, which extends through both ends of the rear rotating arm 13. The rear end of the support arm 11 is inserted into the through-hole. To prevent the support arm 11 from protruding, a limit mechanism 600 can be provided on the first clamping member 200 to clamp the rear rotating arm 13. The specific configuration can be referred to the description of Embodiment 1 or Embodiment 2.

[0091] The description of the various embodiments above tends to emphasize the differences between the various embodiments. The similarities or similarities between them can be referred to, and for the sake of brevity, they will not be repeated here.

[0092] The above are merely preferred embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A clamping fixture for clamping a workpiece to be assembled, wherein the workpiece is a workpiece whose length can be extended during welding; characterized in that, The clamping fixture includes: Mounting base; A first clamping element is disposed on the mounting base; A second clamping member is disposed on the mounting base. The first clamping member is adapted to clamp one end of the component to be assembled, and the second clamping member is adapted to clamp the other end of the component to be assembled. The first clamping member and / or the second clamping member are movably connected to the mounting base so that the first clamping member and the second clamping member can move relative to each other to fix or release the component to be assembled. The mounting base includes a first magnetic suction member, which is positioned corresponding to the first clamping member. The first clamping member is magnetically connected to the first magnetic suction member. When the first clamping member is subjected to the deformation force of the component to be assembled, the first clamping member can overcome the attraction force of the first magnetic suction member and move on the first magnetic suction member.

2. The clamping fixture according to claim 1, characterized in that, It also includes a first reset component, which is connected to the second clamping member and the mounting base respectively, and the second clamping member is rotatably connected to the mounting base.

3. The clamping fixture according to claim 2, characterized in that, The mounting base includes a first rotating shaft, and the second clamping member is rotatably connected to the first rotating shaft; The first reset assembly includes a torsion spring, which is sleeved on the first rotating shaft and located between the second clamping member and the mounting base. One end of the torsion spring is connected to the mounting base, and the other end of the torsion spring is connected to the second clamping member.

4. The clamping fixture according to claim 3, characterized in that, The mounting base includes a limiting adjustment member, which is movably connected to the first rotating shaft. The limiting adjustment member is in contact with the side wall of the second clamping member away from the mounting base. The limiting adjustment member is adapted to move axially along the first rotating shaft to adjust the position of the second clamping member on the first rotating shaft.

5. The clamping fixture according to claim 3, characterized in that, The mounting base includes a stop member located on the side of the first rotation axis away from the first clamping member, and the stop member is used to stop the second clamping member.

6. The clamping fixture according to claim 1, characterized in that, The first clamping member is provided with a first clamping groove and a positioning hole, which communicates with the first clamping groove; the clamping fixture also includes a limiting mechanism, one end of which passes through the positioning hole and is used to abut against the part to be assembled.

7. The clamping fixture according to claim 6, characterized in that, The limiting mechanism includes a limiting member and a second reset component. One end of the second reset component is connected to the mounting base, and the other end of the second reset component is connected to the limiting member. The limiting member is at least partially inserted into the positioning hole and is adapted to abut against the part to be assembled.

8. The clamping fixture according to claim 1, characterized in that, The mounting base has a mounting groove, and the first clamping member and the first magnetic member are both located in the mounting groove. The first magnetic member is located between the first clamping member and the bottom wall of the mounting groove. The mounting groove includes a spacer portion. The maximum width of the spacer portion is greater than the maximum width of the first clamping member. The side wall of the spacer portion is at least partially spaced from the side wall of the first clamping member.

9. The clamping fixture according to claim 8, characterized in that, The first clamping member is provided with a first clamping groove, the opening of the first clamping groove faces the second clamping member, and the width of the first clamping groove increases from the bottom of the first clamping groove to the opening of the first clamping groove.

10. A valve processing system, characterized in that, include: A valve clip includes a support arm and a front swivel arm and a rear swivel arm respectively disposed at both ends of the support arm; The clamping fixture according to any one of claims 1-9, wherein one of the first clamping member and the second clamping member of the clamping fixture is used to clamp the front rotating arm and the other is used to clamp the rear rotating arm.

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