Clamping and positioning jig

Abstract

The utility model relates to the technical field of welding equipment, in particular to a clamping and positioning jig. The clamping and positioning jig comprises a jig body, a jacking assembly and a clamping assembly, the jig body is arranged outside annular base metal, and the jig body can clamp an L-shaped pipe between the jig body and the peripheral wall of the annular base metal in the horizontal direction; the clamping assembly is installed on the jig body and can clamp and fix the jig body and annular base metal, the jacking assembly is installed on the jig body, the output end of the jacking assembly can bear and drive an L-shaped pipe to move in the vertical direction, and clamping and fixing of the L-shaped pipe and the annular base metal are achieved. The butt joint precision of the L-shaped pipe and the welding opening in the peripheral wall of the annular base material can be guaranteed, precise butt joint of the L-shaped pipe and the welding openings at different heights in the peripheral wall of the annular base material can be achieved, the clamping and positioning requirements of the L-shaped pipe and the welding openings at different heights are met, and the applicability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding equipment, in particular to a clamping and positioning fixture. Background Art

[0002] There are many soldering products in semiconductor equipment. Figure 1 As shown, a flow channel is provided in the annular base material 2. To facilitate the input and output of fluid into and out of the flow channel of the annular base material 2, a welding port 21 communicating with the flow channel is provided on the outer peripheral wall of the annular base material 2. An L-shaped pipe 1 is welded and fixed to the outer peripheral wall of the annular base material 2 so that one end opening of the L-shaped pipe 1 communicates with the welding port 21, allowing the fluid to flow along the L-shaped pipe 1 into the flow channel and out of the flow channel along the L-shaped pipe 1.

[0003] In the related art, for welding the L-shaped pipe 1 and the annular mother material 2, a worker needs to hold the L-shaped pipe 1 by hand and press the L-shaped pipe 1 against the outer wall of the annular mother material 2 so that the opening at one end of the L-shaped pipe 1 is aligned with the welding port 21 on the outer wall of the annular mother material 2, and then complete the welding and fixing of the L-shaped pipe 1 and the annular mother material 2. This method of manually clamping and positioning the L-shaped pipe 1 and the annular mother material 2 not only has a poor clamping and positioning effect, but also makes the L-shaped pipe 1 easily offset relative to the annular mother material 2, affecting the subsequent welding effect of the L-shaped pipe 1 and the annular mother material 2, and also easily leads to inconsistent specifications of the subsequent welded products. In addition, the temperature of the L-shaped pipe 1 is high during the welding process, and workers are easily burned when holding the L-shaped pipe 1 with water, posing a safety hazard.

[0004] Therefore, it is urgent to invent a clamping and positioning fixture to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a clamping and positioning jig to realize the clamping and positioning of L-shaped pipes and annular mother materials, with good fixing effect, high positioning accuracy and high applicability.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] A clamping and positioning fixture is used to clamp and fix the L-shaped pipe and the annular base material. The clamping and positioning fixture includes:

[0008] A jig body is provided outside the annular base material, and the jig body is capable of clamping the L-shaped pipe in a horizontal direction between the jig body and the outer peripheral wall of the annular base material;

[0009] A clamping assembly is mounted on the jig body, and the clamping assembly is capable of clamping and fixing the jig body and the annular base material;

[0010] A jacking assembly is installed on the fixture body, and an output end of the jacking assembly can support and drive the L-shaped pipe to move in a vertical direction.

[0011] As an optional solution, the jacking assembly includes:

[0012] a lifting member, the lifting member being used to support the L-shaped pipe; and

[0013] The first driving structure, the lifting member is connected to the output end of the first driving structure, and the first driving structure can drive the lifting member to move in the vertical direction.

[0014] As an optional solution, the first driving structure includes:

[0015] a first threaded rod, wherein a receiving cavity is provided in the fixture body, the first threaded rod extends in a vertical direction, and a threaded end of the first threaded rod is received in the receiving cavity; and

[0016] A first mating piece, wherein a first threaded through hole is provided on the first mating piece, the threaded end of the first threaded rod is threadedly mated with the first threaded through hole, the first threaded rod can rotate around its own central axis relative to the fixture body, and the lifting piece is connected and fixed to the first mating piece.

[0017] As an optional solution, a first avoidance groove is provided on the fixture body, the first avoidance groove extends in the vertical direction, the first avoidance groove is communicated with the accommodating cavity, one end of the lifting member extends into the first avoidance groove and is connected and fixed to the first matching member, and the lifting member can move in the first avoidance groove along the vertical direction.

[0018] As an optional solution, the end surface of the lifting member close to one end of the L-shaped pipe is covered with protrusions.

[0019] As an optional solution, the clamping assembly includes:

[0020] A first clamping member extending in a direction close to the L-shaped pipe;

[0021] A second clamping member is fixed to one end of the jig body in the vertical direction, the first clamping member and the second clamping member are arranged opposite to each other in the vertical direction, and the second clamping member extends in a direction close to the L-shaped pipe; and

[0022] The second driving structure, the first clamping member is connected to the output end of the second driving structure, and the second driving structure can drive the first clamping member to move in a vertical direction.

[0023] As an optional solution, the second driving structure includes:

[0024] a second threaded rod, wherein a receiving cavity is provided in the fixture body, the second threaded rod extends in a vertical direction, and a threaded end of the second threaded rod is received in the receiving cavity;

[0025] A second mating piece, wherein a second threaded through hole is provided on the second mating piece, the threaded end of the second threaded rod is threadedly mated with the second threaded through hole, the second threaded rod can rotate around its own central axis relative to the jig body, and the first clamping piece is connected and fixed to the second mating piece.

[0026] As an optional solution, a second avoidance groove is provided on the fixture body, extending in a vertical direction, and the second avoidance groove is connected to the accommodating cavity, and one end of the first clamping member extends into the second avoidance groove and is connected and fixed to the second matching member.

[0027] As an optional solution, the end surface of the first clamping member close to the second clamping member is covered with protrusions;

[0028] And / or, the end surface of the second clamping member close to the first clamping member is covered with protrusions.

[0029] As an optional solution, a first guide groove is provided at one end of the jig body close to the L-shaped tube, the first guide groove extends in a vertical direction, the axial cross-sectional shape of the first guide groove is adapted to the axial cross-sectional shape of the L-shaped tube, and part of the L-shaped tube is accommodated in the first guide groove.

[0030] Beneficial effects of the utility model:

[0031] The L-shaped pipe is fixed to the outer wall of the L-shaped pipe by the lifting device, and the L-shaped pipe is fixed to the outer wall of the L-shaped pipe by the lifting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1This is a schematic structural diagram of an L-shaped pipe and an annular base material provided by an embodiment of the present utility model;

[0033] Figure 2 This is a schematic structural diagram of a clamping and positioning fixture, an L-shaped pipe, and an annular base material provided by an embodiment of the present invention;

[0034] Figure 3 This is a front view of the clamping and positioning fixture provided by an embodiment of the present utility model;

[0035] Figure 4 It is a structural axonometric diagram provided by an embodiment of the utility model;

[0036] Figure 5 This is one of the cross-sectional schematic diagrams of the clamping and positioning fixture provided by an embodiment of the present utility model;

[0037] Figure 6 This is the second cross-sectional schematic diagram of the clamping and positioning fixture provided in an embodiment of the present utility model.

[0038] In the picture:

[0039] 1. L-shaped pipe; 2. Annular base material; 21. Welding joint;

[0040] 100. Clamping and positioning fixture; 110. Lifting assembly; 111. Lifting member; 112. First driving structure; 1121. First threaded rod; 1122. First matching member; 120. Clamping assembly; 121. First clamping member; 122. Second clamping member; 123. Second driving structure; 1231. Second threaded rod; 1232. Second matching member; 130. Fixture body; 131. Accommodating cavity; 132. First avoidance groove; 133. Second avoidance groove; 134. First guide groove. DETAILED DESCRIPTION

[0041] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the present invention are further explained below with reference to the accompanying drawings and through specific implementation methods.

[0042] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0043] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0044] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are used to refer to positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0045] like Figure 1 As shown, this embodiment provides an L-shaped pipe 1 and an annular base material 2, with a flow channel disposed within the annular base material 2. To facilitate the input and output of fluid into and from the flow channel of the annular base material 2, a weld opening 21 communicating with the flow channel is provided on the outer circumferential wall of the annular base material 2. The L-shaped pipe 1 is welded and fixed to the outer circumferential wall of the annular base material 2, such that one end opening of the L-shaped pipe 1 communicates with the weld opening 21, allowing the fluid to flow along the L-shaped pipe 1 into the flow channel and out of the flow channel along the L-shaped pipe 1.

[0046] In the related art, for welding the L-shaped pipe 1 and the annular mother material 2, a worker needs to hold the L-shaped pipe 1 by hand and press the L-shaped pipe 1 against the outer wall of the annular mother material 2 so that the opening at one end of the L-shaped pipe 1 is aligned with the welding port 21 on the outer wall of the annular mother material 2, and then complete the welding and fixing of the L-shaped pipe 1 and the annular mother material 2. This method of manually clamping and positioning the L-shaped pipe 1 and the annular mother material 2 not only has a poor clamping and positioning effect, but also makes the L-shaped pipe 1 easily offset relative to the annular mother material 2, affecting the subsequent welding effect of the L-shaped pipe 1 and the annular mother material 2, and also easily leads to inconsistent specifications of the subsequent welded products. In addition, the temperature of the L-shaped pipe 1 is high during the welding process, and workers are easily burned when holding the L-shaped pipe 1 with water, posing a safety hazard.

[0047] In order to solve the above problems, Figures 2 to 4As shown, this embodiment provides a clamping and positioning jig 100. The clamping and positioning jig 100 includes a jig body 130, a clamping assembly 120, and a lifting assembly 110, wherein the jig body 130 is arranged outside the annular mother material 2, and the jig body 130 can clamp the L-shaped pipe 1 between the jig body 130 and the outer peripheral wall of the annular mother material 2 in the horizontal direction, the clamping assembly 120 is installed on the jig body 130, and the clamping assembly 120 can clamp and fix the jig body 130 and the annular mother material 2, and the lifting assembly 110 is installed on the jig body 130, and the output end of the lifting assembly 110 can support and drive the L-shaped pipe 1 to move in the vertical direction.

[0048] The clamping and positioning fixture 100 can clamp and fix the L-shaped pipe 1 between the fixture body 130 and the annular mother material 2 in the horizontal direction by setting the fixture body 130 on the outside of the annular mother material 2. By installing the jacking component 110 on the fixture body 130 and using the jacking component 110 to support the L-shaped pipe 1, the L-shaped pipe 1 can be supported and positioned in the vertical direction. By installing the clamping component 120 on the fixture body 130 and using the clamping component 120 to clamp and fix the fixture body 130 and the annular mother material 2, the fixture body 130 and the annular mother material 2 can be improved. The fixing effect of the annular mother material 2 can further ensure the clamping and positioning effect of the L-shaped pipe 1 and the annular mother material 2 set between the fixture body 130 and the annular mother material 2, and because the lifting assembly 110 can drive the L-shaped pipe 1 to move in the vertical direction, it can not only ensure the docking accuracy of the L-shaped pipe 1 and the welding port 21 on the outer peripheral wall of the annular mother material 2, but also achieve the precise docking of the L-shaped pipe 1 and the welding ports 21 at different heights on the outer peripheral wall of the annular mother material 2, meet the clamping and positioning requirements of the L-shaped pipe 1 and the welding port 21 at different heights, and improve applicability.

[0049] In this embodiment, a first guide groove 134 is defined at one end of the jig body 130 proximate to the L-shaped tube 1. The first guide groove 134 extends vertically, and the axial cross-sectional shape of the first guide groove 134 matches the axial cross-sectional shape of the L-shaped tube 1. A portion of the L-shaped tube 1 is accommodated in the first guide groove 134. By defining the first guide groove 134 extending vertically at one end of the jig body 130 proximate to the L-shaped tube 1 and adapting the axial cross-sectional shape of the first guide groove 134 to the axial cross-sectional shape of the L-shaped tube 1, a portion of the L-shaped tube 1 can be accommodated in the first guide groove 134, thereby providing guidance for the lifting assembly 110 to drive the L-shaped tube 1 to move in the vertical direction.

[0050] As an optional solution, the jacking assembly 110 includes a jacking member 111 and a first drive structure 112, wherein the jacking member 111 is used to support the L-shaped pipe 1. The jacking member 111 is connected to the output end of the first drive structure 112, and the first drive structure 112 can drive the jacking member 111 to move in a vertical direction. By connecting the jacking member 111 to the output end of the first drive structure 112, the jacking member 111 supports the L-shaped pipe 1. When the first drive structure 112 drives the jacking member 111 to move in the vertical direction, it can drive the L-shaped pipe 1 supported on the jacking member 111 to move in the vertical direction, resulting in a simple structure and ingenious design.

[0051] Specifically, if Figure 4 and Figure 5 As shown, the first driving structure 112 includes a first threaded rod 1121 and a first mating piece 1122, wherein a accommodating cavity 131 is provided in the jig body 130, the first threaded rod 1121 extends in a vertical direction, the threaded end of the first threaded rod 1121 is accommodated in the accommodating cavity 131, a first threaded through hole is provided on the first mating piece 1122, the threaded end of the first threaded rod 1121 is threadedly mated with the first threaded through hole, the first threaded rod 1121 can rotate around its own central axis relative to the jig body 130, and the lifting piece 111 is connected and fixed to the first mating piece 1122. By setting an accommodating cavity 131 in the jig body 130 to accommodate the threaded end of the first threaded rod 1121 extending in the vertical direction, and opening a first threaded through hole on the first mating piece 1122 to engage with the threaded end, when the first threaded rod 1121 rotates around its own central axis, the first mating piece 1122 will move in the up and down directions driven by the thread, and the lifting piece 111 is connected and fixed to the first mating piece 1122, thereby achieving the effect of the first threaded rod 1121 driving the lifting piece 111 to move in the vertical direction, which not only has a good driving effect but also has high driving accuracy.

[0052] When the L-shaped pipe 1 needs to be driven to move upward in the vertical direction, the first threaded rod 1121 is rotated to cause the first fitting member 1122 to move upward under the driving member of the first threaded rod 1121, thereby driving the lifting member 111 connected and fixed to the first fitting member 1122 to move upward in the vertical direction, thereby achieving the effect of lifting the L-shaped pipe 1 supported on the lifting member 111 upward in the vertical direction. When the L-shaped pipe 1 needs to be driven to move downward in the vertical direction, the first threaded rod 1121 is rotated in the opposite direction to cause the first fitting member 1122 to move downward under the driving force of the first threaded rod 1121, thereby driving the lifting member 111 connected and fixed to the first fitting member 1122 to move downward in the vertical direction. At this time, the L-shaped pipe 1 supported on the lifting member 111 falls to the bottom of the lifting member 111 under the action of its own gravity and is supported by the lifting member 111 again, thereby achieving the effect of driving the L-shaped pipe 1 downward in the vertical direction.

[0053] To ensure the normal movement of the lifting member 111 relative to the jig body 130, a first avoidance groove 132 is provided on the jig body 130. The first avoidance groove 132 extends in the vertical direction and is in communication with the accommodating chamber 131. One end of the lifting member 111 extends into the first avoidance groove 132 and is fixedly connected to the first matching member 1122. The lifting member 111 can move vertically within the first avoidance groove 132. By providing the first avoidance groove 132 extending in the vertical direction on the jig body 130, one end of the lifting member 111 extends into the first avoidance groove 132 and is fixedly connected to the first matching member 1122. When the first matching member 1122 drives the lifting member 111 to move in the vertical direction, the lifting member 111 moves within the first avoidance groove 132, thereby solving the interference problem between the lifting member 111 and the jig body 130.

[0054] Furthermore, to ensure that the lifting member 111 can effectively lift the L-shaped pipe 1, the end surface of the lifting member 111 near the end of the L-shaped pipe 1 is covered with protrusions. This improves the surface roughness of the end surface of the lifting member 111 near the end of the L-shaped pipe 1, thereby increasing the friction between the lifting member 111 and the L-shaped pipe 1, preventing the L-shaped pipe 1 from slipping or deflecting relative to the lifting member 111, and improving the lifting effect on the L-shaped pipe 1.

[0055] In an alternative embodiment, if Figure 4 and Figure 6 As shown, the clamping assembly 120 includes a first clamping member 121, a second clamping member 122 and a second driving structure 123, wherein the first clamping member 121 extends in a direction close to the L-shaped pipe 1, and the second clamping member 122 is fixed to one end of the fixture body 130 in the vertical direction. The first clamping member 121 and the second clamping member 122 are arranged opposite to each other in the vertical direction, and the second clamping member 122 extends in a direction close to the L-shaped pipe 1. The first clamping member 121 is connected to the output end of the second driving structure 123, and the second driving structure 123 can drive the first clamping member 121 to move in the vertical direction. By fixing the second clamping member 122 at one end of the jig body 130 in the vertical direction, the first clamping member 121 is connected to the output end of the second driving structure 123, so that the first clamping member 121 and the second clamping member 122 are both extended in the direction close to the L-shaped pipe 1 and are arranged opposite to each other in the vertical direction. The second driving structure 123 drives the first clamping member 121 to move in the vertical direction, which can achieve the effect of clamping and fixing the annular mother material 2 by the first clamping member 121 and the second clamping member 122, thereby achieving the relative fixation of the jig body 130 and the annular mother material 2, and further achieving the clamping and fixation of the L-shaped pipe 1 and the annular mother material 2.

[0056] To ensure the clamping effect of the first clamping member 121 and the second clamping member 122 on the annular mother material 2, the end surface of the first clamping member 121 close to the second clamping member 122 is covered with protrusions, and / or the end surface of the second clamping member 122 close to the first clamping member 121 is covered with protrusions. By covering the end surface of the first clamping member 121 close to the second clamping member 122 with protrusions, and / or covering the end surface of the second clamping member 122 close to the first clamping member 121 with protrusions, the surface roughness of the contact surface between the first clamping member 121 and the annular mother material 2 and the surface roughness of the contact surface between the second clamping member 122 and the annular mother material 2 can be improved. When the first clamping member 121 and the second clamping member 122 jointly clamp the annular mother material 2, the clamping effect of the first clamping member 121 and the second clamping member 122 on the annular mother material 2 can be improved. It should be noted that in this embodiment, both the end surface of the first clamping member 121 near the second clamping member 122 and the end surface of the second clamping member 122 near the first clamping member 121 are covered with protrusions. In other embodiments, only the end surface of the first clamping member 121 near the second clamping member 122 may be covered with protrusions, or only the end surface of the second clamping member 122 near the first clamping member 121 may be covered with protrusions, and this embodiment is not specifically limited to this.

[0057] In this embodiment, the second driving structure 123 includes a second threaded rod 1231 and a second mating piece 1232, wherein the second threaded rod 1231 extends in a vertical direction, the threaded end of the second threaded rod 1231 is accommodated in the accommodating cavity 131 in the main sentence fixture body 130, and a second threaded through hole is provided on the second mating piece 1232, and the threaded end of the second threaded rod 1231 is threadedly engaged with the second threaded through hole, and the second threaded rod 1231 can rotate around its own central axis relative to the fixture body 130, the first clamping piece 121 is connected and fixed to the second mating piece 1232, the first threaded rod 1121 and the second threaded rod 1231 do not interfere with each other, and the first mating piece 1122 and the second mating piece 1232 do not interfere with each other. By setting a second threaded rod 1231 in the vertical direction, and setting the threaded end of the second threaded rod 1231 in the accommodating cavity 131 of the fixture body 130, a second threaded through hole is opened on the second mating piece 1232, so that the second threaded through hole of the second mating piece 1232 is threadedly mated with the threaded end of the second threaded rod 1231, the second threaded rod 1231 can drive the second mating piece 1232 to move in the vertical direction. By connecting and fixing the first clamping piece 121 and the second mating piece 1232, the effect of driving the first clamping piece 121 to move in the vertical direction is achieved, and the first threaded rod 1121 and the second threaded rod 1231 do not interfere with each other, and the first mating piece 1122 and the second mating piece 1232 do not interfere with each other, which can ensure the normal operation of the clamping assembly 120 and the jacking assembly 110.

[0058] Similarly, to ensure the normal movement of the first clamping member 121 relative to the jig body 130, a second avoidance groove 133 is provided on the jig body 130. The second avoidance groove 133 extends in the vertical direction and is in communication with the accommodating cavity 131. One end of the first clamping member 121 extends into the second avoidance groove 133 and is fixedly connected to the second matching member 1232. By providing the second avoidance groove 133 extending in the vertical direction on the jig body 130, one end of the first clamping member 121 extends into the second avoidance groove 133 and is fixedly connected to the second matching member 1232. When the second matching member 1232 drives the first clamping member 121 to move in the vertical direction, the first clamping member 121 moves within the second avoidance groove 133, thereby resolving the interference problem between the first clamping member 121 and the jig body 130.

[0059] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A clamping and positioning fixture for clamping and fixing an L-shaped pipe (1) and an annular base material (2), characterized in that: The clamping and positioning fixture includes: A jig body (130) is arranged outside the annular mother material (2), and the jig body (130) is capable of clamping the L-shaped pipe (1) between the jig body (130) and the outer peripheral wall of the annular mother material (2) in a horizontal direction; A clamping assembly (120) is mounted on the jig body (130), and the clamping assembly (120) is capable of clamping and fixing the jig body (130) and the annular mother material (2); A lifting assembly (110) is mounted on the fixture body (130), and an output end of the lifting assembly (110) is capable of supporting and driving the L-shaped pipe (1) to move in a vertical direction.

2. The clamping and positioning fixture according to claim 1, characterized in that: The lifting assembly (110) comprises: A lifting member (111), the lifting member (111) is used to support the L-shaped pipe (1); and A first driving structure (112), the lifting member (111) is connected to an output end of the first driving structure (112), and the first driving structure (112) is capable of driving the lifting member (111) to move in a vertical direction.

3. The clamping and positioning fixture according to claim 2, characterized in that: The first driving structure (112) comprises: A first threaded rod (1121), wherein a receiving cavity (131) is provided in the fixture body (130), the first threaded rod (1121) extends in a vertical direction, and a threaded end of the first threaded rod (1121) is received in the receiving cavity (131); and A first mating piece (1122) is provided with a first threaded through hole, the threaded end of the first threaded rod (1121) is threadedly mated with the first threaded through hole, the first threaded rod (1121) can rotate around its own central axis relative to the fixture body (130), and the lifting piece (111) is connected and fixed to the first mating piece (1122).

4. The clamping and positioning fixture according to claim 3, characterized in that: A first avoidance groove (132) is provided on the fixture body (130), and the first avoidance groove (132) extends in a vertical direction. The first avoidance groove (132) is communicated with the accommodating cavity (131), and one end of the lifting member (111) extends into the first avoidance groove (132) and is connected and fixed to the first matching member (1122). The lifting member (111) can move in the first avoidance groove (132) along the vertical direction.

5. The clamping and positioning fixture according to claim 2, characterized in that: The end surface of the lifting member (111) close to one end of the L-shaped pipe (1) is covered with protrusions.

6. The clamping and positioning fixture according to claim 1, characterized in that: The clamping assembly (120) comprises: A first clamping member (121) extends in a direction close to the L-shaped pipe (1); a second clamping member (122) fixed to one end of the jig body (130) in the vertical direction, the first clamping member (121) and the second clamping member (122) being arranged opposite to each other in the vertical direction, and the second clamping member (122) extending in a direction close to the L-shaped pipe (1); and A second driving structure (123), wherein the first clamping member (121) is connected to an output end of the second driving structure (123), and the second driving structure (123) is capable of driving the first clamping member (121) to move in a vertical direction.

7. The clamping and positioning fixture according to claim 6, characterized in that: The second driving structure (123) comprises: A second threaded rod (1231), wherein a receiving cavity (131) is provided in the fixture body (130), the second threaded rod (1231) extends in a vertical direction, and a threaded end of the second threaded rod (1231) is received in the receiving cavity (131); A second mating piece (1232) is provided with a second threaded through hole, the threaded end of the second threaded rod (1231) is threadedly mated with the second threaded through hole, the second threaded rod (1231) can rotate around its own central axis relative to the fixture body (130), and the first clamping piece (121) is connected and fixed to the second mating piece (1232).

8. The clamping and positioning fixture according to claim 7, characterized in that: A second avoidance groove (133) is provided on the fixture body (130), and the second avoidance groove (133) extends in a vertical direction. The second avoidance groove (133) is communicated with the accommodating cavity (131), and one end of the first clamping member (121) extends into the second avoidance groove (133) and is connected and fixed to the second matching member (1232).

9. The clamping and positioning fixture according to claim 6, characterized in that: The end surface of the first clamping member (121) close to the second clamping member (122) is covered with protrusions; And / or, the end surface of the second clamping member (122) close to the first clamping member (121) is covered with protrusions.

10. The clamping and positioning fixture according to claim 1, characterized in that: A first guide groove (134) is provided at one end of the jig body (130) close to the L-shaped tube (1). The first guide groove (134) extends in a vertical direction. The axial cross-sectional shape of the first guide groove (134) is adapted to the axial cross-sectional shape of the L-shaped tube (1). Part of the L-shaped tube (1) is accommodated in the first guide groove (134).

Images