D-SUB connector welding positioning device

Abstract

The utility model discloses a D-SUB connector welding positioning device which comprises a jig base provided with a first positioning groove; the first positioning mechanism and the second positioning mechanism are arranged on the jig base in a spaced mode, a positioning space is formed among the first positioning mechanism, the second positioning mechanism and the jig base, a second positioning groove is further formed in the first positioning mechanism, and a third positioning groove is further formed in the second positioning mechanism; and the limiting mechanism is arranged on the jig base and / or the first positioning mechanism and / or the second positioning mechanism, the connector can enter and exit the positioning space in the second direction, when the connector is placed in the positioning space, parts of the connector can be correspondingly embedded into the first positioning groove, the second positioning groove and the third positioning groove respectively, and the limiting mechanism can press the connector tightly. According to the utility model, the long side surface of the outer edge part of the connector can be embedded into the groove of the positioning device and is in plane contact with the positioning device, so that the connector is fixed more stably.

Description

Technical Field

[0001] The utility model particularly relates to a D-SUB connector welding positioning device, belonging to the technical field of welding positioning devices. Background Art

[0002] The D-SUB connector needs to have a ground wire welded on the housing. During welding, the connector needs to be clamped in a bench vise to fix it, and the bench vise needs to be repeatedly released after welding. However, repeated clamping of the bench vise wastes a lot of work time and can easily cause the connector contact end to deform, thus affecting quality. Utility Model Content

[0003] The main purpose of the utility model is to provide a D-SUB connector welding positioning device, so as to overcome the shortcomings of the prior art.

[0004] In order to achieve the above-mentioned utility model purpose, the technical solution adopted by the utility model includes:

[0005] The utility model provides a D-SUB connector welding positioning device, comprising:

[0006] A fixture base, wherein the fixture base has a work surface, and a first positioning groove is arranged on the work surface;

[0007] A first positioning mechanism and a second positioning mechanism are arranged on the jig base at intervals along a first direction, the first positioning mechanism, the second positioning mechanism and the jig base enclose a positioning space for fixing the connector, and the first positioning mechanism is further provided with a second positioning groove, and the second positioning mechanism is further provided with a third positioning groove;

[0008] A limiting mechanism, disposed on the fixture base and / or the first positioning mechanism and / or the second positioning mechanism, the limiting mechanism being movable between the first station and the second station;

[0009] The connector can enter and exit the positioning space along a second direction. When the connector is placed in the positioning space, parts of the connector can be respectively embedded in the first positioning groove, the second positioning groove, and the third positioning groove. When the limiting mechanism is located at the first station, the limiting mechanism is arranged along the second direction on a trajectory of the connector entering and exiting the positioning space, and the connector is restricted in the positioning space along the second direction. When the limiting mechanism is located at the second station, the limiting mechanism is arranged outside the trajectory of the connector entering and exiting the positioning space along the second direction, and the second direction is arranged crosswise with the first direction.

[0010] Further, the first positioning mechanism has a first positioning surface, the second positioning groove is arranged on the first positioning surface, the second positioning mechanism has a second positioning surface, the third positioning groove is arranged on the second positioning surface, the first positioning surface and the second positioning surface are arranged opposite to each other along the first direction, and the first positioning surface, the second positioning surface and the worktable are enclosed to form the positioning space;

[0011] When the connector is placed in the positioning space, the outer edge of the connector can be respectively embedded in the first positioning groove, the second positioning groove, and the third positioning groove, and the main body of the connector can fit with the work surface, the first positioning surface, and the second positioning surface.

[0012] Furthermore, the length direction of the first positioning groove is parallel to the first direction, and the length directions of the second positioning groove and the third positioning groove are parallel to the second direction;

[0013] Furthermore, the first direction crosses the second direction perpendicularly.

[0014] Furthermore, the first positioning groove is located on an extension line of the second positioning groove and the third positioning groove along the second direction.

[0015] Furthermore, the first positioning mechanism and / or the second positioning mechanism can be movably matched with the fixture base, and the position of the first positioning mechanism and / or the second positioning mechanism on the work surface can be adjusted along the first direction, so that the width of the positioning space along the first direction changes accordingly.

[0016] Furthermore, the jig base is also provided with a first guide structure extending along the first direction, the work surface is arranged on the first guide structure, the first positioning mechanism and / or the second positioning mechanism is provided with a second guide structure matching the first guide structure, and the guide limiting structure formed by the mutual embedding of the first guide structure and the second guide structure has the following functions: allowing the first positioning mechanism and / or the second positioning mechanism to move relative to the jig base along the first direction, and limiting the relative movement of the first positioning mechanism and / or the second positioning mechanism and the jig base along the second direction.

[0017] Further, the first guide structure includes a first guide rail and a first guide groove, the first guide rail and the first guide groove are arranged on one side or both sides of the work surface along the third direction, and the first guide groove is arranged below the first guide rail along the second direction;

[0018] The second guide structure includes a second guide rail and a second guide groove, the second guide rail is arranged below the second guide groove along the second direction, the first guide rail is correspondingly arranged in the second guide groove, the second guide rail is correspondingly arranged in the first guide groove, and the third direction is arranged perpendicularly to the first direction and the second direction.

[0019] Furthermore, the first guide structure and the second guide structure are both T-shaped structures.

[0020] In a more specific implementation case, the D-SUB connector welding positioning device also includes a locking mechanism, which is arranged on the first positioning mechanism and / or the second positioning mechanism, and the locking mechanism is detachably connected to the jig base. When the locking mechanism is connected to the jig base, the position of the first positioning mechanism and / or the second positioning mechanism on the jig base is fixed, or the locking mechanism is threadedly connected to the first positioning mechanism and / or the second positioning mechanism, and by screwing the locking mechanism, one end of the locking mechanism can be in contact with the jig base, and the first positioning mechanism and / or the second positioning mechanism of the locking mechanism are pressed against the jig base, so that the position of the first positioning mechanism and / or the second positioning mechanism on the jig base is fixed.

[0021] Furthermore, the limiting mechanism is rotationally matched with the first positioning mechanism and / or the second positioning mechanism, and the limiting mechanism can be moved between the first workstation and the second workstation by rotating the limiting mechanism.

[0022] Furthermore, the limiting mechanism is rotatably arranged on a rotating shaft, and the rotating shaft is fixedly arranged on the first positioning mechanism and / or the second positioning mechanism, and the limiting mechanism can be moved between the first station and the second station by rotating the limiting mechanism.

[0023] Furthermore, the limiting mechanism includes a buckle and a spring, the buckle is movably arranged on the rotating shaft, and the spring elastically cooperates with the buckle and provides pressure to drive the buckle to press downward along the second direction.

[0024] Furthermore, the fixture base is also provided with a mounting hole, and the fixture base can be mounted on the operating table through the mounting hole.

[0025] Compared with the prior art, the advantages of the utility model include:

[0026] The utility model provides a D-SUB connector welding positioning device, which can embed the long side surface of the outer edge of the connector into the groove of the positioning device and achieve plane contact with the positioning device, so that the fixation of the connector is more stable;

[0027] The utility model provides a D-SUB connector welding positioning device, the size of the positioning space can be adjusted, so that it can be adapted to fix multiple connectors of the same type with different sizes;

[0028] The utility model provides a D-SUB connector welding positioning device, which can vertically compress the connector by setting an adjustable limiting mechanism, so that the connector can be stably embedded in the groove of the positioning device, so that it can better resist the influence of external force factors. After the connector is fixed, it is not easy to fall out, and the fixing stability is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 It is a structural schematic diagram of a D-SUB connector welding positioning device provided in a typical implementation case of the utility model;

[0031] Figure 2 It is a structural schematic diagram of a D-SUB connector welding positioning device provided in a typical implementation case of the utility model;

[0032] Figure 3 It is a front view of a D-SUB connector welding positioning device provided in a typical implementation case of the utility model. DETAILED DESCRIPTION

[0033] In view of the deficiencies in the prior art, the inventor of this case has proposed the technical solution of the utility model after long-term research and extensive practice. The technical solution, its implementation process and principle, etc. will be further explained as follows. It should be noted that the specific implementation case of the utility model is intended to explain and illustrate the structural composition and working principle of the vacuum and rotary spray composite high-efficiency degassing device for aluminum alloy refining. Unless otherwise specified, the fixture base, guide rails, guide grooves, positioning grooves, springs, buckles, etc. can be purchased from the market or obtained by conventional processing known to those skilled in the art, and their specific shapes, structures, etc. are not limited here.

[0034] Example

[0035] See also Figure 1-Figure 3A D-SUB connector welding positioning device includes a jig base 100, a first positioning mechanism 200, a second positioning mechanism 300 and a limiting mechanism 400. The first positioning mechanism 200 and the second positioning mechanism 300 are arranged on the jig base 100 at intervals along a first direction, and the limiting mechanism 400 is movably arranged on the first positioning mechanism 200. The first positioning mechanism 200 and the second positioning mechanism 300 are arranged to be able to move along the first direction on the jig base 100 but cannot move along the second direction. The jig base 100, the first positioning mechanism 200, and the second positioning mechanism 300 are surrounded by a positioning space A for fixing a connector (mainly a D-SUB connector). The connector can enter and exit the positioning space A along the second direction. The limiting mechanism 400 is used to limit the connector in the positioning space A to prevent the connector from escaping from the positioning space A along the second direction, wherein the second direction is perpendicular to the first direction.

[0036] Specifically, a first positioning groove 110 is provided on the fixture base 100, a second positioning groove 210 is also provided on the first positioning mechanism 200, and a third positioning groove 310 is also provided on the second positioning mechanism 300. The first positioning groove 110, the second positioning groove 210 and the third positioning groove 310 are all arranged in the positioning space A, and the second positioning groove 210 and the third positioning groove 310 are arranged opposite to each other. When the connector is placed in the positioning space A, parts of the connector can be respectively embedded in the first positioning groove 110, the second positioning groove 210 and the third positioning groove 310, which can not only realize the pre-positioning function of the connector, but also play a certain fixing role on the connector.

[0037] Specifically, the top of the fixture base 100 has a work surface, the first positioning groove 110 is arranged on the work station surface, the first positioning mechanism 200 has a first positioning surface, the second positioning groove 210 is arranged on the first positioning surface, the second positioning mechanism 300 has a second positioning surface, and the third positioning groove 310 is arranged on the second positioning surface. The first positioning surface and the second positioning surface are arranged opposite to each other along the first direction, and the first positioning surface, the second positioning surface and the work surface are surrounded to form a positioning space A; when the connector is placed in the positioning space A, the outer edge portion of the connector can be respectively embedded in the first positioning groove 110, the second positioning groove 210, and the third positioning groove 310, and the main body of the connector can fit with the work surface, the first positioning surface, and the second positioning surface. It should be noted that the outer edge portion of the connector is arranged around the main body, and the thickness of the outer edge portion is less than the thickness of the main body, and the thickness of the outer edge portion is slightly less than the width of the first positioning groove 110, the second positioning groove 210, and the third positioning groove 310.

[0038] Specifically, the length direction of the first positioning groove 110 is parallel to the first direction, the length directions of the second positioning groove 210 and the third positioning groove 310 are parallel to the second direction, the second positioning groove 210 and the third positioning groove 310 are connected in the second direction, and the first positioning groove 110 is located on the extension line of the second positioning groove 210 and the third positioning groove 310 along the second direction. More specifically, parts of the first positioning mechanism 200 and the second positioning mechanism 300 are in contact with the work surface of the fixture base 100, and the second positioning groove 210 and the third positioning groove 310 are connected to the first positioning groove 110.

[0039] Specifically, the first positioning mechanism 200 and / or the second positioning mechanism 300 are movably matched with the fixture base 100, and the position of the first positioning mechanism 200 and / or the second positioning mechanism 300 on the work surface can be adjusted along the first direction, so that the width of the positioning space A along the first direction changes accordingly. It can be understood that one of the first positioning mechanism 200 and the second positioning mechanism 300 is movable on the fixture base 100, that is, it is possible to adjust the width of the positioning space A in the first direction, thereby achieving the fixation of connectors of different sizes, and more convenient for the connector to be moved along the second direction. To enter and exit the positioning space A, illustratively, the second positioning mechanism 300 can be first moved along the first direction so that the width of the positioning space A in the first direction is larger than the size of the connector in the first direction, the connector is set on the work surface of the fixture base 100 and the outer edge of the connector is embedded in the first positioning groove 110 and the second positioning groove 210, and then the second positioning mechanism 300 is moved toward the first positioning mechanism 200 along the first direction until the outer edge of the connector is embedded in the third positioning groove 310, and the connector is clamped and fixed by the first positioning mechanism 200 and the second positioning mechanism 300 in the first direction.

[0040] As a typical implementation case, the first positioning mechanism 200 and the second positioning mechanism 300 are both movably coordinated with the fixture base 100 and can move along the first direction, and the structures of the first positioning mechanism 200 and the second positioning mechanism 300 themselves, as well as the coordination structure and method between the first positioning mechanism 200, the second positioning mechanism 300 and the fixture base 100 can be the same. The following takes the first positioning mechanism 200 as an example to explain its own structure and the coordination structure between it and the fixture base 100 in detail, and technical personnel in this field can understand the structure of the second positioning mechanism 300 and the coordination structure between the second positioning mechanism 300 and the fixture base 100 without any objection.

[0041] Specifically, the jig base 100 is also provided with a first guide structure extending along the first direction, the work surface is arranged on the first guide structure, and the first positioning mechanism 200 is provided with a second guide structure matching the first guide structure. The guide limiting structure formed by the mutual embedding of the first guide structure and the second guide structure has the following functions: allowing the first positioning mechanism 200 and the jig base 100 to move relative to each other along the first direction, and limiting the first positioning mechanism 200 and the jig base 100 to move relative to each other along the second direction.

[0042] More specifically, the first guide structure includes a first guide rail 120 and a first guide groove 130, the first guide rail 120 and the first guide groove 130 are arranged on one side or both sides of the work surface along the third direction, the first guide groove 130 is arranged below the first guide rail 120 along the second direction, the second guide structure includes a second guide rail 220 and a second guide groove 230, the second guide rail 220 is arranged below the second guide groove 230 along the second direction, the first guide rail 120 is correspondingly arranged in the second guide groove 230, the second guide rail 220 is correspondingly arranged in the first guide groove 130, the third direction is perpendicular to the first direction and the second direction, more specifically, the first guide structure formed by the first guide rail 120 and the first guide groove 130 is a T-shaped structure, and the second guide structure formed by the second guide rail 220 and the second guide groove 230 is also a T-shaped structure. It should be noted that the first guide rail 120 itself is a T-shaped structure, and the first guide groove 130 is formed by the cap portion of the first guide rail 120 with a larger size and the root portion of the first guide rail 120 with a smaller size.

[0043] Specifically, a locking mechanism is further provided on the first positioning mechanism 200 , and the locking mechanism is used to fix the first positioning mechanism 200 at a designated position of the fixture base 100 .

[0044] As one of the embodiments, the locking mechanism can be a threaded member, and the locking mechanism is threadedly connected to the first positioning mechanism 200 and the jig base 100. It can be understood that the jig base 100 is provided with a plurality of threaded holes, and the plurality of threaded holes are sequentially arranged along the first direction. When the locking mechanism corresponds to the threaded holes on the jig base 100 and is threadedly connected to the jig base 100, the locking mechanism, the first positioning mechanism 200, and the jig base 100 are fixed, thereby achieving the fixation of the first positioning mechanism 200. Accordingly, by screwing the locking mechanism and releasing the connection between the locking mechanism and the jig base 100, the first positioning mechanism 200 can move along the first direction on the jig base 100.

[0045] As another embodiment, the locking mechanism can be a threaded member, which is threadedly connected to the first positioning mechanism 200. One end of the locking mechanism can abut against the jig base 100 along the second direction. When the locking mechanism is screwed in the forward direction, the locking mechanism abuts against the jig base 100 along the second direction, and the first limiting structure and the second limiting structure defined above can limit the relative movement between the first positioning mechanism 200 and the jig base 100 along the second direction. Therefore, when the locking mechanism abuts against the jig base 100 along the second direction, the first positioning mechanism 200 can fit tightly with the jig base 100, and a part of the jig base 100 is clamped between the locking mechanism and the first positioning mechanism 200 along the second direction. Under the action of friction, the first positioning mechanism 200 is fixed to the jig base 100. Accordingly, when the locking mechanism is screwed in the reverse direction, the first positioning mechanism 200 can be released.

[0046] Specifically, one limiting mechanism 400 may be provided. In this case, the limiting mechanism 400 may be provided separately on the first positioning mechanism 200 or the second positioning mechanism 300. Of course, a plurality of limiting mechanisms 400 may also be provided, that is, the limiting mechanism 400 may be provided on both the first positioning mechanism 200 and the second positioning mechanism 300. The following takes the limiting mechanism 400 provided on the first positioning mechanism 200 as an example to explain the coordination structure between the two and the working principle of the limiting mechanism 400.

[0047] Specifically, the limiting mechanism 400 is rotatably cooperated with the first positioning mechanism 200, and the limiting mechanism 400 can be moved between the first station and the second station by rotating the limiting mechanism 400. When the limiting mechanism 400 is located at the first station, the limiting mechanism 400 is set along the second direction on the trajectory of the connector entering and exiting the positioning space A, and presses the connector along the second direction, and the connector is restricted in the positioning space A along the second direction. When the limiting mechanism 400 is located at the second station, the limiting mechanism 400 is set outside the trajectory of the connector entering and exiting the positioning space A along the second direction, and the connector can escape from the positioning space A along the second direction.

[0048] More specifically, the limiting mechanism 400 is rotatably disposed on a rotating shaft 420 , and the rotating shaft 420 is fixedly disposed on the first positioning mechanism 200 and / or the second positioning mechanism 300 . The limiting mechanism 400 can rotate around the rotating shaft 420 .

[0049] More specifically, the limiting mechanism 400 includes a buckle 410 and a spring 430. The buckle 410 is movably arranged on the rotating shaft 420. The spring 430 elastically cooperates with the buckle 410 and provides pressure to drive the buckle 410 to press down along the second direction. More specifically, the spring 430 can be arranged on the side of the buckle 410 away from the first positioning mechanism 200 along the second direction, or the spring 430 can be arranged on the side of the buckle 410 close to the first positioning structure along the second direction, and one end of the spring 430 is fixedly connected to the buckle 410, and the other end is fixedly connected to the first positioning mechanism 200. It should be noted that when the spring 430 can be arranged on the side of the buckle 410 away from the first positioning mechanism 200 along the second direction, the size of the top of the rotating shaft 420 should be larger than the size of the spring 430 to prevent the spring 430 from detaching.

[0050] Specifically, a mounting hole 140 is further provided on the fixture base 100 , and the fixture base 100 can be mounted on the operating table through the mounting hole 140 .

[0051] The utility model provides a D-SUB connector welding positioning device, which can embed the long side surface of the outer edge of the connector into the groove of the positioning device and achieve planar contact with the positioning device, so that the fixation of the connector is more stable; and the utility model provides a D-SUB connector welding positioning device, the size of the positioning space can be adjusted, so that it can adapt to the fixation of multiple connectors of the same type and different sizes; and the utility model provides a D-SUB connector welding positioning device, which can vertically press the connector by setting an adjustable limiting mechanism, so that the connector is stably embedded in the groove of the positioning device, so that it can better resist the influence of external forces, and the connector is not easy to fall out after being fixed, and the fixation stability is better. In addition, by setting a mounting hole on the fixture base, the positioning device can be replaced more conveniently.

[0052] It should be pointed out that, unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as commonly understood by ordinary technicians in the technical field to which the present invention belongs.

[0053] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0054] It should be understood that the above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A D-SUB connector welding positioning device, characterized in that: include: A fixture base, the fixture base having a work surface, and a first positioning groove is arranged on the work surface; A first positioning mechanism and a second positioning mechanism are arranged on the jig base at intervals along a first direction, the first positioning mechanism, the second positioning mechanism and the jig base enclose a positioning space for fixing the connector, and the first positioning mechanism is further provided with a second positioning groove, and the second positioning mechanism is further provided with a third positioning groove; A limiting mechanism, disposed on the fixture base and / or the first positioning mechanism and / or the second positioning mechanism, the limiting mechanism being movable between the first station and the second station; The connector can enter and exit the positioning space along a second direction. When the connector is placed in the positioning space, parts of the connector can be respectively embedded in the first positioning groove, the second positioning groove, and the third positioning groove. When the limiting mechanism is located at the first station, the limiting mechanism is arranged along the second direction on a trajectory of the connector entering and exiting the positioning space, and the connector is restricted in the positioning space along the second direction. When the limiting mechanism is located at the second station, the limiting mechanism is arranged outside the trajectory of the connector entering and exiting the positioning space along the second direction. The second direction is arranged crosswise with the first direction.

2. The D-SUB connector welding positioning device according to claim 1, characterized in that: The first positioning mechanism has a first positioning surface, the second positioning groove is arranged on the first positioning surface, the second positioning mechanism has a second positioning surface, the third positioning groove is arranged on the second positioning surface, the first positioning surface and the second positioning surface are arranged opposite to each other along the first direction, and the first positioning surface, the second positioning surface and the worktable are surrounded to form the positioning space; When the connector is placed in the positioning space, the outer edge of the connector can be respectively embedded in the first positioning groove, the second positioning groove, and the third positioning groove, and the main body of the connector can fit with the work surface, the first positioning surface, and the second positioning surface.

3. The D-SUB connector welding positioning device according to claim 1 or 2, characterized in that: The length direction of the first positioning groove is parallel to the first direction, and the length directions of the second positioning groove and the third positioning groove are parallel to the second direction.

4. The D-SUB connector welding positioning device according to claim 3, characterized in that: The first direction crosses the second direction perpendicularly.

5. The D-SUB connector welding positioning device according to claim 3, characterized in that: The first positioning groove is located on an extension line of the second positioning groove and the third positioning groove along the second direction.

6. The D-SUB connector welding positioning device according to claim 1 or 2, characterized in that: The first positioning mechanism and / or the second positioning mechanism can be movably matched with the fixture base, and the position of the first positioning mechanism and / or the second positioning mechanism on the work surface can be adjusted along the first direction, so that the width of the positioning space along the first direction changes accordingly.

7. The D-SUB connector welding positioning device according to claim 6, characterized in that: The jig base is also provided with a first guide structure extending along the first direction, the work surface is arranged on the first guide structure, the first positioning mechanism and / or the second positioning mechanism is provided with a second guide structure matching the first guide structure, and the guide limiting structure formed by the mutual embedding of the first guide structure and the second guide structure has the following functions: allowing the first positioning mechanism and / or the second positioning mechanism to move relative to the jig base along the first direction, and limiting the relative movement of the first positioning mechanism and / or the second positioning mechanism and the jig base along the second direction.

8. The D-SUB connector welding positioning device according to claim 7, characterized in that: The first guide structure includes a first guide rail and a first guide groove, wherein the first guide rail and the first guide groove are arranged on one side or both sides of the work surface along the third direction, and the first guide groove is arranged below the first guide rail along the second direction; The second guide structure includes a second guide rail and a second guide groove, the second guide rail is arranged below the second guide groove along the second direction, the first guide rail is correspondingly arranged in the second guide groove, the second guide rail is correspondingly arranged in the first guide groove, and the third direction is arranged perpendicularly to the first direction and the second direction.

9. The D-SUB connector welding positioning device according to claim 8, characterized in that: The first guide structure and the second guide structure are both T-shaped structures.

10. The D-SUB connector welding positioning device according to claim 7, characterized in that: It also includes a locking mechanism, which is arranged on the first positioning mechanism and / or the second positioning mechanism, and the locking mechanism is detachably connected to the jig base. When the locking mechanism is connected to the jig base, the position of the first positioning mechanism and / or the second positioning mechanism on the jig base is fixed, or the locking mechanism is threadedly connected to the first positioning mechanism and / or the second positioning mechanism. By screwing the locking mechanism, one end of the locking mechanism can abut against the jig base, and the first positioning mechanism and / or the second positioning mechanism of the locking mechanism are pressed against the jig base, so that the position of the first positioning mechanism and / or the second positioning mechanism on the jig base is fixed.

11. The D-SUB connector welding positioning device according to claim 1, characterized in that: The limiting mechanism is rotationally matched with the first positioning mechanism and / or the second positioning mechanism, and the limiting mechanism can be moved between the first workstation and the second workstation by rotating the limiting mechanism.

12. The D-SUB connector welding positioning device according to claim 11, characterized in that: The limiting mechanism is rotatably arranged on a rotating shaft, and the rotating shaft is fixedly arranged on the first positioning mechanism and / or the second positioning mechanism. The limiting mechanism can be moved between the first station and the second station by rotating the limiting mechanism.

13. The D-SUB connector welding positioning device according to claim 11, characterized in that: The limiting mechanism includes a buckle and a spring. The buckle is movably arranged on the rotating shaft. The spring elastically cooperates with the buckle and provides pressure to drive the buckle to press downward along the second direction.

14. The D-SUB connector welding positioning device according to claim 1, characterized in that: The fixture base is also provided with a mounting hole, and the fixture base can be mounted on the operating table through the mounting hole.

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