Welding positioning device of thermostatic bath

Abstract

The invention relates to the technical field of welding, in particular to a thermostatic bath welding positioning device which comprises a base, a first base plate used for positioning thermostatic bath supporting legs is arranged in the base, a positioning chamber is arranged on the inner side of the base, and a positioning assembly used for positioning an inner container and an outer layer of a thermostatic bath is arranged in the positioning chamber. A rotating rod used for positioning the distance between the inner container and the outer layer is arranged in the positioning assembly, a clamping plate used for fixing the inner container is arranged in the positioning assembly, and a placing ring used for limiting the position of the outer layer of the thermostatic bath is arranged in the positioning assembly. The distance between the inner container and the outer layer is adjusted through the rotating rod, and meanwhile the outer layer is limited through the placing ring.

Description

Technical Field

[0001] The invention relates to the technical field of welding, in particular to a welding positioning device for a constant temperature bath. Background Art

[0002] Thermostatic bath, as the name implies, is a tank that can maintain a certain temperature range. It can be divided into thermostatic air and thermostatic liquid according to the different thermostatic media. Thermostatic liquid tank can be further divided into low temperature thermostatic bath (generally -40℃~100℃) and super thermostatic bath (generally room temperature 100℃~300℃) according to the temperature range. Since the liquid medium above 100℃ cannot be water but oil, the thermostatic bath of 100℃~300℃ is usually called oil tank. The Chinese announcement number is: CN221582443U, which discloses a high-precision positioning device for thermostatic bath welding, including a frame and a turntable with a pivot disposed thereon, and an outer stopper and an inner stopper are fixedly disposed on the turntable; the outer stopper and the inner stopper are both provided with a pressing assembly for pressing the extension strip thereon, so that the extension strip disposed on the outer stopper is in close contact with the outer wall of the thermostatic bath and the extension strip disposed on the inner stopper is in close contact with the inner wall of the thermostatic bath; the frame is also provided with a pressing assembly for pressing the extension strip and the thermostatic bath. The beneficial effects of this patent are mainly reflected in: the design is exquisite, the outer stopper and the inner stopper cooperate with each other to accurately limit the thermostatic bath, the upper surface of the extension strip on the upper surface of the outer stopper and the inner stopper is substantially flush with the top height of the thermostatic bath, thereby facilitating subsequent welding by the welder and improving work efficiency, in addition, the outer stopper and the inner stopper can support the extension strip; Although the above patent uses the outer stopper and the inner stopper to cooperate with each other to accurately limit the constant temperature bath, and can ensure the support of the extension strip, which is convenient for subsequent welding by the welder, it is considered that in addition to welding the extension strip, the constant temperature bath also needs to ensure the welding of the inner plug and the subsequent welding of each leg, and the position needs to be determined during the welding process to ensure the stability and accuracy of the welding; In view of this, we propose a welding positioning device for a constant temperature bath. Summary of the invention

[0003] The object of the present invention is to provide a welding positioning device for a constant temperature bath to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides a welding positioning device for a thermostatic bath, comprising a base, a first chassis for positioning the thermostatic bath legs is arranged in the base, a positioning chamber is arranged in the inner side of the base, a positioning assembly for positioning the inner liner and the outer layer of the thermostatic bath is arranged in the positioning chamber, a rotating rod for positioning the distance between the inner liner and the outer layer is arranged in the positioning assembly, a clamping plate for fixing the inner liner is arranged in the positioning assembly, and a placement ring for limiting the position of the outer layer of the thermostatic bath is arranged in the positioning assembly, wherein: By starting the positioning assembly, the rotation rod is used to adjust the distance between the inner liner and the outer layer, and the placement ring is used to limit the outer layer.

[0005] As a preferred embodiment of the present invention, the base is provided with square holes on the top of both sides of the positioning chamber, the interior of the base is hollow, and the bottom inner wall of the base is slidably connected to a plurality of telescopic columns, the telescopic columns are slidably connected to a tripod at the top of an end away from the base, and the telescopic columns are fixedly connected to a stabilizing member at the bottom of an end away from the base.

[0006] As a preferred embodiment of the present invention, a chassis No. 1 is fixedly connected to the center position of the base, a hydraulic rod is fixedly connected to the top of the chassis No. 1, sliding blocks are slidably connected to both sides of the chassis No. 1, the sliding blocks on both sides are fixedly connected to a spring on a side close to the telescopic column, and the spring is fixedly connected to a side of the lower end of the telescopic column at an end away from the sliding block.

[0007] As a preferred embodiment of the present invention, an inner partition is fixedly connected to the inner side of the positioning chamber, a second chassis is fixedly connected to the bottom inner wall of the positioning chamber, a plurality of slide rails are fixedly connected to the inner bottom of the positioning chamber, and a plurality of the slide rails are distributed in a circular array around the second chassis, wherein: The bottom of the second chassis is fixedly connected to the upper end of the hydraulic rod.

[0008] As a preferred embodiment of the present invention, the outer wall of the lower end of the positioning chamber is slidably connected with a lower pressure plate, the lower pressure plate is slidably connected to the inner side of the base, a circular hole is opened at the bottom of the lower pressure plate, and the sliding block is located on the inner side of the circular hole.

[0009] As a preferred embodiment of the present invention, the positioning assembly includes a motor, the output end of the motor is fixedly connected to a rotating rod, the outer wall of the rotating rod at one end close to the motor is fixedly connected to a gear column, a No. 1 thread groove is provided on the outer wall of the middle end of the rotating rod, and a No. 2 thread groove is provided on the outer wall of the end of the rotating rod away from the motor, and the No. 2 thread groove is distributed in the opposite direction to the No. 1 thread groove.

[0010] As a preferred embodiment of the present invention, the top of the No. 2 chassis is fixedly connected to a fixed plate via a column, the outer wall of the fixed plate is fixedly connected to a plurality of rings, the rings are threadedly connected to the No. 1 thread groove and the No. 2 thread groove on the rotating rod, and the top of the fixed plate is fixedly connected to a placing table.

[0011] As a preferred embodiment of the present invention, a plurality of fixed columns are fixedly connected to the top of the No. 2 chassis, a sliding column is slidably connected to the outer wall of the fixed column, a rack is fixedly connected to one side of the sliding column, the rack is meshingly connected to the gear column, a placement ring is fixedly connected to the top of the plurality of sliding columns, the sliding columns and the fixed columns are distributed in a circular array at the peripheral position of the No. 2 chassis, and the sliding columns and the fixed columns are located on the inner side of the inner partition.

[0012] As a preferred embodiment of the present invention, the top of the slide rail is slidably connected to multiple sliding plates, the motor is fixedly connected to the outer wall of the sliding plate, the rotating rod is rotatably connected to the inner side of the sliding plate, the inner side of the sliding plate is fixedly connected to a No. 1 telescopic rod, the No. 1 telescopic rod is fixedly connected to a splint at the end away from the sliding plate, the splint passes through the inner partition plate, and a No. 2 telescopic rod is fixedly connected between the two sliding plates.

[0013] As a preferred embodiment of the present invention, a limiting column is arranged between the two sliding plates, and the limiting column is fan-shaped. A plurality of the limiting columns are fixedly connected to the peripheral position of the bottom inner wall of the positioning chamber, and a strip hole is opened on the outer wall of the limiting column. The width of the strip hole matches the diameter of the second telescopic rod, and the second telescopic rod is slidably connected to the inner side of the strip hole.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. In the welding positioning device of the thermostatic bath, the lower rotating rod is driven by the motor to rotate, and the lower rotating rod slides deeper into the inner side of the fixed plate under the restriction of the No. 2 thread groove and the circular ring, and at the same time drives the sliding plate to slide inward on the slide rail, wherein the sliding plate drives the No. 1 telescopic rod and the clamping plate to slide inward together, and the bottom of the inner tank of the thermostatic bath is fixed by the clamping plate. At this time, because multiple clamping plates clamp the inner tank inward at the same time, the center of the inner tank is always corresponding to the center of the No. 2 chassis, and the position of the inner tank is first positioned.

[0015] 2. In the welding positioning device of the thermostatic bath, the positioning chamber and the lower pressure plate are moved downward together by contracting the hydraulic rod. The lower pressure plate will squeeze the sliding block on the inside, causing the sliding block to slide inward and pull the telescopic columns on both sides to slide inward in the square hole through the spring and the connecting rod. At this time, the stabilizing part will regularize the outer layer of the thermostatic bath on its inner side, so that the outer layer of the thermostatic bath is regular on the placement ring and is at the same center of the circle as the inner tank, which makes the inner tank and the outer layer of the thermostatic bath regular.

[0016] 3. In the welding positioning device of the constant temperature bath, the gear column will be driven to rotate when the motor drives the rotating rod to rotate. The gear column will be blocked by the rack around the sliding column, which will drive the sliding column to slide upward. In the process of the sliding column sliding upward, the outer layer of the constant temperature bath on the placement ring will move up and away from the outer wall of the inner tank, so that the inner tank and the outer layer of the constant temperature bath are separated. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an overall three-dimensional schematic diagram of the thermostatic tank welding positioning device of the present invention; Figure 2 It is a transverse cross-sectional schematic diagram of the thermostatic tank welding positioning device of the present invention; Figure 3 It is a longitudinal cross-sectional schematic diagram of the thermostatic tank welding positioning device of the present invention; Figure 4 It is a schematic diagram of the interior of a quarter cross section of the thermostatic tank welding positioning device of the present invention; Figure 5 It is a three-dimensional schematic diagram of the interior of the thermostatic tank welding positioning device of the present invention; Figure 6 It is a three-dimensional schematic diagram of the positioning assembly of the thermostatic bath welding positioning device of the present invention; Figure 7 It is a schematic diagram of the internal details of the positioning component of the thermostatic tank welding positioning device of the present invention; Figure 8 It is a three-dimensional schematic diagram of the shrinkage column of the thermostatic bath welding positioning device of the present invention; The meaning of each number in the figure is: 1. Base; 11. Square hole; 12. Telescopic column; 121. Tripod; 122. Stabilizer; 13. Chassis No. 1; 131. Sliding block; 132. Spring; 14. Hydraulic rod; 2. Positioning chamber; 21. Inner partition; 22. Chassis No. 2; 23. Slide rail; 24. Lower pressure plate; 3. Positioning assembly; 31. Motor; 32. Rotating rod; 321. Gear column; 322. Thread groove No. 1; 323. Thread groove No. 2; 33. Fixed plate; 331. Circular ring; 332. Placement table; 34. Fixed column; 341. Sliding column; 3411. Placement ring; 342. Rack; 35. Limiting column; 351. Strip hole; 36. Sliding plate; 361. Telescopic rod No. 1; 362. Clamp; 363. Telescopic rod No. 2. DETAILED DESCRIPTION

[0018] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0020] Embodiment 1 See also Figure 1-Figure 8 As shown, this embodiment provides a welding positioning device for a constant temperature bath, including a base 1, in which a chassis 13 for positioning the legs of the constant temperature bath is arranged, a positioning chamber 2 is arranged on the inner side of the base 1, in which a positioning assembly 3 for positioning the inner shell and the outer layer of the constant temperature bath is arranged, a rotating rod 32 for positioning the distance between the inner shell and the outer layer is arranged in the positioning assembly 3, a splint 362 for fixing the inner shell is arranged in the positioning assembly 3, and a placement ring 3411 for limiting the position of the outer layer of the constant temperature bath is arranged in the positioning assembly 3, wherein: by starting the positioning assembly 3, the rotating rod 32 is used to complete the adjustment of the distance between the inner shell and the outer layer, and the placement ring 3411 is used to complete the restriction of the outer layer.

[0021] like Figure 2-Figure 3 As shown, the base 1 is provided with square holes 11 at the top of both sides of the positioning chamber 2, the interior of the base 1 is hollow, and a plurality of telescopic columns 12 are slidably connected to the inner wall of the bottom of the base 1, and a tripod 121 is slidably connected to the top of the telescopic column 12 at the end away from the base 1, and a stabilizing member 122 is fixedly connected to the bottom of the end away from the base 1, and a No. 1 chassis 13 is fixedly connected to the center position of the base 1, and a hydraulic rod 14 is fixedly connected to the top of the No. 1 chassis 13, and sliding blocks 131 are slidably connected to both sides of the No. 1 chassis 13, and the sliding blocks 131 on both sides are fixedly connected to a spring 132 on the side close to the telescopic column 12, and the spring 132 is fixedly connected to the lower end side of the telescopic column 12 at the end away from the sliding block 131.

[0022] Among them: the sliding block 131 sliding on the top of the No. 1 chassis 13 will slide to the inner side of the No. 1 chassis 13, so during the working process, when the lower pressure plate 24 is driven to move downward, it will squeeze the inclined surface of one side of the sliding block 131, so that the surrounding sliding blocks 131 will shrink inward, and a retractable connecting rod for stretching is provided on the inner side of the spring 132.

[0023] like Figure 4-Figure 5As shown, an inner partition 21 is fixedly connected to the inner side of the positioning chamber 2, a No. 2 chassis 22 is fixedly connected to the bottom inner wall of the positioning chamber 2, a plurality of slide rails 23 are fixedly connected to the inner bottom of the positioning chamber 2, and a plurality of slide rails 23 are distributed in a circular array around the No. 2 chassis 22, wherein: the bottom of the No. 2 chassis 22 is fixedly connected to the upper end of the hydraulic rod 14, a lower pressure plate 24 is slidably connected to the outer wall of the lower end of the positioning chamber 2, the lower pressure plate 24 is slidably connected to the inner side of the base 1, a circular hole is opened at the bottom of the lower pressure plate 24, and the sliding block 131 is located on the inner side of the circular hole; The slide rail 23 is used to limit the sliding plate 36 to always slide on the track of the slide rail 23 , and the end of the slide rail 23 is located at the outer wall of the second chassis 22 .

[0024] like Figure 7 As shown, the positioning assembly 3 includes a motor 31, the output end of the motor 31 is fixedly connected to a rotating rod 32, the outer wall of the rotating rod 32 at one end close to the motor 31 is fixedly connected to a gear column 321, the middle end outer wall of the rotating rod 32 is provided with a No. 1 thread groove 322, the outer wall of the rotating rod 32 at one end away from the motor 31 is provided with a No. 2 thread groove 323, the No. 2 thread groove 323 and the No. 1 thread groove 322 are distributed in the opposite direction, the top of the No. 2 chassis 22 is fixedly connected to a fixed plate 33 through a column, the outer wall of the fixed plate 33 is fixedly connected to a plurality of rings 331, and the rings 331 are connected to the No. 1 thread groove on the rotating rod 32 The groove 322 and the second thread groove 323 are threadedly connected, the top of the fixed plate 33 is fixedly connected with a placing table 332, the top of the second chassis 22 is fixedly connected with a plurality of fixed columns 34, the outer wall of the fixed column 34 is slidably connected with a sliding column 341, one side of the sliding column 341 is fixedly connected with a rack 342, the rack 342 is meshingly connected with the gear column 321, the tops of the plurality of sliding columns 341 are fixedly connected with a placing ring 3411, the sliding columns 341 and the fixed columns 34 are distributed in a circular array at the peripheral position of the second chassis 22, and the sliding columns 341 and the fixed columns 34 are located on the inner side of the inner partition 21.

[0025] Among them: restricted by the circular ring 331 around the fixed plate 33, the rotating rod 32 is driven by the motor 31 to rotate and slide under the restriction of the circular ring 331, and during the sliding process, it will drive the sliding plate 36 to slide on the slide rail 23. At the same time, the rotation of the rotating rod 32 will cause the gear column 321 to drive the sliding column 341 to slide up and down.

[0026] like Figure 8As shown, a plurality of sliding plates 36 are slidably connected to the top of the slide rail 23, a motor 31 is fixedly connected to the outer wall of the sliding plate 36, a rotating rod 32 is rotatably connected to the inner side of the sliding plate 36, a No. 1 telescopic rod 361 is fixedly connected to the inner side of the sliding plate 36, a clamping plate 362 is fixedly connected to the No. 1 telescopic rod 361 at the end away from the sliding plate 36, the clamping plate 362 passes through the inner partition 21, a No. 2 telescopic rod 363 is fixedly connected between the two sliding plates 36, a limiting column 35 is arranged between the two sliding plates 36, the limiting column 35 is fan-shaped, a plurality of limiting columns 35 are fixedly connected to the peripheral position of the bottom inner wall of the positioning chamber 2, a strip hole 351 is opened on the outer wall of the limiting column 35, the width of the strip hole 351 matches the diameter of the No. 2 telescopic rod 363, and the No. 2 telescopic rod 363 is slidably connected to the inner side of the strip hole 351.

[0027] The plurality of sliding plates 36 are combined to form a regular octagon, and the plurality of sliding plates 36 slide around the limiting pillar 35 and gradually approach each other until sliding to the end of the strip hole 351 .

[0028] It can be seen that during the welding process of the double-layer thermostatic bath, the inner and outer layers of the thermostatic bath need to be positioned first, such as Figure 5-Figure 8 As shown, the staff first inverts the inner tank of the thermostatic bath on the placement table 332, and then puts the outer layer of the thermostatic bath on the outer side of the inner tank, and then starts the positioning device. Under the drive of the motor 31, the rotating rod 32 rotates, wherein the rotating rod 32 slides deep into the inner side of the fixed plate 33 under the restriction of the No. 2 thread groove 323 and the ring 331 at the end of the rotating rod 32. When the ring 331 is separated from the No. 2 thread groove 323, the motor 31 stops rotating. At the same time, during the process of the rotating rod 32 going deep into the fixed plate 33, it will drive the sliding plate 36 to slide inward on the slide rail 23, wherein the sliding plate 36 will drive the No. 1 telescopic rod 361 and the clamping plate 362 to slide inward together. At this time, the bottom of the inner tank of the thermostatic bath is fixed by the clamping plate 362. At this time, because multiple clamping plates 362 simultaneously clamp the inner tank inwardly, the center of the inner tank is always corresponding to the center of the No. 2 chassis 22. First, the position of the inner tank is positioned; It should be noted that, as the rotating rod 32 moves deeper into the inner side, the second thread groove 323 will gradually separate from the ring 331, and the first thread groove 322 will slide to the inner side of the ring 331. After the welding is completed, the motor 31 will rotate outwards under the restriction of the first thread groove 322 and the ring 331 to loosen the inner container. At the same time, when the staff puts the outer layer of the thermostatic bath on the outside of the inner tank, the hydraulic rod 14 contracts, so that the positioning chamber 2 and the lower pressure plate 24 move downward together. At this time, the inner wall of the circular hole at the bottom of the lower pressure plate 24 will squeeze the inner sliding block 131, and the sliding blocks 131 on both sides will slide inward by squeezing the inclined surface of the sliding block 131. In the process of the sliding block 131 sliding inward, the telescopic columns 12 on both sides will be pulled by the spring 132 and the connecting rod to slide inward in the square hole 11. At this time, the stabilizing member 122 on the telescopic column 12 will regularize the outer layer of the thermostatic bath on its inner side, so that the outer layer of the thermostatic bath is regular on the placement ring 3411 and is at the same center of the circle as the inner tank, which makes the inner tank and the outer layer of the thermostatic bath regular; It should be noted that when the outer layer is placed outside the inner tank, the outer layer of the thermostatic bath is attached to the outer wall of the inner tank. If welding is required, they need to be separated. When the motor 31 drives the rotating rod 32 to rotate, the gear column 321 will be driven to rotate. Because the gear column 321 is a constant horizontal plane, it is blocked by the rack 342 around the sliding column 341 during the rotation process, which will drive the sliding column 341 to slide upward. In the process of the sliding column 341 sliding upward, the outer layer of the thermostatic bath on the placement ring 3411 will be moved up and separated from the outer wall of the inner tank, so that the inner tank of the thermostatic bath is separated from the outer layer. Similarly, when the telescopic column 12 slides inward, the support frame 121 will be in contact with the outer wall of the outer layer. At this time, the staff can fix the support leg on the support frame 121 and weld it.

[0029] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A welding positioning device for a thermostatic bath, comprising a base (1), characterized in that: The base (1) is provided with a first chassis (13) for positioning the legs of the thermostatic bath, the inner side of the base (1) is provided with a positioning chamber (2), the positioning chamber (2) is provided with a positioning assembly (3) for positioning the inner liner and the outer layer of the thermostatic bath, the positioning assembly (3) is provided with a rotating rod (32) for positioning the distance between the inner liner and the outer layer, the positioning assembly (3) is provided with a clamping plate (362) for fixing the inner liner, and the positioning assembly (3) is provided with a placement ring (3411) for limiting the position of the outer layer of the thermostatic bath, wherein: By starting the positioning assembly (3), the rotating rod (32) is used to adjust the distance between the inner liner and the outer layer, and the placement ring (3411) is used to restrict the outer layer.

2. The welding positioning device of a thermostatic bath according to claim 1, characterized in that: The base (1) is provided with square holes (11) at the top of both sides of the positioning chamber (2); the interior of the base (1) is hollow; a plurality of telescopic columns (12) are slidably connected to the inner wall of the bottom of the base (1); a support frame (121) is slidably connected to the top of the telescopic column (12) at one end away from the base (1); and a stabilizing member (122) is fixedly connected to the bottom of the telescopic column (12) at one end away from the base (1).

3. The welding positioning device of a thermostatic bath according to claim 2, characterized in that: A first chassis (13) is fixedly connected to the center of the base (1), a hydraulic rod (14) is fixedly connected to the top of the first chassis (13), sliding blocks (131) are slidably connected to the two sides of the first chassis (13), the sliding blocks (131) on both sides are fixedly connected to springs (132) on the side close to the telescopic column (12), and the spring (132) is fixedly connected to the lower end of the telescopic column (12) at one end away from the sliding block (131).

4. The welding positioning device of a thermostatic bath according to claim 3, characterized in that: An inner partition (21) is fixedly connected to the inner side of the positioning chamber (2), a second chassis (22) is fixedly connected to the inner wall of the bottom of the positioning chamber (2), a plurality of slide rails (23) are fixedly connected to the inner bottom of the positioning chamber (2), and a circular array of the plurality of slide rails (23) is distributed around the second chassis (22), wherein: The bottom of the second chassis (22) is fixedly connected to the upper end of the hydraulic rod (14).

5. The welding positioning device for a thermostatic bath according to claim 4, characterized in that: A lower pressure plate (24) is slidably connected to the outer wall of the lower end of the positioning chamber (2), and the lower pressure plate (24) is slidably connected to the inner side of the base (1). A circular hole is formed at the bottom of the lower pressure plate (24), and the sliding block (131) is located on the inner side of the circular hole.

6. A welding positioning device for a thermostatic bath according to claim 5, characterized in that: The positioning assembly (3) includes a motor (31), the output end of the motor (31) is fixedly connected to a rotating rod (32), the outer wall of the rotating rod (32) at one end close to the motor (31) is fixedly connected to a gear column (321), a first thread groove (322) is provided on the outer wall of the middle end of the rotating rod (32), and a second thread groove (323) is provided on the outer wall of the end of the rotating rod (32) away from the motor (31), and the second thread groove (323) and the first thread groove (322) are distributed in opposite directions.

7. A welding positioning device for a thermostatic bath according to claim 6, characterized in that: The top of the second chassis (22) is fixedly connected to a fixed plate (33) via a column, the outer wall of the fixed plate (33) is fixedly connected to a plurality of circular rings (331), the circular rings (331) are threadedly connected to the first thread groove (322) and the second thread groove (323) on the rotating rod (32), and the top of the fixed plate (33) is fixedly connected to a placement table (332).

8. The welding positioning device of a thermostatic bath according to claim 7, characterized in that: A plurality of fixed columns (34) are fixedly connected to the top of the second chassis (22); a sliding column (341) is slidably connected to the outer wall of the fixed column (34); a rack (342) is fixedly connected to one side of the sliding column (341); the rack (342) is meshingly connected to the gear column (321); a placement ring (3411) is fixedly connected to the top of the plurality of sliding columns (341); the sliding columns (341) and the fixed columns (34) are distributed in a circular array at the periphery of the second chassis (22); and the sliding columns (341) and the fixed columns (34) are located on the inner side of the inner partition (21).

9. A welding positioning device for a constant temperature bath according to claim 8, characterized in that: The top of the slide rail (23) is slidably connected to a plurality of slide plates (36); the motor (31) is fixedly connected to the outer wall of the slide plate (36); the rotating rod (32) is rotatably connected to the inner side of the slide plate (36); the inner side of the slide plate (36) is fixedly connected to a first telescopic rod (361); the first telescopic rod (361) is fixedly connected to a clamping plate (362) at one end away from the slide plate (36); the clamping plate (362) passes through the inner partition plate (21); and a second telescopic rod (363) is fixedly connected between the two slide plates (36).

10. The welding positioning device of a constant temperature bath according to claim 9, characterized in that: A limiting column (35) is arranged between the two sliding plates (36), the limiting column (35) is fan-shaped, a plurality of the limiting columns (35) are fixedly connected to the peripheral position of the bottom inner wall of the positioning chamber (2), the outer wall of the limiting column (35) is provided with a strip hole (351), the width of the strip hole (351) matches the diameter of the second telescopic rod (363), and the second telescopic rod (363) is slidably connected to the inner side of the strip hole (351).

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